EP2166172B1 - Dispositif d'armature d'une structure en béton contre le poinçonnement aux alentours de la zone d'appui d'une dalle et élément d'armature de poinçonnement relatif - Google Patents

Dispositif d'armature d'une structure en béton contre le poinçonnement aux alentours de la zone d'appui d'une dalle et élément d'armature de poinçonnement relatif Download PDF

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Publication number
EP2166172B1
EP2166172B1 EP09012090.8A EP09012090A EP2166172B1 EP 2166172 B1 EP2166172 B1 EP 2166172B1 EP 09012090 A EP09012090 A EP 09012090A EP 2166172 B1 EP2166172 B1 EP 2166172B1
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EP
European Patent Office
Prior art keywords
elements
compressive
tensile reinforcement
arrangement according
anchor
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EP09012090.8A
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German (de)
English (en)
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EP2166172A1 (fr
Inventor
Thomas Mösch
Marc Barras
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Ancotech AG
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Ancotech AG
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/43—Floor structures of extraordinary design; Features relating to the elastic stability; Floor structures specially designed for resting on columns only, e.g. mushroom floors
    • 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 extent, e.g. lattice girders
    • E04C5/0645—Shear reinforcements, e.g. shearheads for floor slabs

Definitions

  • the invention relates to an arrangement for reinforcing a concrete structure against punching in the area of the support of a ceiling element on a support with a plurality of anchor elements and punching shear elements for this purpose.
  • the anchoring elements are embedded in the ceiling at a lateral distance from one another in a near zone at the side of the support ceiling areas and oriented transversely or obliquely inclined to the ceiling surface.
  • a concrete ceiling such as a building ceiling as a substantially horizontal or slightly inclined component or as a substructure of réellefelzten
  • traffic engineering Structures such as ramps or bridges for vehicles of any kind or the like occur in the near zone laterally of the support structure, such as a round or polygonal support made of steel or concrete or corresponding wall-like structures, and in particular for stand-alone pillars puncture risks, ie, that the concrete floor in a near zone demolition and thus collapse is endangered.
  • FIG. 1 represented, in which a welded frame 1 'made of U-iron with an inner web-like cross 2' in a concrete ceiling 3 'in the region of a columnar support 4' is concreted and stored on the column head.
  • the EP 1 223 259 B1 discloses the star or radial arrangement of perforated shear reinforcement sheets.
  • a star-shaped arrangement of perforated sheets for shear reinforcement can also the WO 01/5323 A2 be removed.
  • the DE 2727159 C3 describes a reinforcement arrangement according to the preamble of claim 1 and a punching reinforcement element according to the preamble of claim 1.
  • the present invention seeks to propose a comparatively simple reinforcement arrangement and a corresponding fürstanz suitssbewehrungselement.
  • a reinforcement arrangement with the features of claim 1 and a punching stock reinforcement element with the features of claim 14 is proposed.
  • the invention is based on the basic idea of aligning one or more oblong anchor elements, which are transverse or oblique to the ceiling surface, along at least one shear or tensile reinforcement element and thus relieve the endangered concrete cross section in the manner of a truss.
  • This is at least one, in particular rigid, shear or tensile reinforcement element which is arranged inclined at least over a partial length to the direction of extension of the anchor elements at an angle, wherein the anchor elements are preferably designed in rod form.
  • the shear or tensile reinforcement elements made such that they extend in a central region between the ends of the anchor elements. The effect of this particular combination of shear and compression reinforcement elements will be further explained below.
  • the anchor elements and the shear or tensile reinforcement elements, along which the anchor elements are aligned, can in principle be arranged unconnected to one another, since after setting of the concrete, this establishes an operative connection between the two. They may also be temporary, e.g. be secured by wire together. Preferably, however, they are firmly welded together. As a result, the highest reinforcement effects are achieved and processing is greatly facilitated.
  • the orientation of the one or more anchor elements along at least one shear or tensile reinforcement element relative to the support can be basically along a freely selectable lines, such as a single or multiple waveform or along a polygon.
  • the anchor elements may vary in their lateral distance to the shear or tensile reinforcement elements. They are preferably applied to the push or tensile reinforcement element. They may be arranged on one or both sides of the shear or tensile reinforcement element or receive the shear or tensile reinforcement element in itself.
  • the anchor elements may be arranged obliquely, d. H. At an angle to the vertical, this angle may be greater than about 1 °, preferably this angle to the vertical may be less than about 45 °. In a particularly preferred embodiment, the angle between the anchor elements and the vertical is about 20 °.
  • the anchor elements can also be arranged vertically in the inclined ceiling surface. It is also possible, the anchor elements obliquely, d. H. to arrange with a slope relative to the vertical in a horizontally oriented ceiling. This also applies to ceilings whose ceiling surfaces have no inclination relative to the horizontal.
  • shear or tensile reinforcement elements with the associated Druckbewehrungs- or anchor elements are starry or radial with respect to the support, in the near zone they are to be arranged in the ceiling aligned.
  • the arrangement of shear or tensile reinforcement elements according to the invention also also causes the eruption cone, which can be caused by the support, to be laterally needled, so that the statics of the punching reinforcement are improved.
  • shear or tensile reinforcement elements are used, which are arranged parallel to a reference plane spanned by the anchor elements. These shear or Werbeschungs institute may be at least partially oriented diagonally to the orientation of the anchor elements, the slope in the portion which is inclined to the anchor elements, between the shear or Werbestattungselement and the extension direction of the reinforcement assembly between 10% and 100% and especially may preferably be on the order of 45%.
  • a shear or tensile reinforcement element formed as a strut element can also be provided.
  • the surfaces of the shear or tensile reinforcement elements have a surface profile. It can be provided to further increase the bond with the concrete openings or openings in the shear or tensile reinforcement element.
  • Double-headed anchors consist of an anchor bolt and provided at the ends anchor heads, relatively larger cross-section.
  • the ironing anchors also have an elongated shape, with bow-shaped connecting regions taking over the function of an anchor head between parallel, straight, stretched regions.
  • High-strength composite anchors have known distributed over the rod length, distinctive profiles in different designs.
  • end anchoring means can be provided.
  • the shear or tensile reinforcement elements can also be formed in several parts, wherein the parts of the push or tensile reinforcement element can be arranged either on one side of the anchor elements or on both sides. It may be expedient if the multi-part shear or tensile reinforcement elements are at least partially interconnected. In a particular embodiment, the shear or tensile reinforcement elements may also be formed bow-shaped.
  • the push or pull reinforcement element may be circular or substantially oval in shape, with the plane in which the shear or tensile reinforcement element is disposed being substantially parallel to the plane defined by the anchor elements.
  • FIG. 2A is from the outer periphery of a support 4 shown in half of star-shaped apart punching shear elements 10, each consisting of a straight directed shear or tensile reinforcement element 12 and along this aligned anchor elements 14 in the form of Doppelkopfankem, as in side view FIG. 2B can be seen.
  • All punching shear reinforcement elements are as in FIG. 2B illustrated, poured into a concrete pavement 3, wherein the parallel planes spanned by the anchor elements 14 on the one hand and by the shear or tensile reinforcement elements 12 on the other hand extend approximately at right angles to the surface normal of the concrete pavement 3.
  • ten anchor elements 14 are provided for each punching reinforcement element 10. This number can be bigger and smaller.
  • the length of the punching reinforcement elements 10 in the direction of the longitudinal extension of the shear or tensile reinforcement elements 12 will vary depending on the application and requirement.
  • the shear or tensile reinforcement elements 12 are formed like a strut.
  • Fig. 3A shows an embodiment with two struts 12A, 12B, which are arranged crossed one another.
  • the anchor elements 14 are formed from a bracket with two upright parallel struts 14A and have at the upper and lower ends of connecting U-shaped bracket 14B.
  • the push or tensile reinforcement element 12 is fastened with respect to one of the struts 14A in the inside of the temple.
  • a portion (or a partial length) 13 of the strut element is inclined relative to the horizontal or relative to the orientation of the concrete surface 3 by an angle, whereby the course of the strut element in the section 13 has a slope.
  • Fig. 3C shows a similar embodiment as Fig. 3B with the lower difference, the shear or tensile reinforcement element 12 and the strut have a shorter portion 13, which is inclined relative to only one anchor element 14.
  • the slope of section 13 is larger here than in the example according to Fig. 3B , Of the Fig.
  • 3D is another Schub- or Werbeschungselement 12 'can be seen, which is shown in dots, and in which the inclined portion 13' is laterally offset relative to that of the first shear or Werbeschungsiatas 12, so that not a middle but a marginal anchor element is crossed ,
  • this offset there is no limitation, so that it may be larger and smaller, for example, and alternatively may be arranged in the opposite direction.
  • a corresponding offset can be provided if not only one strut element is provided per punching reinforcement element.
  • the offset corresponds to the distance between adjacent anchor elements 14.
  • it can also be provided to arrange two or more strut elements with different degrees inclined portion 13.
  • Fig. 4A are shear or tensile reinforcement elements 12 formed in several parts.
  • Fig. 4B can multipart shear or tensile reinforcement elements 12 also be connected to each other.
  • the shear or tensile reinforcement elements 12 can according to Fig. 4B be arranged on both sides of the anchor elements 14 or alternatively on only one of the sides (not shown in the FIGS. 4A and 4B ).
  • the shear or tensile reinforcement elements 12 according to the FIGS. 4A and 4B have no horizontally oriented portion, whereby the portion 13, which is arranged at an angle to the anchor elements 14, extends over the entire length of the push or tensile reinforcement element 12.
  • the anchor elements 14 may be arranged on the head side in the region of a grid reinforcement 17 or a per se known head strut.
  • FIG. 5A and 5B shows Schub- or Werbeschungs institute 12 with Endverank fürsmitteln 18. These are executed in the illustrated Aus technologicalurtgsbeispiel as round rod sections, the same preferably inserted at different heights of the push or Werbeschungsijns 12 through holes therethrough and welded thereto or welded butt-end. From the Figs. 5A and 5B it can be seen that the end anchoring means 18 eg on both sides of the push or tensile reinforcement element 12 can protrude ( Fig. 5A ). But you can also summarize several punching reinforcement elements 10 as a group. FIG. 5B shows in this respect two combined punching reinforcement elements 10, which are connected by a rod-shaped end anchoring means 18 with each other. This arrangement is particularly easy to handle even when installed in the ceiling reinforcement.
  • FIGS. 6A to 6C be removed.
  • the shear or tensile reinforcement elements 12 are formed bow-shaped.
  • the shear or tensile reinforcement elements 12 may also be formed substantially annular or oval.
  • ends arranged heads 15 may be provided with preferably flat end faces.
  • these heads 15 may be inclined relative to the orientation of the push or pull reinforcement elements 12. Again Fig. 6C it can be seen, the inclination of the heads 15 of the shear or tensile reinforcement elements 12 may be selected so that the flat end face of the heads 15 is aligned substantially parallel to the end face of the anchor heads 14D, 14E.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Working Measures On Existing Buildindgs (AREA)

Claims (15)

  1. Dispositif d'armature d'une structure en béton contre le poinçonnement aux alentours de la zone d'appui d'une dalle sur un pilier avec une pluralité d'éléments d'ancrage (14) et au moins un élément d'armature de cisaillement et de traction (12) oblong, les éléments d'ancrage (14) étant enrobés dans la dalle (3) dans des zones de dalle d'au moins une rangée placées avec un écart latéral l'une de l'autre dans une zone proche à côté du pilier et orientés perpendiculairement ou inclinés en diagonale par rapport à la surface de la dalle et l'élément d'armature de cisaillement ou de traction (12) oblong étant orienté le long d'une rangée et monté solidement sur au moins un des éléments d'ancrage (14) caractérisé en ce que l'élément d'armature de cisaillement ou de traction (12) est disposé incliné dans un angle au moins sur une longueur partielle (13) dans le sens d'extension des éléments d'ancrage (14) attribués.
  2. Dispositif selon la revendication 1 caractérisé en ce que les éléments d'ancrage (14) et l'élément d'armature de cisaillement ou de traction (12) fixent des plans qui sont disposés parallèlement l'un à l'autre.
  3. Dispositif selon la revendication 1 ou 2 caractérisé en ce que l'orientation des éléments d'armature de cisaillement ou de traction (12) est prévue le long d'un plan s'étendant en ligne droite.
  4. Dispositif selon une quelconque des revendications 1 à 3 caractérisé en ce que les éléments d'armature de cisaillement ou de traction (12) sont disposés en forme d'étoile par rapport au pilier (4).
  5. Dispositif selon une quelconque des revendications 1 à 4 caractérisé en ce que les éléments d'armature de cisaillement ou de traction (12) sont réalisés comme des éléments d'étrésillon.
  6. Dispositif selon une quelconque des revendications 1 à 5 caractérisé en ce que les éléments d'armature de cisaillement ou de traction (12) présentent un profil de surface augmentant l'adhérence du béton.
  7. Dispositif selon une quelconque des revendications 1 à 6 caractérisé en ce que les éléments d'armature de cisaillement ou de traction (12) présentent au moins un moyen (18) d'ancrage d'extrémité.
  8. Dispositif selon une quelconque des revendications 1 à 7 caractérisé en ce que les éléments d'armature de cisaillement ou de traction (12) présentent une tête (15) au moins à une de leurs extrémités.
  9. Dispositif selon une quelconque des revendications 1 à 8 caractérisé en ce que les éléments d'ancrage (14) sont reliés aux éléments d'armature de cisaillement ou de traction (12).
  10. Dispositif selon une quelconque des revendications 1 à 9 caractérisé en ce que les éléments d'ancrage (14) sont conçus comme ancrages de tête doubles.
  11. Dispositif selon une quelconque des revendications 1 à 10 caractérisé en ce que les éléments d'ancrage (14) sont réalisés en forme d'étrier.
  12. Dispositif selon une quelconque des revendications 1 à 11 caractérisé en ce que les éléments d'armature de cisaillement ou de traction (12) sont multiples, les éléments d'armature de cisaillement ou de traction (12) étant de préférence au moins reliés entre eux par zone.
  13. Dispositif selon une quelconque des revendications 1 à 12 caractérisé en ce que les éléments d'armature de cisaillement ou de traction (12) sont constitués en forme d'étrier.
  14. Elément d'armature résistant au poinçonnement pour armer une structure en béton contre le poinçonnement aux alentours de la zone d'appui d'une dalle sur un pilier (4) avec une pluralité d'éléments d'ancrage (14) et au moins un élément d'armature de cisaillement et de traction (12) oblong, les éléments d'ancrage (14) étant enrobés dans la dalle (3) dans des zones de dalle d'au moins une rangée placées avec un écart latéral l'une de l'autre dans une zone proche à côté du pilier et orientés perpendiculairement ou inclinés en diagonale par rapport à la surface de la dalle et l'élément d'armature de cisaillement ou de traction (12) oblong étant orienté le long d'une rangée et monté solidement sur au moins un des éléments d'ancrage (14) caractérisé en ce que l'élément d'armature de cisaillement ou de traction (12) est disposé incliné dans un angle au moins sur une longueur partielle (13) dans le sens d'extension des éléments d'ancrage (14) attribués.
  15. Elément d'armature résistant au poinçonnement selon la revendication 14 caractérisé par au moins une des caractéristiques caractérisantes des revendications 5 à 13.
EP09012090.8A 2008-09-23 2009-09-23 Dispositif d'armature d'une structure en béton contre le poinçonnement aux alentours de la zone d'appui d'une dalle et élément d'armature de poinçonnement relatif Active EP2166172B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202008012547U DE202008012547U1 (de) 2008-09-23 2008-09-23 Anordnung zum Bewehren eines Betonbauwerkes gegen Durchstanzen im Bereich der Auflage eines Deckenelementes auf einer Stütze sowie Durchstanzbewehrungselement hierfür

Publications (2)

Publication Number Publication Date
EP2166172A1 EP2166172A1 (fr) 2010-03-24
EP2166172B1 true EP2166172B1 (fr) 2013-05-22

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Application Number Title Priority Date Filing Date
EP09012089.0A Active EP2166171B1 (fr) 2008-09-23 2009-09-23 Armature de poinçonnement d'une structure en béton armé contre le poinçonnement aux alentours de la zone d'appui d'une dalle
EP09012090.8A Active EP2166172B1 (fr) 2008-09-23 2009-09-23 Dispositif d'armature d'une structure en béton contre le poinçonnement aux alentours de la zone d'appui d'une dalle et élément d'armature de poinçonnement relatif

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EP09012089.0A Active EP2166171B1 (fr) 2008-09-23 2009-09-23 Armature de poinçonnement d'une structure en béton armé contre le poinçonnement aux alentours de la zone d'appui d'une dalle

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EP (2) EP2166171B1 (fr)
DE (1) DE202008012547U1 (fr)
PL (1) PL2166171T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100971736B1 (ko) * 2009-04-03 2010-07-21 이재호 상하 각각 이중 앵커리지 기능을 갖는 전단보강재
EP3181771A1 (fr) 2015-12-18 2017-06-21 Ancotech Ag Élément en forme de croix pour le renforcement d'une zone à risque de perforation d'un élément en béton, pile en acier et dispositif pour un pile en acier, dispositif de renforcement, kit de montage pour un renfort antiperforation et procédé de montage d'un renfort antiperforation
DE202015008645U1 (de) 2015-12-18 2017-03-21 Ancotech Ag Stahlpilz für einen durchstanzgefährdeten Bereich eines Betonbauteils sowie Verstärkungsanordnung mit einem Stahlpilz

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GB191407210A (en) * 1914-03-21 1914-10-29 Guy Bennett Waite Improvements in Reinforced Concrete Buildings.
DE2058714A1 (de) * 1970-11-28 1972-11-16 Remy Friedr Nfg Betonrippenplatte
DE2727159C3 (de) 1977-06-16 1980-05-08 7000 Stuttgart Schubbewehrung für auf Betonstützen aufgelagerte Flachdecken aus Stahl- oder Spannbeton
DE3411591C1 (de) * 1984-03-29 1985-06-13 Hochtief Ag Vorm. Gebr. Helfmann, 4300 Essen Schubbewehrungselement fuer Stahlbetonkonstruktionen
DE3417330C1 (de) * 1984-05-10 1985-09-19 Andrä, Wolfhart, Dr.-Ing., 7000 Stuttgart Anschluss einer Ortbetonplatte an eine vorgefertigte Stuetze
AT382188B (de) * 1984-07-24 1987-01-26 Avi Alpenlaendische Vered Schubbewehrungssystem fuer flaechentragwerke
DE3520129A1 (de) * 1985-06-05 1986-12-11 Stahlbau Michael Lavis Söhne, 6050 Offenbach Stahlverbunddecke
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GB2235221B (en) * 1989-08-21 1993-08-25 Square Grip Ltd Shearhead reinforcement
CH690920A5 (de) * 1995-12-30 2001-02-28 Ancotech Ag Bewehrung für auf Stützen aufgelagerte Flachdecken, Schubbewehrungselement sowie ein Verfahren zur Herstellung einer Bewehrung.
PL323253A1 (en) * 1996-03-26 1998-03-16 Sicon S R O Joint for precast concrete units
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EP0928859A1 (fr) * 1998-01-13 1999-07-14 Pecon AG Armature de cisaillement
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DE10002383A1 (de) * 2000-01-20 2001-07-26 Oliver Matthaei Querkraftbeanspruchtes Stahl- oder Spannbetonteil
EP1223259B1 (fr) * 2001-01-12 2008-10-01 Ancotech Ag Armature pour planchers à dalles supportés par des colonnes ainsi que procédé pour la fabrication d'une armature
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Publication number Publication date
EP2166171B1 (fr) 2019-05-22
DE202008012547U1 (de) 2010-02-11
EP2166171A1 (fr) 2010-03-24
EP2166172A1 (fr) 2010-03-24
PL2166171T3 (pl) 2019-10-31

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