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COST OPTIMIZATION OF CASTELLATED BEAMS USING CHARGED SYSTEM SEARCH ALGORITHM | ||
| Iranian Journal of Science and Technology Transactions of Civil Engineering | ||
| شناسنامه علمی شماره، دوره 38، C1+، خرداد 2014، صفحه 235-249 اصل مقاله (241.81 K) | ||
| شناسه دیجیتال (DOI): 10.22099/ijstc.2014.1866 | ||
| چکیده | ||
| Castellated beam is formed by modifying a standard rolled beam through creating a regular pattern of holes in the web. The main goal of manufacturing these beams is to increase the moment of inertia and section modulus, which results in greater strength and rigidity. In this study, the charged system search algorithm is used for obtaining the solution of the design problem. Here, castellated beams with hexagonal and circular openings are considered as design problems. The minimum cost is taken as the design objective function. The design methods used in this study are consistent with BS5950 part 1 and 3 and Euro code 3. A number of design examples are considered to demonstrate the efficiency of the presented algorithm. It is observed that optimization results obtained by the ECSS algorithm for three castellated beams with hexagonal openings have less cost in comparison to the cellular beams. Also, the results of these examples illustrate the capability of the ECSS algorithm in finding the optimum solution in less number of iterations. | ||
| کلیدواژهها | ||
| Castellated beams؛ cellular beams؛ steel structures؛ design optimization؛ charged system search (CSS) | ||
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