Characterization of Vertical Response of Asphalt Trackbed Concrete in Railway Substructure to External Loads

Table 3

Material parameters of the ballastless railway track [10].

Parts	Geometry (m)	Materials	Elastic modulus (Pa)	Poisson ratio	Density (kg/m^3)	Damping ratio	Rayleigh damping coefficients
Rail	UIC 60	Steel	2.06 × 10^11	0.030	7800	0.015		0.054; 0.00094
Concrete slab	Width: 2.4; Thickness: 0.19	Cement concrete, C50	3.5 × 10^10	0.167	2450	0.030		0.105; 0.016
CA layer	Width: 2.4; Thickness: 0.05	Cement, asphalt emulsion, and sand	4 × 10^8	0.167	2050	0.035		0.09; 0.011
Concrete base	Width: 3; Thickness: 0.3	Cement concrete, C40	3.3 × 10^10	0.167	2300	0.030		0.16; 0.00105
Roadbed	Width: 7.8; Thickness: 0.7	Crushed stone	1.5 × 10^8	0.250	2200	0.045		0.13; 0.011
Subgrade	Width: 11.25; Thickness: 2.3	A and B filler and improved soil	0.6 × 10^8	0.250	2000	0.039		0.08; 0.0925
Ground	Width: 45; Thickness: 40	A, B, and C filler and improved soil	0.5 × 10^8	0.330	1800	0.035		0.091; 0.0083