EP0937833A1 - Ancrage pour maçonnerie - Google Patents

Ancrage pour maçonnerie Download PDF

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Publication number
EP0937833A1
EP0937833A1 EP98810138A EP98810138A EP0937833A1 EP 0937833 A1 EP0937833 A1 EP 0937833A1 EP 98810138 A EP98810138 A EP 98810138A EP 98810138 A EP98810138 A EP 98810138A EP 0937833 A1 EP0937833 A1 EP 0937833A1
Authority
EP
European Patent Office
Prior art keywords
wall anchor
anchor according
shaft
masonry
anchor
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Withdrawn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
EP98810138A
Other languages
German (de)
English (en)
Inventor
Immanuel Straub
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.)
Keller AG Ziegeleien
Original Assignee
Keller AG Ziegeleien
Straub Federnfabrik 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 Keller AG Ziegeleien, Straub Federnfabrik AG filed Critical Keller AG Ziegeleien
Priority to EP98810138A priority Critical patent/EP0937833A1/fr
Publication of EP0937833A1 publication Critical patent/EP0937833A1/fr
Withdrawn legal-status Critical Current

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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
    • 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 present invention relates to a wall anchor for cross-connection of the shells a multi-shell structure consisting of at least two shells, wherein at least one of the shells is made of masonry, with a central shaft area for absorbing tensile and compressive forces and two end areas for anchoring or Fastening in or on the shells, the one for anchoring in the masonry provided one end portion at least one at an angle from the shaft protruding arm or leg.
  • the outer masonry shell is also the varying outside temperature exposed. Due to changes in temperature, it expands in relation to the inner shell different and contracts.
  • the anchor points of the Masonry anchors, which connect the outer with the inner shell, are thereby transverse to its axis in both directions - horizontal and / or vertical - relative shifted to each other.
  • Wall anchors with one or two arms protruding at right angles from the shaft for quite some time to connect the shells of a multi-shell masonry used (see Fig. 1).
  • the advantage of these anchors is that they are inexpensive can be produced.
  • the disadvantage, however, is that this is a large Do not withstand tensile stress. As soon as the arms close under tensile stress start to deform or the mortar tears out, the pull-out resistance drops together.
  • GB-A-2 242 918 describes a wall anchor made of wire a bridge section and two anchor loops adjoining the bridge section known.
  • the loops are formed by bending the wire ends and around the central bridge area, which connects the two loops.
  • the wire ends overlap each other.
  • An advantage of this anchor is that the loops are difficult because of the overlapping wire ends deformed. This means that the wall anchor is only against the resistance of the can be pulled out of the masonry in front of this lying mortar.
  • EP-A-0 688 912 discloses a flat steel wall anchor, at the ends of each two transverse arms protruding from the shaft at right angles and lying in the same plane are formed.
  • the central zone of the wall anchor is twisted in itself, probably around to cause dripping of condensation water condensing on the anchor.
  • the free ends of the cross arms as barbs trained that better anchor the wall anchor in the masonry should.
  • a grub screw is provided which is flanged, welded or glued is connected to the wall anchor.
  • the object of the present invention is to provide an improved masonry anchor create which can absorb large pressure and especially tensile forces.
  • a Another goal is to provide an anchor that is both horizontal and can also accommodate vertical displacements of the attachment points.
  • the anchor is supposed to be inexpensive to manufacture. He should also with different fasteners cooperate resp. can be used in different ways.
  • the task with a masonry anchor according to the preamble of claim 1 solved in that the arm or leg with the shaft area of the anchor forms an acute angle.
  • the advantage of this is that the the arm formed anchoring in tensile stress in the mortar and therefore opposes a greater pull-out resistance than, for example, a Wall anchor with only one arm protruding at right angles. Is the angle between the armature axis and the arm namely an acute angle, so the arm must first can move radially outwards, before turning to a right one and then can be deformed to an obtuse angle.
  • Wall anchors in which an arm protruding from the sheep at a right angle is relative slightly deformed to an obtuse angle and subsequently pulled out of the anchor can be the pull-out resistance in the wall anchor according to the invention significantly higher.
  • the one for anchoring in Masonry provided end area at least two in opposite directions protruding arms or thighs.
  • This has the advantage that when there is tensile stress the pressure forces exerted by the surrounding masonry evenly from both Work on the arms or thighs from the sides.
  • the ends of the arms are advantageous or rounded or U-shaped. This will make the Pull-out resistance even greater since the end areas of the arms are in the masonry can support better.
  • the end area provided for anchoring in the masonry is approximately formed as a loop, the legs of which with the shaft area include an acute angle.
  • Such a wall anchor is inexpensive to manufacture.
  • the loop can absorb the pressure forces that arise, since it only difficult to compress across the anchor axis.
  • the anchor consists of wire, preferably with a substantially circular cross section.
  • the wire gauge advantageously varies between 2 mm and 4 mm and is preferably about 3 mm.
  • the shaft area consist of at least two twisted wires. Twisting the wires prevents any condensation from forming along the shaft from the can migrate from the outer to the inner shell. The one made up of two twisted wires But the shaft area also has the advantage that it is elastic transversely to the anchor axis and therefore, relative displacements between the outer axis occurring transversely to the anchor axis and can absorb the inner masonry shell well.
  • the other end region of the armature advantageously has a connecting device for Fastener on.
  • a wall anchor can be used, for example, for connection of masonry can be used on a concrete wall.
  • Connection device as one to the axis of the shaft area essentially vertical eyelet formed.
  • a screw preferably inserted with internal means for the rotary drive.
  • the eyelet standing perpendicular to the anchor axis has the advantage that it is at Can support pressure directly on the masonry.
  • the other end of the wall anchor can also be formed in a serpentine shape or as a helix, which directly in one Hole can be mortared or glued.
  • the center of the eyelet is advantageous arranged essentially in the longitudinal axis of the shaft region. Because the train and Pressure forces thus acting in the anchor axis, bending stresses of the Shank area largely prevented.
  • both ends of the anchor be open or closed loops are trained. Such mortared loops can be deformed only with great difficulty become.
  • a wall anchor with open or closed loops at both ends can be used to connect two masonry.
  • the anchor is particularly advantageously made from a piece of wire.
  • the wire is there expediently made of high-strength, stainless steel wire. Basically can however, the anchor can also be made from sheet steel.
  • An armature can be produced in such a way that a piece of wire of a certain one Length is first folded in half and that the wires are then in the middle twisted together and at least one end region is formed so that the Include wire ends with the shaft area at an acute angle.
  • a Wall anchors can be manufactured particularly inexpensively. Expediently the wire ends rounded, U-shaped or designed as a loop. The other The end area of the anchor can be used as a loop, eyelet or as a twist be formed.
  • FIG. 1 shows one of a first shell 1 and one parallel to it, spaced from it, second shell 2 existing multi-layer masonry.
  • the first shell 1 consists of, for example relatively coarse, the second shell 2 made of finer masonry.
  • First and second bowl 1,2 are connected to each other by wall anchors 3,6,8.
  • wall anchors 3,6,8 In Fig. 1 there are three examples different embodiments of known wall anchors, namely a rod anchor 3, a spiral anchor 6 and a bow anchor 8, drawn.
  • the anchoring part of the rod anchor 3 is through a right angle from the connecting part or shaft 4 protruding arm 5 is formed.
  • This arm 5 is when pulling up the two shells 1, 2 embedded in a mortar joint of the second shell 2.
  • the arm 5 opposite end of the shaft 4 can be anchored in any way, or be formed on the first shell 1.
  • the rod anchor 3 shown is different Provide the end of the shaft 4 with a screw thread.
  • the one consisting of a sheet metal strip twisted around its longitudinal axis
  • the spiral anchor 6 differs from the rod anchor 3 in that it is attached to its Anchoring in the mortar joint of the second shell 2 provided end two spread apart, forming an elongated angle leg 7.
  • anchoring elements 3, 6 and 8 is the angle between the as a shaft 4 trained middle part and the arms bent at one end thereof, or Legs always greater than or equal to 90 °, i.e. is the intermediate angle rectangular or obtuse. This has the consequence that the pull-out value in the longitudinal direction the shaft is relatively small.
  • the wall anchor according to the invention shown in FIG. 2, designated overall by 10, consists of an elongated shaft 11 at the ends of which arms 12, 13 are angled such that they enclose an acute angle ⁇ (alpha) with the shaft 11.
  • the wall anchor 10 is made from a steel wire with a round cross section.
  • the wall anchor shown in FIG. 3, designated overall by 20, essentially consists of a sheet metal strip, the central part of which is designed as a shaft 21 twisted about its longitudinal axis. At least one end of the armature is split into two legs 22, 23 which are angled so that they form an acute angle ⁇ (beta ⁇ 90 °) with the shaft 21.
  • FIGS. 4 to 7 show a wall anchor designated overall by 30, which has a shaft 31 consisting of two wires twisted together.
  • the region of the wires adjoining one end of the shaft 31 is U-shaped, the one leg 32, 33 connected to the shaft forming an acute angle ⁇ (gamma) with the shaft 31.
  • the end of the shaft 31 opposite the legs 32, 33 is designed as an eyelet 34 for receiving a fastening element 35.
  • the fastening element 35 can be, for example, a nail which can be driven directly into the shell of the building or a screw which can be screwed into any dowel or directly into a hole in the building.
  • the angle between the legs 32, 33 and the longitudinal axis of the anchor tends to increase because of the elasticity of the wire.
  • the resulting spreading effect acts essentially perpendicular to the anchor axis and, in conjunction with the unyielding mortar that surrounds the anchor loop, ensures a significantly increased pull-out value (see arrows 36 in FIG. 7).
  • the free ends of the bent legs 32, 33 can also be connected to form an endless loop.
  • FIG. 8 shows a further embodiment of a device according to the invention, with a total of 40 designated wall anchor.
  • the wall anchor 40 has one of two twisted in itself Wiring existing shaft 41.
  • At one end of the shaft 41 is an endless one Loop 42 formed.
  • the legs 43, 44 connected to the shaft 41 of the Loop 42 forms an acute angle with the longitudinal axis of shaft 41.
  • At The U-shaped arches of the loop 42 thus become tensile stress on the shaft pushed apart and additionally spread in the mortar joint.
  • Anchoring end 45 formed end of the shaft 41 is the twisting of the wires expiring.
  • An anchoring end 45 designed in this way can, for example, by means of from a glue cartridge or a dosing device, curable Multi-component mass can be anchored in a borehole.
  • FIG. 9 shows a further embodiment of a wall anchor designated overall by 50 for connecting two masonry shells of a building evident.
  • the wall anchor 50 has one of two twisted wires existing shaft 51.
  • the two ends of the shaft 51 are also bent Arms 52, 53 or connected to legs 54, 55.
  • the arms 52, 53 or the legs 54, 55 form an acute angle with the shaft 51 and thus result in one high extraction value of the wall anchor.
  • the other ends of the arms 52, 53 and the Legs 54, 55 are U-shaped.
  • the arms 52, 53 form an open one Legs 54, 55 a self-contained loop.
  • the whole wall anchor 50 is made preferably from a single piece of wire.
  • the masonry anchors are used as follows: Be inner and outer Masonry shell pulled up at the same time, then the masonry anchors inserted into the mortar joints on both sides. Conversely, a masonry shell is first pulled up, one end of the anchor can already be in joints of the first Masonry shell are embedded. This procedure is proven in practice but mostly as little practical. It is therefore usually a masonry shell created in advance.
  • the masonry anchors for connecting the masonry are then by means of a screw and dowel or adhesive mortar in or on the existing Masonry shell or concrete wall attached. Between the inner and outer Masonry shells can be provided with an insulation layer or an air gap.

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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)
EP98810138A 1998-02-19 1998-02-19 Ancrage pour maçonnerie Withdrawn EP0937833A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP98810138A EP0937833A1 (fr) 1998-02-19 1998-02-19 Ancrage pour maçonnerie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98810138A EP0937833A1 (fr) 1998-02-19 1998-02-19 Ancrage pour maçonnerie

Publications (1)

Publication Number Publication Date
EP0937833A1 true EP0937833A1 (fr) 1999-08-25

Family

ID=8235953

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98810138A Withdrawn EP0937833A1 (fr) 1998-02-19 1998-02-19 Ancrage pour maçonnerie

Country Status (1)

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EP (1) EP0937833A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2257893A1 (es) * 2003-04-08 2006-08-01 Josep Maria Adell Argiles Anclaje multiuso para muros armados o sin armar.
ITMO20110093A1 (it) * 2011-04-29 2012-10-30 Techlever Engineering S R L Elemento di ancoraggio per pareti e metodo di realizzazione

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3277626A (en) * 1963-10-17 1966-10-11 Dur O Wal National Inc Double shank adjustable wall tie
DE3731423A1 (de) * 1987-08-27 1989-03-09 Hans Michel Verbindungsanker fuer zweischalen-mauerwerk
GB2215356A (en) * 1988-03-01 1989-09-20 George Clark Wall ties
GB2242918A (en) * 1990-03-29 1991-10-16 Ronald Charles Sammons Masonry ties
EP0688912A1 (fr) * 1994-06-17 1995-12-27 AKUSO Finanz- und Verlags-Anstalt Patte de scellemont assurant la liaison entre deux éléments de construction et méthode pour sa fabrication

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3277626A (en) * 1963-10-17 1966-10-11 Dur O Wal National Inc Double shank adjustable wall tie
DE3731423A1 (de) * 1987-08-27 1989-03-09 Hans Michel Verbindungsanker fuer zweischalen-mauerwerk
GB2215356A (en) * 1988-03-01 1989-09-20 George Clark Wall ties
GB2242918A (en) * 1990-03-29 1991-10-16 Ronald Charles Sammons Masonry ties
EP0688912A1 (fr) * 1994-06-17 1995-12-27 AKUSO Finanz- und Verlags-Anstalt Patte de scellemont assurant la liaison entre deux éléments de construction et méthode pour sa fabrication

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2257893A1 (es) * 2003-04-08 2006-08-01 Josep Maria Adell Argiles Anclaje multiuso para muros armados o sin armar.
ITMO20110093A1 (it) * 2011-04-29 2012-10-30 Techlever Engineering S R L Elemento di ancoraggio per pareti e metodo di realizzazione

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