EP3382119B1 - Ancrage pour mur creux ainsi que dispositif pourvu d'un tel ancrage - Google Patents

Ancrage pour mur creux ainsi que dispositif pourvu d'un tel ancrage Download PDF

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Publication number
EP3382119B1
EP3382119B1 EP18164356.0A EP18164356A EP3382119B1 EP 3382119 B1 EP3382119 B1 EP 3382119B1 EP 18164356 A EP18164356 A EP 18164356A EP 3382119 B1 EP3382119 B1 EP 3382119B1
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EP
European Patent Office
Prior art keywords
section
cavity wall
wall tie
anchoring
shaft section
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
EP18164356.0A
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German (de)
English (en)
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EP3382119A1 (fr
Inventor
Thomas Dipl.-Kfm Wolff
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H & R GmbH
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H & R GmbH
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Publication date
Application filed by H & R GmbH filed Critical H & R GmbH
Publication of EP3382119A1 publication Critical patent/EP3382119A1/fr
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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
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
    • E04B1/4178—Masonry wall ties
    • E04B1/4185—Masonry wall ties for cavity walls with both wall leaves made of masonry

Definitions

  • the invention relates to an air layer anchor made of metal for connecting an inner masonry shell to an outer masonry shell arranged at a distance from the inner masonry shell, comprising a shank section which essentially bridges the distance between the shells, a first anchoring section formed on the shank section at one end for anchoring the Air layer anchor in a joint of an inner masonry shell and a second anchoring section formed on the shaft section at its other end for anchoring the air layer anchor in a joint of an outer masonry shell, a transition section being provided between the anchoring sections and the shaft section.
  • Air-layer anchors are used to connect the two masonry shells of a double-shell masonry.
  • an outer, non-load-bearing outer shell is arranged in front of an inner, load-bearing inner shell.
  • the space between the two masonry shells can either be left free in order to ventilate the outer masonry or be completely or partially filled with an insulating material.
  • Air layer anchors are used to connect the outer masonry shell to the inner masonry shell.
  • such an air layer anchor has an anchoring section in each case, which typically engages in a masonry joint and is anchored therein by the adhesive or mortar used.
  • Such an air layer anchor is off DE 297 18 804 U1 known.
  • the air layer anchor is placed with its anchoring section assigned to this masonry shell on an upper stone layer coated with adhesive or mortar, before this anchoring section is used to fix the air layer anchor through a stone above located position is fixed.
  • the adhesive or mortar has hardened, the air layer anchor is anchored in the adhesive or mortar layer.
  • EP 1 584 763 A1 also discloses an air layer anchor of the aforementioned type.
  • a number of stiffening structures in the form of beads are introduced in a transition section between the shaft and anchoring section in order to stiffen this transition section.
  • Air-layer dowel anchors are also known in which the first anchoring section provided for anchoring in the first masonry shell is not necessarily inserted into a layer of adhesive or mortar, but is inserted into a drill hole filled with mortar and previously filled into a stone of the inner masonry shell.
  • Such air layer anchors are made from a sheet metal plate.
  • the round shaft section is formed by rolling the sheet metal blank around its longitudinal axis.
  • the anchoring sections have a greater width than the shaft section.
  • the one anchoring section often the one provided for anchoring the air layer anchor in the outer masonry shell, has been created by flattening the round end section of the shaft section. For this reason, such an anchoring section is wider than the shaft section. If the air layer anchor is an air layer dowel anchor, the other anchoring section can also be designed in this way.
  • the relevant anchoring section is made as thin as possible. Therefore, this anchoring section is not created by flattening the shaft section, but this anchoring section is part of the original plate which was not reshaped to form the rounded shaft section.
  • thin anchoring sections are particularly desired when building inner masonry shells, in which the individual stones are connected to one another with a thin layer of adhesive.
  • Both anchoring sections can have structures that increase pull-out force, such as, for example, punched-out edges or openings made therein.
  • air layer anchors have proven themselves and have been used for decades.
  • When installing the air layer anchors in the inner masonry shell especially if the air layer anchors are to be anchored in the joints of the inner masonry shell, make sure that the entire anchoring section is embedded in the adhesive or mortar of the joint.
  • the necessary attention is often not paid to this, with the result that the air layer anchors protrude from the inner masonry shell in different lengths.
  • the air layer anchors are fixed, as has already been shown above, until the adhesive or mortar hardens by a stone of the next stone layer placed on the anchoring section of the air layer anchor engaging in the adhesive or mortar.
  • the air layer anchors are set, it is necessary to bend them down so that they do not protrude unnecessarily from the inner masonry shell in order to avoid injuries, until the outer masonry shell is erected. Only when the outer masonry shell is erected are the air layer anchors bent back into their intended horizontal extension. It is not unproblematic that the two bending processes typically do not take place on one and the same bending axis but on bending axes that are spaced apart from one another, so that these two bends result in a cranking. This is undesirable since tensile and shear loads can lead to the destruction of this S-shaped crank.
  • the invention is therefore based on the object of improving a generic air layer anchor with regard to the disadvantages mentioned.
  • an air layer anchor of the generic type mentioned at the outset which is L-shaped in the delivery state, since the first anchoring section is angled with respect to the longitudinal extension of the shaft section, the zone of the angling being delimited by a stiffening structure on its side facing the shaft section .
  • the first anchoring section specifically the one which is provided for anchoring the air layer anchor in the inner masonry shell, is already angled by the manufacturer in relation to the shaft section.
  • Such an air layer anchor is therefore L-shaped in the delivery state. Since this is done by the manufacturer, the bends or the resulting edges are always in the same place for each air layer anchor of a type.
  • This defined angled zone, through which the angled anchoring section is connected to the other sections of the air layer anchor can be designed with a relatively small radius, this radius typically being less than 3 mm - 4 mm. According to one embodiment, a radius of approximately 2 mm is provided.
  • the side of the bend facing the shaft section is delimited by a stiffening structure.
  • this stiffening structure is provided by the adjacent transition section, which is formed by the beginning transition into the rounded shaft shape, which represents a stiffening opposite the flat anchoring section. If the first anchoring section has a single-layer design, the transition section begins with the material being rolled up in the direction of the shaft section.
  • an air layer anchor is provided which is attached to an adhesive or mortar layer of an upper brick layer of the inner masonry shell with it Anchoring section can be placed without this falling down.
  • an air layer anchor is suspended on such an adhesive or mortar layer.
  • no stone placed on this anchoring section is required to fix the air layer anchor. Consequently, due to the thus simplified installation of these air layer anchors, an inner masonry shell can be erected in a significantly shorter time than was possible when using conventional air layer anchors.
  • the pre-made angle by which the first anchoring section is angled with respect to the shaft section also provides an assembly jig for defining the installation position, namely how far the shaft section is to be brought up to the outside of the inner masonry shell.
  • the air layer anchor is brought up to the outside of the inner masonry shell until either the outer surface of the shaft section adjoins the inside of the inner masonry shell, which is the case at an angle of 90 degrees or about 90 degrees, or until the inner radius of the bend meets the upper one reaches the outer edge of that stone layer on which the adhesive or mortar layer of the anchoring section is to be placed or pressed.
  • An embodiment is considered advantageous in which one of the two flat sides of the anchoring section provided for anchoring in the inner masonry shell is in alignment with the outer surface of the shaft section.
  • the material is rolled up until the end faces of the rolled up sections of the metal blank meet at the end of the transition section.
  • the anchoring section is angled in the direction of that side which is aligned with the lateral surface of the shaft section. This allows this anchoring section to be installed in a joint in the inner masonry shell up to the bend.
  • the bend which is limited in the direction of the shaft section by a stiffening structure, for example the beginning of the transition section, is on its side facing the anchoring section by the stones of the inner masonry shell or the adhesive, which lie one on top of the other and are connected to one another by an adhesive or mortar layer limited by the mortar of the joint.
  • the anchoring section is angled in the other direction compared to the embodiment described above. Then the bend is limited on its side facing the anchoring section by a stiffening structure, for example a transverse bead, so that it is ensured in this way that the bending back of the air layer anchor into its intended horizontal extension also in the area of the bend (bend ) takes place in which the anchoring section is angled relative to the shaft section.
  • a stiffening structure for example a transverse bead
  • Such an air layer anchor is typically made from a stainless steel that has sufficient deformability, in particular ductility.
  • a chromium-nickel steel with added molybdenum is suitable for this purpose.
  • the intermediate product 1 shown for forming an air layer anchor comprises a central shaft section 2 and two anchoring sections 3, 4 formed thereon. Each anchoring section 3, 4 is connected to the shaft section 2 with a transition section 5, 6 interposed.
  • the preliminary product 1 is made from a Cr-Ni steel with an addition of Mo.
  • the material for the air layer anchor does not necessarily have to be a Cr-Ni steel with the addition of Mo. Rather, it can be any suitable material that has a sufficient quality.
  • the starting product is a corresponding board with a thickness of about 0.5 mm.
  • the anchoring section 3 has a single layer. In the Figure 1 The recognizable width of the anchoring section 3 represents the width of the board. To form the shaft section 2, the long sides of the board have been rolled up.
  • the shaft section 2 is thus designed as a tubular section.
  • the joint of the two rolled-up sections which abut one another with their long sides is identified in the figure with the reference number 7.
  • the relevant part of the previously round shaft section 2 is flattened so that the anchoring section 4 also has a greater width than the shaft section 2.
  • 3 clamping perforations 8 are made in the anchoring section. These are designed as holes, with the hole edge area embossed to stiffen and improve the bracing (in Figure 2 not shown).
  • the anchoring section 4 several semicircular cutouts 9 have been introduced as clamping structures at the edge. The clamping perforations 8 and the punchings 9 support the clamping of the anchoring sections 3 and 4 with an adhesive or mortar.
  • transition section 5 between the anchoring section 3 and the shaft section 2 begins immediately with a doubling of material, which results in a distinct stiffening compared to the otherwise tab-like anchoring section 3.
  • Figure 2 shows the preliminary product 1 in a side view. From this it can be seen that the in Figure 1 The lower flat side 10 of the anchoring section 3 shown is aligned with the lateral surface 11 of the shaft section 2. You can clearly see in Figure 2 also the flattening of the anchoring section 4 with respect to the shaft section 2.
  • an air layer anchor 12 is produced from the preliminary product 1 by the anchoring section 3, which is provided for engaging in a joint of an inner masonry shell, being angled with respect to the shaft section 2, in the embodiment shown by about 90 degrees (see Fig. Figure 3 ).
  • the air layer anchor 12 is shown in a side view. This bending has been carried out by the manufacturer, using appropriate tools.
  • the anchoring section 3 is therefore straight and not influenced by the bending process for forming the bend 13.
  • the anchoring section 3 is used to hang the same on the upper brick layer of an inner masonry shell that is being built.
  • the bend 13 is placed adjacent to the end of the transition section 5, which is used as a stiffening structure, pointing towards the anchoring section 3.
  • the bend is designed with a radius which in the illustrated embodiment is approximately 2 mm.
  • the radius of the bend 13 is selected so that after the bend 13 has been formed, the air layer anchor 12 in the area of the bend 13 zone can also be brought back into its intended straight extension, in which the air layer anchor 12 then corresponds to the preliminary product 1.
  • FIG 4 shows the air layer anchor 12, which is introduced with its anchoring section 3 in an adhesive layer 14 on the upper side of an upper brick layer 15 of an inner masonry shell 16 which is under construction.
  • the anchoring section 3 of the air layer anchor 12 is merely placed on the adhesive layer 14 or is slightly pressed into it. In this way alone, the air layer anchor 12 is fixed and does not need to be additionally held by a worker until a further stone has been placed on the adhesive layer 14 above the anchoring section 3. This results in an acceleration in the time required to erect the inner masonry shell 16.
  • the air-layer anchors 12 protrude from the outside with their shaft section and their anchoring section 4 provided for engaging an outer masonry shell 17 of the inner masonry shell 16, so that the otherwise sometimes necessary step of bending the air layer anchors 12 is also avoided.
  • the representation of the Figure 4 shows that the shaft section 2, which is angled with respect to the anchoring section 3, also provides a stop, by means of which an insertion jig is formed.
  • the shank section 2 abuts with its outer surface 11 on the outside 17 of the already erected masonry shell 16 and thus defines the insertion depth of the anchoring section 3 in the transverse direction to the longitudinal extension of the inner masonry shell 16.
  • This assembly jig ensures that all air layer anchors 12, which are in the inner masonry shell 16 are to be anchored, with their anchoring section 3 engage equally far into the adhesive layer 14 in the transverse direction of the masonry shell 16.
  • the stiffening structure formed by the transition section 5 limits the bend 13 on its side facing the shaft section 2 with the result that, although a certain strain hardening has occurred during the bending process to create the air layer anchor 12 from the preliminary product 1, bending back only occurs on the Angling 13 can take place.
  • Figure 5 shows the air layer anchor 12 in its intended position so that its anchoring section 4 can engage in an outer masonry shell.
  • the angling of the anchoring portion 3 is opposite to Shaft section 2 designed so that the flat side 10 of the anchoring section 3 encloses the aforementioned angle of approximately 90 degrees with the jacket surface 11.
  • FIG. 6 shows the anchoring section 3.1 with the transition section 5.1 adjoining it to the shaft section 2.1 of a further preliminary product 1.1 for forming an air layer anchor 12.1.
  • the preliminary product 1.1 has the same structure as the preliminary product 1 of the above exemplary embodiment. Differences are explained below.
  • the preliminary product 1.1 it is provided that its anchoring section 3.1 is angled in the other direction with respect to the shaft section 2.1, as shown in the side view of FIG Figure 7 is shown.
  • the area of the bend 13.1. is in plan view of Figure 6 of the intermediate product 1.1 identified with the reference symbol 13.1.
  • the bend 13.1 has also been created by the manufacturer with a corresponding bending tool.
  • a bead 18 is embossed in the anchoring section 3.1, namely in the illustrated embodiment in Direction towards the transition section 5.1.
  • the bead 18 has a T-shape, its section running transversely to the longitudinal extension of the anchoring section 3.1 representing the delimitation of the bend 13.1.
  • the bead 18 represents a stiffening structure to limit the zone of the bend 13.1 in the direction of the anchoring leg 3.1.
  • FIG 7 shows the anchoring leg 3.1 inserted into an adhesive layer 14.1.
  • This L-shaped air layer anchor 12.1 also forms a stop on the outside of the masonry shell 16.1 with the jacket surface 11.1 of its shaft section 2.1. If one or more further stone layers have been placed on the adhesive layer 14.1 and the adhesive layer 14.1 has hardened, the air layer anchor 12.1 is when the outer masonry shell is erected. bent up to the bend 13.1 in its intended horizontal extension.
  • the area of the bend 13.1 is on the one hand due to the stiffening effect of the transition section 5.1, as in the embodiment of Figures 1 to 5 described, limited. In the direction of the anchoring leg 3.1, the area of the angled portion 13.1 is delimited by the bead 18 so that bending can actually only take place in this zone.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Piles And Underground Anchors (AREA)

Claims (14)

  1. Ancrage pour mur creux en métal destiné à relier un pan de maçonnerie intérieur (16, 16.1) avec un pan de maçonnerie extérieur placé à distance du pan de maçonnerie intérieur (16, 16.1), comprenant un tronçon de tige (2, 2.1) qui ponte pour l'essentiel l'intervalle entre les pans de maçonnerie, un premier tronçon d'ancrage (3, 3.1) moulé sur l'une des extrémités du tronçon de tige (2, 2.1) destiné à ancrer l'ancrage pour mur creux (12, 12.1) dans un joint d'un pan de maçonnerie (16, 16.1) intérieur et un second tronçon d'ancrage (4, 4.1) moulé sur l'autre extrémité du tronçon de tige (2, 2.1) destiné à ancrer l'ancrage pour mur creux (12, 12.1) dans un joint d'un pan de maçonnerie extérieur, un tronçon intermédiaire (5, 6 ; 5.1) étant respectivement prévu entre les tronçons d'ancrage (3, 4 ; 3.1) et le tronçon de tige (2, 2.1), caractérisé en ce que l'ancrage pour mur creux (12, 12.1) présente selon son état à la livraison une forme de L, étant donné que le premier tronçon d'ancrage (3, 3.1) est coudé par rapport à l'étendue longitudinale du tronçon de tige (2, 2.1), la zone du coude (13, 13.1) étant limitée à son côté orienté vers le tronçon de tige (2, 2.1) par une structure de renfort (5, 5.1).
  2. Ancrage pour mur creux selon la revendication 1, caractérisé en ce que le premier tronçon d'ancrage (3, 3.1) avec le tronçon de tige (2, 2.1) comprend un angle d'au moins 80 degrés, notamment d'environ 90 degrés.
  3. Ancrage pour mur creux selon la revendication 1 ou 2, caractérisé en ce que la pliure (13, 13.1) est limitée sur son côté orienté vers le tronçon de tige (2, 2.1) par le tronçon intermédiaire (5, 5.1) faisant office de structure de renfort.
  4. Ancrage pour mur creux selon l'une des revendications 1 à 3, caractérisé en ce que le premier tronçon d'ancrage (3, 3.1) est aligné par l'un de ses deux côtés plans (10) avec la surface d'enveloppe (11) du tronçon de tige (2, 2.1).
  5. Ancrage pour mur creux selon la revendication 4, caractérisé en ce que le côté plan (10) du premier tronçon d'ancrage (3) aligné avec la surface d'enveloppe (11) du tronçon de tige (2) est le côté plan dans la direction duquel le coude est réalisé.
  6. Ancrage pour mur creux selon la revendication 4, caractérisé en ce que la direction du coude, par lequel le tronçon d'ancrage (3.1) est coudé par rapport au tronçon de tige (2.1), est celle du côté opposé au côté plan du premier tronçon d'ancrage (3.1) aligné avec la surface d'enveloppe du tronçon de tige (2.1).
  7. Ancrage pour mur creux selon l'une des revendications 1 à 6, caractérisé en ce que la pliure (13.1) est limitée sur son côté orienté vers le premier tronçon d'ancrage (3.1) par une seconde structure de renfort (18).
  8. Ancrage pour mur creux selon la revendication 7, caractérisé en ce que la seconde structure de renfort est conformée en moulure (18).
  9. Ancrage pour mur creux selon la revendication 8, caractérisé en ce que la moulure (18) présente un axe long et un axe court et que la moulure (18) est disposée avec son axe long perpendiculairement à l'étendue longitudinale du tronçon d'ancrage (3.1).
  10. Ancrage pour mur creux selon l'une des revendications 1 à 9, caractérisé en ce que le premier tronçon d'ancrage (3, 3.1) présente une largeur supérieure au diamètre du tronçon de tige (2, 2.1).
  11. Ancrage pour mur creux selon la revendication 10, caractérisé en ce que l'ancrage pour mur creux (12, 12.1) est réalisé par déformation d'une platine métallique et le premier tronçon d'ancrage (3, 3.1) est, par rapport la conformation du tronçon de tige (2, 2.1), un tronçon non déformé.
  12. Ancrage pour mur creux selon l'une des revendications 1 à 11, caractérisé en ce que l'ancrage pour mur creux (12, 12.1) est réalisé en acier inoxydable.
  13. Ancrage pour mur creux selon la revendication 12, caractérisé en ce que l'acier est un acier Cr-Ni avec ajout de Mo.
  14. Dispositif comprenant un pan de maçonnerie intérieur (16, 16.1) en cours de construction et au moins un ancrage pour mur creux (12, 12.1) selon l'une des revendications 1 à 13, caractérisé en ce qu'une couche de colle ou de mortier (14, 14.1) est appliquée sur la couche supérieure existante, en pierres (15), du pan de maçonnerie (16, 16.1) en cours de construction, sur laquelle est posé le premier tronçon d'ancrage de l'ancrage pour mur creux (12, 12.1) ou dans laquelle est enfoncée le premier tronçon d'ancrage (3, 3.1) de l'ancrage pour mur creux (12, 12.1).
EP18164356.0A 2017-03-29 2018-03-27 Ancrage pour mur creux ainsi que dispositif pourvu d'un tel ancrage Active EP3382119B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202017101820.2U DE202017101820U1 (de) 2017-03-29 2017-03-29 Luftschichtanker sowie Anordnung mit einem solchen Luftschichtanker

Publications (2)

Publication Number Publication Date
EP3382119A1 EP3382119A1 (fr) 2018-10-03
EP3382119B1 true EP3382119B1 (fr) 2020-11-11

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EP18164356.0A Active EP3382119B1 (fr) 2017-03-29 2018-03-27 Ancrage pour mur creux ainsi que dispositif pourvu d'un tel ancrage

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DE (1) DE202017101820U1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29718804U1 (de) 1997-10-22 1997-12-04 Bever Gesellschaft für Befestigungsteile - Verbindungselemente mbH, 57399 Kirchhundem Luftschichtanker
DE20000602U1 (de) * 2000-01-14 2000-05-18 Bodegraven B V Metaalfab Nieuw Maueranker und Hohlmauer mit Maueranker
EP1584763B1 (fr) * 2004-04-07 2011-06-08 BEVER Gesellschaft für Befestigungsteile- Verbindungselemente mbH Ancre avec nervures pour mur creux

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
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DE202017101820U1 (de) 2018-07-02
EP3382119A1 (fr) 2018-10-03

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