Pneumatic two-dimensional structure

Details Pneumatic two-dimensional structure Pneumatic two-dimensional structure

E - Fixed Constructions

04

H

E04H 15/20 (2006.01)

Patent

CA 2543798

The invention relates to a pneumatic plate element (1) consisting of a hollow body (3) that can be impinged upon with a pressure medium having overpressure p. Said hollow body is located between two pressure/tension elements (2) that are connected to one another by their ends and is made of a flexible membrane (9). When transversal load is exerted on the plate element (1) placed on two supports (17) with load force F, the top pressure/tension element (2, 7) is subjected to pressure and the bottom pressure/tension element (2, 8) is subjected to tension. Prestressed tension elements (4) placed at a distance a traverse in channels the hollow body (3) between the pressure/tension elements (2, 8). The tension elements (4) are prestressed by the hollow body (3) separating the tension elements (2). The connections (6) operate as fictitious fixed intermediate supports and stabilize the pressure/tension element (2, 7) submitted to pressure in order to prevent buckling. Two-dimensional plate elements (1) can be particularly used for building roofs of lightweight constructions.

Elément panneau pneumatique (1) constitué d'un corps creux (3) pouvant être soumis à l'action d'un milieu de pression se trouvant à une surpression p. Ledit corps, qui se trouve entre deux éléments de pression / traction (2) reliés au niveau de leurs extrémités, est constitué d'une membrane souple (9). En cas de sollicitation transversale appliquée sur l'élément plat (1) reposant sur deux supports (17) par la force <U>F</U>, l'élément de pression / traction supérieur (2, 7) subit une pression et l'élément de pression / traction inférieur (2, 8) subit une traction. Entre les éléments de pression / traction (2), des éléments de traction (4) situés à un écart a les uns des autres et soumis à une pré-tension traversent le corps creux (3) dans des canaux (5). Les éléments de traction (4) sont placés en état de pré-tension par le corps creux (3) écarté par les éléments de traction (2). Les liaisons (6) agissent comme des supports intermédiaires solides fictifs et stabilisent l'élément de pression / traction (2, 7) soumis à la pression contre le flambage. Lesdits éléments panneaux (1) plats peuvent être utilisés en particulier pour la fabrication de toits légers.

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