结构静力弹塑性分析(push-over)方法的改进

A Study on Improvement of Push-over Analysis

静力弹塑性分析方法作为结构抗震性能的评估方法，近来受到广大学者的关注。本文采用动 力时程分析和静力弹塑性分析法，对结构响应（顶点位移、层间位移以及底部剪力）进行对比分析， 从而提出了对静力弹塑性分析法的水平荷载模式和结构目标位移的改进方法。从对比结果可以发 现，这种改进对评估结构的抗震性能是必要的。

Lately, the static push-over analysis, POA, has been becoming popular as a simplified computer method for evaluating seismic performances of structures. In this paper, the structural responses, such as the top displacement, story drift and base shear are compared between dynamic time history analysis and POA. From the comparison, it has been found that the improvement of lateral load pattern and target displacement of structure is necessary for estimating structural seismic performance by use of the POA.