Research on the Regional Layout Planning of General Airports for Multi-dimensional Functional Demand
With the development of the low-altitude economy,many provinces have released general airport lay-out plans,and the construction of general airports has reached its climax.Reasonable layout and functional posi-tioning of general airports are the foundation for the development of the general aviation industry.However,there is still a lack of methods for generating scientific and reasonable airport layout.Therefore,it is urgently nec-essary to develop a scientific method for layout planning and functional positioning of general airports.More-over,the existing research has not fully considered the spatial diversity of multi-dimensional demand of general airports,resulting in a one-sided general airport layout plan which is decoupled from functional positioning.To address these problems,this paper aims to construct a research framework for multi-dimensional demand analy-sis,layout planning,and functional positioning,and generate layout planning of general airports based on multi-dimensional functional demand.First,the demand for transportation and non-transportation functions of general airports is a systematically analyzed.Combining with real data,the impact index system for transportation and non-transportation demand is constructed based on an econometric model and characteristics of non-transporta-tion functions.Then,a combined weighting method is used to overlay the impact indicators to obtain the distribu-tion of regional transportation and non-transportation demand.Second,the improved Polygon Intersection Point Set method is employed to discretize the continuous facility sitting problem based on multi-dimensional function-al demand coverage assumptions.After that,the multi-dimensional functional demand-oriented general airport layout planning models are constructed.The NSGA-Ⅲ algorithm is designed to solve the multi-objective model.Finally,the k-means clustering-based general airport functional positioning model is proposed.An example re-gion is selected to carry out general airport layout planning.The results show that in the near-term planning,when the number of general aviation airports increases by 29,the regional transportation demand coverage reach-es 58.78％and the non-transportation demand coverage reaches 66.17％.In the long-term planning,when the number of general aviation airports increases by 64,the transportation demand coverage reaches 89.20％and the non-transportation demand coverage reaches 97.57％,which basically achieves a complete coverage of the multi-dimensional functional demand in the region.The 1h commuting area share of general aviation in the region is in-creased from the current 28.73％to 60.63％and 78.35％in the near-term and long-term planning,respectively.Finally,the grade and function of general aviation airports are determined based on a long-term layout scheme,which ensures the compatibility between functional positioning and the multi-dimensional functional demand dis-tribution,providing a theoretical basis for the planning and construction of general aviation airports.
air transportationairports configuration optimizationmulti-dimensional Functional demandPoly-gon Intersection Point Set methodcontinuous facility locationmaximal covering modelNSGA-Ⅲ algorithmfunctional positioning
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