Computational Structural Engineering (전산구조공학)

Computational Structural Engineering Institute of Korea (한국전산구조공학회)
권호 표지

Damage Estimation of Bridge Structures Using System Identification

동특성추정법을 이용한 교량구조물의 손상도 추정

  • Published : 1993.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

A method to estimate damage of bridge structures is developed using system identification approach. Dynamic behavior of damaged structures is represented by a non-linear hysteretic moment model. Structural properties can be evaluated through system identification. To incorporate variability of the structural properties and uncertainties of structural response, damage is represented as random quantities. Numerical example is shown for the bridge structure under different ground excitation.

본 논문에서는 동특성 추정법(system identification)을 이용한 교량구조의 손상정도를 평가하는 방법이 제시되었다. 손상된 구조물의 비선형 동적거동은 휨모우멘트와 곡률반경의 시간이력 관계로써 표시하였으며, 구조물의 성질을 나타내는 특성계수는 실측자료를 이용한 동특성추정법을 사용하여 추정하였다. 또한 구조물의 성질의 다양성과 응답의 불확실성을 고려하여 손상은 확률변수로 나타내었으며, 예제해석으로는 곡선교의 손상도추정이 수행되었다.

Keywords

References

  1. J. of Eng. Mech. Nonstationary Stochastic Model of Earthquake Motions Amin,M.;Ang,A.H.S.
  2. J. of Struct. Eng. Seismic Damage Analysis of Reinforced Concrete Buildings Park,Y.J.;Ang,A.H.S.;Wen,Y.K.
  3. J. of Struct. Eng. Stochastic Evaluation of Seismic Structural Performances Suse,R.;Wen,Y.K.;Ang,A.H.S.
  4. J. of Eng. Random Vibration of Hysterestic Degrading Systems Baber,T.T.;Wen,Y.K.
  5. Proceedings of ICOSSAR Damage Assessment of Bridge Structures by System Identification Yun,C.B.;Kim,W.J.;Agn,A.H.S.
  6. J. of Eng. Mech. Distruibution of Maximum and Statistical Response Spectra Yang,J.C.;Liu,S.C.
  7. University of Illinois, SRS No. 504 Stochastic Analysis of Liquefaction under Earthquake Loading Pires,J.E.A.;Wen,Y.K.;Ang,A.H.S.
  8. University of Illinois, SRS No. 536 Seismic Damage Analysis and Design of Unreinforced Masonary Buildings Kwork,Y.H.;Ang,A.H.S.
  9. EERC 76-18 Experimental Model Studies on the Seismic Response of High Curved Overcrossing Williams,D.;Godden,W.G.
  10. Proceedings of EERI Damage Assessment of Existing Bridge Structures with System Identification Ang,A.H.S.;Kim,W.J.