EP1896670A1 - Connecteurs de renforcement en beton - Google Patents

Connecteurs de renforcement en beton

Info

Publication number
EP1896670A1
EP1896670A1 EP06704996A EP06704996A EP1896670A1 EP 1896670 A1 EP1896670 A1 EP 1896670A1 EP 06704996 A EP06704996 A EP 06704996A EP 06704996 A EP06704996 A EP 06704996A EP 1896670 A1 EP1896670 A1 EP 1896670A1
Authority
EP
European Patent Office
Prior art keywords
cavity
reinforcing
connector according
reinforcement
members
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Withdrawn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
EP06704996A
Other languages
German (de)
English (en)
Inventor
Ernest Comerford
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.)
Adjusta Pty Ltd
Original Assignee
Adjusta Pty Ltd
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
Priority claimed from AU2005901188A external-priority patent/AU2005901188A0/en
Application filed by Adjusta Pty Ltd filed Critical Adjusta Pty Ltd
Publication of EP1896670A1 publication Critical patent/EP1896670A1/fr
Withdrawn legal-status Critical Current

Links

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
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14—Conveying or assembling building elements
    • E04G21/16—Tools or apparatus
    • E04G21/18—Adjusting tools; Templates
    • E04G21/1841—Means for positioning building parts or elements
    • E04G21/185—Means for positioning building parts or elements for anchoring elements or elements to be incorporated in the structure
    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/162—Connectors or means for connecting parts for reinforcements
    • E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
    • E04C5/165—Coaxial connection by means of sleeves

Definitions

  • This invention relates to connectors for concrete reinforcement.
  • a floor reinforcing bar is provided with a connector secured to one end, the connector having a head including a channel which enables the head to hook over the staple of wall reinforcing projecting into the void.
  • the floor reinforcing bar is in tensile connection with the wall reinforcing as required to maintain optimum strength of the reinforced concrete in the region of the wall/floor junction.
  • this arrangement requires special treatment of the wall reinforcing and is not amenable to general application to reinforcement connection.
  • the present invention resides broadly in a connector for reinforcement and including a pair of members, at least one of which is adapted to be secured in tensile relation to the end of a reinforcing bar, the members having complementary coupling portions selected to interengage by relative movement transverse the direction of said tensile relation and resist removal from each other by relative movement in the direction of said tensile relation.
  • the connector may further include retaining means for retaining the coupling portions in the coupling position.
  • the retaining means suitably is movable between a position where separation of the coupling portions is possible to a retaining position where the coupling portions are retained in the coupled position.
  • the retaining means may comprise a movable sleeve that fits over a portion of both members when in the retaining position.
  • the movable sleeve may be slidable or movable by rotation over a thread. Where slidable, the retaining means may be frictionally engaged to hold in a selected position.
  • Other retaining means may also be used in the present invention.
  • the respective coupling portions may be configured as complementary hooks.
  • the hooks may each include a transverse, undercut receiving channel bounded by an outer Np, whereby interengagement with a like channel is lip to lip.
  • the hook is suitably configured such that when the hook of a like-shaped coupling portion is brought into a coupling position, the receiving channel of one hook receives the lip or outer rim of the other hook and the lip or outer rim of the one hook is received in the receiving channel of the other hook.
  • the hook may be configured such that the side wall(s) of the bodies of the first and second members are in general alignment when in the engaged position. This provides a tidy appearance and facilitates placement of the retaining means in the retaining position.
  • a rear side of the hook forms an extension of a side wall or walls of the body whereby the side wall(s) of the bodies of the first and second members are in general alignment when in the coupled position.
  • the complementary coupling portions may be interengaged by one of the members further including a cavity for receiving a part of the other member, the cavity extending from an end of the first member into the first member and being shaped such that the part of the second member is placed in the cavity by transverse movement of the first member relative to the part of the second member and the part of the second member resists removal from the cavity by relative longitudinal movement between the first member and the second member.
  • the second of the pair of members may also be arranged to receive an end of a length of reinforcement. In this fashion, the connector can be used to connect together two pieces of reinforcement.
  • Each member may include a cavity for receiving and retaining the end of a length of reinforcement.
  • the cavity may include an internal thread so that it can be thread ably connected to a thread, ribs or like formations on the outer surface of the reinforcement.
  • the end of the reinforcement may be tightly received in the cavity such that the end of the reinforcement is retained in the cavity by a friction fit.
  • the cavity may be arranged as described for the cavity in our co-pending international patent publication WO03/062552, the entire contents of which are herein incorporated herein by reference.
  • the member includes a cavity for receiving an end of a length of reinforcement.
  • the body is formed from a plurality of parts which may be secured to or held relative to one another and which collectively form the cavity mentioned above.
  • Reinforcement often has ribs or formations on its outer surface and the interior face of the cavity may be provided by the body have complementary formations for receiving the formations on the length of reinforcement. This assists in attaching the length of reinforcement relative to the body.
  • the body may be formed from two parts or halves which may be secured to one another to capture an end of the reinforcement between them. An inner end of the cavity may be enlarged relative to the remainder of the cavity in the body.
  • the void former may include reinforcing tie bars that may be tied off to the wall reinforcing or may have apertures adapted to receive wall reinforcing bent well into the plane of the future floor or other intersecting structure.
  • the tie bars or reinforcing are bent along the void forming channel to permit positioning of the open face of the channel against the wall forming formwork.
  • the void forming channel will usually be sealed at both ends and may be capped across the open face to seal the void forming channel against the formwork. In this way concrete is prohibited from entering the channel when the wall is formed.
  • the formwork is removed to expose the void and the reinforcing bent along it.
  • the formwork for the floor is established in position, the reinforcing is bent back out into the plane of the floor and the floor reinforcing is tied off to it.
  • the bending out of the reinforcement delays the reinforcing of the floor or other intersecting structure since this cannot be placed until the steel reinforcement within the void has been manually deployed.
  • This manual deployment of the reinforcement within the void may cause the reinforcing bar to assume an 'S' shape that cannot be manually straightened and in practice is not straitened.
  • This 'S' shape means that the tied off reinforcement is not disposed as a tensile member in the region of the floor edge, reducing the strength of the steel reinforced concrete.
  • the manual deformation of the reinforcement within the void may lead to serious lower back strain and long term repetitive strain injury.
  • WO03/062552 by the present applicant has proposed eliminating the bending of reinforcing into and out of the void by configuring the reinforcing in the void as continuous loops in the void space presenting as staples on the bottom of the void.
  • a floor reinforcing bar is provided with a connector secured to one end, the connector having a head including a channel which enables the head to hook over the staple of wall reinforcing projecting into the void.
  • the floor reinforcing bar is in tensile connection with the wall reinforcing as required to maintain optimum strength of the reinforced concrete in the region of the wall/floor junction.
  • this arrangement requires special treatment of the wall reinforcing to provide the necessary staple portions in the void. As such it means that commercial products such as REBOX having starter bars that extend through the floor of the void forming channel cannot be used.
  • the complementary coupling portions may be interengaged as described above including by one of the members further including a cavity for receiving a part of the other member, the cavity extending from an end of the first member into the first member and being shaped such that the part of the second member is placed in the cavity by transverse movement of the first member relative to the part of the second member and the part of the second member resists removal from the cavity by relative longitudinal movement between the first member and the second member.
  • the cavity may extend from an opening in the end of the first member and a portion of the second member extends into or through the opening in the end of the first member when the first and second members are connected to each other.
  • the second member may be adapted to be secured to a structure by being embedded in the structure.
  • One or more of the members adapted to be secured to a structure may be mounted by their respective coupling portions in a void forming body attached to formwork before casting of a first part of a structure whereby, after curing of the first part, removal of the void forming body leaves said coupling portions exposed.
  • the cavity in the first member may be suitably shaped such that it includes an opening in the end of the first member and an opening in a side of the first member. Most suitably, the opening in the side of the first member may be contiguous with the opening in the end of the first member.
  • the cavity may also extend inwardly from the end of the first member such that an inner part of the cavity is larger than the opening in the end of the first member.
  • the cavity may receive a complementarily-shaped part of the second member by relative transverse movement between the first and the second members but removal of the second member from the cavity by relative longitudinal movement is resisted by virtue of the opening of the cavity in the end of the first member being smaller than the part of the second member that fits into the enlarged part of the cavity.
  • the first member comprises a body for receiving and retaining an end of the length of reinforcement, preferably with the cavity for receiving the part of the second member being positioned towards an opposite end of the body.
  • the cavity includes an inner part having an enlarged diameter relative to the size of the opening in the end of the body, wherein the end wall of the body surrounding the opening and the enlarged diameter portion of the cavity define a shoulder.
  • the second member includes a shank portion of a diameter that fits into the opening in the end of the body, and the second member further includes an end portion of larger diameter that fits into the enlarged diameter portion of the cavity.
  • the second member is adapted to be fixed in or to a wall.
  • the second member is adapted to be fixed in a wall by placing the second member into a wall cavity defined by form work, pouring concrete into the wall cavity defined by the formwork and allowing the concrete to set.
  • the second member may be provided with an enlarged end, or it may be provided with an open ring or other apertures that enable the concrete to mechanically key with the second member.
  • the second member may also be provided with suitable protrusions or projections in order to make it more difficult to remove the second member from the concrete wall structure.
  • the first structure is itself preferably a reinforced concrete structure.
  • the other member may be formed up with or secured to the reinforcing of the first concrete structure.
  • Figure 1 is an isometric view of a connector in accordance with an embodiment of the present invention.
  • the connector is shown in an unconnected position;
  • Figure 4 is an isometric view of the connector shown in Figure 1 , but in the connected position;
  • Figure 5 is an elevation of Figure 4;
  • Figure 6 is a cross-sectional view taken along line A-A of Figure 5;
  • Figure 8 is an elevation of another embodiment of the connector in accordance with the present invention.
  • Figure 9 is an end elevation of a connector in accordance with the present invention.
  • Figure 11 is a side elevation of the connector of Figures 9 and 10;
  • Figure 12 is a front elevation of the connector of Figure 11 ;
  • opening 26 extends from the end 28 of body 16 into an opening 38 in the sidewall of body 16.
  • cavity 24 is partly defined by opening 26 in the end 28 of body 16 and opening 38 in the sidewall of the body 16.
  • the second member 14 comprises a body 40.
  • body 40 One end of body 40 is formed with an enlarged portion 42 that is formed with or connected to a shank portion 44 having a diameter that is smaller than the diameter of enlarged portion 42.
  • Shoulder 46 is defined between the enlarged portion 42 and the shank portion 44.
  • a further enlarged portion 48 is provided on body 40 to assist in locating the second member 14 relative to the first member 12 when it is desired to connect the two members together.
  • the body 40 has a second end that is provided with an enlarged tapered portion 50. Enlarged tapered portion 50 is provided to increase the pullout resistance of body 40 when body 40 is embedded in concrete.
  • second member 14 is placed in a desired position in concrete form work and concrete poured into the 15 form work. It is desirable that the second member 14 is embedded in the concrete such that an underside 52 of enlarged portion 48 is located at an outer surface of the concrete, with enlarged tapered portion 50 being fully embedded in the concrete. Most suitably, the second member 14 is positioned in the formwork such that the enlarged portion 42 and shank portion 44 extends out of the concrete but in a rebate formed in the concrete. This is especially useful when the connector 10 of the present invention is used to connect the reinforcement of a floor section to a cast wall section.
  • FIG. 7 An example of a suitable rebate forming piece is shown in Figure 7.
  • the apparatus of Figure 7 comprises a body 60 made from a suitable material, such as a foam material or wood.
  • the body 60 includes a plurality of holes 62, 64, 66, etc. which are sized to receive the enlarged portion 42 and shank 44 of second member 14.
  • the body 60 forms a rebate in the concrete after the concrete has been poured into the form work and that the embedded second members 14 have shank portion 44 and enlarged portion 42 extending out of the concrete in the rebate area.
  • Figure 8 shows an alternative embodiment of the second member 14 shown in Figures 1 to 6. The embodiment shown in Figure 8 is particularly useful for connecting one length of reinforcement to another length of reinforcement.
  • the second member shown in Figure 8 comprises a body 70 having a similar enlarged portion 42, shank portion 44 and further enlarged portion 48 as the second member 14 shown in Figures 1 to 6.
  • the body 70 shown in Figure 8 differs from the second member 14 shown in Figures 1 to 6 by virtue of it including a cavity 72 having an opening 74 at one end of the body 70.
  • Cavity 72 is adapted to receive and securely retain an end of a reinforcing bar 76.
  • cavity 72 may be similar to cavity 18 as shown in Figures 1 to 6.
  • one end 78 of body 70 is essentially identical in structure to the corresponding end of second member 14 shown in Figures 1 to 6. Therefore, separate reinforcement can be easily and quickly connected together.
  • the cavities for receiving the end of the reinforcement may be formed from two or more parts that can be joined together, as described in our corresponding international patent publication WO03/062552.
  • the first member and second member may be made integrally by casting or by machining, or they may be made from separate pieces connected together.
  • a connector 110 in accordance with an embodiment of the present invention includes a body 112.
  • Body 112 is suitably made from a metal material, such as mild steel.
  • body 112 includes a cavity 114 for receiving and securely retaining an end of a reinforcing bar.
  • Cavity 114 includes a tapered upper end 116 which facilitates insertion of a reinforcing bar into the cavity 114 and an internal thread 118 for threadably receiving an external thread or ribs formed on the reinforcing bar.
  • the body 112 also includes a coupling portion 120.
  • Coupling portion 120 is formed as a hook and is used to engage with a like shaped coupling portion on another connector.
  • the coupling portion 120 includes a generally U-shaped receiving channel 122 that extends across the body in a transverse direction (see Figure 12).
  • Receiving channel 122 has an outer rim 124 configured such that a shoulder 126 is defined between the bottom of receiving channel 122 and outer rim 124.
  • the rear side 128 of the hook portion of coupling portion 120 is provided as a continuation of the sidewall of body 112.
  • FIG. 13 a first reinforcing bar 130 is joined to a first connector 132.
  • a second reinforcing bar 134 is securely connected to a second connector 136.
  • Connectors 132 and 136 are identical to the connector 110 shown in Figures 9 to 12.
  • connector 132 shown in Figure 13 also has a slidable retaining sleeve 138 fitted over the outer surface thereof.
  • the slidable retaining sleeve 138 is provided with a retained spring portion 139 adapted to frictionally engage the body of connector 132 in order to hold the retaining sleeve in a selected position on the connector 132.
  • the retaining sleeve 138 is still positioned in a position that allows the first and second connectors to be separated from each other.
  • the coupling portions are coupled with each other but can still be separated from each other, if desired.
  • the first and second connectors as shown in the position of Figure 15, can be removed from each other by relative transverse movement of the first and second connectors (either by moving one of the connectors upwardly relative to the other, or by moving one of the connectors sideways relative to the other).
  • the connectors resist separation by longitudinal movement due to interaction between the respective receiving channels and outer rims of the receiving channels.
  • the slidable retaining sleeve 138 is moved from the position shown in Figure 15 to the position shown in Figure 16. In the position shown in Figure 16, the slidable retaining sleeve extends over part of the body of first connector 132, over part of the body of second connector 136 and over the hook portions of both first connector 132 and second connector 136.
  • the connector of the present invention allows for simple and rapid connection of lengths of reinforcement. It is not necessary to undertake a laborious tying process to connect adjacent pieces of reinforcement. Moreover, connection of the reinforcement involves using essentially two identical connectors.
  • the connector of the present invention may be susceptible to other variations.
  • the retaining means need not be a slidable sleeve. Any other retaining means will also fall within the scope of the present invention.
  • the attached Figures 13 to 16 show the use of two connectors but with only a single retaining sleeve being used. For ease of manufacture and use, it may be desirable to provide each connector with a slidable sleeve or other retaining means so that each connector selected by an operator from a supply of connectors will have a retaining means.
  • the present invention may be susceptible to variations and modifications other than those specifically described. It is to be understood that the present invention encompasses all such variations and modifications that fall within the spirit and scope of the invention defined in the claims appended hereto.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Reinforcement Elements For Buildings (AREA)

Abstract

L’invention concerne des connecteurs de renforcement (10) comprenant un premier (12) élément (16) possédant une cavité pour la réception et la rétention d’une barre de renforcement (20) par un engagement de filetage. L’autre bout du corps (16) est doté d’une seconde cavité (24) qui s’étend à partir d’une ouverture (26) située en bout (28) et se prolongeant par la région de cavité (30) et s’ouvrant sur une partie élargie (32). Un deuxième élément (14) comprend un corps (40) formé d’une partie élargie (42) et d’une partie de tige (44). Le corps (40) possède une partie élargie conique (50) destinée à augmenter sa résistance à la traction. Dans des applications, l’élément (14) est placé à une position voulue de fourchette avec le dos (52) de la partie plus élargie (48) située à la partie extérieure du béton. Le premier élément (12) est ensuite déplacé transversalement par rapport à un deuxième élément 14) jusqu’à ce que la partie élargie (42) soit reçue par la cavité (24).
EP06704996A 2005-03-11 2006-03-10 Connecteurs de renforcement en beton Withdrawn EP1896670A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AU2005901188A AU2005901188A0 (en) 2005-03-11 Connector for Reinforcement
AU2005901189A AU2005901189A0 (en) 2005-03-11 Reinforcement Connector
PCT/AU2006/000323 WO2006094362A1 (fr) 2005-03-11 2006-03-10 Connecteurs de renforcement en beton

Publications (1)

Publication Number Publication Date
EP1896670A1 true EP1896670A1 (fr) 2008-03-12

Family

ID=36952885

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06704996A Withdrawn EP1896670A1 (fr) 2005-03-11 2006-03-10 Connecteurs de renforcement en beton

Country Status (2)

Country Link
EP (1) EP1896670A1 (fr)
WO (1) WO2006094362A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BRPI0916129A2 (pt) 2008-11-06 2018-05-15 Monkey Bar Couplers Pty Ltd "reforço"
HUE025855T2 (en) * 2011-03-16 2016-04-28 Areva Gmbh Wall module for building a structure
CN103835441A (zh) * 2014-01-23 2014-06-04 王睿敏 预制钢筋混凝土构件用钢筋机械连接件及其安装方法
CN103790236A (zh) * 2014-02-17 2014-05-14 王睿敏 用于钢筋混凝土构件连接的连接件、制作方法及施工方法
CN103821230A (zh) * 2014-02-27 2014-05-28 王睿敏 钢筋混凝土结构连接构件、制作方法及施工方法
CN103866921B (zh) * 2014-03-26 2016-07-13 王睿敏 预制钢筋混凝土构件之间的钢筋连接件、制作方法及施工方法
CN103967220A (zh) * 2014-05-21 2014-08-06 王睿敏 预制钢筋混凝土构件之间的钢筋连接调整构件、制作方法及施工方法
CN104674946A (zh) * 2014-12-31 2015-06-03 王睿敏 混凝土预制件连接调整构件及应用
USD846973S1 (en) 2015-09-17 2019-04-30 Columbia Insurance Company High-strength partition top anchor
US10407892B2 (en) 2015-09-17 2019-09-10 Columbia Insurance Company High-strength partition top anchor and anchoring system utilizing the same
CN114718239B (zh) * 2021-07-19 2023-06-13 中铁建工集团有限公司 一种组合体系楼盖及其施工方法

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DE2216302A1 (de) * 1972-04-05 1973-10-18 Zueblin Ag Verbindungselement fuer bewehrungsstaebe von betonfertigbauteilen
FR2478707A1 (fr) * 1980-03-24 1981-09-25 Interventions Chantiers Ste Te Piece de raccordement, notamment pour armatures de beton arme
DE29721146U1 (de) * 1997-11-28 1999-04-01 Boegl Max Bauunternehmung Gmbh Verbindungsstück
AU2003903079A0 (en) * 2003-06-19 2003-07-03 Daniel Charles Underwood A bar connector assembly

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Also Published As

Publication number Publication date
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