Frictional damper for damping movement of structures

Details Frictional damper for damping movement of structures Frictional damper for damping movement of structures

E - Fixed Constructions

04

B

E04B 1/98 (2006.01) E01D 11/04 (2006.01) E01D 19/16 (2006.01) E04B 1/36 (2006.01) E04H 9/02 (2006.01)

Patent

CA 2446498

The invention is a damper and a method for protecting buildings and similar structural systems from dynamic loading such as loading caused by earthquakes, strong winds or machine vibrations. More specifically, the damper is made from structural members being interconnected in frictional or visco-elastically dampened rotational joints. Due to the dampening of the joints, relative movement between the structural elements is dampened. In particular, the damper is useful for base isolation, e.g. in order to allow a building or a machine to move in a dampened movement relative to its foundation or in order to allow a cable stay of a cable stay bridge to move in a dampened movement relative its fixation point on the bridge.

L'invention concerne un système amortisseur et un procédé correspondant pour la protection des bâtiments et autres structures contre les charges dynamiques (par exemple, charges résultant de tremblements de terre, vents forts ou vibrations de machines). Plus précisément, le système amortisseur est réalisé à partir d'éléments structurels reliés entre eux par des assemblages rotatifs qui fonctionnent selon un principe d'amortissement à friction ou viscoélastique. Ce principe permet d'amortir le mouvement relatif entre différents éléments structurels. En particulier, le système amortisseur est utile pour les isolations de soubassement, par exemple lorsqu'il s'agit d'amortir le mouvement relatif d'un bâtiment ou d'une machine par rapport au soubassement, ou d'amortir le mouvement relatif des haubans d'un pont à haubans par rapport aux points d'ancrage respectifs de ces haubans dans le soubassement du pont.

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