钢-混凝土组合桥梁中无抗剪配筋的桥面板在轴向拉力作用下的抗剪极限承载力试验研究

THE TEST STUDY ON SHEAR STRENGTH OF CONCRETE SLAB WITHOUT SHEAR REINFORCEMENT OF STEEL-CONCRETE COMPOSITE BRIDGE UNDER AXIAL TENSILE FORCE

完成31根钢筋混凝土梁的剪切破坏试验,对钢-混凝土组合桥梁中无抗剪配筋的桥面板在轴向拉力作用下的抗剪极限承载力进行了研究。试验中主要考虑了轴向拉力对抗剪极限承载力的影响,同时对配筋率、最小抗剪配筋、混凝土强度等级等其他因素也进行了研究。试验结果表明,欧洲规范2第1部分中用来计算无抗剪配筋的钢筋混凝土构件的抗剪极限承载力的公式过于保守,建议进行修正。

Shear failure tests of 31 specimen of reinforced concrete beams were carried out.The shear strength of concrete slab without shear reinforcement of steel-concrete composite bridge under axial tensile force was studied.In these tests the influence of axial tensile force on the shear strength was mainly considered.Meanwhile,other factors,such as the ratio of reinforcement,minimum shear reinforcement,the class of concrete etc.,were also studied.The results of tests reveal that in Eurocode 2 part 1 the formula,...