基于复杂网络的城市轨道交通线网评价与优化

摘要

This paper analyzes the urban rail transit network based on the complex network theory and evaluates rail transit network by means of an established complex network model to compute and analyze the eigenvalues. With reference to the planning rail transit network in Wuhan to the year of 2021, the most stressful traffic stations and intervals of the network are determined, and optimization programs are evaluated and compared. The conclusions are as follows. The key stations in rail transit network include not only multi-line transfer stations, but stations with large betweeness. Easing traffic pressure of key stations can not be simply fulfilled by adding more lines, but should be done by increasing peripheral passage connections with the consideration of the entire network structure. Rather than only pursuing network efficiency, the passenger flow capacity of single stations and intervals from the perspective of network structure should be taken into account when constructing the network.%采用复杂网络理论对城市轨道交通线网进行分析，建立复杂网络模型，进行特征值计算分析，对轨道交通网络进行评价。以武汉市规划2021年轨道交通线网为例，确定网络中交通压力最大的车站和区间，提出优化方案并进行评价比较。研究结论为：在轨道交通线网中重要的车站不仅是多线换乘站，还应包括介数较大的车站；疏解重要站点客流压力不能简单增加线路，而应考虑整个网络结构，增加外围的通道连接；在构筑网络时，不能仅追求网络效率，更应从网络结构的角度考虑单个车站或区间的客流承受能力。