The study on mitigating seismic pounding of the highpiers bridge

In this paper, the anti-pounding dampers were installed in longitudinal and transverse directions of a high-pier bridge´s pounding locations (expansion joints), under multi excitation considering the traveling wave effect, doing comparative analysis of the seismic response of the bridge with high-pier between with and without the anti-collision damper which is set on pounding location, anti-collision damper can be effective in preventing collisions between deck beams and between deck beam and block, and the displacements of the bridge piers is limited, internal forces of piers´ ends greatly reduced, reducing the damage to piers, which will help to improve the overall seismic performance; but setting collision damper would also adversely affect the bridge with high-pier, increasing the possibility of damage to the deck beams, uncertainty of bearing reaction.