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Title: Concrete-filled tubular columns part 2 - Column analysis
Authors: Gayathri, V.
Shanmugam, N.E. 
Choo, Y.S. 
Keywords: Axial rigidity
Composite columns
Cyclic bending
Flexural rigidity
Geometric nonlinearity
M-P-ε relations
M-P-φ relations
Material nonlinearity
Nonlinear analysis
Issue Date: Dec-2004
Citation: Gayathri, V.,Shanmugam, N.E.,Choo, Y.S. (2004-12). Concrete-filled tubular columns part 2 - Column analysis. International Journal of Structural Stability and Dynamics 4 (4) : 479-495. ScholarBank@NUS Repository.
Abstract: This paper is concerned with an analytical model for column analysis of concrete-filled tubular beam-columns subjected to the combined action of axial load and monotonic or cyclic bending. A method of segmentation is adopted in the analysis of beam-columns. The flexural and axial rigidities of the beam-column segments are derived from M-P-φ and M-P-ε relations obtained through fibre-analysis explained in Part 1 1 of the paper. Geometric and material nonlinearities are taken into account and incremental equilibrium equations are formulated based on an updated Lagrangian formulation. An incremental-iterative Newton-Raphson iteration technique is adopted to obtain the solution of the equations. The limitation of Newton-Raphson technique in approaching the limit points is overcome by using a generalized stiffness parameter, thereby tracing the post-buckling response. The accuracy of the model is verified by comparing the results with the experimental values available in published literature.
Source Title: International Journal of Structural Stability and Dynamics
ISSN: 14658763
Appears in Collections:Staff Publications

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