| 斜拉桥稳定性分析的主梁有限元模型探讨 |
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| 引用本文： | 黄智华,邓平跃,张大伟,张鹏.斜拉桥稳定性分析的主梁有限元模型探讨[J].重庆交通大学学报(自然科学版),2011,30(4):721-724,767. |
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| 作者姓名： | 黄智华 邓平跃 张大伟 张鹏 |
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| 作者单位： | 1. 上海浦东建筑设计研究院有限公司,上海,201204
2. 西南交通大学土木工程学院,四川成都,610031 |
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| 摘 要： | 对一座施工到最大双悬臂时的预应力混凝土斜拉桥进行稳定性有限元分析,该桥的主梁为双主肋式,通过选取不同的主梁有限元模型进行特征值屈曲计算,讨论了这些有限元模型对于主梁刚度的模拟的特点,指出了传统单主梁和双主梁模型的缺点.针对双主梁模型,提出了一种采用等效刚度模拟横向连接的方法,可简化计算.
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| 关 键 词： | 斜拉桥 稳定性 有限元模型 等效刚度 |
Finite Element Models of Main Girder in Cable-stayed Bridge Stability Analysis |
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| HUANG Zhi-hua,DENG Ping-yue,ZHANG Da-wei,ZHANG Peng.Finite Element Models of Main Girder in Cable-stayed Bridge Stability Analysis[J].Journal of Chongqing Jiaotong University,2011,30(4):721-724,767. |
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| Authors: | HUANG Zhi-hua DENG Ping-yue ZHANG Da-wei ZHANG Peng |
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| Institution: | 1.Shanghai Pudong Architectural Design & Research Institute Co.,Ltd.,Shanghai 201204,China; 2.School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,Sichuan,China) |
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| Abstract: | The stability of a prestressed concrete cable-stayed bridge was analyzed with FEM while the construction of the longest double cantilever finished.The girder of this bridge was double main rib.Different kinds of finite element model of the girder were selected in the eigenvalue buckling analysis.According to the results,the characteristics of these finite element models in simulation of the girder rigidity are discussed.The disadvantages of the traditional single-girder and double-girder models are pointed out.The method of using equivalent rigidity to simulate the lateral connection of double-girder model is also proposed.It is convenient. |
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| Keywords: | cable-stayed bridge stability finite element model equivalent rigidity |
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