Issue: 2(16), 2011. Series: Multi-Topic

PASSIVE VIBRATION OF AEROELASTIC VIBRATIONS OF THE BRIDGE SUPERSTRUCTURE AT THE STAGE OF THE MOUNTING

UDK: 624.046.3

Salenko S. D., Obukhovskiy A. D., Telkova Y. V.

The research of aeroelastic vibrations of the deck stringer bridge models by the wind at the stage of the mounting is performed. The model of the original version of the bridge superstructure was subjected to violent vibrations of two types: wind resonance and galloping. Passive aerodynamic oscillation dampers, geometrics were optimized according to the method of the gradient descent, are offered. Calculations are showed that the use of suppressors to the full-scale deck at all stages of sliding is lead to the dim spot of the bending vibrations to the value not exceeding 0.1 m in the range of wind speeds up to 25 m/sec.