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| 斜拉索风雨振响应特性 | |
| 引用本文： | 胡建华,王修勇,陈政清,倪一清,高赞明. 斜拉索风雨振响应特性[J]. 中国公路学报, 2006, 19(3): 41-48 |
| 作者姓名： | 胡建华 王修勇 陈政清 倪一清 高赞明 |
| 作者单位： | 1. 湖南大学,土木工程学院,湖南,长沙,410082;湖南省交通规划勘察设计院,湖南,长沙,410008 2. 湖南科技大学,土木工程学院,湖南,湘潭,411201 3. 湖南大学,土木工程学院,湖南,长沙,410082 4. 香港理工大学,土木及结构工程系,香港 |
| 基金项目： | 中国科学院资助项目;湖南省教育厅重点研究项目 |
| 摘 要： | 为了研究斜拉桥拉索风雨振的机理及响应特征,在岳阳洞庭湖大桥建立了由风速仪、雨量计、加速度传感器组成的风雨振现场观测系统,观测到了多次拉索风雨振现象;得到了发生拉索风雨振时风速、风向及雨量的基本条件,分析了风雨振时拉索振动的幅值、主振频率、模态参与特性及空气动力负阻尼比等响应特征。结果显示拉索风雨振很少为单模态振动,大多表现为主振模态和多阶模态参与的振动。 |
| 关 键 词： | 桥梁工程 斜拉索 现场观测 风雨振 响应特征 |
| 文章编号： | 1001-7372（2006）03-0041-08 |
| 收稿时间： | 2005-08-03 |
| 修稿时间： | 2005-08-03 |
Response Characteristics of Wind-Rain Induced Vibration of Stay Cables |
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| HU Jian-hua,WANG Xiu-yong,CHEN Zheng-qing,NI Yi-qing,GAO Zan-ming. Response Characteristics of Wind-Rain Induced Vibration of Stay Cables[J]. China Journal of Highway and Transport, 2006, 19(3): 41-48 | |
| Authors: | HU Jian-hua WANG Xiu-yong CHEN Zheng-qing NI Yi-qing GAO Zan-ming |
| Affiliation: | 1. School of Civil Engineering, Hunan University, Changsha 410082, Hunan, China; 2. Communications Planning, Survey and Design Institute of Hunan Province, Changsha 410008, Hunan, China; 3. School of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, Hunan, China; 4. Department of Civil and Structural Engineering, The Hong Kong Polytechnic University, Hong Kong, China |
| Abstract: | In order to investigate the excitation mechanism and response characteristics of wind-rain induced vibration of stay cable,an instrumentation system of wind-rain induced vibration measurement,which consists of anemometer,rain gauge and accelerometer,was installed on the Dongting Lake Bridge,Yueyang,China.Many events of wind-rain induced vibration on stay cable were recorded.The preliminary characteristics of wind-rain induced vibrations,such as mode displacement amplitude,modal participation,aerodynamic negative damping and so on,were presented.The results show that the minority of the responses is nearly a single mode response and the majority of the responses is the participation of the dominant mode and multi-mode responses during wind-rain induced vibration. |
| Keywords: | bridge engineering stay cable field measurement wind-rain induced vibration response characteristic |
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