|
|||||
|
|
| 运营状态下杨浦大桥模态试验与状态评估方法研究 | |
| 引用本文： | 王俊,郑军华,陈策.运营状态下杨浦大桥模态试验与状态评估方法研究[J].公路交通科技,2009,26(7). |
| 作者姓名： | 王俊 郑军华 陈策 |
| 作者单位： | 1. 南京工业大学土木学院,江苏,南京,210009 2. 上海浦江桥隧大桥管理公司,上海,210017 3. 江苏省长江公路大桥建设指挥部,江苏,南京,225321 |
| 基金项目： | 江苏省变通科学研究计划项目，江苏省博士后基金 |
| 摘 要： | 利用频域一空间域分解法,建立桥梁运行模态识别方法.该方法对桥梁在实际运行状态下车辆激励的响应测量数据进行无偏功率谱估计;然后采用奇异值分解技术,将随机响应数据空间分解成信号和噪声2个子空间,得出模态指示函数;并利用空间模态滤波技术分离出单一模态,准确识别出桥梁结构的模态参数.通过对杨浦大桥进行动力试验,测试桥梁在环境激励下的振动信息,采用该方法分析得到桥梁结构的动力参数,并与有限元计算结果相对比,有效实现了对桥梁结构整体状态和工作性能的评估. |
| 关 键 词： | 桥梁工程 杨浦大桥 模态识别 频域-空间域分解 |
Research on Operational Modal Test and Condition Assessment for Yangpu Bridge |
|
| WANG Jun,ZHENG Junhua,CHEN Ce.Research on Operational Modal Test and Condition Assessment for Yangpu Bridge[J].Journal of Highway and Transportation Research and Development,2009,26(7). | |
| Authors: | WANG Jun ZHENG Junhua CHEN Ce |
| Institution: | 1.School of Civil Engineering;Nanjing University of Technology;Nanjing Jiangsu 210009;China;2.Shanghai Huangpu River Bridge and Tunnel Management Company;Shanghai 210017;3.Jiangsu Yangtze River Road Bridge Construction Headquarters;Nanjing Jiangsu 225321;China |
| Abstract: | Operational modal analysis method of bridge was built based on frequency domain and spatial domain decomposition.Responding signal excited by traveling vehicles was utilized to analyze unbiased power spectrum.Then singular value decomposition was adopted to separate the signal space from the noise space to obtain the modal indicator function.Single mode was then separated by spatial modal filtering technology,and bridge modal parameters were discerned.Dynamic loading test of Yangpu Bridge was carried out to... |
| Keywords: | bridge engineering Yangpu bridge modal identification frequency domain and spatial domain decomposition |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |