Experimental Research on Span Direction Effect of Vortex-Induced Vibration of Bridge Main Girder Based on Symmetric Algorithm

Table 6

Comparison of estimated value and test value of second-order vertical bending vortex amplitude.

Measuring point	Normalized coordinates	Normalized mode shape function	Test	Convert	Relatively error
	x/l		Vertical dimensionless amplitude	Vertical dimensionless amplitude
1/8	0.214	0.532	0.01445	0.01622	4.55%
1/2	0.412	0.000	0.02135	0	—
1/6	0.523	−0.765	0.01523	0.12032	−8.35%
1/4	0.652	−1.010	0.12365	—	—