Grassed swale design parameter optimization method based on response surface method

A technology of response surface method and design parameters, which is applied in computing, electrical digital data processing, special data processing applications, etc., can solve the problems of not having clear important theoretical basis and technical guidance for parameter design, and achieve flexible design, resource saving, and applicable wide range of effects

Inactive Publication Date: 2019-12-17
TIANJIN UNIV
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Problems solved by technology

[0004] At present, the research on Zhicao Ditch is mainly to study the design and calculation methods, construct and examine the hydrological control effect of actual sponge measures, and discuss the benefits, costs and effects involved in the sponge construction process, but there is no clear parameter design in the construction of sponge measures. The important theory Basis and Technical Guidance

Method used

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  • Grassed swale design parameter optimization method based on response surface method
  • Grassed swale design parameter optimization method based on response surface method
  • Grassed swale design parameter optimization method based on response surface method

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Embodiment 1

[0039] This case takes Zhicaogou as the research object, and the catchment area is 200m 2 The hardened underlying surface (pavement). As shown in Figure 4, the method steps of the present invention are as follows:

[0040] 1. Index selection

[0041] In this case, the runoff control rate is selected as the optimization index. Among them, the runoff control rate of the sponge measure is calculated in the model according to the following formula: η=1-(VQue / Vre), where VQue is the overflow amount, and Vre is the total runoff.

[0042] 2. Parameter determination

[0043] (1) In this case, the SWMM model is used to simulate the Zhicao ditch, and its hydrological replacement model is constructed. The parameters to be set for simulating grass planting ditch in this SWMM include area, width, water storage depth, longitudinal slope, Manning coefficient, infiltration parameters (Horton model: maximum infiltration rate, minimum infiltration rate, infiltration attenuation coefficient)...

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Abstract

The invention belongs to the technical field of drainage systems, and particularly relates to a grassed swale design parameter optimization method based on a response surface method. The method comprises the steps of selecting indexes; determining parameters; carrying out single factor valuing; obtaining parameter values; realizing scheme formation; simulating efficiency; analyzing a result; optimizing parameters; and determining optimal scheme. More reasonable grass planting ditch parameters can be selected more conveniently and quickly during actual engineering planning; a hydrological modelis combined with a response surface method; single-factor simulation is performed on a plurality of design parameters of the grassed swale on a hydrological model platform; reasonably selecting a plurality of design parameters as influence factors according to a runoff control rate, a grassed swale design guide, a model parameter selection range and the like; carrying out multi-factor and multi-level response surface design, finally, obtaining a function between a multivariate quadratic equation fitting influence factor and a response value, seeking an optimal design parameter combination byanalyzing a regression equation, and solving the multivariate problem.

Description

technical field [0001] The invention belongs to the technical field of drainage systems, and in particular relates to a design parameter optimization method for grass planting ditch based on the response surface method. Background technique [0002] The grass-planting ditch refers to a drainage system with landscape performance in which vegetation is planted in the ditch. Through the infiltration and filtration of the grass-planting ditch and the interception of plants, the peak flow of surface runoff, the total amount of runoff, and the content of pollutants can be reduced. After continuous improvement in its design and research, it has gradually become an effective means for people to control and utilize urban rain and flood. The earliest grass-planting ditch was a vegetation depression through which surface runoff passed. It was found that the flow of runoff would decrease accordingly after passing through the vegetation depression. Later, people began to research and de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 冯玉杰陈洁何伟华袁晓乐刘淑娟曹梦佳牛娇娇
Owner TIANJIN UNIV
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