Earthquake Dampers for Bridges

Viscous Dampers Deliver Unmatched Bridge Protection
bridge dampers, earthquake dampers
Long Stroke Dampers

Our long stroke viscous dampers provide bridge isolation for some of the world’s most traveled bridges. 

  • Forces up to 2000 Kips
  • Strokes up to 60 inches
  • Alpha .2 to Linear, Lock up
  • In line, self contained spring loaded reservoir
  • Visual or electronic remote fluid monitoring system

 



bridge dampers, earthquake dampers



Coronado Bridge - San Diego, California
  • Equipment: 3400 m long suspension bridge, excitation by vehicles, wind and seismic events
  • Qualification: customized test criteria on component level
  • Solution: 20 Enidine Viscous Damper 300 KIP X 18 inch stroke


McKay Bridge: Halifax, Nova Scotia CA
Tuned Mass Damping
  • Equipment: Suspension Bridge
  • Qualification: Customized test criteria on component level
  • Solution: (12) Linear Viscous Damper for Tuned Mass Damper – Power Dissipation 300 Watt continuous

bridge dampers, earthquake dampers


Vincent Thomas Bridge, San Pedro, California
Sesimic Damping
  • Equipment: 1840 m long suspension bridge
  • Qualification: customized test criteria on component level
  • Solution: Enidine Friction / Viscous Damper (48 elements)

bridge dampers, earthquake dampers


Yangluo Bridge-阳逻大桥, Wuhan, China
FVD Sesimic Damping
  • Equipment: Long-Span suspension bridge
  • Qualification: Customized test criteria on component level
  • Solution: (4) Nonlinear Fluid Viscous Dampers – Fmax of 1000KN and a total stroke of 2000MM.


Shenzhen Bridge: Hong Kong, China
Tuned Mass Damping
  • Equipment: Hybrid Cable Stay Design
  • Qualification: Customized test criteria on component level
  • Solution: Linear Viscous Damper for Tuned Mass Damper – Power Dissipation 1000 Watts, 500mm Stroke

bridge dampers, earthquake dampers


Lake Barkley Bridge: Aurora, KY USA
Seismic Damping
  • Equipment: 3792 ft bridge, Twin Basket Handle Steel Suspended Main Span, East and West box Girder Approaches
  • Qualification: customized test criteria on component level
  • Solution: QTY 12 Endine FVD 250kip x 20inch Total Stroke, QTY 6 at each approach end bents


Santiago Creek: San Diego, CA USA
Seismic Damping
  • Equipment: Slab bridge
  • Qualification: Customized test criteria on component level
  • Solution: (6) Nonlinear Fluid Viscous Damper – Fmax of 160kips and a total stroke of 30 inches.

bridge dampers, earthquake dampers

Whether it’s the Vincent Thomas Bridge in California or the Yangluo Bridge in China, our bridge isolation solutions give travelers peace of mind.