Optimization design of arch dam shape with modified complex method

Li, Shouyi; Ding, Lujun; Zhao, Lijuan; Wei, Zhou

doi:10.1016/j.advengsoft.2009.01.013

Cited by 27 publications

(10 citation statements)

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“…Finally, upstream and downstream ends of the three segments are joined by circular arcs that define the correspondent faces of the central cantilever, as shown in Figure 3. Other criteria can be adopted such as adjusting polynomials of second order as functions of the height [7,9,10]. These approaches are related to theoretical optimization models and involve the use of additional parameters.…”

Section: Crown Cantilevermentioning

confidence: 99%

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An Interactive Tool for Automatic Predimensioning and Numerical Modeling of Arch Dams

Vicente

Mauro

Salazar

et al. 2017

Mathematical Problems in Engineering

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The construction of double-curvature arch dams is an attractive solution from an economic viewpoint due to the reduced volume of concrete necessary for their construction as compared to conventional gravity dams. Due to their complex geometry, many criteria have arisen for their design. However, the most widespread methods are based on recommendations of traditional technical documents without taking into account the possibilities of computer-aided design. In this paper, an innovative software tool to design FEM models of double-curvature arch dams is presented. Several capabilities are allowed: simplified geometry creation (interesting for academic purposes), preliminary geometrical design, high-detailed model construction, and stochastic calculation performance (introducing uncertainty associated with material properties and other parameters). This paper specially focuses on geometrical issues describing the functionalities of the tool and the fundamentals of the design procedure with regard to the following aspects: topography, reference cylinder, excavation depth, crown cantilever thickness and curvature, horizontal arch curvature, excavation and concrete mass volume, and additional elements such as joints or spillways. Examples of application on two Spanish dams are presented and the results obtained analyzed.

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Section: Crown Cantilevermentioning

confidence: 99%

“…Arch dams have also been considered for shape optimization, as reflected in the existing bibliography [8][9][10]. Particular emphasis has been placed on the search of optimal crown cantilever shapes and horizontal arches curvature, through different mathematical problem formulations.…”

Section: Introductionmentioning

confidence: 99%

An Interactive Tool for Automatic Predimensioning and Numerical Modeling of Arch Dams

Vicente

Mauro

Salazar

et al. 2017

Mathematical Problems in Engineering

View full text Add to dashboard Cite

show abstract

“…With the rapid increase of computer capacity, the computer-aided engineering design became the standard technique for design and optimization modelling of arch dams. The optimization process of the dam geometry and structural parameters is carried out until the dam optimal design satisfies the allowable design criteria [1][2][3][4]. The software accuracy and capacity to carry out complex structural and sensitivity analyses and fine-tuning of the dam geometry contribute to the effectiveness of the final dam shape [3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Interactive algorithm for geometric modelling double-curvature arch dams

Mirčevska¹,

Nastev²,

Hristovski³

et al. 2019

Građ materijali i konstrukcije

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“…The results indicated that the concrete volume of the arch dam optimized by the proposed cubic spline was less than the original design scheme optimized using parabolic shape. Li et al [24] used the modi ed complex method which can search for the optimal solution directly, has no special request on the condition of the objective function and constraint function, and does not need to derivate during iteration pilot calculation. Fanelli [25] showed that the degrees of freedom, which are strictly necessary to be considered in the shape optimization procedure of an arch dam, can be reduced by a judicious choice of basic model and design variables.…”

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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Optimization design of arch dam shape with modified complex method

Cited by 27 publications

References 0 publications

An Interactive Tool for Automatic Predimensioning and Numerical Modeling of Arch Dams

An Interactive Tool for Automatic Predimensioning and Numerical Modeling of Arch Dams

Interactive algorithm for geometric modelling double-curvature arch dams

The Shape Optimization of concrete arch dams considering stage construction

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