Nonlinear analysis on square steel tube filled with steel reinforced high strength concrete subjected to bi-compression bending load

摘要

This paper presents a nonlinear analysis of square steel tube columns filled with steel reinforced concrete subjected to bi-compression bending load. Calculated results agree well with the tested results. Further, Different parameters of members were analyzed using nonlinear analysis procedure. Results showed that Slenderness ratio, stirrup ratio and eccentricity ratio have tremendous influence on capacity and initial stiffness. Steel reinforced ratio and eccentricity angle have secondary influence on capacity and initial stiffness.