Calculation method for optimizing municipal drainage network plane layout design

Abstract

The invention discloses a calculation method for optimizing a municipal drainage network plane layout design. The calculation method is characterized by mainly comprising three steps that firstly, a construction cost fitness function which has high matching degree with drainage network assessment is constructed; secondly, an initialized population is obtained from a tree structure genetic algorithm initializing scheme based on the divide-and-conquer method; thirdly, an expanded variable population is obtained by utilizing a line-adding and circle-breaking method. The calculation method for optimizing the municipal drainage network plane layout design has the advantages that the matching degree between the constructed construction cost fitness function and the drainage network assessment is high, so a drainage network can be well planned; the tree structure genetic algorithm initializing scheme based on the divide-and-conquer method enables an initialized scheme of a tree structure to be completed rapidly, and large-scale initialization of the large-scale pipe network can be achieved; a variation algorithm of the drainage network is simpler by utilizing the line-adding and circle-breaking method, a novel pipe network planning map can be generated after each line is cut out in a circle with added lines, and variation diversity is guaranteed.

Description

technical field [0001] The invention relates to a calculation method, in particular to an optimization calculation method for the plane layout design of a municipal drainage pipe network. Background technique [0002] Urban drainage pipe network is an indispensable and important infrastructure in modern cities, and it is also a backbone project for water pollution prevention and drainage and disaster reduction. Scientific planning and design can help governments at all levels use limited funds scientifically and rationally to maximize investment benefits. [0003] The optimal design of the drainage pipe network includes two aspects: one is the optimal selection of the pipeline layout; the other is the optimal design of the pipeline parameters, that is, the pipe diameter and buried depth, when the pipeline layout is determined. Among them, the layout optimization of the drainage pipe network occupies a very important position in the planning of the urban drainage pipe networ...

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Problems solved by technology

This scheme is actually a workaround when the shortest path cannot represent the minimum investment, but obviously since only considering the shortest path cannot represent the minimum investment, then only considering the reciprocal of the minimum slope or the amount of excavation designed according to the minimum slope cannot Represents minimal investment optimization

[0008] In 2008, Luo Liming of Capital Normal University and others used parthenogenetic algorithm to study the optimization of pipe network layout in the pipe network optimization based on parthenogenetic algorithm, but the relationship between pipe diameter and buried depth was not considered in the algorithm. At the same time, due to The explanation of the algorithm complexity of the algorithm has not been reasonably solved, and the optimization scheme of the drainage network is not practically feasible

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