Study on the Effect and Mechanism of Aerodynamic Measures for the Vortex-Induced Vibration of Separate Pairs of Box Girders in Cable-Stayed Bridges

Table 2

Primary parameters of sectional model.

Name	Unit	Value of real bridge	Similarity ratio	Model design value
Equivalent mass ()	kg/m	40369.9	1/45^2	19.94
Equivalent mass moment ()	Kg·m^2/m	4302810	1/45^4	1.05
Basic frequency of vertical bending ()	Hz	0.36	45/2.7	6,030
Basic frequency of torsion ()	Hz	0.93	45/2.7	15.42