EP1040238B1 - Shearing reinforcement for flat ceilings and dowel strip - Google Patents
Shearing reinforcement for flat ceilings and dowel strip Download PDFInfo
- Publication number
- EP1040238B1 EP1040238B1 EP98966280A EP98966280A EP1040238B1 EP 1040238 B1 EP1040238 B1 EP 1040238B1 EP 98966280 A EP98966280 A EP 98966280A EP 98966280 A EP98966280 A EP 98966280A EP 1040238 B1 EP1040238 B1 EP 1040238B1
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- Prior art keywords
- dowel
- support
- dowels
- zone
- diameter
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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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/43—Floor structures of extraordinary design; Features relating to the elastic stability; Floor structures specially designed for resting on columns only, e.g. mushroom floors
Definitions
- the invention relates to shear reinforcement for flat slabs in Column area with several, essentially radial to one Support arranged dowel strips, each consisting of one Dowel rail and several vertical, parallel and in Distance to each other attached dowels, each an elongated dowel shaft and at least on that of the End of the dowel rail has a widened dowel head exhibit.
- the invention also relates to a Dowel bar for such shear reinforcement.
- Such shear reinforcements serve to initiate the Vertical forces occurring in flat ceilings Reinforced concrete and similarly stressed concrete slabs (DE-A-27 27 159).
- the dowels arranged perpendicular to the board level absorb the shear forces occurring in the column area. As a result, the dowel shafts are essentially also in tension claimed.
- the dowel at regular intervals along the dowel bar it is also known to use the dowels in different arrange mutual distances on the dowel bar.
- a closer dowel distance can be used in higher loads Area in the immediate vicinity of the column.
- Anchor distances are chosen larger; however here is not exceeding a specified dowel distance permissible, otherwise it would be too uneven Shear force distribution would result.
- the object of the invention is therefore a shear reinforcement initially mentioned genus so that a improved adaptation to the stresses that occur is achieved.
- This object is achieved in that the Diameter of the dowel shafts of those adjacent to the column The dowel is larger than the diameter of the dowel shafts dowels removed from the support.
- This shear reinforcement fulfills this for structural reasons existing requirement, in a neighboring column Intercept the same vertical load as in an area outer, significantly larger area without this outer area an oversizing of the shear reinforcement is present and especially not from static The specified maximum distance between the dowels is exceeded becomes.
- the dowels on at least one end, but preferably on a warm dipped head on both ends have, whose head diameter about 3 times the Is the diameter for the manufacture required energy expenditure when compressing the dowel heads smaller shaft diameter significantly smaller. The This makes production faster and more environmentally friendly.
- dowels with a Dowel diameters are arranged that are larger than that Anchor diameter of the rest, in a zone away from the column arranged dowels.
- the column reinforcement is here adapted the statically predetermined load conditions, after those in a zone near the column, for example Intercepting the same load as in a larger one far from the support Zone.
- the zone near the column and the zone away from the column are preferably contiguous, essentially each circularly arranged concentrically around the support Zones, the diameter of the zone away from the column is preferably at least twice as large as that Diameter of the zone near the column.
- each is preferably one inner dowel bar in the zone near the column aligned outer dowel bar in the zone away from the column assigned.
- the division into an inner and one outer dowel bar allows these two types of Manufacture dowel strips separately, especially from longer, equipped with evenly designed dowels To separate dowel strips.
- different Embodiments are chosen that are not only in terms of shaft diameter, but also in terms of differentiate the function of the dowel rail carrying the dowels.
- the dowels of the inner Dowel bar with one end of their dowel shafts with one inner dowel rail are welded and to their other End have a dowel head and that the dowels of the outer Anchor strip designed as a double-headed anchor and on one outer dowel rail are attached.
- dowel rails are used that only serve to secure the position of the dowels, so that here is a simpler type of connection technically can be chosen. Elaborate and polluting the environment Welding work is avoided here; these outer Dowel strips can be made with less weight be, which gives production and assembly advantages result.
- a one-piece dowel bar for such shear reinforcement characterized in that at least two on a dowel rail Groups of vertical dowels parallel and at a distance are attached to each other, each an elongated Dowel shaft and at least on that of the dowel rail end facing a widened dowel head, and that the diameter of the dowel shafts of a first group of Dowels are larger than the diameter of the dowel shafts at least a second group of dowels.
- Fig. 1 is a detail of a flat ceiling 1 in plan shown in reinforced concrete in the area of a column 2.
- a Shear reinforcement 3 is used to initiate the column forces in the flat ceiling 1 and thus forms a punching shear reinforcement the flat ceiling 1.
- the flat ceiling 1 in conventional Have a ceiling reinforcement made from an upper one Reinforcement layer 4 and a lower reinforcement layer 5 exists.
- the shear reinforcement 3 is supported by several dowel bars 6 formed, which is substantially radial to the axis of the support 2nd are arranged.
- Each dowel bar 6 consists of one Dowel rail 7, on which several vertical dowels 8 and 8 ' are mounted parallel and at a distance from each other.
- Each dowel 8, 8 ' has an elongated, preferably cylindrical dowel shaft 9 and 9 'and one at both ends compressed, widened dowel head 10 or 10 '. How shown in Fig. 2, the dowel strips 6 are in the Ceiling reinforcement 4, 5 inserted that the dowel rails 7 over the upper reinforcement layer 4 and the dowels 8, 8 'after reach down to the lower reinforcement layer 5.
- the Dowel shafts 9 have a larger diameter than that Dowel shafts 9 'of dowels 8'.
- the dowel strips 6 are like this arranged that those belonging to the first group 11 Dowels 8 with dowel shafts 9 of larger diameter in one Zone 13 near the column, while those to the second Group 12 belonging dowels 8 'with dowel shafts 9' smaller Diameter are located in a zone 14 remote from the support.
- the Zone 13 near the support and Zone 14 away from the support are in essential circular zones that are contiguous are arranged concentrically around the support 2.
- the diameter the zone 14 remote from the support is in the illustrated embodiment more than twice the diameter of the Zone 13 near the support.
- FIGS. 4 and 5 differs from the previously described embodiment essentially in that in the zone near the column 13 and in the distant zone 14 separate inner Dowel strips 6 "or outer dowel strips 6 'are arranged, who are always in alignment. While the outside Dowel strips 6 'in the manner already described are executed, whereby those designed as double-headed dowels Dowel 8 'with the above dowel rail 7' for example are connected by riveting or screwing only serves to secure the position, the dowels are 8 "of the inner one Dowel bar 6 "each with one end of their dowel shafts 9 "with an inner, below dowel rail 7" welded. The end of the inner dowel rail on the support side 7 "protrudes into the support 2. The inner dowel rail 7" is used not only to secure the position of the dowels 8 ", but in also essential for the application of force from the surrounding area Concrete in the 8 "dowels.
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- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Joining Of Building Structures In Genera (AREA)
- Reinforcement Elements For Buildings (AREA)
- Building Environments (AREA)
- Body Structure For Vehicles (AREA)
- Moulding By Coating Moulds (AREA)
- Rod-Shaped Construction Members (AREA)
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Abstract
Description
Die Erfindung betrifft eine Schubbewehrung für Flachdecken im Stützenbereich mit mehreren, im wesentlichen radial zu einer Stütze angeordneten Dübelleisten, bestehend jeweils aus einer Dübelschiene und mehreren senkrechten, parallel und im Abstand zueinander daran angebrachten Dübeln, die jeweils einen länglichen Dübelschaft und mindestens an dem von der Dübelschiene abgekehrten Ende einen verbreiterten Dübelkopf aufweisen. Die Erfindung betrifft darüberhinaus eine Dübelleiste für eine solche Schubbewehrung.The invention relates to shear reinforcement for flat slabs in Column area with several, essentially radial to one Support arranged dowel strips, each consisting of one Dowel rail and several vertical, parallel and in Distance to each other attached dowels, each an elongated dowel shaft and at least on that of the End of the dowel rail has a widened dowel head exhibit. The invention also relates to a Dowel bar for such shear reinforcement.
Derartige Schubbewehrungen dienen zur Einleitung der im Stützenbereich auftretenden Vertikalkräfte in Flachdecken aus Stahlbeton und ähnlich beanspruchte Betonplatten (DE-A-27 27 159). Die senkrecht zur Plattenebene angeordneten Dübel nehmen die im Stützenbereich auftretenden Schubkräfte auf. Dadurch werden die Dübelschäfte im wesentlichen auch auf Zug beansprucht.Such shear reinforcements serve to initiate the Vertical forces occurring in flat ceilings Reinforced concrete and similarly stressed concrete slabs (DE-A-27 27 159). The dowels arranged perpendicular to the board level absorb the shear forces occurring in the column area. As a result, the dowel shafts are essentially also in tension claimed.
Neben einer fertigungstechnisch besonders günstigen Anordnung der Dübel in gleichmäßigen Abständen entlang der Dübelleiste ist es auch bekannt, die Dübel in unterschiedlichen gegenseitigen Abständen an der Dübelleiste anzuordnen. Insbesondere kann ein engerer Dübelabstand im höherbelasteten Bereich in unmittelbarer Nähe der Stütze gewählt werden. In dem geringer belasteten stützenfernen Bereich können die Dübelabstände zwar größer gewählt werden; jedoch ist hierbei die Überschreitung eines vorgegebenen Dübelabstandes nicht zulässig, da sich anderenfalls eine zu ungleichmäßige Schubkraftverteilung ergeben würde.In addition to a particularly favorable arrangement in terms of production technology the dowel at regular intervals along the dowel bar it is also known to use the dowels in different arrange mutual distances on the dowel bar. In particular, a closer dowel distance can be used in higher loads Area in the immediate vicinity of the column. In the area less distant from the column can Anchor distances are chosen larger; however here is not exceeding a specified dowel distance permissible, otherwise it would be too uneven Shear force distribution would result.
Dies führt in der Praxis dazu, daß die Schubbewehrung nur nach dem in unmittelbarer Stützennähe auftretenden Belastungsfall dimensioniert wird und daher in einem weiter von der Stütze entfernten Bereich überdimensioniert ist.In practice, this only means that the shear reinforcement after the load occurring in the immediate vicinity of the support is dimensioned and therefore in a further of the support distant area is oversized.
Aufgabe der Erfindung ist es daher, eine Schubbewehrung der eingangs genannten Gattung so auszubilden, daß eine verbesserte Anpassung an die jeweils auftretende Beanspruchung erreicht wird.The object of the invention is therefore a shear reinforcement initially mentioned genus so that a improved adaptation to the stresses that occur is achieved.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Durchmesser der Dübelschäfte der der Stütze benachbarten Dübel größer ist als der Durchmesser der Dübelschäfte weiter von der Stütze entfernter Dübel.This object is achieved in that the Diameter of the dowel shafts of those adjacent to the column The dowel is larger than the diameter of the dowel shafts dowels removed from the support.
Diese Schubbewehrung erfüllt die aus statischen Gründen bestehende Anforderung, in einem der Stütze benachbarten Bereich die gleiche vertikale Last abzufangen wie in einem äußeren, deutlich größeren Bereich, ohne daß hierbei im äußeren Bereich eine Überdimensionierung der Schubbewehrung vorliegt und insbesondere auch nicht der aus statischen Gründen vorgegebene Höchstabstand der Dübel überschritten wird.This shear reinforcement fulfills this for structural reasons existing requirement, in a neighboring column Intercept the same vertical load as in an area outer, significantly larger area without this outer area an oversizing of the shear reinforcement is present and especially not from static The specified maximum distance between the dowels is exceeded becomes.
Die Wahl eines kleineren Schaftdurchmessers der weiter von der Stütze entfernten Dübel ermöglicht eine gleichmäßigere Beanspruchung der Dübel entsprechend der tatsächlichen Lastverteilung. Mehrere Dübel mit kleinerem Schaftdurchmesser sind im Tragverhalten günstiger als wenige Dübel mit größerem Schaftdurchmesser.Choosing a smaller shaft diameter that further from The dowel removed from the prop enables a more even dowel Stress on the dowels according to the actual one Load distribution. Several dowels with a smaller shaft diameter are less expensive than a few dowels with larger ones Shank diameter.
Da die Dübel an mindestens einem Ende, vorzugsweise aber an beiden Enden jeweils einen warm angestauchten Dübelkopf aufweisen, dessen Kopfdurchmesser etwa das 3-fache des Schaftdurchmessers ist, ist der für die Herstellung erforderliche Energieaufwand beim Stauchen der Dübelköpfe bei geringerem Schaftdurchmesser erheblich geringer. Die Produktion wird dadurch schneller und umweltfreundlicher.Because the dowels on at least one end, but preferably on a warm dipped head on both ends have, whose head diameter about 3 times the Is the diameter for the manufacture required energy expenditure when compressing the dowel heads smaller shaft diameter significantly smaller. The This makes production faster and more environmentally friendly.
Durch die Verwendung von Dübeln geringeren Schaftdurchmessers in einem wesentlichen Teil der Länge der Dübelleiste wird der Materialaufwand und das Gewicht der Dübelleiste reduziert; dies vereinfacht und erleichtert den Transport und die Montage auf der Baustelle. Da die Dübelleisten zusammen mit einer normalerweise sehr eng liegenden oberen und unteren Deckenbewehrung verlegt werden, ist ein großer Kopfdurchmesser der Dübel beim Verlegen hinderlich, da der Abstand zwischen zwei benachbarten Bewehrungsstäben oftmals sehr gering ist. Ein kleinerer Kopfdurchmesser ist hierbei für das Verlegen günstig. Das Einbringen der Bewehrung wird bei kleineren Schaftdurchmessern erleichtert.By using dowels with a smaller shaft diameter in a substantial part of the length of the dowel bar Material expenditure and the weight of the dowel bar reduced; this simplifies and facilitates transportation and Assembly on site. Since the dowel strips together with a normally very tight upper and lower Ceiling reinforcement is a large head diameter the dowel hinders laying because of the distance often very much between two adjacent reinforcing bars is low. A smaller head diameter is here for that Lay cheap. The introduction of the reinforcement is at smaller shaft diameters easier.
Gemäß einer bevorzugten Ausführung der Erfindung ist vorgesehen, daß in einer stützennahen Zone Dübel mit einem Dübeldurchmesser angeordnet sind, der größer als der Dübeldurchmesser der übrigen, in einer stützenfernen Zone angeordneten Dübel ist. Die Stützenbewehrung wird hierbei an die statisch vorgegebenen Belastungsverhältnisse angepaßt, nach denen in einer stützennahen Zone beispielsweise die gleiche Last abzufangen ist wie in einer größeren stützenfernen Zone.According to a preferred embodiment of the invention provided that dowels with a Dowel diameters are arranged that are larger than that Anchor diameter of the rest, in a zone away from the column arranged dowels. The column reinforcement is here adapted the statically predetermined load conditions, after those in a zone near the column, for example Intercepting the same load as in a larger one far from the support Zone.
Die stützennahe Zone und die stützenferne Zone sind vorzugsweise aneinandergrenzende, jeweils im wesentlichen kreisringförmige konzentrisch um die Stütze angeordnete Zonen, wobei der Durchmesser der stützenfernen Zone vorzugsweise mindestens doppelt so groß ist wie der Durchmesser der stützennahen Zone.The zone near the column and the zone away from the column are preferably contiguous, essentially each circularly arranged concentrically around the support Zones, the diameter of the zone away from the column is preferably at least twice as large as that Diameter of the zone near the column.
Neben der im Rahmen des Erfindungsgedankens liegenden Ausführung mit kontinuierlich von der Stütze nach außen abnehmendem Schaftdurchmesser der Dübel, die zwar eine weitgehende Anpassung an die Belastungsverhältnisse ermöglichen, jedoch einen wesentlichen Fertigungsaufwand bedingen würde, hat es sich insbesondere auch unter Berücksichtigung der fertigungstechnischen Gegebenheiten als sehr günstig erwiesen, den Bereich um die Stütze in zwei Zonen zu unterteilen, nämlich eine höher belastete stützennahe Zone und eine niedriger belastete stützenferne Zone, und die Schaftdurchmesser der Dübel in diesen beiden Zonen unterschiedlich zu wählen. Da hierbei nur zwei unterschiedliche Schaftdurchmesser vorgesehen werden, wird der Fertigungsaufwand gegenüber einer Ausführung mit gleichmäßigem Schaftdurchmesser nur wenig erhöht; zugleich wird aber schon eine sehr günstige Anpassung an die auftretenden Belastungsfälie erreicht. In addition to that within the scope of the inventive concept Execution with continuous from the support to the outside decreasing shaft diameter of the dowels, which is a extensive adaptation to the load conditions enable, however, a substantial manufacturing effort would require, it has especially been under Consideration of the manufacturing conditions as proved to be very favorable, the area around the support in two To subdivide zones, namely a higher load near the column Zone and a lower loaded zone distant from the support, and the shaft diameter of the dowels in these two zones to choose differently. Because here only two different ones Shaft diameters are provided, the manufacturing effort compared to a version with a uniform Shaft diameter only slightly increased; at the same time it will a very favorable adaptation to the load cases occurring reached.
Gemäß einer anderen bevorzugten Ausführungsform der Erfindung ist vorgesehen, daß in der stützennahen Zone und in der stützenfernen Zone jeweils gesonderte innere bzw. äußere Dübelleisten angeordnet sind. Vorzugsweise ist jeweils einer inneren Dübelleiste in der stützennahen Zone eine damit fluchtende äußere Dübelleiste in der stützenfernen Zone zugeordnet. Die Aufteilung in jeweils eine innere und eine äußere Dübelleiste ermöglicht es, diese beiden Arten von Dübelleisten gesondert herzustellen, insbesondere sie von längeren, mit gleichmäßig ausgeführten Dübeln bestückten Dübelleisten abzutrennen. Insbesondere können dabei für die inneren und die äußeren Dübelleisten unterschiedliche Ausführungsformen gewählt werden, die sich nicht nur hinsichtlich der Schaftdurchmesser, sondern auch hinsichtlich der Funktion der die Dübel tragenden Dübelschiene unterscheiden.According to another preferred embodiment of the invention it is envisaged that in the zone near the support and in the zone far from the support, separate inner or outer Dowel strips are arranged. Each is preferably one inner dowel bar in the zone near the column aligned outer dowel bar in the zone away from the column assigned. The division into an inner and one outer dowel bar allows these two types of Manufacture dowel strips separately, especially from longer, equipped with evenly designed dowels To separate dowel strips. In particular, for inner and outer dowel strips different Embodiments are chosen that are not only in terms of shaft diameter, but also in terms of differentiate the function of the dowel rail carrying the dowels.
Vorzugsweise ist vorgesehen, daß die Dübel der inneren Dübelleiste mit dem einen Ende ihrer Dübelschäfte mit einer inneren Dübelschiene verschweißt sind und an ihrem anderen Ende einen Dübelkopf aufweisen und daß die Dübel der äußeren Dübelleiste als Doppelkopfdübel ausgeführt und an einer äußeren Dübelschiene angebracht sind.It is preferably provided that the dowels of the inner Dowel bar with one end of their dowel shafts with one inner dowel rail are welded and to their other End have a dowel head and that the dowels of the outer Anchor strip designed as a double-headed anchor and on one outer dowel rail are attached.
Das bei der Fertigung aufwendigere Verschweißen der Dübel mit der Dübelschiene wird hierbei nur für die inneren Dübelleisten angewandt, weil es hier aus statischen Gründen vorteilhaft oder oftmals sogar erforderlich ist, die Dübelschienen zur Kraftübertragung an den umgebenden Beton heranzuziehen. In der stützenfernen Zone, in der diese erhöhte statische Forderung nicht besteht, werden Dübelschienen verwendet, die nur zur Lagesicherung der Dübel dienen, so daß hier eine fertigungstechnisch einfachere Verbindungsart gewählt werden kann. Aufwendige und die Umwelt belastende Schweißarbeiten werden hierbei vermieden; diese äußeren Dübelleisten können mit geringerem Gewicht hergestellt werden, wodurch sich Produktions- und Montagevorteile ergeben.The more complex welding of the dowels during production the dowel rail is only used for the inner dowel strips applied because it is here for static reasons advantageous or often even required that Dowel rails for power transmission to the surrounding concrete consulted. In the zone away from the column in which this If there is no increased static requirement, dowel rails are used used that only serve to secure the position of the dowels, so that here is a simpler type of connection technically can be chosen. Elaborate and polluting the environment Welding work is avoided here; these outer Dowel strips can be made with less weight be, which gives production and assembly advantages result.
Unter Berücksichtigung der statischen Anforderungen und der Montagen ist es weiter vorteilhaft, die inneren Dübelleisten mit untenliegender Dübelschiene und die äußeren Dübelleisten mit obenliegender Dübelschiene anzuordnen.Taking into account the static requirements and the It is also advantageous to assemble the inner dowel strips with dowel rail underneath and the outer dowel strips to be arranged with the dowel rail on top.
In weiterer Ausgestaltung des Erfindungsgedankens ist eine einteilige Dübelleiste für eine solche Schubbewehrung dadurch gekennzeichnet, daß an einer Dübelschiene mindestens zwei Gruppen von senkrechten Dübeln parallel und im Abstand zueinander angebracht sind, die jeweils einen länglichen Dübelschaft und mindestens an dem von der Dübelschiene abgekehrten Ende einen verbreiterten Dübelkopf aufweisen, und daß der Durchmesser der Dübelschäfte einer ersten Gruppe von Dübeln größer ist als der Durchmesser der Dübelschäfte mit mindestens einer zweiten Gruppe von Dübeln.In a further embodiment of the inventive concept is a one-piece dowel bar for such shear reinforcement characterized in that at least two on a dowel rail Groups of vertical dowels parallel and at a distance are attached to each other, each an elongated Dowel shaft and at least on that of the dowel rail end facing a widened dowel head, and that the diameter of the dowel shafts of a first group of Dowels are larger than the diameter of the dowel shafts at least a second group of dowels.
Die Erfindung wird nachfolgend an Ausführungsbeispielen näher
erläutert, die in der Zeichnung dargestellt sind. Es zeigt:
In Fig. 1 ist im Grundriß ein Ausschnitt einer Flachdecke 1
aus Stahlbeton im Bereich einer Stütze 2 dargestellt. Eine
Schubbewehrung 3 dient zur Einleitung der Stützenkräfte in
die Flachdecke 1 und bildet somit eine Durchstanzbewehrung
der Flachdecke 1.In Fig. 1 is a detail of a
Wie in Fig. 2 gezeigt, weist die Flachdecke 1 in herkömmlicher
Weise eine Deckenbewehrung auf, die aus einer oberen
Bewehrungslage 4 und einer unteren Bewehrungslage 5 besteht.
Die Schubbewehrung 3 wird von mehreren Dübelleisten 6
gebildet, die im wesentlichen radial zur Achse der Stütze 2
angeordnet sind. Jede Dübelleiste 6 besteht aus einer
Dübelschiene 7, an der mehrere senkrechte Dübel 8 und 8'
parallel und im Abstand zueinander angebracht sind.As shown in Fig. 2, the
Jeder Dübel 8, 8' weist einen länglichen, vorzugsweise
zylindrischen Dübelschaft 9 bzw. 9' und an beiden Enden einen
angestauchten, verbreiterten Dübelkopf 10 bzw. 10' auf. Wie
in Fig. 2 gezeigt, sind die Dübelleisten 6 so in die
Deckenbewehrung 4, 5 eingelegt, daß die Dübelschienen 7 über
der oberen Bewehrungslage 4 liegen und die Dübel 8, 8' nach
unten bis in die untere Bewehrungslage 5 reichen.Each
Wie in Fig. 3 gezeigt, sind an jeder Dübelleiste 6 an der
Dübelschiene 7 zwei Gruppen 11 bzw. 12 von Dübeln 8 bzw. 8'
angebracht. In der ersten Gruppe 11 von Dübeln 8 weisen die
Dübelschäfte 9 einen größeren Durchmesser auf als die
Dübelschäfte 9' der Dübel 8'.As shown in Fig. 3, on each
Wie in den Fig. 1 und 2 gezeigt, sind die Dübelleisten 6 so
angeordnet, daß sich die zur ersten Gruppe 11 gehörenden
Dübel 8 mit Dübelschäften 9 größeren Durchmessers in einer
stützennahen Zone 13 befinden, während sich die zur zweiten
Gruppe 12 gehörenden Dübel 8' mit Dübelschäften 9' kleineren
Durchmessers in einer stützenferne Zone 14 befinden. Die
stützennahe Zone 13 und die stützenferne Zone 14 sind im
wesentlichen kreisringförmige Zonen, die aneinander grenzend
konzentrisch um die Stütze 2 angeordnet sind. Der Durchmesser
der stützenfernen Zone 14 ist beim dargestellten Ausführungsbeispiel
mehr als doppelt so groß wie der Durchmesser der
stützennahen Zone 13.As shown in FIGS. 1 and 2, the
Das in den Fig. 4 und 5 dargestellte Ausführungsbeispiel
unterscheidet sich von vorher beschriebenen Ausführungsbeispiel
im wesentlichen dadurch, daß in der stützennahen Zone
13 und in der stützenfernen Zone 14 jeweils gesonderte innere
Dübelleisten 6" bzw. äußere Dübelleisten 6' angeordnet sind,
die jeweils miteinander fluchten. Während die äußeren
Dübelleisten 6' in der schon vorher beschriebenen Art
ausgeführt sind, wobei die als Doppelkopfdübel ausgeführten
Dübel 8' mit der obenliegenden Dübelschiene 7' beispielsweise
durch Nietung oder Verschraubung verbunden sind, die hierbei
nur zur Lagesicherung dient, sind die Dübel 8" der inneren
Dübelleiste 6" jeweils mit dem einen Ende ihrer Dübelschäfte
9" mit einer inneren, untenliegenden Dübelschiene 7"
verschweißt. Das stützenseitige Ende der inneren Dübelschiene
7" ragt bis in die Stütze 2. Die innere Dübelschiene 7" dient
hierbei nicht nur zur Lagesicherung der Dübel 8", sondern im
wesentlichen auch zur Krafteinleitung aus dem umgebenden
Beton in die Dübel 8".The embodiment shown in FIGS. 4 and 5
differs from the previously described embodiment
essentially in that in the zone near the
Wie schon beim vorher beschriebenen Ausführungsbeispiel sind
auch hierbei die Schaftdurchmesser der Dübelschäfte 9" der
Dübel 8" der inneren Dübelleisten 6" größer als die
Schaftdurchmesser der Dübelschäfte 9' der äußeren Dübelleisten
6' in der stützenfernen Zone 14.As in the previously described embodiment
here also the shaft diameter of the
Claims (9)
- A shearing reinforcement arrangement for flat ceilings (1) in the area of a support with several dowel strips (6) arranged essentially radially in relation to a support (2), each consisting of a dowel rail (7) to which are attached several vertical dowels (8, 8') arranged in parallel with each other and a certain distance apart, said dowels having an elongated dowel shank (9, 9') and an enlarged dowel head (10, 10') at at least the end facing away from the dowel rail (7),
characterised in that
the diameter of the shanks (9) of the dowels (8) adjacent to the support (2) is greater than the diameter of the shanks (9') of the dowels (8') further away from the support (2). - A shearing reinforcement arrangement in accordance with claim 1,
characterised in that
dowels (8, 8') positioned in a zone (13) close to the support have a dowel diameter greater than the dowel diameter of the remainder of the dowels (8') which are positioned in a zone (14) distant from the support. - A shearing reinforcement arrangement in accordance with claim 2,
characterised in that
the zone (13) close to the support and the zone (14) distant from the support are preferably adjacent, essentially circular ring-shaped zones positioned concentrically around the support (2). - A shearing reinforcement arrangement in accordance with claim 3,
characterised in that
the diameter of the zone (13) close to the support is at least twice that of the zone (14) distant from the support. - A shearing reinforcement arrangement in accordance with claim 2,
characterised in that
separate inner and outer dowel strips (6' / 6") are positioned in the zones (13) close to the support and (14) distant from the support respectively. - A shearing reinforcement arrangement in accordance with claim 5,
characterised in that
an outer dowel strip (6') in the zone (14) distant from the support is preferably aligned with an inner dowel strip (6") in the zone (13) close to the support. - A shearing reinforcement arrangement in accordance with claim 5 or 6,
characterised in that
one end of the shanks (9") of the dowels (8") on the inner dowel strip (6") is preferably welded to an inner dowel rail (7") while the other end has a dowel head (10), and that the dowels (8') on the outer dowel strip (6') are designed as double-headed dowels and attached to an outer dowel strip (7'). - A shearing reinforcement arrangement in accordance with claim 7,
characterised in that
the inner dowel strips (6") are positioned with dowel rails (7") below them while the outer dowel strips (6') are positioned with dowel strips (7') above them. - A dowel strip for a shearing reinforcement arrangement in accordance with claim 1,
characterised in that
at least two groups (11, 12) of vertical dowels (8,8') are attached to a dowel strip (7) in parallel with each other and a certain distance apart, said dowels having an elongated shank (9/9') and an enlarged head (10) at least at the end facing away from the dowel rail, and in that the diameter of the shanks (9) of a first group (11) of dowels lying at the edge of the dowel strip is greater than the diameter of the shanks (9') of at least a second group (12) of dowels (8').
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19756358A DE19756358A1 (en) | 1997-12-18 | 1997-12-18 | Shear reinforcement for flat slabs and dowel strips for this |
| DE19756358 | 1997-12-18 | ||
| PCT/EP1998/008031 WO1999032737A1 (en) | 1997-12-18 | 1998-12-10 | Shearing reinforcement for flat ceilings and dowel strip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1040238A1 EP1040238A1 (en) | 2000-10-04 |
| EP1040238B1 true EP1040238B1 (en) | 2003-03-26 |
Family
ID=7852410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98966280A Expired - Lifetime EP1040238B1 (en) | 1997-12-18 | 1998-12-10 | Shearing reinforcement for flat ceilings and dowel strip |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US6327832B1 (en) |
| EP (1) | EP1040238B1 (en) |
| JP (1) | JP4101461B2 (en) |
| AT (1) | ATE235620T1 (en) |
| CA (1) | CA2313518C (en) |
| CZ (1) | CZ297223B6 (en) |
| DE (2) | DE19756358A1 (en) |
| DK (1) | DK1040238T3 (en) |
| ES (1) | ES2191370T3 (en) |
| HK (1) | HK1031752A1 (en) |
| NO (1) | NO20003153D0 (en) |
| PL (1) | PL196257B1 (en) |
| WO (1) | WO1999032737A1 (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1223259B1 (en) * | 2001-01-12 | 2008-10-01 | Ancotech Ag | Reinforcement for columns supported slab floors as well as a method for manufacturing a reinforcement |
| DE102004040584A1 (en) * | 2004-08-21 | 2006-02-23 | Schöck Bauteile GmbH | Building component for shear reinforcement, has reinforcement components whose sides adjacent to bolt heads are arranged in line and inclined to axis of respective components, where angle of inclination lies between specified degrees |
| DE202007011508U1 (en) * | 2007-08-16 | 2008-12-24 | Ancotech Ag | Arrangement for rehabilitating zones of concrete structures punctured by ripping and tie rod element therefor |
| KR100947339B1 (en) * | 2008-01-04 | 2010-03-15 | 주식회사 힐 엔지니어링 | Shear reinforcement device for junctional region of column-slab |
| DE202008012547U1 (en) | 2008-09-23 | 2010-02-11 | Ancotech Ag | Arrangement for reinforcing a concrete structure against punching in the area of the support of a ceiling element on a support and punching shear reinforcement element for this purpose |
| DE102009056826A1 (en) * | 2009-07-31 | 2011-02-03 | Fachhochschule Gießen-Friedberg | Reinforced concrete component with reinforcement made of L-shaped sheet metal parts |
| CH701682A1 (en) | 2009-08-21 | 2011-02-28 | Sybaco Ag | Studrails. |
| US8549813B2 (en) * | 2010-12-03 | 2013-10-08 | Richard P. Martter | Reinforcing assembly and reinforced structure using a reinforcing assembly |
| US8220219B2 (en) | 2010-12-03 | 2012-07-17 | Martter Richard P | Reinforcing assembly, and reinforced concrete structures using such assembly |
| KR101596259B1 (en) * | 2014-10-30 | 2016-03-07 | 경희대학교 산학협력단 | Reinforcing System Of Reinforced Concrete Slab, Reinforced Concrete Slab Having The Same, Shear Reinforcing Unit Of Reinforced Concrete Slab, And Flat Plate Constructing Method |
| DE102016106525A1 (en) * | 2016-04-08 | 2017-10-12 | Wobben Properties Gmbh | Connecting body, wind turbine tower ring segment and method for connecting two wind turbine tower ring segments |
| US11220822B2 (en) | 2016-07-15 | 2022-01-11 | Conbar Systems Llc | Reinforcing assemblies having downwardly-extending working members on structurally reinforcing bars for concrete slabs or other structures |
| US10119276B2 (en) | 2016-07-15 | 2018-11-06 | Richard P. Martter | Reinforcing assemblies having downwardly-extending working members on structurally reinforcing bars for concrete slabs or other structures |
| US11959270B1 (en) * | 2021-04-16 | 2024-04-16 | Morse Distribution, Inc. | Stud rail systems and methods for use in reinforced concrete structures |
| EP4112833A1 (en) * | 2021-06-28 | 2023-01-04 | AVI Alpenländische Veredelungs-Industrie Gesellschaft m.b.H. | Reinforcement assembly for increasing pierce resistance and method for same |
| DE202023101939U1 (en) | 2023-04-17 | 2023-06-30 | Reinhold Elsässer | Device for inserting into panel-shaped elements |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT331469B (en) * | 1974-06-26 | 1976-08-25 | Hofstadter Dipl Ing Erich | REINFORCEMENT |
| DE2727159C3 (en) * | 1977-06-16 | 1980-05-08 | 7000 Stuttgart | Shear reinforcement for flat slabs made of reinforced or prestressed concrete on concrete supports |
| CA1085642A (en) * | 1978-02-28 | 1980-09-16 | Amin Ghali | Shear reinforcement for concrete flat slabs |
| DE3417330C1 (en) * | 1984-05-10 | 1985-09-19 | Andrä, Wolfhart, Dr.-Ing., 7000 Stuttgart | Connection of an in-situ concrete slab to a prefabricated support |
| DE4129903A1 (en) * | 1991-09-09 | 1993-03-11 | Deha Ankersysteme | DUEBELLEIBTE |
| AU1374897A (en) * | 1995-12-21 | 1997-07-17 | Deha Ankersysteme Gmbh & Co Kg | Dowel support for bent-up reinforcement bars and process for the production thereof |
| CA2165848C (en) * | 1995-12-21 | 1999-03-30 | Amin Ghali | Stud-trough reinforcing system for structural concrete |
| DE29612053U1 (en) * | 1996-07-11 | 1996-10-31 | Eisenhofer, André, Dipl.-Ing., 86150 Augsburg | Reinforcement device |
| US5992123A (en) * | 1996-07-19 | 1999-11-30 | Erico International Corporation | Shear stud assembly and method for reinforcement of column or beam connections |
| DE29614209U1 (en) * | 1996-08-16 | 1997-12-11 | Dausend, Hans-Werner, 42289 Wuppertal | Dowel bar |
-
1997
- 1997-12-18 DE DE19756358A patent/DE19756358A1/en not_active Ceased
-
1998
- 1998-12-10 CZ CZ20002216A patent/CZ297223B6/en not_active IP Right Cessation
- 1998-12-10 AT AT98966280T patent/ATE235620T1/en active
- 1998-12-10 WO PCT/EP1998/008031 patent/WO1999032737A1/en active IP Right Grant
- 1998-12-10 DK DK98966280T patent/DK1040238T3/en active
- 1998-12-10 EP EP98966280A patent/EP1040238B1/en not_active Expired - Lifetime
- 1998-12-10 PL PL341207A patent/PL196257B1/en unknown
- 1998-12-10 ES ES98966280T patent/ES2191370T3/en not_active Expired - Lifetime
- 1998-12-10 CA CA002313518A patent/CA2313518C/en not_active Expired - Lifetime
- 1998-12-10 US US09/581,754 patent/US6327832B1/en not_active Expired - Lifetime
- 1998-12-10 JP JP2000525642A patent/JP4101461B2/en not_active Expired - Lifetime
- 1998-12-10 DE DE59807680T patent/DE59807680D1/en not_active Expired - Lifetime
-
2000
- 2000-06-16 NO NO20003153A patent/NO20003153D0/en not_active Application Discontinuation
-
2001
- 2001-03-30 HK HK01102332A patent/HK1031752A1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001527177A (en) | 2001-12-25 |
| HK1031752A1 (en) | 2001-06-22 |
| NO20003153L (en) | 2000-06-16 |
| US6327832B1 (en) | 2001-12-11 |
| NO20003153D0 (en) | 2000-06-16 |
| PL196257B1 (en) | 2007-12-31 |
| ES2191370T3 (en) | 2003-09-01 |
| CA2313518C (en) | 2006-02-07 |
| PL341207A1 (en) | 2001-03-26 |
| DE59807680D1 (en) | 2003-04-30 |
| WO1999032737A1 (en) | 1999-07-01 |
| JP4101461B2 (en) | 2008-06-18 |
| ATE235620T1 (en) | 2003-04-15 |
| DE19756358A1 (en) | 1999-07-01 |
| CZ20002216A3 (en) | 2001-01-17 |
| EP1040238A1 (en) | 2000-10-04 |
| CZ297223B6 (en) | 2006-10-11 |
| CA2313518A1 (en) | 1999-07-01 |
| DK1040238T3 (en) | 2003-06-10 |
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