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Sponge city optimal layout and comprehensive benefit evaluation method

A comprehensive benefit, sponge city technology, applied in the field of sponge city optimization layout and comprehensive benefit evaluation, can solve the problems of low planning efficiency, large planning effect error, poor planning accuracy rate, etc., to achieve high accuracy, reduce errors, and high efficiency Effect

Inactive Publication Date: 2021-04-27
HARBIN INST OF TECH
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to propose a sponge city optimization layout and comprehensive benefit evaluation method for the relatively prominent problems of low planning efficiency, poor planning accuracy and large planning effect errors in the existing sponge city planning

Method used

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  • Sponge city optimal layout and comprehensive benefit evaluation method
  • Sponge city optimal layout and comprehensive benefit evaluation method
  • Sponge city optimal layout and comprehensive benefit evaluation method

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specific Embodiment approach 1

[0047] Specific implementation mode one: refer to figure 1 Describe this embodiment in detail, a kind of sponge city optimization layout and comprehensive benefit evaluation method described in this embodiment includes the following steps:

[0048] Step 1: Establish decision variables with green roof area, permeable pavement area, concave green area, bioretention pond area, grass planting ditch area and rain garden area as decision variables, total construction cost of LID facilities, rainwater annual comprehensive runoff coefficient and LID system The multi-objective decision-making model of rainwater regulation with the objective function of comprehensive pollutant control rate, and then solve the multi-objective decision-making model of rainwater regulation with the constraints of facility construction area and annual comprehensive runoff coefficient of rainwater to obtain the optimal solution set;

[0049] Step 2: Scoring all the judgment indicators in the optimal solution...

Embodiment

[0084] 1. Multi-objective decision-making model to find the optimal solution set

[0085] Using the NSGA-II algorithm for multi-objective optimization, a set of non-worst solution sets that coordinate the three objectives of construction cost, rainwater runoff coefficient, and comprehensive pollutant removal rate can be obtained. Such as image 3 shown.

[0086] 2. AHP to determine the optimal solution

[0087] (1) Build a judgment matrix

[0088] The expert scoring method is used to score each judgment index (total construction cost of LID, annual comprehensive runoff coefficient and comprehensive pollutant control rate) to form a pairwise element comparison matrix. See Table 2 for the selected values ​​of the judgment matrix for the comprehensive evaluation of the LID system scheme.

[0089] Table 2 Judgment matrix scoring criteria (ai, j)

[0090]

[0091] (2) Calculate the weight coefficient

[0092] Calculated according to the judgment matrix, the weight coeffici...

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Abstract

The invention discloses a sponge city optimal layout and comprehensive benefit evaluation method, relates to the technical field of environmental engineering, and aims to solve the problems of relatively outstanding planning efficiency, poor planning accuracy and large planning effect error in existing sponge city planning. Decision variables selected by the project scientifically and reliably includea green roof area, a permeable pavement area, a concave green land area, a bioretention pond area, a grassed swale area and a rainwater garden area respectively; and the objective functions comprise an LID facility total construction cost function, a rainwater annual comprehensive runoff coefficient function and an LID system comprehensive pollutant control rate function. A decision maker can select decision schemes under different target preferences by comprehensively considering factors such as cost, water quantity and water quality according to main problems and contradictions in a transformation area, and a decision thought is provided for constructing various LID facilities according to local conditions.

Description

technical field [0001] The invention relates to the technical field of environmental engineering, in particular to a sponge city optimization layout and comprehensive benefit evaluation method. Background technique [0002] In August 2019, the Ministry of Housing and Urban-Rural Development issued the "Evaluation Standards for Sponge City Construction", marking an important step in the creation of sponge cities in my country. A large number of studies and practices conducted by scholars at home and abroad on the construction of sponge cities have shown that as a comprehensive ecological project, the transformation effect of sponge cities should be considered from multiple aspects to meet the requirements of multi-dimensional engineering design goals in reality. However, the current LID system The optimization target selection is relatively simple; in addition, there are many alternatives for LID system optimization, and the influencing factors are complex. Each scheme has it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q10/04G06Q50/26
CPCG06Q10/04G06Q10/06393G06Q50/26Y02A20/152
Inventor 李俐频孙会航张浩然田禹陈星马丽娜
Owner HARBIN INST OF TECH
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