A Rapid Detection Method for Bridges Based on Impact Coefficient of Standard Bumping

Table 4

Impact coefficients with different deck roughness levels (without standard bumping).

Vehicle speed; (m/s)	Absolute smooth	Deck roughness level of A		Deck roughness level of B		Deck roughness level of C		Deck roughness level of D
		Mean	Variance	Mean	Variance	Mean	Variance	Mean	Variance
2	1.01	1.05	0.0005	1.09	0.0013	1.21	0.0069	1.43	0.0245
4	1.02	1.09	0.0015	1.18	0.0054	1.42	0.0246	1.95	0.1012
6	1.03	1.09	0.0021	1.20	0.0061	1.46	0.0312	1.94	0.1047
8	1.04	1.10	0.0027	1.19	0.0053	1.41	0.0263	1.92	0.0936
10	1.05	1.10	0.0033	1.18	0.0111	1.43	0.0472	1.85	0.1349