An expanded finite element analysis of 37 full scale specimens of recycled aggregate concrete filled square steel tube column with different design parameters was carried out to study the hysteretic performance.The influence of parameter change on the hysteretic performance indexes was expressed.It is shown that on the basis of the hysteretic behavior indexes the recycled aggregate concrete could be used to bearing structure of recycled aggregate concrete filled square steel tube.With the steel rate increasing

the plumpness of hysteretic curves

the initial elastic stiffness

the peak bearing capacity and the ductility increase.With the steel type increasing

the plumpness of hysteretic curves and the peak bearing capacity increase

while the initial stiffness of elastic stage and the ductility change little.The peak bearing capacity and the ductility decrease as the axial compression rate increases

but the energy dissipation coefficient increases under the same load and displacement.With the slenderness increasing

the hysteretic curve becomes not plump

the peak bearing capacity

the ductility and the energy dissipation coefficient under the same load and displacement decrease obviously.With depth-width rate increasing

the initial stiffness of elastic stage

the peak bearing capacity and the ductility increase

while the energy dissipation coefficient under the same load and displacement decreases.