Analysis of Three-Dimensional Vibration Characteristics of Single-Circle Double-Track Subway Tunnel under Moving Load

Figure 10

The 1/3 octave spectrum and the average value of the divided frequency vibration level at point A of the track bed. (a) 4 s meeting scenario. (b) 6 s meeting scenario. (c) 8 s meeting scenario. (d) 4 s single running scenario.

(a)

(b)

(c)

(d)