带弹性支撑的膜结构找形分析(英文)

Form-Finding Analyses of Membrane Structures with Elastic Bars

针对一般的索膜结构找形时将与边界支撑相接处的索膜节点按固定节点来进行计算,没有考虑支撑结构在该节点的位移,使找形结果与实际有一定差异这一问题,在索膜结构的力密度法找形基础上,对找形过程中索膜结构与其边界支撑结构的相互作用问题进行了分析,并编制了相应的计算程序.最后通过2个算例证明了文中方法的可行性.

When applying the general methods for the form-finding of membrane structures, the connecting nodes between the membrane structure and the supporting structure are regarded as fixed nodes, and the displacements of the supporting structure at the connecting nodes are not taken into account, thus resulting in the difference between form-finding results and actual situations. To solve this problem, the interaction between the membrane structure and the supporting structure in the form-finding process is analyzed based on the Force Density Method. Corresponding software for the form-finding is then programmed. Finally, two examples are pre-sented to verify the feasibility of the proposed method.