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Structural Damage Assessment Based on Model Updating and Neural Network  

Cho, Hyo-Nam (한양대학교 토목.환경공학과)
Choi, Young-Min (한양대학교 토목.환경공학과)
Lee, Sung-Chil (한양대학교 토목.환경공학과)
Lee, Kwang-Min (한양대학교 토목.환경공학과)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.7, no.4, 2003 , pp. 121-128 More about this Journal
Abstract
In recent years, various artificial neural network algorithms are used in the damage assessment of civil infrastructures. So far, many researchers have used the artificial neural network as a pattern classifier for the structural damage assessment but, in this paper, the neural network is used as a structural reanalysis tool not as a pattern classifier. For the model updating using the optimization algorithm, the summation of the absolute differences in the structural vibration modes between undamaged structures and damaged ones is considered as an objective function. The stiffness of structural components are treated as unknown parameters to be determined. The structural damage detection is achieved using model updating based on the optimization techniques which determine the estimated stiffness of components minimizing the objective function. For the verification of the proposed damage identification algorithm, it is numerically applied to a simply supported bridge model.
Keywords
Structural Damage Assessment; Artificial Neural Network; Optimization;
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