| 三塔斜拉桥抗震性能非线性时程分析 |
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| 引用本文： | 王龙飞.三塔斜拉桥抗震性能非线性时程分析[J].武汉理工大学学报(交通科学与工程版),2011(4). |
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| 作者姓名： | 王龙飞 |
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| 作者单位： | 武汉理工大学道路桥梁与结构工程湖北省重点实验室; |
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| 摘 要： | 以正在建设的一座大跨径3塔结合梁斜拉桥为研究背景,建立空间动力有限元模型,对E1和E2水平的三向地震作用下结构地震反应进行了非线性时程分析,并研究了行波效应对结构地震反应的影响.结果表明:该桥在两阶段设防的地震反应符合相关抗震规范要求,具有较好的抗震性能;主塔地震反应中,弯矩与应力分布规律有不一致的现象;行波效应对3塔斜拉桥中塔纵向地震反应的影响很小,对边塔的影响较大,且相对一致激励为不利影响,其随视波速的增大而减小;行波效应对主塔横向地震反应影响很小.
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| 关 键 词： | 非线性 时程分析 地震反应 应力状况 行波效应 |
Nonlinear Time-history Analysis of Seismic Performance of Cable-stayed Bridge with Three Pylons |
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| Wang Longfei.Nonlinear Time-history Analysis of Seismic Performance of Cable-stayed Bridge with Three Pylons[J].journal of wuhan university of technology(transportation science&engineering),2011(4). |
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| Authors: | Wang Longfei |
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| Institution: | Wang Longfei(Hubei Key Laboratory of Roadway Bridge & Structure,WUT,Wuhan 430070,China) |
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| Abstract: | On the background of a long-span composite girder cable-stayed bridge with three pylons under construction for research,this paper establishes a three-dimensional dynamic finite element model,makes nonlinear time-history analysis of the structure under three dimensional E1 earthquakes and E2 earthquakes,and studies the effect of traveling wave on seismic responses of the whole bridge.The results show that the cable-stayed bridge has relatively good seismic performance because seismic responses of the struct... |
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| Keywords: | nonlinearity time-history analysis seismic response state of stress traveling wave effect |
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