EP2365154B1 - Dispositif d'ancrage d'articulations de traction - Google Patents

Dispositif d'ancrage d'articulations de traction Download PDF

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Publication number
EP2365154B1
EP2365154B1 EP20110001838 EP11001838A EP2365154B1 EP 2365154 B1 EP2365154 B1 EP 2365154B1 EP 20110001838 EP20110001838 EP 20110001838 EP 11001838 A EP11001838 A EP 11001838A EP 2365154 B1 EP2365154 B1 EP 2365154B1
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EP
European Patent Office
Prior art keywords
load
filling body
ring
tension member
load application
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EP20110001838
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German (de)
English (en)
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EP2365154A1 (fr
Inventor
Hermann Dr.-Ing. Weiher
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Individual
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Individual
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/08—Members specially adapted to be used in prestressed constructions
    • E04C5/12—Anchoring devices
    • E04C5/122—Anchoring devices the tensile members are anchored by wedge-action
    • 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
    • E04C5/125—Anchoring devices the tensile members are profiled to ensure the anchorage, e.g. when provided with screw-thread, bulges, corrugations

Definitions

  • the invention relates to a device for anchoring tension members, in particular for use as an anchor element in the foundation, prestressed concrete or the like, having the features in the preamble of claim 1.
  • the anchor plate ensures the initiation and distribution of the concentrated tensile forces of the tension members on the tension members supporting structure.
  • the anchor plate is an extremely solid and individual and expensive to be manufactured steel component, which is therefore difficult and expensive and usually requires special protection against corrosive effects.
  • the anchoring comprises a hollow body, which is the end of a plastic-coated tension member contains and with this frictionally connected by a firmly adhering to the surface of the tension member, solidified and mechanically resistant mass, in particular a synthetic resin is used as filler, which is enriched with fillers.
  • the problem with this anchoring the power transmission between the tension member and filling material. In this case, at high tensile forces large anchoring lengths and special measures to improve the composite necessary (for example, a plastic coating of the tendon ends, bekieste surfaces, etc.). Since the Switzerlandgliedenden be poured into the filler, the anchoring described must also be made locally, ie on site. This is both technically complex and associated with a considerable amount of time since the filler first harden and must reach a necessary minimum capacity.
  • One in the DE 100 10 564 C1 disclosed anchorage for a prestressed or loaded tensile element made of fiber composite material consists of an anchor sleeve and an anchor body, which is made of a hardenable potting material.
  • this anchoring a good bonding behavior between the tension member and the anchor body is required to transfer the tensile force from the tension member to the anchor body.
  • a uniform distribution of the shear stresses along the tension element is achieved by the widening of the anchor body in the load-bearing part of the anchorage. At the same time, this reduces the transverse compressive stress of the tension element in the part of the anchorage close to the load compared to cylindrical and conical grouting anchorages and thus increases the efficiency of the anchorage.
  • the JP 2003-278314 A shows a device for anchoring tension members, wherein between a tension member and an inner metal ring of the anchoring device wedges are provided for load transfer.
  • the generic CH 609 121 A5 is an end anchorage of a clamping element or tensioning element strand of composite materials described, wherein a housing of the end anchoring is supported on an abutment and having an interior which extends in the longitudinal direction of the housing. Each clamping element is inserted into the interior and anchored there with a filler that completely fills the remaining interior space.
  • the filler body is formed by a set of pressure-resistant prisms, two of which have a wedge shape.
  • the housing comprises a tube jacket extending in the longitudinal direction and pressure-resistant molded parts surrounded by the latter and delimiting the wedge-shaped interior. These molded parts can be made of machined steel or cast steel or of pressure-resistant, fiber-reinforced, steam-hardened cement or plastic concrete.
  • the object of the invention is therefore to provide a device for anchoring tension members, which is particularly simple and inexpensive to produce.
  • a major advantage of this device is that it can be prefabricated high quality and inexpensive factory and comes as a finished part of the site. Furthermore, the constructional structure of a retaining ring, a filler accommodated therein as well as prefabricated channels in the packing can be realized in a very simple manner in terms of process engineering.
  • the filler has a mineral, in particular cement-bound filler.
  • Each Ceigliedkanal the filler is assigned to the load introduction side attached to the respective tension member load introduction element which laterally protrudes from the tension member and is supported on the packing.
  • the tensile force of the tension member is transferred by the load introduction members directly or indirectly (e.g., via intermediate members such as a washer) to the packing.
  • the load introduction element and the filling body each have a contact surface for forming a surface contact, wherein the contact surfaces, viewed in a section along the ring axis, are curved differently. In most cases, the contact surfaces on a different degrees of curvature, ie, differ by their adjacent radii of curvature.
  • the retaining ring is a cylindrical tube section which has a substantially constant cross-section along the axis of the ring.
  • This substantially constant cross-section means, in particular, that no flange sections are provided at the axial ends of the retaining ring.
  • the cylindrical pipe section is particularly circular cylindrical and preferably has no longitudinal weld, i. no weld in the axial direction.
  • the retaining ring can be made of simple "standard tubes" with a suitable diameter, which only have to be cut to a suitable axial dimension.
  • the retaining ring is a metal ring, in particular a steel ring. Since the retaining ring is exposed to considerable Ringzugêten when anchoring the tension members, the ring material must have sufficient tensile strength to have. Many metals meet these requirements for tensile strength, with common structural steels such as St37 or St52 have proven to be particularly suitable and inexpensive.
  • the retaining ring is a plastic ring, in particular a fiber-reinforced plastic ring.
  • plastic ring usually offers significant advantages in terms of weight and material costs.
  • the plastic allows a simplified dismantling, that is, e.g. a destruction of the retaining ring by milling or cutting.
  • the packing of the device for anchoring tension members is preferably formed by pouring the retaining ring and subsequent curing.
  • the initially flowable filling material of the packing allows in this case a particularly simple formation of the Switzerlandgliedkanäle and filling of the retaining ring.
  • the filler is made of a high strength mortar or a high strength concrete.
  • High-strength mortars and concretes are cement-bonded fillers, which meanwhile reach enormous compressive strengths of the order of magnitude of about 200 N / mm 2 and, as binders, do not require plastics, that is to say in particular are designed without synthetic resin.
  • the filler body terminates substantially flush with the retaining ring both on the load introduction side and on the load transfer side.
  • the retaining ring can easily absorb the occurring in the circumferential direction Ringzugêten, whereas the retaining ring during axial load transfer plays no special role, as this is done essentially by the filler.
  • the tension member anchoring of the retaining ring essentially only to train and the filler essentially stressed only to pressure, which facilitates the choice of suitable, inexpensive materials.
  • no tensile reinforcement in the filling body is necessary, so that the filling body can be produced with little effort, in particular as an unreinforced concrete body.
  • the load introduction element may in particular have a nut and / or a clamping wedge.
  • the surface pressures between the load introduction element and the filler can be reduced with little effort so far that they can be easily absorbed by the load introduction element, but in particular by the filler.
  • the tension member is supported mainly by means of its associated load introduction element exclusively on the filler body. Accordingly, the concentrated tensile force in the tension member is almost completely transmitted by the contact between load introduction element and packing.
  • the load introduction element and the filling body can initially substantially form a concentric line contact concentric with the ring axis and, after a load introduction, essentially form a concentric surface contact concentric with the ring axis. Due to the low frictional resistance of the line contact, an advantageous, exact fine alignment of the tension member (and the associated load introduction element) can thus be realized in the direction of the tensile force during assembly. In this case, the tension member and the load introduction element is pivoted in the manner of a ball joint relative to the filling body. Due to this fine alignment, the anchoring device only has to remove normal forces of the tension member. An undesired torque or shear force stress is thereby prevented.
  • the load introduction side of the filling body extends in the axial direction over the Retaining ring out.
  • the force of the tendon is thus initially conducted radially outwardly and then only in the load-transferring component with minimal material cost, which can reduce splitting tensile forces occurring in the load-bearing component.
  • the load forwarding side of the filling body bears directly against a load-bearing component. This means that the tensile force of the tension member is transferred substantially completely from the filler directly to the load-bearing component. Any effect of the retaining ring that contributes to the bond between the steel ring and the filler is generally negligible and is usually not taken into account in the calculation.
  • connection sleeve for receiving the tension member may be mounted on the Lastweiter effetsseite of the filler.
  • This connection sleeve is cast, for example, in the production of the filler in the filler, so that the retaining ring, the filler and the connecting sleeve form a preassembled module.
  • a Verpresskanal for subsequent filling of the annular space between the tension member and packing is provided in the packing.
  • a cement suspension is used to fill the annular space, whereby this cement suspension does not develop any appreciable contributory effect, but mainly serves to protect the tension members against corrosion.
  • a bond between the tension member and the filler is not necessary, which is why the filler can also be easily prefabricated.
  • the injection channel preferably extends from the load introduction side to the tension member channel of the packing.
  • an explosive chamber is formed in the filling body.
  • This blasting chamber is preferably filled with an explosive which communicates via an ignition means with the load introduction side. In this way, a simple dismantling of the structure by blowing up the anchoring device is possible.
  • the load introduction side and the opposite load transmission side are substantially planar surfaces which enclose an angle ⁇ of 0 ° ⁇ ⁇ ⁇ 60 °, in particular 0 ° ⁇ ⁇ 30 °.
  • ⁇ 0 °
  • an angle of ⁇ ⁇ 0 ° can also be advantageous.
  • the FIG. 1 shows the first embodiment of a device 10 for anchoring tension members 12, in particular for use as an anchor element in the foundation, prestressed concrete, tunneling or mining, etc., when installed.
  • the device 10 in this case comprises a circumferentially closed retaining ring 14 for receiving stresses, in particular Ringzug brieflyen, and a the interior of the retaining ring 14 filling filling body 16 which is captively fixed to the retaining ring 14, wherein the filler 16 is an end load introduction side 18 and an opposite, frontal Lastweiter Arthursseite 20 and for receiving a tension member 12 has a prefabricated, axially continuous Switzerlandgliedkanal 22.
  • the retaining ring 14 is in the present case a cylindrical tube section, which along a ring axis A has a substantially constant cross-section.
  • the Switzerlandgliedkanal 22 is assigned to the tension member 12 fixed load introduction element 24 on the load introduction side 18, which projects laterally opposite the tension member 12 and is supported directly on the packing 16. A traction F of the tension member 12 is thus transferred by means of the load introduction element 24 to the packing 16.
  • At least one axial end of the tension member 12 is provided with a thread 25 and the load introduction element 24 designed as a ball collar nut 27, which can be screwed onto the thread 25 of the tension member 12.
  • the ball nut 27 is slightly thickened on its side facing the filler body 16 and has a spherical contact surface 26 to the load introduction side 18 out.
  • the Switzerlandgliedkanal 22 of the packing 16 has on the load introduction side 18 a the shape of the load introduction element 24 adapted, designed as a contact surface 28 channel edge (see also Figures 2 and 13 ).
  • the tension member 12 engages according to FIG. 1 essentially by means of its associated load introduction element 24, ie its ball collar nut 27, exclusively on the filling body 16 in order to support itself.
  • the tensile force F introduced via the contact surface 26 of the load introduction element 24 is taken up by the filling body 16 via the channel edge of the load introduction side 18 and introduced into a load-transferring component 30 via the load transfer side 20.
  • the load-bearing component 30 is not an anchor plate made of steel, but in particular a concrete component of the prestressed concrete structure.
  • the load passing side 20 is applied to the load-removing component 30, so that almost the entire tensile force F of the tension member 12 is transferred directly from the packing 16 to the load-bearing component 30. Due to the bond between the filling body 16 and the retaining ring 14, a small proportion of the tensile force F can also be introduced into the load-bearing component 30 via the retaining ring 14.
  • the composite between retaining ring 14 and packing 16 is not designed for load transfer, so that, for example, a load-bearing function of the retaining ring 14 on the safe side can be neglected for a static calculation.
  • the bond strength between retaining ring 14 and packing 16 is in any case so great that the retaining ring 14 and the filler 16 are captively connected to each other and form a prefabricated assembly.
  • FIG. 2 shows this trained as a prefabricated assembly device 10 for anchoring tension members 12 in longitudinal section.
  • the filler 16 is formed by pouring the retaining ring 14 with a filler 16 ', which then hardens.
  • a filler 16 ' which then hardens.
  • corresponding formwork elements are provided in the retaining ring 14 already the Switzerlandgliedkanal, which are removed after curing of the filling material 16 '.
  • the filler 16 a mineral filler 16 ', which is cement-bonded and thus made in particular synthetic resin.
  • the packing 16 is preferably made of high-strength mortar or high-strength concrete. Mortar or concrete in this context is referred to as "high-strength" if a compressive strength of more than 100 N / mm 2 is achieved.
  • the packing 16 closes according to the Figures 1 and 2 both on the load introduction side 18 and on the load transfer side 20 substantially flush with the retaining ring 14 from. This is not only advantageous in terms of formwork, but also enables the problem-free absorption of the transverse pull occurring during load introduction in the packing 16 by the retaining ring 14. Without the absorption of these tensile stresses by the retaining ring 14, an expensive tensile reinforcement would have to be provided in the packing 16 in order to destroy the packing 16 when initiating the tensile force F to avoid.
  • the retaining ring 14 is formed in the illustrated embodiments as a metal ring, in particular as a steel ring. Particularly suitable are the standard structural steels St37 or St52 proven, as they withstand the loads and are available at low cost due to their widespread use in construction. Of course, however, the use of other suitable metals is conceivable.
  • the retaining ring 14 may also be a plastic ring, in particular a fiber-reinforced plastic ring, which offer as reinforcing material, in particular glass fibers or carbon fibers.
  • FIG. 3 shows a plan view of the device 10 according to FIG. 2 .
  • the retaining ring 14 has a circular cylindrical cross-section and is closed in the circumferential direction.
  • the retaining ring 14 is formed in this embodiment without weld, in particular without longitudinal weld, to avoid discontinuities and weakening in the ring material and to ensure safe recording of the Ringzugêten.
  • the retaining ring 14 is a suitably cut to length pipe section, which terminates flush with the filler 16 at its axial ends, wherein a complex formation of flange sections at the axial ends is not necessary.
  • FIG. 4 shows the longitudinal section of the device 10 according to FIG. 2 in an embodiment variant in which a connection sleeve 32 for receiving the tension member 12 is mounted on the load forwarding side 20 of the filling body 16.
  • This connection sleeve 32 is cast in the filler 16 'during the production of the filler 16, so that the retaining ring 14, the filler 16 and the connecting sleeve 32 form a preassembled module.
  • annular space 34 between tension member 12 and packing 16 or between tension member 12 and load-bearing member 30, for example, filled with a cement suspension (see also FIG. 14 ).
  • the connecting sleeve 32 in this case allows easy backfilling of the annular space 34, without cement suspension penetrates into the joint between the packing 16 and the load-bearing member 30.
  • the cement suspension or another suitable filling compound serves mainly as corrosion protection and provides no or only negligible contribution to the load transfer.
  • FIG. 5 shows a longitudinal section of the device 10 for anchoring tension members 12 in the installed state according to a second embodiment.
  • This second embodiment differs from the first embodiment according to FIG. 1 only by the load application elements 24 used, so to avoid repetition explicitly to the description of FIGS. 1 to 4 referred to and only differences are discussed.
  • a ball nut 27 is in the second embodiment according to FIG. 5 a "standard nut", such as a hex nut 35 used as a load introduction element 24. So that the surface pressures on the load introduction side 18 of the packing 16 do not exceed a predetermined level, Furthermore, a washer 36 is provided, which enlarges the contact surface 26 to the filling body 16.
  • the washer 36 may already be at least partially embedded in the filling material 16 'in the production of the filler 16, so that a preassembled assembly of retaining ring 14, filler 16, washer 36 and possibly the connecting sleeve 32 is formed. This reduces the number of individual parts and accordingly simplifies the method for anchoring the tension members 12.
  • FIG. 6 shows, analogous to the FIGS. 1 and 5 , The schematic sectional detail of a structure, wherein the device 10 for anchoring tension members 12, however, according to a third embodiment is formed.
  • the third embodiment again differs only by the load introduction elements 24 used, so that to avoid repetition explicitly to the description of FIGS. 1 to 5 referred only to relevant differences.
  • the tension members 12 are formed in the third embodiment without thread 25, which is why the load introduction elements 24 are not designed as ball nut 27 or standard nut 35 with washer 36, but as clamping wedges 38.
  • the channel edge 28 according to FIG. 6 is analogous to FIG. 1 adapted to the shape of the load introduction elements 24 and formed as complementary to the clamping wedges 38 wedge cone 40, as in the longitudinal section detail of FIG. 7 easy to recognize.
  • the tensile force F of the tension members 12 is introduced in this embodiment via static friction in the clamping wedges 38, which are pressed axially into the wedge cones 40 of the load introduction side 18 of the packing 16 and initiate the tensile force F via its lateral surface in the packing 16.
  • tension members 12 are shown, which are anchored by the device 10 according to the third embodiment.
  • the invention is not limited to a specific number of tension members 12, which are anchored in a single device 10. This only affects the static calculation on parameters such as the diameter, the height or the material thickness of the retaining ring 14 and the choice of the filling material 16 'from.
  • FIG. 9 shows, analogous to the FIGS. 1 . 5 and 6 , The schematic sectional detail of a structure, wherein the device 10 for anchoring tension members 12, however, is formed according to a fourth embodiment.
  • the fourth embodiment differs only by the type of load application, so that to avoid repetition of the description of the FIGS. 1 to 8 referred only to relevant differences.
  • Wedge cones 40 for the clamping wedges 38 are not formed in the packing 16, but in a load distribution plate 41, which is preferably made of steel.
  • the load distribution plate 41 is supported analogous to the washer 36 in FIG. 5 exclusively at the load introduction side 18 of the filling body 16, in order to introduce the tensile force F into the filling body 16 and via the filling body 16 into the load-bearing component 30.
  • FIG. 10 shows a fifth embodiment of the device 10 for anchoring tension members 12, in which the load introduction side 18 and the opposite load forwarding side 20 of the packing 16 are each substantially flat surfaces having an angle ⁇ of 0 ° ⁇ 60 °, in particular of 0 ° Include ⁇ 30 °.
  • a special design with ⁇ ⁇ 0 ° is according to FIG. 10 illustrated by the example of an obliquely anchored sheet pile wall 42.
  • FIGS. 11 and 12 show a longitudinal section and a plan view of the device 10 for anchoring tension members 12 according to a sixth embodiment. Starting from the first embodiment (see. FIG. 2 ) Special constructions are shown here, which, however, can also be present in the other embodiments.
  • a Verpresskanal 43 for subsequent filling of the annular space 34 (see, eg FIG. 1 ) between tension member 12 and packing 16 is provided.
  • a Verpressschlauch be inserted in the production of the packing 16, which extends from the load input side 18 to Switzerlandgliedkanal 22. Accordingly, after the anchoring of the tension member 12 or the tension members 12, a cement suspension or another suitable filling compound can be introduced from the outside via a schematically indicated filling device 44 into the annular space 34.
  • an explosive chamber 46 is formed.
  • this blasting chamber 46 is filled with an explosive material, which is already poured into the filling material 16 'during the production of the filling body 16 while forming the blasting chamber 46.
  • the blasting chamber 46 is associated with an ignition device, for example a detonating cord 48, wherein the explosive material can be exploded by a connectable trigger 50 by means of the ignition device.
  • This explosion destroys at least the filler 16 of the device 10 and thus the abutment of the load introduction element 24. This makes it very easy to dismantle the prestressed structure with little effort.
  • FIGS. 13 to 17 illustrated slightly modified variants in which the load introduction element 24 at least initially, ie during assembly of the tension member 12, with low frictional resistance relative to the packing 16 is pivotable.
  • the pivotability of the load introduction element 24 is generally realized in that the contact surface 26 of the load introduction element 24 and the contact surface 28 of the filling body 16 are curved differently in a section along the ring axis A. In most cases, the contact surfaces 26, 28 have different degrees of curvature, ie they differ in their adjacent radii of curvature.
  • FIG. 13 Starting from the first embodiment according to FIG. 1 are in FIG. 13 four possible variants for the formation of the contact surfaces 26, 28 shown.
  • FIG. 13a is an enlargement of the contact area XIII FIG. 1 and represents a preferred variant in which the convex contact surface 26 of the load introduction element 24 is curved more along the axis of the axis A than the concave contact surface 28 of the filling body 16.
  • the Ball collar nut 27 in the contact region XIII a smaller radius of curvature than the packing 16.
  • the contact surface 28 describes the lateral surface of a cone, ie in longitudinal section as a straight line (radius of curvature infinity) is visible (see. FIG. 13b ).
  • FIG. 13c shows a variant in which in longitudinal section both the load introduction element 24 and the filler. 16 are convexly curved in the contact area XIII. This also includes the special case that both contact surfaces 26, 28 have the same radius of curvature.
  • FIG. 13d another variant is shown, in which in the contact region XIII of the filler 16 is convex curved and the load introduction element 24 describes the lateral surface of a cone, ie in longitudinal section as a straight line (radius of curvature infinity) is visible.
  • the load introduction element 24 and the filling body 16 during assembly initially substantially a concentric to the ring axis A, continuous line contact and after a load introduction essentially form a concentric to the ring axis A, circumferential surface contact. Due to the low frictional resistance of the line contact, an advantageous, exact fine alignment of the tension member 12 (and the associated load introduction element 24) can thus be realized in the direction of the tensile force F during assembly. In this case, the tension member 12 and the load introduction element 24 is pivoted in the manner of a ball joint relative to the packing 16.
  • the surface pressures at the contact surface 28 are greater than the material strength of the packing 16.
  • the packing 16 is thus “locally destroyed” in its overloaded surface portions, resulting in the contact surface 26 of the Load introduction element 24 adjacent contact surface 28 of the packing 16 increases.
  • the "local destruction” of the packing 16 takes place until the contact surface 28 has reached a size at which the surface pressures are below the material strength of the packing 16.
  • the contact surface 28 of the filler 16 is formed complementary to the contact surface 26 of the load introduction element 24.
  • the contact surface 28 is already so large from the outset that the material strength of the Packing 16 is not exceeded and, accordingly, no "local destruction” takes place. Due to the increased frictional resistance between the contact surfaces 26, 28, however, the pivotability or fine alignment of the anchoring device 10 is undesirably impaired.
  • FIG. 14 shows the second embodiment according to FIG. 5 with slightly modified washer 36.
  • the contact surface 26 of the washer 36 in FIG. 14 is in the form of the lateral surface of a truncated cone and the contact surface 28 of the packing 16 convex (see. FIG. 13d ). Consequently, in this variant of the second embodiment, a pivotability of the anchoring device 10 is given.
  • FIG. 15 shows a particular variant of the third embodiment according to FIG. 6 in which the contact surface 28 of the filling body 16 is not complementary to the clamping wedges 38, but is convex (cf. FIG. 13d ) to allow pivotability of the anchoring device 10.
  • a washer 36 according to FIG. 14 completed and the contact surface 28 of the packing 16 convex (see. FIG. 13d ).
  • the filling body 16 facing side of the load distribution plate 41 may be formed in the form of the lateral surface of a truncated cone and be dispensed with the additional washer 36.
  • a pivotability of the anchoring device 10 is in any case also given here.
  • FIG. 17 the load introduction side 18 of the packing 16 in the axial direction beyond the retaining ring 14 addition.
  • the force of the tension member 12 is thus initially conducted radially outwardly and then only in the load-transferring member 30 with minimal material cost, which can be reduced in the load-transferring component 30 occurring splitting tensile forces.
  • a conical recess 52 is provided on the load transfer side 20 so that the load introduction into the load-transferring component 30 takes place radially further outward with respect to the ring axis A, which further reduces the splitting tensile forces in the component 30.
  • the prefabricated assembly of retaining ring 14 and packing 16 then has according to FIG. 17 the shape of a thick-walled truncated cone with steel ring lacing or a bell-like shape.
  • the inventive, simple and inexpensive anchoring device 10 are in accordance with the FIGS. 1 and 13 to 17 in each case a fine alignment, a secure load transfer and a reliable Switzerlandgliedverank für shimoto's trademark for a fine alignment, a secure load transfer and a reliable Switzerlandgliedverank für shimoto's trademark for a fine alignment, a secure load transfer and a reliable Switzerlandgliedverank für shimoto's trademark for a fine alignment, a secure load transfer and a reliable Switzerlandgliedverank für .

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Claims (12)

  1. Dispositif pour l'ancrage d'organes de traction (12), en particulier pour l'utilisation en tant qu'élément d'ancrage dans la construction de fondations, la construction en béton précontraint ou similaire, comportant
    un anneau de retenue (14) pour la réception de contraintes, qui présente un axe d'anneau (A) et qui est circonférentiellement fermé, et
    un corps de remplissage (16) qui remplit l'intérieur de l'anneau de retenue (14), qui comporte une matière de remplissage (16') minérale, en particulier liée au ciment, et qui est de préférence fixé de manière imperdable sur l'anneau de retenue (14), ainsi qu'un élément d'introduction de charge (24),
    le corps de remplissage (16) présentant un côté (18) d'introduction de charge du côté face frontale et un côté (20) de transmission de charge opposé du côté face frontale ainsi qu'au moins un canal (22) d'organe de traction préfabriqué et axialement ininterrompu pour la réception d'un organe de traction (12),
    l'élément d'introduction de charge (24) qui est à fixer sur l'organe de traction (12) respectif, qui fait latéralement saillie par rapport à l'organe de traction (12) et qui est en appui sur le corps de remplissage (16) devant être associé à chaque canal (22) d'organe de traction du côté (18) d'introduction de charge, et
    l'élément d'introduction de charge (24) et le corps de remplissage (16) présentant chacun une surface de contact (26, 28) pour la réalisation d'un contact de surface,
    caractérisé en ce que les surfaces de contact (26, 28), vues dans une section le long de l'axe d'anneau (A), présentent des courbures différentes, en particulier des courbures d'intensités différentes.
  2. Dispositif selon la revendication 1, caractérisé en ce que l'anneau de retenue (14) est un tronçon de tube cylindrique qui présente le long de l'axe d'anneau (A) une section transversale sensiblement constante.
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que l'anneau de retenue (14) est un anneau métallique, en particulier un anneau en acier.
  4. Dispositif selon la revendication 1 ou 2, caractérisé en ce que l'anneau de retenue (14) est un anneau en plastique, en particulier un anneau en plastique renforcé par des fibres.
  5. Dispositif selon l'une des revendications précédentes, caractérisé en ce que le corps de remplissage (16) se termine sensiblement en affleurement avec l'anneau de retenue (14) du côté (18) d'introduction de charge et/ou du côté (20) de transmission de charge.
  6. Dispositif selon l'une des revendications précédentes, caractérisé en ce qu'il est prévu dans le corps de remplissage (16) un canal de pressage (43) pour le comblement ultérieur de l'espace annulaire entre l'organe de traction (12) et le corps de remplissage (16).
  7. Dispositif selon l'une des revendications précédentes, caractérisé en ce que le côté (18) d'introduction de charge et le côté (20) de transmission de charge opposé sont des surfaces sensiblement planes qui renferment un angle (α) de 0° ≤ α ≤ 60°, en particulier de 0° ≤ α ≤ 30°.
  8. Dispositif selon l'une des revendications précédentes, caractérisé en ce que l'élément d'introduction de charge (24) présente un écrou (27, 35) et/ou une cale de serrage (38).
  9. Dispositif selon l'une des revendications précédentes, caractérisé en ce que le canal (22) d'organe de traction du corps de remplissage (16) présente du côté (18) d'introduction de charge un bord de canal (28) adapté à la forme de l'élément d'introduction de charge (24).
  10. Dispositif selon l'une des revendications précédentes, caractérisé en ce que l'organe de traction (12) s'appuie uniquement sur le corps de remplissage (16) sensiblement au moyen de son élément d'introduction de charge (24) associé.
  11. Dispositif selon l'une des revendications précédentes, caractérisé en ce que l'élément d'introduction de charge (24) et le corps de remplissage (16) forment lors du montage tout d'abord un contact linéaire périphérique sensiblement concentrique par rapport à l'axe d'anneau (A), et suite à une introduction de charge, un contact de surface périphérique sensiblement concentrique par rapport à l'axe d'anneau (A).
  12. Dispositif selon l'une des revendications précédentes, caractérisé en ce que le côté (18) d'introduction de charge du corps de remplissage (16) s'étend dans la direction axiale au-delà de l'anneau de retenue (14).
EP20110001838 2010-03-05 2011-03-04 Dispositif d'ancrage d'articulations de traction Active EP2365154B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201010010347 DE102010010347A1 (de) 2010-03-05 2010-03-05 Vorrichtung zur Verankerung von Zuggliedern

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EP2365154A1 EP2365154A1 (fr) 2011-09-14
EP2365154B1 true EP2365154B1 (fr) 2013-01-23

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DE (1) DE102010010347A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3069558A1 (fr) * 2017-07-31 2019-02-01 Soletanche Freyssinet Dispositif d'ancrage d'armatures
CN109849176B (zh) * 2019-04-02 2020-04-10 安徽省建筑科学研究设计院 一种预制桩及其制备方法
CN110258930B (zh) * 2019-05-23 2021-06-04 北京建筑大学 纤维增强筋锚具、制造模具及其使用方法
DE102019129354A1 (de) * 2019-10-30 2021-05-06 Max Bögl Wind AG Mit wenigstens einem Spannglied vorgespanntes Bauwerk sowie Verfahren zur Herstellung eines mit wenigstens einem Spannglied vorgespannten Bauwerks
AU2021308326A1 (en) * 2020-07-15 2023-03-16 Ccl Stressing International Ltd Concrete post-tensioning anchors

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB704094A (en) * 1951-05-15 1954-02-17 British Transp Commission Improvements relating to anchorages for prestressing elements used in concrete
DE1409162A1 (de) * 1958-05-02 1968-11-14 Vorspann Technik Gmbh Verfahren und Vorrichtung zum Verankern von starren Staeben als Vorspannglieder von Baukoerpern aus Beton oder anderen Massen
GB881774A (en) * 1958-05-02 1961-11-08 Stup Procedes Freyssinet Improvements in or relating to anchoring methods and devices for pre-stressing bars
FR1209949A (fr) * 1958-05-02 1960-03-04 Stup Procedes Freyssinet Perfectionnements aux procédés et dispositifs d'ancrage pour barres de mise en précontrainte
DE1193226B (de) * 1960-10-06 1965-05-20 Heilmann & Littmann Bau Ag Ankerkopf fuer Drahtbuendel in Spannbetonbauteilen
DE1659131C3 (de) 1967-12-22 1974-09-05 Intercontinentale-Technik Gesellschaft Fuer Planung Und Konstruktion Mbh, 8000 Muenchen Spannglied verankerung für Betonbauteile und Verfahren zu ihrer Anwendung
DE7508587U (de) * 1975-03-18 1976-09-16 Intercontinentale-Technik Gmbh, 8000 Muenchen Endverankerung fuer spannelemente
DE2609979C2 (de) * 1976-03-10 1986-06-26 terragrundbau GmbH, 8000 München Ankerkopf für Mehrstahl-Injektionszuganker
GB1540110A (en) * 1976-05-11 1979-02-07 Dyckerhoff & Widmann Ag Corrosion-protected tension member for a pestressed pressure-grouted tie
FR2413587A1 (fr) * 1977-12-30 1979-07-27 Freyssinet Int Stup Dispositif assurant le guidage de la deviation de cables tendus
DE4437104C1 (de) * 1994-10-18 1995-11-30 Vsl Vorspanntechnik Deutschlan Feste Verankerung von Spanndrahtlitzen in einem Betonbauteil
ES2151323B1 (es) * 1996-09-25 2001-07-01 Vidal Fernandez Pedro Maria Dispositivo de anclaje para dos o mas cables de pretensado en obras de construccion.
JP3921298B2 (ja) * 1998-05-27 2007-05-30 ジャパンライフ株式会社 自律型支圧板
DE10010564C1 (de) * 2000-03-03 2001-07-05 Johann Kollegger Verankerung für ein Zugelement aus Faserverbundwerkstoff
JP2003278314A (ja) * 2002-03-20 2003-10-02 Daisen:Kk ストランド定着具

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DE102010010347A1 (de) 2011-09-08

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