This paper presents the calculation of the root mean square (RMS) response of a suspension bridge using separate control flaps (SCF) in turbulence conditions. It is assumed that the mean wind velocity is not large enough to cause coupled vibrations and that single mode buffeting response is of interest. The RMS response is determined on the basis of the equation of motion, which is formulated stochastically according to the wind random turbulence components. It is further assumed that the sum of the motion-induced forces and the buffeting-induced forces from the girder and the flaps is computed on the basis of independent flutter derivatives and independent aeroelastic coefficients from the girder and from the flaps. The theory is demonstrated by a numerical example based on a long-span suspension bridge model with the Great Belt girder.
|Navn||Structural Reliability Theory|
Presented at the European Conference on Structural Control, Champ sur Marne, France, July 3-7, 2000
PDF for print: 16 pp.
- Aeroelastic Forces
- Buffeting Forces
- Wind Spectra
- Stochastic Modal Analysis
- Suspension Bridges