若干结构参数对索膜结构的褶皱影响分析  

Analysis of the Parameters Affected the Wrinkles of the Cable and Membrane Structures During Loading

作　　者：苏建华[1] 韩大建[2] 徐其功[3] 郑华彬[3] 

机构地区：[1]广州市建筑科学研究院 [2]华南理工大学土木工程系,广州510640 [3]广东省建筑科学研究院,广州510500

出　　处：《特种结构》2006年第2期11-14,共4页Special Structures

基　　金：广州市科技攻关引导项目(No.2004z3-E0351)

摘　　要：采用刚度等效的方法,将膜结构等代成经纬向的索网结构进行荷载分析。根据空间索元几何非性有限元的U．L．列式法,编制了索膜结构的荷载分析程序。通过算例,讨论了荷载分析中,膜的初始应力边索预张力、矢跨比、膜材张拉刚度和经纬向应力比等结构参数的不同取值对膜结构褶皱的影响。In this paper, the membrane structure is discreted into cable-net structure according to stiffness equivalence. Then programming based on the updated Lagrange formula is compiled to solve the loading analysis problem of the membrane strctures . Finally some examples are presented and how the structure parameters, such as membrane＇ s initial stresses, boundary cable forces, ratio of vector height and span, material＇ s tension stiffness and membrane stresses ratio in warp and weft directions affect the membrane structures in discussed.

关 键 词：索膜结构 刚度等效 荷载分析 结构参数 褶皱 

分 类 号：TU399[建筑科学—结构工程]