Table 1.

Material parameters of each layer in the ballastless track structure.

Property	Track Slab	Mortar Layer	Bed Plate	Void Area
Density (kg/m3)	2500	1800	2500	1.29 (air density)
Width (mm)	500	500	500	300
Thick (mm)	200	60	200	30
Shear wave velocity (m/s)	2466	1521	2466	0