Design optimization of 3D steel structures: Genetic algorithms vs. classical techniques |
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Authors: | María Belén Prendes Gero Antonio Bello García |
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Affiliation: | a Construction and Production Engineering Department, Oviedo University, Barredo Campus, 33600 Mieres, Spain b Construction and Production Engineering Department, Oviedo University, Viesques Departmental Building no 6, 33204 Gijón, Spain |
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Abstract: | In this paper an elitist genetic algorithm (GA) developed by the authors is compared with common commercial solutions for complex structural optimization. After its prior validation on two-dimensional (2D) structures, the GA was tuned and improved in order to obtain structural elements with minimum weights that satisfy the ultimate limit states of the applicable building code. Subsequently, the same spatial structures were optimized using a commercial structural analysis program. Finally, the cost and weight improvements obtained using the GA, although at a higher computational cost, are discussed. |
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Keywords: | Design optimization Elitist genetic algorithm Three-dimensional steel structures Minimum weight Ultimate limit states |
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