Abstract
The results of a wind-tunnel study of the aerodynamic response and stability of a cable-stayed bridge deck are presented. A bridge section model was employed in smooth flow and the effects of modifying the bridge geometry were investigated. The results showed that the original bridge deck was unstable in torsion and exhibited high, vertex-induced, vertical oscillation. Streamlining of the deck resulted in improved aerodynamic performance, with an increase in the critical wind speed for torsional flutter and decrease in the vortex-induced response.
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