In order to study the influence of traveling wave effect on control effectivenessof seismic mitigation for cable-stayed bridge. The vibration-suppressed effectiveness ofsemi-active control and passive control for a long-span floating cable-stayed bridge iscalculated and analyzed with its three dimensional finite element model. The seismicresponses of cable-stayed bridge under traveling wave input are calculated. Semi-activecontrol and passive control can get good control efficiency for the most seismic responses ofthe cable-stayed bridge, but they can make some seismic responses including axial force ofthe beam lager. The seismic inputs with different frequency spectrums evidently influenceseismic responses of the cable-bridge and vibration-suppressed effectiveness of the controlmethods. Semi-active control is better than passive control with most damping force allalong for vibration-suppressed effectiveness of the integer seismic responses after travelingwave effect considered. Traveling wave effect can make bad influence on the beam ofcable-bridge, but can be propitious to bridge tower. Bad influence of traveling wave effecton vibration-suppressed effectiveness of the two control methods is not remarkable.
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