Steel structure is the main load-bearing structure system of residence, and cold-formed thin-walled steel structure system is mainly used in low-density residence. Wall column and gypsum board are used, and C-grid and lightweight board are used on the ground. For multi-storey residence with steel frame structure system, concrete floor slab and prefabricated light slab or light block should be adopted for the wall. The other direction of multi-storey steel structure residence is to adopt steel plate shear wall or ordinary steel mixed light steel structure; For high-rise residence, it is a mixed structure composed of steel frame and concrete tube or a frame structure supported by strip steel.
2. Technical indicators
For the low-rise cold-formed thin-walled steel residential system, the total steel consumption is 22 ~ 25 kg/m2, and the bay size is 3.3 ~ 4.8 m; The steel consumption of multi-storey steel frame residence system is 35 ~ 40kg/m2, and the steel consumption of high-rise steel frame mixed structure or steel frame system with bay size of 3.3 ~ 4.5m is about 50 kg/m2, and the opening size is 3.3 ~ 7.2m. ..
3. Scope of application
Cold-formed thin-walled steel can be widely used in low-rise residential buildings (1 ~ 3 floors); Steel frame structure can be widely used in the construction of multi-storey houses (4 ~ 7 floors); Steel-concrete mixed structure or frame structure supported by strip steel can be applied to the construction of high-rise residential buildings (9-24 floors). The construction of steel structure residence should aim at industrialization, do a good job of wallboard support, and do a good job of popularizing steel structure residence on the basis of pilot projects.
4. Typical projects that have been applied
Wuhan Century Home High-rise Residential Project, Dujiangyan Happy Home Yiyuan Steel Structure Residential Quarter, Beijing Gina Apartment, etc.
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