EP2633137B1 - Ancrage d'extrémité de barres de traction sur des poutres en béton armé - Google Patents

Ancrage d'extrémité de barres de traction sur des poutres en béton armé Download PDF

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Publication number
EP2633137B1
EP2633137B1 EP11775975.3A EP11775975A EP2633137B1 EP 2633137 B1 EP2633137 B1 EP 2633137B1 EP 11775975 A EP11775975 A EP 11775975A EP 2633137 B1 EP2633137 B1 EP 2633137B1
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EP
European Patent Office
Prior art keywords
flange
reinforced concrete
concrete beam
tension member
base plate
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.)
Active
Application number
EP11775975.3A
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German (de)
English (en)
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EP2633137A1 (fr
Inventor
Thierry Berset
Heinz Bänziger
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Sika Technology AG
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Sika Technology AG
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Publication date
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Priority to EP11775975.3A priority Critical patent/EP2633137B1/fr
Publication of EP2633137A1 publication Critical patent/EP2633137A1/fr
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Publication of EP2633137B1 publication Critical patent/EP2633137B1/fr
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
    • E04G2023/0251—Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements
    • E04G2023/0255—Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements whereby the fiber reinforced plastic elements are stressed
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
    • E04G2023/0251—Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements
    • E04G2023/0255—Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements whereby the fiber reinforced plastic elements are stressed
    • E04G2023/0259—Devices specifically adapted to stress the fiber reinforced plastic elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
    • E04G2023/0251—Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements
    • E04G2023/0262—Devices specifically adapted for anchoring the fiber reinforced plastic elements, e.g. to avoid peeling off
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49616—Structural member making
    • Y10T29/49623—Static structure, e.g., a building component
    • Y10T29/49632—Metal reinforcement member for nonmetallic, e.g., concrete, structural element

Definitions

  • the invention relates to reinforced concrete beam according to claim 1, which are equipped with a corresponding device and a method according to claim 7 for the final anchoring of said tension members to reinforced concrete beams.
  • the reinforcement of structures for example, in the renovation of existing structures, by attaching tension members made of fiber-reinforced plastic ribbon strips, which are glued under tension to the structure is known and has many advantages over the reinforcement of structures by means of steel structures.
  • the introduction of force into the tension members takes place mainly at the ends of the tension member, after which the end anchorage of the tension members on the support structure is given particular importance.
  • end anchors which are fastened by dowels to the structure described in WO 2004/038128 A1 and in WO 02/16710 A2 ,
  • Another end anchoring which is described for example in DE 199 44 573 A1 , requires the attachment of slots on the surface of the structure.
  • US 5,479,748 A discloses a reinforced concrete beam according to the preamble of claim 1 and a method according to the preamble of claim 7.
  • the object of the present invention is therefore to propose a reinforced concrete beam with at least one device for the final anchoring of tension members made of fiber-reinforced plastic ribbon slats, the device for the final anchoring of tension members made of fiber-reinforced plastic ribbon slats, without damaging a steel insert, simply attached to the reinforced concrete beam can still be and record a high tensile load.
  • this object is achieved by a reinforced concrete beam according to claim 1 and by a method according to claim 7.
  • the device for the final anchoring of tension members made of fiber-reinforced plastic flat strip lamellae can be easily mounted on a reinforced concrete beam and has many advantages over the end anchorages for tension members on reinforced concrete beams, which are known from the prior art.
  • the device Compared to the end anchors, which are screwed to the structural surface, the device has the advantage that it does not require drilling of the structural surface for setting the screw dowel, whereby there is no danger to weaken the structure by damaging the steel core.
  • the device in particular by the overlapping of the at least one side part with the projection on the flange top of a reinforced concrete beam and the resulting train under tension of the tension member wedging the device on the carrier, can absorb a very high tensile load.
  • the load capacity of the device according to the invention is comparable to that of bolted end anchors and exceeds the load capacity of only glued end anchors by a multiple.
  • FIG. 1 shows a reinforced concrete beam 1, which has a web 2 and a flange 3 with a horizontal flange bottom 4, two flange sides 5 and two, from the flange sides to the web extending, flange tops 6, has.
  • the reinforced concrete beam 1 further comprises a steel insert, consisting for example of a running in the transverse and longitudinal direction, unstressed steel core 7a and a longitudinally strained steel insert 7b.
  • the strained steel insert additionally increases the cracking moment of a reinforced concrete beam.
  • FIG. 2 shows a device which, at the flange underside of a reinforced concrete beam 1, as shown in FIG. 1 is described, horizontally positionable, base plate 8 with a fastening element 9 for a tension member and two, along the flange 5 vertically positionable side parts 10 has. Furthermore, the side parts are set up so that, in the region of the taper of the flange towards the web, they each have a projection 11 directed towards the web. These projections are arranged so that they can be supported at least partially on the flange top 6. Furthermore, the device shown with an optional rib 24, which gives the device additional rigidity.
  • FIG. 3 Another embodiment of the device, as it is already mounted on a reinforced concrete beam 1, is in FIG. 3 shown, said device next to the base plate 8 with the fastening element 9 for a tension member, only one side part 10 and correspondingly only one projection 11 has.
  • the device can be constructed in one or more parts. If the device is one which has two side parts, the device is designed in several parts or it has at least one joint, which makes it possible to bring the base plate, side parts and / or projections on a reinforced concrete beam into the desired position.
  • the device which is in FIG. 2 is shown to a multi-part device in which the projections 11 are attached by means of screws and nuts each on one of the side parts 10.
  • Such a device is applied from below to the reinforced concrete beam 1 and then secured by means of the projections 11 thereto.
  • FIG. 4 Another multi-part embodiment of the device is for example in FIG. 4 shown.
  • the side parts 10 and the projections 11 are formed as plates which are in contact with the device when the device to the reinforced concrete beam 1 in contact.
  • the ribs 24 not only have a stiffening function, but also serve to secure the projections 11 to the side parts 10 of the device.
  • the projections can be attached directly to the side parts.
  • the side parts preferably protrude over the flange sides
  • FIG. 5 Shown here is a two-part device, as it is about to be applied to a reinforced concrete beam 1, according to the above description.
  • the device shown comprises two base plates 8 with a fastening means 9 for a tension member, each of which has a side part 10 with a projection 11. Opposite one another, they form a device according to the invention.
  • Such an embodiment typically further comprises means by which the two sub-devices can be fastened to each other or the attachment is made by inserting the tension member in the fastening element 9 provided for this purpose.
  • FIG. 6 shows, for example, a device which is mounted on a reinforced concrete beam 1.
  • the device has a base plate 8 bearing against the flange underside 4 of a reinforced concrete beam 1 and two side parts 10 extending vertically along the flange sides 5.
  • each of the two side parts has a fastening element 9 for a tension member and a respective projection 11.
  • the projections are arranged so that they are supported on the flange top 6 and thus serve to secure the device to the reinforced concrete beam.
  • the illustrated device is provided with an optional rib 24 for increasing the rigidity.
  • the tension members and correspondingly the fastening means for the tension members are mounted in particular in the lower region of the side parts of the device or on the flange underside.
  • the device is typically made of metal, a metal alloy or other high strength material.
  • the device preferably consists of steel.
  • the device has one or more fastening elements for tension members.
  • the device has 1 to 4 fastening elements.
  • fastening elements can be used any systems for introducing force into tension members, wherein the fastening element and the tension member which is to be fastened to the fastening element, must be coordinated.
  • the fastening element is a clamping device in which the end of the tension member is clamped, for example, between two plates, no changes need to be made to the tension member for fastening.
  • the fastener is a slot plate
  • a chuck is attached to each end of the tension member.
  • the tension member is guided in such a fastener through the slot of the slit plate, so that the clamping head, viewed in the pulling direction of the tension member, is disposed behind the slit plate.
  • the fastening element is a slot plate which is used in conjunction with a tension member with a clamping head.
  • the slotted plate in the pulling direction of the tension member with Ridges or the like supported on the base plate or on the side part.
  • the device is preferably glued to the reinforced concrete beam.
  • two-component adhesives based on epoxy resin are used for this purpose, which can be high or low viscosity and possibly filled.
  • suitable adhesives under the trade names Sikadur® are commercially available from Sika Nurse AG.
  • the base plate 8 By gluing or pouring the gap between the reinforced concrete beam and the device, the base plate 8 is frictionally connected to the flange base 4 for transmitting shear and compressive forces.
  • the device In order to allow a transmission of compressive forces between the projection 11 and the flange top 6, the device is typically made to fit the dimensions of the flange, this adapted during assembly or a gap between the projection 11 and flange top is filled by pouring or bonding non-positively. If the device is loaded on the fastening element 9 orthogonally to the cross-sectional plane, tangential deformations occur in the direction of stress in the boundary layer between the base plate 8 and the flange underside 4.
  • the reinforced concrete beam does not need to be drilled to secure the device.
  • the web of the reinforced concrete beam is not pierced.
  • the reinforced concrete beam has a recessed recess in the area where the device is applied and at least part of the device is placed in the recessed recess.
  • the recessed recess can be located on the flange underside or on the flange sides. In certain cases, the recessed recess may also extend to the flange tops.
  • the recessed recess is located on those sides of the reinforced concrete beam to which the device to be mounted has the at least one fastening element for a tension member.
  • the recessed depression is located on the flange underside. If the device has fastening elements on at least one side part, the recessed recess is located on the at least one flange side on which the side part with the fastening element is applied.
  • FIG. 7 shows a reinforced concrete support 1 according to the invention, as already described in FIG FIG. 1 has been described, wherein here the areas are shown, over which the recessed recess 12, 13 can extend.
  • a device for the final anchorage of tension members made of fiber-reinforced plastic ribbon strips provided, in which the attachment of the tension member to the base plate, the reinforced concrete beam 1 in particular a recessed recess 12 at the Flange bottom 4 on.
  • the recessed recess 13 is located in particular on the corresponding flange 5. If both side parts 10 have fastening elements, in particular there is a recessed recess on both sides.
  • the recessed recess has the advantage that the tension member can be applied without clearance to the reinforced concrete beam. As a result, a possible deflection of the tension member from the device to the surface of the reinforced concrete beam, for example, to the flange bottom, be reduced or eliminated completely.
  • a recessed recess is also suitable when a preferred system, consisting of slot plate and clamping head, is used to introduce force into the tension member. In this case, the recess, against the pulling direction of the tension member, also extend over the area where the device according to the invention is applied so as to make room for the clamping head.
  • Another advantage of the recessed recess is the improved transmission of force from the device to the reinforced concrete beam, as the device can be supported at least partially, in the pulling direction of the tension member, against the flank of the recessed groove.
  • the recessed recess typically extends so far into the reinforced concrete beam that the device for the final anchorage of tension members of fiber reinforced plastic ribbon slats can be placed in the recess so that the applied tension member in the tensioned state with little or no deflection on the surface of the reinforced concrete beam ,
  • the depression extends at most up to the steel insert of the reinforced concrete beam.
  • FIG. 8 shows, for example, a device which is mounted on a reinforced concrete support 1 according to the invention.
  • the illustrated reinforced concrete beam has a recessed recess on the flange bottom 4 and on both flange sides 5.
  • the dashed line shows the outline of the reinforced concrete beam 1 in the places without recessed recess.
  • the device has a, in the recessed groove on the flange underside of the reinforced concrete beam fitting, base plate 8 with two fastening elements 9 for tension members and two, in the recessed depressions along the flange 5 vertically extending side parts 10, each with a projection 11.
  • the projections are arranged so that they are supported on the flange top 6 and thus serve to secure the device to the reinforced concrete beam.
  • the recessed recess extends into the area of the steel insert 7 of the reinforced concrete beam.
  • FIG. 9 shows an embodiment of a device which is mounted on a reinforced concrete beam 1 according to the invention. Unlike the device, as in FIG. 8 is shown, here are the side parts 10 formed as threaded rods which connect the base plate 8 and the projections 11 together. Furthermore, it concerns the fastener 9 of in FIG. 9 illustrated device around a clamping device, wherein the end of the tension member is clamped between two plates.
  • a side part of the device consists in particular of at least two such threaded rods. This improves the stability of the device.
  • FIG. 10 also shows a device which is mounted on a reinforced concrete beam 1 according to the invention.
  • the illustrated reinforced concrete beam has a recessed recess on the flange bottom 4, wherein the recess extends into the region of the steel insert 7.
  • the device has a, in the recessed recess on the flange underside of the reinforced concrete beam 1 fitting base plate with a fastener 9 for a tension member and along the flange sides vertically extending side parts 10, each with a projection.
  • the projections (not shown) are arranged so that they are supported on the flange top and thus serve to secure the device to the reinforced concrete beam.
  • FIG. 10 the attached to the device tension member 16 which is mounted by means of clamping head 17 on the fastening element 9.
  • the pulling direction 15 of the tension member 16 is indicated by an arrow.
  • the force applied in the intended direction of pull 15 on the fastening element 9 will not only be due to tangential forces in the interface between base plate 8 and flange bottom 4, but also transmitted by pressure forces between the end face 25 of the base plate and the flank 26 of the recessed recess.
  • the resulting from the application of a force in the intended direction of pull 15 on the fastener 9 rotation of the device generates compressive forces between the base plate 8 and the base 27 of the recess recessed.
  • the compressive force directed orthogonally to the interface between the base plate 8 and the base 27 of the recessed recess results in an increase in the tangential resistance of the interface compared to a connection without compressive force.
  • the forces behave in a device which has at least one fastening element 9 on at least one flange 5 of the reinforced concrete beam.
  • FIG. 11 Another embodiment of the device is for example in FIG. 11 shown, wherein the base plate 8 of this device, compared to those in FIG. 4 , additionally comprises an extension 14 which extends in the intended pulling direction 15 of the tension member.
  • An extension, as in FIG. 11 is shown on the base plate of the device, is independent of the embodiment of the device per se preferred. Furthermore, such an extension does not necessarily extend over the flange underside, but is typically mounted where on the one hand the reinforced concrete beam has a recessed recess for receiving the base plate or at least one of the side parts, depending on which of these parts provides a fastener for the tension member is.
  • the extension as in FIG. 11 shown, consist of two parts, which are arranged on one side along the tension member.
  • the extension may also extend over the area of the tension member between the tension member and the reinforced concrete beam or else such that the tension member is arranged between the extension and the reinforced concrete beam. If the extension between the tension member and reinforced concrete beam, the tension member is typically deflected by the height of the extension to the flange underside of the reinforced concrete beam.
  • the device is designed such that the base plate with the fastening element for the tension member and / or the at least one side part with the fastening element for the tension member has an extension which extends in the intended pulling direction of the tension member.
  • the extension is formed by the base plate and / or the side part having at least one, at least partially overlapping with the base plate, second plate, the second plate projects beyond the base plate in the intended direction of pull of the tension member.
  • a preferred embodiment of the device for the final anchoring of tension members made of fiber-reinforced plastic ribbon slats on reinforced concrete beams, which have a recessed recess at least on the flange underside comprises a base plate with at least one, in particular in the direction of the side parts, outstanding element and is for example in the Figures 12 (View) and 13 (cross section) are shown.
  • the base plate 8 of the device shown here has at least one protruding element 28, which is formed at least partially complementary to the recessed recess on the flange underside of the reinforced concrete beam.
  • the protruding element 28 may be formed, for example, as a mandrel, which protrudes only over a part of the width of the reinforced concrete beam in this. In particular, however, the protruding element 28 is formed as a beam which extends over the entire width of the device.
  • the device may also have a plurality of outstanding elements 28, which are also designed in particular as mandrels or as beams. If the device is one which has a plurality of excellent elements, then they in particular spaced, parallel to each other beams. For example, shows FIG. 14 a device with two beams as outstanding elements 28, which are attached to the base plate 8.
  • the base plate has at least one protruding element 28
  • the maximum height, by which the protruding element can protrude from the base plate also corresponds to the distance between the flange underside of the reinforced concrete beam and its steel core.
  • FIG. 15 shows a device which is mounted on a reinforced concrete beam 1 according to the invention, wherein the illustrated reinforced concrete beam has a recessed recess on the flange bottom 4, which extends into the region of the steel insert 7.
  • the recessed recess is typically formed so that it can accommodate the protruding element.
  • the recess shown here against the pulling direction 15 of the tension member 16, extends over the region on which the device is applied. This facilitates the use of a clamping head 17 for attaching the tension member 16 to the fastening element 9 of the device.
  • the in FIG. 15 shown apparatus at the rear part of the base plate 8, an outstanding element 28 in the form of a bar, which projects into the recessed recess.
  • the dashed lines show the invisible course of the reinforced concrete beam.
  • the embodiment of the invention in which the base plate has at least one protruding element 28 performs substantially the same function as the base plate and extension embodiment of the invention.
  • the base plate has at least one protruding element 28 is preferred because, among other things, it is simple to manufacture and easy to handle when mounted on a reinforced concrete beam.
  • such a device can be produced by bending a metal plate into a U-profile or by joining several metal plates into a U-profile, for example by screwing, riveting, welding, gluing and the like.
  • the profile base forms the base plate and the two legs form the side parts.
  • at least one excellent element, in particular a steel beam on the profile base mounted in the transverse direction to the U-profile or to the longitudinal course of the reinforced concrete beam.
  • the steel beam viewed in the pulling direction of the tension member, in the rear region of the U-profile, preferably flush with the base plate mounted.
  • reinforced concrete beams each have devices for the final anchoring of tension members made of fiber-reinforced plastic ribbon slats, which have no clamping system or tension element for the tension member. Depending on the system which is used to introduce force into the tension member, such devices can be used at both ends of the tension member.
  • the device is preferably keyed to the reinforced concrete beam.
  • the wedging comes about in particular by the train, which is exercised by the tension member 16 in the pulling direction 15 on the device state.
  • the device for the final anchoring of tension members made of fiber-reinforced plastic ribbon slats can be provided with a tension member for tensioning the tension member.
  • the tension element has the function of tensioning the tension member after it has been attached to the device according to the invention. This is typically done by threaded rods or by hydraulic presses or tractors.
  • FIG. 16 shows FIG. 16 a reinforced concrete beam 1 according to the invention with a device for the final anchoring of tension members made of fiber-reinforced plastic flat strip slats, as described above, wherein the device is equipped with a tension element 18 for tensioning the tension member 16.
  • the illustrated pulling element 18 comprises, like the device itself, a base plate, side parts and possibly projections. Furthermore, it comprises threaded rods 19, which are connected to the fastening element 9 for the tension member of the device. By tightening the nuts 20 train can be exercised on the fastener 9, whereby the tension member 16 is tensioned.
  • the tension member 18 is connected via legs or plates 21 with the side parts 10 of the device.
  • connection between the tension member 18 and device by means of Legs or plates 21 are dispensed with.
  • the tension member 18 may be attached to the reinforced concrete beam.
  • the tension member 18 may be left after the tensioning of the tension member 16 on the reinforced concrete beam, or it may be removed after fixing the clamping head with tensioned tension member again.
  • the clamping head is fixed, for example, by backfilling the area between the device according to the invention and the clamping head.
  • backfilling are materials based on cement or plastics such as epoxy resins.
  • the device When the device is a device having a protruding member, the device is applied to the reinforced concrete beam so that the protruding member protrudes into the recessed groove.
  • the recessed recess extends maximally to the steel insert of the reinforced concrete beam.
  • the recess of the recess can be made in any way, while it must be ensured that the steel insert is not damaged in the reinforced concrete beam.
  • the recess is cut out of the concrete or milled out.
  • the recess of the recess is made with a high-pressure water jet.
  • Figure 17a shows a reinforced concrete beam 1 with steel insert 7, as has been previously described. Shown are the flange bottom 4 and a flange 5. The web of the reinforced concrete beam and the flange tops are not shown. Further shows Figure 17a a high-pressure water jet system 22, by means of which a recess for the device is recessed on the flange underside and on the flange sides of the reinforced concrete beam. Furthermore, a recess for the clamping head is recessed.
  • FIG. 17b shows the reinforced concrete beam 1 with the recesses 12 recessed on the lower flange side 4 and 13 on the flange sides 5 and further the recess which has been recessed for the clamping head in the recessed recesses 12 and 13, which for the device are provided, an adhesive 23 has been applied for gluing the device to the reinforced concrete beam.
  • FIG. 17b a device for the final anchoring of tension members made of fiber-reinforced plastic flat strip lamellae consisting of a base plate 8 with a fastening element 9 for the tension member, two side parts 10, two not yet attached to the side parts projections 11 and an extension 14.
  • the extension is formed in two parts, so that space for the tension member is maintained in the middle.
  • FIG. 17c shows the reinforced concrete beam 1, to which the device for the final anchoring of tension members made of fiber-reinforced plastic ribbon slats was attached. After positioning the device on the reinforced concrete beam, the projections 11 were attached to the side parts with screws and thus secure the device to the reinforced concrete beam.
  • the glue in FIG. 17b is illustrated, also contributes after its curing to the attachment of the device.
  • FIG. 17c This is provided at its illustrated end with a clamping head 17, which, viewed in the pulling direction 15 of the tension member, behind the fastening element 9, in this case a slotted plate, is arranged.
  • the train which is exerted by the tension member 16 in the pulling direction 15 on the device, it can lead to a wedging of the device with the reinforced concrete beam.
  • the degree of wedging depends on the geometry of the device and on the method of bonding the device to the reinforced concrete beam. The wedging can have a positive effect on the stability of the device.
  • the tensioned tension member 16 is finally glued in the tensioned state with the reinforced concrete beam.
  • Suitable adhesives for bonding the tension member to the reinforced concrete beam are in particular two-component adhesives based on epoxy resin, as are commercially available, for example, under the trade names Sikadur® from Sika Nurse AG.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Bridges Or Land Bridges (AREA)

Claims (10)

  1. Poutre en béton armé, qui présente une âme (2) et une bride (3) avec un côté inférieur de bride horizontal (4), deux côtés de bride (5) et deux côtés supérieurs de bride (6) s'étendant depuis les côtés de bride vers l'âme,
    la poutre en béton armé (1) comprenant au moins un dispositif d'ancrage d'extrémité d'organes de traction constitué de lamelles de bandes plates en plastique renforcé par des fibres,
    - le dispositif présentant une plaque de base (8) s'étendant horizontalement au niveau du côté inférieur de bride (4) et au moins une partie latérale (10) s'étendant verticalement le long d'au moins un côté de bride (5) ;
    - la plaque de base et/ou l'au moins une partie latérale présentant au moins un élément de fixation (9) pour un organe de traction ; et
    - l'au moins une partie latérale présentant, dans la région du rétrécissement de la bride vers l'âme, une saillie (11) orientée vers l'âme, qui s'appuie au moins en partie sur le côté supérieur de bride (6),
    caractérisée en ce que
    la poutre en béton armé (1), dans la région où le dispositif est placé, présente un renfoncement évidé (12, 13) et au moins une partie du dispositif est placée dans le renfoncement évidé.
  2. Poutre en béton armé selon la revendication 1, caractérisée en ce que la poutre en béton armé (1), au moins à l'endroit où la plaque de base (8) est disposée avec l'élément de fixation (9) pour l'organe de traction et/ou la partie latérale (10) est disposée avec l'élément de fixation (9) pour un organe de traction, présente le renfoncement évidé (12, 13) et la plaque de base (8) avec l'élément de fixation (9) pour un organe de traction et/ou la partie latérale (10) avec l'élément de fixation (9) pour un organe de traction sont placées dans le renfoncement.
  3. Poutre en béton armé selon la revendication 1 ou 2, caractérisée en ce que la poutre en béton armé (1) présente, au niveau du côté inférieur de bride (4), le renfoncement évidé (12) et la plaque de base (8) avec l'élément de fixation (9) pour un organe de traction présente au moins un élément saillant (28), l'au moins un élément saillant (28) pénétrant dans le renfoncement évidé.
  4. Poutre en béton armé selon la revendication 3, caractérisée en ce que le renfoncement évidé (12) et l'élément saillant (28) sont réalisés au moins en partie de manière complémentaire l'un de l'autre.
  5. Poutre en béton armé selon l'une quelconque des revendications 1 à 4, caractérisée en ce que le dispositif est collé à la poutre en béton armé (1) .
  6. Poutre en béton armé selon la revendication 2, caractérisée en ce que le dispositif présente un prolongement (14) qui, dans la direction de traction prévue (15) de l'organe de traction, s'étend au-delà du renfoncement évidé (12, 13) sur le côté inférieur de bride (4) et/ou sur l'au moins un côté de bride (5) de la poutre en béton armé.
  7. Procédé pour l'ancrage d'extrémité d'organes de traction constitués de lamelles de bandes plates en plastique renforcé par des fibres à des poutres en béton armé (1), qui présentent une âme (2) et une bride (3) avec un côté inférieur de bride horizontal (4), deux côtés de bride (5) et deux côtés supérieurs de bride (6) s'étendant depuis les côtés de bride vers l'âme, comprenant les étapes suivantes :
    i) mise en place d'un dispositif sur une poutre en béton armé (1),
    - le dispositif présentant une plaque de base (8) s'étendant horizontalement sur le côté inférieur de bride (4) et au moins une partie latérale (10) s'étendant verticalement le long d'au moins un côté de bride (5) ;
    - la plaque de base et/ou l'au moins une partie latérale présentant au moins un élément de fixation (9) pour un organe de traction ; et
    - l'au moins une partie latérale présentant, dans la région du rétrécissement de la bride vers l'âme, une saillie (11) orientée vers l'âme, qui s'appuie au moins en partie sur le côté supérieur de bride (6),
    ii) mise en place d'un organe de traction sur l'élément de fixation (9) ;
    iii) serrage de l'organe de traction,
    caractérisé en ce que
    sur la poutre en béton armé (1), dans la région où le dispositif doit être placé, un renfoncement (12, 13) est évidé et au moins une partie du dispositif est placé dans le renfoncement évidé.
  8. Procédé selon la revendication 7, caractérisé en ce que sur la poutre en béton armé (1), au moins à l'endroit où la plaque de base (8) doit être disposée avec l'élément de fixation (9) pour l'organe de traction et/ou la partie latérale (10) doit être disposée avec l'élément de fixation (9) pour un organe de traction, est évidé le renfoncement (12, 13) et la plaque de base (8) et/ou la partie latérale (10) avec l'élément de fixation (9) pour un organe de traction sont placées dans le renfoncement.
  9. Procédé selon la revendication 7 ou 8, caractérisé en ce que sur la poutre en béton armé (1), au moins à l'endroit où la plaque de base (8) est disposée avec l'élément de fixation (9) pour l'organe de traction, présente au moins le renfoncement évidé (12, 13) et la plaque de base (8) avec l'élément de fixation (9) pour un organe de traction présente au moins un élément saillant (28), et le dispositif est placé de telle sorte que l'élément saillant (28) pénètre dans le renfoncement.
  10. Procédé selon l'une quelconque des revendications 7 à 9, caractérisé en ce qu'un calage du dispositif avec la poutre en béton armé (1) s'associe au serrage de l'organe de traction.
EP11775975.3A 2010-10-28 2011-10-27 Ancrage d'extrémité de barres de traction sur des poutres en béton armé Active EP2633137B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11775975.3A EP2633137B1 (fr) 2010-10-28 2011-10-27 Ancrage d'extrémité de barres de traction sur des poutres en béton armé

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP10189323A EP2447446A1 (fr) 2010-10-28 2010-10-28 Ancrage terminal d'éléments de traction sur des supports en béton armé
PCT/EP2011/068903 WO2012055979A1 (fr) 2010-10-28 2011-10-27 Ancrage d'extrémité de barres de traction sur des poutres en béton armé
EP11775975.3A EP2633137B1 (fr) 2010-10-28 2011-10-27 Ancrage d'extrémité de barres de traction sur des poutres en béton armé

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EP2633137A1 EP2633137A1 (fr) 2013-09-04
EP2633137B1 true EP2633137B1 (fr) 2018-07-18

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EP10189323A Withdrawn EP2447446A1 (fr) 2010-10-28 2010-10-28 Ancrage terminal d'éléments de traction sur des supports en béton armé
EP11775975.3A Active EP2633137B1 (fr) 2010-10-28 2011-10-27 Ancrage d'extrémité de barres de traction sur des poutres en béton armé

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EP (2) EP2447446A1 (fr)
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WO (1) WO2012055979A1 (fr)

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Also Published As

Publication number Publication date
EP2447446A1 (fr) 2012-05-02
EP2633137A1 (fr) 2013-09-04
US9068365B2 (en) 2015-06-30
US20130232895A1 (en) 2013-09-12
WO2012055979A1 (fr) 2012-05-03
ES2691751T3 (es) 2018-11-28

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