Techno Press
Techno Press

Steel and Composite Structures   Volume 7, Number 3, June 2007, pages 201-217
Minimum-weight design of non-linear steel frames using combinatorial optimization algorithms
M. S. Hayalioglu and S. O. Degertekin

Abstract     [Full Text]
    Two combinatorial optimization algorithms, tabu search and simulated annealing, are presented for the minimum-weight design of geometrically non-linear steel plane frames. The design algorithms obtain minimum weight frames by selecting suitable sections from a standard set of steel sections such as American Institute of Steel Construction (AISC) wide-flange (W) shapes. Stress constraints of AISC Load and Resistance Factor Design (LRFD) specification, maximum and interstorey drift constraints and size constraints for columns were imposed on frames. The stress constraints of AISC Allowable Stress Design (ASD) were also mounted in the two algorithms. The comparisons between AISC-LRFD and AISC-ASD specifications were also made while tabu search and simulated annealing were used separately. The algorithms were applied to the optimum design of three frame structures. The designs obtained using tabu search were compared to those where simulated annealing was considered. The comparisons showed that the tabu search algorithm yielded better designs with AISC-LRFD code specification.
Key Words
    optimum design; tabu search; simulated annealing; steel frames; non-linear analysis; allowable stress design; load and resistance factor design.
Department of Civil Engineering, Dicle University, 21280, Diyarbakir, Turkey

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