At present, my country's housing is still dominated by brick concrete structure and reinforced concrete frame structure, and my country's steel structure building industrial system has just started. With the development of residential industrialization, many advantages of light steel structure houses have provided a stage for light steel structure houses.

1. Light self-weight, good seismic performance, steel has ductility, can consume energy from earthquake relatively well, so it has good seismic performance and high structural safety. The material has good homogeneity and isotropy, and is an ideal elastomer, which is most consistent with the basic assumptions of general engineering mechanics; light steel structure has light weight, building floors of the same construction area, and light steel structure residential space utilization rate is high.

In terms of space utilization. The cross-section of the steel structure is small, which can increase the effective area of ​​the building by about 8% compared with the reinforced concrete structure. The steel structure architectural style is also more flexible and rich. The indoor space can be divided into multiple schemes to meet the needs of different users.

2. The construction is convenient and the construction period is short. The steel structure members can be implemented in factory and installed on site. Due to the small amount of on-site operations, there is less pollution to the surrounding environment, and at the same time, the degree of construction mechanization is high, which accelerates the construction speed. According to statistics, for buildings of the same area, the steel structure can be shortened by 1/3 compared with the concrete structure, and the formwork materials can be saved.

3. The comprehensive cost is low, the weight is low, the basic cost is reduced, the overall materials are reduced, the direct cost is reduced, the construction period is short, and the indirect cost can be reduced, so the comprehensive cost is low.

4. The sustainable development of light steel structure has a high degree of industrialization, suitable for mass production in factories, integrating advanced products such as energy saving, waterproofing, heat insulation, doors and windows, etc., in a complete set of applications, integrating design, production and construction, and improving residential industrialization s level. The steel can be recycled after being scrapped. The steel structure is a green building, which is a new type of building that adapts to our human sustainable development strategy.

However, there are currently some deficiencies in steel structure residences:

Although the steel structure residence has many advantages, but my country is in the early stage of development, there are still many problems to be solved.

In terms of seismic performance, the pure steel structure is not suitable for high-rise residential buildings. Due to the same bearing capacity, its cross-section is relatively small, the stiffness is reduced, and it will bring instability and high requirements for floors and supports.

Light steel structure houses have certain requirements for architectural design, pipeline layout, etc. Once the room type and construction shape are determined, they cannot be modified and repaired like traditional houses. Fire resistance and corrosion resistance are poor. Due to the imperfect thermal insulation and high temperature system, the cost is higher than that of concrete houses.

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