结构地震反应分析的状态空间法

State Space Equation Method in the Seismic Response Analysis

介绍了平面杆系模型非线性地震反应分析技术,包括恢复力滞回模型的数值描述及刚度变化的处理,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,同时也提出了逐步积分过程中刚度变化的处理方法 并用本文方法对澜沧-耿马帅茶厂一幢三层四跨钢筋混凝土框架结构进行了计算 计算结果表明:运用本文计算方法进行结构地震反应的非线性分析计算,其计算结果比目前结构工程地震反应的非线性分析法精度高,计算精度可以满足工程要求

The analytic methods for nonlinear seismic response of planar frame model are discussed in this paper. The restoring force model and the treatment of stiffness change are described. The state space method is applied to the calculation of the structural elasticplastic seismic response using the numerical value integration. At last, a three floor, four spans concrete reinforce frame is calculated as an example by using the above method. The results show good accuracy and satisfy the tolerance for civil engineering requirements.