EP2633137A1 - Endverankerung von zuggliedern an stahlbetonträgern - Google Patents
Endverankerung von zuggliedern an stahlbetonträgernInfo
- Publication number
- EP2633137A1 EP2633137A1 EP11775975.3A EP11775975A EP2633137A1 EP 2633137 A1 EP2633137 A1 EP 2633137A1 EP 11775975 A EP11775975 A EP 11775975A EP 2633137 A1 EP2633137 A1 EP 2633137A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flange
- reinforced concrete
- tension member
- concrete beam
- 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.)
- Granted
Links
Classifications
-
- 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 a device for the final anchoring of tension members made of fiber-reinforced plastic ribbon slats on reinforced concrete beams, also reinforced concrete beams, which are equipped with a corresponding device and a method 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 flat strip, 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.
- Screw dowels can reduce the load capacity of a reinforced concrete beam in
- end anchors which are fastened by dowels to the structure described in WO 2004/038128 A1 and in
- the object of the present invention is therefore to provide a device for the final anchoring of tension members made of fiber-reinforced plastic ribbon slats on reinforced concrete beams, which, without the
- Damaged steel insert can be easily attached to a reinforced concrete beam and yet can absorb a high tensile load.
- the core of the invention is therefore a device for the final anchoring of tension members made of fiber-reinforced plastic ribbon strips on reinforced concrete girders, which have a web and a flange with a horizontal flange bottom, two flange sides and two, from the flange sides to the web extending, flange tops, wherein
- the device has a base plate that can be positioned horizontally on the flange underside and at least one side part that can be positioned vertically along at least one flange side; the base plate and / or the at least one side part has at least one fastening element for a tension member; and wherein the at least one side part is arranged such that, in the region of the taper of the flange toward the web, it has a projection directed towards the web, which projection is arranged such that it can at least partially rest on the flange top side.
- the inventive device can be easily mounted on a reinforced concrete beam and has many advantages over the end anchors for tension members on reinforced concrete beams, which are known from the prior art.
- the inventive device Compared with the end anchors, which are screwed to the structural surface, the inventive device has the advantage that it does not require drilling of the supporting surface for setting the screw dowel, whereby there is no danger to weaken the structure by damaging the steel core.
- the device according to the invention in particular by the overlapping of the at least one side part with the projection on the flange top of a reinforced concrete girder and the tensioning of the tension member on the girder, 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.
- Figure 1 shows schematically a cross section through a reinforced concrete beam
- Figure 2 schematically shows a cross section through a device for the final anchoring of tension members made of fiber-reinforced plastic ribbon slats;
- Figure 3 schematically shows a cross section through a reinforced concrete beam with a device with only one side part
- Figure 4 is a schematic view of a device for the final anchoring of tension members
- Figure 5 schematically shows a cross section through a reinforced concrete beam and the assembly of a multi-part device for the final anchoring of tension members
- Figure 6 shows schematically a cross section through a reinforced concrete beam with a device with lateral fastening elements for tension members
- Figure 7 shows schematically a cross section through a reinforced concrete beam with illustrated region of the recesses recessed
- Figure 8 shows schematically a cross section through a reinforced concrete beam with a device with two lower fastening elements for tension members
- Figure 9 shows schematically a cross section through a reinforced concrete beam with a device with side parts in the form of threaded rods
- Figure 10 shows schematically a partial longitudinal section of a reinforced concrete beam with a device and an applied tension member
- Figure 1 1 is a schematic view of a device with extension
- FIG. 12 schematically shows a view of a device with an outstanding element
- FIG. 13 schematically shows a longitudinal section through the device from FIG. 13;
- Figure 14 shows schematically a cross section through a device with two protruding elements
- Figure 15 shows schematically a partial longitudinal section of a reinforced concrete beam with a device with a protruding element and an applied tension member.
- FIG. 16 schematically shows a partial longitudinal section of a reinforced concrete beam with a device with tension element, extension and an applied tension member
- FIGS. 17a to 17c schematically show the steps of a
- Figure 1 shows a reinforced concrete beam 1, which has a web 2 and a
- the reinforced concrete beam 1 further has a steel insert, consisting for example of a transverse and in the longitudinal direction extending, unstressed steel core 7a and a longitudinally strained steel insert 7b.
- a steel insert consisting for example of a transverse and in the longitudinal direction extending, unstressed steel core 7a and a longitudinally strained steel insert 7b.
- FIG. 2 shows a device according to the invention, which has one on which
- Flange underside of a reinforced concrete beam 1, as described in Figure 1, 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 flanges towards the web, they each have a projection 1 1 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.
- a further embodiment of the device as it is already mounted on a reinforced concrete beam 1, is shown in Figure 3, said device next to the base plate 8 with the fastener 9 for a tension member, only one side part 10 and correspondingly only a projection 1 1.
- 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 shown in FIG. 2 is a multi-part device in which the projections 11 are attached to one of the side parts 10 by means of screws and nuts. Such a device is applied from below to the reinforced concrete beam 1 and then attached thereto by means of the projections 11.
- FIG. 4 Another multi-part embodiment of the inventive device is shown for example in Figure 4.
- the base plate 8 to which the fastening element 9 is for a tension member, and the side parts 10 and the projections 1 1 are formed as plates, which are in the device when the device to the reinforced concrete beam 1 in contact therewith.
- the ribs 24 not only have a stiffening function, but also serve to attach the projections 1 1 on 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
- Device is shown for example in Figure 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 1 1.
- 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 according to the invention 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. Furthermore, each of the two side parts has a fastening element 9 for a tension member and a respective projection 1 1.
- 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. Furthermore, the illustrated device is provided with an optional rib 24 for increasing the rigidity.
- the tension members and, accordingly, 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 inventive device is typically made of metal, of a metal alloy or of another high-strength material.
- the device preferably consists of steel.
- the device according to the invention has one or more fastening elements for tension members.
- the device has 1 to 4 fastening elements.
- fasteners can be any systems for
- 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.
- Suitable systems for introducing force into tension members are described, for example, as state of the art in the introduction to the description of the European patent application with the application number EP10173179.2. Particularly suitable systems for introducing force into tension members are the subject of said European patent application, the entire disclosure of which is hereby incorporated by reference.
- 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 reinforced concrete beam is preferably one such as has been described in FIG.
- the device is still such as previously described.
- the present invention also relates to a reinforced concrete beam which a web 2 and a flange 3 with a horizontal
- the reinforced concrete beam 1 comprises at least one device for the final anchoring of
- Tension members made of fiber-reinforced plastic ribbon strips, wherein
- the device has a, on the flange bottom 4 horizontally extending, base plate 8 and at least one, along at least one flange 5 vertically extending, side part 10;
- the base plate and / or the at least one side part has at least one fastening element 9 for a tension member; and wherein the at least one side part in the region of the taper of the flanges to the web has a, directed against the web towards, projection 1 1, which is at least partially supported on the flange top 6.
- 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 Switzerland AG.
- Projection 1 1 and flange top is filled by pouring or bonding frictionally. 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. In frictional, play-free contact between the projection 1 1 and flange top 6, this results in a rotation of the entire device to the contact surface between the projection 1 1 and flange top 6. In a sufficiently rigidly constructed device results from the rotation of an orthogonal to the contact surface between the base plate 8 and bottom flange. 4 directed pressure force, as well as a compressive force of the same amount between the projection 1 1 and flange top 6. The compressive force in the interface between the base plate 8 and
- Flange bottom 4 leads to a significant increase in the transmittable force in the tangential direction.
- 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 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. In particular, 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 underside of the flange. 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 beam 1, as has already been described in FIG. 1, in which case the regions over which the recessed recess 12, 13 can extend are shown. Is at the location of the reinforced concrete beam, which has the recessed recess, the application of 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 takes place on the base plate, the reinforced concrete beam first
- recessed recess 12 on the flange bottom 4. If the provision of a device is provided in which the attachment of the tension member takes place on a side part 10, then 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.
- 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 power transfer 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, on the flank of the recessed recess.
- the recessed groove typically extends so far into the
- the device for the final anchorage of tension members made 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 abuts the surface of the reinforced concrete beam.
- the depression extends at most except for the
- FIG. 8 shows, for example, a device according to the invention which is mounted on a reinforced concrete beam 1.
- the illustrated reinforced concrete carrier has a recessed recess on the flange underside 4 and on both flange sides 5.
- the dashed line shows the outline of the
- 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 1 1.
- 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.
- the side parts 10 are formed as threaded rods which connect the base plate 8 and the projections 1 1 together.
- fastening element 9 is that shown in FIG. 9
- FIG. 10 likewise shows a device according to the invention which is mounted on a reinforced concrete beam 1.
- 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 groove 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
- FIG. 10 shows the tension member 16 attached to the device, which is attached to the fastening element 9 by means of the clamping head 17.
- the pulling direction 15 of the tension member 16 is indicated by an arrow.
- the inventive device is mounted on a reinforced concrete beam, which is provided with a recessed recess for the base plate, so in the intended direction of pull 15 on
- Fixing element 9 applied force transmitted not only by tangential forces in the interface between the base plate 8 and flange bottom 4, but also by compressive forces between the end face 25 of the base plate and the edge 26 of the recess recessed.
- 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 groove results in an increase in the tangential resistance of the interface compared to a compound without
- the device In addition to the pressure forces between the base plate 8 and the base 27 of the recessed recess, the device also generates pressure forces between the extension 14 and the flange underside 4. This pressure force applied orthogonally to the concrete surface via the extension 14 on the flange underside leads to an increase in the compressive strength of the concrete and thus to an increase in the compressive forces between the end face 25 of the base plate and edge 26 of the recess recessed transferable force.
- an extension, as shown in Figure 1 1 on the base plate of the inventive device is independent of the embodiment of the device itself 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 members, depending on which one of these parts
- Fastening element is provided for the tension member.
- the extension as shown in Figure 1 1, 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 steel concrete beam.
- the inventive device is designed so 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 direction of pull 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 according to the invention for the final anchoring of tension members made of fiber-reinforced plastic flat strip lamellae on reinforced concrete girders, which have a recessed recess at least at 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 according to the invention can also have a plurality of outstanding elements 28, which are likewise 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.
- FIG. 14 shows a device with two beams as protruding elements 28 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.
- Figure 15 shows a device which is mounted on a reinforced concrete beam 1, wherein the illustrated reinforced concrete beam a recessed
- 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.
- the reinforced concrete beams illustrated in FIGS. 10 and 15 each have devices for the final anchoring of tension members made of fiber-reinforced plastic flat-strip lamellae which have no tensioning 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.
- Reinforced concrete carrier and is guided and stretched by the fasteners of the devices at both ends of the tension member and the clamping heads are only seen on the tensioned tension member, in the pulling direction of the tension member, behind the fasteners, recognized. Also, it does not require a tension member when the fastener itself a clamping device for pinching the tensioned tension member represents. For example, these would be two plates, between which the tensioned tension member would be clamped, as shown in Figure 9. Regardless of the embodiment of the inventive
- 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.
- Figure 16 shows a reinforced concrete beam 1 with a device for the final anchoring of tension members made of fiber-reinforced plastic ribbon strips, 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.
- Screw nuts 20 can be exerted train 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 element 18 and the device according to the invention 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 present invention relates to a method for the final anchoring of tension members made of fiber reinforced plastic ribbon strips on reinforced concrete beams 1, which a web 2 and a flange 3 with a horizontal flange bottom 4, two Flanschrien 5 and two, from the flange sides to the web extending flange tops 6, comprising the steps
- a device to a reinforced concrete beam 1, wherein the device has a, on the flange bottom 4 horizontally extending, base plate 8 and at least one, along at least one flange 5 vertically extending side part 10;
- the base plate and / or the at least one side part has at least one fastening element 9 for a tension member; and wherein the at least one side part in the region of the taper of the flanges to the web has a, directed against the web towards, projection 1 1, which is at least partially supported on the flange top 6; ii) applying a tension member to the fastener 9;
- step i) of the inventive method at least at the point where the base plate 8 is to be applied with the fastening element 9 for the tension member and / or the side part 10 with the fastening element 9 for a tension member, a Recess 12, 13 recessed. Thereafter, the application of the base plate 8 takes place with the fastening element 9 for a tension member and / or the side part 10 with the fastening element 9 for a tension member in the recessed
- the device according to the invention is a device with a protruding element
- the device is placed on the reinforced concrete beam in such a way that the protruding element projects into the recessed recess.
- 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 made of concrete
- FIGS. 17a, 17b and 17c show the essential steps of the method according to the invention.
- FIG. 17a shows a reinforced concrete beam 1 with steel insert 7, as previously described. Pictured are the flange underside 4 and a flange side 5. The web of the reinforced concrete beam and the flange top sides are not shown. Furthermore, FIG. 17 a shows a high-pressure water jet system 22, by means of which a recess for the device is cut out on the flange underside and on the flange sides of the reinforced concrete beam. Furthermore, a recess for the clamping head is recessed.
- Figure 17b shows the reinforced concrete beam 1 with the recessed
- Figure 17b shows a device for the final anchorage of tension members made of fiber-reinforced plastic ribbon slats 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 1 1 and an extension 14.
- the extension is designed in two parts, so that in the middle room for the tension member is maintained.
- FIG. 17c shows the reinforced concrete beam 1 to which the device for the final anchoring of tension members made of fiber-reinforced plastic flat strip lamellae has been attached. After positioning the device on the reinforced concrete beam, the projections 1 1 were attached with screws on the side panels and thus fasten the device to the reinforced concrete beam.
- the adhesive which is shown in Figure 17b, also contributes after its curing to the attachment of the device.
- FIG. 17c further shows a tension member 16 attached to the device. At its illustrated end, this is provided with a tensioning head 17 which, viewed in the pulling direction 15 of the tension member, is arranged behind the fastening element 9, in this case a slit plate.
- 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.
- Tension member with the reinforced concrete beam are particularly impresskompo- wei ght adhesives based on epoxy resins, as are commercially available, for example under the trade names Sikadur ® Sika Switzerland 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)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP11775975.3A EP2633137B1 (de) | 2010-10-28 | 2011-10-27 | Endverankerung von zuggliedern an stahlbetonträgern |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP10189323A EP2447446A1 (de) | 2010-10-28 | 2010-10-28 | Endverankerung von Zuggliedern an Stahlbetonträgern |
| EP11775975.3A EP2633137B1 (de) | 2010-10-28 | 2011-10-27 | Endverankerung von zuggliedern an stahlbetonträgern |
| PCT/EP2011/068903 WO2012055979A1 (de) | 2010-10-28 | 2011-10-27 | Endverankerung von zuggliedern an stahlbetonträgern |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2633137A1 true EP2633137A1 (de) | 2013-09-04 |
| EP2633137B1 EP2633137B1 (de) | 2018-07-18 |
Family
ID=43617966
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP10189323A Withdrawn EP2447446A1 (de) | 2010-10-28 | 2010-10-28 | Endverankerung von Zuggliedern an Stahlbetonträgern |
| EP11775975.3A Active EP2633137B1 (de) | 2010-10-28 | 2011-10-27 | Endverankerung von zuggliedern an stahlbetonträgern |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP10189323A Withdrawn EP2447446A1 (de) | 2010-10-28 | 2010-10-28 | Endverankerung von Zuggliedern an Stahlbetonträgern |
Country Status (4)
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| US (1) | US9068365B2 (de) |
| EP (2) | EP2447446A1 (de) |
| ES (1) | ES2691751T3 (de) |
| WO (1) | WO2012055979A1 (de) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102159768A (zh) * | 2008-06-12 | 2011-08-17 | 犹他大学研究基金会 | 细长加强构件的锚固、拼接和张紧 |
| US8904721B2 (en) * | 2008-06-12 | 2014-12-09 | University Of Utah Research Foundation | Anchoring, splicing and tensioning elongated reinforcement members |
| CA2793733A1 (en) | 2010-04-13 | 2011-10-20 | The University Of Utah Research Foundation | Sheet and rod attachment apparatus and system |
| WO2014138092A1 (en) * | 2013-03-04 | 2014-09-12 | Fyfe Co. Llc | Method of reinforcing a column positioned proximate a blocking structure |
| JP2015135040A (ja) * | 2013-12-16 | 2015-07-27 | Jfeシビル株式会社 | 鉄筋コンクリート構造物の補修・補強構造 |
| US9777492B2 (en) | 2015-01-19 | 2017-10-03 | Cor-Form, Llc | Core form device |
| US9909278B2 (en) * | 2016-02-26 | 2018-03-06 | Nationwide Reinforcing, Ltd. | Concrete wall stabilizing apparatus and method |
| CN105862608B (zh) * | 2016-05-20 | 2017-09-19 | 东南大学 | 一种预应力纤维板加固梁板的自动化张拉系统及方法 |
| US11186991B2 (en) * | 2018-10-31 | 2021-11-30 | Shenzhen University | Early warning device and ductility control method for prestressed FRP reinforced structure |
| EP3690167A1 (de) * | 2019-02-01 | 2020-08-05 | S & P Clever Reinforcement Company AG | Verfahren zum verstärken von beton- oder holzkonstruktionen unter verwendung von cfk-bändern und durch dieses verfahren verstärkte beton- oder holzkonstruktionen |
| US11174639B2 (en) * | 2019-02-28 | 2021-11-16 | Post Tensioning Solutions LLC | Anchor block method for reanchoring live tendons |
| WO2022070601A1 (ja) * | 2020-09-29 | 2022-04-07 | 国立大学法人 東京大学 | 柱・梁架構の補強構造 |
| RU2761800C1 (ru) * | 2020-12-09 | 2021-12-13 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Кубанский государственный аграрный университет имени И.Т. Трубилина" | Устройство для усиления приопорных частей железобетонных балок |
| CN115162769B (zh) * | 2022-07-26 | 2024-12-27 | 青岛中天斯壮科技有限公司 | 一种用于风电钢管的碳纤维布弧形张拉设备及使用方法 |
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| SE344485B (de) * | 1967-11-10 | 1972-04-17 | Elcon Ag | |
| US3817010A (en) * | 1971-04-09 | 1974-06-18 | C Stegmuller | Beam strengthening method and apparatus |
| US4456405A (en) * | 1982-12-13 | 1984-06-26 | Alex Galis | Mine roof truss assembly and associated method |
| JPH0754405Y2 (ja) * | 1991-03-11 | 1995-12-18 | 清司 細川 | 木造建築材用締結金具と木造建築物の締結構造 |
| US5175968A (en) * | 1991-09-05 | 1993-01-05 | Terry L. Saucke | Post-trimable pre/tensioned stressed architectural member |
| MX9200051A (es) * | 1992-01-07 | 1993-07-01 | Jose Luis Siller Franco | Concector por friccion mejorado para anclar acero de refuerzo a tension en elementos de concreto preesforzado o reforzado. |
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| ATE202614T1 (de) * | 1997-01-23 | 2001-07-15 | Sika Ag | Flachband-lamelle zur verstärkung von bauteilen sowie verfahren zu deren herstellung |
| DE19742210A1 (de) * | 1997-09-24 | 1999-03-25 | Goehler Bernhard Dipl Ing | Verfahren und bandförmiges Zugglied zur Ertüchtigung und/oder Sanierung von Stahlbeton- oder Spannbeton-Tragwerken sowie Vorrichtung zur Durchführung des Vefahrens |
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| DE19944573A1 (de) | 1999-09-17 | 2001-03-22 | Josef Scherer | Verstärkungsanordnung für Bauwerke und Bauwerksteile |
| US6345473B1 (en) * | 2000-04-24 | 2002-02-12 | Charles Pankow Builders, Ltd. | Apparatus for use in the construction of precast, moment-resisting frame buildings |
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| EP2420622A1 (de) * | 2010-08-18 | 2012-02-22 | Sika Technology AG | Vorrichtung zur Krafteinleitung in Zugglieder aus faserverstärkten Kunststoff-Flachbandlamellen |
-
2010
- 2010-10-28 EP EP10189323A patent/EP2447446A1/de not_active Withdrawn
-
2011
- 2011-10-27 ES ES11775975.3T patent/ES2691751T3/es active Active
- 2011-10-27 EP EP11775975.3A patent/EP2633137B1/de active Active
- 2011-10-27 WO PCT/EP2011/068903 patent/WO2012055979A1/de not_active Ceased
-
2013
- 2013-04-26 US US13/871,502 patent/US9068365B2/en active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2012055979A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US9068365B2 (en) | 2015-06-30 |
| EP2633137B1 (de) | 2018-07-18 |
| EP2447446A1 (de) | 2012-05-02 |
| US20130232895A1 (en) | 2013-09-12 |
| WO2012055979A1 (de) | 2012-05-03 |
| ES2691751T3 (es) | 2018-11-28 |
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