城际出行链视角下的高铁可达性分析

Accessibility Analysis of High-speed Rail From the Perspective of Intercity Travel Chain

为探究“门到门”视角下的高铁服务能力,本文从高铁城际出行链视角出发,以成渝间城际出行为例进行实证分析。利用百度地图API获取市内衔接交通出行时间,对同城高铁车站可达性进行评价;综合考虑市内出行和城际出行,选取面积和人口覆盖率指标,建立城际高铁可达性计量模型。结果表明:高铁车站衔接交通行程时间圈层结构显著,受到城市交通网络和出行方向的影响;城际高铁可达性不仅与衔接交通出行模式的相关,还受到发车站选择的影响,可通过优化列车接入站方案来提高整体可达性。

In order to explore the service capacity of high-speed rail from the perspective of"door to door",this paper,starting from the perspective of high-speed rail inter-city travel chain,takes the inter-city travel between Chengdu and Chongqing as an example to conduct empirical analysis.Use Baidu Map API to obtain the travel time of the city's connecting traffic,and evaluate the accessibility of high-speed railway stations in the same city;The accessibility measurement model of inter-city high-speed rail is established by comprehensively considering intra-city travel and inter-city travel,selecting area and population coverage indicators.The results show that the time cycle structure of high-speed railway stations connecting with traffic is significant,which is affected by urban traffic network and travel direction;The accessibility of intercity high-speed rail is not only related to the mode of connecting traffic,but also affected by the choice of departure station.The overall accessibility can be improved by optimizing the train access station scheme.