EP2055853B1 - Outil permettant de relier des barres d'armature - Google Patents

Outil permettant de relier des barres d'armature Download PDF

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Publication number
EP2055853B1
EP2055853B1 EP20070790278 EP07790278A EP2055853B1 EP 2055853 B1 EP2055853 B1 EP 2055853B1 EP 20070790278 EP20070790278 EP 20070790278 EP 07790278 A EP07790278 A EP 07790278A EP 2055853 B1 EP2055853 B1 EP 2055853B1
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EP
European Patent Office
Prior art keywords
sleeve
reinforcing bars
reinforcing bar
wedge
reinforcing
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EP20070790278
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German (de)
English (en)
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EP2055853A4 (fr
EP2055853A1 (fr
Inventor
Satoshi Murayama
Mitsuhiro Yoshida
Takaaki Hirayama
Yoshitaka Kurihara
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Okabe Co Ltd
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Okabe Co Ltd
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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
    • 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 applied when joining reinforcing bars together.
  • 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 for joining the 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.
  • 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 1, Patent Document 2, and Non-Patent Document 1)
  • the reinforcing bars may suffer a bending moment which does not occur when undergoing tensile forces alone.
  • the sleeve rotation can also subject the opening edges of the sleeve to some of the tensile forces acting on the reinforcing bars, thereby causing a split in the sleeve.
  • Reaction forces from the sleeve against the forces for acting to widen the opening edges of the sleeve can also act on the reinforcing bars to break them.
  • the rotation of the sleeve may also loosen the engagement between the reinforcing bars and the wedge member, so that the reinforcing bars are sometimes drawn out from the sleeve.
  • Patent Document 3 notch the opening edges obliquely so as to avoid concentration of stress on the reinforcing bars
  • Patent Document 4 to form a wedge of X-shaped section to avoid wedge rotation
  • JP 2002 339506 A JP S58 64727 U ; GB 2 178 818 A ; JP S51 5823 A .
  • the present invention has been achieved in view of the foregoing circumstances. It is thus an object thereof to provide a reinforcing bar joint applicable to main reinforcing bars of an RC structure or SRC structure, capable of avoiding a decrease in the tensile strength of two reinforcing bars resulting from sleeve rotation when tensile forces act on the reinforcing bars.
  • the applicant have conducted research and development on whether or not it is possible to make a sleeve-based reinforcing bar joint applicable to not only shear reinforcing bars but main reinforcing bars as well, by reducing the amount of sleeve rotation, if not eliminating the sleeve rotation completely, when joining reinforcing bars with this reinforcing bar joint.
  • the applicant has succeeded in reducing the amount of sleeve rotation, and consequently the bending deformation of the reinforcing bars can be suppressed and the pulling out of the reinforcing bars from the sleeve can be prevented, with a new configuration using a plurality of wedge members and pressing the same into place at well-spaced positions.
  • a first wedge member and a second wedge member bite into a first reinforcing bar and a second reinforcing bar under reaction forces from the inner periphery of a sleeve when they are pressed into and between the first and second reinforcing bars. That is, by biting in of the two wedge members and the binding effect of the sleeve, the sleeve becomes to one body with the first and second reinforcing bars, and the first and second wedge members at the area from the vicinity of the press-in position of the first wedge member to the vicinity of the press-in position of the second wedge member. Therefore, the sleeve rotates with the first and second reinforcing bars and the first and second wedge members as a body when the sleeve is rotated by tensile forces acting on the first and second reinforcing bars.
  • pulling out refers to a shear fracture of a reinforcing bar at a position where a wedge member bites into (an area of chipped section).
  • a sleeve split refers to a splitting fracture of a sleeve edge in contact with a reinforcing bar.
  • a wedge break refers to breakage of a reinforcing bar at a position where a wedge member bites in (an area of chipped section).
  • base-material fracture refers to fracture of a reinforcing bar at a location other than where the wedge members are driven in.
  • the present invention is characterized in that the points of action of tensile forces can be shifted outward by providing of two press-in positions of wedge members so that the increased distance between the points of action reduces the amount of sleeve rotation.
  • the wedge members are therefore not limited to two in number. That is, in the case of three wedge members, the distance between the points of action refers to the distance between two outermost wedge insertion holes among three wedge insertion holes. In this case, two of the three wedge members to be driven into the outermost wedge insertion holes correspond to the first and second wedge members according to the present invention.
  • the sleeve may have any specific configuration as long as it is configured so that the first reinforcing bar and the second reinforcing bar can be inserted into openings in both ends with a predetermined overlapping length, and the first wedge member and the second wedge member can be driven into two wedge insertion holes therein.
  • sleeve specifications such as the sectional shape, length, and hardness of the sleeve may be determined arbitrarily.
  • the sleeve is given a hardness relatively lower than those of the first and second reinforcing bars, it is possible to avoid a splitting fracture of the sleeve, a pulling out of the reinforcing bars from the sleeve and a wedge break of the reinforcing bars, thereby allowing base-material fracture of the reinforcing bars without fail.
  • the sleeve may be annealed during the manufacturing process, for example.
  • Fig. 1A is a front view of the reinforcing bar joint according to the present embodiment.
  • Fig. 1B is a sectional view taken along the line A-A of Fig. 1A .
  • the reinforcing bar joint 1 according to the present embodiment comprises a sleeve 2 having an elliptic section, and a wedging means 4.
  • the sleeve 2 is configured so that the end of a reinforcing bar 5a, or a first reinforcing bar, and the end of a reinforcing bar 5b, or a second reinforcing bar, can be inserted into openings 6a, 6b in respective ends with a predetermined length of overlap.
  • the wedging means 4 comprises a wedge member 4a, or a first wedge member, and a wedge member 4b, or a second wedge member, to be pressed into between the reinforcing bars 5a, 5b.
  • the sleeve 2 is composed of a pair of semicylindrical wall portions 7, 7 which are arranged with their curved inner surfaces opposite each other, and a pair of flat wall portions 8, 8 which extend to the corresponding edges of the pair of semicylindrical wall portions.
  • the pair of flat wall portions 8, 8 are provided with wedge insertion holes 9a, 9a for the wedge member 4a to be inserted through and wedge insertion holes 9b, 9b for the wedge member 4b to be inserted through.
  • the wedge insertion holes 9a, 9a and the wedge insertion holes 9b, 9b are spaced from each other by a distance L along the axes of the reinforcing bars 5a, 5b.
  • the sleeve 2 may be formed, for example, by inserting a die into a cylindrical pipe, and applying pressure to the outer periphery at given areas so as to make the flat wall portions.
  • the wedge insertion holes 9a, 9a are formed in the flat wall portions 8, 8 respectively so as to be disposed face to face with each other near the end of the reinforcing bar 5b.
  • the wedge insertion holes 9b, 9b are formed in the flat wall portions 8, 8 respectively so as to be disposed face to face with each other near the end of the reinforcing bar 5a.
  • the wedge insertion holes 9a, 9a are desirably positioned to avoid the vicinities of the opening edges of the sleeve 2 where the reinforcing bar 5a would be deformed extremely.
  • the wedge insertion holes 9b, 9b are desirably positioned to avoid the vicinities of the opening edges of the sleeve 2 where the reinforcing bar 5b would be deformed extremely. More specifically, it is desirable that the wedge insertion holes 9a,9a are positioned somewhat away from the edges of the sleeve 2, for example, a distance equal to or greater than the diameter of the reinforcing bars. The same thing can be said of the wedge insertion holes 9b, 9b.
  • the reinforcing bar joint 1 is intended to join main reinforcing bars of an RC or SRC structure to each other.
  • the types of steel of the sleeve 2 and the wedge members 4a, 4b may be determined as appropriate in consideration of the hardness and tensile strength of the reinforcing bars 5a, 5b to be joined.
  • the end of the reinforcing bar 5a is initially inserted into one opening 6a of the sleeve 2, and the end of the reinforcing bar 5b is inserted into the other opening 6b of the sleeve 2.
  • the reinforcing bars 5a, 5b are inserted through the sleeve 2 so that their ends overlap each other by a predetermined length.
  • the wedge member 4a is inserted through and pressed into the wedge insertion holes 9a, 9a.
  • the wedge member 4b is also inserted through and pressed into the wedge insertion holes 9b, 9b.
  • a conventionally known wedge driver may be selected and used as appropriate.
  • Figs. 2A and 2B are diagrams showing the state when the wedge driving operation is completed to finish joining the reinforcing bars 5a, 5b.
  • the wedge members 4a, 4b bite into the reinforcing bars 5a, 5b under reaction forces from the inner periphery of the sleeve 2 when they are pressed into between the reinforcing bars 5a, and 5b.
  • This biting in of the two wedge members 4a, 4b and the binding effect of the sleeve 2 for binding the reinforcing bars 5a, 5b make the reinforcing bars 5a, 5b, the wedge members 4a, 4b, and the sleeve 2 generally integral as a whole within the range of an area P from the vicinity of the press-in position of the wedge member 4a to the vicinity of the press-in position of the wedge member 4b as shown in Fig. 3A , as far as the rotation of the sleeve 2 ascribable to tensile forces acting on the reinforcing bars 5a, 5b is concerned.
  • the conventional integral area is no more than the area P', while the integral area in the present embodiment is as wide as the area P.
  • the points of action of the tensile forces acting on the reinforcing bars thus shift from points P 1 ', which fall on the boundaries of the area P', to points P 1 , which fall on the boundaries of the area P.
  • the location of the boundaries of the area P for integrating the reinforcing bars 5a, 5b, the sleeve 2, and the wedge members 4a, 4b depends on the length of the sleeve 2. More specifically, if the sleeve 2 is long, the boundaries of the area P shift toward the ends of the sleeve 2 because of the binding effect. If the sleeve 2 is short, the boundaries of the area P shift toward the center of the sleeve since not much binding effect is expected. The boundaries of the area P also depend on the strength of the sleeve 2.
  • the sleeve 2 has a high strength, the boundaries of the area P shift toward the ends of the sleeve 2 due to the binding effect. If the sleeve 2 has a low strength, the boundaries of the area P shift toward the center of the sleeve since not much binding effect is expected.
  • Figs. 4A and 4B are diagrams showing how the sleeve rotates when tensile forces act on the reinforcing bars.
  • Fig. 4A shows a case of the present embodiment where the distance between the points of action is M.
  • Fig. 4B shows a case of conventional technology where the distance between the points of action is M'.
  • the amount of rotation of the sleeve when the reinforcing bars undergo tensile forces is ⁇ ' ( Fig. 4B ).
  • the amount of rotation greatly decreases to as low as ⁇ ( Fig. 4A ).
  • the wedge insertion holes 9a, 9a for the wedge member 4a to be inserted through and the wedge insertion holes 9b, 9b for the wedge member 4b to be inserted through are spaced apart from each other by a distance L along the axes of the reinforcing bars 5a, 5b. Since the wedge members 4a, 4b are pressed into these wedge insertion holes 9a, 9b, it is possible to reduce the amount of rotation of the sleeve 2 significantly when tensile forces act on the reinforcing bars 5a, 5b.
  • the sleeve 2 is naturally longer since the two wedge members 4a, 4b are spaced apart from each other when pressed into between the reinforcing bars 5a, 5b.
  • Figs. 5 and 6 are photographs showing the results of tensile tests.
  • Fig. 5 shows a test piece corresponding to the present embodiment, having two wedge members.
  • the reinforcing bars were US #8 reinforcing bars (GRADE 60; #8 is equivalent to Japanese Industrial Standards (JIS) D25).
  • Fig. 6 shows a test piece corresponding to conventional technology, having one wedge member.
  • the reinforcing bars were US #6 reinforcing bars (GRADE 60; #6 is equivalent to JIS D19).
  • the test piece utilizing conventional technology showed a large rotation of the sleeve due to tensile forces acting on the reinforcing bars.
  • the reinforcing bars also suffered large bending deformation resulting from the rotation.
  • the bending of the reinforcing bars also produced force components acting to widen the sleeve openings, thereby causing a splitting fracture in the sleeve.
  • test piece of conventional technology causes a splitting fracture of the sleeve before base-material fracture of the reinforcing bars.
  • the sleeve showed some rotation due to tensile forces acting on the reinforcing bars, but the amount of rotation was significantly less than in Fig. 6 . Bending deformation of the reinforcing bars ascribable to the rotation was also small. In consequence, no splitting fracture of the sleeve was caused.
  • reinforcing bar joint 1 is intended to join main reinforcing bars of an RC or SRC structure to each other, it may be applied to join shear reinforcing bars to each other instead.
  • a concrete filling hole 51 may be provided in the sleeve 2 as shown in Fig. 7 .
  • Table 1 shows the results of a tensile test.
  • the tensile test used reinforcing bars of steel type SD345 (concrete reinforcing steel rod, Japanese Industrial Standard, specification values of 345 N/mm 2 in yield point and 490 N/mm 2 in tensile strength), having a diameter of D22 (nominal cross-sectional area of 387.1 mm 2 ). In the cases where two holes were provided, the holes were spaced 50 mm apart. The same holds for the tests to be described hereinafter.
  • test pieces 2 and 3 used sleeves of the same steel type and the same configuration.
  • the difference between the test pieces consists in that the test piece 2 had one wedge member (a pair of wedge insertion holes) while the test piece 3 had two wedge members. From a comparison between these test pieces, it can be seen that the reinforcing bars were pulled out in the case of the sleeve with a single wedge member while base-material fracture in the reinforcing bars was caused in the case of the sleeve with two wedge members.
  • the reinforcing bar joint provides a tensile strength higher than the rated value of the tensile strength of the reinforcing bars when two wedge members are provided. This demonstrates the operation and effect of the present invention.
  • test pieces 5 and 6 used sleeves made of a different steel type from the test pieces 2 and 3, but identical steel type and configuration to each other. As with the comparison between the test pieces 2 and 3, the test pieces 5 and 6 were intended to compare the case of the sleeve with a single wedge member with the case of the sleeve with two wedge members.
  • Test pieces 1 and 4 both had two wedge members, and their sleeves were also identical (with a short sleeve length of 100 mm each) except in thickness.
  • the test piece 1 had a thickness of 4 mm while the test piece 4 had a thickness of 10 mm.
  • test pieces 7 and 8 were provided with the same number of wedge members, and their sleeves were of the same steel type and the same thickness. The difference between these sleeves consisted in that the test piece 7 had a sleeve length of 100 mm while the test piece 8 had a sleeve length of 120 mm.
  • the sleeve length can be increased to reduce sleeve rotation, thereby avoiding a split of the sleeve ends, and pulling out and a wedge break of the reinforcing bars.
  • Table 2 shows the results of another tensile test.
  • pulling out refers to a shear fracture of a reinforcing bar at a position where a wedge member bites into (an area of chipped section).
  • a split refers to a splitting fracture of a sleeve end in contact with a reinforcing bar.
  • a wedge break refers to a breakage of a reinforcing bar at a position where a wedge member bites into (an area of chipped section).
  • the tensile test used reinforcing bars of steel type SD390 (concrete reinforcing steel rod, Japanese Industrial Standard, specification values of 390 N/mm 2 in yield point and 560 N/mm 2 in tensile strength), having a diameter of D22. If a test result included variations, the plurality of results is shown in the "test result" field.
  • a test piece 9 produced variations in the result.
  • the sleeve was extended in length from 100 mm to 110 mm to provide test pieces 10 to 12, most of which successfully showed base-material fracture.
  • the reason for this is considered to be as follows: When the sleeve is short, the amount of rotation increases, producing a large bending moment on the reinforcing bars. This greatly affects the areas at which a wedge member bites into the bars (areas of chipped section), causing a wedge break of the reinforcing bars. If the sleeve is made longer, conversely, the amount of rotation decreases to correspondingly reduce the bending moment on the reinforcing bars. This reduces the effect on the areas at which a wedge member bites into the bars, allowing base-material fracture.
  • test pieces 10 to 12 had tensile strength ratios of 0.93 to 0.99, however, showing that there is still room for performance improvement.
  • the tensile strength ratio refers to the ratio of a tensile strength obtained by a test to the tensile strength of the reinforcing bars (material). If this value is below 1, it means that the two reinforcing bars are jointed with a decrease in tensile strength.
  • the sleeve thickness was increased to 5 mm to provide test pieces 13 and 14. No great improvement was observed, however.
  • the sleeve length can be optimized to provide a certain tensile strength ratio but no further improvement even at increased thicknesses.
  • the sleeves of the test pieces 9 to 14 were made of S45C (carbon steel for machine structural use, Japanese Industrial Standard) non-annealed raw material. Since the S45C raw material has sufficient hardness without quenching, the test pieces 15 to 20 of S45C were annealed into a hardness lower than that of the reinforcing bars.
  • S45C carbon steel for machine structural use, Japanese Industrial Standard
  • the test pieces 18 to 20 of approximately 4.8 mm in thickness showed tensile strength ratios of approximately 1, and all allowed base-material fracture of the reinforcing bars.
  • the reason for this is considered to be that the annealing makes the sleeve highly ductile, thereby reducing reaction forces acting from the regions of the sleeve edges on the reinforcing bars and stresses occurring in the reinforcing bars due to those reaction forces. Asperities on the peripheries of the reinforcing bars can also bite into the inner periphery of the sleeve, absorbing asperity variations on the peripheries of the reinforcing bars.
  • Table 3 shows the results of the same tensile test where the reinforcing bars were changed from D22 to D25 in diameter. Although the sleeve lengths were changed to 110 to 130 mm in accordance with the increase in bar diameter, the test results were generally the same as with the test pieces 9 to 20.
  • the test pieces 28 to 35 of annealed S45C showed tensile strength ratios of approximately 1. All the test pieces excluding some of the test piece 33 allowed base-material fracture of the reinforcing bars.
  • the reason for this is considered to be that the annealing makes the sleeve highly ductile, thereby reducing reaction forces acting from the regions of the sleeve ends on the reinforcing bars and stresses occurring in the reinforcing bars due to those reaction forces. Asperities on the peripheries of the reinforcing bars can also bite into the inner periphery of the sleeve, absorbing asperity variations on the peripheries of the reinforcing bars.
  • test piece 35 in which the sleeve length was changed from 120 mm to 130 mm successfully caused base-material fracture without fail, and improved the tensile strength ratio to 1.00 to 1.01. The reason seems to be that the longer sleeve reduced the amount of sleeve rotation.
  • the sleeve thickness may also be increased for improved sectional properties, ascribing the foregoing splitting fracture of sleeves to a decrease in sleeve strength because of annealing. Even with this method, it seems possible to avoid a splitting fracture of the sleeve and allow base-material fracture of the reinforcing bars without fail.
  • the sleeve length may be increased to suppress sleeve rotation so that the load acting on the sleeve decreases.

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

Claims (4)

  1. Joint de barre d'armature (1) comprenant :
    un manchon (2) ayant une section elliptique et des ouvertures (6a, 6b) dans deux extrémités, les extrémités d'une première barre d'armature (5a) et d'une seconde barre d'armature (5b) pouvant être insérées dans lesdites ouvertures (6a, 6b) respectivement, de sorte que les extrémités des première et seconde barres d'armature (5b) se chevauchent sur une longueur prédéterminée, le manchon (2) comprenant au moins une paire de parties de paroi plates opposées avec des trous d'insertion de cale (9a, 9b) formés à l'intérieur de ces dernières, respectivement ; et
    un moyen de calage (4) destiné à être inséré à travers lesdits trous d'insertion de cale (9a, 9b), ledit moyen de calage (4) comprenant un premier élément de cale (4a) destiné à être inséré à travers l'un desdits trous d'insertion de cale (9a, 9b) positionné sur un côté de l'extrémité de ladite seconde barre d'armature (5b), et un second élément de cale (4b) destiné à être inséré à travers l'un desdits trous d'insertion de cale (9a, 9b) positionné sur un côté de l'extrémité de ladite première barre d'armature (5a),
    caractérisé en ce que ledit moyen de calage (4) est comprimé entre ladite première barre d'armature (5a) et ladite seconde barre d'armature (5b) et
    ladite première barre d'armature (5a) et ladite seconde barre d'armature (5b) étant des barres d'armature principales destinées à être utilisées dans une structure en bêton armé ou une structure en béton renforcé en fibres d'acier.
  2. Joint de barre d'armature (1) comprenant :
    un manchon (2) ayant une section elliptique et des ouvertures (6a, 6b) dans deux extrémités, les extrémités d'une première barre d'armature (5a) et d'une seconde barre d'armature (5b) pouvant être insérées dans lesdites ouvertures (6a, 6b) respectivement, de sorte que les extrémités des première et seconde barres d'armature (5b) se chevauchent sur une longueur prédéterminée, le manchon (2) comprenant au moins une paire de parties de paroi plates opposées avec des trous d'insertion de cale (9a, 9b) formés à l'intérieur de ces dernières, respectivement ; et
    un moyen de calage (4) destiné à être inséré à travers lesdits trous d'insertion de cale (9a, 9b), ledit moyen de calage (4) comprenant un premier élément de cale (4a) destiné à être inséré à travers des trous desdits trous d'insertion de cale (9a, 9b) positionnés sur un côté de l'extrémité de ladite seconde barre d'armature (5b), et un second élément de cale (4b) destiné à être inséré à travers des trous desdits trous d'insertion de cale (9a, 9b) positionnés sur un côté de l'extrémité de ladite première barre d'armature (5a),
    caractérisé en ce que ledit moyen de calage (4) est comprimé entre ladite première barre d'armature (5a) et ladite seconde barre d'armature (5b), et
    ladite première barre d'armature (5a) et ladite seconde barre d'armature (5b) étant des barres d'armature de cisaillement destinées à être utilisées dans une structure en béton armé ou une structure en béton renforcé en fibres d'acier.
  3. Joint de barre d'armature (1) selon la revendication 1 ou 2, caractérisé en ce que ledit manchon (2) a une dureté relativement inférieure à celles de ladite première barre d'armature (5a) et de ladite seconde barre d'armature (5b).
  4. Joint de barre d'armature (1) selon la revendication 3, caractérisé en ce que ledit manchon (2) peut être recuit lors d'un procédé de fabrication du manchon (2).
EP20070790278 2006-08-24 2007-07-23 Outil permettant de relier des barres d'armature Active EP2055853B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006227514 2006-08-24
PCT/JP2007/000783 WO2008023456A1 (fr) 2006-08-24 2007-07-23 Outil permettant de relier des barres d'armature

Publications (3)

Publication Number Publication Date
EP2055853A1 EP2055853A1 (fr) 2009-05-06
EP2055853A4 EP2055853A4 (fr) 2014-03-19
EP2055853B1 true EP2055853B1 (fr) 2015-05-20

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US (1) US20100024344A1 (fr)
EP (1) EP2055853B1 (fr)
JP (1) JP5080475B2 (fr)
CN (1) CN101506446A (fr)
TW (1) TW200829769A (fr)
WO (1) WO2008023456A1 (fr)

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US11293182B2 (en) 2016-09-12 2022-04-05 Coupler Solutions Limited Coupling device, associated parts and a method of use thereof

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JP5847483B2 (ja) * 2011-08-05 2016-01-20 株式会社デイ・シイ 橋梁壁高欄の接合工法
NZ610739A (en) 2012-05-18 2014-04-30 Neturen Co Ltd Rebar structure and reinforced concrete member
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CN105089206B (zh) * 2015-08-02 2017-08-04 长安大学 预制装配式混凝土构件用钢筋连接装置及连接方法
CN106151186B (zh) * 2016-06-24 2018-04-03 刘祥锦 一种钢筋连接件、连接方法、连接接头及专用挤压模具
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CN107842146A (zh) * 2017-11-07 2018-03-27 刘祥锦 一种用于钢筋连接的连接件、连接接头及连接施工方法
US20190177977A1 (en) * 2017-12-12 2019-06-13 Jason M. Miller Sleeve for coupling reinforcing bar and a method of using the same
CN108412520B (zh) * 2018-05-16 2024-03-26 中国矿业大学 一种抗撕裂易联接高刚度钢筋网
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CN110258953A (zh) * 2019-06-27 2019-09-20 山东大学 套筒式钢筋机械连接装置
KR102148235B1 (ko) * 2020-02-17 2020-08-26 김용주 띠 철근 풀림 방지장치
CN114737715A (zh) * 2022-03-29 2022-07-12 中国建筑第八工程局有限公司 钢筋交错连接装置及其连接方法
CN114635511B (zh) * 2022-04-18 2023-09-22 重庆道同建材有限公司 一种装配式建筑的预制模块连接工艺

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US11773595B2 (en) 2016-09-12 2023-10-03 Coupler Solutions Limited Coupling device, associated parts and a method of use thereof

Also Published As

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EP2055853A4 (fr) 2014-03-19
EP2055853A1 (fr) 2009-05-06
JPWO2008023456A1 (ja) 2010-01-07
US20100024344A1 (en) 2010-02-04
TW200829769A (en) 2008-07-16
WO2008023456A1 (fr) 2008-02-28
JP5080475B2 (ja) 2012-11-21
CN101506446A (zh) 2009-08-12

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