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管网在给水工程中占很大比重,经济、可靠和合理地进行管网设计无疑十分重要。管网设计计算的传统方法是按一般经济流速确定管径的方法,这种设计计算方法一般仅可能是一组可行设计参数的组合,而难能满足整个管网系统费用最低的优化设计的要求。本文介绍了应用数学规划中的非线性规划与线性规划理论进行单水源给水管网优化设计的一般方法、数学模型和设计计算举例。实践证明,应用这种方法对管网进行设计,可使管径合理,费用降低,经济效益提高。
Pipe networks account for a large proportion of water supply projects, and it is undoubtedly important to carry out pipe network design economically, reliably and reasonably. The traditional method of pipe network design calculation is to determine the pipe diameter according to the general economic flow rate. This design calculation method is generally only a combination of a set of possible design parameters, and it is difficult to meet the requirements of the optimal design for the lowest cost of the entire pipe network system. . This paper introduces the general methods, mathematical models and design calculations for optimal design of a single-water source water supply network using nonlinear programming and linear programming theory in mathematical programming. Practice has proved that applying this method to the design of the pipe network can make the pipe diameter reasonable, the cost reduced, and the economic benefit improved.