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|Title:||Concrete-filled tubular columns part 2 - Column analysis|
|Source:||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|
|Appears in Collections:||Staff Publications|
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