Department of Civil Engineering
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Browsing Department of Civil Engineering by Author "AL-NUWAB, Sirree Naji Mahmood"
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Item OPTIMIZATION OF CONCRETE FILLED STEEL TUBULAR COLUMNS UNDER ECCENTRIC COMPRESSIVE LOADING(2022-04-10) AL-NUWAB, Sirree Naji Mahmood; AKIŞ, TolgaThis study addresses the optimum design of circular concrete filled steel tubular (CFST) columns under the action of eccentric loading. The well-known particle swarm optimization (PSO) algorithm is used for the cost minimization of these columns. Two dimensional axial force-bending moment interaction curves are assumed to be in the forms of polynomial expressions, which are evaluated by a number of empirical equations based on experimental results. The local and global buckling are considered to be the two main constraints used in the optimization studies. A computer code is developed in the scope of this work in which the PSO algorithm in MATLAB is implemented. Circular CFST columns with different heights, steel yield stresses and concrete strengths are considered in the optimization studies. The obtained numerical results, based on different values of axial loads and bending moments indicate the usefulness and efficiency of the proposed approach in optimum design of the CFST columns.