OPTICAL SENSOR PLACEMENT FOR VIBRATION MODEL TESTS OF CABLE-STAYED BRIDGE
Structural damage identification based on vibration modal analysis has broad application prospects in the field of bridge for health monitoring. Its effectiveness is based on accuracy of modal testing, while the sensors locations and the number of sensors have a decisive effect on testing results. This paper mainly studies two methods of optimal sensor placement which is widely used in civil engineering, effective independence method and cumulated method based on modal assurance criterion (MAC). Firstly, we establish the integral finite element model of Badong Changjiang Highway Bridge and do finite element analyses to get vertical displacement model data, and then study different optimal sensor placements in vibration modal testing of cable-stayed bridges by EFI and MAC. Though analyzing of the optimal result, the method introduced in this paper is reasonable and easy to realize. It not only can provide theory foundation but also can bring convenience and shortcut realizing method for vibration modal testing of cable-stayed bridges, which has feasibility and practicability.
Ming-Yuan Zhang Er-Lei Wang Zhe-An Lu Ji Wang
Hubei Key Laboratory of Roadway, Bridge and Structural Engineering, Wuhan University of Technology, Wuhan 430010, P.R. China
国际会议
长沙
英文
900-903
2007-11-19（万方平台首次上网日期，不代表论文的发表时间）