"A new building system can open up industry lines between construction, metallurgy, machinery and equipment manufacturing, new building materials and disaster prevention and mitigation industries, become a national strategic resource reserve, and integrate and innovate to become a strategic emerging industry. Steel structure housing is conducive to economic transformation and upgrading and sustainable development, and needs to be accelerated to cultivate and develop." This is the steel structure building system that was generally favored by the industry a few years ago.
The steel structure housing general system is used for civil housing and has unique advantages, including:First, light self-weight. Steel structure residential can reduce the building weight by about 30%25%, which is favorable for the construction of high-rise buildings, especially in places with low geological bearing capacity and high seismic intensity, and its comprehensive economic benefits are better than the general residential building system. Secondly, the layout is flexible, with large openings and rich room types, which can increase the floor area by 3%25% to 5%25%. Due to its full flexibility, modifiability and safety, it is conducive to meeting the living needs of modern people. Thirdly, it is easier to realize industrialization, stereotyping and mass production and improve the labor week structure.
Steel for steel structure is facing the new challenge of the rapid development of China's steel structure industry, and the increasing amount of steel used in steel structure has also accelerated the production and research and development of steel for steel structure. However, compared with developed countries, there are still many gaps:.
The proportion of high-performance steel used in steel structure needs to be improved. In addition to the advantages of light weight, high strength, excellent material properties, high industrialization of production and installation, suitable dismantling, good durability, etc., construction steel structure also has the characteristics of saving resources, reducing carbon emission and recycling. Therefore, the steel used in steel structure also needs to be light weight, high strength and corrosion resistant. However, at present, some steel structure projects are still "bulky, heavy, big" defects, need to use high-grade structural steel to change the status quo. For example, carbon structural steel (Q235) can be replaced by low alloy high strength structural steel, carbon structural steel can save 10% of the span.
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