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中文摘要：
将换乘便捷性指数作为城市轨道交通网络拓扑参数之一,给出换乘便捷性指数的计算模型。按照放射型＋环线、放射型和方格型3种网络形态对城市轨道交通网络的换乘便捷性及影响因素进行分析。研究结果表明：不同衔接线路数的车站比例与衔接线路数的关系服从幂律分布;在换乘站数量较小情况下,换乘便捷性指数随换乘站数量的增加基本呈线性增长,随线均换乘站数量的增加呈幂指数增长;放射型＋环线网络形态的城市轨道交通网络换乘便捷性指数最大,放射型次之,方格型最小;移除多线衔接的换乘站对放射型＋环线网络形态的城市轨道交通网络换乘便捷性破坏性最大,方格型网络形态的城市轨道交通网络换乘便捷性指数对换乘站的增加或减少具有鲁棒性;在实际规划设计城市轨道交通时,为方便乘客换乘,在条件允许的情况下应增加换乘站和环线的规划设计。
英文摘要：
The transfer convenience index was regarded as one of the topological parameters of urban rail transit networks,and the calculation model for the transfer convenience index was presented.The urban rail transit networks were classified into three forms,namely,radial-ring network,radial network and grid network.The transfer convenience and its influencing factors were analyzed according to these network forms.Results show that the proportion of the station with different numbers of connection lines and the number of connection lines follows power-law distribution.When the number of transfer stations is smaller,the transfer convenience index has a linear growth trend with the increase of transfer stations,and has an exponential growth trend with the increase of the average transfer stations.Moreover,the transfer convenience index of radial-ring network is the greatest,then that of radial network takes the second place and that of grid network is the least.Removing the transfer station with multiple connection lines will destroy the transfer convenience of radial-ring network the most.The transfer convenience index of grid network is robust to the increase or decrease of transfer stations.If the condition allowed,increasing transfer stations and loop lines should be taken into consideration to facilitate the passengers in the practical planning and designing of urban rail transit.
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