EP1668186B1 - Bridge particularly for crossing a passage of a navigation channel - Google Patents

Bridge particularly for crossing a passage of a navigation channel Download PDF

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Publication number
EP1668186B1
EP1668186B1 EP04787279.1A EP04787279A EP1668186B1 EP 1668186 B1 EP1668186 B1 EP 1668186B1 EP 04787279 A EP04787279 A EP 04787279A EP 1668186 B1 EP1668186 B1 EP 1668186B1
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EP
European Patent Office
Prior art keywords
span
bridge according
lifting
bridge
passage
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EP04787279.1A
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German (de)
French (fr)
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EP1668186A1 (en
Inventor
Jean-Pierre Ghilardi
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Technip Energies France SAS
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Technip France SAS
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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
    • E01D15/00—Movable or portable bridges; Floating bridges
    • E01D15/02—Vertical lift bridges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D18/00—Bridges specially adapted for particular applications or functions not provided for elsewhere, e.g. aqueducts, bridges for supporting pipe-lines

Definitions

  • the invention relates to a bridge intended to cross in particular a pass of a navigation channel according to the preamble of claim 1.
  • a bridge as described in the preamble of claim 1 is known from the patent US 1 157 450 .
  • the known bridge comprises lifting means of the pinion and rack type.
  • the present invention aims to provide a bridge having improved lifting means.
  • a bridge according to the invention comprises means set forth in the characterizing part of claim 1.
  • a lifting bridge 1 intended to allow the crossing of a Pass 2 of a maritime shipping lane essentially comprises a substantially horizontal, movable portion, in the form of a span 3, which is displaceable in translation, substantially vertically, between a low crossing position of the pass 2 and a high position of clearance of the pass, and fixed parts 4, 5, on either side of the span 3 and on which the latter bears in 7 and 8, by these two ends 9 and 10, in its crossing position.
  • the bridge further comprises a support structure 12 of the span 3 during the displacement thereof between its two positions of crossing the span and clearance of the latter, and means 14 which control the displacement of the span, called hereinafter lifting means.
  • the lifting bridge 1 comprises only one support structure 12 and one lifting control device 14, which are mounted on one side of the pass to be crossed. 2, namely in the example shown the fixed part 5.
  • This fixed support part is, in the examples shown, on one of the banks of the shipping lane, but could also be provided therein.
  • the support structure 12 is fixed and essentially comprises at each lateral side of the span 3 a vertical tower 16 anchored at its lower end in the fixed part of the bank 5 and which carries at its upper end a beam 17 which extends to from the pylon being inclined upwardly to substantially the middle of the span 2 and a beam 18 which extends upward at a substantially straight angle with respect to the beam 17.
  • the span 3 is suspended mainly during the lifting at the free end of each beam 17, by means of two lifting cables 20, 21 fixed at one end to the span 3 and made to pass over a pulley 23 mounted on the beam. end of the beam 17, along this beam, on another pulley 24 located at the top of the pylon and, then inside the pylon 16 to a traction device 25 disposed at the foot thereof.
  • This device could be a winch winding or unrolling hoisting ropes 20, 21, or any other suitable traction device, such as a jack.
  • each lifting cable 20, 21 is fixed to the span 3, at one end thereof.
  • each beam Since thus the span is suspended at the free ends of the beams 17, the end of each beam is retained by a stay 27 which extends between this end and the free end of the holding beam 18, a part, and between these ends and the fixed part 5 of the bridge on which it is fixed at 28 at an appropriate distance from the foot of the pylon 16 in the plane formed by this pylon and the suspension beams 17 and retaining 18.
  • the upper end of each pylon 16 is held in position by a reinforcing leg 30 which extends between the upper end of the pylon and the fixed part in the abovementioned plane, as seen on the Figures 1 to 4 or by two stays 32 according to the figure 5 .
  • the figure 6 shows yet another version of the reinforcing device of the support structure, which comprises in extension of the suspension beam 17, beyond the pylon 16, a beam portion 36 whose end is retained at the fixed part 5 by stays 37 and which also serves as anchoring place of the stay 27 for retaining the free end of the suspension beam 17.
  • a beam portion 36 whose end is retained at the fixed part 5 by stays 37 and which also serves as anchoring place of the stay 27 for retaining the free end of the suspension beam 17.
  • stays 27 and 37 of the beams could also use instead of the stays 27 and 37 of the beams.
  • the support structure 12 may consist of frames located on the sides of the span 2, which are independent or connected by any type of connection. In general, all geometries can be applied to this structure.
  • the weight of the span 3 suspended on the support structure 12 may be more or less balanced by counterweights, acting permanently or only during the lifting.
  • These counterweights such as those indicated at 39 are placed in the traction cables and are thus like these cables inside the towers.
  • any other suitable solution of the counterweights and traction cables may be considered.
  • the counterweights could in particular be "disengaged" and the cables can be released when the span is in crossing position of the pass.
  • the span 3 may be a self-supporting structure, of the lattice type, box, so-called Warren beam or Bow string or the like.
  • the span when moving, is maintained at its corresponding end in contact with the pylons 16 and thus guided at one end.
  • FIGS. 7 to 15 illustrate several versions of a second embodiment of a bridge according to the invention.
  • This second embodiment is characterized in that the lifting of the span 3 is ensured by the tilting of a beam 42 pivotally mounted at the top of the pylons 16.
  • the pivoting of the beam is done on rotational bearings, pivots, hard grains or any other tilting mechanism.
  • This beam is formed by two levers with two arms 43 connected to each other for example by a cross member 45 at the ends of the front arm 44, to which is suspended the span 3 by suspension cables 46, while at each free end of the rear arm 44 'whose length may be different from that of the front arm are connected traction cables 48 actuated by a traction device of any suitable nature such as winches or cylinders 50.
  • This traction device can be associated with a device for anchoring the beam in the fixed part 5, such as cables or bars or gantries, which blocks the tilting of the beam when the span is in the crossing position of the pass and which does not prevent the action of the traction device during lifting.
  • a counterweight 52 may be interposed between the end of the edge of the lever 44 'and each cable 48.
  • Each lever with two arms 43 comprises at the tip of the support pylon 16 a transverse beam 54, which protrudes upwards and prevents bending of the lever by means of stays 56 and 57 fixed between the end of the beam 54 and the ends of the suspension arms 44 and traction 44 'of the levers 43.
  • each pylon 16 comprises a guideway 59 arcuate accordingly on which bears the adjacent end of the span 3.
  • a device for horizontal displacement of the flail pivot mechanism during lifting could prevent the curvature of the guide path.
  • the figure 10 shows a bridge structure which has two separate spans 3, 3 'and independent lift. Each bay is suspended from a beam 42 as described above.
  • the two flails could be mounted on two pairs of pylons 16 or on a device of three pylons whose central pylon indicated in 16 'on the figure 10 would then be common to both scourges.
  • the span 3 is a guyed structure, that is to say, carried by a multitude of stays 62, both in the service position, that is to say in its crossing position represented on the figures 11 and 12 than lifting according to the figure 13 , which allows a simplification of the structure of the span, including relief, as shown in the figures, since the span does not need to be self-supporting. This results in a reduction in the weight of the span.
  • this implementation version of the span in the form of a guyed span may also be applied to a two-span bridge, in accordance with the figure 9 .
  • FIG. figure 16 Another very advantageous embodiment is shown in FIG. figure 16 .
  • the span is not suspended from the beam 42 by means of the suspension device indicated at 64, in its center of gravity symbolized by the arrow 65, but at a location offset from the center 65 towards the pylons 16 so that the span, when raised, tends to swing towards the arrow 66.
  • the amplitude of this offset identified in the figure by the letter "a" is determined according to the effects of maximum wind that can act on the system.
  • the tilting in the direction of the arrow 66 could also be caused by a mass that will be added at the far end of the pylons, the span, as is schematically indicated in 71.
  • This version has the advantage that the suspension of the span can be made in its center of gravity.
  • the support structures can be designed differently, however, taking care that the constituent elements of these structures are preferably solicited in tension or compression.
  • the counterweights could be placed differently, integrated or not to support structures, for example integrated flails. Also, all types of arrangements for the shrouds, and in particular their number, can be envisaged.
  • the invention allows the realization of bridges with spans of significant length, up to 100 m or more.

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

Description

L'invention concerne un pont destiné à franchir notamment une passe d'une voie de navigation selon le préambule de la revendication 1.The invention relates to a bridge intended to cross in particular a pass of a navigation channel according to the preamble of claim 1.

Un pont tel que décrit dans le préambule de la revendication 1 est connu par le brevet US 1 157 450 .A bridge as described in the preamble of claim 1 is known from the patent US 1 157 450 .

Le pont connu comporte des moyens de levage du type à pignons et crémaillères.The known bridge comprises lifting means of the pinion and rack type.

La présente invention a pour but de proposer un pont présentant un moyen de levage amélioré.The present invention aims to provide a bridge having improved lifting means.

Pour atteindre ce but, un pont selon l'invention comporte des moyens énoncés dans la partie caractérisante de la revendication 1.To achieve this goal, a bridge according to the invention comprises means set forth in the characterizing part of claim 1.

D'autres caractéristiques avantageuses de l'invention sont indiquées dans des revendications dépendantes.Other advantageous features of the invention are indicated in dependent claims.

L'invention sera mieux comprise, et d'autres buts, caractéristiques, détails et avantages de celle-ci apparaîtront plus clairement au cours de la description explicative qui va suivre faite en référence aux dessins annexés donnés uniquement à titre d'exemple illustrant deux modes de réalisation de l'invention et dans lesquels :

  • les figures 1 et 2 sont des vues en perspective d'un premier mode de réalisation d'un pont selon l'invention, le pont occupant sa position basse de franchissement de la passe d'une voie de navigation ;
  • les figures 3 et 4 sont des vues en perspective du mode de réalisation selon les figures 1 et 2, mais montrent ce pont dans sa position élevée de dégagement de la passe ;
  • les figures 5 et 6 sont des vues en perspective de deux versions de réalisation différentes du pont selon les figures 1 à 4 ;
  • les figures 7 et 8 sont des vues en perspective qui illustrent un deuxième mode de réalisation d'un pont selon l'invention dans sa position de franchissement de passe ;
  • la figure 9 est une vue en perspective du pont selon les figures 7 et 8, mais montre celui-ci dans sa position élevée de dégagement de la passe ;
  • la figure 10 est une vue en perspective d'un pont à deux travées selon les figures 7 à 9 ;
  • les figures 11 et 12 sont des vues en perspective d'une autre version du second mode de réalisation d'un pont selon l'invention, illustrant celui-ci dans sa position de franchissement de la passe ;
  • la figure 13 est une vue en perspective du pont selon les figures 11 et 12, mais illustrent celui-ci dans sa position élevée de dégagement de la passe ;
  • la figure 14 est une vue en perspective d'une version du second mode de réalisation d'un pont selon l'invention, comportant deux travées mobiles dont l'une est représentée dans sa position de franchissement de la passe et l'autre dans sa position élevée de dégagement de cette dernière ;
  • la figure 15 est une vue de dessus du pont selon la figure 14, mais dont les deux travées occupent leur position de franchissement de la passe, et
  • la figure 16 est une vue schématique latérale d'encore un autre mode de réalisation de l'invention.
The invention will be better understood, and other objects, features, details and advantages thereof will appear more clearly in the following explanatory description made with reference to the accompanying drawings given solely by way of example illustrating two modes. embodiments of the invention and in which:
  • the figures 1 and 2 are perspective views of a first embodiment of a bridge according to the invention, the bridge occupying its low position crossing the pass of a navigation channel;
  • the figures 3 and 4 are perspective views of the embodiment according to the figures 1 and 2 but show this bridge in its high position of clearance of the pass;
  • the figures 5 and 6 are perspective views of two different embodiments of the bridge according to the Figures 1 to 4 ;
  • the figures 7 and 8 are perspective views which illustrate a second embodiment of a bridge according to the invention in its crossing position;
  • the figure 9 is a perspective view of the bridge according to figures 7 and 8 but shows it in its high position of clearance of the pass;
  • the figure 10 is a perspective view of a two-span bridge according to Figures 7 to 9 ;
  • the figures 11 and 12 are perspective views of another version of the second embodiment of a bridge according to the invention, illustrating it in its crossing position of the pass;
  • the figure 13 is a perspective view of the bridge according to figures 11 and 12 but illustrate it in its high position of clearance of the pass;
  • the figure 14 is a perspective view of a version of the second embodiment of a bridge according to the invention, comprising two movable spans, one of which is represented in its crossing position of the pass and the other in its elevated position of release of the latter;
  • the figure 15 is a top view of the bridge according to the figure 14 but whose two bays occupy their crossing position, and
  • the figure 16 is a schematic side view of yet another embodiment of the invention.

Comme l'illustrent les figures, un pont levant 1 selon l'invention, destiné à permettre le franchissement d'une passe 2 d'une voie de navigation maritime comprend essentiellement une partie sensiblement horizontale, mobile, en forme d'une travée 3, qui est déplaçable en translation, sensiblement verticalement, entre une position basse de franchissement de la passe 2 et une position élevée de dégagement de la passe, et des parties fixes 4, 5, de part et d'autre de la travée 3 et sur lesquelles cette dernière prend appui en 7 et 8, par ces deux extrémités 9 et 10, dans sa position de franchissement. Le pont comprend encore une structure 12 de support de la travée 3 lors du déplacement de celle-ci entre ses deux positions de franchissement de la travée et de dégagement de celle-ci, et des moyens 14 qui commandent le déplacement de la travée, appelée ci-après moyens de levage.As illustrated in the figures, a lifting bridge 1 according to the invention, intended to allow the crossing of a Pass 2 of a maritime shipping lane essentially comprises a substantially horizontal, movable portion, in the form of a span 3, which is displaceable in translation, substantially vertically, between a low crossing position of the pass 2 and a high position of clearance of the pass, and fixed parts 4, 5, on either side of the span 3 and on which the latter bears in 7 and 8, by these two ends 9 and 10, in its crossing position. The bridge further comprises a support structure 12 of the span 3 during the displacement thereof between its two positions of crossing the span and clearance of the latter, and means 14 which control the displacement of the span, called hereinafter lifting means.

Comme on le voit sur les figures, le pont levant 1 selon l'invention ne comporte qu'une seule structure de support 12 et qu'un seul dispositif de commande du levage 14, qui sont montés sur un seul côté de la passe à franchir 2, à savoir dans l'exemple représenté la partie fixe 5. Cette partie fixe d'appui se trouve, dans les exemples représentés, sur une des berges de la voie de navigation, mais pourrait aussi être prévue dans celle-ci.As seen in the figures, the lifting bridge 1 according to the invention comprises only one support structure 12 and one lifting control device 14, which are mounted on one side of the pass to be crossed. 2, namely in the example shown the fixed part 5. This fixed support part is, in the examples shown, on one of the banks of the shipping lane, but could also be provided therein.

Selon un premier mode de réalisation représenté sur les figures 1 à 6, la structure de support 12 est fixe et comprend essentiellement à chaque côté latéral de la travée 3 un pylône vertical 16 ancré à son extrémité inférieure dans la partie fixe de berge 5 et qui porte à son extrémité supérieure une poutre 17 qui s'étend à partir du pylône en étant incliné vers le haut jusqu'à sensiblement le milieu de la travée 2 et une poutre 18 qui s'étend vers le haut, selon un angle sensiblement droit par rapport à la poutre 17.According to a first embodiment shown on the Figures 1 to 6 , the support structure 12 is fixed and essentially comprises at each lateral side of the span 3 a vertical tower 16 anchored at its lower end in the fixed part of the bank 5 and which carries at its upper end a beam 17 which extends to from the pylon being inclined upwardly to substantially the middle of the span 2 and a beam 18 which extends upward at a substantially straight angle with respect to the beam 17.

La travée 3 est suspendue principalement pendant le levage à l'extrémité libre de chaque poutre 17, par l'intermédiaire de deux câbles de levage 20, 21 fixés par une extrémité à la travée 3 et amenés à passer sur une poulie 23 montée sur l'extrémité de la poutre 17, le long de cette poutre, sur une autre poulie 24 située en haut du pylône et, ensuite à l'intérieur du pylône 16 à un dispositif de traction 25 disposé au pied de celui-ci. Ce dispositif pourrait être un treuil d'enroulement ou de déroulement des câbles de levage 20, 21, ou tout autre dispositif de traction approprié, tel qu'un vérin. Pour assurer la position horizontale de la travée 3, chaque câble de levage 20, 21 est fixé à la travée 3, au niveau d'une extrémité de celle-ci.The span 3 is suspended mainly during the lifting at the free end of each beam 17, by means of two lifting cables 20, 21 fixed at one end to the span 3 and made to pass over a pulley 23 mounted on the beam. end of the beam 17, along this beam, on another pulley 24 located at the top of the pylon and, then inside the pylon 16 to a traction device 25 disposed at the foot thereof. This device could be a winch winding or unrolling hoisting ropes 20, 21, or any other suitable traction device, such as a jack. To ensure the horizontal position of the span 3, each lifting cable 20, 21 is fixed to the span 3, at one end thereof.

Etant donné qu'ainsi la travée est suspendue aux extrémités libres des poutres 17, l'extrémité de chaque poutre est retenue par un hauban 27 qui s'étend entre cette extrémité et l'extrémité libre de la poutre de maintien 18, d'une part, et entre ces extrémités et la partie fixe 5 du pont sur lequel il est fixé en 28 à une distance appropriée du pied du pylône 16 dans le plan formé par ce pylône et les poutres de suspension 17 et de retenue 18. Pour renforcer la structure de support de la travée, l'extrémité supérieure de chaque pylône 16 est maintenue en position par une jambe de renforcement 30 qui s'étend entre l'extrémité supérieure du pylône et la partie fixe dans le plan susmentionné, comme on le voit sur les figures 1 à 4 ou par deux haubans 32 selon la figure 5. La figure 6 montre encore une autre version du dispositif de renforcement de la structure de support, qui comporte en prolongement de la poutre de suspension 17, au-delà du pylône 16, une partie de poutre 36 dont l'extrémité est retenue à la partie fixe 5 par des haubans 37 et qui sert aussi d'endroit d'ancrage du hauban 27 de retenue de l'extrémité libre de la poutre de suspension 17. Bien entendu, on pourrait aussi utiliser à la place des haubans 27 et 37 des poutres.Since thus the span is suspended at the free ends of the beams 17, the end of each beam is retained by a stay 27 which extends between this end and the free end of the holding beam 18, a part, and between these ends and the fixed part 5 of the bridge on which it is fixed at 28 at an appropriate distance from the foot of the pylon 16 in the plane formed by this pylon and the suspension beams 17 and retaining 18. To reinforce the support structure of the bay, the upper end of each pylon 16 is held in position by a reinforcing leg 30 which extends between the upper end of the pylon and the fixed part in the abovementioned plane, as seen on the Figures 1 to 4 or by two stays 32 according to the figure 5 . The figure 6 shows yet another version of the reinforcing device of the support structure, which comprises in extension of the suspension beam 17, beyond the pylon 16, a beam portion 36 whose end is retained at the fixed part 5 by stays 37 and which also serves as anchoring place of the stay 27 for retaining the free end of the suspension beam 17. Of course, one could also use instead of the stays 27 and 37 of the beams.

On constate que la structure de support 12 peut être constituée de charpentes situées sur les côtés de la travée 2, qui sont indépendantes ou reliées par tout type de liaison. De façon générale, toutes géométries peuvent être appliquées à cette structure.It can be seen that the support structure 12 may consist of frames located on the sides of the span 2, which are independent or connected by any type of connection. In general, all geometries can be applied to this structure.

Le poids de la travée 3 suspendue à la structure de support 12 peut être plus ou moins équilibré par des contrepoids, agissant en permanence ou uniquement pendant le levage. Ces contrepoids, comme par exemple ceux indiqués en 39 sont placés dans les câbles de traction et se trouvent ainsi, comme ces câbles à l'intérieur des pylônes. Bien entendu, toute autre solution appropriée des contrepoids et des câbles de traction peut être envisagée. Les contrepoids pourraient notamment être "débrayés" et les câbles peuvent être relâchés lorsque la travée est en position de franchissement de la passe.The weight of the span 3 suspended on the support structure 12 may be more or less balanced by counterweights, acting permanently or only during the lifting. These counterweights, such as those indicated at 39 are placed in the traction cables and are thus like these cables inside the towers. Of course, any other suitable solution of the counterweights and traction cables may be considered. The counterweights could in particular be "disengaged" and the cables can be released when the span is in crossing position of the pass.

La travée 3 peut être une structure autoporteuse, du type treillis, caisson, poutre dite Warren ou Bow string ou analogue.The span 3 may be a self-supporting structure, of the lattice type, box, so-called Warren beam or Bow string or the like.

Il est encore à noter que la travée, lors de son déplacement, est maintenue à son extrémité correspondante en contact avec les pylônes 16 et ainsi guidée à une seule extrémité.It should also be noted that the span, when moving, is maintained at its corresponding end in contact with the pylons 16 and thus guided at one end.

Les figures 7 à 15 illustrent plusieurs versions d'un second mode de réalisation d'un pont selon l'invention.The Figures 7 to 15 illustrate several versions of a second embodiment of a bridge according to the invention.

Ce second mode de réalisation est caractérisé par le fait que le levage de la travée 3 est assuré par le basculement d'un fléau 42 monté pivotant en haut des pylônes 16. Le pivotement du fléau se fait sur des paliers de rotation, des pivots, des grains durs ou tout autre mécanisme de basculement. Ce fléau est formé par deux leviers à deux bras 43 reliés l'un à l'autre par exemple par une traverse 45 aux extrémités du bras avant 44, auxquelles est suspendue la travée 3 par des câbles de suspension 46, tandis qu'à chaque extrémité libre du bras arrière 44' dont la longueur peut être différente de celle du bras avant sont reliés des câbles de traction 48 actionné par un dispositif de traction de toute nature appropriée tel que des treuils ou des vérins 50. Ce dispositif de traction peut être associé à un dispositif d'ancrage du fléau dans la partie fixe 5, tel que câbles ou barres ou portiques, qui bloque le basculement du fléau lorsque la travée est en position de franchissement de la passe et qui n'empêche pas l'action du dispositif de traction pendant le levage. Pour au moins partiellement compenser le poids de la travée, un contrepoids 52 peut être interposé entre l'extrémité du bord du levier 44' et chaque câble 48. Chaque levier à deux bras 43 comporte au niveau de la pointe du pylône de support 16 une poutre transversale 54, qui fait saillie vers le haut et permet d'éviter une flexion du levier grâce à des haubans 56 et 57 fixés entre l'extrémité de la poutre 54 et les extrémités des bras de suspension 44 et de traction 44' des leviers 43.This second embodiment is characterized in that the lifting of the span 3 is ensured by the tilting of a beam 42 pivotally mounted at the top of the pylons 16. The pivoting of the beam is done on rotational bearings, pivots, hard grains or any other tilting mechanism. This beam is formed by two levers with two arms 43 connected to each other for example by a cross member 45 at the ends of the front arm 44, to which is suspended the span 3 by suspension cables 46, while at each free end of the rear arm 44 'whose length may be different from that of the front arm are connected traction cables 48 actuated by a traction device of any suitable nature such as winches or cylinders 50. This traction device can be associated with a device for anchoring the beam in the fixed part 5, such as cables or bars or gantries, which blocks the tilting of the beam when the span is in the crossing position of the pass and which does not prevent the action of the traction device during lifting. To at least partially compensate for the weight of the span, a counterweight 52 may be interposed between the end of the edge of the lever 44 'and each cable 48. Each lever with two arms 43 comprises at the tip of the support pylon 16 a transverse beam 54, which protrudes upwards and prevents bending of the lever by means of stays 56 and 57 fixed between the end of the beam 54 and the ends of the suspension arms 44 and traction 44 'of the levers 43.

Etant donné que lors de son déplacement sous l'effet du basculement du fléau 42, entre ses deux positions de franchissement de la passe 2 et de dégagement de celle-ci, la travée décrit un léger arc de cercle dans le plan vertical, chaque pylône 16 comporte un chemin de guidage 59 arqué en conséquence sur lequel prend appui l'extrémité adjacente de la travée 3. Un dispositif de déplacement horizontal du mécanisme de pivotement du fléau pendant le levage pourrait permettre d'éviter la courbure de ce chemin de guidage.Since during its displacement under the effect of the tilting of the beam 42, between its two crossing positions of the pass 2 and clearance thereof, the span describes a slight arc in the vertical plane, each pylon 16 comprises a guideway 59 arcuate accordingly on which bears the adjacent end of the span 3. A device for horizontal displacement of the flail pivot mechanism during lifting could prevent the curvature of the guide path.

La figure 10 montre une structure de pont qui comporte deux travées 3, 3' séparées et à levage indépendant. Chaque travée est suspendue à un fléau 42 tel que décrit ci avant. Les deux fléaux pourraient être montés sur deux paires de pylônes 16 ou sur un dispositif de trois pylônes dont le pylône central indiqué en 16' sur la figure 10 serait alors commun aux deux fléaux.The figure 10 shows a bridge structure which has two separate spans 3, 3 'and independent lift. Each bay is suspended from a beam 42 as described above. The two flails could be mounted on two pairs of pylons 16 or on a device of three pylons whose central pylon indicated in 16 'on the figure 10 would then be common to both scourges.

En se référant aux figures 11 à 15, on décrira ci-après une version particulièrement avantageuse de mise en oeuvre du mode de réalisation du pont à levage des travées par basculement d'un fléau. Dans cette version de mise en oeuvre, la travée 3 est une structure haubanée, c'est-à-dire portée par une multitude de haubans 62, aussi bien en position de service, c'est-à-dire dans sa position de franchissement représentée sur les figures 11 et 12 qu'en levage selon la figure 13, ce qui permet une simplification de la structure de la travée, notamment un allègement, comme cela ressort des figures, puisque la travée n'a plus besoin d'être autoporteuse. On obtient ainsi une réduction du poids de la travée.Referring to Figures 11 to 15 Hereinafter, a particularly advantageous version of the implementation of the embodiment of the bridge lifting beams by tilting a beam is described below. In this version of implementation, the span 3 is a guyed structure, that is to say, carried by a multitude of stays 62, both in the service position, that is to say in its crossing position represented on the figures 11 and 12 than lifting according to the figure 13 , which allows a simplification of the structure of the span, including relief, as shown in the figures, since the span does not need to be self-supporting. This results in a reduction in the weight of the span.

Comme l'illustrent la figure 14, cette version de mise en oeuvre de la travée sous forme d'une travée haubanée peut aussi être appliquée à un pont à deux travées, conformément à la figure 9.As illustrated by figure 14 , this implementation version of the span in the form of a guyed span may also be applied to a two-span bridge, in accordance with the figure 9 .

Un autre mode de réalisation, très avantageux, est représenté à la figure 16. Dans ce mode de réalisation la travée n'est pas suspendue au fléau 42 par l'intermédiaire du dispositif de suspension indiqué en 64, en son centre de gravité symbolisé par la flèche 65, mais à un emplacement décalé du centre 65 en direction des pylônes 16 de façon que la travée, lorsqu'elle est soulevée, a tendance à basculer en direction de la flèche 66. L'amplitude de ce décalage identifié sur la figure par la lettre « a » est déterminée en fonction des effets de vent maximal pouvant agir sur le système.Another very advantageous embodiment is shown in FIG. figure 16 . In this embodiment the span is not suspended from the beam 42 by means of the suspension device indicated at 64, in its center of gravity symbolized by the arrow 65, but at a location offset from the center 65 towards the pylons 16 so that the span, when raised, tends to swing towards the arrow 66. The amplitude of this offset identified in the figure by the letter "a" is determined according to the effects of maximum wind that can act on the system.

La rotation ainsi provoquée par la travée, lorsqu'elle est soulevée, en direction de la flèche 66 est empêchée en tirant la travée vers le bas sur son extrémité côté pylône 68 au moyen d'un couple de câbles 69 qui sont susceptibles d'être enroulés chacun sur un treuil 70 ou déroulés de celui-ci. Chaque treuil 70 disposé en pied du pylône 16 déroule son câble au fur et à mesure du levage de la travée pour assurer le suivi en position et la stabilité de celle-ci, quelques soient les conditions de vent. Pendant le levage, la travée est ainsi stabilisée en toute direction à la fois par sa suspension au fléau et par le dispositif de câble suiveur qui contrôle la rotation de l'ensemble suspension/travée sous le fléau en lui interdisant tout mouvement pendulaire intempestif. A cette fin les mouvements de déroulement ou d'enroulement des treuils 50 sont asservis au basculement du fléau.The rotation thus caused by the bay, when raised, in the direction of the arrow 66 is prevented by pulling the bay down on its end on the pylon side 68 by means of a pair of cables 69 which are capable of being each wound on a winch 70 or unrolled thereof. Each winch 70 disposed at the foot of the pylon 16 unrolls its cable as and when lifting the span to ensure the position and stability of the latter, whatever the wind conditions. During lifting, the span is thus stabilized in any direction both by its beam suspension and by the follower cable device which controls the rotation of the suspension / span assembly under the beam by preventing any inadvertent pendulum movement. To this end, the unwinding movements or winding of the winches 50 are slaved to the tilting of the beam.

Il est à noter que le basculement dans la direction de la flèche 66 pourrait aussi être occasionné par une masse que l'on ajoutera au niveau de l'extrémité éloignée des pylônes, de la travée, comme cela est schématiquement indiqué en 71. Cette version présente l'avantage que la suspension de la travée peut être faite en son centre de gravité.It should be noted that the tilting in the direction of the arrow 66 could also be caused by a mass that will be added at the far end of the pylons, the span, as is schematically indicated in 71. This version has the advantage that the suspension of the span can be made in its center of gravity.

Bien entendu, de multiples modifications peuvent être apportées au pont tel que représenté sur les figures. Ainsi les structures de support peuvent être conçues différemment en prenant cependant soin que les éléments constitutifs de ces structures soient préférablement sollicités en traction ou compression. Les contrepoids pourraient être placés différemment, intégrés ou non aux structures de support, par exemple intégrés aux fléaux. Ainsi également, tous types d'aménagements pour les nappes de haubans, et notamment leur nombre, peuvent être envisagés.Of course, multiple modifications can be made to the bridge as shown in the figures. Thus the support structures can be designed differently, however, taking care that the constituent elements of these structures are preferably solicited in tension or compression. The counterweights could be placed differently, integrated or not to support structures, for example integrated flails. Also, all types of arrangements for the shrouds, and in particular their number, can be envisaged.

Il est à noter que l'invention permet la réalisation de ponts comportant des travées d'une longueur importante, pouvant atteindre 100 m ou plus.It should be noted that the invention allows the realization of bridges with spans of significant length, up to 100 m or more.

Claims (16)

  1. A bridge, particularly for crossing a passage of a navigation channel and including a part in the form of a span, translatable heightwise between a lower position for crossing the passage, in which the span rests on fixed bearing parts of the bridge, and an upper position for freeing the passage, and a support structure for the span during the movement of the latter as well as means for lifting the span, the bridge including a single support structure (12), which is positioned on a single side (5) of the passage (2) to be crossed, characterized in that it is provided with lifting means (14) that control the movement of the span using traction cables.
  2. The bridge according to claim 1, characterized in that the lifting means include traction cables (20, 21) whereof one end is fastened to the span (3) and the other end is connected to a traction device (25), passing through pulleys (23, 24) that are part of the support structure (12).
  3. The bridge according to claim 2, characterized in that two lifting cables (20, 21) are fastened on each side of the span (3) and pass over a pulley (23) mounted on the support structure (12) in a vertical plane passing through the middle of the span (3).
  4. The bridge according to claim 3, characterized in that the support structure (12) includes two pylons (16) for supporting beams (17) each provided at their free end with a pulley (23) on which lifting cables (20, 21) for lifting the span pass.
  5. The bridge according to claim 4, characterized in that the pylons (16) and the beams (27) are provided with reinforcing elements such as beams (30) or cross braces (27, 37).
  6. The bridge according to claim 1, characterized in that the lifting means for lifting the span (3) include a balance beam (42) pivotably mounted on a support structure (16), at one end of which the span (3) is suspended, while pivoting actuating means (50) are connected to the other end.
  7. The bridge according to claim 6, characterized in that the span (3) is made in the form of a self-supporting structure suspended at the free end of the balance beam (42) by suspension cables (46).
  8. The bridge according claim 6, characterized in that the span (3) has a lightened structure, borne by a multitude of cross braces, both in its lower position for crossing the passage (2) and its upper position for freeing the passage, the cross braces being suspended at the aforementioned end of the balance beam.
  9. The bridge according to one of claims 6 to 8, characterized in that a balance beam (42) is formed by two levers (43) with two arms (44, 44') each pivotably mounted on a pylon (16) while, if applicable, being connected by a crossbeam (45).
  10. The bridge according to one of claims 1 to 9, characterized in that the weight of the span is at least partially compensated by counterweights (39, 52).
  11. The bridge according to one of claims 6 to 10, characterized in that it includes means for stabilizing the span during lifting thereof.
  12. The bridge according to claim 11, characterized in that stabilizing means include a guide path (59) for the end on the pylon side of the span (3) during lifting thereof.
  13. The bridge according to claim 11, characterized in that the span is provided with means suitable for tilting the span such that the end thereof, which is separated from the pylons (68), is made to move downward, and cables (69) that are fastened to the end on the pylon (68) side of the span and are capable of each being wound on a winch (70) or being unwound therefrom to prevent said tilting of the span.
  14. The bridge according to claim 13, characterized in that the unwinding and winding movements of the winches (70) are subject to the tilting of the balance beam (42).
  15. The bridge according to one of claims 13 or 14, characterized in that the aforementioned tilting means are formed by shifting the point of application to the span (3) of the suspension device below the balance beam (42), by a predetermined distance (a) toward the pylons (16).
  16. The bridge according to one of claims 13 or 14, characterized in that the tilting means of the aforementioned span are formed by an additional mass (71) added to the end of the span (3), which is separate from the pylons.
EP04787279.1A 2003-09-22 2004-09-01 Bridge particularly for crossing a passage of a navigation channel Not-in-force EP1668186B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0311099A FR2860013B1 (en) 2003-09-22 2003-09-22 BRIDGE INTENDED TO EXCEED A PASSWORD OF A NAVIGATION ROAD
PCT/FR2004/002223 WO2005033411A1 (en) 2003-09-22 2004-09-01 Bridge particularly for crossing a passage of a navigation channel

Publications (2)

Publication Number Publication Date
EP1668186A1 EP1668186A1 (en) 2006-06-14
EP1668186B1 true EP1668186B1 (en) 2014-04-09

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US (1) US7557510B2 (en)
EP (1) EP1668186B1 (en)
KR (1) KR101144856B1 (en)
CN (1) CN1856625B (en)
CA (1) CA2539347C (en)
FR (1) FR2860013B1 (en)
WO (1) WO2005033411A1 (en)

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CA2539347A1 (en) 2005-04-14
FR2860013B1 (en) 2007-12-28
FR2860013A1 (en) 2005-03-25
CN1856625A (en) 2006-11-01
CA2539347C (en) 2012-05-29
WO2005033411A1 (en) 2005-04-14
AU2004278524A1 (en) 2005-04-14
KR20070030728A (en) 2007-03-16
US20080022468A1 (en) 2008-01-31
US7557510B2 (en) 2009-07-07
EP1668186A1 (en) 2006-06-14
CN1856625B (en) 2013-10-23
KR101144856B1 (en) 2012-05-15

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