Urban rainwater drainage system automatic optimization method based on SWMM and MATLAB

Abstract

The invention discloses a city rainwater drainage system automatic optimization method based on SWMM and MATLAB, and the method comprises the steps: firstly completing the building of a research region SWMM plot model according to basic data, and generating a model input file in an inp format; performing secondary development on the SWMM, and after an interface function is written in, generating a DLL format file in a VS2013 editor and used for MATLAB calling; using MATLAB programming again to realize the coupling of the particle swarm optimization algorithm and the SWMM; and finally, performing iterative optimization through a particle swarm algorithm, finding an optimization design scheme enabling the node overflow amount of the research area to be minimum, and achieving automatic optimization of the urban rainwater drainage system. According to the method, software programming is used for replacing manual input, an optimization algorithm is used for replacing manual self-simulation of an optimization scene, and the LID facility and the rainwater pipe network are optimized at the same time, so that the optimal solution can be quickly and accurately found, and the optimization integrity can be considered.

Description

technical field [0001] The invention belongs to the technical field of layout optimization of urban rainwater pipe networks and LID facilities, and relates to an automatic optimization method for urban rainwater drainage systems based on SWMM and MATLAB. Background technique [0002] In recent years, with the rapid development of cities, the hardening rate of the underlying surface has increased rapidly, and the phenomenon of urban "waterlogging" has become more and more serious. Sponge cities provide an effective way to alleviate urban waterlogging. Regardless of whether it is for new urban planning or the renovation of old urban areas, there are still problems in the formulation and optimization of schemes. At present, numerical models are mostly used for related optimization research. However, these optimization studies mainly use the scenario analysis method, through self-drawing several optimization schemes, combined with model calculations, and selecting a better optim...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a SWMM-based rainwater pipe network and LID facility optimization method, which solves the problems in the prior art that rely too much on the actual experience of designers and cannot guarantee to find the optimal solution, and the manual modification and input are cumbersome and complicated.

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