Behavior and Control of the Ballastless Track-Subgrade Vibration Induced by High-Speed Trains Moving on the Subgrade Bed with Mud Pumping

Table 5

The vertical vibration displacement of the ballastless track-subgrade with mud pumping.

Testing content		Vertical vibration displacement (mm)
		The ballastless track-subgrade without mud pumping			The ballastless track-subgrade with mud pumping
Location (upper to lower)		Track slab	Concrete base	Subgrade surface	Track slab	Concrete base	Subgrade surface
Train moving speed (km/h)	245	0.32	0.15	0.11	0.54	0.38	0.07
	258	0.29	0.13	0.09	0.47	0.29	0.06
	276	0.31	0.16	0.12	0.51	0.33	0.09