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.
付春雨;单德山;李乔. 列车行驶时桥梁结构损伤预警的时域方法[J]. , 2011, 30(1): 27-32.
FU Chunyu;SHAN Deshan;LI Qiao. The time domain method for bridge structural damage alarming when the train is running. , 2011, 30(1): 27-32.
2011, Vol. 30 
