【摘要】 采用桁架~拱模型推导了箍筋和纵筋锈蚀的简支梁斜截面受剪承载力理论计算公式,该公式较好地考虑了剪跨比、配箍率、箍筋锈蚀程度、纵筋锈蚀程度对锈蚀钢筋混凝土简支梁斜截面受剪承载力的影响,与试验结果符合较好。进一步提出了锈蚀钢筋混凝土简支梁斜截面受剪承载力实用简化计算公式,与试验结果对比表明简化计算公式合理,可供工程应用参考。更多还原

【Abstract】 The truss-arch model is adopted to deduce a theoretic formula calculating shear bear capacity of simple supported reinforced concrete beam with corroded stirrups and longitudinal steel.The formula preferably includes several factors effecting shear bear capacity of simple supported reinforced concrete beams with corroded stirrups and longitudinal steel such as shearing-span rate,stirrups rate,stirrups corrosion extent and longitudinal steel corrosion extent.The calculations are in good agreement with the tests.Furthermore,a practical simple calculating formula for shear capacity of simply supported concrete beams with corroded reinforcements is provided,and it is safe and reasonable compared with the test results.更多还原