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.