集中荷载钢筋混凝土无腹筋梁的受剪承载力

Shear Bearing Capacity of Reinforced Concrete Beams without Web Reinforcement under Concentrated Load

根据国内外的大量试验资料，采用数理统计和理论分析相结合的方法，研究了混凝土强度、剪跨比和配筋率对集中荷载作用下钢筋混凝土无腹筋梁的受剪承载力影响规律。提出的集中荷载钢筋混凝土无腹筋梁的受剪承载力计算公式，概念明确，形式简捷，与试验结果符合良好。

The shear bearing capacity of reinforced concrete beams is an old and not satisfactorily resolved problem.To evaluate the shear bearing capacity of reinforced concrete composite beams or reinforced steel-fiber-concrete beams,the accurate calcutation formulas are needed .Therefore,Based on the analysis of numerous test data,therefore the effects of concrete strength,the shear-span to depth ratio,and the reinforcement ratio of longitudinal reinforcing bar on the shear resistance of reinforced concrete beams subject to concentrated load are investigated.The formulas are proposed to calculate the shear bearing capacity of reinforced concrete beams without web reinforcement ,which are simple,in better agreement with a large number of the experimental data,and available for practical design.