A Comparative Study on Vertical Dynamic Responses of Three Types of Elevated Railway Tracks Subjected to a Moving Train

Table 1

Parameters of train wheel and conventional ballast track from Sheng et al. [24].

Parameter	Symbol	Value
Wheel mass		1350 kg
Axle load		100 kN
Wheel moving velocity		40 m/s
Wheel/rail spring stiffness		1.40 × 10^9 N/m
Beading rigidity of rail		6.42 × 10^6 N·m^2
Linear mass density of rail		120.73 kg/m
Hysteretic damping ratio of rail		0.01
Stiffness of rail fastener		3.50 × 10^8 N/m
Hysteretic damping ratio of rail fastener		0.25
Spacing of rail fasteners		0.6 m
Linear mass density of slab		648 kg/m
Length of slab		0.25 m
Stiffness of under-slab spring		5.0 × 10^7 N/m
Hysteretic damping ratio of under-slab spring		1.0
Spacing of under-slab spring		0.6 m