EP1181422A1 - Device for anchoring a structural cable - Google Patents

Device for anchoring a structural cable

Info

Publication number
EP1181422A1
EP1181422A1 EP00936978A EP00936978A EP1181422A1 EP 1181422 A1 EP1181422 A1 EP 1181422A1 EP 00936978 A EP00936978 A EP 00936978A EP 00936978 A EP00936978 A EP 00936978A EP 1181422 A1 EP1181422 A1 EP 1181422A1
Authority
EP
European Patent Office
Prior art keywords
cable
guide member
guide
tube
anchoring
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
EP00936978A
Other languages
German (de)
French (fr)
Other versions
EP1181422B1 (en
Inventor
Jean-Philippe Fuzier
Jérôme Stubler
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.)
Soletanche Freyssinet 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
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Application filed by Freyssinet International STUP SA filed Critical Freyssinet International STUP SA
Publication of EP1181422A1 publication Critical patent/EP1181422A1/en
Application granted granted Critical
Publication of EP1181422B1 publication Critical patent/EP1181422B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/39—Cord and rope holders
    • Y10T24/3909—Plural-strand cord or rope

Definitions

  • the present invention relates to devices used for anchoring structural cables used in the construction of engineering structures. It applies in particular to guy lines, prestressing cables and cables for suspension bridges.
  • the shrouds are cables generally intended to transmit tensile forces between two points of a structure where they are anchored. They are therefore in theory rectilinear if we neglect the external effects which tend to curve their trajectory.
  • the constitution of the anchors is generally such that only the tensile force is taken up satisfactorily.
  • the local bending moments caused by the angular deviations mentioned above which could request the anchor are filtered by means of a continuous or isolated guide at the outlet of the anchor and located at an adequate distance to be sufficiently effective.
  • the principle of anchoring is based on the individual wedging of each of the strands constituting the cable. This imposes a certain transverse spacing of the strands at the level of the anchoring block in order to have enough space to arrange the individual wedging means which are generally jaws with frustoconical keys.
  • a diverter gathers the strands in a compact arrangement at a certain distance from the anchor, in order to minimize the overall cross section of the guy line in the current part.
  • the guide which filters the bending moments is located at the level of the deflector which gathers the strands in compact formation (see for example EP-A-0 323 285).
  • the relatively large distance between the guide and the anchoring block (typically more than a meter) is necessary to limit the excessive angular deviations of each strand, which could damage it and become would result in additional bending moments at the anchor block.
  • resuming the bending moments too close to the anchor would allow significant transverse forces to remain at the level of the anchor block.
  • GB-A-2 157 339 describes a stay anchoring device in which a diverter is mounted in two parts in a tube integral with the anchoring block.
  • the part furthest from the anchor block avoids contact of the external strands with the tube, while the part closest to the anchor block prevents the strands from rubbing together when cyclic loads are applied to the stay cable.
  • the bending moments, to which the document does not pay particular attention, are essentially taken up at the part of the deflector furthest from the anchoring block.
  • the shroud crosses downstream of the anchor an orifice which widens towards the main part, and which allows an overall angular deviation of the shroud by taking up the bending forces over the length of the stay zone of the stay cable in the hole (see for example GB-A-2 097 835).
  • An object of the present invention is to provide an anchoring system which limits the bending stresses of the cable to admissible values as soon as it leaves the anchoring. Another object is to possibly make it possible to dispense with an additional external device to take up the bending forces due to variations in the trajectory of the cable.
  • the invention thus provides a device for anchoring a structural cable, comprising an anchoring block traversed by orifices each receiving a strand of the cable and a means for blocking said strand, a support piece for the block anchoring, and means for guiding the strands between the anchoring block and a running part of the cable, connected to the support piece and comprising for each strand of the cable an individual guide conduit allowing angular deviation.
  • Each guide duct flares towards the current part of the cable.
  • the guide conduits have a transverse distribution in the direction of the anchor block aligned with that of the orifices of the anchor block.
  • each guide duct widens in the direction of the current part of the cable according to a radius of curvature which is substantially constant in a plane passing through the axis of said duct.
  • the guide means comprise at least one guide member housed in a tube connected to the support piece, through which the strand guide conduits are formed.
  • the guide member can be located just behind the anchor block, or be spaced a certain distance from the anchor block. In the latter case, provision can be made for the strands of the cable to be individually protected strands in the running part, the individual protection of each strand being interrupted in a chamber located between the guide member and the anchoring block, with sealing means placed between said chamber and the guide member in order to form a sealed separation between the chamber and the running part of the cable and to contain a filling and protective product injected inside the chamber.
  • the device optionally includes a second guide member located between the anchoring block and the sealing means.
  • the guide member may be made of a rigid or deformable material. In the latter case, it is advantageous to leave a clearance, in the direction of the current part of the cable, between the circumference of the guide member and the tube in which it is housed, in order to allow an angular deviation of the set of cable strands by deformation of the material of the guide member.
  • the shape of this game is optimized to provide a regular curvature.
  • the play may result from a flaring of the inner face of the tube in the direction of the current part of the cable, according to a radius of curvature substantially constant in a plane passing through the axis of the tube.
  • the play may result from a narrowing of the periphery of the guide member in the direction of the current part of the cable, according to a radius of curvature substantially constant in a plane passing through the axis of the tube.
  • the play results in part from a narrowing of the periphery of the guide member in the direction of the current part of the cable, and partly a flare of the inner face of the tube towards the current part of the cable.
  • the deformable guide member has a viscosity, in order to provide damping of the cable when the latter oscillates.
  • This viscosity can be intrinsic to the deformable material of the organ, and / or result from a viscous substance contained in cavities formed in this organ.
  • the deformable guide member may comprise, between the guide conduits, inserts of decreasing inertia in the direction of the current part of the cable, which makes it possible to control the curvature undergone by the cable through the member.
  • the tube in which the deformable guide member is housed may have a decreasing inertia in the direction of the current part of the cable.
  • FIG. 1 to 4 are schematic views in longitudinal section of anchoring devices produced in accordance with the invention.
  • FIG. 5 is a longitudinal sectional view of an embodiment of a guide member.
  • the shroud anchored by means of one of the devices described below by way of example consists of a bundle of strands 1, only one of which is drawn in FIG. 1.
  • the strands 1 are of the type individually protected: the assembly of stranded metal wires is coated with a product protecting against corrosion (for example a grease) and contained in an individual sheath 2 of plastic material (for example a high density polyethylene (HDPE)).
  • the anchoring device comprises an anchoring block 3 applied against a support piece 4 along a surface substantially perpendicular to the general direction of the stay. The support piece 4 is applied, opposite the anchor block 3 against the structural element to which the guy wire is attached.
  • the anchoring block 3 is crossed by orifices 5 which have a frustoconical profile which widens towards the face of the block opposite to the support piece 4.
  • Each of the orifices 5 receives a strand 1 as well as a frustoconical jaw 6 who stuck the strand in the hole.
  • the individual protection of each strand in the running part is interrupted in a chamber 7 located behind the anchoring block 3.
  • the jaws 6 directly grip the metal wires of the strands.
  • a filling product for example petroleum wax, grease or resin
  • the end of the chamber 7 opposite the anchoring block 3 is closed by a sealing device 8 which makes sealing around each sheathed strand 1 and at the level of the internal face of the cylindrical tube 10 which delimits the chamber 7.
  • the sealing device 8 can in particular be of stuffing box type, as described in application EP-A- 0 323285.
  • a deflecting member 11 gathers the strands 1 in a more compact formation than in the anchoring, in order to minimize the overall cross section of the shroud in the running part. There is therefore a slight angular convergence of the strands 1 of the anchoring device towards the deflecting member 11.
  • the anchoring device shown in Figure 1 comprises a guide member 12 housed inside the aforementioned tube 10.
  • This tube 10 is connected to the support piece 4. It can for example be in one piece with this piece 4, as shown, or with the pieces 4 and 3, or even fixed to an anchoring yoke.
  • the guide member 12 is constituted by a rigid cylindrical block (for example made of HDPE) inserted substantially without play in the tube 10.
  • Individual conduits 13 are formed in this block 12 to allow passage and guide each of the strands 1.
  • the conduits 13 are circular with a diameter corresponding to that of the individually protected strands 1, and their transverse distribution is the same as that of the orifices 5 in the anchoring block 3.
  • each guide duct 13 In the direction of the running part of the shroud, each guide duct 13, whose general shape is of revolution, flares according to a profile which, in a plane passing through the axis of the duct, has a constant radius of curvature R.
  • This curvature allows the angular deflection of the strand towards the deflecting member 11, and also authorizes overall bending movements of the shroud.
  • the bending moments are taken up by the guide member 12 over the length of the zone where the strand 1 is in contact with the wall of its duct.
  • the guide member 15, 17 is made of a deformable material such as "Neoprene".
  • This material can advantageously have visco-elastic properties in order to participate in the damping of the vibrations of the cable, the viscosity providing a dissipation of the vibratory energy.
  • the conduits 16 formed for the strands in the guide member made of deformable material 15, 17 widen towards the main part of the stay cable with a radius of curvature R 2 which may be greater than the radius R of the embodiment according to FIG. 1.
  • This radius R 2 is determined as a function of the angular deviation due to the convergence of the strands towards the deflecting member 11.
  • this angular deviation may correspond to a tangent of the order of 2% , the radius R2 and the axial length L of the guide member then being chosen so that the half-angle of the mouth of the conduit 16 towards the main part of the stay has a tangent slightly greater than 2%.
  • a clearance J is present between the internal face of the tube 10 and the periphery of the guide member 15, 17 in the direction of the current part of the stay cable. , and this over the entire circumference of the member 15, 17. Thanks to this clearance J, the material of the member 15, 17 can deform overall by following the bending movements of the stay.
  • the clearance J is preferably defined by a curvature of constant radius
  • This radius R. is determined, with the length L, depending on the extent of the flexions to which the shroud can be subjected.
  • R 3 a maximum radius of curvature defined by a combination of R 1 and R 2 , such that R 3 ⁇ R-
  • This radius R 3 can be of the same order as the radius R of FIG. 1. In the example of FIG.
  • the curvature of radius R 1 is formed on the internal face of revolution of the tube 10, which widens in the direction of the running part of the stay, the periphery of the guide member 15 being cylindrical.
  • the curvature of radius Ri is defined on the periphery of revolution of the guide member made of deformable material 17, which narrows in the direction of the current part of the shroud, the internal face of the tube 10 being cylindrical.
  • the clearance J results from a combination of curvatures of the internal face of the tube 10 (FIG. 2) and of the periphery of the member made of deformable material (FIG. 3).
  • the guide means comprise two members made of deformable material, one 20 placed between the anchoring block 3 and the sealing device 8, and the other 22 placed beyond the sealing device 8.
  • Each guide duct receiving a strand then comprises a cylindrical portion 21, of diameter corresponding to that of the strand, formed in the member 20, and a portion 23 formed in the member 22 and which widens towards the running part of the shroud according to the radius of curvature R 2 .
  • the member 20 is housed in the cylindrical tube 10, which holds it in place on the side of the block 3. Towards the main part, the periphery of the member 20 tightens according to the radius of curvature R- j in order to resume movement bending.
  • the member 22, which can be fixed to the sealing device 8, comprises the portions of conduit 23 which widen along the radius of curvature R 2 towards the main part to allow the strands to converge towards the deflecting member 11.
  • the clearance J is created in the same mode as in FIG. 3, by curvature towards the inside of the periphery of the deformable member.
  • the clearance J could be created, in whole or in part, by an outward curvature (according to FIG. 2) of the inner face of the tube 10 in line with the member 20 adjacent to the anchoring block .
  • the tube connected to the support piece 4 has two successive portions 10a, 10b.
  • the cylindrical portion 10a contains the sealing device.
  • the portion 10b mounted in cantilever, contains the deformable guide member 15 which may have a constitution similar to that of FIG. 2.
  • the inertia of this portion 10b decreases in the direction of the current part of the shroud, which allows progressive bending of the cable and of the guide member.
  • the decreasing inertia is made by reducing the thickness of the wall of the tube portion 10b (we could also play on the properties of the material).
  • the progressive bending of the cable and of the deformable guide member 25 results from the decreasing inertia, in the direction of the current part of the stay, of inserts 27 placed in the deformable material between the conduits guide 26.
  • inserts 27 are for example metallic and tapered. They can be connected to a common support located on the side of the member 25 directed towards the anchoring block.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Piles And Underground Anchors (AREA)
  • Flexible Shafts (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Ropes Or Cables (AREA)

Abstract

A device having an anchor block having orifices therethrough, each accommodating a tendon of the cable and a means of immobilizing the tendon. The device further includes a bearing piece for the anchor block, and means of guiding the tendons between the anchor block and a running part of the cable. The guide means are connected to the bearing piece and include an individual guide passage for each tendon of the cable, allowing angular deviation thereof. Each guide passages have, in the direction of the anchor block, a transverse layout aligned with that of the orifices in the anchor block.

Description

DISPOSITIF D'ANCRAGE D'UN CABLE DE STRUCTURE DEVICE FOR ANCHORING A STRUCTURAL CABLE
La présente invention concerne les dispositifs employés pour ancrer des câbles de structure utilisés dans la construction d'ouvrages d'art. Elle s'applique notamment aux haubans, aux câbles de précontrainte et aux câbles de ponts suspendus.The present invention relates to devices used for anchoring structural cables used in the construction of engineering structures. It applies in particular to guy lines, prestressing cables and cables for suspension bridges.
Les haubans sont des câbles généralement prévus pour transmettre des efforts de traction entre deux points d'une structure où ils sont ancrés. Ils sont donc en théorie rectilignes si on néglige les effets extérieurs qui tendent à incurver leur trajectoire. L'effet de chaînette dû au poids propre du hauban, l'effet du ventThe shrouds are cables generally intended to transmit tensile forces between two points of a structure where they are anchored. They are therefore in theory rectilinear if we neglect the external effects which tend to curve their trajectory. The chain effect due to the self weight of the shroud, the effect of the wind
(pression transversale extérieure), les légers mouvements de rotation des éléments de construction supportant les ancrages du hauban, les effets des variations de température sont des facteurs entraînant des déviations angulaires aux extrémités des haubans, c'est-à-dire à la sortie des ancrages. Pour les autres câbles, des déviations importantes en sortie d'ancrage sont également possibles à cause du tracé qui leur est imposé ou des actions transversales qu'ils subissent.(external transverse pressure), the slight rotational movements of the construction elements supporting the anchorages of the stay cables, the effects of temperature variations are factors causing angular deviations at the ends of the stay cables, that is to say at the exit of the anchors. For other cables, significant deviations at the anchor outlet are also possible because of the route imposed on them or the transverse actions they undergo.
La constitution des ancrages est en général telle qu'uniquement l'effort de traction est repris de façon satisfaisante. Les moments de flexion locale provoqués par les déviations angulaires mentionnées ci-dessus qui pourraient solliciter l'ancrage sont filtrés au moyen d'un guide continu ou isolé à la sortie de l'ancrage et situé à une distance adéquate pour être suffisamment efficace.The constitution of the anchors is generally such that only the tensile force is taken up satisfactorily. The local bending moments caused by the angular deviations mentioned above which could request the anchor are filtered by means of a continuous or isolated guide at the outlet of the anchor and located at an adequate distance to be sufficiently effective.
Le principe de l'ancrage est fondé sur le coincement individuel de chacun des brins constituant le câble. Ceci impose un certain espacement transversal des brins au niveau du bloc d'ancrage pour avoir assez de place pour disposer les moyens de coincement individuel qui sont généralement des mors à clavettes tronconiques.The principle of anchoring is based on the individual wedging of each of the strands constituting the cable. This imposes a certain transverse spacing of the strands at the level of the anchoring block in order to have enough space to arrange the individual wedging means which are generally jaws with frustoconical keys.
Dans le cas des haubans, un déviateur rassemble les brins en une disposition compacte à une certaine distance de l'ancrage, afin de minimiser la section transversale globale du hauban dans la partie courante. En général, le guide qui filtre les moments de flexion est situé au niveau du déviateur qui rassemble les brins en formation compacte (voir par exemple EP-A-0 323 285). La distance relativement grande entre le guide et le bloc d'ancrage (typiquement plus d'un mètre) est nécessaire pour limiter les déviations angulaires excessives de chaque brin, qui risqueraient de l'endommager et se traduiraient par des moments de flexion supplémentaires au niveau du bloc d'ancrage. De plus, reprendre les moments de flexion trop près de l'ancrage laisserait subsister des efforts transversaux significatifs au niveau du bloc d'ancrage. GB-A-2 157 339 décrit un dispositif d'ancrage de hauban dans lequel un déviateur est monté en deux parties dans un tube solidaire du bloc d'ancrage. La partie la plus éloignée du bloc d'ancrage évite le contact des torons externes avec le tube, tandis que la partie la plus proche du bloc d'ancrage évite le frottement des torons entre eux lorsque des charges cycliques sont appliquées au hauban. Les moments de flexion, auxquels le document ne porte pas d'attention particulière, sont essentiellement repris au niveau de la partie du déviateur la plus éloignée du bloc d'ancrage.In the case of guy lines, a diverter gathers the strands in a compact arrangement at a certain distance from the anchor, in order to minimize the overall cross section of the guy line in the current part. In general, the guide which filters the bending moments is located at the level of the deflector which gathers the strands in compact formation (see for example EP-A-0 323 285). The relatively large distance between the guide and the anchoring block (typically more than a meter) is necessary to limit the excessive angular deviations of each strand, which could damage it and become would result in additional bending moments at the anchor block. In addition, resuming the bending moments too close to the anchor would allow significant transverse forces to remain at the level of the anchor block. GB-A-2 157 339 describes a stay anchoring device in which a diverter is mounted in two parts in a tube integral with the anchoring block. The part furthest from the anchor block avoids contact of the external strands with the tube, while the part closest to the anchor block prevents the strands from rubbing together when cyclic loads are applied to the stay cable. The bending moments, to which the document does not pay particular attention, are essentially taken up at the part of the deflector furthest from the anchoring block.
Dans d'autres dispositions, le hauban traverse en aval de l'ancrage un orifice qui s'évase en direction de la partie courante, et qui autorise une déviation angulaire d'ensemble du hauban en reprenant les efforts de flexion sur la longueur de la zone d'appui du hauban dans l'orifice (voir par exemple GB-A-2 097 835).In other arrangements, the shroud crosses downstream of the anchor an orifice which widens towards the main part, and which allows an overall angular deviation of the shroud by taking up the bending forces over the length of the stay zone of the stay cable in the hole (see for example GB-A-2 097 835).
Un but de la présente invention est de proposer un système d'ancrage qui limite les contraintes de flexion du câble dans des valeurs admissibles dès la sortie de l'ancrage. Un autre but est de permettre éventuellement de se dispenser d'un dispositif extérieur complémentaire pour reprendre les efforts de flexion dus aux variations de trajectoire du câble.An object of the present invention is to provide an anchoring system which limits the bending stresses of the cable to admissible values as soon as it leaves the anchoring. Another object is to possibly make it possible to dispense with an additional external device to take up the bending forces due to variations in the trajectory of the cable.
L'invention propose ainsi un dispositif d'ancrage d'un câble de structure, comprenant un bloc d'ancrage traversé par des orifices recevant chacun un brin du câble et un moyen de blocage dudit brin, une pièce d'appui pour le bloc d'ancrage, et des moyens de guidage des brins entre le bloc d'ancrage et une partie courante du câble, reliés à la pièce d'appui et comportant pour chaque brin du câble un conduit de guidage individuel autorisant une déviation angulaire. Chaque conduit de guidage s'évase en direction de la partie courante du câble. Les conduits de guidage présentent en direction du bloc d'ancrage une répartition transversale alignée avec celle des orifices du bloc d'ancrage.The invention thus provides a device for anchoring a structural cable, comprising an anchoring block traversed by orifices each receiving a strand of the cable and a means for blocking said strand, a support piece for the block anchoring, and means for guiding the strands between the anchoring block and a running part of the cable, connected to the support piece and comprising for each strand of the cable an individual guide conduit allowing angular deviation. Each guide duct flares towards the current part of the cable. The guide conduits have a transverse distribution in the direction of the anchor block aligned with that of the orifices of the anchor block.
On simplifie largement la conception globale de l'ancrage en associant directement les moyens de guidage au dispositif d'ancrage. Les brins du câble sont guidés individuellement, de sorte que l'inertie de l'élément fléchissant est sensiblement inférieure à l'inertie d'ensemble du câble. Il en résulte un filtrage efficace des moments de flexion au niveau du bloc d'ancrage, même si la distance entre le bloc d'ancrage et les moyens de guidage est relativement faible. Le guidage individuel des brins évite le cumul des efforts transversaux des couches de brins les unes sur les autres. Avantageusement, chaque conduit de guidage s'évase en direction de la partie courante du câble selon un rayon de courbure sensiblement constant dans un plan passant par l'axe dudit conduit.The overall design of the anchor is greatly simplified by directly associating the guide means with the anchor device. The strands of the cable are individually guided, so that the inertia of the bending element is substantially less than the overall inertia of the cable. This results in filtering effective bending moments at the anchor block, even if the distance between the anchor block and the guide means is relatively small. The individual guidance of the strands avoids the cumulation of the transverse forces of the layers of strands on one another. Advantageously, each guide duct widens in the direction of the current part of the cable according to a radius of curvature which is substantially constant in a plane passing through the axis of said duct.
Dans un agencement préféré du dispositif, les moyens de guidage comprennent au moins un organe de guidage logé dans un tube relié à la pièce d'appui, à travers lequel sont formés les conduits de guidage des brins.In a preferred arrangement of the device, the guide means comprise at least one guide member housed in a tube connected to the support piece, through which the strand guide conduits are formed.
L'organe de guidage peut être situé juste derrière le bloc d'ancrage, ou être espacé d'une certaine distance du bloc d'ancrage. Dans ce dernier cas, on peut prévoir que les brins du câble soient des torons individuellement protégés dans la partie courante, la protection individuelle de chaque brin étant interrompue dans une chambre située entre l'organe de guidage et le bloc d'ancrage, avec des moyens d'étanchéité placés entre ladite chambre et l'organe de guidage afin de former une séparation étanche entre la chambre et la partie courante du câble et de contenir un produit de remplissage et de protection injecté à l'intérieur de la chambre. Le dispositif comprend éventuellement un second organe de guidage situé entre le bloc d'ancrage et les moyens d'étanchéité.The guide member can be located just behind the anchor block, or be spaced a certain distance from the anchor block. In the latter case, provision can be made for the strands of the cable to be individually protected strands in the running part, the individual protection of each strand being interrupted in a chamber located between the guide member and the anchoring block, with sealing means placed between said chamber and the guide member in order to form a sealed separation between the chamber and the running part of the cable and to contain a filling and protective product injected inside the chamber. The device optionally includes a second guide member located between the anchoring block and the sealing means.
L'organe de guidage peut être en un matériau rigide ou déformable. Dans ce dernier cas, il est avantageux de laisser un jeu, en direction de la partie courante du câble, entre la circonférence de l'organe de guidage et le tube dans lequel il est logé, afin d'autoriser une déviation angulaire de l'ensemble des brins du câble par déformation du matériau de l'organe de guidage. La forme de ce jeu est optimisée de manière à procurer une courbure régulière. Lorsque l'organe de guidage a une périphérie cylindrique, le jeu peut résulter d'un évasement de la face intérieure du tube en direction de la partie courante du câble, selon un rayon de courbure sensiblement constant dans un plan passant par l'axe du tube. Lorsque le tube a une face intérieure cylindrique, le jeu peut résulter d'un rétrécissement de la périphérie de l'organe de guidage en direction de la partie courante du câble, selon un rayon de courbure sensiblement constant dans un plan passant par l'axe du tube. Une autre possibilité est que le jeu résulte en partie d'un rétrécissement de la périphérie de l'organe de guidage en direction de la partie courante du câble, et en partie d'un évasement de la face intérieure du tube en direction de la partie courante du câble.The guide member may be made of a rigid or deformable material. In the latter case, it is advantageous to leave a clearance, in the direction of the current part of the cable, between the circumference of the guide member and the tube in which it is housed, in order to allow an angular deviation of the set of cable strands by deformation of the material of the guide member. The shape of this game is optimized to provide a regular curvature. When the guide member has a cylindrical periphery, the play may result from a flaring of the inner face of the tube in the direction of the current part of the cable, according to a radius of curvature substantially constant in a plane passing through the axis of the tube. When the tube has a cylindrical inner face, the play may result from a narrowing of the periphery of the guide member in the direction of the current part of the cable, according to a radius of curvature substantially constant in a plane passing through the axis of the tube. Another possibility is that the play results in part from a narrowing of the periphery of the guide member in the direction of the current part of the cable, and partly a flare of the inner face of the tube towards the current part of the cable.
Avantageusement, l'organe de guidage déformable présente une viscosité, afin de procurer un amortissement du câble lorsque celui-ci oscille. Cette viscosité peut être intrinsèque au matériau déformable de l'organe, et/ou résulter d'une substance visqueuse contenue dans des cavités ménagées dans cet organe.Advantageously, the deformable guide member has a viscosity, in order to provide damping of the cable when the latter oscillates. This viscosity can be intrinsic to the deformable material of the organ, and / or result from a viscous substance contained in cavities formed in this organ.
L'organe de guidage déformable peut comporter, entre les conduits de guidage, des inserts d'inertie décroissante en direction de la partie courante du câble, ce qui permet de contrôler la courbure subie par le câble à travers l'organe. En variante, le tube dans lequel est logé l'organe de guidage déformable peut présenter une inertie décroissante en direction de la partie courante du câble.The deformable guide member may comprise, between the guide conduits, inserts of decreasing inertia in the direction of the current part of the cable, which makes it possible to control the curvature undergone by the cable through the member. Alternatively, the tube in which the deformable guide member is housed may have a decreasing inertia in the direction of the current part of the cable.
D'autres particularités et avantages de la présente invention apparaîtront dans la description ci-après d'exemples de réalisation non limitatifs, en référence aux dessins annexés, dans lesquels :Other features and advantages of the present invention will appear in the following description of nonlimiting exemplary embodiments, with reference to the appended drawings, in which:
- les figures 1 à 4 sont des vues schématiques en coupe longitudinale de dispositifs d'ancrage réalisés conformément à l'invention ; et- Figures 1 to 4 are schematic views in longitudinal section of anchoring devices produced in accordance with the invention; and
- la figure 5 est une vue en coupe longitudinale d'une forme de réalisation d'un organe de guidage.- Figure 5 is a longitudinal sectional view of an embodiment of a guide member.
L'invention est décrite ci-après dans son application aux haubans, sans que ceci soit limitatif.The invention is described below in its application to guy lines, without this being limiting.
Le hauban ancré au moyen d'un des dispositifs décrits ci-après à titre d'exemple est constitué par un faisceau de torons 1 dont un seul est dessiné sur la figure 1. Dans l'exemple considéré ici, les torons 1 sont de type individuellement protégé : l'assemblage de fils métalliques toronnés est enrobé d'un produit protégeant contre la corrosion (par exemple une graisse) et contenu dans une gaine individuelle 2 en matière plastique (par exemple un polyéthylène à haute densité (PEHD)). Le dispositif d'ancrage comprend un bloc d'ancrage 3 appliqué contre une pièce d'appui 4 suivant une surface sensiblement perpendiculaire à la direction générale du hauban. La pièce d'appui 4 est appliquée, à l'opposé du bloc d'ancrage 3 contre l'élément de structure auquel est assujetti le hauban.The shroud anchored by means of one of the devices described below by way of example consists of a bundle of strands 1, only one of which is drawn in FIG. 1. In the example considered here, the strands 1 are of the type individually protected: the assembly of stranded metal wires is coated with a product protecting against corrosion (for example a grease) and contained in an individual sheath 2 of plastic material (for example a high density polyethylene (HDPE)). The anchoring device comprises an anchoring block 3 applied against a support piece 4 along a surface substantially perpendicular to the general direction of the stay. The support piece 4 is applied, opposite the anchor block 3 against the structural element to which the guy wire is attached.
Le bloc d'ancrage 3 est traversé par des orifices 5 qui présentent un profil tronconique qui s'évase vers la face du bloc opposée à la pièce d'appui 4. Chacun des orifices 5 reçoit un toron 1 ainsi qu'un mors tronconique 6 qui réalise le coincement du toron dans l'orifice.The anchoring block 3 is crossed by orifices 5 which have a frustoconical profile which widens towards the face of the block opposite to the support piece 4. Each of the orifices 5 receives a strand 1 as well as a frustoconical jaw 6 who stuck the strand in the hole.
Pour réaliser un ancrage fiable du toron individuellement protégé, la protection individuelle de chaque toron dans la partie courante est interrompue dans une chambre 7 située en arrière du bloc d'ancrage 3. Ainsi, les mors 6 agrippent directement les fils métalliques des torons. Pour protéger contre la corrosion le métal des torons dans la chambre 7 et dans le bloc d'ancrage 3, un produit de remplissage (par exemple une cire pétrolière, une graisse ou une résine) est injecté dans la chambre 7 et dans les interstices laissés libres entre les torons et le bloc 3. Pour éviter que ce produit de remplissage se propage vers la partie courante du hauban, l'extrémité de la chambre 7 opposée au bloc d'ancrage 3 est fermée par un dispositif d'étanchéité 8 qui réalise l'étanchéité autour de chaque toron gainé 1 et au niveau de la face interne du tube cylindrique 10 qui délimite la chambre 7. Le dispositif d'étanchéité 8 peut notamment être de type presse-étoupe, comme décrit dans la demande EP-A-0 323285.To achieve reliable anchoring of the individually protected strand, the individual protection of each strand in the running part is interrupted in a chamber 7 located behind the anchoring block 3. Thus, the jaws 6 directly grip the metal wires of the strands. To protect the metal of the strands in the chamber 7 and in the anchoring block 3 from corrosion, a filling product (for example petroleum wax, grease or resin) is injected into the chamber 7 and into the gaps left free between the strands and the block 3. To prevent this filling product from spreading towards the running part of the stay, the end of the chamber 7 opposite the anchoring block 3 is closed by a sealing device 8 which makes sealing around each sheathed strand 1 and at the level of the internal face of the cylindrical tube 10 which delimits the chamber 7. The sealing device 8 can in particular be of stuffing box type, as described in application EP-A- 0 323285.
A une certaine distance du dispositif d'ancrage, un organe déviateur 11 rassemble les torons 1 en formation plus compacte que dans l'ancrage, afin de minimiser la section transversale globale du hauban dans la partie courante. Il y a donc une légère convergence angulaire des torons 1 du dispositif d'ancrage vers l'organe déviateur 11.At a certain distance from the anchoring device, a deflecting member 11 gathers the strands 1 in a more compact formation than in the anchoring, in order to minimize the overall cross section of the shroud in the running part. There is therefore a slight angular convergence of the strands 1 of the anchoring device towards the deflecting member 11.
Le dispositif d'ancrage représenté sur la figure 1 comporte un organe de guidage 12 logé à l'intérieur du tube 10 précité. Ce tube 10 est relié à la pièce d'appui 4. Il peut par exemple être d'un seul tenant avec cette pièce 4, comme représenté, ou avec les pièces 4 et 3, ou encore fixé à une chape d'ancrage.The anchoring device shown in Figure 1 comprises a guide member 12 housed inside the aforementioned tube 10. This tube 10 is connected to the support piece 4. It can for example be in one piece with this piece 4, as shown, or with the pieces 4 and 3, or even fixed to an anchoring yoke.
Dans l'exemple de la figure 1 , l'organe de guidage 12 est constitué par un bloc cylindrique rigide (par exemple en PEHD) inséré sensiblement sans jeu dans le tube 10. Des conduits individuels 13 sont formés dans ce bloc 12 pour laisser passer et guider chacun des torons 1. Du côté dirigé vers le bloc d'ancrage 3 (ce côté est situé juste derrière la face arrière du dispositif d'étanchéité 8 dans l'exemple représenté), les conduits 13 sont circulaires avec un diamètre correspondant à celui des torons individuellement protégés 1 , et leur répartition transversale est la même que celle des orifices 5 dans le bloc d'ancrage 3. En direction de la partie courante du hauban, chaque conduit de guidage 13, dont la forme générale est de révolution, s'évase suivant un profil qui, dans un plan passant par l'axe du conduit, présente un rayon de courbure constant R. Cette courbure permet la déviation angulaire du toron vers l'organe déviateur 11 , et autorise en outre des mouvements de flexion globale du hauban. Les moments de flexion sont repris par l'organe de guidage 12 sur la longueur de la zone où le toron 1 est en contact avec la paroi de son conduit.In the example of FIG. 1, the guide member 12 is constituted by a rigid cylindrical block (for example made of HDPE) inserted substantially without play in the tube 10. Individual conduits 13 are formed in this block 12 to allow passage and guide each of the strands 1. On the side directed towards the anchoring block 3 (this side is located just behind the rear face of the sealing device 8 in the example shown), the conduits 13 are circular with a diameter corresponding to that of the individually protected strands 1, and their transverse distribution is the same as that of the orifices 5 in the anchoring block 3. In the direction of the running part of the shroud, each guide duct 13, whose general shape is of revolution, flares according to a profile which, in a plane passing through the axis of the duct, has a constant radius of curvature R. This curvature allows the angular deflection of the strand towards the deflecting member 11, and also authorizes overall bending movements of the shroud. The bending moments are taken up by the guide member 12 over the length of the zone where the strand 1 is in contact with the wall of its duct.
Dans les dispositifs représentés sur les figures 2 et 3, l'organe de guidage 15, 17 est en un matériau déformable tel que du « Néoprène ». Ce matériau peut avantageusement avoir des propriétés visco-élastiques afin de participer à l'amortissement des vibrations du câble, la viscosité procurant une dissipation de l'énergie vibratoire.In the devices shown in Figures 2 and 3, the guide member 15, 17 is made of a deformable material such as "Neoprene". This material can advantageously have visco-elastic properties in order to participate in the damping of the vibrations of the cable, the viscosity providing a dissipation of the vibratory energy.
Les conduits 16 ménagés pour les torons dans l'organe de guidage en matériau déformable 15, 17 s'évasent vers la partie courante du hauban suivant un rayon de courbure R2 qui peut être plus grand que le rayon R de la forme de réalisation selon la figure 1. Ce rayon R2 est déterminé en fonction de la déviation angulaire due à la convergence des torons vers l'organe déviateur 11. A titre d'illustration, cette déviation angulaire peut correspondre à une tangente de l'ordre de 2%, le rayon R2 et la longueur axiale L de l'organe de guidage étant alors choisis pour que le demi-angle d'embouchure du conduit 16 vers la partie courante du hauban ait une tangente légèrement supérieure à 2%.The conduits 16 formed for the strands in the guide member made of deformable material 15, 17 widen towards the main part of the stay cable with a radius of curvature R 2 which may be greater than the radius R of the embodiment according to FIG. 1. This radius R 2 is determined as a function of the angular deviation due to the convergence of the strands towards the deflecting member 11. By way of illustration, this angular deviation may correspond to a tangent of the order of 2% , the radius R2 and the axial length L of the guide member then being chosen so that the half-angle of the mouth of the conduit 16 towards the main part of the stay has a tangent slightly greater than 2%.
Pour tolérer les déviations angulaires dues aux mouvements de flexion du hauban et reprendre les moments correspondants, un jeu J est présent entre la face interne du tube 10 et la périphérie de l'organe de guidage 15, 17 en direction de la partie courante du hauban, et ce sur toute la circonférence de l'organe 15, 17. Grâce à ce jeu J, la matière de l'organe 15, 17 peut se déformer globalement en suivant les mouvements de flexion du hauban.To tolerate the angular deviations due to the bending movements of the stay cable and to resume the corresponding moments, a clearance J is present between the internal face of the tube 10 and the periphery of the guide member 15, 17 in the direction of the current part of the stay cable. , and this over the entire circumference of the member 15, 17. Thanks to this clearance J, the material of the member 15, 17 can deform overall by following the bending movements of the stay.
Le jeu J est de préférence défini par une courbure de rayon constantThe clearance J is preferably defined by a curvature of constant radius
Ri (dans un plan radial passant par l'axe du tube 10) au niveau de l'interface entre la périphérie de l'organe de guidage en « Néoprène » et la face interne du tube 10. Ce rayon R., est déterminé, avec la longueur L, en fonction de l'ampleur des flexions auxquelles le hauban peut être soumis. Lorsque le hauban est dévié et que ses brins sont regroupés, ces brins ont un rayon de courbure maximal R3 défini par une combinaison de R1 et R2, telle que R3 < R-| et R3 < R2. Ce rayon R3 peut être du même ordre que le rayon R de la figure 1. Dans l'exemple de la figure 2, la courbure de rayon R1 est formée sur la face interne de révolution du tube 10, qui s'évase en direction de la partie courante du hauban, la périphérie de l'organe de guidage 15 étant cylindrique. Dans la réalisation représentée sur la figure 3, la courbure de rayon Ri est définie sur la périphérie de révolution de l'organe de guidage en matériau déformable 17, qui se rétrécit en direction de la partie courante du hauban, la face interne du tube 10 étant cylindrique.Ri (in a radial plane passing through the axis of the tube 10) at the interface between the periphery of the “Neoprene” guide member and the internal face of the tube 10. This radius R., is determined, with the length L, depending on the extent of the flexions to which the shroud can be subjected. When the stay cable is deflected and its strands are grouped together, these strands have a maximum radius of curvature R 3 defined by a combination of R 1 and R 2 , such that R 3 <R- | and R 3 <R 2 . This radius R 3 can be of the same order as the radius R of FIG. 1. In the example of FIG. 2, the curvature of radius R 1 is formed on the internal face of revolution of the tube 10, which widens in the direction of the running part of the stay, the periphery of the guide member 15 being cylindrical. In the embodiment shown in FIG. 3, the curvature of radius Ri is defined on the periphery of revolution of the guide member made of deformable material 17, which narrows in the direction of the current part of the shroud, the internal face of the tube 10 being cylindrical.
Dans une autre variante, non représentée, le jeu J résulte d'une combinaison de courbures de la face interne du tube 10 (figure 2) et de la périphérie de l'organe en matériau déformable (figure 3).In another variant, not shown, the clearance J results from a combination of curvatures of the internal face of the tube 10 (FIG. 2) and of the periphery of the member made of deformable material (FIG. 3).
Dans l'exemple de la figure 4, les moyens de guidage comportent deux organes en matériau déformable, l'un 20 placé entre le bloc d'ancrage 3 et le dispositif d'étanchéité 8, et l'autre 22 placé au-delà du dispositif d'étanchéité 8.In the example of FIG. 4, the guide means comprise two members made of deformable material, one 20 placed between the anchoring block 3 and the sealing device 8, and the other 22 placed beyond the sealing device 8.
Chaque conduit de guidage recevant un toron comporte alors une portion cylindrique 21 , de diamètre correspondant à celui du toron, formée dans l'organe 20, et une portion 23 formée dans l'organe 22 et qui s'évase vers la partie courante du hauban selon le rayon de courbure R2.Each guide duct receiving a strand then comprises a cylindrical portion 21, of diameter corresponding to that of the strand, formed in the member 20, and a portion 23 formed in the member 22 and which widens towards the running part of the shroud according to the radius of curvature R 2 .
L'organe 20 est logé dans le tube cylindrique 10, qui le maintient en place du côté du bloc 3. Vers la partie courante, la périphérie de l'organe 20 se resserre selon le rayon de courbure R-j afin de reprendre les mouvements de flexion. L'organe 22, qui peut être fixé au dispositif d'étanchéité 8, comporte les portions de conduit 23 qui s'évasent selon le rayon de courbure R2 vers la partie courante pour laisser converger les torons vers l'organe déviateur 11.The member 20 is housed in the cylindrical tube 10, which holds it in place on the side of the block 3. Towards the main part, the periphery of the member 20 tightens according to the radius of curvature R- j in order to resume movement bending. The member 22, which can be fixed to the sealing device 8, comprises the portions of conduit 23 which widen along the radius of curvature R 2 towards the main part to allow the strands to converge towards the deflecting member 11.
Dans l'exemple représenté sur la figure 4, le jeu J est créé selon le même mode que dans la figure 3, par courbure vers l'intérieur de la périphérie de l'organe déformable. Dans une variante, le jeu J pourrait être créé, en totalité ou en partie, par une courbure vers l'extérieur (selon la figure 2) de la face intérieure du tube 10 au droit de l'organe 20 adjacent au bloc d'ancrage.In the example shown in FIG. 4, the clearance J is created in the same mode as in FIG. 3, by curvature towards the inside of the periphery of the deformable member. In a variant, the clearance J could be created, in whole or in part, by an outward curvature (according to FIG. 2) of the inner face of the tube 10 in line with the member 20 adjacent to the anchoring block .
Dans la réalisation illustrée par la figure 5, le tube relié à la pièce d'appui 4 comporte deux portions successives 10a, 10b. La portion 10a, cylindrique, contient le dispositif d'étanchéité. La portion 10b, montée en porte- à-faux, contient l'organe de guidage déformable 15 qui peut avoir une constitution semblable à celle de la figure 2. L'inertie de cette portion 10b décroît en direction de la partie courante du hauban, ce qui permet une flexion progressive du câble et de l'organe de guidage. L'inertie décroissante est réalisée en diminuant l'épaisseur de la paroi de la portion de tube 10b (on pourrait aussi jouer sur les propriétés du matériau).In the embodiment illustrated in Figure 5, the tube connected to the support piece 4 has two successive portions 10a, 10b. The cylindrical portion 10a contains the sealing device. The portion 10b, mounted in cantilever, contains the deformable guide member 15 which may have a constitution similar to that of FIG. 2. The inertia of this portion 10b decreases in the direction of the current part of the shroud, which allows progressive bending of the cable and of the guide member. The decreasing inertia is made by reducing the thickness of the wall of the tube portion 10b (we could also play on the properties of the material).
Dans la variante de la figure 6, la flexion progressive du câble et de l'organe de guidage déformable 25 résulte de l'inertie décroissante, en direction de la partie courante du hauban, d'inserts 27 placés dans la matière déformable entre les conduits de guidage 26. Ces inserts 27 sont par exemple métalliques et de forme effilée. Ils peuvent être reliés à un support commun situé sur le côté de l'organe 25 dirigé vers le bloc d'ancrage. In the variant of FIG. 6, the progressive bending of the cable and of the deformable guide member 25 results from the decreasing inertia, in the direction of the current part of the stay, of inserts 27 placed in the deformable material between the conduits guide 26. These inserts 27 are for example metallic and tapered. They can be connected to a common support located on the side of the member 25 directed towards the anchoring block.

Claims

R E V E N D I C A T I O N S
1. Dispositif d'ancrage d'un câble de structure, comprenant un bloc d'ancrage (3) traversé par des orifices (5) recevant chacun un brin (1) du câble et un moyen (6) de blocage dudit brin, une pièce d'appui (4) pour le bloc d'ancrage, et des moyens (12 ; 15 ; 17 ; 20, 22 ; 25) de guidage des brins entre le bloc d'ancrage et une partie courante du câble, dans lequel les moyens de guidage sont reliés à la pièce d'appui et comportent un conduit de guidage individuel (13 ; 16 ; 21 , 23 ; 26) pour chaque brin du câble, caractérisé en ce que chaque conduit de guidage s'évase en direction de la partie courante du câble de façon à autoriser une déviation angulaire du brin reçu dans ledit conduit, et en ce que les conduits de guidage présentent en direction du bloc d'ancrage une répartition transversale alignée avec celle des orifices du bloc d'ancrage.1. Device for anchoring a structural cable, comprising an anchoring block (3) crossed by orifices (5) each receiving a strand (1) of the cable and a means (6) for blocking said strand, a support piece (4) for the anchor block, and means (12; 15; 17; 20, 22; 25) for guiding the strands between the anchor block and a running part of the cable, in which the guide means are connected to the support piece and comprise an individual guide duct (13; 16; 21, 23; 26) for each strand of the cable, characterized in that each guide duct widens in the direction of the running part of the cable so as to allow an angular deflection of the strand received in said conduit, and in that the guide conduits have, in the direction of the anchoring block, a transverse distribution aligned with that of the orifices of the anchoring block.
2. Dispositif selon la revendication 1 , dans lequel chaque conduit de guidage (13 ; 16 ; 23 ; 26) s'évase en direction de la partie courante du câble selon un rayon de courbure (R ; R2) sensiblement constant dans un plan passant par l'axe dudit conduit.2. Device according to claim 1, in which each guide duct (13; 16; 23; 26) widens in the direction of the current part of the cable according to a radius of curvature (R; R 2 ) substantially constant in a plane passing through the axis of said conduit.
3. Dispositif selon la revendication 1 ou 2, dans lequel les moyens de guidage comprennent au moins un organe de guidage (12 ; 15 ; 17 ; 20, 22 ; 25) logé dans un tube (10 ; 10a, 10b) relié à la pièce d'appui (4), à travers lequel sont formés les conduits de guidage des brins (13 ; 16 ; 21 , 23 ; 26).3. Device according to claim 1 or 2, wherein the guide means comprise at least one guide member (12; 15; 17; 20, 22; 25) housed in a tube (10; 10a, 10b) connected to the support piece (4), through which the strand guide conduits (13; 16; 21, 23; 26) are formed.
4. Dispositif selon la revendication 3, dans lequel l'organe de guidage (12 ; 15 ; 17 ; 22) est espacé du bloc d'ancrage (3).4. Device according to claim 3, wherein the guide member (12; 15; 17; 22) is spaced from the anchor block (3).
5. Dispositif selon la revendication 4, dans lequel les brins (1 ) du câble sont des torons individuellement protégés dans la partie courante, dans lequel la protection individuelle (2) de chaque brin est interrompue dans une chambre (7) située entre l'organe de guidage (12 ; 15 ; 17 ; 22) et le bloc d'ancrage (3), dans lequel des moyens d'étanchéité (8) sont placés entre ladite chambre et l'organe de guidage afin de former une séparation étanche entre la chambre et la partie courante du câble, et en ce qu'un produit de remplissage est injecté à l'intérieur de la chambre. 5. Device according to claim 4, wherein the strands (1) of the cable are strands individually protected in the main part, in which the individual protection (2) of each strand is interrupted in a chamber (7) located between the guide member (12; 15; 17; 22) and the anchor block (3), in which sealing means (8) are placed between said chamber and the guide member in order to form a sealed separation between the chamber and the current part of the cable, and in that a filling product is injected inside the chamber.
6. Dispositif selon la revendication 5, comprenant un second organe de guidage (20) situé entre le bloc d'ancrage (3) et les moyens d'étanchéité (8).6. Device according to claim 5, comprising a second guide member (20) located between the anchoring block (3) and the sealing means (8).
7. Dispositif selon l'une quelconque des revendications 3 à 6, dans lequel l'organe de guidage (15 ; 17 ; 20, 22 ; 25) est en matériau déformable.7. Device according to any one of claims 3 to 6, wherein the guide member (15; 17; 20, 22; 25) is made of deformable material.
8. Dispositif selon la revendication 7, dans lequel, en direction de la partie courante du câble, un jeu (J) est laissé entre la circonférence de l'organe de guidage (15 ; 17 ; 20, 22) et le tube (10) dans lequel il est logé, afin d'autoriser une déviation angulaire de l'ensemble des brins du câble par déformation du matériau de l'organe de guidage.8. Device according to claim 7, in which, in the direction of the current part of the cable, a clearance (J) is left between the circumference of the guide member (15; 17; 20, 22) and the tube (10 ) in which it is housed, in order to allow an angular deviation of all the strands of the cable by deformation of the material of the guide member.
9. Dispositif selon la revendication 8, dans lequel l'organe de guidage9. Device according to claim 8, wherein the guide member
(15) a une périphérie cylindrique, et le jeu (J) résulte d'un évasement de la face intérieure du tube (10) en direction de la partie courante du câble, selon un rayon de courbure (R-j) sensiblement constant dans un plan passant par l'axe du tube.(15) has a cylindrical periphery, and the clearance (J) results from a flaring of the inner face of the tube (10) in the direction of the current part of the cable, according to a radius of curvature (R- j ) substantially constant in a plane passing through the axis of the tube.
10. Dispositif selon la revendication 8, dans lequel le tube (10) a une face intérieure cylindrique, et le jeu (J) résulte d'un rétrécissement de la périphérie de l'organe de guidage (17) en direction de la partie courante du câble, selon un rayon de courbure (R.,) sensiblement constant dans un plan passant par l'axe du tube.10. Device according to claim 8, in which the tube (10) has a cylindrical inner face, and the clearance (J) results from a narrowing of the periphery of the guide member (17) in the direction of the current part. of the cable, along a radius of curvature (R.,) substantially constant in a plane passing through the axis of the tube.
11. Dispositif selon la revendication 8, dans lequel le jeu (J) résulte en partie d'un rétrécissement de la périphérie de l'organe de guidage en direction de la partie courante du câble, et en partie d'un évasement de la face intérieure du tube en direction de la partie courante du câble.11. Device according to claim 8, in which the clearance (J) partly results from a narrowing of the periphery of the guide member in the direction of the current part of the cable, and partly from a flaring of the face inside the tube towards the current part of the cable.
12. Dispositif selon l'une quelconque des revendications 6 à 11 , dans lequel l'organe de guidage (15 ; 17 ; 20, 22 ; 25) présente une viscosité.12. Device according to any one of claims 6 to 11, wherein the guide member (15; 17; 20, 22; 25) has a viscosity.
13. Dispositif selon l'une quelconque des revendications 6 à 12, dans lequel l'organe de guidage (25) comporte, entre les conduits de guidage (26), des inserts (27) d'inertie décroissante en direction de la partie courante du câble. 13. Device according to any one of claims 6 to 12, wherein the guide member (25) comprises, between the guide conduits (26), inserts (27) of decreasing inertia in the direction of the current part of the cable.
14. Dispositif selon l'une quelconque des revendications 6 à 13, dans lequel le tube (10b) dans lequel est logé l'organe de guidage (15) présente une inertie décroissante en direction de la partie courante du câble. 14. Device according to any one of claims 6 to 13, wherein the tube (10b) in which is housed the guide member (15) has a decreasing inertia in the direction of the current part of the cable.
EP00936978A 1999-06-03 2000-05-30 Device for anchoring a structural cable Expired - Lifetime EP1181422B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9907016 1999-06-03
FR9907016A FR2794484B1 (en) 1999-06-03 1999-06-03 DEVICE FOR ANCHORING A STRUCTURAL CABLE
PCT/FR2000/001479 WO2000075453A1 (en) 1999-06-03 2000-05-30 Device for anchoring a structural cable

Publications (2)

Publication Number Publication Date
EP1181422A1 true EP1181422A1 (en) 2002-02-27
EP1181422B1 EP1181422B1 (en) 2003-04-02

Family

ID=9546331

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00936978A Expired - Lifetime EP1181422B1 (en) 1999-06-03 2000-05-30 Device for anchoring a structural cable

Country Status (13)

Country Link
US (1) US6748708B1 (en)
EP (1) EP1181422B1 (en)
JP (1) JP3884289B2 (en)
AT (1) ATE236314T1 (en)
AU (1) AU771495B2 (en)
DE (1) DE60001936T2 (en)
DK (1) DK1181422T3 (en)
ES (1) ES2194738T3 (en)
FR (1) FR2794484B1 (en)
HK (1) HK1044580A1 (en)
MX (1) MXPA01012440A (en)
PT (1) PT1181422E (en)
WO (1) WO2000075453A1 (en)

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US9850630B2 (en) 2013-05-31 2017-12-26 Vsl International Ag Cable anchorage with bedding material

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US8621725B2 (en) * 2011-12-07 2014-01-07 Horsepower Electric Inc. Large wire anti-theft device
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US9850630B2 (en) 2013-05-31 2017-12-26 Vsl International Ag Cable anchorage with bedding material

Also Published As

Publication number Publication date
DE60001936D1 (en) 2003-05-08
ATE236314T1 (en) 2003-04-15
AU5228300A (en) 2000-12-28
EP1181422B1 (en) 2003-04-02
US6748708B1 (en) 2004-06-15
AU771495B2 (en) 2004-03-25
FR2794484A1 (en) 2000-12-08
JP3884289B2 (en) 2007-02-21
DE60001936T2 (en) 2004-02-12
JP2003501571A (en) 2003-01-14
FR2794484B1 (en) 2001-08-03
WO2000075453A1 (en) 2000-12-14
HK1044580A1 (en) 2002-10-25
ES2194738T3 (en) 2003-12-01
DK1181422T3 (en) 2003-07-28
MXPA01012440A (en) 2003-10-14
PT1181422E (en) 2003-08-29

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