The cost of steel structure residential building design is a major reason restricting its development.However, considering the whole life cycle of steel structure residential building and the total construction investment, the cost of steel structure residential building is not unacceptable.Compared with the traditional reinforced concrete structure, the space area of the steel structure component section is much smaller, which effectively increases the use area of the house.The steel structure can also greatly shorten the construction period and reduce the comprehensive cost.Moreover, the steel structure material can also be recycled.Steel structure is easy to be industrialized, it is easy to realize the standardization of design, the factory production of components and parts, and the assembly of construction machinery; it can achieve series development, intensive production and social supply; and it can improve work efficiency and ensure quality. 　　

 Steel structure residential building design is to take steel as the main structure of the building, which is usually made of various building components such as steel beams, steel columns, steel trusses, etc., which are made of profiled steel and steel plates. The components are assembled into a complete structural system by welding, bolts or rivets, and then constructed with new materials such as lightweight wallboard or energy-saving brick as peripheral walls.With the reform and opening up and the rapid development of social economy, China’s steel structure production has also achieved a qualitative leap, is continuing to write the legend of residential buildings in the new historical period.

 Case diagram of 3D steel structure building

 The development of steel structure residential building technology can promote the reform of building steel and steel industry development, and stimulate economic domestic demand.These advantages, combined with the development of new wall building materials of thermal insulation and waste utilization, can fully meet the requirements of “energy saving and land saving” and environmental protection buildings.Under the condition that clay brick is forbidden, the relevant standards and specifications of steel structure and residential building are complete. It is feasible and necessary to develop the design system of steel structure residential building, which has broad development prospects. 　　

 Energy saving: make full use of solar energy, adopt energy-saving building envelope and heating and air conditioning, reduce the use of heating and air conditioning.According to the principle of natural ventilation, the air cooling system is set up to make use of the dominant wind direction in summer effectively.The building adopts the plane form and overall layout adapted to the local climate conditions. 　　

 Saving resources: in the architectural design, construction and selection of building materials, the rational use and disposal of resources are considered.We should reduce the use of resources and strive to make them renewable.Save water resources, including greening water conservation. 　　

 Return to nature: the external environment of green buildings should be integrated with the surrounding environment, harmonious and consistent, dynamic and static complementary, so as to protect the natural ecological environment 　　

 Comfortable and healthy living environment: no harmful building materials and decoration materials are used inside the building.The indoor air is fresh and the temperature and humidity are appropriate, which makes the residents feel good and healthy. 　　

 The construction characteristics of green buildings include: there are clear requirements for the geographical conditions of buildings, there are no toxic and harmful substances in the soil, the ground temperature is appropriate, the groundwater is pure, and the geomagnetic field is moderate. 　　

 Green buildings should use natural materials as far as possible.The wood, bark, bamboo, stone, lime, paint, etc. used in the construction shall be inspected and treated to ensure that they are harmless to human body. 　　

 According to the conditions of natural hot water and renewable energy, we should make full use of natural hot water and renewable energy to generate electricity.　　

 With the global climate warming, the world’s attention to building energy efficiency is increasing.More and more people realize that the CO2 produced by building energy is the main source of climate warming.Energy saving building has become the inevitable trend of building development, and green building has emerged as the times require.