| 桥梁自振特性与承载能力分析 |
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| 引用本文： | 王岐峰,李炎,李万恒,刘文峰.桥梁自振特性与承载能力分析[J].公路交通科技,2005,22(11):93-95. |
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| 作者姓名： | 王岐峰 李炎 李万恒 刘文峰 |
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| 作者单位： | 1. 交通部公路科学研究所,北京,100088
2. 浙江杭州杭徽高速公路有限公司,浙江,杭州,310013 |
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| 摘 要： | 桥梁结构自振特性与结构承载能力有着内在联系;自振频率与桥跨刚度、结构挠度检验系数存在一定关系。通过结构响应模态振型振幅的比较,可以对结构横向联系使用状况进行损伤识别。通过实测桥梁结构阻尼比的变化,可以对结构边界条件、结构材料阻尼特性的改变进行分析判断。本文结合两座桥梁自振特性的跟踪测试,对桥梁自振特性和承载能力之间的关系进行分析。
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| 关 键 词： | 自振特性 模态分析 横向联系 自振频率 阻尼比 |
| 文章编号： | 1002-0268(2005)11-0093-03 |
| 收稿时间： | 2004-08-05 |
| 修稿时间： | 2004年8月5日 |
Vibration Characters and Bridge Load-bearing Capacity Analysis |
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| WANG Qi-feng,LI Yan,LI Wan-heng,LIU Wen-feng.Vibration Characters and Bridge Load-bearing Capacity Analysis[J].Journal of Highway and Transportation Research and Development,2005,22(11):93-95. |
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| Authors: | WANG Qi-feng LI Yan LI Wan-heng LIU Wen-feng |
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| Institution: | 1 .Research Institute of Highway, The Ministry of Communication, Beijing 100088, China; 2.Zhejiang Hangzhou-Anhui Expressway CO.LTD, Zhejiang Hangzhou 310013, China |
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| Abstract: | There are inherent relations between vibration parameter and carrying capacity of bridge structure.There is certain relation between eigenfrequency and bridge rigidity and displacement check coefficient.By analyzing the vibration mode land amplitude of the structure response,we can know the transverse beams' damages.Structural boundary status can be judged by the structure damping ratio change.The relation between bridge load-bearing capacity and damages is analyzed in the paper by tracking of the measurement. |
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| Keywords: | Vibration parameters Mode analysis Transverse beam Eigenfrequency Damping |
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