Research Article

Experimental Analysis on Dynamic Response of X-Section Piled Raft Composite Foundation under Cyclic Axial Load for Ballastless Track in Soft Soil

Figure 10

Frequency spectrum curves of vibration velocity at embankment, cushion, subsoil for three cyclic loading frequencies. (a) f = 5 Hz. (b) f = 10 Hz. (c) f = 20 Hz.
(a)
(b)
(c)