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. For the general structure of the cable membrane to find the shape of the membrane will be connected with the boundary support at the membrane node by a fixed node to calculate, without considering the displacement of the support structure at the node, the result of the shape-finding and the actual difference between this issue, Based on the force density method for finding the shape of the cable membrane structure, the interaction between the cable membrane structure and the boundary support structure in the process of finding the shape is analyzed, and the corresponding calculation program is compiled.Finally, Feasibility of the method.