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Multi-Objective Optimization for Orthotrpic Steel Deck Bridges  

Cho, Hyo Nam (한양대학교 토목환경공학과)
Chung, Jee Seung (동양대학교 토목환경공학과)
Min, Dae Hong (안산공과대학 토목과)
Publication Information
Journal of Korean Society of Steel Construction / v.14, no.3, 2002 , pp. 395-402 More about this Journal
Abstract
This study proposed a muti-objective optimum design method for rational optimizing of orthotropic steel deck bridges. This multi-objective optimum design method was found to be effective in optimizing multi-objective problems, considering cost and deflection functions. It may ve difficult to optimize orthotropic steel deck bridges using a conventional optimization, since the bridges have several parts and show complex structural behaviors. Therefore, the Pareto curve can be obtained by performing the multi-objective optimization for real orthotropic steel deck bridges, using the multi-level technique with excellent efficiency. A reasonable and economical design can be attained using the Parato curve in the cost and deflection functions of the bridge. Thus, more reasonable design values can be determined based on a comparison with those using a conventional design procedure.
Keywords
Multi-objective; optimization; Orthotropic bridges; Pareto curve;
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