Vibration Characteristics of Fully Enclosed Sound Barriers on Railway Bridges under the Movement of Trains

Table 2

Calculation parameters.

CRH380 A	bogie mass (kg)	3060	fastener	stiffness (N/m)	6.6e7
	Wheelset mass (kg)	1517		Loss factor	0.25
	Primary suspension stiffness (N/m)	1.772e6		Spacing (m)	0.6
	Primary suspension damping (N∙s/m)	2e4	Sleeper	1/2 quality (kg)	170
	Wheel-rail contact stiffness (N/m)	1.4e9		Elastic modulus (Pa)	1.1e8
Rail (CHN60)	Elastic modulus (Pa)	2.1e11	Ballast bed	Support stiffness (N/m)	1.38e8
	Moment of inertia (m^4)	3.2e − 5		Loss factor	1.0
	Density (kg/m^3)	7.85e3		vibration mass (kg)	531.4
	Sectional area (m^2)	7.745e − 3