Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Analysis of Seismic Response due to the Dynamic Coupling Between a Primary Structure and Secondary System

구조물과 부계통간의 연계방법에 따른 지진응답 분석

  • Jung, Kwangsub (Research Reactor System Design Division, Korea Atomic Energy Research Institute) ;
  • Kwag, Shinyoung (Department of Civil & Environmental Engineering, Hanbat National University) ;
  • Choi, In-Kil (Mechanical and Structural Safety Research Division, Korea Atomic Energy Research Institute) ;
  • Eem, Seunghyun (Major in Plant System Engineering, School of Convergence & Fusion System Engineering, Kyungpook National University)
  • 정광섭 (한국원자력연구원 연구로공학부) ;
  • 곽신영 (한밭대학교 건설환경공학과) ;
  • 최인길 (한국원자력연구원 기계.구조안전연구부) ;
  • 임승현 (경북대학교 융복합시스템공 학부 플랜트시스템전공)
  • Received : 2019.08.20
  • Accepted : 2020.02.06
  • Published : 2020.03.01
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Abstract

Seismic responses due to the dynamic coupling between a primary structure and secondary system connected to a structure are analyzed in this study. The seismic responses are compared based on dynamic coupling criteria and according to the error level in the natural frequency, with the recent criteria being reliant on the error level in the spectral displacement response. The acceleration responses and relative displacement responses of a primary structure and a secondary system for a coupled model and two different decoupled models of two degrees-of-freedom system are calculated by means of the time integration method. Errors in seismic responses of the uncoupled models are reduced with the recent criteria. As the natural frequency of the secondary system increases, error in the natural frequency decreases, but seismic responses of uncoupled models can be underestimated compared to that of coupled model. Results in this paper can help determine dynamic coupling and predict uncoupled models' response conservatism.

Keywords

References

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