基于辐射范围的城市轨道站点可达性研究

1.长安大学运输工程学院,陕西西安710064;2.天津城市基础设施建设投资集团有限公司,天津300401

交通运输规划与管理;可达性;城市轨道站点;辐射范围;接驳方式;多项logit模型

The accessibility of urban rail stations based on the catchment area
MA Shuhong1,TANG Dachuan2,LI Xiao1,and SUN Xingfang1

1.College of Transportation Engineering, Chang’an University, Xi’an 710064, Shaanxi Province, P. R. China;2.Tianjin Infrastructure Investment Group, Co. Ltd., Tianjin 300401, P. R. China

transportation planning and management; accessibility; urban rail station; catchment area; access mode; multinomial logit model

DOI: 10.3724/SP.J.1249.2022.03296

备注

可达性是评价交通基础设施效率的重要指标,准确测算轨道站点可达性有助于进一步优化站点服务设施和接驳环境.从城市轨道站点可达性的定义出发,建立轨道站点接驳方式选择的多项logit模型,并确定各类型站点对不同接驳方式的辐射范围.考虑轨道站点周边的建成环境和出行成本,建立基于辐射范围的轨道站点可达性模型.以中国西安市为例,计算轨道站点步行、自行车和公交接驳的可达性以及站点可达性.结果表明,轨道站点可达性在空间上呈现出从中心位置到外围“圈层”式递减的形态.换乘站各接驳方式的可达性值均处于较高水平,始末站处于较低水平.中间站根据位置的不同,可达性存在差异,越接近始末站可达性越低,越接近换乘站和市中心可达性越高.
Accessibility is an important index to evaluate the efficiency of transportation infrastructure. Accurately measuring the accessibility of rail stations can help to further optimize the station service facilities and connection environment. Based on the definition of urban rail station accessibility, we establish a multinomial logit model for the selection of rail station connection methods and determine the radiation range of various types of stations to different connection modes. And then we establish a track site accessibility model based on the catchment area by considering the built environment and travel cost around the rail station. Taking the city of Xi’an as an example, we calculate the stations'accessibilities via walking, bicycle and bus, and the total accessibility. Results show that railway stations' accessibilities decrease from city center to the periphery in space. The accessibilities of transfer stations are usually at a high level, while the accessibilities of the starting and terminal stations are at a lower level. Also, the accessibilities of intermediate stations vary a lot according to the locations. The closer the intermediate stations to the terminal stations, the lower the accessibility, and the closer to the transfer stations and downtown, the higher the accessibility.
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