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

Table 3

Model parameters of steel-spring floating slab track.

Parameter	Symbol	Value
Rail bending stiffness		1.3453 × 10^7 N·m^2
Rail linear mass		121.28 kg/m
Hysteretic damping ratio of rail		0.001
Under-rail spring stiffness		8.7 × 10^7 N/m
Hysteretic damping ratio of under-rail spring		0.2
Number of springs above one slab		8
Under-rail spring spacing		0.625 m
Slab bending stiffness		2.39 × 10^8 N·m^2
Slab linear mass		3085.3 kg/m
Hysteretic damping ratio of slab		0.05
Number of slabs in one unit		7
Number of springs beneath one slab		4
Slab length		5.0 m
Under-slab spring stiffness		3 × 10^7 N/m
Hysteretic damping ratio of under-slab spring		0.25
Under-slab spring spacing		1.25 m