EP0500029B1 - Flat steel concrete anchor for precast concrete parts - Google Patents
Flat steel concrete anchor for precast concrete parts Download PDFInfo
- Publication number
- EP0500029B1 EP0500029B1 EP92102649A EP92102649A EP0500029B1 EP 0500029 B1 EP0500029 B1 EP 0500029B1 EP 92102649 A EP92102649 A EP 92102649A EP 92102649 A EP92102649 A EP 92102649A EP 0500029 B1 EP0500029 B1 EP 0500029B1
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- EP
- European Patent Office
- Prior art keywords
- flat steel
- opening
- plane
- concrete anchor
- concrete
- 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.)
- Expired - Lifetime
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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 additional iron in any direction. So that the flat steel concrete anchor is securely held 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 transversely 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 there are lateral webs 6 and 7. 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 'formed 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. 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 runs 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 extend 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 a right angle to the flat steel plane through opening 5.
Abstract
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
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
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 load on the saddle surfaces is even 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 level. 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, with a corresponding load, a secure load pick-up is guaranteed within the anchoring area, 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
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 3 b
- 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.
- 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
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
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 Erstreckung 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
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
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
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
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
Claims (9)
- Flat steel concrete anchor (1) for precast concrete parts with a connection region (2) lying close to the surface of the precast concrete part with an opening (3) for a lifting tool and an anchoring region (4) lying deeper in the precast concrete part, which at at least one point comprises sections projecting from the plane of the flat steel, by which saddle surfaces (9, 10) for the concrete, directed substantially transversely to the direction of stress, are formed, characterised in that provided in the anchoring region (4) of the flat steel is an opening (5, 5', 5''), beside which lateral webs (6, 7) extend, which are curved due to deformation in opposite directions from the plane of the flat steel, so that in addition to the opening cross-section orthogonal to the flat steel plane, the opening (5, 5', 5'') also has an opening cross-section in a line parallel to the flat steel plane.
- Flat steel concrete anchor according to Claim 1, characterised in that the lateral webs (6, 7) are curved symmetrically out of the flat steel plane.
- Flat steel concrete anchor according to Claim 1 or 2, characterised in that the opening (5, 5', 5'') in the anchoring region (4) is a punched hole with an elongated shape, the longitudinal extent (L) of which runs in the direction of the longitudinal axis (8) of the flat steel.
- Flat steel concrete anchor according to one of the preceding Claims, characterised in that the distance (A) of the opening (5', 5'') in the anchoring region from the end of the flat steel corresponds at least to the distance (S) of the opening (3) for the lifting tool from the end of the connection region (2).
- Flat steel concrete anchor according to one of Claims 1 to 4, characterised in that the distance (A) of the opening (5', 5'') in the anchoring region from the end of the flat steel is greater than the width (B) of the webs (6, 7) at the side of the opening (5', 5'') in the anchoring region.
- Flat steel concrete anchor according to one of Claims 3 to 5, characterised in that the slot (5', 5'') has a shorter extent (1) transversely with respect to the longitudinal axis (8), which amounts to at least 0.3 times and at maximum 0.6 times, preferably approximately 0.35 times to 0.5 times the longer extent (L).
- Flat steel concrete anchor according to one of the preceding Claims, characterised in that the opening cross-section in the line parallel to the flat steel plane has a width (W) which corresponds at least approximately to the thickness (D) of the flat steel.
- Flat steel concrete anchor according to one of Claims 3 to 7, characterised in that the opening (5'') in the anchoring region, seen in plan view towards the flat steel, has the shape of an ellipse or an oval.
- Flat steel concrete anchor according to one of Claims 3 to 7, characterised in that the opening (5') in the anchoring region, seen in plan view towards the flat steel, has the shape of a slot with parallel side edges (11) and semi-circular end sections (12).
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 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0500029A2 EP0500029A2 (en) | 1992-08-26 |
| EP0500029A3 EP0500029A3 (en) | 1992-09-23 |
| EP0500029B1 true EP0500029B1 (en) | 1994-11-30 |
Family
ID=6425514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92102649A Expired - Lifetime EP0500029B1 (en) | 1991-02-21 | 1992-02-18 | Flat steel concrete anchor for precast concrete parts |
Country Status (8)
| Country | Link |
|---|---|
| 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) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29509260U1 (en) * | 1995-06-06 | 1995-08-24 | Fixinox Ges Zur Entwicklung Ra | Transport element |
| DE29708469U1 (en) * | 1997-05-13 | 1997-07-17 | Fixinox Ges Zur Entwicklung Ra | Transport element |
| DE29800905U1 (en) * | 1998-01-20 | 1999-05-27 | Ytong Ag | Transport anchor for reinforced concrete elements |
| AU752353B2 (en) * | 1999-04-20 | 2002-09-19 | Hilbert Superannuation Management Pty Ltd | Lifting system |
| 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 |
| FR2897627B1 (en) * | 2006-02-21 | 2008-04-18 | Jacques Gauvrit | STACKING ANCHOR FOR EQUIPPING A PLATE OF CONCRETE |
| EP2088112A1 (en) * | 2008-02-08 | 2009-08-12 | Marcel Arteon | Anchor for supporting construction elements on supported diverging branches |
| DE102008048425A1 (en) * | 2008-09-23 | 2010-04-01 | B.T. Innovation Gmbh | spacer |
| US8839580B2 (en) * | 2011-05-11 | 2014-09-23 | Composite Technologies Corporation | Load transfer device |
| 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 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1667532A (en) * | 1926-10-01 | 1928-04-24 | Rockwood Sprinkler Co Massachusetts | Concrete hanger block |
| US1917529A (en) * | 1931-08-19 | 1933-07-11 | Universal Form Clamp Co | Individual bar chair |
| US2291157A (en) * | 1939-07-03 | 1942-07-28 | Superior Concrete Accessories | Combined bar support and spacer |
| FR2054723A5 (en) * | 1969-07-24 | 1971-05-07 | Loire Atel Forges | |
| US3623289A (en) * | 1969-11-12 | 1971-11-30 | John L Lowery | Flexible spacing device for concrete reinforcing materials |
| US3673753A (en) * | 1970-03-20 | 1972-07-04 | George C Anderson | Support device for concrete reinforcing bars |
| US3788025A (en) * | 1972-05-17 | 1974-01-29 | S Holmes | Chair support for reinforcing rods |
| US4580378A (en) * | 1984-03-26 | 1986-04-08 | The Burke Company | Anchor assembly for tilt-up wall section |
| US4831803A (en) * | 1986-10-23 | 1989-05-23 | Nicola Leonardis | Foundation form work |
| US4835933A (en) * | 1988-02-11 | 1989-06-06 | Yung Fernand P | Rebar spacer assembly |
| DE3904772C1 (en) * | 1989-02-17 | 1990-06-13 | Unistrut Europe Plc, Bedford, Gb |
-
1991
- 1991-02-21 DE DE4105337A patent/DE4105337A1/en not_active Withdrawn
-
1992
- 1992-02-18 AT AT92102649T patent/ATE114770T1/en not_active IP Right Cessation
- 1992-02-18 ES ES92102649T patent/ES2067963T3/en not_active Expired - Lifetime
- 1992-02-18 DE DE59200818T patent/DE59200818D1/en not_active Expired - Fee Related
- 1992-02-18 DK DK92102649.8T patent/DK0500029T3/en active
- 1992-02-18 EP EP92102649A patent/EP0500029B1/en not_active Expired - Lifetime
- 1992-02-19 US US07/839,571 patent/US5177928A/en not_active Expired - Lifetime
- 1992-02-19 JP JP04032093A patent/JP3088818B2/en not_active Expired - Fee Related
- 1992-02-20 CA CA002061598A patent/CA2061598C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE59200818D1 (en) | 1995-01-12 |
| JP3088818B2 (en) | 2000-09-18 |
| ES2067963T3 (en) | 1995-04-01 |
| ATE114770T1 (en) | 1994-12-15 |
| JPH0558584A (en) | 1993-03-09 |
| CA2061598C (en) | 2002-12-24 |
| DK0500029T3 (en) | 1995-05-15 |
| EP0500029A3 (en) | 1992-09-23 |
| DE4105337A1 (en) | 1992-08-27 |
| US5177928A (en) | 1993-01-12 |
| EP0500029A2 (en) | 1992-08-26 |
| CA2061598A1 (en) | 1992-08-22 |
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