EP0594151A1 - Method and device for erecting long spanning girders, particularly on viaducts - Google Patents

Method and device for erecting long spanning girders, particularly on viaducts Download PDF

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Publication number
EP0594151A1
EP0594151A1 EP93116976A EP93116976A EP0594151A1 EP 0594151 A1 EP0594151 A1 EP 0594151A1 EP 93116976 A EP93116976 A EP 93116976A EP 93116976 A EP93116976 A EP 93116976A EP 0594151 A1 EP0594151 A1 EP 0594151A1
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EP
European Patent Office
Prior art keywords
girder
runway
fact
equipment according
pier
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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.)
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Application number
EP93116976A
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German (de)
French (fr)
Inventor
Giorgio Zuccolo Arrigoni
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Individual
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Individual
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Publication of EP0594151A1 publication Critical patent/EP0594151A1/en
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges
    • E01D21/06Methods or apparatus specially adapted for erecting or assembling bridges by translational movement of the bridge or bridge sections

Definitions

  • the present invention relates to a device for the erection of prefabricated girders,particularly on viaducts.
  • the aim of the present invention is to avoid the shortcomings of the methods and devices of the known tecniques, carring out a device that enables the erection of long girders rapidly and economically.
  • a lifting device is employed for the erection of long girders, characterized by the fact of including:
  • Fig 1 shows in a lateral view a preferred embodiment of the invention in the starting phase of the girder lifting.
  • Figs. 2,3 and 4 show it in a front,rear,top view respectively.
  • Fig. 5 shows it in a lateral view alter having finished the lifting phase.
  • Fig. 6 shows it in a top view.
  • Fig. 7 shows it in a rear view during the translation of the girder.
  • Fig. 8 shows it in a top view.
  • Fig. 9 shows it in a lateral view at the end of the positioning of the girder
  • Fig. 10 shows it in a top view.
  • Fig. 11 shows it during the displacement of the front runway beam to start a subsequent phase of the cycle.
  • Fig. 12 shows the detail of the small movable gantry crane resting on the front runway beam during the lifting phase of the girder.
  • Fig. 13 shows it in a subsequent phase to allow the translation of the girder.
  • Fig. 14 shows the detail of the small movable gantry crane resting on the rear runway beam.
  • a preferred lifting device to be employed in the inventive method comprises at least one front runway beam 1 placed on the top of the front pier 3 and one rear runway beam 2 put on the front extremity of the girder already placed 4,resting on the rear pier 3'.
  • front and rear are referred to the direction of advancement in the erection phases.
  • Both runway beams 1 and 2 are made of steel; they are composed of a central part 5 on the pier 3 supporting the girder 4 and two overhanging parts 6,7; the top surface of the runway beams is partially covered by stainless steel in proximity to the track rails (not rapresented in the drawings) for the sliding of the travelling crane 12,12'.
  • the front beam 1 has a slighter structure than the rear beam 2 and it is provided with a "seat" 8 for the passage of the cantilever 13, and in this seat there is a moveable drawer 9.
  • the rear beam 2 has a substantially square transversal cross section in order to support the torsional moments due to the cantilevered lifting in rispect to its own longitudinal axis.
  • Each runaway beam 1,2 is provided with anchoring falls 10 that link the overhanging part 7 to the ballast 11;it is also possible to link the anchoring falls 10 to some bars embedded in the pier base.
  • the invention provides also that the travelling cranes 12 and 12',sliding on the top face of the beam 1 and 2, have a teflon slide at their bottom surface; the rear travelling crane 12' is provided with a guide roller 16 against the runway beam 2 in order to avoid its overturning;these travelling cranes 12,12' are equipped with lifting devices consisting of rope winches or hydraulic jacks that carry out the lifting of the girder.
  • the erection of the girder takes place in this way: the travelling cranes 12,12' are displaced,by a rack and pinion device,at the extremity of the runway beams in the opposite position of the anchoring falls to the ballast.
  • the travelling crane 12 rests upon the seat 8.
  • the girder 4' to be lifted is transported by a barge 12 just besides the bases of the piers 3,3'.
  • This girder is provided of cantilevers,one in the front extremity 13 and two 14,not aligned with the front one,in the rear extremity of the girder;in this way the lifting is carried out in an isostatic way and it is always possible to foresee the real forces in each lifting device.
  • the invention provides also a stabilizing arm 17 that prevent the overturning of the front runaway beam due to wind forces, out of plumb,possible eccentricities,ecc.
  • the present invention as can be easily understood, has a lot of advantages,and in particular:

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

Abstract

The method for the erection of a long girder comprises the steps of
  • placing a front runway beam (1) on the top of the front pier (3);
  • placing a rear runway beam (2) on the front extremity of the girder (4) previously erected;
  • lifting the girder (4') by means of lifting devices fixed to cantilevers (13, 14) provided at the extremities of the girder (4') to be lifted;
  • translating the girder (4') horizontally and transversely to the longitudinal direction of the girder into a position above the piers (3, 3').

Description

  • The present invention relates to a device for the erection of prefabricated girders,particularly on viaducts.
  • Methods and devices for the erection of girders are known.
  • These methods however proved not to be not properly workable for the erection of long girders,spanning over 150 m.
  • In fact the well-known solution of using launching trusses,very effective with smaller girders,is pratically not usable since devices long twice the girder to be launched have to be adopted. On the other and, launching trusses can't be used where the viaduct layout has small radius curvatury.
  • The effectiveness of another erection procedure,named self-launching method,is strongly reduced on the sea viaducts,because auxiliary piers cannot be made;the very high forces that arise require suitable strenghtening or temporary steel stays.
  • Another method in which sections are built in situ has the drawback to be very time consuming because,since there are a lot of segments,several weldings have to be performed;each welding requiring many working days to be carried out.
  • Another method that requires the use of floating cranes has the shortcoming to be very expensive,if compared to the present invention.
  • The aim of the present invention is to avoid the shortcomings of the methods and devices of the known tecniques, carring out a device that enables the erection of long girders rapidly and economically.
  • In accordance with the present invention, this object is solved in that a lifting device is employed for the erection of long girders, characterized by the fact of including:
    • a front runway beam placed on the top of the front pier,
    • a rear runway beam placed on the front extremity of the girder already placed,
    • lifting devices hoisting the girder by cantilevers fixed at its extremities,
    • means for the horizontal translation of the girder,
    • means of anchoring the runway beams to the pier's top,
    • means of restraining the runway beams against the forces parallel to the girder axis
    each runway beam being provided with a small moveable gantry crane,running over the runway beam,carring the lifting devices of the girder; the front runway beam is provided with a "seat" for the passage of cantilever,and in this seat there is a movable drawer in order to allow the subsequent sliding of the small travelling crane.
  • Further aspects of the present invention, as well as their various benefits, will become more clear from the subsequent description which refers to the drawing illustrating a preferred embodiment of the invention.
  • Fig 1 shows in a lateral view a preferred embodiment of the invention in the starting phase of the girder lifting.
  • Figs. 2,3 and 4 show it in a front,rear,top view respectively.
  • Fig. 5 shows it in a lateral view alter having finished the lifting phase.
  • Fig. 6 shows it in a top view.
  • Fig. 7 shows it in a rear view during the translation of the girder.
  • Fig. 8 shows it in a top view.
  • Fig. 9 shows it in a lateral view at the end of the positioning of the girder
  • Fig. 10 shows it in a top view.
  • Fig. 11 shows it during the displacement of the front runway beam to start a subsequent phase of the cycle.
  • Fig. 12 shows the detail of the small movable gantry crane resting on the front runway beam during the lifting phase of the girder.
  • Fig. 13 shows it in a subsequent phase to allow the translation of the girder.
  • Fig. 14 shows the detail of the small movable gantry crane resting on the rear runway beam.
  • As can be seen in the drawings, a preferred lifting device to be employed in the inventive method comprises at least one front runway beam 1 placed on the top of the front pier 3 and one rear runway beam 2 put on the front extremity of the girder already placed 4,resting on the rear pier 3'. In this description the terms front and rear are referred to the direction of advancement in the erection phases.
  • Both runway beams 1 and 2 are made of steel; they are composed of a central part 5 on the pier 3 supporting the girder 4 and two overhanging parts 6,7; the top surface of the runway beams is partially covered by stainless steel in proximity to the track rails (not rapresented in the drawings) for the sliding of the travelling crane 12,12'.
  • The front beam 1 has a slighter structure than the rear beam 2 and it is provided with a "seat" 8 for the passage of the cantilever 13, and in this seat there is a moveable drawer 9.
  • The rear beam 2 has a substantially square transversal cross section in order to support the torsional moments due to the cantilevered lifting in rispect to its own longitudinal axis.
  • Each runaway beam 1,2 is provided with anchoring falls 10 that link the overhanging part 7 to the ballast 11;it is also possible to link the anchoring falls 10 to some bars embedded in the pier base.
  • The invention provides also that the travelling cranes 12 and 12',sliding on the top face of the beam 1 and 2, have a teflon slide at their bottom surface; the rear travelling crane 12' is provided with a guide roller 16 against the runway beam 2 in order to avoid its overturning;these travelling cranes 12,12' are equipped with lifting devices consisting of rope winches or hydraulic jacks that carry out the lifting of the girder.
  • The erection of the girder, according to the method developed by this invention,takes place in this way:
    the travelling cranes 12,12' are displaced,by a rack and pinion device,at the extremity of the runway beams in the opposite position of the anchoring falls to the ballast.
  • In this configuration the travelling crane 12 rests upon the seat 8. The girder 4' to be lifted is transported by a barge 12 just besides the bases of the piers 3,3'.
  • This girder is provided of cantilevers,one in the front extremity 13 and two 14,not aligned with the front one,in the rear extremity of the girder;in this way the lifting is carried out in an isostatic way and it is always possible to foresee the real forces in each lifting device.
  • After having hooked the lifting falls (or bars) to the cantilevers 13,14 the girder is lifted till its bottom substantially reaches the top pier 3,3' level.
  • During the lifting phase (see fig. 12),while the cantilever 13 is raising, the movable drawer 9 is in a back position in order not to hamper the complete elevation of the girder.After having reached the final level (fig 13),while the cantilever is still suspended,the movable drawer 9 is pushed in a front position just under the extremity of the cantilever supporting the girder.In this way the continuity of the runaway is obtained,and thanks to a teflon slide is possible to drag (with a rack and pinion jack,not shown in the drawings) the girder to the final position,the cantilever resting on the runway.
  • When the girder 4' is aligned to the girder 4 already placed, the front extremity is further lifted;later on welding operations take place connecting the rear extremity to the previous girder.Thanks to this already known method it is possible to decrease the positive bending moments in the middle of the girder.
  • The invention provides also a stabilizing arm 17 that prevent the overturning of the front runaway beam due to wind forces, out of plumb,possible eccentricities,ecc.
  • At the end of that phases:
    • the cantilevers 13,14 are dismantled from the girder,
    • the front runway beam 1 is transported with a floating crane to next pier,
    • the rear runway beam 2 is displaced (fig. 11) over the girder already lifted until reaches the front end.
  • The present invention,as can be easily understood, has a lot of advantages,and in particular:
    • it can be used without modifing civil works because the bending moment in the pier shafts due to the erection procedures is usually lower than the one due to other foreseen accidental actions.
    • this method requires only a light strenghtening near the cantilevers of the girder in that,beeing the girder lifted at the extremities,the stresses condition are the same when it is normally supported at the ends.
  • The invention idea and the particular details of construction have been described and illustrated simply by way of example and it is obvious that these details may also be modified, while the essential characteristics of the invention remain unchanged,without exceeding the scope of the appended claims.

Claims (13)

  1. Method for the erection of a long girder comprising the steps of
    - placing a front runway beam (1) on the top of the front pier (3);
    - placing a rear runway beam (2) on the front extremity of the girder (4) previously erected;
    - lifting the girder (4') by means of lifting devices fixed to cantilevers (13, 14) provided at the extremities of the girder (4') to be lifted;
    - translating the girder (4') horizontally and transversely to the longitudinal direction of the girder into a position above the piers (3, 3').
  2. Equipment for the erection of long girders including:
    - a front runway beam (1) placed on the top of the front pier (3),
    - a rear runway beam (2) placed on the front extremity of the girder already erected (4),
    - lifting devices hoisting the girder (4') by means of cantilevers (13, 14) fixed at its extremities,
    - devices for the horizontal translation of the girder,
    - devices of anchoring (10, 11) the runway beams (1, 2) to the pier top,
    - devices of restraining the runway beams against the forces parallel to the girder axis,
    each runway beam being provided with a small movable gantry crane (12, 12'), running over the runway beam (1), carrying the lifting devices of the girder.
  3. An equipment according to claim 2,
    characterized by the fact that the front runway beam (1) is provided with a "seat" (8) for the passage of cantilever (13), and in this seat there is a movable drawer (9) in order to allow the subsequent sliding of the small travelling crane (12').
  4. An equipment according to claim 2,
    characterized by the fact that the runway beams (1, 2) are made of steel; they are composed of a central part (5) on the pier (3) supporting the girder (4) and two overhanging parts (6, 7).
  5. An equipment according to claim 4,
    characterized by the fact that the top surface of the runway beams (1, 2) is partially covered by stainless steel in proximity to the track rails for the sliding of the travelling crane (12, 12').
  6. An equipment according to claim 4,
    characterized in the fact that each runway beam (1, 2) is provided with anchoring falls (10) that link the overhanging part (7) to the ballast (11).
  7. An equipment according to claim 6,
    characterized by the fact that the lower part of the anchoring falls (10) can be fixed to the pier bases.
  8. An equipment according to claim 2,
    characterized by the fact that the travelling crane (12') is provided with a guide roller (16) against the runway beam (2) in order to avoid its overturning.
  9. An equipment according to claim 2,
    characterized by the fact that the travelling crane (12') is provided with a slide made of teflon at the bottom surface.
  10. An equipment according to claim 2,
    characterized by the fact that the horizontal translation means of the girder consist of hydraulic jacks.
  11. An equipment according to claim 2,
    characterized by the fact that the transversal crosss section of the runway beam (2) is substantially square.
  12. An equipment according to claim 2,
    characterized by the fact that the lifting device consists of rope winches or hydraulic jacks with steel strands.
  13. An equipment according to claim 2,
    characterized by the fact that the restraining beam (stabilizing arm) (17) consists in a steel structure that fixes the runway beam (1) to the higher part of the pier shaft.
EP93116976A 1992-10-21 1993-10-20 Method and device for erecting long spanning girders, particularly on viaducts Withdrawn EP0594151A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITVE920045A IT1261966B (en) 1992-10-21 1992-10-21 EQUIPMENT FOR THE INSTALLATION OF DECK BRIDGES IN GREAT LIGHT, IN PARTICULAR ON VIADUCTS
ITVE920045 1992-10-21

Publications (1)

Publication Number Publication Date
EP0594151A1 true EP0594151A1 (en) 1994-04-27

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EP93116976A Withdrawn EP0594151A1 (en) 1992-10-21 1993-10-20 Method and device for erecting long spanning girders, particularly on viaducts

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IT (1) IT1261966B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101713169B (en) * 2008-10-06 2011-02-09 中交第三航务工程局有限公司 Method for manufacturing segmental box girder
CN111021255A (en) * 2019-12-19 2020-04-17 中建六局土木工程有限公司 Continuous steel box girder pier and girder consolidation vertical prestress construction method
WO2020189847A1 (en) * 2019-03-19 2020-09-24 주식회사 제이디 엔지니어링 Method for installing and constructing girder bridge of marine bridge

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1233898B (en) * 1963-09-07 1967-02-09 Sager & Woerner Device for laying prefabricated bridge parts, especially bridge girders
GB2143269A (en) * 1983-07-13 1985-02-06 Dinardo And Partners Bridges for traversing waterways

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1233898B (en) * 1963-09-07 1967-02-09 Sager & Woerner Device for laying prefabricated bridge parts, especially bridge girders
GB2143269A (en) * 1983-07-13 1985-02-06 Dinardo And Partners Bridges for traversing waterways

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
UPSTONE: "THE RIO DE JANEIRO-NITEROI BRIDGE(BRAZIL)", ACIER STAHL STEEL, vol. 40, no. 7/8, July 1975 (1975-07-01), BRUSSEL BE, pages 246 - 247 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101713169B (en) * 2008-10-06 2011-02-09 中交第三航务工程局有限公司 Method for manufacturing segmental box girder
WO2020189847A1 (en) * 2019-03-19 2020-09-24 주식회사 제이디 엔지니어링 Method for installing and constructing girder bridge of marine bridge
CN111021255A (en) * 2019-12-19 2020-04-17 中建六局土木工程有限公司 Continuous steel box girder pier and girder consolidation vertical prestress construction method
CN111021255B (en) * 2019-12-19 2024-02-20 中建六局土木工程有限公司 Continuous steel box girder pier girder consolidation vertical prestress construction method

Also Published As

Publication number Publication date
ITVE920045A1 (en) 1994-04-22
IT1261966B (en) 1996-06-11
ITVE920045A0 (en) 1992-10-21

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