Journal of the Architectural Institute of Korea Structure & Construction (대한건축학회논문집:구조계)

Architectural Institute of Korea (대한건축학회)
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Improvement and Evaluation of Seismic Performance of Reinforced Concrete Exterior Beam-Column Joints using Hybrid Retrofitting with AFRP Sheets and Embedded FRP Reinforcements

AFRP 쉬트와 매입형 FRP 보강재를 복합 보강한 R/C 외부 보-기둥 접합부의 내진성능 평가 및 개선

  • Received : 2017.12.17
  • Accepted : 2018.12.01
  • Published : 2018.12.30
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Abstract

In this study, experimental research was carried out to evaluate the seismic performance of reinforced concrete exterior beam-column joint regions using hybrid retrofitting with AFRP sheets and embedded CFRP reinforcements in existing reinforced concrete building. Therefore it was constructed and tested three specimens retrofitting the beam-column joint regions using such retrofitting materials. Specimens, designed by retrofitting the beam-column joint regions of existing reinforced concrete structure, were showed the stable failure mode and increase of load-carrying capacity due to the effect of crack control at the times of initial loading and confinement of retrofitting materials during testing. Specimens RBCJ-SRA3 designed by the retrofitting of AFRP sheets and embedded CFRP reinforcements in reinforced exterior beam-column joint regions were increased its maximum load carrying capacity by 1.86 times and its energy dissipation capacity by 1.65 times in comparison with standard specimen RBCJ for a displacement ductility of 5.

Keywords

Acknowledgement

Supported by : 한국연구재단

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