Nonlinear Finite Element Analysis of Stiffened T-Shaped Thin-Walled Concrete-Filled Steel Tube Composite Columns

Abstract:

Based on the characteristics of the special-shaped concrete-filled steel tubes and consideration of material nonlinearity of constitutive relation, stimulation of 6 T-shaped thin-walled ribbed and un-ribbed concrete-filled steel tube short columns is implemented, as well as comparable analysis of stress, strain, displacement and bearing capacity, through the finite element analysis software ANSYS. The result indicates that the rib can effectively improve the ductility, delaying the buckling occurs, which enhances the core concrete confinement effect, so as the stimulated ultimate bearing capacity which is greater than nominal ultimate bearing capacity.

• Periodical: Applied Mechanics and Materials (Volumes 193-194)
• Pages: 1461-1464
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.193-194.1461
• Online since: August 2012
• Authors: Bai Shou Li, Ai Hua Jin
• Keywords: Bearing Capacity, Core Concrete, Finite Element Method (FEM), Rib, Stress Strain, T-Shaped Thin-Walled Concrete-Filled Steel Tube Composite Column

References

[1] HAN Lin-hai, in: Concrete Filled Steel Tube Structure- Theory and Practice, edited by China Science Publishing house, (2004).In Chinese

[2] HAN Lin-hai, in: Concrete Filled Steel Tube Structure, edited by China Science Publishing house, (2005).In Chinese

[3] Steel rectangular Tube Filled with Concrete (CECS159:2004).In Chinese