为了保证地震区建筑物水平方向的刚度和稳定,建筑物一般都设有专门构件(比如柱间斜支撑)。非地震区的建筑一般情况下也都设有这种支撑。但没有考虑结构塑性状况时的作用。实际表明,发生地震时建筑结构承受实际地震荷载比计算的大得多。在水平地震力作用下支撑的受拉杆件产生残余伸长。当 In order to ensure the horizontal stiffness and stability of buildings in earthquake areas, buildings are generally equipped with special components (such as diagonal support between columns). Buildings in non-seismic areas generally have such support. However, the effect of structural plasticity was not considered. It is actually shown that the actual seismic load of the building structure subjected to the earthquake is much greater than that calculated by the actual earthquake load. The tensile members supported by the horizontal seismic force generate residual elongation. when