Báo Cáo Bridge deck flutter and buffeting control by winglets

ABSTRACT
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The alternative solution for flutter and buffeting stability of a long suspension bridge will be an
active control using winglets. This method enables a light weight economic stiffening girder without
an additional stiffness for aerodynamic stability. This paper deals with numerical and experimental
studies on the flutter control by winglet which placed at the both side of a bridge deck section. The
two dimensional numerical study shows the flutter can be suppressed by the adequate motion of
winglets. The wind tunnel test with a spring mounted bridge model shows that the model is stabilized
up to the divergence speed. The response in gusty wind is also controlled.