Techno Press

Steel and Composite Structures   Volume 17, Number 5, November 2014, pages 705-719
Optimum design of multi-span composite box girder bridges using Cuckoo Search algorithm
A. Kaveh, T. Bakhshpoori and M. Barkhori

Abstract     [Full Text]
    Composite steel-concrete box girders are frequently used in bridge construction for their economic and structural advantages. An integrated metaheuristic based optimization procedure is proposed for discrete size optimization of straight multi-span steel box girders with the objective of minimizing the self-weight of girder. The metaheuristic algorithm of choice is the Cuckoo Search (CS) algorithm. The optimum design of a box girder is characterized by geometry, serviceability and ultimate limit states specified by the American Association of State Highway and Transportation Officials (AASHTO). Size optimization of a practical design example investigates the efficiency of this optimization approach and leads to around 15% of saving in material.
Key Words
    composite box girder; size-optimization; optimal design; cuckoo search algorithm
Centre of Excellence for Fundamental Studies in Structural Engineering, Iran University of Science and Technology, Narmak, Tehran-16, Iran.

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