在役钢筋混凝土框架结构抗震性能评估  

Seismic performance evaluation of existing reinforced concrete frame structures

作　　者：陈健云[1] 温瑞智[2] 王宝峰[1] 

机构地区：[1]大连理工大学土木工程学院,辽宁大连116024 [2]中国地震局工程力学研究所,黑龙江哈尔滨150080

出　　处：《大连理工大学学报》2011年第2期230-235,共6页Journal of Dalian University of Technology

基　　金：国家自然科学基金资助项目(50978043);地震行业科研专项资助项目(200808026);教育部新世纪人才计划资助项目(NCET-06-0270)

摘　　要：对在役结构进行了易损性分析.考虑后续使用期往往小于实际基准期的事实,依据等超越概率原则给出不同后续使用期内地震作用参数的具体取值.首先分析了场地土对地震动参数的影响,在此基础上又考虑了抗力的随机时变性,然后利用调整后的地震动参数对在役建筑物进行基于概率Pushover分析的结构易损性分析,得出结构在不同的地震作用下,结构失效概率随着后续使用年限的减少而增加的结论.The seismic vulnerability of existing structures was studied.Considering the fact that the residual life is usually shorter than the reference period,the parameters of earthquake action at various re-service term are given based on the equal exceeding probability principle.Firstly,the impact of different soil conditions on ground motion parameters was analyzed,and the stochastic time-dependent characteristics of resistance were taken into consideration,then the seismic ground motion parameters were adjusted.Furthermore,using these parameters the seismic vulnerability analysis of existing structures was done based on the probability Pushover analysis.The results show that the failure probability of structures increases with the decrease of residual life.

关 键 词：在役钢筋混凝土框架结构 地震动参数 概率Pushover分析 抗力概率密度函数 失效概率 

分 类 号：TU391[建筑科学—结构工程]