北京地铁!号道岔提高侧向容许通过速度的论证

Demonstration of Increasing Permissible Side Track Velocity on No.9 Turnout in Beijing Subway

随着城市人口数量的增长、人们出行频率的增加,国内各大城市地铁均提出缩小行车间隔、提高地铁运能的要求。减少发车时间间隔,加密行车间隔,必然要求提高列车的折返能力,也就是需要提高道岔侧向的容许通过速度。在对北京地铁部分既有线提高运能的研究中,对2种北京地铁常用的60 kg/m钢轨9号单开道岔的侧向容许通过速度进行分析,在确保列车安全运行的前提下,给出最大侧向通过速度,提出工程应用的注意事项和要求,为以后线路提高运能提供依据和借鉴。

With the increase of the urban population and people＇s travelling frequency, the demands of shortening the running inter- val and improving the subway＇s transport capacity are put forward in urban rail transit in China. Shortening interval of departure time and running interval means that the turn-back capacity of trains has to be promoted, which means the permissible side track velocity on turnot, t has to be increased. In the research of capacity improvement of the existing lines of 13eijing, permiss^le maximum veloci- ty on side direction was studied based on two types of commony-used turnouts （60kg/m rail No.9 simple turnout）. On the premise of ensuring running safety, the research suggested the maximum permissible velocity on side direction and put forward the precau- tions and requirements in the process of engineering application, and provides reference for permissble maximum velocity on side direction of the turnout for improving the transport capacity of lines in the future.