高速铁路轨道扭曲不平顺值算法研究

Research on track distortion algorithm for high speed railway

高速铁路轨道扭曲不平顺是衡量轨道平顺性的参数,也是轨道几何形位不平顺的典型代表之一。本文主要通过扭曲不平顺的定义,用严密的数学方法推导扭曲不平顺计算方式的技术手段,比较了严密算法与用水平误差变化量来计算扭曲值的近似算法之间的差异,得出了用一定长度范围内(基长3m)的水平误差变化量来近似计算扭曲值是可行的,并以轨道实测数据进行了验证。

Twist irregularity of high-speed railway track is an important parameter for assessing the track comfort; it is one of the typical representative for the track geometry. Based on the definition of track distortion, this paper proposes an algorithm for the track distortion with rigorous mathematical proving. The differences between the algorithm and traditional horizontal error variation method are compared. It concludes that the horizontal error variation method can be used to calculate the track distortion value within a certain length （3m） and proved by real experimental track data.