复合式索穹顶结构连续倒塌分析  

Progressive collapse analysis of composite cable dome structure

作　　者：张微敬[1] 苏岩杰 于敬海[2] ZHANG Weijing;SU Yanjie;YU Jinghai(College of Architecture and Civil Engineering,Beijing University of Technology,Beijing 100124,China;Architectural Design and Research Institute of Tianjin University,Tianjin 300073,China)

机构地区：[1]北京工业大学建筑工程学院,北京100124 [2]天津大学建筑设计研究院,天津300073

出　　处：《建筑结构》2023年第3期97-102,115,共7页Building Structure

基　　金：国家自然科学基金面上项目(51178009)。

摘　　要：基于拆除构件法,以一个长轴为102m的索穹顶体育馆为工程背景,对外圈为Levy式、内圈为Geiger式的索穹顶进行了考虑节点等代建模的连续倒塌非线性动力分析,研究单根索破断对杆件内力及节点位移的影响,摸清复合式索穹顶结构的关键构件及结构的抗倒塌能力。仿真结果表明:内、外圈交界处的中环索为复合式索穹顶的关键构件;复合式索穹顶结构具有较好的抗倒塌性能,单根索破坏不会引起结构整体倒塌。Based on the alternate path method, a cable dome with a long axis of 102m was taken as the engineering background, the progressive collapse nonlinear dynamic analysis of the cable dome with outer ring of Levy type and inner ring of Geiger type was carried out considering node equal generation modeling. The influence of single cable breaking on the internal force and joint displacement was studied, and the key components of the composite cable dome structure and the collapse resistance of the structure were found out. The simulation results show that the intermediate ring cable at the junction of inner and outer rings is the key component of the composite cable dome. The composite cable dome structure has better anti-collapse performance and the failure of single cable will not cause the whole structure to collapse.

关 键 词：复合式索穹顶结构 连续倒塌 拆除构件法 仿真分析 等代节点 

分 类 号：TU394.02[建筑科学—结构工程]