EP3997285B1 - Connecting device - Google Patents
Connecting device Download PDFInfo
- Publication number
- EP3997285B1 EP3997285B1 EP21711527.8A EP21711527A EP3997285B1 EP 3997285 B1 EP3997285 B1 EP 3997285B1 EP 21711527 A EP21711527 A EP 21711527A EP 3997285 B1 EP3997285 B1 EP 3997285B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- base
- connecting device
- openings
- loop element
- casing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000004567 concrete Substances 0.000 claims description 13
- 230000014759 maintenance of location Effects 0.000 claims description 4
- 239000011178 precast concrete Substances 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims 10
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 230000002787 reinforcement Effects 0.000 description 42
- 238000003860 storage Methods 0.000 description 35
- 238000011161 development Methods 0.000 description 7
- 230000018109 developmental process Effects 0.000 description 7
- 238000004873 anchoring Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000011440 grout Substances 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
- E04G21/125—Reinforcement continuity box
- E04G21/126—Reinforcement continuity box for cable loops
Definitions
- the invention relates to a connecting device according to the preamble of claim 1.
- the precast concrete parts In order to construct supporting structures of a building made of precast concrete parts, the precast concrete parts must be connected to one another in a non-positive manner.
- Disc-shaped wall elements are connected to each other or to vertical supports at vertical joints.
- Corresponding grouting grooves are arranged on the end faces of the elements, on the basis of which connecting elements with storage boxes are arranged, which contain reinforcement elements that can be folded out.
- These reinforcement elements can consist of reinforcing steel, for example.
- Such a so-called reverse bending connection is for example in DE 39 37 275 A1 discloses, but has the disadvantage that the bending back of the reinforcing steel is cumbersome and forceful and requires robust storage boxes with large dimensions.
- the reinforcement elements can also be designed as flexible cable elements.
- Such storage boxes are, for example, in WO 03/008737 , the EP 0 914 531 A1 or the EP 0 534 475 A1 disclosed.
- loop-like elements are available perpendicular to the front side, which overlap in the joint when the prefabricated elements are assembled.
- the loops that overlap in the joint are usually over the entire height of the precast elements cast in the grouting joint with grout. After it has hardened, the grouting joint can transmit forces in different directions thanks to the overlapping connecting elements, i.e. on the one hand tensile forces in the overlap perpendicular to the joint, i.e.
- transverse forces perpendicular to the front side of the precast elements on the other hand transverse forces perpendicular to the plane of the pane and, particularly important, transverse forces parallel to the longitudinal direction of the joint.
- the latter represents a load case that occurs very frequently in construction practice.
- the end of the flexible reinforcement loop elements on the anchoring side is arranged at a suitable angle of, for example, 90° with respect to a floor of the storage box.
- plastic inserts are often provided at the bottom of the containment box which hold the anchor end of the flexible reinforcement loop member in a desired orientation.
- this complicates the structure of the connecting device.
- there is a risk of loss of the plastic inserts which can lead to improper alignment of the anchor end of the flexible reinforcement loop element and thus reduced load-bearing capacity.
- connection device discloses a connection device according to the preamble of claim 1.
- Other connection devices are in US Pat EP 2 382 363 A1 , FR 2 591 258 A1 and EP 0 819 203 A1 disclosed.
- the invention is based on the idea of designing the bottom of the storage box directly in such a way that the desired alignment of the end of the flexible reinforcement loop element on the anchoring side results.
- the invention provides that the reinforcement loop element bears against at least two contact points of the edge provided in the storage box floor, with at least a first contact point being at a greater distance from a floor extension plane than at least a second contact point.
- the configuration of the storage box floor according to the invention makes it possible to precisely determine the orientation of the reinforcement loop element in relation to the storage box floor without requiring additional components, holding devices or the like. This allows the construction and parts count of the connecting device according to the invention to be minimized, while at the same time reliable load-bearing properties are ensured.
- the at least one through-opening has an extension axis that defines an angle of at most 85°, preferably at most 75°, with respect to the extension plane of the base.
- the base has at least one projection which has a section which is inclined relative to the base and in which the through-openings are defined.
- This configuration enables a particularly simple and rapid production method for the connecting device according to the invention, in which, for example, the projection is first formed with its inclined section in the base and then the through-opening is produced. It is therefore not necessary to penetrate the soil material at an angle. Rather, the material can be penetrated orthogonally in the area of the inclined section, which is generally much easier to carry out than an oblique breakthrough.
- the bottom for each reinforcement loop element defines at least two through openings provided in the portion inclined with respect to the bottom. This results in a particularly precise alignment of the reinforcement loop element. At the same time, the risk of the reinforcement loop element slipping is minimized.
- the section inclined relative to the ground is formed flat at least in regions.
- the edge defining the through-openings—or the section inclined relative to the base— is formed by forming, in particular by deep-drawing. This allows you to work with a very small number of starting materials, and there are no joining or connecting steps required to Design edge of the through-opening according to the invention. This results in a quicker and simpler manufacturing process.
- the area of the through-openings is also designed as a funnel-shaped opening with the contact points in the bottom of the box. This facilitates the threading process of the reinforcement loop.
- the base has a plurality of further projections.
- the interlocking of the storage box in the surrounding concrete can be further improved by these projections, so that the load-bearing capacity of the connecting device according to the invention can be increased, in particular with regard to transverse force loading.
- the bottom has a plurality of indentations, which are preferably provided alternating to the projections.
- the alternating arrangement of the floor projections and floor depressions results in a high level of overall interlocking between the storage box floor and the concrete, which can be achieved with comparatively little manufacturing effort, in particular with comparatively low degrees of deformation when forming the floor projections and floor depressions.
- the high degree of overall interlocking means that transverse force stresses can be introduced into the respective concrete component via the storage box floor with little slippage, so that the force transmission can be activated via the connecting device before pronounced cracking occurs in the concrete.
- the transverse force is introduced into the concrete component via the bottom of the storage box at a point where it is no longer weakened by the joint. In this way, a frequently critical breaking off of the component flanks in the area of the joint is minimized.
- the design of the storage box floor also has a favorable effect on the transmission of forces within the joint itself, i. H. between the grout, the flexible rebar loop elements and the containment box.
- the load-bearing behavior can be represented conceptually by a framework model with tension and compression struts (although the present invention is not restricted in any way by this model presentation).
- tension and compression struts are created which emanate diagonally from the storage box floors and side walls and are supported on the respective opposite storage box.
- This support of the inclined compression struts which is decisive for the load-bearing behavior, is significantly improved by the design of the storage box floor with alternating projections and depressions.
- the flexible reinforcement loop elements ensure that the downforce generated by the inclined compression struts, which tends to widen the joint, is absorbed and passed on.
- retaining means for retaining the reinforcement loop element within the storage box are provided on the mutually facing inner surfaces of the side walls, which are preferably designed in the form of points or ribs.
- the connecting device 1 schematically shows a perspective view of a connecting device 1 as a basis for the explanation of the present invention.
- the connecting device 1 is used for connecting concrete components, in particular precast concrete parts, with a transverse force.
- the connecting device 1 comprises an elongate storage box 10 made, for example, from sheet metal and intended to be concreted into an end face of concrete structural members.
- the storage box 10 has a base 12 and two side walls 14, 16 extending in the longitudinal direction of the base.
- the base has through-openings 20 through which a flexible reinforcement loop element 2 extends in such a way that the loop section 6 comes to rest in the region of the side walls 14, 16, while on the opposite side an anchoring-side end 4 is provided with a press sleeve, which presses the free ends of the reinforcement loop running element 2 connects with each other and contributes to improved anchoring in concrete.
- the flexible reinforcement loop element 2 can be, for example, a cable formed from wires or wire strands, the reinforcement loop element 2 being able to be accommodated in the storage box 10 between the side walls 14, 16 and deflected out of it due to its flexibility. while showing 1 the collapsed state of the flexible reinforcement loop elements 2.
- the storage box 10 is shown on the left with a flange 25, but for the most part discontinuously bent away from the storage box to the outside of the box.
- the flange (25) is shown completely bent inwards throughout.
- only one or the other flange variant is pronounced on a storage box.
- the variant with the alternating flange bends 25/27 inwards and outwards is preferably used.
- the third application point 8 is pressed laterally inwards into the sheet metal structure. It can also be created by inserting an object such as a wire pin through holes in the side of the storage box, or with a sheet metal tab inserted through a slot. It is also possible to integrate this contact point in the lateral flange as element 27 or it is part of the overall flange 25, as in an embodiment in 1 is shown.
- the design of the through openings 20 is in 2 best seen in the schematic, a partially sectional side view of the 1 shown connecting device shows.
- the through openings 20 are each defined by a peripheral edge 22, the reinforcement loop element 2 in 2 at two different contact points 22a and 22b of the edge 22 is present.
- the first contact point 22a has a greater distance from an extension plane of the base 12 than the second contact point 22b.
- the angle of the anchoring-side end of the reinforcement loop element 2 in relation to the ground 12 can be 90°, for example, or be in the range of 80° to 100°, for example.
- the contact points 22 A and 22 B are thus present with a defined distance or lever arm between them for bending the reinforcement loop 2 . Spaced therefrom the third landing element 8 or 27, so that three elements can keep the elastic reinforcement element curved.
- the region of the through-opening is also designed as a funnel-shaped through-opening 20 with the contact points 22 in the box floor 12 . This makes it easier to thread in the reinforcement loop 2, which consists of a wire rope.
- edge 22 in the area of the through-opening 20 is designed like a piece of pipe and thus has an axis of extension 24 that defines an angle ⁇ of at most 85°, preferably at most 75°, with respect to the plane of extension of the base. In this way, the alignment of the end 4 of the reinforcement loop element on the anchoring side can be adjusted almost orthogonally to the bottom of the box 12 in a particularly reliable manner.
- the side wall 14 shown has retaining means 8 for retaining the reinforcement loop element 2 inside the storage box 10, which in the present embodiment are point-shaped. Alternatively or additionally, however, it is also possible to provide other types of retaining means 8, for example in the form of ribs.
- An embodiment of the connecting device according to the invention is 3 shown schematically in a detailed view.
- the base 12 has a projection 18 which has a section 18a which is inclined relative to the base and in which two through-openings 20 are defined in the present embodiment.
- the basic idea of this embodiment is to first form the projection 18 with its section 18a inclined relative to the bottom by a suitable manufacturing method such as forming, in order to then form the through-opening 20, which can be formed, for example, orthogonally to the section 18a inclined relative to the bottom. It is therefore not necessary to create a through opening that is inclined relative to the surrounding material, so that the manufacturing process can be simplified.
- the section 18a that is inclined relative to the floor is designed to be flat, at least in sections, so that the through-openings 20 do not have to be made in curved material.
- the arrangement is shown, inter alia, such that a kind of funnel-shaped inlet of the penetration opening results on one side. This makes it easier to thread in the elastic reinforcement loop element, for example in the form of a cut wire rope.
- the bottom has a further projection 30 or, as in figure 5 shown, may have a plurality of further projections 30 .
- the base 12 can also have a plurality of depressions 32, which are also in figure 5 are shown.
- an alternating arrangement of projections 30 and depressions 32 is advantageous in order to optimize the load-bearing behavior of the connecting device according to the invention, in particular with regard to transverse force stresses.
- FIGS. 4 and 5 are shown on the side of the storage box, for example in one of the possible embodiments, as round depressions 28 or projections 28, which ensure better retention in the concrete on the side wall of the storage box. They prevent the reinforcement loops 6 from being released from the surrounding concrete when folding out of the storage box.
- reinforcement loop elements 2 is not limited within the scope of the present invention and that, depending on the application, a connecting device with a single reinforcement loop element 2 can also be used.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
- Joining Of Building Structures In Genera (AREA)
Description
Die Erfindung betrifft eine Verbindungsvorrichtung nach dem Oberbegriff von Anspruch 1.The invention relates to a connecting device according to the preamble of
Um Tragstrukturen eines aus Betonfertigteilen erstellten Gebäudes zu errichten, müssen die Betonfertigteile miteinander kraftschlüssig verbunden werden. Scheibenförmige Wandelemente werden miteinander oder mit vertikal stehenden Stützen an Vertikalfugen verbunden. An den Stirnseiten der Elemente sind entsprechende Vergussnuten angeordnet, auf deren Grund Verbindungselemente mit Verwahrkästen angeordnet werden, die herausklappbare Bewehrungselemente beinhalten. Diese Bewehrungselemente können beispielsweise aus Betonstahl bestehen. Ein derartiger, sogenannter Rückbiegeanschluss ist beispielsweise in der
Bei einem anderen Konzept können die Bewehrungselemente auch als flexible Seilelemente ausgebildet sein. Derartige Verwahrkästen sind beispielsweise in der
Für eine saubere Einleitung der auftretenden Kräfte in den Beton ist es wichtig, dass das verankerungsseitige Ende der flexiblen Bewehrungsschlaufenelemente unter einem geeigneten Winkel von beispielsweise 90° gegenüber einem Boden des Verwahrkastens angeordnet ist. Zu diesem Zweck werden am Boden des Verwahrkastens oft Kunststoffeinsätze vorgesehen, welche das verankerungsseitige Ende des flexiblen Bewehrungsschlaufenelements in einer gewünschten Ausrichtung halten. Hierdurch verkompliziert sich jedoch der Aufbau der Verbindungsvorrichtung. Darüber hinaus besteht die Gefahr eines Verlusts der Kunststoffeinsätze, was zu einer ungeeigneten Ausrichtung das verankerungsseitigen Endes des flexiblen Bewehrungsschlaufenelements und somit zu einer verminderten Tragfähigkeit führen kann.For a proper introduction of the occurring forces into the concrete, it is important that the end of the flexible reinforcement loop elements on the anchoring side is arranged at a suitable angle of, for example, 90° with respect to a floor of the storage box. For this purpose, plastic inserts are often provided at the bottom of the containment box which hold the anchor end of the flexible reinforcement loop member in a desired orientation. However, this complicates the structure of the connecting device. In addition, there is a risk of loss of the plastic inserts, which can lead to improper alignment of the anchor end of the flexible reinforcement loop element and thus reduced load-bearing capacity.
Die
Es ist daher eine Aufgabe der vorliegenden Erfindung, eine Verbindungsvorrichtung der eingangs genannten Art mit mindestens einem flexiblen Bewehrungsschlaufenelement bereitzustellen, die bei einer einfachen Konstruktion ein zuverlässiges Tragverhalten besitzt.It is therefore an object of the present invention to provide a connecting device of the type mentioned at the beginning with at least one flexible reinforcement loop element, which has a reliable load-bearing behavior with a simple construction.
Diese Aufgabe wird gemäß der vorliegenden Erfindung durch eine Verbindungsvorrichtung mit den Merkmalen von Anspruch 1 gelöst. Vorteilhafte Weiterbildungen der Erfindung sind in den abhängigen Ansprüchen angegeben.This object is solved according to the present invention by a connecting device having the features of
Der Erfindung liegt der Gedanke zugrunde, den Boden des Verwahrkastens unmittelbar derart auszubilden, dass sich die gewünschte Ausrichtung des verankerungsseitigen Endes des flexiblen Bewehrungsschlaufenelements ergibt. Zu diesem Zweck ist erfindungsgemäß vorgesehen, dass das Bewehrungsschlaufenelement an mindestens zwei Anlagepunkten des im Verwahrkastenboden vorgesehenen Randes anliegt, wobei mindestens ein erster Anlagepunkt einen größeren Abstand von einer Erstreckungsebene Bodens besitzt als mindestens ein zweiter Anlagepunkt.The invention is based on the idea of designing the bottom of the storage box directly in such a way that the desired alignment of the end of the flexible reinforcement loop element on the anchoring side results. For this purpose, the invention provides that the reinforcement loop element bears against at least two contact points of the edge provided in the storage box floor, with at least a first contact point being at a greater distance from a floor extension plane than at least a second contact point.
Durch die erfindungsmäße Ausgestaltung des Verwahrkastenbodens wird es möglich, die Ausrichtung des Bewehrungsschlaufenelements in Bezug auf den Verwahrkastenboden präzise festzulegen, ohne dass hierfür zusätzliche Bauteile, Haltevorrichtungen oder dergleichen erforderlich sind. Hierdurch lässt sich die Konstruktion und Teileanzahl der erfindungsgemäßen Verbindungsvorrichtung minimieren, während gleichzeitig zuverlässige Trageigenschaften sichergestellt werden.The configuration of the storage box floor according to the invention makes it possible to precisely determine the orientation of the reinforcement loop element in relation to the storage box floor without requiring additional components, holding devices or the like. This allows the construction and parts count of the connecting device according to the invention to be minimized, while at the same time reliable load-bearing properties are ensured.
Gemäß der Erfindung ist ferner vorgesehen, dass die mindestens eine Durchgangsöffnung eine Erstreckungsachse aufweist, die einen Winkel von höchstens 85°, bevorzugt höchsten 75° gegenüber der Erstreckungsebene des Bodens definiert. Auf diese Weise wird sichergestellt, dass insbesondere das verankerungsseitige Ende, das über den Verwahrkastenboden hervorsteht, einen im Wesentlichen rechten Winkel zum Verwahrkastenboden einschließt. Eine derartige Anordnung des verankerungsseitigen Endes hat sich für die meisten Lastfälle und Belastungsarten als optimal erwiesen.According to the invention, it is further provided that the at least one through-opening has an extension axis that defines an angle of at most 85°, preferably at most 75°, with respect to the extension plane of the base. In this way it is ensured that in particular the end on the anchoring side, which protrudes beyond the storage box floor, encloses an essentially right angle to the storage box floor. Such an arrangement of the end on the anchoring side has proven to be optimal for most load cases and types of loading.
Darüber hinaus ist der Weiterbildung der Erfindung vorgesehen, dass der Boden mindestens einen Vorsprung aufweist, der einen gegenüber dem Boden geneigten Abschnitt besitzt, in welchem die Durchgangsöffnungen definiert sind. Diese Ausgestaltung ermöglicht ein besonders einfaches und zügiges Herstellungsverfahren der erfindungsgemäßen Verbindungsvorrichtung, bei welchem beispielsweise zunächst der Vorsprung mit seinem geneigten Abschnitt in dem Boden ausgeformt und anschließend die Durchgangsöffnung erzeugt wird. Es ist somit nicht erforderlich, das Material des Bodens schräg zu durchdringen. Vielmehr kann das Material im Bereich des geneigten Abschnitts orthogonal durchdrungen werden, was in aller Regel deutlich einfacher durchzuführen ist als ein schräger Durchbruch.In addition, the development of the invention provides that the base has at least one projection which has a section which is inclined relative to the base and in which the through-openings are defined. This configuration enables a particularly simple and rapid production method for the connecting device according to the invention, in which, for example, the projection is first formed with its inclined section in the base and then the through-opening is produced. It is therefore not necessary to penetrate the soil material at an angle. Rather, the material can be penetrated orthogonally in the area of the inclined section, which is generally much easier to carry out than an oblique breakthrough.
Gemäß der Erfindung ist vorgesehen, dass der Boden für jedes Bewehrungsschlaufenelement mindestens zwei Durchgangsöffnungen definiert, die in dem gegenüber dem Boden geneigten Abschnitt vorgesehen sind. Hierdurch ergibt sich eine besonders präzise Ausrichtung des Bewehrungsschlaufenelements. Gleichzeitig ist die Gefahr eines Verrutschens des Bewehrungsschlaufenelements minimiert.According to the invention it is envisaged that the bottom for each reinforcement loop element defines at least two through openings provided in the portion inclined with respect to the bottom. This results in a particularly precise alignment of the reinforcement loop element. At the same time, the risk of the reinforcement loop element slipping is minimized.
Im Hinblick auf die bereits oben angesprochene, einfache Herstellbarkeit der erfindungsgemäßen Verbindungsvorrichtung ist gemäß einer Weiterbildung der Erfindung ferner vorgesehen, dass der gegenüber dem Boden geneigte Abschnitt zumindest bereichsweise eben ausgeformt ist.With regard to the above-mentioned, simple manufacturability of the connecting device according to the invention, according to a further development of the invention it is also provided that the section inclined relative to the ground is formed flat at least in regions.
In diesem Zusammenhang ist gemäß einer Weiterbildung der Erfindung auch vorgesehen, dass der die Durchgangsöffnungen definierende Rand - oder der gegenüber dem Boden geneigte Abschnitt durch Umformen, insbesondere durch Tiefziehen ausgebildet ist. Hierdurch kann mit einer sehr geringen Anzahl von Ausgangsmaterialien gearbeitet werden, und es sind keine Füge- oder Verbindungsschritte erforderlich, um den Rand der Durchgangsöffnung erfindungsgemäß auszugestalten. Auf diese Weise ergibt sich ein zügiger und einfacher Fertigungsvorgang.In this context, according to a development of the invention, it is also provided that the edge defining the through-openings—or the section inclined relative to the base—is formed by forming, in particular by deep-drawing. This allows you to work with a very small number of starting materials, and there are no joining or connecting steps required to Design edge of the through-opening according to the invention. This results in a quicker and simpler manufacturing process.
Vorteilhaft ist, wenn der Bereich der Durchgangsöffnungen auch mit den Anlegepunkten im Kastenboden als eine trichterförmige Öffnung ausgebildet ist. Dies erleichtert den Einfädelprozess der Bewehrungsschlaufe.It is advantageous if the area of the through-openings is also designed as a funnel-shaped opening with the contact points in the bottom of the box. This facilitates the threading process of the reinforcement loop.
Darüber hinaus ist gemäß einer Weiterbildung der Erfindung vorgesehen, dass der Boden eine Mehrzahl von weiteren Vorsprüngen aufweist. Durch diese Vorsprünge lässt sich die Verzahnung des Verwahrkastens in dem umgebenden Beton weiter verbessern, sodass die Tragfähigkeit der erfindungsgemäßen Verbindungsvorrichtung insbesondere im Hinblick auf Querkraftbelastung gesteigert werden kann.In addition, according to a development of the invention, it is provided that the base has a plurality of further projections. The interlocking of the storage box in the surrounding concrete can be further improved by these projections, so that the load-bearing capacity of the connecting device according to the invention can be increased, in particular with regard to transverse force loading.
Dabei ist es besonders bevorzugt, dass der Boden eine Mehrzahl von Vertiefungen aufweist, die bevorzugt alternierend zu den Vorsprüngen vorgesehen sind. Durch die alternierende Anordnung der Bodenvorsprünge und Bodenvertiefungen ergibt sich eine hohe Gesamtverzahnung zwischen Verwahrkastenboden und Beton, die mit vergleichsweise geringem Herstellungsaufwand, insbesondere vergleichsweise geringen Umformgraden beim Bilden der Bodenvorsprünge und Bodenvertiefungen, erzielt werden kann. Die hohe Gesamtverzahnung führt dazu, dass Querkraftbeanspruchungen über den Verwahrkastenboden schlupfarm in das jeweilige Betonbauteil eingeleitet werden kann, so dass die Kraftübertragung über die Verbindungsvorrichtung aktiviert werden kann, bevor sich eine ausgeprägte Rissbildung im Beton einstellt. Ferner wird die Querkraft über den Verwahrkastenboden an einer Stelle in das Betonbauteil eingeleitet, an der dieses nicht mehr durch die Fuge geschwächt ist. Auf diese Weise wird ein häufig kritisches Abbrechen der Bauteilflanken im Bereich der Fuge minimiert.It is particularly preferred that the bottom has a plurality of indentations, which are preferably provided alternating to the projections. The alternating arrangement of the floor projections and floor depressions results in a high level of overall interlocking between the storage box floor and the concrete, which can be achieved with comparatively little manufacturing effort, in particular with comparatively low degrees of deformation when forming the floor projections and floor depressions. The high degree of overall interlocking means that transverse force stresses can be introduced into the respective concrete component via the storage box floor with little slippage, so that the force transmission can be activated via the connecting device before pronounced cracking occurs in the concrete. Furthermore, the transverse force is introduced into the concrete component via the bottom of the storage box at a point where it is no longer weakened by the joint. In this way, a frequently critical breaking off of the component flanks in the area of the joint is minimized.
Nicht zuletzt wirkt sich die Ausbildung des Verwahrkastenbodens auch günstig auf die Kraftübertragung innerhalb der Fuge selbst, d. h. zwischen dem Vergussmörtel, den flexiblen Bewehrungsschlaufenelementen und dem Verwahrkasten aus. In diesem Bereich lässt sich das Tragverhalten gedanklich durch ein Stabwerkmodell mit Zug- und Druckstreben abbilden (obgleich die vorliegende Erfindung durch diese Modellvorstellung keinerlei Einschränkung erfährt). Bei Angriff von fugenparallelen Querkräften und deren Übertragung über die Vergussfuge entstehen schräg von den Verwahrkastenböden und Seitenwänden ausgehende Druckstreben, die sich am jeweils gegenüberliegenden Verwahrkasten abstützen. Diese Abstützung der für das Tragverhalten maßgeblichen, geneigten Druckstreben wird durch die Ausgestaltung des Verwahrkastenbodens mit alternierenden Vorsprüngen und Vertiefungen deutlich verbessert. Gleichzeitig sorgen die flexiblen Bewehrungsschlaufenelemente dafür, dass die durch die schräg gestellten Druckstreben erzeugte Abtriebskraft, welche dazu neigt, die Fuge aufzuweiten, aufgenommen und weitergeleitet wird.Last but not least, the design of the storage box floor also has a favorable effect on the transmission of forces within the joint itself, i. H. between the grout, the flexible rebar loop elements and the containment box. In this area, the load-bearing behavior can be represented conceptually by a framework model with tension and compression struts (although the present invention is not restricted in any way by this model presentation). When transverse forces acting parallel to the joint are applied and transmitted via the grouting joint, compression struts are created which emanate diagonally from the storage box floors and side walls and are supported on the respective opposite storage box. This support of the inclined compression struts, which is decisive for the load-bearing behavior, is significantly improved by the design of the storage box floor with alternating projections and depressions. At the same time, the flexible reinforcement loop elements ensure that the downforce generated by the inclined compression struts, which tends to widen the joint, is absorbed and passed on.
Gemäß einer Weiterbildung der Erfindung ist ferner vorgesehen, dass an den einander zugewandten Innenflächen der Seitenwände jeweils Rückhaltemittel zum Rückhalten des Bewehrungsschlaufenelements innerhalb des Verwahrkastens vorgesehen sind, die bevorzugt punktförmig oder rippenförmig ausgebildet sind. Hierdurch ergibt sich erneut eine besonders einfache Herstellbarkeit des Verwahrkastens, da es beispielsweise nicht mehr erforderlich ist, den freien Rand des Verwahrkastens als Rückhalterung für die Schlaufe des Bewehrungsschlaufenelements nach innen umzuklappen. Vielmehr können beispielsweise punktförmig oder rippenförmig ausgebildete Rückhaltemittel durch einfaches Umformen der Seitenwände eingebracht werden. Auch der Materialbedarf wird reduziert, während gleichzeitig eine ausreichend zuverlässige Rückhaltung des Bewehrungsschlaufenelements innerhalb des Verwahrkastens erzielt werden kann.According to a further development of the invention, it is further provided that retaining means for retaining the reinforcement loop element within the storage box are provided on the mutually facing inner surfaces of the side walls, which are preferably designed in the form of points or ribs. This again results in a particularly simple manufacturability of the storage box, since it is no longer necessary, for example, to fold the free edge of the storage box inwards as a retainer for the loop of the reinforcement loop element. Rather, for example, restraining means designed in the form of points or ribs can be introduced by simply reshaping the side walls. Also the material requirement is reduced, while at the same time providing a sufficiently reliable retention of the reinforcement loop member within the containment box can be achieved.
Darüber hinaus ist gemäß einer Weiterbildung der Erfindung vorgesehen, dass es genau ein Bewehrungsschlaufenelement oder mehrere Bewehrungsschlaufenelemente aufweist.In addition, according to a development of the invention, it is provided that it has exactly one reinforcement loop element or several reinforcement loop elements.
-
Fig. 1 zeigt schematisch eine Perspektivansicht einer Verbindungsvorrichtung hier beispielhaft mit genau 2 Bewehrungsschlaufen; es können auch nur ein oder mehrere angeordnet sein.1 shows a schematic perspective view of a connecting device, here by way of example with exactly 2 reinforcement loops; only one or more can also be arranged. -
Fig. 2 zeigt schematisch eine seitliche Schnittansicht der inFig. 1 gezeigten Verbindungsvorrichtung im Bereich der Bewehrungsschlaufe;2 shows schematically a side sectional view of in1 shown connecting device in the area of the reinforcement loop; -
Fig. 3 zeigt schematisch eine Detailansicht einer Ausführungsform der erfindungsgemäßen Verbindungsvorrichtung im Bereich der Durchgangsöffnung;3 schematically shows a detailed view of an embodiment of the connecting device according to the invention in the area of the passage opening; -
Fig. 4 zeigt schematisch eine Detailansicht einer weiteren Verbindungsvorrichtung;4 shows schematically a detailed view of a further connection device; -
Fig. 5 zeigt schematisch eine Detailansicht einer weiteren Verbindungsvorrichtung, hier beispielhaft mit alternierenden Vorsprüngen und Vertiefungen und seitlichen Eindrückungen.figure 5 shows a schematic detail view of a further connection device, here by way of example with alternating projections and depressions and lateral indentations.
Bevorzugte Ausführungsformen der vorliegenden Erfindung werden nachfolgend ausführlich unter Bezugnahme auf die begleitenden Figuren beschrieben.Preferred embodiments of the present invention are described in detail below with reference to the accompanying figures.
Die Verbindungsvorrichtung 1 umfasst einen länglichen Verwahrkasten 10, der beispielsweise aus Metallblech hergestellt und dazu vorgesehen ist, in eine Stirnseite von Betonbauteilen einbetoniert zu werden. Der Verwahrkasten 10 besitzt einen Boden 12 und zwei sich in der Längsrichtung des Bodens erstreckende Seitenwände 14, 16. Der Boden besitzt Durchgangsöffnungen 20, durch die hindurch sich jeweils ein flexibles Bewehrungsschlaufenelement 2 derart erstreckt, dass der Schlaufenabschnitt 6 im Bereich der Seitenwände 14, 16 zum Liegen kommt, während auf der gegenüberliegenden Seite jeweils ein verankerungsseitiges Ende 4 mit einer Pressmuffe vorgesehen ist, die die freien Enden des Bewehrungsschlaufenelements 2 miteinander verbindet und zu einer verbesserten Verankerung in Beton beiträgt.The connecting
Bei dem flexiblen Bewehrungsschlaufenelement 2 kann es sich beispielsweise um ein aus Drähten oder Drahtlitzen gebildetes Seil handeln, wobei das Bewehrungsschlaufenelement 2 aufgrund seiner Flexibilität in dem Verwahrkasten 10 zwischen den Seitenwänden 14, 16 aufnehmbar und aus diesem heraus auslenkbar ist. Dabei zeigt
In
Bevorzugt wird an einem Verwahrkasten nur die eine oder andere Flanschvariante ausgeprägt. Bevorzugt wird die Variante mit den alternierenden Flanschbiegungen 25/27 nach innen und außen angewendet.Preferably, only one or the other flange variant is pronounced on a storage box. The variant with the alternating flange bends 25/27 inwards and outwards is preferably used.
Im Bereich des Flansches 25 findet sich eine Halbkreisausklinkung 26 zur Fixierung, in der die Bewehrungsschlaufe 2 im herausgeklappten Zustand einrastet und in ihrer orthogonalen Position zum Verwahrkasten 10 fixiert wird.In the area of the
Im Bereich des Flansches 25 findet sich ein nach innen gebogener Bereich 27, der wieder als weiteres Biegeanlegeelement zur Krümmung der elastischen Bewehrungsschlaufe 2 dient.In the area of the
Alternativ dazu ist es möglich, entweder auf das Element 27 zu verzichten und stattdessen Elemente 8 in der Seite des Verwahrkastens heraus oder hinein zu drücken, um dort die Bewehrungsschlaufe zurück zu halten. Die Elemente können aber auch vorteilhaft gemeinsam kombiniert angewendet werden, um den Schlaufenrückhalt optimal zu gestalten.Alternatively, it is possible to either dispense with
Der dritte Anlegepunkt 8 ist seitlich nach innen in die Blechstruktur hinein gedrückt. Es kann dieser auch durch einen durchgesteckten Gegenstand wie einen Drahtstift durch Löcher in der Seite des Verwahrkastens erzeugt werden oder mit einer Blechlasche, die durch einen Schlitz eingeschoben wird. Ebenfalls ist es möglich diesen Anlagepunkt in den seitlichem Flansch zu integrieren als Element 27 oder er ist Bestandteil des Gesamtflansches 25, wie in einer Ausführungsform in
Die Gestaltung der Durchgangsöffnungen 20 ist in
Zum Abbiegen der Bewehrungsschlaufe 2 sind somit die Anlegepunkte 22 A und 22 B mit einem definierten Abstand oder Hebelarm dazwischen vorhanden. Beabstandet dazu das dritte Anlegeelement 8 oder 27, so dass drei Elemente das elastische Bewehrungselement gekrümmt halten können.The contact points 22 A and 22 B are thus present with a defined distance or lever arm between them for bending the
Vorteilhaft ist, wenn der Bereich der Durchgangsöffnung auch mit den Anlegepunkten 22 im Kastenboden 12 als eine trichterförmige Durchgangsöffnung 20 ausgebildet ist. Dies erleichtert den Einfädelprozess der aus einem Drahtseil bestehenden Bewehrungsschlaufe 2.It is advantageous if the region of the through-opening is also designed as a funnel-shaped through-opening 20 with the contact points 22 in the
Darüber hinaus ist der Rand 22 im Bereich der Durchgangsöffnung 20 nach Art eines Rohrstücks ausgebildet und weist somit eine Erstreckungsachse 24 auf, die einen Winkel α von höchstens 85°, bevorzugt höchstens 75° gegenüber der Erstreckungsebene des Bodens definiert. Hierdurch lässt sich die Ausrichtung des verankerungsseitigen Endes 4 des Bewehrungsschlaufenelements besonders zuverlässig nahezu orthogonal zum Boden des Kastens 12 einstellen.In addition, the
Darüber hinaus ist in
Eine Ausführungsform der erfindungsgemäßen Verbindungsvorrichtung ist in
Im Rahmen der Erfindung ist es jedoch ebenso möglich, geneigte, rohrstutzenartige Abschnitte in den Boden 12 des Verwahrkastens 10 einzudringen, um Durchgangsöffnungen 20 mit entsprechenden Rändern 22 auszuformen. Eine entsprechende Ausgestaltung ist in
Ebenfalls in
Abschließend sei angemerkt, dass die Anzahl der Bewehrungsschlaufenelemente 2 im Rahmen der vorliegenden Erfindung nicht beschränkt ist, und dass je nach Anwendungsfall auch eine Verbindungsvorrichtung mit einem einzelnen Bewehrungsschlaufenelement 2 zum Einsatz kommen kann.Finally, it should be noted that the number of
Claims (10)
- Connecting device (1) for connecting concrete components, in particular precast concrete parts, preferably in a transverse force-locking manner, comprisingan elongate casing (10) for insertion into an end face of a component, which casing comprises a base (12) and at least two side walls (14, 16) that extend in a longitudinal direction of the base,at least one flexible reinforcing loop element (2) that can be received in the casing (10) and can be deflected out of same, whereinthe base (12) defines at least two through-openings (20) each having an edge (22) for each reinforcing loop element (2), through which through-openings the reinforcing loop element (2) extends, whereinthe reinforcing loop element (2) is in contact with two contact points (22a, 22b) of the edge, wherein at least one first contact point (22a) is at a greater distance from a plane of extension of the base (12) than at least one second contact point (22b),characterised in thatthe through-openings (20) each have an axis (24) of extension that defines an angle (α) of at most 85° relative to the plane of extension of the base (12), such that an anchorage end (4) of the reinforcing loop element (2) is almost orthogonal to the base (12) of the casing (10), and in thatthe base (12) comprises at least one projection (18) which has a portion (18a) which is inclined relative to the base and in which the through-openings (20) are defined.
- Connecting device according to claim 1, characterised in that the axis (24) of extension defines an angle (α) of at most 75° relative to the plane of extension of the base (12).
- Connecting device according to claim 1 or 2, characterised in that the portion (18a) that is inclined relative to the base is planar at least in regions.
- Connecting device according to any of the preceding claims, characterised in that the edge (22) defining the through-openings (20) and/or the portion (18a) that is inclined relative to the base is formed by means of forming, in particular by means of deep-drawing.
- Connecting device according to any of the preceding claims, characterised in that the region of the through-openings (20) is formed, in particular by means of deep-drawing, as funnel-shaped through-openings and thread-in openings (20) for the reinforcing loop (2) consisting of a wire rope.
- Connecting device according to any of the preceding claims, characterised in that the base (12) comprises a plurality of additional projections (30) and/or depressions (32).
- Connecting device according to claim 6, characterised in that the depressions (32) are provided so as to alternate with projections (30).
- Connecting device according to any of the preceding claims, characterised in that retention means (8) for retaining the reinforcing loop element (2) inside the casing (10) are provided in each case on mutually facing inner surfaces of the side walls (14, 16), which retaining means are preferably punctiform or rib-shaped or are formed on the edge of the casing (10) as a full or partial flange region (25, 27) or are formed by means of at least one additionally inserted holding element in the casing.
- Connecting device according to any of the preceding claims, characterized in that it comprises exactly one reinforcing loop element (2) or a plurality of reinforcing loop elements (2).
- Connecting device according to any of the preceding claims, characterised in that the casing comprises depressions or projections on the side walls (14 and 16) as a restraint when the reinforcing loop element (2) is folded out in the surrounding concrete.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020203116.9A DE102020203116A1 (en) | 2020-03-11 | 2020-03-11 | Connecting device |
PCT/EP2021/055901 WO2021180712A1 (en) | 2020-03-11 | 2021-03-09 | Connecting device |
Publications (3)
Publication Number | Publication Date |
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EP3997285A1 EP3997285A1 (en) | 2022-05-18 |
EP3997285B1 true EP3997285B1 (en) | 2023-07-26 |
EP3997285C0 EP3997285C0 (en) | 2023-07-26 |
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EP21711527.8A Active EP3997285B1 (en) | 2020-03-11 | 2021-03-09 | Connecting device |
Country Status (6)
Country | Link |
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EP (1) | EP3997285B1 (en) |
CN (1) | CN115427648A (en) |
DE (1) | DE102020203116A1 (en) |
HU (1) | HUE062666T2 (en) |
PL (1) | PL3997285T3 (en) |
WO (1) | WO2021180712A1 (en) |
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US11885143B2 (en) * | 2020-07-31 | 2024-01-30 | Harry A. Thompson | Oval cover member for pre-cast concrete lift hook |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0819203B2 (en) * | 1995-04-04 | 2001-10-24 | Betomax Kunststoff- und Metallwarenfabrik GmbH. & Co. KG. | Support device for at least one elastically deformable securing element and a process for section-concreting using elastically deformable securing elements as a concrete connection |
EP2773824B1 (en) * | 2011-10-31 | 2018-12-05 | Inventio AG | Load loop box and anchoring device |
EP2382363B1 (en) * | 2009-01-23 | 2018-12-26 | Philipp GmbH | Device for mounting rope loops |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2591258B1 (en) * | 1985-12-10 | 1991-04-05 | Sauveplane Pierre | MAGNETIC DEVICE FOR INSERTING REINFORCEMENTS IN METAL FORMWORK PARTICULARLY FOR REINFORCED CONCRETE |
DE3937275C2 (en) | 1989-11-09 | 2000-06-15 | Halfeneisen Gmbh & Co | Device for storing reinforcing bars for connection areas of concrete components |
DE4131956A1 (en) | 1991-09-25 | 1993-04-01 | Philipp Gmbh Geb | ROPE LOOP INSERT FOR THE COMPOSITION OF PRECAST CONCRETE PARTS |
DE29612573U1 (en) | 1996-07-20 | 1997-11-20 | Pfeifer Seil- und Hebetechnik GmbH & Co, 87700 Memmingen | Device for joining precast concrete parts |
DE20111702U1 (en) | 2001-07-18 | 2002-11-21 | Pfeifer Holding Gmbh & Co Kg | Device for joining precast concrete parts |
DE202005010080U1 (en) * | 2005-06-27 | 2006-11-09 | Pfeifer Holding Gmbh & Co. Kg | Connector for connecting concrete parts with transverse strength has floor profiled with groups of projections and recesses alternating in longitudinal direction, whereby each group has at least one projection and/or at least one recess |
-
2020
- 2020-03-11 DE DE102020203116.9A patent/DE102020203116A1/en not_active Ceased
-
2021
- 2021-03-09 EP EP21711527.8A patent/EP3997285B1/en active Active
- 2021-03-09 CN CN202180030285.1A patent/CN115427648A/en active Pending
- 2021-03-09 PL PL21711527.8T patent/PL3997285T3/en unknown
- 2021-03-09 WO PCT/EP2021/055901 patent/WO2021180712A1/en unknown
- 2021-03-09 HU HUE21711527A patent/HUE062666T2/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0819203B2 (en) * | 1995-04-04 | 2001-10-24 | Betomax Kunststoff- und Metallwarenfabrik GmbH. & Co. KG. | Support device for at least one elastically deformable securing element and a process for section-concreting using elastically deformable securing elements as a concrete connection |
EP2382363B1 (en) * | 2009-01-23 | 2018-12-26 | Philipp GmbH | Device for mounting rope loops |
EP2773824B1 (en) * | 2011-10-31 | 2018-12-05 | Inventio AG | Load loop box and anchoring device |
Also Published As
Publication number | Publication date |
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EP3997285A1 (en) | 2022-05-18 |
CN115427648A (en) | 2022-12-02 |
HUE062666T2 (en) | 2023-11-28 |
DE102020203116A1 (en) | 2021-09-16 |
WO2021180712A1 (en) | 2021-09-16 |
PL3997285T3 (en) | 2023-10-30 |
EP3997285C0 (en) | 2023-07-26 |
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