Steel-concrete hollow bodied slab or ceiling

E - Fixed Constructions – 04 – B

Patent

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Details

E04B 5/32 (2006.01)

Patent

CA 2576027

The invention relates to a steel-concrete hollow bodied slab or ceiling comprising concrete webs, which are arranged in between hollow bodies, and a reinforcing layer on top of the hollow bodies and a reinforcing layer underneath the hollow bodies, wherein a hollow body is embodied as a peripherally closed container which is devoid of any ascending force and which is open towards the bottom, whereby ventilation holes are provided in the covering wall thereof and the container comprises spacers. The aim of the invention is to obtain a low-cost hollow bodied slab/ceiling exhibiting good load-bearing behavior and an increased ability to discharge transversal forces according to local requirements. According to the invention, the concrete in at least one concrete web consists of high-tensile fibers and/or at least one steel strut, preferably a double wall anchor, and/or the hollow body which is devoid of ascendant forces has a conical or truncated pyramidal periphery whose uppermost end forms a dome-shaped arch.

L'invention concerne une dalle ou un plancher en béton armé à corps creux, comportant des parties jointives en béton placées entre les corps creux ainsi qu'une couche d'armature située au-dessus et au-dessous du corps creux. Un corps creux se présente sous la forme d'un contenant sans contre-pression, ouvert vers le bas et fermé sur sa périphérie, dans la paroi de recouvrement duquel sont prévus éventuellement des orifices d'aération, ledit contenant présentant des entretoises. L'objectif de l'invention est de créer une dalle ou un plancher à corps creux, économique, présentant un comportement favorable sous différentes sollicitations et une capacité à évacuer les forces transversales qui est améliorée en fonction des exigences locales. A cet effet, le béton d'au moins une partie jointive en béton présente des fibres résistant à la traction et/ou au moins un tirant en acier, de préférence une ancre à deux têtes et/ou le corps creux sans contre-pression présente une périphérie en forme de cône tronqué ou de pyramide tronquée, dont la partie terminale supérieure forme une voûte de type coupole.

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