EP1905923A2 - Tige d'ancrage et dispositif destiné au renforcement de composants existants contre le cisaillement à l'aide d'une telle tige d'ancrage - Google Patents

Tige d'ancrage et dispositif destiné au renforcement de composants existants contre le cisaillement à l'aide d'une telle tige d'ancrage Download PDF

Info

Publication number
EP1905923A2
EP1905923A2 EP07116741A EP07116741A EP1905923A2 EP 1905923 A2 EP1905923 A2 EP 1905923A2 EP 07116741 A EP07116741 A EP 07116741A EP 07116741 A EP07116741 A EP 07116741A EP 1905923 A2 EP1905923 A2 EP 1905923A2
Authority
EP
European Patent Office
Prior art keywords
anchor rod
borehole
arrangement according
component
anchoring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07116741A
Other languages
German (de)
English (en)
Other versions
EP1905923A3 (fr
Inventor
Peter Bee
Camiel De Smet
Jakob Kunz
Fritz Münger
Norbert Randl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hilti AG
Original Assignee
Hilti AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hilti AG filed Critical Hilti AG
Publication of EP1905923A2 publication Critical patent/EP1905923A2/fr
Publication of EP1905923A3 publication Critical patent/EP1905923A3/fr
Withdrawn legal-status Critical Current

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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
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional [3D] extent, e.g. lattice girders
    • E04C5/0645—Shear reinforcements, e.g. shearheads for floor slabs

Definitions

  • the invention relates to an anchor rod with an anchoring portion and a threaded portion. Furthermore, the invention relates to an arrangement for reinforcing existing components against punching with such an anchor rod.
  • Generic anchor rods are rod-shaped anchor rods z. B in a with a curable material, such.
  • a curable material such as a mortar filled borehole introduced and are biased by the beginning of the Abbindevorgangs the curable composition by means of a biasing means.
  • a biasing means for example, from the US 4,662,795
  • Such an anchor rod is known as a rock anchor.
  • This anchor rod has, starting from a first end, an anchoring section in the form of a profiled section and, starting from a second end, a threaded threaded section, the threaded section adjoining the anchoring section.
  • the borehole is partially filled with a hardenable mass and the anchor rod with the anchoring portion is inserted into the borehole ahead.
  • a clamping nut is screwed onto the thread of the threaded portion and the anchor rod biased, wherein the clamping nut is supported by a washer on the ground.
  • the area of the anchor rod that is not anchored in the hardenable mass may lengthen as a result of the applied preload load.
  • a disadvantage of the known solution is that the anchor rod is not completely embedded in the curable composition and thus is not performed in the non-embedded region of the borehole.
  • the anchor rod must therefore be made massive in order to absorb the loads acting on it.
  • the large material consumption increases the production cost of such an anchor rod significantly, so that it is no longer economically viable, especially as a mass product.
  • the reinforcing device for subsequently increasing the resistance to punching in a stored on supports flat ceiling known. Through the ceiling holes are created near the support.
  • the reinforcing device comprises two parts which are respectively arranged at the bottom and the top of the ceiling and connected to each other via a screw mechanism to produce a biasing force. The remaining cavities in the borehole are filled with an injection mortar.
  • a disadvantage of the known solution is that for the arrangement of the reinforcing device, the component must be accessible from both sides. If this is a floor ceiling, the rooms above and below the ceiling can only be used to a limited extent or not at all. Should z. B. a flat ceiling of an underground parking covered with earth are reinforced, the area above the ceiling must be removed from the ground for mounting the known amplifying device. In addition, the seal is pierced when drilling through the ceiling, which must be laboriously sealed again.
  • the object of the invention is to provide a prestressable anchor rod, which is simple and economical to produce. It is also the object of the invention to provide an arrangement for To create subsequent reinforcement of existing components against punching with such an anchor rod that is easy to install.
  • an intermediate portion with an anti-adhesive surface is provided between the anchoring portion and the threaded portion.
  • the anchoring portion has, for example, a profiling which ensures a sufficient connection and thus sufficient anchoring of the anchor rod with the hardened mass.
  • the anchoring portion is formed by a reinforcing rod portion with ribs.
  • the threaded portion has, for example, a machine thread on which a clamping nut can be screwed.
  • the design of the intermediate portion is secondary as long as the surface prevents the hardenable mass from adhering to the anchor rod in this region and a biasing force can be applied to the anchor rod.
  • the intermediate portion with the non-adhesive or non-adhesive surface of the anchor rod in the wellbore can be largely completely embedded by the hardened mass, which can achieve high anchoring values despite the prestressing of the anchor rod and this is sufficiently out in deep wells.
  • the anchor rod is economical to produce, since essentially only the maximum applied preload force is decisive for the design of the anchor rod.
  • the intermediate portion is provided with a surrounding the anchor rod sleeve.
  • the sleeve is made for example of a plastic and has an inner diameter which is smaller than the outer diameter of the anchor rod in the region of the intermediate portion.
  • the sleeve is z. B. pushed over the anchor rod and is on this, if necessary, displaced or cut to length to apply different biasing forces or to be able to achieve certain anchoring values with a kind of anchor rod.
  • the hardenable mass may adhere to the outside of the sleeve, but the hardenable mass is prevented from adhering to the intermediate portion by the sleeve.
  • the outside of the sleeve may have an anti-adhesive or non-adhesive surface which may adhere the hardenable mass prevents the sleeve.
  • the thread of the threaded portion may connect directly to the anchoring portion in this embodiment of the anchor rod, wherein the axial extent of the pushed onto the anchor rod sleeve defines the intermediate portion of the anchor rod.
  • the intermediate section is provided with a coating which prevents adhesion of the curable composition to the anchor rod in the region of the intermediate section.
  • the coating is, for example, a plastic sprayed onto the anchor rod, a coating or a plastic film which prevents adhesion of the hardenable compound to the intermediate section.
  • the thread of the threaded portion may connect directly to the anchoring portion in this embodiment of the anchor rod, wherein the axial extent of the coating applied to the anchor rod coating defines the intermediate portion of the anchor rod.
  • An inventive arrangement for reinforcing existing components against punching comprises an anchor rod having an anchoring portion and a threaded portion and an intermediate portion with a non-adhesive surface between the anchoring portion and the threaded portion.
  • the anchor rod is inserted into a wellbore located at an angle to the surface of the component and filled with a hardenable mass and biased by a biasing means.
  • the borehole is advantageously bored in the direction of the support up to the level of the upper reinforcement, whereby the anchor rod anchored in the borehole after hardening of the mass bridges the punching cracks obliquely.
  • the anchor rod is biased.
  • the resistance of the subsequently reinforced component against punching can be increased by more than 50% by the arrangement according to the invention. The assembly takes place only from one side of the component and the original volume of the building is maintained even after the arranged reinforcement. A penetration of the component to be reinforced is not required, which allows economical installation of sealed components, such as underground car parks or roof structures.
  • the supporting device advantageously comprises a two-part washer, one part with a convex receptacle and one part with a concave, complementary to the convex Receiving trained projection has.
  • the angle of the borehole to the surface of the component is 30 ° to 60 °, whereby a bridging of the punching cracks in the component is ensured.
  • the angle of the borehole to the surface of the component is 40 ° to 50 °.
  • At least one centering element is preferably provided on the anchor rod.
  • the at least one centering element is, for example, an elastic ring section whose outer radial extent is greater than the inner diameter of the borehole conventionally used and whose inner diameter is slightly smaller than the outer diameter of the anchor rod.
  • the at least one centering element ensures a complete, uniform wrapping of the anchor rod in the borehole with the hardenable mass.
  • the at least one centering element has passage openings for the hardenable mass, through which the mass displaced during the insertion of the anchor rod can ascend to the borehole mouth.
  • a centering element facing the borehole mouth can also be designed as a sealing element which prevents the escape of displaced hardenable mass from the borehole and thus contamination of the working area with the hardenable mass.
  • the at least one centering used in overhead applications as a holder against slipping out of the anchor rod during the Abbindevorgang the hardenable mass.
  • a plurality of spaced-apart centering elements are provided on an anchor rod. The centering elements are provided, for example, on the anchoring section and / or on the threaded section.
  • the borehole has a recess arranged centrally and open toward the surface of the component, which in the assembled state of the arrangement essentially receives the biasing means and the section of the anchor rod projecting from the borehole.
  • the biasing mechanism is recessed in the component and there are no elements of the assembly over the surface of the component.
  • a conventional annular washer may be provided as a supporting device for the biasing member. In this arrangement, an advantageous introduction of the clamping forces takes place in the underground.
  • a cup-shaped reinforcing element is provided with a passage opening for the anchor rod in the recess, wherein its configuration complementary to Well is formed.
  • the reinforcing element is made of a metal, for example, and supports the wall of the depression, so that the pressure forces acting in this area in the component can be absorbed by the component substantially in the region of the original values despite the arranged depression.
  • the recess is filled with a filling compound, whereby the subsequently arranged reinforcement from the outside is no longer or only slightly recognizable. Furthermore, the behavior of the inventive arrangement is significantly improved by the filled recess in case of fire.
  • the filling compound is, for example, a hardenable mass in the form of a fire protection compound or a mortar. Alternatively, a fire protection foam can be used as filling compound.
  • a bevelled washer is provided, wherein the angle of the chamfer to the axis of the passage opening for the anchor rod corresponds to the angle of the borehole to the surface of the component.
  • the biasing force applied to the tie rod by the biasing means is introduced into the washer as a support and directed into the ground via the beveled surface of the washer in contact with the component.
  • a sealing disc is provided, which is acted upon by the biasing means.
  • the sealing disk preferably has a filling channel which, after the pretensioning operation, permits a subsequent filling of the area at the borehole mouth with a curable sealing compound.
  • a possible annular gap between the anchor rod and a support device or the biasing means is closed by the injected sealant and created a backlash-free connection.
  • the anchor rod 11 shown in Figure 1 has an anchoring portion 16 extending from a first end 12, a threaded portion 17 extending from a second end 13, and an intermediate portion 18 having an anti-adhesive surface disposed between the anchoring portion 16 and the threaded portion 17 is provided.
  • the intermediate portion 18 is provided with a surrounding the anchor rod 11 sleeve 19, which consists of a plastic z. B. is made with anti-adhesive properties.
  • the anchoring portion 16 is formed by a ribbed reinforcing bar.
  • the threaded portion 17 has an external thread for a clamping nut as a biasing means 14.
  • the intermediate portion 18 has in this embodiment, a smooth surface on which the sleeve 19 is slidably fixed.
  • the anchor rod 21 like the anchor rod 11, has an anchoring portion 26 extending from a first end 22, a threaded portion 27 extending from a second end 23, and an intermediate portion 28 having a non-adhesive surface disposed between the anchoring portion 26 and the threaded portion 27 is provided.
  • a coating 29 is provided to provide a non-adhesive surface of the intermediate portion 28 to provide a non-adhesive surface of the intermediate portion 28 .
  • FIG. 3 shows two exemplary embodiments of arrangements 31 and 51 according to the invention for reinforcing an existing flat ceiling 6 mounted on supports 7 against punching with anchor rods 11 and 21, each having an anchoring section 16 or 26 and a threaded section 17 or 27 and an intermediate section 18 and 28 with a non-adhesive surface between the anchoring portion 16 and 26 and the threaded portion 17 and 27, respectively.
  • the anchor rods 11 and 21 in a arranged at an angle to the surface 8 of the flat ceiling 6 and filled with a curable material 33 or 53 boreholes 34 and 54th introduced and biased by means of biasing means 32 and 52, respectively.
  • each anchor rod 11 and 21 each have two centering elements 35 and 55, respectively.
  • the anchor rods 11 and 21 are held by the centering elements 35 and 55 during the setting time of the curable material 33 and 53 in the borehole 34 and 54 in position and are thereby secured against slipping out of the borehole 34 and 54 respectively.
  • each well 34 is filled with a mortar as hardenable mass 33, wherein advantageously a jam is used, which largely prevents unwanted air inclusions during the filling process in the hardenable mass 33.
  • the anchor rod 11 is inserted into the filled well 34.
  • a beveled washer 36 is guided.
  • the angle beta of the chamfer 37 of the washer 36 to the axis 39 of the passage opening 38 for the anchor rod 11 corresponds to the angle alpha of the borehole 34 to the surface 8 of the flat ceiling 6.
  • a sealing washer 40 is provided which is acted upon by the biasing means 32 and a Verhellkanal 41 has. Through the filling channel 41 a sealant is filled, which closes any leaks in this area.
  • boreholes 54 are again first made up to the level of the upper reinforcement 9 of the flat ceiling 6 created at an angle delta of about 50 ° to the surface 8 of the flat ceiling 6 and the support 7 out. Subsequently, for each borehole 54, a depression 56, which is centrally arranged relative to the borehole 54 and open towards the surface 8 of the flat roof 6, is created, for example, with a coring bit. Then, each well 34 is filled with a mortar as hardenable mass 53 and inserted into the recess 56, a cup-shaped reinforcing element 66.
  • the anchor rod 21 is inserted into the filled borehole 54.
  • a two-piece washer 61 is guided as a supporting device, which is acted upon by means of the clamping screw as a biasing means 52.
  • the washer 61 comprises a first part 62 with a convex receptacle and a second part 63 with a concave, complementary to convex recording trained projection.
  • the first part 62 of the washer 61 may be formed, for example, as a sealing washer.
  • the depression 56 is finally filled with a fire protection mortar as filling compound 58.
  • the cup-shaped reinforcing element 66 shown in section in FIG. 6 has a configuration that is essentially complementary to the depression 56.
  • the circular-shaped reinforcing element 66 has a bottom section 67 with a passage opening 68 for the anchor rod 21 and a wall section 69 which varies in height.
  • the minimum height H1 and the maximum height H2 are selected such that the reinforcing element 66 does not project beyond the surface 8 of the flat ceiling 6 in the state inserted into the depression 56.
  • the angle gamma of the slope 71 to the axis 70 of the passage opening 68 for the anchor rod 21 corresponds to the angle alpha of the borehole 54 to the surface 8 of the flat ceiling 6.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Piles And Underground Anchors (AREA)
  • Reinforcement Elements For Buildings (AREA)
EP07116741.5A 2006-09-28 2007-09-19 Tige d'ancrage et dispositif destiné au renforcement de composants existants contre le cisaillement à l'aide d'une telle tige d'ancrage Withdrawn EP1905923A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006000486A DE102006000486A1 (de) 2006-09-28 2006-09-28 Ankerstab und Anordnung zum Verstärken von bestehenden Bauteilen gegen Durchstanzen mit einem solchen Ankerstab

Publications (2)

Publication Number Publication Date
EP1905923A2 true EP1905923A2 (fr) 2008-04-02
EP1905923A3 EP1905923A3 (fr) 2013-04-10

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EP07116741.5A Withdrawn EP1905923A3 (fr) 2006-09-28 2007-09-19 Tige d'ancrage et dispositif destiné au renforcement de composants existants contre le cisaillement à l'aide d'une telle tige d'ancrage

Country Status (3)

Country Link
US (1) US20080080945A1 (fr)
EP (1) EP1905923A3 (fr)
DE (1) DE102006000486A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2236686A1 (fr) * 2009-04-03 2010-10-06 F.J. Aschwanden AG Elément d'armature pour la reprise des efforts dans les dalles en béton aux alentours d'éléments d'appui
EP2239391A1 (fr) 2009-04-06 2010-10-13 Ecole Polytechnique Fédérale de Lausanne Élément de renforcement pour construction en béton
EP2439359A1 (fr) * 2010-10-06 2012-04-11 F.J. Aschwanden AG Procédé de renforcement de plaques bétonnées dans le domaine d'éléments d'appui
DE102011102825A1 (de) 2011-05-30 2012-12-06 Universität Innsbruck Verbindungsanordnung und Verfahren zur Herstellung einer Durchstanzsicherung bzw. eines Bewehrungsanschlusses
EP2902645A1 (fr) 2014-01-31 2015-08-05 TOGE Dübel GmbH & Co. KG Vis destinée à être vissée dans un trou de forage et agencement de précontrainte doté d'une telle vis vissée dans le trou de forage
EP2518236A3 (fr) * 2011-04-27 2017-03-15 HILTI Aktiengesellschaft Dispositif d'ancrage destiné à la fixation d'une plaque sur une structure de base porteuse

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DE102009047770A1 (de) * 2009-08-14 2011-05-26 Andreas Stahl Anordnung zur Sicherstellung wasserdichter Verdübelungen
JP5594889B2 (ja) * 2010-11-08 2014-09-24 株式会社ケー・エフ・シー コンクリート躯体の耐震補強構造及び耐震補強工法
JP5610625B2 (ja) * 2010-11-09 2014-10-22 株式会社ケー・エフ・シー コンクリート躯体の剪断補強構造及び剪断補強工法並びに剪断補強材
DE102011085058A1 (de) * 2011-10-24 2013-04-25 Hilti Aktiengesellschaft Verbundanker
DE102014018098A1 (de) * 2014-12-05 2016-06-09 Danny Mangner Nachrüstbare Brandschutzplatte in Doppel- und Hohlböden für Revisionsklappen und Revisionsplatten im Parkettbereich
DE102015213869A1 (de) * 2015-07-22 2017-01-26 Prof. Feix Research & Development Gmbh & Co. Kg Verstärkungselement zum Verstärken eines Bauelements, Verstärkungsanordnung umfassend ein derartiges Verstärkungselement sowie Verfahren zum Verstärken eines Bauelements
CN105926469B (zh) * 2016-05-24 2017-10-03 舟山市宏达交通工程有限责任公司 内置加强筋的桥梁加固装置及工艺
EP3273074A1 (fr) * 2016-07-18 2018-01-24 HILTI Aktiengesellschaft Tige d'ancrage pour un systeme d'ancrage composite
DE102016125201A1 (de) * 2016-12-21 2018-06-21 Ludwig Hettich Holding Gmbh & Co. Kg System zum Fügen oder Armieren von Bauteilen
JP6941702B2 (ja) * 2017-03-14 2021-09-29 成和リニューアルワークス株式会社 蓋材

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2236686A1 (fr) * 2009-04-03 2010-10-06 F.J. Aschwanden AG Elément d'armature pour la reprise des efforts dans les dalles en béton aux alentours d'éléments d'appui
EP2239391A1 (fr) 2009-04-06 2010-10-13 Ecole Polytechnique Fédérale de Lausanne Élément de renforcement pour construction en béton
EP2439359A1 (fr) * 2010-10-06 2012-04-11 F.J. Aschwanden AG Procédé de renforcement de plaques bétonnées dans le domaine d'éléments d'appui
CN102444238A (zh) * 2010-10-06 2012-05-09 F·J·阿舍万登有限公司 用于加强位于支撑元件附近的混凝土板的方法
US8429877B2 (en) 2010-10-06 2013-04-30 F.J. Aschwanden Ag Method for reinforcement of concreted plates in the region of support elements
EP2518236A3 (fr) * 2011-04-27 2017-03-15 HILTI Aktiengesellschaft Dispositif d'ancrage destiné à la fixation d'une plaque sur une structure de base porteuse
DE102011102825A1 (de) 2011-05-30 2012-12-06 Universität Innsbruck Verbindungsanordnung und Verfahren zur Herstellung einer Durchstanzsicherung bzw. eines Bewehrungsanschlusses
WO2012163856A1 (fr) 2011-05-30 2012-12-06 Universität Innsbruck Ensemble d'assemblage et procédé de production d'une consolidation contre la perforation, d'un renfort de force transversale supplémentaire ou d'un raccordement d'armature
DE102011102825B4 (de) * 2011-05-30 2016-04-14 Prof. Feix Research & Development Gmbh & Co. Kg Verbindungsanordnung und Verfahren zur Herstellung einer Durchstanzsicherung
EP2902645A1 (fr) 2014-01-31 2015-08-05 TOGE Dübel GmbH & Co. KG Vis destinée à être vissée dans un trou de forage et agencement de précontrainte doté d'une telle vis vissée dans le trou de forage
DE102014201811A1 (de) 2014-01-31 2015-08-06 Toge Dübel Gmbh & Co. Kg Schraube zum Einschrauben in ein Bohrloch und Vorspann-Anordnung mit einer derartigen in das Bohrloch eingeschraubten Schraube
EP2902645B1 (fr) * 2014-01-31 2018-08-29 TOGE Dübel GmbH & Co. KG Vis destinée à être vissée dans un trou de forage et agencement de précontrainte doté d'une telle vis vissée dans le trou de forage

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Publication number Publication date
DE102006000486A1 (de) 2008-04-10
US20080080945A1 (en) 2008-04-03
EP1905923A3 (fr) 2013-04-10

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