实际索膜工程的找形分析,不仅要得到稳定的结构形态,还要得到合适的索的预张力分布。基于非线性有限元找形理论,提出适时考虑索找力的索膜结构找形方法。首先根据是否考虑及何时考虑索找力,分3种情况对一个小品膜结构进行找形分析,发现只有适时考虑索找力的找形方法可以得到形态稳定、索张力分布合理的结构形态。然后采用新方法对大型索膜结构“佛山世纪莲花”体育场屋盖结构进行分析,发现新方法可以快速有效地对大型索膜工程进行找形和找力分析。 The actual shape of membrane project analysis, not only to get a stable structure, but also to get the appropriate pre-tension cable distribution. Based on the nonlinear finite element shape finding theory, a method of finding the shape of the cable membrane structure is put forward in consideration of the cable-seeking force. First of all, based on whether or not to consider and when looking for a search force, we find the shape of a sketch structure in three ways and find that only the shape-finding method that takes shape and stability and the cable tension distribution into account can be obtained only when it is timely considered. Then, a new method was used to analyze the roof structure of the large cable membrane structure “Foshan Century Lotus” Stadium. The results showed that the new method could quickly and effectively find the shape and force of large cable membrane project.