[提要]  在阐述了楼层恢复力滞回模型表达式的基础上，提出了通过数值积分来计算结构弹塑性地震反应的状态空间法，并与Wilson法的计算结果进行了对比。同时也提出了逐步积分过程中刚度变化的处理方法。
[关键词]  恢复力模型  地震反应  状态方程

On the basis of describing the expression formulas of restoring force model, this paper puts forward the state space method to calculate the structural elastic-plastic seismic response by using the numerical value integration, and checks the calculation results against that of Wilson method. At the same time, the disposal ways of stiffness variations are put forward in successlve integration process.
Keywords: restoring force model; seismic response; state equation