Why steel buildings have the best seismic performance?
The plastic deformation of steel is strong, it can consume seismic energy, and there is still good resistance when plastic deformation occurs.
Steel material of isotropic, homogeneous, flexible, able to withstand seismic moment repeatedly without brittle failure; loss of stability time is obvious, is conducive to escape;
1, under the same size, the steel structure has a lighter weight, and the seismic energy received in the earthquake is smaller;2, steel structure has very good ductility, each member of the moment deformation is easy to coordinate;
The steel structure has good ductility, energy consumption can be offset by seismic wave. Steel is basically isotropic material, tensile, compressive and shear strength is very high, but also has good ductility, especially the steel structure, with its own unique high ductility, reducing the seismic response. Steel structure can be regarded as an ideal elastic-plastic structure. It can absorb and consume seismic input energy through plastic deformation of structure, so it has higher resistance to strong earthquake. Compared with other structures, the steel structure is light in weight, which greatly reduces the effect of the earthquake. In addition to the high seismic performance, the construction cycle is short and industrialization
