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本文探讨了拱坝多目标优化的模型、方法与应用 .提出了以经济性指标 (如坝体方量 )和安全性指标(应力水平、强度失效概率、高应力区范围等 )为优化的多个目标函数 ,导出了坝体失效概率的算式 .优化方法采用理想点法 ,并通过对各分目标的权系数调整 ,提供能反映设计者偏爱的多个解方案 .文中首次探讨了拱坝优化的柔性建模方式 ,并通过程序予以实现 ,使优化模型的三大要素 ,不再如传统那样完全被编程固定 ,而仅由编程提供变量、目标和约束的基本要素 ,在设计中通过交互手段建立不同含义的优化模型 ,从而实现建模的柔性化 .初步的工程应用所得的成果合理 ,数据有一定规律 ,表明文中提出的模型与方法是可行的 .
In this paper, the model, method and application of arch dam multi-objective optimization are discussed, and the multi-objective optimization model, method and application of arch dam are proposed. The multi-objective optimization model, method and application of arch dam are proposed. Objective function and derives the formula of failure probability of dam body.The optimization method adopts the ideal point method and provides multiple solutions that can reflect the designer’s preference by adjusting the weight coefficient of each sub-target.In this paper, , And through the program to achieve, so that the optimization of the three elements of the model is no longer as completely traditional programming as fixed, but only by programming to provide variables, targets and constraints of the basic elements in the design through interactive means Establish the optimization model with different meanings so as to realize the flexibility of modeling.The results of the preliminary engineering application are reasonable and the data have certain rules, which shows that the model and method proposed in this paper are feasible.