增设翼墙加固钢筋混凝土柱受力性能分析

摘要

In order to study the force performance influences of factors such as axial compressive ratio and wing wall thickness of the strengthening reinforced concrete column with wing wall under low-cyclic reversed loading,considering the secondary stress characteristics of the strengthening column,the reinforced column load displacement hysteretic curve and skeleton curve are analyzed with the method of numerical analysis.The results show that:with the increasing of axial compression ratio,the carrying capacity and stiffness of reinforced column increase,but the ductility of reinforced column reduces;the wing wall reinforced column components can increase the bearing capacity and rigidity,and lower the ductility.The diversification of wing wall's thickness has a little effect on the carrying capacity of reinforced columns,but can improve the energy dissipation capacity of the reinforced column.%为了研究轴压比、翼墙厚度对增设翼墙加固的钢筋混凝土柱在低周反复荷载作用下受力性能的影响,在考虑加固柱的二次受力特性的前提下,采用数值模拟的方法分析加固柱的荷载位移滞回曲线和骨架曲线.结果表明:随着轴压比的增大,加固柱承载力、刚度增加,延性降低；翼墙厚度的变化对加固柱的承载力影响较小,但能够提高柱的耗能能力.