Application of Wireless Monitoring System for the Ambient Vibration Study of the WuYuan Steel Arch Bridge

摘要：

In this paper,the academic wireless monitoring system with smart sensing units developed at Stanford University and Michigan University is applied for the ambient vibration study of a steel arch bridge in Xiamen,China.Ambient acceleration responses of the bridge measured by the wireless sensing units are compared with those collected by a traditional wire-based data acquisition system.Clock synchronization performed by the wireless sensing network based on a centralized beacon signal is assessed.The local signal processing capacity of the smart sensors is also validated.Due to the low cost and easy installation advantages of the wireless sensing system,it is applied to the identification of modal properties of the bridge.Ambient acceleration responses of the bridge acquired by the wireless sensing units are used to identify the modal properties of the bridge based on the advanced stochastic subspace identification(SSI)method.It is shown that the ambient vibration data collected by the wireless monitoring system are accurate and these data can be applied to identify the dynamic properties of the bridge.

关键词： wireless sensing health monitoring ambient vibration modal properties

作者: Y. Lei W.A. Shen Y. Song J. P. Lynch

作者单位: Department of Civil Engineering,Xiamen University,Xiamen,China Department of Civil and Environmental Engineering,University of Michigan,Ann Arbor,MI,U.S.A.

会议类型: 国际会议

会议名称: The World Forum on Smart Materials and Smart Structures Technology(SMSST07)(2007年世界智能材料与智能结构技术论坛)

会议地点: 重庆·南京

会议语种:英文

在线出版日期: 2007-05-01（万方平台首次上网日期，不代表论文的发表时间）