With the continuous expansion of the passenger line,it can provide some space for expansion of existing passenger and freight trains.However,due to the existing lines,especially in the western mountain railway,it is limited by small radius curves.In the Baolan second line,curves adaptability of speeding train with thinking about passengers' comfort and safety while changing the train operation mode,ultrahigh arrangement,transition curves and length change were researched.Reasonable proposals was given to speeding railway with small radius curves.%随着客运专线建设规模的不断扩大,为既有线客货列车的提速扩能提供一定的空间.但由于既有线路,尤其是西部山区铁路,受小半径曲线分布群体性影响,列车提速空间受限.以宝兰二线某区段为例,从列车运行的舒适和安全的角度出发,研究在改变列车运行方式、超高布置形式、缓和曲线线型及长度变化条件下,小半径曲线群地段列车提速的适应性问题,提出适应小半径曲线群的合理提速建议方案.
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