Flared leg precast concrete bridge system

Details Flared leg precast concrete bridge system Flared leg precast concrete bridge system

E - Fixed Constructions

01

D

E01D 1/00 (2006.01)

Patent

CA 2650172

A concrete building system includes a set of parallel spaced apart strip footers and one or more precast concrete sections supported by the footers in a predetermined alignment. Each precast concrete section has a top slab integrally connected to a pair of equally flared legs. Each leg depends from an end of the top slab at an effective flare angle to form a corner. The precast section includes haunch sections formed between the top slab and each leg resulting in a corner thickness greater than the uniform thickness of the angled leg to which it is integrally formed and the top member. The length of the effective span of each section varies between 60 and 90 percent of the distance between the bottom-of-leg span. The sections can be used to construct bridges, culverts, underground storage units, fluid detention units and dam structures.

Système de construction d'ouvrages en béton comprenant un ensemble de semelles filantes parallèles et espacées ainsi qu'une ou plusieurs sections de béton prémoulées supportées par les semelles selon un alignement prédéterminé. Chaque section de béton prémoulée comporte une dalle supérieure entièrement reliée à une paire de pieds évasés de même inclinaison. Chaque pied est attaché à une extrémité de la dalle supérieure selon un angle évasé pour former un coin. La section préoulée comprend des reins de voûte entre la dalle supérieure et les pieds, l'épaisseur du coin est ainsi supérieure à celle du pied et de l'élément supérieur qui le forment. La longueur de la portée utile de chaque section varie de 60 à 90 % de la distance séparant l'extrémité inférieure des pieds. Les sections peuvent servir à la construction de ponts, de ponceaux, d'entrepôts souterrains, d'ouvrages de rétention de liquides et de barrages.

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