EP0616079A1 - Process and apparatus for placing parallel wire strands in cable-stayed bridges - Google Patents

Process and apparatus for placing parallel wire strands in cable-stayed bridges Download PDF

Info

Publication number
EP0616079A1
EP0616079A1 EP94400572A EP94400572A EP0616079A1 EP 0616079 A1 EP0616079 A1 EP 0616079A1 EP 94400572 A EP94400572 A EP 94400572A EP 94400572 A EP94400572 A EP 94400572A EP 0616079 A1 EP0616079 A1 EP 0616079A1
Authority
EP
European Patent Office
Prior art keywords
strand
cable
cage
strands
carriage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP94400572A
Other languages
German (de)
French (fr)
Other versions
EP0616079B1 (en
Inventor
Jérôme Stubler
Raymond Chastagnol
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Freyssinet International STUP SA
Original Assignee
Freyssinet International STUP SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Freyssinet International STUP SA filed Critical Freyssinet International STUP SA
Publication of EP0616079A1 publication Critical patent/EP0616079A1/en
Application granted granted Critical
Publication of EP0616079B1 publication Critical patent/EP0616079B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D11/00—Suspension or cable-stayed 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
    • E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
    • 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

Definitions

  • the invention relates to guy lines intended to equip guyed bridges by connecting the pylons of these bridges to their decks, guy wires constituted by multiple strands juxtaposed side by side, each of these strands being itself preferably of the "individually protected" type. , that is to say constituted by a bundle of parallel or twisted metal wires housed in a continuous sheath with the interposition of a protective product.
  • guy wires of the kind in question consists in pulling obliquely, in the direction of its axis, said guy cable previously manufactured, that is to say already composed of all of its constituent strands juxtaposed side by side. side, using a system like cable cars.
  • a carrier cable is stretched beforehand between a high point of the support pylon and the deck and a hooking member is rolled on this cable, by means of an appropriate undercarriage, to which the head or high end guy line.
  • the object of the invention is, above all, to remedy these various drawbacks.
  • mounting devices of the kind in question they are essentially characterized in that they comprise a guide cage for the strands and the traction cable, composed of a succession of rigid stirrups connected together by cables, each bracket including an arch and an easily removable lower closing bar.
  • 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.
  • Figure 1 of these drawings shows very schematically the general principle of mounting a guy line according to the invention.
  • Figure 2 shows in schematic perspective and on a larger scale a portion of the corresponding mounting device.
  • Figure 3 shows on an even larger scale a cross section of the same device.
  • Figure 4 also shows on a larger scale and in perspective view a component of this device.
  • FIG. 5 very schematically shows a particular phase of mounting guy lines, also in accordance with the invention.
  • Figure 6 schematically shows in plan a portion of a cable-stayed bridge under construction comprising a mounting device according to the invention.
  • Each of the shrouds 3 is constituted by a plurality of independent strands, that is to say that can be mounted and tensioned independently of each other and even, in some cases, replaced in isolation.
  • Each strand 3 may be constituted by a large wire, but it is preferably composed of a central core surrounded by a plurality of contiguous wires, generally six in number, wound helically around said core, each wire as well as the the core being advantageously surface protected, for example by galvanization, and the resulting twisted assembly itself being surrounded by a tight protective sheath, generally made of plastic, with possibly the interposition of a suitable protective binder such as petroleum wax.
  • a suitable protective binder such as petroleum wax.
  • the number of strands 4 making up the same stay 3 is several tens.
  • Each stirrup 5 is constituted by a hoop 7, the base of which is closed by a horizontal bar 8 that is easily removable.
  • the cables 6 are preferably three in number, then being attached to each arch 7, respectively at its apex C and at its two feet D and E.
  • the distance between the successive stirrups 5 is generally between 5 and 10 meters, so that each "cage" comprises several tens of stirrups.
  • the cage serves to contain, on the one hand, a traction cable 9 and, on the other hand, at least one wire and preferably two wires 10 and 11 suitable for serving as guide rails for at least one carriage 12.
  • Each stirrup 5 internally comprises, in the vicinity of each end of the bar 8 constituting its base, two tabs 13, 14 forming with the contiguous portions of the stirrup two eyelets with a constricted opening.
  • Each of these eyelets is crossed by one of the wires 10,11.
  • the carriage 12 is delimited laterally by two tubular rings 15 each traversed by one of the wires 10 and 11 and the arrangements and respective dimensions of these rings and of the above eyelets are such that the former can easily penetrate into the latter: the respective ranges of these rings and eyelets suitable for coming axially into contact have all desirable ramps (not shown) to make possible and facilitate the introduction of the former into the latter.
  • the carriage 12 is fixed at an intermediate point of the traction cable 9 and the head of at least one strand 4 is hooked on said carriage in an easily detachable manner, using appropriate means, for example by its clamping between the chassis of said carriage 12 and a jaw 19 screwed onto this chassis.
  • each strand 4 constituting the head of this strand, projects upwards beyond the carriage 12.
  • the head of at least one strand 4 is then hung on the carriages - the number of strands 4 considered being equal to two in the embodiment illustrated - or more precisely one end of at least one continuous cable unwound in particular from a reel 15 with a horizontal axis and capable of forming the desired strand after unwinding and cutting.
  • the rings 15 of the carriages then pass through the above-defined eyelets of the stirrups 5 and the drawn strands 4 successively pass through these stirrups 5 by sliding along their lower bars 8.
  • the carriage 12 continues to advance upwards, which continues the introduction of the head of the strand 4 into its anchoring jaw.
  • This anchoring has the effect of juxtaposing laterally each new strand 4 against the strand 41 previously placed and tensioned, which is made possible by the fact that all the strands, including the first, are arranged inside the cage subsequently formed by hoops 5.
  • the carriage 12 is then lowered back empty to the bottom of the cage, as well as the carriage 20, previously reassembled on its rails and re-attached to said cable.
  • the carriages are again hitched to the head of at least one new strand and it is put in place as for the previous ones, and so on until the last strand: the shroud is then completed.
  • the cage can then be recovered by sliding it along the finished stay towards the lower end of the latter, then by opening each stirrup lower by at least partial disassembly of its bar 8.
  • the carriage 12 is also used as above to hoist the first strand 4'1 to the vicinity of point A relating to the "previous shroud", but instead of anchoring the head of this strand at said level point A, it is anchored at the higher level of point A ', to which the new stay must be anchored.
  • This elevation does not pose a major problem, because the height A, A ′ is small and the weight of a single strand is relatively low.
  • the clearance in question of the cage out of the finished stay is made possible by the easy removable of the bars 8: when these bars are separated, or even separated, from the corresponding arches 7, these are open downwards and can therefore be released from the shroud which they overlap by simple lifting.
  • FIG. 6 another improvement has been illustrated applicable to a cable-stayed bridge for which the oblique stay cables which connect the deck 1 to one of the faces of a pylon 2 are not in the form of a longitudinal vertical sheet. single or two such parallel sheets, but in the form of two sheets N1 and N vertical vertical or substantially vertical divergent from the pylon and forming together at least approximately a dihedral with a vertical axis and small opening.
  • the traction cable 9 is made to follow a closed circuit having the shape of an isosceles triangle AB1B2 having two large equal sides AB1, AB2 which extend respectively along the axes of the two shrouds to be manufactured and a small side B1B2 lower horizontal perpendicular to the large dimension of the bridge and arranged at the level of its deck.
  • the vertices A, B1 and B2 are materialized by three pulleys 16,171 and 172.
  • An intermediate section of the cable 9 is wound on a control winch 18 mounted on the deck 1 and capable of working alternately in both directions.
  • the strands constituting the two shrouds to be manufactured extend respectively on the two sides AB1 and AB2 and there is available on each of these sides a light cage composed of stirrups and cables of the kind defined above.
  • the two corresponding carriages - or "double carriages" - are designated respectively in FIG. 6 by the references 121 and 122.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

In order to mount a multistrand stay cable of a cable-stayed bridge between a pillar (tower) and the deck of this bridge, one of the strands (41) intended to constitute the stay cable is fitted in its final oblique position; a guide cage is suspended from this first strand thus fitted, which cage consists of a sequence of rigid bow struts (stirrup pieces) (5) connected together by small cables (6), the said cage surrounding the said first strand as well as a traction cable (9); using the said cable, the following strands (4) are pulled in succession into the cage; at the end of the traction of each strand, it is tensioned so as to apply it laterally against the strands already fitted, and its ends are anchored, respectively on the pillar and on the deck; and all of the strands have been fitted, the guide cage is released from the finished stay cable. <IMAGE>

Description

L'invention concerne les haubans destinés à équiper les ponts haubanés en reliant les pylônes de ces ponts à leurs tabliers, haubans constitués par des torons multiples juxtaposés côte à côte, chacun de ces torons étant lui-même de préférence du type "individuellement protégé", c'est-à-dire constitué par un faisceau de fils métalliques parallèles ou torsadés logés dans une gaine continue avec interposition d'un produit protecteur.The invention relates to guy lines intended to equip guyed bridges by connecting the pylons of these bridges to their decks, guy wires constituted by multiple strands juxtaposed side by side, each of these strands being itself preferably of the "individually protected" type. , that is to say constituted by a bundle of parallel or twisted metal wires housed in a continuous sheath with the interposition of a protective product.

Elle vise plus particulièrement les procédés et dispositifs pour monter les haubans du genre en question en leurs formes obliques définitives, pour lesquelles ils forment ensemble des nappes, généralement verticales, disposées de part et d'autre de chaque pylône.It relates more particularly to the methods and devices for mounting the shrouds of the type in question in their final oblique shapes, for which they together form sheets, generally vertical, arranged on either side of each pylon.

Elle vise plus particulièrement le cas où certains au moins des haubans à monter présentent une très grande longueur, cette longueur pouvant dépasser 200 mètres.It relates more particularly to the case where at least some of the shrouds to be mounted have a very long length, this length possibly exceeding 200 meters.

Dans un tel cas, il n'est plus guère possible de mettre en oeuvre la technique connue consistant à fabriquer le hauban complet horizontalement au pied du pylône qui doit le supporter, puis à relever l'extrémité de ce hauban disposée contre le pylône, en tirant ce hauban, vu que son poids est alors trop élevé.In such a case, it is no longer possible to implement the known technique consisting in manufacturing the complete shroud horizontally at the foot of the pylon which must support it, then in raising the end of this shroud arranged against the pylon, pulling this guy, since its weight is then too high.

Une autre technique connue pour le montage des haubans du genre en question consiste à tirer obliquement, selon la direction de son axe, ledit hauban préalablement fabriqué, c'est-à-dire déjà composé de l'ensemble de ses torons constitutifs juxtaposés côte à côte, à l'aide d'un système du genre des téléphériques.Another known technique for mounting guy wires of the kind in question consists in pulling obliquely, in the direction of its axis, said guy cable previously manufactured, that is to say already composed of all of its constituent strands juxtaposed side by side. side, using a system like cable cars.

A cet effet, on tend préalablement un câble porteur entre un point haut du pylône de support et le tablier et on fait rouler sur ce câble, par l'intermédiaire d'un train de roulement approprié, un organe d'accrochage auquel est attelée la tête ou extrémité haute du hauban.To this end, a carrier cable is stretched beforehand between a high point of the support pylon and the deck and a hooking member is rolled on this cable, by means of an appropriate undercarriage, to which the head or high end guy line.

La mise en place préalable d'un tel câble porteur est elle-même une opération difficile et coûteuse et, ici encore, les forces à développer pour tirer le hauban deviennent prohibitives pour les très grandes longueurs.The prior installation of such a carrying cable is itself a difficult and costly operation and, here again, the forces to be developed to pull the shroud become prohibitive for very long lengths.

L'invention a pour but, surtout, de remédier à ces différents inconvénients.The object of the invention is, above all, to remedy these various drawbacks.

A cet effet, les procédés de montage des haubans du genre en question sont essentiellement caractérisés selon l'invention en ce que l'on compose ces haubans directement, toron par toron, en leurs emplacements obliques définitifs, en procédant à la suite des opérations suivantes :

  • on met en place en sa position oblique définitive l'un des torons destinés à constituer le hauban, cette phase de mise en place se terminant par la mise en tension du toron et l'ancrage de ses extrémités sur respectivement le pylône et le tablier,
  • on suspend à ce premier toron ainsi mis en place une cage de guidage pour les torons suivants, cage s'étendant sur toute la longueur dudit toron et composée d'une suite d'étriers rigides reliés entre eux par des câblettes, ladite cage entourant ledit premier toron ainsi qu'un câble de traction,
  • on tire successivement à l'aide dudit câble les torons suivants constitutifs du hauban, éventuellement par paires, à l'intérieur de la cage,
  • à la fin de la traction de chaque toron, on met celui-ci sous tension de façon à l'appliquer latéralement contre le toron ou l'ensemble des torons déjà mis en place et l'on ancre ses extrémités respectivement sur le pylône et sur le tablier,
  • et après mise en place de la totalité des torons, on dégage la cage de guidage du hauban terminé.
To this end, the mounting methods of the shrouds of the type in question are essentially characterized according to the invention in that these shrouds are composed directly, strand by strand, in their final oblique locations, by following the following operations :
  • one sets up in its final oblique position one of the strands intended to constitute the stay, this phase of establishment ending with the tensioning of the strand and the anchoring of its ends on the pylon and the deck respectively,
  • a guide cage for the following strands is suspended from this first strand thus put in place, a cage extending over the entire length of said strand and composed of a series of rigid stirrups connected together by cables, said cage surrounding said strand first strand as well as a traction cable,
  • the following strands constituting the stay, successively in pairs, are successively drawn using said cable, inside the cage,
  • at the end of the traction of each strand, the latter is tensioned so as to apply it laterally against the strand or the set of strands already in place and its ends are anchored respectively on the pylon and on apron,
  • and after all of the strands have been put in place, the guide shroud is released.

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

  • pour construire les différents haubans obliques constituant une même nappe verticale ou sensiblement verticale, on commence par monter le hauban inférieur le plus court, puis on monte successivement chacun des autres haubans en progressant de proche en proche vers le haut et, pour la mise en place du premier toron de chacun des haubans autres que le hauban inférieur, on utilise la cage de guidage ayant servi à monter le hauban précédent, alors qu'elle est encore suspendue à ce dernier,
  • s'il est prévu d'un même côté longitudinal d'un pylône deux nappes verticales ou sensiblement verticales de haubans obliques formant ensemble un dièdre à angle aigu, on procède simultanément au montage des deux haubans, compris respectivement par ces deux nappes, qui sont disposés au même niveau en ayant recours à un câble de traction unique s'étendant selon un circuit fermé en forme de triangle isocèle délimité par des poulies, les deux grands côtés égaux de ce triangle s'étendant selon les axes obliques des deux haubans à monter et le troisième côté s'étendant horizontalement, perpendiculairement au pont et comprenant un treuil ou analogue à sens de rotation réversible.
In preferred embodiments, use is also made of one and / or the other of the provisions following:
  • to build the different oblique guy wires constituting the same vertical or substantially vertical cable, we start by mounting the shortest lower guy, then we successively mount each of the other guys, progressing step by step upwards and, for setting up the first strand of each of the shrouds other than the lower shroud, the guide cage used to mount the previous shroud is used, while it is still suspended from the latter,
  • if there are provided on the same longitudinal side of a pylon two vertical or substantially vertical plies of oblique shrouds together forming a dihedral at an acute angle, the two shrouds, comprised respectively by these two plies, are simultaneously mounted, which are arranged at the same level using a single traction cable extending in a closed circuit in the form of an isosceles triangle delimited by pulleys, the two large equal sides of this triangle extending along the oblique axes of the two shrouds to be mounted and the third side extending horizontally, perpendicular to the bridge and comprising a winch or the like with reversible direction of rotation.

Pour ce qui est des dispositifs de montage du genre en question, ils sont essentiellement caractérisés en ce qu'ils comprennent une cage de guidage pour les torons et le câble de traction, composée d'une succession d'étriers rigides reliés entre eux par des câblettes, chaque étrier comprenant un arceau et une barrette de fermeture inférieure facilement amovible.As regards mounting devices of the kind in question, they are essentially characterized in that they comprise a guide cage for the strands and the traction cable, composed of a succession of rigid stirrups connected together by cables, each bracket including an arch and an easily removable lower closing bar.

Dans des modes de réalisation préférés, ces dispositifs comportent en outre application de l'une et/ou l'autre des dispositions suivantes :

  • la cage de guidage comprend trois câblettes parallèles, l'une étant attachée au sommet des différents arceaux et les deux autres, aux pieds de ces arceaux,
  • la cage de guidage contient au moins un fil parallèle aux câblettes servant de rail de guidage pour les coulissements d'un chariot, ledit chariot étant fixé en un point intermédiaire du câble de traction et étant agencé de façon telle que les têtes des torons à mettre en place soient facilement accrochables sur lui de façon amovible,
  • le chariot selon l'alinéa précédent est bordé latéralement par deux tronçons tubulaires rigides traversés respectivement par deux fils de guidage contenus dans la cage,
  • chaque étrier comprend intérieurement, au voisinage de chaque pied d'arceau, deux languettes définissant avec les portions adjacentes d'arceau et de barrette un oeillet à ouverture étranglée dans lequel est logé l'un des deux fils de guidage selon l'alinéa précédent,
  • le chariot ci-dessus ou chariot principal est associé à un chariot auxiliaire, lequel est fixé d'une façon facilement amovible en un point intermédiaire du câble de traction disposé un peu plus haut que le chariot principal, ce chariot auxiliaire étant en outre monté coulissant sur chaque fil de guidage d'une façon éventuellement amovible et agencé de façon telle que les têtes des torons à mettre en place soient facilement accrochables sur lui de façon amovible,
  • chaque chariot est agencé de façon telle que les têtes de deux des torons à mettre en place soient facilement accrochables sur lui de façon amovible,
  • la distance entre les étriers successifs de la cage est comprise entre 5 et 10 mètres.
In preferred embodiments, these devices also comprise application of one and / or the other of the following provisions:
  • the guide cage comprises three parallel cables, one being attached to the top of the various arches and the other two, to the feet of these arches,
  • the guide cage contains at least one wire parallel to the cables serving as a guide rail for the sliding of a carriage, said carriage being fixed at an intermediate point of the traction cable and being arranged in such a way that the heads of the strands to be laid in place are easily hooked on it removably,
  • the carriage according to the preceding paragraph is bordered laterally by two rigid tubular sections crossed respectively by two guide wires contained in the cage,
  • each stirrup internally comprises, in the vicinity of each hoop leg, two tongues defining with the adjacent hoop and bar portions an eyelet with a constricted opening in which is housed one of the two guide wires according to the preceding paragraph,
  • the above carriage or main carriage is associated with an auxiliary carriage, which is fixed in an easily removable manner at an intermediate point of the traction cable disposed a little higher than the main carriage, this auxiliary carriage being furthermore mounted sliding on each guide wire in a possibly removable manner and arranged in such a way that the heads of the strands to be put in place are easily hooked on it in a removable manner,
  • each carriage is arranged in such a way that the heads of two of the strands to be placed are easily hooked onto it in a removable manner,
  • the distance between the successive stirrups of the cage is between 5 and 10 meters.

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 quelques modes de réalisation préférés de l'invention en se référant aux dessins ci-annexés d'une manière bien entendu non limitative.In the following, we will describe some modes preferred embodiments of the invention with reference to the accompanying drawings of course in a non-limiting manner.

La figure 1, de ces dessins, montre très schématiquement le principe général de montage d'un hauban conforme à l'invention.Figure 1 of these drawings shows very schematically the general principle of mounting a guy line according to the invention.

La figure 2 montre en perspective schématique et à plus grande échelle une portion du dispositif de montage correspondant.Figure 2 shows in schematic perspective and on a larger scale a portion of the corresponding mounting device.

La figure 3 montre à encore plus grande échelle une coupe tranversale du même dispositif.Figure 3 shows on an even larger scale a cross section of the same device.

La figure 4 montre également à plus grande échelle et en vue perspective un composant de ce dispositif.Figure 4 also shows on a larger scale and in perspective view a component of this device.

La figure 5 montre très schématiquement une phase particulière de montage de haubans, également conforme à l'invention.FIG. 5 very schematically shows a particular phase of mounting guy lines, also in accordance with the invention.

La figure 6 montre schématiquement en plan une portion d'un pont à haubans en cours de construction comprenant un dispositif de montage conforme à l'invention.Figure 6 schematically shows in plan a portion of a cable-stayed bridge under construction comprising a mounting device according to the invention.

Il s'agit de faire supporter le tablier 1 d'un pont par au moins un pylône ou pilier 2 par l'intermédiaire d'une pluralité de haubans 3 (figure 5) tendus selon des directions obliques sensiblement parallèles entre elles entre le tablier et le pylône de façon à former des nappes verticales ou sensiblement verticales.This involves supporting the deck 1 of a bridge by at least one pylon or pillar 2 by means of a plurality of shrouds 3 (FIG. 5) stretched in oblique directions substantially parallel to each other between the deck and the pylon so as to form vertical or substantially vertical sheets.

Chacun des haubans 3 est constitué par une pluralité de torons indépendants, c'est-à-dire pouvant être montés et mis sous tension indépendamment les uns des autres et même, dans certains cas, remplacés isolément.Each of the shrouds 3 is constituted by a plurality of independent strands, that is to say that can be mounted and tensioned independently of each other and even, in some cases, replaced in isolation.

Chaque toron 3 peut être constitué par un gros fil, mais il est de préférence composé d'une âme centrale entourée par une pluralité de fils jointifs, généralement au nombre de six, enroulés en hélice autour de ladite âme, chaque fil ainsi que l'âme étant avantageusement protégés superficiellement par exemple par galvanisation, et l'ensemble torsadé résultant étant lui-même entouré par une gaine de protection étanche, généralement en matière plastique, avec éventuellement interposition d'un liant protecteur approprié tel qu'une cire pétrolière.Each strand 3 may be constituted by a large wire, but it is preferably composed of a central core surrounded by a plurality of contiguous wires, generally six in number, wound helically around said core, each wire as well as the the core being advantageously surface protected, for example by galvanization, and the resulting twisted assembly itself being surrounded by a tight protective sheath, generally made of plastic, with possibly the interposition of a suitable protective binder such as petroleum wax.

Les portions courantes des torons "individuellement protégés" ou "auto-protégés" ainsi définis sont juxtaposées latéralement, étant serrées les unes contre les autres par des colliers non représentés.The current portions of the "individually protected" or "self-protected" strands thus defined are juxtaposed laterally, being clamped against each other by collars not shown.

Pour les grands ponts, le nombre de torons 4 composant un même hauban 3 est de plusieurs dizaines.For large bridges, the number of strands 4 making up the same stay 3 is several tens.

Si la longueur des haubans multiples ainsi composés est grande, et en particulier si elle dépasse 200 mètres, voire 300 ou même 400 mètres, le poids résultant de chaque hauban est énorme et le montage de ces haubans sur les pylônes pose de sérieux problèmes.If the length of the multiple shrouds thus composed is large, and in particular if it exceeds 200 meters, or even 300 or even 400 meters, the weight resulting from each shroud is enormous and the mounting of these shrouds on the pylons poses serious problems.

Pour réaliser un tel montage, on procède ici comme suit.To carry out such an assembly, the procedure here is as follows.

Pour chaque hauban, on commence par mettre en place l'un 4₁ des torons constitutifs de ce hauban en ancrant sa tête en un point A du pylône 2 de support et son pied en un second point B du tablier 1.For each guy, we start by setting up one 4₁ of the strands making up this guy by anchoring his head at a point A on the support pylon 2 and his foot at a second point B on the deck 1.

Une telle mise en place est avantageusement effectuée de la manière qui sera explicitée plus loin en référence à la figure 5.Such an installation is advantageously carried out in the manner which will be explained below with reference to FIG. 5.

Mais on peut l'effectuer de toute autre manière désirable, par exemple en mettant en oeuvre le premier procédé rappelé ci-dessus (élévation verticale de la tête du toron étendue horizontalement au pied du pylône) étant donné que le poids d'un toron unique est relativement faible.However, it can be carried out in any other desirable manner, for example by implementing the first method mentioned above (vertical elevation of the strand head extended horizontally at the foot of the pylon) since the weight of a single strand is relatively small.

C'est ensuite ce premier toron 4₁ ainsi mis en place qui est utilisé pour supporter l'équipage servant à monter les torons suivants, ces derniers venant ensuite renforcer à tour de rôle le premier toron dans son rôle de support dès la fin de leur mise en place.It is then this first strand 4₁ thus put in place which is used to support the crew used to assemble the following strands, the latter then coming in turn to reinforce the first strand in its supporting role as soon as they are finished in place.

Pour monter chaque toron "suivant" 4, c'est-à-dire autre que le premier, on procède comme suit.To mount each "next" strand 4, that is to say other than the first, we proceed as follows.

On met en place sur le premier toron 4₁ une cage de guidage légère formée par une suite d'étriers rigides 5 reliés entre eux par des câblettes 6 (figures 2,3,4).Is placed on the first strand 4₁ a light guide cage formed by a series of rigid stirrups 5 connected together by cables 6 (Figures 2,3,4).

Chaque étrier 5 est constitué par un arceau 7 dont la base est fermée par une barrette horizontale 8 facilement amovible.Each stirrup 5 is constituted by a hoop 7, the base of which is closed by a horizontal bar 8 that is easily removable.

Les câblettes 6 sont de préférence au nombre de trois, étant alors attachées sur chaque arceau 7, respectivement en son sommet C et à ses deux pieds D et E.The cables 6 are preferably three in number, then being attached to each arch 7, respectively at its apex C and at its two feet D and E.

La câblette 6 supérieure, attachée au sommet C des arceaux repose directement sur le toron 4₁ et la tension des câblettes est effectuée de façon telle que chaque étrier soit stabilisé avec sa barrette 8 disposée horizontalement et en bas.The upper cable 6, attached to the top C of the arches rests directly on the strand 4₁ and the tension of the cables is carried out so that each stirrup is stabilized with its bar 8 arranged horizontally and at the bottom.

La distance entre les étriers 5 successifs est généralement comprise entre 5 et 10 mètres, de sorte que chaque "cage" comprend plusieurs dizaines d'étriers.The distance between the successive stirrups 5 is generally between 5 and 10 meters, so that each "cage" comprises several tens of stirrups.

La cage sert à contenir, d'une part, un câble de traction 9 et, d'autre part, au moins un fil et de préférence deux fils 10 et 11 propres à servir de rails de guidage pour au moins un chariot 12.The cage serves to contain, on the one hand, a traction cable 9 and, on the other hand, at least one wire and preferably two wires 10 and 11 suitable for serving as guide rails for at least one carriage 12.

Chaque étrier 5 comprend intérieurement, au voisinage de chaque extrémité de la barrette 8 constituant sa base, deux languettes 13,14 formant avec les portions contiguës de l'étrier deux oeillets à ouverture étranglée.Each stirrup 5 internally comprises, in the vicinity of each end of the bar 8 constituting its base, two tabs 13, 14 forming with the contiguous portions of the stirrup two eyelets with a constricted opening.

Chacun de ces oeillets est traversé par l'un des fils 10,11.Each of these eyelets is crossed by one of the wires 10,11.

Le chariot 12 est délimité latéralement par deux bagues tubulaires 15 traversées chacune par l'un des fils 10 et 11 et les agencements et dimensions respectifs de ces bagues et des oeillets ci-dessus sont tels que les premières puissent facilement pénétrer dans les seconds : les portées respectives de ces bagues et oeillets propres à venir axialement en contact présentent toutes rampes désirables (non représentées) pour rendre possibles et faciliter les introductions des premières dans les seconds.The carriage 12 is delimited laterally by two tubular rings 15 each traversed by one of the wires 10 and 11 and the arrangements and respective dimensions of these rings and of the above eyelets are such that the former can easily penetrate into the latter: the respective ranges of these rings and eyelets suitable for coming axially into contact have all desirable ramps (not shown) to make possible and facilitate the introduction of the former into the latter.

Le chariot 12 est fixé en un point intermédiaire du câble de traction 9 et la tête d'au moins un toron 4 est accrochée sur ledit chariot d'une manière facilement décrochable, à l'aide de moyens appropriés, par exemple par son serrage entre le châssis dudit chariot 12 et une mâchoire 19 vissée sur ce châssis.The carriage 12 is fixed at an intermediate point of the traction cable 9 and the head of at least one strand 4 is hooked on said carriage in an easily detachable manner, using appropriate means, for example by its clamping between the chassis of said carriage 12 and a jaw 19 screwed onto this chassis.

Comme visible sur la figure 2, un bout de chaque toron 4, constituant la tête de ce toron, déborde vers le haut au-delà du chariot 12.As can be seen in FIG. 2, one end of each strand 4, constituting the head of this strand, projects upwards beyond the carriage 12.

Dans un mode de réalisation préféré, un second chariot 20, ou chariot auxiliaire, est disposé à proximité de l'extrémité supérieure de chacun des bouts en question, chariot présentant les caractéristiques suivantes :

  • il est accroché de façon facilement amovible, à l'aide de moyens non représentés, à un point intermédiaire du câble de traction 9 disposé plus haut que le chariot 12,
  • il est monté coulissant d'une façon facilement amovible, à l'aide de moyens non représentés, sur les rails 10 et 11,
  • chaque tête de toron 4 est accrochée sur lui de façon facilement amovible comme pour le chariot 12.
In a preferred embodiment, a second carriage 20, or auxiliary carriage, is arranged near the upper end of each of the ends in question, a carriage having the following characteristics:
  • it is hooked in an easily removable manner, using means not shown, at an intermediate point of the traction cable 9 disposed higher than the carriage 12,
  • it is slidably mounted in an easily removable manner, using means not shown, on the rails 10 and 11,
  • each strand head 4 is easily attached to it as for the carriage 12.

Le fonctionnement du dispositif qui vient d'être décrit est le suivant.The operation of the device which has just been described is as follows.

Après mise en place du premier toron 4₁ et de la cage 5-6 sur ce toron, avec le câble 9 et les fils 10,11 dans cette cage, on place initialement en bas de la cage, c'est-à-dire au voisinage du point B de la figure 1, les chariots 12 et 20 accrochés sur ledit câble 9, le chariot 20 étant écarté d'un ou deux mètres de chariot 12 en direction du pylône 2.After placing the first strand 4₁ and the cage 5-6 on this strand, with the cable 9 and the wires 10.11 in this cage, we initially place it at the bottom of the cage, that is to say at in the vicinity of point B in FIG. 1, the carriages 12 and 20 hooked on said cable 9, the carriage 20 being separated by one or two meters of carriage 12 in the direction of the pylon 2.

On accroche alors sur les chariots la tête d'au moins un toron 4 -le nombre des torons 4 considérés étant égal à deux dans le mode de réalisation illustré- ou plus précisément une extrémité d'au moins un câble continu déroulé notamment à partir d'une bobine 15 d'axe horizontal et susceptible de former le toron désiré après déroulement et découpe.The head of at least one strand 4 is then hung on the carriages - the number of strands 4 considered being equal to two in the embodiment illustrated - or more precisely one end of at least one continuous cable unwound in particular from a reel 15 with a horizontal axis and capable of forming the desired strand after unwinding and cutting.

Puis on tire les chariots dans le sens ascendant de la flèche F à l'aide du câble de traction 9.Then pull the carriages in the upward direction of arrow F using the traction cable 9.

Les bagues 15 des chariots traversent alors les oeillets ci-dessus définis des étriers 5 et les torons 4 tirés traversent successivement ces étriers 5 en glissant le long de leurs barrettes inférieures 8.The rings 15 of the carriages then pass through the above-defined eyelets of the stirrups 5 and the drawn strands 4 successively pass through these stirrups 5 by sliding along their lower bars 8.

Au cours de cette progression, les différents tronçons de toron 4 compris entre deux barrettes 8 consécutives sont légèrement incurvés vers le bas sous l'effet de la pesanteur, mais la flèche verticale f (figure 1) de chacun de ces tronçons est relativement faible, de sorte que l'effort de traction à exercer sur le câble 9 est, lui aussi, relativement faible.During this progression, the different strand sections 4 comprised between two consecutive bars 8 are slightly curved downwards under the effect of gravity, but the vertical arrow f (FIG. 1) of each of these sections is relatively small, so that the tensile force to be exerted on the cable 9 is also relatively low.

Lorsque la tête de chaque toron 4 ainsi tiré parvient au point haut A, on décroche cette tête du chariot supérieur 20, on détache ce chariot 20 à la fois du câble de traction 9 et des rails de guidage 10,11 et on enfile l'extrémité dénudée de la tête considérée dans son dispositif d'ancrage, généralement constitué par un mors tronconique fendu lui-même logé dans un alésage complémentaire d'un bloc d'ancrage.When the head of each strand 4 thus pulled reaches the high point A, this head is removed from the upper carriage 20, this carriage 20 is detached from both the traction cable 9 and the guide rails 10,11 and the stripped end of the head considered in its anchoring device, generally constituted by a tapered jaw split itself housed in a complementary bore of an anchoring block.

Puis, à l'aide du câble de traction 9, on continue à faire progresser le chariot 12 vers le haut, ce qui poursuit l'introduction de la tête du toron 4 dans son mors d'ancrage.Then, using the traction cable 9, the carriage 12 continues to advance upwards, which continues the introduction of the head of the strand 4 into its anchoring jaw.

Quand cette introduction est suffisante pour pouvoir être relayée par un un vérin de traction habituel, on détache ladite tête du chariot 12, on coupe la base du toron considéré au voisinage du point bas B et on ancre les deux extrémités de ce toron, de toute façon désirable connue, au voisinage des zones d'ancrage des extrémités haute et basse du premier toron 4₁.When this introduction is sufficient to be able to be relayed by a usual traction cylinder, the said head of the carriage 12 is detached, the base of the strand in question is cut in the vicinity of the low point B and the two ends of this strand are anchored, known desirable manner, in the vicinity of the anchoring zones of the upper and lower ends of the first strand 4₁.

Cet ancrage a pour effet de juxtaposer latéralement chaque nouveau toron 4 contre le toron 4₁ préalablement mis en place et tendu, ce qui est rendu possible par le fait que tous les torons, y compris le premier, sont disposés à l'intérieur de la cage formée par la suite des arceaux 5.This anchoring has the effect of juxtaposing laterally each new strand 4 against the strand 4₁ previously placed and tensioned, which is made possible by the fact that all the strands, including the first, are arranged inside the cage subsequently formed by hoops 5.

C'est alors le faisceau des torons ainsi juxtaposés qui supporte la cage ainsi que ses accessoires (voir les torons regroupés dans la partie haute de la cage sur les figures 2 et 3).It is then the bundle of strands thus juxtaposed which supports the cage as well as its accessories (see the strands grouped in the upper part of the cage in Figures 2 and 3).

A l'aide du câble 9, on fait ensuite redescendre à vide au bas de la cage le chariot 12, ainsi que le chariot 20, préalablement remonté sur ses rails et réaccroché audit câble.Using the cable 9, the carriage 12 is then lowered back empty to the bottom of the cage, as well as the carriage 20, previously reassembled on its rails and re-attached to said cable.

Puis on attèle à nouveau à ces chariots la tête d'au moins un nouveau toron et on procède à sa mise en place comme pour les précédents, et ainsi de suite jusqu'au dernier toron : le hauban est alors achevé.Then the carriages are again hitched to the head of at least one new strand and it is put in place as for the previous ones, and so on until the last strand: the shroud is then completed.

On peut alors récupérer la cage en la faisant glisser le long du hauban terminé vers l'extrémité basse de celui-ci, puis en ouvrant inférieurement chaque étrier par démontage au moins partiel de sa barrette 8.The cage can then be recovered by sliding it along the finished stay towards the lower end of the latter, then by opening each stirrup lower by at least partial disassembly of its bar 8.

Selon un perfectionnement intéressant schématisé sur la figure 5, qui est applicable à la mise en place de chaque "premier toron" 4'₁ constitutif d'un "nouveau hauban" situé juste au-dessus d'un hauban terminé ou "hauban précédent", on utilise la cage qui entoure encore ce hauban précédent, juste à la fin de sa fabrication, pour assurer ladite mise en place.According to an interesting improvement shown schematically in Figure 5, which is applicable to the establishment of each "first strand" 4'₁ constituting a "new guy" located just above a completed guy or "previous guy" , the cage which still surrounds this preceding shroud is used, just at the end of its manufacture, to ensure said positioning.

En d'autres termes, on utilise encore comme précédemment le chariot 12 pour hisser le premier toron 4'₁ jusqu'au voisinage du point A relatif au "hauban précédent", mais au lieu d'ancrer la tête de ce toron au niveau dudit point A, on l'ancre au niveau plus élevé du point A', auquel doit être ancré le nouveau hauban.In other words, the carriage 12 is also used as above to hoist the first strand 4'₁ to the vicinity of point A relating to the "previous shroud", but instead of anchoring the head of this strand at said level point A, it is anchored at the higher level of point A ', to which the new stay must be anchored.

A cet effet, il suffit d'élever ladite tête du toron 4'₁ de la hauteur A,A'.For this purpose, it suffices to raise said head from strand 4'₁ of height A, A '.

Cette élévation ne pose pas de problème majeur, car la hauteur A,A' est petite et le poids d'un toron unique est relativement faible.This elevation does not pose a major problem, because the height A, A ′ is small and the weight of a single strand is relatively low.

Bien entendu, l'élévation en question peut être effectuée après dégagement de la cage hors du hauban précédent.Of course, the elevation in question can be carried out after releasing the cage out of the preceding shroud.

Comme indiqué ci-dessus, le dégagement en question de la cage hors du hauban terminé est rendu possible par la facile amovibilité des barrettes 8 : lorsque ces barrettes sont écartées, voire séparées, des arceaux 7 correspondants, ceux-ci sont ouverts vers le bas et peuvent donc être dégagés du hauban qu'ils chevauchent par simple soulèvement.As indicated above, the clearance in question of the cage out of the finished stay is made possible by the easy removable of the bars 8: when these bars are separated, or even separated, from the corresponding arches 7, these are open downwards and can therefore be released from the shroud which they overlap by simple lifting.

Leur montage subséquent sur le premier toron 4'₁ constitutif du nouveau hauban à fabriquer est ensuite réalisé très facilement en faisant chevaucher celui-ci par ledit arceau 7, puis en fermant cet arceau par sa barrette 8 au-dessous dudit toron de façon à former l'étrier 5 composé par cet arceau et cette barrette.Their subsequent mounting on the first strand 4'₁ constituting the new guy to be manufactured is then very easily achieved by overlapping it by said hoop 7, then closing this hoop by its bar 8 below said strand so as to form the stirrup 5 composed by this hoop and this bar.

Le procédé qui vient d'être décrit pour la mise en place de chaque "premier toron" d'un hauban mis en place au-dessus d'un "hauban précédent" ne peut bien entendu pas être utilisé pour le hauban le plus bas de chaque nappe.The process which has just been described for the positioning of each "first strand" of a shroud placed above a "previous shroud" cannot of course be used for the lowest shroud of each tablecloth.

Mais ce n'est pas là un grave inconvénient car, ledit hauban le plus bas est en général relativement court et le niveau de sa tête est relativement bas : le premier toron correspondant est donc relativement léger et son montage ne pose pas de problème majeur.But this is not a serious drawback because, said lowest guy is generally relatively short and the level of its head is relatively low: the corresponding first strand is therefore relatively light and its assembly does not pose any major problem.

Sur la figure 6, on a illustré un autre perfectionnement applicable à un pont haubané pour lequel les haubans obliques qui relient le tablier 1 à l'une des faces d'un pylône 2 se présentent non pas sous la forme d'une nappe verticale longitudinale unique ou de deux telles nappes parallèles, mais sous la forme de deux nappes N₁ et N₂ verticales ou sensiblement verticales divergentes à partir du pylône et formant ensemble au moins approximativement un dièdre d'axe vertical et de faible ouverture.In FIG. 6, another improvement has been illustrated applicable to a cable-stayed bridge for which the oblique stay cables which connect the deck 1 to one of the faces of a pylon 2 are not in the form of a longitudinal vertical sheet. single or two such parallel sheets, but in the form of two sheets N₁ and N vertical vertical or substantially vertical divergent from the pylon and forming together at least approximately a dihedral with a vertical axis and small opening.

Dans ce cas, il est intéressant de fabriquer simultanément les haubans de même niveau de ces deux nappes et le procédé ci-dessus décrit se prête très bien à une telle fabrication simultanée.In this case, it is advantageous to manufacture the guy wires of the same level simultaneously from these two plies and the process described above is very suitable for such simultaneous manufacturing.

A cet effet, on fait suivre au câble de traction 9 un circuit fermé présentant la forme d'un triangle isocèle AB₁B₂ présentant deux grands côtés égaux AB₁, AB₂ qui s'étendent respectivement selon les axes des deux haubans à fabriquer et un petit côté B₁B₂ horizontal inférieur perpendiculaire à la grande dimension du pont et disposé au niveau de son tablier.To this end, the traction cable 9 is made to follow a closed circuit having the shape of an isosceles triangle AB₁B₂ having two large equal sides AB₁, AB₂ which extend respectively along the axes of the two shrouds to be manufactured and a small side B₁B₂ lower horizontal perpendicular to the large dimension of the bridge and arranged at the level of its deck.

Les sommets A,B₁ et B₂ sont matérialisés par trois poulies 16,17₁ et 17₂.The vertices A, B₁ and B₂ are materialized by three pulleys 16,17₁ and 17₂.

Un tronçon intermédiaire du câble 9 est enroulé sur un treuil de commande 18 monté sur le tablier 1 et susceptible de travailler alternativement dans les deux sens.An intermediate section of the cable 9 is wound on a control winch 18 mounted on the deck 1 and capable of working alternately in both directions.

Dans ce cas, les torons constitutifs des deux haubans à fabriquer s'étendent respectivement selon les deux côtés AB₁ et AB₂ et on dispose selon chacun de ces côtés une cage légère composée d'étriers et câblettes du genre de celle définie ci-dessus.In this case, the strands constituting the two shrouds to be manufactured extend respectively on the two sides AB₁ and AB₂ and there is available on each of these sides a light cage composed of stirrups and cables of the kind defined above.

Les deux chariots -ou "doubles chariots"- correspondants sont désignés respectivement sur la figure 6 par les références 12₁ et 12₂.The two corresponding carriages - or "double carriages" - are designated respectively in FIG. 6 by the references 12₁ and 12₂.

On voit que, pour un sens de rotation du treuil 18, correspondant à la flèche F, les chariots 12₁ s'élèvent du point B₁ au point A, alors qu'au contraire le chariot 12₂ progresse en descendant le long du côté AB₂.We see that, for a direction of rotation of the winch 18, corresponding to the arrow F, the carriages 12₁ rise from point B₁ to point A, while on the contrary the carriage 12₂ progresses downhill along the side AB₂.

C'est l'inverse que l'on observe pour l'autre sens de rotation du treuil 18.The opposite is observed for the other direction of rotation of the winch 18.

On peut donc hisser à tour de rôle les torons constitutifs des deux haubans à fabriquer moyennant des inversions du sens de rotation du treuil 18.It is therefore possible to hoist in turn the strands constituting the two shrouds to be manufactured by means of reversals of the winch's direction of rotation 18.

En suite de quoi et quel que soit le mode de réalisation adopté, on obtient finalement des dispositifs de montage de haubans à torons multiples dont la constitution, la mise en oeuvre et les avantages résultent suffisamment de ce qui précède.As a result of what and whatever the embodiment adopted, there are finally obtained devices for mounting shrouds with multiple strands, the constitution, implementation 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.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 its variants.

Claims (10)

Procédé pour monter un hauban à torons multiples d'un pont haubané entre un pylône et le tablier de ce pont, caractérisé en ce que l'on compose ce hauban (3) directement, toron par toron, en son emplacement oblique définitif, en procédant à la suite des opérations suivantes : on met en place en sa position oblique définitive l'un des torons (4₁) destinés à constituer le hauban, cette phase de mise en place se terminant par la mise en tension du toron et l'ancrage de ses extrémités sur respectivement le pylône (2) et le tablier (1) ; on suspend à ce premier toron ainsi mis en place une cage de guidage pour les torons suivants, cage s'étendant sur toute la longueur dudit toron et composée d'une suite d'étriers rigides (5) reliés entre eux par des câblettes (6), ladite cage entourant ledit premier toron ainsi qu'un câble de traction (9) ; on tire successivement à l'aide dudit câble les torons suivants (4) constitutifs du hauban à l'intérieur de la cage ; à la fin de la traction de chaque toron, on met celui-ci sous tension de façon à l'appliquer latéralement contre le toron ou l'ensemble des torons déjà mis en place et l'on ancre ses extrémités respectivement sur le pylône et sur le tablier ; et après mise en place de la totalité des torons, on dégage la cage de guidage du hauban terminé.Method for mounting a multi-stranded stay cable of a cable-stayed bridge between a pylon and the deck of this bridge, characterized in that this cable-stayed (3) is composed directly, strand by strand, in its final oblique location, by proceeding following the following operations: one of the strands (4₁) intended to constitute the shroud is put in its final oblique position, this phase of positioning ending with the tensioning of the strand and the anchoring of its ends on the pylon (2) and the deck (1) respectively; a guide cage for the following strands is suspended from this first strand thus set up, a cage extending over the entire length of said strand and composed of a series of rigid stirrups (5) connected together by cables (6 ), said cage surrounding said first strand as well as a traction cable (9); the following strands (4) constituting the shroud are successively drawn using said cable inside the cage; at the end of the traction of each strand, the latter is tensioned so as to apply it laterally against the strand or the set of strands already in place and its ends are anchored respectively on the pylon and on apron ; and after all of the strands have been put in place, the guide shroud is released. Procédé selon la revendication 1 pour monter les différents haubans obliques à torons multiples constituant une même nappe verticale ou sensiblement verticale d'un pont haubané, caractérisé en ce que l'on procède à la suite des opérations suivantes : on commence par monter le hauban inférieur (3) le plus court, puis on monte successivement chacun des autres haubans en progressant de proche en proche vers le haut et, pour la mise en place du premier toron (4'₁) de chacun des haubans autres que le hauban inférieur, on utilise la cage de guidage (5,6) ayant servi à monter le hauban précédent, alors qu'elle est encore suspendue à ce dernier.Method according to claim 1 for mounting the various oblique multi-strand guy lines constituting the same vertical or substantially vertical cable of a guyed bridge, characterized in that one proceeds as a result of the following operations: one begins by mounting the lower guy line (3) the shortest, then each of the other shrouds is successively mounted, progressing gradually upwards and, for the installation of the first strand (4'₁) of each of the shrouds other than the lower shroud, uses the guide cage (5,6) having been used to mount the previous stay, while it is still suspended from the latter. Procédé selon l'une quelconque des précédentes revendications pour monter d'un même côté longitudinal d'un pylône d'un pont haubané deux nappes verticales ou sensiblement verticales de haubans obliques formant ensemble un dièdre à angle aigu, caractérisé en ce que l'on procède simultanément au montage des deux haubans, compris respectivement par ces deux nappes, qui sont disposés au même niveau en ayant recours à un câble de traction (9) unique s'étendant selon un circuit fermé en forme de triangle isocèle délimité par des poulies (16,17₁,17₂), les deux grands côtés égaux (AB₁,AB₂) de ce triangle s'étendant selon les axes obliques des deux haubans à monter et le troisième côté (B₁B₂) s'étendant horizontalement, perpendiculairement au pont et comprenant un treuil (18) ou analogue à sens de rotation réversible.Method according to any one of the preceding claims for mounting, on the same longitudinal side of a pylon of a cable-stayed bridge, two vertical or substantially vertical sheets of oblique stays stay together forming a dihedral at an acute angle, characterized in that one proceeds simultaneously to the assembly of the two shrouds, comprised respectively by these two plies, which are arranged at the same level by using a single traction cable (9) extending in a closed circuit in the form of an isosceles triangle delimited by pulleys ( 16,17₁, 17₂), the two large equal sides (AB₁, AB₂) of this triangle extending along the oblique axes of the two shrouds to be mounted and the third side (B₁B₂) extending horizontally, perpendicular to the bridge and comprising a winch (18) or the like with reversible direction of rotation. Dispositif de montage de haubans à torons multiples par le procédé selon l'une quelconque des précédentes revendications, caractérisé en ce qu'il comprend une cage de guidage pour les torons et le câble de traction, composée d'une succession d'étriers rigides (5) reliés entre eux par des câblettes (6), chaque étrier comprenant un arceau (7) et une barrette de fermeture (8) inférieure facilement amovible.Device for mounting multi-strand stays by the method according to any one of the preceding claims, characterized in that it comprises a guide cage for the strands and the traction cable, composed of a succession of rigid stirrups ( 5) connected together by cables (6), each stirrup comprising an arch (7) and an easily removable lower closure bar (8). Dispositif de montage selon la revendication 4, caractérisé en ce que la cage de guidage comprend trois câblettes parallèles (6), l'une étant attachée au sommet (C) des différents arceaux (7) et les deux autres, aux pieds (D,E) de ces arceaux.Mounting device according to claim 4, characterized in that the guide cage comprises three parallel cables (6), one being attached to the top (C) of the various arches (7) and the other two, to the feet (D, E) of these arches. Dispositif de montage selon l'une quelconque des revendications 4 et 5, caractérisé en ce que la cage de guidage contient au moins un fil (10,11) parallèle aux câblettes (6) servant de rail de guidage pour les coulissements d'un chariot (12), ledit chariot étant fixé en un point intermédiaire du câble de traction (9) et étant agencé de façon telle que les têtes des torons (4) à mettre en place soient facilement accrochables sur lui de façon amovible.Mounting device according to any one of claims 4 and 5, characterized in that the guide cage contains at least one wire (10,11) parallel to the cables (6) serving as guide rail for the sliding of a carriage (12), said carriage being fixed at an intermediate point of the traction cable (9) and being arranged in such a way that the heads of the strands (4) to be put in place are easily hooked onto it in a removable manner. Dispositif de montage selon la revendication 6, caractérisé en ce que le chariot (12) est bordé latéralement par deux tronçons tubulaires rigides (15) traversés respectivement par deux fils de guidage (10,11) contenus dans la cage.Mounting device according to claim 6, characterized in that the carriage (12) is bordered laterally by two rigid tubular sections (15) crossed respectively by two guide wires (10,11) contained in the cage. Dispositif de montage selon l'une quelconque des revendications 6 et 7, caractérisé en ce que le chariot ci-dessus ou chariot principal (12) est associé à un chariot auxiliaire (20), lequel est fixé d'une façon facilement amovible en un point intermédiaire du câble de traction (9) disposé un peu plus haut que le chariot principal, ce chariot auxiliaire étant en outre monté coulissant sur chaque fil de guidage (10,11) et agencé de façon telle que les têtes des torons (4) à mettre en place soient facilement accrochables sur lui de façon amovible.Mounting device according to any one of claims 6 and 7, characterized in that the above carriage or main carriage (12) is associated with an auxiliary carriage (20), which is fixed in an easily removable manner in a intermediate point of the traction cable (9) disposed a little higher than the main carriage, this auxiliary carriage being furthermore slidably mounted on each guide wire (10,11) and arranged in such a way that the heads of the strands (4) to be put in place are easily attached to it in a removable manner. Dispositif de montage selon l'une quelconque des revendications 6 à 8, caractérisé en ce que chaque chariot (12,20) est agencé de façon telle que les têtes de deux des torons (4) à mettre en place soient facilement accrochables sur lui de façon amovible.Mounting device according to any one of Claims 6 to 8, characterized in that each carriage (12,20) is arranged in such a way that the heads of two of the strands (4) to be put in place are easily hooked onto it by removable way. Dispositif de montage selon l'une quelconque des revendications 4 à 9, caractérisé en ce que la distance entre les étriers successifs (5) de la cage est comprise entre 5 et 10 mètres.Mounting device according to any one of claims 4 to 9, characterized in that the distance between the successive stirrups (5) of the cage is between 5 and 10 meters.
EP94400572A 1993-03-18 1994-03-16 Process and apparatus for placing parallel wire strands in cable-stayed bridges Expired - Lifetime EP0616079B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9303146 1993-03-18
FR9303146A FR2702782B1 (en) 1993-03-18 1993-03-18 Improvements to methods and devices for mounting the multi-stranded stays of bridges.

Publications (2)

Publication Number Publication Date
EP0616079A1 true EP0616079A1 (en) 1994-09-21
EP0616079B1 EP0616079B1 (en) 1997-01-15

Family

ID=9445117

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94400572A Expired - Lifetime EP0616079B1 (en) 1993-03-18 1994-03-16 Process and apparatus for placing parallel wire strands in cable-stayed bridges

Country Status (12)

Country Link
US (1) US5461743A (en)
EP (1) EP0616079B1 (en)
JP (1) JP3501170B2 (en)
KR (1) KR940021836A (en)
AT (1) ATE147813T1 (en)
BR (1) BR9305229A (en)
DE (1) DE69401448D1 (en)
FR (1) FR2702782B1 (en)
GR (1) GR3022373T3 (en)
HK (1) HK1000352A1 (en)
NO (1) NO940967L (en)
TW (1) TW248579B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2858987A1 (en) * 2003-08-20 2005-02-25 Freyssinet Int Stup Suspension system guy assembling method for engineering structure, involves connecting strands to small size shuttle, and rotating shuttle around its main axis in opposite direction of entangling formed between driving and guiding units
CN106245530A (en) * 2016-08-24 2016-12-21 广西长长路桥建设有限公司 A kind of universal rod body CABLEWAY ERECTION SYSTEM removes engineering method
CN113529571A (en) * 2021-07-26 2021-10-22 中铁一局集团(广州)建设工程有限公司 Positioning device for rhombic wire-separating pipe cable saddle of short-tower cable-stayed bridge

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2849070B1 (en) * 2002-12-18 2005-03-04 Freyssinet Int Stup METHOD FOR MOUNTING A HAUBAN
FR2883376B1 (en) 2005-03-17 2007-06-15 Fressinet Internat Stup METHOD FOR DETECTING RUPTURE WITHIN A STRUCTURE AND SYSTEM FOR IMPLEMENTING THE METHOD
TWI310157B (en) 2006-02-23 2009-05-21 Asustek Comp Inc Method for changing booting source of a computer system and related backuping/restoring method thereof
DE102006047563B4 (en) * 2006-10-07 2010-06-10 Steiner, Gerd Procedure for replacing fully closed ropes of steel cable or composite cable-stayed bridges under traffic
US20100005733A1 (en) * 2008-07-11 2010-01-14 Anderson Jay L Fractionable Cement Veneer
CN103205933A (en) * 2013-03-25 2013-07-17 河海大学 Stay cable body utilizing impressed current cathodic protection
JP2019533097A (en) 2016-07-27 2019-11-14 ソレタンシュ フレシネＳｏｌｅｔａｎｃｈｅ Ｆｒｅｙｓｓｉｎｅｔ Cable for double sheath structure
DE102016225416A1 (en) 2016-12-19 2018-06-21 Dywidag-Systems International Gmbh Method for installing a clamping element in an anchor block, holder, in particular for carrying out the method and combination of a holder with a clamping element
CA3052393C (en) 2017-02-03 2023-09-12 Soletanche Freyssinet A structural cable having an inner housing
RU2756644C1 (en) * 2017-11-03 2021-10-04 Солетанш Фрейсине Shell of a structural rope for a building, methods for installation and technical maintenance
CN112482227B (en) * 2020-11-21 2022-03-04 安徽省路港工程有限责任公司 Low-tower cable-stayed bridge cable penetrating system and method thereof
CN117904979B (en) * 2024-03-20 2024-06-11 四川公路桥梁建设集团有限公司 Cable-stayed bridge cable high-altitude suspension conveying device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2673959A1 (en) * 1991-03-12 1992-09-18 Freyssinet Int & Co Improvements to methods and devices for giving identical lengths to the various strands constituting stay cables

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2626909A1 (en) * 1988-02-05 1989-08-11 Muller Jean HAUBANE BRIDGE AND METHOD OF CONSTRUCTION
FR2661434B1 (en) * 1990-04-25 1992-12-11 Scetauroute BRIDGE COMPRISING AN APRON AND AT LEAST TWO PYLONES, AND ITS CONSTRUCTION METHOD.
US5060332A (en) * 1990-06-21 1991-10-29 H. J. G. Mclean Limited Cable stayed bridge construction
FR2667885B1 (en) * 1990-10-11 1993-01-08 Scetauroute METHOD OF CONSTRUCTING A SHAFT BRIDGE FORMED OF AN ASSEMBLY OF CUSHIONS.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2673959A1 (en) * 1991-03-12 1992-09-18 Freyssinet Int & Co Improvements to methods and devices for giving identical lengths to the various strands constituting stay cables

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"HOCHLEISTUNGSFÄHIGE SCHRÄGSEILE AUS DER SICHT DES BETONBAUERS", BETON UND STAHLBETONBAU, vol. 83, no. 12, December 1988 (1988-12-01), BERLIN DE, pages 334 - 338 *
MONTENS ET AL: "LE FRANCHISSEMENT DE L ISÈRE PAR L AUTOROUTE A49", TRAVAUX, no. 666, June 1991 (1991-06-01), PARIS FR, pages 16 - 40, XP000216585 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2858987A1 (en) * 2003-08-20 2005-02-25 Freyssinet Int Stup Suspension system guy assembling method for engineering structure, involves connecting strands to small size shuttle, and rotating shuttle around its main axis in opposite direction of entangling formed between driving and guiding units
CN106245530A (en) * 2016-08-24 2016-12-21 广西长长路桥建设有限公司 A kind of universal rod body CABLEWAY ERECTION SYSTEM removes engineering method
CN113529571A (en) * 2021-07-26 2021-10-22 中铁一局集团(广州)建设工程有限公司 Positioning device for rhombic wire-separating pipe cable saddle of short-tower cable-stayed bridge

Also Published As

Publication number Publication date
US5461743A (en) 1995-10-31
ATE147813T1 (en) 1997-02-15
JPH06299517A (en) 1994-10-25
FR2702782B1 (en) 1995-06-02
GR3022373T3 (en) 1997-04-30
BR9305229A (en) 1994-10-18
EP0616079B1 (en) 1997-01-15
TW248579B (en) 1995-06-01
KR940021836A (en) 1994-10-19
JP3501170B2 (en) 2004-03-02
DE69401448D1 (en) 1997-02-27
HK1000352A1 (en) 1998-03-06
NO940967D0 (en) 1994-03-17
FR2702782A1 (en) 1994-09-23
NO940967L (en) 1994-09-19

Similar Documents

Publication Publication Date Title
EP0616079B1 (en) Process and apparatus for placing parallel wire strands in cable-stayed bridges
CA2593867C (en) Method for disassembling a tensioned cable, related system and devices
FR3046615A3 (en) BRIDGE SYSTEM
EP0009451A1 (en) Telescopic mast
FR2849070A1 (en) Method of assembly for suspension bridge guy cable has additional cable strands threaded into sheath and tensioned between anchor zones
EP0654562A1 (en) Process and apparatus for installing discontinuous covering around cables and cables covered thereby
FR2756551A1 (en) METHOD AND DEVICE FOR MOUNTING THE TIE RODS OF TOWER CRANE BOOMS
FR2487410A1 (en) Climbing shutter for casting concrete wall - has single jack to raise brackets retaining shutter sections on shoes detachably fixed to wall
FR2858987A1 (en) Suspension system guy assembling method for engineering structure, involves connecting strands to small size shuttle, and rotating shuttle around its main axis in opposite direction of entangling formed between driving and guiding units
EP0360702B1 (en) Collapsible crane with a jib comprising two or three elements articulating upon one another
EP0612899B1 (en) Scaffolding-platform and method for erecting scaffolds with such platform
FR2683516A1 (en) MATERIALS LIFT.
EP3733997B1 (en) Removable roof device
EP1932983A1 (en) Support assembly for a roof element, shelter including such a support assembly and method for assembling such a shelter
EP0343285A1 (en) Cord unrolling device for tomato culture
FR2955135A1 (en) Post e.g. vertical central post, for light shelter, has joint that is arranged such that joint is removable, where lower end of post is articulated around transversal axis on mounting ring using joint
EP0439399A1 (en) Modular unit for making prestressed concrete products
FR2526840A1 (en) TRI-DIRECTIONAL DISPLACEMENT BOOM FOR ANY INTERVENTION ON FRAMEWORK, IN PARTICULAR METALLIC
FR3092086A1 (en) Anchoring system for securing an aircraft
FR2650815A1 (en) Equipment for visually inspecting the faces and walls of a large construction
EP0214028B1 (en) Method for the realization of a windscreen and waggon for carrying out said method
FR2717024A1 (en) TV camera aerial view method e.g. for sport stadium
FR2636616A1 (en) Folding crane with a gib having two or three mutually articulated elements.
EP0342090A1 (en) Prestressed semi-finished concrete element and production equipment
FR2702099A1 (en) Device for pulling and winding a cable, especially for telecommunications

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES GB GR IE IT LI LU MC NL PT SE

17P Request for examination filed

Effective date: 19950317

17Q First examination report despatched

Effective date: 19951214

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES GB GR IE IT LI LU MC NL PT SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19970115

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19970115

Ref country code: DK

Effective date: 19970115

Ref country code: AT

Effective date: 19970115

REF Corresponds to:

Ref document number: 147813

Country of ref document: AT

Date of ref document: 19970215

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO MILANO S.P.A.

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: KELLER & PARTNER PATENTANWAELTE AG

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19970125

REF Corresponds to:

Ref document number: 69401448

Country of ref document: DE

Date of ref document: 19970227

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: 71581

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970316

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GR

Payment date: 19970321

Year of fee payment: 4

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970331

Ref country code: LI

Effective date: 19970331

Ref country code: CH

Effective date: 19970331

Ref country code: BE

Effective date: 19970331

REG Reference to a national code

Ref country code: GR

Ref legal event code: FG4A

Free format text: 3022373

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19970415

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19970416

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
BERE Be: lapsed

Owner name: FREYSSINET INTERNATIONAL ET CIE

Effective date: 19970331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Effective date: 19970930

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980316

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980930

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19980316

REG Reference to a national code

Ref country code: PT

Ref legal event code: MM4A

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 19980930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050316

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970316