Seismic Dampers were retrofitted on the Coronado Bridge between the piers and superstructure over the shipping channel to add strategically located energy dissipation.
Twenty 300-kip by 18-inch stroke hydraulic dampers were utilized. ENIDINE Seismic Dampers were 100% tested dynamically on a special high performance test bench.
The King County Court seismic retrofit included ninety-six 150-kip by 6-inch stroke Enidine Hydraulic Dampers. These double acting linear dampers help absorb excess internal structural energy during a seismic event.
The orientation of choice is a diagonal brace configuration for building structures. For new construction projects the dampers are buried within the wall structure. However, with retrofit projects, many times the diagonal braces were exposed as shown below.
ENIDINE Seismic Damper green tagged after performance testing and final inspection.
