EP2050889A1 - Vorrichtung zum zusammenfügen von bewehrungsstäben - Google Patents

Vorrichtung zum zusammenfügen von bewehrungsstäben Download PDF

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Publication number
EP2050889A1
EP2050889A1 EP07737220A EP07737220A EP2050889A1 EP 2050889 A1 EP2050889 A1 EP 2050889A1 EP 07737220 A EP07737220 A EP 07737220A EP 07737220 A EP07737220 A EP 07737220A EP 2050889 A1 EP2050889 A1 EP 2050889A1
Authority
EP
European Patent Office
Prior art keywords
reinforcing bars
load transfer
sleeve
transfer rod
reinforcing
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
Application number
EP07737220A
Other languages
English (en)
French (fr)
Other versions
EP2050889B1 (de
EP2050889A4 (de
Inventor
Satoshi Murayama
Mitsuhiro Yoshida
Takaaki Hirayama
Yoshitaka Kurihara
Andrew R. Cramer
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.)
Okabe Co Ltd
Original Assignee
Okabe Co 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
Application filed by Okabe Co Ltd filed Critical Okabe Co Ltd
Publication of EP2050889A1 publication Critical patent/EP2050889A1/de
Publication of EP2050889A4 publication Critical patent/EP2050889A4/de
Application granted granted Critical
Publication of EP2050889B1 publication Critical patent/EP2050889B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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

Definitions

  • the present invention relates to a reinforcing bar joint to be used for joining reinforcing bars.
  • Reinforcing bars are main components of reinforced concrete structures (RC structures) and steel-reinforced concrete structures (SRC structures), and are cut in predetermined lengths so as to be arranged easily during configuration on-site. The operation of joining reinforcing bars on-site is thus indispensable.
  • a lap joint can join reinforcing bars easily by utilizing the bar's adhesion to concrete. Since two reinforcing bars must be overlapped, it becomes harder to perform various bar arrangements or secure overlapping lengths of such as the bar diameter increases. Furthermore, a mechanical coupler requires management on such details as the insert length of the reinforcing bars being inserted into the coupler and the fastening torque being applied.
  • a gas-pressure welding joint requires the welder to hold a particular qualification for executing of the gas-pressure welding.
  • one method for joining pairs of mutually parallel reinforcing bars is applicable only to reinforcing bars having fixed spacings, and thus is not sufficiently versatile in terms of bar pitch (see patent document 1).
  • joining methods that use a U-shaped sleeve cannot provide sufficient joint strength (see patent documents 2 and 3).
  • a joint is composed of an elliptic-sectioned steel sleeve and a wedge member. According to such a joint, the end portions of two reinforcing bars are inserted into the sleeve from respective opposite directions, and then the wedge member can be driven into the space between the two reinforcing bars through a wedge insertion hole formed in the sleeve to join the reinforcing bars together (see patent document 4 and non-patent document 1).
  • the present invention has been developed in view of the foregoing circumstances, and it is thus an object thereof to provide a reinforcing bar joint which is capable of avoiding the rotation of its sleeve, providing an enhanced joining force between reinforcing bars.
  • Another object of the present invention is to provide a reinforcing bar joint which is capable of suppressing bending of the reinforcing bars at the position where a wedge member is driven in.
  • a reinforcing bar joint In a reinforcing bar joint according to the present invention, the end portions of two reinforcing bars are inserted into openings in both ends of a sleeve, respectively, so that the reinforcing bars are arranged in series along an identical line.
  • a load transfer rod is also inserted through the sleeve so as to be in parallel with the end portions of the respective reinforcing bars.
  • first wedge member is pressed into the space between either one of the two reinforcing bars and the load transfer rod.
  • a second wedge member is pressed into the space between the other reinforcing bar and the load transfer rod.
  • the sleeve is composed of a pair of semicylindrical wall portions which are arranged with their curved inner surfaces opposing each other, and a pair of flat wall portions which extend to corresponding-edges of the pair of semicylindrical wall portions.
  • the internal space of the sleeve forms a bar insert space at the side of one of the semicylindrical wall portions, and the end portions of the two reinforcing bars are inserted thereto from both the openings of the sleeve, respectively.
  • the side of the other semicylindrical wall portion forms a rod insert space, and the load transfer rod is inserted therethrough from one of the openings into the other opening of the sleeve.
  • Wedge insertion holes are formed in each of the flat wall portions so as to lie between one of the reinforcing bars and the load transfer rod and between the other reinforcing bar and the load transfer rod.
  • first wedge member When the first wedge member is driven into the space between one of the reinforcing bars and the load transfer rod, it bites into and engages both the reinforcing bar and the load transfer rod by taking the reaction force from the semicylindrical wall portions of the sleeve. Similarly, when the second wedge member is driven into the space between the other reinforcing bar and the load transfer rod, it bites into and engages both the other reinforcing bar and the load transfer rod.
  • the first wedge member and the second wedge member have a tapered portion which bites into both the reinforcing bar and the load transfer rod as described above. Which of the two is bitten into to a greater degree depends primarily on the difference in hardness between the two. If the reinforcing bars are not sufficiently bitten into, the engaging forces between the reinforcing bars and the first wedge member and the second wedge member are then insufficient.
  • the load transfer rod have a hardness that is equivalent to or higher than that of the reinforcing bars so that the first and second wedge members bite into the reinforcing bars sufficiently as much as allowable in design.
  • the load transfer rod may, for example, be made of a straight steel rod having a circular cross section.
  • the load transfer rod has only to be arranged beside (on one side of) the two reinforcing bars, which are placed in series, whereas the load transfer rod may sometimes be arranged on both sides of the two reinforcing bars.
  • a first wedge member and a second wedge member are additionally required.
  • the reinforcing bars can sometimes be bent at the positions where the first and second wedge members are driven in, and extend obliquely from the sleeve even if the reinforcing bars have extended straight out from the sleeve prior to the first and second wedge members being pressed in.
  • protruding portions protruding toward the peripheries of the reinforcing bars are desirably formed on the load transfer rod.
  • the protruding portions may have any configuration.
  • the load transfer rod may be made of a straight portion and bent portions formed on both ends of the straight portion so that the bent portions form the protruding portions.
  • the load transfer rod may also be composed of a rod body and large diameter portions that are detachably attached to both ends of the rod body, the large diameter portions having an outer diameter that is greater than the rod body, so that the large diameter portions form the protruding portions.
  • Fig. 1 is a diagram showing a reinforcing bar joint according to the present embodiment.
  • the reinforcing bar joint 1 according to the present embodiment comprises an elliptic-sectioned sleeve 2, a load transfer rod 3 to be inserted through the sleeve, and wedging means 4.
  • the sleeve 2 is configured so that end portions of reinforcing bars 5a, 5b can be inserted into openings 6a, 6b formed in both ends of the sleeve 2 so that the reinforcing bars are arranged in series along an identical line.
  • the load transfer rod 3 can also be inserted therethrough in parallel with the end portions of the reinforcing bars 5a, 5b which are inserted into the sleeve 2.
  • the sleeve 2 is composed of a pair of semicylindrical wall portions 7, 7 which are arranged with their curved inner surfaces opposing each other, and a pair of flat wall portions 8, 8 which extend to the corresponding edges of the pair of semicylindrical wall portions.
  • Wedge insertion holes 9a, 9a are formed in the pair of flat wall portions 8, 8 so as to be opposed to each other.
  • wedge insertion holes 9b, 9b are formed in the flat wall portions 8, 8 so as to be opposed to each other.
  • the load transfer rod 3 is made of a straight steel rod having a circular cross section.
  • the wedging means 4 include a wedge member 4a as a first wedge member to be driven into the space between the reinforcing bar 5a and the load transfer rod 3, and a wedge member 4b as a second wedge member to be driven into the space between the reinforcing bar 5b and the load transfer rod 3.
  • the wedge member 4a is inserted through the wedge insertion holes 9a, 9a which are formed between the reinforcing bar 5a and the load transfer rod 3.
  • the wedge member 4b is inserted through the wedge insertion holes 9b, 9b which are formed between the reinforcing bar 5b and the load transfer rod 3.
  • the wedge member 4a has a tapered portion which bites into both the reinforcing bar 5a and the load transfer rod 3 and wedge member 4b has a tapered portion which bites into both the reinforcing bar 5b and the load transfer rod 3, as described above. Which of the two is bitten into to a greater extent depends primarily on the difference in hardness between the two. If the reinforcing bar 5a is not sufficiently bitten into, the engaging force between the reinforcing bars 5a and the wedge member 4a is then insufficient and similarly if the reinforcing bar 5b is not sufficiently bitten into, the engaging force between the reinforcing bar 5b and the wedge member 4b is then insufficient.
  • the load transfer rod 3 have a hardness that is equivalent to or higher than that of the reinforcing bars 5a, 5b so that the wedge members 4a, 4b sufficiently bite into the reinforcing bars 5a, 5b as much as allowable in design, respectively.
  • the load transfer rod 3 may be made of S45C (carbon steel for machine structural use, JIS).
  • one end portion of the reinforcing bar 5a is initially inserted into one opening 6a of the sleeve 2 and one end portion of the reinforcing bar 5b is inserted into the other opening 6b of the sleeve 2.
  • the load transfer rod 3 is inserted through the sleeve 2. During this inserting operation, the load transfer rod 3 is inserted into the sleeve 2 so as to be in parallel with the end portions of the reinforcing bars 5a, 5b.
  • the wedge member 4a is inserted and pressed into the wedge insertion holes 9a, 9a, and the wedge member 4b is inserted and pressed into the wedge insertion holes 9b, 9b.
  • a conventionally known wedge driver may be selected and used as appropriate.
  • Fig. 2 is a diagram showing a state where the wedge driving operation is completed, resulting in the joining of the reinforcing bars 5a, 5b completely.
  • the end portions of the two reinforcing bars 5a, 5b are inserted into the openings 6a, 6b in both ends of the sleeve 2, respectively, so that the reinforcing bars are arranged in series along an identical line.
  • the load transfer rod 3 is also inserted through the sleeve 2 so as to be in parallel with the end portions of the reinforcing bars, and the two wedge members 4a, 4b are pressed in.
  • the wedge member 4a is pressed into the space between the reinforcing bar 5a and the load transfer rod 3
  • the wedge member 4b is pressed into the space between the reinforcing bar 5b and the load transfer rod 3.
  • the introduction of the load transfer rod 3 makes it possible to transfer tensile loads in the situation where the two reinforcing bars 5a, 5b are arranged in series along an identical line.
  • the tensile loads from the respective reinforcing bars 5a, 5b act on the sleeve 2 along the same line of action, thereby preventing the sleeve 2 from being rotated.
  • the reinforcing bars 5a, 5b are free from bending ascribable to the rotation of the sleeve 2, the reinforcing bars 5a, 5b are precluded from being broken by tension or by bending without the reinforcing bars exercising their tensile strengths. This makes it possible to fully exercise the tensile strengths of the reinforcing bars 5a, 5b.
  • the tensile tests undertaken used wedge members having a wedge length of 48 mm, a wedge diameter of 16 mm, and a tip length of 10 mm.
  • Table 1 shows specifications of the sleeves.
  • the sleeves tested were of three steel types: STKM13A (carbon steel for machine structural use, JIS), S45C (non-heat treated), and S45C (annealed).
  • the wedge members were made of one steel type S45C (refined and hardened).
  • Table 2 shows the results of the respective tensile tests.
  • Cases 1 and 2 were intended to examine the influence of shape variations, before examining what effects the relative difference in hardness between the reinforcing bars and the load transfer rod has on the tensile characteristics.
  • the load transfer rod was made of a deformed bar of steel type (SD345) having the same hardness as that of the reinforcing bars (SD345) to be joined, but was sourced from different steel bar producers.
  • Case 3 was intended to examine the case of using a load transfer rod of a steel type having the same specification (lower limit) of tensile strength as that of the reinforcing bars to be joined.
  • the load transfer rod was made of steel type SNR490B (rolled steel bar (round bar) for building construction use, JIS).
  • Cases 4 and 5 were intended to examine the cases of using load transfer rods of steel type harder than the reinforcing bars to be joined. Because a round bar is insusceptible to shape-based variations in tensile characteristic, the load transfer rods of round shape were used.
  • the load transfer rods were made of steel type S45C (refined) or SCM435.
  • Cases 7 and 9 were generally the same as cases 4 and 5, and were intended to examine the cases of using load transfer rods of steel type harder than the reinforcing bars to be joined. Because a round bar is insusceptible to shape-based variations in tensile characteristic, the load transfer rods of round shape were used.
  • the load transfer rods were made of steel type S45C (refined and hardened).
  • the reinforcing bars to be joined will cause base-material fracture without exception if the load transfer rod is made of steel type (S45C (refined), SCM435, S45C (refined and hardened)) that is harder than the reinforcing bars to be joined (SD345).
  • the load transfer rod must therefore have a hardness such that the degree of biting into the reinforcing bars does not become excessive and also cause deformation of the wedge members.
  • the wedging means be the hardest, and that the load transfer rod, the reinforcing bars to be joined, and the sleeve be made progressively softer in this order.
  • hardness was expressed in terms of tensile strength in order to avoid difficulties in comparison ascribable to different hardness-indicating specifications.
  • Fig. 3 is a diagram showing a reinforcing bar joint according to the second embodiment.
  • the reinforcing bar joint 41 according to the present embodiment comprises an elliptic-sectioned sleeve 2, a load transfer rod 43 to be inserted through the sleeve, and wedging means 4.
  • the load transfer rod 43 is composed of a rod body 45 and large diameter portions 44a, 44b which are protruding portions to be attached to respective ends of the rod body.
  • the large diameter portions 44a, 44b are formed to have an outer diameter that is greater than the rod body 45, and internal threads are cut in their internal cavities.
  • the rod body 45 is made of a straight steel rod having a circular cross section with external threads in both ends. These external threads are engaged with the internal threads of the large diameter portions 44a, 44b respectively so that the large diameter portions 44a, 44b can be detachably attached to the respective ends of the rod body 45.
  • the large diameter portions 44a, 44b have an outer diameter determined so that their peripheries come into contact with the reinforcing bars 5a, 5b respectively when they are engaged with the respective ends of the rod body 45 which is inserted through the sleeve 2. It should be appreciated that the radius of the large diameter portions 44a, 44b is made smaller, if necessary, than the distance from the axis of the rod body 45 to the peripheries of the reinforcing bars 5a, 5b so as not to hinder the operation of screwing the large diameter portions 44a, 44b onto the rod body 45.
  • the wedge members 4a, 4b have a tapered portion which bites into both the reinforcing bar 5a or 5b and the load transfer rod 43. Which of the two is bitten into to a greater degree depends primarily on the difference in hardness between the two. If the reinforcing bars 5a, 5b are not sufficiently bitten into, the engaging forces between the reinforcing bars 5a, 5b and the wedge members 4a, 4b are then insufficient.
  • the load transfer rod 43 have a hardness that is equivalent to or higher than that of the reinforcing bars 5a, 5b so that the wedge members 4a, 4b bite into the reinforcing bars 5a, 5b as much as allowable in design.
  • the load transfer rod 43 may be made of S45C (carbon steel for machine structural use, JIS).
  • the sleeve 2 and the wedging means 4 are the same as used in the first embodiment, and a description thereof will thus be omitted here.
  • one end portion of the reinforcing bar 5a is initially inserted into one opening 6a of the sleeve 2 and one end portion of the reinforcing bar 5b is inserted into the other opening 6b of the sleeve 2.
  • the rod body 45 of the load transfer rod 43 is inserted through the sleeve 2.
  • the rod body 45 is inserted into the sleeve 2 so as to be in parallel with the end portions of the reinforcing bars 5a, 5b.
  • the internal threads of the large diameter portions 44a, 44b are engaged with the external threads that are cut in both ends of the rod body 45, as shown in Fig. 4 , so that the peripheries of the large diameter portions 44a, 44b make contact with the reinforcing bars 5a, 5b. It should be appreciated that if the large diameter portions 44a, 44b are made smaller in radius than the distance from the axis of the rod body 45 to the peripheries of the reinforcing bars 5a, 5b for the convenience of the screwing operation, a clearance occurs accordingly and both members will not be in contact in the strictest sense.
  • the wedge member 4a is inserted and pressed into the wedge insertion holes 9a, 9a, and the wedge member 4b is inserted and pressed into the wedge insertion holes 9b, 9b.
  • a conventionally known wedge driver may be selected and used as appropriate.
  • the end portions of the two reinforcing bars 5a, 5b are inserted into the openings 6a, 6b in both ends of the sleeve 2, respectively, so that the reinforcing bars are arranged in series along an identical line.
  • the load transfer rod 43 is inserted through the sleeve 2 so as to be in parallel with the end portions of the reinforcing bars, and the two wedge members 4a, 4b are pressed in.
  • the wedge member 4a is pressed into the space between the reinforcing bar 5a and the load transfer rod 43
  • the wedge member 4b is pressed into the space between the reinforcing bar 5b and the load transfer rod 43.
  • the new introduction of the load transfer rod 43 makes it possible to transfer tensile loads in the situation where the two reinforcing bars 5a, 5b are arranged in series along an identical line.
  • the ends of the load transfer rod 43 are provided with the detachable large diameter portions 44a, 44b, respectively, and the large diameter portions 44a, 44b are formed so that the large diameter portions protrude toward the peripheries of the reinforcing bars 5a, 5b when attached to the respective ends of the load transfer rod 43. Then, when the wedge members 4a, 4b are driven in and the reinforcing bars 5a, 5b start to bend, the large diameter portions 44a, 44b formed on the load transfer rod 43 make contact with the peripheries of the reinforcing bars 5a, 5b and can thus suppress the bending of the reinforcing bars 5a, 5b.
  • Fig. 5 schematically shows how the reinforcing bars 5a, 5b might be bent.
  • the press-in of the wedge members 4a, 4b can sometimes bend the reinforcing bars 5a, 5b at the driving positions as shown in the diagram. If the large diameter portions 44a, 44b are provided, however, the reinforcing bars 5a, 5b being bent come into contact with and are restrained by the large diameter portions 44a, 44b. As a result, the bending of the reinforcing bars 5a, 5b is suppressed.
  • the protruding portions of the present invention protruding toward the peripheries of the reinforcing bars, are formed as the large diameter portions 44a, 44b. Nevertheless, the protruding portions according to the present invention are not limited to such a configuration.
  • a load transfer rod 53 composed of a straight portion 54 and bent portions 52, 52 formed on respective ends of the straight portion may be employed so that the bent portions 52,-52 form the protruding portions.
  • a single load transfer rod 3 is inserted through the sleeve 2 so that it is in parallel with the end portions of the reinforcing bars 5a, 5b which are inserted into the sleeve 2.
  • two load transfer rods 73, 73 may both be inserted through a sleeve 72 so that they lie on both sides of the reinforcing bars 5a, 5b in parallel when the end portions of the reinforcing bars 5a, 5b are inserted into the sleeve 2.
  • the wedging means 4 includes wedge members 4a, 4a, or first wedge member respectively to be driven into the spaces between the reinforcing bar 5a and the load transfer rods 73, 73, and wedge members 4b, 4b, or second wedge member respectively to be driven into the space between the reinforcing bar 5b and the load transfer rods 73, 73.
  • the wedge members 4a, 4a are inserted through wedge insertion holes 9a, 9a respectively which are formed in flat wall portions of the sleeve 72 between the reinforcing bar 5a and the load transfer rods 73, 73.
  • the wedge members 4b, 4b are inserted through wedge insertion holes 9b, 9b. respectively which are formed in the flat wall portions of the sleeve 72 between the reinforcing bar 5b and the load transfer rods 73, 73.
  • the wedge members 4a, 4a and the wedge member 4b, 4b are the same as those detailed in the first embodiment, and a description thereof will thus be omitted here.
  • load transfer rods 3, 53, and 73 and the rod body 45 in the foregoing embodiments and various modifications thereof are attached on-site, they may instead be attached to the sleeve 2 or the sleeve 72 at a factory or the like in advance.
  • the number of wedge member 4a to be pressed into the space between the reinforcing bar 5a and the load transfer rod 3, and the number of wedge member 4b to be pressed into the space between the reinforcing bar 5b and the load transfer rod 3 is one each.
  • the load transfer rod 53 and the load transfer rod 73 the same thing can be said also.
  • wedge members 4a may be pressed in along the axes of the reinforcing bars 5a.
  • the wedge member 4b the same thing can be said also.
  • the minimum number of wedge members to be pressed in is one for each of the two reinforcing bars. Remaining wedge insertion holes may be left unused.
  • unused wedge insertion holes make concrete filling holes during concrete casting, so that concrete flows into the sleeve.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)
EP07737220A 2006-08-10 2007-05-25 Vorrichtung zum zusammenfügen von bewehrungsstäben Not-in-force EP2050889B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006218932 2006-08-10
PCT/JP2007/000564 WO2008018161A1 (fr) 2006-08-10 2007-05-25 Dispositif pour joindre des barres de renforcement les unes aux autres

Publications (3)

Publication Number Publication Date
EP2050889A1 true EP2050889A1 (de) 2009-04-22
EP2050889A4 EP2050889A4 (de) 2009-07-08
EP2050889B1 EP2050889B1 (de) 2010-08-18

Family

ID=39032702

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07737220A Not-in-force EP2050889B1 (de) 2006-08-10 2007-05-25 Vorrichtung zum zusammenfügen von bewehrungsstäben

Country Status (8)

Country Link
US (1) US20100088995A1 (de)
EP (1) EP2050889B1 (de)
JP (1) JP4840828B2 (de)
CN (1) CN101501284B (de)
AT (1) ATE478211T1 (de)
DE (1) DE602007008576D1 (de)
TW (1) TW200837258A (de)
WO (1) WO2008018161A1 (de)

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JP2009249981A (ja) * 2008-04-10 2009-10-29 Kyushu Sankyo:Kk 鉄筋の溶接方法及びその溶接部探傷方法
JP2010196319A (ja) * 2009-02-24 2010-09-09 Okabe Co Ltd 棒鋼接合装置
JP5423050B2 (ja) * 2009-02-27 2014-02-19 大成ユーレック株式会社 プレキャストコンクリート板の接合方法とその方法に用いられる鉄筋の接合構造
JP2012198121A (ja) 2011-03-22 2012-10-18 Seiko Epson Corp センサー装置および測定方法
JP2012198120A (ja) * 2011-03-22 2012-10-18 Seiko Epson Corp センサー装置
US20130028658A1 (en) * 2011-07-27 2013-01-31 Yee Alfred A Splice sleeve with elliptical or compound curve cross section
NZ610739A (en) 2012-05-18 2014-04-30 Neturen Co Ltd Rebar structure and reinforced concrete member
US10577823B1 (en) 2016-02-15 2020-03-03 Esk, Llc Fence repair device
KR102643969B1 (ko) 2016-09-12 2024-03-05 쿠플러 솔루션즈 리미티드 결합 장치, 연관된 부품들, 및 그것의 사용 방법
CN107338913B (zh) * 2017-08-25 2020-02-21 中冶建工集团有限公司 用于带有墩头的钢筋连接器
US20190177977A1 (en) * 2017-12-12 2019-06-13 Jason M. Miller Sleeve for coupling reinforcing bar and a method of using the same

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US20020104286A1 (en) * 2001-02-07 2002-08-08 Gregel John J. Reinforcing bar splice and method

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NL68896C (de) *
DE1906867A1 (de) * 1969-02-12 1970-09-03 Meyer Keller Noe Schalttech Bewehrungseinrichtung fuer Stahlbetonkonstruktionen
JPH06108588A (ja) * 1992-09-21 1994-04-19 Sekisui House Ltd 鉄筋の接合装置とそれに使用する接合具
US20020104286A1 (en) * 2001-02-07 2002-08-08 Gregel John J. Reinforcing bar splice and method

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Title
See also references of WO2008018161A1 *

Also Published As

Publication number Publication date
US20100088995A1 (en) 2010-04-15
EP2050889B1 (de) 2010-08-18
ATE478211T1 (de) 2010-09-15
DE602007008576D1 (de) 2010-09-30
TW200837258A (en) 2008-09-16
CN101501284B (zh) 2011-01-26
EP2050889A4 (de) 2009-07-08
JP4840828B2 (ja) 2011-12-21
WO2008018161A1 (fr) 2008-02-14
CN101501284A (zh) 2009-08-05
JPWO2008018161A1 (ja) 2009-12-24

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