Ant colony optimization of irregular steel frames including elemental warping effect

Authors:
İ. Aydoğdu;M. P. Saka
Affiliations:
Middle East Technical University, Engineering Sciences Department, 06531 Ankara, Turkey;Middle East Technical University, Engineering Sciences Department, 06531 Ankara, Turkey
Venue:
Advances in Engineering Software
Year:
2012

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Abstract

The effect of warping in the design of steel space frames having members of thin walled steel sections is significant. In this paper the optimum design problem of steel space frames is formulated according to the provisions of LRFD-AISC (Load and Resistance factor design of American Institute of Steel Construction) in which the effect of warping is also taken into account. Ant colony optimization technique is used to obtain the solution of the design problem. A number of space frame examples are designed by the algorithm developed in order to demonstrate the effect of warping in the optimum design.