Application of KLE-PEM for Random Dynamic Analysis of Nonlinear Train-Track-Bridge System

Table 3

Properties of the track-bridge.

Notation	Unit	Item	Value
Er	N/m^2	Young’s modulus of rail	2.06 × 10^11
	—	Poisson’s ratio of rail	0.3
Ir	m^4	Mass moment of inertia of rail cross section	2 × 3.217 × 10^−5
	kg/m	Mass per unit length of rail	2×60.64
Es	N/m^2	Young’s modulus of slab	3.6 × 10^10
	–	Poisson’s ratio of slab	0.2
Is	m^4	Mass moment of inertia of slab cross section	1.6 × 10^−3
	kg/m	Mass per unit length of slab	1.2 × 10^3
krs	N/m	Spring stiffness of fastener	2 × 5.0 × 10^7
crs	N·s/m	Damping coefficient of fastener	2 × 3.625 × 10^4
	N/m^2	Spring stiffness of CA layer per unit length	2 × 1.5 × 10^9
	N·s/m^2	Damping coefficient of CA layer per unit length	2 × 8.3 × 10^4
Eb	N/m^2	Young’s modulus of girder	3.45 × 10^10
	—	Poisson’s ratio of girder	0.2
Ib	m^4	Mass moment of inertia of girder cross section	12.744
	kg/m	Mass per unit length of bridge girder	2.972 × 10^4
ζb	—	Damping ratio of girder	0.05