| 索膜结构的二次找形法 |
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| 引用本文： | 蔡文琦,沈国辉,孙炳楠,毛国栋,翟林海. 索膜结构的二次找形法[J]. 空间结构, 2005, 11(4): 27-30 |
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| 作者姓名： | 蔡文琦 沈国辉 孙炳楠 毛国栋 翟林海 |
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| 作者单位： | 浙江大学建筑工程学院,浙江,杭州,310027;浙江省建筑设计研究院,浙江,杭州,310006;湖州市中兴建设开发公司,浙江,湖州,313000 |
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| 摘 要： | 本文首先分析索膜结构找形分析的几种主要方法,发现这些方法均没有考虑重力的影响,因此提出考虑重力作用的二次找形法,给出二次找形法的基本原理和计算框图,编制相应的程序,并通过两个算例来验证.算例分析发现,索膜结构在找形分析时,若考虑重力作用,膜面和索的曲率比未考虑重力时大,因此二次找形法获得的结果更接近实际的情况,同时该方法还具有收敛速度快、收敛性好的优点.
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| 关 键 词： | 索膜结构 找形 非线性有限元法 二次找形法 |
| 文章编号： | 1006-6578（2005）04-0027-04 |
| 收稿时间： | 2004-01-24 |
| 修稿时间： | 2004-01-24 |
The two-time method for form finding of cable-reinforced membrane structures |
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| CAI Wen-qi,SHEN Guo-hui,SUN Bing-nan,MAO Guo-dong,ZHAI Lin-hai. The two-time method for form finding of cable-reinforced membrane structures[J]. Spatial Structures, 2005, 11(4): 27-30 |
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| Authors: | CAI Wen-qi SHEN Guo-hui SUN Bing-nan MAO Guo-dong ZHAI Lin-hai |
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| Affiliation: | 1. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310027, China; 2. Zhejiang Architectural Design and Research Institute, Hangzhou 310006, China ; 3. Zhongxing Construction Corporation, Huzhou 313000, China |
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| Abstract: | The main methods for form finding of cable-reinforced membrane structures are first analyzed.As all these methods take no account of the gravity,the two-time method for form finding considering gravity is then proposed.The basic principle and calculation diagram of the two-time method are presented and the related computer program is developed.Two numerical examples demonstrate that the result of form finding is more reliable since the membrane and cable have lager curvature if gravity is considered.The present method therefore has better accuracy and efficiency in computation. |
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| Keywords: | cable-reinforced membrane structures form finding nonlinear FEM two-time method |
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