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Abstract This article presents findings from rig tests focusing on the oscillatory behavior of ballast in light rail transportation. Tests were carried out using an Amsler HB-250 pulsator, applying a load of 50 kN and operating at a frequency of 8 Hz. Accelerometers were positioned at depths of 10, 30, and 50 cm beneath the sleeper within the ballast shoulder to record vibrations of the crushed stone particles. The study determined the amplitudes of particle vibration accelerations in three directions: vertically, perpendicular to the track axis, and along the track axis. Results indicate that the lowest vibration accelerations were consistently observed across the track axis (Y-axis) at all sensor locations. At a depth of 10 cm beneath the sleeper, contiguous values of vibration accelerations were recorded in the vertical plane (Z-axis) and horizontal accelerations perpendicular to the track (X-axis). However, at depths of 30 and 50 cm below the sleeper, vertical vibrations registered the highest accelerations, while horizontal vibrations along the X-axis were 30-36% lower.
Petriaev et al. (Wed,) studied this question.