基于能量方法设计的K形偏心支撑钢框架近场地震倒塌性能评估  

Evaluation of near-field earthquake resistance behavior of K type steel eccentrically braced frame design based on energy method

作　　者：陈洁 顾强[1] CHEN Jie;GU Qiang(School of Civil engineering,SUST,Suzhou 215011,China)

机构地区：[1]苏州科技大学土木工程学院,江苏苏州215011

出　　处：《苏州科技大学学报（工程技术版）》2018年第2期8-14,22,共8页Journal of Suzhou University of Science and Technology（Engineering and Technology Edition）

基　　金：国家自然科学基金项目(51278320)

摘　　要：文献[1]基于最大有效滞回耗能谱,根据能量平衡关系,提出了近场地震下K形偏心支撑钢框架的性态设计方法,并设计了10层和15层两个结构,但其设计结果是否满足结构抗倒塌安全储备的基本要求,尚未进行研究。依据美国FEMAP695的结构抗地震倒塌性能评估体系,采用增量动力时程分析(IDA)法,对文献[1]的设计结果进行了倒塌富余度和易损性评估,验证其设计方法的可信性,为该设计方法的后续发展和推广应用提供了理论依据。Based on the maximum effect cyclic energy spectrum, Literature [1] proposed a performance-based seismic design method of the K type steel eccentrically braced frame under the near-field earthquake according to the energy balance equation. And ten-story and fifteen-story K type steel eccentrically braced frames were designed using the method above. But whether the design results meet the basic requirement of structure collapse resistant safety reserve, has not yet been studied. In this paper, on the basis of the seismic collapse assessment principle in FEMA P695, the incremental dynamic analysis（IDA） method was used to assess the collapse maximum ratio and structure fragility analysis of the design results in Literature [1], which is not only to verify the credibility of the design method, but also to provide a theoretical basis of the follow-up development and popu-larization and application.

关 键 词：K形偏心支撑钢框架 增量动力分析 倒塌富余度 结构易损性 性态抗震设计 

分 类 号：TU391[建筑科学—结构工程]