2012, China's steel output has reached 716 million tons, the output value of more than 3 trillion yuan, as long as the 1% increase in the proportion of ultra-fine grain steel, its brought direct economic benefits increase more than billions of dollars.
Lighter weight and higher hardness, the direction seems to be the relentless pursuit of people, in response to this demand, carbon fiber, and on the development and application of ultra-fine grain steel has become an international new materials fields and Steel Structure Project areas of remarkable Research hot spots.
Material that is both light and strong, seems to have never been so close as it is today came into our lives.
In this past January, BMW introduced the new 5 series cars imported in China, the car is one of the highlight is its ultra lightweight carbon fiber hood effectively reduces the weight.
Last year, a technology website, Apple is building a mysterious device, which used carbon fiber material. News that the part material of carbon fiber parts are mainly used for the casing of the device. Perhaps in the near future, iPhone6 shell made of carbon fiber material, maybe.
Fine grain, high strength, low cost and environment-friendly characteristics of super steel, since the beginning of this century, after industrial production, such as Baosteel, angang and bengang, rounds of super steel in steel companies set off a whirlwind, factory racing to develop super steel strip, wire and Rod products, thousands of tons of super steel production from the initial prototype rapidly soared to tens of millions of tons. Super steel technology is taking hold. At present, individual action by enterprises upgraded to industry standards and the national standards .
Super steel: backbone stand of peaceful development
"After 30 years, it would be ' steel ' era. "Famous in the field of steel rolling experts when Northeastern University Professor Liu Xianghua, in an interview with science and technology daily, expressed their own forecast of development trend of super steel.
In 2012, the CCTV column report in the innovation in China, my ceramic steel (super steel) leads the world in the lead. Super steel features: low cost, high strength and high toughness and alloying elements, environmental friendly, save for sustainable development was seen as a significant revolution in the field of iron and steel; China is currently the world's only country to achieve industrial production of ultra-fine grain steel, super steel from other countries is not yet out of the laboratory.
Liu Xianghua, current strength and toughness steel fell far short of the theoretical limit, the "super steel" will also continue, this years third generation of China's emerging automotive steels, high-quality special steels and exemplified.
Another focus is on the development of super steel scrap recycling, 30 years will have more iron and steel in China after being taken out of service as scrap steel, than with iron ore, steel scrap recycling simple and cheap, then super steel because of its ingredients simple and unparalleled advantages into play.
According to Liu Xianghua introduced in 2012, already reaching 716 million tons of steel production in China, the output value of more than 3 trillion yuan, as long as the 1% increase in the proportion of ultra-fine grain steel, its brought direct economic benefits increase more than billions of dollars.
Said Liu Xianghua, developed super steel's history can be traced back to 1998, when steel production in China has been the world's first, but the quality gap with foreign countries is large. In 1998 and 2001 respectively, the Ministry of science and technology launched the 973 plan: a study of the new generation of steel materials and 863 programs: the carbon of advanced manufacturing technology for 500MPa. In both of these major projects, supported by Northeastern University in cooperation with companies such as Baosteel, Faw, industrial production in 2002 successfully to achieve a super steel and used in automobile manufacturing, this indicates that China's development and application of ultra-fine grain steel to the international forefront.
In both of these major projects after the conclusion, as Super steel developed at the national level generally come to an end, super steel already enjoys popular support, a series of technical measures as a result of super steel landmark everywhere in the country.
"The formation technology in development of super steel, more than 10 years has been affecting the steel variety development and to improve the quality of development trends. "Liu Xianghua says.
In recent years had low cost ultra-fine grain steel and high strength upgrade for low cost and high performance. In addition to this important indicator of the strength, after experiencing a series of destructive earthquakes, tsunamis and other major natural disasters, people pay more attention to Qu Qiangbi, earthquake resistance, fire resistance of steel steel specification of the nature of human life. "Super steel specification system, is no longer ' strength ' a thriving, but strength, plasticity, toughness and shock resistance and fire resistance performance upgrade. "Liu Xianghua said.
As China's more than United States becoming the first power car production, steel for automobile quality is developing rapidly. Described Liu Xianghua, the strength of steel products for automobile is from 200-400MPa to 500-800MPa direction, individual parts than 1000MPa. Technological line of low cost, high performance, and success.
Through Super steel developed low-cost, high-performance, not only can be used to enhance the performance of internal or extension is used to optimize the shape and size of steel. In this regard, Liu Xianghua, Professor at Northeastern University, led by poor research group of plate rolling with variable thickness in recent years scientific research accessGet results.
According to statistics , differential plates for automotive weight reduction effects of up to 10-40%. Liu Xianghua, was exciting, was held on March 7 this year, the Shanghai Automobile Group "continuous differential plate independent technology the first successful mass production application", marking the rolling with variable thickness technology from the laboratory to production. To plug in the variable thickness of the wings super steel products, steel will be opened up a new world of energy conservation and emission reduction.
Carbon fiber: to highlight the technological blockade the siege
Study of polyacrylonitrile carbon fiber as raw material to produce in China began in 1962, no late start, but made no substantive progress. Li Kejian, Deputy Secretary General of the national new material industry development strategy Advisory Committee has said in an interview, because important use carbon fiber in aerospace, defense industry, Western countries will be considered as military goods to China "embargo" not to transfer production technology.
Last year September, Chinese Academy of Sciences Ningbo material by put a car carbon fiber small car into has talent technology week of high-tech results transactions fair earned foot has eye, highlights main in its shell Shang: in general material of car engine cover Shang, hammer hard percussion, paint cover Shang is has may will has SAG, and this car car of car shell is very substantial, hard percussion car cover Hou will rapid rebound, surface does is not loss. Along with this debut, upended the word fiber soft impression in people's minds.
"This made of carbon fiber composite materials, compared to ordinary steel-made cars, it is characterized by light and fast. "Institute of Ningbo material Zhao Xiaoguang said the car abandoned the traditional steel structure , made extensive use of elastic fiber material than the average vehicle weight reduction of steel 60%. In the same case with oil, the car can be more than 50 miles per hour.
Weight loss, how secure is it? Mechanical Engineering Research Institute expert Chen Changnian introduction to composite materials, while the carbon fiber look like plastic, but in fact the material stronger than steel impact resistance, especially made out of carbon fiber steering wheel, compared to mechanical strength and impact resistance is greatly improved. In composite materials, "arm", this car has become in the family car, "armoured vehicle". According to Chen Changnian revealed, this skirt on the application of carbon fiber material already in the high speed train.
Carbon fibre not only has the intrinsic properties of carbon materials, and combine the softness of textile fibers can be processed, a new generation of reinforcement fibres. Unlike traditional glass fiber (GF), young's modulus is 3 times more than double; it with Kevlar fibers (KF-49) compared to young's modulus is not only about twice times, and insoluble in organic solvents, acids, alkalis not heaving, ensures excellent corrosion resistance. There are scholars steeped in 1981, PAN based CF in an alkaline NaOH solution, more than 30 years have passed, it has still maintained the fiber morphology.
Chen Changnian says, carbon fiber can be processed into fabric, carpet, seats, Ribbon, paper and other materials. Traditional uses carbon fiber for insulation material, generally not used alone, as a reinforcing material added to resins, metals, ceramics, concrete and other materials, constitutes a composite. Carbon fiber-reinforced composite materials can be used as materials for aircraft structures, electromagnetic shielding materials removal, body of alternative materials such as artificial ligament and used in the manufacture of rocket shells, boats, industrial robotics, automotive leaf spring and drive shafts.
Story of carbon fiber
Shi Changxu, 80 years old took "hot potato"
In 1975, the Commission convened a meeting of thematic, deployment of domestic carbon fiber research, and to develop a 10-year development plan. In 1978, the State Science and Technology Commission recovery, carbon fiber turn for the CST Management , carbon fiber new material seen as of paramount importance, and spends a great deal of energy and resources, while improving the quality of carbon fiber, it has struggled to make a big breakthrough. A series defeat has seriously dampened the confidence of State departments in more than 10 years in the late 20th century are unwilling or afraid to invest heavily, making carbon fiber research and development a daunting "hot potato".
Until the beginning of 2000, famous physical metallurgists and materials scientists found kejian Li Shi Changxu said: "China's carbon fiber does not go on, affecting the National Defense Science and technology and high-tech development, a matter of national security, not to engage in no. I am almost 80 years old, 80 years old to leave something in the future, but wanted to catch a catch carbon fiber. ”
Shi Changxu opinion was then Deputy Director of the high-tech Department of the Ministry of science and Technology Shi Dinghuan, MA yanhe, Director of materials, the "863" plan Chief Shi Likai, who support in the areas of new materials, decided in the "863" materials areas State soft subjects "an based carbon fiber development strategies", was founded by Shi Changxu of the group leader's software research group.
In October 2001, decided to establish the Department of science and technology of carbon fiber special, expert group was established in November of that year. February 26, 2002 high-tech Department of the Ministry of science and technology held the "863" plan in new material field "plan arrangements for briefing, divisions for special carbon fiber raised again: first, the goals are clear and the second is innovation of organizational forms, to promote joint, without sectarian bias, cannot form"System ", supported the construction of high-level analysis and testing platform, supports the establishment of an equitable, fair, highly transparent sample evaluation system.
On March 9, 2002, the Group of experts meeting in Taiyuan, last modify validation "' XV ' strategic objectives", and made a number of important strategic goals by this modification.
On January 17, 2003, the State Natural Science Fund Committee approved two key projects in the field of carbon fiber from "financial macro-control". 2005 carbon fiber project was approved as a national key basic research projects, obtained a valuable basis for research funding.
When our progress in carbon fibre technology, industrialization started later, Shi Changxu domestic carbon fiber applied immediately on the agenda, efforts to support the relevant application and to seek special funding, achieved important results.
Domestic carbon fiber production is about to make a breakthrough. Said Li Kejian, carbon fiber industry in China take a combination of self development and the introduction of roads are beginning to bear fruit, "Eleven-Five" end basically equivalent to Japan scale T300 domestic carbon fiber production line, and some companies have formed a T700 over hundred-ton production line, the level of carbon fiber industry in China has been found in numerous blockades and pursued by a breakthrough!
Driven by innovation
Super steel: bridge weight motor oil
The construction industry, China's newly revised concrete structure design specification will yield strength is 400MPa force steel rebar, as the lead, 500MPa class has already begun, steels for concrete backwardness situation will be reversed. Super strong steel rod solves Cuby, issues such as timeliness, through the system of rolling and cooling process optimization to reduce the use of micro-alloying elements, reduce production cost, its market has great potential.
Using super steel hot strip products reduction heavy section material, has has many success of instance, as Baosteel Meishan Super plate volume, and pipe research development success, with 6mm super steel pipe alternative 8mm thickness low alloy steel tube, anti-impact performance greatly over General of structure steel, and directly application Yu national focus engineering Shanghai East bridge, plate reduction thin Hou, reduced has bridge overall deadweight, economic benefits and social benefits are quite considerable. Super steel used for car weight reduction, economic benefits are more obvious. Stringer is key to truck load-bearing parts, 500MPa super steel for truck side rail, significant reduction in body weight, steel production plant and the user has been made a win-win result. Upgrading of common carbon steel, led to technological advances in the automotive industry.
Super steel plates used in shipbuilding, construction, bridge, and other industries, to replace the traditional General plate with good prospects. High strength ship plate can reduce the weight of the hull, increasing cargo carried; low-cost, high-performance bridge plate conducive to optimum design of bridge structure, make the bridge more durable. Here, super steel comes in.
Super steel have infiltrated all areas around us, plays an important role for energy conservation and emission reduction in the conservation-oriented society.
Carbon fiber: to change sports equipment for space equipped with gear
Carbon fiber distance and people's lives have been very close, the most we know is that some sports equipment. Traditional sporting goods mostly wood and composite products. Mechanical properties of carbon fiber reinforced composite materials much more expensive than wood, and its specific strength and modulus of Chinese FIR 4 times and 3 times, respectively, is 3.4 times and 4.4 times times the Chinese parasol. Therefore, it has been widely used in sport area. In terms of sports products, carbon fiber-reinforced composite material is mainly used in the following areas: golf clubs, fishing rods, tennis rackets, badminton rackets, racing, snowboarding, frame, and so on. In addition, carbon fiber-reinforced composite materials in sporting goods also can create a dynamic sled with a spring board, a bottle of bows and arrows, jump poles, ice hockey sticks, yachting, rowing, rowing oars, sailboat masts, motorcycle parts, mountain products and the glider, human-powered aircraft.
Consumption structure of carbon fiber in the world focusing on industrial applications, aerospace and sports three, currently 58% per cent of total consumption of industrial application; aerospace applications accounted for 23%, sports equipment accounts for about 19%. 1991-2009 carbon fiber consumption is in the area of industrial applications continued to grow, essential to maintain a balance in the field of Aeronautics and Astronautics, and sporting goods in the application of carbon fiber ratio continued to decline, gradually from aerospace, sporting carbon fiber application transfer to civilian industrial applications, especially with the mass production of large-tow carbon fiber, reduced its prices will continue, civilian industry will continue to maintain a significant upward trend.
Li Kejian, Deputy Secretary General of the national new material industry development strategy Advisory Committee said the carbon fiber variety many, China made only a few of the most basic but also the largest species, many varieties of great potential still struggling stage.
From the perspective of domestic demand for carbon fiber structure, carbon fiber carbon fiber needs in sport and leisure areas – still China needs first, but the annual growth rate declined, indicating that after 2005 sports largely saturated demand for carbon fiber. Industrial applications demand for carbon fiber showed fast growth trend, 2010 demand for carbon fiber reaches 1900t/a (tonnes/year), is a 2003 demand for 9.5 times. Aerospace sector demand for carbon fiber is faster, 2010 demand for carbon fiber up to 250T/a, is 4.2 times times the demand for 2003. 2003-2010 carbon fiber demand in China continued the trend.
Kejian Li believes that new material industry in China is still weak, China's potential market is huge, but market remains inadequate.
In May 2012, the State Council of the "Twelve-Five" national strategic development plan for new industries, and new materials industries are included. As a high-performance fiber materials and composite materials used in carbon fiber for more policy support for economic and social development and make greater contributions.
Expert perspectives
Development and application of ultra-fine grain steel are impressive research focus in recent years on the international field of iron and steel. According to Northeastern University Professor Liu Xianghua, United States, and Japan, and Korea, European and other foreign mega steel project, while doing research on a large number of laboratory and theoretical studies but has not yet seen reports of industrial application. Development and application of ultra-fine grain steel in this round of international competition to go to the front. Super steel products have been used in the automotive, construction and other industries, achieving industrialization objectives, played an important role in energy conservation and emission reduction of iron and steel products.
As in recent years, the Ministry of construction-grade steel III as the main steel industry policy in place, Super fine grain steel bar and wire rod production in recent years, a substantial increase, replacing the normal-200-300MPa with 400-500MPa steel bar reinforcement process progress rapidly, it is expected that by 2015, our high strength steel production will reach 80%. One-third follow the idea of super steel production, their production will be more than 30 million tons. In the context of rapid economic development, construction of prosperity for a super steel wire rod and bar provide a vast market, low cost, super high strength steel wire rod and bar will also provide powerful support for the construction industry.
Super steel also has broad application prospects in other industries. Past adding micro-alloying elements to improve the performance of ship plate steel, bridges, container plate, can improve strength by grain refinement, improvement of toughness, to improve performance. To save by using super steel developed micro-alloying elements, reduce cost, enhance the market competitiveness of our products, has become the conscious action of the steel producers.
Super steel developed has been modernization have an important impact on China's steel products, Super fine grain steel characteristics of low-cost, high-performance, next-generation steel series, has begun to gradually replace the old standard, steel, super steel as the landmark sign, included in the annals of the development of China's iron and Steel Structure Project http://www.jingtabuilding.com/ts.html.
Development of carbon fiber materials in China in the coming decade will be highly
National new materials industry development strategy Professor Li Kejian, Deputy Secretary General of the Advisory Committee, predicted the next decade is the development of China's high carbon fiber material for ten years. Excellent mechanical properties of composite reinforced base, broad application areas. Carbon fiber has excellent mechanical properties and chemical stability, is currently in the mass production of high-performance fibers has the highest strength and maximum modulus of fibers. In addition, carbon fiber and a variety of other excellent properties such as low density, high temperature resistance, corrosion resistance, friction resistance, fatigue resistance, high attenuation, high electrical and thermal conductivity, low thermal expansion coefficient, high x-ray penetration, non-magnet, such as electromagnetic shielding. As a reinforcing material added to resins, metals, ceramics, concrete and other materials, constitutes a composite. From this sense have predicted broad application prospects of carbon fiber in the project.
In terms of world carbon fiber pattern, developed industry matures, high concentration in the industry. World carbon-fibre production is concentrated in Japan and the United Kingdom and the United States, and France, and Korea and a small number of developed countries and China's Taiwan Province, Japan's three companies account for 78% per cent of the world production. Carbon fiber industry in developed countries is gradually moving towards maturing. As of 2008, the main carbon fiber manufacturers large and small tow capacity total of 64,200 tons.
But kejian Li also pointed out that now the carbon fiber market blindness, public, private, resulting in serious low repetition. Even the banner of "new materials" in the name of, production of carbon fiber as a performance engineering, considers only the investment, regardless of the overall situation of the development of the new materials industry as a whole. This fact caused great waste of money.
National strategy for the West coast of the Pearl River Delta cities of Zhuhai
http://steelstructurewarehouse.blogspot.com/2013/06/national-strategy-for-west-coast-of.html
2013年6月27日星期四
2013年6月25日星期二
Now under construction in the expo site
Now under construction in the expo site, shenyang rose garden pavilion external glass curtain decoration engineering has been completed. This covers an area of 1300 square meters, 10 meters high, across 22 meters, consists of more than 100 tonssteelSet up, composed of more than 1100 piece of tempered glass Mosaic & other; Blooms throughout the &; , is one of the perfect combination of Steel Structure Project and roses, and more than half a month time to the site all of the project is completed, it will begin to bloom.
Entered the shenyang ZhanYuan, looked at the flowers with crisscross erecting the steel frame of a root, pieces of glittering and translucent get rid ofglassCurtain wallatchwork of & other; Rose & throughout; , really let a person can't help exclamationdesignStrange think of clever want. Full of modern breath industrial & other Rose & throughout; That is one of the world garden city ZhanYuan & other; Shenyang garden & throughout; The core of landscape & ndash; & ndash; Rose hall, also called rose. According to project director Zhu Wanhai, the rose flower and Mosaic composed of more than 1100 piece of glass plate joining together into a triangle. The toughened glass belong to different, basically every shape is different, so the factory had already arranged according to the serial number, after from shenyang to make partial shipments to expo garden, rose and irregular modelling, more needThe constructionStaff patiently splicing paste, easy to stitching various nodes and plane triangular structure.
In order to make the flowers are colourful, beautiful cyberworks' artistic effect, flower heart, Mosaic, respectively, both inside and outside installed leds, seven kinds of color will continuously transformation, set each other off. Reporter noticed at the scene, the assembly to complete the roses in the sun with elegant sapphire blue sheen, Zhu Wanhai, said this was because of glass coating, which is integral part of the light color design. Appearance & other; Blue coating & throughout; The benefits of toughened glass surface is strong, not easy fracture, but also can produce a kind of hazy beauty.
It is understood that roses pavilion construction, construction technology and the Beijing Olympic Games & other The bird's nest & throughout; Is exactly the same, are all Steel Structure Project http://www.jingtabuilding.com/ts.html is composed of main frame and vice frame. Shenyang garden design theme & other; The water rose & throughout; Rose, rose is shenyang city flower, water on the one hand, is a combination of sea world theme park, on the one hand is a symbol of the shenyang development changes with each passing day and the construction of ecological city's efforts to target. According to this design, roses pavilion surrounded by 0.6 metres deep & other; Borderless net surface & throughout; Surrounded by flower heart, Mosaic full immersion in water, looks like in full bloom in the water, float on the sea.
teel structureengineeringTo deependesign
http://steelstructurewarehouse.blogspot.com/2013/06/teel-structureengineeringto-deependesign.html
Entered the shenyang ZhanYuan, looked at the flowers with crisscross erecting the steel frame of a root, pieces of glittering and translucent get rid ofglassCurtain wallatchwork of & other; Rose & throughout; , really let a person can't help exclamationdesignStrange think of clever want. Full of modern breath industrial & other Rose & throughout; That is one of the world garden city ZhanYuan & other; Shenyang garden & throughout; The core of landscape & ndash; & ndash; Rose hall, also called rose. According to project director Zhu Wanhai, the rose flower and Mosaic composed of more than 1100 piece of glass plate joining together into a triangle. The toughened glass belong to different, basically every shape is different, so the factory had already arranged according to the serial number, after from shenyang to make partial shipments to expo garden, rose and irregular modelling, more needThe constructionStaff patiently splicing paste, easy to stitching various nodes and plane triangular structure.
In order to make the flowers are colourful, beautiful cyberworks' artistic effect, flower heart, Mosaic, respectively, both inside and outside installed leds, seven kinds of color will continuously transformation, set each other off. Reporter noticed at the scene, the assembly to complete the roses in the sun with elegant sapphire blue sheen, Zhu Wanhai, said this was because of glass coating, which is integral part of the light color design. Appearance & other; Blue coating & throughout; The benefits of toughened glass surface is strong, not easy fracture, but also can produce a kind of hazy beauty.
It is understood that roses pavilion construction, construction technology and the Beijing Olympic Games & other The bird's nest & throughout; Is exactly the same, are all Steel Structure Project http://www.jingtabuilding.com/ts.html is composed of main frame and vice frame. Shenyang garden design theme & other; The water rose & throughout; Rose, rose is shenyang city flower, water on the one hand, is a combination of sea world theme park, on the one hand is a symbol of the shenyang development changes with each passing day and the construction of ecological city's efforts to target. According to this design, roses pavilion surrounded by 0.6 metres deep & other; Borderless net surface & throughout; Surrounded by flower heart, Mosaic full immersion in water, looks like in full bloom in the water, float on the sea.
teel structureengineeringTo deependesign
http://steelstructurewarehouse.blogspot.com/2013/06/teel-structureengineeringto-deependesign.html
2013年6月24日星期一
Construction investment from hebei shengda metal structure
Construction investment from hebei shengda metal structure co., LTDThe steel structureAnd thestandardMetal construction project, recently in BaiXiangXian based economic development zone. The project total investment 205 million yuan, will form the annual output of 100000 tonsThe Steel Structure Project Components and thestandardMetal components production capacity. The year after the completion of the project can realize sales income 710 million yuan, tax turnover RMB 89 million, 350 jobs.
Hebei shengda metal structure co., LTD., is a large-span steel structure plant,Steel structure housing, tower bridge, rack and other projectsdesignrofessional, production, installation of HuaQing steel building materials company, engaged in non-standard steel structure, building hardware, marketing, metal hot spraying, long-lasting anti-corrosion, anti-rust, anti-wear engineering, etcThe constructionHomework.
The company in hebei steel structure industry take the lead in buying supersonic flame spraying equipment, in order to solve the major problem of steel structure rust for a long time. Additional company choose the domestic first-class CNC flame cutting equipment, H Steel Structure Project http://www.jingtabuilding.com/ts.html group type door machine, straightening machine, submerged arc welding machine, shot blasting derusting, paint spraying production line and other advanced equipment, to ensure the engineering quality high efficiency, high quality, high starting point to meet customer needs.
On March 13, 2013 at 10 am, yunlong steel structure company production of hubei provincemanagementRelated to workshop personnel
http://steelstructurewarehouse.blogspot.com/2013/06/on-march-13-2013-at-10-am-yunlong-steel.html
Hebei shengda metal structure co., LTD., is a large-span steel structure plant,Steel structure housing, tower bridge, rack and other projectsdesignrofessional, production, installation of HuaQing steel building materials company, engaged in non-standard steel structure, building hardware, marketing, metal hot spraying, long-lasting anti-corrosion, anti-rust, anti-wear engineering, etcThe constructionHomework.
The company in hebei steel structure industry take the lead in buying supersonic flame spraying equipment, in order to solve the major problem of steel structure rust for a long time. Additional company choose the domestic first-class CNC flame cutting equipment, H Steel Structure Project http://www.jingtabuilding.com/ts.html group type door machine, straightening machine, submerged arc welding machine, shot blasting derusting, paint spraying production line and other advanced equipment, to ensure the engineering quality high efficiency, high quality, high starting point to meet customer needs.
On March 13, 2013 at 10 am, yunlong steel structure company production of hubei provincemanagementRelated to workshop personnel
http://steelstructurewarehouse.blogspot.com/2013/06/on-march-13-2013-at-10-am-yunlong-steel.html
2013年6月20日星期四
The task of this meeting is to study and implement（1）
The task of this meeting is to study and implement the party's eighteen big spirits and xi in the capital from all walks of life to commemorate general secretary announced the current constitution of the 30th anniversary of the convention's important speech, unified thought, improve knowledge, analysis of the situation facing the administrative reconsideration work and clarify the administrative reconsideration work requirement and promote the housing urban and rural construction system administration according to law. Jiang weixin, minister of attaches great importance to the administrative reconsideration work, emphasize & other; To further strengthen the administrative reconsideration work, improve the working mechanism of trial, and improve the quality of cases dealt with throughout the & Steel Sheds, I speak several opinions.
A, practical, housing in urban and rural areas construction system of the administrative reconsideration work for new progress
In recent years, the housing urban and rural construction departments at various levels shall, in accordance with the requirements of the CPC central committee and the state council, solidly carry out the administrative reconsideration work, in the maintenance of the legitimate rights and interests, promoting administration according to law, improve the administrationmanagementLevels have played an important role in such aspects.
(a) to resolve administrative dispute and safeguard the legitimate rights and interests
Around in the administrative reconsideration work adhere to the people-oriented, reconsideration for the people, pay attention to the substantial resolve contradictions. A mediation is innovation. Some provinces (districts) formed the housing urban and rural construction department in the pretrial and trial, three stages after careful mediation mechanism, some department leaders of some influential cases will personally presided over the mediation, a case through mediation settlement properly solved. Second, insist on is wrong must rectify. Some departments in practice on the basis of normative documents, to make administrative punishments and other illegal situation, the administrative body for reconsideration after trial confirmed illegal or revoked according to law, embodies the principle of has must rectify a mistake. 3 it is outside the association problem. Some departments for some do not belong to the scope of administrative reconsideration applications, rather than simply will not be accepted or rejected, but to instruct the lower administrative authority investigation in a timely mannerresearchSafe handling, the conflict.
(2) the innovation of working mechanism, improve the level of job of reconsideration
Around to meet the need of the administrative reconsideration case, explore the perfection of the mechanism of administrative reconsideration. A collective review mechanism is to establish a case. Many departments established administrative review committee, raise the level of the administrative reconsideration work. Presided over some departments set up department leadership, legal department and business department jointly participate in the trial system, legal counsel, please also attend when necessary, better results have been achieved. Second, the innovation works of reconsideration. Housing and urban-rural development many executes & other departments at the provincial level; Inform & before cutting throughout; System to be withdrawn, change, and to fulfill the reconsideration decision, the prior communication with the applicant, points out its existing problems. Some departments to strengthen in the process of working with the legislative affairs office, monitoring, reporting and other department coordinate linkage, to solve the problem of the parties reflect. Three is the introduction of external professionals to participate in the trial. Many departments inviteexpertsScholars and lawyers to participate in the trial, and some place to explore ways to establish the hearing system, improve the quality of the case is dealt with.
(3) play a role of hierarchical supervision, promote administration according to law
Everywhere pays attention to play a role of administrative reconsideration level supervision, promote administration according to law. One is determined to correct illegal behavior. Some departments such as practice for the applicant to apply for the information disclosure of not to give any reply, even though this information may not be the authorities publicly, but according to the government information open regulations should also inform the applicant. To give any reply on this behavior, the administrative body for reconsideration shall be ordered to make its reply duties. The second is to carry out the system of administrative review opinions. The administrative body for reconsideration subordinate departments found in case the problems existing in the administration according to law, through the issued by the administrative reconsideration opinions, cause the attention of subordinate departments, especially the main leadership, targeted for improvement, has played a good effect. Three is based on questioning and proposed improvements. Some departments at the provincial level for reconsideration cases more, questioning the related leadership, improvement measures are proposed. Some departments insist on carding the administrative reconsideration case analysis, summarizes the regularity problem, put forward countermeasures and Suggestions of administration according to law.
(4) drive system is perfect, improve the administrative level
The administrative reconsideration organ in case at the same time, pay attention to find the case behind the lack of system construction. Some places to handle administrative reconsideration cases found in the process of system problems, clear in the relevant documents in time.
In general, the housing urban and rural construction system of the administrative reconsideration work achieved positive results, to enhance the level of housing urban and rural construction system administration according to law. These achievements obtained, is not only the legislative affairs office of the state council and government legal agencies at all levels concern and support of result, also embodies the urban and rural housing construction system of leaders at all levels and the vast majority of administrative reconsideration workers sweat.
Second, the clarity of the situation, strengthen the administrative reconsideration work sense of responsibility
(a) rapid development of urban and rural construction, put forward a new challenge to administrative reconsideration work
Current our country is in a period of rapid urbanization development, at the end of 2011, China's urbanization rate reached 51.3%. Experience shows that the urbanization rate was 50% ~ 50% stage, is the social contradictions focus on Tuesday. Especially related to urbanization level of urban and rural construction field, performance is more obvious. Along with the rapid advance of urbanization, rapid progress in urban and rural construction, engineering construction scale expands unceasingly, the real estate asset attributes, various kinds of interests contradiction is becoming more and more manifest. Under this background, the administrative reconsideration cases in recent years the housing urban and rural construction system to keep high incidence. Since 2010, the caseload of housing urban and rural development are top in the ministries and commissions under the state council, especially caseload rose sharply in 2012. From local, urban and rural construction department of the four municipalities directly under the central government housing caseload high for many years, the housing urban and rural construction committee of Beijing, Shanghai, chongqing housing agency caseload for three years more than 200; Economic developed provinces such as jiangsu, zhejiang, guangdong housing total case is more, urban and rural construction department of jiangsu province housing construction department caseload in three consecutive years in more than 200 pieces. Though the administrative reconsideration cases mainly concentrated in the economically developed provinces, but with the development of urban and rural construction, in other parts of the case number is on the rise. Overall look, housing in urban and rural areas construction system of the administrative reconsideration cases in a period will increase quantity large, fast, want to have a clear understanding about this. The housing urban and rural construction department at various levels shall strengthen the sense of responsibility and mission, set up the idea of solving administrative disputes according to law, give full play to the administrative reconsideration shall resolve disputes, protect the rights and correct illegal and Steel Sheds http://www.jingtabuilding.com/steel-sheds.html, the administrative reconsideration work really well.
The five countries & throughout
http://steelstructurewarehouse.blogspot.com/2013/06/the-five-countries-throughout.html
A, practical, housing in urban and rural areas construction system of the administrative reconsideration work for new progress
In recent years, the housing urban and rural construction departments at various levels shall, in accordance with the requirements of the CPC central committee and the state council, solidly carry out the administrative reconsideration work, in the maintenance of the legitimate rights and interests, promoting administration according to law, improve the administrationmanagementLevels have played an important role in such aspects.
(a) to resolve administrative dispute and safeguard the legitimate rights and interests
Around in the administrative reconsideration work adhere to the people-oriented, reconsideration for the people, pay attention to the substantial resolve contradictions. A mediation is innovation. Some provinces (districts) formed the housing urban and rural construction department in the pretrial and trial, three stages after careful mediation mechanism, some department leaders of some influential cases will personally presided over the mediation, a case through mediation settlement properly solved. Second, insist on is wrong must rectify. Some departments in practice on the basis of normative documents, to make administrative punishments and other illegal situation, the administrative body for reconsideration after trial confirmed illegal or revoked according to law, embodies the principle of has must rectify a mistake. 3 it is outside the association problem. Some departments for some do not belong to the scope of administrative reconsideration applications, rather than simply will not be accepted or rejected, but to instruct the lower administrative authority investigation in a timely mannerresearchSafe handling, the conflict.
(2) the innovation of working mechanism, improve the level of job of reconsideration
Around to meet the need of the administrative reconsideration case, explore the perfection of the mechanism of administrative reconsideration. A collective review mechanism is to establish a case. Many departments established administrative review committee, raise the level of the administrative reconsideration work. Presided over some departments set up department leadership, legal department and business department jointly participate in the trial system, legal counsel, please also attend when necessary, better results have been achieved. Second, the innovation works of reconsideration. Housing and urban-rural development many executes & other departments at the provincial level; Inform & before cutting throughout; System to be withdrawn, change, and to fulfill the reconsideration decision, the prior communication with the applicant, points out its existing problems. Some departments to strengthen in the process of working with the legislative affairs office, monitoring, reporting and other department coordinate linkage, to solve the problem of the parties reflect. Three is the introduction of external professionals to participate in the trial. Many departments inviteexpertsScholars and lawyers to participate in the trial, and some place to explore ways to establish the hearing system, improve the quality of the case is dealt with.
(3) play a role of hierarchical supervision, promote administration according to law
Everywhere pays attention to play a role of administrative reconsideration level supervision, promote administration according to law. One is determined to correct illegal behavior. Some departments such as practice for the applicant to apply for the information disclosure of not to give any reply, even though this information may not be the authorities publicly, but according to the government information open regulations should also inform the applicant. To give any reply on this behavior, the administrative body for reconsideration shall be ordered to make its reply duties. The second is to carry out the system of administrative review opinions. The administrative body for reconsideration subordinate departments found in case the problems existing in the administration according to law, through the issued by the administrative reconsideration opinions, cause the attention of subordinate departments, especially the main leadership, targeted for improvement, has played a good effect. Three is based on questioning and proposed improvements. Some departments at the provincial level for reconsideration cases more, questioning the related leadership, improvement measures are proposed. Some departments insist on carding the administrative reconsideration case analysis, summarizes the regularity problem, put forward countermeasures and Suggestions of administration according to law.
(4) drive system is perfect, improve the administrative level
The administrative reconsideration organ in case at the same time, pay attention to find the case behind the lack of system construction. Some places to handle administrative reconsideration cases found in the process of system problems, clear in the relevant documents in time.
In general, the housing urban and rural construction system of the administrative reconsideration work achieved positive results, to enhance the level of housing urban and rural construction system administration according to law. These achievements obtained, is not only the legislative affairs office of the state council and government legal agencies at all levels concern and support of result, also embodies the urban and rural housing construction system of leaders at all levels and the vast majority of administrative reconsideration workers sweat.
Second, the clarity of the situation, strengthen the administrative reconsideration work sense of responsibility
(a) rapid development of urban and rural construction, put forward a new challenge to administrative reconsideration work
Current our country is in a period of rapid urbanization development, at the end of 2011, China's urbanization rate reached 51.3%. Experience shows that the urbanization rate was 50% ~ 50% stage, is the social contradictions focus on Tuesday. Especially related to urbanization level of urban and rural construction field, performance is more obvious. Along with the rapid advance of urbanization, rapid progress in urban and rural construction, engineering construction scale expands unceasingly, the real estate asset attributes, various kinds of interests contradiction is becoming more and more manifest. Under this background, the administrative reconsideration cases in recent years the housing urban and rural construction system to keep high incidence. Since 2010, the caseload of housing urban and rural development are top in the ministries and commissions under the state council, especially caseload rose sharply in 2012. From local, urban and rural construction department of the four municipalities directly under the central government housing caseload high for many years, the housing urban and rural construction committee of Beijing, Shanghai, chongqing housing agency caseload for three years more than 200; Economic developed provinces such as jiangsu, zhejiang, guangdong housing total case is more, urban and rural construction department of jiangsu province housing construction department caseload in three consecutive years in more than 200 pieces. Though the administrative reconsideration cases mainly concentrated in the economically developed provinces, but with the development of urban and rural construction, in other parts of the case number is on the rise. Overall look, housing in urban and rural areas construction system of the administrative reconsideration cases in a period will increase quantity large, fast, want to have a clear understanding about this. The housing urban and rural construction department at various levels shall strengthen the sense of responsibility and mission, set up the idea of solving administrative disputes according to law, give full play to the administrative reconsideration shall resolve disputes, protect the rights and correct illegal and Steel Sheds http://www.jingtabuilding.com/steel-sheds.html, the administrative reconsideration work really well.
The five countries & throughout
http://steelstructurewarehouse.blogspot.com/2013/06/the-five-countries-throughout.html
2013年6月18日星期二
Treasure smelting technology welding recentlyresearchRoom smoothly carries on a foreign companyThe steel structureWelding procedure qualification program
Treasure smelting technology welding recentlyresearchRoom smoothly carries on a foreign companyThe steel structureWelding procedure qualification program, as a result ofThe Steel Structure Project oduction process, the welding is an essential link, so before welding process must be corresponding with the welding procedure qualification report as the backing, welding and welding operators need according to the corresponding certificatestandardTraining and exam. The welding procedure qualification and welding operator certificates are carried out in accordance with the AWSD14.1 and AWSD1.1.
Welding welding training center mainly to the company to provide technical service work, the main work content involves, suitable for welding production and the welding procedure qualification welding method, joint form, groove Angle,Steel Structure Project http://www.jingtabuilding.com/ts.html, specifications, etc. For the welding operator, welding position, specimen size, welding operation point and related knowledge training. Finally to minimize the number of procedure qualification and welder operation project to cover the entire welding process involved in the process of different forms.
Through welding training center staff training and mentoring of welding technology, all send to treasure smelting engineering national laboratory of welding specimen, in accordance with the relevant standards for appearance inspection, testing, nondestructive testing and mechanical properties of the test data all accord with standard, according to the test results issued by relevant test report, all test process, under the supervision of a third party witness the entire test data each other check real and effective. Welding laboratory according to the above test data, issue the welding procedure qualification report, and related welding personnel operating certificate of the project. Treasure smelting engineering technology co., LTD.
18 grand central alternate committee member
http://steelstructurewarehouse.blogspot.com/2013/06/18-grand-central-alternate-committee.html
Welding welding training center mainly to the company to provide technical service work, the main work content involves, suitable for welding production and the welding procedure qualification welding method, joint form, groove Angle,Steel Structure Project http://www.jingtabuilding.com/ts.html, specifications, etc. For the welding operator, welding position, specimen size, welding operation point and related knowledge training. Finally to minimize the number of procedure qualification and welder operation project to cover the entire welding process involved in the process of different forms.
Through welding training center staff training and mentoring of welding technology, all send to treasure smelting engineering national laboratory of welding specimen, in accordance with the relevant standards for appearance inspection, testing, nondestructive testing and mechanical properties of the test data all accord with standard, according to the test results issued by relevant test report, all test process, under the supervision of a third party witness the entire test data each other check real and effective. Welding laboratory according to the above test data, issue the welding procedure qualification report, and related welding personnel operating certificate of the project. Treasure smelting engineering technology co., LTD.
18 grand central alternate committee member
http://steelstructurewarehouse.blogspot.com/2013/06/18-grand-central-alternate-committee.html
2013年6月13日星期四
Stable cross web site new technology wavesThe steel structureApplication will be for the entire buildingThe steel structureIndustry brought new
Stable cross web site new technology wavesThe steel structureApplication will be for the entire buildingThe Steel Structure Project brought new opportunities. On April 22, network frame by the state quality inspection center and the shandong huaxing machinery (xuzhou) co., LTD. Jointly undertake construction steel structuredesignSpecification and the newmaterialNew technology stable cross will be held in xuzhou, from the unit of construction steel structure industry represents about 100 participants, during the meeting, in shandong huaxing machinery co., LTD. At first the waves of new web technology and production equipment for promotion.
Stable cross on the meeting, the national steelstandardTechnical committee LiuBaoShi technology commission payments points to our country current construction steel structurestandardAre introduced, from the China construction scienceresearchKPM structural steel division of ms JinJuanRu waves mainly introduced the new technology application of web steel structure technical specifications.
Subsequently, tsinghua big children, Dr. Fine waves on webh-beamDesign method and production equipment research and development and application in detail, including wave webh-beamCharacteristics, and the application of wave in the web project. It is understood that the product filled in China & other; Wave web h-beam CNC production equipment & throughout; The blank of 14 national patents, is listed as national key support of high-tech projects, the province key construction project.
Shandong huaxing machinery co., LTD. Wave web plate production line
The waves web demonstration project
After wave demonstration project stable cross web, network frame by the state quality inspection center's director, director of the king led the delegates a line of more than 60 people rushed to the shandong binzhou boxing, waves to visit shandong huaxing machinery co., LTD. Web demonstration project, as well as domestic first wave web automation production line. Steel Structure Project http://www.jingtabuilding.com/ts.html, xuzhou domain space structure co., LTD and xuzhou permanent group co., LTD., the leaders have to wave in the web production technology and application showed a strong interest, and with huaxing machinery company representative respectively carried on the thorough understanding and discussion.
People's Daily online for the first time exposure of wuhan duoleshi sale in stores
http://steelstructurewarehouse.blogspot.com/2013/06/peoples-daily-online-for-first-time.html
Stable cross on the meeting, the national steelstandardTechnical committee LiuBaoShi technology commission payments points to our country current construction steel structurestandardAre introduced, from the China construction scienceresearchKPM structural steel division of ms JinJuanRu waves mainly introduced the new technology application of web steel structure technical specifications.
Subsequently, tsinghua big children, Dr. Fine waves on webh-beamDesign method and production equipment research and development and application in detail, including wave webh-beamCharacteristics, and the application of wave in the web project. It is understood that the product filled in China & other; Wave web h-beam CNC production equipment & throughout; The blank of 14 national patents, is listed as national key support of high-tech projects, the province key construction project.
Shandong huaxing machinery co., LTD. Wave web plate production line
The waves web demonstration project
After wave demonstration project stable cross web, network frame by the state quality inspection center's director, director of the king led the delegates a line of more than 60 people rushed to the shandong binzhou boxing, waves to visit shandong huaxing machinery co., LTD. Web demonstration project, as well as domestic first wave web automation production line. Steel Structure Project http://www.jingtabuilding.com/ts.html, xuzhou domain space structure co., LTD and xuzhou permanent group co., LTD., the leaders have to wave in the web production technology and application showed a strong interest, and with huaxing machinery company representative respectively carried on the thorough understanding and discussion.
People's Daily online for the first time exposure of wuhan duoleshi sale in stores
http://steelstructurewarehouse.blogspot.com/2013/06/peoples-daily-online-for-first-time.html
2013年6月8日星期六
with generous plate repair project of baotou steel sheet mill in the final task & ndash
On March 21, 10 p.m., with generous plate repair project of baotou steel sheet mill in the final task & ndash; & ndash; Mill area on rolling mill frame the completion of the last two screws to replace mechanical &electrical corporation of China metallurgical group 2 kind of baotou Steel Structure Project mill board maintenance tasks be completed whole, 12 PM successful commissioning, the successful completion of the mechanical and electrical companyThe constructionTask.
Clad steel plate factory to repair project is officially kicked off on March 11, in order to ensure the successful completion of the maintenance task, to provide satisfactory service for the owners, mechanical and electrical company established a dedicated maintenance organization, for the project construction, technology, safety, quality, propaganda, etc are specified the specific charge, and arrange on duty day and night. In the project, the company undertook the casting machine, shear, rolling mill district demolition, repair, installation construction tasks, such as 1.07 million, total project amount for nine days, total duration unit main unit have a mechanical and electrical, binary, three points and repair to a branch. The construction period is short, the quantity is big, the company will be a strict technology and strength test. Strategize for this kind of situation, the company leadership, has carried on the comprehensive thorough deployment, to the project, assemble force, experienced, skilled construction team form into a good soldier will fight. Unit after its adequate preparations, the company worker then into tension construction, the maintenance task according to the requirements of the network smoothly. Responsible for the maintenance engineering company, vice manager visit overhaul scene every day, to the project construction, technology, safety, quality, etc. Strict control. The company all war worker grasped the nettle and overcome all kinds of unfavorable factors, maintenance science organization, careful arrangement, construction personnel 24 hours of continuous operation, meticulous in every working procedure, the trouble to detect. Late March 18, bilateral shear moving side back to the oil retaining ring when loading, found a crack of oil ring roots, kitting in bottom hole dislocation, cannot be installed, if provided to the factory repair, construction period is expected within 24 hours, electrical and mechanical branch actively cooperate with party a repair plan, and arrange for an experienced welder spot polishing repair, repair welding takes 2 hours to complete, will online, to this, the party a daily project meeting on praise and thank, in addition, maintenance engineering command LiuPeiRan was named baotou overhaul engineering advanced individual.
The baotou lenient plate smooth completion of the maintenance engineering, mechanical and electrical company give full play to the mechanical and dare to fight the spirit, in strict accordance with the installation of equipment specificationstandardCivilization construction, seize the progress while, hold & other Quality first & throughout; Principle, further has established a professional mechanical and electrical company brand, won the trust of the baotou Steel Structure Project http://www.jingtabuilding.com/ts.html group. (mechanical and electrical company Zhang Ting)
Painters are for xinjiang pavilion drawing murals
http://steelstructurewarehouse.blogspot.com/2013/06/painters-are-for-xinjiang-pavilion.html
Clad steel plate factory to repair project is officially kicked off on March 11, in order to ensure the successful completion of the maintenance task, to provide satisfactory service for the owners, mechanical and electrical company established a dedicated maintenance organization, for the project construction, technology, safety, quality, propaganda, etc are specified the specific charge, and arrange on duty day and night. In the project, the company undertook the casting machine, shear, rolling mill district demolition, repair, installation construction tasks, such as 1.07 million, total project amount for nine days, total duration unit main unit have a mechanical and electrical, binary, three points and repair to a branch. The construction period is short, the quantity is big, the company will be a strict technology and strength test. Strategize for this kind of situation, the company leadership, has carried on the comprehensive thorough deployment, to the project, assemble force, experienced, skilled construction team form into a good soldier will fight. Unit after its adequate preparations, the company worker then into tension construction, the maintenance task according to the requirements of the network smoothly. Responsible for the maintenance engineering company, vice manager visit overhaul scene every day, to the project construction, technology, safety, quality, etc. Strict control. The company all war worker grasped the nettle and overcome all kinds of unfavorable factors, maintenance science organization, careful arrangement, construction personnel 24 hours of continuous operation, meticulous in every working procedure, the trouble to detect. Late March 18, bilateral shear moving side back to the oil retaining ring when loading, found a crack of oil ring roots, kitting in bottom hole dislocation, cannot be installed, if provided to the factory repair, construction period is expected within 24 hours, electrical and mechanical branch actively cooperate with party a repair plan, and arrange for an experienced welder spot polishing repair, repair welding takes 2 hours to complete, will online, to this, the party a daily project meeting on praise and thank, in addition, maintenance engineering command LiuPeiRan was named baotou overhaul engineering advanced individual.
The baotou lenient plate smooth completion of the maintenance engineering, mechanical and electrical company give full play to the mechanical and dare to fight the spirit, in strict accordance with the installation of equipment specificationstandardCivilization construction, seize the progress while, hold & other Quality first & throughout; Principle, further has established a professional mechanical and electrical company brand, won the trust of the baotou Steel Structure Project http://www.jingtabuilding.com/ts.html group. (mechanical and electrical company Zhang Ting)
Painters are for xinjiang pavilion drawing murals
http://steelstructurewarehouse.blogspot.com/2013/06/painters-are-for-xinjiang-pavilion.html
2013年6月6日星期四
Large span roof indeed & other; Can't afford to injury & throughout
Large span roof indeed & other; Can't afford to injury & throughout; ?
On March 9, encountered strong winds dust weather in Beijing, the Beijing capital international airport T3 terminal building roofs metal plates for the third time by wind, netizens have spit travel & other; Used throughout the &; . Large span roof of wind resistance ability, really so fragile?
Is not a structuredesignTo blame
Day 11, capital airport area winds of up to 30 meters per second, wind grade 11 or above, strong cyclone in the capital airport terminal 3 international area northeast corner of the roof plate local was torn. Since then, the airport is not a further interpretation on the the cause of the accident.
Is the scene of the accident description view, and on December 10, 2010 and 2010 on November 22, local swept up by the strong wind, T3 terminal building roof due to roof was pulled, the outermost cuticle plates made metal plate below the pale yellow rock heat preservation quilt the wind blows away.
According to understand, T3 is by the famous British architect Norman & middot; Foster design, as the design is the architectural design of BeijingresearchThe courtyard.
Beijing architectural design institute a spoke on condition of anonymityexpertsSaid, is this a few times the accident itself, does not involve the problem of structure design, because the T3 roofing structure part and didn't appear because the wind damage, the main reason or fixed roof skin, connection, especially sheet metal process method of sealing the side problem.
For reasons of cost control, "he said," domestic manufacturer imported from Germany to the originally a whole roof manufacturing method with some simplified processing, therefore, the performance, quality roofing could end up some deviation.
& other; Once the metal plate sealing side become loose, easy to open local winds. If can increase some bolt to reinforce joint, the roof fixed can be improved. Throughout the &; He thought.
Large span cantilever wind sensitivity is high
In fact, large public buildings roof damage, blown down phenomenon is not only the T3 alone, these buildings are often some of the large span structure, roof tend to weight, large flexibility, its ability to resist wind pressure is particularly important.
Capital airport with big span time three pyramid steel reticulated shell, roof shows herringbone, while in the three-dimensional space, the shape of the roof is not a piece of plate is the same, is typical of different buildings.
Swiss registered architects, engineers association representative in China, however, said zhang wan SAN: large span itself does not mean weak ability to resist wind load, but large-span structures have large area beyond the part of seg, cantilever, its surface have been up and down the wind effect, the actual wind is equal to the resultant force on the surface of the up and down, therefore, was part of the wind load mainly, is also the most sensitive part of the wind pressure.
& other; This is similar to open an umbrella, wind pressure, the greater the umbrella in front edge of the greater the negative pressure. Throughout the &; He explained that the area of the cantilever and the shape of the front would affect roof the size of the wind load.
Assuming that found in the experiment, cantilever local under wind pressure will be too large, or be able to improve building structure reinforcement andmaterialTo improve physical properties of the way.
Zhang wan said, local structure reinforcement can be for cantilever structure with steel bar reinforcement, or the strength of cantilever root structure and cross section area of a certain amount of reserve.
In addition, the roof structure of epidermis and adhesion area, location and strength of the adhesion as well as the method, also to be able to echo the former enough resistance to wind pressure of the design requirements. It is often through secondary design and manufacturerThe constructionrocess to ensure that mainly involves process method.
In his view, if the T3 terminal building structure does not appear problem, in general, the problem is most likely to appear on the surface of the fixed.
If the metal plate is screwed to theThe Steel Structure Project On, once have a piece of plate screw corrosion protection is not enough, the surface stress point no alignment, the fixed ability could be affected; Or between epidermis and structure, metal plate and metal plate between the flexible handle is not enough, not to local wind suction have very good weakening effect and so on.
Wind tunnel tests would be quite safe
It is easy to understand, in order to ensure the safety of long-span structures accurately calculating the wind load is very important. Wind load of the building, however, affected by many factors, for example, a once-in-a-century winds, terrain roughness of ground, roof height and slope, surrounding buildings etc. It is because of the wind load is difficult to estimate the influence of the civil engineering department of tsinghua university professor Qian Jiaru said, large and key construction must through building model wind tunnel test.
So-called architectural wind tunnel test is simply on the basis of movement principle of relativity, the building model in the duct of artificial, man-made air flow, simulation of air flow to pressure generated by the project structure, this also is the experiment building wind parameters. And simulation environment, mainly rely on meteorological department on areas in which architecture has long-term observation records, as well as mathematicalstatisticsAnalysis of the wind direction, wind speed, and so on and so forth.
After T3 terminal building for the first time by the wind waves, the official explanation, at present our country architectural designstandardIs to fight against the winds of 26.8 meters per second, which is 11 level wind, and T3 terminal building roof is in accordance with the higherstandardDesign construction, to fight against the winds of 28.3 meters per second, which is grade 12 in the wind.
Wind tunnel test, however, it is difficult to include special circumstances wind design, therefore, although it is wind parameters testing application architecture at present the most scientific method, still can't be sure.
Is presented in this paper, wind tunnel test and theoretical data, building can withstand wind ultimately be achieved through the construction process. Wind tunnel test, in short, once appear during the construction process, it may lose its original value.
Design and construction process
Zhang wan SangJieShao, in fact, the domestic construction industry standard of structure design is relatively high, the safety coefficient of reserved a certain extent, and even has caused waste. So, in theory should not have too many accidents.
& other; Problem is that the domestic architectural design, structural design, each detail of the second design is layer upon layer disjointed. Throughout the &; He said.
& other; We tend to spend a small amount of the cost foreign building, pleaseThe designerDo a beautiful concept design, and then by domestic structuresThe designerick up bar, in the process, the original design scheme is likely to go out of form. And once the manufacturer and the contractor's second design cohesion stage, architects will greatly to let it go, and dominated by manufacturer and the contractor. Finally, not only the construction is difficult to reflect architect's original intention, once an accident, also can cause the parties mutual buck-passing situation & throughout; .
Unlike domestic, western is architect shall assume overall responsibility for the building field, that is to say, the whole construction project was organized by the architect to form structure, detail structure, mechanical and electrical and other professional team, carry out design concept to the final implementation level.
The responsibility of general control mechanism, apparently, more emphasis on the whole process of project implementationmanagement. He says that while the current domestic began to attach importance to architectural designmanagementroblem, however, may not undertake the project management company is proficient in building design, process management, often only stay in control of the schedule.
To the face of luxury goods, not to the lining of luxury goods
In recent years, the domestic architectural aesthetic seems increasingly towards a personalized, exaggerated, if construction is largely a regional cultural carrier, so, they & other Do STH unconventional or unorthodox & throughout; This is understandable.
& other; But, at present, the domestic some new terminal in a paradox. Throughout the &; Zhang SAN think, behind those who pursue the form unique, is does not match with the not enough in-depth elaboration of design and construction. & other; Will this look and real, in the form of coarse, in many details. Throughout the &;
In fact, a simple architecture, if you have solid, perfect construction technology, you can give us to fully. Instead, a beautiful and different building structures, if you want to stand for long, even if they don't consider the loss of the architectural space, only consider cost, also will be more expensive than ordinary buildings, and even much more expensive, so, where is the necessity of the cost.
In his view, the more important is, if true to one and Steel Structure Project Luxury & throughout; Have strong desire, but the but again don't want to really get what it takes cost, so it can only be one and other High imitation goods & throughout; . And so large scale high copy product, finally only by using it to assume the risk of all its people.
A race against time
http://steelstructurewarehouse.blogspot.com/2013/06/a-race-against-time.html
On March 9, encountered strong winds dust weather in Beijing, the Beijing capital international airport T3 terminal building roofs metal plates for the third time by wind, netizens have spit travel & other; Used throughout the &; . Large span roof of wind resistance ability, really so fragile?
Is not a structuredesignTo blame
Day 11, capital airport area winds of up to 30 meters per second, wind grade 11 or above, strong cyclone in the capital airport terminal 3 international area northeast corner of the roof plate local was torn. Since then, the airport is not a further interpretation on the the cause of the accident.
Is the scene of the accident description view, and on December 10, 2010 and 2010 on November 22, local swept up by the strong wind, T3 terminal building roof due to roof was pulled, the outermost cuticle plates made metal plate below the pale yellow rock heat preservation quilt the wind blows away.
According to understand, T3 is by the famous British architect Norman & middot; Foster design, as the design is the architectural design of BeijingresearchThe courtyard.
Beijing architectural design institute a spoke on condition of anonymityexpertsSaid, is this a few times the accident itself, does not involve the problem of structure design, because the T3 roofing structure part and didn't appear because the wind damage, the main reason or fixed roof skin, connection, especially sheet metal process method of sealing the side problem.
For reasons of cost control, "he said," domestic manufacturer imported from Germany to the originally a whole roof manufacturing method with some simplified processing, therefore, the performance, quality roofing could end up some deviation.
& other; Once the metal plate sealing side become loose, easy to open local winds. If can increase some bolt to reinforce joint, the roof fixed can be improved. Throughout the &; He thought.
Large span cantilever wind sensitivity is high
In fact, large public buildings roof damage, blown down phenomenon is not only the T3 alone, these buildings are often some of the large span structure, roof tend to weight, large flexibility, its ability to resist wind pressure is particularly important.
Capital airport with big span time three pyramid steel reticulated shell, roof shows herringbone, while in the three-dimensional space, the shape of the roof is not a piece of plate is the same, is typical of different buildings.
Swiss registered architects, engineers association representative in China, however, said zhang wan SAN: large span itself does not mean weak ability to resist wind load, but large-span structures have large area beyond the part of seg, cantilever, its surface have been up and down the wind effect, the actual wind is equal to the resultant force on the surface of the up and down, therefore, was part of the wind load mainly, is also the most sensitive part of the wind pressure.
& other; This is similar to open an umbrella, wind pressure, the greater the umbrella in front edge of the greater the negative pressure. Throughout the &; He explained that the area of the cantilever and the shape of the front would affect roof the size of the wind load.
Assuming that found in the experiment, cantilever local under wind pressure will be too large, or be able to improve building structure reinforcement andmaterialTo improve physical properties of the way.
Zhang wan said, local structure reinforcement can be for cantilever structure with steel bar reinforcement, or the strength of cantilever root structure and cross section area of a certain amount of reserve.
In addition, the roof structure of epidermis and adhesion area, location and strength of the adhesion as well as the method, also to be able to echo the former enough resistance to wind pressure of the design requirements. It is often through secondary design and manufacturerThe constructionrocess to ensure that mainly involves process method.
In his view, if the T3 terminal building structure does not appear problem, in general, the problem is most likely to appear on the surface of the fixed.
If the metal plate is screwed to theThe Steel Structure Project On, once have a piece of plate screw corrosion protection is not enough, the surface stress point no alignment, the fixed ability could be affected; Or between epidermis and structure, metal plate and metal plate between the flexible handle is not enough, not to local wind suction have very good weakening effect and so on.
Wind tunnel tests would be quite safe
It is easy to understand, in order to ensure the safety of long-span structures accurately calculating the wind load is very important. Wind load of the building, however, affected by many factors, for example, a once-in-a-century winds, terrain roughness of ground, roof height and slope, surrounding buildings etc. It is because of the wind load is difficult to estimate the influence of the civil engineering department of tsinghua university professor Qian Jiaru said, large and key construction must through building model wind tunnel test.
So-called architectural wind tunnel test is simply on the basis of movement principle of relativity, the building model in the duct of artificial, man-made air flow, simulation of air flow to pressure generated by the project structure, this also is the experiment building wind parameters. And simulation environment, mainly rely on meteorological department on areas in which architecture has long-term observation records, as well as mathematicalstatisticsAnalysis of the wind direction, wind speed, and so on and so forth.
After T3 terminal building for the first time by the wind waves, the official explanation, at present our country architectural designstandardIs to fight against the winds of 26.8 meters per second, which is 11 level wind, and T3 terminal building roof is in accordance with the higherstandardDesign construction, to fight against the winds of 28.3 meters per second, which is grade 12 in the wind.
Wind tunnel test, however, it is difficult to include special circumstances wind design, therefore, although it is wind parameters testing application architecture at present the most scientific method, still can't be sure.
Is presented in this paper, wind tunnel test and theoretical data, building can withstand wind ultimately be achieved through the construction process. Wind tunnel test, in short, once appear during the construction process, it may lose its original value.
Design and construction process
Zhang wan SangJieShao, in fact, the domestic construction industry standard of structure design is relatively high, the safety coefficient of reserved a certain extent, and even has caused waste. So, in theory should not have too many accidents.
& other; Problem is that the domestic architectural design, structural design, each detail of the second design is layer upon layer disjointed. Throughout the &; He said.
& other; We tend to spend a small amount of the cost foreign building, pleaseThe designerDo a beautiful concept design, and then by domestic structuresThe designerick up bar, in the process, the original design scheme is likely to go out of form. And once the manufacturer and the contractor's second design cohesion stage, architects will greatly to let it go, and dominated by manufacturer and the contractor. Finally, not only the construction is difficult to reflect architect's original intention, once an accident, also can cause the parties mutual buck-passing situation & throughout; .
Unlike domestic, western is architect shall assume overall responsibility for the building field, that is to say, the whole construction project was organized by the architect to form structure, detail structure, mechanical and electrical and other professional team, carry out design concept to the final implementation level.
The responsibility of general control mechanism, apparently, more emphasis on the whole process of project implementationmanagement. He says that while the current domestic began to attach importance to architectural designmanagementroblem, however, may not undertake the project management company is proficient in building design, process management, often only stay in control of the schedule.
To the face of luxury goods, not to the lining of luxury goods
In recent years, the domestic architectural aesthetic seems increasingly towards a personalized, exaggerated, if construction is largely a regional cultural carrier, so, they & other Do STH unconventional or unorthodox & throughout; This is understandable.
& other; But, at present, the domestic some new terminal in a paradox. Throughout the &; Zhang SAN think, behind those who pursue the form unique, is does not match with the not enough in-depth elaboration of design and construction. & other; Will this look and real, in the form of coarse, in many details. Throughout the &;
In fact, a simple architecture, if you have solid, perfect construction technology, you can give us to fully. Instead, a beautiful and different building structures, if you want to stand for long, even if they don't consider the loss of the architectural space, only consider cost, also will be more expensive than ordinary buildings, and even much more expensive, so, where is the necessity of the cost.
In his view, the more important is, if true to one and Steel Structure Project Luxury & throughout; Have strong desire, but the but again don't want to really get what it takes cost, so it can only be one and other High imitation goods & throughout; . And so large scale high copy product, finally only by using it to assume the risk of all its people.
A race against time
http://steelstructurewarehouse.blogspot.com/2013/06/a-race-against-time.html
2013年6月4日星期二
make Chinese people shock
A crash in 2011, make Chinese people shock, let countless families sad at the same time, also will be high iron & other accessories production enterprises; The mood throughout the &; Pull to the bottom. Plus caused by liu arrested wet cooling high-speed rail construction, including gem-year industrial & other; Bosses & throughout; Have to suffer.
Railway construction lift in 2013fastenersCorporate & Steel Structure Project; Meet spring & throughout;
After lasted rectified trough period, high-speed trains at the beginning of the end of March 2012 gradually restored, but progress is slow. But the situation seems to have a silver lining. According to reports, the ministry of railways provisional national railway infrastructure construction investment plans to 2013, 530 billion yuan, 14 billion yuan higher than in 2012. Along with age in the new material, gem-year industrial and individual stocks rising iron 2 bureaus, etc. Many information display, fastener manufacturing enterprises will usher in another & other; Throughout the spring &; .
Fastener business & other; Should & throughout;
In August 2011, once a cross-country savior role high speed rail fastener business, became gem-year group holding a hot potato. Base the fastener production workshop is in shutdown state, basic workers has ten to seven or eight. Due to the production, workers have said, starting in June, workers' wages has dropped below 1500 yuan from 3500 yuan.
Gem-year industrial chairman secretary TuZhiQing once in an interview, the company has stopped to supply all building high-speed rail fasteners, high-speed events for the company & other; Has brought the unprecedented impact & throughout; , calling it a moment & other; Very difficult & throughout; . According to the company's third-quarter earnings, according to the third quarter, gem-year industrial net profit of 7.811 million yuan, down 90.59% year on year, fell 87.8%.
In this case, the gem-year industrial decided to accelerate the construction of hardware sales logistics system, and by the pure production fastener enterprises downstream stretches fastener manufacturing and sales and service as a whole transformation to gain great development.
Gem-year industrial experience, only to suffer in the high-speed rail cooling of a case.
Development & other fastener enterprises to meet again Throughout the spring &;
Tentative, according to the source of railways in 2013 the national railway infrastructure construction investment plan for $530 billion, slightly higher than the plan in early 2012, 2012 yuan. The $530 billion investment plan considering the currentThe constructionAbility, the construction funds involved are guaranteed.
According to his introduction, according to the construction schedule, tianjin railway, tianjin qin ke designed, hangzhou high-speed, deep mansion railroad, into cotton le guest, to achieving railway, LiuNa inter-city, chongqing railway, railway scales and Shen Dan guest will be gradually put into operation in 2013. Final project investment scale, however, remains to be in the ministry of railways annual work meeting to finalize.
And at the end of 2012, & other; Been cross & throughout; High rail network planning pre-eminence in Beijing port section will on high-speed rail from Beijing to shenzhen, put into operation at the same time to dalian and Harbin passenger dedicated line.
According to the China railway & other; The 12th five-year & throughout; Planning to & other; The 12th five-year & throughout; The final, China's high-speed rail & other; Been cross & throughout; Will be built basic skeleton and surrounded by railway.
Transformation and upgrading firmly grasp opportunities for development
& other; The 12th five-year & throughout; Is China's fastener industry from large to strong critical period. Represented by fasteners, the basis of the foundational industry in the equipment manufacturing industry in our country, but also is the important foundation of national economy construction in Steel Structure Project http://www.jingtabuilding.com/ts.html.
But at present industry development is faced with many problems.
Marking the river wall through independent research and development and the technological frontier in the industry
http://steelstructurewarehouse.blogspot.com/2013/06/marking-river-wall-through-independent.html
Railway construction lift in 2013fastenersCorporate & Steel Structure Project; Meet spring & throughout;
After lasted rectified trough period, high-speed trains at the beginning of the end of March 2012 gradually restored, but progress is slow. But the situation seems to have a silver lining. According to reports, the ministry of railways provisional national railway infrastructure construction investment plans to 2013, 530 billion yuan, 14 billion yuan higher than in 2012. Along with age in the new material, gem-year industrial and individual stocks rising iron 2 bureaus, etc. Many information display, fastener manufacturing enterprises will usher in another & other; Throughout the spring &; .
Fastener business & other; Should & throughout;
In August 2011, once a cross-country savior role high speed rail fastener business, became gem-year group holding a hot potato. Base the fastener production workshop is in shutdown state, basic workers has ten to seven or eight. Due to the production, workers have said, starting in June, workers' wages has dropped below 1500 yuan from 3500 yuan.
Gem-year industrial chairman secretary TuZhiQing once in an interview, the company has stopped to supply all building high-speed rail fasteners, high-speed events for the company & other; Has brought the unprecedented impact & throughout; , calling it a moment & other; Very difficult & throughout; . According to the company's third-quarter earnings, according to the third quarter, gem-year industrial net profit of 7.811 million yuan, down 90.59% year on year, fell 87.8%.
In this case, the gem-year industrial decided to accelerate the construction of hardware sales logistics system, and by the pure production fastener enterprises downstream stretches fastener manufacturing and sales and service as a whole transformation to gain great development.
Gem-year industrial experience, only to suffer in the high-speed rail cooling of a case.
Development & other fastener enterprises to meet again Throughout the spring &;
Tentative, according to the source of railways in 2013 the national railway infrastructure construction investment plan for $530 billion, slightly higher than the plan in early 2012, 2012 yuan. The $530 billion investment plan considering the currentThe constructionAbility, the construction funds involved are guaranteed.
According to his introduction, according to the construction schedule, tianjin railway, tianjin qin ke designed, hangzhou high-speed, deep mansion railroad, into cotton le guest, to achieving railway, LiuNa inter-city, chongqing railway, railway scales and Shen Dan guest will be gradually put into operation in 2013. Final project investment scale, however, remains to be in the ministry of railways annual work meeting to finalize.
And at the end of 2012, & other; Been cross & throughout; High rail network planning pre-eminence in Beijing port section will on high-speed rail from Beijing to shenzhen, put into operation at the same time to dalian and Harbin passenger dedicated line.
According to the China railway & other; The 12th five-year & throughout; Planning to & other; The 12th five-year & throughout; The final, China's high-speed rail & other; Been cross & throughout; Will be built basic skeleton and surrounded by railway.
Transformation and upgrading firmly grasp opportunities for development
& other; The 12th five-year & throughout; Is China's fastener industry from large to strong critical period. Represented by fasteners, the basis of the foundational industry in the equipment manufacturing industry in our country, but also is the important foundation of national economy construction in Steel Structure Project http://www.jingtabuilding.com/ts.html.
But at present industry development is faced with many problems.
Marking the river wall through independent research and development and the technological frontier in the industry
http://steelstructurewarehouse.blogspot.com/2013/06/marking-river-wall-through-independent.html
2013年6月2日星期日
Opera wild elephant island boasts island landmarks
Opera wild elephant island boasts island landmarks, so-called business landmark, gongbei times square landmark ShiZiMen 680 meters tall claims to do the zhuhai-macau & hellip; & hellip; Jida now, the most mature & other; Small triangle & throughout; Business circle, it is said that will tear down the pearl, pull down & other; Duty free & throughout; And tear down international trade, building a 385 - metre - high city new landmark. Steel Structure Project, landmark again!
Than the big, than high, or than its glorious? Whether behind contains some worship, all of these show the officials and the capital of landmarks. The reason may be that leave a building easier than leave word of mouth, engaged in prime locations than engaged ranking the actual market. Just, everyone seems to forget to ask the residents of the city, you need not to need landmarks, need what kind of landmarks?
Due to terrain, zhuhai downtown development depended, xiangzhou, jida, gongbei have their center, jida district recognized the most mature and stable, & other; Duty free & throughout; More contributions with a whole generation of zhuhai people's collective memory. Of course, there is no denying the fact that business is still not perfect, the scale of form a complete set to improve. This year zhuhai & other; Two sessions throughout the &; , the municipal people's representatives, bead the chairman Ma Chanlan said, jida district business area of nearly 15 square meters, parking space is less than 400, 9 continent cities does not even have a special parking space, she suggested that the government should accelerate & other; The heart of the city & throughout; The transformation. But who would have thought that transformation is to tear down everything, use white out here and bold to paint a piece of blank sheet of paper, draw landmark 385 meters of myth?
Fryer, network, all kinds of problems sprung up: why do you want to open all my emotions? Jida modest & such a high building? Money is where you come from, real estate business operations or the taxpayer money? Hotel apartment office again, is there any business? Big demolition in the city centre to build and how many store worker DaiGang, around how many residents were affected, due to road traffic how to avoid & hellip; & hellip;
Before these problems can not able to give satisfactory answer, was first released & other; Basic determine years construction & throughout; The timetable. Is can feel & other related department; Hard dry matter & throughout; & other; More thanresearchSome questions and talk less, & throughout; ; But for residents of the city, this is incisively and vividly displayed the arrogance of power, his own opinions are small.
Tenants will not spare house, outsideexperts, Steel Structure Project http://www.jingtabuilding.com/ts.html, locals living in the city's residents, most able to say what & want to other The heart of the city & throughout; .
Affordable housing for the first quarter has been finished 41%
http://steelstructurewarehouse.blogspot.com/2013/06/affordable-housing-for-first-quarter.html
Than the big, than high, or than its glorious? Whether behind contains some worship, all of these show the officials and the capital of landmarks. The reason may be that leave a building easier than leave word of mouth, engaged in prime locations than engaged ranking the actual market. Just, everyone seems to forget to ask the residents of the city, you need not to need landmarks, need what kind of landmarks?
Due to terrain, zhuhai downtown development depended, xiangzhou, jida, gongbei have their center, jida district recognized the most mature and stable, & other; Duty free & throughout; More contributions with a whole generation of zhuhai people's collective memory. Of course, there is no denying the fact that business is still not perfect, the scale of form a complete set to improve. This year zhuhai & other; Two sessions throughout the &; , the municipal people's representatives, bead the chairman Ma Chanlan said, jida district business area of nearly 15 square meters, parking space is less than 400, 9 continent cities does not even have a special parking space, she suggested that the government should accelerate & other; The heart of the city & throughout; The transformation. But who would have thought that transformation is to tear down everything, use white out here and bold to paint a piece of blank sheet of paper, draw landmark 385 meters of myth?
Fryer, network, all kinds of problems sprung up: why do you want to open all my emotions? Jida modest & such a high building? Money is where you come from, real estate business operations or the taxpayer money? Hotel apartment office again, is there any business? Big demolition in the city centre to build and how many store worker DaiGang, around how many residents were affected, due to road traffic how to avoid & hellip; & hellip;
Before these problems can not able to give satisfactory answer, was first released & other; Basic determine years construction & throughout; The timetable. Is can feel & other related department; Hard dry matter & throughout; & other; More thanresearchSome questions and talk less, & throughout; ; But for residents of the city, this is incisively and vividly displayed the arrogance of power, his own opinions are small.
Tenants will not spare house, outsideexperts, Steel Structure Project http://www.jingtabuilding.com/ts.html, locals living in the city's residents, most able to say what & want to other The heart of the city & throughout; .
Affordable housing for the first quarter has been finished 41%
http://steelstructurewarehouse.blogspot.com/2013/06/affordable-housing-for-first-quarter.html
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