Abstract
It will be significant to study the devices for increasing the structural damping of the cable-stayed bridges, because the structural damping plays an important role in the aerodynamic behaviour. It may happen that the transverse local vibrations of the cables as a partial structure system couple with the vibrations of the cable-stayed bridge as a whole structure system, for those bridges in recent years which tend to be more longer and to have the multi-cable system.
Therefore, in this brief paper, the effects of cable vibration dampers on the whole structural damping of multi-cable-stayed bridges was investigated by means of complex eigenvalue calculation. And it was shown that the structural damping of this type of bridges having the dampers in the stay cables could be increased as much as significant in aerodynamic design.
