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strategy is presented that is shown to be an effective means of enhancing the dissimilarity of the solutions in each generation of the GA. Thus, population diversity is maintained and premature convergence is reduced significantly. Through benchmark examples, it is shown that the efficient GA proposed generates optimal solutions more consistently. A parametric study was carried out, and the results included. They show significant variation in the optimal topology in terms of pitch and frame spacing for a range of typical column heights. They also show that the optimized design achieved large savings based on the cost of the main structural elements; the inclusion of knee braces at the eaves yield further savings in cost, that are significant.
|Number of pages||10|
|Journal||Steel and Composite Structures|
|Publication status||Published - Nov 2013|
- cold-formed steel
- portal frames
- real-coded genetic algorithm
Design optimization of cold-formed steel portal frames taking into account the effect of building topologyPhan, D., Lim, J., Sha, W., Siew, C., Tanyimboh, T., Issa, H. & Mohammad, F., 2013, In : Engineering Optimization. 45, 4, p. 415-433 19 p.
Research output: Contribution to journal › Article
Jul 2013, In : Journal of Constructional Steel Research. 86, p. 74–84 11 p.
Research output: Contribution to journal › ArticleOpen AccessFile19 Citations (Scopus)668 Downloads (Pure)
25 Oct 2012, Proceedings of the 21st International Specialty Conference on Cold Formed Steel Structures. p. 485-497 13 p.
Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book