Abstract:In order to study the axial compression performance of multi-cavity steel tube recycled concrete short column, a multi-cavity steel tube recycled concrete short column was designed. The failure mode, load displacement curve, stress process, interaction and axial degradation of the composite short column under axial pressure are studied by ABAQUS. The main research results are as follows: Under axial load, multi-cell columns composed of concrete-filled steel tube has longer elastic range, high bearing capacity, good ductility and rigidity. In the process of loading, the recycled concrete part of rebar and steel tube of multi-cell columns composed of concrete-filled steel tube are under the coordination of loading. During the stress process, the contact stress between the steel tube and the core recycled concrete and the contact stress between the steel tube and the external recycled concrete was concentrated at the four corners and the short edges, while the contact stress at the long edges was not obvious. Under axial load, multi-cell columns composed of concrete-filled steel tube can maintain good ductility, energy dissipation capacity and rigidity.