Liang, Q. Q. and Hadi, M. N. S. (2008) Nonlinear analysis and behavior of concrete-filled steel tubular beam-columns. In: ISEC 4: Innovations in Structural Engineering and Construction, 26-28 Sep 2007, Melbourne, Australia.
This paper presents a nonlinear fiber element analysis method for predicting the behavior of short concrete-filled steel tubular (CFST) beam-columns under axial load and biaxial bending. Nonlinear constitutive models for confined concrete and structural steel are considered in the fiber element analysis. Efficient secant algorithms are developed to iterate the depth and orientation of the neutral axis within a composite section to satisfy equilibrium conditions. The accuracy of the fiber element method is established by comparisons with existing solutions. The fiber element analysis program developed is employed to study the effects of steel ratios and concrete strengths on axial load-bending moment interaction curves for CFST beam-columns. The proposed fiber element analysis technique is shown to be efficient and can be used directly in the design of CFST beam-columns.
|Item Type:||Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)|
|Additional Information:||Publisher retains copyright of this paper.|
|Uncontrolled Keywords:||beam-columns; biaxial bending; concrete-filled steel tubular columns; composite columns; fiber element analysis; nonlinear analysis; strength|
|Subjects:||290000 Engineering and Technology > 290800 Civil Engineering > 290801 Structural Engineering|
|Depositing User:||Dr Stephen Liang|
|Date Deposited:||08 Jan 2008 06:25|
|Last Modified:||02 Jul 2013 22:51|
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