Unified solutions on axial bearing capacity of T-shaped concrete-filled steel tube short columns with binding bars

Abstract

Based on the unified strength theory, according to the characteristics of axial bearing capacity of T-shaped concrete-filled steel tubular stub short columns with binding bars, the cross shaped section was divided into 3 rectangular sections which have binding bars and one rectangular section which has no bars. Considering intermediate principal stress, the ration of width to thickness of pipe to the bearing capacity of steel tube was in consideration too, the paper analyzed force mechanism. In the end, the mathematical formulation of bearing capacity for the T-shaped concrete-filled steel tube stub column with binding bars was obtained. The formula calculation values are in good agreement with the test value of the relevant literature.