ETFE气囊膜形态、结构特性与材料性能试验  

ETFE Air Cushion Membrane Configurations,Structural Performances and Material Properties Experiments

作　　者：陈务军[1] 唐雅芳[2] 任小强[1] 董石麟[1] 

机构地区：[1]上海交通大学空间结构研究中心,上海200030 [2]上海市建筑科学研究院,上海200031

出　　处：《建筑科学与工程学报》2007年第3期13-18,共6页Journal of Architecture and Civil Engineering

基　　金：国家高技术研究发展计划("八六三"计划)项目(2006AA705211)

摘　　要：进行了聚偏四氟乙烯(ETFE)薄膜单向拉伸和反复荷载试验,分析了应力-应变曲线、滞回环曲线特征;根据受约束条件的力密度法找形分析方法,建立了充气膜设计分析理论,并介绍了EasyVol充气膜分析方法;通过数值算例分析,研究了ETFE气囊膜基本形态(菱形、六边形、矩形、圆形)、矢高、气压、初应力等对找形分析的影响及相互作用;进行了气囊膜在风压、风升作用下的荷载特性分析以及结构特性参数分析。该研究对ETFE气囊膜设计具有重要参考价值。Firstly, uni-tension and cycle loading tests were carried out for ETFE film. The stress and strain curve and cycling curve were analyzed thoroughly. The results indicate that ETFE is super elastic and elastic-plastic. According to form finding method formulated from force density subjected to volume constraints, design analysis procedure was developed for pneumatic structure, and specialized EasyVol was introduced for air cushion membrane analysis. Through series numerical analysis, parametric effects on equilibrium form and inter discipline were investigated for various plan form （rhombus, hexagon, rectangular, circle）, such as rise, rise-tospan, differential pressure, initial prestress. Finally, structural performance analysis was performed for cushion applied wind pressure and suction, as well as parametric effects investigation. The presented works are valuable to design of ETFE air cushion membrane.

关 键 词：ETFE薄膜 气囊膜 力学性能试验 结构形态 

分 类 号：TU502.6[建筑科学—建筑技术科学]