Flutter mitigation in bridges by allowing the distortion of the deck

The present document analyses the flutter response of a double-deck bridge cross-section that allows the rotation of each part around their own centre. The results show that, depending on the natural frequency of the new distortional mode, the critical flutter wind speed can be manipulated until the point where the cross-section is completely stable. This proves that there is no need to link the new deformation mode to the original heave or pitch of the deck. With a natural frequency in the right range, the new mode is excited automatically and can help to mitigate flutter.     «

The present document analyses the flutter response of a double-deck bridge cross-section that allows the rotation of each part around their own centre. The results show that, depending on the natural frequency of the new distortional mode, the critical flutter wind speed can be manipulated until the point where the cross-section is completely stable. This proves that there is no need to link the new deformation mode to the original heave or pitch of the deck. With a natural frequency in the righ...     »