The time domain method for bridge structural damage alarming when the train is running
FU Chunyu;SHAN Deshan;LI Qiao
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School of Civil Engineering, Southwest Jiao tong University, Chengdu 610031, China
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History+
Received
Revised
Published
2009-09-22
2009-10-15
2011-01-25
Issue Date
2011-01-25
Abstract
Based on the correlation between bridge’s damage state and train load when the train is running on railroad bridge, the time domain method for bridge structural damage alarming is put forward. Firstly, structural damage sensitivity is analyzed to find out the vulnerable sections in this method. Then right subdomains are selected from the time domain when the train is running on railroad bridge, owing to the damage state of the vulnerable sections. At last, by using the acceleration time domain data as damage index, support vector machine, one of pattern recognition methods, is used for damage alarming in every subdomain. A continuous girder is analyzed, and the results show that this method has a preferable capability of identification and noise resistance.
FU Chunyu;SHAN Deshan;LI Qiao.
The time domain method for bridge structural damage alarming when the train is running[J]. Journal of Vibration and Shock, 2011, 30(1): 27-32
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