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

Korea Institute for Structural Maintenance Inspection (한국구조물진단유지관리공학회)
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Evaluation of Seismic Performance of Beam-Column Connections Using Minimally Spaced Headed Reinforcements

근접 배치된 확대머리 철근의 보-기둥 접합부 내진 성능 평가

  • 조아서 (서울대학교 건축학과 대학원) ;
  • 신형엽 (서울대학교 건축학과 대학원) ;
  • 정승용 (서울대학교 건축학과 대학원) ;
  • 강현구 (서울대학교 건축학과) ;
  • 김우석 (금오공과대학교 건축학부)
  • Received : 2019.02.27
  • Accepted : 2019.08.20
  • Published : 2019.11.01
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Abstract

To resolve the conservative requirements for clear headed-bar spacing in KBC 2016 and ACI 318-08, two 2/3-scale exterior beam-column connections were tested under cyclic seismic loading. The seismic tests primarily explored the effect on their seismic performance of using (a) small clear spacings and (b) multiple layers of headed reinforcements in the beam. Also, the previous test data were thoroughly analyzed. It was concluded that the clear bar spacing of 2db or the use of two bar layers might be permitted for headed reinforcements embedded in exterior beam-column connections.

KBC 2016 및 ACI 318-08에서 확대머리 철근의 순간격에 대한 지나치게 엄격한 요구 사항을 개선하기 위해 2/3 스케일의 외부 보-기둥 접합부 실험체를 준정적 반복 하중을 적용하여 실험을 수행하였다. 내진 실험을 통해 좁은 간격의 철근 순간격과 다열 배치 확대머리 철근 적용여부를 주요 변수로 하여 내진 성능에 미치는 영향을 검토하였다. 또한, 본 실험결과를 이전 연구자들의 실험 데이터와 함께 면밀히 분석하였다. 결론적으로 외부 보-기둥 접합부에 정착된 확대머리 철근에 대해 2db의 철근 순간격 또는 2 개층의 확대머리 철근의 사용은 내진 설계에 있어 허용될 수 있는 것으로 판단된다.

Keywords

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