膜结构是 20 世纪中期发展起来的一种新颖的建筑结构形式 经过几十年的发展膜结构以其自重轻造型优美等优点已逐渐成 为机场体育场馆等大跨度建筑的主要结构形式之一 2002 年世界 杯的 20 个体育场馆中有 11 个是采用膜结构膜结构发展与建筑膜 材的发展和改进是密不可分的用于膜结构的建筑膜材除了要满足 力学性能和耐久性方面外尚需要符合必要的防水性耐火性自 洁性和便于制作安装等方面的要求 目前国际上通用的建筑织物膜材有三类 A 类玻璃纤维织物 基布涂敷聚四氟乙烯 PTFE B 类玻璃纤维织物基布涂敷聚氯 乙烯 PVC C 类聚酯织物涂敷聚氯乙烯 PVC A 类膜材具 有优异的建筑性能和结构受力性能但加工制作以及安装技术难度 大造价高 B 类膜材的柔韧性比 A 类改善但自洁性降低 C 类 膜材具有优异的受力性能较好的建筑性能制作安装技术难度较 低 A 类膜材是大型永久性建筑的主要用材现在国内应用较少 C 类是目前国内主要应用膜材因此本文以 C 类膜材研究对象 膜结构缝合接点形式将影响膜裁剪放样制作熔接工艺以 3 上海交通大学硕士研究生论文
Experiment researches on the performances of the welded seam of the membrane structure
Membrane structure was a newly-developed structure form in the middle of 20th century. After dozens of years of development, it has been one of the main structure forms used in airports, stadiums or other long-span structures due to its advantages such as lightweight and graceful shape. Of all the 20 stadiums used in the 2002 FIFA world cup, 11 were built in membrane structure forms. The development of membrane structure is closely related to the development and improvement of construction membrane material. The material used in membrane structure must not only meet the requirements on mechanical performance and durability, but also satisfy the necessary requests on processing property such as water-proof fire-proof self-cleaning and easy fitting . At present, there are three kinds of worldwide-used construction 5 上海交通大学硕士研究生论文