Cable Dampers

Cable Dampers for Civil Markets

 

A cable stayed Bridge has one or more towers that have cables attached to support the deck. It is well documented that the low inherent damping characteristics of the long cables used on cable-stayed bridges results in vibrations with very high amplitudes. The vibrations are caused by a lifting effect on the cables that results from rivulets of water that form on the bottom of the cables during rain storms. Once a rivulet forms, the cable takes on the shape of a wing and under moderate winds, the cable is easily lifted.Waldo Bridge = Penobscot River Bridge, ME

Taylor Devices  developed a line of passive damping devices specifically designed to minimize cable vibrations.  These devices provide continuous energy absorption and are designed for millions of cycles with no maintenance requirements.

Rigorous testing programs show that Taylor Devices Cable Dampers are effective in reducing damaging cable vibrations caused by wind and rain storms.  Left unprotected, the vibrations in the highly tensioned supporting cables can cause fatigue and breakage of transition pipes, or even anchorages, thus compromising the integrity of the bridge. while reducing public.  It is critical to maintain the stability of these essential, supporting cables.

Taylor Cable Dampers are attached perpendicularly to the cables and can be used for both vertical and lateral cable vibrations.  The Dampers are connected near one end of the cable, most often at the deck location.  In some applications, the dampers can be placed at the tower/cable interface. The effect of the cable damper is to provide a soft damping enhancement to the vibration frequency of the cable to reduce vibration amplitude and minimize the motion.

Waldo Bridge Cable Dampers

Waldo Hancock Bridge
Cable Dampers : 160
Bridge Span: 244M

Cable dampers for Cable Stayed Bridges
C Value Power Force Stroke Velocity
10.5 kg/(mm/s) 447W 7.16 KN (1576 lbs) ±50.8㎜ 678㎜/s (26.7in/s)

 Cable Dampers .     .     .     .     .     .     .     .    .

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Cable Dampers.PDF

 

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