机场群可达性空间布局优化模型

Spatial Layout Optimization Model of Multi-airport System Based on Accessibility

机场群体系利用不均衡、不充分问题正成为交通规划领域和重大工程管理领域急需解决的难题。合理规划机场群体系结构和空间分布,是打破机场群总体服务质量瓶颈、提高运营效率的有效方式。对此,建立基于可达性的机场群空间布局模型,并依据模型的非线性特征,提出了基于粒子群算法的快速求解方法。同时,考虑需求分布的聚集性和随机性,以及不同类型机场覆盖范围、建设费用和保障能力,通过MATLAB仿真模拟来分析机场群体系空间布局对总体服务质量的影响,为提高机场群体系服务质量提供支撑。案例研究结果表明,利用机场群体系空间布局模型,可快速优化机场群空间分布,提高机场群服务的总体满意度,且机场群体系保障需求总量和满意度随着最大投资总额增加而增加,但上升趋势逐渐变缓。

The unbalanced and inadequate utilization of multi-airport systems becomes an urgent problem in the fields of transportation planning and major engineering management.Rational planning of the constituents and spatial distribution of a multi-airport system is an effective way to remove the bottleneck of the overall service quality and improve the operational efficiency.Therefore,a spatial layout model of the multi-airport system based on accessibility was established,and according to the nonlinear characteristics of the model,a fast solution method based on particle swarm optimization algorithm was proposed.Meanwhile,considering the aggregation and randomness of demand distribution,as well as the coverage scopes,construction costs and support capabilities of airports of different types,by MATLAB simulation,the paper analyzed the influence of the spatial layout of a multi-airport system on the overall service quality so as to improve the service quality of the multi-airport system.The findings of the case study show that the spatial distribution of a multi-airport system can be rapidly optimized and the overall satisfaction of service can be improved by using the spatial distribution model.In addition,the total demands and satisfaction of a multi-airport system support capability increase with the rise of the maximum total investment,but the upward trend gradually becomes slow.