FR2565280A1

FR2565280A1 - Device for fixing shuttering panels, shuttering and shuttering method as well as element for anchoring to the ground

Info

Publication number: FR2565280A1
Application number: FR8506904A
Authority: FR
Original assignee: Individual
Current assignee: Individual
Priority date: 1984-05-29
Filing date: 1985-05-07
Publication date: 1985-12-06
Anticipated expiration: 2005-05-07
Also published as: CH666075A5; ATA109485A; DE3512768A1; FR2565280B1; IT8520939A0; AT390112B; IT1185595B

Abstract

The device 1 for holding, in a removable manner, shuttering panels 4, comprises a nesting connection 12, 15 and a locking key 21. One of the faces 23 of the key moves, during the clamping movement, parallel to the exterior surface of the shuttering panel to be held. One of the anchoring elements 8 is intended to be embedded in the concrete, the second element 14 being intended to receive an to guide the key 21. The lost element (permanent form) 8 is constituted by an elongate upright 8 bearing a nesting tube 12 and the second element is composed of a stirrup (U-shaped) member 14, an upright 15 of which is intended to receive the tube 12. The second upright 17, which is inclined in the direction of the first upright 15, acts as a bearing surface for the key 21 whose surface 23 opposite the bearing surface is intended to hold and to bear on a panel 4. This device makes it possible to produce shuttering and assemblies of scaffolding components in a significantly shorter time and without perforating the shuttering panels.

Description

DISPOSITIF POUR LA FIXATION DE PANNEAUX DE COFFRAGE,
COFFRAGE ET PROCEDE DE COFFRAGE
AINSI QU'ELEMENT D'ANCRAGE AU SOL
La présente invention concerne un dispositif de fixation amovible pour maintenir des panneaux de coffrage, un coffrage et un procédé de coffrage, et a également trait à un dispositif d'ancrage au sol, subsistant après usage dans le béton, pour ledit dispositif.DEVICE FOR FIXING FORMWORK PANELS,
FORMWORK AND FORMWORK METHOD
AS WELL AS GROUND ANCHORING ELEMENT
The present invention relates to a removable fixing device for holding formwork panels, a formwork and a formwork method, and also relates to a ground anchoring device, remaining after use in concrete, for said device.

Pour réaliser le coffrage des arrets latéraux d'éléments de construction, en particulier de sols en béton et éléments similaires, le panneau de coffrage, qui doit être en général disposé d'aplomb, destiné au coffrage d'un arrêt latéral, est maintenu au moyen d'une liaison vissée dans un organe de support qui est noyé dans le béton. Ce procédé exige beaucoup de temps, et l'engagement du filetage de la vis dans celui de l'écrou est délicat, puisque celui-ci n'est pas directement visible. To form the side stops of construction elements, in particular of concrete floors and similar elements, the formwork panel, which must be generally plumb, intended for the formwork of a side stop, is kept at by means of a connection screwed into a support member which is embedded in the concrete. This process is very time consuming, and the engagement of the thread of the screw with that of the nut is delicate, since the latter is not directly visible.

La présente invention s'est fixé pour but de réaliser un dispositif pour maintenir de tels panneaux de coffrage, dispositif qui permet de réaliser des coffrages en un temps sensiblement réduit, sans avoir à perforer les panneaux de coffrage. The present invention has set itself the aim of producing a device for holding such formwork panels, a device which makes it possible to produce formwork in a substantially reduced time, without having to perforate the formwork panels.

Le dispositif selon l'invention est caractérisé, pour atteindre ce but, en ce qu'il comprend une liaison par emboltement et une clavette de blocage. The device according to the invention is characterized, to achieve this object, in that it comprises a connection by embolement and a locking key.

Fait en outre partie de l'invention un coffrage caractérisé en ce que le panneau de coffrage, qui pend sous son propre poids lorsqu'il est sans support, est maintenu en appui au moyen de la clavette sur sa face extérieure contre des pièces d'écartement qui sont pour leur part maintenues sur la pièce à noyer dans le béton afin de serrer et de maintenir en particulier par coincement le panneau entre les pièces d'écartement et l'une des faces de la clavette. Part of the invention is also a formwork characterized in that the formwork panel, which hangs under its own weight when it is unsupported, is held in abutment by means of the key on its outer face against pieces of spacing which are for their part maintained on the part to be embedded in the concrete in order to clamp and to maintain in particular by wedging the panel between the spacing parts and one of the faces of the key.

L'invention comprend également un procédé de coffrage qui est caractérisé en ce que le panneau de coffrage est maintenu serré par coincement. The invention also includes a formwork process which is characterized in that the formwork panel is held tight by wedging.

L'invention va maintenant etre décrite plus en détail, à titre d'exemple nullement limitatif, en référence aux dessins annexés dans lesquels:
- la figure 1 est une vue schématique de côté montrant un plafond à façonner par bétonnage, comportant un arrêt latéral et pourvu d'un coffrage monté, vu de coté;
- la figure 2 est une vue schématique de côté, représentant la clavette de serrage du dispositif de la figure 1;
- la figure 3 est une vue de dessus de la clavette de serrage de la figure 2;
- la-figure 4 est une vue de côté montrant l'étrier du dispositif selon la figure 1;
- la figure 5 est une vue de dessus montrant l'étrier selon la figure 4; et
- la figure 6 est une vue de dessus montrant l'élément de sol à emboitement du dispositif.The invention will now be described in more detail, by way of non-limiting example, with reference to the accompanying drawings in which:
- Figure 1 is a schematic side view showing a ceiling to be shaped by concreting, comprising a lateral stop and provided with a mounted formwork, seen from the side;
- Figure 2 is a schematic side view, showing the clamping key of the device of Figure 1;
- Figure 3 is a top view of the clamping key of Figure 2;
- Figure 4 is a side view showing the stirrup of the device according to Figure 1;
- Figure 5 is a top view showing the stirrup according to Figure 4; and
- Figure 6 is a top view showing the interlocking floor element of the device.

Le dispositif 1 pour fixer des panneaux de coffrage ou des planches d'échafaudage, en particulier des panneaux de coffrage latéral 4, est représenté en vue latérale sur la figure 1, prêt à fonctionner, au sens que le dispositif, tel qu'il est représenté, est maintenu sur le panneau de coffrage 3 d'un plafond au moyen d'éléments d'écartement 26 et de clous 28. Le plafond de béton à couler 6 est également esquissé en traits interrompus. The device 1 for fixing formwork panels or scaffolding boards, in particular lateral formwork panels 4, is shown in side view in FIG. 1, ready to operate, in the sense that the device, as it is shown, is held on the formwork panel 3 of a ceiling by means of spacers 26 and nails 28. The concrete ceiling to be poured 6 is also sketched in broken lines.

Le dispositif 1 comprend un élément d'ancrage au sol 8 qui est constitué par un tube de section carrée 9 en acier pourvu de traversées 10 pour recevoir des clous 28. Sur le tube carré 9 est fixé par soudage un fer carré 12 formant un angle de 909, cette valeur pouvant être différente. Le dispositif comprend en outre un étrier d'emboîtement 14 comportant un montant 15 qui s'adapte à l'intérieur du tube carré 12, ainsi qu'une traverse 16 et un montant de calage 17 qui sont soudés entre eux comme le montre la figure 4. Le montant de calage 17 porte en outre des règlettes de guidage latéral 19 pour guider une clavette 21, ces règlettes n'étant toutefois pas absolument indispensables. The device 1 comprises a ground anchoring element 8 which is constituted by a square section tube 9 made of steel provided with bushings 10 to receive nails 28. On the square tube 9 is fixed by welding a square iron 12 forming an angle of 909, this value being able to be different. The device further comprises a nesting stirrup 14 comprising an upright 15 which fits inside the square tube 12, as well as a cross-member 16 and a wedging upright 17 which are welded together as shown in the figure 4. The setting amount 17 further carries lateral guide bars 19 for guiding a key 21, these bars are however not absolutely essential.

L'étrier d'emboîtement 14 sert notamment à recevoir la clavette 21 pourvue d'une surface de guidage 22 et d'une surface de serrage 23, cette dernière étant de préférence pourvue d'un fer plat 24 soudé. The interlocking stirrup 14 is used in particular to receive the key 21 provided with a guide surface 22 and a clamping surface 23, the latter preferably being provided with a welded flat iron 24.

Le montage du dispositif 1 pour poser un coffrage est réalisé en disposant l'élément d'ancrage au sol 8 sur des éléments d'écartement 26 qui reposent pour leur part sur le panneau de coffrage de plafond 3. Des clous 28 sont ensuite passés dans les traversées 10 et enfoncés dans le panneau de coffrage 3 en traversant les éléments d'écartement 26. L'étrier 14 est emmanché par son montant 15 dans le tube carré 12 de l'élément de sol à emboîtement 8, et le panneau de coffrage à fixer est mis en appui, de la manière représentée sur la figure 1, contre les éléments d'écartement 26 qui sont eux-memes fixés à la face latérale correspondante du tube carré 12. Les panneaux de coffrage latéral 4, maintenus à la main, sont alors mis en appui contre les éléments d'écartement 26 en enfonçant la clavette 21, et maintenus par coincement de cette manière. Le coulage du plafond en béton 6 est effectué ensuite, le décoffrage étant réalisé en éjectant la clavette 21 vers le haut, en enlevant le panneau de coffrage latéral 4 et en dégageant l'étrier d'emboîtement 14 en vue d'une future utilisation avec un autre élément de sol à emboîtement 8. The mounting of the device 1 for placing a formwork is carried out by placing the anchoring element on the ground 8 on spacing elements 26 which for their part rest on the ceiling formwork panel 3. Nails 28 are then passed through the bushings 10 and driven into the formwork panel 3 by crossing the spacer elements 26. The stirrup 14 is fitted by its upright 15 into the square tube 12 of the interlocking floor element 8, and the formwork panel to be fixed is supported, as shown in Figure 1, against the spacer elements 26 which are themselves fixed to the corresponding side face of the square tube 12. The side formwork panels 4, held by hand , are then pressed against the spacer elements 26 by depressing the key 21, and held by wedging in this way. The concrete ceiling 6 is then poured, the formwork being produced by ejecting the key 21 upwards, removing the side formwork panel 4 and releasing the interlocking stirrup 14 for future use with another interlocking floor element 8.

Le coffrage effectué à l'aide de ce dispositif est réalisé très rapidement, et les temps de coffrage ainsi obtenus sont sensiblement réduits, d'environ 5 fois, par rapport aux temps nécessaires jusqu'alors pour le coffrage au moyen de tels panneaux de coffrage latéral. The formwork carried out using this device is carried out very quickly, and the formwork times thus obtained are significantly reduced, by approximately 5 times, compared to the times previously required for formwork by means of such formwork panels. lateral.

Claims

1. Device for detachably holding formwork panels (4), characterized in that it comprises a socket connection (12; 15) and a locking key (21).

2. Device according to claim 1, characterized in that one of the surfaces (23) of the key moves, during the locking movement, parallel to the outer surface of the formwork panel to be maintained.

3. Device according to claim -1 or 2, characterized in, that one of the anchoring elements (8) is intended to be embedded in the concrete, and the other element (14) is intended to receive and sliding guide the key (21).

4. Device for holding formwork panels (4) according to any one of the preceding claims, characterized in that it comprises an elongated upright (8) provided with an interlocking tube (12) fixed on the latter as well that an interlocking stirrup (14) one of the uprights (15) of which is intended to be inserted into the tube (12), the second upright (17), which is inclined towards the free end of the first upright ( 15), serving as a support member for a locking key (21) whose surface (23) opposite the support surface is provided to maintain and support a formwork panel (4).

5. Formwork for shuttering the lateral stop of a building element, in particular a concrete floor, according to any one of the preceding claims, characterized in that the formwork panel (4), which hangs preferably under its own weight when it is without support, is held in abutment by means of the key (21) on its outer face against spacers (26) which are for their part held on the part (8) to be drowned in concrete in order to clamp and hold in particular by wedging the panel (4) between the spacers (26) and one of the faces (23) of the key.

6. Method for holding shuttering panels according to any one of the preceding claims, characterized in that it consists in clamping by clamping said shuttering panels (4).

7. A method for shuttering the lateral stop of a building element, in particular a concrete floor, according to any one of the preceding claims, characterized in that it consists in detachably holding in their position formwork panels (4) by gripping them in the manner of a clamp by their two main faces (Figure 1).

8. Anchoring element to the ground, remaining in the concrete after use, intended for the device according to any one of the preceding claims for detachably holding formwork panels, characterized in that it comprises an arm (9) intended to be fixed to a formwork panel already in place, and an interlocking tube (12) arranged transversely to said arm, serving to set up a connection by interlocking with the stirrup (14).