城市连绵地区轨道交通服务层级构建

面向城市连绵地区构建与之适应的轨道交通系统,关键在于提供具有针对性的服务层级,满足区域范围内不同的出行需求,应对出行链的复杂性和多样性。从城镇群、都市区、中心城市三个层面分析城市连绵地区的典型空间形态,并探讨与之对应的城际出行、城郊出行、城市内部出行活动特征。提出构建差异化的轨道交通层级,即区域轨道交通、市域轨道交通、市区轨道交通,重点探讨各个层级轨道交通的构成、作用、线路技术特征等,以及不同层级的衔接关系。

Service Hierarchy of Rail Transit in Megalopolis

To develop effective rail transit system in megalopolises, it is important to establish a clear service hierarchy to meet travel demands within different re- gions with comprehensive and diversified characteristics of trip chains. By analyzing the typical spatial structure of megalopolis at three levels： urban cluster, metropoli- tan area, and major city, this paper discusses the corre- sponding characteristics of intercity travel, travel in sub- urban areas and within cities. Then the paper proposes a service hierarchy of rail transit including regional rail, metropolitan railway, and urban rail transit. The paper al- so elaborates the component, functionality, and technolo- gy characteristics of different rail transit levels, as well as the connection between the three levels of rail transit.