Effect Of Additional Anti-Vibration Sleeper Track Considering Sleeper Spacing And Track Support Stiffness On Reducing Low-Frequency Vibrations

The effect of using a novel additional anti-vibration sleeper track (AAST) to reduce low-frequency vibrations (40-80 Hz) is investigated via numerical and field tests. A computational model is used to investigate the effects of sleeper spacing and track support stiffness. To verify the performance of the AAST, a field test was performed. The results confirmed that sleeper spacing and track support stiffness could be adjusted to control the vibration of subgrade in the targeted low-frequency range. The numerical and field test results demonstrated that the AAST can effectively reduce the low-frequency vibrations by reducing vibration transmission to the subgrade. (C) 2020 Elsevier Ltd. All rights reserved.