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    Optimal design of cold-formed steel portal frames for stressed-skin action using genetic algorithm

    Access Status
    Fulltext not available
    Authors
    Phan, Thanh Duoc
    Lim, J.
    Tanyimboh, T.
    Wrzesien, A.
    Sha, W.
    Lawson, R.
    Date
    2015
    Type
    Journal Article
    
    Metadata
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    Citation
    Phan, D. and Lim, J. and Tanyimboh, T. and Wrzesien, A. and Sha, W. and Lawson, R. 2015. Optimal design of cold-formed steel portal frames for stressed-skin action using genetic algorithm. Engineering Structures. 93: pp. 36-49.
    Source Title
    Engineering Structures
    DOI
    10.1016/j.engstruct.2015.02.037
    ISSN
    1873-7323
    School
    Curtin Sarawak
    URI
    http://hdl.handle.net/20.500.11937/21620
    Collection
    • Curtin Research Publications
    Abstract

    This paper describes a stressed-skin diaphragm approach to the optimal design of the internal frame of a cold-formed steel portal framing system, in conjunction with the effect of semi-rigid joints. Both ultimate and serviceability limit states are considered. Wind load combinations are included. The designs are optimized using a real-coded niching genetic algorithm, in which both discrete and continuous decision variables are processed. For a building with two internal frames, it is shown that the material cost of the internal frame can be reduced by as much as 53%, compared with a design that ignores stressed-skin action.

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