WO1999061716A1 - Procede et dispositif d'ancrage destines a fournir un point d'ancrage dans une structure en beton - Google Patents

Procede et dispositif d'ancrage destines a fournir un point d'ancrage dans une structure en beton Download PDF

Info

Publication number
WO1999061716A1
WO1999061716A1 PCT/GB1999/001626 GB9901626W WO9961716A1 WO 1999061716 A1 WO1999061716 A1 WO 1999061716A1 GB 9901626 W GB9901626 W GB 9901626W WO 9961716 A1 WO9961716 A1 WO 9961716A1
Authority
WO
WIPO (PCT)
Prior art keywords
anchor
concrete
nut
capping member
anchor device
Prior art date
Application number
PCT/GB1999/001626
Other languages
English (en)
Inventor
Brian Donohoe
Original Assignee
Brian Donohoe
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 Brian Donohoe filed Critical Brian Donohoe
Priority to AU39482/99A priority Critical patent/AU3948299A/en
Publication of WO1999061716A1 publication Critical patent/WO1999061716A1/fr

Links

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
    • E04B1/4114—Elements with sockets
    • E04B1/4121—Elements with sockets with internal threads or non-adjustable captive nuts

Definitions

  • THIS INVENTION relates to improvements in or relating to the provision of anchor points in concrete structures.
  • the invention concerns a method of providing an anchor point in a concrete structure and an anchoring device for use in the method.
  • anchor points may be used to attach items such as foiTnwork-supporting jacks and props to a concrete floor during construction of a building or to secure formwork in position during construction of a concrete wall.
  • a known method of providing an anchor point in an existing concrete floor for a jack or prop involves drilling an appropriately sized hole into the concrete floor from the surface thereof and inserting into the hole a metal anchor comprising a bolt or threaded rod which extends through an expandable sleeve and carries a conical nut.
  • the bolt or threaded rod is then tightened to draw the nut into the sleeve, thereby expanding the sleeve so that it grips the side of the hole and secures the anchor in the floor.
  • the bolt or threaded rod can then be unscrewed, leaving the expanded sleeve and nut at the bottom of the hole, so that equipment can be secured to the floor by screwing an appropriate threaded fastener into the nut of the anchor.
  • This known method of fixing equipment to a concrete floor has a number of drawbacks.
  • most concrete floors in buildings have embedded metal reinforcing elements, such as metal grids or rods and it is quite common for a drill to encounter such a reinforcing element during the drilling of a hole for the known anchor before the drill has reached the required depth.
  • the partly-drilled hole obstructed by the reinforcing element is abandoned and the drill is moved to a new location and a fresh hole is drilled.
  • several attempts are required before a hole of the required depth is successfully drilled. Consequently, working time is wasted in drilling unsatisfactoiy holes which can degrade the surface of the concrete floor and which need to be filled.
  • the retention of the anchor nut and nut in the hole in the floor relies upon achieving a satisfactory factional engagement between the surface of the expanded sleeve and the side of the hole. If the hole is too large, it may prove impossible to achieve a secure fixing.
  • the hole remains open to the ingress of the dust and small debris which is commonly encountered on a building site and which can clog the internal thread of the sleeve and make the insertion of the threaded fastener difficult.
  • a flange formed between the body and the spacer tube of the housing serves as an abutment for a metal bearing washer received on the spacer tube and held in position by a circlip.
  • the bearing washer is of greater radial extent than the body or spacer tube of the housing.
  • This known anchor is cast in the concrete of a section of a wall under construction by attaching the anchor to the fair face of the formwork before the wet concrete is poured. This is achieved by drilling a hole through the form, passing one end of a threaded rod through the hole and the spacer tube of the anchor and threading it into the nut of the anchor. A wing nut applied to the other end of the threaded rod is then tightened to draw the free end of the spacer tube into engagement with the face of the fonn and secure the anchor to the form.
  • the concrete is then poured and allowed to set, after which unscrewing of the wing nut and threaded rod pennits the formwork to be removed, leaving the anchor embedded in the wall where it can be used as an anchor point for the attachment of formwork to be used in constructing a subsequent section of the wall.
  • the bearing washer of this anchor serves to increase the bearing area in the concrete to increase the axial load-bearing capacity of the anchor.
  • the present invention provides a method of installing an anchor point in a concrete structure, including the steps of: embedding in the wet concrete of the structure an anchor device comprising an internally threaded anchor nut and a capping member having a frusto-conical head with a smaller diameter end from which projects an externally threaded shank which is received in the anchor nut: arranging a larger diameter end of the head of the capping member substantially level with the surface of the concrete; allowing the concrete to set; and then unscrewing the capping member from the anchor nut, leaving the anchor nut embedded in the concrete structure and accessible through a flared entrance passage in the concrete left by the head of the capping member.
  • the invention provides an anchor device for embedding in a concrete structure to provide an anchor point, including an internally threaded anchor nut and a capping member having a frusto-conical head with a smaller diameter end from which projects an externally threaded shank for threaded insertion in the anchor nut.
  • Figure 1 is a side view of an anchor device embodying the invention, showing an anchor nut and a capping member of the anchor device separated from one another;
  • Figure 2 is a partly sectioned side view of the anchor device of Figure 1, showing a threaded shank of the capping member inserted in the anchor nut;
  • Figure 3 is a top plan view of the anchor device of Figures 1 and 2;
  • Figure 4 schematically illustrates the anchor nut of the anchor device of Figures 1 to 3 embedded in a vertical orientation in a concrete floor;
  • Figure 5 shows the embedded anchor nut of Figure 4 with an attached threaded fastener
  • Figure 6 schematically illustrates the installation of the anchor device of Figures 1 to 3 in a horizontal orientation in a concrete wall section during construction of the wall;
  • Figure 7 is a side view of a modified form of capping member for use in an anchor device embodying the invention.
  • an anchor device 1 embodying the invention comprises an anchor nut 2 having a surface to which concrete readily adheres and a capping member 3 having a surface to which concrete does not readily adhere.
  • the anchor nut 2 comprises a substantially cylindrical metal sleeve, for example made of steel, having a proximal end 4 and a distal end 5.
  • the nut 2 is fonned on its inner surface with an internal screw thread 6 extending between the proximal and distal ends 4 and 5 of the nut.
  • Retaining means in the fonn of an anchor loop 7 is attached to the anchor nut 2 so as to extend from the distal band made from a strip or bar of metal, for example steel, which is attached to the nut 2 by any suitable means, such as by welding the ends of the strip or bar to the outer surface of the anchor nut 2 at diametrically opposed locations.
  • a plurality of anchor loops 7, which may be of different sizes, may be provided on the anchor nut so as to extend in difference planes.
  • the capping member 3 is in the form of a moulded plastics member, made for example of PVC or nylon, which comprises a cylindrical shank 8 projecting from a smaller diameter end 9 of a frusto-conical head 10 which has a larger diameter end 1 1 .
  • the shank 8 of the capping member 3 has an external screw-thread 12 for mating with the internal thread 4 of the anchor nut 2 in an assembled condition of the anchor device as shown in Figure 2.
  • a circular flange 13 projecting outwardly beyond the rest of the head 10 is fonned at the larger diameter end 1 1 of the head 10.
  • the flange 13 has an inwardly chamfered circumferential surface 14 and has a diametrically extending slot 15 formed in its end surface 16.
  • the flange 1 is also provided with fixing holes, such as the four symmetrically disposed holes 17 shown in Figure 3, to receive fixing elements, such as nails, which may be used to secure the anchor device to a support member, such as a wooden batten or a fonn, as described later.
  • fixing holes such as the four symmetrically disposed holes 17 shown in Figure 3, to receive fixing elements, such as nails, which may be used to secure the anchor device to a support member, such as a wooden batten or a fonn, as described later.
  • the capping member 3 is preferably moulded from plastics material, it is envisaged that the member 3 could be made as a plastics coated metal member.
  • the assembled device is then embedded in a vertical orientation in the wet concrete of a concrete floor 18 under construction at a required location with the end surface 16 of the flange 1 substantially level with the top surface 19 of the concrete. Ingress of concrete into the threads of the nut 2 is prevented by the shank 8 of the capping membei' 3 which fills the intemal space of the nut.
  • an off-cut of reinforcing rod 20 may be passed through the anchoring loop 7 of the anchor nut and embedded in the concrete with the anchor device 1 to enhance the fixing of the anchor nut in the concrete, although in practice the fact that the loop itself is embedded in the concrete will nonnally provide an adequately secure fixing.
  • the provision of a plurality of anchor loops 7 of different sizes enables the anchor nut 2 to be attached to reinforcing rods 20 at different depths in the concrete floor 18.
  • the anchor device 1 may be maintained in its desired position at the surface of the concrete floor by nailing the device to a wooden batten (not shown) so that the anchor device hangs down from the batten which rests on the surface of the concrete when the anchor device is embedded in the concrete.
  • a wooden batten (not shown)
  • the required number of spaced-apart anchor devices may be nailed to the wooden batten, thereby maintaining the anchor devices in their required spaced-apart locations. The batten can then simply be prised free of the embedded anchor devices once the concrete has set.
  • the surface of the capping member may be provided with a non-stick coating, such as a layer of PTFE. or a mould release agent, such as silicone grease, may be applied to the surface of the member 3 prior to embedding the anchor device 1 in the wet concrete.
  • the anchor nut 2 After removal of the capping member 3, the anchor nut 2 is left embedded in the concrete with its proximal end 4 disposed at the base of a flared access passage 21 left in the concrete when the capping member 3 is removed.
  • the capping member 3 may be left in position until access to the anchor nut 2 is actually required, so that the access passage 21 remains tightly closed and the anchor nut is protected from the ingress of detritus and the thread of the nut is kept clean until required.
  • a threaded fastener such as the illustrated combination of a threaded rod 22.
  • washer 23 and wing nut 24 can be screwed into the anchor nut 2 to secure an item of equipment, such as a jack or prop, to the concrete floor 18.
  • the threaded fastener Once the threaded fastener has served its pote, it can be disconnected from the embedded anchor nut 2 and the access passage 21 and the anchor nut 2 can be filled and the surface of the floor made good.
  • the anchor device 1 embodying the present invention has the advantages of eliminating the need to drill holes in the floor and of providing a secure anchor point which is easily and reliably installed. Moreover, there is good access to the embedded anchor nut 2 which can remain sealed until required and from which debris can be readily blown out.
  • Figure 6 illustrates the installation of the anchor device 1 in a section 25 of a concrete wall under construction.
  • the assembled anchor device prior to pouring of the concrete the assembled anchor device is secured in a horizontal orientation to a wooden fonn 26 by nailing the flange 13 to the fair face 27 of the fonn 26 in a desired location using nails 28 through the holes 17 in the flange.
  • a reinforcing rod 29 for the concrete wall may be passed through the anchor loop 7 of the anchor nut 2 of the device 1 attached to the form 26.
  • the concrete is poured and allowed to set and the fonn 26 is removed so that the capping member 10 can be unscrewed to provide access to the embedded anchor nut 2.
  • a plurality of anchor devices 1 will be embedded in the wall section at appropriate locations to provide fixing points for the attachment of fonnwork to be used in constructing a further section of the concrete wall.
  • the anchor device 1 Compared to known wall mounted anchor of the prior art, the anchor device 1 has the advantages that it is easily installed and held in position at any desired location on the fonn 26. the anchor device 1 also eliminates the need to drill holes in the form 26 and can be tied to a reinforcing rod 29 in the concrete wall 25 by means of the anchor loop 7 to provide a secure anchor point.
  • the anchor nut 2 and the shank 8 of the capping member are both 50mm long, the small diameter end 9 of the head 10 has a diameter of 25mm, the larger diameter end 1 1 of the head 10 has a diameter of 50mm and the flange 13 has a diameter of 80mm and a thickness of 5mm.
  • the axial length of the head 10 and its flange 13 is 50mm, so that the proximal end 4 of the embedded anchor nut 2 is 50mm below the surface of the concrete structure.
  • FIG. 7 illustrates a modified form of capping member 30 which may be used with the anchor nut 2 instead of the capping member 3 to fonn an anchor device embodying the present invention.
  • the capping member 30 has a frusto-conical head 31 and an externally threaded cylindrical shank 32 projecting from a smaller diameter end 33 of the head 31.
  • the capping member 30 differs from the capping member 3 in that the head 31 has a shorter axial extent than the frusto-conical head 10 of the capping member 3 and the head 31 tapers uniformly to the smaller diameter end from a larger diameter end surface 34, unlike the capping member 3 where the head 10 is formed with the flange 13.
  • the length of the shank 32 may be 50mm.
  • the axial length of the head 3 1 may be 17.5mm
  • the diameter of the smaller diameter end 33 may be 60mm
  • the diameter of the larger diameter end 34 may be 75mm.

Landscapes

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

Abstract

Point d'ancrage qui est installé dans une structure en béton par encastrement, dans le béton humide de cette structure, d'un dispositif d'ancrage (1) comportant un écrou d'ancrage (2) doté d'une surface externe à laquelle le béton adhère facilement et un capuchon (3) à tête tronconique (10) dotée d'une surface externe à laquelle le béton n'adhère pas facilement. La tête du capuchon (3) possède une extrémité à diamètre inférieur à partir de laquelle s'étend une tige filetée qui se loge dans l'écrou d'ancrage (2). Une extrémité à diamètre supérieur de la tête (10) du capuchon est placée pratiquement au même niveau que la surface du béton et le béton est laissé à sécher. Le capuchon (3) est alors dévissé de l'écrou d'ancrage (2), ledit écrou d'ancrage (2) étant alors encastré dans la structure de béton et accessible par un orifice évasé que la tête du capuchon (3) a laissé dans le béton après avoir été enlevée.
PCT/GB1999/001626 1998-05-28 1999-05-24 Procede et dispositif d'ancrage destines a fournir un point d'ancrage dans une structure en beton WO1999061716A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU39482/99A AU3948299A (en) 1998-05-28 1999-05-24 Method and anchoring device for providing an anchor point in a concrete structure

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9811501.7A GB9811501D0 (en) 1998-05-28 1998-05-28 Method and anchoring device for providing an anchor point in a concrete structure
GB9811501.7 1998-05-28

Publications (1)

Publication Number Publication Date
WO1999061716A1 true WO1999061716A1 (fr) 1999-12-02

Family

ID=10832871

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1999/001626 WO1999061716A1 (fr) 1998-05-28 1999-05-24 Procede et dispositif d'ancrage destines a fournir un point d'ancrage dans une structure en beton

Country Status (3)

Country Link
AU (1) AU3948299A (fr)
GB (1) GB9811501D0 (fr)
WO (1) WO1999061716A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001083178A1 (fr) * 2000-04-27 2001-11-08 David Janeway Dispositif de fixation dote d'une surface de fixation reglable encastree dans un panneau coule ou d'autres produits
KR20040006435A (ko) * 2002-07-12 2004-01-24 주식회사 대도세라믹 건축용 앵글의 고정설치구조
DE102011006702A1 (de) * 2011-04-04 2012-10-04 Peri Gmbh Montagestopfen zum Montieren einer Ankerhülse an einer Schalung
EP2388381A3 (fr) * 2010-05-18 2012-12-26 HILTI Aktiengesellschaft Rail de montage
EP2638216A2 (fr) * 2010-11-12 2013-09-18 Wembley Innovation Ltd Structures de panneaux de maçonnerie renforcés
CN103953121A (zh) * 2014-05-14 2014-07-30 中建七局第二建筑有限公司 一种墙体拉结筋预埋套筒及其定位方法
DE202014100188U1 (de) * 2014-01-17 2015-04-20 Philipp Gmbh Transportanker, Betonfertigteil mit zumindest einem Transportanker, sowie Verwendung eines Transportankers zur Herstellung eines solchen Betonfertigteils
CN112313053A (zh) * 2018-06-22 2021-02-02 瑞斯泽巴迪泰灵公司 用于在混凝土中形成空隙的装置和方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE555347A (fr) *
US1463863A (en) * 1920-04-27 1923-08-07 Raymond P Zents Concrete insert
US3798866A (en) * 1971-12-30 1974-03-26 Itt Hanger insert for steel floor deck and the like
DE2355799A1 (de) * 1973-11-08 1975-05-28 Schroeder Fa Friedr Befestigungsscheibe fuer rohrstuecke
DE2553451A1 (de) * 1975-11-28 1977-06-08 Huebner Handel Huewa Anschluss system, vorzueglich fuer betonbauteile
GB2133103A (en) * 1982-11-30 1984-07-18 Francis Cunningham Threaded socket for embedding in concrete
GB2216562A (en) * 1988-03-09 1989-10-11 John Stratton Crosby Reinforcement spacer
WO1995013436A1 (fr) * 1993-11-12 1995-05-18 Oike Co., Ltd. Dispositif encastre dans du beton

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE555347A (fr) *
US1463863A (en) * 1920-04-27 1923-08-07 Raymond P Zents Concrete insert
US3798866A (en) * 1971-12-30 1974-03-26 Itt Hanger insert for steel floor deck and the like
DE2355799A1 (de) * 1973-11-08 1975-05-28 Schroeder Fa Friedr Befestigungsscheibe fuer rohrstuecke
DE2553451A1 (de) * 1975-11-28 1977-06-08 Huebner Handel Huewa Anschluss system, vorzueglich fuer betonbauteile
GB2133103A (en) * 1982-11-30 1984-07-18 Francis Cunningham Threaded socket for embedding in concrete
GB2216562A (en) * 1988-03-09 1989-10-11 John Stratton Crosby Reinforcement spacer
WO1995013436A1 (fr) * 1993-11-12 1995-05-18 Oike Co., Ltd. Dispositif encastre dans du beton

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001083178A1 (fr) * 2000-04-27 2001-11-08 David Janeway Dispositif de fixation dote d'une surface de fixation reglable encastree dans un panneau coule ou d'autres produits
KR20040006435A (ko) * 2002-07-12 2004-01-24 주식회사 대도세라믹 건축용 앵글의 고정설치구조
EP2388381A3 (fr) * 2010-05-18 2012-12-26 HILTI Aktiengesellschaft Rail de montage
EP2638216A2 (fr) * 2010-11-12 2013-09-18 Wembley Innovation Ltd Structures de panneaux de maçonnerie renforcés
DE102011006702A1 (de) * 2011-04-04 2012-10-04 Peri Gmbh Montagestopfen zum Montieren einer Ankerhülse an einer Schalung
DE202014100188U1 (de) * 2014-01-17 2015-04-20 Philipp Gmbh Transportanker, Betonfertigteil mit zumindest einem Transportanker, sowie Verwendung eines Transportankers zur Herstellung eines solchen Betonfertigteils
CN103953121A (zh) * 2014-05-14 2014-07-30 中建七局第二建筑有限公司 一种墙体拉结筋预埋套筒及其定位方法
CN112313053A (zh) * 2018-06-22 2021-02-02 瑞斯泽巴迪泰灵公司 用于在混凝土中形成空隙的装置和方法

Also Published As

Publication number Publication date
AU3948299A (en) 1999-12-13
GB9811501D0 (en) 1998-07-29

Similar Documents

Publication Publication Date Title
US6367205B2 (en) Anchor for a structural tie-down apparatus
EP0765977B1 (fr) Ancre à être encastré variablement et procédé
US20130031857A1 (en) Anchor system for securing a concrete wall panel to a supporting concrete foundation
EP0613529A1 (fr) Ancrage.
MXPA02008979A (es) Ancla roscada para pisos de metal-concreto colado y pisos con bastidor de madera.
US5355642A (en) Prefabricated post with dual mounting members
US20210381188A1 (en) Ground Anchor
US7124550B1 (en) Anchoring framework to a masonry wall
US4250681A (en) Removable and reusable anchor and method
WO1999061716A1 (fr) Procede et dispositif d'ancrage destines a fournir un point d'ancrage dans une structure en beton
US9803355B1 (en) Masonry veneer tie
US5226770A (en) Pipe hanger nut assembly
US4118910A (en) Anchorable tubular device
JP5132009B1 (ja) 斜面安定化工法に用いられる定着用ナット及びそれを使用した斜面安定化構造並びに斜面安定化工法
US20140252292A1 (en) Balcony blockout insert
JP2006016952A (ja) アンカーとその仮固定方法及びそれを用いた仮固定構造
US6454181B1 (en) Subway rail anchor assembly
US20060137285A1 (en) Fastener devices
KR20200001968U (ko) 건물공사용 임시 안전난간대
CN221052664U (zh) 一种预应力锚索挡墙组合挡墙结构
KR200375370Y1 (ko) 건축용 앵커
KR19980010326U (ko) 건축용 앵글의 고정설치구조
KR200183468Y1 (ko) 건축용 앵글의 고정설치구조
JPH01203566A (ja) スラブ開口部に於ける手摺取付用アンカーおよびその先付け工法
KR200487599Y1 (ko) 건물외장재 설치용 앵커기구

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG US UZ VN YU ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW SD SL SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: KR

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase