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Geomechanics and Engineering Volume 9, Number 6, December 2015 , pages 709-727 DOI: https://doi.org/10.12989/gae.2015.9.6.709 |
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Optimal design of homogeneous earth dams by particle swarm optimization incorporating support vector machine approach |
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Zeinab Mirzaei, Abolfazl Akbarpour, Mohsen Khatibinia and Abbas Khashei Siuki
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| Abstract | ||
| The main aim of this study is to introduce optimal design of homogeneous earth dams with oblique and horizontal drains based on particle swarm optimization (PSO) incorporating weighted least squares support vector machine (WLS-SVM). To achieve this purpose, the upstream and downstream slopes of earth dam, the length of oblique and horizontal drains and angle among the drains are considered as the design variables in the optimization problem of homogeneous earth dams. Furthermore, the seepage through dam body and the weight of dam as objective functions are minimized in the optimization process simultaneously. In the optimization procedure, the stability coefficient of the upstream and downstream slopes and the seepage through dam body as the hydraulic responses of homogeneous earth dam are required. Hence, the hydraulic responses are predicted using WLS-SVM approach. The optimal results of illustrative examples demonstrate the efficiency and computational advantages of PSO with WLS-SVM in the optimal design of homogeneous earth dams with drains. | ||
| Key Words | ||
| homogeneous earth dams; oblique and horizontal drains; particle swarm optimization; weighted least squares support vector machine | ||
| Address | ||
| (1) Zeinab Mirzaei, Abbas Khashei Siuki: Department of Water Resources Engineering, University of Birjand, Birjand, Iran; (2) Abolfazl Akbarpour, Mohsen Khatibinia: Department of Civil Engineering, University of Birjand, Birjand, Iran. | ||