给水管网的直接优化设计方法

Direct Optimal Design Method of Water Network

根据给水管网的水力特性，提出了以管段压力及管段流量为求解变量的给水系统优化设计目标函数，并采用优化效果明显的简约梯度法进行计算，结合罚函数法提出了目标函数变换技术，直接解决了求解管径标准化的难题，经实例验证计算效率高，可靠性强。

In accordance with the hydraulic characteristics of water network, this paper advances the objective function of optimal design regarding pipe flow and pipe pressure as unknown variables. On the basis of specific property of the linear constraints, the obviously effective Reduced Gradient Method was used in the subject. By the transform of objective function, the problem of standardizing diameter was solved successfully. It proves that the technique is practical by some examples.