Pushover法与规范抗震评估方法对比研究

Comparative study of Pushover analysis and normal method in seismic evaluation

本研究采用Pushover法对2层框架结构在多遇地震和罕遇地震作用下的抗震性能进行评估,并与规范采用的底部剪力法、反应谱法、时程分析法的抗震分析结果进行比较。结果表明:Pushover法可以比较准确的评估框架结构的抗震性能,特别在评估罕遇地震作用时可以找到结构的薄弱环节,为结构抗震设计及加固提供理论参考。

The paper evaluates seismic performance of a two-layer frame structure under the effect of frequent earthquake and rare earthquake based on Pushover analysis,and makes comparison of Pushover analysis and the seismic analysis results of equivalent base shear method,response-spectrum method,time-history method.The result shows that Pushover analysis can accurately evaluate seismic performance of frame structure,especially can find the weak line of structure when evaluating the rare earthquake and provide a basis for seismic design of structure and strengthening.