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

Table 4

Fitting table of aerodynamic spanwise correlation parameters during vortex vibration.

Vibration state	First lock	First lock	First lock	First lock	First lock	Second lock	Second lock
Description	Zone starting point	Area ascending section	Area maximum point	Descent section	Zone end point	Area ascending section	Area maximum point
Fitting parameters	0.215	0.125	0.325	0.021	0.125	0.001	0.042
Ci	0.210	0.120	0.415	0.326	0.442	0.120	0.001
Fitting parameters	0.125	0.177	0.045	0.065	0.262	0.115	0.105
Di	0.325	0.125	0.541	0.623	0.142	0.091	0.483
Obsessive-compulsive	5.262	21.142	21.324	12.023	4.523	8.521	9.241
Length 1/Ci	5.021	36.102	36.132	18.524	5.865	6.652	7.021