EP1703036B1 - Construction element for shear and punching reinforcement - Google Patents

Construction element for shear and punching reinforcement Download PDF

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Publication number
EP1703036B1
EP1703036B1 EP05026802A EP05026802A EP1703036B1 EP 1703036 B1 EP1703036 B1 EP 1703036B1 EP 05026802 A EP05026802 A EP 05026802A EP 05026802 A EP05026802 A EP 05026802A EP 1703036 B1 EP1703036 B1 EP 1703036B1
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EP
European Patent Office
Prior art keywords
section
rail
structural element
reinforcement
shear
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EP05026802A
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German (de)
French (fr)
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EP1703036A1 (en
Inventor
Harald Braasch
Gerhard Göhry
Markus Heck
Werner Venter
Bernhard Tschonitsch
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Schoeck Bauteile GmbH
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Schoeck Bauteile GmbH
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Priority to PL05026802T priority Critical patent/PL1703036T3/en
Publication of EP1703036A1 publication Critical patent/EP1703036A1/en
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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

Definitions

  • the invention relates to a component for shear and / or punching shear reinforcement, in particular for transmitting power in the connection area of supports to reinforced components such as flat slabs and floor slabs, consisting of a plurality of preferably designed as a head bolt reinforcement elements which are mutually parallel and spaced from each other, and from one of the reinforcing elements mutually determining connecting element, wherein the connecting element consists of a rail with approximately U- or C-shaped cross-section, which engages with their profile edges, the terminal bolt heads of the head bolts and so determines the head bolts.
  • Such shear reinforcement elements are for example from the DE-A 195 48 685 known.
  • the existing of a sheet material rail overlaps the upper bolt heads, starting from the upper side of the side up to the frustoconical underside of the upper bolt heads.
  • the minimum concrete coverage which is the edge region of the component that is susceptible to corrosion and may be equipped only with corrosion-resistant materials
  • the minimum distance between the top of the armored component, ie in particular the flat ceiling, and the top of the rail defined must therefore the upper bending reinforcement for the component on which the rail is placed, according to the inside, so be moved away from the top of the reinforced component, including the static effective height of the component suffers accordingly.
  • the present invention is based on the object to further improve the component for shear and / or punching shear reinforcement of the type mentioned and in particular to increase its static effective height.
  • the rail of the present subject invention preferably fiber-reinforced, high-strength concrete and therefore has the advantages that the rail itself take static functions and in particular in the horizontal direction can forward the shear forces or in terms of the truss-like force curve for a better power or force discharge into or out of the bolt head provides.
  • the existing high-strength concrete or concrete at least the strength class C50 profile rail with head bolts can be used advantageously to set up the entire component for shear reinforcement on the lower component formwork, so you do not need separate spacers, as for example in the above EP-A 1 033 454 is described.
  • the profile rail made of high-strength or at least concrete, the Festigstre C50, which then ensures the appropriate acquisition of the static tasks.
  • the concrete material is fiber-reinforced in order to achieve better tensile strength and thus overall better stability.
  • the rail is formed profiled at least on one of its outer long sides. As a result, the profile rail with the concrete an even better positive connection.
  • the head bolts in the rail either cohesively, for example by gluing, or are positively fixable.
  • the bolt heads of the head bolts may have a deviating from a circular circular horizontal cross section, in particular an oval or a corresponding one of a hammer head shape horizontal cross section.
  • the horizontal cross section of the bolt heads and the approximately U- or C-shaped vertical cross section of the rail can be coordinated so that the bolt heads with their narrower horizontal cross section - similar to a hammer head screw in so-called Halfen rails - in the groove of the rail between the profile edges can be inserted and that they are there by rotation around in particular about 90 ° about the bolt longitudinal axis under Schugreifung the profile edges in the groove of the rail, for example, by clamping or positive locking can be fixed.
  • an inventive shear reinforcement element 1 is shown, which consists of a plurality of vertical to be arranged in the component to be braced head bolt 2 and from a head bolt mutually in the predetermined position and orientation to each other defining connecting element 3 exists.
  • the connecting bolt 3 in turn has an approximately C-shaped vertical cross-section to form a groove 7, in which the upper bolt heads 5 of Head bolt 2 are inserted.
  • the connecting element 3 has two profile edges 8, 9 delimiting the groove 7, which form the free mutually directed limbs of the C-shaped cross section and, as in particular in FIG FIG. 3 is shown - embrace the upper bolt heads 5 and thus set the head bolt 2 positively.
  • the head bolt 2 can be inserted with their bolt heads 5 in the groove to the groove bottom 10 and then be folded by 90 ° about the pin longitudinal axis 11, so that each bolt head protrudes with the wider diameter D2 in the lateral groove recesses of the profile edges 8, 9 and is thus encompassed by these profile edges.
  • the positive connection of the head bolt 2 is further improved with the connecting element 3.
  • FIG. 3 It should be noted that although there is a covered by the rail 3 upper bolt head 5 of the head bolt 2 is shown. Likewise, however, could be determined by means of the same rail 3 of the head bolt 2 in the region of its lower bolt head and the entire component can be placed on a lower component formwork.
  • the present invention offers the advantage of providing a connecting element for a shear or punching reinforcement element which can extend into the minimum concrete cover.
  • the length of the head bolts can be increased so much that their static effective height is correspondingly improved.
  • the upper and lower bending reinforcement of the component to be reinforced can be moved all the way to the edge of the minimum concrete cover, in contrast to the profile rail consisting of sheet metal. This also makes it possible to improve the static effective height of the reinforcement once again.

Abstract

The reinforcement element (1) comprises several cap bolts (2) on a connector element (3) which comprises a profiled rail of concrete or plastics having a U or C shaped cross-section so that its profiled edges engage round the bolt heads. The profiled rail is preferably made of fibre-reinforced concrete in which the cap bolts can be fixed through adhesive or positive engagement. Independent claim describes method for assembling structural element where the connector element is first placed on the lower shuttering part with the groove facing upwards and then the lower bending reinforcement is positioned in the part to be reinforced and finally the cap bolts are pushed through the lower bending reinforcement and fixed in the groove of the connector.

Description

Die Erfindung betrifft ein Bauelement zur Schub- und/oder Durchstanzbewehrung insbesondere zur Kraftübertragung im Anschlussbereich von Stützen an bewehrte Bauteile wie Flachdecken und Bodenplatten, bestehend aus einer Mehrzahl von vorzugsweise als Kopfbolzen ausgebildeten Bewehrungselementen, die zueinander parallel und von einander beabstandet angeordnet sind, und aus einem die Bewehrungselemente gegenseitig festlegenden Verbindungselement, wobei das Verbindungselement aus einer Profilschiene mit in etwa U- oder C-förmigem Querschnitt besteht, die mit ihren Profilrändern die endständigen Bolzenköpfe der Kopfbolzen umgreift und so die Kopfbolzen festlegt.The invention relates to a component for shear and / or punching shear reinforcement, in particular for transmitting power in the connection area of supports to reinforced components such as flat slabs and floor slabs, consisting of a plurality of preferably designed as a head bolt reinforcement elements which are mutually parallel and spaced from each other, and from one of the reinforcing elements mutually determining connecting element, wherein the connecting element consists of a rail with approximately U- or C-shaped cross-section, which engages with their profile edges, the terminal bolt heads of the head bolts and so determines the head bolts.

Derartige Schubbewehrungselemente sind beispielsweise aus der DE-A 195 48 685 bekannt. Hierbei umgreift die aus einem Blechmaterial bestehende Profilschiene die oberen Bolzenköpfe ausgehend von deren Oberseite seitlich bis zur kegelstumpfförmigen Unterseite der oberen Bolzenköpfe. Da die Mindestbetonüberdeckung, das ist der Randbereich des Bauteils, der korrosionsgefährdet ist und nur mit korrosionsresistenten Materialien bestückt werden darf, den Mindestabstand zwischen der Oberseite des bewehrten Bauteils, also insbesondere der Flachdecke, und der Oberseite der Profilschiene definiert, muss demnach die obere Biegebewehrung für das Bauteil, auf die die Profilschiene aufgelegt wird, entsprechend nach innen, also von der Oberseite des bewehrten Bauteils weg gerückt werden, worunter die statische Nutzhöhe des Bauteils entsprechend leidet.Such shear reinforcement elements are for example from the DE-A 195 48 685 known. Here, the existing of a sheet material rail overlaps the upper bolt heads, starting from the upper side of the side up to the frustoconical underside of the upper bolt heads. Since the minimum concrete coverage, which is the edge region of the component that is susceptible to corrosion and may be equipped only with corrosion-resistant materials, the minimum distance between the top of the armored component, ie in particular the flat ceiling, and the top of the rail defined, must therefore the upper bending reinforcement for the component on which the rail is placed, according to the inside, so be moved away from the top of the reinforced component, including the static effective height of the component suffers accordingly.

Es wurde deshalb zur Verbesserung der statischen Nutzhöhe des Bauteils dazu übergegangen, ein Verbindungselement im Bereich der Bolzenschäfte zwischen der unteren und oberen Biegebewehrung anzuordnen, sodass nicht nur die Bolzenköpfe ganz bis an den Rand der Mindestbetonüberdeckung gerückt werden können, sondern auch die obere Biegebewehrung, die dann in dieser höchst möglichen Position auch mit den Bolzenköpfen fluchtet, wodurch wiederum die Schubkräfte noch besser übertragen werden können. Ein solches Schubbewehrungselement ist beispielsweise in der EP-A 1 033 454 dargestellt.It was therefore to improve the static effective height of the component has gone over to arrange a fastener in the area of the stud shafts between the lower and upper bending reinforcement, so that not only the bolt heads can be moved all the way to the edge of the minimum concrete coverage, but also the upper bending reinforcement, the then in this highest possible position also aligned with the bolt heads, which in turn the shear forces can be transmitted even better. Such a shear reinforcement element is for example in the EP-A 1 033 454 shown.

Ausgehend von den beiden unterschiedlichen Bauformen von Schub- und/oder Durchstanzbewehrungselementen liegt nun der vorliegenden Erfindung die Aufgabe zugrunde, das Bauelement zur Schub- und/oder Durchstanzbewehrung der eingangs genannten Art weiter zu verbessern und insbesondere dessen statische Nutzhöhe zu vergrößern.Based on the two different types of shear and / or shear reinforcement elements, the present invention is based on the object to further improve the component for shear and / or punching shear reinforcement of the type mentioned and in particular to increase its static effective height.

Diese Aufgabe wird bei einem solchen Bauelement zur Schub- und/oder Durchstanzbewehrung gelöst, durch die Merkmale von Anspruch 1. Dadurch ergibt sich der wesentliche Vorteil, dass sich das Verbindungselement aufgrund des korrosionsresistenten Materials bis in den Bereich der Mindestbetonüberdeckung erstrecken darf und so die Kopfbolzen noch einmal entsprechend länger ausgebildet werden können, da sie durch die aus Beton oder Kunststoff bestehende Profilschiene automatisch mit einer Korrosionsschutzbedeckung versehen sind. Als Ergebnis erhält man ein Bauelement zur Schub- bzw. Durchstanzbewehrung mit einer vergrößerten statischen Nutzhöhe, wobei die Profilschiene aus hochfestem Beton oder Beton zumindest der Festigkeitsklasse C50 sowohl im Bereich der oberen Bolzenköpfe als auch im Bereich der unteren Bolzenköpfe besteht.This object is achieved in such a device for shear and / or punching shear, by the features of claim 1. This results in the significant advantage that the connecting element may extend into the range of minimum concrete coverage due to the corrosion-resistant material and so the head bolts can be made longer again, as they are automatically provided by the existing concrete or plastic rail with a corrosion protection coverage. As a result, a structural element for shear or shear reinforcement with an increased static effective height, wherein the rail made of high strength concrete or concrete at least the strength class C50 both in the area of the upper bolt heads and in the area of the lower bolt heads.

Aus der US 6,161,352 , der US 5,655,349 und der DE-U 201 06 428 sind bereits Bauelemente zur Schub- bzw. Durchstanzbewehrung bekannt, bei denen die Profilschiene aus Kunststoff besteht und es somit ermöglicht, auch im Bereich der Mindestbetonüberdeckung positioniert zu werden, wodurch sich die statische Nutzhöhe des Bauteils vergrößern lässt. Derartige Kunststoffprofilschienen dienen mehr oder weniger nur als Positionierhilfe, ohne dass auf die Auswirkungen des Betons auf das Kunststoffmaterial Rücksicht genommen werden muss.From the US 6,161,352 , of the US 5,655,349 and the DE-U 201 06 428 Components for pushing or punching shear reinforcement are already known, in which the profile rail is made of plastic and thus makes it possible to be positioned even in the area of the minimum concrete cover, whereby the static useful height of the component can be increased. Such plastic profile rails serve more or less only as a positioning aid, without having to take into account the impact of the concrete on the plastic material consideration.

Im Gegensatz dazu besteht die Profilschiene des vorliegenden Erfindungsgegenstands aus, vorzugsweise faserbewehrtem, hochfestem Beton und weist demgemäß Vorteile dahingehend auf, dass die Profilschiene selbst statische Funktionen übernehmen und insbesondere in Horizontalrichtung die Schubkräfte weiterleiten kann oder im Hinblick auf den fachwerkartigen Kraftverlauf für eine bessere Kraftein- bzw. Kraftausleitung in bzw. aus dem Bolzenkopf sorgt.In contrast, the rail of the present subject invention, preferably fiber-reinforced, high-strength concrete and therefore has the advantages that the rail itself take static functions and in particular in the horizontal direction can forward the shear forces or in terms of the truss-like force curve for a better power or force discharge into or out of the bolt head provides.

Die aus hochfestem Beton oder Beton zumindest der Festigkeitsklasse C50 bestehende Profilschiene mit Kopfbolzen kann in vorteilhafter Weise dazu verwendet werden, das gesamte Bauelement zur Schubbewehrung auf die untere Bauteilschalung aufzustellen, sodass man keine separaten Abstandshalter braucht, wie es beispielsweise in der genannten EP-A 1 033 454 beschrieben ist.The existing high-strength concrete or concrete at least the strength class C50 profile rail with head bolts can be used advantageously to set up the entire component for shear reinforcement on the lower component formwork, so you do not need separate spacers, as for example in the above EP-A 1 033 454 is described.

Erfindungsgemäß besteht die Profilschiene aus hochfestem oder zumindest Beton, der Festigsklasse C50, der dann für die entsprechende Übernahme der statischen Aufgaben sorgt. Darüber hinaus ist es vorteilhaft, wenn das Betonmaterial faserbewehrt ist, um eine bessere Zugfestigkeit und insgesamt somit eine bessere Stabilität zu erreichen.According to the invention, the profile rail made of high-strength or at least concrete, the Festigsklasse C50, which then ensures the appropriate acquisition of the static tasks. In addition, it is advantageous if the concrete material is fiber-reinforced in order to achieve better tensile strength and thus overall better stability.

Um eine bessere Verbindung der Profilschiene mit dem sie umgebenden Beton des bewehrten Bauteils zur Verfügung zu stellen, empfiehlt es sich, wenn die Profilschiene zumindest auf einer ihrer Außenlängsseiten profiliert ausgebildet ist. Hierdurch geht die Profilschiene mit dem Beton eine noch bessere formschlüssige Verbindung ein.In order to provide a better connection of the rail with the surrounding concrete of the armored component available, it is recommended that the rail is formed profiled at least on one of its outer long sides. As a result, the profile rail with the concrete an even better positive connection.

Während die aus Blechmaterial bestehende bekannte Profilschiene der DE-A 195 48 685 aufgrund der Elastizität des Blechmaterials für eine Verbindung von Profilschiene und Kopfbolzen durch Klemmung sorgen kann, kommt eine solche Festlegung bei dem erfindungsgemäßen Beton material in der Regel nicht in Frage. In dieser Hinsicht ist es empfehlenswert, wenn die Kopfbolzen in der Profilschiene entweder stoffschlüssig, etwa durch Klebung, oder formschlüssig fixierbar sind. Hierzu können beispielsweise die Bolzenköpfe der Kopfbolzen einen von einer runden Kreisform abweichenden Horizontalquerschnitt, insbesondere einen ovalen oder auch einen einer Hammerkopfform entsprechenden Horizontalquerschnitt aufweisen. In diesem Fall können der horizontale Querschnitt der Bolzenköpfe und der etwa U- oder C-förmige Vertikalquerschnitt der Profilschiene so aufeinander abgestimmt sein, dass die Bolzenköpfe mit ihrem schmaleren Horizontalquerschnitt - ähnlich einer Hammerkopfschraube bei so genannten Halfenschienen - in die Nut der Profilschiene zwischen die Profilränder einsteckbar sind und dass sie dort durch Drehung um insbesondere etwa 90° um die Bolzenlängsachse unter Hintergreifung der Profilränder in der Nut der Schiene beispielsweise durch Klemmung oder Formschluss festlegbar sind.While existing from sheet metal known rail of the DE-A 195 48 685 Due to the elasticity of the sheet material for a connection of rail and head bolts can provide by clamping, such a determination in the concrete material of the invention is generally out of the question. In this regard, it is recommended that the head bolts in the rail either cohesively, for example by gluing, or are positively fixable. For this purpose, for example, the bolt heads of the head bolts may have a deviating from a circular circular horizontal cross section, in particular an oval or a corresponding one of a hammer head shape horizontal cross section. In this case, the horizontal cross section of the bolt heads and the approximately U- or C-shaped vertical cross section of the rail can be coordinated so that the bolt heads with their narrower horizontal cross section - similar to a hammer head screw in so-called Halfen rails - in the groove of the rail between the profile edges can be inserted and that they are there by rotation around in particular about 90 ° about the bolt longitudinal axis under Hintergreifung the profile edges in the groove of the rail, for example, by clamping or positive locking can be fixed.

Dadurch ist es sogar möglich, das Bauelement zur Schub- bzw. Durchstanzbewehrung in erfindungsgemäßer Weise so zu montieren, dass zunächst die Profilschiene auf die untere Bauteilschalung aufgelegt wird, dass in einem nächsten Schritt (beispielsweise in einem Fertigteilwerk) die untere Biegebewehrung positioniert wird und dass erst anschließend die Kopfbolzen durch die untere Biegebewehrung gesteckt und in der zuvor beschriebenen Art und Weise in der Profilschiene festgelegt werden. Dadurch vermeidet man die sonst bei solchen Schub- bzw. Durchstanzbewehrungselementen mit im Bereich der unteren Bolzenköpfe verlaufenden Profilschienen bestehenden Nachteile des Auffädelns der unteren Biegebewehrung auf die dann bereits positionierten Schubbewehrungselemente.As a result, it is even possible to mount the component for shear or punching reinforcement in the manner according to the invention such that first the profile rail is placed on the lower component formwork, that in a next step (for example in a precast plant) the lower bending reinforcement is positioned and only then the head bolts inserted through the lower bending reinforcement and set in the manner previously described in the rail. This avoids the disadvantages of threading the lower bending reinforcement onto the then already installed shear reinforcement elements, which would otherwise be present in the case of such shear or punching shear reinforcement elements with profile rails extending in the region of the lower bolt heads.

Weitere Merkmale und Vorteile der vorliegenden Erfindung ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispiels anhand der Zeichnungen; hierbei zeigen

Figur 1
ein erfindungsgemäßes Schubbewehrungselement in perspektivischer Seitenansicht;
Figur 2
das erfindungsgemäße Schubbewehrungselement in Seitenansicht;
Figur 3
einen Ausschnitt des erfindungsgemäßen Schubbewehrungselements im Vertikalschnitt;
Figur 4
eine Draufsicht auf einen Kopfbolzen für das erfindungsgemäße Schubbewehrungselement.
Further features and advantages of the present invention will become apparent from the following description of an embodiment with reference to the drawings; show here
FIG. 1
an inventive shear reinforcement element in a perspective side view;
FIG. 2
the shear reinforcement element according to the invention in side view;
FIG. 3
a section of the shear reinforcement element according to the invention in vertical section;
FIG. 4
a plan view of a head bolt for the shear reinforcement element according to the invention.

In Figur 1 und Figur 2 ist ein erfindungsgemäßes Schubbewehrungselement 1 dargestellt, das aus einer Mehrzahl von vertikal im zu bewehrenden Bauteil anzuordnenden Kopfbolzen 2 und aus einem die Kopfbolzen gegenseitig in der vorgegebenen Lage und Orientierung zu einander festlegenden Verbindungselement 3 besteht. Wie insbesondere auch aus Figur 2 ersichtlich ist, bestehen die Kopfbolzen 2 aus einem zylindrischen profilierten Bolzenschaft 4 mit oberen endständigen Bolzenköpfen 5 und mit unteren endständigen Bolzenköpfen 6. Das Verbindungselement 3 wiederum weist einen etwa C-förmigen Vertikalquerschnitt auf unter Bildung einer Nut 7, in die die oberen Bolzenköpfe 5 der Kopfbolzen 2 eingesteckt sind. Das Verbindungselement 3 weist hierzu zwei die Nut 7 begrenzende Profilränder 8, 9 auf, die die freien aufeinander zu gerichteten Schenkel des C-förmigen Querschnitts bilden und - wie insbesondere in Figur 3 dargestellt ist - die oberen Bolzenköpfe 5 umgreifen und somit die Kopfbolzen 2 formschlüssig festlegen.In FIG. 1 and FIG. 2 an inventive shear reinforcement element 1 is shown, which consists of a plurality of vertical to be arranged in the component to be braced head bolt 2 and from a head bolt mutually in the predetermined position and orientation to each other defining connecting element 3 exists. As in particular from FIG. 2 The connecting bolt 3 in turn has an approximately C-shaped vertical cross-section to form a groove 7, in which the upper bolt heads 5 of Head bolt 2 are inserted. For this purpose, the connecting element 3 has two profile edges 8, 9 delimiting the groove 7, which form the free mutually directed limbs of the C-shaped cross section and, as in particular in FIG FIG. 3 is shown - embrace the upper bolt heads 5 and thus set the head bolt 2 positively.

Um den Formschluss einerseits zu verbessern und um andererseits die Montage der Kopfbolzen in der Nut 7 zu vereinfachen, weisen - wie aus Figur 4 ersichtlich - die Bolzenköpfe 5 im Horizontalquerschnitt eine ovale Form auf mit einem größeren Durchmesser D2 und einem kleineren Durchmesser D1; der Durchmesser des Bolzenschaftes 4 ist mit d5 bezeichnet und ebenfalls in Figur 4 dargestellt.To improve the fit on the one hand and on the other hand to simplify the assembly of the head bolt in the groove 7, have - as from FIG. 4 seen - the bolt heads 5 in the horizontal cross section of an oval shape with a larger diameter D2 and a smaller diameter D1; the diameter of the bolt shank 4 is denoted by d 5 and also in FIG. 4 shown.

Ist nun der Abstand der beiden Profilränder 8, 9 voneinander und damit die Breite der Nut im Bereich der Schenkel des C-förmigen Querschnitts geringfügig größer als der Durchmesser D1, so können die Kopfbolzen 2 mit ihren Bolzenköpfen 5 in die Nut bis zum Nutgrund 10 eingesteckt und anschließend um 90° um die Bolzenlängsachse 11 verschränkt werden, sodass jeder Bolzenkopf mit dem breiteren Durchmesser D2 in die seitlichen Nutvertiefungen der Profilränder 8, 9 hineinragt und so von diesen Profilrändern umgriffen wird. Hierdurch wird der formschlüssige Verbund der Kopfbolzen 2 mit dem Verbindungselement 3 noch verbessert.Now is the distance between the two profile edges 8, 9 from each other and thus the width of the groove in the leg of the C-shaped cross-section slightly larger than the diameter D1, the head bolt 2 can be inserted with their bolt heads 5 in the groove to the groove bottom 10 and then be folded by 90 ° about the pin longitudinal axis 11, so that each bolt head protrudes with the wider diameter D2 in the lateral groove recesses of the profile edges 8, 9 and is thus encompassed by these profile edges. As a result, the positive connection of the head bolt 2 is further improved with the connecting element 3.

Zu Figur 3 ist anzumerken, dass dort zwar ein von der Profilschiene 3 umfasster oberer Bolzenkopf 5 des Kopfbolzens 2 gezeigt ist. Ebenso könnte jedoch mittels derselben Profilschiene 3 der Kopfbolzen 2 im Bereich seines unteren Bolzenkopfes festgelegt und das ganze Bauelement auf eine untere Bauteilschalung aufgelegt werden.To FIG. 3 It should be noted that although there is a covered by the rail 3 upper bolt head 5 of the head bolt 2 is shown. Likewise, however, could be determined by means of the same rail 3 of the head bolt 2 in the region of its lower bolt head and the entire component can be placed on a lower component formwork.

In Figur 3 erkennt man schließlich noch, wie eine Außenlängsseite 12 der Profilschiene 3 profiliert, d.h. mit in horizontaler Richtung verlaufenden Rillen 13, ausgebildet ist, um den Verbund mit dem sie umgebenden Beton des bewehrten Bauteils zu verbessern.In FIG. 3 Finally, one recognizes how an outer longitudinal side 12 of the profiled rail 3 profiled, that is formed with grooves 13 extending in the horizontal direction, in order to improve the bond with the surrounding concrete of the reinforced component.

Zusammenfassend bietet die vorliegende Erfindung den Vorteil, ein Verbindungselement für ein Schub- oder Durchstanzbewehrungselement zur Verfügung zu stellen, das sich bis in die Mindestbetonüberdeckung hineinerstrecken kann. Hierdurch lassen sich die Kopfbolzen in Ihrer Länge noch so weit vergrößern, dass entsprechend ihre statische Nutzhöhe deutlich verbessert wird. Gleichzeitig kann die obere und untere Biegebewehrung des zu bewehrenden Bauteils bis ganz an den Rand der Mindestbetonüberdeckung gerückt werden, anders als dies bei aus Blechmaterial bestehenden Profilschienen der Fall ist. Auch dadurch lässt sich die statische Nutzhöhe der Bewehrung noch einmal verbessern.In summary, the present invention offers the advantage of providing a connecting element for a shear or punching reinforcement element which can extend into the minimum concrete cover. As a result, the length of the head bolts can be increased so much that their static effective height is correspondingly improved. At the same time, the upper and lower bending reinforcement of the component to be reinforced can be moved all the way to the edge of the minimum concrete cover, in contrast to the profile rail consisting of sheet metal. This also makes it possible to improve the static effective height of the reinforcement once again.

Claims (8)

  1. Structural element for shear and/or punching reinforcement, in particular for transfer of force in the connection region of supports on reinforced components such as flat ceilings and floor plates, comprising a plurality of reinforcing elements which are constructed as head bolts (2) and are disposed parallel to one another and spaced from one another, and also comprising a connecting element (3) which reciprocally fixes the reinforcing elements, wherein the connecting element comprises a profiled rail with an approximately U-shaped or C-shaped cross-section which with its profile edges engages round the heads (5) at the end of the bolts and thus fixes the head bolts (2), characterised in that the profile rail (3) is preferably made from fibre-reinforced refractory concrete or grade C50 concrete
  2. Structural element as claimed in claim 1, characterised in that the profiled rail (3) is constructed so that it is profiled on at least one of its outer longitudinal sides (12).
  3. Structural element as claimed in at least one of the preceding claims, characterised in that the head bolts (2) can be fixed in the profiled rail (3) by material engagement for instance by glueing.
  4. Structural element as claimed in at least one of the preceding claims, characterised in that the head bolts (2) can be fixed in the profiled rail (3) by positive engagement.
  5. Structural element as claimed in at least Claim 4, characterised in that the heads (5) of the head bolts (2) have a horizontal cross-section which deviates from a circular shape.
  6. Structural element as claimed in at least Claim 5, characterised in that the heads (5) of the head bolts (2) have an oval horizontal cross-section.
  7. Structural element as claimed in at least Claim 5 or 6, characterised in that the horizontal cross-section of the bolt heads (5) and the U-shaped or C-shaped vertical cross-section of the profiled rail (3) are tailored to one another in such a way that the bolt heads (5) can be inserted with their narrower horizontal cross-section (D1) into the groove (7) of the profiled rail (3) between the profile edges (8, 9) and that by means of their wider horizontal cross-section (D2) they can be fixed there in the groove of the rail by rotation by in particular approximately 90° about the longitudinal axis (11) of the bolt whilst engaging behind the profile edges (8, 9).
  8. Method of installing a structural element for shear and/or punching reinforcement in a component to be reinforced using the shear and/or punching reinforcement from at least Claim 1, characterised in that first of all the connecting element (3) with upwardly directed groove (7) is place at least indirectly onto the lower component formwork, that the lower flexible reinforcement is then positioned in the component to the reinforced, and that finally the head bolts (2) are inserted through the lower flexible reinforcement into the groove (7) of the connecting element and are fixed there.
EP05026802A 2005-02-25 2005-12-08 Construction element for shear and punching reinforcement Not-in-force EP1703036B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05026802T PL1703036T3 (en) 2005-02-25 2005-12-08 Construction element for shear and punching reinforcement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005008748A DE102005008748A1 (en) 2005-02-25 2005-02-25 Structural reinforcement element for force transfer at flat roofs and floors has several cap bolts fixed in concrete or plastics profiled rail forming the connector element

Publications (2)

Publication Number Publication Date
EP1703036A1 EP1703036A1 (en) 2006-09-20
EP1703036B1 true EP1703036B1 (en) 2008-05-28

Family

ID=36250820

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05026802A Not-in-force EP1703036B1 (en) 2005-02-25 2005-12-08 Construction element for shear and punching reinforcement

Country Status (4)

Country Link
EP (1) EP1703036B1 (en)
AT (1) ATE397130T1 (en)
DE (2) DE102005008748A1 (en)
PL (1) PL1703036T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101320559B1 (en) * 2011-05-31 2013-10-28 재단법인 포항산업과학연구원 Shear reinforcement structuree for junctional region of slab and column
CN105239672B (en) * 2015-10-26 2017-10-20 华侨大学 A kind of shearing resistance anti-pulling connector
DE102019123256A1 (en) * 2019-08-30 2021-03-04 Reinhold Elsässer Reinforcement

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2112480A (en) * 1935-09-03 1938-03-29 Reynolds Corp Joist
DE59504223D1 (en) * 1995-05-11 1998-12-17 Halfen Gmbh & Co Kg Device for forming shear reinforcement for flat slabs
CA2165848C (en) * 1995-12-21 1999-03-30 Amin Ghali Stud-trough reinforcing system for structural concrete
DE29903737U1 (en) * 1999-03-02 1999-08-12 Schoeck Bauteile Gmbh Shear reinforcement component
DE20106428U1 (en) * 2001-04-11 2001-07-19 Kahneisen Gmbh Deutsche Dowel bar for punching shear reinforcement
CH696204A5 (en) * 2003-02-10 2007-02-15 Ankaba Ag Apparatus for shear reinforcement.

Also Published As

Publication number Publication date
DE102005008748A1 (en) 2006-08-31
EP1703036A1 (en) 2006-09-20
ATE397130T1 (en) 2008-06-15
DE502005004265D1 (en) 2008-07-10
PL1703036T3 (en) 2008-10-31

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