Composite concrete metal encased stiffeners for metal plate...

E - Fixed Constructions – 02 – D

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E02D 29/045 (2006.01) E01F 5/00 (2006.01) E04B 1/32 (2006.01)

Patent

CA 2255903

A composite concrete reinforced corrugated metal arch-type structure comprises: i) a first set of shaped corrugated metal plates (78) interconnected in a manner to define a base arch structure with the corrugations extending transversely of the longitudinal length of the arch; ii) a second series of shaped corrugated metal plates (24) interconnected in a manner to overlay the first set of interconnected plates of the base arch, the second series of plates having at least one corrugation extending transversely of the longitudinal length of the arch with the troughs of the corrugation of the second series of plates secured to the crests of the first set of plates; iii) the interconnected series of second plates and the first set of plates define individual, transversely extending, enclosed continuous cavity (80) filled with concrete (86) to define an interface of the concrete enclosed by the metal interior surfaces of the second series of crests and first set of troughs; iv) the interior surfaces of the cavity for each of the first and second plates having means (96) for providing a shear bond at the concrete- metal interface to provide individual curved beams traversing the arch whereby the structure provides positive and negative bending resistance and combined bending and axial load resistance to superimposed loads.

L'invention concerne une structure composite de type arc, en métal ondulé et béton armé comprenant: i) un premier ensemble de plaques métalliques ondulées, interconnectées de façon à former une structure de base en arc dont les ondulations s'étendent transversalement le long de l'arc; ii) une seconde série de plaques métalliques ondulées (24), interconnectées de façon à recouvrir le premier ensemble de plaques interconnectées de l'arc de base, la seconde série de plaques comportant au moins une ondulation s'étendant transversalement le long de l'arc, les creux de l'ondulation de cette seconde série de plaques étant fixés aux sommets du premier ensemble de plaques; iii) la série interconnectée de secondes plaques et du premier ensemble de plaques forment une cavité (80) continue, fermée, s'étendant transversalement, individuelle, remplie de béton (86), créant ainsi une interface de béton fermée par les surfaces intérieures métalliques de la seconde série de sommets et du premier ensemble de creux; iv) les surfaces intérieures de la cavité de chacune des première et seconde plaques comportent un élément (96) destiné à créer une adhérence par cisaillement au niveau de l'interface béton-métal en vue de former des barres incurvées individuelles traversant l'arc. Cette structure assure une résistance à la flexion positive et négative, ainsi qu'une résistance combinée à la flexion et à la charge axiale par rapport aux surcharges.

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