EP0231525B1 - Track junction for expansion joints in railroad bridge decks - Google Patents

Track junction for expansion joints in railroad bridge decks Download PDF

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Publication number
EP0231525B1
EP0231525B1 EP86118112A EP86118112A EP0231525B1 EP 0231525 B1 EP0231525 B1 EP 0231525B1 EP 86118112 A EP86118112 A EP 86118112A EP 86118112 A EP86118112 A EP 86118112A EP 0231525 B1 EP0231525 B1 EP 0231525B1
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EP
European Patent Office
Prior art keywords
edge
profile
expansion profile
track
expansion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP86118112A
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German (de)
French (fr)
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EP0231525A1 (en
Inventor
Hermann Wegener
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Mageba GmbH
Original Assignee
Glacier GmbH Sollinger Huette GmbH
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Publication date
Application filed by Glacier GmbH Sollinger Huette GmbH filed Critical Glacier GmbH Sollinger Huette GmbH
Priority to AT86118112T priority Critical patent/ATE47441T1/en
Publication of EP0231525A1 publication Critical patent/EP0231525A1/en
Application granted granted Critical
Publication of EP0231525B1 publication Critical patent/EP0231525B1/en
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/06—Arrangement, construction or bridging of expansion joints

Definitions

  • the invention relates to a roadway transition for expansion joints at railway bridges, with an elastic, extending along a road joint expansion profile, which is supported on its edge area on both sides of the road joint each a rigid edge profile attached to a substructure, and with a supporting the expansion profile from below Support device.
  • Transitional structures that are used for expansion joints on railway bridges must be installed under the ballast surface that supports the track structure.
  • this creates certain problems if e.g. in such a transition construction, the expansion profile must be expanded or renewed for some reason.
  • the expansion profile must be extended upwards in this case.
  • this makes it necessary that the corresponding railway line must be shut down during the time of expansion, which leads to changes in the timetable and other conclusions and is generally associated with very considerable costs.
  • small support bridges have to be installed on the track in order to bridge the area in which the expansion is being carried out, and to provide intermediate support for the sleepers when the ballast is removed to expand the expansion profile.
  • block-like expansion profiles are preferably used, which are provided with suitable supporting ribs, cavities or the like. are provided and which are able to bridge the displacement path occurring in the joint due to their elastic extensibility.
  • DE-A 1 459 736 describes a carriageway crossing for two sections of a traffic area, for example a road or a road surface of a bridge, in which an elastic expansion profile is held under compression between rigid edge profiles arranged on its edge regions and each fastened to a substructure and is supported downward by an angled support bracket attached to one of the same by welding. Furthermore, the expansion profile is also held by rectangular holding rods welded to the side edge profiles, which protrude into correspondingly shaped lateral receiving grooves in the expansion profile, as a result of which this is held in position. These side bars also have a supporting effect downwards, whereas the lower angle support beam can only have a more or less strong supporting effect depending on the size of the gap narrowing or gap expansion.
  • the expansion joint is also closed further below by a cover film which protrudes laterally into the concrete parts and is therefore likewise not removable.
  • a relatively complex installation is necessary, to which, in the lateral ceiling parts of the street or the like.
  • lateral recesses must first be provided in order to create free assembly spaces above the expansion joint.
  • special tensioning rails must be used, on the underside of which the rigid edge profiles are fastened with the rotating profile in between and then moved towards each other by tensioning bolts until the expansion profile has received the desired compression.
  • the expansion profile extending along the carriageway joint is held at its edge areas on both sides of the carriageway joint by a rigid edge profile attached to the substructure of the bridge protection concrete there.
  • a support device designed in the form of a metal edge construction which is firmly connected to the end supports of the bridge and / or the bridge abutments and extends on the underside of the expansion profile, this is supported from below.
  • the surface of the expansion profile is in a line with the surface of the lateral protective concrete layers of the bridge, and the ballast for receiving the track sleepers is applied directly to the surface of the protective concrete and expansion profile.
  • the invention has for its object to develop a transition construction of the type mentioned in such a way that the expansion of the expansion profile is considerably simplified, greatly accelerated and significantly cheaper and the disadvantages mentioned at the outset, which occur in known transition structures (such as blocking the route, installation) an intermediate support or similar) can be avoided.
  • the overall arrangement of the carriageway transition is designed so that the expansion profile can be inserted from below into the space between the two edge profiles during assembly
  • the support device is designed in the form of at least one holding plate, the at least one holding plate within the gap , which is formed between the substructures on both sides of the carriageway joint, is arranged so that it is fully accessible from below, that the at least one holding plate is detachably attached to a support element and that the top of the expansion profile is provided with a slot-like opening, which rests laterally on top of the edge profiles Cover plate is covered.
  • the solution according to the invention makes it possible for the first time that the expansion profile can be expanded from the underside of the carriageway transition without having to remove the ballast on the top.
  • To dismantle the expansion profile it is only necessary to undo the fastening means from the underside of the carriageway transition construction with which the existing retaining plate (s), which are / are fully accessible from below, are then removed, after which the retaining plate is removed (n) down is possible without problems. Then the expansion profile can then be pulled out downwards, since it was also inserted from below during the first assembly into the space between the edge profiles.
  • the roadway crossing according to the invention enables a surprisingly simple improvement in the replacement of the expansion profile with surprisingly simple means.
  • the costs as well as the time required for changing the profile are reduced to a minimum and, moreover, a disruption to the timetable or the train traffic above the roadway crossing construction is completely avoided. It is highly surprising to the person skilled in the art that this can be achieved at the same time without increased structural complexity, but rather with the simplest means.
  • the cover plate is provided as a support element for the lower holding plate and the holding plate is fastened to it by means of screws extending through the expansion profile.
  • the presence of the rigid cover plate is also used for its use as a support element for the lower holding plate, so that the attachment of very special support elements, for example on the base of the bridge structure, can be omitted.
  • a distance is formed between each end edge of the holding plate and the corresponding edge profile facing it, which is at least the size of the entire deformation path for which the expansion profile is designed. In this way, the expansion profile can be supported from below over a relatively wide area, and at the same time sufficient space is available for the lateral deformation paths of the expansion profile that occur.
  • the carriageway transition according to the invention is that two lateral holding plates are provided, each of which is releasably attached to a supporting element projecting from the corresponding substructure on one side of the carriageway joint towards the other substructure (i.e. the substructure on the opposite side of the carriageway joint).
  • the cover plate is no longer used, but now special support elements attached to the substructure on both sides of the road joint are used, which nevertheless results in an overall arrangement which is simple in construction and can be assembled easily and without problems.
  • each edge profile has a cross-section lying on the side edges of the expansion profile above its height and an edge strip covering the corresponding edge region of the expansion profile from the top
  • the cover plate on both sides of the joint edge rests on the edge strips of the edge profiles and the two support elements project to the lower end edge of the side bar of the respective edge profile facing the expansion profile.
  • the edge strips below the rigid edge profiles are brought so far to the opening for the expansion profile formed by the two edge profiles on the underside of the roadway that this opening in particular remains free for the installation and removal of the expansion profile, but otherwise the supporting elements are as far as the corresponding ones Extend opening edges on the underside of the edge strips.
  • each holding plate is screwed to the support element in the area of the side web of the corresponding edge profile.
  • Another preferred embodiment of the roadway crossing according to the invention can also be achieved in that the edge profiles and the support elements themselves are not designed as separate components, but rather that the edge profiles are provided as part of the support elements themselves, ie are integrated with them in a common component.
  • the fixing or attachment of the cover plate on the top of the expansion profile is preferably effected by the fact that at the bottom of the profile along its central region, spaced apart spacers are attached through the gap between the mutually facing end edges of the two holding plates, at the end of which one or more, extending over the length of the joint, projecting beyond the ends of the holding plates on both sides of the gap
  • Counter-pressure plate (s) is / are arranged, the lateral end regions of which are displaceable relative to the underside of the holding plates and which are screwed to the cover plate through the spacers and the expansion profile.
  • the end regions of the counterpressure plate (s) which bear against the underside of the holding plate are preferably provided with a friction-reducing coating, preferably a coating made of a polyimide or polytetrafluoroethylene.
  • the spacers are preferably attached to the bottom of the expansion profile in that the spacers are vulcanized thereon.
  • the counterpressure plate preferably covers each side holding plate by at least the full deformation path of the expansion profile, which ensures that even when the largest deformations occur there is still sufficient lateral coverage and thus the desired bilateral support of the counterpressure plate on both side holding plates.
  • reinforcing ribs arranged transversely to the longitudinal axis of the joint are arranged on the cover plate, such reinforcing ribs being arranged particularly advantageously at all screwing-in points of fastening screws for the counter-pressure plate (s) and / or the holding plate (s) .
  • the reinforcement ribs are of great value, in particular when expanding the expansion profile, because they enable the load on the cover plate to be better absorbed by the ballast and the traffic loads.
  • Such reinforcing ribs are preferably attached to the cover plate by welding.
  • each holding plate over the length of the joint consists of a plurality of individual plate sections (plate sections) arranged next to one another, which are independently detachably attached to the relevant support elements. This allows better handling of the counter-pressure plates by dividing them into handy section lengths.
  • Fig. 1 a basic sectional view of a joint transition construction (without ballast and tracks) for a railway bridge is shown, with which a carriageway joint F is bridged.
  • the bridge On both sides of the carriageway joint F, the bridge is provided at the top with a layer of bridge protection concrete 1 a and 1 b, respectively, which is supported by a bridge insulation 13 on a substructure 21 a and 21 b, respectively.
  • the transition construction has a block expansion profile 2 made of a suitable elastic material, preferably an elastomeric material, which is positively clamped or held laterally by rigid strip-shaped edge profiles 3 or 4, these edge profiles 3 and 4 simultaneously being on the outside as well Contact surface and support for the adjacent bridge protection concrete layers 1a and 1b serve.
  • edge profiles 3 and 4 are also laterally form-fitting (in the example shown in Fig. 1, to which express reference is made) sealing tapes 5, which are connected to the bridge insulation 13 on the respective side via a sealing intermediate layer 26 and ensure that there is a corresponding lateral seal at the bottom.
  • the elastic expansion profile 2 has a cross section such that it has a substantially continuous surface formed from a plurality of adjacent longitudinal strips on its upper side, which is at the same height as the surface of the side edge profiles 3 and 4.
  • a large number of staggered profile recesses 27 are provided in the interior of the expansion profile 2 and extend in the longitudinal direction of the profile result in the desired expansion behavior of the expansion profile 2.
  • the two rigid lateral edge profiles 3 and 4 have, seen in cross section, a side web 3a or 4a which lies against the side edges of the expansion profile 2 above its height and which at its upper end projects with an edge strip 3b or 3b projecting at right angles in the direction of the expansion profile 2 4b is provided, at the free end of which a bulge which bulges downward is formed.
  • the side web 3b, 4b formed in this way of the rigid edge profiles 3, 4 thus covers the expansion profile 2 in a certain edge area from above, as shown in FIG. 1, reference being expressly made to the drawing there.
  • cover plate 14 On the top of the arrangement of extension profile 2 and subsequent rigid side edge profiles 3 and 4 lying in one plane there is a cover plate 14 which closes the top and which not only covers the space filled in above by expansion profile 2, but also laterally the surface of the edge profiles 3 or 4 present there extends out and is supported on the top thereof.
  • elongated slot-shaped transverse openings 16 are arranged in the cover plate 14 at intervals, which are aligned at right angles to the longitudinal axis of the cover plate 14.
  • the cover plate 14 which is slotted in this way, bridges the entire expansion joint construction and supports the ballast downwards, in particular if, for the purpose of assembling or disassembling the expansion profile 2, this is to be removed or installed from its lateral brackets by the rigid edge profiles 3 and 4.
  • the openings 16 in the cover plate have the task of creating free exit for the ballast abrasion that is washed under the cover plates (which cannot be prevented in practice). At the same time, however, it is also prevented that the ballast abrasion could build up and crust under the cover plate.
  • stiffening ribs 15 On the surface of the cover plate 14 are also, at certain intervals from each other, stiffening ribs 15 between the elongated openings 16 at the locations where screwings are made from below into the plate, to which we will have to come back. These stiffening ribs 15 are also aligned perpendicular to the longitudinal axis of the cover plate 14.
  • substructures for the transition structure which are provided on both sides of the carriageway joint F above directly in the area of the end of the bridge protection concrete layers 1 a, 1 b.
  • These substructures which are generally designated by 21 a and 21 b in FIG. 1, have anchors 22 to which corresponding support elements 7 for the transition construction are welded.
  • these support elements 7 protrude directly below the bridge insulation 13 up to the respectively lower end edge 20 of the respective side web 3a or 4a of the edge profiles 3 or 4 facing the expansion profile 2.
  • the transition structure is supported in the entire edge area, these projections of the support elements 7 also simultaneously covering the lateral rigid edge profiles 3, 4 over their full lower surface.
  • the support elements 7 support the rigid edge profiles 3 and 4 from their underside, they also serve as fastening elements for two holding plates 6a and 6b attached laterally below the expansion profile 2, which can be detached from the support elements 7 from below by means of screws 8 are attached.
  • These two holding plates 6a and 6b are designed such that they support the lower surface of the expansion profile 2 from the two sides up to a central region.
  • the expansion profile 2 is clamped between the respective holding plate 6a or 6b on the one hand and the edge strips 3b or 4b of the edge profiles 3 and 4 projecting inwards at the top when the holding plates 6a, 6b are screwed on, so that overall a firm mounting of the Expansion profile 2 is reached within the overall construction.
  • the mutually facing end edges 19a, 19b of the holding plates 6a, 6b form between them a free gap a, via which the expansion profile 2 is not supported by the holding plates from below.
  • a free gap a via which the expansion profile 2 is not supported by the holding plates from below.
  • spacers 9 which extend perpendicularly over the entire height of the gap a and on the underside of which a pressure plate 10 projecting on both sides is arranged, which overlaps the side holding plates 6a and 6b with their two lateral end regions from below, as is shown in FIGS. 1 to 3.
  • the two ends of the counter-pressure plate 10 each lie from below on the corresponding undersides of the side holding plates 6a and 6b so as to be displaceable relative to the latter, the friction-reducing linings 12 (approximately made of PTFE) are provided.
  • the counter-pressure plate 10 is in turn fastened to the cover plate 14 by means of screws 11, which run through the spacers 9 and the expansion profile 2.
  • the position of the spacers is 9 or the screws 11 chosen so that on the top of the cover plate 4 there is a stiffening rib 15 at each screw-in point, so that the screw-in end of the screws 11 has a sufficiently large screw-in length on the cover plate 14 as a result of the stiffening ribs 15.
  • the horizontally movable counter-pressure plate 10 which is screwed through the expansion profile 2 with the slotted cover plate 14 and the reinforcements 15, prevents the cover plate 14 from the surface of the expansion joint construction (which is formed by the surface of the side edge profiles 3, 4 and could lift off the surface of the expansion profile 2).
  • the counter-pressure plate 10 is not designed as a single single plate extending over the entire length of the road joint, but is divided into a plurality of individual plates which are available in handy section lengths and can be installed in a correspondingly simplified manner. These individual plates are arranged side by side and in their entirety then form the counter-pressure plate 10 which extends over the entire length of the road joint, the individual plates being screwed to the cover plate 14 independently of one another by their own screws 11.
  • 3 and 4 now show basic perspective sectional representations, which represent these carriageway transitions for railway bridges in the installed state. 3 and 4, just like in FIGS. 1 and 2, the same elements continue to be provided with the same reference numerals.
  • FIG. 3 shows (albeit in a somewhat simplified manner) such a perspective sectional illustration of the installed state of a roadway crossing, as was already shown in FIG. 1, while FIG. 4 illustrates another embodiment.
  • FIGS. 3 and 4 clearly show how such a carriageway crossing is arranged at a railway bridge over a carriageway joint F of width S and under a ballast fill 23 on which the rail sleepers 24 carrying the rails 25 are arranged.
  • the ballast fill 23 is only shown in the rear part of the drawing, while in the front part of the drawing both the ballast fill and the track construction for exposing and perspective illustration of the carriageway transition are omitted.
  • FIG. 3 and 4 show the carriageway transition construction extending in the longitudinal direction of the joint with the expansion profile 2 and the lateral edge profiles 3, 4, with only one stiffening rib 15 on the top of the cover plate 14 (with the thread position indicated for screwing in a fastening screw for the holding plate 6 or the pressure plate 10) is shown.
  • the rigid lateral edge profiles 3 and 4 are designed in a different way than in the representations of FIGS. 1 to 3: in FIG.
  • lateral rigid edge profiles 3, 4 are used, which in turn are used have a vertically extending side web, which also extends over the entire height of the expansion profile 2, but this time, not on the upper side, but on its underside, it has a supporting angled portion (and this time in the direction of the joint outside).
  • This angling engages under the protruding extensions of the support elements 7 in a similar manner, as is the case for the holding plates 6a and 6b in the illustration in FIG. 3 (cf. also FIG. 1).
  • the lateral holding plates 6a and 6b each support the expansion profile 2 from below, in the embodiment according to FIG.
  • a single holding plate 6 is provided, namely in the central region of the expansion profile 2, extending in its longitudinal direction is arranged.
  • This holding plate 6 is via screw, not shown in Fig. 4 ben, which extend through the expansion profile 2, to the cover plate 14, which completely covers the expansion profile 2 and which is also supported in its lateral areas at the top on the edge profiles 3 and 4.
  • a stiffening rib 15 is provided for each fastening point, which, like the slot-shaped openings 16 in the cover plate 14 itself, extends perpendicular to the longitudinal central axis of the cover plate 14. In this way, the expansion profile 2 is clamped between the cover plate 14 and the holding plate 6, with the result that, in this embodiment, the cover plate 14 can not accidentally move relative to the expansion profile 2 or detach from it.
  • the side edges 18a and 18b of the holding plate 6 are located (assuming the idle state of the overall construction, ie the state in which no deformation path occurs) at a distance A from the lateral edge strips 3 and 4, respectively, this distance A being of a size corresponds to the length of the entire deformation path for which the expansion profile 2 is designed. This ensures that even with a full one-sided deflection of the expansion profile 2, the retaining plate 6 cannot come into contact laterally against the edge profiles 3 or 4 and that a certain residual gap still remains, which also allows the expansion profile to bulge downwards.
  • the expansion profile is to be removed and reinstalled in the arrangement shown in FIG. 4, it is only necessary to open the fastening screws for the holding plate 6 from below and then the holding plate 6 (which is in one piece or in side by side over the entire length of the carriageway transition separate plates can be carried out - see also the explanations for Fig. 1 -). Thereafter, the expansion profile 2 can be removed or exchanged without problems and the desired other profile inserted, after which the holding plate 6 is then again placed from below and again connected to the cover plate 14 via the fastening screws.

Abstract

1. Track junction for expansion joints in railway bridges with an elastic expansion profile (2) which extends along a track joint (F) and is held on its edge region on both sides of the track joint by means of a rigid edge profile (3, 4) fixed on a base (21a, 21b), and with a support arrangement which supports the expansion profile from below, characterised in that during assembly the space between the two edge profiles (3, 4) ; the support arrangement is constructed in the form of at least one holding plate (6; 6a, 6b), at least one holding plate (6; 6a, 6b) being arranged so as to be fully accessible from below inside the gap (S) which is constructed between the bases on both sides of the track joint ; at least one holding plate (6; 6a, 6b) is releasably mounted on a support element (7, 14) ; and the upper face of the expansion profile (2) is covered by a cover plate (14) which rests laterally on top of the edge profiles (3, 4).

Description

Die Erfindung bezieht sich auf einen Fahrbahnübergang für Dehnfugen bei Eisenbahnbrücken, mit einem elastischen, sich längs einer Fahrbahnfuge erstreckenden Dehnprofil, das an seinen Randbereich beidseits der Fahrbahnfuge jeweils eines an einem Unterbau befestigten starren Randprofiles gehaltert ist, und mit einer das Dehnprofil von unten her abstützenden Abstützeinrichtung.The invention relates to a roadway transition for expansion joints at railway bridges, with an elastic, extending along a road joint expansion profile, which is supported on its edge area on both sides of the road joint each a rigid edge profile attached to a substructure, and with a supporting the expansion profile from below Support device.

Übergangskonstruktionen, die für Dehnfugen bei Eisenbahnbrücken eingesetzt werden, müssen dort unter dem die Gleiskonstruktion abstützenden Schotterbelag eingebaut werden. Hierdurch ergeben sich jedoch gewisse Probleme, wenn z.B. bei einer solchen Ubergangskonstruktion das Dehnprofil aus irgendwelchen Gründen ausgebaut oder erneuert werden muß. Bei den bekannten Übergangskonstruktionen muß für diesen Fall der Ausbau des Dehnprofiles nach oben erfolgen. Dies macht es allerdings erforderlich, daß dann während der Zeit des Ausbaus die entsprechende Bahnstrecke stillgelegt werden muß, was zu Fahrplanänderungen und sonstigen Folgerungen führt und in aller Regel mit ganz erheblichen Kosten verbunden ist. Dabei müssen überdies kleine Stützbrücken an der Strecke eingebaut werden, um den Bereich, in dem ausgebaut wird, zu überbrücken, und dabei eine Zwischenabstützung für die Schwellen zu schaffen, wenn der Schotter zum Ausbau des Dehnprofiles entfernt wird.Transitional structures that are used for expansion joints on railway bridges must be installed under the ballast surface that supports the track structure. However, this creates certain problems if e.g. in such a transition construction, the expansion profile must be expanded or renewed for some reason. In the known transition constructions, the expansion profile must be extended upwards in this case. However, this makes it necessary that the corresponding railway line must be shut down during the time of expansion, which leads to changes in the timetable and other conclusions and is generally associated with very considerable costs. In addition, small support bridges have to be installed on the track in order to bridge the area in which the expansion is being carried out, and to provide intermediate support for the sleepers when the ballast is removed to expand the expansion profile.

Bei bekannten Übergangskonstruktionen werden vorzugsweise blockartige Dehnprofile eingesetzt, die mit geeigneten Tragrippen, Hohlräumen o.ä. versehen sind und die den auftretenden Verschiebeweg in der Fuge infolge ihrer elastischen Dehnbarkeit zu überbrücken vermögen.In known transition constructions, block-like expansion profiles are preferably used, which are provided with suitable supporting ribs, cavities or the like. are provided and which are able to bridge the displacement path occurring in the joint due to their elastic extensibility.

In der DE-A 1 459 736 ist ein Fahrbahnübergang für zwei Abschnitte einer Verkehrsfläche, etwa einer Straßen- oder einer Fahrbahndecke einer Brücke, beschrieben, bei dem ein elastisches Dehnprofil unter Kompression zwischen an seinen Randbereichen angeordneten, jeweils an einem Unterbau befestigten starren Randprofilen gehalten und nach unten durch einen an einem derselben durch Schweißung befestigten Winkel-Stützträger abgestützt ist. Ferner ist das Dehnprofil auch noch über reckteckige, an den seitlichen Randprofilen angeschweißte Haltestangen gehaltert, die in entsprechend geformte seitliche Aufnahmenuten des Dehnprofiles hineinragen, wodurch diese in Lage gehalten wird. Dabei wirken diese seitlichen Stangen ebenfalls abstützend nach unten, wohingegen der untere Winkel-Stützträger je nach der Größe der Spaltverengung bzw. Spaltausdehnung nur mehr oder weniger stark stützend wirksam werden kann. Die Dehnfuge ist ferner noch weiter unterhalb durch eine Abdeckfolie verschlossen, die seitlich in die Betonteile hineinragt und demgemäß ebenfalls nicht entfernbar ist. Bei dieser bekannten Konstruktion ist ein relativ aufwendiger Einbau nötig, zu dem in den seitlichen Deckenteilen der Straße o.ä. zunächst seitliche Ausnehmungen vorgesehen werden müssen, um oberhalb der Dehnfuge freie Montageräume zu schaffen. Sodann müssen spezielle Spannschienen eingesetzt werden, an deren Unterseite die starren Randprofile mit dem Drehprofil dazwischen angeordnet befestigt sowie anschließend durch Spannbolzen soweit aufeinanderzu bewegt werden müssen, bis das Dehnprofil die gewünschte Kompression erhalten hat. Schließlich wird alles von oben her über der Dehnfuge herabgelassen, wobei die seitlichen Ausnehmungen eine Aufnahme der dort vorhandenen Teile der Spannschienen usw. ermöglichen und wonach die Montageräume mit Beton ausgegossen sowie anschließend die Spannschienen und die Bolzen entfernt werden. Wegen der Abdeckfolie sowie der Winkel-Stützträger ist diese Übergangskonstruktion nicht von unten zugänglich, weshalb im Falle eines Auswechselns des Dehnprofiles die entsprechenden Auswechselarbeiten ausschließlich von oben ausgeführt werden können. Dabei ist das Auswechseln nicht weniger umständlich und zeitaufwendig als der anfängliche Einbau. Wollte man dieses bekannte Dehnprofil unter einem die Gleiskonstruktion abstützenden Schotterbelag bei einer Eisenbahnbrücke einsetzen (ein Anwendungsfall, der in der DE-A 1 459 736 nicht beschrieben ist), dann ergäben sich alle Nachteile, die weiter oben schon aufgezeigt wurden.DE-A 1 459 736 describes a carriageway crossing for two sections of a traffic area, for example a road or a road surface of a bridge, in which an elastic expansion profile is held under compression between rigid edge profiles arranged on its edge regions and each fastened to a substructure and is supported downward by an angled support bracket attached to one of the same by welding. Furthermore, the expansion profile is also held by rectangular holding rods welded to the side edge profiles, which protrude into correspondingly shaped lateral receiving grooves in the expansion profile, as a result of which this is held in position. These side bars also have a supporting effect downwards, whereas the lower angle support beam can only have a more or less strong supporting effect depending on the size of the gap narrowing or gap expansion. The expansion joint is also closed further below by a cover film which protrudes laterally into the concrete parts and is therefore likewise not removable. In this known construction, a relatively complex installation is necessary, to which, in the lateral ceiling parts of the street or the like. lateral recesses must first be provided in order to create free assembly spaces above the expansion joint. Then special tensioning rails must be used, on the underside of which the rigid edge profiles are fastened with the rotating profile in between and then moved towards each other by tensioning bolts until the expansion profile has received the desired compression. Finally, everything is lowered from above over the expansion joint, the lateral recesses allowing the parts of the tensioning rails, etc., to be accommodated, and then the assembly spaces are poured with concrete and then the tensioning rails and the bolts are removed. Because of the cover film and the angle support beam, this transition construction is not accessible from below, which is why the corresponding replacement work can only be carried out from above if the expansion profile is replaced. The replacement is no less cumbersome and time-consuming than the initial installation. If one wanted to use this known expansion profile under a ballast surface supporting the track construction on a railway bridge (an application which is not described in DE-A 1 459 736), then all the disadvantages would result, which have already been shown above.

Bei einer anderen bekannten Übergangskonstruktion (Typ Sollinger Hütte T 80) ist das sich längs der Fahrbahnfuge erstreckende Dehnprofil an seinen Randbereichen beidseits der Fahrbahnfuge jeweils über ein am dortigen Unterbau des Brückenschutzbetons befestigtes starres Randprofil gehaltert. Mittels einer in Form einer Metall-Randkonstruktion ausgebildeten Abstützeinrichtung, die mit den Endträgern der Brücke und/oder den Brückenwiderlagern fest verbunden ist und sich auf der Unterseite des Dehnprofiles erstreckt, wird dieses von unten her abgestützt. Die Oberfläche des Dehnprofiles befindet sich dabei in einer Linie mit der Oberfläche der seitlichen Schutzbetonschichten der Brücke, und der Schotter für die Aufnahme der Gleisschwellen wird unmittelbar auf die Oberfläche von Schutzbeton und Dehnprofil aufgebracht. Soll hier nun aus irgendeinem Grund die Übergangskonstruktion ausgebaut oder das Dehnprofil ausgewechselt werden, ist es erforderlich, die nötigen Arbeiten für den Ausbau von der Fahrbahnoberseite her an der Übergangskonstruktion auszuführen. Dabei muß der Schotter entfernt werden und es treten die bereits einleitend genannten Nachteile solcher Konstruktionen auf. Das Auswechseln des Dehnprofiles ist dabei außerordentlich aufwendig und sehr zeit- und kostenintensiv.In another known transition construction (type Sollinger Hütte T 80), the expansion profile extending along the carriageway joint is held at its edge areas on both sides of the carriageway joint by a rigid edge profile attached to the substructure of the bridge protection concrete there. By means of a support device designed in the form of a metal edge construction, which is firmly connected to the end supports of the bridge and / or the bridge abutments and extends on the underside of the expansion profile, this is supported from below. The surface of the expansion profile is in a line with the surface of the lateral protective concrete layers of the bridge, and the ballast for receiving the track sleepers is applied directly to the surface of the protective concrete and expansion profile. If, for any reason, the transition structure is to be removed or the expansion profile replaced, it is necessary to carry out the necessary work on the transition structure from the top of the carriageway. The ballast must be removed and the disadvantages of such constructions already mentioned occur. The exchange of the expansion profile is extremely complex and very time and cost intensive.

Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, eine Übergangskonstruktion der eingangs genannten Art so weiterzubilden, daß der Ausbau des Dehnprofiles erheblich vereinfacht, stark beschleunigt und deutlich verbilligt wird und die einleitend genannten, bei bekannten Übergangskonstruktionen hierbei auftretenden Nachteile (wie Sperrung der Strecke, Einbau einer Zwischenabstützung o.ä.) vermieden werden.Proceeding from this, the invention has for its object to develop a transition construction of the type mentioned in such a way that the expansion of the expansion profile is considerably simplified, greatly accelerated and significantly cheaper and the disadvantages mentioned at the outset, which occur in known transition structures (such as blocking the route, installation) an intermediate support or similar) can be avoided.

Erfindungsgemäß wird dies bei einem Fahrbahnübergang der eingangs genannten Art dadurch erreicht, daß die Gesamtanordnung des Fahrbahnüberganges so ausgelegt wird, daß das Dehnprofil bei der Montage von unten her in den Raum zwischen den beiden Randprofilen einschiebbar ist, daß ferner die Abstützeinrichtung in Form mindestens einer Halteplatte ausgebildet ist, wobei die mindestens eine Halteplatte innerhalb des Spaltes, der zwischen den Unterbauten beidseits der Fahrbahnfuge ausgebildet wird, von unten her vollständig zugänglich angeordnet ist, daß weiterhin die mindestens eine Halteplatte an einem Stützelement lösbar befestigt und daß die Oberseite des Dehnprofiles von einem seitlich oben auf den Randprofilen aufliegenden, vorzugsweise mit schlitzartigen Öffnungen versehenen Abdeckblech abgedeckt ist.According to the invention, this will result in a roadway crossing of the type mentioned at the outset is sufficient that the overall arrangement of the carriageway transition is designed so that the expansion profile can be inserted from below into the space between the two edge profiles during assembly, and that the support device is designed in the form of at least one holding plate, the at least one holding plate within the gap , which is formed between the substructures on both sides of the carriageway joint, is arranged so that it is fully accessible from below, that the at least one holding plate is detachably attached to a support element and that the top of the expansion profile is provided with a slot-like opening, which rests laterally on top of the edge profiles Cover plate is covered.

Die erfindungsgemäße Lösung ermöglicht es erstmals, daß ein Ausbau des Dehnprofiles von der Unterseite des Fahrbahnüberganges her erfolgen kann, ohne daß dabei auf der Oberseite ein Abtragen des Schotters nötig wäre. Zur Demontage des Dehnprofiles ist es nur erforderlich, von der Unterseite der Fahrbahnübergangskonstruktion her die Befestigungsmittel, mit denen die vorhandene(n) Halteplatte(n), die ja von unten her vollständig zugänglich ist/sind, zu lösen, wonach dann eine Abnahme der Halteplatte(n) nach unten problemfrei möglich ist. Anschließend kann sodann das Dehnprofil nach unten herausgezogen werden, da es auch von unten bei der ersten Montage in den Raum zwischen den Randprofilen eingeschoben war. Durch das oberhalb der Randprofile angeordnete, sich an seinen beiden Seiten auf diesen abstützende Abdeckblech, das den gesamten Raum oberhalb des Dehnprofiles überdeckt, wird bei Ausbau des Dehnprofiles verhindert, daß der Schotter nach unten in den vorhandenen Raum hinabfallen könnte. Sodann kann von unten her ein neues Dehnprofil eingebaut und die Halteplatte(n) von unten her and dem zugehörigen Stützelement(en) wieder befestigt werden. Dabei bleibt in der Zwischenzeit die Bahnstrecke oberhalb des Fahrbahnübergangs voll einstatzfähig, wobei zu bemerken ist, daß das Auswechseln des Dehnprofiles auf diesem Wege überraschend schnell ausgeführt werden kann.The solution according to the invention makes it possible for the first time that the expansion profile can be expanded from the underside of the carriageway transition without having to remove the ballast on the top. To dismantle the expansion profile, it is only necessary to undo the fastening means from the underside of the carriageway transition construction with which the existing retaining plate (s), which are / are fully accessible from below, are then removed, after which the retaining plate is removed (n) down is possible without problems. Then the expansion profile can then be pulled out downwards, since it was also inserted from below during the first assembly into the space between the edge profiles. Due to the arranged above the edge profiles, which is supported on both sides on this cover plate, which covers the entire space above the expansion profile, is prevented when removing the expansion profile that the ballast could fall down into the existing space. A new expansion profile can then be installed from below and the holding plate (s) can be reattached to the associated support element (s) from below. In the meantime, the railway line above the carriageway crossing remains fully operational, although it should be noted that the expansion profile can be exchanged surprisingly quickly in this way.

Der erfindungsgemäße Fahrbahnübergang ermöglicht mit überraschend einfachen Mitteln eine ganz bemerkenswerte Verbesserung hinsichtlich des Auswechselns des Dehnprofiles. Die Kosten wie auch der zeitliche Aufwand für ein Auswechseln des Profiles werden auf ein Minimum reduziert und überdies eine Störung des Fahrplanes bzw. des Zugverkehrs oberhalb der Fahrbahnübergangskonstruktion völlig vermieden. Daß dies gleichzeitig ohne gesteigerten baulichen Aufwand, vielmehr mit einfachsten Mitteln erzielt werden kann, ist für den Fachmann in hohem Maße überraschend.The roadway crossing according to the invention enables a surprisingly simple improvement in the replacement of the expansion profile with surprisingly simple means. The costs as well as the time required for changing the profile are reduced to a minimum and, moreover, a disruption to the timetable or the train traffic above the roadway crossing construction is completely avoided. It is highly surprising to the person skilled in the art that this can be achieved at the same time without increased structural complexity, but rather with the simplest means.

Als besonders vorteilhaft hat es sich bei einem erfindungsgemäßen Fahrbahnübergang erwiesen, wenn das Abdeckblech gleich als Stützelement für die untere Halteplatte vorgesehen und die Halteplatte mittels sich durch das Dehnprofil hindurch erstreckender Schrauben an ihm befestigt ist. Bei dieser Ausgestaltung wird das Vorhandensein des steifen Abdeckbleches gleich auch noch zu dessen Verwendung als Stützelement für die untere Halteplatte ausgenützt, so daß die Anbringung ganz spezieller Stützelemente, etwa am Unterbau der Brückenkonstruktion, entfallen kann. Vorzugsweise wird hierbei im Einbauzustand, d.h. im unbelasteten Zustand des Dehnprofiles, zwischen jeder Endkante der Halteplatte und dem entsprechenden dieser zugewendeten Randprofil ein Abstand ausgebildet, der mindestens die Größe des gesamten Verformungsweges, für den das Dehnprofil ausgelegt ist, beträgt. Hierdurch läßt sich über einen relativ weiten Flächenbereich eine Abstützung des Dehnprofils von unten her erzielen, wobei gleichzeitig ausreichend Raum für die auftretenden seitlichen Verformungswege des Dehnprofiles zur Verfügung steht.In a carriageway transition according to the invention, it has proven particularly advantageous if the cover plate is provided as a support element for the lower holding plate and the holding plate is fastened to it by means of screws extending through the expansion profile. In this embodiment, the presence of the rigid cover plate is also used for its use as a support element for the lower holding plate, so that the attachment of very special support elements, for example on the base of the bridge structure, can be omitted. Preferably in the installed state, i.e. In the unloaded state of the expansion profile, a distance is formed between each end edge of the holding plate and the corresponding edge profile facing it, which is at least the size of the entire deformation path for which the expansion profile is designed. In this way, the expansion profile can be supported from below over a relatively wide area, and at the same time sufficient space is available for the lateral deformation paths of the expansion profile that occur.

Eine andere sehr vorteilhafte Weiterbildung des erfindungsgemäßen Fahrbahnüberganges besteht darin, daß zwei seitliche Halteplatten vorgesehen sind, deren jede an einem vom entsprechenden Unterbau auf der einen Fahrbahnfugenseite in Richtung auf den anderen Unterbau (d.h. den Unterbau auf der gegenüberliegenden Fahrbahnfugenseite) vorspringenden Stützelement lösbar befestigt ist. Bei dieser Ausgestaltung werden nicht mehr das Abdeckblech, sondern nunmehr spezielle am Unterbau beidseits der Fahrbahnfuge angebrachte Stützelemente eingesetzt, wobei sich dennoch insgesamt eine einfach aufgebaute und leicht und problemfrei montierbare Gesamtanordnung ergibt. Vorzugsweise liegt dabei zwischen den einander zugewandten Endkanten der beiden Halteplatten im Einbauzustand (d.h. im unbelasteten Zustand des Dehnprofiles) ein Abstand vor, der mindestens dem 1,5-fachen Verformungsweg, für den das Dehnprofil insgesamt ausgelegt ist, entspricht. Wenn bei einem solchen Fahrbahnübergang jedes Randprofil im Querschnitt einen an den Seitenrändern des Dehnprofiles über dessen Höhe anliegenden Seitensteg sowie eine von der Oberseite den entsprechenden Randbereich des Dehnprofiles überdeckende Randleiste aufweist, besteht eine weitere, besonders vorzugsweise Ausgestaltung der Erfindung darin, daß hierbei das Abdeckblech beidseits des Fugenrandes auf dem Randleisten der Randprofile aufliegt und die beiden Stützelemente bis zur unteren, dem Dehnprofil zugekehrten Endkante des Seitensteges des jeweiligen Randprofiles vorspringen. Hierbei werden also die Randleisten unterhalb der starren Randprofile so weit an die von den beiden Randprofilen auf der Fahrbahnunterseite gebildete Aufnahmeöffnung für das Dehnprofil herangeführt, daß gerade diese Aufnahmeöffnung noch zum Ein- und Ausbau des Dehnprofiles freilbleibt, ansonsten aber die Stützelemente sich bis zu den entsprechenden Öffnungskanten auf der Unterseite der Randleisten erstrecken. Dadurch kann zusätzlich auch noch eine gute Abstützung der Randleisten ebenfalls durch die Stützelemente erzielt werden. Dabei wird, erneut vorzugweise, jede Halteplatte im Bereich des Seitensteges des entsprechenden Randprofiles mit dem Stützelement verschraubt.Another very advantageous development of the carriageway transition according to the invention is that two lateral holding plates are provided, each of which is releasably attached to a supporting element projecting from the corresponding substructure on one side of the carriageway joint towards the other substructure (i.e. the substructure on the opposite side of the carriageway joint). In this embodiment, the cover plate is no longer used, but now special support elements attached to the substructure on both sides of the road joint are used, which nevertheless results in an overall arrangement which is simple in construction and can be assembled easily and without problems. There is preferably a distance between the mutually facing end edges of the two holding plates in the installed state (i.e. in the unloaded state of the expansion profile) which corresponds to at least 1.5 times the deformation path for which the overall expansion profile is designed. If, in the case of such a roadway transition, each edge profile has a cross-section lying on the side edges of the expansion profile above its height and an edge strip covering the corresponding edge region of the expansion profile from the top, there is a further, particularly preferred embodiment of the invention that the cover plate on both sides of the joint edge rests on the edge strips of the edge profiles and the two support elements project to the lower end edge of the side bar of the respective edge profile facing the expansion profile. Here, the edge strips below the rigid edge profiles are brought so far to the opening for the expansion profile formed by the two edge profiles on the underside of the roadway that this opening in particular remains free for the installation and removal of the expansion profile, but otherwise the supporting elements are as far as the corresponding ones Extend opening edges on the underside of the edge strips. As a result, good support of the edge strips can also be achieved by the support elements. Again, preferably, each holding plate is screwed to the support element in the area of the side web of the corresponding edge profile.

Eine weitere bevorzugte Ausgestaltung des erfindungsgemäßen Fahrbahnüberganges kann auch dadurch erreicht werden, daß die Randprofile und die Stützelemente selbst nicht als getrennte Bauteile ausgebildet sind, sondern daß vielmehr die Randprofile als Teil der Stützelemente selbst vorgesehen werden, d.h. mit diesen in einem gemeinsamen Bauteil integriert sind.Another preferred embodiment of the roadway crossing according to the invention can also can be achieved in that the edge profiles and the support elements themselves are not designed as separate components, but rather that the edge profiles are provided as part of the support elements themselves, ie are integrated with them in a common component.

Bei einem erfindungsgemäßen Fahrbahnübergang kann für den bereits erwähnten Fall, daß nämlich zwei seitliche Halteplatten vorgesehen und jede derselben an einem eigenen seitlichen Stützelement lösbar befestigt ist, die Festlegung bzw. Befestigung des Abdeckbleches auf der Oberseite des Dehnprofiles bevorzugt dadurch erfolgen, daß unten an dem Profil längs dessen Mittelbereiches sich durch den Spalt zwischen den einander zugewandten Endkanten der beiden Halteplatten hindurch erstreckende, im Abstand voneinander angeordnete Distanzstücke befestigt sind, an deren Ende eine oder mehrere, sich über die Länge der Fuge erstreckende, beidseits des Spaltes über die Enden der Halteplatten überstehende Gegendruckplatte(n) angeordnet ist/sind, deren seitliche Endbereiche gegen die Unterseite der Halteplatten relativ zu diesen verschieblich anliegen und die durch die Distanzstücke und das Dehnprofil hindurch mit dem Abdeckblech verschraubt ist bzw. sind. Hierdurch läßt sich eine wirksame Halterung des Abdeckbleches auf der Oberseite des Dehnprofiles erreichen, gleichzeitig ist aber weiterhin ein leichter und unproblematischer Ausbau des Dehnprofiles nach unten hin möglich. Bevorzugt sind hierbei die gegen die Unterseite der Halteplatte anliegenden Enbereiche der Gegendruckplatte(n) mit einem reibmindernden Belag, vorzugsweise einem Belag aus einem Polyimid oder aus Polytetrafluorethylen, versehen.In the case of a roadway crossing according to the invention, in the case already mentioned, namely that two lateral holding plates are provided and each of them is detachably attached to its own lateral supporting element, the fixing or attachment of the cover plate on the top of the expansion profile is preferably effected by the fact that at the bottom of the profile along its central region, spaced apart spacers are attached through the gap between the mutually facing end edges of the two holding plates, at the end of which one or more, extending over the length of the joint, projecting beyond the ends of the holding plates on both sides of the gap Counter-pressure plate (s) is / are arranged, the lateral end regions of which are displaceable relative to the underside of the holding plates and which are screwed to the cover plate through the spacers and the expansion profile. In this way, an effective mounting of the cover plate on the top of the expansion profile can be achieved, but at the same time a simple and unproblematic removal of the expansion profile downwards is still possible. The end regions of the counterpressure plate (s) which bear against the underside of the holding plate are preferably provided with a friction-reducing coating, preferably a coating made of a polyimide or polytetrafluoroethylene.

Die Befestigung der Distanzstücke unten am Dehnprofil erfolgt bevorzugt dadurch, daß die Distanzstücke dor anvulkanisiert sind.The spacers are preferably attached to the bottom of the expansion profile in that the spacers are vulcanized thereon.

Vorzugsweise überdeckt die Gegendruckplatte im Einbauzustand jede seitliche Halteplatte mindestens um den vollen Verformungsweg des Dehnprofiles, wodurch sichergestellt ist, daß auch beim Auftreten größter Verformungen immer noch eine ausreichende seitliche Überdeckung und damit die gewünschte beidseitige Abstützung der Gegendruckplatte an beiden seitlichen Halteplatten vorliegt.In the installed state, the counterpressure plate preferably covers each side holding plate by at least the full deformation path of the expansion profile, which ensures that even when the largest deformations occur there is still sufficient lateral coverage and thus the desired bilateral support of the counterpressure plate on both side holding plates.

Bei dem erfindungsgemäßen Fahrbahnübergang ist es ganz besonders von Vorteil, wenn auf der Abdeckplatte quer zur Fugenlängsachse angeordnete Verstärkungsrippen angebracht sind, wobei ganz besonders vorteilhafterweise an allen Einschraubstellen von Befestigungsschrauben für die Gegendruckplatte(n) und/oder die Halteplatte(n) solche Verstärkungsrippen angeordnet werden. Durch diese Verstärkungen des Abdeckbleches lassen sich dabei nicht nur vergrößerte Einschraubwege für Halteschrauben erzielen, sondern die Verstärkungsrippen sind insbesondere beim Ausbau des Dehnprofiles von großem Wert, weil sie eine bessere Aufnahme der Belastung des Abdeckbleches durch den Schotter und die Verkehrslasten ermöglichen. Solche Verstärkungsrippen werden dabei vorzugsweise durch Schweißen auf dem Abdeckblech befestigt.In the carriageway transition according to the invention, it is particularly advantageous if reinforcing ribs arranged transversely to the longitudinal axis of the joint are arranged on the cover plate, such reinforcing ribs being arranged particularly advantageously at all screwing-in points of fastening screws for the counter-pressure plate (s) and / or the holding plate (s) . Through these reinforcements of the cover plate, not only can increased screw-in paths for retaining screws be achieved, but the reinforcement ribs are of great value, in particular when expanding the expansion profile, because they enable the load on the cover plate to be better absorbed by the ballast and the traffic loads. Such reinforcing ribs are preferably attached to the cover plate by welding.

Eine weitere, ganz besonders vorteilhafte Ausgestaltung der Erfindung besteht auch darin, daß jede Halteplatte über die Länge der Fuge hinweg aus mehreren, nebeneinander angeordneten einzelnen Plattenabschnitten (Plattensektionen) besteht, die unabhängig voneinander an den betreffenden Stützelementen lösbar befestigt sind. Hierdurch läßt sich eine bessere Handhabung der Gegendruckplatten durch deren Aufteilung in handliche Sektionslängen erreichen.Another, very particularly advantageous embodiment of the invention also consists in the fact that each holding plate over the length of the joint consists of a plurality of individual plate sections (plate sections) arranged next to one another, which are independently detachably attached to the relevant support elements. This allows better handling of the counter-pressure plates by dividing them into handy section lengths.

Die Erfindung wird nachfolgend anhand der Zeichnung im Prinzip beispielshalber noch näher erläutert. Es zeigen:

  • Fig. 1 eine prinzipielle Schnittdarstellung durch eine erfindungsgemäße Ubergangskonstruktion;
  • Fig. 2 eine Schnittdarstellung durch eine andere Ausführungsform einer erfindungsgemäßen Übergangskonstruktion;
  • Fig. 3 eine perspektivische Prinzip-Teilschnittdarstellung eines erfindungsgemäßen Fahrbahnüberganges entsprechend Fig. 1 im eingebauten Zustand, sowie
  • Fig. 4 eine perspektivische Prinzip-Teilschnittdarstellung eines weiteren Ausführungsbeispiels eines erfindungsgemäßen Fahrbahnüberganges im eingebauten Zustand.
The invention is explained in more detail below in principle by way of example with reference to the drawing. Show it:
  • Figure 1 is a basic sectional view through a transition construction according to the invention.
  • Figure 2 is a sectional view through another embodiment of a transition structure according to the invention.
  • Fig. 3 is a perspective schematic partial sectional view of a road transition according to the invention corresponding to FIG. 1 in the installed state, and
  • Fig. 4 is a perspective schematic partial sectional view of a further embodiment of a roadway crossing according to the invention in the installed state.

In Fig. 1 ist eine prinzipielle Schnittdarstellung einer Fugen-Übergangskonstruktion (ohne Schotterauflage und Gleise) für eine Eisenbahnbrücke gezeigt, mit der eine Fahrbahnfuge F überbrückt wird.In Fig. 1 a basic sectional view of a joint transition construction (without ballast and tracks) for a railway bridge is shown, with which a carriageway joint F is bridged.

Zu beiden Seiten der Fahrbahnfuge F ist die Brücke oben jeweils mit einer Schicht aus Brückenschutzbeton 1 a bzw. 1 b versehen, die sich über eine Brückenisolierung 13 jeweils auf einem Unterbau 21 a bzw. 21 b abstüzt.On both sides of the carriageway joint F, the bridge is provided at the top with a layer of bridge protection concrete 1 a and 1 b, respectively, which is supported by a bridge insulation 13 on a substructure 21 a and 21 b, respectively.

Die Übergangskonstruktion weist dabei ein aus einem geeigneten elastischen Werkstoff, vorzugsweise einem elastomeren Werkstoff, gefertigtes Block-Dehnprofil 2 auf, das seitlich von starren leistenförmigen Randprofilen 3 bzw. 4 formschlüssig eingeklammert bzw. gehaltert ist, wobei diese Randprofile 3 und 4 gleichzeitig außen auch als Anlagefläche und Abstüzung für die anliegenden Brückenschutzbeton-Schichten 1a und 1b dienen. In den Randprofilen 3 und 4 sind ferner seitlich formschlüssig ( in der z.B. in Fig. 1 gezeigten Weise, auf die ausdrücklich verwiesen ist) Dichtungsbänder 5 eingelassen, die über eine Dichtungs-Zwischenschicht 26 mit der Brückenisolierung 13 auf der jeweiligen Seite in Verbindung stehen und für eine entsprechende seitliche Abdichtung der Fuge nach unten hin Sorge tragen.The transition construction has a block expansion profile 2 made of a suitable elastic material, preferably an elastomeric material, which is positively clamped or held laterally by rigid strip-shaped edge profiles 3 or 4, these edge profiles 3 and 4 simultaneously being on the outside as well Contact surface and support for the adjacent bridge protection concrete layers 1a and 1b serve. In the edge profiles 3 and 4 are also laterally form-fitting (in the example shown in Fig. 1, to which express reference is made) sealing tapes 5, which are connected to the bridge insulation 13 on the respective side via a sealing intermediate layer 26 and ensure that there is a corresponding lateral seal at the bottom.

Das elastische Dehnprofil 2 weist einen Querschnitt derart auf, daß es auf seiner Oberseite eine im wesentlichen durchgehende, aus einer Vielzahl nebeneinanderliegender Längsstreifen gebildete Oberfläche aufweist, die in gleicher Höhe wie die Oberfläche der seitlichen Randprofile 3 und 4 liegt.The elastic expansion profile 2 has a cross section such that it has a substantially continuous surface formed from a plurality of adjacent longitudinal strips on its upper side, which is at the same height as the surface of the side edge profiles 3 and 4.

Wie aus Fig. 1 gut erkennbar ist, sind im Inneren des Dehnprofiles 2 eine Vielzahl von zueinander versetzt angeordneten, sich in Längsrichtung des Profiles erstreckende Profilaussparungen 27 vorgesehen, die in geeigneter Weise angeordnet das gewünschte Dehnverhalten des Dehnprofiles 2 ergeben.As can be clearly seen from FIG. 1, a large number of staggered profile recesses 27 are provided in the interior of the expansion profile 2 and extend in the longitudinal direction of the profile result in the desired expansion behavior of the expansion profile 2.

Die beiden starren seitlichen Randprofile 3 und 4 weisen, in Querschnitt gesehen, einen an den Seitenrändem des Dehnprofiles 2 über dessen Höhe anliegenden Seitensteg 3a bzw. 4a auf, der an seinem oberen Ende mit einer rechtwinkelig in Richtung auf das Dehnprofil 2 vorspringenden Randleiste 3b bzw. 4b versehen ist, and deren freiem Ende eine sich in Richtung nach unten auswölbende Verdickung ausgebildet ist. Der solchermaßen ausgeformte Seitensteg 3b, 4b der starren Randprofile 3, 4 überdeckt damit in einem gewissen Randbereich von oben her das Dehnprofil 2, wie dies in Fig. 1 gezeigt ist, wobei auf die zeichnerische Darstellung dort insoweit ausdrücklich verwiesen wird.The two rigid lateral edge profiles 3 and 4 have, seen in cross section, a side web 3a or 4a which lies against the side edges of the expansion profile 2 above its height and which at its upper end projects with an edge strip 3b or 3b projecting at right angles in the direction of the expansion profile 2 4b is provided, at the free end of which a bulge which bulges downward is formed. The side web 3b, 4b formed in this way of the rigid edge profiles 3, 4 thus covers the expansion profile 2 in a certain edge area from above, as shown in FIG. 1, reference being expressly made to the drawing there.

Auf der in einer Ebene liegenden Oberseite der aus Dehnprofil 2 und anschließenden seitlichen starren Randprofilen 3 und 4 gebildeten Anordnung ist ein das Ganze nach oben hin abschließendes Abdeckblech 14 angebracht, das nicht nur den oben vom Dehnprofil 2 ausgefüllten Raum überdeckt, sondern seitlich sich noch auf die Oberfläche der dort vorhandenen Randprofile 3 bzw. 4 hinauz erstreckt und sich auf diesen oben abstützt. Wie den Fig. 3 und 4 entnommen werden kann, sind in dem Abdeckblech 14 in Abständen zueinander längliche schlitzförmige Queröffnungen 16 angebracht, die rechtwinkelig zur Längsachse des Abdeckbleches 14 ausgerichtet sind. Das solchermaßen geschlitzte Abdeckblech 14 überbrückt die gesamte Dehnfugenkonstruktion und stützt dabei den Schotter nach unten hin ab, insbesondere wenn zum Zwecke der Montage oder Demontage des Dehnprofiles 2 dieses aus seiner seitlichen Einklammerung durch die starren Randprofile 3 und 4 aus- oder eingebaut werden soll.On the top of the arrangement of extension profile 2 and subsequent rigid side edge profiles 3 and 4 lying in one plane there is a cover plate 14 which closes the top and which not only covers the space filled in above by expansion profile 2, but also laterally the surface of the edge profiles 3 or 4 present there extends out and is supported on the top thereof. As can be seen from FIGS. 3 and 4, elongated slot-shaped transverse openings 16 are arranged in the cover plate 14 at intervals, which are aligned at right angles to the longitudinal axis of the cover plate 14. The cover plate 14, which is slotted in this way, bridges the entire expansion joint construction and supports the ballast downwards, in particular if, for the purpose of assembling or disassembling the expansion profile 2, this is to be removed or installed from its lateral brackets by the rigid edge profiles 3 and 4.

Die Öffnungen 16 im Abdeckblech haben die Aufgabe, für den Schotterabrieb, der unter die Abdeckbleche gespült wird (was in der Praxis nicht verhinderbar ist), freien Austritt zu schaffen. Gleichzeitig wird aber auch noch verhindert, daß der Schotterabrieb sich unter dem Abdeckblech aufbauen und verkrusten könnte.The openings 16 in the cover plate have the task of creating free exit for the ballast abrasion that is washed under the cover plates (which cannot be prevented in practice). At the same time, however, it is also prevented that the ballast abrasion could build up and crust under the cover plate.

Auf der Oberfläche des Abdeckbleches 14 sind weiterhin, ebenfalls in bestimmten Abständen voneinander, Versteifungsrippen 15 zwischen den länglichen Öffnungen 16 angebracht und zwar an den Stellen, an denen von unten her Einschraubungen in das Blech vorgenommen werden, auf die noch zurückzukommen sein wird. Auch diese Versteifungsrippen 15 sind senkrecht zur Längsachse des Abdeckbleches 14 ausgerichtet.On the surface of the cover plate 14 are also, at certain intervals from each other, stiffening ribs 15 between the elongated openings 16 at the locations where screwings are made from below into the plate, to which we will have to come back. These stiffening ribs 15 are also aligned perpendicular to the longitudinal axis of the cover plate 14.

Unterhalb der Brückenisolierung finden sich die Unterbauten für die Übergangskonstruktion, die zu beiden Seiten der Fahrbahnfuge F oben direkt im Bereich des Endes der Brückenschutzbeton-Schichten 1 a, 1 b vorgesehen sind. Diese Unterbauten, die in Fig. 1 allgemein mit 21 a und 21 b bezeichnet sind, weisen dabei Verankerungen 22 auf, an denen entsprechende Stützelemente 7 für die Übergangskonstruktion angeschweißt sind. Diese Stützelemente 7 springen bei der in Fig. 1 gezeigten Anordnung direkt unterhalb der Brückenisolierung 13 bis zu der jeweils unteren, dem Dehnprofil 2 zugekehrten Endkante 20 des jeweiligen Seitensteges 3a bzw. 4a der Randprofile 3 bzw. 4 vor. Hierdurch wird eine Abstützung der Übergangskonstruktion im gesamten Randbereich erzielt, wobei diese Vorsprünge der Stützelemente 7 gleichzeitig auch noch die seitlichen starren Randprofile 3, 4 über deren voller Unterfläche abdecken. Gleichzeitig ist dabei jedoch auch gewährleistet, daß die Öffnung in den Raum zwischen den beiden Randprofilen 3 und 4, der vom Dehnprofil 2 ausgefüllt wird, auch auf der Unterseite nicht durch die Vorsprünge der Stützelemente 7 behindert oder eingeengt wird. Vielmehr liegen die Endkanten dieser Vorsprünge so, daß sie nicht in die Einschieböffnung, die unten zwischen den beiden Randprofilen 3 und 4 zum Einbauen des Dehnprofiles 2 gebildet wird, hineinragen, so daß das Aus- bzw. Einbauen eines neuen oder anderen Dehnprofiles 2 von der Unterseite her erfolgen kann, ohne daß dabei das Abdeckblech 14 oder gar der auf diesem aufliegende Schotter entfernt werden müßten.Below the bridge insulation are the substructures for the transition structure, which are provided on both sides of the carriageway joint F above directly in the area of the end of the bridge protection concrete layers 1 a, 1 b. These substructures, which are generally designated by 21 a and 21 b in FIG. 1, have anchors 22 to which corresponding support elements 7 for the transition construction are welded. In the arrangement shown in FIG. 1, these support elements 7 protrude directly below the bridge insulation 13 up to the respectively lower end edge 20 of the respective side web 3a or 4a of the edge profiles 3 or 4 facing the expansion profile 2. As a result, the transition structure is supported in the entire edge area, these projections of the support elements 7 also simultaneously covering the lateral rigid edge profiles 3, 4 over their full lower surface. At the same time, however, it is also ensured that the opening in the space between the two edge profiles 3 and 4, which is filled by the expansion profile 2, is not obstructed or narrowed on the underside by the projections of the support elements 7. Rather, the end edges of these projections are such that they do not protrude into the insertion opening, which is formed below between the two edge profiles 3 and 4 for installing the expansion profile 2, so that the removal or installation of a new or different expansion profile 2 from the Underside can be done without the cover plate 14 or even the ballast resting on it having to be removed.

Während die genannten Vorsprünge der Stützelemente 7 die starren Randprofile 3 und 4 von deren Unterseite her abstützen, dienen sie gleichzeitig auch als Befestigungselemente für zwei seitlich unterhalb des Dehnprofiles 2 angebrachte Halteplatten 6a und 6b, die mittels Schrauben 8 lösbar von unten her an den Stützelementen 7 befestigt sind. Diese beiden Halteplatten 6a und 6b sind so ausgebildet, daß sie die untere Fläche des Dehnprofiles 2 von den beiden Seiten her bis in einen mittleren Bereich hin abstützen. Dabei wird gleichzeitig das Dehnprofil 2 zwischen der jeweiligen Halteplatte 6a bzw. 6b einerseits und den oben nach innen hin vorspringenden Randleisten 3b bzw. 4b der Randprofile 3 bzw. 4 andererseits beim Anschrauben der Halteplatten 6a, 6b verspannt, so daß insgesamt eine feste Halterung des Dehnprofiles 2 innerhalb der Gesamtkonstruktion erreicht ist.While the above-mentioned projections of the support elements 7 support the rigid edge profiles 3 and 4 from their underside, they also serve as fastening elements for two holding plates 6a and 6b attached laterally below the expansion profile 2, which can be detached from the support elements 7 from below by means of screws 8 are attached. These two holding plates 6a and 6b are designed such that they support the lower surface of the expansion profile 2 from the two sides up to a central region. At the same time, the expansion profile 2 is clamped between the respective holding plate 6a or 6b on the one hand and the edge strips 3b or 4b of the edge profiles 3 and 4 projecting inwards at the top when the holding plates 6a, 6b are screwed on, so that overall a firm mounting of the Expansion profile 2 is reached within the overall construction.

Die einander zugewandten Endkanten 19a, 19b der Halteplatten 6a, 6b bilden zwischen sich einen freien Spalt a, über den das Dehnprofil 2 von den Halteplatten nicht von unten her abgestüzt ist. Durch diesen Spalt a ragen in Längsrichtung des Dehnprofiles 2 in Abstand zueinander jeweils längs der Mittellinie angeordnete, am Dehnprofil 2 unten anvulkanisierte Distanzstücke 9, die sich senkrecht über die gesamte Höhe des Spaltes a erstrecken und an deren Unterseite eine beidseits überstehende Gegendruckplatte 10 angeordnet ist, die mit ihren beiden seitlichen Endbereichen von unten her die seitlichen Halteplatten 6a und 6b übergreift, wie dies in den Fig. 1 bis 3 gezeigt ist. Dabei liegen die beiden Enden der Gegendruckplatte 10 jeweils von unten her an den entsprechenden Unterseiten der seitlichen Halteplatten 6a und 6b relativ zu diesen verschieblich an, wobei für die bei Verformungsbewegungen des Dehnprofiles 2 dort auftretenden Relativbewegungen in diesen Endbereichen der Gegendruckplatte 10 reibmindernde Beläge 12 (etwa aus PTFE) vorgesehen sind. Die Gegendruckplatte 10 ist ihrerseits über Schrauben 11, die durch die Distanzstücke 9 sowie das Dehnprofil 2 hindurch verlaufen, oben am Abdeckblech 14 befestigt. Dabei ist die Lage der Distanzstücke 9 bzw. der Schrauben 11 so gewählt, daß auf der Oberseite des Abdeckbleches 4 an jeder Einschraubstelle eine Versteifungsrippe 15 entsprechend vorliegt, so daß für das einschraubseitige Ende der Schrauben 11 infolge der Versteifungsrippen 15 eine ausreichend große Einschraublänge am Abdeckblech 14 gegeben ist.The mutually facing end edges 19a, 19b of the holding plates 6a, 6b form between them a free gap a, via which the expansion profile 2 is not supported by the holding plates from below. Through this gap a protrude in the longitudinal direction of the expansion profile 2 spaced from each other along the center line, vulcanized on the expansion profile 2 below spacers 9, which extend perpendicularly over the entire height of the gap a and on the underside of which a pressure plate 10 projecting on both sides is arranged, which overlaps the side holding plates 6a and 6b with their two lateral end regions from below, as is shown in FIGS. 1 to 3. The two ends of the counter-pressure plate 10 each lie from below on the corresponding undersides of the side holding plates 6a and 6b so as to be displaceable relative to the latter, the friction-reducing linings 12 (approximately made of PTFE) are provided. The counter-pressure plate 10 is in turn fastened to the cover plate 14 by means of screws 11, which run through the spacers 9 and the expansion profile 2. The position of the spacers is 9 or the screws 11 chosen so that on the top of the cover plate 4 there is a stiffening rib 15 at each screw-in point, so that the screw-in end of the screws 11 has a sufficiently large screw-in length on the cover plate 14 as a result of the stiffening ribs 15.

Die horizontal bewegliche Gegendruckplatte 10, die durch das Dehnprofil 2 mit dem geschlitzten Abdeckblech 14 und den Verstärkungen 15 verschraubt ist, verhindert dabei, daß sich das Abdeckblech 14 von der Oberfläche der Dehnfugenkonstruktion (die gebildet wird durch die Oberfläche der seitlichen Randprofile 3, 4 und die Oberfläche des Dehnprofiles 2) abheben könnte. Zum Erleichtern der Handhabung wird dabei die Gegendruckplatte 10 nicht als eine einzelne, sich über die gesamte Länge der Fahrbahnfuge erstreckende Einzelplatte ausgeführt, sondern ist in eine Mehrzahl von Einzelplatten aufgeteilt, die in handlichen Sektionslängen vorliegen und entsprechend vereinfacht eingebaut werden können. Diese Einzelplatten werden nebeneinander angeordnet und bilden in ihrer Gesamtheit dann die sich über die gesamte Länge der Fahrbahnfuge erstreckende Gegendruckplatte 10, wobei die Einzelplatten jeweils unabhängig voneinander durch eigene Schrauben 11 mit dem Abdeckblech 14 verschraubt sind.The horizontally movable counter-pressure plate 10, which is screwed through the expansion profile 2 with the slotted cover plate 14 and the reinforcements 15, prevents the cover plate 14 from the surface of the expansion joint construction (which is formed by the surface of the side edge profiles 3, 4 and could lift off the surface of the expansion profile 2). To facilitate handling, the counter-pressure plate 10 is not designed as a single single plate extending over the entire length of the road joint, but is divided into a plurality of individual plates which are available in handy section lengths and can be installed in a correspondingly simplified manner. These individual plates are arranged side by side and in their entirety then form the counter-pressure plate 10 which extends over the entire length of the road joint, the individual plates being screwed to the cover plate 14 independently of one another by their own screws 11.

Wie die Figuren zeigen, sind alle Elemente der gesamten Anordnung, soweit sie für einen Aus- bzw. Einbau des Dehnprofiles 2 von der Unterseite her wichtig sind, völlig frei von der Unterseite der Fuge her zugänglich. Diese ermöglicht es, den Aus- bzw. Einbau des Dehnprofiles 2 in rascher und unkomplizierter Weise vorzunehmen:

  • Zunächst werden bei der in Fig. 1 gezeigten Anordnung die Befestigungsschrauben 11 für die Gegendruckplatte(n) 10 gelöst und anschließend die Gegendruckplatte(n) 10 abgenommen. Hiernach werden durch Lösen der seitlichen Befestigungsschrauben 8 die seitlichen Halteplatten 6a und 6b nach unten ausgebaut. Dabei können, ebenso wie bei der Gegendruckplatte 10, die seitlichen Halteplatten 6a und 6b sowohl in Längsrichtung der Fuge durchgehend, als auch in nebeneinanderliegenden Einzelabschnitten angeordnet ausgebildet sein. Sind die seitlichen Halteplatten 6a und 6b ausgebaut, dann ist das Dehnprofil 2 von der Unterseite her frei zugänglich und kann in geeigneter Weise nach unten entfernt werden. Das gesamte Gewicht des Schotters und der Gleise von oben her wird durch das Abdeckblech 14, das durch die Versteifungsrippen 15 verstärkt ist, vollständig aufgenommen. Sodann kann ein neues Dehnprofil 2 von unten her wieder in den Raum zwischen den seitlichen starren Randprofilen 3, 4 eingeschoben und anschließend durch Befestigen der seitlichen Halteplatten 6a und 6b sowie der mittleren Gegendruckplatte 10 die gesamte Anordnung wieder in den betriebsfertigen Endzustand gebracht werden.
As the figures show, all elements of the entire arrangement, insofar as they are important for removing or installing the expansion profile 2 from the underside, are completely freely accessible from the underside of the joint. This enables the expansion or installation of the expansion profile 2 to be carried out in a quick and uncomplicated manner:
  • In the arrangement shown in FIG. 1, the fastening screws 11 for the counterpressure plate (s) 10 are first loosened and then the counterpressure plate (s) 10 are removed. Thereafter, the side holding plates 6a and 6b are removed downwards by loosening the side fastening screws 8. As with the counterpressure plate 10, the lateral holding plates 6a and 6b can be designed to be continuous in the longitudinal direction of the joint as well as arranged in adjacent individual sections. If the side holding plates 6a and 6b are removed, then the expansion profile 2 is freely accessible from the underside and can be removed in a suitable manner downwards. The entire weight of the ballast and the tracks from above is completely absorbed by the cover plate 14, which is reinforced by the stiffening ribs 15. Then a new expansion profile 2 can be inserted from below again into the space between the lateral rigid edge profiles 3, 4 and then the entire arrangement can be brought back into the ready-to-use final state by attaching the lateral holding plates 6a and 6b and the central counter-pressure plate 10.

Eine etwas andere Art für die Ausführung eines solchen Fahrbahnüberganges ist in Fig. 2 gezeigt: im Grundaufbau entspricht die dort gezeigte Ausführungsform im wesentlichen aber der aus Fig. 1:

  • Bei der hier gezeigten Ausführungsform einer Übergangskonstruktion sind jedoch, anders als bei Rg. 1, die seitlichen Randprofile zusammen mit den Vorsprüngen der Stützelemente 7 einstückig ausgebildet, d.h. sie bilden mit diesen eine integrierte Baueinheit. Diese Baueinheit ist allerdings ihrerseits im Bereich der Unterbauten an einer dort getrennt vorgesehenen Metall-Randkonstruktion 28 mit Schrauben 29 befestigt.
A somewhat different way of carrying out such a roadway transition is shown in FIG. 2: in the basic structure, the embodiment shown there essentially corresponds to that from FIG. 1:
  • In the embodiment of a transition construction shown here, however, unlike in FIG. 1, the lateral edge profiles are formed in one piece together with the projections of the support elements 7, ie they form an integrated structural unit with these. However, this unit is in turn fastened in the area of the substructures to a metal edge construction 28 provided separately there with screws 29.

Die Fig. 3 und 4 zeigen nun prinzipielle perspektivische Schnittdarstellungen, die diese Fahrbahn- übergänge für Eisenbahnbrücken im eingebauten Zustand darstellen. Dabei sind in den Fig. 3 und 4, ebenso wie bereits in den Fig. 1 und 2, gleiche Elemente weiterhin mit gleichen Bezugszeichen versehen.3 and 4 now show basic perspective sectional representations, which represent these carriageway transitions for railway bridges in the installed state. 3 and 4, just like in FIGS. 1 and 2, the same elements continue to be provided with the same reference numerals.

Die Darstellung nach Fig. 3 gibt (wenn auch in etwas vereinfachter Weise) eine solche perspektivische Schnittdarstellung des eingebauten Zustands eines Fahrbahnüberganges wieder, wie er in Fig. 1 bereits gezeigt wurde, während Fig. 4 eine andere Ausführungsform illustriert.The representation according to FIG. 3 shows (albeit in a somewhat simplified manner) such a perspective sectional illustration of the installed state of a roadway crossing, as was already shown in FIG. 1, while FIG. 4 illustrates another embodiment.

Die Darstellungen nach den Fig. 3 und 4 lassen in anschaulicher Weise erkennen, wie ein solcher Fahrbahnübergang bei einer Eisenbahnbrücke über eine Fahrbahnfuge F der Weite S und unter einer Schotteraufschüttung 23, auf der die die Schienen 25 tragenden Gleisschwellen 24 vorliegen, angeordnet ist. Dabei ist bei den Darstellungen der Fig. 3 und 4 die Schotteraufschüttung 23 nur im hinteren Teil der Zeichnung dargestellt, während im vorderen Zeichnungsteil sowohl die Schotteraufschüttung wie auch die Gleiskonstruktion zur Freilegung und perspektivischen Illustration des Fahrbahnüberganges weggelassen sind.The illustrations according to FIGS. 3 and 4 clearly show how such a carriageway crossing is arranged at a railway bridge over a carriageway joint F of width S and under a ballast fill 23 on which the rail sleepers 24 carrying the rails 25 are arranged. 3 and 4, the ballast fill 23 is only shown in the rear part of the drawing, while in the front part of the drawing both the ballast fill and the track construction for exposing and perspective illustration of the carriageway transition are omitted.

Die Fig. 3 und 4 zeigen dabei die sich in Fugenlängsrichtung erstreckende Fahrbahnübergangskonstruktion mit dem Dehnprofil 2 und den seitlichen Randprofilen 3, 4, wobei auf der Oberseite des Abdeckbleches 14 jeweils nur eine Versteifungsrippe 15 (mit angedeuteter Gewindelage zum Einschrauben einer Befestigungsschraube für die Halteplatte 6 bzw. die Gegendruckplatte 10) gezeigt ist. Bei der in Fig. 4 gezeigten Anordnung sind die starren seitlichen Randprofile 3 und 4 in einer anderen Art und Weise ausgebildet wie bei den Darstellungen der Fig. 1 bis 3: bei Fig. 4 werden seitliche starre Randprofile 3, 4 eingesetzt, die zwar wiederum einen senkrecht verlaufenden, sich auch über die ganze Höhe des Dehnprofiles 2 erstreckenden Seitensteg aufweisen, der jedoch diesmal nicht auf der Oberseite, sondern auf seiner Unterseite eine stützende Abwinkelung (und zwar diesmal in Richtung auf die Fugenaußenseite hin) aufweist. Diese Abwinkelung untergreift die nach dorthin vorspringenden Verlängerungen der Stützelemente 7 in einer ähnlichen Weise, wie dies bei der Darstellung in Fig. 3 insoweit für die Halteplatten 6a und 6b (vgl. auch Fig. 1) gilt. Während aber bei den Ausführungen der Fig. 1 bis 3 die seitlichen Halteplatten 6a und 6b jeweils von unten her das Dehnprofil 2 abstützen, ist bei der Ausführungsform nach Fig. 4 nur eine einzige Halteplatte 6 vorgesehen, die nämlich im mittleren Bereich des Dehnprofiles 2, sich in dessen Längsrichtung erstreckend, angeordnet ist. Diese Halteplatte 6 wird über in Fig. 4 nicht gezeigte Schrauben, die durch das Dehnprofil 2 hindurch verlaufen, an dem oben das Dehnprofil 2 vollständig überdeckenden Abdeckblech 14, das sich in seinen seitlichen Bereichen auch noch oben auf den Randprofilen 3 und 4 abstützt, befestigt. Hierbei ist für jede Befestigungsstelle eine Versteifungsrippe 15 vorgesehen, die sich, ebenso wie die schlitzförmigen Offnungen 16 im Abdeckblech 14 selbst, senkrecht zur Längs-Mittelachse des Abdeckbleches 14 erstreckt. Auf diese Art und Weise ist das Dehnprofil 2 zwischen dem Abdeckblech 14 und der Halteplatte 6 verspannt, was zur Folge hat, daß sich auch bei dieser Ausführungsform das Abdeckblech 14 nicht ungewollt relativ zum Dehnprofil 2 verschieben oder von diesem ablösen kann.3 and 4 show the carriageway transition construction extending in the longitudinal direction of the joint with the expansion profile 2 and the lateral edge profiles 3, 4, with only one stiffening rib 15 on the top of the cover plate 14 (with the thread position indicated for screwing in a fastening screw for the holding plate 6 or the pressure plate 10) is shown. In the arrangement shown in FIG. 4, the rigid lateral edge profiles 3 and 4 are designed in a different way than in the representations of FIGS. 1 to 3: in FIG. 4, lateral rigid edge profiles 3, 4 are used, which in turn are used have a vertically extending side web, which also extends over the entire height of the expansion profile 2, but this time, not on the upper side, but on its underside, it has a supporting angled portion (and this time in the direction of the joint outside). This angling engages under the protruding extensions of the support elements 7 in a similar manner, as is the case for the holding plates 6a and 6b in the illustration in FIG. 3 (cf. also FIG. 1). However, while in the embodiments of FIGS. 1 to 3 the lateral holding plates 6a and 6b each support the expansion profile 2 from below, in the embodiment according to FIG. 4 only a single holding plate 6 is provided, namely in the central region of the expansion profile 2, extending in its longitudinal direction is arranged. This holding plate 6 is via screw, not shown in Fig. 4 ben, which extend through the expansion profile 2, to the cover plate 14, which completely covers the expansion profile 2 and which is also supported in its lateral areas at the top on the edge profiles 3 and 4. Here, a stiffening rib 15 is provided for each fastening point, which, like the slot-shaped openings 16 in the cover plate 14 itself, extends perpendicular to the longitudinal central axis of the cover plate 14. In this way, the expansion profile 2 is clamped between the cover plate 14 and the holding plate 6, with the result that, in this embodiment, the cover plate 14 can not accidentally move relative to the expansion profile 2 or detach from it.

Die Seitenränder 18a und 18b der Halteplatte 6 befinden sich dabei (unterstellt man den Ruhezustand der Gesamtkonstruktion, d.h. den Zustand, bei dem kein Verformungsweg auftritt) in einem Abstand A jeweils zu den seitlichen Randleisten 3 bzw. 4, wobei dieser Abstand A in seiner Größe der Länge des gesamten Verformungsweges, für den das Dehnprofil 2 ausgelegt ist, entspricht. Dadurch wird sichergestellt, daß auch bei voller einseitiger Auslenkung des Dehnprofiles 2 ein Anlaufen der Halteplatte 6 seitlich gegen die Randprofile 3 oder 4 nicht eintreten kann und noch immer ein gewisser Restspalt verbleibt, der auch ein örtliches Ausbauchen des Dehnprofiles nach unten erlaubt.The side edges 18a and 18b of the holding plate 6 are located (assuming the idle state of the overall construction, ie the state in which no deformation path occurs) at a distance A from the lateral edge strips 3 and 4, respectively, this distance A being of a size corresponds to the length of the entire deformation path for which the expansion profile 2 is designed. This ensures that even with a full one-sided deflection of the expansion profile 2, the retaining plate 6 cannot come into contact laterally against the edge profiles 3 or 4 and that a certain residual gap still remains, which also allows the expansion profile to bulge downwards.

Soll das Dehnprofil bei der in Fig. 4 gezeigten Anordnung aus- und wieder eingebaut werden, ist es nur erforderlich, von unten her die Befestigungsschrauben für die Halteplatte 6 zu öffnen und anschließend die Halteplatte 6 (die über die Gesamtlänge des Fahrbahnüberganges einstückig oder in nebeneinanderliegenden getrennten Platten ausgeführt sein kann - vgl. auch die Ausführungen zu Fig. 1 -) zu entfernen. Hiernach kann problemfrei das Dehnprofil 2 nach unten ausgebaut bzw. ausgewechselt und das gewünschte andere Profil eingeschoben werden, wonach anschließend wiederum von unten her die Halteplatte 6 angelegt und über die Befestigungsschrauben wiederum mit dem Abdeckblech 14 verbunden wird.If the expansion profile is to be removed and reinstalled in the arrangement shown in FIG. 4, it is only necessary to open the fastening screws for the holding plate 6 from below and then the holding plate 6 (which is in one piece or in side by side over the entire length of the carriageway transition separate plates can be carried out - see also the explanations for Fig. 1 -). Thereafter, the expansion profile 2 can be removed or exchanged without problems and the desired other profile inserted, after which the holding plate 6 is then again placed from below and again connected to the cover plate 14 via the fastening screws.

Zur Darstellung nach Fig. 3 sei erwähnt, daß dort nur prinzipiell der Einbauzustand des in Fig. 1 gezeigten Fahrbahnüberganges gezeigt werden soll. Spezielle Einzelheiten, die in Fig. 1 noch angegeben sind, sind in Fig. 2 teilweise entfallen, soferne sie für die Deutlichkeit der prinzipiellen Einbaudarstellung entbehrlich erschienen. So sind insbesondere die Befestigungsschrauben sowohl für die Halteplatten 6a und 6b, wie auch für die Gegendruckplatte 10 nicht mehr eingezeichnet und das Befestigungsgewinde oben in der in der einzigen gezeigten Verstärkungsrippe 15 nur angedeutet. Gleiches gilt auch für die Darstellung nach Fig. 4.3 that the installation state of the roadway crossing shown in FIG. 1 is only to be shown in principle. Special details, which are still indicated in FIG. 1, are partially omitted in FIG. 2, provided that they appeared to be unnecessary for the clarity of the basic installation representation. In particular, the fastening screws for the holding plates 6a and 6b, as well as for the counter-pressure plate 10, are no longer shown, and the fastening thread in the reinforcing rib 15 shown in the only one is only indicated. The same applies to the representation according to FIG. 4.

Claims (17)

1. Track junction for expansion joints in railway bridges with an elastic expansion profile (2) which extends along a track joint (F) and is held on its edge region on both sides of the track joint by means of a rigid edge profile (3, 4) fixed on a base (21 a, 21 b), and with a support arrangement which supports the expansion profile from below, characterised in that during assembly the space between the two edge profiles (3, 4); the support arrangement is constructed in the form of at least one holding plate (6; 6a, 6b), at least one holding plate (6; 6a, 6b) being arranged so as to be fully accessible from below inside the gap (S) which is constructed between the bases on both sides of the track joint; at least one holding plate (6; 6a, 6b) is releasably mounted on a support element (7, 14); and the upper face of the expansion profile (2) is covered by a cover plate (14) which rests laterally on top of the edge profiles (3,4).
2. Track junction as claimed in claim 1, characterised in that the cover plate (14) is provided with slot- like openings (16).
3. Track junction as claimed in claims 1 or 2, characterised in that the cover plate (14) is constructed as a support element for the lower holding plate (6), the holding plate (6) being fixed on the cover plate (14) by means of screws which extend through the expansion profile (2).
4. Track junction as claimed in claim 3, characterised in that the distance (A) between each end edge (18a, 18b) of the holding plate (6) and the corresponding edge profile (3, 4) in the assembled state is at least of the magnitude of the total strain path for which the expansion profile (2) is designed.
5. Track junction as claimed in claims 1 or 2, characterised in that two lateral holding plates (6a, 6b) are provided, each of which is releasably fixed to a support element (7) which projects from the corresponding base (21 a, 21 b) towards the other base (21 b, 21 a).
6. Track junction as claimed in claim 5, characterised in that the distance (a) between the end edges (19a, 19b) which face one another of the holding plates (6a, 6b) in the assembled state is at least of the magnitude of 1.5 times the strain path for which the expansion profile (2) is designed.
7. Track junction as claimed in claims 5 or 6, in which each edge profile in cross-section has a side piece (3a, 4a) which butts against the side edges of the expansion profile over its height as well as an edge strip (3b, 4b) which covers the corresponding edge region of the expansion profile from the top, characterised in that on both sides of the edge of the joint the cover plate (14) rests on the edge strips (3b, 4b) of the edge profiles (3, 4) and the two support elements (7) project as far as the lower end edge (20) of the side piece (3a, 4a) of the respective edge profile (3, 4) facing the expansion profile (2).
8. Track junction as claimed in claim 7, characterised in that each holding plate (6a, 6b) is screwed to the support element (7) in the region of the side piece (3a, 4a) of the corresponding edge profile (3, 4).
9. Track junction as claimed in one of claims 5 to 8, characterised in that the edge profiles (3, 4) are constructed as a part of support elements.
10. Track junction as claimed in one of claims 5 to 9, characterised in that distance pieces (9) which are arranged spaced from one another are mounted at the bottom of the expansion profile (2) along the central region thereof and extend through the gap (a) between the end edges (19a, 19b) which face one another of the two holding plates (6a, 6b), one or more counter-pressure plate(s) (10) which extend over the length of the track joint and project on both sides of the gap (a) over the ends of the holding plates (6a, 6b) is/are arranged on the end of the said distance pieces, the lateral end regions of the said counter-pressure plate(s) but movably against the underside of the holding plates (6a, 6b) relative to the latter, and the said counter-pressure plate(s) is/are screwed to the cover plate (14) through the distance pieces (9) and the expansion profile (2).
11. Track junction as claimed in claim 10, characterised in that the end regions of the counter-pressure plates (10) which butt against the underside of the holding plates (6a, 6b) are provided with a coating to reduce friction.
12. Track junction as claimed in claims 10 or 11, characterised in that a coating of polyimide or polytetrafluoroethylene is provided as the friction-reducing coating.
13. Track junction as claimed in one of claims 10 to 12, characterised in that the distance pieces (9) are prevulcanised at the bottom of the expansion profile (2).
14. Track junction as claimed in one of claims 10 to 13, characterised in that in the assembled state the counter-pressure plate (10) covers each lateral holding plate (6a, 6b) by at least the full strain path of the expansion profile (2).
15. Track junction as claimed in one of claims 1 to 14, characterised in that reinforcing ribs are fixed on the cover plate (14) at right angles to the longitudinal axis of the joint.
16. Track junction as claimed in claim 15, characterised in that reinforcing ribs (15) are provided at all the screwing points for fixing screws for the counter-pressure plates (10) or the holding plate(s) (6; 6a, 6b).
17. Track junction as claimed in one of claims 1 to 16, characterised in that over the length of the track joint each holding plate (6; 6a, 6b) consists of a plurality of individual plate sections which are arranged adjacent to one another and fixed independently of one another on the support element (7).
EP86118112A 1986-01-30 1986-12-29 Track junction for expansion joints in railroad bridge decks Expired EP0231525B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86118112T ATE47441T1 (en) 1986-01-30 1986-12-29 ROAD TRANSITION FOR EXPANSION JOINTS AT RAILWAY BRIDGES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3602845 1986-01-30
DE19863602845 DE3602845A1 (en) 1986-01-30 1986-01-30 TRAILER TRANSITION FOR EXTENSION JOINT AT RAILWAY BRIDGES

Publications (2)

Publication Number Publication Date
EP0231525A1 EP0231525A1 (en) 1987-08-12
EP0231525B1 true EP0231525B1 (en) 1989-10-18

Family

ID=6292996

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86118112A Expired EP0231525B1 (en) 1986-01-30 1986-12-29 Track junction for expansion joints in railroad bridge decks

Country Status (4)

Country Link
EP (1) EP0231525B1 (en)
AT (1) ATE47441T1 (en)
DE (2) DE3602845A1 (en)
ES (1) ES2011012B3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030077142A (en) * 2002-03-25 2003-10-01 박대원 Flexible linking apparatus for bridges
CN108442244A (en) * 2018-03-19 2018-08-24 重庆交通大学 Pre-buried pedestal assembles replaceable expansion joint structure
CN114561869A (en) * 2022-03-16 2022-05-31 湖北楚天联发路桥养护有限公司 Fold line type asynchronous double-prevention expansion joint device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB955933A (en) * 1962-03-19 1964-04-22 Metalastick Ltd Improvements in or relating to roadway and like expansion joints
DE1162863B (en) * 1961-07-19 1964-02-13 Esslingen Maschf Covering device for expansion joints in bridges u. like
US3273473A (en) * 1963-12-05 1966-09-20 David R Black Jr Road expansion joint
BE707457A (en) * 1967-03-03 1968-04-16
DE2839159C2 (en) * 1978-09-08 1980-05-22 Gumba Gummi Im Bauwesen Gmbh, 8011 Vaterstetten Gangway construction for railway bridges

Also Published As

Publication number Publication date
DE3666472D1 (en) 1989-11-23
DE3602845A1 (en) 1987-08-06
ATE47441T1 (en) 1989-11-15
ES2011012B3 (en) 1989-12-16
DE3602845C2 (en) 1989-11-02
EP0231525A1 (en) 1987-08-12

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