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Optimum Structural Design of Sinusoidal Corrugated Web Beam Using Real-valued Genetic Algorithm  

Shon, Su-Deok (한국기술교육대학교 건축공학부)
Lee, Seung-Jae (한국기술교육대학교 건축공학부)
Publication Information
Journal of Korean Society of Steel Construction / v.23, no.5, 2011 , pp. 581-593 More about this Journal
Abstract
The underlying advantages of using thin-walled corrugatedwebs instead of plate girders with stiffeners are the elimination of instability problems associated with buckling of the thin-walled flat plate, and elimination of the need for transverse stiffeners, which alsoresults in economic advantages. This paper focuses on two aspects related to the structural design technique forsinusoidal corrugated web steel beams, and the optimum design of the beams using real-value genetic algorithms. The structural design process and design variables used in this optimization werecomposed with EN 1993-1-5, DASt-R015 standard and Pasternak et al. (2004), and the valid design capacity of shear buckling of the standards were compared. For the optimum structural design, the objective function, presented as the fullweight of the sinusoidal corrugated web beams, and the slenderness, member forces, and maximum deflection of the beam, were considered constraints. Finally, the simple beam under the uniform load was adopted as a numerical example, and the effective probability parameters of the genetic operators were considered to find the global minimum point.
Keywords
sinusoidal corrugated web; shear buckling; optimum design; real-valued GA; out-breeding;
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Times Cited By KSCI : 1  (Citation Analysis)
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