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Structural optimization is a structure to meet the stability, stress, crack constraints, the optimal or cost (of quantities) minimum design of engineering structures. It not only can reduce the weight of the structure and material costs, and can improve the structural strength, stiffness, vibration characteristics, buckling performance is important research directions in the field of design and manufacture of computational mechanics and modern. The huge general investment as the Water Resources and Hydropower Engineering serious consequences after the crash, so the application of modern structural optimization technology to optimize not only save a lot of money for the state, and can provide a guarantee for the project itself. In this paper, the analysis of the optimization of the history of technology development and application in water conservancy and hydropower project, and compare their advantages and disadvantages, application of the hot spots of the optimization method at this stage - ANSYS parametric design language (APDL) and genetic algorithms (GA), and applied to water conservancy and hydropower project, due to the shortcomings of the method itself, makes this method iteration slower, looking for a fast and accurate optimization method, in order to address this shortcoming, the study of the genetic algorithm and its propose a new optimization methods - genetic finite element optimization method, the Practice has proved that this method is feasible and effective. This article is mainly to do the following main tasks: using ANSYS Parametric Design Language (APDL), the body shape of the gravity optimization study, and the development of corresponding optimization program. 2, gravity dam shape optimization and genetic algorithm based on ANSYS parametric design language (APDL) gravity dam Shape optimization by means of large-scale finite element software ANSYS and intelligent algorithms (genetic algorithms). 3, the determination of the gravity dam foundation and dam elastic modulus is a very complex issue, their size directly affect the stability and safety of the dam, is a prerequisite to ensure dam safety. The elastic modulus of gravity inversion analysis using ANSYS parametric design language (APDL). 4, flexible hydraulic flap gate is a new gate form, by means of a rubber bag was filled with powerful water pressure propped gate play a the weir impoundment of purpose, gates open through the gradual release of which water pressure, like a flip dumping trend is called \On the basis of the existing model, the use of advanced optimization techniques to its optimization studies. 5, and finally, the summary of this research work, analysis of the inadequacies of the study and future research prospects.
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