Existing reinforced concrete (RC) frame buildings have seismic vulnerabilities because of seismically deficient details. In particular, since cumulative damage caused by successive earthquakes causes serious damage, repair/retrofit rehabilitation studies for successive earthquakes are needed. This study investigates the repair effect of fiber-reinforced polymer jacketing system for the seismically-vulnerable building structures under successive earthquakes. The repair modeling method developed and validated from the previous study was implemented to the building models. Additionally, the main parameters of the FRP jacketing system were selected as the number of FRP layers associated with the confinement effects and the installation location. To define the repair effects of the FRP jacketing system with the main parameters, this study conducted nonlinear time-history analyses for the building structural models with the various repairing scenarios. Based on this investigation, the repair effects of the damaged building structures were significantly affected by the damage levels induced from the mainshocks regardless of the retrofit scenarios.

Abstract
1. 서론
2. FRP 기둥 보수 모델링 방법
3. 3층 비연성 RC 골조 모델
    3.1 비연성 RC 건물 모델 개요
    3.2 FRP 재킷 파라미터
    3.3 연속지진하중
4. 연속지진 FRP 보수효과 분석
    4.1 FRP 설치 위치
    4.2 FRP 두께
    4.3 DCF 효과
5. 결론
감사의 글
References

• 김수빈(경상국립대학교 대학원 건축공학과, 석사과정) | Kim Subin (Department of Architectural Engineering, Gyeongsang National University)
• 김혜원(국립재난안전연구원, 지진방재센터, 공학박사) | Kim Haewon (Earthquake Hazards Reduction Center, National Disaster Management Research Institute)
• 박재은(국립재난안전연구원, 지진방재센터, 공학박사) | Park Jaeeun (Earthquake Hazards Reduction Center, National Disaster Management Research Institute)
• 신지욱(경상국립대학교 건축공학과 조교수, 공학박사) | Shin Jiuk (Department of Architectural Engineering, Gyeongsang National University) Corresponding author