CAJ | 학술논문

在系统分析钢筋混凝土梁受剪性能的基础上,进行了24根承受集中荷载和均布荷载的钢筋混凝土梁的受剪性能试验,主要考虑的因素有剪跨比(λ=a/h0)、跨高比(l0/h)、水平和垂直腹筋配筋率(ρsh和ρsv).详细阐述了梁的受剪特性、破坏形态、受压区混凝土的作用以及腹筋的作用(包括水平腹筋和垂直腹筋),并最终提出了钢筋混凝土梁斜截面受剪承载力统一计算方法.该方法可用于计算深梁、短梁及浅梁的斜截面承载力,计算结果与试验结果符合良好.
재계통분석강근혼응토량수전성능적기출상,진행료24근승수집중하재화균포하재적강근혼응토량적수전성능시험,주요고필적인소유전과비(λ=a/h0)、과고비(l0/h)、수평화수직복근배근솔(ρsh화ρsv).상세천술료량적수전특성、파배형태、수압구혼응토적작용이급복근적작용(포괄수평복근화수직복근),병최종제출료강근혼응토량사절면수전승재력통일계산방법.해방법가용우계산심량、단량급천량적사절면승재력,계산결과여시험결과부합량호.
Based on the systematic analysis of the shear behavior for reinforced concrete beams, the paper presents an experimental investigation involving 24 reinforced concrete beams subjected to concentrated and uniformly distributed loads. Four main factors are considered, namely shear-span ratio (λ=a/h0) , span-depth ratio (l0/h), horizontal and vertical web reinforcement ratio (ρsh & ρsv). According to the test results, the working behavior, shear failure modes, the action of concrete compression zone as well as shear (web) reinforcement (including of horizontal and vertical web reinforcement) are further elaborated. Furthermore, the unified calculation method for shear capacity of beams is presented, which can be used to calculate the shear capacity of deep beams, short beams and even normal beams. The proposed formulas' calculation results are in good agreement with the test results.