基于性能的框架结构抗震安全评估方法研究

阐述了基于性能的地震反应静力非线性分析方法(Pushover法)的原理及实施步骤;利用结构有限元分析软件ETABS分别采用地震反应谱法、底部剪力法、Pushover法和动力时程分析法对一10层钢筋砼框架结构进行了抗震评估分析。结果表明Pushover法在整体层面和构件层面都能对结构的抗震性能做出很好的评估,对与算例类似的中底层结构是一种可靠实用的建筑结构抗震安全评估方法。

Research on Performance-based Seismic Evaluation Method of RC Frame Structures

The principle and actualizing steps of nonlinear static procedure for performance-based seismic response(Pushover method) are expatiated,and it is applied to a example of 10 story RC frame structure.The results are compared with those from earthquake response spectrum method,equivalent base shear method and time history method.Its main calculation procedures are summarized by software of ETABS.It is shown that Pushover method can meet different ductility demands of existing structures which are similar to the example in performance-based seismic evaluation.