Analysis of Antideformation and Antivibration Effect of Different Track Beds under Subway Train Vibration

Table 6

Parameters of the spring of the substructure.

The name of the spring	Value
Vertical dynamic stiffness of rail fasteners (kN/m)	4.2 × 103
Lateral dynamic stiffness of rail fasteners (kN/m)	9.5 × 103
Longitudinal dynamic stiffness of rail fasteners (kN/m)	4.2 × 103
Vertical damping of rail coupler (kN/m)	50
Rail coupler transverse damping (kN·s/m)	50
Longitudinal damping of rail fasteners (kN·s/m)	50
Base stiffness of integral track bed (kN/m/m2)	6.4 × 105
Base damping of integral track bed (kN·s/m/m2)	3.7
The base stiffness of rubber cushion floating plate trackbed (kN/m/m2)	2 × 104
Rubber cushion floating plate track bed base damping (kN·s/m/m2)	1 × 103
Base stiffness of steel spring floating plate trackbed (kN/m)	6.9 × 103
Steel spring floating plate track bed base damping (kN·s/m)	75