- 摘 要
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(1 北京工業(yè)大學建筑工程學院, 北京 100124; 2 天津大學建筑設計研究院, 天津 300073)
摘要: 基于拆除構件法,以一個長軸為 102m 的索穹頂體育館為工程背景,對外圈為 Levy 式、內(nèi)圈為 Geiger 式的索穹頂進行了考慮節(jié)點等代建模的連續(xù)倒塌非線性動力分析,研究單根索破斷對桿件內(nèi)力及節(jié)點位移的影響,摸清復合式索穹頂結構的關鍵構件及結構的抗倒塌能力. 仿真結果表明:內(nèi)、外圈交界處的中環(huán)索為復合式索穹頂?shù)年P鍵構件;復合式索穹頂結構具有較好的抗倒塌性能,單根索破壞不會引起結構整體倒塌.
關鍵詞: 復合式索穹頂結構; 連續(xù)倒塌; 拆除構件法; 仿真分析; 等代節(jié)點
中圖分類號:TU394. 02 文獻標志碼:A 文章編號:1002-848X(2023)03-0097-06
DOI:10. 19701 / j. jzjg. 20212153
Progressive collapse analysis of composite cable dome structure
ZHANG Weijing1, SU Yanjie1, YU Jinghai2
(1 College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China;2 Architectural Design and Research Institute of Tianjin University, Tianjin 300073, China)
Abstract: Based on the alternate path method, a cable dome with a long axis of 102m was taken as the engineeringbackground, the progressive collapse nonlinear dynamic analysis of the cable dome with outer ring of Levy type and innerring of Geiger type was carried out considering node equal generation modeling. The influence of single cable breaking onthe internal force and joint displacement was studied, and the key components of the composite cable dome structure andthe collapse resistance of the structure were found out. The simulation results show that the intermediate ring cable at thejunction of inner and outer rings is the key component of the composite cable dome. The composite cable dome structure hasbetter anti-collapse performance and the failure of single cable will not cause the whole structure to collapse.
Keywords: composite cable dome structure; progressive collapse; alternate path method; simulation analysis;equivalent node
∗國家自然科學基金面上項目(51178009).
第一作者:張微敬,博士,教授,博士生導師,主要從事大跨空間結構研究,Email:zhangweijing@ bjut. edu. cn.
[引用本文] 張微敬,蘇巖杰,于敬海. 復合式索穹頂結構連續(xù)倒塌分析[ J]. 建筑結構,2023,53(3):97-102,115.ZHANG Weijing,SU Yanjie,Yu Jinghai. Progressive collapse analysis of composite cable dome structure[ J]. BuildingStructure,2023,53(3):97-102,115
