时速140 km地铁线路主要技术标准探讨

摘要

国内设计时速超过100 km的地铁线路暂无相关规范标准。通过分析对比国内主要铁路及地铁设计规范在线路技术标准方面的差异，借鉴国内建成线的经验参数，以速度目标值140 km/h的地铁线路为例，选取合理的最大超高值、允许欠超高值、超高时变率、欠超高时变率及超高顺坡率，计算出不同曲线半径对应的缓和曲线长度值，并参考地铁设计规范计算出站端及区间竖曲线半径值。最后总结得出时速140 km地铁系统线路主要技术标准。%There are presently no official code and standard for metro line of over 100 km/h in China. This paper compares the differences of line technical standards applied to the design of general railway and metro in China. With reference to the experiences of domestic 140 km/h metro lines, appropriate maximum track super-elevation, allowed super-elevation deficiency, super-elevation time variation, deficient super-elevation time variation and super-elevation slope rate are selected. Then the transition curve lengths corresponding to different curve radiuses are calculated. Finally the main technical standards for 140 km/h metro line are defined.