Prediction of Wind Velocity to Raise Vortex-Induced Vibration through a Road-Rail Bridge with Truss-Shaped Girder

Table 4

Differences between vortex shedding frequency and natural frequency.

Test cases	Vortex shedding frequency, (Hz)	Natural frequency, (Hz)	Difference
1	2.100	2.100	,
2	2.443	2.444
3	3.000	3.006
4	3.771	3.788
5	1.229	1.238
6	1.457	1.463
7	1.786	1.788
8	2.243	2.244
9	1.657	1.656
10	1.957	1.956
11	2.400	2.406
12	3.014	3.013