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

Table 5

Model parameters of bridge girder.

Parameter	Symbol	Value
Girder bending stiffness		1.533 × 10^11 N·m^2
Girder linear mass		2.0163 × 10^4 kg/m
Hysteretic damping ratio of girder		0.05
Under-girder spring stiffness		1.0 × 10^13 N/m
Hysteretic damping ratio of under-girder spring		0.01
Under-girder spring spacing		0.65 m
Girder span length		34.8 m