EP0026803A1 - Construction joint shuttering comprising a former for supporting connecting bars - Google Patents

Construction joint shuttering comprising a former for supporting connecting bars Download PDF

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Publication number
EP0026803A1
EP0026803A1 EP79810113A EP79810113A EP0026803A1 EP 0026803 A1 EP0026803 A1 EP 0026803A1 EP 79810113 A EP79810113 A EP 79810113A EP 79810113 A EP79810113 A EP 79810113A EP 0026803 A1 EP0026803 A1 EP 0026803A1
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EP
European Patent Office
Prior art keywords
connecting rods
storage element
embedding compound
storage
troughs
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP79810113A
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German (de)
French (fr)
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EP0026803B1 (en
Inventor
Hans Dietrich
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Losinger Holding AG
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Losinger AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority to EP79810113A priority Critical patent/EP0026803B1/en
Application filed by Losinger AG filed Critical Losinger AG
Priority to DE7979810113T priority patent/DE2964428D1/en
Priority to AT79810113T priority patent/ATE2155T1/en
Priority to PCT/CH1980/000121 priority patent/WO1981001025A1/en
Priority to CA000361406A priority patent/CA1144774A/en
Priority to JP50217580A priority patent/JPS56501253A/ja
Priority to US06/269,048 priority patent/US4419852A/en
Priority to AU63367/80A priority patent/AU535851B2/en
Publication of EP0026803A1 publication Critical patent/EP0026803A1/en
Application granted granted Critical
Publication of EP0026803B1 publication Critical patent/EP0026803B1/en
Priority to HK518/86A priority patent/HK51886A/en
Priority to MY429/86A priority patent/MY8600429A/en
Expired legal-status Critical Current

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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
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/12—Mounting of reinforcing inserts; Prestressing
    • E04G21/125—Reinforcement continuity box

Definitions

  • the invention relates to a device for storing connecting rods, which is fastened in the formwork during the manufacture of reinforced concrete structures and which has an elongated storage element in which the end sections of the connecting rods which are to be bent out for the connection of a concrete component to be connected later, but first are bent at approximately right angles, are used.
  • room joints also called dilation joints
  • construction joints While the former form a permanent delimitation of one component from another, the latter are only necessary for design reasons; later they are intended to ensure a force-fit connection that largely corresponds to the monolithically cast parts.
  • connecting rods in such a connection.
  • the parts of the connecting rods protruding from the component to be concreted first are bent approximately at right angles and fastens them to the formwork or close to the formwork in such a way that you can bend it out or back again after stripping.
  • a device for storing connecting rods which device is inserted and fastened in the formwork, and when concreting the formation of a hollow space to ensure that the end sections of the connecting rods are bent out.
  • Such storage devices are already known in various designs, including from DE-PS 2 307 073 and from CH-PS 562 376.
  • the first of these prior publications discloses a storage device which consists of storage pieces, storage chest and intermediate spacer bars and is made of an elastically deformable material. The manufacture of this device is very expensive, but has the advantage of being easily removed from the first concrete part.
  • the storage element consists of a foam body in which the end sections of the connecting rods to be bent out are embedded. This solution has been widely used; the scraping out of the foam necessary after stripping the first concrete part of the building is time-consuming and associated with the risk that residues which disrupt the positive connection of the subsequent concrete part remain adhering to the construction joint.
  • the invention is based on the object of specifying a design for a storage device of the type described above which retains the advantages of the previously known embodiments, without their disadvantages.
  • the production should not only be inexpensive, but also the removal of the device that is no longer required after the formwork part of the building has been stripped of concrete should be able to be removed quickly and effortlessly.
  • the storage element mainly consists of a thin-walled molded part made of thermoplastic material (produced by the pressing or deep-drawing process), in which the storage flats open towards the flat side and receiving the end sections, otherwise with a brittle one in the hardened state embedding compound adhering neither to the connecting rods nor to the plastic molded part, the device overall forming a rigid, dimensionally stable structural unit.
  • silicate such as e.g. Gypsum sawdust mixture or foam concrete
  • the desired properties of which can be obtained using additives such as Bentonite are widely controllable.
  • the adhesion of the embedding compound to the component concrete can also be reduced by painting with a release agent, e.g. Avoid white lime.
  • a release agent e.g. Avoid white lime.
  • the side of the securing strips facing away from the embedding compound and / or the free surface of the embedding compound be provided with a coating consisting of a cement setting retarder. Spraying away the non-set surface layer parts with water then results in rough surfaces on the first concrete part of the structure, which favors a good bond in the construction joint that will be created later.
  • the device described here is inserted into a formwork 1 which is intended for a concrete component 2 and is used to store end sections 3b of the connecting rods 3 anchored in this concrete component 2 with their U-shaped part 3a. It has, for example, an elongated, flat-rod-shaped storage element 5 to be fastened to the formwork 1 by nails 4, in which the mentioned, in the present exemplary embodiment, straight end portions 3b of the connecting rods 3, which are to be bent out to connect a concrete component to be connected later, as shown in FIGS. 1 and 3 are inserted, in pairs in two rows such that they overlap in each row, for which purpose the inserted end sections 3b of each pair are arranged at an acute angle to one another.
  • the arrangement of the end sections 3b described above largely determines the shape of two storage troughs 6 which are formed in the storage element 5.
  • This consists mainly of a thin-walled molded part made of thermoplastic, such as polystyrene, for example in the pressing or deep-drawing process, in which the storage troughs 6 are open to the flat side 5a from which the anchoring parts 3a protrude.
  • These troughs 6 receiving the end sections 3b are otherwise filled with an embedding compound 7 which was doughy when introduced, but is brittle when hardened, and neither still adheres to the connecting rods on the plastic molded part so that it can be easily removed as described below.
  • suitable embedding compounds are mixtures based on silicate, such as gypsum sawdust or foam concrete; As already mentioned, bentonite or other additives can be added.
  • the device forms a rigid, dimensionally stable structural unit which can be easily transported, handled and attached to a formwork 1.
  • the element 5 is provided with nail passage holes 9 in its longitudinal edge regions.
  • Elevations 5c, 5d are formed in the latter, one wall part of which - as can be seen from FIG. 2 - lies in the continuation of a curved trough wall part and, together with this, adjoins the convex side of the bending sections 3c of the connecting rods 3 protruding from the storage troughs 6. This ensures that cavities are formed in the concrete of the building part 2 behind the bending sections 3c and so that the later bending back of these sections is practically not impeded.
  • the storage troughs 6, as shown in FIG. 3, have a cross section which is slightly widened from the floor to the flat side 5a, which facilitates the shaping of the storage element 5 during its manufacture. Since there is a lack of adhesion of the embedding compound 7 to the storage element, there is a risk that it, together with the stored connecting rods 3, could fall out of the storage troughs 6, which are flat, for example made of polystyrene, which extend across the storage troughs 6 in the area of the embedding mass 7 adjacent securing strips 8 releasably attached to the wall of the element 5 forming the flat side 5a, for example by spot welding, adhesive connection or by means of rivets, bolts or the like.
  • the storage troughs 6 could narrow towards the flat side, e.g. have a trapezoidal cross section so that the embedding compound 7 is held in them in a form-fitting manner.
  • security strips 8 can be dispensed with.
  • the adhesion of the embedding compound 7 to the building part 2 can be achieved by painting the free surface of this compound with a release agent, such as e.g. White lime should be avoided.
  • a release agent such as e.g. White lime should be avoided.
  • the side of the securing strips 8 facing away from the embedding compound 7 can be profiled, e.g. have a grooving so that the resulting surface parts of the building part 2 are given a corresponding profile, which contributes to the roughening of the subsequently obtained construction joint.
  • this side and / or the free surface of the embedding compound can be provided with a coating consisting of a cement setting retarder; the unfinished surface layer parts on the structure 2 can then be sprayed with water after removal of the device.
  • the brittle embedding compound 7 is to be removed, which can be done by administering a few hammer blows on the end sections 3b of the connecting rods 3. Before or after the bending out of these end sections 3a into the straight continuation of the legs of the anchored section 3a, there are also any securing strips 8 that are used to take away.
  • the device is widely used in the construction of construction joints in reinforced concrete structures of any kind, e.g. when connecting partition walls, steps, light wells, intermediate floors, silo ceilings etc., e.g. on a main wall.

Abstract

PCT No. PCT/CH80/00121 Sec. 371 Date May 28, 1981 Sec. 102(e) Date May 28, 1981 PCT Filed Oct. 2, 1980 PCT Pub. No. WO81/01025 PCT Pub. Date Apr. 16, 1981.A preserving element (5) formed as a synthetic material mould part has preserving troughs (6) in which the bent end sections (3b) of connecting bars (3), later to be bent out, are embedded with a brittle mass (7). The device has the advantage that after the anchoring of the connecting bars (at 3a) in the structural member (2), the element (5) and the mass (7) can be easily removed. The device forms an easily transported and handled structural unit which is usable in the production of construction joints of steel concrete structures of any kind.

Description

Die Erfindung betrifft eine Vorrichtung zum Verwahren von Verbindungsstäben, welche bei der Herstellung von Stahlbetonbauwerken in die Schalung befestigt wird und die ein längliches Verwahrungselement aufweist, in welchem die zum Anschluss eines später anzuschliessenden Betonbauteiles herauszubiegenden, zuerst aber annähernd rechtwinklig abgebogenen Endabschnitte der Verbindungsstäbe eingesetzt sind.The invention relates to a device for storing connecting rods, which is fastened in the formwork during the manufacture of reinforced concrete structures and which has an elongated storage element in which the end sections of the connecting rods which are to be bent out for the connection of a concrete component to be connected later, but first are bent at approximately right angles, are used.

Bei der Herstellung von Betonbauwerken wird zwischen Raumfugen (auch Dilatationsfugen genannt) und Arbeitsfugen unterschieden. Während die erstgenannten eine dauernde Abgrenzung eines Bauteiles gegenüber einem anderen bilden, sind die zweitgenannten nur aus ausführungstechnischen Gründen nötig; sie sollen später eine kraftschlüssige, den monolithisch gegossenen Teilen weitgehend entsprechende Verbindung gewährleisten.When manufacturing concrete structures, a distinction is made between room joints (also called dilation joints) and construction joints. While the former form a permanent delimitation of one component from another, the latter are only necessary for design reasons; later they are intended to ensure a force-fit connection that largely corresponds to the monolithically cast parts.

Es ist üblich, an einer solchen Verbindung Verbindungsstäbe zu beteiligen. Um in der Abschalung der Arbeitsfuge nicht Löcher vorsehen zu müssen, durch welche sich solche Verbindungsstäbe hindurch erstrekken, biegt man die von dem erst zu betonierenden Bauteil ausragenden Teile der Verbindungsstäbe zuerst annähernd rechtwinklig ab und befestigt sie so an die Schalung oder nahe der Schalung, dass man sie nach dem Ausschalen wieder heraus-oder zurückbiegen kann. Um dabei die abgebogenen Teile der Verbindungsstäbe frei vom Beton zu halten und das erwähnte Heraus- und Zurückbiegen zu erleichtern, bedient man sich manchmal einer Vorrichtung zum Verwahren von Verbindungsstäben, welche Vorrichtung in die Schalung eingesetzt und befestigt wird und beim Betonieren die Bildung eines Hohlraumes rund um die auszubiegenden Endabschnitte der Verbindungsstäbe gewährleistet.It is common to involve connecting rods in such a connection. In order not to have to provide holes in the formwork of the construction joint through which such connecting rods extend, the parts of the connecting rods protruding from the component to be concreted first are bent approximately at right angles and fastens them to the formwork or close to the formwork in such a way that you can bend it out or back again after stripping. In order to keep the bent parts of the connecting rods free from the concrete and to facilitate the aforementioned bending out and back bending, one sometimes uses a device for storing connecting rods, which device is inserted and fastened in the formwork, and when concreting the formation of a hollow space to ensure that the end sections of the connecting rods are bent out.

Solche Verwahrungsvorrichtungen sind schon in verschiedenen Ausführungen bekannt, u.a. aus der DE-PS 2 307 073 und aus der CH-PS 562 376. Die erstgenannte dieser Vorveröffentlichungen offenbart eine Verwahrungsvorrichtung, welche aus Verwahrungsstücken, Verwahrungsbrust und zwischenliegenden Abstandleisten besteht und aus einem elastisch verformbaren Werkstoff gefertigt ist. Die Fertigung dieser Vorrichtung ist sehr kostenaufwendig, hat aber den Vorteil des leichten Abziehens vom erstbetonierten Bauwerkteil. Nach der zweiten der beiden obgenannten Veröffentlichungen besteht das Verwahrungselement aus einem Schaumstoffkörper, in welchem die herauszubiegenden Endabschnitte der Verbindungsstäbe eingebettet sind. Diese Lösung hat eine breite Anwendung gefunden; das nach dem Ausschalen des erstbetonierten Bauwerkteiles notwendige Herauskratzen des Schaumstoffes ist aber zeitaufwendig und mit dem Risiko verbunden, dass Rückstände, welche die kraftschlüssige Verbindung des nachkommenden Betonteiles stören, in der Arbeitsfuge haften bleiben.Such storage devices are already known in various designs, including from DE-PS 2 307 073 and from CH-PS 562 376. The first of these prior publications discloses a storage device which consists of storage pieces, storage chest and intermediate spacer bars and is made of an elastically deformable material. The manufacture of this device is very expensive, but has the advantage of being easily removed from the first concrete part. According to the second of the two above-mentioned publications, the storage element consists of a foam body in which the end sections of the connecting rods to be bent out are embedded. This solution has been widely used; the scraping out of the foam necessary after stripping the first concrete part of the building is time-consuming and associated with the risk that residues which disrupt the positive connection of the subsequent concrete part remain adhering to the construction joint.

Der Erfindung liegt die Aufgabe zugrunde, für eine Verwahrungsvorrichtung der oben beschriebenen Gattung eine Ausbildung anzugeben, welche die Vorteile der vorbekannten Ausführungsarten beibehält, ohne dass ihr deren Nachteile anhaften. Die Herstellung soll nicht nur preisgünstig sein, sondern auch das Entfernen der nach dem Ausschalen des erstbetonierten Bauwerkteiles nicht mehr benötigten Vorrichtung soll rasch und mühelos erfolgen können.The invention is based on the object of specifying a design for a storage device of the type described above which retains the advantages of the previously known embodiments, without their disadvantages. The production should not only be inexpensive, but also the removal of the device that is no longer required after the formwork part of the building has been stripped of concrete should be able to be removed quickly and effortlessly.

Die Aufgabe wird dadurch gelöst, dass das Verwahrungselement hauptsächlich aus einem dünnwändigen, aus thermoplastischem Kunststoff gebildeten, (im Press-oder Tiefziehverfahren hergestellten) Formteil besteht, bei dem zur Flachseite hin offene, die Endabschnitte aufnehmende Verwahrungsmulden, im übrigen mit einer im erhärteten Zustand spröden, weder auf die Verbindungsstäbe noch auf das Kunststofformteil haftende Einbettungsmasse gefüllt sind, wobei die Vorrichtung insgesamt eine steife, formbeständige Baueinheit bildet.The object is achieved in that the storage element mainly consists of a thin-walled molded part made of thermoplastic material (produced by the pressing or deep-drawing process), in which the storage flats open towards the flat side and receiving the end sections, otherwise with a brittle one in the hardened state embedding compound adhering neither to the connecting rods nor to the plastic molded part, the device overall forming a rigid, dimensionally stable structural unit.

Als Einbettungsmasse werden mit Vorteil Gemische auf Silikat-Basis verwendet, wie z.B. Gips-Sägemehlgemisch oder.Schaumbeton, dessen erwünschte Eigenschaften durch Zusatzmittel, wie z.B. Bentonit, breit steuerbar sind. Auch lässt sich die Haftung der Einbettungsmasse am Bauteilbeton durch einen Trennmittelanstrich, wie z.B. Weisskalk, leicht vermeiden. Zum Freilegen der Anschlusseisen genügt es, nach dem Ausschalen das aus thermoplastischem Kunststoff gebildete Verwahrungselement abzureissen und die Endabschnitte der Verbindungsstäbe mit wenigen Hammerschlägen von der spröden Einbettungsmasse zu befreien.Mixtures based on silicate, such as e.g. Gypsum sawdust mixture or foam concrete, the desired properties of which can be obtained using additives such as Bentonite, are widely controllable. The adhesion of the embedding compound to the component concrete can also be reduced by painting with a release agent, e.g. Avoid white lime. To expose the connecting iron, it is sufficient to tear off the storage element formed from thermoplastic plastic after stripping and to free the end sections of the connecting rods from the brittle embedding compound with a few hammer blows.

Um das Herausfallen der Verbindungsstäbe und der Einbettungsmasse aus dem Verwahrungselement zu verhindern, ist es empfehlenswert, Verwahrungsmulden mit schwalbenschwanzförmigem Querschnitt vorzusehen, oder auf das Verwahrungselement quer über die Verwahrungsmulden flache Sicherungsstreifen lösbar zu befestigen.In order to prevent the connecting rods and the embedding compound from falling out of the storage element, it is advisable to provide storage troughs with a dovetail-shaped cross section, or to detachably fasten flat securing strips on the storage element across the storage troughs.

In einer bevorzugten Ausführungsform ist vorgesehen, dass an der Flachseite des Verwahrungselementes Erhebungen ausgebildet sind, welche an die konvexe Seite der aus den Verwahrungsmulden herausragenden Biegungsabschnitte der Verbindungsstäbe angrenzen. Dadurch gelingt es, die Vorrichtung so dünn und damit auch so leicht wie möglich zu halten, zugleich aber auch zu erreichen, dass auf der konvexen Seite der Biegungsabschnitte kein Beton liegt, welcher deren Zurückbiegen behindern würde.In a preferred embodiment it is provided that on the flat side of the storage element tes elevations are formed, which adjoin the convex side of the bending sections of the connecting rods projecting from the storage troughs. This makes it possible to keep the device as thin and therefore as light as possible, but at the same time also to ensure that there is no concrete on the convex side of the bending sections which would hinder its bending back.

Zudem kann vorgesehen seiri, die von der Einbettungsmasse abgewandte Seite der Sicherungsstreifen und/oder die freie Oberfläche der Einbettungsmasse mit einem aus einem Zementabbindeverzögerer bestehenden Ueberzug zu versehen. Durch Wegspritzen der nicht abgebundenen Oberflächenschichtteile mit Wasser ergeben sich dann am erstbetonierten Bauwerkteil rauhe Oberflächen, die einen guten Verband in der später entstehenden Arbeitsfuge begünstigen.In addition, it can be provided that the side of the securing strips facing away from the embedding compound and / or the free surface of the embedding compound be provided with a coating consisting of a cement setting retarder. Spraying away the non-set surface layer parts with water then results in rough surfaces on the first concrete part of the structure, which favors a good bond in the construction joint that will be created later.

Die Erfindung.wird nachfolgend anhand beiliegender Zeichnung beispielsweise erläutert. Es zeigen:

  • Fig. 1 eine schematische Draufsicht einer Ausführungsform der erfindungsgemässen Vorrichtung, in welcher die Endabschnitte und grösstenteils auch die Biegungsabschnitte von acht Verbindungsstäben verwahrt sind,
  • Fig. 2 eine perspektivische Ansicht des zu dieser Vorrichtung gehörenden Verwahrungselementes,
  • Fig. 3 einen Querschnitt nach der Linie III-III der Fig. l, und
  • Fig. 4 einen Teilquerschnitt einer Ausführungsvariante des Verwahrungselementes.
The invention is explained below with reference to the accompanying drawing, for example. Show it:
  • 1 shows a schematic top view of an embodiment of the device according to the invention, in which the end sections and for the most part also the bending sections of eight connecting rods are stored,
  • 2 is a perspective view of the storage element belonging to this device,
  • Fig. 3 shows a cross section along the line III-III of Fig. 1, and
  • Fig. 4 is a partial cross section of an embodiment of the storage element.

Die hier beschriebene Vorrichtung'wird in eine Schalung l, welche für einen Betonbauteil 2 bestimmt ist, eingesetzt und dient zum Verwahren von Endabschnitten 3b der mit ihrem U-förmigen Teil 3a in diesem Betonbauteil 2 verankerten Verbindungsstäbe 3. Sie hat ein z.B. durch Nägel 4 an der Schalung 1 zu befestigendes, längliches, flachstabförmiges Verwahrungselement 5, in dem die erwähnten, zum Anschluss eines später anzuschliessenden Betonbauteiles herauszubiegenden, im vorliegenden Ausführungsbeispiel geradlinigen Endabschnitte 3b der Verbindungsstäbe 3 gegmäss der Darstellung in Fig. 1 und 3 eingesetzt sind, und zwar paarweise in zwei Reihen derart, dass sie sich in jeder Reihe überlappen, wozu die eingesetzten Endabschnitte 3b jedes Paares in einem spitzen Winkel zueinander angeordnet sind.The device described here is inserted into a formwork 1 which is intended for a concrete component 2 and is used to store end sections 3b of the connecting rods 3 anchored in this concrete component 2 with their U-shaped part 3a. It has, for example, an elongated, flat-rod-shaped storage element 5 to be fastened to the formwork 1 by nails 4, in which the mentioned, in the present exemplary embodiment, straight end portions 3b of the connecting rods 3, which are to be bent out to connect a concrete component to be connected later, as shown in FIGS. 1 and 3 are inserted, in pairs in two rows such that they overlap in each row, for which purpose the inserted end sections 3b of each pair are arranged at an acute angle to one another.

Wie aus Fig. l zu ersehen ist, sind die Endabschnitte von sechs der acht Verbindungsstäbe nach links gerichtet, diejenigen der zwei Verbindungsstäbe, die beim linksseitigen Ende dieser Fig. 1 dargestellt sind, nach rechts gerichtet, wobei sie einige der nach links gerichteten Endabschnitte überlagern. Durch diese Anordnung ergibt sich eine volle Ausnützung der Länge des Verwahrungselementes 5. Sämtliche Endabschnitte 3b sind durch Biegungsabschnitte 3c etwa rechtwinklig an die zum Verankern im Betonbauteil 2 bestimmten Verankerungsabschnitte 3a angeschlossen.As can be seen from Fig. 1, the end portions of six of the eight tie rods are directed to the left, those of the two tie rods shown at the left end of this Fig. 1 are directed to the right, overlapping some of the left end portions . This arrangement results in a full utilization of the length of the storage element 5. All end sections 3b are connected at right angles to the anchoring sections 3a intended for anchoring in the concrete component 2 by means of bending sections 3c.

Die oben beschriebene Anordnung der Endabschnitte 3b bestimmt weitgehend die Form von zwei Verwahrungsmulden 6, die im Verwahrungselement 5 ausgebildet sind.The arrangement of the end sections 3b described above largely determines the shape of two storage troughs 6 which are formed in the storage element 5.

Dieses besteht hauptsächlich aus einem dünnwandigen, aus thermoplastischem Kunststoff, wie z.B. Polystyrol, z.B. im Press- oder Tiefziehverfahren gebildeten Formteil, bei dem die Verwahrungsmulden 6 zur Flachseite 5a hin offen sind, aus der die Verankerungsteile 3a vorstehen. Diese die Endabschnitte 3b aufnehmenden Mulden 6 sind im übrigen mit einer Einbettungsmasse 7 gefüllt, die beim Einbringen teigig war, aber im erhärteten Zustand spröde ist, und weder an den Verbindungsstäben noch auf dem Kunststofformteil haftet, damit sie nachfolgend - wie unten beschrieben - leicht entfernt werden kann. Als Einbettungsmasse eignen sich z.B. Gemische auf Silikatbasis, wie Gips-Sägemehl oder Schaumbeton; es kann, wie schon erwähnt, Bentonit oder anderes Zusatzmittel beigemischt sein. Im fertigen Zustand bildet die Vorrichtung eine steife, formbeständige Baueinheit, die leicht transportiert, gehandhabt und an einer Schalung 1 befestigt werden kann. Das Element 5 ist in seinen Längsrandbereichen mit Nageldurchlasslöchern 9 versehen.This consists mainly of a thin-walled molded part made of thermoplastic, such as polystyrene, for example in the pressing or deep-drawing process, in which the storage troughs 6 are open to the flat side 5a from which the anchoring parts 3a protrude. These troughs 6 receiving the end sections 3b are otherwise filled with an embedding compound 7 which was doughy when introduced, but is brittle when hardened, and neither still adheres to the connecting rods on the plastic molded part so that it can be easily removed as described below. Examples of suitable embedding compounds are mixtures based on silicate, such as gypsum sawdust or foam concrete; As already mentioned, bentonite or other additives can be added. In the finished state, the device forms a rigid, dimensionally stable structural unit which can be easily transported, handled and attached to a formwork 1. The element 5 is provided with nail passage holes 9 in its longitudinal edge regions.

Am Verwahrungselement 5 liegt eine rundherum verlaufende Mantelwand 5b vor, an welche die die Flachseite 5a bildende Deckwand anschliesst. In dieser sind Erhebungen 5c, 5d ausgebildet, deren einer Wandungsteil - wie aus Fig. 2 ersichtlich - in der Fortsetzung eines gekrümmten Muldenwandungsteiles liegt und mit diesem-zusammen an die konvexe Seite der aus den Verwahrungsmulden 6 herausragenden Biegungsabschnitte 3c der Verbindungsstäbe 3 angrenzt. Damit wird erreicht, dass im Beton des Bauwerkteiles 2 hinter den Biegungsabschnitten 3c Hohlräume gebildet werden und so das spätere Zurückbiegen dieser Abschnitte praktisch nicht behindert ist.On the storage element 5 there is an all-round jacket wall 5b, to which the top wall forming the flat side 5a adjoins. Elevations 5c, 5d are formed in the latter, one wall part of which - as can be seen from FIG. 2 - lies in the continuation of a curved trough wall part and, together with this, adjoins the convex side of the bending sections 3c of the connecting rods 3 protruding from the storage troughs 6. This ensures that cavities are formed in the concrete of the building part 2 behind the bending sections 3c and so that the later bending back of these sections is practically not impeded.

Die Verwahrungsmulden 6 haben nach der Darstellung in Fig. 3 einen sich vom Boden zur Flachseite 5a schwach erweiterten Querschnitt, was das Ausformen des Verwahrungselementes 5 bei dessen Herstellung erleichtert. Da wegen der fehlenden Haftung der Einbettungsmasse 7 am Verwahrungselement die Gefahr bestände, dass sie samt den verwahrten Verbindungsstäben 3 aus den Verwahrungsmulden 6 herausfallen könnte, sind flache, z.B. aus Polystyrol bestehende, sich quer über die Verwahrungsmulden 6 erstreckende, im Bereich derselben an die Einbettungsmasse 7 anliegende Sicherungsstreifen 8 an der die Flachseite 5a bildenden Wand des Elementes 5 lösbar befestigt, z.B. durch Punktschweissung, Klebeverbindung oder mittels Nieten, Bolzen oder dgl.The storage troughs 6, as shown in FIG. 3, have a cross section which is slightly widened from the floor to the flat side 5a, which facilitates the shaping of the storage element 5 during its manufacture. Since there is a lack of adhesion of the embedding compound 7 to the storage element, there is a risk that it, together with the stored connecting rods 3, could fall out of the storage troughs 6, which are flat, for example made of polystyrene, which extend across the storage troughs 6 in the area of the embedding mass 7 adjacent securing strips 8 releasably attached to the wall of the element 5 forming the flat side 5a, for example by spot welding, adhesive connection or by means of rivets, bolts or the like.

In einer Ausführungsvariante, die in Fig. 4 veranschaulicht ist, könnten die Verwahrungsmulden 6 einen sich zur Flachseite hin verengenden, z.B. trapezförmigen Querschnitt haben, damit in ihnen die Einbettungsmasse 7 formschlüssig gehalten ist. Bei solcher Gestaltung kann auf Sicherungsstreifen 8 verzichtet werden.In an embodiment variant, which is illustrated in Fig. 4, the storage troughs 6 could narrow towards the flat side, e.g. have a trapezoidal cross section so that the embedding compound 7 is held in them in a form-fitting manner. With such a design, security strips 8 can be dispensed with.

Die Haftung der Einbettungsmasse 7 am Bauwerkteil 2 kann durch einen Anstrich der freien Oberfläche dieser Masse mit einem Trennmittel, wie z.B. Weisskalk, vermieden werden.The adhesion of the embedding compound 7 to the building part 2 can be achieved by painting the free surface of this compound with a release agent, such as e.g. White lime should be avoided.

Die von der Einbettungsmasse 7 abgewandte Seite der Sicherungsstreifen 8 kann eine Profilierung, z.B. eine Rillung besitzen, damit die daran entstehenden Flächenteile des Bauwerkteiles 2 eine entsprechende Profilierung erhalten, was zur Aufrauhung der nachfolgend erhaltenen Arbeitsfuge beiträgt.The side of the securing strips 8 facing away from the embedding compound 7 can be profiled, e.g. have a grooving so that the resulting surface parts of the building part 2 are given a corresponding profile, which contributes to the roughening of the subsequently obtained construction joint.

Zum gleichen Zwecke kann diese Seite und/oder die freie Oberfläche der Einbettungsmasse mit einem aus einem Zementabbindeverzögerer bestehenden Ueberzug versehen werden; die unfertig abgebundenen Oberflächenschichtteile am Bauwerk 2 können dann nach Wegnahme der Vorrichtung mit Wasser abgespritzt werden.For the same purpose, this side and / or the free surface of the embedding compound can be provided with a coating consisting of a cement setting retarder; the unfinished surface layer parts on the structure 2 can then be sprayed with water after removal of the device.

Nach Wegnahme der Schalung 1 und des Verwahrungselementes 5 ist die spröde Einbettungsmasse 7 zu entfernen, was durch Verabfolgung einiger weniger Hammerschläge auf die Endabschnitte 3b der Verbindungsstäbe 3 erfolgen kann. Vor oder nach dem Herausbiegen dieser Endabschnitte 3a in die geradlinige Fortsetzung der Schenkel des verankerten Abschnittes 3a sind auch noch die allfällig verwendeten Sicherungsstreifen 8 wegzunehmen.After the formwork 1 and the storage element 5 have been removed, the brittle embedding compound 7 is to be removed, which can be done by administering a few hammer blows on the end sections 3b of the connecting rods 3. Before or after the bending out of these end sections 3a into the straight continuation of the legs of the anchored section 3a, there are also any securing strips 8 that are used to take away.

Die Vorrichtung findet eine breite Verwendung bei der Herstellung von Arbeitsfugen in Stahlbetonbauwerken irgendwelcher Art, z.B. beim Anschliessen von Zwischenwänden, Stufen, Lichtschächten, Zwischenböden, Silodecken usw., z.B. an einer Hauptwand.The device is widely used in the construction of construction joints in reinforced concrete structures of any kind, e.g. when connecting partition walls, steps, light wells, intermediate floors, silo ceilings etc., e.g. on a main wall.

Claims (6)

1. Vorrichtung zum Verwahren von Verbindungsstäben, welche bei der Herstellung von Stahlbetonbauwerken in die Schalung befestigt wird und ein längliches Verwahrungselement aufweist, in welchem die annähernd rechtwinklig abgebogenen Endabschnitte der Verbindungsstäbe eingesetzt sind, dadurch gekennzeichnet, dass das Verwahrungselement (5) hauptsächlich aus einem dünnwandigen, aus thermoplastischem Kunststoff gebildeten Formteil besteht, bei dem zur Flachseite (5a) hin offene, die Endabschnitte (3b) aufnehmende Verwahrungsmulden (6) im übrigen mit einer im erhärteten Zustand spröden Einbettungsmasse (7) gefüllt sind, wobei die Vorrichtung insgesamt eine steife, formbeständige Baueinheit bildet.1. Device for storing connecting rods, which is attached to the formwork in the manufacture of reinforced concrete structures and has an elongated storage element in which the approximately right-angled end sections of the connecting rods are inserted, characterized in that the storage element (5) mainly consists of a thin-walled part , Made of thermoplastic plastic, in which open to the flat side (5a), the end portions (3b) receiving troughs (6) are filled with a brittle embedding compound (7) in the hardened state, the device overall being a rigid, dimensionally stable unit forms. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass an der Flachseite des Verwahrungselementes Erhebungen (5c, 5d) ausgebildet sind, welche an die konvexe Seite der aus den Verwahrungsmulden herausragenden Biegungsabschnitte (3c) der Verbindungsstäbe angrenzen.2. Device according to claim 1, characterized in that elevations (5c, 5d) are formed on the flat side of the storage element which adjoin the convex side of the bending sections (3c) of the connecting rods which protrude from the storage troughs. 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Verwahrungsmulden eine sich zur genannten Flachseite hin verengende Querschnittsform haben (Fig. 4).3. Device according to claim 1 or 2, characterized in that the storage troughs have a cross-sectional shape narrowing towards said flat side (Fig. 4). 4. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass an der Flachseite des Verwahrungselementes (5) flache Sicherungsstreifen (8) lösbar befestigt sind, die sich quer über die Verwahrungsmulden hinweg erstrecken und im Bereich derselben an der Einbettungsmasse anliegen.4. The device according to claim 1 or 2, characterized in that on the flat side of the storage element (5) flat securing strips (8) are releasably attached, which extend across the storage troughs and rest in the same area on the embedding compound. 5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die von der Einbettungsmasse abgewandte Seite der Sicherungsstreifen eine Profilierung aufweist.5. The device according to claim 4, characterized in that the side of the securing strip facing away from the embedding compound has a profile. 6. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die von der Einbettungsmasse abgewandte Seite der Sicherungsstreifen und/oder die freie Oberfläche der Einbettungsmasse mit einem aus einem Zementabbindeverzögerer bestehenden Ueberzug versehen ist.6. The device according to claim 4, characterized in that the side of the securing strips facing away from the embedding compound and / or the free surface of the embedding compound is provided with a coating consisting of a cement setting retarder.
EP79810113A 1979-10-03 1979-10-03 Construction joint shuttering comprising a former for supporting connecting bars Expired EP0026803B1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
DE7979810113T DE2964428D1 (en) 1979-10-03 1979-10-03 Construction joint shuttering comprising a former for supporting connecting bars
AT79810113T ATE2155T1 (en) 1979-10-03 1979-10-03 FORMWORK DEVICE WITH A BASE SHELL AND WITH CONNECTING RODS.
EP79810113A EP0026803B1 (en) 1979-10-03 1979-10-03 Construction joint shuttering comprising a former for supporting connecting bars
CA000361406A CA1144774A (en) 1979-10-03 1980-10-02 Receptacle for reinforcing bars
PCT/CH1980/000121 WO1981001025A1 (en) 1979-10-03 1980-10-02 Lining device for connection irons of concrete construction parts
JP50217580A JPS56501253A (en) 1979-10-03 1980-10-02
US06/269,048 US4419852A (en) 1979-10-03 1980-10-02 Device for preserving connecting bars for concrete structural members
AU63367/80A AU535851B2 (en) 1979-10-03 1980-10-02 Lining device for connection irons of concrete construction parts
HK518/86A HK51886A (en) 1979-10-03 1986-07-03 Construction joint shuttering comprising a former for supporting connecting bars
MY429/86A MY8600429A (en) 1979-10-03 1986-12-30 Shuttering-off device with a base pan and with connection bars

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP79810113A EP0026803B1 (en) 1979-10-03 1979-10-03 Construction joint shuttering comprising a former for supporting connecting bars

Publications (2)

Publication Number Publication Date
EP0026803A1 true EP0026803A1 (en) 1981-04-15
EP0026803B1 EP0026803B1 (en) 1982-12-29

Family

ID=8186534

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79810113A Expired EP0026803B1 (en) 1979-10-03 1979-10-03 Construction joint shuttering comprising a former for supporting connecting bars

Country Status (9)

Country Link
US (1) US4419852A (en)
EP (1) EP0026803B1 (en)
JP (1) JPS56501253A (en)
AT (1) ATE2155T1 (en)
CA (1) CA1144774A (en)
DE (1) DE2964428D1 (en)
HK (1) HK51886A (en)
MY (1) MY8600429A (en)
WO (1) WO1981001025A1 (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983002128A1 (en) * 1981-12-15 1983-06-23 JÄRVINEN, Pekka Prefabricated concrete reinforcement element and method for making reinforcement joints
EP0103060A1 (en) * 1982-09-10 1984-03-21 Pawe Ag Reinforcement-iron holder for use in joining cast concrete work and method of manufacturing the same
WO1984002369A1 (en) * 1982-12-07 1984-06-21 Rake Oy Prefabricated concrete reinforcing element and a cassette for use in this element
EP0165367A1 (en) * 1984-06-21 1985-12-27 Pebea N.V. Reinforcement-iron holder for use in joining cast concrete work
FR2592418A1 (en) * 1986-01-02 1987-07-03 Mure Ets Method for indenting reinforcement elements for the connection between two parts of a concrete structure and device for the implementation thereof
FR2615226A1 (en) * 1987-05-15 1988-11-18 Habermann Pierre Negative formwork device incorporating at least one element with flexible walls, intended for fitting corner connection bars or the like
FR2656891A2 (en) * 1988-11-18 1991-07-12 Gozard Jean Profiled section for underpinning concrete work
DE9113086U1 (en) * 1991-10-21 1992-04-30 Betomax Kunststoff- Und Metallwarenfabrik Gmbh, 4040 Neuss, De
FR2686360A1 (en) * 1992-01-22 1993-07-23 Vadala Pierrino Tool for incorporating reinforcements in a concrete construction
FR2710091A1 (en) * 1993-09-16 1995-03-24 Sauveplane Pierre Device for placing and positioning reinforcement bars in formwork (shuttering) for reinforced concrete
EP2025833A1 (en) * 2007-08-10 2009-02-18 Philipp GmbH Holder for rope loop
WO2013050671A1 (en) * 2011-10-04 2013-04-11 Auney Herve Plastic one-piece continuity box and device obtained with such a box

Families Citing this family (8)

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AT376267B (en) * 1982-12-13 1984-10-25 Avi Alpenlaendische Vered CONNECTING PART FOR TWO STEEL CONCRETE ELEMENTS
FR2554483B1 (en) * 1983-11-09 1988-06-17 Moreau Pierre REINFORCEMENT POSITIONING BOX
FR2560913B1 (en) * 1984-03-09 1986-10-24 Quille Entreprise DEVICE FOR MAINTAINING ON A FORMWORK ELEMENT A GRAVING FUR AND A PENDING IRON SUPPORT
EP0230206B1 (en) * 1986-01-15 1990-07-18 Pebea N.V. Reinforcement-iron for use in joining cast concrete work
DE8717062U1 (en) * 1987-12-29 1988-04-07 Max Frank Gmbh & Co Kg, 8448 Leiblfing, De
US4984401A (en) * 1989-07-31 1991-01-15 Dayton Superior Corporation Device and method for housing a steel reinforcement in an area where joints are made between first and subsequently poured concrete structures
IL162417A (en) * 2004-06-09 2013-05-30 Doma Marketing For Building & Trading 1996 Ltd Reinforcement bar box for concrete structures
WO2008052243A1 (en) * 2006-11-02 2008-05-08 Sugar Steel Engineering Pty Ltd Void former

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US1715743A (en) * 1928-02-17 1929-06-04 James J Duggan Furring construction
US1798134A (en) * 1928-08-23 1931-03-31 Daniel B Danielson Veneer bond
DE2307073C2 (en) * 1973-02-14 1974-11-14 Hochtief Ag Fuer Hoch- Und Tiefbauten Vorm. Gebr. Helfmann, 4300 Essen Device for storing wall connection iron
CH562376A5 (en) * 1974-02-27 1975-05-30 Brechbuehler Fritz

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983002128A1 (en) * 1981-12-15 1983-06-23 JÄRVINEN, Pekka Prefabricated concrete reinforcement element and method for making reinforcement joints
EP0103060A1 (en) * 1982-09-10 1984-03-21 Pawe Ag Reinforcement-iron holder for use in joining cast concrete work and method of manufacturing the same
US4549384A (en) * 1982-09-10 1985-10-29 Pebea N.V. Reinforcing rod holder for use in connection-type concrete pouring operations and a method of producing same
WO1984002369A1 (en) * 1982-12-07 1984-06-21 Rake Oy Prefabricated concrete reinforcing element and a cassette for use in this element
EP0165367A1 (en) * 1984-06-21 1985-12-27 Pebea N.V. Reinforcement-iron holder for use in joining cast concrete work
FR2592418A1 (en) * 1986-01-02 1987-07-03 Mure Ets Method for indenting reinforcement elements for the connection between two parts of a concrete structure and device for the implementation thereof
FR2615226A1 (en) * 1987-05-15 1988-11-18 Habermann Pierre Negative formwork device incorporating at least one element with flexible walls, intended for fitting corner connection bars or the like
FR2656891A2 (en) * 1988-11-18 1991-07-12 Gozard Jean Profiled section for underpinning concrete work
DE9113086U1 (en) * 1991-10-21 1992-04-30 Betomax Kunststoff- Und Metallwarenfabrik Gmbh, 4040 Neuss, De
FR2686360A1 (en) * 1992-01-22 1993-07-23 Vadala Pierrino Tool for incorporating reinforcements in a concrete construction
FR2710091A1 (en) * 1993-09-16 1995-03-24 Sauveplane Pierre Device for placing and positioning reinforcement bars in formwork (shuttering) for reinforced concrete
EP2025833A1 (en) * 2007-08-10 2009-02-18 Philipp GmbH Holder for rope loop
WO2013050671A1 (en) * 2011-10-04 2013-04-11 Auney Herve Plastic one-piece continuity box and device obtained with such a box

Also Published As

Publication number Publication date
CA1144774A (en) 1983-04-19
WO1981001025A1 (en) 1981-04-16
US4419852A (en) 1983-12-13
EP0026803B1 (en) 1982-12-29
JPS56501253A (en) 1981-09-03
ATE2155T1 (en) 1983-01-15
DE2964428D1 (en) 1983-02-03
HK51886A (en) 1986-07-11
MY8600429A (en) 1986-12-31

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