한국전산구조공학회:학술대회논문집 (Proceedings of the Computational Structural Engineering Institute Conference)
- 한국전산구조공학회 1995년도 봄 학술발표회 논문집
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- Pages.136-143
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- 1995
동특성 추정을 이용한 구조물의 손상도 추정
Damage Estimation of Structures Incorporating Structural Identification
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Yun, Chung-Bang
(Dept. of Civil Engineering, Korea Advanced Institute of Science and Technology) ;
- Lee, Hyeong-Jin (Dept. of Civil Engineering, Korea Advanced Institute of Science and Technology) ;
- Kim, Doo-Ki (Dept. of Civil Engineering, Korea Advanced Institute of Science and Technology)
- 발행 : 1995.04.01
초록
The problem of the structural identification becomes important, particularly with relation to the rapid increase of the number of the damaged or deteriorated structures, such as highway bridges, buildings, and industrial facilities. This paper summarizes the recent studies related to those problems by the present authors. The system identfication methods are generally classified as the time domain and the frequency domain methods. As time doamin methods, the sequential algorithms such as the extended Kalman filter and the sequential prediction error method are studied. Several techniques for improving the convergences are incorporated. As frequency domain methods, a new frequency response function estimator is introduced. For damage estimation of existing structures, the modal perturbation and the sensitivity matrix methods are studied. From the example analysis, it has been found that the combined utilization of the measurement data for the static response and the dynamic (modal) properties are very effictive for the damage estimation.
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