| 斜拉-悬索组合桥结构参数对自振特性的影响分析 |
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| 引用本文： | 刘金平,舒春生.斜拉-悬索组合桥结构参数对自振特性的影响分析[J].城市道桥与防洪,2009(6). |
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| 作者姓名： | 刘金平 舒春生 |
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| 作者单位： | 甘肃省交通规划勘察设计院有限责任公司,甘肃兰州,730030 |
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| 摘 要： | 该文以甘肃省文县伐子坝桥为工程背景,引入只受拉三维拉索单元,采用考虑几何非线性的子空间迭代法进行了模态分析,给出了斜拉-悬索组合桥自振特性的分析结果,并重点讨论了垂跨比、恒载集度、加劲梁刚度、主缆和斜拉索刚度等结构参数变化对该桥自振特性的影响,为斜拉-悬索组合桥结构设计理论提供了动力性能方面的参考。
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| 关 键 词： | 斜拉-悬索组合桥 自振特性 子空间迭代法 结构参数 几何非线性 |
Analysis on Influence of Structure Parameters of Cable-stayed and Suspension Composite Bridge on Self-vibration Characteristics |
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| Liu Jinping,Shu Chunsheng.Analysis on Influence of Structure Parameters of Cable-stayed and Suspension Composite Bridge on Self-vibration Characteristics[J].Urban Roads Bridges & Flood Control,2009(6). |
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| Authors: | Liu Jinping Shu Chunsheng |
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| Abstract: | Taking Faziba Bridge in Wen County,Gansu Province as the engineering background,the article uses the geometrical nonlinearity of the subspace iteration method to carry out the mode analysis by introducing in 3-D tension cable unit only.The article gives the analysis result of the self-vibration characteristic of cable-stayed and suspension composite bridge,and focuses discussion on the influence of the structural parameter variety of ratio of rise to span,the dead load intensity, the stiffening girder rigid... |
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| Keywords: | cable-stayed and suspension composite bridge self-vibration characteristic subspace iteration method structure parameter geometrical nonlinearity |
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