Advances in concrete arch dams shape optimization

Âkbari, Jafar; Ahmadi, Mohammad Taghi; Moharrami, Hamid

doi:10.1016/j.apm.2011.01.020

Cited by 29 publications

(20 citation statements)

References 9 publications

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“…Therefore, optimization techniques can be efficiently utilized to achieve an optimal shape for arch dams. This optimal design can consider the conditions of the economy and safety simultaneously [1].…”

Section: Introductionmentioning

confidence: 99%

“…In these studies, the effect of arch dam-water-foundation rock interaction was neglected, and the conventional mathematical models were utilized for analysis approximation and optimization task. In recent years, the optimal shape design of arch dams considering dam-waterfoundation rock interaction subjected to earthquake loading has been developed by few researchers [1,[10][11][12][13][14]. * Corresponding author.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Hybridizing two-stage meta-heuristic optimization model with weighted least squares support vector machine for optimal shape of double-arch dams

Mahani

Shojaee

Salajegheh

et al. 2015

Applied Soft Computing

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hybridizing two-stage meta-heuristic optimization model with weighted least squares support vector machine for optimal shape of double-arch dams

Mahani

Shojaee

Salajegheh

et al. 2015

Applied Soft Computing

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“…For the right half T aR (x) = T C + (x x edR ) 2 (T AR T C ) 2 (x eR x edR ) 2 x edR < x < x eR T aR = T C x < x edR For the left half T aL (x) = T C + (x x edL ) 2 (T AL T C ) 2 (x eL x edL ) 2 x edL < x < x eL T aL = T C x < x edL (29) x edL and x edR are lengths of segments with constant thicknesses in the left and right banks, respectively ( Figure 4).…”

Section: Thickness Of Arch Dammentioning

confidence: 99%

“…The combination of Simultaneous Perturbation Stochastic Approximation (SPSA) and Particle Swarm Optimization (PSO) algorithm is introduced by Hamidian et al [28] to nd the optimal shapes of arch dams. Akbari et al [29] employed a new algorithm for geometry modeling of arch dams using Hermit cubic splines and the optimization problem solved via the Sequential Quadratic Programming (SQP) method. Takalloozadeh and Ghaemian [30] did the shape optimization of arch dams considering abutment stability with Particle Swarm Optimization (PSO) method.…”

Section: Introductionmentioning

confidence: 99%

The Shape Optimization of concrete arch dams considering stage construction

2016

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Abstract. This paper describes a methodology to develop the interface between a nite element software and optimization algorithm for optimization of concrete high arch dams. The objective function is the volume of the dam. The numbers of design variables are 31 including the thickness and upstream pro le of crown cantilever, thickness of the left and right abutments, radius of curvature of water and air faces left and right by use of polynomial curve tting and cubic spline function. The constraint conditions are the geometric shape, stress, and the stability against sliding. Initially, a program is developed in MATLAB in order to generate the coordinates of nodes; then, nite element software ANSYS is taken for modeling the geometry of dam. Finally, the optimization technique is performed by Simultaneous Perturbation Stochastic Approximation algorithm. To include dead weight of dam body, stage construction is considered. The proposed method is applied successfully to an arch dam and good results are achieved. The results indicate that the concrete volume of the optimized dam is reduced by an average of 21%. Compared with the initial shape, the time of convergence in this method is very short and the method is fairly e ective. It can be applied to practical engineering design.

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“…In recent years, numerous studies have been done on the optimization of arch dams to reduce the volume of concrete in arch dam construction. In the conducted research, the goal is to minimize the volume of used concrete in the dam body in order to reduce the cost of dam construction [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. Stress and geometric constraints are included as prerequisites for an optimal design in optimization process.…”

Section: Introductionmentioning

confidence: 99%

Multi-criteria optimization of concrete arch dams

Pouraminian

Ghaemian

2017

Scientia Iranica

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Abstract. In this study, multi-criteria shape optimization of an asymmetrical doublecurvature arch dam is presented. Simultaneous cost minimization of dam construction and maximum allowable tensile stress are investigated for an economical and safe design approach in the current study. Pareto front method was used to balance both the economy and safety of the design simultaneously, which can be di cult for both analysts and decision-makers. A non-dominated solution based on the important parameters of dam analysis and design is presented. To help decision-makers in their decision, two di erent methods are proposed. These methods for the case of an arch dam are Lombardi coe cient and equilibrium point methods. The obtained results indicate that these two methods can be helpful for designers without experience and information of previous designs.

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Advances in concrete arch dams shape optimization

Cited by 29 publications

References 9 publications

Hybridizing two-stage meta-heuristic optimization model with weighted least squares support vector machine for optimal shape of double-arch dams

Hybridizing two-stage meta-heuristic optimization model with weighted least squares support vector machine for optimal shape of double-arch dams

The Shape Optimization of concrete arch dams considering stage construction

Multi-criteria optimization of concrete arch dams

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