Numerical Investigation on Dynamic Performance of a Bridge-Tunnel Transition Section with a Deep Buried Pile-Plank Structure

Table 1

Material properties of the components in the transition zone [15, 22, 33].

Components or material	Young’s modulus E (MPa)	Poisson’s ratio μ	Density ρ (kg/m^3)	Rayleigh damping
				α (s^−1)	β (s)
Rail	205,900	0.30	7,830	0.022	0.002
Track slab	32,500	0.16	2,500	0.098	0.009
Base slab	25,500	0.16	2,500	0.098	0.009
Graded gravel + 5% cement	1,780	0.30	2,100	0.229	0.021
Graded gravel	1,580	0.24	2,000	0.252	0.022
Bearing plank	56,000	0.20	2,500	0.085	0.009
Cast-in-situ bores pile	38,000	0.20	2,500	0.098	0.008
Silty clay	15	0.30	1,930	0.262	0.024
Sand layer	75	0.30	1,950	0.270	0.023
Limestone	600	0.29	2,090	0.235	0.02
Abutment	30,000	0.20	2,300	0.098	0.009
Bridge deck	22,000	0.18	2,550	0.098	0.009
Tunnel filled concrete	20,000	0.20	2,400	0.098	0.009
Tunnel bedrock	12,000	0.20	2,300	0.15	0.015