考虑与弹性支承相互作用的膜结构找形分析

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基金项目:

广州市科技攻关引导项目(项目编号:2004z3-E0351)。

FORM- FINDING ANALYSIS OF MEMBRANE STRUCTURES WITH ELASTIC SUPPORTS

1.
Department of Civil Engineering,South China University of Technology Guangzhou 510640

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。
- 弹性支承 /
- 膜结构 /
- 找形 /
- 相互作用
Abstract: 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. The 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.
- elastic supports /
- membrane structures /
- form-finding /
- interation