| 非线性变形效应对大跨自锚式斜拉-悬吊桥颤振的影响 |
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| 引用本文： | 张哲,韩立中,黄海新.非线性变形效应对大跨自锚式斜拉-悬吊桥颤振的影响[J].大连海事大学学报(自然科学版),2010(1). |
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| 作者姓名： | 张哲 韩立中 黄海新 |
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| 作者单位： | 大连理工大学桥梁工程研究所;河北工业大学土木工程学院; |
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| 基金项目： | 西部交通建设科技项目基金(200631882350) |
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| 摘 要： | 为分析由桥梁在风荷载作用下产生的变形而引起的结构动力特性以及空气力的非线性变化效应对大跨径自锚式斜拉-悬索桥颤振的影响,基于结构的变形后状态,充分考虑结构变形引起的非线性效应,建立大跨径桥梁颤振分析的三维非线性方法及其计算程序.结合大连湾跨海自锚式斜拉-悬索桥进行颤振分析,揭示结构变形产生的非线性效应对大跨径自锚式斜拉-悬吊桥颤振的影响程度和机理.分析结果表明,该方法是可行的,程序是可靠的.
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| 关 键 词： | 大跨自锚式斜拉-悬吊桥 颤振 结构变形 非线性分析 |
Effects of nonlinear deformation on flutter of long-span self-anchored cable-stayed suspension bridge |
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| ZHANG Zhe,HAN Li-zhong,HUANG Hai-xin.Effects of nonlinear deformation on flutter of long-span self-anchored cable-stayed suspension bridge[J].Journal of Dalian Maritime University,2010(1). |
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| Authors: | ZHANG Zhe HAN Li-zhong HUANG Hai-xin |
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| Institution: | 1.Institute of Bridge Engineering;Dalian University of Technology;Dalian 116023;China;2.Civil Engineering School;Hebei University of Technology;Tianjin 300000;China |
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| Abstract: | To analyze the flutter behaviors caused by the nonlinear variations of structural dynamic characteristics and aeroelastic forces acting on the long-span self-anchored cable-stayed suspension bridge under wind loading,an approach of three-dimensional nonlinear flutter analysis was developed based on the deformed bridge structures,in which the nonlinear effects of structural deformation were fully considered.Then numerical flutter analyses were performed on a Dalian Bay cross-sea self-anchored cable-stayed su... |
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| Keywords: | long-span self-anchored cable-stayed suspension bridges flutter structural deformation nonlinear analysis |
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