Stress ribbon pedestrian bridge spanning 252 m

To connect a holiday resort with an adjacent community in South Moravia the well-known bridge designer Jin Strdsky used the well-proved system of stressed ribbon footbridge spanning 252 m. The theoretical natural vibration modes and frequencies were solved by means of the computer programe. With regard to the expected footbridge sensitivity to wind its aeroelastic model was studied in a wind tunnel. Although the amplitudes of the vibrations due to the air flow do not threaten the bridge structure, the designer was recommended to include in the design the application of dampers situated in the railings and to increase the damping (of horizontal motion) by a system of boxes of low structural depth with sphere which can be fastened to the lower face of the deck.