The research on the axial mechanical properties of lightweight aggregate concrete filled steel tubular col-umns has already been carried out in China. However, there are few literatures about the hysteretic behavior of lightweight aggregate concrete filled steel tubular columns.In this paper, the hysteretic behavior analysis model of 7 square steel tube lightweight aggregate concrete columns is established on the basis of large general software ABAQUS.On the basis of choosing the appropriate material constitutive relation,the influence of two parameters,in-cluding steel ratio and axial compression ratio,on the skeleton curve of members is emphatically analyzed.The re-sults show that the axial compression ratio affects the shape of the skeleton curve,and the horizontal bearing capaci-ty and ductility decrease slightly with the increase of the axial compression ratio,but the initial stiffness of the mem-ber has little effect;As the steel ratio becomes large,stiffness change component of elastic obviously,the horizontal bearing capacity has been greatly improved,but the overall rate of steel mainly affect the numerical skeleton curve, the influence of the shape of the component of the load displacement curve is very small.%国内对于钢管轻骨料混凝土柱轴向力学性能的研究已开始多年,但目前,对于钢管轻骨料混凝土柱滞回性能的研究却很少.本文基于大型通用软件ABAQUS建立了7个方钢管轻骨料混凝土柱滞回性能分析模型.在选取了合适的材料本构关系的基础上,重点分析了含钢率、轴压比两大参数对于构件骨架曲线的影响.结果表明,轴压比影响构件骨架曲线的形状,随着轴压比的增大,构件水平承载力以及延性略有减小,但对于构件初始刚度影响不大.随着含钢率的变大,构件弹性阶段刚度变化明显、水平承载力有很大提高,但含钢率总体上主要影响骨架曲线的数值,对于构件荷载-位移曲线的形状影响则很小.
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