CA2268878A1 - Method of working connection end of deformed bar for reinforcing concrete, deformed bar worked by the method and structure deformed bar - Google Patents
Method of working connection end of deformed bar for reinforcing concrete, deformed bar worked by the method and structure deformed bar Download PDFInfo
- Publication number
- CA2268878A1 CA2268878A1 CA002268878A CA2268878A CA2268878A1 CA 2268878 A1 CA2268878 A1 CA 2268878A1 CA 002268878 A CA002268878 A CA 002268878A CA 2268878 A CA2268878 A CA 2268878A CA 2268878 A1 CA2268878 A1 CA 2268878A1
- Authority
- CA
- Canada
- Prior art keywords
- deformed bar
- connection end
- end portion
- working
- connection
- 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.)
- Granted
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
- B21B1/163—Rolling or cold-forming of concrete reinforcement bars or wire ; Rolls therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
- E04C5/03—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance with indentations, projections, ribs, or the like, for augmenting the adherence to the concrete
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
- Forging (AREA)
Abstract
With an object of providing a method of working a connection end portion of deformed bar for reinforcing concrete considerably reducing working expense by enhancing easiness of working by promoting mechanical strength of a connection portion by being able to work the connection portion without destructing a steel skeleton structure of a connection portion between pieces of steel bar, deformed bar worked by the method and a connection structure of deformed bar, the invention provides a method of working a connection end portion of deformed bar for reinforcing concrete featured in comprising a swaging step in which in deformed bar for reinforcing concrete featured in swaging at least a connection end portion at normal temperature and forming a rolled thread portion at an outer peripheral face of the connection end portion of the deformed bar subjected to the swaging step in which at least one connection end portion is swaged at a normal temperature such that a maximum diameter of the connection end portion is equal to or slightly larger than a diameter of a cylindrical body of the deformed bar or slightly smaller than a diameter of the deformed bar depending on a degree of working;
and a rolling step of forming a thread portion having a diameter substantially equal to a swaging diameter at an outer peripheral face of the connection end portion of the deformed bar which has been subjected to the swaging step.
and a rolling step of forming a thread portion having a diameter substantially equal to a swaging diameter at an outer peripheral face of the connection end portion of the deformed bar which has been subjected to the swaging step.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019980014746A KR100248963B1 (en) | 1998-03-31 | 1998-04-24 | Thread formation on rods and the method of preparation of them |
JP11091764A JPH11342448A (en) | 1998-03-31 | 1999-03-31 | Method of machining connected end portion of deformed bar for concrete reinforcing and deformed bar machined by this method and connection structure of deformed bar |
AU22574/99A AU2257499A (en) | 1998-03-31 | 1999-03-31 | Method of working connection end of deformed bar for reinforcing concrete, deformed bar worked by the method and structure of connecting deformed bar |
EP99302528A EP0947642B1 (en) | 1998-03-31 | 1999-03-31 | Method of working connection end of deformed bar for reinforcing concrete |
CN99104528A CN1239172A (en) | 1998-03-31 | 1999-03-31 | Processing method and connection structure of joint end of reinforced special and steel for concrete |
CA002268878A CA2268878C (en) | 1998-03-31 | 1999-04-13 | Method of working connection end of deformed bar for reinforcing concrete, deformed bar worked by the method and structure deformed bar |
TW088109033A TW440482B (en) | 1998-03-31 | 1999-06-01 | Manufacture method for concrete-strengthening deformed reinforcement bar and its connecting ends |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR19980011278 | 1998-03-31 | ||
CA002268878A CA2268878C (en) | 1998-03-31 | 1999-04-13 | Method of working connection end of deformed bar for reinforcing concrete, deformed bar worked by the method and structure deformed bar |
TW088109033A TW440482B (en) | 1998-03-31 | 1999-06-01 | Manufacture method for concrete-strengthening deformed reinforcement bar and its connecting ends |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2268878A1 true CA2268878A1 (en) | 2000-10-13 |
CA2268878C CA2268878C (en) | 2003-04-29 |
Family
ID=32965900
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002268878A Expired - Lifetime CA2268878C (en) | 1998-03-31 | 1999-04-13 | Method of working connection end of deformed bar for reinforcing concrete, deformed bar worked by the method and structure deformed bar |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0947642B1 (en) |
JP (1) | JPH11342448A (en) |
KR (1) | KR100248963B1 (en) |
CN (1) | CN1239172A (en) |
AU (1) | AU2257499A (en) |
CA (1) | CA2268878C (en) |
TW (1) | TW440482B (en) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100515204B1 (en) * | 1998-04-13 | 2005-11-21 | 신우산업 주식회사 | Connection structure of reinforcing bar for concrete reinforcement and processing method of the connection |
AU757918B2 (en) * | 1999-02-12 | 2003-03-13 | Industrial Rollformers Pty Ltd | Method for externally threading a deformed bar |
WO2000047349A1 (en) * | 1999-02-12 | 2000-08-17 | Industrial Rollformers Pty. Ltd. | Method for externally threading a deformed bar |
EP1048798B1 (en) * | 1999-04-22 | 2001-10-24 | Ancotech Ag | Method for manufacturing externally threaded reinforcing bars |
EP1154092A1 (en) * | 2000-05-09 | 2001-11-14 | Schöck Enwicklungsgesellschaft mbH | Sleeve connection for reinforcing bars |
KR20020065969A (en) * | 2001-02-08 | 2002-08-14 | 김순분 | Machining method of a screw for a reinforcement bar |
KR100449977B1 (en) * | 2002-04-04 | 2004-10-01 | 김광희 | Connecting structure of reinforced bar for reinforced concreate |
US6880224B2 (en) * | 2003-06-25 | 2005-04-19 | Erico International Corporation | Deformed reinforcing bar splice and method |
US7624556B2 (en) * | 2003-11-25 | 2009-12-01 | Bbv Vorspanntechnik Gmbh | Threaded deformed reinforcing bar and method for making the bar |
ES2238930B1 (en) * | 2004-02-20 | 2007-05-16 | Compañia Española De Laminacion, S.L. | BAR FOR CONCRETE CONCRETE. |
SG155801A1 (en) * | 2008-03-24 | 2009-10-29 | Chua Bong Sai | Method for working a thread on deformed reinforcing bar |
CN101618509B (en) * | 2009-07-30 | 2010-09-29 | 廊坊凯博建设机械科技有限公司 | Equipment and method for processing steel reinforced bar threads |
FR2952840B1 (en) * | 2009-11-26 | 2013-08-02 | Edgard Henri Gerard Albert Thirion | ARMATURE BONDING DEVICE AND METHOD FOR MANUFACTURING THE SAME |
WO2012029079A2 (en) * | 2010-09-03 | 2012-03-08 | Gaurav Malhotra | Reinforcing bar coupling and method |
JP5420712B2 (en) * | 2012-04-19 | 2014-02-19 | 株式会社トーカイ | Deformed bar threaded rebar joint and its threaded deformed bar |
CN104060770B (en) * | 2013-03-22 | 2016-03-30 | 中冶建筑研究总院有限公司 | Steel concrete supporting method |
DE102013208413B4 (en) * | 2013-05-07 | 2019-10-10 | Badische Stahlwerke Gmbh | Reinforcing steel, production method for reinforcing steel |
CN105013984B (en) * | 2014-04-24 | 2017-06-13 | 郑州大学 | Gathering stock high tensile steel wire and preparation method thereof |
CN104191177B (en) * | 2014-08-25 | 2016-06-29 | 苏州第五建筑集团有限公司 | A kind of hot pier straight thread reinforced bar and process units thereof and production technology |
JP2016175092A (en) * | 2015-03-19 | 2016-10-06 | 株式会社アキテック | End screw processing method for reinforcing bar and end structure of reinforcing bar |
CN104942006A (en) * | 2015-06-25 | 2015-09-30 | 江苏永钢集团有限公司 | Asymmetric ribbed shapes for threaded steel finished product grooves and production method thereof |
CN105735566B (en) * | 2016-04-01 | 2019-01-04 | 中国建筑第八工程局有限公司 | The connection sleeve of finish rolling deformed bar |
KR102435778B1 (en) * | 2016-10-13 | 2022-08-23 | 아키라 후쿠다 | Threaded rebar joint structure of deformed rebar and its manufacturing method |
JP6829799B2 (en) * | 2017-04-26 | 2021-02-17 | 株式会社小野工業所 | Reinforcing bar |
CN110202689B (en) * | 2019-07-08 | 2020-06-23 | 湖北思泽新能源科技有限公司 | Hydraulic pliers for connecting reinforcing steel bars |
WO2023069008A1 (en) * | 2021-10-18 | 2023-04-27 | Angkasa Daehan Steel Pte. Ltd. | Method for working a thread on a reinforcing bar for reinforcement of concrete |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2162915B (en) * | 1984-08-09 | 1988-06-02 | Allied Steel Wire Ltd | Reinforcing bar joints |
FR2639054B2 (en) | 1988-02-03 | 1992-07-03 | Techniport Sa | IMPROVEMENTS RELATING TO THE MECHANICAL CONNECTION OF CONCRETE ROUND, PROCESS FOR PRODUCING SUCH CONNECTIONS AND CONCRETE ROUND OBTAINED BY IMPLEMENTING SAID PROCESS |
GB2227802A (en) * | 1989-01-26 | 1990-08-08 | Square Grip Ltd | Concrete reinforcement bar couplings and apparatus for enlarging bar ends |
FR2653809B1 (en) * | 1989-10-26 | 1995-05-12 | Techniport Sa | INSTALLATION FOR PRODUCING CONCRETE ROUND. |
GB2238499A (en) * | 1989-11-09 | 1991-06-05 | Hy Ten Reinforcement Company L | Forming threaded bars |
FR2689156B1 (en) * | 1992-03-30 | 1995-07-13 | Techniport Sa | PROCESS FOR PRODUCING A MECHANICAL CONNECTION OF CONCRETE ROUND, CONNECTION OBTAINED BY THE PROCESS, CONCRETE ROUND AUTHORIZING THE IMPLEMENTATION OF SAID PROCESS, AND CONCRETE ROUND PREPARATION INSTALLATION. |
FI922525A0 (en) * | 1992-06-01 | 1992-06-01 | Tartuntamarkkinointi Oy | FOERFARANDE FOER SKAERNING AV EN GAENGA I EN STAONG. |
US5776001A (en) | 1994-02-16 | 1998-07-07 | Ccl Systems Limited | Thread formation |
-
1998
- 1998-04-24 KR KR1019980014746A patent/KR100248963B1/en not_active IP Right Cessation
-
1999
- 1999-03-31 CN CN99104528A patent/CN1239172A/en active Pending
- 1999-03-31 JP JP11091764A patent/JPH11342448A/en active Pending
- 1999-03-31 EP EP99302528A patent/EP0947642B1/en not_active Expired - Lifetime
- 1999-03-31 AU AU22574/99A patent/AU2257499A/en not_active Abandoned
- 1999-04-13 CA CA002268878A patent/CA2268878C/en not_active Expired - Lifetime
- 1999-06-01 TW TW088109033A patent/TW440482B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
TW440482B (en) | 2001-06-16 |
AU2257499A (en) | 1999-10-14 |
EP0947642A2 (en) | 1999-10-06 |
JPH11342448A (en) | 1999-12-14 |
KR19990076461A (en) | 1999-10-15 |
EP0947642A3 (en) | 2000-01-12 |
CA2268878C (en) | 2003-04-29 |
CN1239172A (en) | 1999-12-22 |
KR100248963B1 (en) | 2000-03-15 |
EP0947642B1 (en) | 2006-05-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed | ||
MKLC | Lapsed (correction) |
Effective date: 20131206 |
|
MKEX | Expiry |
Effective date: 20190415 |