Analysis and Study on Bending Vibration Frequency of New Corrugated Steel Web Composite Box Girder

Table 3

Comparison of vibration frequency values of composite box girder with different width to span ratios (Hz).

Order of frequency	2 b/l = 0.150			2 b/l = 0.100			2 b/l = 0.075
	fx	fp	η (%)	fx	fp	η (%)	fx	fp	η (%)
1st order	7.084	7.459	5.03	3.347	3.518	4.86	1.813	1.902	4.68
2nd order	22.201	23.623	6.02	11.672	12.349	5.48	7.078	7.450	4.99
3rd order	39.029	41.807	6.64	22.197	23.615	6.00	14.179	15.016	5.57
4th order	55.924	60.151	7.03	33.396	35.876	6.91	22.205	23.615	5.97