EP0351668B1 - Goujon pour façades - Google Patents

Goujon pour façades Download PDF

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Publication number
EP0351668B1
EP0351668B1 EP89112452A EP89112452A EP0351668B1 EP 0351668 B1 EP0351668 B1 EP 0351668B1 EP 89112452 A EP89112452 A EP 89112452A EP 89112452 A EP89112452 A EP 89112452A EP 0351668 B1 EP0351668 B1 EP 0351668B1
Authority
EP
European Patent Office
Prior art keywords
facade
wall
tie
mortar
lamellae
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.)
Expired - Lifetime
Application number
EP89112452A
Other languages
German (de)
English (en)
Other versions
EP0351668A1 (fr
Inventor
Daniel Mächtle
Joachim Mayer
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.)
Maechtle GmbH
Original Assignee
Maechtle GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25870114&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0351668(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from DE3840055A external-priority patent/DE3840055C2/de
Application filed by Maechtle GmbH filed Critical Maechtle GmbH
Priority to AT89112452T priority Critical patent/ATE81538T1/de
Publication of EP0351668A1 publication Critical patent/EP0351668A1/fr
Application granted granted Critical
Publication of EP0351668B1 publication Critical patent/EP0351668B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E04G23/0222—Replacing or adding wall ties

Definitions

  • the invention relates to a facade dowel in the form of an elongated connecting element for installation in mutually aligned bores of a supporting wall and a facade arranged in front of it at a distance from a ventilation gap, the connecting element emitting an axial channel extending from its rear end for mortar injection with a plurality of radial openings adjoining it in the facade area contains in the annular space formed with the borehole wall, the ends of which are closed in the area of the facade by lamellae which can be fixed on the connecting element, and the axial channel also contains an outlet opening for the injected mortar mass in the supporting wall area.
  • facade dowel of the type mentioned has the shape of a bolt-shaped connecting element for bridging the ventilation gap between the facade and the supporting wall.
  • the axial channel extending through the connecting element is closed at the preceding end and is provided with radial channels extending from it both in the facade area and in the supporting wall area, which open out at the periphery of the connecting element into outlet openings for the injected mortar mass.
  • the bolt-shaped connecting element is made of solid material with a narrow axial channel, it is not able to adapt to the relative movements between the facade and the supporting wall that occur during weather and temperature changes. This has the consequence that the connecting elements loosen relatively quickly and / or breaks occur in the facade.
  • the known connecting element can only be used in conjunction with a low-viscosity synthetic resin, because a mortar applied with cement and sand cannot escape sufficiently from the narrow channels and openings and cannot fill the annular space between the connecting element and the wall hole.
  • the invention has for its object to improve and further develop a facade anchor of the type specified in such a way that it can advantageously replace the so-called air-layer anchors described above by having a small diameter the wall holes, for example corresponding to a normal mortar joint width, nevertheless a complete mortar filling also ensures that the wall hole furthest away from the injection point and, moreover, also ensures their permanent bond in the event of relative movements between the facade and the supporting wall.
  • the thin-walled, corrosion-resistant dowel tube is sufficient due to the high tensile and bending strength of its material and due to its mortar bond with the wall holes, all forces that may occur between the supporting wall and the facing shell or facade due to settlement or expansion. Since the required tensile and bending strength is guaranteed even with a small wall thickness of the dowel tube, there is a sufficient cross-section inside as a flow channel available for the mortar to be injected, even if the outer diameter of the dowel tube is reduced to such an extent that it can be inserted into wall bores that do not exceed the dimensions of a conventional mortar joint and outside the dowel tube there is still a sufficient distance for the mortar bond between Dowel tube and borehole wall remain.
  • the beads or notches attached at longitudinal intervals prevent an uncontrolled kinking of the dowel tube and give it a certain flexibility at these points, which may be desirable in the area of the ventilation gap with regard to possible expansion movements between the supporting wall and the facing shell.
  • the small wall thickness and the resulting large cross-section of the injection channel lead to the advantage that the dowel tube can be accommodated in a hole within a conventional wall joint during renovation work and undesirable additional facade holes can be largely avoided.
  • the plastic bushings, which bear the resilient lamella seals ensure that the dowel tube is held centrally within the wall bores at least until the mortar has set, so that a secure bond with the borehole wall is created over the entire circumference of the dowel tube.
  • the preferably diametrically opposite pairs of openings provided in the facade area of the dowel can be dimensioned such that the mortar injected through the dowel tube initially flows through the unimpeded pipe cross-section to the open end due to the lower resistance and fills the borehole from there, while the pressure continues to build up the mortar gradually emerges from the circumferential openings and fills the annular space in the facade area which is closed off by the lamellar bushings.
  • the beads or notches of the dowel tube are arranged in pairs in the same radial plane and in an axial sequence offset by 90 ° to each other.
  • the beads or notches in the dowel tube can preferably be provided in the area of the ventilation gap.
  • the outer circumference of the dowel tube is expediently roughened and / or provided with grooves similar to a thread in order to improve the mortar bond between the dowel tube and the borehole wall.
  • the plastic bushings each consist of a jacket surrounding the dowel tube with a plurality of ring-shaped or helical lamellas facing the borehole wall, and that at least one radially directed knob is formed on the inside of the jacket, which is formed in an opening of the dowel tube can be pressed in to fix the socket.
  • the plastic bushings can contain a longitudinal slot which also extends through the molded knobs. Due to the elasticity of the plastic material forming the bushes, these automatically attach themselves to the circumference of the dowel tube. Since the longitudinal slot also extends through the knobs, this gets a certain flexibility, with which it can be easily pressed into the assigned opening in the dowel tube and then widened again.
  • the lamellae of the plastic bushings can expediently contain a V-shaped recess at least on the side opposite the longitudinal slot, which facilitate the opening of the bushing and are effective for venting the wall bores during the mortar injection.
  • the lengths of the plastic bushings or the lamellar spacing can be dimensioned such that they cover wall areas which have broken out around the entrance or exit of the wall bores and lie against the undamaged borehole wall with at least two lamellas.
  • a stocking made of plastic fabric can be pulled over the preceding end of the dowel tube and is clamped to the dowel tube in the area of the lamella group that closes the supporting wall bore.
  • a ventilation or insulating gap 26 which is usually used for rear ventilation of the facade and can optionally be filled with insulating material.
  • a bore 16 extends through the facade 12 and is aligned with a bore section 14 in the underground wall 10.
  • the hole corresponds approximately to the thickness of a normal mortar joint of 12 to 15 mm, although other dimensions are also possible. For larger dimensions, if the mortar joint or areas next to it have to be drilled out, the broken-out wall areas 18 and 20 shown in FIG. 1 can arise at the entrance and exit of the facade bore.
  • the dowel tube 22 carries a total of three lamella bushes 24 made of resilient material or plastic, which serve as a concentric end plug for the mortar mass to be filled.
  • Each lamella bushing 24 consists of a jacket 32 which bears against the outside of the dowel tube and from which annular lamellae 34 point in the radial direction.
  • the lamellae 34 which can optionally also be helically formed on the casing, are supported on the wall of the boreholes 14 and 16 and are then effective as a seal against the mortar mass injected through the dowel tube.
  • an inwardly directed extension or knobs 36 is formed on the inside of the lamella bushing, which has a circular circumference, for example, in the enlarged illustration according to FIG. 3.
  • a positioning opening 38 is assigned to each knob in the dowel tube, into which the knob 36 is pressed and thereby the lamellae is positioned in the axial direction. The position of these openings 38 in the dowel tube can be adapted to the conditions given by the respective wall.
  • a lamellar bushing 24 closes off the annular space around the dowel tube at the entrance of the borehole 14 into the underground wall.
  • the next following lamella bush 24 is located on the back of the facade wall 12, i. H. on the inside of the ventilation gap 26, where it closes off the annular space around the dowel inside the facade wall, which on the other hand is closed at the front by the lamella bushing arranged at the borehole entrance to the facade wall.
  • the length of the lamellar bushes 24 is dimensioned such that wall areas which have broken out around the entrance and exit are also taken into account and in any case two lamellas lie sealingly against the undamaged borehole wall.
  • the dowel tube 22 is open at both ends. 1, the dowel tube 22 can be made flexible at various points, preferably in the area of the ventilation gap by transverse beads or notches 40, which are preferably arranged in pairs on opposite sides and are also offset in pairs by 90 ° to one another. In order to achieve a particularly effective bond between the facade wall, mortar mass and dowel, the circumference of the dowel tube 22 can be roughened or grooved as a whole or only in the facade area.
  • the lamella bushing 24 is provided with a longitudinal slot 42.
  • a V-shaped recess 46 in each of the lamellae 34 on the side opposite the longitudinal slot in order to facilitate the opening of the lamellae bushing.
  • Additional V-shaped recesses 44 may be provided to facilitate air leakage from the borehole when the backfill is injected
  • a drill hole 16 is made in the mortar joint between two stones of a facade wall 12 in need of renovation and a blind hole 14 in the underlying substrate by means of a hammer drill.
  • an injection tube preferably made of plastic parts, is then put together and inserted into the aligned boreholes.
  • the injection tube comprises a plastic tube 54 for bridging the ventilation gap 26 and a rear plastic sleeve 62, which are inserted into one another and inserted into the borehole until they are one defined dimension are pressed into the facade bore 16.
  • the plastic pipe 54 has at the preceding end 56 outer sealing lamellae 58 which prevent the mortar from escaping from the wall bore 14.
  • the plastic pipe is extended beyond the penetration depth of the sealing lamellae, so that, similarly to the steel pipe described above, a molded network can be clamped on using a plastic ring, with which the function is also ensured with hollow bricks, perforated or honeycomb bricks.
  • the total length of the plastic tube 54 depends on the ventilation gap 26 and extends beyond the length of the ventilation gap by a certain amount into the borehole 14 in the underground wall or into the borehole 16 of the facade wall.
  • the rear end 60 of the plastic tube 54 is inserted into a receptacle 68 surrounded by outer sealing lamella 64 at the preceding end of the plastic sleeve 62 inserted into the facade bore.
  • the sealing lamellas 64 delimit the cavity filled with mortar and delimited to the outside by the borehole wall in the facade wall in the direction of the ventilation gap 26.
  • the plastic sleeve 62 At the rear end of the plastic sleeve 62 near the entrance of the borehole 16 there are sealing lamellas 66 on the outer circumference and in the area between In the preceding slats 64 and the rear slats 66, the plastic sleeve 62 contains a plurality of longitudinal slots 70 through which the mortar exits into the outer annular space at the latest after the borehole 14 in the underground wall has been completely filled and an increased pressure has built up.
  • the plastic tube 54 is preferably press-fitted into the receptacle 68 of the plastic sleeve 62 and locked there by a stop shoulder.
  • the plastic sleeve 62 can contain a total of four longitudinal slots 70.
  • the material bond between the mortar and the supporting substructure creates a material composite that is essential for anchoring. When using a molding net, this is stretched through the penetrating mortar, so that a force-locking connection is created by forming the borehole.
  • the annular space between the wire anchor and the inner wall of the plastic tube is preferably small.

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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)
  • Building Environments (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Road Signs Or Road Markings (AREA)

Claims (9)

  1. Cheville de façade sous la forme d'un organe de liaison allongé (22) destiné à être monté dans des trous de foration (14, 16), alignés l'un avec l'autre, d'un mur porteur (10) et d'une façade (12), disposée en avant de ce dernier, à une distance correspondant à un intervalle d'aération (26), étant entendu que l'organe de liaison (22) comporte un canal axial, partant de son extrémité arrière, pour l'injection de mortier, avec, dans la zone de la façade, plusieurs ouvertures radiales qui lui sont raccordées et servant de sorties pour le mortier vers l'espace annulaire formé avec la paroi du trou de foration, et que les extrémités de cet espace annulaire sont fermées, dans la zone de la façade, par des lamelles (34) pouvant se fixer sur l'organe de liaison (22), et étant entendu que le canal axial comporte également, dans la zone du mur porteur, un orifice de sortie pour la masse de mortier injecté, caractérisé par les caractéristiques suivantes:
    - l'organe de liaison est un tube d'ancrage (22) à parois fines, constitué d'un acier résistant à la corrosion, dont l'extrémité située à l'avant (23) forme l'ouverture de sortie débouchant dans la zone du mur porteur;
    - le tube d'ancrage (22) est, à plusieurs endroits de sa longueur, rendu plus rigide, pour s'opposer à des pliages incontrôlés, au moyen de couples de sertissages ou de nervures (40) disposées parallèlement à sa périphérie, en particulier disposées diamétralement les unes en face des autres, et il présente, en même temps, de façon limitée, une certaines élasticité en ce qui concerne des mouvements relatifs de la façade (12) et du mur porteur (10);
    - pour le centrage, des douilles de matière plastique (24) sont disposées, portant des joints d'étanchéité à lamelles souples (34), pouvant être fixées sur le tube d'ancrage (22) dans la zone d'entrée et de sortie (18, 20) des trous de foration (14, 16) dans les murs.
  2. Cheville de façade suivant la revendication 1, caractérisé en ce que les sertissages ou nervures (40) du tube d'ancrage (22) sont disposés par couple dans le même plan radial et en se suivant dans le sens axial avec un décalage les uns par rapport aux autres de 90°.
  3. Cheville de façade suivant la revendication 1 ou la revendication 2, caractérisé en ce que les sertissages ou nervures (40) dans le tube d'ancrage (22) sont, de préférence, prévus dans la zone de l'intervalle d'aération (26).
  4. Cheville de façade suivant l'une quelconque des revendications précédentes, caractérisé en ce que le contour extérieur du tube d'ancrage (22) est rendu rugueux et/ou est muni de nervures, d'une façon analogue à un filetage.
  5. Cheville de façade suivant l'une quelconque des revendications précédentes, caractérisé en ce que les douilles en matière plastique (24) sont chacune constituées d'un manchon (32) entourant le tube d'ancrage (22) et comportant plusieurs lamelles (34), de forme circulaire ou hélicoïdale dirigées vers la paroi du trou, et en ce que, sur la face intérieure du manchon (32), est formé au moins un ergot (36) dirigé radialement, que l'on peut enfoncer dans une ouverture (38) du tube d'ancrage (22) pour fixer la douille (24).
  6. Cheville de façade suivant l'une quelconque des revendications précédentes, caractérisé en ce que les douilles de matière plastique (24) comportent une fente longitudinale (42), qui s'étend également au travers des ergots formés (36).
  7. Cheville de façade suivant la revendication 6, caractérisé en ce que les lamelles (34) des douilles de matière plastique (24) comportent au moins, sur le côté opposé à la fente longitudinale (42), un évidement (46) en forme de V, facilitant l'engagement de la douille et servant à purger l'air des trous de foration (14, 16) pendant l'injection du mortier.
  8. Cheville de façade suivant l'une quelconque des revendications précédentes, caractérisé en ce que la longueur des douilles de matière plastique (24), ou les distances des lamelles, sont dimensionnées de telle façon qu'elles couvrent des zones d'arrachement dans le mur autour de l'entrée et de la sortie des trous de foration et qu'elles soient au contact, par au moins deux lamelles (34) avec la paroi intacte du trou.
  9. Cheville de façade suivant l'une quelconque des revendications précédentes, caractérisé en ce que, sur l'extrémité à l'avancement du tube de cheville d'ancrage (22), est tiré un manchon constitué d'étoffe en matière plastique, qui est coincé sur le tube d'ancrage (22), dans la zone du groupe de lamelles fermant le trou de forage (14) dans le mur porteur.
EP89112452A 1988-07-15 1989-07-07 Goujon pour façades Expired - Lifetime EP0351668B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89112452T ATE81538T1 (de) 1988-07-15 1989-07-07 Fassadenduebel.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3824001 1988-07-15
DE3824001 1988-07-15
DE3840055 1988-11-28
DE3840055A DE3840055C2 (de) 1988-07-15 1988-11-28 Fassadendübel

Publications (2)

Publication Number Publication Date
EP0351668A1 EP0351668A1 (fr) 1990-01-24
EP0351668B1 true EP0351668B1 (fr) 1992-10-14

Family

ID=25870114

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89112452A Expired - Lifetime EP0351668B1 (fr) 1988-07-15 1989-07-07 Goujon pour façades

Country Status (3)

Country Link
US (1) US4938631A (fr)
EP (1) EP0351668B1 (fr)
ES (1) ES2035457T3 (fr)

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US7404274B2 (en) * 2003-11-12 2008-07-29 Hayes John T Masonry wall anchoring system
US20070134063A1 (en) * 2005-12-14 2007-06-14 Shaw And Sons, Inc. Dowel device with closed end speed cover
SE532203C2 (sv) * 2006-12-22 2009-11-10 Dynamic Rock Support As En deformerbar bergbult
US20110038675A1 (en) * 2008-10-02 2011-02-17 Nippon Steel Corporation Steel pipe for reinforcing ground, method of reinforcing ground using the same, and method of reinforcing structure
JP5085809B2 (ja) * 2011-02-22 2012-11-28 新日本製鐵株式会社 窪み付き鋼管及び複合杭
DE102011017606A1 (de) 2011-04-27 2012-10-31 Hilti Aktiengesellschaft Ankervorrichtung zum Befestigen einer Platte an einer tragenden Grundstruktur
US20150197898A1 (en) 2014-01-15 2015-07-16 Shaw & Sons, Inc. Concrete dowel system
US9340969B1 (en) 2014-11-13 2016-05-17 Shaw & Sons, Inc. Crush zone dowel tube
ES2827019T3 (es) 2015-05-08 2021-05-19 Normet International Ltd Perno de roca hueco autorroscante anclado localmente
US20170096810A1 (en) 2015-10-05 2017-04-06 Shaw & Sons, Inc. Concrete dowel placement system and method of making the same
US20190024367A1 (en) 2015-10-05 2019-01-24 Shaw & Sons, Inc. Concrete dowel placement system and method of making the same
CL2016000682A1 (es) * 2015-12-10 2016-09-30 Ncm Innovations Pty Ltd Anclaje de roca de soporte de malla
DE102019106180A1 (de) 2018-04-13 2019-10-17 Johann Moissl Verfahren zur befestigung eines dübels in einem bohrloch
US11578491B2 (en) 2020-02-07 2023-02-14 Shaw Craftsmen Concrete, Llc Topping slab installation methodology

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Also Published As

Publication number Publication date
ES2035457T3 (es) 1993-04-16
US4938631A (en) 1990-07-03
EP0351668A1 (fr) 1990-01-24

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