Abstract: In this paper, based on the theory of wavelet singularity and artificial colony algorithm, combining the advantages of wavelet and artificial colony algorithm, a two-stage structure damage identification method based on wavelet artificial colony algorithm is proposed, and the problem of suspension bridge structure damage identification is studied. Through finite element modeling of suspension bridge structure, curvature mode was obtained by Lanczos method, and then the curvature mode was transformed by continuous wavelet transform to obtain the wavelet coefficient graph, where the maximum value of the modulus in the wavelet coefficient graph was the damage location of the structure. On the basis of damage location, constructing objective function based on the structural frequency and modal mode. The artificial bee algorithm have advantages of heuristic search strategy, global optimization and local search to identify the damage degree of suspension bridge structure. Through the numerical simulation analysis of a suspension bridge structure, the results show that the method can accurately and effectively identify the damage location and degree of the suspension bridge structure, and provide reference for the engineering application of the damage identification of the suspension bridge structure.Abstract: In this paper, based on the theory of wavelet singularity and artificial colony algorithm, combining the advantages of wavelet and artificial colony algorithm, a two-stage structure damage identification method based on wavelet artificial colony algorithm is proposed, and the problem of suspension bridge structure damage identification is studied. ...Show More
