铁路快捷货运物理网络结构特性分析  

Structural Characteristics Analysis of Railway Express Freight Network

作　　者：王小荣 张玉召[1] 张振江 WANG Xiaorong;ZHANG Yuzhao;ZHANG Zhenjiang(School of Traffic and Transportation, Lanzhou Jiaotong University, Lanzhou 730070, China)

机构地区：[1]兰州交通大学交通运输学院,兰州730070

出　　处：《武汉理工大学学报（交通科学与工程版）》2021年第1期132-136,共5页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家自然科学基金项目资助(71761025)。

摘　　要：以目前铁路快捷货运运营资料为基础,构建一个包含219个节点、309条边的铁路快捷货运物理网络.基于复杂网络理论,计算网络节点度及度分布、聚集系数、平均最短路径长度和介数等指标,进而对网络结构特征进行研究.结果表明:铁路快捷货运物理网络度分布服从幂律分布,整个网络具有无标度网络特点;网络的低聚集性表明网络具有脆弱性,当其中的站点或线路发生意外时,将造成列车大范围的绕行甚至停运.Based on the current railway express freight operation data,a physical railway express freight network with 219 nodes and 309 edges was constructed.Based on the complex network theory,the network node degree and degree distribution,aggregation coefficient,average shortest path length and intermediate number are calculated,and then the network structure characteristics were studied.The results show that the degree distribution of railway express freight physical network obeys power law distribution,and the whole network has the characteristics of scale-free network.

关 键 词：铁路快捷货运 网络特征 复杂网络理论 幂律分布 无标度网络 

分 类 号：U212.1[交通运输工程—道路与铁道工程]