Guided stochastic search technique for discrete sizing optimization of steel trusses: A design-driven heuristic approach

Authors:
S. Kazemzadeh Azad;O. Hasançebi;M. P. Saka
Affiliations:
Middle East Technical University, Department of Civil Engineering, Ankara, Turkey;Middle East Technical University, Department of Civil Engineering, Ankara, Turkey;Department of Civil Engineering, University of Bahrain, Isa Town, Bahrain
Venue:
Computers and Structures
Year:
2014

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Abstract

This study presents a design-driven heuristic approach named guided stochastic search (GSS) technique for discrete sizing optimization of steel trusses. The method works on the basis of guiding the optimization process using the well-known principle of virtual work as well as the information collected during the structural analysis and design stages. The performance of the proposed technique is investigated through a benchmark truss instance as well as four real-size trusses sized for minimum weight according to AISC-LRFD specifications. A comparison of the numerical results obtained using the GSS with those of other available algorithms indicates that the proposed technique is capable of locating promising solutions using lesser computational effort.