EP1121492A1 - Deviateur pour cable de hauban - Google Patents
Deviateur pour cable de haubanInfo
- Publication number
- EP1121492A1 EP1121492A1 EP99947576A EP99947576A EP1121492A1 EP 1121492 A1 EP1121492 A1 EP 1121492A1 EP 99947576 A EP99947576 A EP 99947576A EP 99947576 A EP99947576 A EP 99947576A EP 1121492 A1 EP1121492 A1 EP 1121492A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coφs
- cable
- deflector
- strands
- deflector according
- 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
Links
- 239000000463 material Substances 0.000 claims abstract description 28
- 238000004873 anchoring Methods 0.000 claims description 40
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims description 8
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000011701 zinc Substances 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 229910001297 Zn alloy Inorganic materials 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 239000012815 thermoplastic material Substances 0.000 claims description 2
- 229920001187 thermosetting polymer Polymers 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims 1
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 102220082618 rs138865666 Human genes 0.000 description 10
- 239000011440 grout Substances 0.000 description 7
- 239000004568 cement Substances 0.000 description 6
- 229920001903 high density polyethylene Polymers 0.000 description 5
- 239000004700 high-density polyethylene Substances 0.000 description 5
- 239000004570 mortar (masonry) Substances 0.000 description 4
- 230000004323 axial length Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000009969 flowable effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000012169 petroleum derived wax Substances 0.000 description 1
- 235000019381 petroleum wax Nutrition 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011814 protection agent Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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
- 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
Definitions
- the present invention relates to a diverter for cable stays with n separate strands, of the type comprising at least one body which has two opposite faces at least approximately perpendicular to a longitudinal axis of the body, and which is pierced with n holes passing through the body. one face to the other thereof and arranged in a mesh network, each hole having an inside diameter corresponding to the outside diameter of a strand of the cable.
- the strands of the cable are usually arranged in the form of a mesh network, for example, a triangular mesh network.
- the mesh In the current part of the stay cable, that is to say in the part of the cable extending between two anchors located at the ends of the cable, the mesh should be as small and compact as possible so as to minimize the resistance of the cable in the wind and to reduce the cost of this current part, in particular the cost of the cable sheath and of the material injected into this sheath for the protection of the cable.
- the strands must be separated from each other so that one can juxtapose the clamping jaws or sleeves which are used to individually attach the strands to the anchor head.
- a deflector is therefore usually provided which makes it possible to pass the strands from the wide mesh of the anchor head to the compact mesh of the current part of the stay cable.
- the strands must not undergo sudden angular deviation and must not touch each other in order to improve the fatigue behavior of the anchor. More generally, it is sought to limit as much as possible, or even eliminate, the strand-metal contacts because, in service, such contacts are liable to cause wear by small movements, what those skilled in the art call. "fretting corrosion".
- a common technique therefore consists in subjecting each strand to a small angular deviation, which is generally less than 2 ° and usually about 1 °. by placing a deflector at a distance from the anchor head such that the deflection of the most deflected strands, i.e. those located at the periphery of the cable, is less than the angle indicated above .
- the deflector is usually constituted by a device of the collar type, which clamps the sheathed strands together. The strands then touch by their individual sheath.
- the deflector is usually constituted by a plastic disc, which is pierced with as many holes as there are strands, each strand passing through a respective hole in the disc and each hole having an axis parallel to the longitudinal axis of the stay cable.
- the distance between the deflector and the anchor head can reach 3.4 m in the case of a cable composed of 61 strands of the type " T15S commonly used for cables of guy ropes, and about 2.6 m in the case of a cable made up of 37 strands.
- the coaxiality between the anchor head and the deflector must be guaranteed under penalty of introducing an additional angular deviation. Consequently, the deflector must be maintained by a rigid connection (possibly semi-rigid), which can be constituted for example, by a formwork tube in a pylon or by a tube embedded in a screed. This connection supports significant efforts to " the ultimate limit state ", which requires, in certain anchoring configurations, embedding of the connecting tube that is all the more complex as the deflector is placed far from the anchoring head.
- One way to reduce this distance may be to reduce the distance between the adjacent strands in the anchor head, as is done in some anchoring methods in order to reduce the dimensions of the anchor head itself.
- reducing the distance between the strands adjacent in other words the reduction in the size of the mesh of the mesh network formed by the strands in the anchoring head, is necessarily limited, on the one hand because of the presence of the clamping jaws or of the spun sleeves which serve to individually fix the strands on the anchor head and which must be able to be juxtaposed on the latter, and on the other hand because too close holes in the anchor head would weaken the latter and consequently adversely affect its mechanical strength. It therefore follows that this known solution allows only a limited reduction in the distance between the deflector and the anchoring head.
- Cable anchoring systems are also known, in which each of the individual strands of the cable is made to follow a curved path either in a sort of deflector placed immediately before the anchoring head (s) (US - 4,473,915 and FR - 1.328.971), either in the structure of the concrete structure (US-4.442.646, figure 4), or even in the anchor head itself (US-4.442.646, figure 6, US - 4,484,425).
- the said strands pass individually through curved guide tubes which are embedded in a concrete matrix. or in a cement grout.
- the guide tubes have an inside diameter substantially larger than the outside diameter of the individual strands.
- An epoxy resin, a mortar or a cement grout is injected so as to fill the empty spaces between each strand and the internal wall of the guide tube which surrounds it.
- the minimum mesh size is the sum: . the inside diameter of the strand guide tubes,
- the inside diameter of the guide tubes must be of the order of 22 mm to allow good injection of the residual space between the strand and the tube with a cement grout.
- the thickness of the wall of the guide tubes depends of course on the nature of the material of which they are made and on their type; we can consider that this thickness is between 2 and 3 mm.
- the overall cross section of the bundle of parallel strands forming the cable has a relatively diameter large, requiring the use of a cable protection sheath having itself a relatively large diameter adapted to that of the cable.
- This leads to a relatively expensive sheathed cable because of the relatively large diameter sheath and because of the greater quantity of material which must be injected therein for the protection of the cable.
- the cable in the case where the cable is a guy cable, it has a relatively high wind resistance because of the relatively large diameter of its sheath.
- an epoxy resin, a mortar or a cement grout is injected into the guide tubes, the strands can no longer be extracted from said tubes after setting of the injected material. As a result, it is not possible to replace a strand by strand if necessary, and the cable must then be replaced in its entirety as well as at least part of its anchoring systems.
- the present invention therefore aims to provide a deflector making it possible to obtain both a substantial reduction in the total length of the deflection and anchoring area of the strands of a stay cable, a mesh size as small as possible for the mesh network formed by the strands in the current part of the cable, and the possibility of replacing one or more strands of the cable, strand by strand, and while avoiding subjecting said strands to unacceptable localized angular deviations.
- the invention provides a diverter for guy cable with n separate strands, comprising at least one body which has two opposite faces at least approximately perpendicular to a longitudinal axis of the body and which comprises n channels passing through the body of a facing each other and arranged in a mesh network, and in which each channel has an internal diameter chosen so as to define in service a radial clearance just sufficient for a strand of the cable to pass freely in the channel , the mesh network formed by the channels has, on a first of the two opposite faces of the body, a first dimension of mesh and on the second face of the body a second dimension of mesh larger than the first mesh size, and in which with the exception of a central channel located on the longitudinal axis of the body, each channel extends between the first and second faces of the body along a curved path, characterized in that the channels which are located at the periphery of the mesh network and which have.
- the curved path having the smallest radius of curvature have at any point in their path a curvature at most equal to a predefined maximum curvature, and in that the body is made of a material capable of being form with thicknesses less than 2 mm and having a compressive strength greater than 20 MPa and a tensile strength greater than 10 MPa.
- each channel of the deflector has a predefined curvature, constant or not constant, which is compatible with the mechanical resistance of the strand and its resistance to fatigue, and which makes it possible to pass the strands from the first dimension of mesh to the second dimension of mesh, respectively at the level of the first and second faces of the body of the deflector, over a length of deflection which, as will be seen later, is much less than that which is necessary with the conventional deflectors placed at a distance from the head anchor.
- R of the deflector channels which are located at the periphery of the mesh network have a higher value or equal to 1 m, preferably greater than or equal to 2 m and less than or equal to 5 m, preferably less than or equal to 4 m, for example, the value (min. of R) is equal to 2.5 m.
- said first dimension of mesh (mi) has a value which satisfies the relationship:
- ⁇ is the value of the internal diameter of the channels which itself satisfies the relation: ⁇ + 0.4 mm ⁇ ⁇ + 2 mm
- ⁇ is the value of the diameter of a strand of the cable.
- each curved path of the channels of the deflector comprises two parts successive curved in opposite directions, namely, starting from the first face of the body of the deflector, a first part having a concavity turned towards the outside of the body, followed by a second part having a concavity turned towards the inside of the body.
- each curved path of the channels of the deflector is bent monotonously from the first to second face of the deflector body.
- the dimension of the mesh of the mesh network formed by the channels of the deflector on the second face of the latter can be chosen so as to correspond to the dimension of mesh of the holes of the head. anchor.
- the diverter can be attached to the anchor head to form a very compact assembly.
- each channel of the deflector adjoins a corresponding hole in the anchor head and forms with it a continuous path for the strand passing through them, threading the strands through the holes in the head.
- each strand is in contact with the interior surface of the corresponding channel of the deflector over a relatively long length compared to a conventional deflector. Because of this relatively large contact length, and because of the curved shape of the path followed by each strand in the deflector. each strand is subjected in service, when stretched, to a frictional force in the corresponding channel of the deflector.
- the diverter according to the invention therefore acts as a filter.
- FIG. 1 is a view partly in elevation and partly in longitudinal section showing an anchoring for guy cable using a conventional deflector
- FIG. 4 is a diagram making it possible to explain the calculation of the length of the deflection zone which is necessary for deviating transversely by a predetermined quantity a strand of a cable in the case of the conventional deflector of FIG. 1:
- Figure 5 is a view similar to Figure 1 showing an anchor for stay cable using a deflector according to the invention, Figure 5 further showing a first form of the curved path of the channels of the deflector in the case where the holes of the anchor head have axes parallel to the longitudinal median axis of the cable;
- FIG. 6 is a figure similar to Figure 5, also with a deflector according to the invention, showing a second form of the curved path of the channels of the deflector in the case where the holes of the anchor head have axes which converge towards the longitudinal median axis of the cable;
- FIG. 7 is a diagram for explaining the calculation of the length of the deflection zone which is necessary to deviate transversely from said predetermined amount a strand of a cable in the case of the deflector of Figure 6;
- FIGS 8 to 1 1 are views in side elevation, with cutaway, showing four concrete embodiments of a diverter according to the invention according to Figure 6.
- Figure 1 shows a conventional anchor 1 for a multi-strand stay cable 2.
- the stay cable 2 usually has a large number of strands, for example 37 strands 3 as shown in Figures 2 and 3.
- the anchor 1 comprises an anchor head 4, which is pierced with n holes 5 (37 holes in the example shown) in each of which the strands 3 of the stay cable 2 are individually anchored in a known manner, for example by means of keys or conical jaws 6, in which case the holes 5 are partly cylindrical and partly conical.
- the holes 5 of the anchor head 4 are arranged in an arrangement forming a mesh network, for example with an equilateral triangular mesh (FIG.
- the mesh size corresponds to the distance between the axes of any pair of adjacent holes.
- the current part of the stay cable 2 is the part which extends between the anchor 1 shown in FIG. 1 and another anchor (not shown) situated at the other end of the stay cable 2, and which usually passes through a sheath 9 (only a very small part of this sheath is visible in Figure 1) constituted for example by a high density polyethylene (HDPE) tube.
- HDPE high density polyethylene
- the diverter 7. produced for example in HDPE, is fixed to one end of a metal tube 11, itself fixed or embedded in a part 12 of a bracing work.
- the tube 1 1 supports and maintains the deflector 7 at a predefined distance 1
- This distance li is usually chosen so that the angular deviation ⁇ produced by the deflector 7 remains less than or equal to a predefined value usually at 1 to 2 ° for all the strands 3 so that, in service, these are not subjected to excessive fatigue at the place where they exit from the deflector 7.
- e 2 rm 2 (3) in which mi and m are respectively the mesh dimensions of the networks formed by the holes 8 and 5 respectively in the deflector 7 and in the anchoring head 4, and r is a number corresponding to the rank of the hole 8 or 5 considered with respect to the axis 13. From equations (1) to (3), the distance l ⁇ can be expressed by the following equation: r (m 2 - ⁇ i
- must therefore be calculated for the holes with the highest rank.
- FIG. 5 shows an anchor 10 using a diverter 7 according to a first embodiment of the invention.
- the elements of the anchor 10 of FIG. 5 which are identical or which play the same role as those of the conventional anchor 1 of FIG. 1 are designated by the same reference numbers and will not be described again in detail.
- the deflector 7 of the anchor 10 of FIG. 5 is in the form of a body 14, for example cylindrical, which has an axial length greater than that of the deflector 7 of the conventional anchor 1 of FIG. 1, and which has as many channels 8 as there are strands 3 in the cable 2.
- Each channel 8 preferably has an internal diameter ⁇ which satisfies the relationship: ⁇ + 0.4 mm ⁇ ⁇ ⁇ + 2 mm in which ⁇ is the outside diameter of a strand 3.
- the mesh network formed by the channels 8 of the deflector 7 of FIG. 5 has a first dimension of mid mesh which may be the same as that of the mesh network formed by the holes of the deflector 7 of FIGS. 1 and 2.
- the mesh network formed by the channels 8 of the deflector 7 of FIG. 5 has a second dimension of mesh m which is larger than the first mesh dimension mid and which is preferably equal to the mesh dimension of the network formed by the holes 5 of the anchor head 4. Under these conditions, the deflector 7 and the anchor head 4 can be joined together as shown in Figure 5.
- the central channel 8 of the deflector 7 which is located on the longitudinal axis of the body 14 and which is straight
- all the other channels 8 of the deflector 7 of FIG. 5 extend between the two faces of the body 14 following a curved path, which has at all points a curvature more equal to a predefined maximum curvature.
- the curved path of the channels located at the periphery of the mesh network have a greater curvature than that of the paths of the channels closer to the longitudinal axis of the body 14, while however remaining less than the predefined maximum curvature.
- this predefined maximum curvature is chosen so as to be compatible with the mechanical resistance of the strands 3 and with their resistance to fatigue.
- the minimum radius of curvature of the curved path of the channels 8 is at least equal to 1 m, preferably at least equal to 2 m, for example equal at 2.5 m.
- each channel 8 of the deflector 7 has two successive parts curved in opposite directions. More precisely, starting from the face of the body 14 which is turned towards the sheath 9, each channel 8 has a curved path which comprises a first part whose concavity is turned radially towards the outside of the body 14, and a second part whose concavity is turned radially inward of said body 14, the two parts connecting to each other continuously.
- the length of the deflection area of the strands 3 of the cable 2 is equal to the axial length of the body 14 of the deflector 7. If we compare FIGS. 1 and 5, in which the anchors 1 and 10 were drawn on the same scale, it can be seen that the length of the area of the deflection of the strands 3 in the anchor 10 is significantly shorter than the length of the zone of the deflection of the strands 3 in the conventional anchor 1, the length of the latter zone corresponding to the distance 1
- the length of the deflection zone of the strands 3, that is to say the length of the body 14 of the deflector 7, can be further reduced.
- the other channels 8 of the deflector 7 have a curved path which is curved monotonically from one of the end faces from the body 14 to its opposite end face, each curved path having a concavity oriented radially towards the outside of the body 14.
- each curved path has the shape of an arc of a circle, that is to say that it has a constant curvature, without this constituting an imperative limitation of the invention.
- each curved path could have a curvature which varies from an end face to the opposite end face of the body 14. provided, however, that at each point of each curved path the curvature remains less than the curvature predefined maximum mentioned above.
- the length 1 2 of the deflector 7 is given by the following equation:
- the length 1 2 of the diverter 7 according to the invention ( Figure 6) is 5.4 times shorter than the length l ⁇ of the area of deviation from the conventional anchor 1 and, for a cable of 61 strands, the length 1 2 is 6.4 times shorter than the length 1
- the length 1 of 2 of the deflector 7 is approximately equal to twice that of the deflector 7 in Figure 6, the values obtained
- the length of the metal tube 11 which supports and keeps the deflector can be greatly reduced, since its length may be equal to length 1 2 of the deflector as shown in Figures 5 and 6.
- the functions of the diverter 7 according to the invention are as follows:
- the deflector 7 is designed so as not to generate likely to cause contacts, in use, a detrimental wear of the strands 3, by friction in small displacements, particularly where the strands 3 are not sheathed individually.
- the interior surface of each channel 8. at least in its zone where a strand 3 once stretched comes into contact with said interior surface, can be made up:
- a polymer or a resin for example HDPE, an Epoxy resin, polyamides, polytetrafluroethylene (PTFE), etc. ;
- oxidation or wear particles are not abrasive with respect to steel, preferably a more electropositive metal than steel, for example zinc or an aluminum alloy.
- the matrix that is to say the material of the body 14. can be constituted:
- the resins may contain suitable fillers such as silica particles or the zinc powder, the size of silica particles or of zinc then being less than the quantity (sorting
- the diverter 7 according to the invention ( Figure 5 or 6) can be manufactured in different ways, which will now be described with reference to Figures 8 to 11.
- the body 14 of the deflector 7 is made of a flowable and curable plastic. such as for example a resin possibly containing fillers or a resin-based mortar.
- the channels 8 are defined by cores, for example by curved tubes (not shown) and which respectively have predefined curvatures corresponding to the desired curvature of the path of each channel 8.
- the tubes can be made of plastic or metal.
- a sheet 15 of a metal which is less hard and more electropositive than the steel constituting the strands of the cable, is placed around each elongated tube or core serving to form each channel 8 and the tubes are placed inside a mold (not shown), which can itself be formed in part by the tube 1 1 shown in FIG. 5 or 6.
- the sheet 15 can be for example made of zinc or aluminum alloy and it has for example a thickness of about 5/10 mm (this thickness has been greatly exaggerated in Figure 8 for clarity of the drawing).
- the flowable and curable resin intended to form the body 14 is then cast or injected into the mold.
- the tubes serving as cores for molding are removed from the body 14 after it has been removed from the mold, while the sheets 15 remain in the channels 8 in order to double their internal surface.
- the body 14 of the deflector 7 is produced by molding in the same manner as the embodiment of FIG. 8, except that, in this case, the channels 8 are not lined internally with '' a sheet or other metallic coating.
- the cores used to form the channels 8 in the body 14 can have a skin and / or be coated with a material facilitating their removal from the body 14 after molding thereof.
- each channel 8 is machined in the material of the body of the deflector 7, for example using a tool 16 in the form of a semi-diabolo, which has a curved profile corresponding to the desired curvature of the curved path of the channel 8.
- the deflector 7 is preferably constituted by several bodies, for example three bodies 14a, 14b. and 14c. drilled with n holes and arranged successively on the same longitudinal axis and preferably juxtaposed, the homologous holes of the three bodies 14a. 14b and 14c each time defining a continuous curved channel 8 for a strand 3 of the cable 2.
- Each hole or channel 8 of the intermediate body 14b which has an axial length greater than that of the two end bodies 14a and 14c can be drilled at using the tool 16 from each of the two end faces of the intermediate member 14b, in such a way that the two holes thus formed meet in the middle of the intermediate body 14b.
- the shoulders which appear at the interfaces of the three bodies 14a, 14b and 14c, due to the differences in diameter of the holes 8 at these locations, can be cut down by milling, as shown in 17, so as not to hinder the threading of the strand in the aligned holes of the three bodies 14a-14c.
- these three bodies can be made of metal, preferably in a less hard and more electropositive metal than the steel constituting the strands, for example aluminum or an aluminum alloy.
- the three bodies 14a to 14c can also be made of steel, but in this case the surface of the channels 8 will preferably be lined with a layer of less hard material than the steel constituting the strands of the cable. If this layer is itself metallic, it may be deposited for example by an electrolytic deposition process or by any other suitable process.
- the diverter 7 is obtained by a mixed method combining the methods described above.
- the deflector 7 can be constituted by two juxtaposed bodies 14a and 14d.
- the body 14a may be made of metal or of thermoplastic material, for example a material chosen from the range of HDPE or polyamides 6.
- the body 14a can then be produced according to the machining technique by removal of material described with reference to FIG. 10, or according to a pressure injection technique.
- the body 14d can be produced according to the technique of molding a thermosetting plastic material described with reference to FIG. 8 or 9.
- the first cable is part of a congestion circle with a diameter of 124 mm
- the second cable is part of a congestion circle with a diameter of 160 mm.
- the gain in size on the current section of the cable obtained thanks to the invention is therefore considerable, of the order of 37% in diameter, or 60% in section compared to cables provided with anchoring and deflection systems. described in US patents 4,442,646, 4,473,915 and 4,484,425.
- the deflector 7 according to the invention be attached to the anchoring head 4, although this arrangement is particularly favorable from the point of view of the guidance of the strands 3 and from the point of view of the total length of the anchoring 10
- the deflector 7 is composed of several successive bodies, these are not necessarily contiguous to each other, but they can be slightly spaced from each other, for example a few tens of centimeters.
- the body 14 or the bodies 14a to 14c are not necessarily cylindrical, but they can be frustoconical or partly cylindrical and partly frustoconical, or they can have a non-circular section, for example a polygonal section.
- each channel 8 has a constant curvature (arc of a circle) over its entire length.
- the curvature of each curved path can indeed vary over all or part of the length of the path, provided that at any point of said path the value (min. Of R) of the radius of curvature remains within the limits indicated above.
- each channel can have a curved path portion, with an identical curvature for all the channels, but different curved path lengths (the channels located at the periphery of the mesh network having the longest curved path portions, and the channels located near the middle of the mesh network having the shortest curved path portions), and a rectilinear path portion following the curved path portion.
- the free spaces between each strand and the wall of the corresponding channel of the deflector can be filled with a corrosion protection agent such as, for example, a flexible visco-elastic resin, a petroleum wax, grease, or other flexible materials which do not hinder the possibility of replacing one or more strands, strand by strand.
- a corrosion protection agent such as, for example, a flexible visco-elastic resin, a petroleum wax, grease, or other flexible materials which do not hinder the possibility of replacing one or more strands, strand by strand.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Insulated Conductors (AREA)
- Ropes Or Cables (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Electric Cable Installation (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9812980 | 1998-10-16 | ||
FR9812980 | 1998-10-16 | ||
PCT/FR1999/002496 WO2000023654A1 (fr) | 1998-10-16 | 1999-10-14 | Deviateur pour cable de hauban |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1121492A1 true EP1121492A1 (fr) | 2001-08-08 |
EP1121492B1 EP1121492B1 (fr) | 2003-07-23 |
Family
ID=9531638
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99947576A Expired - Lifetime EP1121492B1 (fr) | 1998-10-16 | 1999-10-14 | Deviateur pour cable de hauban |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP1121492B1 (fr) |
JP (1) | JP4104826B2 (fr) |
KR (1) | KR100573995B1 (fr) |
AR (1) | AR020809A1 (fr) |
AT (1) | ATE245727T1 (fr) |
AU (1) | AU6097399A (fr) |
CA (1) | CA2346558A1 (fr) |
DE (1) | DE69909813D1 (fr) |
PE (1) | PE20000998A1 (fr) |
TW (1) | TW434353B (fr) |
WO (1) | WO2000023654A1 (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11148355A (ja) * | 1997-11-14 | 1999-06-02 | Mazda Motor Corp | 筒内噴射型火花点火式エンジン |
FR2806107B1 (fr) * | 2000-03-13 | 2002-10-11 | Freyssinet Int Stup | Selle de deviation pour cable et structure de genie civil comprenant une telle selle de deviation |
GB2514621B (en) * | 2013-05-31 | 2020-04-15 | Vsl Int Ag | Cable anchorage |
CN106812251A (zh) * | 2015-12-01 | 2017-06-09 | 衡阳市新德力预应力有限公司 | 一种预应力张拉端锚固装置 |
JP7430617B2 (ja) * | 2020-10-16 | 2024-02-13 | 日本碍子株式会社 | ウエハ載置台 |
CN114808734B (zh) * | 2022-05-19 | 2024-07-26 | 柳州桂桥缆索有限公司 | 一种斜拉索前支点挂篮软硬连接转换体系的施工方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1328971A (fr) * | 1962-04-21 | 1963-06-07 | Stup Procedes Freyssinet | Dispositif de mise en tension et d'ancrage de câbles de précontrainte formés d'ungrand nombre de fils ou de torons |
GB1117114A (en) * | 1964-10-26 | 1968-06-12 | Lift Slab Pty Ltd | Anchorages for concrete pre-stressing tendons |
US4442646A (en) * | 1980-10-28 | 1984-04-17 | Ponteggi Est S.P.A. | Device for anchoring tensioning elements |
DE3138819C2 (de) * | 1981-09-30 | 1986-10-23 | Dyckerhoff & Widmann AG, 8000 München | Verfahren zur Montage eines zwischen seinen Verankerungsstellen frei gespannt verlaufenden Zuggliedes, insbesondere eines Schrägkabels für eine Schrägkabelbrücke |
US4484425A (en) * | 1982-07-21 | 1984-11-27 | Figg And Muller Engineers, Inc. | Anchorage of cables |
-
1999
- 1999-10-14 KR KR1020007006540A patent/KR100573995B1/ko not_active IP Right Cessation
- 1999-10-14 DE DE69909813T patent/DE69909813D1/de not_active Expired - Lifetime
- 1999-10-14 AR ARP990105195A patent/AR020809A1/es unknown
- 1999-10-14 AT AT99947576T patent/ATE245727T1/de not_active IP Right Cessation
- 1999-10-14 AU AU60973/99A patent/AU6097399A/en not_active Abandoned
- 1999-10-14 PE PE1999001036A patent/PE20000998A1/es not_active Application Discontinuation
- 1999-10-14 WO PCT/FR1999/002496 patent/WO2000023654A1/fr active IP Right Grant
- 1999-10-14 EP EP99947576A patent/EP1121492B1/fr not_active Expired - Lifetime
- 1999-10-14 CA CA002346558A patent/CA2346558A1/fr not_active Abandoned
- 1999-10-14 JP JP2000577360A patent/JP4104826B2/ja not_active Expired - Fee Related
- 1999-10-15 TW TW088117891A patent/TW434353B/zh not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO0023654A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP4104826B2 (ja) | 2008-06-18 |
JP2002527653A (ja) | 2002-08-27 |
KR100573995B1 (ko) | 2006-04-25 |
KR20010033161A (ko) | 2001-04-25 |
AR020809A1 (es) | 2002-05-29 |
PE20000998A1 (es) | 2000-10-13 |
DE69909813D1 (de) | 2003-08-28 |
CA2346558A1 (fr) | 2000-04-27 |
EP1121492B1 (fr) | 2003-07-23 |
WO2000023654A1 (fr) | 2000-04-27 |
ATE245727T1 (de) | 2003-08-15 |
TW434353B (en) | 2001-05-16 |
AU6097399A (en) | 2000-05-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3469244B1 (fr) | Embout de connexion de ligne flexible, ligne flexible et procédé associés | |
FR3006341A1 (fr) | Procede d'ancrage et ancrage de cable avec materiau formant matelas | |
EP1181422B1 (fr) | Dispositif d'ancrage d'un cable de structure | |
EP0703480A1 (fr) | Câble à fibres optiques et dispositif de fabrication d'un tel câble | |
LU85160A1 (fr) | Elements filiformes utilisables pour le renforcement de materiaux moulables en particulier pour le beton | |
LU84984A1 (fr) | Cables et leur procede de fabrication | |
EP0073170A2 (fr) | Dispositif de raccordement incurvé entre deux portions rectilignes d'un câble tendu | |
EP0439411A1 (fr) | Isolateur composite et son procédé de fabrication | |
CA3071589A1 (fr) | Dispositif d'ancrage d'armatures | |
FR2962935A1 (fr) | Piece en materiau composite, son procede de fabrication, et bielle obtenue par ce procede | |
EP2649239A2 (fr) | Dispositif de deviation d'un cable de structure tel qu'un hauban, et ouvrage ainsi equipe | |
EP1121492B1 (fr) | Deviateur pour cable de hauban | |
WO2010018343A1 (fr) | Corde pour raquette, notamment pour raquette de tennis | |
EP1065317B1 (fr) | Câble de suspension pour pont suspendu | |
FR2671158A1 (fr) | Raidisseur renforce et son procede de realisation. | |
EP0465303B1 (fr) | Perfectionnements aux ponts à haubans et plus particulièrement à leurs pylônes et haubans | |
FR2645070A3 (fr) | Elements de structure en materiau composite a pieces extremes de fixation, en metal et son procede de fabrication | |
EP1659232A1 (fr) | Elément en béton précontraint, procédé de réalisation d'un élément en béton précontraint et tube de frettage pour la réalisation d'un élément en béton précontraint | |
FR2634856A1 (fr) | Conduit en beton | |
CA2364994A1 (fr) | Gaine pour cable a plusieurs torons paralleles et hauban muni d'une telle gaine | |
WO2023169994A1 (fr) | Connecteur de liaison destine a lier entre eux des premier et second elements d'un ouvrage | |
FR2484584A1 (fr) | Dispositif de serrage pour cable de haubanage a plusieurs torons | |
FR2575498A1 (fr) | Dispositif d'ancrage de cables, notamment de haubans de ponts | |
EP2803763A1 (fr) | Câble de traction et de levage perfectionné et procédé de réalisation d'un tel câble | |
FR2590608A1 (fr) | Perfectionnements aux dispositifs de precontrainte ou analogues comportant des tirants. |
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 |
|
17P | Request for examination filed |
Effective date: 20010405 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: VINCI CONSTRUCTION GRANDS PROJETS |
|
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 |
Designated state(s): AT BE CH CY DE DK ES FI FR 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: 20030723 Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;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: 20030723 Ref country code: IE 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: 20030723 Ref country code: GB 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: 20030723 Ref country code: FI 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: 20030723 Ref country code: AT 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: 20030723 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: FRENCH |
|
REF | Corresponds to: |
Ref document number: 69909813 Country of ref document: DE Date of ref document: 20030828 Kind code of ref document: P |
|
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: 20031014 Ref country code: CY 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: 20031014 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE 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: 20031023 Ref country code: GR 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: 20031023 Ref country code: DK 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: 20031023 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE 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: 20031024 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20031031 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20031031 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20031031 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20031031 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES 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: 20031103 |
|
NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20031223 |
|
LTIE | Lt: invalidation of european patent or patent extension |
Effective date: 20030723 |
|
GBV | Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed] |
Effective date: 20030723 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D |
|
BERE | Be: lapsed |
Owner name: *VINCI CONSTRUCTION GRANDS PROJETS Effective date: 20031031 |
|
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 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
26N | No opposition filed |
Effective date: 20040426 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 18 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 19 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20180920 Year of fee payment: 20 |