Proceedings of the Computational Structural Engineering Institute Conference (한국전산구조공학회:학술대회논문집)
- 2003.04a
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- Pages.382-387
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- 2003
Neural Networks-Based Damage Detection for Bridges Considering Errors in Baseline Finite Element Models
모델링 오차를 고려한 신경망 기법 기반 손상추정방법
- Lee, Jong-Jae (Dept. of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology) ;
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Yun, Chung-Bang
;
- Lee, Jong-Won ;
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Jung, Hie-Young
(Seoul city University)
- Published : 2003.04.01
Abstract
In this paper, a neural networks-based damage detection method using the modal properties is presented, which can effectively reduce the effect of the modeling errors in the baseline finite element model from which the training patterns for the networks are to be generated. The differences or the ratios of the mode shape components between before and after damage are used as the input to the neural networks in this method, since they are found to be less sensitive to the modeling errors than the mode shapes themselves. Results of laboratory test on a simply supported bridge model and field test on a bridge with multiple girders confirm the applicability of the present method.
Keywords