A form panel with girder(s) having an approximately u-shaped...

E - Fixed Constructions – 04 – G

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E04G 9/08 (2006.01) E04G 9/02 (2006.01) E04G 11/06 (2006.01) E04G 17/14 (2006.01)

Patent

CA 2158163

The form panel (1) has a lining skin (2) and girders (4) supporting the lining skin (2) on the side averted from the concrete, as well as possibly marginal webs (3) which run approximately parallel to the girders (4) and enable adjacent form panels (1) to be coupled and connected to one another. The girders (4) have an approximately U-shaped cross section, the U-limbs (5) departing from a U-crosspiece (6) to diverge slantwise and having at their free ends, where they are furthest apart from each other, oppositely directly fastening flanges (7) for joining to the lining skin (2). For the form panel to be extended on at least one side in continuation of the longitudinal direction of the girders (4), the girder (4) in question consists of at least two girder parts or portions (4a) and (4b) which are adjustable relative to each other in the longitudinal direction and embrace each other at least in an overlapping zone, whereby inside the cross section of the internal girder portion (4b) the U-limbs thereof form together with the lining skin (2) an angle of inclination which is more obtuse or larger than the corresponding angle of the girder portion (4a) embracing the girder portion (4b), or the angle between the two U-limbs of the internal girder portion (4b) is more acute than the corresponding angle between the U-limbs (5) of the external girder portion (4a). The angles are selected in such a way that, when the U-crosspieces (6) are contiguous, the clear width at the lining skin (2) between the U-limbs (5) of the internal girder portion (4b) is approximately the total width of the oppositely directed fastening flanges (7) smaller than the clear width at the same location between the U-limbs (5) of the external girder portion (4a), so that when the lining skin (2) is level the fastening flanges (7) of both girder portions lie side by side in the same plane (Fig. 1).

Un panneau de coffrage (1) comporte une chemise de coffrage (2) et des supports (4) qui soutiennent la chemise de coffrage du côté opposé au béton, ainsi qu'éventuellement des entretoises marginales (3) approximativement parallèles aux supports (4). Des panneaux de coffrage (1) adjacents peuvent être accouplés et assemblés les uns aux autres. Les supports (4) ont une section transversale approximativement en U. Les branches (5) du U s'écartent en biais l'une de l'autre, depuis une entretoise transversale. A leurs extrémités libres où leur écart mutuel est le plus important, les branches du U comportent des brides de fixation (7) permettant de les relier à la chemise de coffrage (2). Afin de prolonger au moins d'un côté le panneau se trouvant dans le prolongement du sens d'extension longitudinale des supports (4), chaque support (4) se compose de deux parties ou de deux sections (4a et 4b), déplaçables l'une par rapport à l'autre et qui se chevauchent du moins dans une zone de recouvrement. A l'intérieur de sa section transversale, l'angle d'inclinaison formé par les branches en U de la section (4b) située à l'intérieur et par la chemise de coffrage (2) est plus obtus ou plus grand que l'angle correspondant de la section (4a) de recouvrement, ou bien l'angle situé entres les deux branches du U de la section (4b) intérieure est plus aigu que l'angle correspondant situé entre les branches du U (5) de la section (4a) située à l'extérieur. Les angles sont choisis de manière à ce que lorsque les entretoises transversales en U (6) sont adjacentes, la largeur intérieure entre les branches du U (5) de la section (4b) intérieure, sur la chemise de coffrage (2), soit inférieure de la largeur totale des brides de fixation (7) écartées l'une de l'autre, à la largeur intérieure de la section (4a) extérieure au même endroit, de manière à ce que les brides de fixation (7) des deux sections se trouvent à côté l'une de l'autre dans le même plan, lorsque la chemise de coffrage (2) est plane.

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