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铁路线路平面曲线半径(R)选择与曲线实设超高(Δh)设置对提高列车行车速度具有重要的作用,针对既有线提速改造,分析了铁路最小曲线半径与列车运营模式的关系,曲线半径R与Δh的关系,建议新设的曲线半径应尽量选择较大值,Δh选择在20～40mm,为将来的超高调整留有余地。在客、货混运的线路上,最小曲线半径不仅与最高行车速度有关,而且还受最低行车速度的影响;同时,最小曲线半径也与欠超高和过超高的允许值有关。因此,提高最低行车速度、缩小最高与最低速差将获得较小的曲线半径,从而可节省工程投资。
The choice of the curve radius (R) and the setting of the curve height (Δh) of the railway lines play an important role in increasing the train traffic speed. According to the reconstruction of existing railway lines, the relationship between the minimum railway curve radius and the train operation mode, the curve radius R and Δh the relationship between the proposed new curve radius should try to choose a larger value, Δh selected at 20 ~ 40mm, leaving room for future high adjustment. In the passenger and freight mixed lines, the minimum curve radius not only with the maximum driving speed, but also by the minimum driving speed of impact; the same time, the minimum curve radius is also due to less than high and over the allowable value. Therefore, raising the minimum driving speed, narrowing the maximum and minimum speed will get a smaller curve radius, which can save engineering investment.