Journal of the Korea Institute of Building Construction (한국건축시공학회지)

The Korean Institute of Building Construction (한국건축시공학회)
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Experimental Study of Reinforced High-Strength Concrete Beams without Stirrups Considering Shear Behaviour

전단보강근이 없는 고강도 콘크리트 깊은 보의 전단특성 실험연구

  • Yang, Seong-Hwan (School of Architecture & Urban Design, Incheon National University) ;
  • Lee, Dong-Jun (School of Civil Engineering, Seoul National University of Science and Technology)
  • Received : 2014.05.14
  • Accepted : 2014.07.01
  • Published : 2014.08.20
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Abstract

Shear strengths of reinforced high strength concrete beams without web reinforcement are studied with experimental analysis of 10 specimen with 2.4 shear span-to-depth ratio (a/d) beams for 4 stages of concrete compressive stength over 60MPa comparing ultimate loads and shear stresses of ACI363R and KCI code equations. Expecially, concrete compressive strengths used in shear design were essentially limited to 10,000 psi (69MPa) by ACI363R and KCI Code. The modified Code equation's shear stresses of the specimen without the limit are compared with test results. The comparison between the modified exist Code equations results and test results are expected to show an available scope to apply in construction field and to give considerations of design and contraction.

전단보강근이 없는 고강도 콘크리트 보의 전단능력을 평가하기 위하여 전단경간비 2.4인 시험체를 콘크리트 압축강도 60MPa 이상의 4단계별로 제작하여 파괴하중과 전단응력을 기존의 국내외 설계기준과 비교하였다. 특히 적용가능한 한계콘크리트 압축강도 70MPa 이상인 경우 전단응력을 기존 제안식을 보정하지 않고 적용하여 실험결과와 비교하였다. 고강도 콘크리트 보의 전단파괴 강도를 결정하여 기존의 설계기준결과와 차이를 분석하고 시공현장에서 고려해야할 특기사항을 제안하고자 한다.

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References

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