Which steel factory is used for the bird's nest steel structure?

At present, it is revealed that it is Q460 high strength steel from Wuyang Iron and Steel Plant in Henan Province.

The National Stadium "Bird's Nest", the main stadium of the Olympic Games, has a designed steel consumption of 42,000 tons, which is one of the projects with the largest steel consumption, the largest scale and particularly difficult construction at home and abroad. Especially at the column foot of the bird's nest structure, the quality of materials and welding directly affects the safety of the whole project.

Li Jiulin, executive chief engineer of the National Stadium Project General Contracting Department of Beijing Urban Construction Group, told the reporter that in order to effectively support the overall structure, high-strength Q460 steel was used in the design. But this kind of steel has been imported from abroad before and has never been used in the domestic construction field. However, if it is imported, it is not only expensive, but also has a long procurement cycle, which cannot guarantee the normal progress of the project.

As a result, the engineers and researchers of Wuyang Special Steel Plant in Henan made joint efforts, and finally propped up the iron bars of the "Bird's Nest" with Q460 made in China.

According to reports, the total investment of the National Stadium after optimization and adjustment is about 310.3 billion yuan, which is about 400 million yuan less than the original budget cost of 3.5 billion yuan. In the optimization scheme of "Bird's Nest", 80,000 official seats remain unchanged, and 20,000 temporary seats are reduced to 1. 1.000.

According to Tan, general manager of the National Stadium Project General Contracting Department, there are twenty or thirty technical problems in the "Bird's Nest" project, and the steel structure of the "Bird's Nest" is unique in the world. "

According to Tan, the whole national stadium project needs 654.38 million tons of steel, all of which are provided by domestic steel mills. Steel consumption has been implemented at present, and there are certain preferential prices. Among them, the "Bird's Nest" part is made of 42,000 tons of steel, and a high-strength steel named Q460 will be used here, which has been provided by Wuyang Iron and Steel Plant in Henan Province.