전단경간비가 다른 철근콘크리트 보의 최소전단철근비 예측에 관한 실험적 연구

An Experimental Study to Predict Minimum Shear Reinforcement Ratio of RC Beams with Various Shear Span-to-Depth Ratios

  • 김욱연 (성균관대학교 건축공학과) ;
  • 김상우 (성균관대학교 건축공학과) ;
  • 이정윤 (성균관대학교 건축공학과)
  • 발행 : 2003.05.01

초록

The purpose of this experimental study is to investigate the influence of shear span-to-depth ratio on the minimum shear reinforcement ratio of reinforced concrete beams. In this study, 7 reinforced concrete beam specimens were tested. The parameters of experiment are shear span-to-depth ratio(a/d=2.0, 3.0, 4.0) and shear reinforcement ratio($p_v$=0%, 0.183%, and 0.233%). The section of all secimens was 350mm width and 450mm depth. The observed results were compared with the calculated results by the current ACI 318-02 Building Code and the proposed equation. The safety rate of the specimens, L5S2A, L5S3A, L5S4A, and L5S4P specimens were 1.80, 1.25, 1.38, and 1.56 respectively. The test results indicated that the shear behavior of reinforced concrete beams with the minimum shear reinforcement was influenced by the shear span-to-depth ratio.

키워드