【摘要】 主要研究了空心圆钢管混凝土柱的抗震延性性能,用有限元软件ABAQUS对空心圆钢管混凝土柱在低周反复荷载的下受力性能进行了模拟,并绘出它的P-Δ的骨架曲线,根据骨架曲线,提出延性系数计算模型,并利用简化模型对空心圆钢管混凝土柱的延性系数进行了研究,分别得出了轴压比、长细比、空心率、钢材强度、混凝土强度、含钢率对延性系数的影响。根据研究结果,可以得到空心圆钢管混凝土柱的延性的变化规律,这些规律,为以后的空心钢管混凝土柱的抗震设计提供了参考和依据。更多还原

【Abstract】 This paper mainly studies the earthquake-resistance ductility performance of the hollow concrete-filled circular steel tubular column under low cyclical hysteretic load by using the nonlinear finite element software Abaqus.Then its P-Δ skeleton curves are obtained,based on which to propose the calculation model of ductility coefficient is proposed.Through the simplified model,the ductility coefficient of the hollow concrete-filled circular steel tubular column is studied. The influence of axial compression ratio,slenderness ratio,hollow ratio,steel strength,concrete strength and steel ratio on the ductility coefficient is presented,and the suggestion on the future earthquake-resistance design of the hollow concrete-filled circular steel tubular column is available for reference.更多还原