首先介绍了国内外关于轮对内侧距对机车车辆动力学性能和轮轨关系影响方面的部分试验研究结果,重点以我国既有线固定辙叉道岔为例,从是否计入测量位置对轮缘厚度的影响,分析不同轮对内侧距通过道岔有害空间的问题,并就轮对内侧距变化后对机车车辆运动稳定性的影响开展滚动台试验研究,对轮对内侧距的影响进行综合分析,为我国客运专线列车轮对内侧距的选择提供参考。 First of all, the paper introduces some experimental results about the effect of inner distance of wheelset on the dynamic performance and wheel-rail relationship of rolling stock at home and abroad. The key point is taking the existing fixed frog switch in our country as an example, The influence of different wheelset inner distance through the harmful space of turnout is analyzed. The rolling table test is conducted to study the influence of inner wheelbase on locomotion stability. The comprehensive analysis of the influence of wheelset inner distance is China’s passenger dedicated line of the wheel inside the distance to provide a reference.