EP2022908B1 - Bulkhead formwork - Google Patents

Bulkhead formwork Download PDF

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Publication number
EP2022908B1
EP2022908B1 EP08012243A EP08012243A EP2022908B1 EP 2022908 B1 EP2022908 B1 EP 2022908B1 EP 08012243 A EP08012243 A EP 08012243A EP 08012243 A EP08012243 A EP 08012243A EP 2022908 B1 EP2022908 B1 EP 2022908B1
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EP
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Prior art keywords
formwork
formwork panel
free edge
face
bracing
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EP08012243A
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German (de)
French (fr)
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EP2022908A1 (en
Inventor
Willibald Fischer
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FWR Solutions GmbH
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FWR Solutions GmbH
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    • 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
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/365—Stop-end shutterings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B2005/322—Floor structures wholly cast in situ with or without form units or reinforcements with permanent forms for the floor edges

Definitions

  • the invention relates to a Stimabschalung explained in the preamble of claim 1 Art.
  • Such Stimabschalung is from the EP 735 213 known.
  • the known Stirnabschalung consists of a tabular formwork material, in particular an expanded metal, which is stiffened on both sides by transversely or longitudinally extending rods.
  • the known Stirnabschalung is designed for shelling of construction joints and is used where a between the first to be poured concreting on one side of the formwork and the anschnetend concreted concreting on the other side of the formwork must undergo a reinforcement.
  • the formwork material of the known Stirnabschalung is transverse to the concrete slab narrower than it corresponds to the thickness of the concrete slab, whereby the upper free edge can serve as a support for placing the continuous reinforcement, in particular in the form of continuous reinforcing bars.
  • a formwork aid which determines the predetermined distance between the continuous reinforcing bars and which maintains this distance even during concreting.
  • the formwork aid includes a continuous strip, of the comb-like with interstices a variety of formwork pieces of material protrude.
  • the tabular formwork material is first set up and fastened in a suitable manner. Subsequently, the continuous reinforcement is placed on the upper free edge of the formwork material and held by the comb-like formwork aid in the predetermined distances from each other.
  • a formwork element which consists of a concrete cover strip and an associated, strip-shaped positioning aid for the lower reinforcement of a Stimabschalung.
  • the positioning aid contains recesses into which a continuous, lower reinforcement can be inserted, so that their distances from each other are fixed.
  • the actual formwork panel contains lower recesses and comes with put this over the lower reinforcement.
  • the upper edge of the formwork panel is straight, so that no continuous reinforcement can be attached and positioned here.
  • the EP 1 632 621 relates to a Abschalelement for separating a concreting section in concreting sections and has a strip-like form of part Abschaltafeln assembled form, which is adapted in its width to the thickness of the concreting section.
  • the Abschalelement is provided at its vertically extending side edges over the thickness of the concreting section with recesses through which the reinforcement can extend.
  • the arrangement of the recesses on the lateral edge has the disadvantage that the reinforcements must already be loaded with the structure of the Stirnabschalung and then first must be held provisionally until the partial Abschaltafeln, between which the recesses are provided, are secured together. Corrections are only possible under effort.
  • the spacing of the reinforcements is determined transversely to the thickness of the concreting section and likewise can not be varied. If a reinforcement between the lateral edges of the individual Abschaltafeln be necessary, so must, for example, as shown in Figures 4 and 5, through holes are provided in the corresponding formwork panel through which the individual reinforcing rods must be threaded cumbersome.
  • the use of reinforcing mats both for inclusion in the lateral recesses and in the central through holes of the individual formwork panels is not possible because in both cases, the reinforcing mat can only be taken up to the first cross bar.
  • the invention has for its object to provide a Stimabschalung, which is easy to use and still allows safe positioning of an upper reinforcement of a plate.
  • the inventive design an easy-to-use Stimabschalung is created, which provides both a support for a continuous upper reinforcement without major expenses, as well as the maintenance of the predetermined distances along the formwork panel ensures.
  • FIG. 1 shows a Stirnabschalung invention 1 in perspective, schematic representation.
  • the Stirnabschalung 1 contains a formwork material 2 in the form of a panel.
  • any suitable formwork material may be used, but preferably a thin, sheet-like material, a selectively concrete-permeable material or a metal sheet is used.
  • As a preferred material for the formwork panel 2 expanded metal is used.
  • the Stirnabschalung 1 is designed as a permanent formwork, ie it remains after concreting in the finished concrete.
  • the tabular formwork material 2 is provided in the required area size sufficient to cover at least in the thickness direction of the plate, the entire plate thickness, less any concrete cover strips required. On formwork material 2 is thus defines an upper, free edge 3, which points in the vertical installation of the tabular formwork material 2 in a surrounding plate formwork upwards.
  • the upper free edge 3 is at least one support 4 for at least one continuous reinforcement 5 (FIG. FIG. 3 ).
  • the support 4 includes a positioning recess 6, which ends down in a Auflager ground 7.
  • the positioning recess 6 extends as shown in more detail in FIG FIG. 2 can be seen, of the in the finished formwork substantially horizontally extending free edge 3 substantially vertically downwards into the tabular formwork material 2 inside.
  • the positioning recess 6 includes a slot with two opposite side boundaries 6a and 6b, which are substantially rectilinear and parallel to each other.
  • the support base 7 extends substantially perpendicular to the side boundaries 6a, 6b and extends in the illustrated embodiment straight and substantially parallel to the free edge 3.
  • the transition between the support base 7 and the side boundaries 6a, 6b is preferably rounded.
  • the shape of the Auflagercampuses to the outer shape of the male reinforcement 5, for example, the support base semi-circular or partially circular shape, with a radius that corresponds substantially to the radius of the male reinforcing bars.
  • the depth of the positioning recess 6, ie the distance between the support base 7 and the free edge 3 is matched to the strength of the reinforcement 5, so that they can be safely received in the positioning recess 6.
  • the depth of the positioning recess 6 also determines the concrete cover (possibly together with concrete cover strips) over the reinforcement.
  • the positioning recess 6 can be easily cut into the formwork material 2, punched out or formed in any other way.
  • the inventive Stimabschalung 1 preferably includes a plurality of spaced apart positioning recesses 6, which are adapted to the number of required continuous reinforcements and their required distance from each other. However, it is also possible to leave positioning pits empty, i. H. to use no reinforcement there, if this is not necessary, so that not too many variants of a Stirnabschalung must be kept in stock.
  • the area 2a of the formwork material 2 between the free edge and the support base 7 at least in the region of the positioning recess (s) 6 free of any stiffeners, ie the area 2a consists only of the formwork material 2. If this is cut or punched is, it is possible Stirnabschalept without delivering the positioning recesses 6 to the construction site and to install the positioning recesses 6 only at the construction site to the predetermined and for the concrete to be cast concrete in the necessary places.
  • the inventive Stimabschalung 1 very well stiffeners 8, in particular, as seen in the illustrated embodiment, in the form of at least one lattice girder.
  • the lattice girders shown contain three rods which are held together in a triangular manner by cross bracing.
  • one of the stiffeners (lattice girder 8a) is attached immediately after the region 2a on the tabular formwork material 2, so that it stiffens the support base 7 against the forces applied by the reinforcement 5 (and the concrete pressure acting thereon).
  • the stiffener 8a, d. H. the lattice girder runs parallel to the free edge 3 or parallel to the support base 7 of the positioning recesses 6.
  • the surface of the tabular formwork material 2 is stiffened by further stiffening, in particular in the form of lattice girders 8, wherein in the illustrated embodiment at least two further stiffeners 8b and 8c are provided parallel to the lattice girder 8a and thus to the free edge 3 and transversely to these at least one fourth stiffener (lattice girder 8d) extends substantially perpendicularly.
  • the lattice girder 8d ends at the first lattice girder 8a, d. H.
  • any other type of stiffening for example in the form of individual bars or bars or the like can be used.
  • FIG. 3 shows the use of the Stimabschalung 1 according to the invention when creating a working joint in the manufacture of a concrete slab.
  • a slab formwork is constructed in the usual way, in which the Stimabschalung invention 1 is installed.
  • the invention Stirnabschalung 1 is simply placed on a pad 9 and possibly attached to the side Schalungswandungen (not shown). Due to the stiffening lattice girders 8 Stirnabschalung invention 1 is substantially automatically stable.
  • FIG. 3 shows the area 2a projects beyond the stiffeners, ie the lattice girders 8, so that a continuous reinforcement, shown is a reinforcing bar 5, can be inserted into the positioning recess 6. Then, the first concreting section 10 is potted.
  • a self-supporting, tabular formwork material can be used, in which the positioning recesses are introduced in advance. It is also possible to use a poorly or non-cuttable sheet of formwork material and to make the area around the expanded metal or other cuttable material supports.

Abstract

The bulkhead has a panel-shaped formwork material (2) whose upper free edge (3) is in the form of a support (4) for a reinforcement arrangement. The support has at least one associated positioning recess (6) open to the free edge for the reinforcement arrangement.

Description

Die Erfindung bezieht sich auf eine Stimabschalung der im Oberbegriff von Anspruch 1 erläuterten Art.The invention relates to a Stimabschalung explained in the preamble of claim 1 Art.

Eine derartige Stimabschalung ist aus der EP 735 213 bekannt. Die bekannte Stirnabschalung besteht aus einem tafelförmigen Schalungsmaterial, insbesondere einem Streckmetall, das beidseitig durch quer- bzw. längsverlaufende Stäbe versteift ist. Die bekannte Stirnabschalung ist zum Abschalen von Arbeitsfugen ausgebildet und wird dort eingesetzt, wo eine zwischen dem zuerst zu vergießenden Betonierabschnitt an einer Seite der Schalung und dem anschießend zu betonierenden Betonierabschnitt auf der anderen Seite der Schalung eine Bewehrung durchlaufen muss. Das Schalungsmaterial der bekannten Stirnabschalung ist quer zur Betonplatte schmaler als es der Dicke der Betonplatte entspricht, wodurch die obere freie Kante als Auflager zum Auflegen der durchgehenden Bewehrung, insbesondere in Form durchgehender Bewehrungsstäbe, dienen kann. Um jedoch sicher zu stellen, dass die Bewehrungsstäbe insbesondere beim Betonieren des ersten Betonierabschnittes an ihrem vorbestimmten Platz verbleiben, wird eine Schalungshilfe eingesetzt, die den vorbestimmten Abstand zwischen den durchlaufenden Bewehrungsstäben festlegt und die diesen Abstand auch beim Betonieren beibehält. Die Schalungshilfe enthält eine durchgehende Leiste, von der kammartig mit Zwischenräumen eine Vielzahl von Schalungsmaterialstücken wegstehen. Zum Erstellen der Schalung wird zunächst das tafelförmige Schalungsmaterial aufgestellt und auf geeignete Weise befestigt. Anschließend wird die durchlaufende Bewehrung auf der oberen freien Kante des Schalungsmaterials aufgelegt und durch die kammartige Schalungshilfe in den vorbestimmten Abständen zueinander gehalten. Anschließend kann noch, wie üblich, eine Betondeckungsleiste aufgelegt werden und der erste Betonierabschnitt ist fertig zum Betonieren. Die bekannte Stimabschalung ist zwar zufriedenstellend in der Funktion, jedoch aufwendig in der Handhabung, wobei sich insbesondere das nachträgliche Aufstecken der Schalungshilfe als schwierigerwiesen hat, da die Bewehrung nur selten mit den zum Aufstecken erforderlichen, exakt bemessenen Abständen liegt.Such Stimabschalung is from the EP 735 213 known. The known Stirnabschalung consists of a tabular formwork material, in particular an expanded metal, which is stiffened on both sides by transversely or longitudinally extending rods. The known Stirnabschalung is designed for shelling of construction joints and is used where a between the first to be poured concreting on one side of the formwork and the anschießend concreted concreting on the other side of the formwork must undergo a reinforcement. The formwork material of the known Stirnabschalung is transverse to the concrete slab narrower than it corresponds to the thickness of the concrete slab, whereby the upper free edge can serve as a support for placing the continuous reinforcement, in particular in the form of continuous reinforcing bars. However, in order to ensure that the reinforcing bars remain in their predetermined place, in particular when concreting the first concreting section, a formwork aid is used which determines the predetermined distance between the continuous reinforcing bars and which maintains this distance even during concreting. The formwork aid includes a continuous strip, of the comb-like with interstices a variety of formwork pieces of material protrude. To create the formwork, the tabular formwork material is first set up and fastened in a suitable manner. Subsequently, the continuous reinforcement is placed on the upper free edge of the formwork material and held by the comb-like formwork aid in the predetermined distances from each other. Subsequently, as usual, a Betondeckungsleiste be placed and the first concreting is ready for concreting. Although the known Stimabschalung is satisfactory in the function, but consuming in handling, in particular, the subsequent attachment of the formwork aid has proven to be difficult, since the reinforcement is rarely required with the required for plugging, exactly measured distances.

Aus der DE 93 01 565 U ist ein Schalungselement bekannt, das aus einer Betondeckungsleiste und einer damit verbundenen, streifenförmigen Positionierhilfe für die untere Bewehrung einer Stimabschalung besteht. Die Positionierhilfe enthält Ausnehmungen, in die eine durchgehende, untere Bewehrung eingelegt werden kann, so dass deren Abstände zueinander festliegen. Die eigentliche Schalungstafel enthält untere Aussparungen und wird mit diesen über die untere Bewehrung gesetzt. Die Oberkante der Schalungsmaterialtafel verläuft gerade, so dass hier keine durchlaufende Bewehrung befestigt und positioniert werden kann.From the DE 93 01 565 U is a formwork element known, which consists of a concrete cover strip and an associated, strip-shaped positioning aid for the lower reinforcement of a Stimabschalung. The positioning aid contains recesses into which a continuous, lower reinforcement can be inserted, so that their distances from each other are fixed. The actual formwork panel contains lower recesses and comes with put this over the lower reinforcement. The upper edge of the formwork panel is straight, so that no continuous reinforcement can be attached and positioned here.

Die EP 1 632 621 betrifft ein Abschalelement zum Trennen eines Betonierabschnittes in Betonier-Teilabschnitte und weist eine streifenförmige aus Teil-Abschaltafeln zusammengesetzte Form auf, die in seiner Breite der Dicke des Betonierabschnittes angepasst ist. Zum Aufnehmen der Bewehrung ist das Abschalelement an seinen senkrecht verlaufenden Seitenkanten über die Dicke des Betonierabschnittes mit Ausnehmungen versehen, durch die sich die Bewehrung erstrecken kann. Die Anordnung der Ausnehmungen am seitlichen Rand hat jedoch den Nachteil, dass die Bewehrungen bereits mit dem Aufbau der Stirnabschalung eingelegt werden müssen und dann zunächst provisorisch gehalten werden müssen, bis die Teil-Abschaltafeln, zwischen denen die Ausnehmungen vorgesehen sind, aneinander befestigt sind. Korrekturen sind nur unter Aufwand möglich. Weiterhin ist bei einer seitlichen Anordnung von Ausnehmungen der Abstand der Bewehrungen quer zur Dicke des Betonierabschnittes festgelegt und kann ebenfalls nicht variiert werden. Sollte eine Bewehrung auch zwischen den seitlichen Rändern der einzelnen Abschaltafeln notwendig sein, so müssen, wie beispielsweise die Figuren 4 und 5 zeigen, Durchgangslöcher in der entsprechenden Schalungstafel vorgesehen werden, durch die die einzelnen Bewehrungsstäbe umständlich eingefädelt werden müssen. Der Einsatz von Bewehrungsmatten sowohl zur Aufnahme in den seitlichen Ausnehmungen als auch in den mittigen Durchgangslöchern der einzelnen Schalungstafeln ist nicht möglich, da in beiden Fällen die Bewehrungsmatte nur bis zum ersten Querstab aufgenommen werden kann.The EP 1 632 621 relates to a Abschalelement for separating a concreting section in concreting sections and has a strip-like form of part Abschaltafeln assembled form, which is adapted in its width to the thickness of the concreting section. For receiving the reinforcement the Abschalelement is provided at its vertically extending side edges over the thickness of the concreting section with recesses through which the reinforcement can extend. However, the arrangement of the recesses on the lateral edge has the disadvantage that the reinforcements must already be loaded with the structure of the Stirnabschalung and then first must be held provisionally until the partial Abschaltafeln, between which the recesses are provided, are secured together. Corrections are only possible under effort. Furthermore, with a lateral arrangement of recesses, the spacing of the reinforcements is determined transversely to the thickness of the concreting section and likewise can not be varied. If a reinforcement between the lateral edges of the individual Abschaltafeln be necessary, so must, for example, as shown in Figures 4 and 5, through holes are provided in the corresponding formwork panel through which the individual reinforcing rods must be threaded cumbersome. The use of reinforcing mats both for inclusion in the lateral recesses and in the central through holes of the individual formwork panels is not possible because in both cases, the reinforcing mat can only be taken up to the first cross bar.

Der Erfindung liegt die Aufgabe zugrunde, eine Stimabschalung zu schaffen, die einfach in der Handhabung ist und trotzdem eine sichere Positionierung einer oberen Bewehrung einer Platte gestattet.The invention has for its object to provide a Stimabschalung, which is easy to use and still allows safe positioning of an upper reinforcement of a plate.

Die Aufgabe wird durch die im Anspruch 1 angegebenen Merkmale gelöst.The object is solved by the features specified in claim 1.

Durch die erfindungsgemäße Ausgestaltung wird eine einfach zu handhabende Stimabschalung geschaffen, die ohne größere Aufwendungen sowohl ein Auflager für eine durchgehende obere Bewehrung bietet, als auch das Beibehalten der vorbestimmten Abstände entlang der Schalungstafel sicherstellt.The inventive design an easy-to-use Stimabschalung is created, which provides both a support for a continuous upper reinforcement without major expenses, as well as the maintenance of the predetermined distances along the formwork panel ensures.

Vorteilhafte Weiterbildungen der Erfindung sind den Unteransprüchen zu entnehmen.Advantageous developments of the invention can be found in the dependent claims.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnungen näher erläutert. Es zeigen:

Fig. 1
eine perspektivische Darstellung einer erfindungsgemäßen Stirnabschatung,
Fig. 2
eine vergrößerte Ansicht einer Positioniervertiefung, und
Fig. 3
die Stirnabschalung gemäß Figur 1, eingebaut in eine Schalung für eine Platte.
An embodiment of the invention will be explained in more detail with reference to the drawings. Show it:
Fig. 1
a perspective view of Stirnabschatung invention,
Fig. 2
an enlarged view of a positioning recess, and
Fig. 3
the front formwork according to FIG. 1 , built into a formwork for a slab.

Figur 1 zeigt eine erfindungsgemäße Stirnabschalung 1 in perspektivischer, schematische Darstellung. Die Stirnabschalung 1 enthält ein Schalungsmaterial 2 in Form einer Tafel. Als Schalungsmaterial 2 kann jedes geeignete Schalungsmaterial eingesetzt werden, bevorzugt wird jedoch ein dünnes, blechförmiges Material, ein selektiv betondurchlässiges Material oder ein Metallblech eingesetzt. Als bevorzugtes Material für die Schalungstafel 2 wird Streckmetall verwendet. Die Stirnabschalung 1 ist als verlorene Schalung ausgebildet, d. h. sie verbleibt nach dem Betonieren im fertigen Beton. FIG. 1 shows a Stirnabschalung invention 1 in perspective, schematic representation. The Stirnabschalung 1 contains a formwork material 2 in the form of a panel. As the formwork material 2, any suitable formwork material may be used, but preferably a thin, sheet-like material, a selectively concrete-permeable material or a metal sheet is used. As a preferred material for the formwork panel 2 expanded metal is used. The Stirnabschalung 1 is designed as a permanent formwork, ie it remains after concreting in the finished concrete.

Das tafelförmige Schalungsmaterial 2 wird in der benötigten Flächengröße bereitgestellt, die ausreicht, zumindest in Dickenrichtung der Platte die gesamte Plattendicke, abzüglich ggf. erforderlicher Betondeckungsleisten, zu überdecken. Am Schalungsmaterial 2 wird somit eine obere, freie Kante 3 definiert, die beim senkrechten Einbau des tafelförmigen Schalungsmaterials 2 in eine umgebende Plattenschalung nach oben weist.The tabular formwork material 2 is provided in the required area size sufficient to cover at least in the thickness direction of the plate, the entire plate thickness, less any concrete cover strips required. On formwork material 2 is thus defines an upper, free edge 3, which points in the vertical installation of the tabular formwork material 2 in a surrounding plate formwork upwards.

Der oberen freien Kante 3 ist wenigstens ein Auflager 4 für wenigstens eine durchgehende Bewehrung 5 (Figur 3) zugeordnet. Das Auflager 4 enthält eine Positioniervertiefung 6, die nach unten in einem Auflagergrund 7 endet. Die Positioniervertiefung 6 erstreckt sich, wie näher in Figur 2 ersichtlich, von der in der fertigen Schalung im Wesentlichen horizontal verlaufenden freien Kante 3 im Wesentlichen senkrecht nach unten in das tafelförmige Schalungsmaterial 2 hinein. Im dargestellten Ausführungsbeispiel enthält die Positioniervertiefung 6 einen Schlitz mit zwei gegenüberliegenden Seitenbegrenzungen 6a und 6b, die im Wesentlichen geradlinig und parallel zueinander verlaufen. Der Auflagergrund 7 erstreckt sich im Wesentlichen rechtwinkelig zu den Seitenbegrenzungen 6a, 6b und verläuft im dargestellten Ausführungsbeispiel gerade und im Wesentlichen parallel zur freien Kante 3. Der Übergang zwischen dem Auflagergrund 7 und den Seitenbegrenzungen 6a, 6b ist bevorzugt ausgerundet. Es ist jedoch auch möglich, die Form des Auflagergrundes an die äußere Form der aufzunehmenden Bewehrung 5 anzupassen, beispielsweise den Auflagergrund halb- bzw. teilkreisförmig auszurunden, mit einem Radius, der im Wesentlichen dem Radius der aufzunehmenden Bewehrungsstäbe entspricht. Die Tiefe der Positioniervertiefung 6, d. h. der Abstand zwischen dem Auflagergrund 7 und der freien Kante 3 ist auf die Stärke der Bewehrung 5 abgestimmt, so dass diese in der Positioniervertiefung 6 sicher aufgenommen werden können. Darüber hinaus legt die Tiefe der Positioniervertiefung 6 auch die Betonüberdeckung (ggf. zusammen mit Betondeckungsleisten) über die Bewehrung fest. Die Positioniervertiefung 6 kann auf einfache Weise in das Schalungsmaterial 2 eingeschnitten, ausgestanzt oder auf sonstige Weise eingeformt werden.The upper free edge 3 is at least one support 4 for at least one continuous reinforcement 5 (FIG. FIG. 3 ). The support 4 includes a positioning recess 6, which ends down in a Auflagergrund 7. The positioning recess 6 extends as shown in more detail in FIG FIG. 2 can be seen, of the in the finished formwork substantially horizontally extending free edge 3 substantially vertically downwards into the tabular formwork material 2 inside. In the illustrated embodiment, the positioning recess 6 includes a slot with two opposite side boundaries 6a and 6b, which are substantially rectilinear and parallel to each other. The support base 7 extends substantially perpendicular to the side boundaries 6a, 6b and extends in the illustrated embodiment straight and substantially parallel to the free edge 3. The transition between the support base 7 and the side boundaries 6a, 6b is preferably rounded. However, it is also possible to adapt the shape of the Auflagergrundes to the outer shape of the male reinforcement 5, for example, the support base semi-circular or partially circular shape, with a radius that corresponds substantially to the radius of the male reinforcing bars. The depth of the positioning recess 6, ie the distance between the support base 7 and the free edge 3 is matched to the strength of the reinforcement 5, so that they can be safely received in the positioning recess 6. In addition, the depth of the positioning recess 6 also determines the concrete cover (possibly together with concrete cover strips) over the reinforcement. The positioning recess 6 can be easily cut into the formwork material 2, punched out or formed in any other way.

Die erfindungsgemäße Stimabschalung 1 enthält bevorzugt eine Vielzahl zueinander beabstandeter Positioniervertiefungen 6, die an die Anzahl der erforderlichen durchgehenden Bewehrungen und deren erforderlichen Abstand zueinander angepasst sind. Es ist jedoch auch möglich, Positioniervertiefungen leer zu lassen, d. h. dort keine Bewehrung einzusetzen, falls dies nicht erforderlich ist, so dass nicht zu viele Varianten einer Stirnabschalung auf Vorrat gehalten werden müssen.The inventive Stimabschalung 1 preferably includes a plurality of spaced apart positioning recesses 6, which are adapted to the number of required continuous reinforcements and their required distance from each other. However, it is also possible to leave positioning pits empty, i. H. to use no reinforcement there, if this is not necessary, so that not too many variants of a Stirnabschalung must be kept in stock.

Bei dem dargestellten Ausführungsbeispiel ist der Bereich 2a des Schalungsmaterials 2 zwischen der freien Kante und dem Auflagergrund 7 zumindest im Bereich der Positioniervertiefung(en) 6 frei von irgendwelchen Versteifungen, d. h. der Bereich 2a besteht nur aus dem Schalungsmaterial 2. Falls dieses schneid- oder stanzbar ist, ist es möglich, Stirnabschalungen ohne die Positioniervertiefungen 6 auf die Baustelle zu liefern und die Positioniervertiefungen 6 erst auf der Baustelle an den vorbestimmten und für das speziell zu vergießende Beton an den notwendigen Stellen anzubringen.In the illustrated embodiment, the area 2a of the formwork material 2 between the free edge and the support base 7 at least in the region of the positioning recess (s) 6 free of any stiffeners, ie the area 2a consists only of the formwork material 2. If this is cut or punched is, it is possible Stirnabschalungen without delivering the positioning recesses 6 to the construction site and to install the positioning recesses 6 only at the construction site to the predetermined and for the concrete to be cast concrete in the necessary places.

Außerhalb des Bereiches 2a enthält die erfindungsgemäße Stimabschalung 1 jedoch sehr wohl Versteifungen 8, insbesondere, wie im dargestellten Ausführungsbeispiel ersichtlich, in Form wenigstens eines Gitterträgers. Die dargestellten Gitterträger enthalten drei Stäbe, die dreieckförmig durch Querverstrebungen zusammengehalten werden. Insbesondere ist eine der Versteifungen (Gitterträger 8a) unmittelbar anschließend an den Bereich 2a am tafelförmigen Schalungsmaterial 2 befestigt, so dass er den Auflagegrund 7 gegen die von der Bewehrung 5 (und den darauf einwirkenden Betondruck) aufgebrachten Kräfte versteift. Selbst wenn somit das Schalungsmaterial am Auflagergrund 7 verbogen wird oder reißt, kann die darauf abgestützte Bewehrung nicht tiefer in den Beton einsinken, als dies durch die Versteifung 8a gestattet wird. Die Versteifung 8a, d. h. der Gitterträger, verläuft parallel zur freien Kante 3 bzw. parallel zu dem Auflagergrund 7 der Positioniervertiefungen 6.Outside of the region 2a, however, the inventive Stimabschalung 1 very well stiffeners 8, in particular, as seen in the illustrated embodiment, in the form of at least one lattice girder. The lattice girders shown contain three rods which are held together in a triangular manner by cross bracing. In particular, one of the stiffeners (lattice girder 8a) is attached immediately after the region 2a on the tabular formwork material 2, so that it stiffens the support base 7 against the forces applied by the reinforcement 5 (and the concrete pressure acting thereon). Thus, even if the formwork material on the bed 7 is bent or ruptured, the reinforcement supported thereon can not sink deeper into the concrete than is permitted by the stiffener 8a. The stiffener 8a, d. H. the lattice girder runs parallel to the free edge 3 or parallel to the support base 7 of the positioning recesses 6.

Zusätzlich ist die Fläche des tafelförmigen Schalungsmaterials 2 durch weitere Versteifungen, insbesondere in Form von Gitterträgem 8 versteift, wobei im dargestellten Ausführungsbeispiel wenigstens zwei weitere Versteifungen 8b und 8c parallel zum Gitterträger 8a und somit zur freien Kante 3 vorgesehen sind und sich quer zu diesen wenigstens eine vierte Versteifung (Gitterträger 8d) im Wesentlichen senkrecht erstreckt. Auch der Gitterträger 8d endet jedoch am ersten Gitterträger 8a, d. h. an oder unterhalb des Auflagergrunds 7. Statt der Gitterträger kann jedoch jeder andere Art der Versteifung, beispielsweise in Form von Einzelstäben oder -leisten oder dergleichen eingesetzt werden.In addition, the surface of the tabular formwork material 2 is stiffened by further stiffening, in particular in the form of lattice girders 8, wherein in the illustrated embodiment at least two further stiffeners 8b and 8c are provided parallel to the lattice girder 8a and thus to the free edge 3 and transversely to these at least one fourth stiffener (lattice girder 8d) extends substantially perpendicularly. However, the lattice girder 8d ends at the first lattice girder 8a, d. H. Instead of the lattice girder, however, any other type of stiffening, for example in the form of individual bars or bars or the like can be used.

Figur 3 zeigt die Verwendung der erfindungsgemäßen Stimabschalung 1 beim Erstellen einer Arbeitsfuge bei der Herstellung einer Betonplatte. Zu diesem Zweck wird in üblicher Weise eine Plattenschalung aufgebaut, in der die erfindungsgemäße Stimabschalung 1 eingebaut wird. Im dargestellten Ausführungsbeispiel wird die erfindungsgemäße Stirnabschalung 1 einfach auf eine Unterlage 9 gesetzt und ggf. an den seitlichen Schalungswandungen (nicht gezeigt) befestigt. Durch die versteifenden Gitterträger 8 ist die erfindungsgemäße Stirnabschalung 1 im Wesentlichen selbsttätig standfähig. Wie Figur 3 zeigt, ragt der Bereich 2a über die Versteifungen, d. h. die Gitterträger 8 hinaus, so dass eine durchgehende Bewehrung, dargestellt ist ein Bewehrungsstab 5, in die Positioniervertiefung 6 eingelegt werden kann. Dann wird der erste Betonierabschnitt 10 vergossen. FIG. 3 shows the use of the Stimabschalung 1 according to the invention when creating a working joint in the manufacture of a concrete slab. For this purpose, a slab formwork is constructed in the usual way, in which the Stimabschalung invention 1 is installed. In the illustrated embodiment, the invention Stirnabschalung 1 is simply placed on a pad 9 and possibly attached to the side Schalungswandungen (not shown). Due to the stiffening lattice girders 8 Stirnabschalung invention 1 is substantially automatically stable. As FIG. 3 shows the area 2a projects beyond the stiffeners, ie the lattice girders 8, so that a continuous reinforcement, shown is a reinforcing bar 5, can be inserted into the positioning recess 6. Then, the first concreting section 10 is potted.

In Abwandlung der beschriebenen und gezeichneten Ausführungsbeispiele kann auch ein selbstragendes, tafelförmiges Schalungsmaterial eingesetzt werden, in das die Positioniervertiefungen vorab eingebracht werden. Es ist weiterhin möglich eine schlecht oder nicht schneidfähige Tafel eines Schalungsmaterials zu verwenden und den Bereich um die Auflager aus Streckmetall oder einem anderen schneidfähigen Material zu fertigen.In a modification of the described and illustrated embodiments, a self-supporting, tabular formwork material can be used, in which the positioning recesses are introduced in advance. It is also possible to use a poorly or non-cuttable sheet of formwork material and to make the area around the expanded metal or other cuttable material supports.

Claims (6)

  1. Face formwork for a concrete slab, in particular for a ground or floor slab, with a braced formwork panel (2) which is able to stand essentially of its own volition inside a slab shuttering, and the top free edge (3) of which is designed as a support (4) for supporting reinforcing bars (5) traversing the formwork panel (2) introduced into the slab shuttering once the formwork panel (2) has been put in place, and means are provided in order to ensure that the lateral spacing of the reinforcing bars (5) is preserved, characterised in that the means for preserving the lateral spacing of the reinforcing bars comprise a plurality of positioning recesses (6) open towards the top free edge (3) of the formwork panel (2) which extend in a slot-shaped arrangement in a peripheral region (2a) of the formwork panel (2) free of bracing, and the base (7) of every slot-shaped positioning recess (6) constitutes the support for supporting the reinforcing bar (5) to be laid in the positioning recess, and a bracing element (8a) is secured to the formwork panel (2) directly adjacent to the peripheral region (2a) in such a way that it braces the base (7) of every positioning recess (6) serving as the support against the forces expended on it by the co-operating reinforcing bar (5) and the concrete pressure acting on it.
  2. Face formwork as claimed in claim 1, characterised in that the support base (7) is rounded.
  3. Face formwork as claimed in claim 1 and/or 2, characterised in that at least the peripheral region (2a) of the formwork panel (2) is made from expanded metal.
  4. Face formwork as claimed in one of claims 1 to 3, characterised in that the bracing element (8) is provided in the form of a lattice beam extending parallel with the free edge (3).
  5. Face formwork as claimed in one of claims 1 to 4, characterised in that other lattice beams extending parallel with the free edge (3) are provided as a means of bracing the formwork panel (2).
  6. Face formwork as claimed in one of claims 1 to 5, characterised in that at least one lattice beam extending perpendicular to the free edge (3) is provided in addition as a means of bracing the formwork panel (2).
EP08012243A 2007-07-23 2008-07-07 Bulkhead formwork Active EP2022908B1 (en)

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DE202007010219U DE202007010219U1 (en) 2007-07-23 2007-07-23 Stopends

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DE102014017529A1 (en) 2014-11-26 2016-06-02 Fwr Solutions Gmbh Formwork for construction joints with dismantled parts

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DE9301565U1 (en) 1993-02-04 1994-06-01 Peca Verbundtechnik Formwork element
DE9311710U1 (en) * 1993-08-05 1994-12-01 Peca Verbundtechnik Formwork for making a concrete slab
DE29505305U1 (en) 1995-03-29 1996-07-25 Peca Verbundtechnik formwork
DE19722449A1 (en) * 1997-05-28 1998-12-03 Rene P Schmid Shuttering element

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ATE552395T1 (en) 2012-04-15
EP2022908A1 (en) 2009-02-11

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