论文部分内容阅读
根据9根钢筋混凝土不等肢异形柱在低周反复荷载作用下抗剪性能试验研究,分析了翼缘尺寸对异形柱抗剪承载力的影响。采用桁架-拱模型理论对异形柱的受力进行了分析。结果表明:异形柱的剪力分别由桁架机构和拱机构承担,由于翼缘部分参与抗剪作用,可以提高异形柱的抗剪承载力。基于桁架-拱模型,推导出考虑翼缘影响的异形柱抗剪承载力计算公式,通过与试验数据的比较发现,两者吻合较好。
According to the experimental research on the shear resistance of nine special-shaped columns of unequal-shaped reinforced concrete under low cyclic load, the influence of flange size on the shear strength of special-shaped columns is analyzed. The truss-arch model is used to analyze the force of special-shaped columns. The results show that the shear of special-shaped columns is respectively assumed by the truss mechanism and the arch mechanism, and the shear resistance of the special-shaped columns can be improved due to the participation of the flange part in the shear resistance. Based on the truss-arch model, the formula for calculating the shear strength of special-shaped columns considering the influence of flange is deduced. Comparing with the experimental data, it is found that the two agree well with each other.