Investigation of the Dynamic Performance of a Large-Span Suspension Bridge Influenced by Scouring Based on Vehicle-Bridge Coupled Vibration

Table 3

Dynamic characteristics due to the scouring depth.

Scouring depth (m)	Vertical vibration modes (Hz)		Transversal vibration modes (Hz)
	1st mode	2nd mode	1st mode	2nd mode
0	0.029654	0.058678	0.104917	0.339477
2	0.029653	0.056290	0.103809	0.335965
4	0.029651	0.051115	0.102341	0.331054
6	0.029648	0.046503	0.101255	0.327296
8	0.029646	0.042715	0.100334	0.324057
10	0.029643	0.039613	0.099494	0.321069
12	0.029640	0.037038	0.098694	0.318182
14	0.029637	0.034863	0.097913	0.315290
16	0.029634	0.032997	0.097137	0.312308
18	0.029630	0.031376	0.096360	0.309146
20	0.029626	0.029951	0.095578	0.305705