Bridges

Viscous Dampers Deliver Unmatched Bridge Protection
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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 Seismic 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

Coronado Bridge Seismic Damping


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


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)

Vincent Thomas Bridge Seismic Damping


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.

Yanglou Bridge Seismic Damping


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


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.

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