高速铁路无砟轨道线路动静态检测数据均值差异性研究

Research on Mean Value Difference between Dynamic and Static Inspection Data of High-speed Railway Ballastless Track

均值管理是评价线路平顺性状态的重要指标。高速铁路无砟轨道高平顺性、高稳定性的特点决定了均值管理具有更为重要的意义。通过对比分析杭长、宁安客运专线和合福高速铁路的轨道几何动静态检测数据,发现在线路状态较好的情况下,无砟轨道动静态检测数据均值差异很小,尤其是轨向、轨距不平顺。轨道平顺性状态、结构形式及初始状态是影响无砟轨道动静态差异的重要因素。因此在建设阶段应注重无砟轨道精调质量的提升;在运营阶段应结合不同轨道型式自身的结构特点对无砟轨道进行动静态管理。

As one of the main index for evaluating track irregularities, mean value management can reflect the overall quality status of track section, which is more meaningful for ballastless track of high-speed railway due to its high ride comfort and high stability. Therefore,on the base of the dynamic and static inspection data from Hangzhou - Changsha, Nanjing - Anqing passenger dedicated lines and Hefei-Fuzhou high-speed railway, this paper analyzes the differences of the inspection data from the two kinds of railways. The results show that the differences between dynamic and static inspection data of ballastless track are extremely small,especially those in terms of track alignment and gauge irregularity. Track irregularity status,structural type and initial quality contribute much to the differences. Therefore, track fine adjustment quality should be addressed during the construction of ballastless track, and both dynamic and static management of ballastless track should be enforced during the operation period with reference to the differences of track structures.