The Damage Identification of Bridges Based on Structural Deflection and Wavelet Transform
Wavelet transform can characterize the local features of the signal in the time domain and frequency domain, enlarges and identifies the mutation signal of the structural response at different scales as a new signal analysis tools. In this paper, based on the structural deflection curve, propose a wavelet-based method to identify the beam structural damage. Use wavelet function to decompose the deflection curve of the structure after injury. Determine the existence of damage by the change and distribution of wavelet transform coefficients, determine the damage location, and simulate a cantilever bridge to verify this method.
Hui Li, Yan Feng Liu, Ming Guo, Rui Zhang and Jing Du
Y. H. Xue and H. Q. Liu, "The Damage Identification of Bridges Based on Structural Deflection and Wavelet Transform", Advanced Materials Research, Vols. 374-377, pp. 2533-2537, 2012