EP4030013A1 - Reinforcing element for increasing transverse force resistance - Google Patents
Reinforcing element for increasing transverse force resistance Download PDFInfo
- Publication number
- EP4030013A1 EP4030013A1 EP21217043.5A EP21217043A EP4030013A1 EP 4030013 A1 EP4030013 A1 EP 4030013A1 EP 21217043 A EP21217043 A EP 21217043A EP 4030013 A1 EP4030013 A1 EP 4030013A1
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- EP
- European Patent Office
- Prior art keywords
- leg
- rungs
- reinforcement element
- reinforcement
- chords
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- 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.)
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- 230000003014 reinforcing effect Effects 0.000 title 1
- 230000002787 reinforcement Effects 0.000 claims abstract description 59
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 description 5
- 239000011150 reinforced concrete Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 239000004567 concrete Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
- E04C5/0645—Shear reinforcements, e.g. shearheads for floor slabs
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
- E04C5/0604—Prismatic or cylindrical reinforcement cages composed of longitudinal bars and open or closed stirrup rods
- E04C5/0622—Open cages, e.g. connecting stirrup baskets
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/18—Spacers of metal or substantially of metal
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/20—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups of material other than metal or with only additional metal parts, e.g. concrete or plastics spacers with metal binding wires
- E04C5/205—Ladder or strip spacers
Definitions
- the invention relates to a reinforcement element for absorbing transverse forces, having a multiplicity of rungs and belts which connect the rungs to form an automatically standing shape of the reinforcement element.
- reinforcement stirrups are also used, which, however, have the disadvantage that they have to be guided around longitudinal reinforcements, which means that a considerable amount of work is required for threading the Reinforcement stirrup brings with it.
- Shear reinforcement elements become known, which are designed with the structural features of a reinforcement element of the type mentioned.
- the object of the invention is to specify a shear force reinforcement element that can be designed to adequately absorb shear forces in a reinforced concrete slab and is easier to handle on a construction site than the shear force brackets known from the prior art.
- the reinforcement element is designed in a U-shape in plan view of its automatically standing shape.
- Such a reinforcement element initially offers the advantage that it can be designed with the rungs and the straps connecting them in such a way that very good absorption of transverse forces in a reinforced concrete slab is possible.
- the reinforcement element can be handled very easily because it stands by itself.
- a reinforcement element according to the invention can be easily placed between two reinforcement layers and, after being placed on the lower or, in the case of walls, outer reinforcement layers, also serves as a spacer for the upper ones or in the case of walls, inner reinforcement layers.
- the rungs provided can in principle run in any desired manner, but are advantageously arranged essentially vertically.
- the rungs can have a uniform length and in particular be of the same length.
- the rungs can also be viewed as cross wires.
- the rungs can in particular be arranged in such a way that their ends run in one plane or one plane at least on one side, preferably on both sides.
- the chords are arranged essentially horizontally.
- the straps can run approximately in the area of the first ends and/or second ends of the rungs. It is expedient that at least one belt runs approximately in the area of the first ends of the rungs and at least one second belt runs in the area of the second ends of the rungs or is arranged on the rungs in these areas.
- double belts can also be provided for this purpose, ie two belts in each case in the area of the first ends and two belts in each case in the area of the second ends.
- the rungs are designed so long and a distance within the double chords is dimensioned such that a distance between the double chords is many times greater than a distance between the chords of a double chord. This results in a stable design of the reinforcement element with good force absorption and dissipation.
- the rungs are usually cohesively connected to the belts, in particular by welding. This enables simple production of a reinforcement element, which can also be done by machine.
- the individual rungs are welded to the double chords lying in one plane.
- the ladder-shaped element then present in this way is then bent around a mandrel to form a U-shape, as a result of which the reinforcement element is produced.
- the rungs and the chords can each be formed from a steel, optionally also from the same steel.
- the steel quality depends on the respective application or requirements and high-quality stainless steels can be provided.
- the reinforcement element is advantageously shaped in such a way that the U-shaped configuration has a first leg and a second leg. It can be provided, in particular, that the first leg and the second leg have the same length and are connected by a section in the shape of a circular arc.
- a particularly high degree of symmetry is achieved by appropriate training.
- the two halves of the reinforcement element are then designed to be mirror-symmetrical to one another. This high level of symmetry in turn brings advantages when positioning the reinforcement element normal to a flat wall, since the individual rungs analog legs then each have the same distance to the wall, but also have the same distance between rungs of opposite legs of a reinforcement element.
- first leg and the second leg run straight in a plan view.
- first leg runs parallel to the second leg in a plan view.
- the individual rungs can be arranged at any spacing on the first leg and on the second leg and do not necessarily have to have a specific symmetry. However, it is preferred that the rungs on the individual legs each have the same distance from one another. This distance between individual rungs on the first leg can be the same as on the second leg. Rung spacings that deviate from this can be provided especially in the region of the arcuate section that connects the first leg to the second leg; However, no sprouts can be provided in this section in order to save material. In addition, it is also possible for a rung on the first leg to be associated with a rung on the second leg, so that the associated rungs lie in a plane running perpendicularly to the legs. The two legs are then designed identically.
- the rungs are usually arranged in such a way that their first ends lie in one plane and, given the same length of the rungs, this also applies to their second ends, which then lie in a parallel plane.
- the two legs are preferably arranged relatively close to one another.
- a radius of the circular arc or of the circular arc-shaped section is dimensioned in such a way that the legs are spaced apart from one another by no more than 15 cm, in particular less than 10 cm. This can be achieved if the arcuate section has a corresponding radius or, if it is designed as a semicircle, the diameter of the semicircle is dimensioned accordingly.
- a reinforcement element 1 according to the invention is shown in plan view.
- the reinforcement element 1 has a first leg 6 and a second leg 7 .
- the first leg 6 and the second leg 7 are connected to one another by a section 8 in the shape of a circular arc.
- the reinforcement element 1 thus consists of three sections, namely the first leg 6, the second leg 7 and the connecting, arc-shaped section 8.
- the first leg 6 and the second leg 7 run parallel to one another in plan view.
- the arcuate section 8 is formed with a relatively small radius, so that the first leg 6 and the second leg 7 are not too far apart from one another, in a manner to be explained below.
- the arcuate section 8 can be in the form of a semicircle with a diameter 10 which determines the distance between the legs 6 , 7 .
- the reinforcement element 1 is formed from a plurality of rungs 2, which preferably, as shown, have the same lengths and are basically identical in design.
- the rungs 2 are preferably made of steel.
- the rungs 2 are connected to at least one belt 3 at the head end or at a first end 4 .
- the rungs 2 are connected to at least one further belt 3 on the ground side or at a second end 5 .
- the individual straps 3 can in turn be made of steel, for example of the same steel as the rungs 2 .
- the straps 3 arranged on the head side and on the bottom side can basically be of identical design.
- double belts are provided both on the head side and on the bottom side.
- a distance between the double chords is significantly greater, preferably a multiple, for example more than two or three times, than a distance between the chords 3 of a double chord.
- the distances between the straps 3 of a double strap can be approximately the same on the head side and on the bottom side.
- a lower belt 3 can be arranged on the rungs 2 in such a way that it can come into contact with a floor.
- the rungs 2 of the first leg 6 are arranged as far as possible opposite the rungs 2 of the second leg 7, so that the rungs 2 lie in a plane 9 in a section transverse to the legs 6, 7 or their longitudinal axes, as is shown in an example in 3 is shown.
- the radius of the arcuate section 8 is preferably kept in such a way that a distance between the first leg 6 and the second leg 7 is less than four times the distance between the rungs 2 of a leg 6 , 7 .
- a correspondingly close arrangement of the legs 6, 7 to one another allows good force absorption or dissipation in a small space.
- the reinforcement element 1 can also simply be arranged parallel or normal to a wall or to a wall to be constructed, without special precautions being taken for the rungs 2 to be distributed as evenly as possible would have to. Rather, this can already be achieved by the mere filing of the reinforcement element 1, since this with appropriate symmetry is formed. This would not be possible with a V-shaped arrangement which, if at all feasible, would require a complex arrangement of various elements.
- the rungs 2 can run not only along the legs 6, 7, but also in the area of the arcuate section 8, although this could in principle also be designed without rungs.
- a corresponding design results from a preferred production variant, according to which rungs 2 lying in one plane are first welded to the double chords to form a ladder-shaped structure, after which the ladder-shaped structure is bent around a mandrel, for example, to form the reinforcement element 1 .
- Such a method can easily be automated mechanically and carried out in a simple manner if a rung 2 is also provided in the arcuate section 8 with the same spacing from other rungs 2 as in the other areas. Otherwise, this rung 2 would have to be removed, but then the saving in material is only small.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
Die Erfindung betrifft ein Bewehrungselement (1) zur Aufnahme von Querkräften, aufweisend eine Vielzahl von Sprossen (2) und Gurte (3), welche die Sprossen (2) unter Ausbildung einer selbsttätig stehenden Form des Bewehrungselementes (1) verbinden. Erfindungsgemäß ist vorgesehen, dass das Bewehrungselement (1) in Draufsicht auf dessen selbsttätig stehende Form u-förmig ausgebildet ist.The invention relates to a reinforcement element (1) for absorbing transverse forces, having a large number of rungs (2) and belts (3) which connect the rungs (2) to form an automatically standing shape of the reinforcement element (1). According to the invention, the reinforcement element (1) is U-shaped in plan view of its automatically standing shape.
Description
Die Erfindung betrifft ein Bewehrungselement zur Aufnahme von Querkräften, aufweisend eine Vielzahl von Sprossen und Gurte, welche die Sprossen unter Ausbildung einer selbsttätig stehenden Form des Bewehrungselementes verbinden.The invention relates to a reinforcement element for absorbing transverse forces, having a multiplicity of rungs and belts which connect the rungs to form an automatically standing shape of the reinforcement element.
Bei der Errichtung von Bauwerken, beispielsweise unter Einsatz von Stahlbetonplatten, sollte grundsätzlich vermieden werden, dass bei Wand-Decken-Anschlüssen zu hohe Querkräfte auftreten und eine Querkraftbewehrung erforderlich wird.When erecting buildings, for example using reinforced concrete slabs, it should always be avoided that excessive shear forces occur at wall-ceiling connections and that shear force reinforcement is required.
Sofern bei der Erstellung von Bauten im Bereich eines Anschlusses von Wänden an Stahlbetonplatten relativ hohe Querkräfte auftreten, sind geeignete Maßnahmen vorzusehen, sodass die auftretenden Kräfte aufgenommen werden können.If relatively high shear forces occur when constructing buildings in the area where walls connect to reinforced concrete slabs, suitable measures must be taken so that the forces that occur can be absorbed.
Im Stand der Technik werden zur Aufnahme entsprechender Querkräfte bzw. zur Bewehrung einer Stahlbetonplatte neben den bekannten flächigen Bewehrungselementen wie Bewehrungsmatten zusätzlich Bewehrungsbügel eingesetzt, welche allerdings mit dem Nachteil behaftet sind, dass diese um Längsbewehrungen herumgeführt werden müssen, was einen erheblichen Arbeitsaufwand für ein Einfädeln der Bewehrungsbügel mit sich bringt.In the prior art, to absorb corresponding transverse forces or to reinforce a reinforced concrete slab, in addition to the known flat reinforcement elements such as reinforcement mats, reinforcement stirrups are also used, which, however, have the disadvantage that they have to be guided around longitudinal reinforcements, which means that a considerable amount of work is required for threading the Reinforcement stirrup brings with it.
Für einen anderen Einsatzzweck, nämlich für Schubbewehrungen im Anschlussbereich an Stützen und Wandenden, sind aus der
Aufgabe der Erfindung ist es, ein Querkraftbewehrungselement anzugeben, welches sich zur ausreichenden Aufnahme von Querkräften in einer Stahlbetonplatte geeignet auslegen lässt und auf einer Baustelle eine einfachere Handhabbarkeit als die aus dem Stand der Technik bekannten Querkraftbügel erlaubt.The object of the invention is to specify a shear force reinforcement element that can be designed to adequately absorb shear forces in a reinforced concrete slab and is easier to handle on a construction site than the shear force brackets known from the prior art.
Diese Aufgabe wird gelöst, wenn bei einem Bewehrungselement der eingangs genannten Art das Bewehrungselement in Draufsicht auf dessen selbsttätig stehende Form u-förmig ausgebildet ist.This object is achieved if, in the case of a reinforcement element of the type mentioned at the outset, the reinforcement element is designed in a U-shape in plan view of its automatically standing shape.
Ein derartiges Bewehrungselement bietet zunächst den Vorteil, dass dieses mit den Sprossen und den diese verbindenden Gurten so ausgelegt werden kann, dass eine sehr gute Aufnahme von Querkräften in einer Stahlbetonplatte möglich ist. Darüber hinaus bietet sich der Vorteil, dass das Bewehrungselement sehr einfach hantiert werden kann, weil dieses selbsttätig steht. Im Gegensatz zu bislang verwendeten Bewehrungsbügeln, welche umständlich um Bewehrungslagen oder dergleichen geführt werden müssen, kann ein Bewehrungselement gemäß der Erfindung auf einfache Weise zwischen zwei Bewehrungslagen platziert werden und dient nach Auflegen auf den unteren bzw. bei Wänden äußeren Bewehrungslagen gleichzeitig als Distanzstück für die oberen bzw. bei Wänden inneren Bewehrungslagen.Such a reinforcement element initially offers the advantage that it can be designed with the rungs and the straps connecting them in such a way that very good absorption of transverse forces in a reinforced concrete slab is possible. In addition, there is the advantage that the reinforcement element can be handled very easily because it stands by itself. In contrast to the previously used reinforcement brackets, which have to be laboriously guided around reinforcement layers or the like, a reinforcement element according to the invention can be easily placed between two reinforcement layers and, after being placed on the lower or, in the case of walls, outer reinforcement layers, also serves as a spacer for the upper ones or in the case of walls, inner reinforcement layers.
Im Vergleich mit Durchstanzelementen gemäß dem Stand der Technik, welche wie erwähnt für andere Zwecke eingesetzt werden, ist zudem die u-förmige Ausbildung entscheidend. Bei v-förmigen Elementen kommt es bei einer parallel verlaufenden Anordnung eines solchen Elementes neben einer sich senkrecht erhebenden Wand automatisch dazu, dass einzelne Sprossen einen verschiedenen Abstand zur Wand aufweisen, sodass eine homogene Kraftaufnahme nicht ausreichend gewährleistet werden kann. Bei einer bevorzugten Anordnung normal zu einer Wand sind zwar die Sprossenabstände zur Wand konstant, allerdings ergeben sich unterschiedliche Abstände in Querrichtung von Sprossen einer Reihe. Darüber hinaus würden bei einer Verwendung v-förmiger Elemente unzureichend bewehrte Bereiche verbleiben, insbesondere an seitlichen Enden eines querkraftbewehrten Betonbauteils, oder diese nur umständlich zu füllen sein. Bei Bewehrungselementen mit in Draufsicht u-förmiger Ausbildung ist dies nicht der Fall, weil derartige Elemente parallel zu einer Wand bzw. einer durch eine Wand definierten Ebene ausgerichtet werden können.In comparison with punching shear elements according to the prior art, which, as mentioned, are used for other purposes, the U-shaped configuration is also crucial. In the case of v-shaped elements, if such an element is arranged parallel to a vertically rising wall, individual rungs will automatically be at different distances from the wall, so that homogeneous force absorption cannot be adequately guaranteed. In a preferred arrangement normal to a wall, the rung spacings from the wall are constant, but there are different spacings in the transverse direction of rungs in a row. In addition, if V-shaped elements were used, insufficiently reinforced areas would remain, in particular at the lateral ends of a concrete component reinforced with shear forces, or these would only be difficult to fill. This is not the case with reinforcement elements that are U-shaped in plan view, because such elements can be aligned parallel to a wall or a plane defined by a wall.
Die vorgesehenen Sprossen können grundsätzlich in beliebiger Weise verlaufen, sind aber mit Vorteil im Wesentlichen vertikal angeordnet. Dabei können die Sprossen eine einheitliche Länge aufweisen und insbesondere gleich lang sein. Die Sprossen können auch als Querdrähte angesehen werden. Die Sprossen können insbesondere so angeordnet sein, dass deren Enden zumindest an einer Seite, vorzugsweise an beiden Seiten, in einer bzw. jeweils einer Ebene verlaufen.The rungs provided can in principle run in any desired manner, but are advantageously arranged essentially vertically. The rungs can have a uniform length and in particular be of the same length. The rungs can also be viewed as cross wires. The rungs can in particular be arranged in such a way that their ends run in one plane or one plane at least on one side, preferably on both sides.
Für eine einfache Ausbildung des Bewehrungselementes sind die Gurte im Wesentlichen horizontal angeordnet. Dabei können die Gurte etwa im Bereich von ersten Enden und/oder zweiten Enden der Sprossen verlaufen. Zweckmäßig ist es, dass zumindest ein Gurt etwa im Bereich erster Enden der Sprossen und zumindest ein zweiter Gurt im Bereich zweiter Enden der Sprossen verläuft bzw. in diesen Bereichen an den Sprossen angeordnet ist. Insbesondere können hierfür auch Doppelgurte vorgesehen sein, also jeweils zwei Gurte im Bereich der ersten Enden und jeweils zwei Gurte im Bereich der zweiten Enden. Die Sprossen sind dabei so lang ausgebildet und ein Abstand innerhalb der Doppelgurte so bemessen, dass ein Abstand zwischen den Doppelgurten um ein Vielfaches größer ist als ein Abstand zwischen den Gurten eines Doppelgurtes. In dieser Weise ergibt sich eine stabile Ausbildung des Bewehrungselementes mit guter Kraftaufnahme bzw. -ableitung.For a simple design of the reinforcement element, the chords are arranged essentially horizontally. The straps can run approximately in the area of the first ends and/or second ends of the rungs. It is expedient that at least one belt runs approximately in the area of the first ends of the rungs and at least one second belt runs in the area of the second ends of the rungs or is arranged on the rungs in these areas. In particular, double belts can also be provided for this purpose, ie two belts in each case in the area of the first ends and two belts in each case in the area of the second ends. The rungs are designed so long and a distance within the double chords is dimensioned such that a distance between the double chords is many times greater than a distance between the chords of a double chord. This results in a stable design of the reinforcement element with good force absorption and dissipation.
Die Sprossen sind mit den Gurten üblicherweise stoffschlüssig verbunden, insbesondere durch Schweißen. Dies ermöglicht eine einfache Herstellung eines Bewehrungselementes, welche auch maschinell erfolgen kann. Die einzelnen Sprossen werden mit den Doppelgurten in einer Ebene liegend verschweißt. Das dann so vorliegende leiterförmige Element wird anschließend um einen Dorn herum zur Ausbildung einer u-Form gebogen, wodurch das Bewehrungselement erstellt ist.The rungs are usually cohesively connected to the belts, in particular by welding. This enables simple production of a reinforcement element, which can also be done by machine. The individual rungs are welded to the double chords lying in one plane. The ladder-shaped element then present in this way is then bent around a mandrel to form a U-shape, as a result of which the reinforcement element is produced.
Insbesondere im Hinblick auf eine Verschweißung sowie Werkstoffe für Bewehrungen können die Sprossen und die Gurte jeweils aus einem Stahl, gegebenenfalls auch aus demselben Stahl, gebildet sein. Die Stahlqualität richtet sich nach dem jeweiligen Einsatzzweck bzw. Anforderungen und es können nicht-rostende Stähle hoher Güte vorgesehen sein.In particular with regard to welding and materials for reinforcements, the rungs and the chords can each be formed from a steel, optionally also from the same steel. The steel quality depends on the respective application or requirements and high-quality stainless steels can be provided.
Mit Vorteil ist das Bewehrungselement so geformt, dass die u-förmige Ausbildung einen ersten Schenkel und einen zweiten Schenkel aufweist. Dabei kann insbesondere vorgesehen sein, dass der erste Schenkel und der zweite Schenkel eine gleiche Länge aufweisen und durch einen kreisbogenförmigen Abschnitt verbunden sind. Durch eine entsprechende Ausbildung wird eine besonders hohe Symmetrie erreicht. In Draufsicht sind die beiden Hälften des Bewehrungselementes dann spiegelsymmetrisch zueinander ausgebildet. Diese hohe Symmetrie erbringt wiederum Vorteile bei der Positionierung des Bewehrungselementes normal zu einer ebenen Wand, da die einzelnen Sprossen analoger Schenkel dann jeweils den gleichen Abstand zur Wand, aber auch einen gleichen Abstand zwischen Sprossen gegenüberliegender Schenkel eines Bewehrungselementes aufweisen.The reinforcement element is advantageously shaped in such a way that the U-shaped configuration has a first leg and a second leg. It can be provided, in particular, that the first leg and the second leg have the same length and are connected by a section in the shape of a circular arc. A particularly high degree of symmetry is achieved by appropriate training. In a top view, the two halves of the reinforcement element are then designed to be mirror-symmetrical to one another. This high level of symmetry in turn brings advantages when positioning the reinforcement element normal to a flat wall, since the individual rungs analog legs then each have the same distance to the wall, but also have the same distance between rungs of opposite legs of a reinforcement element.
Im Sinne einer hohen Symmetrie und damit optimaler Eigenschaften kann auch vorgesehen sein, dass der erste Schenkel und der zweite Schenkel in Draufsicht gerade verlaufen. Insbesondere verläuft der erste Schenkel in Draufsicht parallel zum zweiten Schenkel.In terms of a high degree of symmetry and thus optimal properties, it can also be provided that the first leg and the second leg run straight in a plan view. In particular, the first leg runs parallel to the second leg in a plan view.
Die einzelnen Sprossen können im Grundsatz mit beliebigen Abständen am ersten Schenkel sowie am zweiten Schenkel angeordnet sein und müssen nicht zwingend eine bestimmte Symmetrie aufweisen. Bevorzugt ist es jedoch, dass die Sprossen an den einzelnen Schenkeln jeweils einen gleichen Abstand voneinander aufweisen. Dabei kann dieser Abstand zwischen einzelnen Sprossen am ersten Schenkel gleich groß sein wie am zweiten Schenkel. Speziell im Bereich des kreisbogenförmigen Abschnittes, welcher den ersten Schenkel mit dem zweiten Schenkel verbindet, können davon abweichende Sprossenabstände vorgesehen sein; in diesem Abschnitt können aber auch keine Sprossen vorgesehen sein, um Material einzusparen. Daneben ist es auch möglich, dass einer Sprosse an dem ersten Schenkel eine Sprosse an dem zweiten Schenkel zugeordnet ist, sodass die zugeordneten Sprossen in einer zu den Schenkeln senkrecht verlaufenden Ebene liegen. Die beiden Schenkel sind dann ident ausgebildet. Möglich ist es auch, dass im Bereich der Schenkel voneinander abweichende Abstände, insbesondere von Sprosse zu Sprosse größer werdende Abstände, vorgesehen sind. Da eine Querkraftbeanspruchung mit größer werdendem Abstand vom Auflager, zum Beispiel einer Wand, in der Regel abnimmt, kann die vorhandene Querschnittsfläche daraufhin optimiert werden.In principle, the individual rungs can be arranged at any spacing on the first leg and on the second leg and do not necessarily have to have a specific symmetry. However, it is preferred that the rungs on the individual legs each have the same distance from one another. This distance between individual rungs on the first leg can be the same as on the second leg. Rung spacings that deviate from this can be provided especially in the region of the arcuate section that connects the first leg to the second leg; However, no sprouts can be provided in this section in order to save material. In addition, it is also possible for a rung on the first leg to be associated with a rung on the second leg, so that the associated rungs lie in a plane running perpendicularly to the legs. The two legs are then designed identically. It is also possible that in the region of the legs, distances that differ from one another, in particular distances that increase from rung to rung, are provided. Since a shear force stress usually decreases with increasing distance from the support, for example a wall, the existing cross-sectional area can then be optimized.
Die Sprossen sind üblicherweise so angeordnet, dass deren erste Enden in einer Ebene liegen und dies dann bei gleicher Länge der Sprossen auch für deren zweite Enden zutrifft, die dann in einer Parallelebene liegen.The rungs are usually arranged in such a way that their first ends lie in one plane and, given the same length of the rungs, this also applies to their second ends, which then lie in a parallel plane.
Eine idente Ausbildung der Schenkel, beispielsweise in der vorstehend erläuterten Weise, trägt wiederum zu einer hohen Symmetrie und damit einer einfachen Handhabbarkeit beim Positionieren, aber auch einer homogenen Kraftableitung bei.An identical design of the legs, for example in the manner explained above, in turn contributes to a high level of symmetry and thus to simple handling during positioning, but also to a homogeneous force dissipation.
Die beiden Schenkel sind bevorzugt relativ nah aneinander angeordnet. Insbesondere kann vorgesehen sein, dass in Draufsicht ein kürzester Abstand zwischen dem ersten Schenkel und dem zweiten Schenkel kleiner ist als ein vierfacher, bevorzugt dreifacher, insbesondere zweifacher, Abstand zwischen den Sprossen eines Schenkels. Sind die Schenkel zu weit voneinander beabstandet, ist die Kraftaufnahme nahe einer Wand zu gering. Sind die Schenkel zu nah aneinander verlaufend, können sich Probleme beim Verdichten von Beton ergeben. In der Regel ist ein Radius des Kreisbogens bzw. des kreisbogenförmigen Abschnittes so bemessen, dass die Schenkel nicht mehr als 15 cm, insbesondere weniger als 10 cm, voneinander beabstandet sind. Dies lässt sich erreichen, wenn der kreisbogenförmige Abschnitt einen entsprechenden Radius aufweist bzw. bei Ausbildung als Halbkreis der Durchmesser des Halbkreises entsprechend dimensioniert ist.The two legs are preferably arranged relatively close to one another. In particular, provision can be made for the shortest distance between the first leg and the second leg to be smaller than four times, preferably three times, in particular twice the distance between the rungs of one leg when viewed from above. If the legs are too far apart, the force absorption near a wall is too low. If the legs are too close together, problems can arise when compacting concrete. As a rule, a radius of the circular arc or of the circular arc-shaped section is dimensioned in such a way that the legs are spaced apart from one another by no more than 15 cm, in particular less than 10 cm. This can be achieved if the arcuate section has a corresponding radius or, if it is designed as a semicircle, the diameter of the semicircle is dimensioned accordingly.
Weitere Merkmale, Vorteile und Wirkungen der Erfindung ergeben sich aus dem nachfolgend dargestellten Ausführungsbeispiel. In den Zeichnungen, auf welche dabei Bezug genommen wird, zeigen:
- Fig. 1
- ein Bewehrungselement in Draufsicht;
- Fig. 2
- das Bewehrungselement aus
Fig. 1 in einer Seitenansicht; - Fig. 3
- einen Schnitt entlang der Linie III-III in
Fig. 1 .
- 1
- a reinforcement element in plan view;
- 2
- the
reinforcement element 1 in a side view; - 3
- a section along the line III-III in
1 .
In
Der erste Schenkel 6 und der zweite Schenkel 7 verlaufen in Draufsicht parallel zueinander. Der kreisbogenförmige Abschnitt 8 ist mit einem relativ kleinen Radius ausgebildet, sodass der erste Schenkel 6 und der zweite Schenkel 7 in noch zu erläuternder Weise nicht allzu weit voneinander beabstandet sind. Der kreisbogenförmige Abschnitt 8 kann wie dargestellt als Halbkreis mit einem Durchmesser 10 ausgebildet sein, welcher den Abstand zwischen den Schenkeln 6, 7 bestimmt.The
Wie sich aus einer Zusammenschau von
Die Sprossen 2 des ersten Schenkels 6 sind den Sprossen 2 des zweiten Schenkels 7 weitestgehend gegenüberliegend angeordnet, sodass die Sprossen 2 in einem Schnitt quer zu den Schenkeln 6, 7 bzw. deren Längsachsen in einer Ebene 9 liegen, wie dies exemplarisch in
Der Radius des kreisbogenförmigen Abschnittes 8 wird bevorzugt so gehalten, dass ein Abstand zwischen dem ersten Schenkel 6 und dem zweiten Schenkel 7 weniger als ein vierfacher Abstand zwischen den Sprossen 2 eines Schenkels 6, 7 beträgt. Eine entsprechend enge Anordnung der Schenkel 6, 7 aneinander erlaubt auf einem kleinen Raum eine gute Kraftaufnahme bzw. -ableitung. Da des Weiteren der erste Schenkel 6 parallel zum zweiten Schenkel 7 verläuft, kann das Bewehrungselement 1 auch einfach parallel oder normal zu einer Wand bzw. zu einer zu erstellenden Wand angeordnet werden, ohne dass besondere Vorkehrungen für eine möglichst gleichmäßige Verteilung der Sprossen 2 getroffen werden müssten. Vielmehr lässt sich dies bereits durch die bloße Ablegung des Bewehrungselementes 1 erreichen, da dieses mit entsprechender Symmetrie ausgebildet ist. Dies wäre bei einer v-förmigen Anordnung, welche, sofern überhaupt machbar, eine komplexe Anordnung verschiedener Elemente erfordern würde, nicht möglich.The radius of the
Wie in
Claims (12)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATGM50004/2021U AT17497U1 (en) | 2021-01-13 | 2021-01-13 | Reinforcement element to increase a shear force resistance |
Publications (3)
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EP4030013A1 true EP4030013A1 (en) | 2022-07-20 |
EP4030013B1 EP4030013B1 (en) | 2023-11-08 |
EP4030013C0 EP4030013C0 (en) | 2023-11-08 |
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EP21217043.5A Active EP4030013B1 (en) | 2021-01-13 | 2021-12-22 | Reinforcing element for increasing transverse force resistance |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1185545A (en) * | 1966-07-23 | 1970-03-25 | Baustahlgewebe Gmbh | Improvements in or relating to Stirrup-Shaped Concrete Reinforcements |
DE3523656A1 (en) | 1984-07-24 | 1986-02-06 | AVI Alpenländische Veredelungs-Industrie Gesellschaft mbH, Graz, Steiermark | Shear reinforcement system for area-covering structural elements |
WO1987002087A1 (en) * | 1985-09-27 | 1987-04-09 | Internationella Siporex Ab | A reinforcing cage for use in moulds when casting artificial stone material, and a method for manufacturing the reinforcing cage |
DE8901350U1 (en) * | 1989-02-07 | 1989-03-23 | Hiendl, Heribert, 8440 Straubing | Connecting bracket basket |
JP2002266466A (en) * | 2001-03-07 | 2002-09-18 | Sekisui House Ltd | Anchor reinforcement |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH642131A5 (en) * | 1981-01-19 | 1984-03-30 | Fischer Draht Ag | Connection cage for reinforcing reinforced-concrete structures and the use thereof |
DE9409138U1 (en) * | 1994-06-06 | 1994-08-04 | Dausend, Hans-Werner, 42279 Wuppertal | Spacers for the upper reinforcement |
CH693644A5 (en) * | 1999-02-12 | 2003-11-28 | Ankaba Ag | Reinforcement construction is particularly for incorporation in beam-shaped thrust reinforcement for concrete ceilings in thrust introduction areas of supports |
-
2021
- 2021-01-13 AT ATGM50004/2021U patent/AT17497U1/en unknown
- 2021-12-22 EP EP21217043.5A patent/EP4030013B1/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1185545A (en) * | 1966-07-23 | 1970-03-25 | Baustahlgewebe Gmbh | Improvements in or relating to Stirrup-Shaped Concrete Reinforcements |
DE3523656A1 (en) | 1984-07-24 | 1986-02-06 | AVI Alpenländische Veredelungs-Industrie Gesellschaft mbH, Graz, Steiermark | Shear reinforcement system for area-covering structural elements |
WO1987002087A1 (en) * | 1985-09-27 | 1987-04-09 | Internationella Siporex Ab | A reinforcing cage for use in moulds when casting artificial stone material, and a method for manufacturing the reinforcing cage |
DE8901350U1 (en) * | 1989-02-07 | 1989-03-23 | Hiendl, Heribert, 8440 Straubing | Connecting bracket basket |
JP2002266466A (en) * | 2001-03-07 | 2002-09-18 | Sekisui House Ltd | Anchor reinforcement |
Also Published As
Publication number | Publication date |
---|---|
EP4030013B1 (en) | 2023-11-08 |
EP4030013C0 (en) | 2023-11-08 |
AT17497U1 (en) | 2022-06-15 |
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