Simultaneous Measurements of the Vehicle, Track, and Soil Vibrations at a Surface, Bridge, and Tunnel Railway Line

<div>Natural modes of the car body, (a) first vertical bending at 9 Hz, (b) first lateral bending at 11 Hz, (c) first torsion at 14 Hz, and (d) second vertical bending at 18 Hz.</div>

Shock and Vibration

fig4

Figure 4

Figure 4: Simultaneous Measurements of the Vehicle, Track, and Soil Vibrations at a Surface, Bridge, and Tunnel Railway Line 