Abstract：Abstract：Research purposes： Taking a frame tied bridge with continuous box girder whose span arrangement is （24+160+24） m as an engineering background, this paperadopts multi-point excitation realized by large mass method to consider the effect of traveling wave. And the responses of structures with different systems were analyzed comparatively, and parameters of elastic link device and viscous damper were selected reasonably to provide the basis for the reasonable selection of seismic isolation measures of arch bridge.
Research conclusions：(1) Parameters of damping device have a great impact on damping effect when the effect of traveling wave is considered. The comparison results of damping effect indicate that elastic link device and viscous damper have the same damping effect to axial force of ribs, but choosing elastic link device is better when involving decreasing bending moment of ribs. (2) The application of isolation system and the symmetry of damping device's set can make the distribution of internal force of ribs evenly, which can relieve the adverse effect of traveling wave. (3) Only using isolation system can reduce structure frequency effectively, but will lead to large displacement amplitude. The installation of damping device can reduce displacement amplitude significantly. (4) The research results can be used in guiding for seismic design of arch bridge.
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