Using vehicle-track dynamics analysis methods and based on a dynamic simulation model,this study investigated the adaptability of line planar parameters on an existing railway curve section designed for 350 km/h when operating at 400 km/h.The results show that:(1)When the train speed is increased to 400 km/h,various dynamic indicators of the train significantly increase compared to those at 350 km/h,resulting in reduced safety and comfort.(2)Although train safety can be ensured,ride comfort is compromised,posing a certain risk to comfort levels,and adaptability needs further improvement.(3)It is recommended that,where possible,the radius of curves and the length of intermediate straight line should be increased appropriately to ensure passenger safety and comfort.
high-speed railwayvehicle-track modelline planar parameterssafety and stability
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