| 大跨度拱桥减震分析 |
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| 引用本文： | 张鑫,周志祥,宋雷.大跨度拱桥减震分析[J].重庆交通学院学报,2007,26(3):5-9,16. |
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| 作者姓名： | 张鑫 周志祥 宋雷 |
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| 作者单位： | 重庆交通大学 重庆400074(张鑫，周志祥)，四川省交通厅公路勘察规划设计院 四川成都610041(宋雷) |
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| 基金项目： | 国家自然科学基金项目(50578168) |
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| 摘 要： | 以西藏尼木大桥为研究对象,结合该桥型特点,采用大型通用软件对其进行了模态分析和动力计算.通过模拟地震响应得到该桥的反应特性,由此采用调谐质量控制器(TMD)对该桥进行受控分析.采用振型贡献率确定受控模态,在获取TMD系统的优化参数后将其模拟入有限元模型中,并最终通过时程分析验证了TMD运用于拱桥被动减震控制的有效性.
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| 关 键 词： | 地震反应特性 模态分析 参数优化 TMD 时程分析法 被动减震控制 |
| 文章编号： | 1001-716X（2007）03-0005-05 |
| 修稿时间： | 2006-04-132006-05-20 |
Analysis of Seismic Response of Long-span Arch Bridge |
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| ZHANG Xin, ZHOU Zhi-xiang, SONG Lei.Analysis of Seismic Response of Long-span Arch Bridge[J].Journal of Chongqing Jiaotong University,2007,26(3):5-9,16. |
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| Authors: | ZHANG Xin ZHOU Zhi-xiang SONG Lei |
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| Institution: | 1. Chongqing Jiaotong University, Chongqing 400074, China;2. Highway Planning Survey Design and Research Institute of Sichuan Province Communication Department, Sichuan Chengdu 610041 ,China |
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| Abstract: | Taking Tibetan Nimu bridge as an object,and using the finite element soft,a mode and dynamic analysis was given.By simulating the seismic responses,the characteristic of the bridge was acquired and the TMD system was applyed to control the seismic responses of the bridge.The main vibration mode was confirmed by the method of modal mass ratio.The optimal parameters of TMD,when attained,were simulated into the finite element modal.At last,the conclusion that fixing TMD in arch bridge is an effective passive vibration control method to reduce the seismic response of the structure,which is verified by the time-marching analysis result. |
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| Keywords: | seismic response mode analyse parameter optimization TMD time-marching analysis passive vibration control |
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