Exact Dynamic Characteristic Analysis of Steel-Concrete Composite Continuous Beams

Table 2

A comparison of the fundamental frequencies for case 1.

	Fundamental frequencies ()
	ANSYS FEA	Analytical solution [3, 4]	Proposed method	Relative errors
Infinite	11.94	12.06	12.06	1.0
150	11.24	11.33	11.33	0.8
100	10.95	11.04	11.04	0.8
50	10.26	10.32	10.32	0.6
30	9.60	9.65	9.65	0.5
20	9.02	9.06	9.06	0.4
10	8.06	8.08	8.08	0.2
5	7.28	7.28	7.28	0.0