| 大跨度斜拉桥的随机地震响应分析 |
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| 引用本文： | 梅涛,肖盛燮.大跨度斜拉桥的随机地震响应分析[J].西华大学学报(自然科学版),2012,31(3):105-108. |
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| 作者姓名： | 梅涛 肖盛燮 |
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| 作者单位： | 重庆交通大学土木建筑学院,重庆,400074 |
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| 基金项目： | 国家自然科学基金，重庆市国土局项目 |
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| 摘 要： | 基于经典结构动力学公式推导出位移时程反应方程,采用有限元软件Ansys建立某斜拉桥空间有限元模型,分析其在地震作用下的位移响应。结果表明:在多维随机地震激励下,竖向激励使桥梁纵向位移明显减小,但对竖向位移没有影响,斜拉桥设计时需要考虑多维地震激励下的响应。
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| 关 键 词： | 斜拉桥 多维激励 地震响应 时程分析 |
Seismic Response Analysis of Long - span Cable - stayed Bridge under Random Excitation |
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| MEI Tao
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XIAO Sheng-xie.Seismic Response Analysis of Long - span Cable - stayed Bridge under Random Excitation[J].Journal of Xihua University:Natural Science Edition,2012,31(3):105-108. |
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| Authors: | MEI Tao XIAO Sheng-xie |
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| Affiliation: | School of Civil Engieering and Architecture,Chongqing Jiaotong University,Chongqin 400074 China |
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| Abstract: | In this paper,the authors develop displacement time-history response equation based on the classical structural dynamic formula.A 3D finite element model for a cable-stayed bridge is constructed to analyze the dispalacement respone under seismic.The study shows the influence of vertical force on bridge longitudinal displacement is reduced obviously while it does not exist in vertical displacement under multi-component seismic excitation.Consequently,the influence of multi-component seismic excitation should be considered for the design of cable-stayed bridge. |
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| Keywords: | cable-stayed bridge mutli-component excitation seismic respone time-history analysis |
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