Ten thousand tons of steel In order to xuzhou "bird's nest" high precision

In order to xuzhou "bird's nest" high precision

As a key project of urban construction and the eighteen ShengYunHui home museum, located in the city of xuzhou Olympic sports center will be in June this year completed the construction of venues. Last October, Olympic sports center stadium into steel structure installation, up to now project progress smoothly, and is expected to steel structure installation can be completed all before the Spring Festival. At the appointed time, xuzhou "bird's nest" will be proud high precision and appear in the public eyes.

The "bird's nest" will be the new landmark of xuzhou

Xuzhou Olympic stadium steel structure construction, focus on the most advanced construction steel structure technology, the xuzhou "bird's nest", will become the new landmark of city development.

According to xuzhou Olympic sports do on-site technical controller introduces, xuzhou Olympic sports center stadium with a total construction area of about 53000 square meters, with a total seating 35000. At present, the two figures in addition to outside nanjing in jilin province, the city is in the first place.

Olympic sports center stadium by the steel structure of the root of huge steel pipe, steel tube wall thickness of the largest to 5 cm, steel tube maximum weight to 25 tons. It is reported, the steel tube first in ground welding into steel structure parts, then the fifty to 260 tonnage of the crane to design position, finally welding steel structure as a whole.

With more than 10000 tons of steel construct such a monster, need is not only the strength of the giant, need more "four two dial one thousand jins" technology and wisdom. It is reported, the London Olympic stadium - "London bowl" of the prestressed steel structure technology, this time also use to xuzhou construction of the Olympic sports center. Steel structure cantilever maximum length of 44 meters, without any middle pillars, on-site take method is to use the ring and radial the two directions of the prestressed technology, with high strength wire, save nearly 2000 tons of steel, and at the same time improving the entire stadium, the safety of wind and earthquake resistance.

A place to spot welding all day

On January 2,, the reporter in the construction of Olympic sports center stadium scene, large oval stand subject completed, "bird's nest" early prototype. The several machines crane start, steel structure HanHua splash on site, a busy scene.

According to introducing, xuzhou Olympic "bird's nest" and the design of the bird's nest in Beijing, similar one huge steel pipe through welding, form shrouded in building outside hollow out modelling. Due to the steel structure weighs tens to hundreds of tons, field there are twenty table crane, tonnage from the, 150, 250, 260 tons of inequality.

Steel structure piece welding closure before need a strong point, inside and outside the stadium were set up more than twenty temporary pile. These work pile appearance is orange red, appear particularly bright. The highest working pile have 45 meters high, supporting steel structure west stand the top girder. It is reported that these work pile for steel structure after closure, will gradually removed.

Due to the stadium is mostly three-dimensional curved and twisted, 3 d components, the complicated space structure to improve the engineering accuracy in millimeter.

In the field of the assembler to tell a reporter, every two steel pipe between the solder joints to pass four or five welding and inspection testing. At a solder joint is complete to pass the time of day. Weld is completed, solder joint strength than the strength of the steel itself is even higher.

Reporters on the scene saw a strange phenomenon, outdoor temperature degrees below zero, but several painter is still in the busy. In this temperature, the paintwork need how long to dry? As we have learned, the steel tube surface paint with polyurethane speed dry paint, a total of three layers need to brush, each layer only more than ten minutes to dry thoroughly, so not because the temperature cold and shutdown.

According to the planning, Olympic sports center stadium in steel structure project will be completed by the Spring Festival, and then will begin to curtain wall project.