EP3494259B1 - Bridge prop for propping a bridge segment and method for operating bridge props - Google Patents

Description

The invention relates to bridge support devices, to support modules for bridge support devices and to a method for operating a bridge support device.

In the case of methods for dismantling or demolishing bridges, in particular prestressed concrete bridges, which are common nowadays, the superstructure to be demolished is temporarily supported at several support points distributed in the longitudinal direction of the bridge. For example, spacers in the form of wooden blocks are used as support points, which are clamped between the bridge section to be supported and an underlying construction aid, such as a scaffold or the like.

From the German Offenlegungsschrift DE 44 21 452 A1 a transport device with height-adjustable wheels for transporting bridge parts is known.

The German interpretation document DE 1 123 356 B discloses a movable assembly device with a liftable and lowerable platform.

The German patent specification DE 42 32 126 C1 describes a method for assembling and dismantling single-span and multi-span bridges.

The invention is based on the object of specifying a bridge support device for supporting a bridge segment, which enables bridges to be dismantled or torn down particularly easily.

According to the invention, this object is achieved by a bridge support device having the features according to claim 1. Advantageous embodiments of the bridge support device according to the invention are specified in the subclaims.

According to the invention, it is provided that the bridge support device has at least one wheel which enables the bridge support device to be moved on a construction aid, in particular a shoring or feed frame, arranged below the bridge segment. It is also provided that the wheels are height-adjustable and can be extended into a travel position in which the wheels lift one or more chassis of the bridge support device and enable a movement on the construction aid, and also can be moved into a support position in which one or more are Support the chassis of the bridge support device on the construction aid and the wheels are completely or - compared to the travel position - at least partially relieved. The bridge support device comprises two support modules that can be connected to and separated from one another, each of which comprises a chassis and one or more wheels and, in the separated state, can be moved individually on the construction aid. Each of the support modules has a cross member, which can be connected with its carrier end remote from the chassis to a carrier end of the cross member of the other of the two support modules, in particular by means of a bolt connection. Each of the two support modules each has a bogie which enables at least one component of the respective support module, in particular a cross member of the respective support module, to rotate relative to the chassis.

A significant advantage of the bridge support device according to the invention is that it can be moved below the bridge segment and can thus be repositioned in a very simple manner as soon as this becomes necessary in the context of the bridge demolition. In addition, it is possible to drive past bridge piers.

Each of the support modules preferably has a transverse shifting device, in particular in the form of a hydraulic transverse shifting cylinder, which enables the transverse support to be displaced relative to the chassis and / or bogie in the longitudinal direction of the transverse support.

Each of the support modules preferably has a lifting device, in particular a lifting device comprising a hydraulic cylinder, which enables the crossbeam to be raised in the direction of a bridge segment above it for the purpose of supporting the bridge segment by means of the crossbeam, and also enables the crossbeam to be lowered for the purpose of spatial separation of the cross member from the bridge segment.

It is also advantageous if a support section (e.g. in the form of a central support point) of the crossbeam is supported on the lifting device and is raised or lowered by this, the position of the support section relative to at least one other section, in particular one for support a bridge segment provided section of the cross member is adjustable.

• die Brückenstützeinrichtung zwei miteinander verbindbare und voneinander trennbare Stützmodule umfasst, die jeweils ein Fahrgestell und ein oder mehrerer Räder umfassen und im getrennten Zustand einzeln und im geschlossenen Zustand gemeinsam auf dem Baubehelf verfahrbar sind,
• jedes der Stützmodule jeweils einen höhenverstellbaren Querträger aufweist, der mit seinem vom Fahrgestell entfernten Trägerende mit einem Trägerende des Querträgers des jeweils anderen der zwei Stützmodule, insbesondere mittels einer Bolzenverbindung, verbindbar ist,
• jedes der zwei Stützmodule jeweils ein Drehgestell aufweist, das ein Drehen des Querträgers des jeweiligen Stützmoduls relativ zu dessen Fahrgestell ermöglicht,
• wobei zumindest bei solchen Verfahrphasen, bei denen ein Brückpfeiler passiert wird,
  • zunächst die Verbindung zwischen den Trägerenden der Querträger der zwei Stützmodule getrennt wird,
  • die Querträger auf ihrem oder mittels ihres Drehgestells jeweils um 90 Grad oder zumindest um einen Winkel, der ein Passieren des jeweiligen Querträgers am Brückpfeiler vorbei ermöglicht, gedreht werden,
  • die Stützmodule jeweils in Brückenlängsrichtung an dem Brückenpfeiler vorbeigefahren werden,
  • die Querträger nach dem Vorbeifahren am Brückenpfeiler auf ihrem oder mittels ihres Drehgestells jeweils zurückgedreht werden, bis die Trägerenden der Querträger einander gegenüber liegen, und
  • die Trägerenden der Querträger der zwei Stützmodule anschließend wieder miteinander verbunden werden.

The invention also relates to a method for operating a bridge support device with the features according to patent claim 5. With regard to such a method, the invention provides that, within the framework of the method, the bridge support device is used in support phases for supporting a bridge segment and in movement phases on a below the Bridge segment arranged building aid, in particular supporting or advancing scaffolding, is moved in the longitudinal direction of the bridge. It is also provided that

• the bridge support device comprises two support modules that can be connected to and separated from one another, each comprising a chassis and one or more wheels and which can be moved individually in the separated state and together on the construction aid in the closed state,
• each of the support modules has a height-adjustable cross member, which can be connected with its carrier end remote from the chassis to a carrier end of the cross member of the other of the two support modules, in particular by means of a bolt connection,
• each of the two support modules each has a bogie that enables the cross member of the respective support module to rotate relative to its chassis,
• where at least for those travel phases in which a bridge pillar is passed,
  • first the connection between the beam ends of the cross beams of the two support modules is separated,
  • the crossbeams are rotated on their or by means of their bogie by 90 degrees or at least by an angle that enables the respective crossbeam to pass past the bridge pillar,
  • the support modules are driven past the bridge piers in the longitudinal direction of the bridge,
  • the cross girders are rotated back after driving past the bridge piers on their or by means of their bogie until the girder ends of the cross girders are opposite one another, and
  • the beam ends of the cross members of the two support modules are then connected to one another again.

With regard to the advantages of the method according to the invention, reference is made to the statements above.

It is considered advantageous if, before the start of each travel phase, at least one or more height-adjustable wheels of the bridge support device are extended into a travel position in which the wheels lift one or more chassis of the bridge support device and allow the bridge support device to move on the building site, and before the start of each support phase, the height-adjustable wheels are retracted into a support position in which one or more chassis of the bridge support device are supported on the construction aid and the wheels are completely or - compared to the displacement position - at least partially relieved.

• jedes der Stützmodule jeweils eine Querverschiebeeinrichtung, insbesondere in Form eines hydraulischen Querverschiebezylinders, aufweist,
• nach dem Trennen der Verbindung zwischen den Querträgern und vor dem Drehen der Querträger die Trägerenden der zwei Querträger jeweils mittels ihrer Querverschiebeeinrichtung voneinander weg bewegt werden, und zwar jeweils entlang der jeweiligen Querträgerlängsrichtung, und ein Spalt zwischen den Trägerenden gebildet wird,
• nach dem Passieren des Brückenpfeilers und nach dem Zurückdrehen der Querträger die Trägerenden aufeinander zu bewegt werden, jeweils entlang der Querträgerlängsrichtung, und
• anschließend die Trägerenden verbunden werden.

It is also beneficial if

• each of the support modules each has a transverse displacement device, in particular in the form of a hydraulic transverse displacement cylinder,
• after separating the connection between the crossbeams and before rotating the crossbeams, the carrier ends of the two crossbeams are each moved away from each other by means of their transverse displacement device, in each case along the respective crossbeam longitudinal direction, and a gap is formed between the carrier ends,
• after passing the bridge pier and after turning back the cross member, the carrier ends are moved towards each other, in each case along the longitudinal direction of the cross member, and
• then the beam ends are connected.

A bridge segment is preferably supported in such a way that there are no unfavorable relative movements of the bridge section to be supported.

The bridge section is preferably held in its original position by the bridge support device.

The height of the bridge segment to be supported is preferably continuously recorded by measuring technology, and any discrepancies detected are preferably compensated for by automatically extending or retracting the lifting devices (e.g. hydraulic cylinders) and the support sections (also called central support points here).

The load on the bridge support device can also be continuously measured using measurements, and any discrepancies detected can be compensated for by automatically extending and retracting the lifting devices (e.g. hydraulic cylinders) and the central support points.

The bridge segment to be supported is preferably supported by alternately activating / deactivating one of the two bridge supporting devices at different points on the bridge segment.

Figur 1

ein Ausführungsbeispiel für eine Anordnung mit zwei Brückenstützeinrichtungen, die jeweils durch zwei miteinander verbundene Stützmodule gebildet sind,

Figur 2

eines der Stützmodule der Brückenstützeinrichtungen gemäß Figur 1 näher im Detail,

Figur 3

eine Hebeeinrichtung des Stützmoduls gemäß Figur 2 näher im Detail,

Figur 4

eines der Räder des Stützmoduls gemäß Figur 2 näher im Detail,

Figur 5

das Stützmodul gemäß Figur 2 in einer dreidimensionalen Darstellung schräg von unten,

Fig. 6-9

das Öffnen eines Ausführungsbeispiels für eine Bolzenverbindung, die zwei Stützmodule miteinander verbindet,

Fig. 10-13

in einer Darstellung von der Seite ein Ausführungsbeispiel für einen Abbruchbetrieb mit Hilfe der zwei Brückenstützeinrichtungen gemäß Figur 1 und

Fig. 14-18

das Vorbeifahren der Brückenstützeinrichtungen gemäß Figur 1 an einem Brückenpfeiler einer später abzutragenden Brücke.

The invention is explained in more detail below on the basis of exemplary embodiments; show by way of example:

Figure 1

an embodiment of an arrangement with two bridge support devices, each formed by two interconnected support modules,

Figure 2

one of the support modules of the bridge support devices according to Figure 1 in more detail,

Figure 3

a lifting device of the support module according to Figure 2 in more detail,

Figure 4

one of the wheels of the support module according to Figure 2 in more detail,

Figure 5

the support module according to Figure 2 in a three-dimensional representation diagonally from below,

Fig. 6-9

the opening of an exemplary embodiment for a bolt connection that connects two support modules to one another,

Fig. 10-13

in a representation from the side, an exemplary embodiment for a demolition operation with the aid of the two bridge support devices according to FIG Figure 1 and

Fig. 14-18

the passing of the bridge support devices according to Figure 1 on a bridge pillar of a bridge to be removed later.

For the sake of clarity, the same reference symbols are always used in the figures for identical or comparable components.

The Figure 1 shows a plan view of two bridge support devices 110 and 120 which can be moved along a demolition direction A on two construction aids in the form of scaffolding 201 and 202. The two frames 201 and 202 are spatially arranged below a bridge segment 300, which is supported by the two bridge support devices 110 and 120 or at least one of these, before it is torn down at a later point in time. The break-off edge at which the bridge has already been dismantled or torn down is identified by the reference numeral 310. The structure axis of the bridge segment 300 is marked with the reference symbol B and the distance between the two bridge support devices 110 and 120 with the reference symbol D.

The ones in the Figure 1 Left bridge support device 110 is formed by two support modules 111 and 112, which are connected to one another by means of a bolt connection 2. The ones in the Figure 1 Right bridge support device 120 is formed by two support modules 121 and 122, which are also connected to one another by a bolt connection 2.

The four support modules 111, 112, 121 and 122 are preferably structurally identical or preferably differ from one another only with regard to their interface configuration for producing the bolt connection 2.

This is explained below in the Figure 1 with the reference number 122 designated support module explained in more detail; however, the statements in connection with the support module 122 apply accordingly to the other support modules 111, 112 and 121.

The support module 122 comprises a chassis 11 and four wheels 10, which are preferably each drivable with their own drive and each via one in the Figure 1 For reasons of clarity, the height adjustment device, not shown in detail, is adjustable in height.

The support module 122 also has a cross member 1 which, with its carrier end 1 a remote from the chassis 11, is connected to a carrier end of the cross member 1 in FIG Figure 1 upper support module 121, namely via the bolt connection 2 already mentioned.

In order to enable the cross member 1 of the support module 122 to rotate relative to the chassis 11, the support module 122 has a bogie 8. The cross member 1 rests on this bogie 8 and can be rotated on the bogie 8 by means of a rotary cylinder 9. The distance between the centers of the bogies 8 of the two support modules 121 and 122 is in the Figure 1 marked with the reference symbol S.

The support module 122 is also equipped with a hydraulic transverse displacement cylinder 7, which forms a transverse displacement device for moving the transverse beam 1 along the longitudinal direction of the transverse beam and thus relative to the chassis 11 and relative to the bogie 8.

The support module 122 is also equipped with counterweights 5, which counterbalance the weight of the cross member 1.

To support the bridge segment 300 on the cross member 1, the latter is preferably connected to an elastic support 3, which supports the bridge segment 300 elastically.

The Figure 2 FIG. 12 shows the support module 122 according to FIG Figure 1 in more detail, namely in a three-dimensional representation diagonally from above. It can be seen that the wheels 10 are each equipped with a height adjustment device 10a, which can be formed, for example, by a height-adjustable cylinder or at least include one.

In addition, the representation according to Figure 2 Recognize a support section 4 of the cross member 1, with which the cross member 1 rests on a lifting device 6 of the support module 122. The lifting device 6 can for example be formed by a hydraulic cylinder with which the support section 4 and thus the cross member 1 as a whole relative to the chassis 11 and thus relative to the frame 202 according to FIG Figure 1 can be raised in the direction of the bridge segment 300 above it.

The Figure 3 shows the support section 4 of the cross member 1 and the lifting device 6 in more detail. It can be seen, inter alia, that the height of the support section 4 relative to the rest of the cross member 1 and its position in the longitudinal direction of the cross member can be adjusted by means of indicated screw connections 4a; this makes it possible to optimally adjust the position of the central support point formed by the support section 4 depending on the design of the bridge or of the respective bridge segment 300.

The Figure 4 shows one of the wheels 10 of the support module 122 in greater detail. A height adjustment device 10a can be seen with which the wheel 10 can be adjusted in height. A wheel-specific drive 10b is provided to drive the wheel 10. In other words, each of the wheels 10 of the support module 122 can preferably be driven individually and moved individually in height. Alternatively, it is possible to equip only individual wheels of the support module 122 with a drive 10b, for example only one or two of the wheels lying on the inside (i.e. the wheels lying closer to the other support module 121 of the bridge support device 120) or only one or two of the wheels on the outside (i.e. the further away from the other support module 121 of the bridge support device 120) wheels.

The height adjustment devices 10a also make it possible to retract the wheels 10 in such a way that the chassis 11 is directly on the frame 202 according to FIG Figure 1 can support and the wheels 10 are relieved. The wheels 10 can be designed, for example, as solid rollers or solid rollers.

The Figure 5 FIG. 11 shows the support module 122 according to FIG Figures 1 to 4 in a three-dimensional representation diagonally from below. A transverse displacement cylinder 7 can be seen with which the transverse beam 1 can be displaced in the longitudinal direction of the transverse beam relative to the chassis 11 and relative to the bogie 8. In addition, the lateral guides / lift-off safeguards 11a of the chassis 11 can be seen, which ensure lateral guidance and prevent unintentional lifting of the chassis on the scaffolding.

The Figures 6 to 9 show an exemplary embodiment for the bolt connection 2 between the two support modules 121 and 122 of the bridge support device 120 according to FIG Figure 1 in more detail in different states.

In the Figure 6 can be seen a bolt 2a, which is slidably attached to the support module 122 and in the Figure 6 locking position shown engages in a corresponding recess 2c in the support module 121.

For moving or adjusting the bolt 2a, the support module 122 preferably has a hydraulic cylinder 2b with which the bolt 2a can be retracted and extended.

The Figure 7 shows the bolt 2a after it has been raised by means of the hydraulic cylinder 2b in the direction of arrow P and has thus left the recess 2c in the support module 121. The bolt 2a thus no longer establishes a lock.

The Figure 8 shows the two support modules 121 and 122 after their cross members 1 have been moved away from each other by means of the cross shift cylinder 7. The support modules 121 and 122 now have a distance from one another in the longitudinal direction of the cross member.

The Figure 9 shows the two support modules 121 and 122 after their cross members 1 have been rotated away from one another by means of their rotating cylinders 9 and the bogies 8.

In the Figure 9 Furthermore, longitudinal bolts 2d and longitudinally arranged holes 2e can be seen which, when the bolt connection 2 is closed, define a predetermined position of the two cross members of the two support modules 121 and 122 in relation to one another in the plane transverse to the longitudinal direction of the cross member.

If the two support modules 121 and 122 are to be connected to one another again, the working steps according to FIGS Figures 6 to 9 in the opposite direction.

In the variant according to the Figures 6 to 9 the bolts 2a for producing the bolt connection 2 are only provided for the support module 122; the support module 121 only has recesses 2c. Alternatively, it is possible for each of the two support modules 121 and 122 to provide one or more adjustable bolts 2a and one or more recesses 2c that interact with bolts of the other support module; in such a configuration, the support modules 121 and 122 can, for example, be of identical design. The same applies to the support modules 111 and 112 in the bridge support device 110 according to FIG. 1.

In connection with the Figures 10 to 13 is now a side view of a driving of the bridge support devices 110 and 120 on the scaffolding 201 and 202 as part of a demolition process for removing the bridge segment 300 according to FIG Figure 1 explained.

The Figure 10 shows the bridge support device 120 in a support phase in which it supports the overlying bridge segment 300. It can also be seen that the bridge support device 120 directly adjoins the demolition edge 310 produced in a previous demolition step.

In the case of the bridge support device 110, on the other hand, the transverse girders 1 are retracted downwards, so that the bridge support device 110 has no load-bearing or supporting function and thus along the breaking direction A - in Figure 10 so to the left - can be moved.

The Figure 11 shows the bridge support device 110 after it has been moved along the breaking direction A and is now at a greater distance D from the bridge support device 120 than at the point in time according to FIG Figure 10 .

The Figure 12 shows the two bridge support devices 110 and 120 after the cross member of the bridge support device 110 has been extended upwards and this supports the bridge segment 300 above it. The bridge support device 120 is therefore no longer necessary to support the bridge segment 300 above it and can now be moved along the direction of break A after it has been lowered.

The Figure 13 shows the two bridge support devices 110 and 120 after the bridge support device 120 has been moved up to the bridge support device 110. In order to avoid damage in the event of a collision, the Bridge support devices 110 and 120 are preferably provided with buffers 90 on the outside.

When presented according to Figure 13 the bridge support device 120 is extended again and serves to support the bridge segment 300 located above it. The bridge can now be torn off in the overhanging section 301, as a result of which the break-off edge moves to the left; the newly emerging edge is in the Figure 13 identified by the reference numeral 311.

In the meantime, the bridge support device 110 can be retracted and moved further along the direction of break A.

As part of a method for removing the bridge segment 300, the in connection with the Figures 10 to 13 described process steps carried out repeatedly, each with the state according to Figure 13 a partial demolition of the bridge segment 300 is carried out.

In connection with the Figures 10 to 13 The method steps described by way of example are advantageously achieved in that the bridge segment 300 is supported in such a way that there are no unfavorable relative movements of the bridge section 300 to be supported; the bridge segment 300 is always held in its original position by the bridge support devices 110 and 120 or by at least one of these.

The altitude H (see Figure 12 ) of the bridge segment 300 to be supported is preferably measured by means of one or more measuring sensors that are attached to one of the two bridge support devices 110 and 120 or both or which can be external measuring sensors, recorded by measuring technology, preferably measured continuously. Detected deviations from a predetermined nominal height can be compensated in a simple manner by (preferably automated) extending or retracting the hydraulic cylinders 6 and thus by vertically adjusting the central support sections 4.

It is also possible to continuously measure the load on the bridge support devices 110 and 120 and to compensate for any fluctuations or deviations from a predetermined target load by automatically extending or retracting the hydraulic cylinders 6 or the central support sections (support points) 4.

In summary, the bridge segment 300 to be supported is therefore preferably supported by alternating activation / deactivation of one of the two bridge support devices 110 and 120 at different points on the bridge segment 300.

In connection with the Figures 14 to 18 will now be explained by way of example how the bridge support devices 110 and 120 according to FIGS Figures 1 and 10 to 13 can be operated if it is necessary to drive past a bridge pier 400.

The Figure 14 shows the two bridge support devices 110 and 120 before they are driven past the bridge pier 400 in a direction A of demolition. The two bridge support devices 110 and 120 have support modules 111 and 112 or 121 and 122 are still connected to one another by means of the bolt connection 2.

In order to enable pivoting of the support modules, the bolt connections 2 are first released, as exemplified in connection with FIG Figures 6 and 9 was explained. The cross members 1 are then each rotated above the bogie 8 by means of the rotating cylinder 9.

The Figure 15 shows the four support modules 111, 112, 121 and 122 after their cross members 1 have each been rotated through 90 ° along the arrow direction P. It can be seen that the longitudinal direction of the cross members 1 are now aligned parallel to the longitudinal direction of the respective underlying framework 201 and 202.

The Figure 16 shows the passing of the support modules 111, 112, 121 and 122 along the demolition direction A or along the longitudinal direction of the scaffolding 201 and 202. It can be seen that the bridge pier 400 can be passed because the cross members 1 of the support modules from the area of the Bridge piers have been swung out.

The Figure 17 shows the pivoting back of the cross members 1 of the support modules by 90 °; this is symbolized by arrows with the reference character P.

The Figure 18 shows the two bridge support devices 110 and 120 after their support modules have been connected to one another again by means of the bolt connections 2. After the production of the bolt connections 2, the further demolition operation can now be carried out, as in connection with the Figures 10 to 13 has been explained above.

1. a) Das oben beispielhaft beschriebene Brückenunterstützungssystem besteht vorzugsweise aus zwei Brückenstützeinrichtungen, die verschieblich und selbstfahrend auf den Längsträgern eines Traggerüstes oder Vorschubgerüstes angeordnet werden. Die Brückenstützeinrichtungen können unabhängig voneinander auf dem Gerüst verfahren und abwechselnd zur Stützung des Brückenüberbaus aktiviert werden.
2. b) Jede der Brückenstützeinrichtungen ist vorzugsweise mit hydraulisch höhenverstellbaren Rädern 10 ausgestattet, auf denen ein rollender Positionswechsel auf dem Gerüst erfolgen kann. Durch die unabhängige hydraulische Höhenverstellung jedes einzelnen Rades sind folgende Funktionen möglich:
   • aa) Absenken der Brückenstützeinrichtungen auf das Fahrgestell 11 zur Stützung des Überbaus (Räder entlastet, Stützung des Überbaus kann aktiviert werden).
   • bb) Absenken auf das Fahrgestell 11 zur Herstellung des Reibschlusses zwischen Gerüst und Brückenstützeinrichtungen und zum Aktivieren der Überbaustützung.
   • cc) Hydraulische Koppelung und Ausfahren der beiden Höheneinstellzylinder der inneren Räder zur Gewährleistung gleicher Radlasten während des Längsfahrens im Leerzustand. Dabei erfolgt der Antrieb vorzugsweise über einen Elektromotor an jeweils einem der beiden aktiven inneren Räder, die insbesondere als Fahrrollen ausgeführt sein können.
   • dd) Unabhängige Höhensteuerung jedes einzelnen der vier aktiven Hydraulikzylinder einer Gerätehälfte während des Öffnens und Schließens des Bolzenstoßes in Bauwerksachse. Damit ist die Veränderung der Längs- und Querneigung der Brückenstützeinrichtungen im Leerzustand möglich.
   • ee) Längsfahren der Stützmodule im geöffneten Zustand durch Aktivierung aller vier Räder eines jeden Fahrgestells ist möglich.
3. c) Durch kontrolliertes Absenken oder Anheben des zentralen Auflageabschnitts 4 bzw. Auflagerpunktes wird die Stützung des Überbaus aktiviert und deaktiviert. Dazu verfügen die Brückenstützeinrichtungen vorzugsweise über einen hydraulisch höhensteuerbaren zentralen Auflagerpunkt 4 in der Systemachse des Gerüsthauptträgers. Die Hebeeinrichtung 6 (z. B. Hydraulikzylinder) unter dem zentralen Auflagerpunkt 4 wird vorzugsweise zur planmäßigen Stützung des Überbaus ausgefahren und mittels Höhensensoren kontrolliert. Ebenso wird die Belastung der Brückenstützeinrichtungen vorzugsweise durch kontinuierliche Protokollierung des Öldrucks überwacht. Eine elektronische Steuerungseinheit steuert den Pressenweg vorzugsweise derart, dass unabhängig von der Beanspruchung, der Eigenverformung der Brückenstützeinrichtungen selbst und der Verformung des Gerüstes eine kontinuierlich vertikal unbewegliche Lagerung des Überbaus gewährleistet ist.
4. d) Der zentrale Auflagerpunkt 4 ist in Brückenquerrichtung vorzugsweise verstellbar im Querträger 1 montierbar, um die Brückenstützeinrichtungen je nach Brückentyp an unterschiedliche Überbaubreiten und Hauptträgerabstände anpassen zu können.
5. e) Die Überbaulast wird vorzugsweise über zwei elastische Auflagerpunkte 4 (pro Brückenstützeinrichtung) großflächig in den Querträger der Brückenstützeinrichtungen eingeleitet.
6. f) Nach dem Absenken des zentralen Auflagerpunktes 4 (Entlastungszustand) und Umlagerung des Eigengewichtes auf das integrierte Drehgestell 8 kann der Querträger 1 in der Bauwerksachse durch Öffnen der vorzugsweise hydraulisch betriebenen Bolzenverbindung bzw. Bolzenverriegelung 2 geteilt werden.
7. g) Nach dem Öffnen der Bolzenverbindung bzw. Bolzenverriegelung 2 kann der Querträger 1 auf dem Drehgestell 8 mit dem Querverschiebezylinder 7 um vorzugsweise ca. 20cm verschoben werden, um die Querträger zu trennen oder zusammenzufügen.
8. h) Jeder Querträger 1 kann auf dem Drehgestell 8 vorzugsweise um 90° um den zentralen Auflagerpunkt 4 gedreht werden bis dieser parallel zum Hauptträger des Gerüstes ausgerichtet ist. In dieser Stellung können die Brückenstützeinrichtungen am Brückenpfeiler vorbeigefahren werden.
9. i) Sobald die Brückenstützeinrichtung ihre neue Position im nächsten Brückenfeld erreicht hat, kann jeder Querträger 1 wiederum um 90° zurückgedreht werden, bis sich der Bolzenstoß 2 in der Bauwerksachse wieder verbinden lässt. Durch einen kurzen Querverschub in Richtung Bauwerksachse werden die Querträger 1 zusammengeführt und mit der Bolzenverriegelung 2 wird der Stoß in Bauwerksachse wieder biegesteif geschlossen.

Those related to the Figures 1 to 18 The exemplary embodiments described can have some or all of the following features:

1. a) The bridge support system described above by way of example preferably consists of two bridge support devices, which are arranged in a displaceable and self-propelled manner on the longitudinal girders of a supporting frame or feed frame. The bridge support devices can move independently of one another on the scaffolding and can be activated alternately to support the bridge superstructure.
2. b) Each of the bridge support devices is preferably equipped with hydraulically height-adjustable wheels 10 on which a rolling change of position on the scaffolding can take place. The independent hydraulic height adjustment of each individual wheel enables the following functions:
   • aa) Lowering the bridge support devices onto the chassis 11 to support the superstructure (wheels relieved, superstructure support can be activated).
   • bb) lowering on the chassis 11 to produce the frictional connection between the scaffolding and bridge support devices and to activate the superstructure support.
   • cc) Hydraulic coupling and extension of the two height adjustment cylinders of the inner wheels to ensure the same wheel loads during longitudinal travel when empty. The drive takes place preferably via an electric motor on one of the two active inner wheels, which can in particular be designed as castors.
   • dd) Independent height control of each of the four active hydraulic cylinders of one half of the device during the opening and closing of the bolt joint in the building axis. This enables the longitudinal and transverse inclination of the bridge support devices to be changed when empty.
   • ee) Longitudinal travel of the support modules in the open state by activating all four wheels of each chassis is possible.
3. c) The support of the superstructure is activated and deactivated by controlled lowering or raising of the central support section 4 or support point. For this purpose, the bridge support devices preferably have a hydraulically height-controllable central support point 4 in the system axis of the main scaffold girder. The lifting device 6 (e.g. hydraulic cylinder) under the central support point 4 is preferably extended to support the superstructure as planned and is controlled by means of height sensors. Likewise, the load on the bridge support devices is preferably monitored by continuously logging the oil pressure. An electronic control unit controls the press path preferably in such a way that, regardless of the load, the inherent deformation of the bridge support devices themselves and the deformation of the scaffolding, a continuously vertically immovable mounting of the superstructure is guaranteed.
4. d) The central support point 4 is preferably adjustable in the transverse direction of the bridge and can be mounted in the cross member 1 in order to be able to adapt the bridge support devices to different superstructure widths and main girder spacings depending on the type of bridge.
5. e) The superstructure load is preferably introduced over a large area into the cross girder of the bridge support devices via two elastic support points 4 (per bridge support device).
6. f) After lowering the central support point 4 (relief state) and relocating the dead weight to the integrated bogie 8, the cross member 1 can be divided in the structure axis by opening the preferably hydraulically operated bolt connection or bolt lock 2.
7. g) After opening the bolt connection or bolt lock 2, the cross member 1 can be moved on the bogie 8 with the cross slide cylinder 7 by preferably about 20cm in order to separate or join the cross members.
8. h) Each cross member 1 can be rotated on the bogie 8 preferably by 90 ° around the central support point 4 until it is aligned parallel to the main beam of the frame. In this position, the bridge support devices can be driven past the bridge pier.
9. i) As soon as the bridge support device has reached its new position in the next bridge span, each cross member 1 can again be turned back by 90 ° until the bolt joint 2 can be re-connected in the structure axis. The cross members 1 are brought together by a short transverse shift in the direction of the structure axis and the joint in the structure axis is closed again in a rigid manner with the bolt lock 2.

Although the invention has been illustrated and described in more detail by means of preferred exemplary embodiments, the invention is not restricted by the examples disclosed and other variations can be derived therefrom by those skilled in the art without departing from the scope of the invention as defined by the claims.

List of reference symbols

1

Cross member

1a

Beam end

2

Bolt connection

2a

bolt

2 B

Hydraulic cylinder

2c

Recess

2d

Longitudinal bolt

2e

holes arranged lengthways

4th

Support section / support point

4a

Screw connection

5

Counterweights

6th

Lifting device

7th

Cross shift cylinder

8th

bogie

9

Rotating cylinder

10

bikes

10a

Height adjustment device

10b

individual wheel drive

11

chassis

11a

Lateral guidance / lift-off protection

90

buffer

110

Bridge support device

111

Support module

112

Support module

120

Bridge support device

121

Support module

122

Support module

201

framework

202

framework

300

Bridge segment

301

overhanging section

310

Trailing edge

311

new edge

400

Bridge piers

A.

Abort direction

B.

Structure axis

D.

distance

H

Altitude

P

Arrow direction

S.

distance

Claims (8)

1. Bridge supporting device (110, 120) for supporting a bridge segment (300), wherein the bridge supporting device (110, 120) has at least one wheel (10) which allows the bridge supporting device (110, 120) to move on a provisional structure, in particular a supporting or advancing scaffold, arranged below the bridge segment (300),
   characterized in that
   the wheels (10) are height-adjustable and can be extended into a movement position in which the wheels (10) raise one or more chassis (11) of the bridge supporting device (110, 120) and allow a movement on the provisional structure, and moreover can be retracted into a supporting position in which one or more chassis (11) of the bridge supporting device (110, 120) are supported on the provisional structure and the wheels (10) are completely or - compared with the movement position - at least partially relieved of load,
   the bridge supporting device (110, 120) comprises two supporting modules (111, 112, 121, 122) which can be connected to one another and separated from one another and which each comprise a chassis (11) and one or more wheels (10) and can be moved individually on the provisional structure in the separated state,
   each of the supporting modules (111, 112, 121, 122) has a respective crossmember (1) which can be connected by its crossmember end remote from the chassis (11) to a crossmember end of the crossmember (1) of the respective other of the two supporting modules (111, 112, 121, 122), in particular by means of a bolt connection (2), and
   each of the two supporting modules (111, 112, 121, 122) has a respective rotary frame (8) which allows at least one component of the respective supporting module (111, 112, 121, 122), in particular a crossmember (1) of the respective supporting module (111, 112, 121, 122), to be rotated relative to the chassis (11).
2. Bridge supporting device (110, 120) according to Claim 1,
   characterized in that
   each of the supporting modules (111, 112, 121, 122) has a respective transverse displacement device, in particular in the form of a hydraulic transverse displacement cylinder (7), which allows the crossmember (1) to be displaced relative to the chassis (11) and/or rotary frame (8) in the crossmember longitudinal direction.
3. Bridge supporting device (110, 120) according to either of the preceding claims,
   characterized in that
   each of the supporting modules (111, 112, 121, 122) has a respective lifting device (6), in particular a lifting device (6) comprising a hydraulic cylinder, which allows the crossmember (1) to be raised in the direction of a bridge segment (300) situated above for the purpose of supporting the bridge segment (300) by means of the crossmember (1), and moreover allows the crossmember (1) to be lowered for the purpose of spatially separating the crossmember (1) from the bridge segment (300).
4. Bridge supporting device (110, 120) according to one of the preceding claims,
   characterized in that

   - a bearing portion (4) of the crossmember (1) is supported on the lifting device (6) and is raised or lowered thereby,

   - wherein the position of the bearing portion (4) is adjustable relative to at least one other portion, in particular a portion of the crossmember (1) that is provided for supporting a bridge segment (300).
5. Method for operating a bridge supporting device (110, 120),
   characterized in that,
   in the context of the method, the bridge supporting device (110, 120) is used in supporting phases for supporting a bridge segment (300) and is moved in movement phases in the bridge longitudinal direction on a provisional structure, in particular a supporting or advancing scaffold, arranged below the bridge segment (300), wherein

   - the bridge supporting device (110, 120) comprises two supporting modules (111, 112, 121, 122) which can be connected to one another and separated from one another and which each comprise a chassis (11) and one or more wheels (10) and can be moved individually on the provisional structure in the separated state,

   - each of the supporting modules (111, 112, 121, 122) has a respective height-adjustable crossmember (1) which can be connected by its crossmember end remote from the chassis (11) to a crossmember end of the crossmember (1) of the respective other of the two supporting modules (111, 112, 121, 122), in particular by means of a bolt connection (2),

   - each of the two supporting modules (111, 112, 121, 122) has a respective rotary frame (8) which allows the crossmember (1) of the respective supporting module (111, 112, 121, 122) to be rotated relative to its chassis (11),

   - wherein, at least in those movement phases in which a bridge pier (400) is passed,

   - at first the connection between the crossmember ends of the crossmembers (1) of the two supporting modules (111, 112, 121, 122) is released,

   - the crossmembers (1) are rotated on their or by means of their rotary frame (8) in each case by 90 degrees or at least by an angle which allows the respective crossmember (1) to pass the bridge pier (400),

   - the supporting modules (111, 112, 121, 122) are each moved past the bridge pier in the bridge longitudinal direction,

   - after moving past the bridge pier, the crossmembers (1) are each rotated back on their or by means of their rotary frame (8) until the crossmember ends of the crossmembers (1) are situated opposite one another, and

   - the crossmember ends of the crossmembers (1) of the two supporting modules (111, 112, 121, 122) are then connected to one another again.
6. Method according to Claim 5,
   characterized in that

   - before the start of each movement phase, at least one or more height-adjustable wheels (10) of the bridge supporting device (110, 120) are extended into a movement position in which the wheels (10) raise one or more chassis (11) of the bridge supporting device (110, 120) and allow the bridge supporting device (110, 120) to move on the provisional structure, and

   - before the start of each supporting phase, the height-adjustable wheels (10) are retracted into a supporting position in which one or more chassis (11) of the bridge supporting device (110, 120) are supported on the provisional structure and the wheels (10) are completely or - compared with the movement position - at least partially relieved of load.
7. Method according to either of the preceding Claims 5 and 6,
   characterized in that

   - each of the supporting modules (111, 112, 121, 122) has a respective transverse displacement device, in particular in the form of a hydraulic transverse displacement cylinder (7),

   - after the connection between the crossmembers (1) has been released and before the crossmembers (1) are rotated, the crossmember ends of the two crossmembers (1) are each moved away from one another by means of their transverse displacement device, specifically in each case along the respective crossmember longitudinal direction, and a gap is formed between the crossmember ends, and

   - after the bridge pier (400) has been passed and after the crossmembers (1) have been rotated back, the crossmember ends are moved towards one another, in each case along the crossmember longitudinal direction, and

   - the crossmember ends are then connected.
8. Method according to one of the preceding Claims 5 to 7,
   characterized in that

   - a bridge segment (300) is supported in such a way that no unfavourable relative movements of the bridge portion to be supported occur, and/or

   - the bridge portion is held in its original position by the bridge supporting device (110, 120) and/or

   - the height position (H) of the bridge segment (300) to be supported is continuously detected by measurement and determined deviations are compensated for by preferably automated extension or retraction of the lifting device (6) and of the bearing portion (4) or of the central bearing point, and/or

   - the loading of the bridge supporting device (110, 120) is continuously detected by measurement and determined deviations are compensated for by automated extension or retraction of the lifting device (6) and the bearing portion (4), and/or

   - the bearing of the bridge segment (300) to be supported occurs by alternate activation/deactivation of one of the two bridge supporting devices (110, 120) at different points of the bridge segment (300).

Images