Guangzhou Steel News: Steel construction engineering new technology - the use of high-strength steel technology
1. The main technical content
To bear a greater load of steel structure engineering, use of higher strength steel grade, can reduce the amount of steel and processing capacity, conserve resources and reduce costs. National standards for construction of high-strength low-alloy steel has Q295, Q345, Q390, Q420, Q460 five marks, for bridge construction steel has Q235q, Q345q, Q370q, Q420q four trademark, high-rise building construction steel have Q235GJ, Q345GJ, Q235GJZ, Q345GJZ four trademark. The current steel supply and engineering design is the use of more strength grades of steel Q345, Q390 rarely use more than higher strength grades of steel and also greatly improved use of space high-strength steel grade.
2. Technical Specifications
Availability steel varieties and specifications: rolled steel sheet thickness of 6 to 120 mm, width 1500 to 3600㎜ length of 6000 to 18000㎜; mechanical properties and chemical composition of high-strength low-alloy steel structure, see "Carbon Su construction steel and low alloy construction steel plates and strips "GB / 3274; high-rise building construction steel mechanical properties and chemical composition, see" high-rise building constructed with steel "YB4104; mechanical properties of steel and bridge construction chemical composition, see "construct steel bridges" GB / T714. When the use of high strength steels paid to the choice of welding materials and welding matching process, and after inspection procedure qualification.
3. Scope
Suitable for building a steel high-rise buildings, large public buildings, large bridges, friction steel piles, other bear a greater load of steel construction.
4. Typical projects have been used
National Stadium, National Aquatics Center, CCTV new site, New Poly Plaza, Guangzhou New TV Tower, the Famen Temple Dagoba like. Guangzhou Steel
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