雨水管网是城市排涝工程体系的重要组成部分，如何科学经济地对现状雨水管网进行优化改建，是提升管网排水能力、缓解城市内涝的关键问题之一。建立以降低造价和工程量以及提高排水能力为目标的管网改建多目标优化模型，以管径改建值作为变量，利用NSGA-II多目标优化算法求解；基于Java运行平台，将SWMM源代码嵌入寻优过程，实现程序自动调用水力学模拟软件，得到快速获取可行解的新途径；将新建模型应用于工程实例，应用结果表明，优化模型在保证工程合理性要求的前提下，可快速获得多个经济可行的组合改建方案。研究对于雨水管网改建工作等具有借鉴意义。

Rainwater pipeline network is an important part of urban drainage engineering system. Optimal reconstruction of the pipeline network scientifically and economically is the key to improving the capacity of its drainability and effectively relieving urban waterlogging disasters. In order to achieve this goal, a pipeline network optimal reconstruction model based on multi-objective optimization (NSGA-II) was established in this paper. There were three objective functions in this optimal reconstruction model including construction cost, drainability, and quantities. In addition, by invoking program source code, the paper realized automatically executing SWMM for hydraulics simulation. At last, the paper took a case for application whose results showed that this optimal reconstruction model could get feasible reconstruction plans and would have some referential value.

中央高校基本科研业务费专项（1102-851037）；国家自然科学基金（51209032）