DE2611843A1 - Double shell reinforced concrete plates formwork - has panels with spacing feet ensuring connection between parallel concrete shells - Google Patents

Abstract

The formwork is used for making of double shell concrete components preferably from reinforced concrete. The plates are used for example as ceiling or wall plates. The double shell arrangement is held together by bridging reinforcing elements or by other connecting components. The hollow concrete plates can be made rapidly and economically and also accurately. The application of formwork and its removal is greatly facilitated. The two formwork frames (1, 2) are separated from each other and they are held apart by the spacing feet (3) fastened on one of the two formwork frames. Additional frame components can be used. Additional heat or other damping or insulating layers can be also inserted. Especially large and strong plates can be made.

Description

Formwork for the production of double-walled

Ceiling and wall panels made of concrete The invention relates to a two-part Formwork for the production of double-sided concrete parts, so-called double concrete slabs, preferably made of reinforced concrete, mostly ceiling or wall panels, dis of two parallel or non-parallel and spaced apart, exist via the reinforcement or concrete shells connected to one another in some other way by pouring the concrete for the lower concrete shell into the lower formwork frame, where the concrete is shaken and distributed if necessary, whereupon the lower Frame formwork brought in from above together with the prefabricated reinforcement leans on the lower part or the base with spacer feet and the reinforcement sinks into the fresh concrete of the lower concrete shell. After that or beforehand, the fresh concrete for the upper concrete shell is poured in and vibrated.

Such partially prefabricated double concrete slabs are used as ceiling slabs or used as wall panels in civil engineering, etc., where in the area of Reinforcement of the space between the two concrete shells also as a rib Concrete can be poured. These are then so-called hollow rib ceilings or hollow rib walls. Wall panels of the specified construction are usually used as partially prefabricated wall panels, d. H. At the construction site, the space between the two concrete shells can be filled with in-situ concrete to be shed.

The production of such partially prefabricated double concrete slabs is conventionally done with turning and folding devices, which after hardening the one concrete shell on one pallet of the device this over the one with concrete Freshly poured other concrete shell on the other pallet of the device like a flap lead, whereby the already introduced into and out of the first concrete shell outstanding reinforcement sinks into the fresh concrete of the second concrete shell and anchored there when the concrete hardens. This ulende process is various with hoists located on swivel hangers or with hydraulic or other types of equipment moved folding pallets brought about. The main disadvantage here is that up to Always turn the upper concrete shell and wait for it to harden. A Another disadvantage is the fact that during and after passing the upper Dead center during the folding or turning process poses considerable dangers for bystanders by falling of the possibly not completely hardened or improperly attached brick bowl grows up. In addition, care must be taken to ensure that the upper concrete shell is lowered precisely onto the lower concrete shell.

Finally, these known manufacturing facilities are because of required lifting and turning device comparatively complex and expensive.

From OS 2111455 a Verfahrsn has also become known that the Seeks to eliminate the disadvantages mentioned by the fact that both concrete shells on top of each other as it were, floor-to-ceiling within a fringing that surrounds both concrete shells are manufactured, but the introduction of the reinforcement and the shuttering is for the upper concrete shell very expensive and complicated as there.

Corresponding stripping or demolding due to difficult removal of the individual parts.

The invention avoids these disadvantages. It is based on the task to propose a formwork with which the manufacture of concrete slabs of the specified Art quickly and inexpensively and also dimensionally accurate, congruent and plane-parallel, if desired, is possible, whereby the shuttering and demoulding is made much easier will.

To solve this problem, the invention is characterized in that that the fresh concrete for the lower concrete shell in a lower formwork frame is introduced and then the upper formwork frame, in which the reinforcement and the horizontal formwork surfaces have already been inserted above the untare Formwork frame is guided and used in suitable adjustment devices, wherein the reinforcement sinks into the concrete of the lower concrete shell and finally the Friechbeton can be applied to the upper concrete shell if this is not the case has already happened before, after which the two concrete shells have hardened at the same time the formwork surfaces can be pulled out to the side and by lifting them out the upper and then or at the same time the lower formwork frame the finished Double concrete slab is demolded.

The otherwise necessary additional work step of the is not required Turning and folding the upper onto the lower concrete shell with the described Disadvantages, because according to the invention with the help of two formwork frames arranged in parallel an almost simultaneous pouring of the concrete in the final position of the concrete shells is possible, so no movement of the freshly filled concrete shells in front of their joint More curing is required.

It also eliminates the difficult and complicated introduction of Reinforcement and formwork surfaces and also the removal of these Parts from the hardened double concrete slab as a result of the two-part structure according to the invention the entire formwork.

But it also proves to be an essential advantage that through the two Formwork frames have certain bevels or circumferential bevels required for assembly on the building Grooves on or near the side surfaces of the two concrete shells by means of appropriate Forming the formwork frames can be poured, which in turn, too easier removal of the finished double concrete slab from the two formwork frames being able to lead.

With the formwork according to the invention, hollow rib ceilings and can -walls are made. For this purpose, the formwork has to be inserted to add side panels between the two concrete shells, between which When filling the fresh concrete for the upper concrete shell, a concrete rib in the monolithic composite results. This should preferably be in the area of between the two concrete shells located Uerbereinforcement lie.

With the help of the formwork according to the invention, any recesses can also be made be poured into the concrete shells using conventional auxiliary formwork.

The invention is illustrated below using an exemplary embodiment explained in more detail, from which further features result. The figures show schematically the individual components of the formwork according to the invention and the corresponding Assemblies.

Fig. 1 shows the formwork frame from the upper 1 and the lower Formwork frame 2 assembled total formwork according to the invention without concrete and without reinforcement.

For clarification, the items are separated in Fig. 2 to 5 shown: Fig. 2 shows the upper formwork frame 1 together with the spacer feet 3a and 3b. Fig. 3 shows the formwork surfaces 4a, 4b, 4c made of wood, sheet metal or other formwork material such as expanded metal or similar material, which is also optionally available in the finished concrete part can be left.

In Fig. 4 is one of the holding tubes 5 with the lateral holding tabs 6a and 6b shown. This type of fastening according to FIG. 4 is proposed as a proposal.

5 shows the lower formwork frame 2.

In Fig. 6, the upper formwork frame 1 is used together with the Formwork surfaces 4a, 4b and 4c shown, as well as the retaining tubes with the lateral ones Retaining straps 6a and 6b in the assembled state including reinforcement, consisting of an upper proposed area reinforcement 7a and a lower one 7b, as well as the intermediate webs Ba and 8b. The upper formwork frame 1 and the lower Formwork frames 2 are ready and can in Fig. 6 for receiving Friachbeton e can be stacked, regardless of whether the fribch concrete is used for the top 5 formwork frame 1 before or after the formwork frame is placed on top of one another is introduced.

Fig. 7 shows the from the upper formwork frame 1 and the lower Formwork frame 2 existing gas formwork according to the invention including the poured concrete for the upper and lower concrete shell 9c and 9b.

In Fig. 8, the finished double concrete slab is shown, which by corresponding stripping becomes free. Stripping is done through if possible Removing or leaving the formwork surfaces 4a, 4b and 4c (see. Fig. 7), the Lifting off the upper formwork frame 1 and lifting out the finished double concrete slab from the lower formwork frame 2.

Another possible application is shown in FIG. 9, where the according to the invention Formwork for producing a narrower concrete element is used by subframe parts 10a and 10b can be used as storage. The position of these subframe parts 10a and 1Ob can be set as required and corresponds to the required dimensions of the narrower concrete element. Fi9. 9 accordingly shows only an optional embodiment.

Fig. 10 shows a variant with concrete intermediate webs 11a and 11b, the can be formed by inserted shuttering panels 12a, 12b, 12c and 12d.

In Fig. 11 is another applicability of the formwork according to the invention shown, with a thermal or other insulation or

Insulating layer 13 is inserted without the formwork according to the invention or the application of which is significantly changed or disrupted.

Fig. 12 shows the lower formwork frame 2 with an optional below attached formwork panel 14 to the inventive formwork from a smooth-flat To make document independent.

Fig. 13 shows a perspective view of the invention Formwork with an optional arrangement of the individual parts 1 to 6.

Furthermore, the formwork according to the invention allows the lower concrete shell 9b by inserting a profile mat or the like. And on top of the Seton shell 9a a surface design in the case of other suitable profiling measures Wish to make certain visible surfaces. Likewise, there are other known measures to achieve exposed aggregate concrete surfaces, among other things.

Surface designs possible.

As already mentioned, the formwork according to the invention offers the possibility of by bevels, grooves or the like. On the upper and / or lower formwork frame 1 or 2 corresponding bevels, grooves or other profiles in the area of the To achieve the outer edge of the two concrete shells 9a and 9b of the double concrete slab and at the same time to achieve easier demolding (not shown).

The formwork according to the invention also offers the possibility of wider or more stable double concrete slabs with more than two intermediate webs 8 or narrower to produce with only one intermediate web 8. All this requires is a change of the formwork surfaces 4 in terms of dimensions and number.

The hardening of the two concrete shells 9a and 9b takes place simultaneously. Stripping is done in the manner indicated. All parts of the invention Formwork can be used repeatedly if it is not like the Formwork surfaces 4 can optionally be left in the finished double concrete slab. The formwork according to the invention also guarantees the exact dimensional equality of all manufactured concrete parts.

The formwork according to the invention includes all items made of wood, steel, plastic or other (Ilsterislien, the individual parts each can also consist of different materials.

Claims (7)

Claims 1. Formwork for the production of double-walled concrete parts preferably made of reinforced concrete, e.g. ceiling or wall panels, which consist of two under Spaced apart, over the reinforcement or other connecting parts interconnected concrete shells are made with two spaced apart Formwork frame, formwork surfaces with passage openings belonging to the formwork frame for the intermediate webs of the reinforcement or other connecting parts and supports for the formwork area of the upper formwork frame d a d u r c h g e k e n n z e i c h n e t that the two formwork frames (1,2) are separated from each other and by means of spacer feet attached to at most one of the two formwork frames (1,2) (3) are kept at a distance. 2. Formwork according to claim 1 d a d u r c h g e k r n n -z e i c h n s t, d B ß additional subframe parts (10) are provided. 3. Formwork according to claim 1 and 2 d a d u r o h g t k e n n -z e i c h n s e t r d s ß the upper and / or lower. Formwork frame (1,2) and the fastenings the formwork surfaces (4) are designed so that additional heat or other Insulating or insulating layers can be inserted 4. Formwork according to Claims 1 to 3 d a d u r c h g o k e n n z e i c h n e t, d a ß additional formwork surfaces (12) can be used. 5. Formwork according to claim 1 to 4 d a d u r c h g e k k n n n -z e i h n e t that the upper formwork frame (1) and / or the lower formwork frame (2) are provided with bevels, grooves or other profiles. 6. Formwork according to claim 1 to 5 d a d u r # h g e k e n n -z ei c h n e t, that the spacer feet (3) optionally on the upper formwork frame (1) or the lower formwork frame (2) are attached or unsecured between Both formwork frames (1,) are inserted in between, whereby the two formwork frames (1,2) Can be brought to different distances and the number and arrangement the spacer feet (3) are not fixed. 7. Formwork according to claim 1 to 6 d d # d u r o h g # k Z n n -z e i h n e t that there was a shuttering sheet under the lower shuttering frame (2) (14) is attached.