无砟轨道减振机理及隔振措施分析

Analysis of Ballastless Track Vibration Mechanism and Vibration Isolation Measures

通过结合单自由度质量弹簧系统振动机理,建立相应的有限元模型,分别探讨了客专无砟轨道中扣件、CA砂浆层及路基在轨道交通隔振减振中的效果和作用规律。结果表明:降低扣件竖向刚度对无砟轨道的减振效果最明显,路基减震效果其次,CA砂浆最差。

In this paper, the finite element model of single spring mass spring system is established, and the effect and action law of fastener, CA mortar layer and subgrade in vibration isolation and vibration isolation are discussed respectively in passenger-dedicated ballastless track. The results show that the vibration reduction effect of vertical steel on ballastless track is the most obvious, and that of CA cushion is the worst.