Review on Bridge Structural Damage Identification Techniques Based on Bridge-vehicle Coupled Vibration Analysis

When the vehicle passes through the bridge,the dynamic responses of the bridge and dynamic responses of the vehicle can be used for modal parameter identification and damage detection of the bridge because they contain the modal or structural parameter information.Based on the latest researches at home and abroad,the bridge structural damage identification techniques based on bridge-vehicle coupled vibration analysis are summarized and compared with the traditional methods.Meanwhile,their advantages and disadvantages are investigated.The working principles of 5 methods(namely,the method based on sensitivity analysis and model modification,the method based on stiffness searching,the method using Fourier analysis of the vehicle dynamic response for frequency identification of the bridge,the method using the wavelet analysis of bridge dynamic response for extracting the modal parameters of the bridge,the method using the dynamic response of the vehicle and bridge for damage identification of the bridge) are introduced in detail.The procedures and the strategies in practical application of these methods are summarized.At last,the key problems and the further research directions in this area are pointed out.