Dynamic Responses of Continuous Girder Bridges with Uniform Cross-Section under Moving Vehicular Loads

Table 8

Parameters description and their values.

Index	Description	Values	Note
A	Pavement roughness	1 cm, 2 cm, 3 cm, 4 cm, 5 cm	Maximum magnitude
B	Length of the main span	20 m, 25 m, 30 m, 35 m, 40 m
C	Ratio between side span and middle span	0.5, 0.6, 0.7, 0.8, 0.9, 1.0	Changing the side span
D	Number of spans	3, 4, 5, 6, 7
E	Weight of the bridge	(0.6, 0.8, 1.0, 1.2, 1.4) × ρ	Changing the density
F	Stiffness of the bridge	(0.6, 0.8, 1.0, 1.2, 1.4) × E	Changing the modules
G	Damping ratio of the bridge	(0.6, 0.8, 1.0, 1.2, 1.4) ×  ξ
H	Weight of the vehicle	(0.6, 0.8, 1.0, 1.2, 1.4) ×	Including body and tyres
I	Upper stiffness of the vehicle	(0.6, 0.8, 1.0, 1.2, 1.4) ×
J	Upper damping of the vehicle	(0.6, 0.8, 1.0, 1.2, 1.4) ×
K	Lower stiffness of the vehicle	(0.6, 0.8, 1.0, 1.2, 1.4) ×
L	Lower damping of the vehicle	(0.6, 0.8, 1.0, 1.2, 1.4) ×
M	Speed of the vehicle	20~120 km/h (step = 20 km/h)

: the whole weight of the vehicle, : upper stiffness, : upper damping, : lower stiffness, and : lower stiffness. The values of all the parameters are obtained from the fundamental model (Table 7).