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

Table 8

Impact coefficients with different deck roughness levels (with 15 cm bumping height).

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	3.29	3.30	0.0011	3.30	0.0045	3.29	0.0159	3.30	0.0566
4	3.31	3.31	0.0053	3.32	0.0209	3.32	0.0679	3.35	0.1932
6	3.29	3.29	0.0053	3.28	0.0197	3.31	0.0632	3.46	0.3103
8	3.22	3.22	0.0075	3.21	0.0186	3.21	0.1130	3.43	0.2943
10	3.22	3.23	0.0042	3.20	0.0222	3.26	0.0928	3.37	0.2464