Seismic Isolation and Damping Design of Long-span Arch Bridges and Application of Viscous Dampers

Seismic isolation and damping technologies, utilizing damping properties and energy dissipation of devices, significantly reduce displacements and forces in bridge systems during earthquakes, becoming crucial for bridge seismic resistance. This study examines the principles, design, and applications of viscous dampers in large-span arch bridges, showing their effectiveness in enhancing seismic performance under extreme events. It suggests that integrating various isolation and energy dissipation methods can greatly expand seismic bridge design possibilities.