EP1681396B1 - Bridge the upper slab of which comprises ears - Google Patents

Bridge the upper slab of which comprises ears Download PDF

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Publication number
EP1681396B1
EP1681396B1 EP06290069A EP06290069A EP1681396B1 EP 1681396 B1 EP1681396 B1 EP 1681396B1 EP 06290069 A EP06290069 A EP 06290069A EP 06290069 A EP06290069 A EP 06290069A EP 1681396 B1 EP1681396 B1 EP 1681396B1
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Prior art keywords
lugs
bridge
pivoting
slab
upper slab
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German (de)
French (fr)
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EP1681396A3 (en
EP1681396A2 (en
Inventor
Jean-Marie Beauthier
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Soletanche Freyssinet SA
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Freyssinet SAS
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them

Definitions

  • the present invention relates to a bridge intended to provide a passage under a rail, road or motorway traffic lane arranged in an elevated position on an embankment, and more particularly a bridge which is built on one side of the embankment, before the realization of a a breach in the latter, which is designed to be moved by shifting until it is put in place in the breach, before the return to service of the lane which is thus interrupted only for a relatively short period of time .
  • Such a bridge which is known from the French patent FR 2749331 of the same depositor, comprises a raft supporting two vertical side walls connected by an upper slab, the latter comprising two lateral sections which extend beyond the side walls. The free end of each lateral section is connected to the supporting base by an inclined connecting wall which retains the lands of the slope.
  • the height of the side walls and the length of the lateral sections have substantially the same value, so that the inclined connecting walls, which retain the slope over the width of the bridge, make an angle of the order of 45 ° with a horizontal plane.
  • the present invention proposes to extend each lateral section of the upper slab of the bridge, beyond its junction with the inclined connecting wall, so that the ratio of the length of the lateral section thus extended over the height of the vertical wall is of the order of 3 out of 2.
  • the slope, which starts at the extended end of the lateral section indeed has the desired inclination of about 33 ° for holding the land.
  • the lateral sections of the upper slab each comprise two parallel ears extending in their extension, which is known per se. FR 2,774,710 .
  • the ears of the two lateral sections of the upper slab are respectively aligned with each other.
  • This wing structure thus makes it possible to increase the distance between the end of the lateral sections thus extended and the vertical walls of the bridge, so as to arrive at the foot of the slope, inclined at 33 °, at the intersection of each vertical wall. and the support raft.
  • the first walls carried by the inclined connecting walls of the known bridge can be deleted.
  • the above proposed wing structure requires, however, earthworks in the open upper edges of the slope, for the passage of the ears during the shifting of the bridge, then the execution of a thorough backfilling once the structure in place for avoid subsequent settlements.
  • the invention provides that one of the ears of each lateral section is able to pivot between a waiting position in which it is raised and a final position in which it is in the extension of the section corresponding side, the pivoting lugs being located in the extension of the longitudinal side of the upper slab which is located forward considering the direction of shifting.
  • the pivoting lugs are articulated on the lateral sections of the upper slab, at a hinge parallel to the side walls of the bridge, control means such as hydraulic or pneumatic cylinders, mittens or winches being interposed between the pivoting lugs and the corresponding lateral sections for moving said pivoting lugs between their waiting position and their final position.
  • control means such as hydraulic or pneumatic cylinders, mittens or winches being interposed between the pivoting lugs and the corresponding lateral sections for moving said pivoting lugs between their waiting position and their final position.
  • the two hinged ears that is to say those arranged forward in the direction of shifting, will be raised during the movement of the bridge, folded at the end of travel in appropriate housing arranged in the upper edges of the upper slope, and fixed in this position to the lateral sections of the upper slab.
  • the fixed rear lugs come to engage at the end of displacement of the bridge in other accommodations in the rear edges of the slope.
  • the pivoting lugs contain metal rods connected to sleeves embedded in the corresponding lateral sections of the upper slab.
  • the pivoting lugs can be rigidly connected to the lateral sections, which allows them to be secured to the bridge.
  • the rods of the pivoting lugs are screwed into the sleeves of the lateral sections and housed in channels formed in said lugs and filled with anti-corrosion materials with screwing.
  • the pivoting lugs comprise at least two parallel metal rods and adjacent to their inner longitudinal face.
  • pivoting lugs can withstand the forces to which the backfill material submits them during the passage of vehicles moving on the taxiway.
  • the pivoting lugs may further comprise at least one metal rod parallel to and adjacent to the upper part of their outer longitudinal face.
  • the deck of the deck may comprise two lateral extensions which extend beyond the side walls, the inclined connecting walls connecting the free ends of the lateral sections of the upper slab at the free ends of the corresponding lateral extensions of the slab.
  • This arrangement which increases the distance between the base of each inclined connecting wall and the corresponding vertical wall, makes it possible to still arrive at the foot of the inclined slope at 33 ° at the intersection of the vertical wall and the support raft while allowing a decrease in the length of the ears.
  • a bridge 1 intended to allow the crossing, from below, two railway tracks 2 located on a slope 3.
  • the bridge 1 is built in a manner known per se on one side of the slope, in view of the desired crossing point of the railway, so that it remains operational during construction.
  • the railway tracks 2 and the embankment 3 are respectively interrupted and opened, whereupon the bridge 1 is slid into the breach thus opened while the railway tracks 2 are re-established on the bridge which provides a passage under these.
  • the bridge 1 is constituted by a frame comprising at its lower part a raft 4 supporting two vertical side walls 5 which are connected at their upper end by a horizontal slab 6.
  • the slab 6 is extended on each side, beyond the wall corresponding vertical section 5, by a lateral section 7 whose free end is connected, by an inclined wall 8, to the free end of lateral extensions 9 of the support raft 4.
  • the inclined connecting wall 8 is made with the lateral section 7 an angle of the order of 45 °.
  • the support raft 4 rests on a fixed base 10 which ensures its guidance during the shifting operation.
  • complementary metal angles 11 and 11 ' are respectively incorporated in the supporting racks 4 and guide 10 with interposition of a material facilitating sliding and absorbing defects of parallelism.
  • Each lateral section 7 is extended by two lugs 12, 12 'arranged symmetrically with respect to the median longitudinal axis of the bridge 1, each lug 12, 12' of one of the lateral sections 7 being aligned with the lug 12, 12 corresponding to the other lateral section 7.
  • the ears 12 arranged upstream that is to say those placed forward looking at the arrow F of figures 3 and 4 indicating the direction of shifting of the bridge 1, are each articulated at its upper part, by a hinge 13 disposed parallel to the vertical walls 5 (see Figures 5 and 6 ), to the corresponding lateral section 7.
  • cylinders 14 could be replaced by mittens or winches.
  • each pivoting lug 12 is internally reinforced by longitudinal metal rods 18, these rods being housed in channels 19 formed in the thickness of the pivoting lugs.
  • Each rod 18 is fixed at its front end in a sleeve 22 embedded in the corresponding lateral section 7.
  • each pivoting lug 12 comprises three rods 18, namely two parallel rods which are adjacent to its inner lateral face, which is situated on the side where the forces exerted by the earth and the weight of the trains running on the tracks. 2 are the largest, and a rod parallel and adjacent to the upper part of its outer side face.
  • the connecting wall 8 which holds the slope 3 on the width of the bridge 1, makes an angle of approximately 45 ° with the lateral section 7 of the upper slab 6.
  • the slope 3 is made with a horizontal plane an angle of the order of 33 ° to die at the intersection of the vertical wall 5 and the raft 4 and thus preventing landslide.
  • each vertical side wall 5 of the bridge 1 is extended at its lower part, forwards and backwards, by walls 20 intended to retain the lands in the quarter-cone-shaped zones constituting the rounded slopes 3 and to stiffen the raft 4.
  • the tracks 2 are interrupted and the breccia intended to receive the bridge is made in the slope 3, one carries out earthworks with the upper part of the edges opposite the gap to arrange for the front and back four housing 21 (see the figure 5 ) for receiving the ears 12, 12 'of the bridge 1.
  • the lugs 12 of the bridge 1 being raised in the waiting position (dotted line position on the figure 6 ), the bridge 1 is shifted in the direction of the arrow F of the figures 3 and 4 until he comes to take his final position in the gap.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Road Paving Structures (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Finger-Pressure Massage (AREA)

Abstract

The bridge has a bottom slab (4) supporting two side walls (5) connected by an upper paving slab (6). The paving slab includes two side sections (7) whose free ends are connected to the bottom slab by an inclined wall. Each side section extends beyond its junction with inclined wall and has two ears (12, 12`) that are articulated between a vertical position and a permanent position in the extension of the side sections.

Description

La présente invention concerne un pont destiné à ménager un passage sous une voie de circulation ferroviaire, routière ou autoroutière disposée en position surélevée sur un talus, et plus particulièrement un pont qui est construit d'un côté du talus, avant la réalisation d'une brèche dans celui-ci, et qui est conçu pour être déplacé par ripage jusqu'à sa mise en place dans la brèche, avant la remise en service de la voie de circulation qui n'est ainsi interrompue que pendant un laps de temps relativement court.The present invention relates to a bridge intended to provide a passage under a rail, road or motorway traffic lane arranged in an elevated position on an embankment, and more particularly a bridge which is built on one side of the embankment, before the realization of a a breach in the latter, which is designed to be moved by shifting until it is put in place in the breach, before the return to service of the lane which is thus interrupted only for a relatively short period of time .

Un tel pont, qui est connu d'après le brevet français FR 2749331 du même déposant, comprend un radier supportant deux parois latérales verticales reliées par une dalle supérieure, celle-ci comportant deux tronçons latéraux qui la prolongent au-delà des parois latérales. L'extrémité libre de chaque tronçon latéral est reliée au radier de support par une paroi de liaison inclinée qui retient les terres du talus.Such a bridge, which is known from the French patent FR 2749331 of the same depositor, comprises a raft supporting two vertical side walls connected by an upper slab, the latter comprising two lateral sections which extend beyond the side walls. The free end of each lateral section is connected to the supporting base by an inclined connecting wall which retains the lands of the slope.

Dans ce pont connu, la hauteur des parois latérales et la longueur des tronçons latéraux ont sensiblement la même valeur, de sorte que les parois de liaison inclinées, qui retiennent le talus sur la largeur du pont, font un angle de l'ordre de 45° avec un plan horizontal.In this known bridge, the height of the side walls and the length of the lateral sections have substantially the same value, so that the inclined connecting walls, which retain the slope over the width of the bridge, make an angle of the order of 45 ° with a horizontal plane.

Toutefois, comme une inclinaison de 45° du talus sur les côtés des parois de liaison inclinées risque d'entraîner un éboulement des terres, il convient, pour des raisons de stabilité, que le talus définitif fasse avec un plan horizontal un angle ne dépassant pas environ 33°.However, since an inclination of 45 ° of the slope on the sides of the inclined connecting walls may result in landslide, it is appropriate, for reasons of stability, that the final slope makes with a horizontal plane an angle not exceeding about 33 °.

A cet effet, il a été proposé de réaliser aux quatre coins du pont des premiers murets portés par les parois de liaison inclinées et se raccordant à la paroi verticale correspondante selon un angle par rapport à l'horizontale proche de 33°, et des seconds murets prolongeant les parois verticales du pont. On peut alors recharger, selon l'angle d'inclinaison désiré de 33°, les parties en forme de quart de cône constituant les arrondis du talus, la terre se trouvant ainsi maintenue par l'angle formé par deux murets adjacents.For this purpose, it has been proposed to make at the four corners of the bridge first walls carried by the inclined connecting walls and connected to the corresponding vertical wall at an angle relative to the horizontal close to 33 °, and second walls extending the vertical walls of the bridge. Depending on the desired angle of inclination of 33 °, the quarter-cone-shaped parts of the bank of the slope can be reloaded, the earth thus being held by the angle formed by two adjacent walls.

La solution ainsi proposée, si elle a prouvé son efficacité, présente cependant l'inconvénient de nécessiter des travaux supplémentaires de maçonnerie pour la réalisation des murets ainsi que des travaux de terrassement.The solution thus proposed, if it has proved its effectiveness, however, has the disadvantage of requiring additional work masonry for the realization of low walls and earthworks.

Pour remédier à cet inconvénient, la présente invention propose de prolonger chaque tronçon latéral de la dalle supérieure du pont, au-delà de sa jonction avec la paroi de liaison inclinée, de manière que le rapport de la longueur du tronçon latéral ainsi prolongé sur la hauteur de la paroi verticale soit de l'ordre de 3 sur 2. Dans ce cas, le talus, qui démarre à l'extrémité ainsi prolongée du tronçon latéral, présente en effet l'inclinaison désirée d'environ 33° permettant la tenue des terres.To remedy this drawback, the present invention proposes to extend each lateral section of the upper slab of the bridge, beyond its junction with the inclined connecting wall, so that the ratio of the length of the lateral section thus extended over the height of the vertical wall is of the order of 3 out of 2. In this case, the slope, which starts at the extended end of the lateral section, indeed has the desired inclination of about 33 ° for holding the land.

Les tronçons latéraux de la dalle supérieure comportent chacun deux oreilles parallèles s'étendant dans leur prolongement, ce qui est connu en soi de FR 2 774 710 .The lateral sections of the upper slab each comprise two parallel ears extending in their extension, which is known per se. FR 2,774,710 .

Avantageusement, les oreilles des deux tronçons latéraux de la dalle supérieure sont respectivement alignées les unes avec les autres.Advantageously, the ears of the two lateral sections of the upper slab are respectively aligned with each other.

Cette structure à oreilles permet ainsi d'augmenter la distance entre l'extrémité des tronçons latéraux ainsi prolongés et les parois verticales du pont, de façon à faire arriver le pied du talus, incliné à 33°, à l'intersection de chaque paroi verticale et du radier de support. Les premiers murets portés par les parois de liaison inclinées du pont connu peuvent donc être supprimés.This wing structure thus makes it possible to increase the distance between the end of the lateral sections thus extended and the vertical walls of the bridge, so as to arrive at the foot of the slope, inclined at 33 °, at the intersection of each vertical wall. and the support raft. The first walls carried by the inclined connecting walls of the known bridge can be deleted.

La structure à oreilles proposée ci-dessus nécessite toutefois la réalisation de terrassements dans les bords supérieurs ouverts du talus, pour le passage des oreilles lors du ripage du pont, puis l'exécution d'un remblaiement soigneux une fois l'ouvrage en place pour éviter les tassements ultérieurs.The above proposed wing structure requires, however, earthworks in the open upper edges of the slope, for the passage of the ears during the shifting of the bridge, then the execution of a thorough backfilling once the structure in place for avoid subsequent settlements.

Pour éviter ces terrassements et ce remblaiement, l'invention prévoit que l'une des oreilles de chaque tronçon latéral soit apte à pivoter entre une position d'attente dans laquelle elle est relevée et une position définitive dans laquelle elle est dans le prolongement du tronçon latéral correspondant, les oreilles pivotantes étant situées dans le prolongement du côté longitudinal de la dalle supérieure qui est situé vers l'avant en considérant le sens de ripage.To avoid these earthworks and this embankment, the invention provides that one of the ears of each lateral section is able to pivot between a waiting position in which it is raised and a final position in which it is in the extension of the section corresponding side, the pivoting lugs being located in the extension of the longitudinal side of the upper slab which is located forward considering the direction of shifting.

De préférence, les oreilles pivotantes sont articulées sur les tronçons latéraux de la dalle supérieure, au niveau d'une charnière parallèle aux parois latérales du pont, des moyens de commande tels que des vérins hydrauliques ou pneumatiques, des moufles ou des treuils étant interposés entre les oreilles pivotantes et les tronçons latéraux correspondants pour déplacer lesdites oreilles pivotantes entre leur position d'attente et leur position définitive.Preferably, the pivoting lugs are articulated on the lateral sections of the upper slab, at a hinge parallel to the side walls of the bridge, control means such as hydraulic or pneumatic cylinders, mittens or winches being interposed between the pivoting lugs and the corresponding lateral sections for moving said pivoting lugs between their waiting position and their final position.

Ainsi, après la réalisation du pont, les deux oreilles articulées, c'est-à-dire celles disposées vers l'avant dans le sens du ripage, seront relevées pendant le déplacement du pont, rabattues en fin de déplacement dans des logements appropriés ménagés dans les bords supérieurs avant du talus, et fixées dans cette position aux tronçons latéraux de la dalle supérieure.Thus, after completion of the bridge, the two hinged ears, that is to say those arranged forward in the direction of shifting, will be raised during the movement of the bridge, folded at the end of travel in appropriate housing arranged in the upper edges of the upper slope, and fixed in this position to the lateral sections of the upper slab.

Les oreilles arrière fixes viennent quant à elles s'engager en fin de déplacement du pont dans d'autres logements ménagés dans les bords arrière du talus.The fixed rear lugs come to engage at the end of displacement of the bridge in other accommodations in the rear edges of the slope.

De préférence, les oreilles pivotantes renferment des tiges métalliques reliées à des manchons noyés dans les tronçons latéraux correspondants de la dalle supérieure.Preferably, the pivoting lugs contain metal rods connected to sleeves embedded in the corresponding lateral sections of the upper slab.

Grâce à ces tiges, les oreilles pivotantes peuvent être reliées rigidement aux tronçons latéraux, ce qui permet de les solidariser au pont.Thanks to these rods, the pivoting lugs can be rigidly connected to the lateral sections, which allows them to be secured to the bridge.

Avantageusement, les tiges des oreilles pivotantes sont vissées dans les manchons des tronçons latéraux et logées dans des canaux ménagés dans lesdites oreilles et remplis de matières anti-corrosion avec vissage.Advantageously, the rods of the pivoting lugs are screwed into the sleeves of the lateral sections and housed in channels formed in said lugs and filled with anti-corrosion materials with screwing.

La mise en place de ces tiges peut être réalisée rapidement puisqu'il suffit de les enfiler dans les canaux, de préférence lorsque les oreilles pivotantes sont dans leur position d'attente, et de les visser dans les manchons lorsque lesdites oreilles pivotantes sont dans leur position définitive.The establishment of these rods can be done quickly since it is sufficient to put them in the channels, preferably when the pivoting ears are in their waiting position, and screw them into the sleeves when said pivoting ears are in their position. final position.

Selon une caractéristique importante de l'invention, les oreilles pivotantes comportent au moins deux tiges métalliques parallèles et adjacentes à leur face longitudinale intérieure.According to an important characteristic of the invention, the pivoting lugs comprise at least two parallel metal rods and adjacent to their inner longitudinal face.

Ainsi, les oreilles pivotantes peuvent parfaitement résister aux efforts auxquels la matière de remblaiement les soumet lors du passage de véhicules se déplaçant sur la voie de circulation.Thus, the pivoting lugs can withstand the forces to which the backfill material submits them during the passage of vehicles moving on the taxiway.

Selon l'invention, les oreilles pivotantes peuvent en outre comporter au moins une tige métallique parallèle et adjacente à la partie supérieure de leur face longitudinale extérieure.According to the invention, the pivoting lugs may further comprise at least one metal rod parallel to and adjacent to the upper part of their outer longitudinal face.

Ces autres tiges métalliques permettent d'augmenter encore la résistance des oreilles pivotantes aux efforts exercés sur elles par la matière de remblaiement lors du passage des véhicules.These other metal rods can further increase the resistance of the pivoting lugs to the forces exerted on them by the backfill material during the passage of vehicles.

Avantageusement, le radier du pont peut comporter deux prolongements latéraux qui s'étendent au-delà des parois latérales, les parois de liaison inclinées reliant les extrémités libres des tronçons latéraux de la dalle supérieure aux extrémités libres des prolongements latéraux correspondants du radier.Advantageously, the deck of the deck may comprise two lateral extensions which extend beyond the side walls, the inclined connecting walls connecting the free ends of the lateral sections of the upper slab at the free ends of the corresponding lateral extensions of the slab.

Cette disposition, qui augmente la distance entre la base de chaque paroi de liaison inclinée et la paroi verticale correspondante, permet de faire encore arriver le pied du talus incliné à 33° à l'intersection de la paroi verticale et du radier de support tout en autorisant une diminution de la longueur des oreilles.This arrangement, which increases the distance between the base of each inclined connecting wall and the corresponding vertical wall, makes it possible to still arrive at the foot of the inclined slope at 33 ° at the intersection of the vertical wall and the support raft while allowing a decrease in the length of the ears.

Un mode d'exécution de la présente invention sera décrit ci-après à titre d'exemple nullement limitatif en référence aux dessins schématiques annexés dans lesquels :

  • la figure 1 est une vue en coupe selon la ligne I-I de la figure 3, montrant un pont à oreilles, après ripage dans une brèche ménagée dans un talus portant deux voies ferrées ;
  • la figure 2 est une vue à échelle agrandie d'un détail de la figure 1, montrant plus particulièrement le mode de coopération du radier de support du pont à oreilles avec son radier de guidage ;
  • la figure 3 est une vue de dessus du pont à oreilles selon l'invention, après ripage dans la brèche du talus ;
  • la figure 4 est une vue en coupe selon la ligne IV-IV de la figure 3 ;
  • la figure 5 est une vue à échelle agrandie d'un détail de la figure 3, montrant une oreille pivotante du pont selon l'invention ;
  • la figure 6 est une vue en coupe selon la ligne VI-VI de la figure 5 ; et
  • la figure 7 est une vue en coupe selon la ligne VII-VII de la figure 5.
An embodiment of the present invention will be described hereinafter by way of non-limiting example with reference to the accompanying schematic drawings in which:
  • the figure 1 is a sectional view along line II of the figure 3 , showing a wing bridge, after shifting into a breach in a bank carrying two railroad tracks;
  • the figure 2 is an enlarged view of a detail of the figure 1 , showing more particularly the mode of cooperation of the support deck of the bridge of support with its guide raft;
  • the figure 3 is a top view of the wing bridge according to the invention, after shifting into the breach of the slope;
  • the figure 4 is a sectional view along line IV-IV of the figure 3 ;
  • the figure 5 is an enlarged view of a detail of the figure 3 showing a pivoting ear of the bridge according to the invention;
  • the figure 6 is a sectional view along the line VI-VI of the figure 5 ; and
  • the figure 7 is a sectional view along the line VII-VII of the figure 5 .

En référence aux figures 1 à 4, on a représenté un pont 1 destiné à permettre le franchissement, par le dessous, de deux voies de chemin de fer 2 situées sur un talus 3. Le pont 1 est construit d'une manière connue en soi sur un côté du talus, en regard du lieu de franchissement voulu de la voie ferrée, afin que celle-ci reste opérationnelle pendant la construction. Une fois la construction du pont 1 terminée, les voies ferrées 2 et le talus 3 sont respectivement interrompues et ouvert, après quoi le pont 1 est ripé dans la brèche ainsi ouverte tandis que les voies ferrées 2 sont rétablies sur le pont qui ménage un passage de circulation sous celles-ci.With reference to Figures 1 to 4 , there is shown a bridge 1 intended to allow the crossing, from below, two railway tracks 2 located on a slope 3. The bridge 1 is built in a manner known per se on one side of the slope, in view of the desired crossing point of the railway, so that it remains operational during construction. Once the construction of the bridge 1 has been completed, the railway tracks 2 and the embankment 3 are respectively interrupted and opened, whereupon the bridge 1 is slid into the breach thus opened while the railway tracks 2 are re-established on the bridge which provides a passage under these.

Le pont 1 est constitué par un cadre comprenant à sa partie inférieure un radier 4 supportant deux parois latérales verticales 5 qui sont reliées à leur extrémité supérieure par une dalle horizontale 6. La dalle 6 est prolongée de chaque côté, au-delà de la paroi verticale 5 correspondante, par un tronçon latéral 7 dont l'extrémité libre est reliée, par une paroi inclinée 8, à l'extrémité libre de prolongements latéraux 9 du radier de support 4. La paroi de liaison inclinée 8 fait avec le tronçon latéral 7 un angle de l'ordre de 45°.The bridge 1 is constituted by a frame comprising at its lower part a raft 4 supporting two vertical side walls 5 which are connected at their upper end by a horizontal slab 6. The slab 6 is extended on each side, beyond the wall corresponding vertical section 5, by a lateral section 7 whose free end is connected, by an inclined wall 8, to the free end of lateral extensions 9 of the support raft 4. The inclined connecting wall 8 is made with the lateral section 7 an angle of the order of 45 °.

Le radier de support 4 repose sur un radier fixe 10 qui assure son guidage lors de l'opération de ripage. Comme on le voit plus particulièrement sur la figure 2, des cornières métalliques complémentaires 11 et 11' sont respectivement incorporées aux radiers de support 4 et de guidage 10 avec interposition d'un matériau facilitant le glissement et absorbant les défauts de parallélisme.The support raft 4 rests on a fixed base 10 which ensures its guidance during the shifting operation. As we see more particularly on the figure 2 , complementary metal angles 11 and 11 'are respectively incorporated in the supporting racks 4 and guide 10 with interposition of a material facilitating sliding and absorbing defects of parallelism.

Chaque tronçon latéral 7 se prolonge par deux oreilles 12, 12' disposées symétriquement par rapport à l'axe longitudinal médian du pont 1, chaque oreille 12, 12' de l'un des tronçons latéraux 7 étant alignée avec l'oreille 12, 12' correspondante de l'autre tronçon latéral 7.Each lateral section 7 is extended by two lugs 12, 12 'arranged symmetrically with respect to the median longitudinal axis of the bridge 1, each lug 12, 12' of one of the lateral sections 7 being aligned with the lug 12, 12 corresponding to the other lateral section 7.

Les oreilles 12 disposées en amont, c'est-à-dire celles placées vers l'avant en regardant la flèche F des figures 3 et 4 indiquant le sens de ripage du pont 1, sont articulées chacune à sa partie supérieure, par une charnière 13 disposée parallèlement aux parois verticales 5 (voir les figures 5 et 6), au tronçon latéral 7 correspondant. Un vérin hydraulique 14, dont le cylindre est articulé sur une chape 15 solidaire du tronçon latéral 7 et dont la tige 16 est reliée à une chape 17 solidaire de l'oreille 12, commande le pivotement de cette dernière entre une position verticale d'attente (représentée en trait mixte sur la figure 6) et une position définitive (représentée en trait plein sur la même figure) dans le prolongement du tronçon latéral 7.The ears 12 arranged upstream, that is to say those placed forward looking at the arrow F of figures 3 and 4 indicating the direction of shifting of the bridge 1, are each articulated at its upper part, by a hinge 13 disposed parallel to the vertical walls 5 (see Figures 5 and 6 ), to the corresponding lateral section 7. A hydraulic cylinder 14, whose cylinder is articulated on a yoke 15 secured to the lateral section 7 and whose rod 16 is connected to a yoke 17 secured to the lug 12, controls the pivoting of the latter between a vertical position waiting (shown in dashed line on the figure 6 ) and a final position (shown in solid lines in the same figure) in the extension of the lateral section 7.

Bien entendu, les vérins 14 pourraient être remplacés par des moufles ou des treuils.Of course, the cylinders 14 could be replaced by mittens or winches.

Comme on l'a représenté sur les figures 5 à 7, chaque oreille pivotante 12 est renforcée intérieurement par des tiges métalliques longitudinales 18, ces tiges étant logées dans des canaux 19 ménagés dans l'épaisseur des oreilles pivotantes. Chaque tige 18 est fixée à son extrémité antérieure dans un manchon 22 noyé dans le tronçon latéral 7 correspondant.As shown on the Figures 5 to 7 each pivoting lug 12 is internally reinforced by longitudinal metal rods 18, these rods being housed in channels 19 formed in the thickness of the pivoting lugs. Each rod 18 is fixed at its front end in a sleeve 22 embedded in the corresponding lateral section 7.

Dans l'exemple représenté, chaque oreille pivotante 12 comporte trois tiges 18, à savoir deux tiges parallèles qui sont adjacentes à sa face latérale intérieure, qui est située du côté où les efforts exercés par les terres et le poids des trains circulant sur les voies ferrées 2 sont les plus grands, et une tige parallèle et adjacente à la partie supérieure de sa face latérale extérieure. Une fois les tiges 18 en position définitive dans leurs canaux 19 respectifs, on introduit avantageusement dans ces canaux un produit anti-corrosion. Enfin, on dépose les vérins 14.In the example shown, each pivoting lug 12 comprises three rods 18, namely two parallel rods which are adjacent to its inner lateral face, which is situated on the side where the forces exerted by the earth and the weight of the trains running on the tracks. 2 are the largest, and a rod parallel and adjacent to the upper part of its outer side face. Once the rods 18 in final position in their respective channels 19 is advantageously introduced into these channels an anti-corrosion product. Finally, the cylinders 14 are removed.

Ainsi qu'on l'a indiqué, et comme on le voit en particulier sur la figure 1, la paroi de liaison 8, qui retient le talus 3 sur la largeur du pont 1, fait un angle d'environ 45° avec le tronçon latéral 7 de la dalle supérieure 6. Toutefois, de chaque côté de la paroi de liaison 8, le talus 3 fait avec un plan horizontal un angle de l'ordre de 33° en venant mourir à l'intersection de la paroi verticale 5 et du radier 4 et en empêchant ainsi l'éboulement des terres. Cette disposition est rendue possible du fait que le départ de la partie supérieure du talus 3 se trouve reculé par rapport à la paroi verticale 5, ce recul étant obtenu d'une part par la présence des oreilles 12, 12' et, d'autre part, par celle des prolongements 9 du radier de support 4.As has been indicated, and as we see in particular on the figure 1 , the connecting wall 8, which holds the slope 3 on the width of the bridge 1, makes an angle of approximately 45 ° with the lateral section 7 of the upper slab 6. However, on each side of the connecting wall 8, the slope 3 is made with a horizontal plane an angle of the order of 33 ° to die at the intersection of the vertical wall 5 and the raft 4 and thus preventing landslide. This arrangement is made possible because the departure of the upper part of the slope 3 is retracted relative to the vertical wall 5, this recession being obtained on the one hand by the presence of the ears 12, 12 'and, on the other hand, part, by that of the extensions 9 of the support raft 4.

Comme on le voit en particulier sur les figures 3 et 4, chaque paroi latérale verticale 5 du pont 1 est prolongée à sa partie inférieure, vers l'avant et vers l'arrière, par des murets 20 destinés à retenir les terres dans les zones en forme de quart de cône constituant les arrondis du talus 3 et à rigidifier le radier 4.As can be seen in particular on figures 3 and 4 each vertical side wall 5 of the bridge 1 is extended at its lower part, forwards and backwards, by walls 20 intended to retain the lands in the quarter-cone-shaped zones constituting the rounded slopes 3 and to stiffen the raft 4.

Lorsque le pont 1 est construit, les voies ferrées 2 sont interrompues et la brèche destinée à recevoir le pont est réalisée dans le talus 3, on procède à des terrassements à la partie supérieure des bords en regard de la brèche pour ménager vers l'avant et vers l'arrière quatre logements 21 (voir la figure 5) destinés à recevoir les oreilles 12, 12' du pont 1. Les oreilles 12 du pont 1 étant relevées en position d'attente (position en trait mixte sur la figure 6), on procède au ripage du pont 1 dans la direction de la flèche F des figures 3 et 4 jusqu'à ce que celui-ci vienne prendre sa position définitive dans la brèche.When the bridge 1 is built, the tracks 2 are interrupted and the breccia intended to receive the bridge is made in the slope 3, one carries out earthworks with the upper part of the edges opposite the gap to arrange for the front and back four housing 21 (see the figure 5 ) for receiving the ears 12, 12 'of the bridge 1. The lugs 12 of the bridge 1 being raised in the waiting position (dotted line position on the figure 6 ), the bridge 1 is shifted in the direction of the arrow F of the figures 3 and 4 until he comes to take his final position in the gap.

Dans cette position, les oreilles arrière 12' viennent s'engager dans les logements arrière 21 des bords de l'ouverture. On introduit ensuite les barres d'armature 18 dans les canaux 19 des oreilles 12 et, à l'aide des vérins 14, on fait pivoter ces dernières jusqu'à leur position définitive horizontale dans les logements 21 correspondants. On visse ensuite l'extrémité interne des tiges 18 dans les manchons 22 (à taraudage intérieur) noyés dans les tronçons latéraux 7 correspondants et, après remplissage des canaux 19 avec de la matière anti-corrosion, on immobilise les tiges 18 en vissant un écrou 23 à leur extrémité externe libre. On procède ensuite au remblaiement des logements 21 des oreilles 12, 12'.In this position, the rear lugs 12 'engage in the rear housing 21 edges of the opening. Reinforcing bars 18 are then introduced into the channels 19 of the ears 12 and, with the aid of the cylinders 14, these latter are pivoted to their final horizontal position in the corresponding housings 21. Then screwing the inner end of the rods 18 in the sleeves 22 (internal thread) embedded in the corresponding lateral sections 7 and, after filling the channels 19 with anti-corrosion material, the rods 18 are immobilized by screwing a nut 23 at their free outer end. The lodgings 21 of the lugs 12, 12 'are then backfilled.

On voit donc que, grâce au caractère pivotant des oreilles 12 du pont 1, la mise en place de ce dernier par ripage peut s'effectuer sans avoir à effectuer préalablement, sur toute la largeur du bord supérieur de l'ouverture ménagée dans le talus 3, un terrassement qui serait sinon nécessaire pour le passage d'oreilles fixes identiques aux oreilles arrière 12'. Cela évite en plus, une fois le pont 1 dans sa position définitive, d'avoir à effectuer un remblaiement important et délicat à l'endroit de ce terrassement. Cette réduction sensible des opérations de terrassement et de remblaiement nécessaires permet une réduction des coûts et un gain de temps appréciable.It can thus be seen that, thanks to the pivoting nature of the lugs 12 of the bridge 1, the implementation of the latter by shifting can be done without having to perform beforehand, over the entire width of the upper edge of the opening in the slope. 3, an earthwork that would otherwise be necessary for the passage of fixed ears identical to the rear ears 12 '. This further avoids, once the bridge 1 in its final position, having to perform a large embankment and delicate at the location of this earthwork. This significant reduction in the necessary earthworks and backfilling operations reduces costs and saves valuable time.

Claims (7)

  1. Bridge for passage below a railway line, road or motorway (2) situated on an embankment (3), intended to be slid into place, comprising a bottom slab (4) supporting two side walls (5) connected by means of an upper slab (6) including two side sections (7) extending it beyond the side walls (5), each side section (7) of the upper slab (6) being connected to the bottom slab (4) by means of an inclined connecting wall (8) and including two parallel lugs (12, 12') extending it beyond its junction with the corresponding inclined wall (8), characterised in that one (12) of the lugs (12, 12') of each side section (7) is capable of pivoting between a ready position in which it is raised and a final position in which it is a continuation of the corresponding side section (7), the pivoting lugs (12) being a continuation of the longitudinal side of the upper slab (6) situated towards the front as viewed in the sliding direction,
  2. Bridge according to claim 1, characterised in that the pivoting lugs (12) are hinged to the side sections (7) of the upper slab (6) at a hinge (13) parallel to the side walls (5), control means (14) being interposed between the pivoting lugs (12) and the corresponding side sections (7) in order to move the said pivoting lugs (12) between their ready position and their final position.
  3. Bridge according to claim 1 or claim 2, characterised in that the pivoting lugs (12) contain metal rods (18) connected to sleeves (22) embedded in the corresponding side sections (7) of the upper slab (6).
  4. Bridge according to claim 3, characterised in that the rods (18) of the pivoting lugs (12) are screwed into the sleeves (22) of the side sections (7) and are housed in channels (19) formed in the said lugs (12) and filled with anti-corrosion material.
  5. Bridge according to claim 3 or claim 4, characterised in that the pivoting lugs (12) include at least two metal rods (18) parallel and adjacent to their inner longitudinal faces.
  6. Bridge according to claim 5, characterised in that the pivoting lugs (12) moreover include at least one metal rod (18) parallel and adjacent to the upper parts of their outer longitudinal faces.
  7. Bridge according to any one of the preceding claims, characterised in that the bottom slab (4) includes two side extensions (9) extending beyond the side walls (5), the inclined connecting walls (8) connecting the free ends of the side sections (7) of the upper slab (6) to the free ends of the corresponding side extensions (9) of the bottom slab (4).
EP06290069A 2005-01-12 2006-01-11 Bridge the upper slab of which comprises ears Active EP1681396B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0500309A FR2880638B1 (en) 2005-01-12 2005-01-12 BRIDGE WHERE THE UPPER SLAB CONTAINS EARS

Publications (3)

Publication Number Publication Date
EP1681396A2 EP1681396A2 (en) 2006-07-19
EP1681396A3 EP1681396A3 (en) 2006-10-25
EP1681396B1 true EP1681396B1 (en) 2010-05-05

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EP06290069A Active EP1681396B1 (en) 2005-01-12 2006-01-11 Bridge the upper slab of which comprises ears

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EP (1) EP1681396B1 (en)
AT (1) ATE467003T1 (en)
DE (1) DE602006014034D1 (en)
FR (1) FR2880638B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104099943B (en) * 2014-06-30 2016-05-04 中铁四局集团第四工程有限公司 Diaphram wall and discarded underground civil defense engineering intersection processing method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2704570B1 (en) * 1993-04-28 1995-07-21 Escota Device for strengthening the cantilevers of bridges and its method of implementation.
FR2749331B1 (en) * 1996-06-03 1998-09-11 Beauthier Jean Marie DEVICE FOR PERFORMING AN UNDERGROUND CROSSING UNDER A TRAFFIC LANE
FR2774710B1 (en) * 1998-02-09 2000-04-28 Vsl France DEVICE AND METHOD FOR ALLOWING THE REMOVAL OF A BATTERY SUPPORTING THE APRON OF A BRIDGE
JP2001032211A (en) * 1999-05-17 2001-02-06 Anderson Technology Kk Box girder structure of bridge having external cable, and building method of box girder
FR2839990B1 (en) * 2002-05-21 2004-07-09 Sncf WORK OF PREFABRICATED ART AND METHOD OF ESTABLISHING THE ART WORK
FR2850984B1 (en) * 2003-02-06 2005-11-04 Quille Entreprise METHOD, APPARATUS AND ARTWORK FOR REALIZING A NEW CIRCULATION PATH UNDER AN EXISTING TRACK RUN BY A TALUS

Also Published As

Publication number Publication date
FR2880638A1 (en) 2006-07-14
DE602006014034D1 (en) 2010-06-17
EP1681396A3 (en) 2006-10-25
ATE467003T1 (en) 2010-05-15
FR2880638B1 (en) 2008-07-11
EP1681396A2 (en) 2006-07-19

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