Pneumatic structural component

E - Fixed Constructions – 04 – H

Patent

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Details

E04H 15/20 (2006.01) E04C 3/00 (2006.01)

Patent

CA 2374645

The pneumatic structural component according to the invention comprises an essentially cylindrical airtight hollow body (1) with radius r h and length L h and two caps (5), which is made from a flexible, but low-stretch, preferably textile material. The hollow body (1) on its side exposed to the loading it carries a pressure rod (2) of length L h, which is secured against sideways buckling and at both its ends carries a node (3) At least one pair of tension elements (4) is joined to the pressure rod (2) in the nodes (3). The tension elements (4) run screw-shaped and contra-rotating in a whole number of circuits around the hollow body (1) and intersect each other at positions (8), which lie on a surface line (7) opposite to the pressure rod (2). The pressure rod (2), the surface line (7) and the longitudinal axis of the hollow body, referenced A define a plane E in which the engaging loads and forces lie.

L'invention concerne un élément constitutif pneumatique comprenant un corps creux (1) étanche à l'air sensiblement cylindrique de rayon rh et de longueur Lh et deux capuchons (5). Ledit corps creux se compose d'un matériau flexible, néanmoins peu extensible, de préférence textile. Sur sa face exposée à la charge, ledit corps creux porte une tige de compression (2) de longueur Lh, qui est montée sur le corps creux (1) de manière à ne pas être soumise au flambage latéral et porte à ses deux extrémités, dans chaque cas un bouton (3). Dans ces boutons (3), au moins une paire d'éléments de traction (4) est reliée par liaison de force à la tige de compression (2). Les éléments de traction (4) s'étendent de manière hélicoïdale et en sens inverse, en un nombre entier de tours autour du corps creux (1) et se coupent en des points (9) se trouvant sur une génératrice (7) du corps creux (1) opposée à la tige de compression (2). La tige de compression (2), la génératrice (7) et l'axe longitudinal du corps creux (1), défini sous l'appellation de <u>A</u>, définissent un plan <u>E</u> dans lequel se trouvent également les charges et les forces en action.

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