EP0874084B1 - Scaffolding for the renovation of concrete bridges - Google Patents

Scaffolding for the renovation of concrete bridges Download PDF

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Publication number
EP0874084B1
EP0874084B1 EP98107188A EP98107188A EP0874084B1 EP 0874084 B1 EP0874084 B1 EP 0874084B1 EP 98107188 A EP98107188 A EP 98107188A EP 98107188 A EP98107188 A EP 98107188A EP 0874084 B1 EP0874084 B1 EP 0874084B1
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EP
European Patent Office
Prior art keywords
scaffolding
rail
support arm
bridge
support
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 - Lifetime
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EP98107188A
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German (de)
French (fr)
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EP0874084A1 (en
Inventor
Wolfgang Berens
Markus Dipl.-Ing. Brühl
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Gfb Gesellschaft fur Bauwerksabdichtungen Mbh
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Gfb Gesellschaft fur Bauwerksabdichtungen Mbh
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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
    • E01D19/10—Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
    • E01D19/106—Movable inspection or maintenance platforms, e.g. travelling scaffolding or vehicles specially designed to provide access to the undersides of bridges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges

Definitions

  • the invention relates to a scaffolding for renovation of concrete bridges, especially for renewing bridge caps.
  • Bridge caps On the outer longitudinal edges of concrete bridges are common Bridge caps provided for weathering of the support arms to prevent the bridge in this critical area.
  • the caps cast from concrete are in cross section L-shaped and cover the bridge in the area of the Pedestrian paths and along the outer longitudinal edges. Due to the weather, only the cap, but not the bridge itself, damaged. It is therefore required to replace the bridge cap occasionally. To do this, the cap is knocked off and then is a formwork along the longitudinal edge of the Bridge attached to pour a new cap.
  • the cap To knock off the cap must be under the cap or under a working scaffold to the bridge's supporting arm that carries the cap to be ordered. Be off the scaffolding the parts of the cap that fall off when knocked off collected. The scaffolding also serves subsequently for carrying a formwork scaffold for casting the new cap.
  • the boom is like this arcuate that he the longitudinal edge of the Embraces the support arm from above.
  • the work platform is parallel under the support arm Bridge arranged. From the work platform, the Support arm can be processed. Furthermore, from the work platform chipped off parts of the bridge cap as well as the formwork scaffold.
  • the scaffolding must be the same when casting the Wear the high concrete weight occurring bridge cap. Around to avoid tilting such a scaffolding, the car must have a heavy counterweight his. Because of the heavy weight of the scaffolding it is difficult to move. Also blocked the carriage of the scaffolding part of the road the bridge.
  • a scaffolding from which the preamble of the claim 1 starts, is known from DE 91 07 201 U.
  • this Working scaffolding is under the support arm of a bridge with dowels an anchoring device attached to the rail is attached, which is a long the rail Working platform.
  • the object of the invention is a scaffolding for renovation of concrete bridges so that there are high loads can record.
  • the anchoring device Holding device through a through hole in the Support arm extending tie rod on.
  • the tie rod is with one resting on the horizontal top of the support arm Anchoring element and with one on the horizontal angled underside of the support arm connected to the support arm.
  • the counterhold is opposite Tie rod can be tilted to accommodate different inclinations Always lay the underside of the support arm against it. Because the on the anchoring device acting tensile forces essentially from the tie rod to the one at the top of the support arm overlying anchoring element can be transferred from the anchoring device according to the invention considerably larger Forces as absorbed by an anchor. Therefore distances between the anchoring devices can be up to up to 3 m. Furthermore, the through holes be drilled from above, so that the effort to arrange the Anchoring is considerably less than dowelling Suspensions.
  • the holding device preferably has the work scaffold several that can be inserted into the supporting frame of the concrete bridge Anchoring devices that support the rail.
  • the Rail is hinged with each anchoring device connected with horizontal axis. Opposite one rigid with that The rail connected to the support arm is the one about a horizontal axis swiveling rail, for example, even with an inclined one Bottom of the support arm can be aligned vertically. Can also Inaccuracies in the assembly of the anchoring devices be balanced.
  • the same work scaffold for different bridges To be able to use is the height distance of the support roller from the support frame adjustable. So the scaffolding can do this aligned that the on the support frame Working platform is horizontal.
  • the work scaffold is made up of several pre-assembled ones Scaffolding units put together. Every scaffolding unit far in addition to the supporting frame supporting the work platform, several Drives and supports.
  • the scaffolding units are successively in the rail, which preferably over stretches the entire length of the bridge.
  • the end multiple scaffolding units have one Total length of at least 50 m, preferably at least 100 m, up. Thus a continuous length can be used Bridge cap to be concreted. Since the scaffolding units as Units can be hung in the rail, they can be pre-assembled. Therefore, the scaffolding can be opened and opened quickly be dismantled.
  • each scaffold unit has a powered drive. If several drives are provided, they are together synchronized.
  • the articulated with the counterholder over a horizontal axis is detectably connected.
  • the rail can the drives are always aligned.
  • an L-shaped Bridge cap 9 On an arm 8 of a concrete bridge is an L-shaped Bridge cap 9 arranged, the longitudinal edge of the support arm 8 protects against weathering.
  • a support frame 10th On the support arm 8 is attached to a scaffolding that a support frame 10th which has two mutually parallel supports 11, 12 and a carrier 13 running parallel to this Has a U-shaped cross section. Perpendicular to the beams 11, 12, 13 are carriers at regular intervals 14, 15 (Fig. 3). All carriers are with each other welded so that a rigid support frame 10th is formed.
  • a work platform 16 attached to the top of the support frame 10 partially covered. If the scaffolding on one Support arm 8 is attached to a concrete bridge, protrudes Working platform 16 partially above the support arm 8.
  • a Security railings 20 are provided on the left in Fig. 1 of the support frame 10. For attachment are provided on the support frame 10 tubular brackets 21, into the posts 22 of the security railing 20 are stuck. The posts 22 are horizontal Struts 23.24 connected.
  • the holding part 30 is by means of a bolt 31 with two abutting on the outer sides of the holding part 30 Retaining plates 32,33 connected.
  • the holding plates 32,33 are with a further bolt 34 with two receiving parts 35.36 connected.
  • the spaced apart Receiving parts 35,36 serve to hold one Drive 37.
  • the drive 37 has rotatably mounted rollers 40, 41 that face each other.
  • the rolls 40.41 are held by shafts 42, 43 in the receiving parts 35, 36.
  • the roller 41 is also with an electric Drive 44 connected.
  • the holding device of the scaffolding also has a rail 45 in the form of a double T-beam.
  • the Rollers 40, 41 of the drive 37 are displaceable in the rail arranged.
  • the rail 45 is with an anchoring device 46 in the support arm 8 8 of the bridge anchored.
  • the anchoring device 46 has one Joint of two rails 45.50 (Fig. 2) one Rail holder 47, 48, the rail holder 47 with the rail 45 and the rail holder 48 with the Rail 50 is welded.
  • the two rail holders 47.48 protrude into the rails 45.50 and are through a threaded bolt 51 and two nuts 52, 53 with each other connected. If the anchoring device 46 not at the joint of two rails 45.50 the connection between the two rail holders 47,48 by means of the threaded rod 51 are omitted.
  • the rail holders 47, 48 are with a counter holder 54 connected.
  • the counter holder 54 has two tabs 55, 56 on, which are arranged parallel to the rail holders 47,48 are.
  • the tabs 55, 56 are on horizontal axes 57.58 connected to the rail holders 47.48 and thus form a joint.
  • the counter holder 54 stiffening plates 60,61 (Fig. 1) on the two Firmly connect tabs 55, 56 together.
  • the tabs 55.56 and the stiffening plates 60.61 are with a counter plate 62 firmly connected.
  • the anchoring device 46 For fastening the anchoring device 46 is shown in the support arm 8 is provided with a through hole 64, through which a tie rod 65 is inserted.
  • the tie rod 65 consists of a threaded rod, the head of which is from below abuts the counter-holder plate 62.
  • the tie rod 65 protrudes through the through hole 64 and is at the Counterholder 54 opposite side with a screwed on Anchoring element 66 connected.
  • the anchoring element 66 is on the horizontal top 67 of the support arm 8.
  • For fastening the anchoring device 46 on the support arm 8 becomes the anchoring element 66 screwed onto the thread of the tie rod 65, so that the counter support 54 and the anchoring element 66 are clamped together.
  • the posts can also be designed in this way be on the anchoring element 66 protruding threaded part of the tie rod 65 can be screwed on are.
  • a support roller 73 is arranged.
  • the carrier 14 of the support frame 10 connected to a sheet 75 stiffened bracket 74.
  • the holder 74 are two sheets 76.77 in height slidably arranged.
  • the plates 76, 77 are connected to an axis 79, on which the support roller 73 is rotatably mounted. There the plates 76, 77 are displaceable in the holder 74, can the height distance of the roller 73 with respect to Support frame 10 vary. So the work platform 16 of the scaffolding always horizontal regardless of the inclination of the bottom 73 of the support arm 8 aligned become.
  • FIG. 3 shows a top view of part of the scaffolding, in which the support arm 8 of the bridge is not is shown.
  • the rail 45 are four drives 37 suspended, one of which is connected to the drive 44 is.
  • a scaffold unit 80 In the part of the Scaffolding is a scaffold unit 80.
  • Each scaffolding unit 80 has four beams 14 and 14 projecting above the work platform four beams not protruding above the work platform 16 15 on. These supports are perpendicular to them Carrier 11,12,13 connected to the support frame 10.
  • the carrier 14 is at the right end in FIG. 3 each support roller 73 attached. Also with the Carriers 14 are connected to the drives 37.
  • the scaffolding units 80 have a length of 9 m, so that six scaffolding units a scaffold with a Length of 54 m. Because of the great length of the scaffolding can be removed after knocking off the bridge cap 9 over the entire length of the scaffolding a new bridge cap can be concreted throughout. Then the work scaffold is shifted by its length, to the next piece of bridge cap 9 concrete. Since each scaffold unit has a drive 44, they can work together as a scaffold connected scaffolding units 80 moved together become. For this purpose, the drives 44 of the individual scaffold units 80 synchronized with each other.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Machines For Laying And Maintaining Railways (AREA)

Abstract

WPC6e. The holder unit has at least one trolley(37) moving along a rail with the frame suspended from it, and a support roller (73) engaging on the underside (63) of the arm. The holder unit also has several anchors (46) hooked into the support arm. The rail is connected to all anchors via a joint with horizontal axis. The height distance between support and support frame is adjustable for alignment of the scaffolding.

Description

Die Erfindung betrifft ein Arbeitsgerüst zur Sanierung von Betonbrücken, insbesondere zum Erneuern von Brükkenkappen.The invention relates to a scaffolding for renovation of concrete bridges, especially for renewing bridge caps.

An den äußeren Längskanten von Betonbrücken sind häufig Brückenkappen vorgesehen, um ein Verwittern der Tragarme der Brücke in diesem kritischen Bereich zu verhindern. Die aus Beton gegossenen Kappen sind im Querschnitt L-förmig und bedecken die Brücke im Bereich der Fußgängerwege und entlang der äußeren Längskanten. Durch Witterungseinflüsse wird somit nur die Kappe, nicht aber die Brücke selbst, beschädigt. Es ist daher erforderlich, die Brückenkappe gelegentlich zu erneuern. Hierzu wird die Kappe abgeschlagen und anschließend wird eine Verschalung entlang der Längskante der Brücke angebracht, um eine neue Kappe zu gießen. On the outer longitudinal edges of concrete bridges are common Bridge caps provided for weathering of the support arms to prevent the bridge in this critical area. The caps cast from concrete are in cross section L-shaped and cover the bridge in the area of the Pedestrian paths and along the outer longitudinal edges. Due to the weather, only the cap, but not the bridge itself, damaged. It is therefore required to replace the bridge cap occasionally. To do this, the cap is knocked off and then is a formwork along the longitudinal edge of the Bridge attached to pour a new cap.

Zum Abschlagen der Kappe muß unter der Kappe bzw. unter dem die Kappe tragenden Tragarm der Brücke ein Arbeitsgerüst angeordnet werden. Von dem Arbeitsgerüst werden die beim Abschlagen herunterfallenden Teile der Kappe aufgefangen. Ferner dient das Arbeitsgerüst anschließend zum Tragen eines Verschalungsgerüsts für das Gießen der neuen Kappe.To knock off the cap must be under the cap or under a working scaffold to the bridge's supporting arm that carries the cap to be ordered. Be off the scaffolding the parts of the cap that fall off when knocked off collected. The scaffolding also serves subsequently for carrying a formwork scaffold for casting the new cap.

Zum Sanieren der äußeren Längskanten von Brücken ist als Arbeitsgerüst ein auf der Brücke verschiebbarer Wagen mit Ausleger bekannt. Der Ausleger ist derart bogenförmig ausgebildet, daß er die Längskante des Tragarms von oben umgreift. Eine von dem Ausleger getragene Arbeitsbühne ist parallel unter dem Tragarm der Brücke angeordnet. Von der Arbeitsbühne aus kann der Tragarm bearbeitet werden. Ferner müssen von der Arbeitsbühne abgeschlagene Teile der Brückenkappe aufgefangen sowie das Verschalungsgerüst getragen werden. Insbesondere muß das Arbeitsgerüst das beim Gießen der Brückenkappe auftretende hohe Betongewicht tragen. Um ein Kippen eines solchen Arbeitsgerüstes zu vermeiden, muß der Wagen mit einem schweren Gegengewicht versehen sein. Aufgrund des hohen Gewichts des Arbeitsgerüstes ist dieses nur schwer verschiebbar. Ferner versperrt der Wagen des Arbeitsgerüstes einen Teil der Fahrbahn der Brücke.To renovate the outer longitudinal edges of bridges as a scaffolding, one that can be moved on the bridge Trolley with outrigger known. The boom is like this arcuate that he the longitudinal edge of the Embraces the support arm from above. One carried by the boom The work platform is parallel under the support arm Bridge arranged. From the work platform, the Support arm can be processed. Furthermore, from the work platform chipped off parts of the bridge cap as well as the formwork scaffold. In particular, the scaffolding must be the same when casting the Wear the high concrete weight occurring bridge cap. Around to avoid tilting such a scaffolding, the car must have a heavy counterweight his. Because of the heavy weight of the scaffolding it is difficult to move. Also blocked the carriage of the scaffolding part of the road the bridge.

Es ist ferner bekannt, ein Arbeitsgerüst an der Unterseite des Tragarms der Brücke aufzuhängen. Hierzu werden von einem Besichtigungswagen aus in dem Tragarm von unten Aufhängungen verdübelt. Besichtigungswagen sind an Brücken häufig vorgesehen. Sie eignen sich allerdings nur zum Besichtigen der Unterseite der Tragarme und nicht zur Gewichtsaufnahme. Ferner sind Besichtigungswagen nur wenige Meter lang. Da die Dübel der Aufhängungen auf Zug belastet werden und hohe Kräfte aufnehmen müssen, muss aus Sicherheitsgründen eine große Anzahl von Dübeln gesetzt werden. Üblicherweise kann ein Abstand von 75 cm zwischen zwei Aufhängungen nicht überschritten werden. Das Aufhängen eines Arbeitsgerüsts an einem Tragarm ist daher äußerst aufwendig.It is also known to have a scaffolding on the underside the suspension arm of the bridge. To do this from a sightseeing car in the support arm of dowels pegged below. Sightseeing cars are Often provided on bridges. However, they are suitable only for viewing the underside of the support arms and not for weight gain. There are also sightseeing cars just a few meters long. Because the dowels of the suspensions on train must be loaded and have to absorb high forces A large number of dowels are used for safety reasons. Usually a distance of 75 cm between two Suspensions are not exceeded. Hanging one Working scaffolding on a support arm is therefore extremely complex.

Ein Arbeitsgerüst, von dem der Oberbegriff des Patentanspruchs 1 ausgeht, ist bekannt aus DE 91 07 201 U. Bei diesem Arbeitsgerüst wird unter dem Tragarm einer Brücke mit Dübeln eine Verankerungsvorrichtung befestigt, an der eine Schiene befestigt ist, die eine längst der Schiene verfahrbare Arbeitsbühne trägt. An der Arbeitsbühne ist eine Stützrolle befestigt, die von unten gegen den Tragarm der Brücke drückt, so dass das Arbeitsgerüst bei Belastung nicht kippen kann.A scaffolding from which the preamble of the claim 1 starts, is known from DE 91 07 201 U. In this Working scaffolding is under the support arm of a bridge with dowels an anchoring device attached to the rail is attached, which is a long the rail Working platform. There is a support roller on the work platform attached, which presses against the support arm of the bridge from below, so that the scaffolding cannot tip over when loaded.

Aufgabe der Erfindung ist es, ein Arbeitsgerüst zur Sanierung von Betonbrücken derart auszubilden, dass es hohe Lasten aufnehmen kann.The object of the invention is a scaffolding for renovation of concrete bridges so that there are high loads can record.

Die Lösung der Aufgabe erfolgt erfindungsgemäß durch die Merkmale des Patentanspruchs 1.According to the invention, the object is achieved by Features of claim 1.

Erfindungsgemäß weist die Verankerungsvorrichtung der Haltevorrichtung einen durch eine Durchgangsbohrung in dem Tragarm verlaufenden Zuganker auf. Der Zuganker ist mit einem auf der horizontalen Oberseite des Tragarms aufliegenden Verankerungselement und mit einem auf der zur Horizontalen geneigten Unterseite des Tragarms anliegenden Gegenhalter fest mit dem Tragarm verbunden. Der Gegenhalter ist gegenüber dem Zuganker schrägstellbar, um bei unterschiedlichen Neigungen der Unterseite des Tragarms stets an dieser anzuliegen. Da die auf die Verankerungsvorrichtung wirkenden Zugkräfte im wesentlichen von dem Zuganker auf das an der Oberseite des Tragarms aufliegende Verankerungselement übertragen werden, können von der erfindungsgemäßen Verankerungsvorrichtung erheblich größere Kräfte als von einer Verdübelung aufgenommen werden. Daher können zwischen den Verankerungsvorrichtungen Abstände von bis zu 3 m realisiert werden. Ferner können die Durchgangsbohrungen von oben gebohrt werden, so dass der Aufwand zum Anordnen der Verankerungen erheblich geringer ist als das Verdübeln von Aufhängungen.According to the invention, the anchoring device Holding device through a through hole in the Support arm extending tie rod on. The tie rod is with one resting on the horizontal top of the support arm Anchoring element and with one on the horizontal angled underside of the support arm connected to the support arm. The counterhold is opposite Tie rod can be tilted to accommodate different inclinations Always lay the underside of the support arm against it. Because the on the anchoring device acting tensile forces essentially from the tie rod to the one at the top of the support arm overlying anchoring element can be transferred from the anchoring device according to the invention considerably larger Forces as absorbed by an anchor. Therefore distances between the anchoring devices can be up to up to 3 m. Furthermore, the through holes be drilled from above, so that the effort to arrange the Anchoring is considerably less than dowelling Suspensions.

Vorzugsweise weist die Haltevorrichtung des Arbeitsgerüsts mehrere in den Tragrahmen der Betonbrücke einsetzbare Verankerungsvorrichtungen auf, die die Schiene tragen. Die Schiene ist mit jeder Verankerungsvorrichtung über ein Gelenk mit horizontaler Achse verbunden. Gegenüber einer starr mit dem Tragarm verbundenen Schiene ist die um eine horizontale Achse schwenkbare Schiene beispielsweise auch bei einer geneigten Unterseite des Tragarms vertikal ausrichtbar. Ferner können Ungenauigkeiten bei der Montage der Verankerungsvorrichtungen ausgeglichen werden.The holding device preferably has the work scaffold several that can be inserted into the supporting frame of the concrete bridge Anchoring devices that support the rail. The Rail is hinged with each anchoring device connected with horizontal axis. Opposite one rigid with that The rail connected to the support arm is the one about a horizontal axis swiveling rail, for example, even with an inclined one Bottom of the support arm can be aligned vertically. Can also Inaccuracies in the assembly of the anchoring devices be balanced.

Um dasselbe Arbeitsgerüst für unterschiedliche Brücken verwenden zu können, ist der Höhenabstand der Stützrolle von dem Tragrahmen einstellbar. Somit kann das Arbeitsgerüst so ausgerichtet werden, dass die auf dem Tragrahmen befindliche Arbeitsbühne waagerecht ist. The same work scaffold for different bridges To be able to use is the height distance of the support roller from the support frame adjustable. So the scaffolding can do this aligned that the on the support frame Working platform is horizontal.

Vorzugsweise wird das Arbeitsgerüst aus mehreren vormontierten Gerüsteinheiten zusammengesetzt. Jede Gerüsteinheit weit zusätzlich zu dem die Arbeitsbühne tragenden Tragrahmen mehrere Laufwerke und Stützvorrichtungen auf. Die Gerüsteinheiten werden nacheinander in die Schiene, die sich vorzugsweise über die gesamte Länge der Brücke erstreckt, eingehängt. Das aus mehreren Gerüsteinheiten bestehende Arbeitsgerüst weist eine Gesamtlänge von mindestens 50 m, vorzugsweise von mindestens 100 m, auf. Somit kann auf einer großen Länge eine durchgehende Brückenkappe betoniert werden. Da die Gerüsteinheiten als Einheiten in die Schiene eingehängt werden, können sie vormontiert werden. Daher kann das Arbeitsgerüst schnell aufund abgebaut werden. Zum Verschieben des Arbeitsgerüstes weist vorzugsweise jede Gerüsteinheit ein angetriebenes Laufwerk auf. Sind mehrere Laufwerke vorgesehen, so sind diese miteinander synchronisiert.Preferably, the work scaffold is made up of several pre-assembled ones Scaffolding units put together. Every scaffolding unit far in addition to the supporting frame supporting the work platform, several Drives and supports. The scaffolding units are successively in the rail, which preferably over stretches the entire length of the bridge. The end multiple scaffolding units have one Total length of at least 50 m, preferably at least 100 m, up. Thus a continuous length can be used Bridge cap to be concreted. Since the scaffolding units as Units can be hung in the rail, they can be pre-assembled. Therefore, the scaffolding can be opened and opened quickly be dismantled. To move the scaffolding points preferably each scaffold unit has a powered drive. If several drives are provided, they are together synchronized.

Zur Verbindung des Gegenhalters mit der Schiene ist vorzugsweise ein Schienenhalter mit der Schiene verbunden, der mit dem Gegenhalter über eine horizontale Achse gelenkig feststellbar verbunden ist. Somit kann die Schiene bezüglich der Laufwerke stets ausgerichtet werden.To connect the counter holder to the rail preferably a rail holder connected to the rail, the articulated with the counterholder over a horizontal axis is detectably connected. Thus, the rail can the drives are always aligned.

Nachfolgend wird die Erfindung anhand einer bevorzugten Ausführungsform unter Bezugnahme auf die anliegenden Zeichnungen näher erläutert.The invention based on a preferred Embodiment with reference to the accompanying Drawings explained in more detail.

Es zeigen:

Fig. 1
eine schematische Schnittansicht eines an einem Tragarm einer Brücke befestigten Arbeitsgerüsts,
Fig. 2
eine Ansicht der Verankerungsvorrichtung einer Schiene bezüglich Fig. 1 von links, und
Fig. 3
eine Schnittansicht entlang der Linie I-I in Fig. 1.
Show it:
Fig. 1
1 shows a schematic sectional view of a scaffold attached to a support arm of a bridge,
Fig. 2
a view of the anchoring device of a rail with respect to FIG. 1 from the left, and
Fig. 3
2 shows a sectional view along the line II in FIG. 1.

An einem Tragarm 8 einer Betonbrücke ist eine L-förmige Brückenkappe 9 angeordnet, die die Längskante des Tragarms 8 vor Verwitterung schützt. An dem Tragarm 8 ist ein Arbeitsgerüst befestigt, das einen Tragrahmen 10 aufweist, der zwei zueinander parallele Träger 11,12 und einen parallel zu diesen verlaufenen Träger 13 mit U-förmigem Querschnitt aufweist. Senkrecht zu den Trägern 11,12,13 sind in regelmäßigen Abständen Träger 14,15 (Fig. 3) angeordnet. Sämtliche Träger sind miteinander verschweißt, so daß ein steifer Tragrahmen 10 gebildet ist.On an arm 8 of a concrete bridge is an L-shaped Bridge cap 9 arranged, the longitudinal edge of the support arm 8 protects against weathering. On the support arm 8 is attached to a scaffolding that a support frame 10th which has two mutually parallel supports 11, 12 and a carrier 13 running parallel to this Has a U-shaped cross section. Perpendicular to the beams 11, 12, 13 are carriers at regular intervals 14, 15 (Fig. 3). All carriers are with each other welded so that a rigid support frame 10th is formed.

Auf der Oberseite des Tragrahmens 10 ist eine Arbeitsbühne 16 befestigt, die die Oberseite des Tragrahmens 10 teilweise bedeckt. Wenn das Arbeitsgerüst an einem Tragarm 8 einer Betonbrücke befestigt ist, ragt die Arbeitsbühne 16 teilweise über den Tragarm 8 vor. An der in Fig. 1 linken Seite des Tragrahmens 10 ist ein Sicherheitsgeländer 20 vorgesehen. Zur Befestigung sind an dem Tragrahmen 10 rohrförmige Halterungen 21 vorgesehen, in die Pfosten 22 des Sicherheitsgeländers 20 gesteckt sind. Mit den Pfosten 22 sind waagerechte Streben 23,24 verbunden.On the top of the support frame 10 is a work platform 16 attached to the top of the support frame 10 partially covered. If the scaffolding on one Support arm 8 is attached to a concrete bridge, protrudes Working platform 16 partially above the support arm 8. On the left in Fig. 1 of the support frame 10 is a Security railings 20 are provided. For attachment are provided on the support frame 10 tubular brackets 21, into the posts 22 of the security railing 20 are stuck. The posts 22 are horizontal Struts 23.24 connected.

Mit dem parallel zur Längskante der Brücke verlaufenden Träger 12 des Tragrahmens 10 ist ein Halteteil 30 fest verbunden. Das Halteteil 30 ist mittels eines Bolzens 31 mit zwei an den Außenseiten des Halteteils 30 anliegenden Halteblechen 32,33 verbunden. Die Haltebleche 32,33 sind mit einem weiteren Bolzen 34 mit zwei Aufnahmenteilen 35,36 verbunden. Die voneinander beabstandeten Aufnahmeteile 35,36 dienen zur Aufnahme eines Laufwerks 37.With the one running parallel to the longitudinal edge of the bridge Carrier 12 of the support frame 10 is a holding part 30 fixed connected. The holding part 30 is by means of a bolt 31 with two abutting on the outer sides of the holding part 30 Retaining plates 32,33 connected. The holding plates 32,33 are with a further bolt 34 with two receiving parts 35.36 connected. The spaced apart Receiving parts 35,36 serve to hold one Drive 37.

Das Laufwerk 37 weist drehbar gelagerte Rollen 40,41 auf, die einander gegenüberliegen. Die Rollen 40,41 sind über Wellen 42,43 in den Aufnahmeteilen 35,36 gehalten. Die Rolle 41 ist ferner mit einem elektrischen Antrieb 44 verbunden.The drive 37 has rotatably mounted rollers 40, 41 that face each other. The rolls 40.41 are held by shafts 42, 43 in the receiving parts 35, 36. The roller 41 is also with an electric Drive 44 connected.

Die Haltevorrichtung des Arbeitsgerüstes weist ferner eine Schiene 45 in Form eines Doppel-T-Trägers auf. Die Rollen 40,41 des Laufwerks 37 sind in der Schiene verschiebbar angeordnet. Die Schiene 45 ist mit einer Verankerungsvorrichtung 46 in dem Tragarm 8 8 der Brücke verankert. Die Verankerungsvorrichtung 46 weist an einer Stoßstelle zweier Schienen 45,50 (Fig. 2) einen Schienenhalter 47,48 auf, wobei der Schienenhalter 47 mit der Schiene 45 und der Schienenhalter 48 mit der Schiene 50 verschweißt ist. Die beiden Schienenhalter 47,48 stehen in die Schienen 45,50 vor und sind durch einen Gewindebolzen 51 und zwei Muttern 52,53 miteinander verbunden. Sofern sich die Verankerungsvorrichtung 46 nicht an der Stoßstelle zweier Schienen 45,50 befindet, kann die Verbindung der beiden Schienenhalter 47,48 mittels der Gewindestange 51 entfallen.The holding device of the scaffolding also has a rail 45 in the form of a double T-beam. The Rollers 40, 41 of the drive 37 are displaceable in the rail arranged. The rail 45 is with an anchoring device 46 in the support arm 8 8 of the bridge anchored. The anchoring device 46 has one Joint of two rails 45.50 (Fig. 2) one Rail holder 47, 48, the rail holder 47 with the rail 45 and the rail holder 48 with the Rail 50 is welded. The two rail holders 47.48 protrude into the rails 45.50 and are through a threaded bolt 51 and two nuts 52, 53 with each other connected. If the anchoring device 46 not at the joint of two rails 45.50 the connection between the two rail holders 47,48 by means of the threaded rod 51 are omitted.

Die Schienenhalter 47,48 sind mit einem Gegenhalter 54 verbunden. Der Gegenhalter 54 weist zwei Laschen 55,56 auf, die parallel zu den Schienenhaltern 47,48 angeordnet sind. Die Laschen 55,56 sind über horizontale Achsen 57,58 mit den Schienenhaltern 47,48 verbunden und bilden somit ein Gelenk. Ferner weist der Gegenhalter 54 Versteifungsbleche 60,61 (Fig. 1) auf, die die beiden Laschen 55,56 fest miteinander verbinden. Die Laschen 55,56 und die Versteifungsbleche 60,61 sind mit einer Gegenhalterplatte 62 fest verbunden.The rail holders 47, 48 are with a counter holder 54 connected. The counter holder 54 has two tabs 55, 56 on, which are arranged parallel to the rail holders 47,48 are. The tabs 55, 56 are on horizontal axes 57.58 connected to the rail holders 47.48 and thus form a joint. Furthermore, the counter holder 54 stiffening plates 60,61 (Fig. 1) on the two Firmly connect tabs 55, 56 together. The tabs 55.56 and the stiffening plates 60.61 are with a counter plate 62 firmly connected.

Aufgrund der Gelenkverbindung zwischen den Schienenhaltern 47,48 und dem Gegenhalter 54 kann eine Neigung der Unterseite 63 (Fig. 1) des Tragarms 8 ausgeglichen werden. Somit ist trotz der Neigung der Unterseite 63 des Tragarms 8 die Schiene 45 vertikal ausgerichtet. Um ein Pendeln des Arbeitsgerüsts zu vermeiden, ist die Gelenkverbindung feststellbar.Due to the articulated connection between the rail holders 47,48 and the counter-holder 54 can be inclined Bottom 63 (Fig. 1) of the support arm 8 can be compensated. Thus, despite the inclination of the bottom 63 Bracket 8 vertically aligned the rail 45. To a The articulated connection is to prevent the scaffolding from swinging ascertainable.

Zur Befestigung der Verankerungsvorrichtung 46 ist in dem Tragarm 8 eine Durchgangsbohrung 64 vorgesehen, durch die ein Zuganker 65 gesteckt ist. Der Zuganker 65 besteht aus einer Gewindestange, deren Kopf von unten an der Gegenhalterplatte 62 anliegt. Der Zuganker 65 ragt durch die Durchgangsbohrung 64 und ist an der dem Gegenhalter 54 gegenüberliegenden Seite mit einem aufgeschraubten Verankerungselement 66 verbunden. Das Verankerungselement 66 liegt an der horizontalen Oberseite 67 des Tragarmes 8 an. Zur Befestigung der Verankerungsvorrichtung 46 an dem Tragarm 8 wird das Verankerungselement 66 auf das Gewinde des Zugankers 65 aufgeschraubt, so daß der Gegenhalter 54 und das Verankerungselement 66 miteinander verspannt sind.For fastening the anchoring device 46 is shown in the support arm 8 is provided with a through hole 64, through which a tie rod 65 is inserted. The tie rod 65 consists of a threaded rod, the head of which is from below abuts the counter-holder plate 62. The tie rod 65 protrudes through the through hole 64 and is at the Counterholder 54 opposite side with a screwed on Anchoring element 66 connected. The anchoring element 66 is on the horizontal top 67 of the support arm 8. For fastening the anchoring device 46 on the support arm 8 becomes the anchoring element 66 screwed onto the thread of the tie rod 65, so that the counter support 54 and the anchoring element 66 are clamped together.

Wenn an dem Tragarm 8 der Brücke die Brückenkappe 9 angebracht ist, wird in die Brückenkappe 9 eine Bohrung 71 gebohrt, in die das Verankerungselement 66 versenkt wird, so daß das Verankerungselement 66 auch bei Vorhandensein einer Brückenkappe 9 auf der Oberseite 62 des Tragarms 8 aufliegt. Mit dem Verankerungselement 66 können aus Sicherheitsgründen Pfosten eines Geländers verbunden werden. Die Pfosten können auch so ausgebildet sein, daß sie auf den über das Verankerungselement 66 vorstehenden Gewindeteil des Zugankers 65 aufschraubbar sind.If the bridge cap 9 on the support arm 8 of the bridge is attached, a hole in the bridge cap 9 71 drilled, in which the anchoring element 66 sunk is so that the anchoring element 66 also in the presence a bridge cap 9 on the top 62 of the support arm 8 rests. With the anchoring element 66 can post a railing for security reasons get connected. The posts can also be designed in this way be on the anchoring element 66 protruding threaded part of the tie rod 65 can be screwed on are.

Da die Arbeitsbühne 16 über den Tragarm 8 vorsteht und die Arbeitsbühne 16 das Gewicht der abgeschlagenen Brückenkappe 9 bzw. das Gewicht einer Verschalung zum Gießen der Brückenkappe 9 aufnehmen muß, ist mit dem in Fig. 1 rechten Ende des Tragrahmens 10, der unter dem Tragarm 8 vorsteht, eine Stützrolle 73 angeordnet. Hierzu ist mit dem Träger 14 des Tragrahmens 10 eine mit einem Blech 75 versteifte Halterung 74 verbunden. In der Halterung 74 sind zwei Bleche 76,77 in der Höhe verschiebbar angeordnet. Mittels eines Bolzens 78 läßt sich die Lage der Bleche 76,77 bezüglich der Halterung 74 einstellen. An dem der Halterung 74 abgewandten Ende der Bleche 76,77 sind diese mit einer Achse 79 verbunden, auf der die Stützrolle 73 drehbar gelagert ist. Da die Bleche 76,77 in der Halterung 74 verschiebbar sind, läßt sich der Höhenabstand der Rolle 73 bezüglich des Tragrahmens 10 variieren. Somit kann die Arbeitsbühne 16 des Arbeitsgerüsts stets horizontal unabhängig von der Neigung der Unterseite 73 des Tragarms 8 ausgerichtet werden.Since the working platform 16 protrudes over the support arm 8 and the work platform 16 the weight of the chopped off Bridge cap 9 or the weight of a casing for Pouring the bridge cap 9 must be included in the Fig. 1 right end of the support frame 10, which under the Support arm 8 protrudes, a support roller 73 is arranged. For this purpose, one with the carrier 14 of the support frame 10 connected to a sheet 75 stiffened bracket 74. In the holder 74 are two sheets 76.77 in height slidably arranged. By means of a bolt 78 leaves the position of the sheets 76.77 with respect to the bracket 74 set. At the end facing away from the holder 74 the plates 76, 77 are connected to an axis 79, on which the support roller 73 is rotatably mounted. There the plates 76, 77 are displaceable in the holder 74, can the height distance of the roller 73 with respect to Support frame 10 vary. So the work platform 16 of the scaffolding always horizontal regardless of the inclination of the bottom 73 of the support arm 8 aligned become.

Fig. 3 zeigt eine Draufsicht auf einen Teil des Arbeitsgerüsts, in der der Tragarm 8 der Brücke nicht dargestellt ist. In die Schiene 45 sind vier Laufwerke 37 eingehängt, von denen eines mit dem Antrieb 44 verbunden ist. Bei dem in Fig. 3 dargestellten Teil des Arbeitsgerüsts handelt es sich um eine Gerüsteinheit 80. Um ein Arbeitsgerüst in einer Gesamtlänge von mindestens 50 m, vorzugsweise mindestens 100 m, an einer Brücke aufzuhängen, werden mehrere Gerüsteinheiten 80 in einer Reihe angeordnet. Jede Gerüsteinheit 80 weist vier über die Arbeitsbühne 16 vorstehende Träger 14 und vier nicht über die Arbeitsbühne 16 vorstehende Träger 15 auf. Diese Träger sind über senkrecht zu ihnen verlaufende Träger 11,12,13 zu dem Tragrahmen 10 verbunden. An dem in Fig. 3 rechten Ende der Träger 14 ist jeweils die Stützrolle 73 befestigt. Ebenfalls mit den Trägern 14 sind die Laufwerke 37 verbunden.3 shows a top view of part of the scaffolding, in which the support arm 8 of the bridge is not is shown. In the rail 45 are four drives 37 suspended, one of which is connected to the drive 44 is. In the part of the Scaffolding is a scaffold unit 80. Around a work scaffold with a total length of at least 50 m, preferably at least 100 m, on one When hanging the bridge, several scaffolding units become 80 arranged in a row. Each scaffolding unit 80 has four beams 14 and 14 projecting above the work platform four beams not protruding above the work platform 16 15 on. These supports are perpendicular to them Carrier 11,12,13 connected to the support frame 10. The carrier 14 is at the right end in FIG. 3 each support roller 73 attached. Also with the Carriers 14 are connected to the drives 37.

Um das Arbeitsgerüst an einem Tragarm 8 (Fig. 1) einer Brücke zu befestigen, werden zuerst in einem Abstand von 3 m Durchgangsbohrungen 64 von oben in den Tragarm 8 gebohrt. Konzentrisch zu diesen werden die Bohrungen 71 (Fig. 1) in der Brückenkappe 9 angeordnet. Mit Hilfe eines Kranes oder fahrbaren Gerüstes setzt ein Gerüstbauer von unten in jede Durchgangsbohrung 64 einen Zuganker 65 mit Gegenhalter 54 ein. Jeder Zuganker 65 wird von oben jeweils mit einem Verankerungselement 66 gesichert. Anschließend werden von dem Kran aus mit den Gegenhaltern 54 über die horizontalen Achsen 57,58 (Fig. 2) und die Schienenhalter 46,48 die Schienen 45,50 verbunden. Die Schienen 45,50 weisen entsprechend dem Abstand der Bohrungen 64 ebenfalls eine Länge von 3 m auf, so daß jedes Verankerungselement 46 entsprechend Fig. 2 zwei Schienen 45,50 fixiert.To the scaffolding on a support arm 8 (Fig. 1) one Fasten the bridge first at a distance of 3 m through holes 64 from above into the support arm 8 drilled. The holes become concentric with these 71 (Fig. 1) arranged in the bridge cap 9. With help a scaffold erects a crane or mobile scaffold a tie rod from below into each through hole 64 65 with counterholder 54. Each tie rod is 65 each secured from above with an anchoring element 66. Subsequently, from the crane with the counterholders 54 over the horizontal axes 57, 58 (Fig. 2) and the rail holder 46, 48 connected to the rails 45, 50. The rails 45, 50 have a corresponding distance the holes 64 also have a length of 3 m on so that each anchoring element 46 accordingly Fig. 2 fixed two rails 45.50.

Sobald über die gesamte Länge der Brücke Schienen 45,50 montiert sind, werden mit Hilfe des Krans vormontierte Gerüsteinheiten 80 (Fig. 3) in die Schienen 45,50 mittels der Laufwerke 37 eingehängt. Die Gerüsteinheiten 80 weisen eine Länge von 9 m auf, so daß sechs Gerüsteinheiten in einer Reihe angeordnet ein Gerüst mit einer Länge von 54 m ergeben. Aufgrund der großen Länge des Arbeitsgerüsts kann nach dem Abschlagen der Brükkenkappe 9 über die gesamte Länge des Arbeitsgerüsts eine neue Brückenkappe durchgehend betoniert werden. Anschließend wird das Arbeitsgerüst um seine Länge verschoben, um das nächste Stück der Brückenkappe 9 zu betonieren. Da jede Gerüsteinheit einen Antrieb 44 aufweist, können die zu einem Arbeitsgerüst miteinander verbundenen Gerüsteinheiten 80 gemeinsam verschoben werden. Hierzu sind die Antriebe 44 der einzelnen Gerüsteinheiten 80 miteinander synchronisiert.As soon as the entire length of the bridge rails 45.50 assembled, are pre-assembled using the crane Scaffolding units 80 (Fig. 3) in the rails 45.50 by means of the drives 37 mounted. The scaffolding units 80 have a length of 9 m, so that six scaffolding units a scaffold with a Length of 54 m. Because of the great length of the scaffolding can be removed after knocking off the bridge cap 9 over the entire length of the scaffolding a new bridge cap can be concreted throughout. Then the work scaffold is shifted by its length, to the next piece of bridge cap 9 concrete. Since each scaffold unit has a drive 44, they can work together as a scaffold connected scaffolding units 80 moved together become. For this purpose, the drives 44 of the individual scaffold units 80 synchronized with each other.

Claims (9)

  1. Scaffolding for the renovation of concrete bridges, comprising a holding device for mounting a support frame (10) to a support arm (8) of the concrete bridge, a work platform (16) supported by the support frame (10), at least one traveling gear (37) displaceable along a rail (45), from which gear the support frame (10) is suspended, and at least one anchoring device (46),
    characterized in that
    the anchoring device comprises a tie rod (65) extending through a throughbore (64) in the support arm (8), the tie rod being connected to an anchoring element (66) adapted to be placed on the horizontal top surface (67) of the support arm (8) and, on the bottom side (63) of the support arm (8) inclined to the horizontal, to a counter brace (54) connected to the rail (45) and having a counter brace plate (62) adapted to be inclined relative to the tie rod (65) and resting on the bottom side (63) of the support arm (8).
  2. The scaffolding of claim 1, wherein, for connecting the counter brace (54) to the rail (45, 50), a rail holder (47, 48) rigidly connected to the rail (45) is provided which is connected to the counter brace (54) through a horizontal axis (57, 58) so as to be articulately fixed.
  3. The scaffolding of claim 1 or 2, wherein for a bridge, where the support arm (8) is provided with a bridge edge (9), the anchoring element (66) and the upper end of the tie rod (65) being sunk in a bore (71) in the bridge edge (9).
  4. The scaffolding of one of claims 1 to 3, wherein the end of the anchoring device (46) opposite the rail (45, 50) may be mounted with a post of a rail.
  5. The scaffolding of one of claims 1 to 4, wherein the holding device has at least one support roller (73) adapted to be set against the bottom side (63) of the support arm (8).
  6. The scaffolding of claim 5, wherein the vertical distance of the support roller (73) from the support frame (10) is adjustable for orientating the scaffolding.
  7. The scaffolding of one of claims 1 to 6, wherein the scaffolding comprises a plurality of traveling gears (37) cooperating with the same rail (45), at least one of the traveling gears having a drive (44).
  8. The scaffolding of one of claims 5-7, wherein a plurality of pre-assembled scaffolding units (80), each having a plurality of traveling gears (37) and support rollers (73), are connected in a row and have a total length of at least 50 m, preferably at least 100 m.
  9. The scaffolding of claim 8, wherein the drives (44) of all scaffolding units (80) are synchronized.
EP98107188A 1997-04-25 1998-04-21 Scaffolding for the renovation of concrete bridges Expired - Lifetime EP0874084B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29707488U DE29707488U1 (en) 1997-04-25 1997-04-25 Scaffolding for the renovation of concrete bridges
DE29707488U 1997-04-25

Publications (2)

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EP0874084A1 EP0874084A1 (en) 1998-10-28
EP0874084B1 true EP0874084B1 (en) 2003-10-29

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EP (1) EP0874084B1 (en)
AT (1) ATE253144T1 (en)
DE (2) DE29707488U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102704413A (en) * 2012-06-25 2012-10-03 上海同罡建筑工程有限公司 Construction method for jacking arch bridge

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005013991B3 (en) * 2005-03-26 2006-11-23 Döllen, Heinz von Mobile working frame for bridge has sub frames mounted on bridge with roller ways for movable staging operated by winches
GB2488983C (en) * 2011-03-08 2014-12-03 Suspended structure, scaffolding or formwork system
CN104195960B (en) * 2014-08-29 2017-01-25 项伟轩 Suspension type bridge maintenance air operation platform system
DE202018101994U1 (en) 2018-04-12 2019-07-17 Quick Bauprodukte Gesellschaft mit beschränkter Haftung Mobile scaffolding
CN114396425B (en) * 2022-02-18 2023-02-03 中国商用飞机有限责任公司 Roller device with adjustable supporting rigidity

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3115239A1 (en) * 1981-04-15 1982-11-04 Winfried Dipl.-Ing. 6365 Rosbach Schnabel Device as a scaffold for driving, in sections, under concrete bridges
DE9107201U1 (en) * 1990-09-21 1991-08-08 Alfred Kunz GmbH & Co, 8000 München Formwork for concreting caps or cornices on an elongated structure, preferably a bridge
DE19526964A1 (en) * 1995-07-24 1997-01-30 Otto Huneke Temporary mobile platform for access esp. in bridge repair - has mobile working stage with counterweight adjustable in position supported by cable of assembly attached under bridge deck projections

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102704413A (en) * 2012-06-25 2012-10-03 上海同罡建筑工程有限公司 Construction method for jacking arch bridge

Also Published As

Publication number Publication date
EP0874084A1 (en) 1998-10-28
ATE253144T1 (en) 2003-11-15
DE59809996D1 (en) 2003-12-04
DE29707488U1 (en) 1998-08-27

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