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以上海铁路局开行的长三角快运铁路网为研究对象,选择?2014?年?9?月和12?月为时间节点,以受理车站为空间节点,选取最短空间距离、最短时间距离和连接性3个指标研究长三角快运铁路网可达性状况。结果表明:长三角的铁路快运网络在南京、镇江一带空间可达性最好;从时间距离上看,长三角铁路快运时间可达性格局和空间可达性大致相同;从连接性来看,2014?年?9?月长三角地区的连接性相对持平,而?2014?年?12?月在京沪、沪昆等线路的连接性则发生变化。在此基础上,提出进一步优化路网的建议。
Taking the Yangtze River Delta express railway network operated by the Shanghai Railway Administration as the research object, we choose to select the shortest distance, the shortest distance and the connectivity Three Indicators to Study the Reachability of the Yangtze River Delta Express Railway Network. The results show that the expressway network in the Yangtze River Delta has the best spatial accessibility in Nanjing and Zhenjiang. From the perspective of time distance, the expressway accessibility pattern and space accessibility of the Yangtze River Delta Railway are roughly the same. From the perspective of connectivity, In the Yangtze River Delta from January to September 2014, the connectivity in the Yangtze River Delta is relatively flat, while the connectivity in the Beijing-Shanghai, Shanghai-Kunming and other routes in 2014 and December is changing. On this basis, we put forward suggestions for further optimizing the road network.