An optimal design method for low-impact development (LID) facilities based on the hydrodynamic model and genetic algorithm-assisted decision-making

The construction of low-impact development (LID) facilities has become an effective means to control urban waterlogging, but there is still a lack of scientific methods to achieve its accurate and reasonable planning and design. In this work, a high-precision hydrodynamic model was used to evaluate...

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Bibliographic Details
Published in:Water policy 2023-04, Vol.25 (4), p.313-337
Main Authors: Zhang, Wenqing, Hou, Jingming, Shen, Tengfei, Zhang, Ye, Li, Donglai, Wang, Jian, Zhang, Jianqi
Format: Article
Language:English
Subjects:
Algorithms
assisted decision-making
Construction
Construction costs
Construction planning
Costs
Decision making
Design
Design optimization
Design techniques
Finite volume method
genetic algorithm
Genetic algorithms
hydrodynamic model
Hydrodynamics
Hydrology
Land use
Law
low-impact development (lid) facilities
Methods
optimal design
Optimization
Rain
Runoff
Simulation
Surface water
Urban planning
Urbanization
Viscosity
Waterlogging
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Summary:The construction of low-impact development (LID) facilities has become an effective means to control urban waterlogging, but there is still a lack of scientific methods to achieve its accurate and reasonable planning and design. In this work, a high-precision hydrodynamic model was used to evaluate the construction effect of each LID facility scheme, and the fitted functional relationship was used to describe the law between the LID facility construction area and the construction effect. Finally, a genetic algorithm was used to automatically optimize the best LID facility construction scheme. Applying this method to the actual urban LID facility planning and construction, the optimal solution law is that the construction effect of single and combined LID facilities increases with the increase of construction cost. In the same low-cost construction scheme, the construction effect of combined LID facilities will be lower than that of single LID facilities, but with the continuous increase of construction cost, the construction effect of combined LID facilities will eventually be better than that of single LID facilities. According to this method, the decision-maker can get the optimal LID facility construction scheme to meet the actual engineering needs
ISSN:1366-7017
1996-9759
DOI:10.2166/wp.2023.158