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分析了深梁、浅梁和短梁斜截面应力分布规律和抗剪机理， 得出影响砼受弯构件斜截面抗剪承载力的主要因素是剪跨比ａ／ｈ０ 的大小， 而跨高比ｌ／ｈ 的大小对斜截面抗剪承载力的影响甚微， 在抗剪计算中可以忽略不计的新结论。在此基础上提出以剪跨比为主要参数的砼受弯构件斜截面抗剪承载力计算公式
The stress distribution law and shearing mechanism of the inclined beam, shallow beam and short beam in deep beams, shallow beams and short beams were analyzed. The main factor affecting the shear capacity of the flexural members was the shear ratio a/h0, and the height-to-height ratio. The size of l/h has little influence on the shear bearing capacity of the oblique section, which can be neglected in shear calculations. On this basis, the formula for the shear capacity of shear resistance of the flexural member based on the shear-span ratio is proposed.