Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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A Study on the Relationship between Response Spectrum and Seismic Fragility Using Single Degree of Freedom System

단자유도 해석모델을 활용한 응답스펙트럼과 지진취약도 곡선과의 관계에 대한 연구

  • Park, Sangki (Department of Structural Engineering Research, Korea Institute of Civil Engineering and Building Technology) ;
  • Cho, Jeong-rae (Department of Structural Engineering Research, Korea Institute of Civil Engineering and Building Technology) ;
  • Cho, Chang-beck (Department of Structural Engineering Research, Korea Institute of Civil Engineering and Building Technology) ;
  • Lee, JinHyuk (Department of Structural Engineering Research, Korea Institute of Civil Engineering and Building Technology) ;
  • Kim, Dong-Chan (Department of Structural Engineering Research, Korea Institute of Civil Engineering and Building Technology)
  • 박상기 (한국건설기술연구원 구조연구본부) ;
  • 조정래 (한국건설기술연구원 구조연구본부) ;
  • 조창백 (한국건설기술연구원 구조연구본부) ;
  • 이진혁 (한국건설기술연구원 구조연구본부) ;
  • 김동찬 (한국건설기술연구원 구조연구본부)
  • Received : 2023.08.14
  • Accepted : 2023.09.04
  • Published : 2023.11.01
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Abstract

In general, the design response spectrum in seismic design codes is based on the mean-plus-one-standard deviation response spectrum to secure high safety. In this study, response spectrum analysis was performed using seismic wave records adopted in domestic horizontal design spectrum development studies, while three response spectra were calculated by combining the mean and standard deviation of the spectra. Seismic wave spectral matching generated seismic wave sets matching each response spectrum. Then, seismic fragility was performed by setting three damage levels using a single-degree-of-freedom system. A correlation analysis was performed using a comparative analysis of the change in the response spectrum and the seismic fragility concerning the three response spectra. Finally, in the case of the response spectrum considering the mean and standard deviation, like the design response spectrum, the earthquake load was relatively high, indicating that conservative design or high safety can be secured.

Keywords

Acknowledgement

본 연구는 국토교통부/국토교통과학기술진흥원의 지원으로 수행되었음(과제번호RS-2021-KA163162).

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