EP2483477B2 - Device for bridging an expansion joint - Google Patents

Device for bridging an expansion joint Download PDF

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Publication number
EP2483477B2
EP2483477B2 EP10776260.1A EP10776260A EP2483477B2 EP 2483477 B2 EP2483477 B2 EP 2483477B2 EP 10776260 A EP10776260 A EP 10776260A EP 2483477 B2 EP2483477 B2 EP 2483477B2
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EP
European Patent Office
Prior art keywords
substructure
superstructure
polyurea
stabilizing
elastic element
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EP10776260.1A
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German (de)
French (fr)
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EP2483477B1 (en
EP2483477A2 (en
Inventor
Gustav Gallai
Georg Michael Wolff
Erwin Detter
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Mageba SH AG
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Mageba SH AG
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C11/00Details of pavings
    • E01C11/02Arrangement or construction of joints; Methods of making joints; Packing for joints
    • E01C11/04Arrangement or construction of joints; Methods of making joints; Packing for joints for cement concrete paving
    • E01C11/10Packing of plastic or elastic materials, e.g. wood, resin
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • E01D19/06Arrangement, construction or bridging of expansion joints
    • E01D19/067Flat continuous joints cast in situ
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C11/00Details of pavings
    • E01C11/02Arrangement or construction of joints; Methods of making joints; Packing for joints
    • E01C11/04Arrangement or construction of joints; Methods of making joints; Packing for joints for cement concrete paving
    • E01C11/10Packing of plastic or elastic materials, e.g. wood, resin
    • E01C11/103Joints with packings prepared only in situ; Materials therefor
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • E01D19/06Arrangement, construction or bridging of expansion joints

Definitions

  • the invention relates to a device for bridging an expansion joint in the area of a roadway, comprising a superstructure and a substructure, the superstructure having at least one elastic element and the substructure forming a support for the superstructure.
  • connection construction for components undergoing expansion and/or contraction, comprising an elastic connection layer, which is provided with flexible reinforcement means attached to the components.
  • the flexible reinforcement means can be formed by at least one spring cast into the connecting layer, the ends of which are mounted on the respective components.
  • the spring is in particular a prestressed tension spring.
  • a wire mat can be cast into the elastic connecting layer as a flexible reinforcement.
  • the elastic connecting layer is formed by an expandable and shrinkable polymerized bitumen.
  • the DE 32 25 304 C2 describes an expansion joint cover in roadways with an elastomeric expansion element, which is held watertight in recesses of the joint on both sides delimiting edge bodies made of elastomeric concrete, which are produced at the construction site by casting corresponding recesses in the roadway so that they are flush with the roadway.
  • the stretching element consists of an elastomer which corresponds to the elastomeric component of the edge body. This expansion element, produced by casting between the edge bodies, closes the joint between the edge bodies and adheres firmly to them.
  • the elastomeric concrete of the edge bodies has mineral grains as an aggregate.
  • the elastomer of the expansion element or the elastomeric component of the edge body can be formed by a cold-curing polyurethane.
  • the US6561728B1 discloses an expansion joint bridging device having a resilient member cast-in-place from a mixture of polyurethane and bitumen.
  • the element can be coated with sand or a blunting material.
  • CH 691 496 A5 describes a device for bridging an expansion joint in the area of a roadway, in which a connecting layer bridging the expansion joint is used, which is made of a polymerized bitumen.
  • GB 2293396A discloses a roadway transition in which a polyurea-containing resin mortar is used as a grout for anchoring reinforcement structures to the respective substructure.
  • AU2002 10047A4 discloses a method for sealing a joint construction in which a joint filling and the adjacent components are sprayed with a sealing layer of polyurea.
  • the object of the present invention is to specify an improved device for bridging an expansion joint in the area of a roadway.
  • This object is achieved by the device specified in claim 1.
  • the expansion joint bridging device according to the invention is characterized—among other features—in particular in that at least one holding element is arranged in the superstructure structure, which is at least partially embedded in the elastic element.
  • the connection between the superstructure and the substructure is reinforced in the vertical area of the contact surface between the elastic element of the superstructure and the adjacent road surface, so that this contact surface is relieved and peeling as a result of compressive or tensile stresses is reduced.
  • the at least one holding element improves the adhesion of the elastic element to the substructure. Improved mechanical resilience of the device is thus achieved, so that it has a longer service life and maintenance work and the costs associated therewith can be reduced.
  • the holding element(s) are formed by an angle profile or angle profiles, legs are present on this holding element or these holding elements, which reach into the elastic element and thus the attachment of the holding element or the holding elements to the elastic Element can be improved, which in turn higher forces can be transmitted.
  • the retaining element extends at least approximately over the entire length of the superstructure.
  • the holding element extends at least approximately over the entire length of the expansion joint. It won't only the structure of the device itself is simplified - the elastic element is produced on site by casting, as will be explained in more detail below - but a further improvement in the forces that can be absorbed by the expansion joint can be achieved by these forces distributed over a larger area within the elastic element and thus local differences in the load on the holding element or the device do not have an effect or have a reduced effect. Provision can preferably be made for the holding element(s) to have at least one recess into which the elastic element projects. Better embedding of the holding element or the holding elements in the elastic element is thus achieved, which in turn can improve the mechanical stability of the device, in particular against peeling off.
  • the elastic element of the superstructure is formed from a castable synthetic resin or plastic, in that it consists at least partially of a polyurea or polyurea system.
  • the polyurea or polyurea system has a Shore A hardness of 55 to 85, the tensile strength of the polyurea or polyurea system according to DIN 53504 is between 10 and 30 N/mm2. Furthermore, the polyurea or polyurea system has an elongation according to DIN 53504 between 400 and 1200%.
  • the viscosity of the polyurea or polyurea system at 23 °C is between 4000 and 6000 mPas.
  • this improves the simple manufacture of the device on the construction site, and on the other hand, unlike with bituminous systems, trafficability is maintained even at high climatic temperatures, for example in direct sunlight, at which bituminous systems already soften.
  • a polyurea or polyurea system is more wear-resistant than the bitumen-based systems known in the prior art.
  • the use of a polyurea or a polyurea system also better prevents the formation of ruts, crushing and surface leakage.
  • the polyurea or polyurea system can be installed cold over a wide temperature range. Conventional bituminous systems have to be installed hot, which involves considerable energy consumption and high noise emissions. Furthermore, larger expansion distances than before can also be mastered, i.e. bridged.
  • the layer thickness of the elastic element By using a polyurea or a polyurea system to produce the elastic element, it is possible for the layer thickness of the elastic element to be a maximum of 60 mm. This elastic element is therefore rather thin in contrast to the asphalt expansion joints on the market. This reduction in layer thickness has the advantage that the deformation forces are lower. The deformation forces that occur when the length of the supporting structure changes (tension/compression) cause a load on the adjacent components such as abutments, supporting structures, bridge bearings on the one hand, and internal stresses in the material of the elastic element on the other. The reduced layer thickness of the elastic element therefore allows the adjacent and subsequent components of the structure to be made smaller and more economically.
  • the substructure can at least partially consist of a material from the group comprising epoxy resins, polymer concrete, concrete, metals such as steel.
  • a substructure structure that can be produced at low cost is thus made available, which provides the necessary rigid properties for supporting the superstructure structure, that is to say in particular the elastic element.
  • the holding element(s) is/are connected to the substructure with at least one chemical anchor.
  • This embodiment variant of the invention further increases the load-bearing capacity of the device in that peeling off in the area of the elastic element can be better prevented by fastening the holding element or the holding elements to the substructure, ie the supporting structure. Furthermore, after the holding element or the holding elements protrude with their upper side into the elastic element and thus also the shear connector or anchors protrude or protrude with one end into the elastic element, a better composite effect is achieved, which leads to removal the compressive and tensile stresses occurring on the adhesive surface between the superstructure and the substructure.
  • At least one sliding lug is formed on the elastic element on an underside pointing in the direction of the substructure, preferably extending continuously over at least approximately the entire length of the superstructure.
  • At least one stabilizing element can be arranged in the elastic element. This means that the elastic element can absorb expansion or displacement paths that are significantly larger than those of simple, elastic covering expansion joints made of bituminous materials.
  • the stabilizing element or elements can have a sleeve-shaped element or elements, in which the stabilizing element or in which the stabilizing elements are arranged.
  • the sleeve-shaped element or elements act as thrust sleeves in which the stabilizing element or elements are guided and in which they can move, thereby improving the effect of the stabilizing elements as reinforcement for the elastic element of the superstructure can be.
  • the stabilizing element(s) is/are preferably supported on the holding element or on the holding elements, as a result of which the stabilization of the expansion joint can be improved via these stabilizing elements and the holding elements.
  • the stabilizing element(s) extends between the upwardly protruding legs of the angle profiles, i.e. the legs of the angle profiles projecting into the elastic element, and in particular rests against these legs in order to further improve the stabilization function to achieve the interaction of the stabilizing elements with the holding element or the holding elements.
  • the stabilizing element(s) or the sleeve-shaped element(s) are at least partially surrounded by a spiral hose. This is cast in particular in the elastic element and causes expansions to be evenly transmitted to the stabilization element or elements. In addition, this reduces or avoids friction with the elastic element, for example the polyurethane casting.
  • FIG. 1 shows a device 1 for bridging an expansion joint 2 between a carriageway 3 and an adjoining carriageway 4 of a bridge, in particular a road bridge.
  • the device 1 has a superstructure 5 and a substructure 6 .
  • the substructure 6 comprises two spaced-apart floor elements 7 , 8 which extend into the area of the expansion joint 2 .
  • a substructure sleeper 9, 10 is arranged on each of these floor elements 7, 8, in particular connected to the floor elements 7 and 8, respectively.
  • the floor elements 7, 8 can consist, for example, of a concrete such as is used in road construction.
  • the two underbody sleepers 9, 10 are arranged between the roadways 3, 4 in the expansion joint 2 and can be made in particular of an epoxy resin or a polymer concrete or another suitable, rigid building material. In particular, it is also possible to produce these two substructure sleepers 9, 10 on site, provided that prefabricated elements are not used for this purpose.
  • the substructure 6 is rigid in relation to the superstructure 5 .
  • the term “rigid” in the context of the invention means that this substructure 6 or its components, with the exception of thermal expansion or contraction, do not experience any further dimensional changes during operation of the device 1.
  • the two underbody sleepers 9, 10 preferably have a width 11, 12 that is dimensioned such that a gap formed by the spaced arrangement of the two floor elements 7, 8 relative to one another is not narrowed, i.e. preferably the end faces of the underbody sleepers 9, 10 that face one another are each arranged flush with the respective end faces of the two floor elements 7, 8 facing one another, as is shown in 1 is shown.
  • the superstructure 5 comprises an elastic element 15 which extends between the two roadways 3, 4 and the expansion joint 2 in a bridging manner.
  • this elastic element is flush with the surfaces of the roadways 3, 4 on the upper side, so that there is no or no significant elevation or depression in the area of the expansion joint 2 on the roadway side that affects driving comfort.
  • the elastic element 15 is supported on the substructure sleepers 9, 10. After the elastic member 15 is cast from a synthetic resin or Plastic is produced directly on the construction site, there is the possibility that the material of the elastic element 15 connects at least in those areas in which this elastic element 15 rests directly on the substructure sleepers 9, 10, forming a contact surface 16.
  • a cold-curing, castable synthetic resin or a cold-curing, castable plastic is used for the elastic element 15, namely a polyurea or a polyurea system, in order to be able to produce the elastic element 15 directly on the construction site by casting.
  • a polyurea or polyurea system with a hardness adapted to the application is used as the polyurea or polyurea system, so that on the one hand deformation is possible with the lowest possible resistance and on the other hand the loads from traffic result in the lowest possible deformations.
  • a 2K polyurea system can be used.
  • the polyurea or polyurea system has a Shore A hardness of 55 to 85.
  • the tensile strength of the polyurea or polyurea system according to DIN 53504 is between 10 and 30 N/mm2. Furthermore, the polyurea or polyurea system has an elongation according to DIN 53504 between 400 and 1200%. In particular, it is advantageous if a polyurea or a polyurea system with thixotropic properties is used.
  • the viscosity of the polyurea or polyurea system is between 4000 and 6000 mPas at 23 °C.
  • an adhesion promoter a so-called primer, can also be applied beforehand.
  • a cover element 17 is arranged on the substructure sleepers 9, 10, which covers this gap in particular in a moisture-tight manner.
  • This cover element 17 can consist of a metal or plastic strip, for example.
  • the cover element 17 preferably has a centering element 18 for more precise installation of this cover element 17 or to increase the operational reliability of the device 1, with the centering element 18 protruding into the gap between the two floor elements 7, 8 or the substructure sleepers 9, 10.
  • Two holding elements 19, 20 are arranged in the area of the contact surface 16.
  • the two holding elements 19, 20 are thus embedded in the elastic element 15, at least on the surface which protrudes in the direction of the latter.
  • the holding elements 19, 20 are as angle elements with a base 21, 22 and from the base 21, 22 at least approximately at right angles upwards in the elastic element 15 and embedded in it, protruding legs 23, 24.
  • the two legs 23, 24 here, as shown, preferably facing the lanes 3, 4 in each case.
  • the holding elements 19, 20 are preferably made of a metal, for example steel.
  • the latter can have at least one recess; these are preferably designed as perforated sheet metal or perforated sheet metal, so that during the production of the elastic element 15 from the castable, hardenable synthetic resin or to allow the plastic to enter these recesses.
  • the two holding elements 19, 20 extend over the entire length of the expansion joint 2, which extends in the direction of the viewing direction of the embodiment variant 1 extends.
  • several individual holding elements 19, 20 are arranged next to one another in the direction of the length.
  • only a single holding element 19, which rests on both substructure sleepers 9, 10 and is arranged to bridge the gap is used.
  • this single holding element 19 has at least one elastic area, for example in the area of the gap, between the substructure sleepers 9, 10 or the floor elements 7, 8, in order to compensate for the expansion or shrinkage of the device 1 to allow due to the temperature change caused by dimensional changes in the lanes 3, 4 and the road and the bridge.
  • this holding element 19 can be designed in several parts with an elastic intermediate piece or there is also the possibility of enabling this expansion or contraction by geometric design of the holding element 19 .
  • this holding element 19 can be embodied in a zigzag shape or in the shape of an accordion, etc., in particular in the region of the gap.
  • the holding elements 19, 20 can each be provided with at least one shear connector 25, 26, with these shear connectors 25, 26 being made of the elastic element 15 at least in the area of the substructure sleepers 9 or 10, preferably up to the area of the floor elements 7 or 8, as in 1 shown, protrude.
  • this shear connector 25, 26 can be held in the substructure sleeper 9, 10 and/or the floor element 7, 8 with a corresponding dowel.
  • these chemical anchors 25, 26 are already concreted in with the floor element 7, 8 or cast into the substructure sleepers 9, 10. The embedding of the upper ends of the chemical anchors that protrude into the elastic element 15 takes place in the elastic element 15 during the production of the elastic element 15 from the synthetic resin or the plastic by casting the expansion joint 2.
  • shear connector 25, 26 is arranged on each side of the expansion joint 2 is preferably provided within the scope of the invention that in the longitudinal direction of the expansion joint 2 several such shear connectors 25, 26 are arranged side by side and preferably at regular intervals from one another.
  • each of these holding elements 19, 20 preferably has its own shear connector 25, 26.
  • the chemical anchors 25, 26 are preferably made of a metal, in particular steel.
  • the elastic element 15 has at least one sliding lug 27 on both sides of the expansion joint 2, i.e. on each side in the area next to the gap formed between the substructure sleepers 9, 10 or floor elements 7, 8.
  • These two thrust lugs 27, 28 are produced during the production of the elastic element 15 by pouring the expansion joint 2 with the synthetic resin or the plastic, for which purpose corresponding groove-like grooves are provided in the substructure sleepers 9, 10 to prevent the synthetic resin from escaping or entering or to allow the plastic in these grooves. It is thus made possible for these thrust lugs 27 , 28 to be produced in one piece with the elastic element 15 .
  • the entry of the synthetic resin or plastic into the grooves of the underbody sleepers 9, 10 is made possible by the recesses in the holding elements 19, 20.
  • these push lugs 27, 28 in turn extend continuously over the entire length of the expansion joint 2 or the elastic element 15, but there is also the possibility of arranging several such push lugs 27, 28 side by side in the direction of the length of the expansion joint 2.
  • the thrust lugs 27, 28 can have a rectangular cross section, viewed in the direction of the length of the expansion joint 2, and the cross sections of the groove-like grooves can also have at least one undercut, whereby a better bond is achieved by the synthetic resin or the plastic fills undercuts.
  • the thrust lugs 27, 28 can also have square, polygonal, etc. cross sections.
  • an embodiment variant of the device 1 according to the invention is shown.
  • This embodiment variant is essentially the same as the device 1 2 that after 1 with the exception that in each case one floor element 7, 8 is formed in one piece with one of the base sleepers 9, 10 in each case.
  • these elements of the substructure 6 can be made of structural concrete or the like by casting.
  • the elastic element 15 has a layer density 29 ( 1 ) which is a maximum of 60 mm, in particular a maximum of 50 mm.
  • FIG. 3 shows a detail of an embodiment variant of the device 1. It is possible within the scope of the invention for at least one stabilizing element 30 to be arranged in the elastic element 15.
  • this stabilizing element 30, preferably several such stabilizing elements 30 distributed over the length of the expansion joint 2, can be formed from round steel. Other geometric, rod-shaped shapes are also possible.
  • These stabilizing elements 30 reinforce the elastic element 15 and thus improve its mechanical properties.
  • the stabilizing element 30 or the stabilizing elements 30 are supported on the holding element or elements 19 , 20 . In particular, the support takes place on the two legs 23, 24 of the holding elements 19, 20, as is shown in 3 is shown.
  • Nuts and washers can be arranged on the ends facing the two legs 23, 24 of the holding elements 19, 20 in order to achieve a prestressing of the stabilizing elements 30 between the two legs 23, 24. It is also possible for a compression spring 31, for example a spiral spring, to be fitted over at least some of the stabilizing elements 30 in order to prevent the stabilizing elements from being untied from the casting of the elastic element 15.
  • the stabilizing elements 30 are not embedded directly in the elastic element 15, but these stabilizing elements 30 are guided in a sleeve-shaped element 32, which in each case surrounds a stabilizing element 30 in the radial direction.
  • stabilizing elements 30 it is possible for several stabilizing elements 30 to be arranged in a sleeve-shaped element 32, but this is not the preferred embodiment variant, since this means that volume for forming the elastic element 15 is lost.
  • a spiral hose 33 for example made of plastic, can be provided instead of the sleeve-shaped elements 32 or additionally and surrounding them, which is cast in the elastic element 15 during its manufacture. This also makes it possible to transmit the expansions uniformly to the stabilizing elements 30 .

Description

Die Erfindung betrifft eine Vorrichtung zur Überbrückung einer Dehnfuge im Bereich einer Fahrbahn, umfassend eine Oberbaukonstruktion und eine Unterbaukonstruktion, wobei die Oberbaukonstruktion zumindest ein elastisches Element aufweist und die Unterbaukonstruktion eine Auflage für die Oberbaukonstruktion bildet.The invention relates to a device for bridging an expansion joint in the area of a roadway, comprising a superstructure and a substructure, the superstructure having at least one elastic element and the substructure forming a support for the superstructure.

Derartige Vorrichtungen zur Überbrückung von Dehnfugen zwischen Straßen und Brückenkonstruktionen sind aus dem Stand der Technik bereits bekannt.Such devices for bridging expansion joints between roads and bridge structures are already known from the prior art.

So beschreibt zum Beispiel die CH 691 496 A5 eine Verbindungskonstruktion für Dehnung und/oder Schrumpfung erfahrende Bauteile, die eine elastische Verbindungsschicht umfasst, welche mit an den Bauteilen befestigten, flexiblen Bewehrungsmitteln versehen ist. Die flexiblen Bewehrungsmittel können durch mindestens eine in der Verbindungsschicht eingegossene Feder gebildet sein, deren Enden an den jeweiligen Bauteilen gelagert sind. Die Feder ist insbesondere eine vorgespannte Zugfeder. Des Weiteren kann in der elastischen Verbindungsschicht als flexibles Bewehrungsmittel eine Drahtmatte eingegossen sein. Die elastische Verbindungsschicht ist durch ein dehn- und schrumpffähiges polymerisiertes Bitumen gebildet.For example, describes the CH 691 496 A5 a connection construction for components undergoing expansion and/or contraction, comprising an elastic connection layer, which is provided with flexible reinforcement means attached to the components. The flexible reinforcement means can be formed by at least one spring cast into the connecting layer, the ends of which are mounted on the respective components. The spring is in particular a prestressed tension spring. Furthermore, a wire mat can be cast into the elastic connecting layer as a flexible reinforcement. The elastic connecting layer is formed by an expandable and shrinkable polymerized bitumen.

Die DE 32 25 304 C2 beschreibt eine Dehnungsfugenabdeckung in Fahrbahnen mit einem elastomeren Dehnelement, welches wasserdicht in Ausnehmungen von der Fuge beidseits begrenzenden Randkörpern aus Elastomerbeton aufgenommen ist, die an der Baustelle durch Vergießen entsprechender Ausnehmungen der Fahrbahn so hergestellt sind, dass sie fahrbahneben an die Fahrbahn anschließen. Das Dehnelement besteht aus einem Elastomer das der elastomeren Komponente der Randkörper entspricht. Dieses durch Gießen zwischen den Randkörpern hergestellte Dehnelement verschließt die Fuge zwischen den Randkörpern und haftet an diesen fest an. Der Elastomerbeton der Randkörper weist neben der elastomeren Komponente als Bindemittel eine mineralische Körnung als Zuschlagsstoff auf. Das Elastomer des Dehnelementes bzw. die elastomere Komponente der Randkörper kann durch ein kalthärtendes Polyurethan gebildet sein.the DE 32 25 304 C2 describes an expansion joint cover in roadways with an elastomeric expansion element, which is held watertight in recesses of the joint on both sides delimiting edge bodies made of elastomeric concrete, which are produced at the construction site by casting corresponding recesses in the roadway so that they are flush with the roadway. The stretching element consists of an elastomer which corresponds to the elastomeric component of the edge body. This expansion element, produced by casting between the edge bodies, closes the joint between the edge bodies and adheres firmly to them. In addition to the elastomeric component as a binder, the elastomeric concrete of the edge bodies has mineral grains as an aggregate. The elastomer of the expansion element or the elastomeric component of the edge body can be formed by a cold-curing polyurethane.

Aus der DE 37 39 717 C1 ist eine Vorrichtung zur Überbrückung von Dehnungsfugen in Fahrbahnen bekannt, mit einer die Fuge überbrückenden, extrudierten Matte aus elastomerem Werkstoff, deren zur Fuge parallele Längsränder jeweils in einer nach oben offenen Nut eines randseitigen Halteprofils befestigt sind, wozu an der Mattenunterseite Rippen angeformt sind, die in die Nut formschlüssig eingreifen und diese bis auf einen verbleibenden Verankerungsraum im Wesentlichen ausfüllen. Der Verankerungsraum ist über Gusskanäle bildende Löcher oder Schlitze in der Matte mit der Oberseite verbunden. Die Rippen sind mittels eines die Gusskanäle und den Verankerungsraum füllenden Gusskörper aus einem elastomeren Kunstharz mit dem Halteprofil verbunden. Das Kunstharz kann beispielsweise durch Polyurethan gebildet sein. Die elastomere Matte selbst besteht aus Gummi.From the DE 37 39 717 C1 discloses a device for bridging expansion joints in roadways, with an extruded mat of elastomeric material bridging the joint, whose longitudinal edges parallel to the joint are each fastened in an upwardly open groove of a retaining profile on the edge, for which purpose ribs are formed on the underside of the mat, which engage in the groove in a form-fitting manner and essentially fill it up except for a remaining anchoring space. The anchoring space is connected to the top via sprue forming holes or slots in the mat. The ribs are connected to the holding profile by means of a cast body made of an elastomeric synthetic resin that fills the casting channels and the anchoring space. The synthetic resin can be formed by polyurethane, for example. The elastomeric mat itself is made of rubber.

Die US 6561728 B1 offenbart eine Dehnfugen-Überbrückungsvorrichtung mit einem vor Ort aus einer Mischung aus Polyurethan und Bitumen gegossenen elastischen Element. Zur Angleichung der Oberflächenbeschaffenheit des elastischen Elements an die der angrenzenden Fahrbahnabschnitte kann das Element mit Sand bzw. einem abstumpfendem Material beschichtet sein.the US6561728B1 discloses an expansion joint bridging device having a resilient member cast-in-place from a mixture of polyurethane and bitumen. In order to match the surface finish of the elastic element to that of the adjacent roadway sections, the element can be coated with sand or a blunting material.

Eine weitere Dehnfugen-Überbrückungsvorrichtung mit vor Ort gegossenen elastischen Element und eingebettetem Halteprofil beschreibt die WO99/52981 A1 . CH 691 496 A5 beschreibt eine Vorrichtung zur Überbrückung einer Dehnfuge im Bereich einer Fahrbahn, bei der eine die Dehnfuge überbrückende Verbindungsschicht eingesetzt wird, die aus einem polymerisierten Bitumen ausgeführt ist. GB 2293396 A offenbart einen Fahrbahnübergang, bei dem ein Polyureaenthaltender Harzmörtel als Vergussmasse zur Verankerung von Bewehrungsstrukturen an der jeweiligen Unterkonstruktion zum Einsatz kommt. AU 2002 10047 A4 offenbart eine Methode zur Versiegelung einer Fugenkonstruktion, bei der eine Fugenfüllung sowie die angrenzenden Bauteile mit einer abdichtenden Polyureaschicht besprüht werden.Another expansion joint bridging device with elastic element cast on site and embedded retaining profile is described in US Pat WO99/52981 A1 . CH 691 496 A5 describes a device for bridging an expansion joint in the area of a roadway, in which a connecting layer bridging the expansion joint is used, which is made of a polymerized bitumen. GB 2293396A discloses a roadway transition in which a polyurea-containing resin mortar is used as a grout for anchoring reinforcement structures to the respective substructure. AU2002 10047A4 discloses a method for sealing a joint construction in which a joint filling and the adjacent components are sprayed with a sealing layer of polyurea.

Von der Firma COLAS GmbH, A-8101 Gratkorn, ist unter der Bezeichnung "Thorma® Joint" eine elastische Belagsdehnfuge bekannt, welche in Mattenbauweise aus polymervergütetem Bitumen und einem mineralischen Stützkörper aus Hartgestein gebildet ist.From the company COLAS GmbH, A-8101 Gratkorn, an elastic covering expansion joint is known under the name "Thorma ® Joint", which is formed in mat construction from polymer-improved bitumen and a mineral support body from hard rock.

Aufgabe vorliegender Erfindung ist es, eine verbesserte Vorrichtung zur Überbrückung einer Dehnfuge im Bereich einer Fahrbahn anzugeben. Diese Aufgabe wird durch die in Anspruch 1 angegebene Vorrichtung gelöst. Die erfindungsgemäße Dehnfugen-Überbrückungsvorrichtung zeichnet sich - neben anderen Merkmalen - somit insbesondere dadurch aus, dass in der Oberbaukonstruktion zumindest ein Halteelement angeordnet ist, das zumindest teilweise in dem elastischen Element eingebettet ist. Es wird damit eine Verstärkung des Verbundes zwischen der Oberbaukonstruktion und der Unterbaukonstruktion im vertikalen Bereich der Kontaktfläche zwischen dem elastischen Element der Oberbaukonstruktion und dem angrenzenden Straßenbelag erreicht, sodass diese Kontaktfläche entlastet wird und somit Abschälungen als Folge von Druck- oder Zugspannungen vermindert werden. Im horizontalen Bereich verbessert das zumindest eine Halteelement die Haftung des elastischen Elementes an der Unterbaukonstruktion. Es wird damit also eine verbesserte, mechanische Belastbarkeit der Vorrichtung erreicht, sodass diese eine längere Standzeit aufweist und damit Wartungsarbeiten und die damit verbundenen Kosten reduziert werden können.The object of the present invention is to specify an improved device for bridging an expansion joint in the area of a roadway. This object is achieved by the device specified in claim 1. The expansion joint bridging device according to the invention is characterized—among other features—in particular in that at least one holding element is arranged in the superstructure structure, which is at least partially embedded in the elastic element. In this way, the connection between the superstructure and the substructure is reinforced in the vertical area of the contact surface between the elastic element of the superstructure and the adjacent road surface, so that this contact surface is relieved and peeling as a result of compressive or tensile stresses is reduced. In the horizontal area, the at least one holding element improves the adhesion of the elastic element to the substructure. Improved mechanical resilience of the device is thus achieved, so that it has a longer service life and maintenance work and the costs associated therewith can be reduced.

Indem erfindungsgemäß das bzw. die Halteelement(e) durch ein Winkelprofil bzw. durch Winkelprofile gebildet sind, sind an diesem Halteelement bzw. diesen Haltelementen Schenkel vorhanden, die in das elastische Element reichen und damit die Anhaftung des Halteelementes bzw. der Halteelemente an dem elastischen Element verbessert werden kann, wodurch wiederum höhere Kräfte übertragbar sind.According to the invention, the holding element(s) are formed by an angle profile or angle profiles, legs are present on this holding element or these holding elements, which reach into the elastic element and thus the attachment of the holding element or the holding elements to the elastic Element can be improved, which in turn higher forces can be transmitted.

Dabei ist erfindungsgemäß vorgesehen, dass sich das Halteelement zumindest annähernd über die gesamte Länge der Oberbaukonstruktion durchgehend erstreckt. Mit anderen Worten ausgedrückt, erstreckt sich also das Halteelement zumindest annähernd über die gesamte Länge der Dehnfuge. Es wird damit nicht nur der Aufbau der Vorrichtung an sich vereinfacht - es erfolgt die Herstellung des elastischen Elementes vor Ort durch Gießen, wie dies nachstehend noch näher ausgeführt wird - sondern kann damit eine weitere Verbesserung der von der Dehnfuge aufnehmbaren, anliegenden Kräfte erreicht werden, indem sich diese Kräfte über eine größere Fläche innerhalb des elastischen Elementes verteilen und somit lokale Unterschiede in der Belastung des Halteelementes bzw. der Vorrichtung nicht bzw. vermindert zum Tragen kommen. Bevorzugt kann vorgesehen sein, dass das oder die Halteelement(e) zumindest eine Ausnehmung aufweisen, in die das elastische Element ragt. Es wird damit eine bessere Einbettung des Haltelementes oder der Halteelemente in dem elastischen Element erreicht, wodurch wiederum die mechanische Stabilität der Vorrichtung, insbesondere gegen Abschälungen, verbessert werden kann.It is provided according to the invention that the retaining element extends at least approximately over the entire length of the superstructure. In other words, the holding element extends at least approximately over the entire length of the expansion joint. It won't only the structure of the device itself is simplified - the elastic element is produced on site by casting, as will be explained in more detail below - but a further improvement in the forces that can be absorbed by the expansion joint can be achieved by these forces distributed over a larger area within the elastic element and thus local differences in the load on the holding element or the device do not have an effect or have a reduced effect. Provision can preferably be made for the holding element(s) to have at least one recess into which the elastic element projects. Better embedding of the holding element or the holding elements in the elastic element is thus achieved, which in turn can improve the mechanical stability of the device, in particular against peeling off.

In der erfindungsgemäßen Ausführung der Vorrichtung ist das elastische Element der Oberbaukonstruktion aus einem gießfähigen Kunstharz bzw. Kunststoff gebildet, indem es zumindest teilweise aus einem Polyharnstoff- bzw. einem Polyureasystem besteht. Das Polyharnstoff- bzw. das Polyureasystem weist dabei eine Härte nach Shore A von 55 bis 85 auf, die Zugfestigkeit des Polyharnstoff- bzw. des Polyureasystems nach DIN 53504 beträgt zwischen 10 und 30 N/mm2. Weiterhin weist das Polyharnstoff- bzw. das Polyureasystem eine Dehnung nach DIN 53504 zwischen 400 und 1200 % auf. Die Viskosität des Polyharnstoff- bzw. des Polyureasystems bei 23 °C beträgt zwischen 4000 und 6000 mPas. Es wird damit einerseits die einfache Herstellung der Vorrichtung auf der Baustelle verbessert, andererseits bleibt die Befahrbarkeit, anders als bei bituminösen Systemen, auch bei hohen klimatischen Temperaturen, zum Beispiel bei direkter Sonneneinstrahlung, bei denen bituminöse Systeme bereits erweichen, erhalten. Zudem ist ein Polyharnstoff- bzw. ein Polyureasystem verschleißfester als die im Stand der Technik bekannten Systeme auf Basis von Bitumen. Insbesondere durch die Verwendung eines Polyharnstoff- bzw. eines Polyureasystems werden auch die Spurrillenbildung, Verdrückungen und das Auslaufen der Oberfläche besser verhindert. Das Polyharnstoff- bzw. das Polyureasystem kann in einem weiten Temperaturbereich kalt eingebaut werden. Herkömmliche bituminöse Systeme müssen heiß eingebaut werden, was mit erheblichen Energieaufwand und hoher Lärmemission verbunden ist. Weiters können auch größere Dehnwege als bisher bewältigt, das heißt überbrückt werden.In the embodiment of the device according to the invention, the elastic element of the superstructure is formed from a castable synthetic resin or plastic, in that it consists at least partially of a polyurea or polyurea system. The polyurea or polyurea system has a Shore A hardness of 55 to 85, the tensile strength of the polyurea or polyurea system according to DIN 53504 is between 10 and 30 N/mm2. Furthermore, the polyurea or polyurea system has an elongation according to DIN 53504 between 400 and 1200%. The viscosity of the polyurea or polyurea system at 23 °C is between 4000 and 6000 mPas. On the one hand, this improves the simple manufacture of the device on the construction site, and on the other hand, unlike with bituminous systems, trafficability is maintained even at high climatic temperatures, for example in direct sunlight, at which bituminous systems already soften. In addition, a polyurea or polyurea system is more wear-resistant than the bitumen-based systems known in the prior art. In particular, the use of a polyurea or a polyurea system also better prevents the formation of ruts, crushing and surface leakage. The polyurea or polyurea system can be installed cold over a wide temperature range. Conventional bituminous systems have to be installed hot, which involves considerable energy consumption and high noise emissions. Furthermore, larger expansion distances than before can also be mastered, i.e. bridged.

Durch die Verwendung von einem Polyharnstoff- bzw. einem Polyureasystem zur Herstellung des elastischen Elementes ist es möglich, dass die Schichtdicke des elastischen Elementes maximal 60 mm beträgt. Damit ist dieses elastische Element im Gegensatz zu den am Markt befindlichen Asphaltdehnfugen eher dünn. Diese Verringerung der Schichtdicke hat den Vorteil, dass die Verformungskräfte geringer sind. Die Verformungskräfte, die bei Längenänderungen der Tragwerke auftreten (Zug/Druck), bewirken einerseits eine Belastung der angrenzenden Bauteile, wie Widerlager, Tragwerke, Brückenlager, andererseits innere Spannungen im Werkstoff des elastischen Elementes. Die verminderte Schichtdicke des elastischen Elementes erlaubt es daher, die angrenzenden und nachfolgenden Bauteile des Bauwerks kleiner und wirtschaftlicher herzustellen.By using a polyurea or a polyurea system to produce the elastic element, it is possible for the layer thickness of the elastic element to be a maximum of 60 mm. This elastic element is therefore rather thin in contrast to the asphalt expansion joints on the market. This reduction in layer thickness has the advantage that the deformation forces are lower. The deformation forces that occur when the length of the supporting structure changes (tension/compression) cause a load on the adjacent components such as abutments, supporting structures, bridge bearings on the one hand, and internal stresses in the material of the elastic element on the other. The reduced layer thickness of the elastic element therefore allows the adjacent and subsequent components of the structure to be made smaller and more economically.

Die Unterbaukonstruktion kann zumindest teilweise aus einem Werkstoff aus der Gruppe, umfassend Epoxydharze, Polymerbeton, Beton, Metalle, wie zum Beispiel Stahl, bestehen. Es wird damit eine kostengünstig herstellbare Unterbaukonstruktion zur Verfügung gestellt, die die erforderlichen starren Eigenschaften zur Unterstützung der Oberbaukonstruktion, das heißt insbesondere des elastischen Elementes, zur Verfügung stellt.The substructure can at least partially consist of a material from the group comprising epoxy resins, polymer concrete, concrete, metals such as steel. A substructure structure that can be produced at low cost is thus made available, which provides the necessary rigid properties for supporting the superstructure structure, that is to say in particular the elastic element.

Es ist bevorzugt, wenn das oder die Halteelement(e) mit zumindest einem Verbundanker mit der Unterbaukonstruktion verbunden ist bzw. sind. Durch diese Ausführungsvariante der Erfindung wird die Belastbarkeit der Vorrichtung weiter erhöht, indem über die Befestigung des Halteelementes bzw. der Halteelemente an der Unterbaukonstruktion, also dem Tragwerk, Abschälungen im Bereich des elastischen Elementes besser verhindert werden können. Weiters wird damit, nachdem das Halteelement bzw. die Halteelemente mit ihrer Oberseite in das elastische Element hineinragen und somit auch der oder die Verbundanker mit seinem bzw. ihrem einen Ende in das elastische Element hineinragt bzw. hineinragen, eine bessere Verbundwirkung erreicht, die zur Abtragung der an der Haftfläche zwischen der Oberbaukonstruktion und der Unterbaukonstruktion auftretenden Druck- bzw. Zugspannungen beiträgt.It is preferred if the holding element(s) is/are connected to the substructure with at least one chemical anchor. This embodiment variant of the invention further increases the load-bearing capacity of the device in that peeling off in the area of the elastic element can be better prevented by fastening the holding element or the holding elements to the substructure, ie the supporting structure. Furthermore, after the holding element or the holding elements protrude with their upper side into the elastic element and thus also the shear connector or anchors protrude or protrude with one end into the elastic element, a better composite effect is achieved, which leads to removal the compressive and tensile stresses occurring on the adhesive surface between the superstructure and the substructure.

Gemäß einer weiteren Ausführungsvariante ist vorgesehen, dass an dem elastischen Element an einer in Richtung auf die Unterbaukonstruktion weisenden Unterseite zumindest eine, sich bevorzugt über zumindest annährend die gesamte Länge der Oberbaukonstruktion durchgehend erstreckende, Schubnase ausgebildet ist. Es wird damit einerseits eine mechanische Verbindung zwischen dem elastischen Element und der Unterbaukonstruktion geschaffen, wodurch die Kontaktfläche zwischen der Oberbaukonstruktion, das heißt dem elastischen Element, und der Unterbaukonstruktion von Schubspannungen entlastet wird. Andererseits wird damit diese Kontaktfläche vergrößert, womit eine Reduktion der Haftspannungen erreicht werden kann.According to a further embodiment variant it is provided that at least one sliding lug is formed on the elastic element on an underside pointing in the direction of the substructure, preferably extending continuously over at least approximately the entire length of the superstructure. On the one hand, a mechanical connection is thus created between the elastic element and the substructure, as a result of which the contact surface between the superstructure, ie the elastic element, and the substructure is relieved of shear stresses. On the other hand, this enlarges the contact area, which means that a reduction in the adhesive stresses can be achieved.

In dem elastischen Element kann zumindest ein Stabilisierungselement angeordnet sein. Es wird damit erreicht, dass das elastische Element Dehn- bzw. Verschiebewege aufnehmen kann, die wesentlich größer sind als die einfacher, elastischer Belagsdehnfugen aus bituminösen Werkstoffen.At least one stabilizing element can be arranged in the elastic element. This means that the elastic element can absorb expansion or displacement paths that are significantly larger than those of simple, elastic covering expansion joints made of bituminous materials.

Zusätzlich kann das Stabilisierungselement bzw. können die Stabilisierungselemente gemäß einer weiteren Ausführungsvariante der Vorrichtung ein hülsenförmiges Element bzw. hül-senförmige Elemente aufweisen, in dem das Stabilisierungselement oder in denen die Stabilisierungselemente angeordnet sind. Das hülsenförmige Element bzw. die hülsenförmigen Elemente wirken als Schubhülsen, in denen das Stabilisierungselement bzw. die Stabilisierungselemente geführt sind und in denen sich diese bewegen können, wodurch die Wirkung der Stabilisierungselemente als Bewehrung für das elastische Element der Oberbaukonstruktion verbessert werden kann.In addition, according to a further embodiment of the device, the stabilizing element or elements can have a sleeve-shaped element or elements, in which the stabilizing element or in which the stabilizing elements are arranged. The sleeve-shaped element or elements act as thrust sleeves in which the stabilizing element or elements are guided and in which they can move, thereby improving the effect of the stabilizing elements as reinforcement for the elastic element of the superstructure can be.

Bevorzugt stützt sich das oder stützen sich die Stabilisierungselement(e) an dem Haltelement oder an den Halteelementen ab, wodurch die Stabilisierung der Dehnfuge über diese Stabilisierungselemente und die Halteelemente verbessert werden kann.The stabilizing element(s) is/are preferably supported on the holding element or on the holding elements, as a result of which the stabilization of the expansion joint can be improved via these stabilizing elements and the holding elements.

Dabei ist es von Vorteil, wenn sich das oder die Stabilisierungselement(e) zwischen den nach oben abstehenden Schenkeln der Winkelprofile, das heißt in das elastische Element hineinragenden Schenkel der Winkelprofile, erstreckt, insbesondere an diesen Schenkeln anliegt, um eine weitere Verbesserung der Stabilisierungsfunktion durch das Zusammenwirken der Stabilisierungselemente mit dem Halteelement bzw. den Halteelementen zu erreichen.It is advantageous if the stabilizing element(s) extends between the upwardly protruding legs of the angle profiles, i.e. the legs of the angle profiles projecting into the elastic element, and in particular rests against these legs in order to further improve the stabilization function to achieve the interaction of the stabilizing elements with the holding element or the holding elements.

Es kann weiters vorgesehen sein, dass das oder die Stabilisierungselement(e) eine Druckfeder aufweist oder aufweisen, um ein Ausknüpfen der Stabilisierungselemente aus dem elastischen Element zu verhindern.Provision can furthermore be made for the stabilizing element(s) to have or have a compression spring in order to prevent the stabilizing elements from being untied from the elastic element.

Gemäß einer weiteren Ausführungsvariante ist vorgesehen, dass das oder die Stabilisierungselement(e) oder das oder die hülsenförmigen Element(e) zumindest teilweise von einem Spiralschlauch umgeben sind. Dieser ist insbesondere in dem elastischen Element eingegossen und bewirkt, dass Dehnungen gleichmäßig auf das Stabilisierungselement bzw. die Stabilisierungselemente übertragen werden. Zudem wird damit die Reibung zum elastischen Element, also beispielsweise dem Polyurethanverguss, verringert bzw. vermieden.According to a further embodiment, it is provided that the stabilizing element(s) or the sleeve-shaped element(s) are at least partially surrounded by a spiral hose. This is cast in particular in the elastic element and causes expansions to be evenly transmitted to the stabilization element or elements. In addition, this reduces or avoids friction with the elastic element, for example the polyurethane casting.

Zum besseren Verständnis der Erfindung wird diese anhand der nachfolgenden Figuren näher erläutert.For a better understanding of the invention, it is explained in more detail with reference to the following figures.

Es zeigen jeweils in schematisch vereinfachter Darstellung:

Fig. 1
eine erste Ausführungsvariante einer erfindungsgemäßen Vorrichtung in Seitenansicht geschnitten;
Fig. 2
eine andere Ausführungsvariante der Vorrichtung in Seitenansicht geschnitten;
Fig. 3
ein Detail aus einer erfindungsgemäßen Vorrichtung im Bereich eines Stabilisierungselementes.
They each show in a schematically simplified representation:
1
a first embodiment of a device according to the invention in side view;
2
another embodiment variant of the device in side view;
3
a detail of a device according to the invention in the area of a stabilizing element.

Einführend sei festgehalten, dass in den unterschiedlich beschriebenen Ausführungsformen gleiche Teile mit gleichen Bezugszeichen bzw. gleichen Bauteilbezeichnungen versehen werden, wobei die in der gesamten Beschreibung enthaltenen Offenbarungen sinngemäß auf gleiche Teile mit gleichen Bezugszeichen bzw. gleichen Bauteilbezeichnungen übertragen werden können. Auch sind die in der Beschreibung gewählten Lageangaben, wie z.B. oben, unten, seitlich usw. auf die unmittelbar beschriebene sowie dargestellte Figur bezogen und sind bei einer Lageänderung sinngemäß auf die neue Lage zu übertragen.As an introduction, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numbers or the same component designations, it being possible for the disclosures contained throughout the description to be applied to the same parts with the same reference numbers or the same component designations. The position information selected in the description, such as top, bottom, side, etc., refers to the figure directly described and shown and must be transferred to the new position in the event of a change of position.

Fig. 1 zeigt eine Vorrichtung 1 zum Überbrücken einer Dehnfuge 2 zwischen einer Fahrbahn 3 und einer an diese anschließende Fahrbahn 4 einer Brücke, insbesondere einer Straßenbrücke. 1 shows a device 1 for bridging an expansion joint 2 between a carriageway 3 and an adjoining carriageway 4 of a bridge, in particular a road bridge.

Die Vorrichtung 1 weist eine Oberbaukonstruktion 5 und eine Unterbaukonstruktion 6 auf.The device 1 has a superstructure 5 and a substructure 6 .

Die Unterbaukonstruktion 6 umfasst bei dieser Ausführungsvariante zwei voneinander beabstandete Bodenelemente 7, 8 die bis in den Bereich der Dehnfuge 2 reichen. Auf diesen Bodenelementen 7, 8 ist jeweils eine Unterbausschwelle 9, 10 angeordnet, insbesondere mit den Bodenelementen 7 bzw. 8 verbunden.In this variant, the substructure 6 comprises two spaced-apart floor elements 7 , 8 which extend into the area of the expansion joint 2 . A substructure sleeper 9, 10 is arranged on each of these floor elements 7, 8, in particular connected to the floor elements 7 and 8, respectively.

Die Bodenelemente 7, 8 können beispielsweise aus einem Beton, wie er im Straßenbau verwendet wird, bestehen.The floor elements 7, 8 can consist, for example, of a concrete such as is used in road construction.

Die beiden Unterbauschwellen 9, 10 sind zwischen den Fahrbahnen 3, 4 in der Dehnfuge 2 angeordnet und können insbesondere aus einem Epoxydharz oder einem Polymerbeton oder einem anderen, geeigneten, starren Baustoff hergestellt sein. Insbesondere ist es auch möglich, diese beiden Unterbauschwellen 9, 10 vor Ort auf der Baustelle herzustellen, sofern nicht bereits vorgefertigte Elemente hierfür eingesetzt werden.The two underbody sleepers 9, 10 are arranged between the roadways 3, 4 in the expansion joint 2 and can be made in particular of an epoxy resin or a polymer concrete or another suitable, rigid building material. In particular, it is also possible to produce these two substructure sleepers 9, 10 on site, provided that prefabricated elements are not used for this purpose.

Die Unterbaukonstruktion 6 ist bezogen auf die Oberbaukonstruktion 5 starr ausgeführt. Mit dem Begriff "starr" im Sinne der Erfindung ist gemeint, dass diese Unterbaukonstruktion 6 bzw. deren Bestandteile mit Ausnahme von Wärmedehnungen bzw. Schrumpfungen keine weiteren Dimensionsänderungen während des Betriebes der Vorrichtung 1 erfahren.The substructure 6 is rigid in relation to the superstructure 5 . The term “rigid” in the context of the invention means that this substructure 6 or its components, with the exception of thermal expansion or contraction, do not experience any further dimensional changes during operation of the device 1.

Die beiden Unterbauschwellen 9, 10 weisen bevorzugt eine Breite 11, 12 auf, die so bemessen ist, dass ein durch die beabstandete Anordnung der beiden Bodenelemente 7, 8 zueinander gebildeter Spalt nicht eingeschnürt wird, also bevorzugt die aufeinander zuweisenden Stirnflächen der Unterbauschwellen 9, 10 jeweils fluchtend mit den jeweiligen Stirnflächen der beiden aufeinander zuweisenden Bodenelemente 7, 8 angeordnet sind, wie dies in Fig. 1 dargestellt ist.The two underbody sleepers 9, 10 preferably have a width 11, 12 that is dimensioned such that a gap formed by the spaced arrangement of the two floor elements 7, 8 relative to one another is not narrowed, i.e. preferably the end faces of the underbody sleepers 9, 10 that face one another are each arranged flush with the respective end faces of the two floor elements 7, 8 facing one another, as is shown in 1 is shown.

Im Anschlussbereich an die Dehnfuge 2 und teilweise in die Dehnfuge 2 reichend, ist zwischen den Fahrbahnen 3, 4 und den Bodenelementen 7, 8 jeweils ein Dichtelement 13, 14, beispielsweise eine Dichtfolie, wie diese aus dem Stand der Technik bekannt ist, angeordnet.In the connection area to the expansion joint 2 and partially reaching into the expansion joint 2, a sealing element 13, 14, for example a sealing foil, as is known from the prior art, is arranged between the lanes 3, 4 and the floor elements 7, 8.

Die Oberbaukonstruktion 5 umfasst ein elastisches Element 15, welches sich zwischen den beiden Fahrbahnen 3, 4 und die Dehnfuge 2 überbrückend erstreckt. Insbesondere ist dieses elastische Element an der Oberseite fluchtend mit den Oberflächen der Fahrbahnen 3, 4 ausgebildet, sodass also im Bereich der Dehnfuge 2 fahrbahnseitig keine bzw. keine wesentliche, den Fahrkomfort beeinflussende Erhöhung oder Vertiefung vorhanden ist.The superstructure 5 comprises an elastic element 15 which extends between the two roadways 3, 4 and the expansion joint 2 in a bridging manner. In particular, this elastic element is flush with the surfaces of the roadways 3, 4 on the upper side, so that there is no or no significant elevation or depression in the area of the expansion joint 2 on the roadway side that affects driving comfort.

Das elastische Element 15 stützt sich auf den Unterbauschwellen 9, 10 ab. Nachdem das elastische Element 15 in Gussbauweise aus einem Kunstharz bzw. Kunststoff direkt auf der Baustelle, hergestellt wird, besteht die Möglichkeit, dass sich das Material des elastischen Elementes 15 zumindest in jenen Bereichen, in denen dieses elastische Element 15 direkt an den Unterbauschwellen 9, 10 unter Ausbildung einer Kontaktfläche 16 anliegt, verbindet.The elastic element 15 is supported on the substructure sleepers 9, 10. After the elastic member 15 is cast from a synthetic resin or Plastic is produced directly on the construction site, there is the possibility that the material of the elastic element 15 connects at least in those areas in which this elastic element 15 rests directly on the substructure sleepers 9, 10, forming a contact surface 16.

Für das elastische Element 15 wird ein kalthärtendes, giessbares Kunstharz bzw. ein kalthärtender, giessbarer Kunststoff verwendet, nämlich ein Polyharnstoff- bzw. ein Polyureasystem, um das elastische Element 15 direkt auf der Baustelle durch Gießen herstellen zu können. Als Polyharnstoff- bzw. Polyureasystem wird ein Polyharnstoff- bzw. ein Polyureasystem mit einer der Verwendung angepassten Härte verwendet, so dass einerseits die Verformung mit möglichst geringem Widerstand ermöglicht wird und andererseits die Belastungen aus dem Verkehr möglichst geringe Verformungen zur Folge haben. Beispielsweise kann ein 2K-Polyureasystem verwendet werden. Das Polyharnstoff- bzw. das Polyureasystem weist eine Härte nach Shore A von 55 bis 85 auf. Die Zugfestigkeit des Polyharnstoff- bzw. des Polyureasystems nach DIN 53504 beträgt zwischen 10 und 30 N/mm2. Des Weiteren weist das Polyharnstoff- bzw. das Polyureasystem eine Dehnung nach DIN 53504 zwischen 400 und 1200 % auf. Insbesondere ist es von Vorteil, wenn ein Polyharnstoff - bzw. ein Polyureasystem mit thixotropen Eigenschaften verwendet wird. Die Viskosität des Polyharnstoff - bzw. des Polyureasystems beträgt bei 23 °C zwischen 4000 und 6000 mPas.A cold-curing, castable synthetic resin or a cold-curing, castable plastic is used for the elastic element 15, namely a polyurea or a polyurea system, in order to be able to produce the elastic element 15 directly on the construction site by casting. A polyurea or polyurea system with a hardness adapted to the application is used as the polyurea or polyurea system, so that on the one hand deformation is possible with the lowest possible resistance and on the other hand the loads from traffic result in the lowest possible deformations. For example, a 2K polyurea system can be used. The polyurea or polyurea system has a Shore A hardness of 55 to 85. The tensile strength of the polyurea or polyurea system according to DIN 53504 is between 10 and 30 N/mm2. Furthermore, the polyurea or polyurea system has an elongation according to DIN 53504 between 400 and 1200%. In particular, it is advantageous if a polyurea or a polyurea system with thixotropic properties is used. The viscosity of the polyurea or polyurea system is between 4000 and 6000 mPas at 23 °C.

Zur Verbesserung der Haftfähigkeit kann vorab auch ein Haftvermittler, ein so genannter Primer, aufgetragen werden.To improve adhesion, an adhesion promoter, a so-called primer, can also be applied beforehand.

Im Bereich des Spaltes der in horizontaler Richtung zwischen den Unterbauschwellen 9, 10 bzw. Bodenelementen 7, 8 ausgebildet wird, ist auf den Unterbauschwellen 9, 10 ein Abdeckelement 17 angeordnet, welches diesen Spalt insbesondere feuchtigkeitsdicht abdeckt. Dieses Abdeckelement 17 kann beispielsweise aus einem Metall oder Kunststoffstreifen bestehen. Bevorzugt weist das Abdeckelement 17 ein Zentrierelement 18 für den genaueren Einbau dieses Abdeckelementes 17 bzw. zur Erhöhung der Betriebssicherheit der Vorrichtung 1 auf, wobei das Zentrierelement 18 in den Spalt zwischen den beiden Bodenelementen 7, 8 bzw. den Unterbauschwellen 9, 10 ragt.In the area of the gap formed in the horizontal direction between the substructure sleepers 9, 10 or floor elements 7, 8, a cover element 17 is arranged on the substructure sleepers 9, 10, which covers this gap in particular in a moisture-tight manner. This cover element 17 can consist of a metal or plastic strip, for example. The cover element 17 preferably has a centering element 18 for more precise installation of this cover element 17 or to increase the operational reliability of the device 1, with the centering element 18 protruding into the gap between the two floor elements 7, 8 or the substructure sleepers 9, 10.

Zur Verbesserung des Verbundes zwischen dem elastischen Element 15 und den Unterbauschwellen 9, 10 bei der Ausführungsvariante nach Fig. 1, sind zwei Halteelemente 19, 20 im Bereich der Kontaktfläche 16 angeordnet. Damit werden die beiden Halteelemente 19, 20 zumindest an der Oberfläche, welche in Richtung auf das elastische Element 15 ragt, in diesem eingebettet.To improve the connection between the elastic element 15 and the substructure sleepers 9, 10 in the embodiment according to 1 , Two holding elements 19, 20 are arranged in the area of the contact surface 16. The two holding elements 19, 20 are thus embedded in the elastic element 15, at least on the surface which protrudes in the direction of the latter.

Die Halteelemente 19, 20 sind als Winkelelemente mit einer Basis 21, 22 sowie von der Basis 21, 22 zumindest annähernd rechtwinkelig nach oben in das elastische Element 15 und in diesem eingebettet, abstehenden Schenkeln 23, 24. Die beiden Schenkeln 23, 24 dabei, wie dargestellt, bevorzugt jeweils den Fahrbahnen 3, 4 zugewandt.The holding elements 19, 20 are as angle elements with a base 21, 22 and from the base 21, 22 at least approximately at right angles upwards in the elastic element 15 and embedded in it, protruding legs 23, 24. The two legs 23, 24 here, as shown, preferably facing the lanes 3, 4 in each case.

Vorzugsweise bestehen die Halteelemente 19, 20 aus einem Metall, beispielsweise Stahl.The holding elements 19, 20 are preferably made of a metal, for example steel.

Zur Verbesserung des Verbundes zwischen dem elastischen Element 15 und den Haltelementen 19, 20 können letztere zumindest eine Ausnehmung aufweisen, bevorzugt sind diese als Lochblech bzw. gelochtes Blech ausgeführt, um damit während der Herstellung des elastischen Elementes 15 aus dem gießfähigen, härtbaren Kunstharz bzw. dem Kunststoff dieses bzw. diesen in diese Ausnehmungen eintreten zu lassen.To improve the connection between the elastic element 15 and the holding elements 19, 20, the latter can have at least one recess; these are preferably designed as perforated sheet metal or perforated sheet metal, so that during the production of the elastic element 15 from the castable, hardenable synthetic resin or to allow the plastic to enter these recesses.

Die beiden Halteelemente 19, 20 erstrecken sich über die gesamte Länge der Dehnfuge 2, welche sich in Richtung der Blickrichtung auf die Ausführungsvariante nach Fig. 1 erstreckt. Es besteht allerdings auch die Möglichkeit, dass in Richtung der Länge mehrere einzelne Halteelemente 19, 20 nebeneinander angeordnet werden. Daneben besteht auch die Möglichkeit, dass nur ein einziges Halteelement 19, das auf beiden Unterbauschwellen 9, 10 aufliegt und den Spalt überbrückend angeordnet ist, verwendet wird. In diesem Fall ist es von Vorteil, wenn dieses einzige Halteelement 19 zumindest einen elastischen Bereich, beispielsweise im Bereich des Spaltes, zwischen den Unterbauschwellen 9, 10 bzw. den Bodenelementen 7, 8 aufweist, um damit die Dehnung bzw. die Schrumpfung der Vorrichtung 1 aufgrund der durch Temperaturänderung bedingten Dimensionsänderungen der Fahrbahnen 3, 4 bzw. der Straße und der Brücke zu ermöglichen. Dazu kann dieses Halteelement 19 mehrteilig ausgebildet sein mit einem elastischen Zwischenstück bzw. besteht auch die Möglichkeit durch geometrische Ausbildung des Halteelementes 19 diese Dehnung bzw. Schrumpfung zu ermöglichen. Dazu kann dieses Halteelement 19, insbesondere im Bereich des Spaltes zick-zack-förmig bzw. ziehharmonikaförmig etc. ausgebildet sein.The two holding elements 19, 20 extend over the entire length of the expansion joint 2, which extends in the direction of the viewing direction of the embodiment variant 1 extends. However, there is also the possibility that several individual holding elements 19, 20 are arranged next to one another in the direction of the length. In addition, there is also the possibility that only a single holding element 19, which rests on both substructure sleepers 9, 10 and is arranged to bridge the gap, is used. In this case, it is advantageous if this single holding element 19 has at least one elastic area, for example in the area of the gap, between the substructure sleepers 9, 10 or the floor elements 7, 8, in order to compensate for the expansion or shrinkage of the device 1 to allow due to the temperature change caused by dimensional changes in the lanes 3, 4 and the road and the bridge. For this purpose, this holding element 19 can be designed in several parts with an elastic intermediate piece or there is also the possibility of enabling this expansion or contraction by geometric design of the holding element 19 . For this purpose, this holding element 19 can be embodied in a zigzag shape or in the shape of an accordion, etc., in particular in the region of the gap.

Um den Verbund zwischen den Halteelementen 19, 20 und der Unterbaukonstruktion 6 zu verbessern, können die Halteelemente 19, 20 mit jeweils zumindest einem Verbundanker 25, 26 versehen sein, wobei sich diese Verbundanker 25, 26 aus dem elastischen Element 15 bis zumindest in den Bereich der Unterbauschwellen 9 bzw. 10, bevorzugt bis in den Bereich der Bodenelemente 7 bzw. 8, wie in Fig. 1 dargestellt, ragen. Insbesondere kann dieser Verbundanker 25, 26 mit einem entsprechenden Dübel in der Unterbauschwelle 9, 10 und/oder der dem Bodenelement 7, 8 gehalten sein. Es besteht auch die Möglichkeit, dass diese Verbundanker 25, 26 bereits mit dem Bodenelement 7, 8 einbetoniert werden bzw. in die Unterbauschwellen 9, 10 eingegossen werden. Die Einbettung der oberen in das elastische Element 15 ragenden Enden der Verbundanker im elastischen Element 15 erfolgt während der Herstellung des elastischen Elementes 15 aus dem Kunstharz bzw. dem Kunststoff durch das Vergießen der Dehnfuge 2.In order to improve the connection between the holding elements 19, 20 and the substructure 6, the holding elements 19, 20 can each be provided with at least one shear connector 25, 26, with these shear connectors 25, 26 being made of the elastic element 15 at least in the area of the substructure sleepers 9 or 10, preferably up to the area of the floor elements 7 or 8, as in 1 shown, protrude. In particular, this shear connector 25, 26 can be held in the substructure sleeper 9, 10 and/or the floor element 7, 8 with a corresponding dowel. There is also the possibility that these chemical anchors 25, 26 are already concreted in with the floor element 7, 8 or cast into the substructure sleepers 9, 10. The embedding of the upper ends of the chemical anchors that protrude into the elastic element 15 takes place in the elastic element 15 during the production of the elastic element 15 from the synthetic resin or the plastic by casting the expansion joint 2.

Obwohl es möglich ist, dass nur jeweils ein Verbundanker 25, 26 pro Seite der Dehnfuge 2 angeordnet ist, ist vorzugsweise im Rahmen der Erfindung vorgesehen, dass in Längsrichtung der Dehnfuge 2 mehrere derartige Verbundanker 25, 26 nebeneinander und bevorzugt in regelmäßigen Abständen zueinander angeordnet werden.Although it is possible that only one shear connector 25, 26 is arranged on each side of the expansion joint 2 is preferably provided within the scope of the invention that in the longitudinal direction of the expansion joint 2 several such shear connectors 25, 26 are arranged side by side and preferably at regular intervals from one another.

In der Ausführungsvariante, bei der mehrere Halteelemente 19, 20 in Richtung der Längserstreckung der Dehnfuge 2 nebeneinander angeordnet sind, weist bevorzugt jedes dieser Halteelemente 19, 20 einen eigenen Verbundanker 25, 26 auf.In the embodiment variant in which several holding elements 19, 20 are arranged next to one another in the direction of the longitudinal extension of the expansion joint 2, each of these holding elements 19, 20 preferably has its own shear connector 25, 26.

Die Verbundanker 25, 26 bestehen vorzugsweise aus einem Metall, insbesondere aus Stahl.The chemical anchors 25, 26 are preferably made of a metal, in particular steel.

Gemäß einer weiteren Ausführungsvariante der Erfindung ist vorgesehen, dass das elastische Element 15 jeweils beidseits der Dehnfuge 2, also auf jeder Seite im Bereich neben dem ausgebildeten Spaltes zwischen den Unterbauschwellen 9, 10 bzw. Bodenelementen 7, 8, zumindest eine Schubnase 27 auf. Diese beiden Schubnasen 27, 28 werden während der Herstellung des elastischen Elementes 15 durch das Ausgießen der Dehnfuge 2 mit dem Kunstharz bzw. dem Kunststoff hergestellt, wozu in den Unterbauschwellen 9, 10 entsprechende nutartige Rillen vorgesehen sind, um das Austreten bzw. Eintreten des Kunstharzes bzw. des Kunststoffes in diese Nuten zu ermöglichen. Es wird damit ermöglicht, dass diese Schubnasen 27, 28 einstückig mit dem elastischen Element 15 hergestellt werden. Das Eintreten des Kunstharzes bzw. des Kunststoffes in die Nuten der Unterbauschwellen 9, 10 wird durch die Ausnehmungen in den Haltelementen 19, 20 ermöglich.According to a further embodiment variant of the invention, it is provided that the elastic element 15 has at least one sliding lug 27 on both sides of the expansion joint 2, i.e. on each side in the area next to the gap formed between the substructure sleepers 9, 10 or floor elements 7, 8. These two thrust lugs 27, 28 are produced during the production of the elastic element 15 by pouring the expansion joint 2 with the synthetic resin or the plastic, for which purpose corresponding groove-like grooves are provided in the substructure sleepers 9, 10 to prevent the synthetic resin from escaping or entering or to allow the plastic in these grooves. It is thus made possible for these thrust lugs 27 , 28 to be produced in one piece with the elastic element 15 . The entry of the synthetic resin or plastic into the grooves of the underbody sleepers 9, 10 is made possible by the recesses in the holding elements 19, 20.

Es besteht im Rahmen der Erfindung aber selbstverständlich auch die Möglichkeit, dass in Fahrtrichtung mehrere derartige Schubnasen 27, 28 hintereinander innerhalb einer der Unterbauschwellen 9, 10 angeordnet sind.Within the scope of the invention, however, there is of course also the possibility that several such thrust noses 27, 28 are arranged one behind the other within one of the substructure sleepers 9, 10 in the direction of travel.

Bevorzugt erstrecken sich diese Schubnasen 27, 28 wiederum durchgehend über die gesamt Länge der Dehnfuge 2 bzw. des elastischen Elementes 15, es besteht jedoch auch die Möglichkeit, mehrere derartige Schubnasen 27, 28 nebeneinander in Richtung der Länge der Dehnfuge 2 anzuordnen.Preferably, these push lugs 27, 28 in turn extend continuously over the entire length of the expansion joint 2 or the elastic element 15, but there is also the possibility of arranging several such push lugs 27, 28 side by side in the direction of the length of the expansion joint 2.

Des Weiteren können die Schubnasen 27, 28 einen rechteckigen Querschnitt, in Richtung der Länge der Dehnfuge 2 betrachtet, aufweisen, ebenso können die Querschnitte der nutartigen Rillen zumindest eine Hinterschneidung aufweisen, wodurch ein besserer Verbund erreicht wird, indem das Kunstharz bzw. der Kunststoff diese Hinterschneidungen ausfüllt. Die Schubnasen 27, 28 können aber auch quadratische, polygonale, etc. Querschnitte aufweisen.Furthermore, the thrust lugs 27, 28 can have a rectangular cross section, viewed in the direction of the length of the expansion joint 2, and the cross sections of the groove-like grooves can also have at least one undercut, whereby a better bond is achieved by the synthetic resin or the plastic fills undercuts. However, the thrust lugs 27, 28 can also have square, polygonal, etc. cross sections.

In Fig. 2 ist eine Ausführungsvariante der erfindungsgemäßen Vorrichtung 1 gezeigt. Im Wesentlichen gleicht diese Ausführungsvariante der Vorrichtung 1 nach Fig. 2 jener nach Fig. 1 mit der Ausnahme, dass jeweils ein Bodenelement 7, 8 mit jeweils einer der Unterbauschwellen 9, 10 einstückig ausgebildet ist. Beispielsweise können diese Elemente der Unterbaukonstruktion 6 aus einem Konstruktionsbeton oder dergleichen durch Gießen hergestellt sein.In 2 an embodiment variant of the device 1 according to the invention is shown. This embodiment variant is essentially the same as the device 1 2 that after 1 with the exception that in each case one floor element 7, 8 is formed in one piece with one of the base sleepers 9, 10 in each case. For example, these elements of the substructure 6 can be made of structural concrete or the like by casting.

Bezüglich der weiteren Details dieser Ausführungsvariante der Erfindung sei auf die Ausführungen zu Fig. 1 verwiesen, um unnötige Wiederholungen zu vermeiden.With regard to the further details of this embodiment variant of the invention, refer to the statements 1 referenced to avoid unnecessary repetition.

Vorzugsweise weist das elastische Element 15 eine Schichtdichte 29 (Fig. 1) auf, die maximal 60 mm, insbesondere maximal 50 mm, beträgt.Preferably, the elastic element 15 has a layer density 29 ( 1 ) which is a maximum of 60 mm, in particular a maximum of 50 mm.

Fig. 3 zeigt ein Detail einer Ausführungsvariante der Vorrichtung 1. Es ist im Rahmen der Erfindung möglich, dass in dem elastischen Element 15 zumindest ein Stabilisierungselement 30 angeordnet wird. Beispielsweise kann dieses Stabilisierungselement 30, bevorzugt werden mehrere derartige Stabilisierungselemente 30 über die Länge der Dehnfuge 2 verteilt angeordnet, aus einem Rundstahl gebildet sein. Auch andere geometrische, stangenförmige Formen sind möglich. Diese Stabilisierungselemente 30 bewirken eine Bewehrung des elastischen Elementes 15 und damit eine Verbesserung von dessen mechanischen Eigenschaften. Das Stabilisierungselement 30 bzw. die Stabilisierungselemente 30 sind in der bevorzugten Ausführung an dem bzw. an den Halteelement(en) 19, 20 abgestützt. Insbesondere erfolgt die Abstützung an den beiden Schenkeln 23, 24 der Halteelemente 19, 20, wie dies in Fig. 3 dargestellt ist. An den, den beiden Schenkeln 23, 24 der Halteelemente 19, 20 zugewandten Enden können Muttern und Beilagscheiben (nicht dargestellt) angeordnet werden, um eine Vorspannung der Stabilisierungselemente 30 zwischen den beiden Schenkeln 23, 24 zu erreichen. Es ist weiters möglich, dass über zumindest einen Teil der Stabilisierungselemente 30 eine Druckfeder 31, beispielsweise eine Spiralfeder, angebracht wird, um ein Ausknüpfen der Stabilisierungselemente aus dem Verguss des elastischen Elementes 15 zu verhindern. 3 shows a detail of an embodiment variant of the device 1. It is possible within the scope of the invention for at least one stabilizing element 30 to be arranged in the elastic element 15. FIG. For example, this stabilizing element 30, preferably several such stabilizing elements 30 distributed over the length of the expansion joint 2, can be formed from round steel. Other geometric, rod-shaped shapes are also possible. These stabilizing elements 30 reinforce the elastic element 15 and thus improve its mechanical properties. In the preferred embodiment, the stabilizing element 30 or the stabilizing elements 30 are supported on the holding element or elements 19 , 20 . In particular, the support takes place on the two legs 23, 24 of the holding elements 19, 20, as is shown in 3 is shown. Nuts and washers (not shown) can be arranged on the ends facing the two legs 23, 24 of the holding elements 19, 20 in order to achieve a prestressing of the stabilizing elements 30 between the two legs 23, 24. It is also possible for a compression spring 31, for example a spiral spring, to be fitted over at least some of the stabilizing elements 30 in order to prevent the stabilizing elements from being untied from the casting of the elastic element 15.

In der bevorzugten Ausführungsvariante sind die Stabilisierungselemente 30 nicht direkt im elastischen Element 15 eingebettet, sondern sind diese Stabilisierungselemente 30 in einem hülsenförmigen Element 32, welches jeweils ein Stabilisierungselement 30 in radialer Richtung umgibt, geführt.In the preferred embodiment variant, the stabilizing elements 30 are not embedded directly in the elastic element 15, but these stabilizing elements 30 are guided in a sleeve-shaped element 32, which in each case surrounds a stabilizing element 30 in the radial direction.

Es besteht die Möglichkeit, dass in einem hülsenförmigen Element 32 mehrere Stabilisierungselemente 30 angeordnet werden, jedoch ist dies nicht die bevorzugte Ausführungsvariante, da damit Volumen zur Ausbildung des elastischen Elementes 15 verloren geht.It is possible for several stabilizing elements 30 to be arranged in a sleeve-shaped element 32, but this is not the preferred embodiment variant, since this means that volume for forming the elastic element 15 is lost.

Um Reibungen zwischen dem elastischen Element 15 zu verhindern, kann vorgesehen werden, dass anstelle der hülsenförmigen Elemente 32 oder zusätzlich und diese umgebend ein Spiralschlauch 33, beispielsweise aus Kunststoff vorgesehen wird, welcher in dem elastischen Element 15, während dessen Herstellung, eingegossen wird. Es wird damit auch ermöglicht, die Dehnungen gleichmäßig auf die Stabilisierungselemente 30 zu übertragen.In order to prevent friction between the elastic element 15, a spiral hose 33, for example made of plastic, can be provided instead of the sleeve-shaped elements 32 or additionally and surrounding them, which is cast in the elastic element 15 during its manufacture. This also makes it possible to transmit the expansions uniformly to the stabilizing elements 30 .

Die Ausführungsbeispiele zeigen mögliche Ausführungsvarianten der Vorrichtung 1, wobei an dieser Stelle bemerkt sei, dass die Erfindung nicht auf die speziell dargestellten Ausführungsvarianten derselben eingeschränkt ist, sondern gemäß dem Schutzumfang, definiert durch die beiliegenden Patentansprüche. Auch diverse Kombinationen der einzelnen Ausführungsvarianten untereinander sind möglich und diese Variationsmöglichkeit aufgrund der Lehre zum technischen Handeln durch gegenständliche Erfindung im Können des auf diesem technischen Gebiet tätigen Fachmannes liegt.The embodiments show possible variants of the device 1, it being noted at this point that the invention is not specifically illustrated embodiment variants thereof is limited, but according to the scope of protection defined by the appended patent claims. Diverse combinations of the individual design variants are also possible, and this possibility of variation is within the ability of a person skilled in the art working in this technical field on the basis of the teaching on technical action through the present invention.

Der Ordnung halber sei abschließend darauf hingewiesen, dass zum besseren Verständnis des Aufbaus der Vorrichtung 1 diese bzw. deren Bestandteile teilweise unmaßstäblich und/oder vergrößert und/oder verkleinert dargestellt wurden.Finally, for the sake of order, it should be pointed out that, for a better understanding of the structure of the device 1, it or its components are sometimes shown not to scale and/or enlarged and/or reduced.

Bezugszeichenaufstellunglist of reference numbers

11
Vorrichtungcontraption
22
Dehnfugeexpansion joint
33
Fahrbahnroadway
44
Fahrbahnroadway
55
Oberbaukonstruktionsuperstructure
66
Unterbaukonstruktionsubstructure
77
Bodenelementfloor element
88th
Bodenelementfloor element
99
Unterbauschwellesubstructure threshold
1010
Unterbauschwellesubstructure threshold
1111
BreiteBroad
1212
BreiteBroad
1313
Dichtelementsealing element
1414
Dichtelementsealing element
1515
Elementelement
1616
Kontaktflächecontact surface
1717
Abdeckelementcover element
1818
Zentrierelementcentering element
1919
Halteelementholding element
2020
Halteelementholding element
2121
BasisBase
2222
BasisBase
2323
Schenkelleg
2424
Schenkelleg
2525
Verbundankerchemical anchor
2626
Verbundankerchemical anchor
2727
Schubnasethrust nose
2828
Schubnasethrust nose
2929
Schichtdickelayer thickness
3030
Stabilisierungselementstabilization element
3131
Druckfedercompression spring
3232
Elementelement
3333
Spiralschlauchspiral hose

Claims (12)

  1. A device (1) for bridging an expansion joint (2) in the region of a carriageway, comprising a superstructure (5) and a substructure (6), having the following features:
    the substructure (6) forms a support for the superstructure (5);
    the superstructure (5) has at least one resilient element (15);
    at least one holding element (19, 20) which is at least partially embedded in the resilient element (15) is arranged in the superstructure (5);
    the at least one holding element (19, 20) is formed by an angle profile or by angle profiles and is arranged so as to extend continuously over at least approximately the entire length of the superstructure (5) ;
    the resilient element (15) of the superstructure (5) is cast in situ;
    characterized in that
    the resilient element (15) consists of a cold-setting castable synthetic resin or a cold-setting castable plastics in the form of a polycarbamide system or polyurea system,
    wherein
    - the polycarbamide system or the polyurea system has a Shore A hardness of 55 to 85,
    - the tensile strength of the polycarbamide system or the polyurea system according to DIN 53504 is between 10 and 30 N/mm2,
    - the polycarbamide system or the polyurea system has an expansion according to DIN 53504 of between 400 and 1200%, and
    - the viscosity of the polycarbamide system or the polyurea system at 23 °C is between 4000 and 6000 mPas.
  2. The device (1) according to Claim 1, characterized in that the holding element (s) (19, 20) has or have at least one recess into which the resilient element (15) protrudes.
  3. The device (1) according to one of Claims 1 or 2, characterized in that the resilient element (15) has a layer thickness (29) of a maximum of 60 mm.
  4. The device (1) according to one of Claims 1 to 3, characterized in that the substructure (6) at least partially consists of at least one material from the group comprising epoxy resins, polymer concrete, concrete, steel.
  5. The device (1) according to one of Claims 1 to 4, characterized in that the holding element(s) (19, 20) is or are connected by at least one shear connector (25, 26) to the substructure (6).
  6. The device (1) according to one of Claims 1 to 5, characterized in that at least one shear key (27, 28) is configured on the resilient element (15) on a lower face which faces in the direction of the substructure (6), preferably so as to extend continuously over at least approximately the entire length of the superstructure (5).
  7. The device (1) according to one of Claims 1 to 6, characterized in that at least one stabilizing element (30) is arranged in the resilient element (15).
  8. The device (1) according to Claim 7, characterized in that the stabilizing element(s) (30) is or are arranged in one or more sleeve-shaped element(s) (32).
  9. The device (1) according to Claim 7 or 8, characterized in that the stabilizing element(s) (30) is or are supported on the holding element (s) (19, 20) .
  10. The device (1) according to one of Claims 7 to 9, characterized in that the stabilizing element(s) (30) extends or extend between upwardly protruding arms (23, 24) of the angle profiles.
  11. The device (1) according to one of Claims 7 to 10, characterized in that the stabilizing element(s) (30) has or have in each case a compression spring (31).
  12. The device (1) according to one of Claims 7 to 11, characterized in that the stabilizing element(s) (30) or the sleeve-shaped element (s) (32) is or are at least partially surrounded by a spiral tube (33).
EP10776260.1A 2009-09-30 2010-09-30 Device for bridging an expansion joint Active EP2483477B2 (en)

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ATA1541/2009A AT508847B1 (en) 2009-09-30 2009-09-30 DEVICE FOR BRIDGING AN EXTENSION
PCT/AT2010/000359 WO2011038434A2 (en) 2009-09-30 2010-09-30 Device for bridging an expansion joint

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EP2483477B1 EP2483477B1 (en) 2020-02-19
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US (1) US8671489B2 (en)
EP (1) EP2483477B2 (en)
JP (1) JP6077304B2 (en)
KR (1) KR20120135399A (en)
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DK (1) DK2483477T4 (en)
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WO2011038434A3 (en) 2012-06-14
JP6077304B2 (en) 2017-02-08
AT508847A1 (en) 2011-04-15
US20120308303A1 (en) 2012-12-06
DK2483477T3 (en) 2020-04-20
RU2558557C2 (en) 2015-08-10
DK2483477T4 (en) 2023-03-27
RU2012117168A (en) 2013-11-10
EP2483477B1 (en) 2020-02-19
AT508847B1 (en) 2012-07-15
WO2011038434A2 (en) 2011-04-07
EP2483477A2 (en) 2012-08-08
US8671489B2 (en) 2014-03-18
JP2013506070A (en) 2013-02-21

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