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Sponge city layout optimization multi-objective decision-making method

A multi-objective decision-making and layout optimization technology, applied in the field of sponge city layout optimization multi-objective decision-making, can solve the problems of single LID facility layout target selection, low decision-making efficiency, and difficulty in exhaustive optimization schemes, etc., to minimize rainwater runoff coefficient and maximize Environmental benefits and emission reduction effects

Inactive Publication Date: 2021-04-23
HARBIN INST OF TECH
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Problems solved by technology

[0004] Aiming at the problems of single selection of existing LID facility layout targets, low decision-making efficiency and difficulty in exhausting potential optimization schemes, the present invention provides a multi-objective decision-making method for sponge city layout optimization based on NSGA-II genetic algorithm

Method used

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  • Sponge city layout optimization multi-objective decision-making method
  • Sponge city layout optimization multi-objective decision-making method
  • Sponge city layout optimization multi-objective decision-making method

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specific Embodiment

[0076] Specific embodiment: applied to the layout optimization of city A sponge city, the steps are as follows:

[0077] (1) Determine the parameters

[0078] ■Total construction cost of LID facility

[0079] Combining with "Technical Guidelines for Sponge City Construction", "Technical Guidelines for Sponge City Construction - Construction of Rainwater System for Low Impact Development" and related actual engineering projects, determine the unit price of LID facility construction, see Table 2 for details:

[0080] Table 2 Cost setting of LID facility construction in City A

[0081]

[0082]

[0083] ■Comprehensive annual runoff coefficient of rainwater

[0084] S 0 , S 1 and S are calculated from the overall planning of City A, ψ i and ψ′ are calculated from the running results of the SWMM model. The capture ratio and runoff coefficient of LID facilities are shown in Table 3:

[0085] Table 3 Parameter table of capture ratio and runoff coefficient of LID facilitie...

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Abstract

The invention discloses a sponge city layout optimization multi-objective decision-making method, solves the problems that an existing LID facility layout is single in objective selection, low in decision-making efficiency and difficult in exhaustion of a potential optimization scheme, and belongs to the crossing field of city flood prevention and drainage, municipal engineering, environmental engineering and computer technologies. The method comprises the steps of: S1, establishing a rainwater regulation and control multi-objective decision model, determining decision variables and parameters of LID layout, and determining boundary conditions with the minimum LID facility total construction cost, the minimum rainwater annual comprehensive runoff coefficient and the maximum LID system comprehensive pollutant control rate as objective functions; and S2, solving the decision variables in the rainwater regulation and control multi-objective decision model by using an NSGAII genetic algorithm to obtain an optimal solution set of the decision variables in the rainwater regulation and control multi-objective decision model.

Description

technical field [0001] The invention relates to a multi-objective decision-making method for sponge city layout optimization based on NSGA-II genetic algorithm, which belongs to the intersection fields of urban flood control and drainage, municipal engineering, environmental engineering and computer technology. Background technique [0002] With the acceleration of urbanization, urban development has seriously damaged the water system. The rapid increase of urban impermeable surface and the decrease of soil infiltration capacity lead to the decrease of rainwater infiltration and the continuous increase of runoff. Most of the rainwater runoff can only be discharged through the rainwater pipe network, the urban water circulation system is interrupted, and the problem of urban waterlogging is becoming more and more serious . In order to solve the problem of stormwater management in the process of urbanization, the core concept of low impact development (LID) has been proposed,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/27G06F111/06
CPCG06F30/27G06F2111/06
Inventor 田禹孙会航张浩然李俐频辛传好胡昊
Owner HARBIN INST OF TECH
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