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

Table 1

Comparison table of design parameters between the brace model and the segment model.

Parameter name	Symbol	Unit	Real bridge value	Design scale value	Segment model value		Stretch model value
					Design value	Realized value	Design value	Realized value
Length of main beam	L	m	—	1/80	2	2	6	6
Width of main beam	B	m	39	1/80	0.5125	0.3251	0.3254	0.2415
Height of main beam	H	m	3.425	1/80	0.120	0.201	0.130	0.022
Equivalent mass		Kg/m	28047	1/80^2	4.4521	4.2762	4.2145	4.2153
Vertical bending fundamental frequency		Hz	0.1425	20	5.685	4.52	5.654	3.210
Vertical bending damping ratio		%	0.2	1	0.6	0.215	0.4	0.526
Wind speed ratio	—	—	—	—	4	4.85	4	7.51