气肋式充气膜结构合理拱轴线研究  

Research on optimal arch axis of air rib inflatable membrane structure

作　　者：王乾旭 赵金龙 任王军 陈务军[1] 张伟锋 WANG Qianxu;ZHAO Jinlong;REN Wangjun;CHEN Wujun;ZHANG Weifeng(Space Structure Research Center,Shanghai Jiaotong University;Defense Engineering Institute,AMS,PLA;State Key Laboratory of Target Vulnerability Assessment,Defense Engineering Institute,AMS,PLA)

机构地区：[1]上海交通大学空间结构研究中心 [2]军事科学院国防工程研究院 [3]军事科学院国防工程研究院目标易损性评估全国重点实验室

出　　处：《防护工程》2024年第3期39-44,共6页Protective Engineering

摘　　要：随着空间结构的兴起和发展,出现了越来越多的气肋式膜结构建筑。为更进一步设计和优化气肋式充气膜结构,研究了其拱轴线形式,利用Abaqus有限元软件进行数值模拟,分析不同内压、不同高度气肋及不同荷载工况作用时,不同形式拱轴线的气肋式膜结构的变形情况,结果表明:在相同竖向气肋高度下,雪荷载作用下抛物线拱为最佳形式;风荷载作用下悬链线拱气肋为最佳形式;随着竖向气肋高度的增加,3种形式气肋的结构位移均逐渐增大,半圆形拱气肋受其影响变形变化幅度最大,故工程上应尽量选择抛物线拱气肋与悬链线拱气肋。With the emerge and development of spatial structures,more and more inflatable membrane structure buildings can be seen.In order to further optimize the design of inflatable membrane structure,this paper investigated its arch axis forms,and,based on Abaqus finite element software for numerical simulation,analyzed the deformation of inflatable membrane structure with different arch axis form under different internal pressures,heights of air ribs and load conditions.The results show that:under the same vertical air rib height,the best form is the parabolic arch under snow load alone;the best form is catenary arch ribs when wind loads are applied alone;as the height of the vertical air ribs increases,the structural displacement of the three forms of air ribs gradually increases;and semi-circular arch air ribs have greatest deformation change under these effects.Therefore,in terms of engineering,parabolic arch air ribs and catenary arch air ribs should be selected as much as practical.

关 键 词：气肋式膜结构 有限元分析 合理拱轴线 

分 类 号：TU38[建筑科学—结构工程]