한국지진공학회논문집 (Journal of the Earthquake Engineering Society of Korea)

  • 제23권1호
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  • Pages.43-54
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  • 2019
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  • 1226-525X(pISSN)
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  • 2234-1099(eISSN)
한국지진공학회 (Earthquake Engineering Society of Korea)
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고강도 표면매립용철근과 탄소섬유시트로 보강된 비연성 철근콘크리트 골조의 실물 진동기 실험

Full-Scale Shaker Testing of Non-Ductile RC Frame Structure Retrofitted Using High-Strength Near Surface Mounted Rebars and Carbon FRP Sheets

  • 신지욱 (한국건설기술연구원 국민생활연구본부) ;
  • 전종수 (안동대학교 토목공학과) ;
  • Shin, Jiuk (Department of Building and Urban Research, Korea Institute of Civil Engineering and Building Technology) ;
  • Jeon, Jong-Su (Department of Civil Engineering, Andong National University) ;
  • Wright, Timothy R. (Solutions Consultant, Axis Group)
  • 투고 : 2018.07.02
  • 심사 : 2018.11.28
  • 발행 : 2019.01.01
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초록

Existing reinforced concrete frame buildings designed for only gravity loads have been seismically vulnerable due to their inadequate column detailing. The seismic vulnerabilities can be mitigated by the application of a column retrofit technique, which combines high-strength near surface mounted bars with a fiber reinforced polymer wrapping system. This study presents the full-scale shaker testing of a non-ductile frame structure retrofitted using the combined retrofit system. The full-scale dynamic testing was performed to measure realistic dynamic responses and to investigate the effectiveness of the retrofit system through the comparison of the measured responses between as-built and retrofitted test frames. Experimental results demonstrated that the retrofit system reduced the dynamic responses without any significant damage on the columns because it improved flexural, shear and lap-splice resisting capacities. In addition, the retrofit system contributed to changing a damage mechanism from a soft-story mechanism (column-sidesway mechanism) to a mixed-damage mechanism, which was commonly found in reinforced concrete buildings with strong-column weak-beam system.

키워드

참고문헌

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