WO2007084300A1 - Epissure pour barre de renforcement dotee de colliers filetes - Google Patents

Epissure pour barre de renforcement dotee de colliers filetes Download PDF

Info

Publication number
WO2007084300A1
WO2007084300A1 PCT/US2007/000615 US2007000615W WO2007084300A1 WO 2007084300 A1 WO2007084300 A1 WO 2007084300A1 US 2007000615 W US2007000615 W US 2007000615W WO 2007084300 A1 WO2007084300 A1 WO 2007084300A1
Authority
WO
WIPO (PCT)
Prior art keywords
sleeve
splice
collars
tapered
reinforcing bar
Prior art date
Application number
PCT/US2007/000615
Other languages
English (en)
Inventor
Paul B. Allen
Louis J. Colarusso
Dieter Russwurm
Ward M. Judson
Original Assignee
Erico International Corporation
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 Erico International Corporation filed Critical Erico International Corporation
Publication of WO2007084300A1 publication Critical patent/WO2007084300A1/fr

Links

Classifications

    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/57—Distinct end coupler
    • Y10T403/5746—Continuous thread

Definitions

  • This invention relates generally to reinforcing bar splices.
  • Another type of reinforcing bar splice that is widely employed is a threaded splice connection.
  • a sleeve with internal threads is threaded into a bar with external threads.
  • One such system which is widely employed and frequently specified is a taper thread system such as that made and sold by ERICO Inc. of Solon, Ohio under the trademark LENTON ® .
  • splice is a grout splice system, such as that shown in Yee, U.S. Patent Nos. 3,540,763 and 4,672,212. These patents use a sleeve with internal deformations and a volume stable grout to form a locking element within the sleeve locking on the internal deformations of the bar, much like the metal of the earlier Leuthy patents.
  • a reinforcing bar splice includes: an internally threaded sleeve, and a pair of internally threaded collars that engage externally threaded ends of the sleeve.
  • the collars have openings that are configured for receiving reinforcing bar ends, and securing the bar ends therewithin using an epoxy or grout.
  • a reinforcing bar splice includes an internally threaded section for threadedly engaging tapered thread ends of reinforcing bars, and wider sections at distal ends of the splice, for engaging the reinforcing bars with a grout or epoxy.
  • the wider sections may have ramped or sloped surfaces for improving the holding of the grout or epoxy.
  • an internally tapered threaded reinforcing bar splice has a central relief therein. The central relief relieves thread stress concentrations, which may help retard fatigue crack initiation.
  • a reinforcing bar splice engages each of a pair of reinforcing bar ends with both tapered threads and an epoxy or grout.
  • a tapered thread reinforcing bar splice achieves improved fatigue performance by transferring some of the load from a tapered thread portion of the splice to an epoxy- or grout-filled portion of the splice.
  • a reinforcing bar splice includes: a sleeve having sleeve internal tapered threads at opposite sleeve ends; and a pair of collars mechanically coupled to the ends, and extending axially beyond the sleeve ends.
  • a method of coupling reinforcing bar ends includes the steps of: securing in external tapered thread portions of the reinforcing bar ends in opposite internal tapered thread ends of a sleeve; and placing filler material between the reinforcing bar ends and collars that are mechanically coupled to the sleeve.
  • the filler material may include a grout and/or an epoxy.
  • FIG. 1 is an oblique view of a reinforcing bar splice of the present invention, coupling together reinforcing bar ends;
  • Fig. 2 is an exploded view of the splice of the present invention
  • Fig. 3 is an exploded, sectional side view of the splice of Fig. 1
  • Fig. 4 is a sectional side view of the splice of Fig. 1.
  • a reinforcing bar splice secures together reinforcing bar ends by utilizing, at both ends, both tapered-thread coupling and coupling involving a filler, such as a grout or an epoxy.
  • the splice may include a central tapered-thread central sleeve or coupler, and a pair of collars that are screwed onto externally-threaded ends of the central sleeve.
  • the central sleeve has a channel therethrough with tapered internal threads at both ends, and a center internal relief.
  • the internal relief is an increased radius center portion that ensures full thread contact between the tapered internal threads and external threaded sections of the rebar ends.
  • the sleeve has externally-threaded ends that are engaged by internally-threaded ends of a pair of collars. Distal to their internally-threaded ends, the collars have filler-material- receiving channels.
  • the channels include plural sloped surfaces for aiding in securing filler material between the collars and the rebar ends. The sloped surfaces also transfer some of the load from the rebar ends to the collars, thus reducing the amount of load on the tapered coupling between the bar ends and the central sleeve.
  • the filler material may be an epoxy or grout, or may alternatively be another suitable material, such as a reactive metal-producing material.
  • Figs. 1-4 show a reinforcing bar splice or coupling 10 joining together a pair of reinforcing bar ends 12 and 14.
  • the splice 10 includes a central sleeve 16, and a pair of collars 18 and 20 that are physically coupled to ends of the central sleeve 16.
  • the reinforcing bar ends 12 and 14 are coupled to the sleeve 16 by an engagement of tapered threads, and are coupled to the collars 18 and 20 by a suitable filler material, such as epoxy or grout.
  • the sleeve 16 includes a central through-hole 24.
  • the ends 26 and 28 of the sleeve 16 are internally threaded along the hole 24 at tapered thread portions 30 and 31 of the hole 24, with respective tapered threads 32 and 34.
  • the tapered threads 32 and 34 are configured to engage corresponding externally-threaded tapered portions 36 and 38 of the rebar ends 12 and 14.
  • the rebar ends 12 and 14 are coupled to the central sleeve 16 by rotating the ends 12 and 14, and/or the sleeve 16, to threadedly engage the rebar end threaded portions 36 and 38 with the tapered threads 32 and 34 of the sleeve.
  • the sleeve 16 has a center internal relief 40 in a center portion of the hole 24.
  • the internal relief 40 is an increased radius center portion that ensures full thread contact between the tapered internal threads 32 and 34 and the external threaded sections or portions 36 and 38 of the rebar ends 12 and 14.
  • the internal relief 40 ensures that the rebar ends 12 and 14 can be inserted in the sleeve through-hole 24 past the last engaged thread of the internally-threaded portions 32 and 34.
  • the internal relief 40 also relieves thread stress concentrations, and thus may help eliminate or retard fatigue crack initiation.
  • the sleeve 16 has external threads 42 and 44 at the sleeve ends 26 and 28.
  • the external threads 42 and 44 engage respective first (proximal) ends 48 and 50 of the collars 18 and 20.
  • the collar first ends 48 and 50 have internal threads 52 and 54 configured to engage the sleeve external threads 42 and 44, to couple the collars 18 and 20 to the sleeve ends 26 and 28.
  • the collars 18 and 20 are coupled to the sleeve ends 26 and 28 by suitable aligning and rotating the collars 18 and 20 and/or the sleeve 16 to threadedly engage them.
  • the collars 18 and 20 have respective through-holes 52 and 54 for allowing the rebar ends 12 and 14 to pass therethrough for threaded coupling to the central sleeve 16.
  • the through-holes 52 and 54 are internally threaded to engage the sleeve ends 26 and 28.
  • the through-holes 52 and 54 have respective filler-material-receiving channels 62 and 64.
  • the channels 62 and 64 have a diameter that is greater than that of the rebar ends 12 and 14.
  • the diameter of the channels 62 and 64 is also greater than a maximum diameter of the sleeve through-hole 24 at the internal threads 32 and 34 (at the mouths of the through-hole 24).
  • the channels 62 and 64 are sized to allow entry of filler material 66 after the rebar ends 12 and 14 have been inserted through the collars 18 and 20, and threadedly engaged with the central sleeve 16.
  • spaces 68 and 70 within the collars 18 and 20, around the rebar ends 12 and 14 may be filled with the filler material 66, to aid in securing the rebar ends 12 and 14.
  • the channels 62 and 64 each include plural sloped surfaces for aiding in securing filler material between the collars and the rebar ends.
  • each of the channels 62 and 64 has four sloped surfaces, although it will be appreciated that a greater or lesser number of sloped surfaces may be employed.
  • the channel 62 has sloped surfaces 71, 72, 73, and 74, and the channel 64 has sloped surfaces 75, 76, 77, and 78.
  • the sloped surfaces 71-78 are angled so that they are directed radially inward, such that they are closer to the rebar ends 12 and 14 where they are closer to the distal collar ends 58 and 60, away from the sleeve 16.
  • the sloped surfaces 71-78 transfer some of the load from the rebar ends 12 and 14 to the collars 18 and 20, thus reducing the amount of load on the tapered thread coupling between the bar ends 12 and 14, and the central sleeve 16. Because of the sloped surfaces 71-78, tensile stresses on the rebar ends 12 and 14, are in part converted into compression stresses in the filler material 66. These compression stresses in the filler material 66 are converted, via the sloped surfaces 71-78, into hoop stresses in the collars 18 and 20. Since filler materials such as grout or epoxy are stronger in compression than in tension, it will be appreciated that it is advantageous to transform tension stresses in the rebar end 12 and 14, into compression stresses in the filler material 66. Further, the collars 18 and 20, being made of metal, resist hoop stresses very well, and therefore it is advantageous to dissipate compression stresses in the filler material 66 as hoop stresses in the collars 18 and 20.
  • the sleeve 16 and the collars 18 and 20 may be made of a suitable material, such as steel.
  • the filler material for the collars 18 and 20 may be an epoxy or grout, or may alternatively be another suitable material, such as a reactive metal- producing material, such as used in ERICO systems sold under the trademark CADWELD ® .
  • the collars 18 and 20 are first threadedly engaged on the external threads 42 and 44 of the sleeve ends 26 and 28. Then the rebarends 12 and 14 are threadedly engaged with the internal tapered threads 32 and 34. (The two proceeding steps may be reversed in order, if desired.) Finally the spaces 68 and 70 are filled with the filler material 66. A grout or epoxy filler material is allowed to cure, to complete the splice 10.
  • the splice 10 advantageously disperses or spreads stress out over a larger area of the rebar ends 12 and 14. Since some of the stress on the rebar ends 12 and 14 is transferred to the collars 18 and 20, rather than the central sleeve 16, the splice 10 is better able to withstand stress, and may have better fatigue performance.
  • the splice 10 has better performance than conventional tapered thread splices with regard to two fatigue failure modes.
  • One mode where conventional tapered thread splices fail is due to failure of the rebar at the middle of the tapered thread sleeve.
  • the presence of the internal relief 40 at the middle of the sleeve 16 helps prevent this type of failure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)

Abstract

La présente invention concerne une épissure de barre de renforcement qui fixe ensemble les extrémités de la barre de renforcement en utilisant, aux deux extrémités, à la fois un couplage à filetage conique et un couplage faisant intervenir un matériau de remplissage, tels un coulis ou un époxyde. L’épissure peut comprendre un manchon ou un coupleur central à filetage conique central et une paire de colliers vissée sur les extrémités à filetage extérieur du manchon central. Le manchon central possède un canal qui le traverse doté de filets internes coniques aux deux extrémités et un relief interne central. Le relief interne central correspond à une partie centrale dont le rayon est augmenté et qui assure un contact intégral de filet entre les filets internes coniques et les sections filetées externes des extrémités des barres de renforcement. Le manchon possède des extrémités à filetage extérieur qui sont engagées par les extrémités à filetage intérieur d’une paire de colliers. Les colliers possèdent des canaux de réception de matériau de remplissage disposés de manière distale par rapport à leurs extrémités à filetage intérieur. Les canaux comprennent une pluralité de surfaces inclinées qui permettent de fixer le matériau de remplissage.
PCT/US2007/000615 2006-01-13 2007-01-10 Epissure pour barre de renforcement dotee de colliers filetes WO2007084300A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US75868706P 2006-01-13 2006-01-13
US60/758,687 2006-01-13

Publications (1)

Publication Number Publication Date
WO2007084300A1 true WO2007084300A1 (fr) 2007-07-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/000615 WO2007084300A1 (fr) 2006-01-13 2007-01-10 Epissure pour barre de renforcement dotee de colliers filetes

Country Status (2)

Country Link
US (1) US20070175167A1 (fr)
WO (1) WO2007084300A1 (fr)

Cited By (12)

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Publication number Priority date Publication date Assignee Title
CN102322059A (zh) * 2011-06-21 2012-01-18 天津市瑞固建材有限公司 一种预应力管桩接筋连接卡丝
CN104929319A (zh) * 2015-06-23 2015-09-23 山东明达建筑科技有限公司 一种钢筋连接用灌浆套筒
CN105220835A (zh) * 2015-10-27 2016-01-06 周桂香 一种高强钢筋机械连接的锥楔式套管接头及其实施方法
US20170081853A1 (en) * 2014-05-21 2017-03-23 Yong-keun Kim Rebar connector having a pair of locking pieces and connection method for prefabricated rebar net using same
CN107419853A (zh) * 2017-07-24 2017-12-01 浙江诚骏建设工程有限公司 一种带有中间限位的钢筋直螺纹连接套筒
CN108316563A (zh) * 2018-04-08 2018-07-24 李藏柱 套筒外螺母卡接式连接装置及其连接结构及其安装方法
CN110258966A (zh) * 2019-07-18 2019-09-20 西南科技大学 一种抗拔纤维增强复材筋连接套筒
CN110725480A (zh) * 2019-10-29 2020-01-24 中建七局安装工程有限公司 一种钢筋对接方法及钢筋对接组件
WO2020082261A1 (fr) * 2018-10-24 2020-04-30 毛岩青 Connecteur de barre d'armature intelligent
CN112144760A (zh) * 2020-08-20 2020-12-29 中建二局第一建筑工程有限公司 一种钢筋续接结构
CN113216522A (zh) * 2021-05-17 2021-08-06 吉林建筑大学设计研究院有限责任公司 一种钢筋连接套筒及钢筋连接方法
CN114592605A (zh) * 2022-03-08 2022-06-07 上海应用技术大学 利用frp-灌浆套筒连接的长跨混凝土梁及加工方法

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CA2750232C (fr) * 2008-01-16 2012-10-02 Jason M. Weaver Appareil et procedes de couplage de fers
WO2012099570A1 (fr) * 2011-01-17 2012-07-26 Empire Technology Development Llc Barre de renfort filetée tordue
US20130200582A1 (en) * 2012-02-05 2013-08-08 William Kurt Feick Wheelbarrow Or Cart With Handles Which Can Be Extended In Step Less Increments
US20140010590A1 (en) * 2012-07-03 2014-01-09 Erico International Corporation Thermal treated reinforcing bar splice and method
WO2014190054A1 (fr) * 2013-05-23 2014-11-27 Espinosa Thomas M Mur de bâtiment renforcé
CN103498536B (zh) * 2013-09-26 2016-01-13 青岛森林金属制品有限公司 挤压锥套锁紧式钢筋接头
DK2924190T3 (en) * 2013-12-20 2018-05-22 Xinmin Wang CONIC CABLE CONNECTOR AND OF THE BLOCKING TYPE FOR CONNECTING REINFORCEMENTS AND ASSEMBLY TOOLS
US10634473B2 (en) 2014-01-29 2020-04-28 Raytheon Company Internally coupleable joint
BR112017004719A2 (pt) * 2014-09-10 2017-12-05 Gripple Ltd montagem de reforço.
US9796572B2 (en) * 2014-09-20 2017-10-24 CSE Holding Company, Inc. Adjustable support fittings for a jimmy bar and other elongated structures
TWM500127U (zh) * 2014-12-19 2015-05-01 Rong-Zhang Lin 鋼筋續接器
KR102078624B1 (ko) * 2016-04-22 2020-02-18 엠3에스 홀딩스 피티와이 엘티디 조정 가능한 콤팩트한 잭킹 커플러 및 이용 방법
USD813023S1 (en) 2016-08-08 2018-03-20 Reigstad & Associates, Inc. Post-tension concrete splicing device
USD814912S1 (en) * 2016-08-08 2018-04-10 Reigstad & Associates, Inc. Post-tension concrete splicing device
KR102643969B1 (ko) 2016-09-12 2024-03-05 쿠플러 솔루션즈 리미티드 결합 장치, 연관된 부품들, 및 그것의 사용 방법
JP7060428B2 (ja) * 2018-03-30 2022-04-26 株式会社フジタ 充填材収容部材およびねじ節鉄筋の連結構造
US11286683B2 (en) * 2019-03-12 2022-03-29 Idaho State University Ductile connections for pre-formed construction elements
CN109811966A (zh) * 2019-03-26 2019-05-28 上海市城市建设设计研究总院（集团）有限公司 自锁闪插式钢筋机械连接接头
CN110966295A (zh) * 2020-01-08 2020-04-07 莫崇规 免开丝螺母连接
US11578493B2 (en) 2021-06-29 2023-02-14 Saudi Arabian Oil Company Mechanical couplings for reinforcing bars
US11773888B2 (en) 2021-08-25 2023-10-03 House of Atlas, LLC Rod connector system and methods of use

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US5193932A (en) * 1992-05-14 1993-03-16 Wu Tsung Hwei Coupler for reinforcing bars
JPH06180064A (ja) * 1992-12-11 1994-06-28 Hiroshi Yoshino 外ネジと内ネジを設け鉄筋を接合する継ぎ手
WO1999005375A1 (fr) * 1997-07-28 1999-02-04 Gyeng Ok Chung Structure permettant d'assembler des barres de renfort

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102322059A (zh) * 2011-06-21 2012-01-18 天津市瑞固建材有限公司 一种预应力管桩接筋连接卡丝
CN102322059B (zh) * 2011-06-21 2013-06-26 天津市瑞固建材有限公司 一种预应力管桩接筋连接卡丝
US20170081853A1 (en) * 2014-05-21 2017-03-23 Yong-keun Kim Rebar connector having a pair of locking pieces and connection method for prefabricated rebar net using same
CN104929319A (zh) * 2015-06-23 2015-09-23 山东明达建筑科技有限公司 一种钢筋连接用灌浆套筒
CN105220835A (zh) * 2015-10-27 2016-01-06 周桂香 一种高强钢筋机械连接的锥楔式套管接头及其实施方法
CN107419853B (zh) * 2017-07-24 2019-09-27 浙江诚骏建设工程有限公司 一种带有中间限位的钢筋直螺纹连接套筒
CN107419853A (zh) * 2017-07-24 2017-12-01 浙江诚骏建设工程有限公司 一种带有中间限位的钢筋直螺纹连接套筒
CN108316563A (zh) * 2018-04-08 2018-07-24 李藏柱 套筒外螺母卡接式连接装置及其连接结构及其安装方法
WO2019196743A1 (fr) * 2018-04-08 2019-10-17 李藏柱 Dispositif de liaison à encliquetage d'écrou externe de manchon, structure de liaison de ce dernier et son procédé de montage
WO2020082261A1 (fr) * 2018-10-24 2020-04-30 毛岩青 Connecteur de barre d'armature intelligent
CN110258966A (zh) * 2019-07-18 2019-09-20 西南科技大学 一种抗拔纤维增强复材筋连接套筒
CN110258966B (zh) * 2019-07-18 2024-04-26 西南科技大学 一种抗拔纤维增强复材筋连接套筒
CN110725480A (zh) * 2019-10-29 2020-01-24 中建七局安装工程有限公司 一种钢筋对接方法及钢筋对接组件
CN110725480B (zh) * 2019-10-29 2023-12-08 中建七局安装工程有限公司 一种钢筋对接方法及钢筋对接组件
CN112144760A (zh) * 2020-08-20 2020-12-29 中建二局第一建筑工程有限公司 一种钢筋续接结构
CN113216522A (zh) * 2021-05-17 2021-08-06 吉林建筑大学设计研究院有限责任公司 一种钢筋连接套筒及钢筋连接方法
CN114592605A (zh) * 2022-03-08 2022-06-07 上海应用技术大学 利用frp-灌浆套筒连接的长跨混凝土梁及加工方法

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