Finite Element Analysis of Axial Compression Behavior of Steel Bone-square Steel Tube Concrete Combination Shaped Short Column

The finite element method was used to analyze the axial compression performance of 7 T-shaped steel-reinforced concrete-filled steel tube concrete special-shaped short columns. Through the whole process analysis of the load-displacement curve and related stress cloud diagram, the failure form of the composite special-shaped columns was studied. Analyze the influence of concrete grade strength, bone distribution rate and hoop index on the axial compression performance of the test piece. The results show that this new type of combined special-shaped short column has good axial compression performance, and can provide a reference for engineering practice.