城市轨道交通中小号码道岔的设计和应用

随着全国各大城市轨道交通建设大规模地展开,在国铁受到冷遇的小号码道岔在城市轨道交通中得到了较多的应用。选用小号码道岔,可以节约土地用量,降低地铁建设成本,同时也迫使地铁车辆段的选址逐渐远离闹市区。广州地铁5号线道岔是全国最小号码的道岔,以此为例介绍了道岔的设计应用和维护。合理地选用小号码道岔符合城市轨道交通的特点。

Design and Application of Small-sized Turnout for Urban Rail Transit

With the expansion of large-scale construction of rail transit in the metropolis nationwide,the small-sized turnout,which is not used by the Nation Railways,has been applied to urban rail transit and obtained improvement in its design as well.The use of small-sized turnout can save land,lower rail construction cost and force the site selection of depot to keep distance from the urban center.This paper takes the turnout of Guanzhou Metro Line 5,which is the smallest in China,as an example to explain its design,application and maintenance.