建筑结构学报2013，Vol.34Issue(4)：15-22,8.
地震作用下钢筋混凝土框架结构连续倒塌极限状态可靠度分析
Reliability analysis of progressive collapse limit state of reinforced concrete frame structure under earthquakes
摘要
Abstract
In this paper, the total probability framework of progressive collapse was applied to reliability analysis of progressive collapse of structures under strong earthquakes. The most probable failure members of RC frame structures under strong motions were identified by component reliability method. Two new methods, i. e. , the random pushdown method based on an improved point estimate method, and the random vertical incremental dynamic method, were both used for probabilistic global progressive capacity analysis and parameter sensitivity analysis. A global reliability method was used to calculate the conditional probability of progressive collapse of the damaged structures. On the basis of system reliability theory and total probability theorem, the combined failure probability, which incorporates both vertical progressive collapse with the consideration of seismic hazard and lateral incremental collapse, was obtained. It is shown by the results that the RC frames designed according to the current Chinese codes have adequate progressive collapse resistance.关键词
RC框架结构/连续倒塌极限状态/最可能失效构件/随机Pushdown方法/随机竖向IDA方法/连续倒塌易损性Key words
RC frame structure/ progressive collapse limit state/ the most probable failure members/ random Pushdown method/ random vertical IDA method/ fragility of progressive collapse分类
建筑与水利引用本文复制引用
宋鹏彦,吕大刚,崔双双..地震作用下钢筋混凝土框架结构连续倒塌极限状态可靠度分析[J].建筑结构学报,2013,34(4):15-22,8.基金项目
国家自然科学基金项目(51178150,50978080,90715021),土木工程防灾国家重点实验室开放课题基金项目(SLDRCE12-MB-04),教育部高等学校博士学科点专项科研基金项目(20112302110005). （51178150,50978080,90715021）
