Effect of mutation schemes on convergence to optimum design of steel frames

Issa, H.; Mohammad, Fouad

doi:10.1016/j.jcsr.2010.02.002

Cited by 18 publications

(18 citation statements)

References 12 publications

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“…The benchmark frame adopted by Issa & Mohammad [6], as presented by Saka [5], is Issa and Mohammad adopted deflection limits of h f /300 and L f /360 for the eaves and apex, respectively, which are more stringent than the SCI deflection limits. It should be noted that the deflection limits by Issa and Mohammad were verified at the same actions as the member verification, i.e.…”

Section: Issa and Mohammadmentioning

confidence: 99%

Optimal design of long-span steel portal frames using fabricated beams

McKinstray

Lim

Tanyimboh

et al. 2015

Journal of Constructional Steel Research

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Section: Issa and Mohammadmentioning

confidence: 99%

Optimal design of long-span steel portal frames using fabricated beams

McKinstray

Lim

Tanyimboh

et al. 2015

Journal of Constructional Steel Research

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“…For this purpose software coded by Visual Basic 6.0, called design optimization with distributed genetic algorithm (DO-DGA) has been developed to conduct the optimization process. The main aspects of modification are introducing twin analogy and a state-of-art mutation scheme [7] as follows:…”

Section: Distributed Genetic Algorithmmentioning

confidence: 99%

Simplified structural analysis of steel portal frames developed from structural optimization

Issa

2012

WIT Transactions on the Built Environment

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A parametric study, based on design optimization using distributed genetic algorithm, is conducted to develop a reliable design procedure for steel portal frames. The efforts are made to modify distributed genetic algorithm in order to enhance the quality of performance and accelerate the convergence to possible optimum solutions. The modification includes defining a state-of-art mutation scheme and a reproduction procedure. Software called DO-DGA has been developed to handle the design optimization.The study can help structural designers to work out the member forces required to design the elements of steel portal frames without referring to the complicated structural analysis. Implementing the results of structural optimization by DO-DGA, graphs and tables are developed from which the designers can determine the member forces. The main variables in the parametric study of steel portal frame are the slope of pitched rafter, the applied load to the rafter, the length and height of the haunch and the span of the frame. The procedure is promising since it can bring the design optimization into a daily-use tool in design offices.

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“…The application of genetic algorithm (GA) for optimizing hot-rolled steel portal frame buildings was considered in the literature [8][9][10][11][12]. The robustness and reliability were successfully achieved through a number of runs.…”

Section: Introductionmentioning

confidence: 99%

Design Optimization of Long-Span Cold-Formed Steel Portal Frames Accounting for Effect of Knee Brace Joint Configuration

et al. 2017

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Abstract:The application of cold-formed steel channel sections for portal frames becomes more popular for industrial and residential purposes. Experimental tests showed that such structures with long-span up to 20 m can be achieved when knee brace joints are included. In this paper, the influence of knee brace configuration on the optimum design of long-span cold-formed steel portal frames is investigated. The cold-formed steel portal frames are designed using Eurocode 3 under ultimate limit states. A novel method in handling design constraints integrated with genetic algorithm is proposed for searching the optimum design of cold-formed steel portal frames. The result showed that the proposed routine for design optimization effectively searched the near global optimum solution with the computational time is approximate 50% faster than methods being popularly used in literature. The optimum configuration for knee brace joint can reduce the section size of rafter and so the lighter frame could be obtained especially for long-span portal frame. The minimum weight of main frame obtained from optimization process is approximate 19.72% lighter than a Benchmark Frame used in the full-scale experimental test.

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Effect of mutation schemes on convergence to optimum design of steel frames

Cited by 18 publications

References 12 publications

Optimal design of long-span steel portal frames using fabricated beams

Optimal design of long-span steel portal frames using fabricated beams

Simplified structural analysis of steel portal frames developed from structural optimization

Design Optimization of Long-Span Cold-Formed Steel Portal Frames Accounting for Effect of Knee Brace Joint Configuration

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