本文通过16根集中荷载作用下无腹筋约束梁承受不同轴拉力的试验,就轴拉应力、剪跨比及反弯点对构件抗剪能力的影响进行了比较深入的探讨。主要收获是发现当剪跨比较大时,轴拉力对构件抗剪能力几乎没有影响。文中分析并解释了抗剪能力不降低的原因。 In this dissertation, 16 axially loaded beams were tested under different loads without axial reinforcement, and the influences of axial tensile stress, shear-span ratio and anti-bending point on the shear resistance of components were discussed in depth. The main achievement is to find that when the shear span is relatively large, the axial tensile force has almost no effect on the shear resistance of the component. This paper analyzes and explains why the shear capacity does not decrease.