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[1]丁 阳,葛金刚,李忠献.空间网格结构连续倒塌分析的瞬时移除构件法[J].天津大学学报(自然科学版),2011,(06):471-476.
 DING Yang,GE Jin-gang,LI Zhong-xian.Instantaneous Component-Removing Method for Analysis of Progressive Collapse of Space Grid Structure[J].Journal of Tianjin University,2011,(06):471-476.
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空间网格结构连续倒塌分析的瞬时移除构件法()
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《天津大学学报(自然科学版)》[ISSN:0493-2137/CN:12-1127/N]

卷:
期数:
2011年06
页码:
471-476
栏目:
建筑工程
出版日期:
2011-06-15

文章信息/Info

Title:
Instantaneous Component-Removing Method for Analysis of Progressive Collapse of Space Grid Structure
作者:
丁 阳12葛金刚1李忠献12
1. 天津大学建筑工程学院,天津 300072;
2. 滨海土木工程结构与安全教育部重点实验室(天津大学),天津 300072
Author(s):
DING Yang12GE Jin-gang1LI Zhong-xian12
1. School of Civil Engineering,Tianjin University,Tianjin 300072,China;
2. Key Laboratory of Coast Civil Engineering Structure Safety(Tianjin University),Ministry of Education,Tianjin 300072,China
关键词:
连续倒塌移除构件损伤累积杆件失稳
Keywords:
progressive collapsecomponent-removingcumulative damagemember instability
分类号:
TU356
文献标志码:
A
摘要:
用于连续倒塌分析的多传递路径法忽略了构件失效的成因、机理和对剩余结构的动力效应,且需假定构件失效位置,不适用于杆件众多的空间网格结构.以损伤累积作为构件失效判别准则,考虑材料非线性和几何非线性,提出实时删除失效构件的瞬时移除构件法.采用动力非线性分析,对比双杆模型和悬臂梁节点位移,验证瞬时移除构件法的正确性.考虑杆件失稳和损伤累积对地震作用下单层柱面网壳进行连续倒塌分析,结果表明,瞬时移除构件法简单有效,可应用于空间网格结构连续倒塌分析.
Abstract:
Since alternate path method applied to progressive collapse neglected the cause and mechanism of component
failure and structural dynamic effect caused by component failure,and needed to assume the position of component
failure,it was not suitable for space grid structure with many members. Based on the cumulative damage as the
criterion of component failure,instantaneous component-removing method considering geometric nonlinearity and
material nonlinearity was proposed to remove disabled component. Dynamic nonlinearity analysis was applied to double
members and cantilever,and the node displacements were compared to certify the correctness of instantaneous
component-removing method. Considering cumulative damage and instability of member, progressive collapse of single-layer latticed cylindrical shell in an earthquake was analyzed. The analysis results indicate that instantaneous
component-removing method is simple and useful,and can be used in the analysis of progressive collapse of space
grid structure.

备注/Memo

备注/Memo:
通讯作者:丁 阳,dingyang@tju.edu.cn.
更新日期/Last Update: 2011-06-15