Multi-Factor Modeling Method of the Load Sharing Ratio under Moving Train Loads

Table 2

Properties of the track-tunnel-soil system.

Location	Notation	Item	Value	Unit
Track and tunnel	mr	Mass per meter of rail	60.64	kg/m
	kf	Vertical stiffness of fastening	4.07 × 10^7	N/m
	cf	Vertical damping of fastening	9.90 × 10^3	N·s/m
	ρt	Density of trackbed and tunnel	2.50 × 10^3	kg/m^3
	Et	Young’s modulus of trackbed and tunnel	3.55 × 10^10	Pa
	μt	Poison ratio of trackbed and tunnel	0.25	—
	ζt	Damping ratio of trackbed and tunnel	0.05	—
Soil	Es	Young’s modulus of soil	3.50 × 10^8	Pa
	μs	Poisson’s ratio of soil	0.34	—
	Cs	Shear wave velocity of soil	208	m/s
	Cp	Compression shear wave velocity of soil	331	m/s