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在经典修正压力场理论的基础上做了进一步的研究,根据钢筋混凝土受弯构件的剪切破坏机理,考虑上部受压区混凝土和下部受拉区骨料咬合力及箍筋共同提供受剪承载力,推导出截面的受剪承载力表达式。与所收集的国内外有腹筋梁的275个试验结果的比较表明,采用该文提出的受剪承载力表达式计算的受剪承载力与试验结果的变异性较小,可用于钢筋混凝土梁的抗剪分析和设计。
Based on the classical theory of modified pressure field, further study is made. According to the shear failure mechanism of RC bent members, considering the bite force of the aggregate in the upper compression zone and the lower tension zone and the stirrup together to provide shear bearing Force, derived cross-section of the shear capacity of expression. Compared with the collected results of 275 tests with web reinforcement beams at home and abroad, it is found that the shear capacity calculated by the shear capacity formula proposed in this paper is small and the variability of the test results is small. It can be used in reinforced concrete beams Shear analysis and design.