建筑结构学报2017，Vol.38Issue(4)：28-34,7.DOI:10.14006/j.jzjgxb.2017.04.004
考虑悬链线效应的钢筋混凝土框架结构抗连续倒塌能力分析
Progressive collapse capacity analysis of reinforced concrete frame structures considering catenary action
摘要
Abstract
The effects of catenary action on reinforced concrete (RC) frame structures to resist progressive collapse were investigated.An OpenSees-based macro-model considering the catenary action was developed.The macro-model was validated by comparing the simulated results with the test results of two RC beam-column substructures,which were subjected to the loss of a middle column scenario.Moreover,the effects of catenary action on the response of a ten-story RC frame structure to resist progressive collapse were examined by both nonlinear static and nonlinear dynamic analyses from the alternative path method.The results show that if ignoring the catenary action,the progressive collapse capacity of RC frame structures will be underestimated.When the catenary action is not considered,the calculated maximum load increase factor for the frame subjected to the loss of the middle column of the first story is less than 2.0,while it is beyond 2.0 with considering the catenary action.关键词
钢筋混凝土框架/悬链线效应/宏模型/备用荷载路径法/抗连续倒塌能力Key words
RC frame structure/catenary action/macro-model/alternative path method/progressive collapse capacity分类
建筑与水利引用本文复制引用
于晓辉,钱凯,吕大刚..考虑悬链线效应的钢筋混凝土框架结构抗连续倒塌能力分析[J].建筑结构学报,2017,38(4):28-34,7.基金项目
国家自然科学基金项目(51378162,51178150),中国博士后科学基金面上项目(2014M551251),黑龙江省博士后面上项目(LBH-Z14114). （51378162,51178150）
