一、前言地震使建筑物产生了横向惯性力,引起建筑物来回摆动,其振幅与地震施加给建筑物的能量成比例。假如大部份能量能在建筑物运动过程中耗散,则将大大提高建筑物的抗震性能。通常,抗震设计都是依赖于主体结构构件的延性(即构件在弯曲、扭转等作用下产生塑 I. INTRODUCTION Earthquakes cause buildings to generate lateral inertial forces that cause the building to oscillate back and forth. Its amplitude is proportional to the energy that the earthquake exerts on the building. If most of the energy can be dissipated during the movement of the building, the seismic performance of the building will be greatly improved. In general, seismic design is dependent on the ductility of the main structural members (ie, the members are plastic under bending, twisting, etc.