Numerical Studies on Short Concrete-Filled Double Skin Composite Tube Columns under Axially Compressive Loads by using ABAQUS/CAE 6.14

Concrete-filled double skin composite tube columns are special columns in which concrete is sandwiched between two tube structures. The outer tube is made of steel and the inner tube is PVC. Concrete-filled steel tubular (CFST) structure offers numerous structural benefits, and has been widely used in civil engineering structures. A numerical study of the behaviour of CFDSCT members under axially compressive loads using ABAQUS, where nonlinear material behaviour and strain rates of steel and concrete are included. The finite element analysis (FEA) models of CFDSCT members are described and verified using existing experimental results. A parametric study investigating the influence of different radius-to- thickness ratio, hollow section ratio, thickness of PVC-U pipe of the column under axially compressive load. The result shows that there is a good agreement between the experimental data and the finite element analysis data.