一种基于性能的抗震设计的Pushover分析方法  

A Pushover analysis for performance-based seismic design

作　　者：李沛豪[1] 刘崇奇 

机构地区：[1]浙江工业大学建筑工程学院,浙江杭州310014

出　　处：《浙江工业大学学报》2016年第5期538-542,579,共6页Journal of Zhejiang University of Technology

基　　金：国家自然科学基金资助项目(51008281)

摘　　要：论述了一种以顶层位移作为性能指标的弹塑性Pushover分析方法用于基于性能的抗震分析,并且编制了相应的Matlab程序.为验证分析方法的科学性和可靠性,用Pushover程序对双层单跨、双层双跨的两榀平面钢框架作计算分析,且与其试验数据进行对比.结果显示:分析结果与试验数据的荷载—位移曲线基本吻合,误差小于14%,表明Pushover分析方法和程序可靠.并以Pushover方法作为抗震性能的分析工具对一榀三层四跨框架做了抗震分析,显示了Pushover方法的适用性.An elasto-plastic Pushover analysis technique is presented for the performance-based seismic analysis by taking the top displacement as a performance index and a corresponding Matlab program is compiled.To validate the rationality and reliability of the technique,the program is used to analyze two plane steel frames：two-storey one-bay and two-storey two-bay,and the numerical results are compared with experimental data.It is shown that the computed load-displacement curve is in good agreement with experimental results with a relative error smaller than 14%.This indicates that the Pushover analysis technique and program are reliable.With the Pushover analysis as an analytical tool,the seismic analysis for a three-storey four-bay frame is made to show its applicability.

关 键 词：基于性能的抗震设计 PUSHOVER分析 钢框架 

分 类 号：TU311.1[建筑科学—结构工程]