PVDF涂层织物膜材和节点高温力学性能试验研究  

Experiments on the mechanical properties of PVDF coated fabric and joints under high temperature

作　　者：赵飞龙[1] 陈务军[1] 何艳丽[1] 宋浩 

机构地区：[1]上海交通大学空间结构研究中心,上海200240 [2]上海太阳膜结构有限公司,上海200030

出　　处：《空间结构》2014年第3期42-47,共6页Spatial Structures

基　　金：国家自然科学基金项目(51278299)

摘　　要：对PVDF涂层聚酯纤维建筑织物膜材和节点进行了一系列单调单向拉伸试验,包括常温(23℃)和高温(70℃)下母材、高温(70℃)下40mm和75mm宽搭接焊缝节点以及膜边铝合金型材节点,对其破坏形式、强度和变形力学特性进行了分析.介绍了具体的试件制作、实验仪器和试验方法.结合规程提出了温度对于材料的影响系数以及高温(70℃)下焊缝的最小宽度,对膜结构工程设计应用具有参考价值.A series of mono-uni-tensile tests have been carried out for the PVDF coated polyester fiber woven fabric, including the mother material under 23℃ and 70℃, 40mm and 75mm width welded overlap seam under 70℃, and edge fastener detail under 70℃. The broken phenomena, strength and deformation behavior were investigated thoroughly respectively. The specimen manufactures, experimental apparatus, testing procedures are also described accordingly herein. Due to high temperature effects, the influence factor is proposed from the membrane design specification, and the minimum welded seam width is also proposed under 70℃. The presented work is valuable to practical membrane structural engineering design.

关 键 词：高温试验 PVDF涂层织物膜材 搭接焊缝 膜边节点 

分 类 号：TU383[建筑科学—结构工程]