龙炳煌  蒋大骅
    （武汉工业大学 430070）

[提要] 提出了环形截面梁在剪压破坏条件下的力学模式，根据平衡条件和混凝土复合应力条件下的强度准则，建立了无腹筋梁的受剪承载力计算公式，并将计算结果与试验结果作了比较。
[关键词]  无腹筋梁 环形截面梁 受剪承载力

A theoretical model is proposed for tubular beam without web reinforcement under shear failure. According to the conditions of equilibrium and a failure criterion, a formula is proposed for the shear strength. And the comparison is made between the ultimate strength observed in the experiments and those calculated by using various proposed formulae.
Keywords: without web reinforcement; tubular beam;shear strength