EP0687774B1 - Device for horizontally interconnecting guardrails or similar parts - Google Patents

Device for horizontally interconnecting guardrails or similar parts Download PDF

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Publication number
EP0687774B1
EP0687774B1 EP94401354A EP94401354A EP0687774B1 EP 0687774 B1 EP0687774 B1 EP 0687774B1 EP 94401354 A EP94401354 A EP 94401354A EP 94401354 A EP94401354 A EP 94401354A EP 0687774 B1 EP0687774 B1 EP 0687774B1
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EP
European Patent Office
Prior art keywords
block
reinforcement
pieces
pot
piston
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP94401354A
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German (de)
French (fr)
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EP0687774A1 (en
Inventor
Carlos De La Fuente
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Freyssinet International STUP SA
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Freyssinet International STUP SA
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Publication date
Priority to FR9302707A priority Critical patent/FR2702500B1/en
Priority to JP03708394A priority patent/JP3501413B2/en
Application filed by Freyssinet International STUP SA filed Critical Freyssinet International STUP SA
Priority to EP94401354A priority patent/EP0687774B1/en
Priority to DE1994606910 priority patent/DE69406910T2/en
Publication of EP0687774A1 publication Critical patent/EP0687774A1/en
Application granted granted Critical
Publication of EP0687774B1 publication Critical patent/EP0687774B1/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/08—Members specially adapted to be used in prestressed constructions
    • E04C5/12—Anchoring devices
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/10—Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
    • E01D19/103—Parapets, railings ; Guard barriers or road-bridges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
    • E01F15/02—Continuous barriers extending along roads or between traffic lanes
    • E01F15/04—Continuous barriers extending along roads or between traffic lanes essentially made of longitudinal beams or rigid strips supported above ground at spaced points
    • E01F15/0407—Metal rails
    • E01F15/0423—Details of rails

Definitions

  • Figure 2 shows on a smaller scale a section vertical cross section of a bridge safety barrier which comprises three superimposed horizontal rails implementing the invention.
  • this jaw Due to its orientation, this jaw is clamped against the frame and thus anchors it on the block 6 when it is biased towards the block 5 (arrow F in the drawing).

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Steps, Ramps, And Handrails (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Fluid-Damping Devices (AREA)

Description

L'invention est relative aux dispositifs pour relier horizontalement entre elles deux pièces allongées horizontalement destinées à former ensemble une portée continue, la liaison entre ces pièces remplissant les deux conditions suivantes :

  • en temps normal, des déplacements horizontaux mutuels relativement lents sont rendus possibles entre les deux pièces, déplacements tels que ceux dus aux déformations thermiques,
  • en cas d'application d'un choc sur l'une au moins des deux pièces, susceptible de solliciter brusquement à l'écartement ces deux pièces, celles-ci doivent être solidarisées instantanément entre elles par un effet de blocage qui interdit ladite séparation.
The invention relates to devices for connecting horizontally two elongated parts horizontally intended to form together a continuous span, the connection between these parts fulfilling the following two conditions:
  • in normal times, relatively slow mutual horizontal displacements are made possible between the two parts, displacements such as those due to thermal deformations,
  • in the event of a shock being applied to at least one of the two parts, capable of suddenly urging these two parts apart, they must be instantly joined together by a blocking effect which prohibits said separation.

L'invention s'applique plus particulièrement au cas où les forces F susceptibles de solliciter brusquement à l'écartement les deux pièces considérées sont relativement élevées, étant typiquement supérieures à une tonne : les pièces en question sont par exemple les lisses horizontales constituant des barrières de sécurité disposées en bordure d'un pont, au droit des joints de dilatation de ce pont.The invention applies more particularly to the case where the forces F liable to suddenly urge the spacing of the two parts considered are relatively high, being typically greater than one ton: the parts in question are, for example, the horizontal beams constituting barriers safety devices arranged at the edge of a bridge, in line with the expansion joints of this bridge.

Dans les modes de réalisation connus des dispositifs de liaison du genre en question, ces dispositifs sont conçus et dimensionnés de façon à encaisser eux-mêmes la totalité des forces F mises en jeu lors des chocs, de sorte qu'ils sont relativement encombrants, pesants et coûteux.In the known embodiments of connecting devices of the kind in question, these devices are designed and dimensioned so as to collect all the forces F involved in impacts themselves, so that they are relatively bulky, heavy and expensive.

L'invention a pour but, surtout, de rendre les dispositifs de liaison considérés tels qu'ils répondent mieux que jusqu'à ce jour aux différentes exigences de la pratique, notamment en ce qu'ils sont relativement économiques, légers et peu encombrants : en particulier, dans le cas où ils servent à relier entre elles des lisses constituées par des profilés creux, ils peuvent être logés à l'intérieur de ces profilés.The object of the invention is, above all, to make the connection devices considered to be such that they better meet the different requirements of practice to date, in particular in that they are relatively economical, light and space-saving: in particular, in the case where they serve to connect healds constituted by hollow sections, they can be housed inside these sections.

A cet effet, les dispositifs de liaison du genre en question selon l'invention, destinés à relier horizontalement entre elles deux pièces allongées horizontalement et disposées dans le prolongement l'une de l'autre, comprennent d'une façon connue en soi (voir par exemple la figure 7 de FR-A-2 667 631) un tronçon intermédiaire ayant un profil semblable à celui des deux pièces, monté à glissement doux entre ces deux pièces de façon à maintenir la continuité de la liaison tout en autorisant les variations de l'écartement mutuel des deux pièces et ils sont essentiellement caractérisés en ce qu'ils comprennent un premier bloc destiné à être solidarisé à l'une des pièces, un second bloc destiné à être solidarisé à l'autre pièce, une armature résistant à la traction traversant les deux blocs, des moyens pour ancrer en permanence une extrémité de l'armature sur le premier bloc vis-à-vis de ses sollicitations à la traction en direction du second bloc, un dispositif d'ancrage tronconique à clavettes contenu dans le second bloc et entourant une portion de l'armature de façon à pouvoir ancrer celle-ci sur ce second bloc vis-à-vis de ses sollicitations à la traction en direction du premier bloc, un dispositif à ressort porté par le second bloc, sollicitant axialement les clavettes dans le sens pour lequel elles libèrent l'armature, une tige prolongeant l'armature au-delà du second bloc, tige solidarisée avec un piston, un pot cylindrique entourant la portion de la tige qui comprend le piston de façon telle que ce dernier divise l'intérieur dudit pot en deux compartiments étanches reliés entre eux par un passage étranglé au niveau dudit piston, une masse de matériau incompressible et lentement déformable remplissant les deux compartiments du pot et le passage étranglé, un manchon solidaire du pot, interposé axialement entre celui-ci et la base élargie des clavettes et une bague solidaire du second bloc, propre à coopérer avec le manchon de façon à le maintenir, au repos, en sa position axialement juxtaposée contre les clavettes.To this end, the connecting devices of the kind in question according to the invention, intended to connect horizontally two elongated parts horizontally and arranged in the extension of one another, comprise in a manner known per se (see for example FIG. 7 of FR-A-2 667 631) an intermediate section having a profile similar to that of the two parts, mounted with gentle sliding between these two parts so as to maintain the continuity of the connection while allowing variations in the mutual spacing of the two parts and they are essentially characterized in that they comprise a first block intended to be secured to one of the pieces, a second block intended to be secured to the other piece, a frame resistant to traction passing through the two blocks, means for permanently anchoring one end of the armature on the first block with respect to its tensile stresses towards the second block, a di spositif of frustoconical anchoring with keys contained in the second block and surrounding a portion of the reinforcement so as to be able to anchor the latter on this second block with respect to its tensile stresses in the direction of the first block, a spring device carried by the second block, axially biasing the keys in the direction for which they release the frame, a rod extending the frame beyond the second block, rod secured to a piston, a cylindrical pot surrounding the portion of the rod which comprises the piston so that the latter divides the interior of said pot into two sealed compartments connected to each other by a constricted passage at said piston, a mass of incompressible and slowly deformable material filling the two compartments of the pot and the choked passage, a sleeve integral with the pot, axially interposed between it and the base enlarged keys and a ring integral with the second block, capable of cooperating with the sleeve so as to maintain it, at rest, in its position axially juxtaposed against the keys.

Dans des modes de réalisation avantageux, on a recours en outre à l'une et/ou à l'autre des dispositions suivantes :

  • l'armature est constituée par un toron lui-même composé par un faisceau de brins métalliques entourant un brin métallique central et la tige est constituée par un prolongement du seul brin central de ce toron, les brins périphériques de ce dernier étant interrompus au niveau du manchon,
  • le dispositif à ressort comprend un ressort hélicoïdal de compression entourant la portion d'armature disposée à l'entrée, du second bloc, disposée du côté du premier bloc, un étui cylindrique solidaire de ce second bloc et entourant ledit ressort et une douille épaulée interposée axialement entre le ressort et les extrémités étroites des clavettes,
  • les pièces à relier sont deux tronçons de lisse constitués par des profilés creux et les blocs sont fixés, notamment par vissage, à l'intérieur des extrémités concernées de ces deux tronçons.
In advantageous embodiments, use is also made of one and / or the other of the following arrangements:
  • the frame is constituted by a strand itself composed by a bundle of metal strands surrounding a central metal strand and the rod is constituted by an extension of the single central strand of this strand, the peripheral strands of the latter being interrupted at the level of the muff,
  • the spring device comprises a helical compression spring surrounding the armature portion disposed at the entrance to the second block, disposed on the side of the first block, a cylindrical case integral with this second block and surrounding said spring and an interposed shoulder bush axially between the spring and the narrow ends of the keys,
  • the parts to be connected are two sections of heald formed by hollow sections and the blocks are fixed, in particular by screwing, inside the ends concerned of these two sections.

L'invention comprend, mises à part ces dispositions principales, certaines autres dispositions qui s'utilisent de préférence en même temps et dont il sera plus explicitement question ci-après.The invention includes, apart from these main provisions, certain other provisions which are preferably used at the same time and which will be more explicitly discussed below.

Dans ce qui suit, l'on va décrire un mode de réalisation préféré de l'invention en se référant aux dessins ci-annexés d'une manière bien entendu non limitative.In what follows, a preferred embodiment of the invention will be described with reference to the accompanying drawings in a manner which is of course not limiting.

La figure 1, de ces dessins, montre en coupe horizontale selon I-I, figure 2, les extrémités de deux tronçons de lisses reliées entre elles selon l'invention.Figure 1 of these drawings shows in horizontal section along I-I, Figure 2, the ends of two heald sections connected together according to the invention.

La figure 2 montre à plus petite échelle une coupe transversale verticale d'une barrière de sécurité de pont qui comprend trois lisses horizontales superposées mettant en application l'invention.Figure 2 shows on a smaller scale a section vertical cross section of a bridge safety barrier which comprises three superimposed horizontal rails implementing the invention.

La figure 3 est une vue agrandie et plus détaillée d'une portion de la figure 1.FIG. 3 is an enlarged and more detailed view of a portion of FIG. 1.

Le mode de réalisation ici choisi à titre d'exemple concerne une barrière de sécurité 1 propre à équiper un bord d'un pont routier 2 en vue d'empêcher les véhicules circulant sur ce pont, ou les chargements de ces véhicules, de basculer accidentellement à l'extérieur du pont.The embodiment chosen here by way of example relates to a safety barrier 1 suitable for equipping an edge of a road bridge 2 with a view to preventing vehicles traveling on this bridge, or the loads of these vehicles, from accidentally tipping over. outside the bridge.

Cette barrière est ici constituée par trois lisses horizontales 3 constituées par des profilés creux de section carrée ou rectangulaire à angles arrondis et portées l'une au-dessus de l'autre par des piètements 4 reposant sur le tablier du pont.This barrier is here constituted by three horizontal rails 3 formed by hollow sections of square or rectangular section with rounded angles and carried one above the other by legs 4 resting on the bridge deck.

Chaque lisse 3 est elle-même composée par une suite de tronçons 31, 32 raccordés entre eux deux à deux par des dispositifs de liaison, lesquels doivent remplir les conditions suivantes :

  • ils assurent la continuité de la liaison entre les tronçons 31 et 32,
  • en temps normal, ils rendent possible la "respiration" de la lisse concernée, c'est-à-dire les déplacements mutuels relativement lents et de faible amplitude observables entre les deux tronçons, et dus notamment aux variations thermiques,
  • enfin, ils doivent solidariser brusquement et fermement ces deux tronçons dès que se manifeste sur l'un d'entre eux un choc tendant à l'écarter de l'autre.
Each stringer 3 is itself composed by a series of sections 3 1 , 3 2 connected together in pairs by connecting devices, which must fulfill the following conditions:
  • they ensure the continuity of the connection between the sections 3 1 and 3 2 ,
  • in normal times, they make possible the "breathing" of the beam concerned, that is to say the relatively slow mutual movements of small amplitude observable between the two sections, and due in particular to thermal variations,
  • finally, they must suddenly and firmly join these two sections as soon as one of them manifests a shock tending to separate it from the other.

A cet effet, on dispose à l'intérieur des deux extrémités, raccordées entre elles, des deux tronçons 31 et 32 un fourreau 30 ayant le même profil que chacune de ces extrémités, mais un peu plus petit de façon à rendre possibles les coulissements relatifs entre ce fourreau et ces extrémités sans pour autant interrompre la continuité générale de l'ensemble.For this purpose, there are inside the two ends, connected together, of the two sections 3 1 and 3 2 a sheath 30 having the same profile as each of these ends, but a little smaller so as to make possible the relative sliding between this sheath and these ends without interrupting the continuity general of the whole.

On fixe en outre respectivement dans ces deux extrémités deux blocs 5 et 6, notamment par vissage à l'aide de vis 7,8.In addition, two blocks 5 and 6 are fixed respectively in these two ends, in particular by screwing using screws 7.8.

Le bloc 5 est évidé par un trou cylindrique 9 propre à recevoir de façon quasi jointive une armature 10 présentant une forte résistance à la traction.The block 5 is hollowed out by a cylindrical hole 9 suitable for receiving in an almost contiguous manner a frame 10 having a high tensile strength.

Une extrémité de cette armature 10 est coiffée par un manchon filé 11 solidement fixé sur elle, et ce manchon filé 11 prend appui horizontalement sur la face transversale, du bloc 5, la plus éloignée du bloc 6, notamment à l'intérieur d'une cuvette 12 prévue à cet effet.One end of this frame 10 is capped by a spun sleeve 11 firmly fixed on it, and this spun sleeve 11 is supported horizontally on the transverse face of block 5, the most distant from block 6, in particular inside a bowl 12 provided for this purpose.

Ledit manchon 11 est avantageusement solidarisé avec le bloc 5 à l'aide d'un étui cylindrique 31 qui l'enveloppe et qui est vissé sur ce bloc.Said sleeve 11 is advantageously secured to the block 5 using a cylindrical case 31 which envelops it and which is screwed onto this block.

Le bloc 6 est également évidé par un alésage coaxial au trou 9, mais comportant cette fois-ci une portion cylindrique 13 de diamètre supérieur à celui du trou 9, prolongée à son extrémité la plus éloignée du bloc 5 par un alésage tronconique 14 divergeant vers l'extérieur.The block 6 is also hollowed out by a bore coaxial with the hole 9, but this time comprising a cylindrical portion 13 of diameter greater than that of the hole 9, extended at its end furthest from the block 5 by a frustoconical bore 14 diverging towards outside.

Cet alésage tronconique 14 contient une pluralité de clavettes 15 destinées à former ensemble un mors tronconique fendu entourant l'armature 10.This tapered bore 14 contains a plurality of keys 15 intended to form together a split tapered jaw surrounding the frame 10.

Du fait de son orientation, ce mors est serré contre l'armature et ancre ainsi celle-ci sur le bloc 6 lorsqu'il est sollicité vers le bloc 5 (flèche F sur le dessin).Due to its orientation, this jaw is clamped against the frame and thus anchors it on the block 6 when it is biased towards the block 5 (arrow F in the drawing).

Au contraire, il libère l'armature lorsqu'il est sollicité en sens inverse (flèche G).On the contrary, it releases the armature when it is pressed in the opposite direction (arrow G).

On prévoit en outre des moyens pour solliciter axialement les clavettes 15, par rapport au bloc 6 :

  • en permanence dans le sens de la flèche G, de manière à rendre normalement libres les déplacements axiaux de l'armature 10 par rapport audit bloc 6, et donc les "respirations" normales de la lisse 3,
  • et brusquement dans le sens de la flèche F, dès manifestement d'un effort tendant à écarter axialement l'un de l'autre les deux tronçons 31 et 32 constitutifs de la lisse 3.
Means are also provided for axially biasing the keys 15, relative to the block 6:
  • permanently in the direction of arrow G, so as to make the axial displacements of the armature 10 relative to said block 6 normally free, and therefore the normal "breaths" of the arm 3,
  • and suddenly in the direction of arrow F, obviously from an effort tending to separate axially from each other the two sections 3 1 and 3 2 constituting the heddle 3.

La première partie de ces moyens comprend :

  • un ressort hélicoïdal de compression 16 (figure 3) entourant la portion, de l'armature 10, qui se trouve à l'entrée du bloc 6, c'est-à-dire à proximité de sa face disposée du côté du bloc 5,
  • un étui cylindrique 17, solidaire du bloc 6 et entourant le ressort 16 et donc le tronçon d'armature entouré par ce ressort, une extrémité de cet étui 17 étant extérieurement filetée et vissée dans un alésage fileté complémentaire 18 du bloc et son autre extrémité constituant un fond perforé sur lequel prend appui le ressort 16,
  • et une douille épaulée 19 interposée axialement entre l'autre extrémité du ressort 16 et les bases étroites des clavettes 15, ladite douille étant logée avec jeu dans l'alésage cylindrique 13.
The first part of these means includes:
  • a helical compression spring 16 (FIG. 3) surrounding the portion of the frame 10, which is located at the entrance to the block 6, that is to say near its face disposed on the side of the block 5,
  • a cylindrical case 17, integral with the block 6 and surrounding the spring 16 and therefore the frame section surrounded by this spring, one end of this case 17 being externally threaded and screwed into a complementary threaded bore 18 of the block and its other end constituting a perforated bottom on which the spring 16 bears,
  • and a stepped sleeve 19 interposed axially between the other end of the spring 16 and the narrow bases of the keys 15, said sleeve being housed with play in the cylindrical bore 13.

L'armature 10 est ici un toron métallique constitué par un faisceau de brins périphériques torsadés 101 entourant un brin ou âme centrale 102.The frame 10 is here a metal strand constituted by a bundle of twisted peripheral strands 10 1 surrounding a central strand or core 10 2 .

A sa sortie du bloc 6, les brins périphériques 101 sont coupés et seul le brin central 102 prolonge l'armature 10 au-delà du bloc 6, dans le sens de la flèche G.At its exit from block 6, the peripheral strands 10 1 are cut and only the central strand 10 2 extends the armature 10 beyond block 6, in the direction of arrow G.

Ce brin 102 est solidarisé avec un piston 20 et une portion dudit brin, comprenant le piston 20, est entourée par un pot cylindrique 21 agencé de la façon suivante :

  • le piston 20 divise le volume intérieur au pot 21 en deux compartiments étanches A et B qui sont réunis entre eux par un passage étranglé 22 au niveau dudit piston,
  • les deux extrémités du pot 21 forment des fonds perforés 23, 24 traversés de façon étanche par le brin 102 constituant "tige de piston", l'étanchéité des traversées de ces fonds par cette tige étant assurée à l'aide de joints toriques 25, 26,
  • les deux compartiments A et B ainsi que le passage étranglé 22 sont remplis par un matériau M pâteux, plastique ou huileux dont le volume global est invariable, mais qui est lentement déformable de façon à rendre possibles les déplacements lents du piston 20 dans le pot 21, moyennant un refoulement à très petite vitesse du matériau considéré à travers l'étranglement 22, les déplacements rapides dudit matériau dans ledit étranglement étant par contre impossibles.
This strand 10 2 is secured to a piston 20 and a portion of said strand, comprising the piston 20, is surrounded by a cylindrical pot 21 arranged as follows:
  • the piston 20 divides the volume inside the pot 21 into two sealed compartments A and B which are joined together by a throttled passage 22 at the level of said piston,
  • the two ends of the pot 21 form perforated bottoms 23, 24 tightly crossed by the strand 10 2 constituting "piston rod", the sealing of the crossings of these bottoms by this rod being ensured by means of O-rings 25, 26,
  • the two compartments A and B as well as the constricted passage 22 are filled with a pasty, plastic or oily material M whose overall volume is invariable, but which is slowly deformable so as to make possible slow movements of the piston 20 in the pot 21 , by means of a very low speed discharge of the material considered through the throttle 22, the rapid displacements of said material in said throttle being on the other hand impossible.

Le fond 24, du pot 21, disposé du côté des blocs est prolongé par un manchon 27 solidarisé avec lui, manchon terminé à son extrémité la plus éloignée dudit fond 24 par un bourrelet annulaire 28.The bottom 24 of the pot 21, disposed on the side of the blocks, is extended by a sleeve 27 secured to it, sleeve terminated at its end furthest from said bottom 24 by an annular bead 28.

L'extrémité de grand diamètre de l'alésage tronconique 14 évidé dans le bloc 6 est prolongée dans le sens de la flèche G par un alésage cylindrique fileté 29 dans lequel est vissée une bague épaulée 30 propre, d'une part, à limiter la course des clavettes 15 dans ledit sens de la flèche G et, d'autre part, à entourer le bourrelet 28 de façon à le maintenir appliqué axialement contre les grandes bases de ces clavettes 15.The large diameter end of the frustoconical bore 14 hollowed out in the block 6 is extended in the direction of the arrow G by a threaded cylindrical bore 29 into which is screwed a shouldered ring 30 which, on the one hand, limits the stroke of the keys 15 in said direction of the arrow G and, on the other hand, to surround the bead 28 so as to keep it applied axially against the large bases of these keys 15.

On voit encore sur la figure 3 un capuchon 31 qui coiffe le fond 23, du pot 21, le plus éloigné du bloc 6, ainsi que l'extrémité correspondante de la tige de piston 102 traversant ce fond 23, ce qui assure ainsi la fermeture étanche dudit fond.We still see in Figure 3 a cap 31 which covers the bottom 23 of the pot 21, the furthest from the block 6, as well as the corresponding end of the piston rod 10 2 passing through this bottom 23, which thus ensures the tight closure of said bottom.

Le fonctionnement du dispositif de liaison ainsi décrit est le suivant.The operation of the connection device thus described is as follows.

En temps normal, c'est-à-dire tant qu'aucune sollicitation brusque n'est exercée sur l'un des deux tronçons 31, 32 par rapport à l'autre dans le sens de leur écartement relatif, la détente du ressort 16 a pour effet de repousser le mors 15 dans le sens de la flèche G, par l'intermédiaire de la bague 19, contre le bourrelet 28.In normal times, that is to say as long as no sudden stress is exerted on one of the two sections 3 1 , 3 2 relative to the other in the direction of their relative spacing, the relaxation of the spring 16 has the effect of pushing the jaw 15 in the direction of the arrow G, by through the ring 19, against the bead 28.

L'armature 20 est alors libre de se déplacer par rapport au bloc 6 et les déplacements relatifs des deux blocs 5 et 6, ainsi que ceux des deux tronçons 31 et 32, sont rendus possibles moyennant des déplacements lents du piston 20 dans le pot 22, qui font intervenir des refoulements progressifs de petits volumes du matériau M à travers le passage étranglé 22.The frame 20 is then free to move relative to the block 6 and the relative movements of the two blocks 5 and 6, as well as those of the two sections 3 1 and 3 2 , are made possible by means of slow movements of the piston 20 in the pot 22, which involve progressive upsets of small volumes of material M through the throttled passage 22.

Dès qu'une forte sollicitation horizontale à l'écartement est exercée sur l'un des deux tronçons 31 et 32 par rapport à l'autre, la portion de l'armature 10 qui traverse le bloc 6 est brusquement sollicitée vers le bloc 5 dans le sens de la flèche F, ainsi que son prolongement 102 et que le piston 20.As soon as a strong horizontal stress at the spacing is exerted on one of the two sections 3 1 and 3 2 relative to the other, the portion of the frame 10 which passes through the block 6 is suddenly biased towards the block 5 in the direction of arrow F, as well as its extension 10 2 and that the piston 20.

Les déformations possibles du matériau M étant trop lentes pour permettre son refoulement brusque dans le passage étranglé 22, le piston 20 peut alors être considéré comme solidarisé avec le pot 21, de sorte que ce pot 21 est lui-même sollicité dans le sens de la flèche F et repousse le mors 15 dans son logement tronconique 14, en lui faisant serrer l'armature 10.The possible deformations of the material M being too slow to allow its sudden backflow into the throttled passage 22, the piston 20 can then be considered as being secured to the pot 21, so that this pot 21 is itself biased in the direction of the arrow F and pushes the jaw 15 back into its frustoconical housing 14, making it tighten the frame 10.

Cette armature 10 est donc brusquement solidarisée avec le bloc 6, et en définitive avec le tronçon 31 de sorte que l'écartement mutuel des deux tronçons 31 et 32 de la lisse 3 est rendu impossible.This frame 10 is therefore suddenly secured to the block 6, and ultimately with the section 3 1 so that the mutual spacing of the two sections 3 1 and 3 2 of the heddle 3 is made impossible.

On observe donc automatiquement et instantanément une solidarisation extrêmement efficace des deux tronçons 31 et 32.We therefore observe automatically and instantaneously an extremely effective joining of the two sections 3 1 and 3 2 .

Il est à noter que cette solidarisation, qui fait intervenir la forte résistance à la traction de l'armature 10, est obtenue moyennant une simple sollicitation axiale du mors 15, mettant en jeu un effort extrêmement faible transmis de l'armature 10 au mors 15 par l'intermédiaire de la tige de piston 102, du piston 22, du matériau M, du pot 21 et du manchon 27.It should be noted that this joining, which involves the high tensile strength of the frame 10, is obtained by simple axial biasing of the jaw 15, bringing into play an extremely low force transmitted from the frame 10 to the jaw 15 by means of the piston rod 10 2 , the piston 22, the material M, the pot 21 and the sleeve 27.

A titre illustratif, cette sollicitation axiale peut mettre en jeu des efforts qui se chiffrent simplement à quelques dizaines de kilogrammes alors que les efforts d'écartement mutuel auxquels sont soumis les deux tronçons 31 et 32 et auxquels s'oppose l'armature 10 peuvent être de l'ordre de plusieurs tonnes.By way of illustration, this axial stress may involve forces which simply amount to a few tens of kilograms while the mutual spacing forces to which the two sections 3 1 and 3 2 are subjected and to which the armature 10 is opposed may be of the order of several tonnes.

En définitive, le blocage instantané de l'armature 10 est ici obtenu par un effort réduit de "pilotage", cet effort, qui se traduit par la solidarisation de l'armature 10 avec le bloc 6 par l'intermédiaire du mors 15, mettant simplement en oeuvre une sollicitation dudit mors 15 à l'enfoncement axial dans son logement tronconique.Ultimately, the instantaneous blocking of the frame 10 is here obtained by a reduced effort of "piloting", this effort, which results in the joining of the frame 10 with the block 6 via the jaw 15, putting simply implement a biasing of said jaw 15 to axial insertion into its frustoconical housing.

En suite de quoi, et quel que soit le mode de réalisation adopté, on obtient finalement un dispositif de liaison dont la constitution, le fonctionnement et les avantages résultent suffisamment de ce qui précède.As a result of which, and whatever the embodiment adopted, a connection device is finally obtained, the constitution, operation and advantages of which result sufficiently from the above.

Comme il va de soi, et comme il résulte d'ailleurs déjà de ce qui précède, l'invention ne se limite nullement à ceux de ses modes d'application et de réalisation qui ont été plus spécialement envisagés ; elle en embrasse, au contraire, toutes les variantes, notamment celles où les pièces allongées horizontalement à relier mutuellement seraient autres que des tronçons de lisses, étant par exemple les tronçons successifs constituant le tablier d'un pont de chemin de fer, tronçons qu'il convient d'ancrer solidement les uns sur les autres lors de sollicitations horizontales relatives brusques telles que celles pouvant être engendrées par le freinage de véhicules ferroviaires.As goes without saying, and as it already follows from the above, the invention is in no way limited to those of its modes of application and embodiments which have been more especially envisaged; on the contrary, it embraces all variants thereof, in particular those in which the horizontally elongated parts to be connected to each other would be other than sections of heddles, being for example the successive sections constituting the deck of a railway bridge, sections which it is advisable to anchor securely one on the other during sudden relative horizontal stresses such as those which can be generated by the braking of railway vehicles.

Claims (4)

  1. Device for connecting together horizontally two pieces (31, 32) which are extended horizontally and disposed in the prolongation of one another, the said device comprising an intermediate length (30) having a profile similar to that of the two pieces and mounted for smooth sliding between the said two pieces in such a way as to maintain the continuity of the connection while at the same time permitting variations in the mutual gap between the two pieces, characterised in that it comprises a first block (5) intended to be rendered integral with one of the pieces (31), a second block (6) intended to be rendered integral with the other piece (32), a traction-resistant reinforcement (10) passing through the two blocks, means (11) for permanently anchoring one end of the reinforcement on the first block in respect of its tensile stresses in the direction of the second block, a truncated cone-shaped anchoring device (15) with cotters which is contained in the second block and surrounds a portion of the reinforcement in such a way as to be able to anchor the said reinforcement on the said second block wich regard to its tensile stresses in the direction of the first block, a device (16-19) with a spring, which device is carried by the second block and axially stresses the cotters in the direction (G) in respect of which they release the reinforcement, a rod (102) prolonging the reinforcement beyond the second block, which rod is rendered integral with a piston (20), a cylindrical pot (21) surrounding that portion of the rod which comprises the piston in such a way that the said piston divides the interior of the said pot into two leak-proof compartments connected together by a constricted passage (22) level with the said piston, a mass of incompressible and slowly deformable material filling the two compartments of the pot and the constricted passage, a sleeve (27) integral with the pot and interposed axially between the latter and the widened base of the cotters (15) and a collar (29) which is integral with the second block and is adapted to cooperate with the sleeve (27) in such a way as to keep it, when at rest, in its position which is axially juxtaposed against the cotters.
  2. Connecting device according to claim 1, characterised in that the reinforcement is constituted by a strand (10) which is itself made up of a bundle of metal plies (101) surrounding a central metal ply (102), and in that the rod is constituted by a prolongation of the single central ply of the said strand, the peripheral plies (101) of the latter being interrupted level with the sleeve (27).
  3. Connecting device according to any one of the preceding claims, characterised in that the device with a spring comprises a helicoidal compression spring (16) surrounding that portion of the reinforcement which is disposed an that entrance to the second block (6) which is disposed on the same side as the first block (5), a cylindrical case (17) integral with the said second block and surrounding the said spring, and a shouldered socket (19) interposed axially between the spring and the narrow ends of the cotters (15).
  4. Connecting device according to any one of the preceding claims, characterised in that the pieces to be connected are two lengths of rail (31, 32) constituted by hollow profiles, and in that the blocks (5, 6) are fixed, in particular by screwing, inside the relevant ends of the said two lengths.
EP94401354A 1993-03-09 1994-06-16 Device for horizontally interconnecting guardrails or similar parts Expired - Lifetime EP0687774B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR9302707A FR2702500B1 (en) 1993-03-09 1993-03-09 Improvements to devices for horizontally connecting safety rails or the like.
JP03708394A JP3501413B2 (en) 1993-03-09 1994-03-08 Device for parallel connection between safety railings or similar
EP94401354A EP0687774B1 (en) 1993-03-09 1994-06-16 Device for horizontally interconnecting guardrails or similar parts
DE1994606910 DE69406910T2 (en) 1994-06-16 1994-06-16 Device for horizontally connecting guardrails or similar parts

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9302707A FR2702500B1 (en) 1993-03-09 1993-03-09 Improvements to devices for horizontally connecting safety rails or the like.
EP94401354A EP0687774B1 (en) 1993-03-09 1994-06-16 Device for horizontally interconnecting guardrails or similar parts

Publications (2)

Publication Number Publication Date
EP0687774A1 EP0687774A1 (en) 1995-12-20
EP0687774B1 true EP0687774B1 (en) 1997-11-19

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EP94401354A Expired - Lifetime EP0687774B1 (en) 1993-03-09 1994-06-16 Device for horizontally interconnecting guardrails or similar parts

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EP (1) EP0687774B1 (en)
JP (1) JP3501413B2 (en)
FR (1) FR2702500B1 (en)

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AUPN524895A0 (en) * 1995-09-05 1995-09-28 Kinabalu Investments Pty Ltd Barriers
FR2983218B1 (en) 2011-11-30 2014-01-24 Ecer SYSTEM FOR CONNECTING SECURITY BARRIER SLIDING PIECES FOR CIRCULATION PATHS AND SAFETY BARRIER EQUIPPED WITH SUCH A SYSTEM.
GB2497811A (en) * 2011-12-22 2013-06-26 Versco Ltd A connector for forming a movement joint between vehicle restraint or barrier members
ITUB20150967A1 (en) * 2015-05-29 2016-11-29 Ticopter S R L FIXING DEVICE FOR GUARDRAIL AND METHOD OF JOINING PORTIONS OF GUARDRAIL USING THE SAID DEVICE.
CN107165096A (en) * 2017-06-27 2017-09-15 包头北方安全防护装备制造有限公司 Cushion bumper guardrail and its avoiding collision
CN107905103A (en) * 2017-10-26 2018-04-13 柳州欧维姆机械股份有限公司 A kind of prestress anchorage system and its construction method with compression spring
CN108560416B (en) * 2018-04-23 2020-09-22 永嘉县园林绿化有限公司 Liftable guardrail on municipal bridge
CN109914698A (en) * 2019-04-11 2019-06-21 通威股份有限公司 A kind of Extrusion anchor ground tackle
CN111255176A (en) * 2020-01-21 2020-06-09 储少铉 Auxiliary device for ensuring service life of reinforcing steel bar in use process
CN113428252B (en) * 2021-08-17 2022-07-12 深圳市人工智能与机器人研究院 Cable climbing robot

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US3693940A (en) * 1970-12-08 1972-09-26 Menasco Mfg Co Energy absorbing barrier post assembly
BE826790A (en) * 1975-03-18 1975-07-16 RAILING REINFORCEMENT DEVICE FOR WORKS OF ART
DE3206167C2 (en) * 1981-02-28 1983-11-17 Hein, Lehmann AG, 4000 Düsseldorf Device for guiding a safety rope within a multi-part railing
FR2521610A1 (en) * 1982-02-12 1983-08-19 Routier Equip Sa Safety barrier for roads - comprises cable clamped between two parts which constitute tubular rail
DE3610983A1 (en) * 1986-04-02 1987-10-08 Hans Peter Roesgen RAILINGS, ESPECIALLY AS SAFETY RAILS FOR BREASTS, STREET BRIDGES AND THE LIKE
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Also Published As

Publication number Publication date
JP3501413B2 (en) 2004-03-02
JPH07119118A (en) 1995-05-09
EP0687774A1 (en) 1995-12-20
FR2702500B1 (en) 1995-06-02
FR2702500A1 (en) 1994-09-16

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