EP0789116A1 - Shuttering element - Google Patents

Shuttering element Download PDF

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Publication number
EP0789116A1
EP0789116A1 EP96120679A EP96120679A EP0789116A1 EP 0789116 A1 EP0789116 A1 EP 0789116A1 EP 96120679 A EP96120679 A EP 96120679A EP 96120679 A EP96120679 A EP 96120679A EP 0789116 A1 EP0789116 A1 EP 0789116A1
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EP
European Patent Office
Prior art keywords
formwork element
rods
holding
element according
formwork
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Granted
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EP96120679A
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German (de)
French (fr)
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EP0789116B1 (en
Inventor
Willibald Fischer
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Individual
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Individual
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/18—Bulkheads or similar walls made solely of concrete in situ
    • E02D5/185—Bulkheads or similar walls made solely of concrete in situ with flexible joint members between sections
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/01—Flat foundations
    • E02D27/02—Flat foundations without substantial excavation
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
    • E04C5/065—Light-weight girders, e.g. with precast parts
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts

Definitions

  • the invention relates to formwork element for lost formwork in concrete construction.
  • Such a formwork element is known from DE-PS 41 11 062.
  • the known formwork element consists of an expanded metal sheet which is welded between the transverse and longitudinal bars of a metal grid.
  • the known formwork element can be used in this form as a lost formwork panel.
  • the formwork element can also be firmly connected to a self-supporting rod frame to form a spatially shaped, prefabricated formwork element, such as a channel formwork of the type of DE-GM 90 05 482 or a backsplash according to DE-GM 92 06 140.
  • the known formwork element can be used very well for the intended use, but requires more work and is therefore relatively expensive.
  • the invention has for its object to provide an inexpensive and easy to manufacture, fully functional formwork element and to show a method for its manufacture.
  • the inventive design of the concrete-holding formwork surfaces of the formwork element by means of a multiplicity of essentially parallel covering bars creates a formwork element which is simple to manufacture and inexpensive. It has been found that the covering rods are in a position to provide a distance to one another that is matched to the concrete quality, to hold the concrete securely within the formwork, but on the other hand to allow a certain amount of swelling out, so that they also parallel with it Cover rods can be created a rough connection surface on which the second concrete section to be subsequently produced can claw well. However, this also embeds the cover bars in the concrete, which contributes to additional reinforcement and thus to increased strength.
  • the preferred distance between the cover bars according to claim 2 is between 6 and 8 mm.
  • the distance can also be reduced to zero or increased to 30 mm.
  • the preferred thickness of the cover rods is 3 to 5 mm. However, if additional, particularly effective reinforcement is to be achieved, its diameter can increase to 12 mm.
  • the covering bars according to claim 4 are made of metal, with reinforcing bars consisting of recycling material being preferred.
  • the configuration according to claim 5 makes the manufacture of the formwork element according to the invention even easier.
  • a plurality of parallel holding rods are expediently provided for holding the cover rods.
  • the spacing of the support rods can be dimensioned based on structural conditions, in particular the diameter of the cover rods and the expected concrete pressure to which the cover rods are exposed. A distance between 10 and 25 cm, preferably 20 cm, will be sufficient for most applications.
  • the support bars can also be used for additional reinforcement and for this purpose according to claim 8 a diameter up to 12 mm, i.e. the diameter of the usual reinforcing bars.
  • the holding rods should preferably consist of metal, as described in claim 9.
  • the formwork element according to the invention can also be designed as a formwork element with a self-supporting scaffold, the cover rods being carried directly by one of the scaffold rods, which further simplifies production.
  • the cover rods form part of the supporting structure, so that the production is further simplified.
  • Claim 13 describes a particularly preferred method for producing the formwork element according to the invention, for which the device already described in DE-PS 41 11 062 can expediently be used.
  • the holding rods of the spot welding stations which have a constant spacing from one another, can be fed and the covering rods placed on the holding rods at the predetermined distance shortly before the spot welding station and immediately welded to the holding rods.
  • the production of the formwork elements according to the invention is particularly simple and cost-effective if the holding rods according to Claim 14 from a continuous supply, for example a roll, fed and only cut into the desired size of the formwork element after connecting to the cover rods.
  • Claim 15 describes a particularly preferred because simple and inexpensive method of producing formwork elements with a self-supporting framework and formwork walls, since a flat material can be produced in a substantially simple manner.
  • Fig. 1 shows a first embodiment of a formwork element 1 according to the invention in the form of a flat formwork strip or a formwork panel shown only partially.
  • the formwork element 1 has a plurality of closely adjacent and parallel to each other covering rods 2 with a round cross-section, which are connected to one another by a holding device in the form of holding rods 3 running at right angles to the covering rods 2 and are held at a predetermined distance a from one another.
  • the holding rods 3 also have a round cross section.
  • the distance a between the cover bars 2 is matched to the concrete quality to be shuttered with the formwork element 1 and can be 0 mm in the case of particularly low-viscosity concrete qualities and 12 mm in the case of particularly tough, viscous concrete qualities. However, for most of the usual concrete qualities, the distance a is between 6 and 8 mm.
  • the cover rods 2 have a diameter d, which was chosen for the cover rods 2 or the concrete part according to the desired strength and bending stiffness and can be up to 12 mm.
  • the diameter d is usually between 3 and 5 mm.
  • the holding rods 3 have a diameter D, which can be up to 12 mm.
  • the holding bars 3 are arranged at a distance A on the same side of the covering bars 2, which suitably corresponds to the distance between the reinforcing bars of a mesh mat and is between 10 and 25 cm, preferably 20 cm.
  • the support rods 3 can, as shown in Fig. 1, protrude slightly beyond the outer cover rods, but can also be aligned with them.
  • Both the cover rods 2 and the holding rods 3 consist of the usual structural steel and are spot-welded to one another at their crossing points. They can have a profiled outer surface, as is also common with reinforcing bars.
  • the flat formwork element 1 can be used like any other surface formwork, i.e. it can be set up in the usual way or attached to a support frame.
  • Fig. 2 shows a further embodiment of a formwork element 10 according to the invention, which is designed as a formwork element for producing a backsplash.
  • the formwork element 10 has the cover rods 2 already described with reference to FIG. 1, the diameter and spacing of which are identical to those of FIG. 1.
  • U-shaped brackets 13 serve as holding devices in the formwork element 10, the legs of which are designed as holding rods and are held in an upright position and at a predetermined distance from one another by the covering rods 2.
  • Cover rods 2 and U-shaped brackets 13 are thus part of a framework 14 which determines the shape of the formwork element 10.
  • the shape of the scaffold can be stabilized by anchor rods and spacers (not shown) that extend across the cross-section.
  • the framework of the formwork element 10 includes a holder 15 into which one of the usual joint tapes, not shown, made of elastic material can be inserted.
  • the bracket 15 consists of V-shaped brackets 16, wherein a V-shaped bracket 16 is arranged with its apex in the middle of the U-shaped bracket 13 between the cover rods 2.
  • the holder 15 additionally has connecting rods 17 which, in particular, connect the free ends of the V-shaped brackets 16 to one another and keep them at a distance from one another, but can also be arranged between the vertices of the V-shaped brackets and their free ends. All rods of the frame 14 for the formwork element 10 have a round cross section and are made of structural steel.
  • the device 20 contains a feed table 21 on which, in the exemplary embodiment shown, there are already rods 3, 13 cut to the desired length, which form the holding device. However, the holding rods can also be removed from a rail and fed continuously.
  • the holding rods 3, 13 are at a predetermined distance D from one another perpendicular to the plane of the drawing in FIG. 3 and are arranged in parallel.
  • the guide table 21 has a feed finger 22 for each of the holding rods 3, 13, which acts on the trailing end of each holding rod 3, 13 in such a way that the holding rods 3, 13 together controlled by feed in the direction of their longitudinal extent and in the direction of arrow A to a spot welding station 23.
  • the most important features of the spot welding station 23 are two electrodes 24 and a preferably magnetic stop 25 for the cover bars 2 arranged above the arriving holding rods 3, 13, which are supplied by a feed device 26 arranged above the spot welding station 23.
  • the feed device 26 has a drum 27 which can be rotated in the direction of the arrow B and in the circumference of which receiving grooves 28 are provided which can each accommodate only a single cover rod 2.
  • the cover rods 2 lie on a ramp 29 and are guided by this to the drum 27.
  • a cover rail 30 ensures that the cover rods 2 remain in their grooves 28 until they are directly above the spot welding station 23. At this point, the cover rail 30 is interrupted by a supply gap 31, through which the cover rods 2 can fall individually onto the holding rods 3, 13 in their predetermined position. After welding, the feed fingers 22 continue to move so that the subsequent cover rod 2 falls onto the holding rods 3, 13 and can be welded there.
  • the feed speed A of the feed fingers 22 and the rotational speed B of the drum 27 are controlled and coordinated with one another in such a way that for the production of the formwork element 1, the covering rods 2 fall onto the holding rods 3 at intervals and with such a time interval that the predetermined spatial distance a is reached .
  • the resulting flat material is removed and, if necessary, further processed by cutting and / or bending.
  • covering rods 2 are welded over the entire length of the holding rods 3 and the resulting flat material is then optionally connected cut into the desired dimensions.
  • a cutting device can be connected to the spot welding station, which cuts the flat material at predetermined locations depending on the control of the feed (number of cycles and time).
  • the formwork element 10 is preferably produced in two steps, the holding bars 13 forming the U-shaped bracket being welded to the cover bars 2 in one step, an appropriate control system ensuring that the cover bars 2 are attached only to the legs of the U- Shaped bracket 13 are provided where they later form a formwork wall, and the web of the U-shaped bracket remains free.
  • the holder 15 is produced in the same device 20, the bars forming the V-shaped bracket 17 being fed analogously to the holding bars 3, and the bars 17 forming the cross connection being fed analogously to the covering bars 2. Then the two parts of the frame are bent as shown in Fig. 2, U- or V-shaped and welded together.
  • the formwork element according to the invention can also be produced in other forms, for example as gutter formwork without a joint tape holder.
  • the joint tape holder can also be produced with the help of U-shaped brackets instead of the V-shaped bracket shown in FIG. 2.
  • the rods do not have to be made of metal. Instead of bars with a round cross section, strip-shaped or strip-shaped bars can also be used. If the electrodes of the spot welding device can be moved perpendicular to the plane of the drawing in FIG. 3, it is also possible with a sophisticated control to produce the formwork element according to FIG. 2 first as a flat material and then to bend it up accordingly.
  • the cover rods can be used instead of holding rods can also be held in their predetermined position by blocks or other holding devices.

Abstract

The sacrificial shuttering element (1) is used in concrete construction, and has covering bars (2) which are roughly parallel to one another. Retaining equipment (3) is used to hold the bars at a distance (a) from one another which retains the concrete, and which is matched to the quality of the latter. The distance between the bars may be up to 30 mm, and preferably may be from 6 to 8 mm. The diameter (d) of the bars may be up to 12 mm, and preferably may be from 3 to 5 mm. The bars may be made from metal, and the retaining equipment may be in the form of at least one bar which is roughly perpendicular to the covering bars.

Description

Die Erfindung bezieht sich auf Schalungselement für verlorene Schalungen im Betonbau.The invention relates to formwork element for lost formwork in concrete construction.

Ein derartiges Schalungselement ist aus der DE-PS 41 11 062 bekannt. Das bekannte Schalungselement besteht aus einer Streckmetalltafel, die zwischen die Quer- und die Längsstäbe eines Metallgitters eingeschweißt ist. Das bekannte Schalungselement kann in dieser Form als verlorene Schalungstafel eingesetzt werden. Das Schalungselement kann jedoch auch fest mit einem selbsttragenden Stabgerüst zu einem räumlich ausgeformten, vorgefertigten Schalungselement, wie beispielsweise einer Rinnenschalung der Art des DE-GM 90 05 482 oder einer Aufkantung nach der DE-GM 92 06 140, verbunden werden. Das bekannte Schalungselement ist zwar für den angestrebten Verwednungszweck sehr gut brauchbar, erfordert jedoch einen höheren Arbeitsaufwand und ist demzufolge relativ teuer.Such a formwork element is known from DE-PS 41 11 062. The known formwork element consists of an expanded metal sheet which is welded between the transverse and longitudinal bars of a metal grid. The known formwork element can be used in this form as a lost formwork panel. However, the formwork element can also be firmly connected to a self-supporting rod frame to form a spatially shaped, prefabricated formwork element, such as a channel formwork of the type of DE-GM 90 05 482 or a backsplash according to DE-GM 92 06 140. The known formwork element can be used very well for the intended use, but requires more work and is therefore relatively expensive.

Der Erfindung liegt die Aufgabe zugrunde, ein preisgünstig und einfach herzustellendes, voll funktionsfähiges Schalungselement zu schaffen und ein Verfahren zu seiner Herstellung aufzuzeigen.The invention has for its object to provide an inexpensive and easy to manufacture, fully functional formwork element and to show a method for its manufacture.

Die Aufgabe wird durch das Schalungselement nach Anspruch 1 gelöst.The object is achieved by the formwork element according to claim 1.

Durch die erfindungsgemäße Ausbildung der betonhaltenden Schalungsflächen des Schalungselementes durch eine Vielzahl von im wesentlichen parallelen Abdeckstäben wird ein einfach herstellbares und kostengünstiges Schalungselement geschaffen. Es hat sich herausgestellt, daß die Abdeckstäbe durchaus in der Lage sind, einen auf die Betonqualität abgestimmten Abstand zueinander vorausgesetzt, den Beton sicher innerhalb der Schalung zu halten, andererseits jedoch ein gewisses Herausquellen zu gestatten, so daß auch mit diesen parallelen Abdeckstäben eine rauhe Anschlußfläche geschaffen werden kann, an der sich der anschließend herzustellende, zweite Betonabschnitt gut verkrallen kann. Dadurch werden jedoch auch die Abdeckstäbe in den Beton eingebettet, was zu einer zusätzlichen Bewehrung und somit zur Festigkeitssteigerung beiträgt.The inventive design of the concrete-holding formwork surfaces of the formwork element by means of a multiplicity of essentially parallel covering bars creates a formwork element which is simple to manufacture and inexpensive. It has been found that the covering rods are in a position to provide a distance to one another that is matched to the concrete quality, to hold the concrete securely within the formwork, but on the other hand to allow a certain amount of swelling out, so that they also parallel with it Cover rods can be created a rough connection surface on which the second concrete section to be subsequently produced can claw well. However, this also embeds the cover bars in the concrete, which contributes to additional reinforcement and thus to increased strength.

Für die meisten Betonqualitäten beträgt der bevorzugte Abstand zwischen den Abdeckstäben gemäß Anspruch 2 zwischen 6 und 8 mm. Für Sonderzwecke bzw. für besonders dünnflüssige oder besonders zähe Betonqualitäten kann der Abstand jedoch auch bis auf Null verringert bzw. bis auf 30 mm erhöht werden.For most concrete qualities, the preferred distance between the cover bars according to claim 2 is between 6 and 8 mm. For special purposes or for particularly thin or particularly tough concrete qualities, the distance can also be reduced to zero or increased to 30 mm.

Gemäß Anspruch 3 liegt die bevorzugte Dicke der Abdeckstäbe bei 3 bis 5 mm. Soll jedoch eine zusätzliche, besonders wirksame Bewehrung erreicht werden, so kann ihr Durchmesser bis auf 12 mm ansteigen.According to claim 3, the preferred thickness of the cover rods is 3 to 5 mm. However, if additional, particularly effective reinforcement is to be achieved, its diameter can increase to 12 mm.

Zweckmäßigerweise bestehen die Abdeckstäbe gemäß Anspruch 4 aus Metall, wobei aus Recyclingmaterial bestehende Bewehrungsstäbe bevorzugt sind.Expediently, the covering bars according to claim 4 are made of metal, with reinforcing bars consisting of recycling material being preferred.

Durch die Ausgestaltung nach Anspruch 5 wird die Herstellung des erfindungsgemäßen Schalungselementes noch weiter erleichtert.The configuration according to claim 5 makes the manufacture of the formwork element according to the invention even easier.

Zweckmäßigerweise sind gemäß Anspruch 6 eine Vielzahl paralleler Haltestäbe zum Halten der Abdeckstäbe vorgesehen. Gemäß Anspruch 7 kann der Abstand der Haltestäbe auf konstruktive Gegebenheiten, insbesondere den Durchmesser der Abdeckstäbe und dem zu erwartenden Betondruck, dem die Abdeckstäbe ausgesetzt sind, bemessen werden. Ein Abstand zwischen 10 und 25 cm, bevorzugt 20 cm, wird für die meisten Anwendungszwecke ausreichend sein.A plurality of parallel holding rods are expediently provided for holding the cover rods. According to claim 7, the spacing of the support rods can be dimensioned based on structural conditions, in particular the diameter of the cover rods and the expected concrete pressure to which the cover rods are exposed. A distance between 10 and 25 cm, preferably 20 cm, will be sufficient for most applications.

Auch die Haltestäbe können für eine zusätzliche Bewehrung eingesetzt werden und zu diesem Zweck gemäß Anspruch 8 einen Durchmesser bis zu 12 mm, d.h. dem Durchmesser der üblichen Bewehrungsstäbe, aufweisen.The support bars can also be used for additional reinforcement and for this purpose according to claim 8 a diameter up to 12 mm, i.e. the diameter of the usual reinforcing bars.

Auch die Haltestäbe sollten bevorzugt aus Metall bestehen, wie dies in Anspruch 9 beschrieben ist.The holding rods should preferably consist of metal, as described in claim 9.

Das erfindungsgemäße Schalungsselement kann auch gemäß Anspruch 10 als Schalungselement mit selbsttragendem Gerüst ausgebildet sein, wobei die Abdeckstäbe direkt von einem der Gerüststäbe getragen werden, was die Herstellung weiter vereinfacht.The formwork element according to the invention can also be designed as a formwork element with a self-supporting scaffold, the cover rods being carried directly by one of the scaffold rods, which further simplifies production.

In der Ausgestaltung gemäß Anspruch 11 bilden die Abdeckstäbe einen Teil des tragenden Gerüstes, so daß die Herstellung noch weiter vereinfacht wird.In the embodiment according to claim 11, the cover rods form part of the supporting structure, so that the production is further simplified.

Schließlich können weitere Teile des Schalungselementes, wie beispielsweise die in Anspruch 12 beschriebene Halterung für ein Fugenband oder eine Wassersperre aus Blech in das Gerüst integriert werden.Finally, other parts of the formwork element, such as the holder for a joint tape or a water barrier made of sheet metal described in claim 12, can be integrated into the scaffold.

Anspruch 13 beschreibt ein besonders bevorzugtes Verfahren zum Herstellen des erfindungsgemäßen Schalungselementes, für das zweckmäßigerweise die bereits in der DE-PS 41 11 062 beschriebene Vorrichtung verwendet werden kann. Durch die beschriebene Zuführrichtung der einzelnen Stäbe können die einen konstanten Abstand zueinander aufweisenden Haltestäbe der Punktschweißstationen zugeführt werden und die Abdeckstäbe in dem vorbestimmten Abstand auf die Haltestäbe kurz vor der Punktschweißstation aufgelegt und sofort mit den Haltestäben verschweißt werden.Claim 13 describes a particularly preferred method for producing the formwork element according to the invention, for which the device already described in DE-PS 41 11 062 can expediently be used. By means of the described feed direction of the individual rods, the holding rods of the spot welding stations, which have a constant spacing from one another, can be fed and the covering rods placed on the holding rods at the predetermined distance shortly before the spot welding station and immediately welded to the holding rods.

Besonders einfach und kostengünstig wird die Herstellung der erfindungsgemäßen Schalungselemente, wenn die Haltestäbe gemäß Anspruch 14 aus einem kontinuierlichen Vorrat, beispielsweise einer Rolle, zugeführt und erst nach dem Verbinden mit den Abdeckstäben in die gewünschte Größe des Schalungselementes geschnitten werden.The production of the formwork elements according to the invention is particularly simple and cost-effective if the holding rods according to Claim 14 from a continuous supply, for example a roll, fed and only cut into the desired size of the formwork element after connecting to the cover rods.

Anspruch 15 beschreibt eine besonders bevorzugte, weil einfache und kostengünstige Methode, Schalungselemente mit einem selbsttragenden Gerüst und Schalungswandungen herzustellen, da ein Flachmaterial wesentlich einfache hergestellt werden kann.Claim 15 describes a particularly preferred because simple and inexpensive method of producing formwork elements with a self-supporting framework and formwork walls, since a flat material can be produced in a substantially simple manner.

Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnungen näher erläutert. Es zeigen:

Fig. 1
eine Draufsicht auf ein erstes Ausführungsbeispiel eines erfindungsgemäßen Schalungselementes,
Fig. 2
eine perspektivische Darstellung eines zweiten Ausführungsbeispiels eines erfindungsgemäßen Schalungselementes, und
Fig. 3
eine schematische Darstellung der zur Durchführung des erfindungsgemäßen Verfahrens verwendete Vorrichtung.
Exemplary embodiments of the invention are explained in more detail below with reference to the drawings. Show it:
Fig. 1
a plan view of a first embodiment of a formwork element according to the invention,
Fig. 2
a perspective view of a second embodiment of a formwork element according to the invention, and
Fig. 3
is a schematic representation of the device used to carry out the method according to the invention.

Fig. 1 zeigt ein erstes Ausführungsbeispiel eines erfindungsgemäßen Schalungselementes 1 in Form eines nur teilweise dargestellten, flächigen Schalungsstreifens bzw. einer Schalungstafel. Das Schalungselement 1 weist eine Vielzahl eng benachbarter und parallel zueinander ausgerichteter Abdeckstäbe 2 mit rundem Querschnitt auf, die durch eine Halteeinrichtung in Form von rechtwinklig zu den Abdeckstäben 2 verlaufenden Haltestäben 3 miteinander verbunden und in einem vorbestimmten Abstand a zueinander gehalten sind. Auch die Haltestäbe 3 haben einen runden Querschnitt.Fig. 1 shows a first embodiment of a formwork element 1 according to the invention in the form of a flat formwork strip or a formwork panel shown only partially. The formwork element 1 has a plurality of closely adjacent and parallel to each other covering rods 2 with a round cross-section, which are connected to one another by a holding device in the form of holding rods 3 running at right angles to the covering rods 2 and are held at a predetermined distance a from one another. The holding rods 3 also have a round cross section.

Der Abstand a zwischen den Abdeckstäben 2 wird auf die mit dem Schalungselement 1 abzuschalende Betonqualität abgestimmt und kann bei besonders dünnflüssigen Betonqualitäten bei 0 mm und bei besonders zähen, dickflüssigen Betonqualitäten bei 12 mm liegen. Für die meisten der üblichen Betonqualitäten liegt der Abstand a jedoch zwischen 6 und 8 mm. Die Abdeckstäbe 2 haben einen Durchmesser d, der nach der gewünschten Festigkeit und Biegesteifigkeit für die Abdeckstäbe 2 bzw. das Betonteil gewählt wurde und bis zu 12 mm betragen kann. Üblicherweise beträgt der Durchmesser d zwischen 3 und 5 mm.The distance a between the cover bars 2 is matched to the concrete quality to be shuttered with the formwork element 1 and can be 0 mm in the case of particularly low-viscosity concrete qualities and 12 mm in the case of particularly tough, viscous concrete qualities. However, for most of the usual concrete qualities, the distance a is between 6 and 8 mm. The cover rods 2 have a diameter d, which was chosen for the cover rods 2 or the concrete part according to the desired strength and bending stiffness and can be up to 12 mm. The diameter d is usually between 3 and 5 mm.

Die Haltestäbe 3 weisen einen Durchmesser D auf, der bis zu 12 mm betragen kann. Die Haltestäbe 3 sind in einem Abstand A auf der gleichen Seite der Abdeckstäbe 2 angeordnet, der zweckmäßigerweise dem Abstand zwischen den Bewehrungsstäben einer Gittermatte entspricht und zwischen 10 und 25 cm, bevorzugt 20 cm beträgt. Die Haltstäbe 3 können, wie in Fig. 1 dargestellt, geringfügig über die äußeren Abdeckstäbe frei vorstehen, können jedoch auch mit ihnen fluchten.The holding rods 3 have a diameter D, which can be up to 12 mm. The holding bars 3 are arranged at a distance A on the same side of the covering bars 2, which suitably corresponds to the distance between the reinforcing bars of a mesh mat and is between 10 and 25 cm, preferably 20 cm. The support rods 3 can, as shown in Fig. 1, protrude slightly beyond the outer cover rods, but can also be aligned with them.

Sowohl die Abdeckstäbe 2 als auch die Haltestäbe 3 bestehen aus dem üblichen Baustahl und sind miteinander an ihren Kreuzungspunkten punktverschweißt. Sie können eine profilierte Außenfläche aufweisen, wie dies auch bei Bewehrungsstäben üblich ist.Both the cover rods 2 and the holding rods 3 consist of the usual structural steel and are spot-welded to one another at their crossing points. They can have a profiled outer surface, as is also common with reinforcing bars.

Das flächige Schalungselement 1 kann wie jede andere Flächenschalung eingesetzt werden, d.h. sie kann in üblicher Weise aufgestellt oder an einem Tragegerüst befestigt werden.The flat formwork element 1 can be used like any other surface formwork, i.e. it can be set up in the usual way or attached to a support frame.

Fig. 2 zeigt ein weiteres Ausführungsbeispiel eines erfindungsgemäßen Schalungselementes 10, das als Formschalungselement zum Herstellen einer Aufkantung ausgebildet ist. Das Schalungselement 10 weist die bereits anhand der Fig. 1 beschriebenen Abdeckstäbe 2 auf, deren Durchmesser und Abstand zueinander mit denen der Fig. 1 identisch sind.Fig. 2 shows a further embodiment of a formwork element 10 according to the invention, which is designed as a formwork element for producing a backsplash. The formwork element 10 has the cover rods 2 already described with reference to FIG. 1, the diameter and spacing of which are identical to those of FIG. 1.

Als Halteeinrichtung dienen beim Schalungselement 10 U-förmige Bügel 13, deren Schenkel als Haltestäbe ausgebildet sind und durch die Abdeckstäbe 2 in aufrechter Stellung und in ihrem vorbestimmten Abstand zueinander gehalten werden. Abdeckstäbe 2 und U-förmige Bügel 13 sind somit Teil eines Gerüstes 14, das die Form des Schalungselementes 10 bestimmt. Die Form des Gerüstes kann durch Ankerstäbe und Distanzhalter (nicht gezeichnet) stabilisiert werden, die sich quer über den Querschnitt erstrecken. Weiterhin zum Gerüst des Schalungselementes 10 gehört eine Halterung 15, in die eines der üblichen, nicht gezeichneten Fugenbänder aus elastischem Material eingelegt werden kann. Die Halterung 15 besteht aus V-förmigen Bügeln 16, wobei jeweils ein V-förmiger Bügel 16 mit seinem Scheitelpunkt in der Mitte des U-förmigen Bügels 13 zwischen den Abdeckstäben 2 angeordnet ist. Die Halterung 15 weist zusätzlich Verbindungsstäbe 17 auf, die insbesondere die freien Enden der V-förmigen Bügel 16 miteinander verbinden und im Abstand zueinander halten, jedoch auch zwischen den Scheitelpunkten der V-förmigen Bügel und ihren freien Enden angeordnet sein können. Alle Stäbe des Gerüstes 14 für das Schalungselement 10 weisen einen runden Querschnitt auf und bestehen aus Baustahl.U-shaped brackets 13 serve as holding devices in the formwork element 10, the legs of which are designed as holding rods and are held in an upright position and at a predetermined distance from one another by the covering rods 2. Cover rods 2 and U-shaped brackets 13 are thus part of a framework 14 which determines the shape of the formwork element 10. The shape of the scaffold can be stabilized by anchor rods and spacers (not shown) that extend across the cross-section. Furthermore, the framework of the formwork element 10 includes a holder 15 into which one of the usual joint tapes, not shown, made of elastic material can be inserted. The bracket 15 consists of V-shaped brackets 16, wherein a V-shaped bracket 16 is arranged with its apex in the middle of the U-shaped bracket 13 between the cover rods 2. The holder 15 additionally has connecting rods 17 which, in particular, connect the free ends of the V-shaped brackets 16 to one another and keep them at a distance from one another, but can also be arranged between the vertices of the V-shaped brackets and their free ends. All rods of the frame 14 for the formwork element 10 have a round cross section and are made of structural steel.

In Fig. 3 ist schematisch eine Vorrichtung 20 zum Herstellen des Schalungselementes 1, 10 ersichtlich. Die Vorrichtung 20 enthält einen Vorschubtisch 21, auf dem im dargestellten Ausführungsbeispiel bereits auf die gewünschte Länge zugeschnittene Stäbe 3, 13 liegen, die die Halteeinrichtung bilden. Die Haltestäbe können jedoch auch von einer Ralle abgezogen und kontinuierlich zugeführt werden. Senkrecht zur Zeichnungsebene in Fig. 3 weisen die Haltestäbe 3, 13 ihren vorbestimmten Abstand D zueinander auf und sind parallel angeordnet. Der Führungstisch 21 weist für jeden der Haltestäbe 3, 13 einen Vorschubfinger 22 auf, der am nachlaufenden Ende jedes Haltestabes 3, 13 derart angreift, daß die Haltestäbe 3, 13 gemeinsam vorschubgesteuert in Richtung ihrer Längserstreckung und in Richtung des Pfeiles A auf eine Punktschweißstation 23 zubewegt werden.3 schematically shows a device 20 for producing the formwork element 1, 10. The device 20 contains a feed table 21 on which, in the exemplary embodiment shown, there are already rods 3, 13 cut to the desired length, which form the holding device. However, the holding rods can also be removed from a rail and fed continuously. The holding rods 3, 13 are at a predetermined distance D from one another perpendicular to the plane of the drawing in FIG. 3 and are arranged in parallel. The guide table 21 has a feed finger 22 for each of the holding rods 3, 13, which acts on the trailing end of each holding rod 3, 13 in such a way that the holding rods 3, 13 together controlled by feed in the direction of their longitudinal extent and in the direction of arrow A to a spot welding station 23.

Die Punktschweißstation 23 hat als wesentlichste Merkmale zwei Elektroden 24 und einen oberhalb der ankommenden Haltestäbe 3, 13 angeordneten, vorzugsweise magnetischen Anschlag 25 für die Abdeckstäbe 2, die von einer oberhalb der Punktschweißstation 23 angeordneten Zuführeinrichtung 26 zugeführt werden. Die Zuführeinrichtung 26 weist eine in Richtung des Pfeiles B drehbare Trommel 27 auf, in deren Umfang Aufnahmerillen 28 vorgesehen sind, die jeweils nur einen einzigen Abdeckstab 2 aufnehmen können. Die Abdeckstäbe 2 liegen auf einer Rampe 29 und werden von dieser zur Trommel 27 geleitet. Eine Abdeckschiene 30 sorgt dafür, daß die Abdeckstäbe 2 solange in ihren Rillen 28 bleiben, bis sie sich direkt über der Punktschweißstation 23 befinden. An dieser Stelle ist die Abdeckschiene 30 durch einen Zufuhrspalt 31 unterbrochen, durch den die Abdeckstäbe 2 jeweils einzeln in ihre vorbestimmte Position auf die Haltestäbe 3, 13 fallen können. Nach dem Festschweißen bewegen sich die Vorschubfinger 22 weiter, so daß der nachfolgende Abdeckstab 2 auf die Haltestäbe 3, 13 fallen und dort festgeschweißt werden kann.The most important features of the spot welding station 23 are two electrodes 24 and a preferably magnetic stop 25 for the cover bars 2 arranged above the arriving holding rods 3, 13, which are supplied by a feed device 26 arranged above the spot welding station 23. The feed device 26 has a drum 27 which can be rotated in the direction of the arrow B and in the circumference of which receiving grooves 28 are provided which can each accommodate only a single cover rod 2. The cover rods 2 lie on a ramp 29 and are guided by this to the drum 27. A cover rail 30 ensures that the cover rods 2 remain in their grooves 28 until they are directly above the spot welding station 23. At this point, the cover rail 30 is interrupted by a supply gap 31, through which the cover rods 2 can fall individually onto the holding rods 3, 13 in their predetermined position. After welding, the feed fingers 22 continue to move so that the subsequent cover rod 2 falls onto the holding rods 3, 13 and can be welded there.

Die Vorschubgeschwindigkeit A der Vorschubfinger 22 und die Drehgeschwindigkeit B der Trommel 27 werden so gesteuert und aufeinander abgestimmt, daß zur Herstellung des Schalungselementes 1 die Abdeckstäbe 2 taktweise und mit einem solchen zeitlichen Abstand auf die Haltestäbe 3 fallen, daß der vorbestimmte räumliche Abstand a erreicht wird. Das sich ergebende Flachmaterial wird entommen und ggfs. durch Schneiden und/oder Biegen weiter verarbeitet.The feed speed A of the feed fingers 22 and the rotational speed B of the drum 27 are controlled and coordinated with one another in such a way that for the production of the formwork element 1, the covering rods 2 fall onto the holding rods 3 at intervals and with such a time interval that the predetermined spatial distance a is reached . The resulting flat material is removed and, if necessary, further processed by cutting and / or bending.

Bei der Herstellung des Schalungselementes 1 werden Abdeckstäbe 2 über die gesamte Länge der Haltestäbe 3 aufgeschweißt und das sich ergebende Flachmaterial gegebenenfalls anschließend in die gewünschten Abmessungen geschnitten. Zu diesem Zweck kann sich an die Punktschweißstation eine Schneideinrichtung anschließen, die in Abhängigkeit von der Steuerung des Vorschubs (Taktzahl und Zeit) das Flachmaterial an vorbestimmten Stellen schneidet.During the manufacture of the formwork element 1, covering rods 2 are welded over the entire length of the holding rods 3 and the resulting flat material is then optionally connected cut into the desired dimensions. For this purpose, a cutting device can be connected to the spot welding station, which cuts the flat material at predetermined locations depending on the control of the feed (number of cycles and time).

Die Herstellung des Schalungselementes 10 erfolgt bevorzugt in zwei Schritten, wobei in einem Schritt die den U-förmigen Bügel bildenden Haltestäbe 13 mit den Abdeckstäben 2 verschweißt werden, wobei durch eine zweckmäßige Steuerung sichergestellt ist, daß die Abdeckstäbe 2 nur an den Schenkeln des U-förmigen Bügels 13 vorgesehen werden, wo sie später eine Schalungswandung bilden, und der Steg des U-förmigen Bügels freibleibt. In einem weiteren Schritt wird in der gleichen Vorrichtung 20 die Halterung 15 hergestellt, wobei die den V-förmigen Bügel 17 bildenden Stäbe analog den Haltestäben 3, und die die Querverbindung bildenden Stäbe 17 analog den Abdeckstäben 2 zugeführt werden. Anschließend werden die beiden Teile des Gerüstes wie in Fig. 2 gezeigt, U- bzw. V-förmig gebogen und zusammengeschweißt.The formwork element 10 is preferably produced in two steps, the holding bars 13 forming the U-shaped bracket being welded to the cover bars 2 in one step, an appropriate control system ensuring that the cover bars 2 are attached only to the legs of the U- Shaped bracket 13 are provided where they later form a formwork wall, and the web of the U-shaped bracket remains free. In a further step, the holder 15 is produced in the same device 20, the bars forming the V-shaped bracket 17 being fed analogously to the holding bars 3, and the bars 17 forming the cross connection being fed analogously to the covering bars 2. Then the two parts of the frame are bent as shown in Fig. 2, U- or V-shaped and welded together.

In Abwandlung des beschriebenen und gezeichnten Ausführungsbeispiels kann das erfindungsgemäße Schalungselement auch in anderen Formen hergestellt werden, z.B. als Rinnenschalung ohne Fugenbandhalterung. Die Fugenbandhalterung kann weiterhin mit Hilfe von U-förmigen Bügeln statt der in Fig. 2 gezeigten V-förmigen Bügel hergestellt werden. Die Stäbe müssen nicht aus Metall bestehen. Auch können statt der Stäbe mit rundem Querschnitt leisten- oder streifenförmige Stäbe verwendet werden. Wenn sich die Elektroden der Punktschweißeinrichtung senkrecht zur Zeichnungsebene in Fig. 3 bewegen lassen, so ist es mit einer ausgefeilten Steuerung auch möglich, das Schalungselement gemäß Fig. 2 in einem einzigen Arbeitsgang zunächst als Flachmaterial herzustellen und dann entsprechend aufzubiegen. Statt mit Haltestäben können die Abdeckstäbe auch durch Klötzchen oder andere Halteeinrichtungen in ihrer vorbestimmten Position gehalten werden.In a modification of the described and drawn exemplary embodiment, the formwork element according to the invention can also be produced in other forms, for example as gutter formwork without a joint tape holder. The joint tape holder can also be produced with the help of U-shaped brackets instead of the V-shaped bracket shown in FIG. 2. The rods do not have to be made of metal. Instead of bars with a round cross section, strip-shaped or strip-shaped bars can also be used. If the electrodes of the spot welding device can be moved perpendicular to the plane of the drawing in FIG. 3, it is also possible with a sophisticated control to produce the formwork element according to FIG. 2 first as a flat material and then to bend it up accordingly. The cover rods can be used instead of holding rods can also be held in their predetermined position by blocks or other holding devices.

Claims (15)

Schalungselement (1, 10) für verlorene Schalungen im Betonbau, mit einer Vielzahl von im wesentlichen parallelen Abdeckstäben (2), die durch eine Halteeinrichtung (3, 13) in einem auf die Betonqualität abgestimmten, betonhaltenden Abstand (a) zueinander gehalten sind.Formwork element (1, 10) for lost formwork in concrete construction, with a multiplicity of substantially parallel covering bars (2), which are held by a holding device (3, 13) at a concrete-holding distance (a) that is matched to the concrete quality. Schalungselement nach Anspruch 1, dadurch gekennzeichnet, daß der Abstand (a) zwischen den Abdeckstäben (2) bis zu 30 mm, bevorzugt 6 bis 8 mm beträgt.Formwork element according to claim 1, characterized in that the distance (a) between the cover bars (2) is up to 30 mm, preferably 6 to 8 mm. Schalungselement nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Abdeckstäbe (2) einen Durchmesser (d) von bis zu 12 mm, bevorzugt 3 bis 5 mm aufweisen.Formwork element according to claim 1 or 2, characterized in that the cover rods (2) have a diameter (d) of up to 12 mm, preferably 3 to 5 mm. Schalungselement nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Abdeckstäbe (2) aus Metall bestehen.Formwork element according to one of claims 1 to 3, characterized in that the cover rods (2) consist of metal. Schalungselement nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Halteeinrichtung wenigstens einen sich im wesentlichen quer zu den Abdeckstäben (2) erstreckenden Haltestab (3, 13) aufweist.Formwork element according to one of Claims 1 to 4, characterized in that the holding device has at least one holding rod (3, 13) which extends essentially transversely to the cover rods (2). Schalungselement nach Anspruch 5, dadurch gekennzeichnet, daß eine Vielzahl paralleler und im Abstand (A) zueinander angeordneter Haltestäbe (3, 13) vorgesehen ist.Formwork element according to claim 5, characterized in that a plurality of parallel holding rods (3, 13) and spaced apart (A) are provided. Schalungselement nach Anspruch 6, dadurch gekennzeichnet, daß der Abstand (A) zwischen den Haltestäben (3, 13) etwa 10 bis 25 cm, bevorzugt 20 cm, beträgt.Formwork element according to claim 6, characterized in that the distance (A) between the holding rods (3, 13) is approximately 10 to 25 cm, preferably 20 cm. Schalungselement nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, daß der Haltestab (3, 13) einen Durchmesser (D) von bis zu 12 mm aufweist.Formwork element according to one of claims 5 to 7, characterized in that the holding rod (3, 13) has a diameter (D) of up to 12 mm. Schalungselement nach einem der Ansprüche 5 bis 8, dadurch gekennzeichnet, daß der Haltestab (3, 13) aus Metall besteht.Formwork element according to one of claims 5 to 8, characterized in that the holding rod (3, 13) consists of metal. Schalungselement nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die Halteeinrichtung durch wenigstens einen als Haltestab (13) ausgebildeten Gerüststab eines ein selbsttragendes Gerüst (14) aufweisenden Schalungselementes (10) gebildet ist, und die Abdeckstäbe (2) eine nur bereichweise am Schalungselement (10) vorgesehene Schalungswandung bilden.Formwork element according to one of Claims 1 to 9, characterized in that the holding device is formed by at least one scaffold rod designed as a holding rod (13) of a formwork element (10) having a self-supporting scaffold (14), and the cover rods (2) form only in some areas Formwork element (10) form provided formwork wall. Schalungselement nach Anspruch 10, dadurch gekennzeichnet, daß das Gerüst (14) eine Mehrzahl U-förmig gebogener Haltestäbe (13) aufweist, die durch die an ihren Schenkeln befestigten Abdeckstäbe (2) im Abstand zueinander gehalten sind.Formwork element according to Claim 10, characterized in that the frame (14) has a plurality of U-shaped holding rods (13) which are held at a distance from one another by the covering rods (2) attached to their legs. Schalungselement nach Anspruch 10 oder 11, dadurch gekennzeichnet, daß das Gerüst (14) im wesentlichen V-förmige Bügel (16) aufweist, die zum Ausbilden einer Halterung (15) für ein Fugenband an den U-förmig gebogenen Haltestäben (13) befestigt sind.Formwork element according to claim 10 or 11, characterized in that the frame (14) has essentially V-shaped brackets (16) which are fastened to the U-shaped bent support rods (13) in order to form a holder (15) for a joint tape . Verfahren zum Herstellen eines Schalungselementes nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß aus Metall ausgebildete Haltestäbe (3, 13) der Halteeinrichtung parallel und im Abstand zueinander in Richtung (A) ihrer Längserstreckung einer Punktschweißstation (23) zugeführt werden, und daß die aus Metall bestehenden Abdeckstäbe quer zu ihrer Längserstreckung der Punktschweißstation (23) zugeführt und im Abstand (a) mit den Haltestäben (3, 13) verschweißt werden.Method for producing a formwork element according to one of Claims 1 to 12, characterized in that holding rods (3, 13) made of metal are fed to the holding device in parallel and at a distance from one another in the direction (A) of their longitudinal extent to a spot welding station (23), and in that the cover rods made of metal are fed transversely to their longitudinal extent to the spot welding station (23) and are welded to the holding rods (3, 13) at a distance (a). Verfahren nach Anspruch 13, dadurch gekennzeichnet, daß die in Richtung ihrer Längserstreckung zugeführten Haltestäbe (3, 13) erst nach dem Verschweißen zugeschnitten werden.Method according to claim 13, characterized in that the holding rods (3, 13) fed in the direction of their longitudinal extent are cut to size only after the welding. Verfahren nach Anspruch 13 oder 14, dadurch gekennzeichnet, daß zum Herstellen eines ein selbsttragendes Gerüst (14) aufweisenden Schalungselementes (10) zumindest einige das Schalungselement (10) bildende Stäbe (2, 13) zunächst zu einem Flachmaterial verschweißt, gegebenenfalls geschnitten und anschließend in die Form des Gerüstes (14) gebogen werden.Method according to claim 13 or 14, characterized in that for producing a formwork element (10) having a self-supporting framework (14), at least some bars (2, 13) forming the formwork element (10) are first welded to a flat material, optionally cut and then in the shape of the frame (14) can be bent.
EP96120679A 1996-02-09 1996-12-20 Shuttering element Expired - Lifetime EP0789116B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19604766A DE19604766C1 (en) 1996-02-09 1996-02-09 Formwork element
DE19604766 1996-02-09

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EP0789116A1 true EP0789116A1 (en) 1997-08-13
EP0789116B1 EP0789116B1 (en) 2007-12-12

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EP (1) EP0789116B1 (en)
AT (1) ATE380911T1 (en)
DE (2) DE19604766C1 (en)
DK (1) DK0789116T3 (en)
ES (1) ES2299176T3 (en)
PT (1) PT789116E (en)

Cited By (2)

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EP1627978A2 (en) 2004-08-19 2006-02-22 FWR Solutions GmbH Formwork element
EP1978159A1 (en) * 2007-04-04 2008-10-08 Bauer Spezialtiefbau GmbH Shuttering device for waterproofing joints in between moduls of foundation slots

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FR567031A (en) * 1923-06-05 1924-02-23 Construction process for walls and partitions
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AU481679B2 (en) * 1974-04-10 1975-10-16 Avi Alpenlandische Veredelungs-Industrie Gesellschaft M. B. H A reinforcing element for concrete
DE9005482U1 (en) 1990-05-14 1991-09-12 Fischer, Willibald, 8312 Dingolfing, De
DE4111062C1 (en) 1991-04-05 1992-05-14 Peca-Verbundtechnik Gmbh, 8312 Dingolfing, De
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Cited By (3)

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Publication number Priority date Publication date Assignee Title
EP1627978A2 (en) 2004-08-19 2006-02-22 FWR Solutions GmbH Formwork element
EP1627978A3 (en) * 2004-08-19 2006-05-03 FWR Solutions GmbH Formwork element
EP1978159A1 (en) * 2007-04-04 2008-10-08 Bauer Spezialtiefbau GmbH Shuttering device for waterproofing joints in between moduls of foundation slots

Also Published As

Publication number Publication date
DE19604766C1 (en) 1997-09-04
ES2299176T3 (en) 2008-05-16
PT789116E (en) 2008-01-17
ATE380911T1 (en) 2007-12-15
DE59611453D1 (en) 2008-01-24
DK0789116T3 (en) 2008-03-31
EP0789116B1 (en) 2007-12-12

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