Spanwise vortex-induced vibration responses of long-span suspension pipeline bridge

This paper provides accurate reference data for vibration restraint. Based on the single degree of freedom linear VIV model of experience, the spanwise responses of pipeline bridge were deduced by synthetically considering factors such as model shape and damping ratio. By taking a long-span cable-stayed pipeline bridge as example, vortex-induced vibration responses were analyzed under different wind speeds, different wind attack angles and different loading positions. The results showed that: the model order became higher while wind speed increased. The transversal displacement was bigger than vertical displacement. After increasing restrain, displacements reduced 13.4cm and 6.3cm. And the middle part was key position for vibration suppression.