Optimizing the Weight of 3D Steel structures by spectrum dynamic analysis and soft computing algorithm

Document Type : Research Article

Authors

1 Assistant Prof, dept. Civil Engineering, K. N. Toosi University of Technology, Tehran, Iran

2 K. N. Toosi University of Technology

Abstract

Regarding the importance of the optimized and economical design of structures, reducing the total weight of structures has been considered. This approach leads to a decrease in the cost of building projects. In another point of view, reducing the weight of structures will be associated with decreasing the dimension of different elements so it can increase the likelihood of strength failure in the structures. This paper intends to apply the soft computing technique, firstly, to bring a new algorithm for minimizing the weight of structures with respect to satisfying different technical constraints and secondly, to improve the speed of answer. To achieve the second goal, various methods including the modified genetic algorithm, the modified ant colony, and artificial neural network, were applied and tested. Some performance indicators such as speed of answer, accuracy, etc. were selected to compare the output of those mentioned approaches with traditional calculations. The obtained results showed that the modified ant colony algorithm has better performance in terms of speed of answer and accuracy. While several previous investigations have been looked at the problem of structure weight optimization from a two-dimensional perspective, this paper developed three-dimensional modeling by applying the spectrum dynamic analysis. Four types of structures were examined to bring comprehensive results.

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Main Subjects

References

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Amirkabir Journal of Civil Engineering
Volume 52, Issue 4
July 2020
Pages 889-918

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