Experimental Study on Track-Bridge Interactions for Direct Fixation Track on Long-Span Railway Bridge

Table 1

Parameters for the finite element model.

Parameter	Value
Rail
Weight	60 kg/m
Elastic modulus	210 kN/mm^2
Second moment of inertia	30,900,000 mm^4
Sectional modulus	396,000 mm^3
Track girder
Length	12.5 m
Steel grade	SM 400
Upper flange	PL-460 × 22 × 12.402
Bottom flange	PL-540 × 14 × 2.036
	PL-300 × 25 × 8.470
	PL-200 × 10 × 1.178
Bracing	L-100 × 100 × 10 × 1.051
Cross beam	L-90 × 90 × 10 × 1.200
Web	PL-583 × 9 × 1.239
Vertical stiffener	PL-120 × 12 × 808
	PL-376 × 12 × 808
Rail fastener
Rail supporting point spacing	0.625 m
Spring stiffness of rail pad (dynamic)	133 kN/mm