建筑钢结构进展2024，Vol.26Issue(8)：51-59,9.DOI:10.13969/j.cnki.cn31-1893.2024.08.006
冲击荷载作用下Levy型索穹顶结构动力响应分析
Dynamic Response of Levy-Type Cable Dome Structures Under Impact Loads
摘要
Abstract
The finite element model of a Levy-type cable dome structure was established,and this model could provide the criteria for determining the rationality of finite element results.The impact failure criterion was proposed.The full analysis of dynamic response under a large number of impact conditions was conducted,and the failure distribution and failure modes of the members of the structure were given,which reveals the failure mechanism under vertical impact loads.Based on the analysis of impact failure mechanism and parameters,a set of anti-impact measures were proposed.The research results show that all impact conditions follow the impact criteria.Within the selected vertical impact load range,the failure modes of the Levy-type cable dome structure are divided into four types,which are slight structural damage,local level 1 structural failure,local level 2 structural failure,and overall structural damage.As the impact kinetic energy increases,the dynamic response mode of the structure gradually progresses from mode 1 to mode 2,then to mode 3,and finally to mode 4.The dynamic response mode of the structure is determined by the energy absorption value of the structure and the velocity difference between the two ends of the member.关键词
索穹顶结构/冲击荷载/动力响应/失效模式/失效机理Key words
cable dome structure/impact load/dynamic response/failure mode/failure mechanism分类
建筑与水利引用本文复制引用
高占远,朱佳静,薛素铎,阮冬..冲击荷载作用下Levy型索穹顶结构动力响应分析[J].建筑钢结构进展,2024,26(8):51-59,9.基金项目
天津市自然科学基金重点项目(20JCZDJC00850) （20JCZDJC00850）
