2013年9月9日星期一

Jingta Wire Mesh is specialized in the production of shandong area biggest barrier board manufacturers

Jingta Wire Mesh is specialized in the production of shandong area biggest barrier board manufacturers, under the  new guardrail plate installation and related considerations
Construction technical personnel familiar with and understand the design drawings and construction specifications related to, and together with the construction personnel to the construction site and design drawings one by one check, find out the construction section of the pile number, all kinds of park fence and the structure barrier set location, at the same time to do a good job of construction equipment and materials comes into play.
2, waveform parapet lofting
(1) lofting, pillar should be according to design drawings, and to interchange, Bridges, channels, culverts, and as the locus of control, such as ranging positioning, can adjust the period of adjusting the spacing, and use the oddment allocation methods dealing with spacing.
(2), for the precise lofting and guarantee the fence line, segment for pile no. Review and closure.
(3), pillar lofting, should investigate the surface state of each pillar position, in case of underground communication pipe, drain, etc., or insufficient depth of a buried culvert top, should adjust some of the pillar position, change the column fixed way.
3, waveform guardrail installation
Column hole
(1), according to the design drawing, and check with coordinated road alignment.
(2) basic information, such as shoulder allows, scoring method is used to set the vertical pile, construction should be accurate positioning, should to the design depth in column into the soil, when into too deep, not only will be post out to correct, and shall pull it all out, after waiting for foundation compaction scored again.
(3), pillar in difficulties, can use drilling method or excavation method column installation. Drilling method is used to install, support material should be the same as the roadbed backfill after positioning, and layered tamping dense filling; Excavation method is used to bury pillar, backfill soil should adopt good materials and hierarchical compaction (each layer thickness is not more than 15 cm), backfill soil compaction degree should not be less than the adjacent undisturbed soil.
(4), set in the structure of fence post, construction general in structure construction concrete base has been completed. Basis using the reserved hole, the hole should be remove sundries, sucking up water accumulation in the hole, will good asphalt coating in the bottom of a hole again, and then put into the post, control the elevation. You can note sand around the pillar. When sand filling must keep the correct position and verticality of the post. After the sand compaction, can use asphalt sealing, prevent the rain water leakage into the hole.
(5), in construction of asphalt pavement section of pillar, column pit from subgrade under the surface 5 cm use same as the roadbed backfill material and hierarchical compaction, the rest part adopts the same as the pavement material backfilling and compaction.
After 6, post installation in place, the horizontal direction and vertical direction to form a smooth line.
All landowners, the end of the gradual guardrail construction, should be stipulated in the design of the coordinates of the strict control of the pillar position, pay attention to the parabolic.
4, waveform girder installation
(1), the wave beam installation, through splice bolts joining together each other, and the connecting bolt is fixed on the column and beam. Wave beam splicing direction is the key to install, construction guarantee lap direction should be consistent with the direction.
(2), the wave beam during the installation process should be continuously adjusted, so the connection bolt and splice bolts should not be tighten too soon, so that during the installation process using waveform beam slotted hole to adjust in time, make it formed a smooth linear, avoid partial concave-convex.
(3), the wave beam top surface when installation should be coordinated with road vertical curve. And check the fence line, when determining the line is straight and smooth, may be the last screw down the bolt.
5, matters needing attention
ile in construction should be prepared to (1), section number to find accurate position. Layout should be accurate, error within the prescribed scope.
(2) pillar construction should strictly seriously, its verticality, spacing, bolt hole position should comply with the requirements, and other size is not in conformity with the requirement to rework immediately, and at the same time, should be strictly in accordance with JTJ074-94 norms for rework.
(3) wave beam, pillar of the component such as the packing and marking shall comply with the terms of GB6725. Purchase fence shall not be in bulk, and shall ensure that in the process of park fence www.jtwiremesh.com, transportation, stacking not make the product deformation and damage. Should be fixed and reliable during the process of transportation, prevent due to turbulence or collision damage to the coating makes the deformation of the components.
(4) when the purchase note wave beam high-strength splice bolts connection of packing and marking shall conform to the relevant provisions of GB/T1231.
5 guardrail construction operations should be careful, and may not damage the pavement under the buried cables, pipes and other facilities.

15, around 8 PM, in HaiMenShi minjiang river road

http://steelstructurewarehouse.blogspot.com/2013/09/15-around-8-pm-in-haimenshi-minjiang.html



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