考虑与弹性支承相互作用的膜结构找形分析  

FORM-FINDING ANALYSIS OF MEMBRANE STRUCTURES WITH ELASTIC SUPPORTS

作　　者：苏建华[1] 韩大建[1] 徐其功[1] 

机构地区：[1]华南理工大学土木工程系,广州510640

出　　处：《工业建筑》2006年第2期75-78,共4页Industrial Construction

基　　金：广州市科技攻关引导项目(项目编号:2004z3-E0351)。

摘　　要：在膜结构找形设计中,常把边界支承处的膜节点按固定节点处理,即不考虑支承结构在该节点处的位移。事实上,膜结构的支承节点往往属于弹性支承。在膜结构力密度法找形的基础上,考虑了找形过程中膜结构与其支承结构的相互作用。通过算例,证明了该法的可行性,并讨论了支承结构刚度对找形的影响,得到一些规律性的结论。In general methods of form-finding for cable and membrane structures, the connecting nodes between the tension structure and the supporting structure are regarded as fixed nodes. Displacement of these nodes on the supporting structure is not considered, In fact, the supports nodes should be regarded as elastic supports. ＂file interaction between the tension structure and the elastic supports is considered in form-finding process, Finally, several examples are presented. Effects of the support stiffness on the form-finding results are discussed. Some helpful conclusions are given.

关 键 词：弹性支承 膜结构 找形 相互作用 

分 类 号：TU383[建筑科学—结构工程]