F - Mech Eng,Light,Heat,Weapons – 16 – F
Patent
F - Mech Eng,Light,Heat,Weapons
16
F
F16F 15/023 (2006.01) E01D 11/04 (2006.01) E01D 19/14 (2006.01) E01D 19/16 (2006.01) F16F 7/104 (2006.01) F16F 15/04 (2006.01)
Patent
CA 2450089
An improvement in damping vibrations in the cables of cable stayed bridges involves the provision of one or more viscous damping elements within the space between the cable and a surrounding stay tube. The direction of action of the damping element(s) is generally parallel to the longitudinal axis of the cable. In one embodiment a toggle mechanism is provided at each end of a viscous damping element to connect the element to both the stay tube and the cable. Each toggle mechanism is pivotally connected to the viscous damping element as well as to the stay tube and cable so that transverse vibrations occurring in the cable are transmitted via the toggle mechanism to the viscous damping element so as to effectively dampen such vibrations. In a typical scenario the viscous damping element will be a piston and cylinder arrangement with a viscous fluid retained within the cylinder, similar to an automotive shock absorber.
Macrae & Co.
Motioneering Inc.
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