Research on Fluid Viscous Damper Parameters of Cable-Stayed Bridge in Northwest China

Table 1

Parametric regression analysis.

Surface fitting results	Coefficient of determination r^2
Shear force in south tower bottom: + − • +	0.995
Bending moment in south tower bottom: + × + − • +	0.991
Shear force in south tower foundation: − × − + • − × − + × •	0.962
Bending moment in south tower foundation:	0.951
Displacement in girder south end: + × + + × • − × − + × •	0.991
Relative displacement between the main bridge and the approach bridge: + + +	0.956