Abstract
Reducing deck displacement directly enhances the seismic performance of bridges because excessive deck displacement results in complex bridge response due to pounding between decks. Seismic isolation using passive energy dissipators is beneficial for enhancing bridge performance under near-field ground motions. U-shaped steel dampers are effective for mitigating bridge response. This paper shows an analysis on the effectiveness of U-shaped steel dampers which are set to an isolated viaduct. Seismic response of an isolated viaduct with U-shaped steel dampers is clarified based on nonlinear dynamic response analysis.
