Method and device for applying pretensed tension-proof...

E - Fixed Constructions – 04 – C

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Details

E04C 5/07 (2006.01) E04C 5/08 (2006.01) E04G 23/02 (2006.01)

Patent

CA 2321896

According to the invention, lamellar, fibre-reinforced plastic strips (9) can be used to reinforce a linearly expanded or flat construction part (7) having a support function against any bending stress to which it is exposed. These strips are usually applied to the construction (7) from the outside, or from the inside in the case of hollow structures, and fixed by means of an adhesive. The lamellar strips (9) are pretensed with the tensioning means (15, 16) of the tension device, treated with adhesive in a pretensed state, and then moved to the area to be treated together with the tension device. The tension device is provisionally fixed to the construction (7) with displaceable fixing devices (3) and pressed against said construction. Thereafter the lamellar strips (9) are pressed against the construction (7) by means of an air bag (6) or air hose until the adhesive has hardened.

Selon l'invention, pour renforcer un élément de construction (7) étendu en longueur ou plat, ayant des fonctions de support, de façon qu'il résiste aux forces de flexion auxquelles il est exposé, on peut utiliser des bandes de matière plastique (9) du type lamellaire, renforcée par fibres. Ces bandes sont normalement approchées extérieurement, et également depuis l'intérieur en cas de structure creuse, de la construction (7) et fixées par adhésif. Les lamelles (9) sont prétendues au moyen des unités de tension (15, 16) du dispositif de tension, traitées, à l'état prétendu, avec de l'adhésif, puis approchées des zones à renforcer avec le dispositif de tension. Le dispositif de tension est fixé provisoirement à la construction (7) avec des dispositifs de fixation (3) pouvant être déplacés, puis pressé contre ladite construction. En outre, la lamelle (9) est pressée contre la construction (7) avec de l'air comprimé, au moyen d'un sac à air (6) ou d'un tuyau à air, jusqu'à ce que l'adhésif ait durci.

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