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

Table 6

The vertical vibration displacement of the ballastless track-subgrade after mud pumping has been reinforced.

Testing content		Vertical vibration displacement (mm)
		The ballastless track-subgrade without mud pumping			The ballastless track-subgrade after mud pumping reinforcement
Location (upper to lower)		Track slab	Concrete base	Subgrade surface	Track slab	Concrete base	Subgrade surface
Train moving speed (km/h)	250	0.29	0.13	0.06	0.31	0.18	0.06
	280	0.34	0.17	0.07	0.37	0.20	0.09
	283	0.39	0.21	0.08	0.42	0.27	0.10