Technique of Multibeam Bridge Span Aeroelastic Oscillations Suppressing

At the basis of different methods and means of oscillations extinction the aerodynamic, mechanical, combined principles can lie, the active and passive systems for control can be used. At the basis of mechanical methods lies a change in the natural vibration frequency of construction (due to increase in the hardness, change in the design scheme, etc.), increase of the damping properties of construction as a whole, and also the attachment of additional masses by means of the elastic and damping connections with the properly selected parameters. It is possible to note the following basic mechanical methods: Tuned Mass Dampers (TMD), viscoelastic dampers, liquid dampers. We will examine in more detail the aerodynamic methods of the extinction of oscillations. See also ADM001433. International Conference on Methods of Aerophysical Research (11th). Held in Novosibirsk, Russia on 1-7 Jul 2002.