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

Architectural Institute of Korea (대한건축학회)
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A Study on the Effect of Steel Fiber in Reinforced Concrete Coupling Beam Subjected to Cyclic Loading

반복하중을 받는 철근콘크리트 연결보에서 강섬유의 보강효과에 관한 연구

  • 김진성 (한양대학교 대학원 건축공학과) ;
  • 배백일 (한양사이버대학교 디지털건축도시공학과) ;
  • 최창식 (한양대학교 건축공학부)
  • Received : 2019.08.10
  • Accepted : 2019.09.11
  • Published : 2019.10.30
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Abstract

In this study, four reinforced concrete coupling beams were subjected to cyclic lateral loading test to evaluate the structural performance of coupling beam according to volume fraction of steel fiber. For this purpose, the volume fraction of steel fiber(0%, 1%, 2%) and transverse reinforcement spacing were determined as the main parameter. According to the test results, the maximum strength of D-40C-s100-0 was 1.15, 1.13, 1.05 times higher than D-40C-s300-0, D-40C-s300-1, D-40C-s300-2, respectively. The maximum strength of coupling beams with mitigated rebar details increases as the volume fraction of steel fiber increases. Although steel fiber 2% reinforced specimen(D-40C-s300-2) did not satisfy the amount of transverse reinforcement required for seismic design of coupling beam, the overall performance including to maximum strength, ductility and energy dissipation capacity was similar to the control specimen(D-40C-s100-0). As a result, the use of steel fiber with 2% reinforcement can partially replace the transverse reinforcement in diagonally reinforced concrete coupling beam.

Keywords

Acknowledgement

Supported by : 과학기술정보통신부, 교육부

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