EP1970501B1 - Method and device for setting a stop end to a reinforced slab-like concrete element - Google Patents

Abstract

The method involves casting and hardening a concrete element step-by step in two sections that are connected over a concrete reinforcement. An elongate stop end panel (10) is utilized for an edge-sided formwork plank of one of the section and weared after casting of the other section. The panel is partially bent or rolled around its longitudinal axis (15) and inserted between individual elements of the concrete reinforcement in a form that is bent or rolled around the longitudinal axis. The panel is unrolled and attached to the concrete reinforcement. Independent claims are also included for the following: (1) a stop end panel for manufacturing a reinforced, slab-like concrete element (2) an application of a stop end panel as a weared stop end panel between step-wise manufactured sections of a reinforced, slab-like concrete element.

Description

The invention relates to a method for producing a reinforced, plate-like concrete element, in particular a ceiling, a floor or a wall, according to the preamble of claim 1. It also relates to a formwork element for producing such a concrete element and a use of the Abschalelements.

In the step-by-step concreting of concrete floors or walls, the reinforcement from the section to be concreted must protrude into the space of the next section so that the sections can be connected to each other via the reinforcement. For the peripheral shells of the individual sections "lost" (i.e., left in the concrete after curing) elongated Abschalelemente be used.

Such Abschalelemente be eg in DE 90 17 003.2 U or in EP 093 697 , or in DE 8 224 716 U1 ,

The insertion of known Abschalelemente in the formwork proves to be difficult to impossible, since at this time already (at least partially) constructed reinforcement can be in the way.

It is therefore the object to provide a method which eliminates this problem, or a Abschalelement, which can be easily imported. This object is achieved by the method or the Abschalelement according to the independent claims.

According to the claim, therefore, the formwork element is introduced in a form bent or rolled along its longitudinal axis between individual elements of the reinforcement. As a result, it takes up relatively little space, so that it can be inserted in a simple manner from the side between the pre-assembled reinforcement, even if relatively little space between the reinforcing iron is available. After insertion the Abschalelement can then partially or completely bent or unrolled and secured in a suitable manner.

The invention is particularly suitable for buildings in which at least one reinforcing mesh is arranged on opposite sides of the concrete element. Here the shuttering element can form the formwork between the reinforcement nets.

A suitably configured Abschalelement has a web of flexible material, which is reinforced along its opposite longitudinal edges, and it can be bent or rolled up about its longitudinal axis. This bending should be reversible, i. it must be possible to unroll or deploy the formwork element in a simple manner (for example by hand). The web is at least partially made of glass fiber reinforced or carbon fiber reinforced plastic or glass fibers.

• Fig. 1 einen Abschnitt des Abschalelements,
• Fig. 2 einen Schnitt durch eine Schalungsanordnung quer zur Längsrichtung des Abschalelements beim Einführen des Abschalelements,
• Fig. 3 den Schnitt von Fig. 2 nach Befestigen des Abschalelements und Anbringen der seitlichen Schalungsbretter,
• Fig. 4 den Schnitt von Fig. 2 nach Einfüllen von Beton in den ersten Abschnitt und
• Fig. 5 den Schnitt von Fig. 2 nach Einfüllen von Beton in den zweiten Abschnitt.

Further preferred embodiments of the invention will become apparent from the dependent claims and from the following description of the invention with reference to FIGS. Showing:

• Fig. 1 a section of the Abschalelements,
• Fig. 2 a section through a formwork arrangement transverse to the longitudinal direction of the Abschalelements during insertion of the Abschalelements,
• Fig. 3 the cut of Fig. 2 after attaching the Abschalelements and attaching the side shuttering boards,
• Fig. 4 the cut of Fig. 2 after pouring concrete into the first section and
• Fig. 5 the cut of Fig. 2 after pouring concrete into the second section.

This in Fig. 1 Shawl 10 shown has a web 11 made of a flexible material. Preferably, the flexible material is a net of woven, knitted, welded or otherwise connected Fibers. The material used in the present embodiment is a glass fiber reinforced or carbon fiber reinforced Plastic, or it consists of glass fibers, so that it can withstand the static pressure of the concrete as well as possible and yet has a high flexibility.

Preferably, a network with a mesh size of 1 - 5 mm, in particular about 2.5 mm is used. It turns out that such a mesh size has a sufficient Abschalungseffekt and yet ensures a sufficiently intimate connection between the concrete adjacent sections.

The width A of the band or the Abschalelements 10 is the thickness of the concrete element to be created adapt. In most cases, the width A is at least 10 cm.

At its longitudinal edges 12, the web 11 is folded and sewn in two edge regions, so that pockets 13 are formed, in each of which a reinforcing rod 14 can be inserted. The reinforcing bars 14 are preferably made of metal, for example two reinforcing bars may be used. They may be permanently connected to the web 11, e.g. with a glue so that they can not slip out in a vertical mounting of the Abschalelements 10.

The shuttering element 10 can simply be reversibly rolled up around its longitudinal axis 15 (for example, around one of the reinforcing rods) or, for example, bent in a U-shaped manner, which will be described below Fig. 2 to 5 simplified application described. The figures show the use of the shuttering element 10 in the manufacture of a ceiling, floor, wall or other plate-like concrete element, such as a bridge element or an inclined support wall.

In the following, it is assumed that the concrete element is poured and hardened step by step in several sections connected via the reinforcement. Two adjacent sections are in Fig. 2 to 5 numbered 18a, 18b. Conceivable is the use the Abschalelements 10 but also in other production techniques.

In a first step, at least in the first section 18a, the reinforcement 19, or at least a part thereof, constructed. In the exemplary embodiment shown, the reinforcement 19 is two reinforcing nets or reinforcing nets, which come to lie on opposite sides of the concrete element to be created. The reinforcement of section 18a is in the next section 18b.

After construction of the reinforcement can in the border region between the sections 18a, 18b one of in Fig. 1 Shuttering elements 10 shown are introduced. Whose width A is such that it unrolled in unrolled or partially unrolled state at least the space between the two reinforcing nets 19 and there is able to form a shuttering. Thus, the Abschalelement 10 can be easily inserted between the reinforcement 19, it is bent or rolled around its longitudinal axis before insertion and introduced in this form parallel to its longitudinal direction in the reinforcement 19. Then it is bent or unrolled and attached to its longitudinal edges on the reinforcement 19, for example with suitable wires or clamps, see Fig. 3 ,

Now 19 sided or both sides formwork boards 20 are placed around the built-up reinforcement. In addition, 20 strips 21 are arranged in the area between the side edges of the Abschalelements 10 and the shuttering boards, prevent in an exit of the concrete to be filled later in this area. This completes the formwork. The shuttering element 10 forms the shuttering in the area between the two reinforcing nets.

Now concrete can be poured into section 18a, as in Fig. 4 is illustrated. The concrete is then cured.

Then, as in Fig. 5 illustrated, the strips 21 removed, and it can be the next section 18 b completed and filled with concrete. As can be seen, while the Abschalelement 10 remains between the two sections.

The process steps according to Fig. 2 to 5 can be varied in different ways. For example, the sequence of construction of the reinforcement 19, the insertion of the Abschalelements 10 and the assembly of the lateral shuttering boards 20 and strips 21 can be adapted to the respective requirements.

Instead of reinforcing meshes, other known reinforcing structures can be used for the reinforcement 19.

In the execution after Fig. 1 the edges of the Abschalelements 10 are reinforced with the reinforcing bars 14, and the edges of the web 11 are folded over this. Depending on the manufacturing process and choice of material, another type of attachment is conceivable, for example by means of gluing or welding, or the reinforcing rods may consist of a thickened part of the strip material. It is also possible to provide additional reinforcing rods, which are fastened between the edge-side reinforcing rods 14 parallel to the longitudinal direction 15 on the band 11 and strengthen it. It is also conceivable that the band 11 extends laterally slightly beyond the reinforcing rods 14.

The reinforcement of the band 11 may also be omitted if the band 11 itself has sufficient strength. However, the reinforcements are advantageous in that they facilitate the insertion of the shuttering element 10 and require fewer attachment points of the shuttering element 10 to the reinforcement without obstructing a bending or curling of the shuttering element 10 about the longitudinal axis 15.

Claims (10)

1. Method for manufacturing a reinforced slab-like concrete element, particularly a ceiling, a floor or a wall, by means of pouring concrete into a formwork (10, 20), wherein the concrete element is gradually poured into multiple sections (18a, 18b) connected via the reinforcement (19) and hardened, wherein an elongate formwork element (10) is used for the edge-sided formwork (10, 20) of a first section (18a), the formwork element being lost after the pouring of the next section (18b), characterized in that the formwork element (10) is inserted into the reinforcement (19) in a rolled-up or bent shape with respect to its longitudinal axis (15), is at least partly bent back or unrolled respectively and is attached.
2. Method according to claim 1, wherein the formwork element (10) is attached to the reinforcement.
3. Method according to claim 1 or 2, wherein at least a reinforcement net is arranged on each of opposite sides inside the concrete element, wherein the formwork element (10) forms a shuttering between the reinforcement nets.
4. Method according to claim 3, wherein the formwork element (10) is attached to the reinforcement nets.
5. Formwork element for manufacturing a reinforced, slab-like concrete element for use for the method according to one of the preceding claims, characterized by a web (11) made of flexible material, which is reinforced along opposite longitudinal edges (12), wherein the web (11) is formed at least partly of fibre-glass-reinforced or carbon-fibre-reinforced plastic or fibre glass, wherein the formwork element can be reversibly bended or rolled-up.
6. Formwork element according to claim 5, wherein the web (11) is formed of a flexible net.
7. Formwork element according to claim 5, wherein the net has a mesh width of 1 to 5 mm, particularly around 2.5 mm.
8. Formwork element according to one of the claims 5 to 7, wherein at least a reinforcing rod (14), particularly of metal, is arranged at each one of the longitudinal edges (12) of the web (11).
9. Formwork element according to claim 8, wherein the web (11) is turned around the reinforcing rods (14) at the longitudinal edges (12) and particularly wherein the longitudinal edges (12) are turned over and seamed.
10. Use of the formwork element according to one of the claims 5 to 9 as lost formwork between gradually manufactured sections of a reinforced, slab-like concrete element.

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