EP3782949A1 - Structure de levage et procédé de levage d'un pont - Google Patents

Structure de levage et procédé de levage d'un pont Download PDF

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Publication number
EP3782949A1
EP3782949A1 EP19192948.8A EP19192948A EP3782949A1 EP 3782949 A1 EP3782949 A1 EP 3782949A1 EP 19192948 A EP19192948 A EP 19192948A EP 3782949 A1 EP3782949 A1 EP 3782949A1
Authority
EP
European Patent Office
Prior art keywords
lifting
bridge
hanger
rod
bracket
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.)
Granted
Application number
EP19192948.8A
Other languages
German (de)
English (en)
Other versions
EP3782949B1 (fr
Inventor
Michael MACHEINER
Wolfgang Göbel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ing Hans Bodner Bau GmbH and Co KG
Original Assignee
Ing Hans Bodner Bau GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to PT191929488T priority Critical patent/PT3782949T/pt
Application filed by Ing Hans Bodner Bau GmbH and Co KG filed Critical Ing Hans Bodner Bau GmbH and Co KG
Priority to EP19192948.8A priority patent/EP3782949B1/fr
Priority to HUE19192948A priority patent/HUE059807T2/hu
Priority to ES19192948T priority patent/ES2926315T3/es
Priority to HRP20221115TT priority patent/HRP20221115T1/hr
Priority to PL19192948.8T priority patent/PL3782949T3/pl
Priority to SI201930316T priority patent/SI3782949T1/sl
Priority to PCT/EP2020/073351 priority patent/WO2021032845A1/fr
Publication of EP3782949A1 publication Critical patent/EP3782949A1/fr
Application granted granted Critical
Publication of EP3782949B1 publication Critical patent/EP3782949B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
    • B66C1/16—Slings with load-engaging platforms or frameworks

Definitions

  • the invention relates to a method for the excavation of a truss bridge with the aid of a lifting structure with a hanger that can be suspended from a crane, the suspension point of the hanger being located above the center of the truss bridge, the truss bridge having two parallel upper main girders and two parallel lower main girders arranged underneath, wherein crossbars connect the two lower main girders and crossbars connect the two upper main girders, and wherein the upper and lower main girders are connected to one another by a framework, the lifting structure comprising four rod structures.
  • the invention also relates to a lifting structure for excavating a truss bridge, in particular a riveted truss bridge, with the aid of a crane, comprising a hanger and at least four bar structures, the bar structures together with the hanger forming the shell of a pyramid.
  • truss bridges in which two parallel upper main girders and two parallel lower ones arranged below Main girders are provided, with cross bars connecting the two lower main girders and cross bars connecting the two upper main girders, the upper and lower main girders being connected to one another by a framework.
  • Such truss bridges are excavated according to the state of the art using a suspension that is fixed to the bridge and can be hung on the crane.
  • This hanger is mounted from the top of the bridge and includes steel beams that are mounted on the top main beams. So that the entire bridge can be excavated, these steel structures have to be attached to the bridge at several lifting points.
  • the steel structures are welded to the bridge in such a way that dismantling is impossible after the bridge has been lifted. Therefore the steel girders cannot be reused and must be recycled together with the excavated bridge.
  • the invention is based on the object of providing a method and a lifting structure for the excavation of bridges, in particular truss bridges, in which the above-mentioned problems, among other things with regard to the efficient and rapid attachment of the lifting structure to the bridge, do not occur.
  • the lifting structure is therefore mounted at lifting points on the underside of the truss bridge. More precisely, only the lower brackets are fixed to the lifting points, for whose assembly, in contrast to the steel structures according to the prior art, no large crane is required to lift the brackets in. In the case of railway bridges, the installation of the lower brackets does not even affect rail operations, since the lower brackets can be installed at tension-free intervals and do not disrupt train traffic over the bridge even after they have been installed.
  • the introduction of the force on the underside of the bridge structure is made possible by the special inclination of the lifting structure, which with the hanger takes the form of a pyramid. Due to the resulting alignment of the bar structures, they can be located within the bridge. The inclination of the bar structures is adapted to the riveted truss of the bridge so that they can be threaded into the truss bridge, so to speak.
  • Such a method also allows the height of the suspension point of the hanger to be reduced, since the lifting points are located on the underside of the bridge. This means that a smaller crane can ultimately be chosen to lift the bridge.
  • the inclination of the hanger is large when the lifting structure is attached to the top of the bridge, the inclination can be selected to be as small as possible, whereby the power transmission to the ropes of the hanger is smaller.
  • the rods have shackles and before lifting the upper brackets together with rods with shackles are mounted on eye rods of the upper brackets and then the rods are fixed to lateral brackets on the upper brackets.
  • the lower bracket has a cylinder section that is connected to the connecting plate, so that the angle between the cylinder axis and the longitudinal axis of the bridge is 60 ° to 85 °, preferably 60 ° to 65 ° and the angle between the cylinder axis and the transverse axis of the Bridge is 65 ° to 85 °, preferably 75 ° to 85 °.
  • the truss bridge is preferably a riveted truss bridge.
  • the four rods in extension with the hanger thus form the side edges of the pyramid formed by the lifting structure. As described above, the inclination of these side edges is chosen so that the rods fit through the framework of the bridge.
  • the lower bracket comprises a connecting plate for connection to a lower girder of the truss bridge, a hollow cylinder section and a support plate, the connecting plate being connected to the cylinder section and the rod protruding through the cylinder section to the support plate.
  • a compensating plate is provided on the side of the connecting plate facing away from the cylinder section, which is located on the lower girder of the truss bridge on the lifting surface. This is used to compensate for unevenness in rivets on the lifting surface.
  • the compensation plates are preferably at least 20 mm thick. This thickness is advantageous because the compensation plate must cover the protruding rivet heads on the lower flange of the bridge. Because of these rivet heads, the connection plate cannot be connected directly to the lower flange on riveted truss bridges.
  • the lifting construction is preferably characterized in that the cylinder section each has a circular base and an elliptical top surface, the angle of inclination of the top surface relative to the base being preferably 25 to 35 °.
  • the cylinder section is accordingly a straight circular cylinder cut off at an angle.
  • the elliptical top surface of the cylinder section is connected to the connecting plate.
  • the long height of the cylinder section can preferably be 25 to 35 cm and the short height of the cylinder section can preferably be 10 to 15 cm.
  • the weight of the cylinder portion is preferably 35 to 55 kg. These dimensions have to be adjusted depending on the size and weight of the bridge to be lifted.
  • the lower bracket for attaching the rod preferably comprises an anchor plate and a spherical collar nut, the anchor plate being fixable on the support plate below the cylinder section, the anchor plate being fixed to the support plate by means of at least two protruding lugs their position can be secured.
  • all components of the lower bracket more precisely the compensating plate, the connecting plate, the cylinder section, the support plate and the anchor plate, include a recess in the middle for the threaded rod to pass through. This is, after it has been passed through the components of the lower bracket, secured and fixed by means of the spherical collar nut.
  • the rod and the hanger suspended from the upper bracket each form an extension of the cylinder axis of the cylinder section, the cylinder axes each defining the side edges of the pyramid formed by the lifting structure, the angle between the cylinder axis and the longitudinal axis of the bridge is preferably 60 to 85 °. Accordingly, the threaded rod, as an extension of the cylinder section, is inclined in the direction of the cylinder axis by the same angle with respect to the longitudinal axis of the bridge. This angle can be changed or adjusted via the inclination angle of the cylinder section.
  • the threaded rod is inclined not only with respect to the longitudinal axis, but also with respect to the transverse axis of the bridge.
  • the cylinder section is preferably connected to the connecting plate in such a way that the angle between the cylinder axis and the transverse axis of the bridge is greater than 60 °, preferably 75 to 85 °.
  • the upper bracket can be designed in the form of an eye rod construction, the upper bracket preferably having at least three welded plates with holes on the top for attaching the shackle as well as lateral tabs, the tabs being fixable on the plates with screws, the plates are preferably 30 to 50 mm thick.
  • the upper holder for fastening the threaded rod preferably comprises an anchor plate and a spherical collar nut, the threaded rod being slidable through a recess in the at least three welded plates in the upper holder and attachable to the plates, the anchor plate by means of protruding lugs can be secured in its position on the side tabs.
  • the lower holder comprises a compensating plate, a connecting plate, a cylinder section and a support plate.
  • the connecting plate can be attached to the lower flange of the bridge by previously removing the Compensating plate was attached between the connecting plate and the lower flange of the bridge. Furthermore, the connection plate is connected to the cylinder section.
  • a truss bridge 2 comprises two parallel upper main girders 32, 32 'and two parallel lower main girders 31, 31' arranged underneath.
  • the two lower and the two upper main girders are each connected by means of crossbars.
  • the upper and lower main girders are connected to a framework 34.
  • the lifting structure 1 shown comprises a suspension element 3, the suspension point 1 'of which is located above the center of the truss bridge 2.
  • a crane can be attached to this suspension point 1 'and lift the bridge 2 with the aid of the lifting structure 1.
  • the lifting structure 1 comprises four bar structures 4, which in the Figures 3 and 4 is described in more detail and go through the truss bridge 2.
  • Each of these rod support structures 4 is made up of a lower holder 5, an upper holder 6 and a connection 4 ′ between the holders 5, 6 composed.
  • the lower brackets 5 are mounted on the underside of the lower main girders 31, 31 ′ of the truss bridge 2.
  • the lower brackets 5 are attached to four lifting surfaces 35.
  • Two lifting surfaces 35 are located at a distance from one another on the underside of one of the parallel lower main beams 31.
  • the remaining two lifting surfaces 35 are located at a distance from one another on the lower side of the other of the parallel main beams 31 '.
  • the lifting surfaces 35 preferably each have a uniform distance from the center of the bridge. As a result, the lifting surfaces 35 form a rectangle on the underside of the bridge.
  • 35 holes are made in the lifting surfaces.
  • a rod 4 ′ which connects the upper with the lower holder 6, 5, can be pushed through these bores.
  • the hanger 3 is attached to the upper brackets 6.
  • the ropes of the hanger 3 form as in Fig. 1 shown with the extension of the rods 4 'from the lifting surface 35 in the direction of the suspension point 1' approximately a straight rectangular pyramid.
  • the suspension point 1 ' corresponds to the tip of the pyramid and the lifting surfaces 35 form the corner points of the pyramid base.
  • the four bar structures 4 together with the hanger 3 thus form the shell of a straight pyramid.
  • the same lifting construction 1 can be used for lifting the new bridge 2 in. Due to the low-lying suspension point 1 ', a smaller crane can be used for lifting (and raising). This is a great advantage, especially on difficult-to-access railway bridges with possibly overhead lines. In addition, this also reduces the force transmission to the ropes of the hanger 3.
  • a rod structure 4 of the lifting structure 1 according to the invention is shown.
  • the rod support structure 4 comprises a lower bracket 5, an upper bracket 6 and a rod 4 'connecting the upper and lower brackets 6, 5.
  • the upper bracket also has a shackle 13.
  • the hanger 3 can be attached to this.
  • the rod 4 ′ is fixed to the lower and to the upper holder 5, 6.
  • the lower bracket 5 is as in FIG Fig. 3 visible on the lifting surface on the underside of one of the lower main girders of the truss bridge 2
  • the lower bracket 5 is as in FIG Fig. 3 can be seen designed so that the angle ⁇ between the bar structure 4 and the longitudinal axis of the bridge 2 is between 60 and 85 °.
  • the angle ⁇ is preferably approximately 60 °, since the suspension point 1 'is thereby kept as low as possible and the transmission of forces to the lifting structure 1 is optimal.
  • the lower bracket 5 comprises a connection plate 8 for connection to a lower girder of the truss bridge 2, a hollow cylinder section 7 and a support plate 10.
  • the connection plate 8 is connected to the cylinder section 7.
  • the connecting plate 8 is preferably welded to the cylinder section 7.
  • the connecting rod 4 ′ protrudes through the connecting plate 8 and the cylinder section 7 into the support plate 10 of the lower bracket 5.
  • the compensating plate 9 shown may be provided on the side of the connecting plate 8 facing away from the cylinder section 7.
  • the compensation plate 9 can be attached to a lifting surface 35 on the lower main beam 31, 31 'of the bridge 2 and serves to compensate for elevations such as rivets present on the lifting surface 35.
  • the compensation plate 9 is at least 20 mm thick in order to actually compensate for the elevations.
  • the cylinder section 7 has as in Fig. 4 shown a circular base and an elliptical top surface.
  • the angle of inclination of the top surface with respect to the base surface is preferably 25 to 35 °.
  • This angle of inclination of the cylinder section 7 allows the bar support structures 4 to be inclined with respect to the longitudinal and transverse axes of the truss bridge 2. More precisely, the inclination of the cylinder axis of the cylinder section 7 corresponds to the inclination of the Bar structures 4 with respect to the truss bridge 2.
  • the rod 4 'and the hanger suspended from the upper bracket 6 each form an extension of the cylinder axis.
  • the cylinder axes thus define the side edges of the rectangular straight pyramid formed by the lifting structure 1.
  • the angle ⁇ between the side edge and the longitudinal axis of the bridge 2 is preferably between 60 and 85 °.
  • the angle ⁇ between the side edge and the transverse axis of the bridge 2 is shown.
  • the angle ⁇ is greater than 60 ° and is preferably between 75 and 85 °.
  • This angle ⁇ corresponds in turn to the angle between the cylinder axis and in this case the transverse axis of the bridge 2. That is, the angle ⁇ is fixed on the basis of the position of the cylinder section 7 to the connecting plate 8, which must be selected before they are connected.
  • the inclination of the bar structures 4 can be selected.
  • the inclination is chosen so that the bar structures 4 fit through the framework of the bridge 2 and, on the other hand, the suspension point 1 'is optimally chosen.
  • the angles ⁇ and ⁇ can be adapted particularly easily to the given conditions.
  • this has an in Fig. 4
  • the anchor plate 11 shown and a spherical collar nut 12.
  • the anchor plate 11 can be fixed to the support plate 10 below the cylinder section 7.
  • the support plate 10 has at least two protruding lugs. These lugs enclose the anchor plate 11 and prevent the same from slipping.
  • the upper holder 6 is shown in the form of an eye rod construction.
  • This construction preferably comprises at least three connected plates 14 with bores on the top for fastening the shackle 13 as well as lateral tabs 15.
  • the tabs 15 can be fixed to the plates 14 with screws 17.
  • the thickness of the plates 14 depends on the dimensions of the shackle 13, but is preferably 30 to 50 mm.
  • the plates 14 are preferably welded together.
  • this includes, similar to the lower bracket 5, an anchor plate 11 and a spherical collar nut 12.
  • a recess in the connected plates 14 allows the rod 4' to be pushed through and the anchor plate 11 and the spherical collar nut to be inserted 12.
  • the anchor plate 11 then rests on the side tabs 15.
  • the tabs 15 each have a protruding nose which in turn secure the anchor plate 11 in its position.
  • the height of the suspension point 1 ' can be adapted to the crane with the lifting structure 1 according to the invention.
  • the angles ⁇ and ⁇ between the side edges of the pyramid and the longitudinal or transverse axis of the bridge 2 have to be changed.
  • these can be adapted by changing the angle of inclination of the cylinder section 7 or by changing the attachment of the cylinder section 7 to the connecting plate 8.
  • the upper and lower brackets 6, 5 shown are their low weight in comparison with known steel girders which are used for excavating truss bridges.
  • the plates can be assembled individually, these individual parts weighing less than 130 kg and therefore no special crane is required for their assembly.
  • the use of the bar structures 4 to excavate a truss bridge 2 also results in economic advantages due to the low material costs of the components and the effective attachment to the bridge in a short time.
  • the bar structures 4 can also be easily dismantled from the excavated bridge and reused.
  • the same upper brackets 6 including rods 4 ' can be used for all bridges, since these can be connected to the lower brackets 5 and detached again very quickly and easily.
  • the same rod structures 4 can also be used for lifting in a new bridge.
EP19192948.8A 2019-08-21 2019-08-21 Structure de levage et procédé de levage d'un pont Active EP3782949B1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP19192948.8A EP3782949B1 (fr) 2019-08-21 2019-08-21 Structure de levage et procédé de levage d'un pont
HUE19192948A HUE059807T2 (hu) 2019-08-21 2019-08-21 Emelõszerkezet és eljárás híd kiemelésére
ES19192948T ES2926315T3 (es) 2019-08-21 2019-08-21 Construcción de elevación y procedimiento para la elevación de un puente
HRP20221115TT HRP20221115T1 (hr) 2019-08-21 2019-08-21 Podizna konstrukcija i postupak podizanja mosta
PT191929488T PT3782949T (pt) 2019-08-21 2019-08-21 Estrutura de elevação e procedimento para retirar dos apoios uma ponte
SI201930316T SI3782949T1 (sl) 2019-08-21 2019-08-21 Dvižna konstrukcija in postopek za dvigovanje mostu
PL19192948.8T PL3782949T3 (pl) 2019-08-21 2019-08-21 Konstrukcja podnosząca i sposób podnoszenia mostu
PCT/EP2020/073351 WO2021032845A1 (fr) 2019-08-21 2020-08-20 Structure de soulèvement et procédé de levage d'une armature

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19192948.8A EP3782949B1 (fr) 2019-08-21 2019-08-21 Structure de levage et procédé de levage d'un pont

Publications (2)

Publication Number Publication Date
EP3782949A1 true EP3782949A1 (fr) 2021-02-24
EP3782949B1 EP3782949B1 (fr) 2022-07-20

Family

ID=67704489

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19192948.8A Active EP3782949B1 (fr) 2019-08-21 2019-08-21 Structure de levage et procédé de levage d'un pont

Country Status (8)

Country Link
EP (1) EP3782949B1 (fr)
ES (1) ES2926315T3 (fr)
HR (1) HRP20221115T1 (fr)
HU (1) HUE059807T2 (fr)
PL (1) PL3782949T3 (fr)
PT (1) PT3782949T (fr)
SI (1) SI3782949T1 (fr)
WO (1) WO2021032845A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060032850A1 (en) * 2004-08-12 2006-02-16 Theriot Ronald J Adjustable basket for storing and transporting cargo
EP2832988A1 (fr) * 2013-07-29 2015-02-04 General Electric Company Procédé et appareil pour manipuler une pale de rotor
CN109775551A (zh) * 2019-03-21 2019-05-21 广东省水利水电第三工程局有限公司 一种用于贝雷桥整体运输的吊装系统及其施工方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060032850A1 (en) * 2004-08-12 2006-02-16 Theriot Ronald J Adjustable basket for storing and transporting cargo
EP2832988A1 (fr) * 2013-07-29 2015-02-04 General Electric Company Procédé et appareil pour manipuler une pale de rotor
CN109775551A (zh) * 2019-03-21 2019-05-21 广东省水利水电第三工程局有限公司 一种用于贝雷桥整体运输的吊装系统及其施工方法

Also Published As

Publication number Publication date
ES2926315T3 (es) 2022-10-25
EP3782949B1 (fr) 2022-07-20
PL3782949T3 (pl) 2022-11-21
HUE059807T2 (hu) 2022-12-28
SI3782949T1 (sl) 2022-11-30
PT3782949T (pt) 2022-09-14
WO2021032845A1 (fr) 2021-02-25
HRP20221115T1 (hr) 2022-11-25

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