Vsl International Ag

Vsl Internationsl Ag

Yves Bournand

Juan Ayats

Adrian Gn{overscore (a)}gi

Adrian Gnagi

Adrian Gnägi

Hans Tschaggelar

A method and a device for damping relative motion between structural elements (), and in particular for damping oscillations in a stay cable of a building or a civil engineering structure. A damping device is disclosed which provides motion damping by means of frictional engagement () between friction surfaces composed of low-friction polymeric material (). The polymeric material preferably includes a dispersed lubricant. The use of low friction polymers results in a constant damping which is effective over a broad range of displacements and forces.

Cable friction damper

Guiding device () for strands (), the guiding device () comprising a body () in which at least one curved channel () is made, including a longitudinal axis curved according to the curvature of said channel () and a first part () which, situated in principle at the side of the intrados of the longitudinal axis (), permits, in the limit of the length of the channel (), the support of the strand () on at least one portion of the peripheral face () which this strand () presents.

Guiding device for strands

The invention relates to a corrosion protection system for a stay cable construction including a multiplicity of tension members made of parallel steel tensile elements, extending between a first anchorage and a second anchorage, and comprising two opposite ends, the first end co-operating with the first anchorage and the said second end co-operating with the second anchorage. The corrosion protection system involves the use of tensile elements which are not provided with a permanent corrosion protection during their fabrication. This corrosion protection system includes: a plurality of stay pipes, each freely surrounding a tension member made of unprotected tensile elements, a dehumidification device which produces dry air, supply pipes supplying the dry air to predetermined points situated on the first anchorage, the second anchorage, and the stay pipes, a ventilation device pushes the dry air in the supply pipes, surveying, measuring, controlling and testing facilities.

Corrosion protection system for a construction including a stay cable

Device for anchoring one end of a stay to a base

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Montigny le Bretonneux, France

Yves Bournand