中国铁路网的可达性分析

Accessibility Analysis of Chinese Railway Network

基于铁路网的特征,利用双层网络模型对中国铁路网进行建模。在模型的两个层面上分别研究中国铁路网的可达性:物理层可达性、逻辑层可达性。由于两个层面上的指标侧重点不同,导致结果存在明显的差异。物理网络层面上,可达性较好的节点主要分布在中部和东部地区;逻辑网络层面上,可达性较好的节点主要分布在经济发达、客流量大的城市。结果的差异说明了在利用复杂网络理论研究实际的复杂系统时,结合实际系统的基本特征能够使分析更加合理、准确。

Based on the characteristics of the railway network, we use a layered complex network modeling the Chinese railway network and analysis the accessibility of Chinese railway network on the two layers of the model： physical layer and logical layer respectively. Since the emphasis is different, there are significant differences in the results. On physical layer, the nodes which have good accessibility mainly distributed in Chinese central and eastern region; on logical layer, the nodes which have good ac- cessibility is mainly distributed in the developed cities where passenger flow is large. The difference illustrated that when use complex network theory studying the actual complex system, combined with the basic characteristics of the actual system can make the analysis more reasonable and accurate.