Bridge structures

E - Fixed Constructions – 01 – D

Patent

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Details

E01D 19/02 (2006.01) E02D 31/08 (2006.01)

Patent

CA 2605437

A bridge structure, comprising: a deck (1) for supporting a load thereon; first and second abutments (13a, b) which support respective ends of the deck and bear a compressive load from backfill (5) at the respective outer sides thereof; and at least one displacement compensation unit (21) which is configured such as to accommodate longitudinal displacement of the deck and maintain a predeterminable longitudinal force between the abutments, wherein the at least one displacement compensation unit has a load-displacement characteristic which provides for a reduced rate of change in the longitudinal force with longitudinal displacement of the deck as compared to a conventional bridge structure which incorporates no displacement compensation unit.

L~invention décrit une structure de pont comprenant : un tablier (1) destiné à supporter une charge ; une première et une seconde culées (13a, b) qui supportent les extrémités respectives du tablier et une charge en compression exercée par un remblai (5) au niveau des extrémités extérieures respectives desdites culées ; et au moins une unité de compensation du déplacement (21), laquelle est configurée de façon à s~adapter au déplacement longitudinal du tablier et maintenir une force longitudinale prédéterminable entre les culées, ladite unité de compensation du déplacement possédant une caractéristique de déplacement de charge qui permet un taux réduit de changement de la force longitudinale lorsque le déplacement longitudinal du tablier varie, par rapport à une structure de pont traditionnelle ne comportant aucune unité de compensation du déplacement.

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