Journal of the Korea institute for structural maintenance and inspection (한국구조물진단유지관리공학회 논문집)

Korea Institute for Structural Maintenance Inspection (한국구조물진단유지관리공학회)
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Evaluation on Anchorage Performance of 57mm Headed Bars in Exterior Beam-Column Joint under Cyclic Loading

반복하중을 받는 외부 보-기둥 접합부에 정착된 57mm 확대머리철근의 정착성능평가

  • 정형석 (경남대학교 소방방재공학과) ;
  • 정주홍 (대진대학교 스마트건축토목공학부) ;
  • 최창식 (한양대학교 건축공학부) ;
  • 배백일 (한양사이버대학교 디지털건축도시공학과) ;
  • 최현기 (경남대학교 소방방재공학과)
  • Received : 2021.09.24
  • Accepted : 2021.11.02
  • Published : 2021.12.31
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Abstract

In this study, the anchoring performance of 57mm headed bars anchored at the external beam-column joint under cyclic loading was evaluated. A total of 6 external beam-column joint test specimens were planned, and anchorage performance was evaluated by setting concrete compressive strength, side covering thickness, lateral reinforcement ratio, and fracture type as major experimental variables. As result of cyclic loading test, it was found that the factors that had the greatest influence on the anchoring capacity of the large-diameter headed bar anchored at the joint were the side cover thickness and the transverse reinforcing bar. It was confirmed that the 57mm large-diameter headed bar anchored at the external beam-column joint showed sufficient anchoring capacity even under cyclic loading.

본 연구에서는 반복하중을 받는 외부 보-기둥 접합부에 정착된 57mm 확대머리철근의 정착성능을 평가하였다. 총 4개의 외부 보-기둥 접합부 실험체를 계획하였으며, 콘크리트 압축강도, 측면피복두께, 횡보강근비 및 파괴유형을 주요 실험 변수로 설정하여 정착성능평가를 수행하였다. 성능평가 결과, 접합부에 정착된 대구경 확대머리철근의 정착성능에 가장 큰 영향을 주는 요소는 측면피복두께 및 횡보강근으로 나타났으며, 외부 보-기둥 접합부에 정착된 57mm 대구경 확대머리철근은 반복하중하에서도 충분한 정착성능이 발현되는 것을 확인할 수 있었다.

Keywords

Acknowledgement

본 연구는 국토교통부/국토교통과학기술진흥원의 지원으로 수행되었음(21CTAP-C164325-01)

References

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