A Multi-Objective Optimization Approach for Design Earth-Fill Dams Variables

Section: Article
Issue
Vol. 22 No. 2 (2025): Volume 22 Issue 2
Published
Nov 30, 2025
Pages
52-59

Abstract

The entire research study is about the optimization of design variables for an earth-fill dam utilizing multi-objective optimization approach. We have considered three variables that are related to the soil material properties which are core density, foundation Young's modulus of elasticity, and shell coefficient of permeability. A limited range of each variable is applied depending on the literature and numerical simulations are dedicated for the response of the global structure using ABAQUS program. Box-Behnken design method along with MATLAB codes with least-square method are being used to construct two surrogate models for the displacements of the earth-fill dam. Fifteen numerical models are involved in the process with the presence of non-linear equations for the objective function for the optimization process. The objective functions were for the pore water pressure and the maximum principal stress were they would be first checked for reliability by the coefficient of determination check R2. The reliability of the objective function was 100% which enhanced them to be ready for the multi-objective optimization step. The results of the optimized variables for both objective functions were determined and compared with the minimal responses of the considered models of the numerical simulations of the global structure. The optimum results of both objective functions of the earth-fill dam were determined and approved which is an indication of excellent result for the optimization of the design variables. 

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Authors

Goran H. Abdalla

Department of Mathematics, College of Science, Sulaimani University, KRG, Iraq

Ayad M. Ramadan

Department of Mathematics, College of Science, Sulaimani University, KRG, Iraq.

Nazim Abdul Nariman

Department of Civil Engineering, Faculty of Engineering, Tishk International University, KRG, Iraq

Identifiers

https://doi.org/10.33899/iqjoss.v22i2.54072
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How to Cite

Abdalla, G. . H. ., Ramadan, A. M. ., & Nariman, N. A. . (2025). A Multi-Objective Optimization Approach for Design Earth-Fill Dams Variables . IRAQI JOURNAL OF STATISTICAL SCIENCES, 22(2), 52–59. https://doi.org/10.33899/iqjoss.v22i2.54072