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为使交通基础设施建设更好地服务于城市群社会经济的发展,以复合这样一种全新的视角探索城市群交通网络的性能。对城市群复合交通网络结构进行深入分析,采用站点映射法构建城市群复合交通网络模型;基于复杂网络理论构建城市群复合交通网络的特性指标,并提出指标计算方法;以呼包鄂城市群为例进行实证研究,构建道路交通网络和轨道交通网络叠加形成的复合交通网络,采用Pajek和Matlab仿真计算网络的节点度、节点度分布、平均路径长度、网络聚集系数。通过对比分析道路交通网络和复合交通网络的特性指标,发现轨道交通网络的叠加提高了城市群交通网络的可达性。
In order to make the traffic infrastructure better serve the social and economic development of the urban agglomerations, the performance of urban agglomeration transport network is explored in a new perspective. In this paper, the structure of compound transport network in urban agglomeration is analyzed in depth, and the model of composite transport network in urban agglomeration is constructed by using site mapping method. Based on the theory of complex network, the characteristic index of composite transport network in urban agglomeration is constructed and the index calculation method is proposed. A case study is carried out to construct a composite traffic network formed by the superimposition of road traffic network and rail transit network. Pajek and Matlab are used to calculate the node degree, node degree distribution, average path length and network aggregation coefficient. By comparing and analyzing the characteristic indexes of road traffic network and compound traffic network, it is found that the superimposition of rail transit network improves the accessibility of urban traffic network.