RC平面及空间框架抗倒塌能力OpenSees对比分析  

Comparative analysis of plane and space RC frame structure collapse resistance based on OpenSees

作　　者：余琼[1] 朱帅[1] 刘葵[1] 许建立[2] 

机构地区：[1]同济大学结构工程与防灾研究所,上海200092 [2]上海建筑设计研究院有限公司,上海200041

出　　处：《四川建筑科学研究》2015年第2期73-78,共6页Sichuan Building Science

摘　　要：对已有平面及空间框架抗倒塌试验进行了OpenSees非线性静力抗倒塌数值模拟与验证。在此基础上设计了一个6层钢筋混凝土空间框架,进行一榀横向、一榀纵向平面框架和该空间框架非线性静力Pushdown分析,考察不同抽柱工况下平面与空间框架倒塌抗力关系。试验及数值模拟表明,空间框架倒塌抗力均高于平面框架。数值模拟还表明,空间框架结构抗力小于对应纵、横向平面框架结构抗力之和。The plane and spatial framework anti-collapse experiments were verified by OpenSees nonlinear static anti-collapse numerical simulation. Then a six-story reinforced concrete space frame was designed, a transverse plane frame, a longitudinal plane frame and the space frame were analyzed by nonlinear static pushdown. And frame collapse resistance on plane and space are investigated under different removed columns working conditions. Experiment and numerical simulation indicated that the space frame collapse resistance is higher than the plane frame. Numerical simulation also showed that the space frame structural resistance is less than the sum of corresponding transverse and longitudinal plane frame structural resistance.

关 键 词：冗余度 悬索作用 协同转动法 倒塌抗力 

分 类 号：TU375[建筑科学—结构工程]