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[1]唐 腾,周 浩,艾更知,等.整体张拉式钢索膜结构抗连续倒塌分析[J].建筑科学与工程学报,2018,35(05):160-169.
 TANG Teng,ZHOU Hao,AI Geng-zhi,et al.Analysis on Progressive Collapse Resistance of Integral Tensioned Steel-cable-membrane Structure[J].Journal of Architecture and Civil Engineering,2018,35(05):160-169.
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整体张拉式钢索膜结构抗连续倒塌分析(PDF)
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
35卷
期数:
2018年05期
页码:
160-169
栏目:
出版日期:
2018-09-03

文章信息/Info

Title:
Analysis on Progressive Collapse Resistance of Integral Tensioned Steel-cable-membrane Structure
作者:
唐 腾周 浩艾更知朱艳华王 磊蒋友宝张建仁
长沙理工大学土木工程学院
Author(s):
TANG Teng ZHOU Hao AI Geng-zhi ZHU Yan-hua WANG Lei JIANG You-bao ZHANG Jian-ren
School of Civil Engineering, Changsha University of Science & Technology
关键词:
整体张拉式钢索膜结构敏感性分析连续倒塌关键构件
Keywords:
integral tension steel-cable-membrane structure sensitivity analysis progressive collapse key member
分类号:
-
DOI:
-
文献标志码:
A
摘要:
以整体张拉式钢索膜结构为对象,考虑材料非线性与几何非线性,建立了相应的有限元分析模型。通过敏感性分析确定了钢结构系统与索系统的关键构件。采用考虑初始状态的等效瞬时加载法对该钢索膜结构体系进行结构抗连续倒塌能力分析。结果表明:对于索系统,两侧的背索是维持结构整体性能的关键构件;由于存在备用荷载路径,中间部位的索失效后,整体结构变形较小;钢结构系统中由于下部支承结构冗余度较高,无论单根桁架柱、斜撑柱或1对斜撑柱失效后结构响应均变化不大;桁架梁的跨中下弦杆与桅杆失效后会引发结构响应较大变化,可确定其为关键构件;中间榀桁架梁跨中下弦杆与下悬索的失效不会导致结构发生连续倒塌;两侧索结构由于缺乏备用荷载路径,背索与桅杆失效会导致结构局部破坏。
Abstract:
Taking the integral tensioned steel-cable-membrane structure as an example, the corresponding finite element analysis model was established by considering the material nonlinearity and geometrical nonlinearity. The key members of the steel structure system and the cable system were obtained through the sensitivity analysis method. The progressive collapse resistance of the steel-cable-membrane structure system was analyzed by adopting the equivalent instantaneous loading method with the initial state. The results show that for the cable system, the back cables on both sides are the key members to maintain the overall performance of the structure. After the failures of cables in the middle, the deformation of the whole structure is small due to the existence of the backup load path. Due to the high redundancy of the lower support structure in the steel structure system, no matter the single truss column, the inclined bracing column or a pair of inclined braces fails, the structural response changes a little. However, after the lower chords of the middle of truss girder and the mast fail, it will cause a large change in structural response, and thus they can be determined as key members. The failures of the lower chords of the middle intermediate truss girder and the lower suspension cables will not cause the progressive collapse of the structure. Due to the absence of the backup load path, the failure of the back cable and the mast will cause partial damage of the structure.

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更新日期/Last Update: 2018-09-03