FI57295C - FOERBUNDSPLATTPROFIL - Google Patents

Description

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Pattnt · och raglttantyralMn '1 AmOkan uthgd oeh utUkrtfUn puMlcvrad 31.03 * 00 (32) (33) (31) ^ »4 ·« τ molkuut-luflH priorlut (71) (72) Pentti Wilhelm Vainionpää, 1 + 0950 Muurame, Finland FIELD OF THE INVENTION corrugated folds # of the same metal plate directed upwards from the plane of the composite plate profile, the walls of which are completely adjacent and perpendicular to the plane of the profile and with adhesive dents.

Composite slab profiles of this type are already known, for example, from German application publication 2 252 966. They are used in the casting of concrete intermediate bases instead of boarding. As the concrete hardens, the profile anchors to it and remains permanently in place. The advantages over boarding are, for example, that the lower support required during casting is less space-intensive, so that there is free working space under the slab. The profile on the lower surface of the finished slab receives tensile stresses, which is why the thickness of the slab can be reduced. For tensile stresses in the plane of the slab, there are gripping dents in the upward corrugations of 2,57295 composite slab profiles. Adhesive dents come in different shapes and designs. The difficulty has been to get them to stick to the concrete well enough. They are usually either too weak or too technically difficult to manufacture.

The object of the present invention is to eliminate the above-mentioned drawbacks and to provide a new type of slab profile. The composite slab profile according to the invention is characterized in that the adhesive dents are recesses printed downwards from the top of the corrugations, where the corrugation has spread to the sides and that the walls of the corrugations are also completely adjacent to the recesses.

In the composite slab profile according to the invention, the adhesive dents can be easily pressed into the upper edge of the corrugations in one work step in connection with the production of the composite slab profile. The corrugation made in this way adheres well to the concrete poured around it, because the corrugation has spread towards the sides at the adhesion dent. The corrugation with its adhesive dents retains its shape better than previous solutions, because the walls of the corrugations are also completely adjacent to the recesses and there are thus no retractions from the cavity at any point inside the corrugations.

The invention will now be described by way of example with reference to the accompanying drawing, in which

Fig. 1 shows a perspective cross-section of the composite plate.

Fig. 2 shows a section taken along the line II-II in Fig. 1.

Fig. 3 shows a section taken along the line III-III in Fig. 1.

When preparing the intermediate base, the composite slab profiles 1 are placed side by side on a few support beams (not shown), which beams are in turn supported on the base. The profiles are tied together with either rivets or spot welding. As can be seen from Figure 1, the profile 1 has profile cavities 2 with a trapezoidal cross-section directed upwards from its plane.

Between the profile cavities there are corrugations 3 of the same metal plate, parallel to them, directed upwards from the plane of the composite plate profile 1, the walls of which are completely adjacent and perpendicular to the plane of the profile. At the top of the corrugations 3 there are depressions 4 pressed downwards, which act as adhesion dents in the concrete 5 3 57295 and at which the corrugation has spread towards the sides. The walls of the corrugations are also right next to each other at the recesses.

Once the composite slab profiles 1 have been placed in place, the necessary installation work is carried out, such as electrical piping and closing the edges of the through-openings so that the concrete mass 5 to be poured cannot flow through them.

Once the concrete mass 5 has been cast and hardened, the composite slab profile is firmly anchored in the concrete. Infection dents play a key role in anchoring 4.

It will be apparent to those skilled in the art that various embodiments of the invention may vary within the scope of the claims set forth below.