EP0500029A2 - Flat steel concrete anchor for precast concrete parts - Google Patents

Flat steel concrete anchor for precast concrete parts Download PDF

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Publication number
EP0500029A2
EP0500029A2 EP92102649A EP92102649A EP0500029A2 EP 0500029 A2 EP0500029 A2 EP 0500029A2 EP 92102649 A EP92102649 A EP 92102649A EP 92102649 A EP92102649 A EP 92102649A EP 0500029 A2 EP0500029 A2 EP 0500029A2
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EP
European Patent Office
Prior art keywords
flat steel
opening
plane
concrete
concrete anchor
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Granted
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EP92102649A
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German (de)
French (fr)
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EP0500029A3 (en
EP0500029B1 (en
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Siegfried Fricker
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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
    • E04G21/14—Conveying or assembling building elements
    • E04G21/142—Means in or on the elements for connecting same to handling apparatus

Definitions

  • the invention relates to a flat steel concrete anchor for precast concrete of the type specified in the preamble of claim 1.
  • Such a flat steel concrete anchor is known for example from DE-C 39 04 772.
  • the flat steel part in this embodiment has at least two sections in the anchoring area, which are shaped in opposite directions to form hook-shaped bends and, seen in the longitudinal direction of the reinforcing bar to be inserted, form an essentially closed shape.
  • the known arrangement offers sufficiently large saddle surfaces for the concrete and also a good connection to the reinforcing bar, the orientation of the flat steel concrete anchor is always tied to the direction in which the reinforcing bar or the additional iron runs.
  • the object of the present invention to provide a flat steel concrete anchor of the generic type which is simpler and cheaper to manufacture.
  • the anchor should not be tied to the direction and position of reinforcing bars or additional bars.
  • the flat steel concrete anchor forms a closed force corner in its anchoring area, which can withstand extremely high loads.
  • only simple stamping and embossing processes can be carried out, which enable precise series production with simple means.
  • the flat steel concrete anchor according to the invention can be used with or without additional iron, since the saddle surfaces can also transmit the anchoring forces within certain limits and that the arrangement of the flat steel concrete anchor in the concrete part is completely independent of the direction of the additional iron, provided that this is for the Interaction with the flat steel concrete anchor are provided.
  • the opening in the anchoring area is preferably formed by a punched hole with an elongated shape, the longer extension of which extends in the direction of the longitudinal axis of the flat steel.
  • the elongated shape of the opening results in a corresponding length of the webs, so that the webs can be curved without excessive tensile stress in the material.
  • the distance of the opening in the anchoring area from the end of the flat steel corresponds at least to the distance that the opening for the hoist from the end the connection area is distant.
  • the distance of the opening arranged in the anchoring area from the end of the flat steel should be greater than the width of each of the webs arranged on the side of the opening.
  • the opening in the anchoring area specified in claim 1 Due to the shape of the opening in the anchoring area specified in claim 1, it is possible to carry out one or more supplementary irons in any direction. So that the flat steel concrete anchor is held securely on an additional iron running in the plane of the flat steel concrete anchor, but transversely to this, even before it is embedded in the concrete, the opening in this direction should have a corresponding cross-section through which the flat steel surrounds the additional iron in a form-fitting manner. In order to achieve this shape, it is considered particularly suitable that the opening cross section in the parallel to the flat steel plane has a width which corresponds at least approximately to the thickness of the flat steel.
  • the elongated hole have a shorter extension transverse to the longitudinal axis, which is at least 0.3 times and at most 0.6 times, preferably approximately 0.35 -fold to 0.5 times the longer extension. It is assumed that this shorter extension of the elongated hole or opening is not much larger than the diameter of the additional iron.
  • the shape of the opening in the anchoring area can be that of an oval or an ellipse, seen in the top view of the flat steel. It is proposed as particularly suitable that the opening, viewed in plan view of the flat steel, has the shape of an elongated hole with parallel side edges and semicircular end sections.
  • the flat steel concrete anchor 1 shown in Fig. 1 has a connection area 2 with an opening 3 for hanging a - not shown in the drawing - hoist and an anchoring area 4, which is embedded, for example, in a precast concrete part.
  • the anchoring area 4 has an opening 5, in addition to which lateral webs 6 and 7 are present. These webs 6 and 7 run parallel to a longitudinal central axis 8. However, they are arched out of the plane of the flat steel, in opposite directions, i.e. in relation to the flat steel plane, the web 6 is curved downwards and the web 7 is curved upwards.
  • This curvature of the webs 6 and 7 ensures that the opening 5 also has an opening cross section parallel to the flat steel plane in addition to the opening cross section which is present orthogonally to the flat steel plane.
  • saddle surfaces 9 and 10 for the concrete are formed by the curvatures of the webs 6 and 7, which are arranged symmetrically on both sides of the longitudinal central axis 8 and thus lead to a uniform force distribution under load.
  • Fig. 2 shows the side view of the flat steel concrete anchor 1 with its connection area 2, the anchoring area 4 and the openings 3 and 5. From this side view, the oppositely curved shape of the webs 6 and 7 with their saddle surfaces 9 and 10 can be seen.
  • the opening 5 In the direction parallel to the flat steel plane, the opening 5 has an opening cross section with a clear width W, which in the example in FIG. 2 is slightly larger than the thickness D of the flat steel. This opening cross-section enables an additional iron or reinforcing bar to be carried out at least approximately parallel to the flat steel plane.
  • FIG. 3a and 3b each show a top view of the flat steel concrete anchor 1, the flat steel concrete anchor in FIG. 3a having an opening 5 'designed as an elongated hole with two parallel side edges 11 and end semicircles 12 and that in FIG. 3b an oval opening 5' 'owns.
  • the opening 3 for hanging a hook or the like is provided, which is arranged in a distance S from the end of the flat steel.
  • the opening 5 ′ or 5 ′′ has a longer axis L which extends in the longitudinal direction of the flat steel concrete anchor 1 and a shorter axis 1 which runs transversely to the axis L.
  • the extension of the shorter axis 1 in FIG. 3a is 0.35 times the longer axis L.
  • the shorter axis 1 in FIG. 3b is 0.5 times the longer axis L.
  • the width of the webs 6 and 7 is labeled B.
  • the distance A of the opening 5 'or 5' 'from the end of the anchoring area 4 should correspond at least to the distance S. In the exemplary embodiment, the distance A is slightly larger than the distance S.
  • FIG. 4 shows a flat steel concrete anchor 1 in a perspective view as in FIG. 1, but with a bent additional iron 13 led through the opening 5. Otherwise, the reference symbols in FIG. 4 correspond to those in FIG. 1 for identical parts.
  • FIG. 5 shows such a flat steel concrete anchor 1 with two elongated supplementary irons 14 and 15 which run through the opening 5.
  • the allowance iron 14 extends orthogonally to the plane of the flat steel and the allowance iron 15 in the flat steel plane, the allowance iron 15 lying in the curvatures of the webs 6 and 7, respectively.
  • Crossed by the arranged additional iron 14 and 15, the flat steel concrete anchor 1 is already securely positioned before embedding in the concrete, so that additional securing of the position is not required.
  • connection area 2 protrudes into a hemispherical depression 18 on the surface of the concrete pipe 17, so that the opening 3 in the connection area 2 is easily accessible.
  • the anchoring area 4 is embedded in the concrete pipe and two additional iron 19 and 20 run through the opening 5 in the anchoring area 4.
  • the additional iron 19 is arranged in the plane of the flat steel and the additional iron 20 runs in an arc shape corresponding to the curvature of the concrete pipe 17 and thus occurs approximately at right angles to the flat steel plane through opening 5.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Panels For Use In Building Construction (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Rod-Shaped Construction Members (AREA)

Abstract

The invention relates to flat steel concrete anchors for precast concrete parts, which customarily comprise a connecting region, lying close to the surface of the precast concrete part and having an opening for a hoist, and an anchoring region, lying deeper in the precast concrete part and possessing, at at least one point, portions which project from the plane of the flat steel and through which saddle-mounting faces directed substantially transversely with respect to the loading direction are formed for the concrete. These projecting portions are formed by hook-shaped bends which are at the same time intended to grip round reinforcement bars or secondary reinforcement bars. As a result of this shape, the flat steel concrete anchors are dependent, with respect to their position, on the direction of the secondary reinforcement bar, which can lead to problems in particular with very narrow concrete parts. The flat steel concrete anchor is to be provided in the anchoring region of the flat steel with an opening (5), beside which run lateral webs (6, 7) which are arched in opposite directions out of the plane of the flat steel by deformation. As a result of this shape, the opening is to have, in addition to the opening cross-section existing orthogonally to the flat steel plane, also an opening cross-section parallel to the flat steel plane. <IMAGE>

Description

Die Erfindung bezieht sich auf einen Flachstahlbetonanker für Betonfertigteile der im Oberbegriff des Anspruchs 1 angegebenen Gattung.The invention relates to a flat steel concrete anchor for precast concrete of the type specified in the preamble of claim 1.

Ein derartiger Flachstahlbetonanker ist beispielsweise aus der DE-C 39 04 772 bekannt. Das Flachstahlteil weist bei dieser Ausführung im Verankerungsbereich mindestens zwei Abschnitte auf, die gegensinnig zu hakenförmigen Abbiegungen geformt sind und in Längsrichtung des einzulegenden Bewehrungsstabes gesehen eine im wesentlichen geschlossene Form bilden. Die bekannte Anordnung bietet zwar ausreichend große Aufsattelflächen für den Beton und auch eine gute Anbindung an den Bewehrungsstab, jedoch ist die Ausrichtung des Flachstahlbetonankers stets an die Richtung, in der der Bewehrungsstab bzw. das Zulageeisen verläuft, gebunden.Such a flat steel concrete anchor is known for example from DE-C 39 04 772. The flat steel part in this embodiment has at least two sections in the anchoring area, which are shaped in opposite directions to form hook-shaped bends and, seen in the longitudinal direction of the reinforcing bar to be inserted, form an essentially closed shape. Although the known arrangement offers sufficiently large saddle surfaces for the concrete and also a good connection to the reinforcing bar, the orientation of the flat steel concrete anchor is always tied to the direction in which the reinforcing bar or the additional iron runs.

Es ist die Aufgabe der vorliegenden Erfindung, einen Flachstahlbetonanker der gattungsgemäßen Art zu schaffen, der einfacher und billiger in der Herstellung ist. Darüber hinaus soll bei einer bevorzugten Ausführung der Anker nicht an die Richtung und die Lage von Bewehrungsstäben bzw. Zulageeisen gebunden sein.It is the object of the present invention to provide a flat steel concrete anchor of the generic type which is simpler and cheaper to manufacture. In addition, in a preferred embodiment, the anchor should not be tied to the direction and position of reinforcing bars or additional bars.

Diese Aufgabe wird bei einem gattungsgemäßen Flachstahlbetonanker durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst.This object is achieved in a generic flat steel concrete anchor by the characterizing features of claim 1.

Die wesentlichen Vorteile der Erfindung sind insbesondere darin zu sehen, daß der Flachstahlbetonanker in seinem Verankerungsbereich ein geschlossenes Krafteck bildet, das extrem hohen Beanspruchungen standhält. Darüber hinaus sind nur einfache Stanz- und Prägevorgänge durchzuführen, die eine präzise Serienherstellung mit einfachen Mitteln ermöglichen. Schließlich ist noch hervorzuheben, daß der erfindungsgemäße Flachstahlbetonanker mit oder ohne Zulageeisen verwendet werden kann, da die Aufsattelflächen innerhalb gewisser Grenzen auch die Verankerungskräfte übertragen können und daß die Anordnung des Flachstahlbetonankers in dem Betonteil völlig unabhängig von der Richtung der Zulageeisen ist, sofern diese für das Zusammenwirken mit dem Flachstahlbetonanker vorgesehen sind.The main advantages of the invention can be seen in particular in the fact that the flat steel concrete anchor forms a closed force corner in its anchoring area, which can withstand extremely high loads. In addition, only simple stamping and embossing processes can be carried out, which enable precise series production with simple means. Finally, it should be emphasized that the flat steel concrete anchor according to the invention can be used with or without additional iron, since the saddle surfaces can also transmit the anchoring forces within certain limits and that the arrangement of the flat steel concrete anchor in the concrete part is completely independent of the direction of the additional iron, provided that this is for the Interaction with the flat steel concrete anchor are provided.

Damit die Beanspruchung der Aufsattelflächen gleichmäßig ist und die Kräfte vom Flachstahlbetonanker in das Betonteil gleichmäßig übertragen werden, ist es von Vorteil, die seitlichen Stege symmetrisch aus der Flachstahlebene herauszuwölben. Die Öffnung im Verankerungsbereich wird vorzugsweise durch ein gestanztes Loch mit länglicher Form gebildet, dessen längere Erstreckung in Richtung der Längsachse des Flachstahls verläuft. Durch die längliche Form der Öffnung ergibt sich eine entsprechende Länge der Stege, so daß eine Wölbung der Stege ohne zu starke Zugspannung im Material möglich ist.So that the stress on the saddle surfaces is uniform and the forces are evenly transmitted from the flat steel concrete anchor to the concrete part, it is advantageous to arch the side webs symmetrically out of the flat steel plane. The opening in the anchoring area is preferably formed by a punched hole with an elongated shape, the longer extension of which extends in the direction of the longitudinal axis of the flat steel. The elongated shape of the opening results in a corresponding length of the webs, so that the webs can be curved without excessive tensile stress in the material.

Um sicherzustellen, daß bei entsprechender Belastung eine gesicherte Lastaufnahme innerhalb des Verankerungsbereichs gewährleistet ist, wird gemäß einer weiteren Ausgestaltung des Erfindungsgegenstandes vorgeschlagen, daß der Abstand der Öffnung im Verankerungsbereich von dem Ende des Flachstahls mindestens der Strecke entspricht, welche die Öffnung für das Hebezeug vom Ende des Anschlußbereichs entfernt liegt. Außerdem sollte der Abstand der im Verankerungsbereich angeordneten Öffnung vom Ende des Flachstahls größer sein als die Breite jedes der seitlich der Öffnung angeordneten Stege.In order to ensure that a secure load pick-up is guaranteed within the anchoring area under a corresponding load, it is proposed according to a further embodiment of the subject matter that the distance of the opening in the anchoring area from the end of the flat steel corresponds at least to the distance that the opening for the hoist from the end the connection area is distant. In addition, the distance of the opening arranged in the anchoring area from the end of the flat steel should be greater than the width of each of the webs arranged on the side of the opening.

Durch die in Anspruch 1 angegebene Form der Öffnung im Verankerungsbereich ist das Durchführen eines oder mehrerer Zulageeisen in beliebiger Richtung möglich. Damit der Flachstahlbetonanker bereits vor dem Einbetten in den Beton sicher an einem in der Ebene des Flachstahlbetonankers, jedoch quer zu diesem verlaufenden Zulageeisen gehalten wird, sollte die Öffnung in dieser Richtung einen entsprechenden Querschnitt besitzen, durch den der Flachstahl das Zulageeisen formschlüssig umgibt. Um diese Form zu erreichen, wird es als besonders geeignet angesehen, daß der Öffnungsquerschnitt in der Parallelen zur Flachstahlebene eine Weite besitzt, die mindestens annähernd der Dicke des Flachstahls entspricht. Damit mehrere Zulageeisen leicht durch eine gemeinsame Öffnung im Verankerungsbereich führbar sind, wird vorgeschlagen, daß das Langloch eine kürzere Erstreckung quer zur Längsachse besitzt, die mindestens das 0,3-fache und maximal das 0,6-fache, vorzugsweise etwa das 0,35-fache bis 0,5-fache der längeren Erstreckung beträgt. Dabei wird davon ausgegangen, daß diese kürzere Erstreckung des Langlochs bzw. der Öffnung nicht viel größer ist als der Durchmesser des Zulageeisens.Due to the shape of the opening in the anchoring area specified in claim 1, it is possible to carry out one or more supplementary irons in any direction. So that the flat steel concrete anchor is held securely on an additional iron running in the plane of the flat steel concrete anchor, but transversely to this, even before it is embedded in the concrete, the opening in this direction should have a corresponding cross-section through which the flat steel surrounds the additional iron in a form-fitting manner. In order to achieve this shape, it is considered particularly suitable that the opening cross section in the parallel to the flat steel plane has a width which corresponds at least approximately to the thickness of the flat steel. So that several allowance irons can be easily guided through a common opening in the anchoring area, it is proposed that the elongated hole have a shorter extension transverse to the longitudinal axis, which is at least 0.3 times and at most 0.6 times, preferably approximately 0.35 -fold to 0.5 times the longer extension. It is assumed that this shorter extension of the elongated hole or opening is not much larger than the diameter of the additional iron.

Die Form der Öffnung im Verankerungsbereich kann, in der Draufsicht auf den Flachstahl gesehen, die eines Ovals oder einer Ellipse sein. Als besonders geeignet wird vorgeschlagen, daß die Öffnung, in der Draufsicht auf den Flachstahl gesehen, die Form eines Langlochs mit parallelen Seitenrändern und halbkreisförmigen Endabschnitten besitzt.The shape of the opening in the anchoring area can be that of an oval or an ellipse, seen in the top view of the flat steel. It is proposed as particularly suitable that the opening, viewed in plan view of the flat steel, has the shape of an elongated hole with parallel side edges and semicircular end sections.

Ausführungsbeispiele des erfindungsgemäßen Flachstahlbetonankers sind nachstehend anhand der Zeichnung näher erläutert. Es zeigen

Fig. 1
eine perspektivische Ansicht des Flachstahlbetonankers,
Fig. 2
eine Seitenansicht des Flachstahlbetonankers,
Fig. 3a und 3b
jeweils die Draufsicht auf einen Flachstahlbetonanker mit unterschiedlicher Öffnung im Verankerungsbereich,
Fig. 4
einen Flachstahlbetonanker gemäß Fig. 1 mit einem durch die Öffnung geführten Zulageeisen,
Fig. 5
einen Flachstahlbetonanker mit zwei gekreuzt angeordneten Zulageeisen,
Fig. 6
einen Flachstahlbetonanker mit drei in verschiedenen Raumebenen angeordneten Zulageeisen und
Fig. 7
einen Ausschnitt eines Betonrohres mit eingegossenem Flachstahlbetonanker.
Exemplary embodiments of the flat steel concrete anchor according to the invention are explained in more detail below with reference to the drawing. Show it
Fig. 1
a perspective view of the flat steel concrete anchor,
Fig. 2
a side view of the flat steel concrete anchor,
3a and 3b
each the top view of a flat steel concrete anchor with different opening in the anchoring area,
Fig. 4
1 with a supplementary iron guided through the opening,
Fig. 5
a flat steel concrete anchor with two crossed iron bars,
Fig. 6
a flat steel concrete anchor with three additional iron arranged in different room levels and
Fig. 7
a section of a concrete pipe with cast-in flat steel concrete anchor.

Der in Fig. 1 gezeigte Flachstahlbetonanker 1 besitzt einen Anschlußbereich 2 mit einer Öffnung 3 zum Einhängen eines - in der Zeichnung nicht dargestellten - Hebezeuges und einem Verankerungsbereich 4, der beispielsweise in ein Betonfertigteil eingebettet wird. Der Verankerungsbereich 4 weist eine Öffnung 5 auf, neben der seitliche Stege 6 und 7 vorhanden sind. Diese Stege 6 und 7 verlaufen parallel zu einer Längsmittelachse 8. Sie sind jedoch aus der Ebene des Flachstahls herausgewölbt, und zwar gegensinnig, d.h. bezogen auf die Flachstahlebene ist der Steg 6 nach unten und der Steg 7 nach oben gewölbt. Durch diese Wölbung der Stege 6 und 7 wird erreicht, daß die Öffnung 5 zusätzlich zum Öffnungsquerschnitt, der orthogonal zur Flachstahlebene vorhanden ist, auch einen Öffnungsquerschnitt in einer Parallelen zur Flachstahlebene besitzt. Außerdem werden durch die Wölbungen der Stege 6 und 7 Aufsattelflächen 9 und 10 für den Beton gebildet, die zu beiden Seiten der Längsmittelachse 8 symmetrisch angeordnet sind und damit zu einer gleichmäßigen Kraftverteilung bei Belastung führen.The flat steel concrete anchor 1 shown in Fig. 1 has a connection area 2 with an opening 3 for hanging a - not shown in the drawing - hoist and an anchoring area 4, which is embedded, for example, in a precast concrete part. The anchoring area 4 has an opening 5, in addition to which lateral webs 6 and 7 are present. These webs 6 and 7 run parallel to a longitudinal central axis 8. However, they are arched out of the plane of the flat steel, in opposite directions, i.e. in relation to the flat steel plane, the web 6 is curved downwards and the web 7 is curved upwards. This curvature of the webs 6 and 7 ensures that the opening 5 also has an opening cross section parallel to the flat steel plane in addition to the opening cross section which is present orthogonally to the flat steel plane. In addition, saddle surfaces 9 and 10 for the concrete are formed by the curvatures of the webs 6 and 7, which are arranged symmetrically on both sides of the longitudinal central axis 8 and thus lead to a uniform force distribution under load.

Fig. 2 zeigt die Seitenansicht des Flachstahlbetonankers 1 mit seinem Anschlußbereich 2, dem Verankerungsbereich 4 sowie den Öffnungen 3 und 5. Aus dieser Seitenansicht ist die gegensinnig gewölbte Form der Stege 6 und 7 mit ihren Aufsattelflächen 9 und 10 ersichtlich. Die Öffnung 5 hat in Richtung einer Parallelen zur Flachstahlebene einen Öffnungsquerschnitt mit einer lichten Weite W, die im Beispiel der Fig. 2 geringfügig größer ist als die Dicke D des Flachstahls. Dieser Öffnungsquerschnitt ermöglicht die Durchführung eines Zulageeisens oder Bewehrungsstabes mindestens annähernd parallel zur Ebene des Flachstahls.Fig. 2 shows the side view of the flat steel concrete anchor 1 with its connection area 2, the anchoring area 4 and the openings 3 and 5. From this side view, the oppositely curved shape of the webs 6 and 7 with their saddle surfaces 9 and 10 can be seen. In the direction parallel to the flat steel plane, the opening 5 has an opening cross section with a clear width W, which in the example in FIG. 2 is slightly larger than the thickness D of the flat steel. This opening cross-section enables an additional iron or reinforcing bar to be carried out at least approximately parallel to the flat steel plane.

In Fig. 3a und 3b ist jeweils eine Draufsicht auf den Flachstahlbetonanker 1 gezeigt, wobei der Flachstahlbetonanker in Fig. 3a eine als Langloch mit zwei parallelen Seitenkanten 11 und endseitigen Halbkreisen 12 ausgebildete Öffnungen 5' und derjenige in Fig. 3b eine ovale Öffnung 5'' besitzt. Im Anschlußbereich 2 ist die Öffnung 3 zum Einhängen eines Hakens oder dgl. vorgesehen, die in einer Strecke S vom Ende des Flachstahls angeordnet ist. Die Öffnung 5' bzw. 5'' besitzt eine längere Achse L, die sich in Längsrichtung des Flachstahlbetonankers 1 erstreckt und eine kürzere Achse 1, die quer zur Achse L verläuft. Die Erstrekkung der kürzeren Achse 1 beträgt in Fig. 3a das 0,35-fache der längeren Achse L. Dagegen beträgt die kürzere Achse 1 in Fig. 3b das 0,5-fache der längeren Achse L. Die Breite der Stege 6 und 7 ist mit B bezeichnet. Der Abstand A der Öffnung 5' bzw. 5'' vom Ende des Verankerungsbereichs 4 soll mindestens der Strecke S entsprechen. Im Ausführungsbeispiel ist der Abstand A geringfügig größer als die Strecke S.3a and 3b each show a top view of the flat steel concrete anchor 1, the flat steel concrete anchor in FIG. 3a having an opening 5 'designed as an elongated hole with two parallel side edges 11 and end semicircles 12 and that in FIG. 3b an oval opening 5' 'owns. In the connection area 2, the opening 3 for hanging a hook or the like is provided, which is arranged in a distance S from the end of the flat steel. The opening 5 ′ or 5 ″ has a longer axis L which extends in the longitudinal direction of the flat steel concrete anchor 1 and a shorter axis 1 which runs transversely to the axis L. The extension of the shorter axis 1 in FIG. 3a is 0.35 times the longer axis L. In contrast, the shorter axis 1 in FIG. 3b is 0.5 times the longer axis L. The width of the webs 6 and 7 is labeled B. The distance A of the opening 5 'or 5' 'from the end of the anchoring area 4 should correspond at least to the distance S. In the exemplary embodiment, the distance A is slightly larger than the distance S.

Die Fig. 4 zeigt einen Flachstahlbetonanker 1 in perspektivischer Ansicht wie in Fig. 1, jedoch mit einem durch die Öffnung 5 geführten gebogenen Zulageeisen 13. Im übrigen stimmen die Bezugszeichen in Fig. 4 für gleiche Teile mit denjenigen in Fig. 1 überein.FIG. 4 shows a flat steel concrete anchor 1 in a perspective view as in FIG. 1, but with a bent additional iron 13 led through the opening 5. Otherwise, the reference symbols in FIG. 4 correspond to those in FIG. 1 for identical parts.

In Fig. 5 ist ein solcher Flachstahlbetonanker 1 mit zwei gestreckten Zulageeisen 14 und 15, die durch die Öffnung 5 verlaufen, gezeigt. Das Zulageeisen 14 verläuft dabei orthogonal zur Ebene des Flachstahls und das Zulageeisen 15 in der Flachstahlebene, wobei das Zulageeisen 15 jeweils in den Wölbungen der Stege 6 und 7 liegt. Durch die gekreuzt angeordneten Zulageeisen 14 und 15 ist der Flachstahlbetonanker 1 bereits vor dem Einbetten im Beton sicher positioniert, so daß eine zusätzliche Sicherung der Lage nicht erforderlich ist.5 shows such a flat steel concrete anchor 1 with two elongated supplementary irons 14 and 15 which run through the opening 5. The allowance iron 14 extends orthogonally to the plane of the flat steel and the allowance iron 15 in the flat steel plane, the allowance iron 15 lying in the curvatures of the webs 6 and 7, respectively. Crossed by the arranged additional iron 14 and 15, the flat steel concrete anchor 1 is already securely positioned before embedding in the concrete, so that additional securing of the position is not required.

Schließlich ist in einem weiteren Ausführungsbeispiel gemäß Fig. 6 noch die Möglichkeit beschrieben, ein drittes Zulageeisen 16 vorzusehen, wodurch eine noch günstigere Kraftverteilung innerhalb des Betonfertigteils bei dessen Anheben durch ein Hebezeug erreicht wird.Finally, in a further exemplary embodiment according to FIG. 6, the possibility is also described of providing a third additional iron 16, as a result of which an even more favorable force distribution within the precast concrete part is achieved when it is lifted by a lifting device.

In Fig. 7 ist ein Schnitt durch einen Ausschnitt eines Betonrohres 17 mit eingebettetem Flachstahlbetonanker 1 gezeigt. Der Anschlußbereich 2 ragt in eine halbkugelartige Vertiefung 18 an der Oberfläche des Betonrohres 17, so daß die Öffnung 3 im Anschlußbereich 2 gut zugänglich ist. Der Verankerungsbereich 4 ist in das Betonrohr eingebettet und zwei Zulageeisen 19 und 20 verlaufen durch die Öffnung 5 im Verankerungsbereich 4. Dabei ist das Zulageeisen 19 in der Ebene des Flachstahls angeordnet und das Zulageeisen 20 verläuft bogenförmig entsprechend der Krümmung des Betonrohres 17 und tritt somit etwa im rechten Winkel zur Flachstahlebene durch die Öffnung 5.7 shows a section through a section of a concrete pipe 17 with an embedded flat steel concrete anchor 1. The connection area 2 protrudes into a hemispherical depression 18 on the surface of the concrete pipe 17, so that the opening 3 in the connection area 2 is easily accessible. The anchoring area 4 is embedded in the concrete pipe and two additional iron 19 and 20 run through the opening 5 in the anchoring area 4. The additional iron 19 is arranged in the plane of the flat steel and the additional iron 20 runs in an arc shape corresponding to the curvature of the concrete pipe 17 and thus occurs approximately at right angles to the flat steel plane through opening 5.

Claims (9)

Flachstahlbetonanker für Betonfertigteile mit einem nahe der Oberfläche des Betonfertigteils liegenden Anschlußbereich mit einer Öffnung für ein Hebezeug und einem tiefer im Betonfertigteil liegenden Verankerungsbereich, der an mindestens einer Stelle aus der Ebene des Flachstahls hervorstehende Abschnitte aufweist, durch die im wesentlichen quer zur Beanspruchungsrichtung gerichtete Aufsattelflächen für den Beton gebildet sind, dadurch gekennzeichnet, daß im Verankerungsbereich (4) des Flachstahls eine Öffnung (5, 5', 5'') vorhanden ist, neben der seitliche Stege (6, 7) verlaufen, die durch Verformung gegensinnig aus der Ebene des Flachstahls gewölbt sind, so daß die Öffnung (5, 5', 5'') zusätzlich zum orthogonal zur Flachstahlebene vorhandenen Öffnungsquerschnitt auch einen Öffnungsquerschnitt in einer Parallelen zur Flachstahlebene besitzt.Flat steel concrete anchors for precast concrete parts with a connection area lying near the surface of the precast concrete part with an opening for a hoist and an anchoring area lying deeper in the precast concrete part, which has at least one point protruding from the plane of the flat steel, through the saddle surfaces directed essentially transversely to the direction of stress the concrete are formed, characterized in that in the anchoring area (4) of the flat steel there is an opening (5, 5 ', 5' '), next to the lateral webs (6, 7), which move in opposite directions from the plane of the Flat steel are arched so that the opening (5, 5 ', 5' ') also has an opening cross-section parallel to the flat steel plane in addition to the opening cross section orthogonal to the flat steel plane. Flachstahlbetonanker nach Anspruch 1,
dadurch gekennzeichnet, daß die seitlichen Stege (6, 7) symmetrisch aus der Flachstahlebene herausgewölbt sind.Flat steel concrete anchor according to claim 1,
characterized in that the lateral webs (6, 7) are arched symmetrically out of the flat steel plane. Flachstahlbetonanker nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß die Öffnung (5, 5', 5'') im Verankerungsbereich (4) ein gestanztes Loch mit länglicher Form ist, dessen längere Erstreckung (L) in Richtung der Längsachse (8) des Flachstahls verläuft.Flat steel concrete anchor according to claim 1 or 2,
characterized in that the opening (5, 5 ', 5'') in the anchoring area (4) is a punched hole with an elongated shape, the longer extension (L) of which extends in the direction of the longitudinal axis (8) of the flat steel. Flachstahlbetonanker nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß der Abstand (A) der Öffnung (5', 5'') vom Ende des Flachstahls mindestens der Strecke (S), die die Öffnung (3) für das Hebezeug vom Ende des Anschlußbereichs (2) entfernt liegt, entspricht.Flat steel concrete anchor according to one of the preceding claims,
characterized in that the distance (A) of the opening (5 ', 5'') from the end of the flat steel corresponds at least to the distance (S) which the opening (3) for the hoist is from the end of the connection area (2) . Flachstahlbetonanker nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, daß der Abstand (A) der Öffnung (5', 5'') vom Ende des Flachstahls größer ist als die Breite (B) der Stege (6, 7) seitlich der Öffnung (5', 5'').Flat steel concrete anchor according to one of claims 1 to 4,
characterized in that the distance (A) of the opening (5 ', 5'') from the end of the flat steel is greater than the width (B) of the webs (6, 7) to the side of the opening (5', 5 ''). Flachstahlbetonanker nach einem der Ansprüche 3 bis 5,
dadurch gekennzeichnet, daß das Langloch (5', 5'') eine kürzere Erstreckung (1) quer zur Längsachse (8) besitzt, die mindestens das 0,3-fache und maximal das 0,6-fache, vorzugsweise etwa das 0,35-fache bis 0,5-fache, der längeren Erstreckung (L) beträgt.Flat steel concrete anchor according to one of claims 3 to 5,
characterized in that the elongated hole (5 ', 5'') has a shorter extension (1) transverse to the longitudinal axis (8) which is at least 0.3 times and at most 0.6 times, preferably approximately 0, 35 times to 0.5 times the longer extension (L). Flachstahlbetonanker nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß der Öffnungsquerschnitt in der Parallelen zur Flachstahlebene eine Weite (W) besitzt, die mindestens annähernd der Dicke (D) des Flachstahls entspricht.Flat steel concrete anchor according to one of the preceding claims,
characterized in that the opening cross section in the parallel to the flat steel plane has a width (W) which corresponds at least approximately to the thickness (D) of the flat steel. Flachstahlbetonanker nach einem der Ansprüche 3 bis 7,
dadurch gekennzeichnet, daß die Öffnung (5''), in der Draufsicht auf den Flachstahl gesehen, die Form einer Ellipse oder eines Ovals besitzt.Flat steel concrete anchor according to one of claims 3 to 7,
characterized in that the opening (5 ''), when viewed in plan view of the flat steel, has the shape of an ellipse or an oval. Flachstahlbetonanker nach einem der Ansprüche 3 bis 7,
dadurch gekennzeichnet, daß die Öffnung (5'), in der Draufsicht auf den Flachstahl gesehen, die Form eines Langlochs mit parallelen Seitenrändern (11) und halbkreisförmigen Endabschnitten (12) besitzt.Flat steel concrete anchor according to one of claims 3 to 7,
characterized in that the opening (5 '), viewed in plan view of the flat steel, has the shape of an elongated hole with parallel side edges (11) and semicircular end sections (12).
EP92102649A 1991-02-21 1992-02-18 Flat steel concrete anchor for precast concrete parts Expired - Lifetime EP0500029B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4105337 1991-02-21
DE4105337A DE4105337A1 (en) 1991-02-21 1991-02-21 Flat steel concrete anchors for precast concrete parts

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EP0500029A2 true EP0500029A2 (en) 1992-08-26
EP0500029A3 EP0500029A3 (en) 1992-09-23
EP0500029B1 EP0500029B1 (en) 1994-11-30

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EP92102649A Expired - Lifetime EP0500029B1 (en) 1991-02-21 1992-02-18 Flat steel concrete anchor for precast concrete parts

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US (1) US5177928A (en)
EP (1) EP0500029B1 (en)
JP (1) JP3088818B2 (en)
AT (1) ATE114770T1 (en)
CA (1) CA2061598C (en)
DE (2) DE4105337A1 (en)
DK (1) DK0500029T3 (en)
ES (1) ES2067963T3 (en)

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AU752353B2 (en) * 1999-04-20 2002-09-19 Hilbert Superannuation Management Pty Ltd Lifting system
FR2897627A1 (en) * 2006-02-21 2007-08-24 Jacques Gauvrit Load anchor for use in e.g. slab, has L shaped vertical branch for providing ring, and L shaped horizontal branch with hook and lug for locking horizontal branch with armature of armed concrete plate
CN101939245B (en) * 2008-02-08 2014-06-25 马塞勒·阿尔提翁 Anchor for supporting construction elements on supported diverging branches

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DE29509260U1 (en) * 1995-06-06 1995-08-24 Fixinox Gesellschaft zur Entwicklung rationeller Montage- und Befestigungssysteme mbH, 67346 Speyer Transport element
DE29708469U1 (en) * 1997-05-13 1997-07-17 Fixinox Gesellschaft zur Entwicklung rationeller Befestigungs- und Montagesysteme mbH, 67346 Speyer Transport element
DE29800905U1 (en) * 1998-01-20 1999-05-27 Ytong AG, 80797 München Transport anchor for reinforced concrete elements
US7032354B2 (en) * 2001-12-19 2006-04-25 Universal Form Clamp Co., Inc. Sandwich erection lift anchor with welding plate assembly
US6647674B1 (en) * 2002-05-08 2003-11-18 Dayton Superior Corporation Erection anchor for concrete panel
US7111432B2 (en) * 2003-02-19 2006-09-26 Universal Form Clamp Of Chicago, Inc. Passthrough concrete anchor
US20050044811A1 (en) * 2003-08-27 2005-03-03 Universal Form Clamp Co., Inc. Ring lift anchor
US20050055958A1 (en) * 2003-08-27 2005-03-17 Universal Form Clamp Co., Inc. W foot anchor
US7065925B2 (en) * 2004-02-11 2006-06-27 Universal Form Clamp Of Chicago, Inc. Concrete anchor
US20060137286A1 (en) * 2004-12-21 2006-06-29 David Zartman Anchor for structural joints
US20060248811A1 (en) * 2005-05-04 2006-11-09 Universal Form Clamp Co., Inc. Anchor positioning assembly
DE102008048425A1 (en) * 2008-09-23 2010-04-01 B.T. Innovation Gmbh spacer
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US9297163B2 (en) * 2013-09-15 2016-03-29 BFRE Pty Ltd. Dual mesh level reinforcement bar support chair assembly
US9617746B1 (en) * 2014-01-14 2017-04-11 Maestro International, Llc Forged lift anchor for precast portland cement concrete shapes
CA3015176C (en) * 2017-08-23 2023-07-04 Midwest Concrete & Masonry Supply, Inc. Lifting anchor assembly for precast concrete structures
USD1009583S1 (en) * 2022-06-06 2024-01-02 ALP Supply, Inc. Fish tail lift anchor for precast concrete

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FR2897627A1 (en) * 2006-02-21 2007-08-24 Jacques Gauvrit Load anchor for use in e.g. slab, has L shaped vertical branch for providing ring, and L shaped horizontal branch with hook and lug for locking horizontal branch with armature of armed concrete plate
CN101939245B (en) * 2008-02-08 2014-06-25 马塞勒·阿尔提翁 Anchor for supporting construction elements on supported diverging branches

Also Published As

Publication number Publication date
CA2061598A1 (en) 1992-08-22
DE4105337A1 (en) 1992-08-27
DK0500029T3 (en) 1995-05-15
DE59200818D1 (en) 1995-01-12
JP3088818B2 (en) 2000-09-18
ATE114770T1 (en) 1994-12-15
CA2061598C (en) 2002-12-24
US5177928A (en) 1993-01-12
EP0500029A3 (en) 1992-09-23
EP0500029B1 (en) 1994-11-30
ES2067963T3 (en) 1995-04-01
JPH0558584A (en) 1993-03-09

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