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

Table 3

The vertical vibration acceleration of the ballastless track-subgrade with and without mud pumping.

Testing content		Vertical vibration acceleration (m/s^2)
		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	4.63	1.21	0.65	5.51	3.46	0.56
	258	4.17	1.05	0.63	5.09	3.24	0.61
	276	4.25	1.16	0.72	5.24	3.53	0.59