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

Table 7

Impact coefficients with different deck roughness levels (with 5 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	2.32	2.33	0.0011	2.32	0.0040	2.33	0.0240	2.38	0.0575
4	2.33	2.33	0.0046	2.37	0.0157	2.32	0.0569	2.51	0.1779
6	2.32	2.32	0.0049	2.33	0.0188	2.35	0.0969	2.66	0.2658
8	2.26	2.26	0.0056	2.26	0.0220	2.35	0.0883	2.54	0.2211
10	2.26	2.27	0.0051	2.28	0.0171	2.31	0.820	2.59	0.2101