基于通行能力分析的路网分维数  

Highway network fractal dimension based on the analysis of the traffic capacity

作　　者：李清波[1] 何石坚 匡姣姣 

机构地区：[1]长沙理工大学交通运输工程学院,湖南长沙410004

出　　处：《交通科学与工程》2014年第3期70-75,共6页Journal of Transport Science and Engineering

摘　　要：针对路网分维数不能描述包含各个等级公路路网整体特性的局限性,以通行能力分析为纽带,建立起公路网中各等级公路之间的联系,对工程实践中的路网分维数计算过程进行了一定的改进。并根据湖南省部分地区的公路网现状进行试算,分别得到了各地区基于通行能力分析的路网分维数试算结果。分析结果表明:用基于通行能力分析的路网分维数对路网整体特性进行分析,具有一定的可行性;结合通行能力分析的路网分维数可以定性地描述某一地区公路网发展和社会经济发展的必然联系;某些因素给不同地市公路网所造成的差异(如:地理位置),可通过对各地市的路网分维数试算结果的定量比较得以体现。Focused on the limitation that highway network fractal dimension cannot be applied to describe features of highway network containing all levels but describe that of single level highway network in a given area,the analysis of traffic capacity is served as the link for establishment of connections between each grade highway in the network.Then,the calculation process of highway network fractal dimension is improved in engineering practice to gain trial results of highway network fractal dimension based on the analysis of the traffic capacity in each area relying on the trial of highway network＇s current situation in part areas in Hunan Province.The results show that using highway network fractal dimension based on the analysis of the traffic capacity,it is feasible to analyze highway network＇s general features.It＇s necessary to combine highway network with economic development,which can be depicted qualitatively.The differences caused by factors（such as geographical position）among highway network can be reflected by quantitative comparison of trial results of highway network fractal dimension in every city.

关 键 词：道路工程 路网分维数 通行能力分析 公路网评价 定量比较 

分 类 号：U412.1[交通运输工程—道路与铁道工程]