Steel structures have strong seismic resistance

       According to the seismic resistance level from low to high, it can be divided into several situations. The civil structure of rural residential buildings is the worst during earthquakes, with 90% collapsing in the Wenchuan earthquake; The second is a brick and stone structure, with 6 to 10 floors. Due to the large size and strong brittleness of the bricks; The third is the bottom frame structure. As a bottom frame structure, for commercial outlets, a large brick and concrete structure with more than 2 floors is prone to collapse after earthquakes due to the different hardness of these two materials, which are top heavy and bottom light.

　　Strong earthquakes occur in frame structures of public buildings with more than 10 floors; Even better is the frame shear wall structure, and even better is the pure shear wall structure. There is a steel structure that is powerful and widely used in passenger terminals, as well as in earthquake prone countries such as Japan. It has good elasticity and can absorb the destructive force of earthquakes, but the cost is high.

　　At present, most high-rise buildings with more than 30 floors are frame shear wall structures. During the Wenchuan earthquake, the building structure was not very good, but its performance was very good. It is reported that shear walls are reinforced concrete structures with high stiffness and strong ability to withstand horizontal seismic forces. So don't look at the height of the building, focus on the key to the building structure