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

Figure 11

Vibration of the soil (one-third octave band spectra) at distances □ 2.5, ○ 7.5, △ 12.5, + 20, × 30, and ◊ 50 m, due to train passages with different speeds (a, f) 63 km/h, (b, g) 80 km/h, (c, h) 100 km/h, (d, i) 125 km/h, and (e, j) 160 km/h; locomotive (a, b, c, d, e) and measuring car (f, g, h, i, j).