Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Seismic Retrofit Scheme of FRP Column Jacketing System for Non-Seismic RC Building Frame

비내진 철근콘크리트 건축물의 FRP 재킷에 대한 내진보강 설계 전략

  • Hwang, Heejin (Department of Architecture Engineering, Gyeongsang National University) ;
  • Kim, Haewon (National Earthquake Hazards Reduction Center, National Disaster Management Research Institute) ;
  • Oh, Keunyeong (Department of Building Research, Korea Institute of Civil Engineering and Building Technology) ;
  • Shin, Jiuk (Department of Architecture Engineering, Gyeongsang National University)
  • 황희진 (경상국립대학교 건축공학과) ;
  • 김혜원 (국립재난안전연구원 지진방재센터) ;
  • 오근영 (한국건설기술연구원 건축연구본부) ;
  • 신지욱 (경상국립대학교 건축공학과)
  • Received : 2023.07.07
  • Accepted : 2023.09.04
  • Published : 2023.11.01
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Abstract

Existing reinforced concrete buildings with seismically deficient details have premature failure under earthquake loads. The fiber-reinforced polymer column jacket enhances the lateral resisting capacities with additional confining pressures. This paper aims to quantify the retrofit effect varying the confinement and stiffness-related parameters under three earthquake scenarios and establish the retrofit strategy. The retrofit effects were estimated by comparing energy demands between non-retrofitted and retrofitted conditions. The retrofit design parameters are determined considering seismic hazard levels to maximize the retrofit effects. The critical parameters of the retrofit system were determined by the confinement-related parameters at moderate and high seismic levels and the stiffness-related parameters at low seismic levels.

Keywords

Acknowledgement

이 연구는 행정안전부 국립재난안전연구원 재난안전 공동연구 기술개발사업의 지원(2022-MOIS63-003) 및 과학기술정보통신부의 재원으로 수행된 한국건설기술연구원 주요사업의 결과물임(No.20230146-001).

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