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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국콘크리트학회 International Journal of Concrete Structures and Materials International Journal of Concrete Structures and Materials Vol.13 No.2
- 발행연도
- 2019.2
- 수록면
- 195 - 209 (15page)
이용수
초록· 키워드
오류제보하기
Independent component analysis is one of the linear transformation methods based the techniques for separating blind sources from the output signals of the system. Recently, the method has been analytically applied to the identification of mode shapes and modal responses from the output signal of structures. This study aims to experimentally validate the blind source separation using ICA method and propose a novel method for identification of the modal parameters from the decomposed modal responses. The result of the experimental testing on the three-story steel scale model shows that the mode shapes obtained by ICA method are in good agreement with those by the analytical and peak-picking method in the frequency domain. Based on the robust mathematical model, ICA can calculate the natural frequency and damping ratio effectively using the probability distribution function of the instantaneous natural frequency determined by Hilbert transform of the decomposed modal responses and the change in the output covariance. Finally, the validity of the proposed method paves the way for more effective output-only modal identification for assessment of existing steel-concrete buildings.
목차
Abstract
1 Introduction
2 Basic Principles of ICA
3 Experimental Testing
4 Conclusions
References
참고문헌 (37)
참고문헌 신청
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Brincker, R., Zhang, L., & Andersen, P. (2002). Modal identification of outputonly systems using frequency domain decomposition. In: Proc. of IMAC18 (pp. 625?630). San Antonio, Texas, USA.
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Du N, Bai G, Xu Y, Qin C. Experimental and Numerical Researches on the Seismic Behavior of Tubular Reinforced Concrete Columns of Air-Cooling Structures. Inter J Concr Struct Mater. 2017;11(3):459?75.
Bee, M., & Micheyl, C. (2008). The cocktail party problem: What is it? How can it be solved? And why should animal behaviorists study it. Journal of Comparative Psychology, 122(3), 235?251.
Brincker, R., Zhang, L., & Andersen, P. (2002). Modal identification of outputonly systems using frequency domain decomposition. In: Proc. of IMAC18 (pp. 625?630). San Antonio, Texas, USA.
Cichocki, A. (2004). Blind signal processing methods for analyzing multichannel brain signals. International Journal of Bioelectromagnitism, 6(1), 22?27.
Du N, Bai G, Xu Y, Qin C. Experimental and Numerical Researches on the Seismic Behavior of Tubular Reinforced Concrete Columns of Air-Cooling Structures. Inter J Concr Struct Mater. 2017;11(3):459?75.
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