空间膜结构找形与荷载分析及其程序的编制  

Form-Finding and Loading Analysis of Spatial Membrane Structures and Development of Analyzing Program

作　　者：苏建华[1] 韩大建[1] 徐其功[1] 宋雄彬[1] 

机构地区：[1]华南理工大学建筑学院,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2005年第1期41-46,共6页Journal of South China University of Technology(Natural Science Edition)

基　　金：广州市科技攻关引导项目 (2 0 0 4z3-E0 35 1)

摘　　要：采用应力等效方法 ,将膜面离散成索网进行研究 .根据索网结构的特点 ,直接建立了自由节点的平衡方程 .再由平衡方程分别推导了应用于膜结构找形以及荷载分析的计算公式 ,并对等应力面以及褶皱等膜结构计算中的问题进行了讨论 .最后编制了膜结构找形及荷载分析程序 ,并通过算例证明了文中方法的可行性 .The membrane structure is first discreted into the cable-net structure according to the method of stress equivalence. Next, for a cable-net stru cture, nodal equilibrium equations of free nodes are directly established, accor ding to which formulas for the form-finding and loading analysis of the membran e structure are individually derived. Then, the isostress surface assumption and wrinkle problem of the membrane structure are discussed. A program for the form -finding and loading analysis of the membrane structure are finally developed. Some examples verify the feasibility of the proposed methods.

关 键 词：膜结构 找形 荷载分析 等应力面 褶皱 

分 类 号：TU33[建筑科学—结构工程]