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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Structural Engineering and Mechanics, An Int'l Journal Structural Engineering and Mechanics, An Int'l Journal Vol.79 No.6
- 발행연도
- 2021.9
- 수록면
- 699 - 709 (11page)
이용수
초록· 키워드
오류제보하기
It is necessary to identify structures with unknown mass and unknown seismic excitations simultaneously, but very limited methods have been proposed. In this paper, an algorithm is proposed to identify structural element mass, stiffness, and seismic excitations using only partial absolute structural responses of chain-like systems. In the first stage, the identification of structural element stiffness-mass coupled coefficients and unknown seismic excitations is conducted based on the generalized extended Kalman filter with unknown input (GEKF-UI) developed by the authors. In the second stage, these coupled coefficients are decoupled by cluster analysis and the least squares estimation (LSE) to obtain structural element stiffness and mass changes. The effectiveness of the proposed algorithm is numerically investigated using a four-story frame structure under three scenarios of changed conditions. Moreover, experimental validation by the shaking table test of a shear structure under two scenarios is also performed to identify structures and seismic excitations simultaneously.
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참고문헌 (42)
참고문헌 신청
Astroza, R. / 2017 / Bayesian nonlinear structural FE model and seismic input identification for damage assessment of civil structures / Mech. Syst. Signal Pr 93:661~687
Azam, S. E. / 2015 / A dual Kalman filter approach for state estimation via output-only acceleration measurements / Mech. Syst. Signal Pr. 60-61:866~886
Chen, J. / 2004 / Simultaneous identification of structural parameters and input time history from output-only measurements / Comput. Mech 33(5):365~374
Ding, Y. / 2013 / Average acceleration discrete algorithm for force identification in the state space / Eng. Struct 56:1880~1892
Behnoud Ganjavi / 2018 / Seismic response modification factors for stiffness degrading soil-structure systems / Structural Engineering and Mechanics, An Int＇l Journal 68(2):159~170
Azam, S. E. / 2015 / A dual Kalman filter approach for state estimation via output-only acceleration measurements / Mech. Syst. Signal Pr. 60-61:866~886
Chen, J. / 2004 / Simultaneous identification of structural parameters and input time history from output-only measurements / Comput. Mech 33(5):365~374
Ding, Y. / 2013 / Average acceleration discrete algorithm for force identification in the state space / Eng. Struct 56:1880~1892
Behnoud Ganjavi / 2018 / Seismic response modification factors for stiffness degrading soil-structure systems / Structural Engineering and Mechanics, An Int＇l Journal 68(2):159~170
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