EP2194190B1 - Expansion joint bridging device - Google Patents

Expansion joint bridging device Download PDF

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Publication number
EP2194190B1
EP2194190B1 EP08021039A EP08021039A EP2194190B1 EP 2194190 B1 EP2194190 B1 EP 2194190B1 EP 08021039 A EP08021039 A EP 08021039A EP 08021039 A EP08021039 A EP 08021039A EP 2194190 B1 EP2194190 B1 EP 2194190B1
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EP
European Patent Office
Prior art keywords
expansion joint
bridging device
joint bridging
sealing
profiles
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EP08021039A
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German (de)
French (fr)
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EP2194190A1 (en
Inventor
Mario Flietner
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Mageba SA
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Mageba SA
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Publication of EP2194190A1 publication Critical patent/EP2194190A1/en
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    • 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
    • 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
    • E01D19/062Joints having intermediate beams

Definitions

  • the present invention relates to an expansion joint bridging device in the form of a roadway crossing in road construction, comprising two relatively movable profiles with a arranged between them variable width Dehnfugenspalt over which a deformable sealing sheet extends, which is fixed edge to the two profiles the geomembrane has thickened profiled edge sections which are each received in a form-fitting manner in an associated receiving groove of the relevant profile. Furthermore, the present invention relates to a method for refurbishing such an expansion joint bridging device.
  • Expansion joint bridging devices in the form of roadway crossings in road construction and road construction are used to compensate for heat-related expansion or shrinkage of the superstructure.
  • unicellular or multicellular expansion joint bridging devices are used, the former comprising exactly two profiles and a sealing membrane arranged between them, the latter meanwhile having a larger number of profiles and a plurality of sealing membranes.
  • Multicellular expansion joint bridging devices are often referred to as lamellae lane transitions because of their construction.
  • the US-A-4305680 deals in conjunction with generic expansion joint bridging devices with the mechanical anchoring of such geomembranes whose edge portions - to facilitate insertion into the grooves of the profiles - are made hollow.
  • the flexibility of the hollow edge sections is thereby sustainably reduced by the cavities - after installation of the geomembrane - be filled with an incompressible material.
  • the DE-C-3739717 discloses another expansion joint bridging device designed as a roadway crossing.
  • C-shaped retaining profiles are welded on top of the edge profiles as well as the lamellae arranged between them.
  • two adjacent sealing webs engage with edge portions in each case such a holding profile, wherein an existing between the two respective edge portions intermediate space is filled with a cast body, which also extends into a space between the holding profile and the respective edge portions.
  • not a plurality of individual, separate sealing webs are provided, but rather a continuous sealing mat with slots or holes that can be filled in a corresponding manner with a cast body.
  • the EP 0839967 A1 relates to the mechanically permanent anchoring of an elastic connector sealingly connected to two adjacent concrete parts of a structure.
  • an elastic connector sealingly connected to two adjacent concrete parts of a structure.
  • between the edge portions of the connector and these receiving grooves of the concrete parts existing cavities after the edge portions of the connector and the said cavities have been used, filled with a thermosetting mortar, whereby the connector is permanently anchored on both sides permanently on the two concrete building parts.
  • the present invention has for its object to provide an expansion joint bridging device of the aforementioned type, which can be used for improved protection of the arranged below the geomembrane components characterized by a particularly effective sealing of the geomembrane (s) against the associated profiles.
  • the WO-2006/002992 describes a generic roadway transition and discloses all the features of the preamble of claim 1.
  • expansion joints bridging devices are distinguished in particular by the fact that in the receiving grooves of the profiles existing cavities, which are delimited by the inner surface of the respective receiving groove and the outer surface of the edge portion of the sealing web inserted into the respective receiving groove, subsequently, that is after the respective profiled edge portion of the Sealing membrane has been inserted into the associated receiving groove of the profile in question, is filled with a introduced into the cavity in question sealing medium.
  • This can be done in the context of the present invention with newly installed expansion joint bridging devices - more or less immediately after the insertion ("buttoning") of the geomembrane (s) between the profiles - already factory.
  • a particularly important field of application of the present invention forms the rehabilitation of existing expansion joint bridging devices, especially when - sometimes only after many years of use - the binding of the geomembrane (s) to the associated profiles proves to be leaking.
  • Such leaks are often localized, for example, areas in which the receiving groove bent, kinked or angled runs such as the transition from the roadway area to the sidewalk area in or on Schrammbord.
  • the sealing medium can be introduced by suitable measures (see below) from below into the cavities in question contribute.
  • the present invention is not only applicable to such expansion joint bridging devices, in which the cavity to be filled with the sealing medium by a through the inner wall of the receiving groove and the outer surface of the recorded therein edge portion of the geomembrane limited, extending in the longitudinal direction of the respective edge portion constructive defined sealing cavity is formed. Rather - and in particular - can be filled within the meaning of the present invention subsequently by introducing a sealing medium, such cavities, the are not provided by design and, for example, result from a lack of dimensional stability of the profile and / or the geomembrane or arise over time by aging phenomena such as shrinkage and / or damage. The same applies to tolerance-related cavities.
  • the cavities to be filled with the sealing medium need not extend over the entire longitudinal extent of the geomembrane, but rather may also be locally limited (eg concentrated to areas in which the edge portions of the geomembranes are bent, kinked or discarded ).
  • Corresponding local leaks which can be remedied with minimal effort in application of the present invention, can be determined in particular by regular inspections of the expansion joint bridging devices, in particular by traceability of traces of water or the like.
  • each profile has at least one defined injection channel, which opens into the associated receiving groove.
  • a plurality of injection channels are provided distributed over the extension of the profiles.
  • the injection channels can already have been introduced into the profile concerned at the factory.
  • they are typically drilled on site.
  • the at least one injection channel is closed by means of a return flow-blocking nipple.
  • a return flow-blocking nipple In particular, commercially available lubricating nipples can be used which are hammered or screwed into the injection channels. In the latter case, a thread is cut into the injection channels, after they have been drilled into the profiles for the purpose of applying the present invention, after drilling.
  • the particular advantage of using said backflow stopper nipple is that in the event that an extended cavity - through several injection channels through - is to be filled with a sealing medium, this introduced in rapid succession by means of a suitable tool (eg hand-lubricating or pressing unit) through the individual nipple into the cavity can be.
  • a suitable tool eg hand-lubricating or pressing unit
  • This is particularly advantageous if a sealing medium is used, which is processable only for a limited period of time, as is the case for example for certain two-component sealing media (see below).
  • a sealing medium is used, which is wasserquelltop. This results in a sense a self-sealing effect by penetrating into the receiving water, which comes into contact with the sealing medium, whereby the latter swells.
  • a sealing medium in particular two-component sealing media whose viscosity increases after injection into the sealing cavity.
  • a two-component sealing medium based on polyurethane resin may have a processing viscosity at 25 ° C of less than 180 mPas, which is suitable for typical applications of the present invention.
  • a two-component sealing medium which forms a hydrogel in the fully reacted state.
  • the two-component sealing medium may particularly preferably consist of an acrylate resin.
  • Processing viscosities at 20 ° C of less than 5 mPas achieve.
  • Such a low viscosity is not only beneficial because this sealing medium penetrates into very fine cavities (eg cracks) and provides an effective seal there.
  • a very significant further advantage is that such a low-viscosity sealing medium can be introduced into the relevant cavity via suitable cannulas, which are pierced through the respective edge section of the sealing membrane and penetrate into the cavity to be filled. The hole left by the injection cannula when it is pulled out again in the edge section of the sealing membrane is thereby sealed by the sealing medium.
  • Visible can be dispensed with the application of such low-viscosity sealing medium with suitable profiles and other structural conditions, where appropriate, on the introduction of special injection channels by drilling or the like, which again contributes to a further reduction associated with the rehabilitation of an existing expansion joint bridging device effort.
  • the present invention is, as stated above, particularly applicable to such expansion joint bridging devices in which the cavity to be filled with the sealing medium is formed by a structurally defined sealing cavity, through the inner wall of the receiving groove and the outer surface of the edge portion received therein the geomembrane is limited.
  • several such sealing cavities can be arranged in each receiving groove. These can in particular by a sealing lip of the associated edge portion of the geomembrane, which on the inner wall of the receiving groove is present, separated from each other.
  • the individual sealing cavities arranged within a receiving groove can be delimited from one another by a sealing lip formed on the inner wall of the receiving groove and resting against the outer surface of the edge section of the sealing web received therein.
  • a sealing cavity can be accessible from below via corresponding injection channels from above and another sealing cavity above this associated injection channels.
  • a two-component sealing medium based on an acrylate resin also proves to be advantageous from the point of view that the sealing medium does not make it difficult to exchange the sealing sheet possibly later than is necessary. This is precisely what applies to said specific two-component sealing medium. Because despite the excellent sealing effect of introduced into the cavities in question, hardened therein sealing medium, the geomembrane can easily remove from the receiving groove. The cured sealing medium adheres even to the respective edge portion of the geomembrane, so that a complex cleaning of the receiving groove before a new geomembrane is used, is unnecessary. Remains that should adhere to the inner wall of the receiving groove can easily be pulled off in the manner of a rubber cord.
  • the pot life over the selected mixing ratio of the components specifically to the respective task in particular to the extent of the with the sealing medium adapted to be filled cavity.
  • a processing of this sealing medium over a very large temperature range minus 5 ° C to plus 40 ° C is possible, so far as there are no appreciable restrictions, as far as the seasonal time of rehabilitation of an expansion joint bridging device. Since the material is also water-soluble, a cleaning of the equipment as well as a disposal of residual amounts is easily and easily possible.
  • cavities are to be filled with the sealing medium, which extend over the entire length of the receiving groove, as applies in particular to design-defined defined sealing cavities, the two ends are expediently closed before the introduction of the sealing medium into the relevant sealing cavity, There to prevent leakage of the sealing medium. This is advantageous because it favors complete filling of the cavity.
  • Fig. 2 illustrates how in applying a preferred embodiment of the invention in the built-in expansion joint bridging device with minimal effort, in particular without replacement of the geomembrane, the tightness of the connection of the geomembrane 1 to the two profiles 3 can be effectively improved. Namely, at the required intervals, the screws 10 with which the tooth profiles 11 are screwed to the profiles 3 are removed. Instead, lubricating nipples 12 are screwed into the profiles 3. Through the lubricating nipple 12 and the threaded holes 13 of the profiles 3 through an existing of an acrylate resin sealing medium 14 is introduced into the upper cavity 8. The respective threaded holes 13 thus act as injection channels 15, which open into the cavity 8, which forms a defined sealing cavity 16 in this way. Subsequently, the lubricating nipple 12 are removed again and the screws 10 are screwed back into the threaded bores 13. The number of grease nipples used and the distance between them depends on the flow properties of the sealing medium 14.
  • the injection channels as shown, typically accessible from above.
  • Fig. 4 is shown, in a factory, ie before the installation takes place sealing the expansion joint bridging device in application of the present invention, the injection channels 17 from the (later) underside accessible and in particular in the lower cavities 9, which form sealing cavities 18 in this way, lead.
  • a practicable alternative is the turning of appropriately prepared grease nipples into smooth bores.
  • Fig. 5 shows a known as such, typical multi-cell (here five-cell) expansion joint bridging device (lamella-lane transition), in which four lamellae 21 are supported on trusses 22. Both the slats 21 and the edge profiles 23 represent profiles 3 in the sense of the present invention, on which sealing sheets 1, each bridge a Dehnfugenspalt D or cover this, are fixed with their thickened, profiled edge portions 2.
  • corresponding multicellular expansion joint bridging devices are well known, inter alia by documents cited at the beginning of the prior art, the disclosure content of which is expressly incorporated by reference into the subject matter of the present patent application Fig. 5 omitted construction.
  • a built-in expansion joint bridging device of in Fig. 5 In order to improve the tightness of the connection of the sealing sheets 1 to the profiles 3, the present invention can be used, for example, in the present invention Fig. 6 Apply illustrated way.
  • Fig. 6 Apply illustrated way.
  • the manufacture of the threaded hole can through the lower Ridge 27 of the relevant lamella, ie by a passing through this auxiliary bore 28 through.
  • a grease nipple 12 is then screwed.
  • the threaded hole constitutes an injection channel 29 for sealing medium 31 to be introduced through the lubricating nipple 12 into the lower cavity 26, which in this way forms a sealing cavity 30.
  • the auxiliary bore 28 is closed after completion of the renovation work on the expansion joint bridging device and protected against corrosion.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)
  • Bridges Or Land Bridges (AREA)

Description

Die vorliegende Erfindung betrifft eine Dehnfugen-Überbrückungsvorrichtung in Form eines Fahrbahnübergangs im Straßen- und Wegebau, umfassend zwei relativ zueinander bewegbare Profile mit einem zwischen diesen angeordneten breitenveränderlichen Dehnfugenspalt, über den sich eine verformbare Dichtungsbahn erstreckt, welche randseitig an den beiden Profilen fixiert ist, wobei die Dichtungsbahn verdickte profilierte Randabschnitte aufweist, die jeweils in einer zugeordneten Aufnahmenut des betreffenden Profils formschlüssig aufgenommen sind. Des Weiteren betrifft die vorliegende Erfindung ein Verfahren zur Sanierung einer solchen Dehnfugen-Überbrückungsvorrichtung.The present invention relates to an expansion joint bridging device in the form of a roadway crossing in road construction, comprising two relatively movable profiles with a arranged between them variable width Dehnfugenspalt over which a deformable sealing sheet extends, which is fixed edge to the two profiles the geomembrane has thickened profiled edge sections which are each received in a form-fitting manner in an associated receiving groove of the relevant profile. Furthermore, the present invention relates to a method for refurbishing such an expansion joint bridging device.

Dehnfugen-Überbrückungsvorrichtungen in Form von Fahrbahnübergängen im Straßen- und Wegebau werden eingesetzt, um eine wärmebedingte Ausdehnung bzw. Schrumpfung des Überbaus zu kompensieren. Je nach dem maximal zu kompensierenden Maß kommen dabei einzellige oder aber mehrzellige Dehnfugen-Überbrückungsvorrichtungen zum Einsatz, wobei erstere genau zwei Profile und eine zwischen diesen angeordnete Dichtungsbahn umfassen, letztere indessen eine größere Anzahl von Profilen und mehrere Dichtungsbahnen. Mehrzellige Dehnfugen-Überbrückungsvorrichtungen, wie sie von der vorliegenden Erfindung mit umfasst sind, werden aufgrund ihrer Bauweise häufig auch als Lamellen-Fahrbahnübergänge bezeichnet.Expansion joint bridging devices in the form of roadway crossings in road construction and road construction are used to compensate for heat-related expansion or shrinkage of the superstructure. Depending on the maximum degree to be compensated, unicellular or multicellular expansion joint bridging devices are used, the former comprising exactly two profiles and a sealing membrane arranged between them, the latter meanwhile having a larger number of profiles and a plurality of sealing membranes. Multicellular expansion joint bridging devices, as encompassed by the present invention, are often referred to as lamellae lane transitions because of their construction.

Zum Stand der Technik betreffend bekannte gattungsgemäße, im oberbegriff des Anspruchs 1 angegebene Dehnfugen-Überbrückungsvorrichtungen ist beispielsweise zu verweisen auf die folgenden Dokumente: DE 197 05 531 A1 , EP 1 327 026 B1 , DE 44 33 909 A1 , DE 41 38 347 A1 , DE 198 03 004 A1 , DE 196 30 328 A1 , EP 0 821 104 B1 , EP 1 621 674 A1 , DE 88 16 536 U1 , DE 35 22 864 A1 und DE 80 10 697 U1 . Die zwischen jeweils zwei einander benachbarten Profilen angeordnete Dichtungsbahn soll dabei verhindern, dass im Bereich der Dehnfugen-Überbrückungsvorrichtung Wasser und/oder Schmutz bzw. Fremdkörper in den Dehnfugenspalt gelangen und dort Schäden anrichten bzw. die Funktionsfähigkeit beeinträchtigen. Typischerweise weisen die verdickten Randabschnitte der Dichtungsbahnen hierzu spezifische Profilierungen auf, die im Zusammenwirken mit den entsprechend gestalteten Aufnahmenuten der betreffenden Profile für eine Abdichtung sorgen sollen.The prior art concerning known generic, specified in the preamble of claim 1 expansion joint bridging devices is for example too refer to the following documents: DE 197 05 531 A1 . EP 1 327 026 B1 . DE 44 33 909 A1 . DE 41 38 347 A1 . DE 198 03 004 A1 . DE 196 30 328 A1 . EP 0 821 104 B1 . EP 1 621 674 A1 . DE 88 16 536 U1 . DE 35 22 864 A1 and DE 80 10 697 U1 , The arranged between each two adjacent profiles geomembrane is intended to prevent water and / or dirt or debris from entering the expansion joint gap in the area of the expansion joint bridging device and cause damage there or impair the functionality. Typically, the thickened edge portions of the geomembrane have this specific profiles, which should provide in conjunction with the correspondingly shaped grooves of the respective profiles for a seal.

Die US-A-4305680 befasst sich im Zusammengang mit gattungsgemäßen Dehnfugen-Überbrückungsvorrichtungen mit der mechanischen Verankerung solcher Dichtungsbahnen, deren Randabschnitte - zur Erleichterung des Einsetzens in die Aufnahmenuten der Profile - hohl ausgeführt sind. Um die Zuverlässigkeit der mechanischen Verankerung eben jener nachgiebigen Randabschnitte in den Aufnahmenuten zu verbessern und zu verhindern, dass die Dichtungsbahn ungewollt aus den Aufnahmenuten heraus gerissen wird, wird die Nachgiebigkeit der hohlen Randabschnitte dadurch nachhaltig reduziert, indem deren Hohlräume - nach der Montage der Dichtungsbahn - mit einem inkompressiblen Material gefüllt werden.The US-A-4305680 deals in conjunction with generic expansion joint bridging devices with the mechanical anchoring of such geomembranes whose edge portions - to facilitate insertion into the grooves of the profiles - are made hollow. In order to improve the reliability of the mechanical anchoring of just those resilient edge portions in the grooves and to prevent the geomembrane is torn unintentionally out of the grooves out, the flexibility of the hollow edge sections is thereby sustainably reduced by the cavities - after installation of the geomembrane - be filled with an incompressible material.

Die DE-C-3739717 offenbart eine andere als Fahrbahnübergang ausgeführte Dehnfugen-Überbrückungsvorrichtung. Oben auf den Randprofilen sowie den zwischen diesen angeordneten Lamellen sind dabei C-förmige Halteprofile angeschweißt. Jeweils zwei einander benachbarte Dichtungsbahnen greifen dabei mit Randabschnitten in jeweils ein solches Halteprofil ein, wobei ein zwischen den beiden jeweiligen Randabschnitten bestehender Zwischenraum mit einem Gusskörper verfüllt wird, welcher sich auch in einen Zwischenraum zwischen dem Halteprofil und den betreffenden Randabschnitten hinein erstreckt. In einer Variante sind nicht mehrere einzelne, voneinander getrennte Dichtungsbahnen vorgesehen, sondern vielmehr eine durchgehende Dichtungsmatte mit Schlitzen oder Bohrungen, die in entsprechender Weise mit einem Gusskörper verfüllt werden können.The DE-C-3739717 discloses another expansion joint bridging device designed as a roadway crossing. C-shaped retaining profiles are welded on top of the edge profiles as well as the lamellae arranged between them. In each case two adjacent sealing webs engage with edge portions in each case such a holding profile, wherein an existing between the two respective edge portions intermediate space is filled with a cast body, which also extends into a space between the holding profile and the respective edge portions. In one variant, not a plurality of individual, separate sealing webs are provided, but rather a continuous sealing mat with slots or holes that can be filled in a corresponding manner with a cast body.

Die EP 0839967 A1 betrifft die mechanisch dauerhafte Verankerung eines dichtend an zwei angrenzende Betonteile eines Bauwerks angeschlossenen elastischen Verbinders. Dabei werden zwischen den Randabschnitten des Verbinders und den diese aufnehmenden Nuten der Betonteile bestehende Hohlräume, nachdem die Randabschnitte des Verbinders und die besagten Hohlräume eingesetzt worden sind, mit einem aushärtenden Mörtel verfüllt, wodurch der Verbinder beidseitig dauerhaft an den beiden Beton-Bauwerksteilen verankert wird.The EP 0839967 A1 relates to the mechanically permanent anchoring of an elastic connector sealingly connected to two adjacent concrete parts of a structure. In this case, between the edge portions of the connector and these receiving grooves of the concrete parts existing cavities after the edge portions of the connector and the said cavities have been used, filled with a thermosetting mortar, whereby the connector is permanently anchored on both sides permanently on the two concrete building parts.

Die vorliegende Erfindung hat sich zur Aufgabe gestellt, eine Dehnfugen-Überbrückungsvorrichtung der Eingangs genannten Art bereitzustellen, die sich zum verbesserten Schutz der unterhalb der Dichtungsbahnen angeordneten Komponenten durch eine besonders wirksame Abdichtung der Dichtungsbahn(en) gegenüber den zugeordneten Profilen auszeichnet.The present invention has for its object to provide an expansion joint bridging device of the aforementioned type, which can be used for improved protection of the arranged below the geomembrane components characterized by a particularly effective sealing of the geomembrane (s) against the associated profiles.

Die WO-A-2006/002992 beschreibt einen gattungsgemäßen Fahrbahnübergang und offenbart sämtliche Merkmale des Oberbegriffs des Anspruchs 1.The WO-2006/002992 describes a generic roadway transition and discloses all the features of the preamble of claim 1.

Gelöst wird die vorstehend angegebene Au gabenstellung, indem bei einer Dehnfugen-Überbrückungsvorrichtung der gattungsgemäßen Art in den Aufnahmenuten bestehende, durch diese und den jeweils darin aufgenommenen Randabschnitt der Dichtungsbahn begrenzte Hohlräume mit einem nachträglich darin eingebrachten Dichtmedium verfüllt sind, wobei jedes Profil mindestens einen Injektionskanal aufweist, der in der betreffenden zugeordneten Aufnahmenut mündet, und die besagten Hohlräume durch den jeweiligen Injektionskanal hindurch mit dem Dichtmedium verfüllt sind. Erfindungsgemäße Dehnfugen-Überbrückungsvorrichtungen zeichnen sich mit anderen Worten insbesondere dadurch aus, dass in den Aufnahmenuten der Profile bestehende Hohlräume, die durch die innere Oberfläche der betreffenden Aufnahmenut sowie die äußere Oberfläche des in die betreffende Aufnahmenut eingesetzten Randabschnitts der Dichtungsbahn begrenzt werden, nachträglich, das heißt nachdem der betreffende profilierte Randabschnitt der Dichtungsbahn in die zugeordnete Aufnahmenut des betreffenden Profils eingesetzt worden ist, mit einem in den betreffenden Hohlraum eingebrachten Dichtmedium verfüllt wird. Dies kann im Rahmen der vorliegenden Erfindung bei neu einzubauenden Dehnfugen-Überbrückungsvorrichtungen - mehr oder-weniger unmittelbar nach dem Einsetzen ("Einknöpfen") der Dichtungsbahn(en) zwischen die Profile - bereits werksseitig erfolgen. Ein besonders wichtiges Anwendungsgebiet der vorliegenden Erfindung bildet indessen die Sanierung bereits bestehender Dehnfugen-Überbrückungsvorrichtungen, insbesondere dann, wenn sich - zum Teil erst nach vielen Jahren des Einsatzes - die Anbindung der Dichtungsbahn(en) an die zugeordneten Profile als undicht erweist. Solche Undichtigkeiten sind nicht selten örtlich begrenzt, beipielsweise auf Bereiche, in denen die Aufnahmenut gebogen, geknickt oder abgewinkelt verläuft wie z.B. beim Übergang vom Fahrbahnbereich zum Gehwegbereich im bzw. am Schrammbord. Von außerordentlicher Tragweite sowohl in kommerzieller Hinsicht als auch im Hinblick auf eine möglichst geringe Beeinträchtigung des Verkehrs in dem Falle, dass sich eine Sanierung einer bestehenden Dehnfugen-Überbrückungsvorrichtung als notwendig erweist, ist die Möglichkeit, in Anwendung der vorliegenden Erfindung die Sanierung der Dehnfugen-Überbrückungsvorrichtung, d.h. die Herstellung einer vollkommen dichten Anbindung der bestehenden Dichtungsbahnen an die Profile ohne jegliche Beeinträchtigung oder Beschränkung des über den entsprechenden Verkehrsweg geleiteten Verkehrs vorzunehmen. Denn bei typischen Dehnfugen-Überbrückungsvorrichtungen, insbesondere solchen, die mehrzellig ausgeführt sind, lässt sich das Dichtmedium durch geeignete Maßnahmen (s.u.) von unten her in die in Rede stehenden Hohlräume einbringen. Vielfach kann auf diese Weise das Entfernen der vorhandenen Dichtungsbahn(en) und Einbauen neuer Dichtungsbahnen, was nicht nur mit erheblichem Kostenaufwand verbunden ist, sondern vielmehr auch eine Sperrung des entsprechenden Verkehrsweges erfordert, auf dem Wege einer Sanierung einer bestehenden Dehnfugen-Überbrückungsvorrichtung gemäß der vorliegenden Erfindung vermieden werden. Unabhängig davon ist die gegebenenfalls nur lokale Abdichtung der Anbindung der Dichtungsbahn(en) an die Profile erkennbar wirtschaftlicher als der Austausch grundsätzlich noch funktionstüchtiger Dichtungsbahnen gegen neue. Aus den vorstehenden Erläuterungen der Erfindung ist, worauf lediglich der Vollständigkeit halber an dieser Stelle nochmals ausdrücklich hingewiesen wird, erkennbar, dass nicht zwingend sämtliche in der jeweiligen Aufnahmenut bestehenden, durch deren Innenfläche und die äußere Oberfläche der Randabschnitte der Dichtungsbahn begrenzten Hohlräume mit dem Dichtmedium verfüllt sein müssen, sondern dass vielmehr bedarfs- und anwendungsabhängig ggf. auch nur einzelne von mehreren solcher Hohlräume mit Dichtmedium verfüllt werden.Is solves the above-mentioned Au giving position by existing in an expansion joint bridging device of the generic type existing in the receiving grooves, through this and the respectively recorded therein edge portion of the geomembrane cavities are filled with a subsequently introduced therein sealing medium, each profile having at least one injection channel which opens into the relevant associated receiving groove, and said cavities are filled through the respective injection channel through with the sealing medium. In other words, expansion joints bridging devices according to the invention are distinguished in particular by the fact that in the receiving grooves of the profiles existing cavities, which are delimited by the inner surface of the respective receiving groove and the outer surface of the edge portion of the sealing web inserted into the respective receiving groove, subsequently, that is after the respective profiled edge portion of the Sealing membrane has been inserted into the associated receiving groove of the profile in question, is filled with a introduced into the cavity in question sealing medium. This can be done in the context of the present invention with newly installed expansion joint bridging devices - more or less immediately after the insertion ("buttoning") of the geomembrane (s) between the profiles - already factory. A particularly important field of application of the present invention, however, forms the rehabilitation of existing expansion joint bridging devices, especially when - sometimes only after many years of use - the binding of the geomembrane (s) to the associated profiles proves to be leaking. Such leaks are often localized, for example, areas in which the receiving groove bent, kinked or angled runs such as the transition from the roadway area to the sidewalk area in or on Schrammbord. Of utmost importance, both in commercial terms and in terms of minimizing the impact on traffic in the event that rehabilitation of an existing expansion joint bridging device proves necessary, the possibility of resorting to the expansion joint bridging device in accordance with the present invention that is, to make the production of a perfectly tight connection of the existing geomembranes to the profiles without any impairment or restriction of the traffic routed via the corresponding traffic route. For in typical expansion joint bridging devices, in particular those which are designed to be multi-celled, the sealing medium can be introduced by suitable measures (see below) from below into the cavities in question contribute. In many cases, in this way, the removal of the existing geomembrane (s) and installing new geomembranes, which is not only associated with considerable expense, but also requires a blockage of the corresponding traffic route, by way of rehabilitation of an existing expansion joint bridging device according to the present Invention can be avoided. Regardless of the possibly only local sealing of the connection of the geomembrane (s) to the profiles noticeably more economical than the replacement of basically functional geomembranes against new. It is apparent from the above explanations of the invention, which is again expressly referred to here for the sake of completeness, that not necessarily all existing in the respective receiving groove, through the inner surface and the outer surface of the edge portions of the geomembrane limited cavities filled with the sealing medium but rather that, depending on requirements and application, possibly only a few of a plurality of such cavities are filled with sealing medium.

Die vorliegende Erfindung ist dabei nicht nur bei solchen Dehnfugen-Überbrückungsvorrichtungen anwendbar, bei denen der mit dem Dichtmedium zu verfüllende Hohlraum durch einen durch die Innenwand der Aufnahmenut und die äußere Oberfläche des darin aufgenommenen Randabschnitts der Dichtungsbahn begrenzten, sich in Längsrichtung des betreffenden Randabschnitts erstreckenden konstruktiv definierten Dichthohlraum gebildet ist. Vielmehr - und insbesondere - können im Sinne der vorliegenden Erfindung nachträglich durch Einbringen eines Dichtmediums auch solche Hohlräume verfüllt werden, die nicht konstruktionsbedingt vorgesehen sind und sich beispielsweise aus einer mangelnden Maßhaltigkeit des Profils und/oder der Dichtungsbahn ergeben oder aber sich im Laufe der Zeit durch Alterungserscheinungen wie Schrumpfen und/oder durch Beschädigungen ergeben. Entsprechendes gilt für toleranzbedingte Hohlräume. Insoweit ist darauf hinzuweisen, dass sich die mit dem Dichtmedium zu verfüllenden Hohlräume mitnichten über die gesamte Längserstreckung der Dichtungsbahn erstrecken müssen, sondern vielmehr insbesondere auch lokal begrenzt sein können (z.B. konzentriert auf Bereiche, in denen die Randabschnitte der Dichtungsbahnen gebogen, geknickt oder verworfen sind). Entsprechende lokale Undichtigkeiten, die in Anwendung der vorliegenden Erfindung mit minimalem Aufwand saniert werden können, lassen sich dabei insbesondere durch regelmäßige Inspektionen der Dehnfugen-Überbrückungsvorrichtungen ermitteln, insbesondere durch Zurückverfolgung von Wasserspuren oder dergleichen.The present invention is not only applicable to such expansion joint bridging devices, in which the cavity to be filled with the sealing medium by a through the inner wall of the receiving groove and the outer surface of the recorded therein edge portion of the geomembrane limited, extending in the longitudinal direction of the respective edge portion constructive defined sealing cavity is formed. Rather - and in particular - can be filled within the meaning of the present invention subsequently by introducing a sealing medium, such cavities, the are not provided by design and, for example, result from a lack of dimensional stability of the profile and / or the geomembrane or arise over time by aging phenomena such as shrinkage and / or damage. The same applies to tolerance-related cavities. In that regard, it should be pointed out that the cavities to be filled with the sealing medium need not extend over the entire longitudinal extent of the geomembrane, but rather may also be locally limited (eg concentrated to areas in which the edge portions of the geomembranes are bent, kinked or discarded ). Corresponding local leaks, which can be remedied with minimal effort in application of the present invention, can be determined in particular by regular inspections of the expansion joint bridging devices, in particular by traceability of traces of water or the like.

Je nach der Bauweise der Dehnfugen-Überbrückungsvorrichtung kommen für das Einbringen des Dichtmediums in den fraglichen Hohlraum unterschiedliche Möglichkeiten in Betracht. Jedes Profil weist mindestens einen definierten Injektionskanal auf, der in der zugeordneten Aufnahmenut mündet. Bei entsprechend breiten Dehnfugen-Überbrückungsvorrichtungen sind, abhängig von der Art des in den Hohlraum einzubringenden Dichtmediums (s.u.), gegebenenfalls mehrere Injektionskanäle über die Erstreckung der Profile verteilt vorgesehen. Die Injektionskanäle können dabei bereits werksseitig in das betreffende Profil eingebracht worden sein. Insbesondere im Falle der Sanierung einer bestehenden Dehnfugen-Überbrückungsvorrichtung werden sie indessen typischerweise vor Ort gebohrt. Wo dies möglich und zweckmäßig ist, namentlich bei mehrzelligen Dehnfugen-Überbrückungsvorrichtungen, ist es besonders günstig, wenn der mindestens eine Injektionskanal von unten zugänglich ist. Auf einen der entscheidenden Vorteile dieser Ausführungsform, nämlich dass die Sanierung einer bestehenden Dehnfugen-Überbrückungsvorrichtung bei fließendem Verkehr durchgeführt werden kann, wurde bereits weiter oben hingewiesen. Günstig ist bei dieser Ausführungsform weiter, dass die Gefahr, dass Fremdkörper in (vorübergehend) offene Injektionskanäle eindringen, äußerst gering ist. Bei neu hergestellten, erst noch einzubauenden Dehnfugen-Überbrückungsvorrichtungen kommt es auf die vorstehend dargelegten Gesichtspunkte nicht oder nur weniger ausgeprägt an, so dass sich bei Anwendung der vorliegenden Erfindung auf neue Dehnfugen-Überbrückungsvorrichtungen gegebenenfalls anbietet, dass der mindestens eine Injektionskanal von oben her zugänglich ist.Depending on the construction of the expansion joint bridging device, different possibilities are possible for introducing the sealing medium into the cavity in question. Each profile has at least one defined injection channel, which opens into the associated receiving groove. With correspondingly wide expansion joint bridging devices, depending on the type of sealing medium to be introduced into the cavity (see below), optionally a plurality of injection channels are provided distributed over the extension of the profiles. In this case, the injection channels can already have been introduced into the profile concerned at the factory. In particular, in the case of rehabilitation of an existing expansion joint bridging device however, they are typically drilled on site. Wherever possible and expedient, especially in multicellular expansion joint bridging devices, it is particularly advantageous if the at least one injection channel is accessible from below. It has already been pointed out above that one of the decisive advantages of this embodiment, namely that the renovation of an existing expansion joint bridging device can be carried out in flowing traffic. It is also favorable in this embodiment that the risk of foreign bodies entering (temporarily) open injection channels is extremely low. In newly manufactured, yet to be installed expansion joint bridging devices, it does not matter or only less pronounced on the above points, so that when applying the present invention to new expansion joint bridging devices optionally offers that the at least one injection channel is accessible from above ,

Gemäß einer anderen bevorzugten Weiterbildung der Erfindung ist vorgesehen, dass der mindestens eine Injektionskanal mittels eines Rückfluss-Sperrnippels verschlossen ist. Dabei können insbesondere handelsübliche Schmiernippel zum Einsatz kommen, die in die Injektionskanäle eingeschlagen oder eingeschraubt werden. Im zuletzt genannten Fall wird in die Injektionskanäle, wenn diese eigens zum Zwecke der Anwendung der vorliegenden Erfindung in die Profile durch Bohren eingebracht werden, nach dem Bohren ein Gewinde geschnitten. Auch dies sind Maßnahmen, die sich problemlos vor Ort im Rahmen der Sanierung einer bestehenden Dehnfugen-Überbrückungsvorrichtung durchführen lassen. Der besondere Vorteil der Verwendung der besagten Rückfluss-Sperrnippel besteht darin, dass in dem Falle, dass ein ausgedehnter Hohlraum - durch mehrere Injektionskanäle hindurch - mit einem Dichtmedium zu verfüllen ist, dieses in rascher Abfolge mittels eines geeigneten Werkzeugs (z.B. Hand-Abschmierpresse oder Pressaggregat) durch die einzelnen Nippel hindurch in den Hohlraum eingebracht werden kann. Dies ist insbesondere von Vorteil, wenn ein Dichtmedium zum Einsatz kommt, welches nur für einen begrenzten Zeitraum verarbeitungsfähig ist, wie dies beispielsweise für bestimmte Zweikomponenten-Dichtmedien (s.u.) gilt.According to another preferred embodiment of the invention, it is provided that the at least one injection channel is closed by means of a return flow-blocking nipple. In particular, commercially available lubricating nipples can be used which are hammered or screwed into the injection channels. In the latter case, a thread is cut into the injection channels, after they have been drilled into the profiles for the purpose of applying the present invention, after drilling. These are also measures that can be easily carried out on site in the context of the renovation of an existing expansion joint bridging device. The particular advantage of using said backflow stopper nipple is that in the event that an extended cavity - through several injection channels through - is to be filled with a sealing medium, this introduced in rapid succession by means of a suitable tool (eg hand-lubricating or pressing unit) through the individual nipple into the cavity can be. This is particularly advantageous if a sealing medium is used, which is processable only for a limited period of time, as is the case for example for certain two-component sealing media (see below).

Gemäß einer wiederum anderen bevorzugten Weiterbildung der Erfindung kommt ein Dichtmedium zum Einsatz, welches wasserquellfähig ist. Hierdurch ergibt sich gewissermaßen ein selbstdichtender Effekt durch in die Aufnahmenut eindringendes Wasser, welches mit dem Dichtmedium in Berührung kommt, wodurch letzteres aufquillt.According to yet another preferred embodiment of the invention, a sealing medium is used, which is wasserquellfähig. This results in a sense a self-sealing effect by penetrating into the receiving water, which comes into contact with the sealing medium, whereby the latter swells.

Im Hinblick auf die erzielbaren Ergebnisse haben sich als Dichtmedium inbesondere Zweikomponenten-Dichtmedien, deren Viskosität nach der Injektion in den Dichthohlraum zunimmt, als vorteilhaft erwiesen. Insoweit günstig ist beispielsweise ein Zweikomponenten-Dichtmedium auf Polyurethanharzbasis. Solche Dichtmedien können insbesondere eine Verarbeitungsviskosität bei 25°C von weniger als 180 mPas aufweisen, was für typische Anwendungsfälle der vorliegenden Erfindung geeignet ist. Noch günstiger ist allerdings ein Zweikomponenten-Dichtmedium, welches im ausreagierten Zustand ein Hydrogel bildet. In diesem Sinne kann das Zweikomponenten-Dichtmedium besonders bevorzugt aus einem Acrylatharz bestehen. Hiermit lassen sich Verarbeitungsviskositäten bei 20°C von weniger als 5 mPas erzielen. Eine solch niedrige Viskosität ist nicht nur deshalb günstig, weil dieses Dichtmedium auch in feinste Hohlräume (z.B. Risse) eindringt und dort für eine wirksame Abdichtung sorgt. Ein ganz wesentlicher weiterer Vorteil besteht darin, dass ein solches niedrigviskoses Dichtmedium über geeignete Kanülen, welche durch den betreffenden Randabschnitt der Dichtungsbahn hindurch gestochen werden und in den zu verfüllenden Hohlraum eindringen, in den betreffenden Hohlraum eingebracht werden kann. Das von der Injektionskanüle, wenn diese wieder herausgezogen wird, in dem Randabschnitt der Dichtungsbahn hinterlassene Loch wird dabei von dem Dichtmedium abgedichtet. Erkennbar kann bei Anwendung eines solchen niedrigviskosen Dichtmediums bei geeigneten Profilen und sonstigen baulichen Gegebenheiten gegebenenfalls auf das Einbringen spezieller Injektionskanäle durch Bohren oder dergleichen verzichtet werden, was nochmals zu einer weiteren Reduzierung des mit der Sanierung einer bestehenden Dehnfugen-Überbrückungsvorrichtung verbundenen Aufwand beiträgt.In view of the achievable results have proven to be advantageous as a sealing medium in particular two-component sealing media whose viscosity increases after injection into the sealing cavity. In that regard, favorable, for example, a two-component sealing medium based on polyurethane resin. In particular, such sealing media may have a processing viscosity at 25 ° C of less than 180 mPas, which is suitable for typical applications of the present invention. Even more favorable, however, is a two-component sealing medium, which forms a hydrogel in the fully reacted state. In this sense, the two-component sealing medium may particularly preferably consist of an acrylate resin. Hereby can be Processing viscosities at 20 ° C of less than 5 mPas achieve. Such a low viscosity is not only beneficial because this sealing medium penetrates into very fine cavities (eg cracks) and provides an effective seal there. A very significant further advantage is that such a low-viscosity sealing medium can be introduced into the relevant cavity via suitable cannulas, which are pierced through the respective edge section of the sealing membrane and penetrate into the cavity to be filled. The hole left by the injection cannula when it is pulled out again in the edge section of the sealing membrane is thereby sealed by the sealing medium. Visible can be dispensed with the application of such low-viscosity sealing medium with suitable profiles and other structural conditions, where appropriate, on the introduction of special injection channels by drilling or the like, which again contributes to a further reduction associated with the rehabilitation of an existing expansion joint bridging device effort.

Die vorliegende Erfindung ist, wie weiter oben ausgeführt, insbesondere auch bei solchen Dehnfugen-Überbrückungsvorrichtungen anwendbar, bei denen der mit dem Dichtmedium zu verfüllende Hohlraum durch einen konstruktionsbedingt definierten Dichthohlraum gebildet ist, der durch die Innenwand der Aufnahmenut und die äußere Oberfläche des darin aufgenommenen Randabschnitts der Dichtungsbahn begrenzt ist. Insbesondere können dabei in jeder Aufnahmenut mehrere solcher Dichthohlräume angeordnet sein. Diese können namentlich durch eine Dichtlippe des zugeordneten Randabschnitts der Dichtungsbahn, welche an der Innenwand der Aufnahmenut anliegt, voneinander abgegrenzt sein. Gemäß einer alternativen Ausgestaltung können die einzelnen innerhalb einer Aufnahmenut angeordneten Dichthohlräume durch eine an der Innenwand der Aufnahmenut ausgebildete, an der äußeren Oberfläche des darin aufgenommenen Randabschnitts der Dichtungsbahn anliegende Dichtlippe voneinander abgegrenzt sein. Bei solchen Gestaltungen kann beispielsweise ein Dichthohlraum über entsprechende Injektionskanäle von oben her und ein anderer Dichthohlraum über diesem zugeordnete Injektionskanäle von unten her zugänglich sein.The present invention is, as stated above, particularly applicable to such expansion joint bridging devices in which the cavity to be filled with the sealing medium is formed by a structurally defined sealing cavity, through the inner wall of the receiving groove and the outer surface of the edge portion received therein the geomembrane is limited. In particular, several such sealing cavities can be arranged in each receiving groove. These can in particular by a sealing lip of the associated edge portion of the geomembrane, which on the inner wall of the receiving groove is present, separated from each other. According to an alternative embodiment, the individual sealing cavities arranged within a receiving groove can be delimited from one another by a sealing lip formed on the inner wall of the receiving groove and resting against the outer surface of the edge section of the sealing web received therein. In such designs, for example, a sealing cavity can be accessible from below via corresponding injection channels from above and another sealing cavity above this associated injection channels.

In besonderer Hinsicht als vorteilhaft erweist sich ein Zweikomponenten-Dichtmedium auf Basis eines Acrylatharzes auch unter dem Gesichtspunkt, dass das Dichtmedium einen sich möglicherweise später als notwendig erweisenden Austausch der Dichtungsbahn nicht erschwert. Genau dies trifft nämlich für das genannte spezifische Zweikomponenten-Dichtmedium zu. Denn trotz der hervorragenden Abdichtwirkung des in die fraglichen Hohlräume eingebrachten, darin ausgehärteten Dichtmediums lässt sich die Dichtungsbahn problemlos aus der Aufnahmenut herausnehmen. Das ausgehärtete Dichtmedium haftet dabei sogar an dem betreffenden Randabschnitt der Dichtungsbahn an, so dass eine aufwendige Reinigung der Aufnahmenut, bevor eine neue Dichtungsbahn eingesetzt wird, unnötig ist. Reste, die an der Innenwand der Aufnahmenut anhaften sollten, lassen sich problemlos in Art einer Gummischnur abziehen.In a particular aspect, a two-component sealing medium based on an acrylate resin also proves to be advantageous from the point of view that the sealing medium does not make it difficult to exchange the sealing sheet possibly later than is necessary. This is precisely what applies to said specific two-component sealing medium. Because despite the excellent sealing effect of introduced into the cavities in question, hardened therein sealing medium, the geomembrane can easily remove from the receiving groove. The cured sealing medium adheres even to the respective edge portion of the geomembrane, so that a complex cleaning of the receiving groove before a new geomembrane is used, is unnecessary. Remains that should adhere to the inner wall of the receiving groove can easily be pulled off in the manner of a rubber cord.

Darüber hinaus ergeben sich noch weitere Vorteile. So kann die Topfzeit über das gewählte Mischungsverhältnis der Komponenten spezifisch an die jeweilige Aufgabe, insbesondere an die Ausdehnung des mit dem Dichtmedium zu verfüllenden Hohlraums angepasst werden. Auch ist eine Verarbeitung dieses Dichtmediums über eine sehr große Temperaturspanne (minus 5°C bis plus 40°C) möglich, so dass insoweit keine nennenswerten Einschränkungen bestehen, was den jahreszeitlichen Zeitpunkt der Sanierung einer Dehnfugen-Überbrückungsvorrichtung angeht. Da das Material zudem wasserlöslich ist, ist eine Reinigung der Gerätschaften ebenso wie eine Entsorgung von Restmengen einfach und problemlos möglich.In addition, there are other benefits. Thus, the pot life over the selected mixing ratio of the components specifically to the respective task, in particular to the extent of the with the sealing medium adapted to be filled cavity. Also, a processing of this sealing medium over a very large temperature range (minus 5 ° C to plus 40 ° C) is possible, so far as there are no appreciable restrictions, as far as the seasonal time of rehabilitation of an expansion joint bridging device. Since the material is also water-soluble, a cleaning of the equipment as well as a disposal of residual amounts is easily and easily possible.

Sind in Anwendung der vorliegenden Erfindung mit dem Dichtmedium Hohlräume zu verfüllen, die sich über die gesamte Länge der Aufnahmenut erstrecken, wie dies insbesondere bei konstruktionsbedingt vorgesehenen definierten Dichthohlräumen gilt, so werden zweckmäßigerweise vor dem Einbringen des Dichtmediums in den betreffenden Dichthohlraum die beiden Enden verschlossen, um dort ein Austreten des Dichtmediums zu verhindern. Dies ist von Vorteil, weil es ein vollständiges Verfüllen des Hohlraumes begünstigt.If, in application of the present invention, cavities are to be filled with the sealing medium, which extend over the entire length of the receiving groove, as applies in particular to design-defined defined sealing cavities, the two ends are expediently closed before the introduction of the sealing medium into the relevant sealing cavity, There to prevent leakage of the sealing medium. This is advantageous because it favors complete filling of the cavity.

Nachfolgend wird die vorliegende Erfindung anhand zweier in der Zeichnung veranschaulichter bevorzugter Ausführungsbeispiele näher erläutert. Dabei zeigt

Fig. 1
eine aus dem Stand der Technik bekannte eingebaute einzellige Dehnfugen-Überbrückungsvorrichtung im Vertikalschnitt,
Fig. 2
eine Möglichkeit der Anwendung der vorliegenden Erfindung auf die eingebaute Dehnfugen-Überbrückungsvorrichtung nach Fig. 1,
Fig. 3
eine Abwandlung der in Fig. 2 gezeigten Vorgehensweise,
Fig. 4
eine Möglichkeit der Anwendung der vorliegenden Erfindung auf die in Fig. 1 eingebaut gezeigte Dehnfugen-Überbrückungsvorrichtung vor deren Einbau,
Fig. 5
eine aus dem Stand der Technik bekannte mehrzellige Dehnfugen-Überbrückungsvorrichtung im Vertikalschnitt und
Fig. 6
eine Möglichkeit der Anwendung der vorliegenden Erfindung auf die Dehnfugen-Überbrückungsvorrichtung nach Fig. 5.
Hereinafter, the present invention will be explained in more detail with reference to two illustrated in the drawing preferred embodiments. It shows
Fig. 1
a built-in single-cell expansion joint bridging device known from the prior art in vertical section,
Fig. 2
a way of applying the present invention to the built-in expansion joint bridging device according to Fig. 1 .
Fig. 3
a modification of the in Fig. 2 shown procedure,
Fig. 4
a possibility of applying the present invention to the in Fig. 1 built-in shown expansion joint bridging device prior to its installation,
Fig. 5
a known from the prior art multi-cell expansion joint bridging device in vertical section and
Fig. 6
a way of applying the present invention to the expansion joint bridging device according to Fig. 5 ,

Die in Fig. 1 gezeigte Dehnfugen-Überbrückungsvorrichtung ist aus dem praktischen Einsatz bekannt. Sie ist weiterhin detailliert in der WO 2006/002992 A2 , auf die im vollen Umfang verwiesen wird und deren Offenbarungsgehalt durch Bezugnahme zum Inhalt der vorliegenden Patentanmeldung gemacht wird, beschrieben. Ein Erläuterung des Aufbaus der in Fig. 1 gezeigten Dehnfugen-Überbrückungsvorrichtung erübrigt sich daher.In the Fig. 1 shown expansion joint bridging device is known from the practical use. She is still detailed in the WO 2006/002992 A2 , to which reference is made in its entirety and the disclosure of which is incorporated by reference into the content of the present patent application. An explanation of the structure of in Fig. 1 Therefore shown expansion joint bridging device is unnecessary.

Im Hinblick auf die spezifische Natur der vorliegenden Erfindung wird lediglich besonders hingewiesen auf die aus einem elastisch verformbaren Material bestehende, einen Dehnfugenspalt D überbrückende bzw. diesen abdeckende Dichtungsbahn 1, die zwei verdickte, profilierte Randabschnitte 2 aufweist. In den beiden metallischen Profilen 3 sind Aufnahmenuten 4 ausgebildet, in welche die verdickten Randabschnitte 2 der Dichtungsbahn 1 eingesetzt ("eingeknöpft") sind. An den Profilen 3 ausgebildete Haltekanten 5 greifen dabei jeweils in eine zugeordnete Ausnehmung 6 des in die jeweils betreffende Aufnahmenut eingesetzten Randabschnitts der Dichtungsbahn 1 ein, um für einen im Hinblick auf die mechanischen Belastungen ausreichend festen Halt zu sorgen. Gut erkennbar ist im übrigen die jeweils an dem verdickten, profilierten Randabschnitt 2 ausgebildete Dichtlippe 7, die an der Innenwand der zugeordneten Aufnahmenut 4 anliegt und diese in mehrere definierte Kammern, nämlich einen oberen Hohlraum 8 und einen unteren Hohlraum 9 unterteilt.In view of the specific nature of the present invention, only particular reference is made to the consisting of an elastically deformable material, a Dehnfugenspalt D bridging or this covering geomembrane 1, which has two thickened, profiled edge portions 2. In the two metallic profiles 3 grooves 4 are formed, in which the thickened edge portions 2 of the geomembrane 1 used ("buttoned") are. In this case, holding edges 5 formed on the profiles 3 each engage in an associated recess 6 of the edge section of the sealing sheet 1 inserted into the relevant receiving groove in order to ensure a sufficiently firm hold with respect to the mechanical loads. Well recognizable, moreover, each formed on the thickened, profiled edge portion 2 Sealing lip 7 which rests against the inner wall of the associated receiving groove 4 and this divided into a plurality of defined chambers, namely an upper cavity 8 and a lower cavity 9.

Fig. 2 veranschaulicht, wie in Anwendung einer bevorzugten Ausführungsweise der Erfindung bei der eingebauten Dehnfugen-Überbrückungsvorrichtung mit minimalem Aufwand, insbesondere ohne Austausch der Dichtungsbahn die Dichtigkeit der Anbindung der Dichtungsbahn 1 an die beiden Profile 3 wirkungsvoll verbessert werden kann. Und zwar werden die in den erforderlichen Abständen die Schrauben 10, mit welchen die Zahnprofile 11 an den Profilen 3 angeschraubt sind entfernt. Statt dessen werden Schmiernippel 12 in die Profile 3 eingeschraubt. Durch die Schmiernippel 12 und die Gewindebohrungen 13 der Profile 3 hindurch wird ein aus einem Acrylatharz bestehendes Dichtmedium 14 in den oberen Hohlraum 8 eingebracht. Die betreffenden Gewindebohrungen 13 fungieren somit als Injektionskanäle 15, welche in den Hohlraum 8, der auf diese Weise einen definierten Dichthohlraum 16 bildet, münden. Anschließend werden die Schmiernippel 12 wieder entfernt und die Schrauben 10 wieder in die Gewindebohrungen 13 eingeschraubt. Die Anzahl der verwendeten Schmiernippel und der Abstand zwischen ihnen richtet sich nach den Fließeigenschaften des Dichtmediums 14. Fig. 2 illustrates how in applying a preferred embodiment of the invention in the built-in expansion joint bridging device with minimal effort, in particular without replacement of the geomembrane, the tightness of the connection of the geomembrane 1 to the two profiles 3 can be effectively improved. Namely, at the required intervals, the screws 10 with which the tooth profiles 11 are screwed to the profiles 3 are removed. Instead, lubricating nipples 12 are screwed into the profiles 3. Through the lubricating nipple 12 and the threaded holes 13 of the profiles 3 through an existing of an acrylate resin sealing medium 14 is introduced into the upper cavity 8. The respective threaded holes 13 thus act as injection channels 15, which open into the cavity 8, which forms a defined sealing cavity 16 in this way. Subsequently, the lubricating nipple 12 are removed again and the screws 10 are screwed back into the threaded bores 13. The number of grease nipples used and the distance between them depends on the flow properties of the sealing medium 14.

Die in Fig. 3 gezeigte Abwandlung veranschaulicht das Einbringen des Dichtmediums 14 in den Dichthohlraum 16 in entsprechender Weise bei entfernten Zahnprofilen 11 durch die direkt auf die Profile 3 aufgesetzten Schmiernippel 12.In the Fig. 3 The modification shown illustrates the introduction of the sealing medium 14 in the sealing cavity 16 in a corresponding manner with removed tooth profiles 11 by the directly attached to the profiles 3 grease nipple 12th

Weisen bei ebenfalls bekannten, anders ausgeführten Dehnfugen-Überbrückungsvorrichtungen die Profile 3, weil an ihnen keine Zahnprofile angeschraubt werden, nicht bereits werksseitig eingebrachte Gewindebohrungen auf, so lassen sich solche im Falle einer in Anwendung der vorliegenden Erfindung erfolgenden Sanierung einer entsprechenden, bereits eingebauten Dehnfugen-Überbrückungsvorrichtung vor Ort durch Bohren und Gewindeschneiden herstellen. Für die weiteren Maßnahmen gelten die vorstehenden Erläuterungen in entsprechender Weise.If the profiles 3 are also known, differently constructed expansion joint bridging devices, because no tooth profiles are screwed onto them, not already factory-installed threaded bores, such can be used in the case of a renovation of a corresponding, already installed expansion joint in accordance with the present invention. Make bridging device locally by drilling and tapping. For the further measures, the above explanations apply accordingly.

Bei eingebauten Dehnfugen-Überbrückungsvorrichtungen der in den Fig. 1 bis 3 dargestellten Art sind die Injektionskanäle, wie gezeigt, typischerweise von oben her zugänglich. Demgegenüber können, wie dies in Fig. 4 gezeigt ist, bei einer werksseitig, d.h. vor deren Einbau erfolgenden Abdichtung der Dehnfugen-Überbrückungsvorrichtung in Anwendung der vorliegenden Erfindung die Injektionskanäle 17 von der (späteren) Unterseite her zugänglich sein und insbesondere in die unteren Hohlräume 9, die auf diese Weise Dichthohlräume 18 bilden, münden. In diesem Falle werden eigens Gewindebohrungen 19, in welche Schmiernippel 12 eingeschraubt werden können, dergestalt in den die jeweilige Aufnahmenut 4 nach unten begrenzenden Steg 20 eingebracht, dass sie in dem unteren Hohlraum 9 münden; eine praktikable Alternative besteht in dem Einschlagen von entsprechend hergerichteten Schmiernippeln in glatte Bohrungen. Namentlich bei einer Ausführung der verdickten profilierten Randabschnitte 2 der Dichtungsbahn 1, wie dies in den Fig. 1 bis 4 gezeigt ist, lassen sich auf diese Weise optimale Dichtungsergebnisse erzielen; denn bei einem entsprechend hohen Einpressdruck hebt das in den Dichthohlraum 18 eingebrachte Dichtmedium 14 die Dichtlippe 7 an und tritt auch in den Dichthohlraum 16 ein.With built-in expansion joint bridging devices in the Fig. 1 to 3 As shown, the injection channels, as shown, typically accessible from above. In contrast, as shown in Fig. 4 is shown, in a factory, ie before the installation takes place sealing the expansion joint bridging device in application of the present invention, the injection channels 17 from the (later) underside accessible and in particular in the lower cavities 9, which form sealing cavities 18 in this way, lead. In this case, specially threaded holes 19, in which lubricating nipple 12 can be screwed, in such a way in which the respective receiving groove 4 downwardly limiting web 20 introduced that they open into the lower cavity 9; A practicable alternative is the turning of appropriately prepared grease nipples into smooth bores. Namely, in an embodiment of the thickened profiled edge portions 2 of the geomembrane 1, as shown in the Fig. 1 to 4 is shown, can achieve optimal sealing results in this way; because at a correspondingly high injection pressure lifts in the Sealing cavity 18 introduced sealing medium 14, the sealing lip 7 and also enters the sealing cavity 16 a.

Fig. 5 zeigt eine als solches bekannte, typische mehrzellige (hier fünfzellige) Dehnfugen-Überbrückungsvorrichtung (Lamellen-Fahrbahnübergang), bei der sich vier Lamellen 21 auf Traversen 22 abstützen. Sowohl die Lamellen 21 als auch die Randprofile 23 stellen Profile 3 im Sinne der vorliegenden Erfindung dar, an denen Dichtungsbahnen 1, die jeweils einen Dehnfugenspalt D überbrücken bzw. diesen abdecken, mit ihren verdickten, profilierten Randabschnitten 2 fixiert sind. Angesichts dessen, dass entsprechende mehrzellige Dehnfugen-Überbrückungsvorrichtungen hinlänglich bekannt sind, und zwar unter anderem durch eingangs zum Stand der Technik angegebene Druckschriften, deren Offenbarungsgehalt ausdrücklich durch Bezugnahme zum Gegenstand der vorliegenden Patentanmeldung gemacht wird, wird auf eine nähere Erläuterung der in Fig. 5 gezeigten Bauweise verzichtet. Fig. 5 shows a known as such, typical multi-cell (here five-cell) expansion joint bridging device (lamella-lane transition), in which four lamellae 21 are supported on trusses 22. Both the slats 21 and the edge profiles 23 represent profiles 3 in the sense of the present invention, on which sealing sheets 1, each bridge a Dehnfugenspalt D or cover this, are fixed with their thickened, profiled edge portions 2. In view of the fact that corresponding multicellular expansion joint bridging devices are well known, inter alia by documents cited at the beginning of the prior art, the disclosure content of which is expressly incorporated by reference into the subject matter of the present patent application Fig. 5 omitted construction.

Bei einer eingebauten Dehnfugen-Überbrückungsvorrichtung der in Fig. 5 gezeigten Art lässt sich, um die Dichtigkeit der Anbindung der Dichtungsbahnen 1 an die Profile 3 zu verbessern, die vorliegende Erfindung beispielsweise in der in Fig. 6 veranschaulichten Weise anwenden. Zunächst wird in den die Aufnahmenut 4 nach unten hin begrenzenden Steg 24 der Lamellen 21 bzw. der Randprofile 23 - durch Bohren und Gewindeschneiden - eine Gewindebohrung 25 eingebracht, die in dem innerhalb der Aufnahmenut 4 bestehenden, von deren Innenwand sowie der Außenfläche des Randabschnittes 2 der Dichtungsbahn 1 begrenzten unteren Hohlraum 26 mündet. Das Herstellen der Gewindebohrung kann dabei durch den unteren Steg 27 der betreffenden Lamelle, d.h. durch eine diesen durchsetzende Hilfsbohrung 28 hindurch erfolgen.In a built-in expansion joint bridging device of in Fig. 5 In order to improve the tightness of the connection of the sealing sheets 1 to the profiles 3, the present invention can be used, for example, in the present invention Fig. 6 Apply illustrated way. First, in the receiving groove 4 downwardly delimiting web 24 of the lamellae 21 and the edge profiles 23 - introduced by drilling and tapping - a threaded bore 25 in the existing within the receiving groove 4, from the inner wall and the outer surface of the edge portion of the second the geomembrane 1 limited lower cavity 26 opens. The manufacture of the threaded hole can through the lower Ridge 27 of the relevant lamella, ie by a passing through this auxiliary bore 28 through.

In die Gewindebohrung 25 wird anschließend ein Schmiernippel 12 eingeschraubt. Die Gewindebohrung stellt einen Injektionskanal 29 für durch den Schmiernippel 12 hindurch in den unteren Hohlraum 26, der auf diese Weise einen Dichthohlraum 30 bildet, einzubringendes Dichtmedium 31 dar. Insoweit gelten die vorstehenden Erläuterungen, auf die zur Vermeidung von Wiederholungen verwiesen wird, in entsprechender Weise.In the threaded hole 25, a grease nipple 12 is then screwed. The threaded hole constitutes an injection channel 29 for sealing medium 31 to be introduced through the lubricating nipple 12 into the lower cavity 26, which in this way forms a sealing cavity 30. In this respect, the above explanations, which are referred to to avoid repetition, apply correspondingly ,

Die Hilfsbohrung 28 wird nach Abschluss der Sanierungsarbeiten an der Dehnfugen-Überbrückungsvorrichtung wieder verschlossen und gegen Korrosion geschützt.The auxiliary bore 28 is closed after completion of the renovation work on the expansion joint bridging device and protected against corrosion.

Claims (17)

  1. An expansion joint bridging device in the form of a road joint in road construction, comprising two profiles (3) that can move relative to each other with a variable-width expansion joint gap (D) situated between the latter, over which extends a deformable liner sheet (1), which is fixed to the two profiles on the edges, wherein the liner sheet exhibits thickened, profiled edge sections (2), which each are positively accommodated in an allocated receiving groove (4) of the respective profile, wherein the receiving grooves (4) incorporate cavities (8, 9) bordered by the latter and the edge section (2) of the liner sheet (1) respectively accommodated therein, characterized in that each profile (3) exhibits at least one injection channel (15, 17, 29), which empties into the allocated receiving groove (4), wherein the cavities (8, 9) are filled with a sealing medium (14, 13) subsequently introduced therein through the at least one injection channel (15, 17, 29).
  2. The expansion joint bridging device according to claim 1, characterized in that the profiles (3) each exhibit injection channels (15, 17, 29) distributed along their extension.
  3. The expansion joint bridging device according to claim 1 or claim 2, characterized in that the at least one injection channel (15) can be accessed from above.
  4. The expansion joint bridging device according to claim 1 or claim 2, characterized in that the at least one injection channel (17, 29) can be accessed from below.
  5. The expansion joint bridging device according to claim 4, characterized in that the at least one injection channel (15, 17, 29) is sealed by means of a reflux sealing nipple.
  6. The expansion joint bridging device according to one of claims 1 to 5, characterized in that the cavity (8, 9) is formed by a defined sealing cavity (16, 18, 30) that is bordered by the inner wall of the receiving groove (4) and the outer surface of the edge section (2) of the liner sheet (1) accommodated therein, and extends in the longitudinal direction of the respective edge section.
  7. The expansion joint bridging device according to claim 6, characterized in that several sealing cavities (16, 18, 30) are arranged in each of the receiving grooves (4).
  8. The expansion joint bridging device according to claim 7, characterized in that the sealing cavities (16, 18, 30) arranged inside a receiving groove (4) are separated from each other by a lip seal (7) of the allocated edge section (2) of the liner sheet (1).
  9. The expansion joint bridging device according to claim 7, characterized in that the sealing cavities (16, 18, 30) arranged inside a receiving groove (4) are separated from each other by a rib seal formed on the inner wall of the receiving groove.
  10. The expansion joint bridging device according to claims 1 and 6, characterized in that the injection channel (15, 17, 29) empties in the defined sealing cavity (16, 18, 30), and the latter is filled with the sealing medium (14, 31) through the injection channel.
  11. The expansion joint bridging device according to one of claims 1 to 10, characterized in that the sealing medium (14, 31) is water swellable.
  12. The expansion joint bridging device according to one of claims 1 to 11, characterized in that the sealing medium (14, 31) consists of a two-component sealing medium, whose viscosity increases after introduced into the cavity.
  13. The expansion joint bridging device according to claim 12, characterized in that the two-component sealing medium consists of a polyurethane resin.
  14. The expansion joint bridging device according to claim 12, characterized in that the two-component sealing medium forms a hydrogel in the reacted state.
  15. The expansion joint bridging device according to claim 14, characterized in that the two-component sealing medium consists of an acrylate resin.
  16. The expansion joint bridging device according to one of claims 12 to 15, characterized in that the two-component sealing medium exhibits a processing viscosity at 25°C of less than 180 mPas, preferably a processing viscosity at 20°C of less than 5 mPas.
  17. A method for renovating an existing expansion joint bridging device designed as a road joint in road construction, which encompasses two profiles (3) that can move relative to each other with a variable-width expansion joint gap (D) situated between the latter, over which extends a deformable liner sheet (1), which is fixed to the two profiles on the edges, wherein the liner sheet exhibits thickened, profiled edge sections (2), which each are positively accommodated in an allocated receiving groove (4) of the respective profile, in which cavities (8, 9) present in the receiving grooves and bordered by the latter and the respective edge section of the liner sheet accommodated therein are filled with a sealing medium (14, 31) subsequently introduced therein through injection channels (15, 17, 29) arranged in the profiles (3) and emptying into the respectively allocated receiving groove (4).
EP08021039A 2008-12-04 2008-12-04 Expansion joint bridging device Not-in-force EP2194190B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08021039A EP2194190B1 (en) 2008-12-04 2008-12-04 Expansion joint bridging device

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Application Number Priority Date Filing Date Title
EP08021039A EP2194190B1 (en) 2008-12-04 2008-12-04 Expansion joint bridging device

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EP2194190A1 EP2194190A1 (en) 2010-06-09
EP2194190B1 true EP2194190B1 (en) 2012-07-25

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102021885B (en) * 2011-01-04 2012-02-15 上海市城市建设设计研究院 Bridge deck continuous seam structure
DE202012103837U1 (en) * 2012-10-08 2014-01-13 René Scheitenberger Dehnfugenprofilsystem

Citations (1)

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DE3739717C1 (en) * 1987-11-24 1989-03-16 Kober Ag Device for bridging expansion joints

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US4305680A (en) 1979-12-03 1981-12-15 Old North Manufacturing Co., Inc. Roadway joint and seal and method of fabricating same
DE8010697U1 (en) 1980-04-18 1980-07-24 Donau-Eisen Stahlbau Gmbh, 8070 Ingolstadt DEVICE FOR BRIDGING AN EXPANSION JOINT
DE3522864A1 (en) 1985-06-26 1987-01-08 Maurer Friedrich Soehne Device for bridging expansion joints, in particular in concrete bridges
DE8816536U1 (en) 1988-10-19 1989-11-30 Kober Ag, Glarus Sealing device for sealing structural expansion joints, especially for roadway crossings
DE4138347C3 (en) 1991-11-21 1999-05-20 Alfred Hartkorn Waterproof joint bridging construction for bridges or similar structures
US5228255A (en) * 1992-04-28 1993-07-20 The Atlantic Group, Inc. Method and apparatus for improved belt type expansion joints
DE4433909C2 (en) 1994-09-22 1997-11-27 Alfred Hartkorn Joint bridging device
JP3954673B2 (en) 1996-11-01 2007-08-08 株式会社ヤマックス Joint for water stop of concrete joints
DE19630328C2 (en) 1996-07-26 1999-11-18 Maurer Friedrich Soehne Bridging device for joint gaps
DE19803004A1 (en) 1997-01-27 1998-08-13 Alfred Hartkorn Joint-bridging structure in bridge
DE19705531C2 (en) 1997-02-13 2001-07-05 Maurer Friedrich Soehne Device for bridging expansion joints
CN1194141C (en) 2000-09-26 2005-03-23 毛勒·索尼公司 Tooth rack system for device for bridging expansion joints
US20050171248A1 (en) * 2004-02-02 2005-08-04 Yanmei Li Hydrogel for use in downhole seal applications
EP1621674A1 (en) 2004-07-30 2006-02-01 Mageba S.A. Bridging device
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DE3739717C1 (en) * 1987-11-24 1989-03-16 Kober Ag Device for bridging expansion joints

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