Design For Shape Of Arch Dams Based On Complex Method

Arch dam is one kind of quite superior dam from the side of economy signification. All kinds of arch dams have been constructed in the world, especially in our country in recent years, so that the optimized research of arch dam shows more practical significance, and diversified optimized means are used in the design for shape of Arch Dams.Based on the geometrical characteristics and design requirements of concrete arch dam. the design variables, the constraint condition and objective function are determined in this thesis. The Complex Method is utilized to program in order to fulfill the optimal design for shape of concrete arch dam in the base of Fortran.Generally the geometric shape of arch dam is determined by the arch crown beam cross section and the cross section of arch loop. The cross section at crown and horizontal arch loop can been described by using some characteristic parameters reflecting geometric shape of arch dam. This paper establish a geometry model by using these characteristic parameters, and dam's volume is defined as objective function. Then the optimal model is called according to geometric restraint, stress restraint and steady condition in the optical design, the design variables are rectified and calculated repeatedly in term of restraining conditions until the dam's volume converge a minimal result finally. The final design variables corresponding to the objective function just are the most optimal answers, thus we fulfill the shape optimal design of concrete arch dam. In this paper, the arch-cantilever method consistently in four directions is used to calculate the size of stress. In some large-scale and significant engineering, the finite element method is adopted to checkout. In the practical examples we optimized double-curved arch dam with three circle centers and equal thickness according to this design notion, calculation results of the practical examples show that the design method is audio-visual and rational.Complex Method-based optimal design for shape of arch dam has verified the application value of Complex Method in the optimal design of concrete arch dam in this thesis. To sum up, this optimized method simplifies the computation process, enhances the speed of computation, and causes the optimal design of concrete arch dam to become more brief and concise.