Observed dynamic performance of the Yokohama‐Bay Bridge from system identification using seismic records
Observed dynamic performance of the Yokohama‐Bay Bridge from system identification using seismic records
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DOI：
10.1002/stc.135
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发表时间：
2006
影响因子：
5.4
通讯作者：
D. Siringoringo;Y. Fujino
中科院分区：
文献类型：
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作者：
D. Siringoringo;Y. Fujino
在地震事件期间从仪表化桥梁获取的强运动数据为深入了解桥梁的行为及其组件的性能提供了绝佳的机会。使用系统辨识，可以估计桥梁的模态参数，并可以研究不同级别地震期间的性能。在这项研究中，利用六次地震记录的地震响应来研究横滨湾大桥的动态行为。使用状态空间模型的系统实现来估计结构的模态参数。这里采用的实现方法是基于信息矩阵系统实现（SRIM），它利用地震输入和输出数据之间的相关性来识别状态空间模型的系数矩阵。六次地震的识别结果表明，系统识别可以通过估计模态参数来捕获桥梁的全局行为，也可以解释其构件的局部行为，例如地震期间连杆承载连接的性能。版权所有 © 2005 约翰·威利父子有限公司
Strong motion data acquired from instrumented bridges during seismic events provides an excellent opportunity to gain insight into the behaviour of bridges and performance of their components. Using system identification, modal parameters of bridges can be estimated and the performance during various level of earthquake can be studied. In this study dynamic behaviour of Yokohama‐Bay Bridge is investigated using seismic response recorded from six earthquakes. Modal parameters of the structure are estimated using system realization of state–space model. The realization method used here is based on the system realization using information matrix (SRIM), which makes use of the correlations between earthquake input and output data to identify the coefficient matrices of state–space model. Identification results from six earthquakes show that the system identification can be used to capture global behaviour of the bridge by estimating modal parameters and also to explain local behaviour of its component such as performance of link‐bearing connections during earthquake. Copyright © 2005 John Wiley & Sons, Ltd.