倒伞式可展索膜结构静力特性分析  

THE ANALYSIS OF STATIC MECHANICAL PROPERTIES OF DEPLOYABLE UPSIDE-DOWN UMBRELLA MEMBRANE STRUCTURES

作　　者：殷志祥[1] 孙芳锦[1] 

机构地区：[1]辽宁工程技术大学,辽宁阜新123000

出　　处：《工程力学》2006年第7期160-164,共5页Engineering Mechanics

基　　金：辽宁省教育厅基金(202183391)

摘　　要：倒伞式可展索膜结构是一种新型的张拉式索膜结构,它不同于现有的固定式索膜结构,具有样式新颖,结构灵活,使用方便,用途十分广阔等特点。对倒伞式可展索膜结构的静力分析原理进行了理论推导。结合算例,对该结构的静力性能做了详细的分析。对结构在恒载、预张力、风荷载和雪荷载作用下的反应进行了数值模拟,研究了倒伞式可展索膜结构在荷载作用下应力及位移的变化规律,并找出了它与现有的固定式索膜结构相比所独有的特点和优势,得出了一些适用于倒伞式可展索膜结构的主要结论。The deployable upside-down umbrella membrane structure is a new tensioned cable-membrane structure. It is different from the existing fixed cable-membrane structure. It has the characteristics of novel style, flexibility and convenience. Static analysis principle of deployable upside-down umbrella membrane structures was investigated using nonlinear finite element method. With an example, the static mechanical properties of this type of structure are analyzed. Numerical simulation was conducted on the response of the structure under constant, pre-stress, wind and snow loadings. Rules such as how stress and displacement change under loadings are analyzed. The characteristics and advantages of the structure are obtained compared with the available fixed membrane structures. In the end, conclusions about deployable upside-down umbrella membrane structure under loads are given.

关 键 词：结构工程 倒伞式可展索膜结构 非线性有限元法 静力特性 单元褶皱 

分 类 号：TU318[建筑科学—结构工程]