摘要
交通运输网络的稳定发展有助于增强系统韧性与可靠性。基于复杂网络理论,使用Space-L网络建模方法构建了西安地铁加权网络模型,通过全局与局部指标计算,本文评估了西安地铁网络时空演化特征。结果发现:(1)随着时间演化结构不断完善,西安地铁网络连通性与韧性有显著的提高。(2)在初期发展阶段,网络密度增加,提高了可访问性得到了提高,然而单个站点的重要性是两极化的,少数站点具有较高的节点中心性,预计新建线路环线的开通,可以进一步提高网络韧性与服务能力,更好地缓解拥堵。(3)随着周期增加及网络结构的完善总体趋势逐渐趋于右长尾的正态分布,西安地铁网络属于良性发展。
The steady development of the transportation network helps to enhance the resilience and reliability of the system.Based on complex network theory,this paper constructs a weighted network model of Xi'an Subway by using Space-L network modeling method.By calculating global and local indexes,this paper evaluates the spatio-temporal evolution characteristics of Xi'an subway network.The results show that:(1)the connectivity and toughness of Xi'an subway network have improved significantly with the continuous improvement of the structure over time.(2)In the initial development stage,the increase in network density has improved accessibility.However,the importance of individual sites is polarized,and a few sites have high node centrality.It is expected that the opening of the new loop line will further improve network resilience and service capacity,and better alleviate congestion.(3)With the increase of the period and the improvement of the network structure,the general trend gradually tends to the normal distribution of the right long tail,and the Xi'an subway network is a benign development.
作者
张晨
ZHANG Chen(Xi'an Traffic Engineering Institute,Xi'an Shaanxi 710300,China)
出处
《西安交通工程学院学术研究》
2023年第4期1-5,11,共6页
Academic Research of Xi'an Traffic Engineering Institute
关键词
复杂网络
轨道交通
网络演化
拓扑结构
complex networks
rail transit
network evolution
topological structure
