基于 SWMM 的雨水管网韧性优化设计研究

Study on Optimization Design of Rainwater Pipe Network Toughness Based on SWMM

摘要:

以提升雨水管网经济性和管网韧性为目标，实际工程规范为约束，管径和检查井井底高程为决策变量建立雨水管网多目标优化模型，并基于PlatEMO多目标优化平台，利用MATLAB将SWMM嵌入寻优过程，选择NSGA-II、NSGA-III、AGE-MOEA 3种优化算法求解，对比解集质量和求解速度。以西安市某区域为研究案例，进行模型验证。研究结果表明：（1）优化模型所得的排雨水方案可以满足不同工程需求；（2）AGE-MOEA算法解集质量最高，NSGA-III求解速度相对较快；（3）优化方案可以同时满足管网经济性和韧性的要求。

Abstract:

A multi-objective optimization model for rainwater pipe networks is established by taking the enhancement of the economy and toughness of rainwater pipe network as the objective, the practical engineering specifications as the constraint, and the pipe diameters and the bottom elevation of manhole as the decision variable. Based on the PlatEMO multi-objective optimization platform, MATLAB is used to embed SWMM into the optimizing process. Three optimization algorithms of NSGA-II, NSGA-III and AGE-MOEA are selected to solve and compare the solution set quality and the solving speed. Taking an area in Xi'an as a research case, the model is validated. The research results show that (1) the rainwater drainage scheme obtained from the optimization model can meet the different engineering requirements. (2) The AGE-MOEA algorithm has the highest solution set quality, and NSGA-III has a relatively fast solving speed. (3) The optimization scheme can simultaneously meet the requirements of pipe network economy and toughness.