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| 适时考虑索找力的索膜结构找形方法 | |
| 引用本文： | 赵冉,王小平,魏德敏,孙文波. 适时考虑索找力的索膜结构找形方法[J]. 工业建筑, 2013, 43(1): 118-120,130 |
| 作者姓名： | 赵冉 王小平 魏德敏 孙文波 |
| 作者单位： | 1. 中交四航工程研究院有限公司,广州,510230 2. 中交四航局港湾工程设计院有限公司,广州,510230 3. 华南理工大学亚热带建筑科学国家重点实验室,广州,510640 4. 华南理工大学建筑设计研究院,广州,510640 |
| 基金项目： | 广东省自然科学基金项目(020940) |
| 摘 要： | 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。 |
| 关 键 词： | 索膜结构 非线性有限元法 找形分析 找力分析 |
FORM-FINDING METHOD OF CABLE-MEMBRANE STRUCTURES CONSIDERING CABLE FORCE-FINDING FROM APPROPRIATE MOMENT |
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| Zhao Ran,Wang Xiaoping,Wei Demin,Sun Wenbo. FORM-FINDING METHOD OF CABLE-MEMBRANE STRUCTURES CONSIDERING CABLE FORCE-FINDING FROM APPROPRIATE MOMENT[J]. Industrial Construction, 2013, 43(1): 118-120,130 | |
| Authors: | Zhao Ran Wang Xiaoping Wei Demin Sun Wenbo |
| Affiliation: | 1.CCCC Fourth Harbor Engineering Institute Co Ltd,Guangzhou 510230,China; 2.Engineering Design Institute Co Ltd of CCCC Fourth Harbor Engineering Co Ltd,Guangzhou 510230,China; 3.State Key Laboratory of Subtropical Building Science,South China University of Technology,Guangzhou 510640,China; 4.Architectural Design and Research Institute of SCUT,Guangzhou 510640,China) |
| Abstract: | Form-finding analysis of actual cable-membrane projects,does not only aim to find stable shapes,but also to find suitable cable pretension distribution.Based on the nonlinear finite element method pattern theory,it was proposed a method considering cable force-finding from the appropriate moment in the process of form-finding analysis.According to whether and when to consider force-finding of cables in the process of form-finding,three form-finding cases were considered.From analytic results,only the method considering cable force-finding from the appropriate moment could get a stable shape and a proper cable pretension distribution.Using the new method,the roof of a large cable-membrane stadium named Foshan Century Lotus was analyzed.It was found that the method could be used for the analysis of shape-finding and force-finding of large cable-membrane structures rapidly and effectively. |
| Keywords: | cable-membrane structure nonlinear finite element method form-finding analysis force-finding analysis |
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