Effect of Different Forms of Force Transmission Members on the Performance of Rectangular Concrete-Filled Steel Tubular Columns under Axial Compression

Based on the study of the mechanical properties of the rectangular concrete-filled steel tube (CFRT) column with I-steel section and rectangular inner ring plate as the force transmission member, this paper designed four other force transmission measures: rectangular steel plate, T-shaped steel beam, channel steel beam, box steel beam. The model of CFRT column with transmission components (different structural measures) was established by general finite element software ABAQUS, and the finite element numerical simulation analysis was carried. They were studied that the effect of different forms of transmission components on the performance of CFRT column under axial force and the interaction behavior of CFRT column. The results show that the CFRT column with T-shaped steel beam can not only improve the bearing capacity of the column, but also achieve better interaction behavior, and save the amount of steel, which provides a basis for the reasonable effective selection of force transmission members in engineering.