Nowadays, concrete structure and steel frame structure are the popular orientation of many building structures.Different types of buildings use different methods of seismic support. 

According to the national standard, the steel frame should be welded with the steel structure.

The key points of steel frame structure include long-span indoor space steel frame structure, low-rise light steel structure and steel frame structure of multi-storey and high-rise residential buildings. The common sports venues, exhibition centers and airport terminal buildings belong to the long-span spatial layout, which includes the structural characteristics of spherical grid, reticulated shell, truss structure, cable membrane structure, etc.Mobile housing is a low rise light steel structure; multi-storey and high-rise residential steel frame structure is the key to housing and public buildings. 

In China, many landmark buildings are all steel frame structures, such as the bird’s Nest stadium (Beijing bird’s Nest), Shanghai Grand Theater, 500 meter curved surface radio telescope, Beijing Daxing airport, etc.; abroad, many landmark buildings also use steel frame structure, such as the Eiffel Tower in Paris in Holland. It can be said that this kind of project presents the advantages of steel structure building. 

Advantages of steel structure building 

In fact, the relativity is relative to the concrete structure, and the main body of steel structure construction behavior is relatively light. Under the same seismic disaster effect of compressive strength, the bearing capacity of steel structure is smaller than that of cement concrete structure. Under the seismic disaster effect of design scheme, it can be considered to work in the ductility range.  

In the seismic grade area, the steel frame structure of prefabricated housing maintains the consistency of structural action under the effect of earthquake disaster, and maintains the structure from collapse under the effect of rare earthquake disaster.

Some steel structure buildings can also make good use of the skin effect, which makes it have the characteristics of small weight, strong deformation resistance and not easy to collapse.When the earthquake occurs, there will be left and right or up and down vibration, and the steel frame structure connected by standard parts will produce a stable small box shape, which is not easy to cause the shaking of the road surface to drop the concrete floor or collapse of the wall, which reasonably maintains the personal safety and capital safety.In addition, the high-quality durability of steel frame structure prefabricated residence is also reflected in the ductility of the engineering building, and the twisting area suffers from vibration deformation, which greatly reduces the damage of building structure suffering from earthquake disasters.Therefore, the application of light-weight steel structure with ductility can reduce the requirements on the bearing capacity of engineering buildings, that is to say, the ductility structure can resist earthquake disaster according to its deformation. 

Seismic grade of steel frame structure 

In spite of this, the steel frame structure can not maintain the mechanical and electrical engineering system software installed inside the engineering building from the beginning to the end, and the anti-seismic support must be used to ensure the construction safety.