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WO1999035354A1 - Metal de couplage de barres d'acier de forme irreguliere - Google Patents

Metal de couplage de barres d'acier de forme irreguliere Download PDF

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Publication number
WO1999035354A1
WO1999035354A1 PCT/JP1998/000063 JP9800063W WO9935354A1 WO 1999035354 A1 WO1999035354 A1 WO 1999035354A1 JP 9800063 W JP9800063 W JP 9800063W WO 9935354 A1 WO9935354 A1 WO 9935354A1
Authority
WO
WIPO (PCT)
Prior art keywords
connecting cylinder
deformed steel
bar
cylinder
steel bar
Prior art date
Application number
PCT/JP1998/000063
Other languages
English (en)
Japanese (ja)
Inventor
Yasuhiro Ozawa
Original Assignee
Yugenkaisya Ozawa Tokusyugiken
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 Yugenkaisya Ozawa Tokusyugiken filed Critical Yugenkaisya Ozawa Tokusyugiken
Priority to AU53429/98A priority Critical patent/AU5342998A/en
Priority to PCT/JP1998/000063 priority patent/WO1999035354A1/fr
Publication of WO1999035354A1 publication Critical patent/WO1999035354A1/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

Definitions

  • the present invention relates to a joint for joining deformed steel bars.
  • deformed steel bars which are widely used as reinforcing bars, are generally made of high-strength steel and cannot be welded by normal welding, the ends of both steel bars must be joined by gas heating, etc. They are sufficiently heated and pressure-welded at both ends with hydraulic jacks.
  • each end of the steel bar is shrunk by about 10 mm due to pressure welding, so it cannot be applied to the joint between constrained steel bars. Therefore, if the deformed reinforcing bar inside the beam is erroneously cut during the renovation of a building, etc., the reinforcing bar cut by the pressure welding method cannot be reconnected, and there is no other applicable bonding method. Therefore, in reality, it was necessary to leave it as it was.
  • the ends of the steel bars are 10 mm each. Because of the degree of shrinkage, so-called ribs cannot be arranged unless the main bars of deformed steel bars are press-welded when arranging the bars, and the workability is poor.
  • Japanese Utility Model Publication No. 6-363639 proposes a metal fitting for deformed steel bars as shown in FIG.
  • the metal fittings are composed of two or more vertically-divided divided bodies 13a, 13b in which grooves 15 and 15 'are formed, into which projections 9 and 9' of deformed steel bars are fitted.
  • a holding cylinder 12A, 12B fitted externally to both ends of the coupling cylinder 11.
  • the connecting cylinder 11 is restrained and integrated with the holding cylinders 12A and 12B fitted to both ends of the connecting cylinder. Therefore, the holding cylinders 12A and 12B are thick and rigid. Must be high. For this reason, the joint of deformed steel bars using the above-mentioned joints has a shape in which both ends are extremely bulged by the holding cylinders 12A and 12B.
  • the reinforcing bars used in the construction of buildings, etc. need to be arranged very tightly in some places. (For example, the foundation of a building) is stiff. Even if the above-mentioned joints are applied to join the reinforcing bars at such a point, the holding cylinders 12 A and 12 B bulge out. In some cases, there is not enough space for the part to be used, and it cannot be used practically.
  • Each of the presser cylinders 12 A and 12 B has a flange section 14, and the presser cylinders 12 A and 12 B are connected to the inner flange section 14.
  • This is a structure in which the outer surface of the connecting cylinder 11 is restrained by being fitted to both ends of the connecting cylinder 11 so as to be in contact with the end face of the connecting cylinder 11. For this reason, when joining deformed steel bars, presser cylinders 12A and 12B are extrapolated in advance to each of the deformed steel bars to be joined, and a connecting cylinder is inserted between the deformed steel bars.
  • an object of the present invention is to provide a joint which can solve all of the problems of the conventional joint. Disclosure of the invention
  • the joint of the present invention has the following features.
  • a cylindrical body composed of two or more vertically-divided divided bodies (2), at least each end of which has a bar insertion portion (10) for inserting a deformed steel bar to be joined.
  • a connecting cylinder (1)
  • a main body (30) obtained by bending a plate material into a sleeve shape, and a pair of flanges (3 la) and (31 b) formed on both ends of the main body (30) so as to face each other. Further, a plurality of bolt holes (7) are formed in the both flange portions (31a) and (31b), and the outer cylindrical body is fitted or inserted into the connecting cylindrical body (1).
  • Grooves (4), (4 ') into which projections of a deformed bar are fitted are formed on the inner surface of each bar-steel insertion portion (10) of the connecting cylinder (1).
  • the connecting cylinder (1) is made of steel having a tensile strength equal to or higher than that of the deformed bar to be joined, and A joint for deformed steel bars, wherein a total radial cross-sectional area of the body (1) is equal to or larger than a radial cross-sectional area of the deformed steel bars.
  • the connecting cylinder (1) is composed of two divided parts (2), and the substantially entire length in the longitudinal direction of the connecting cylinder is a rod pot insertion portion (10). ),
  • the connecting cylinder (1) is made of steel having a tensile strength equal to or higher than that of the deformed steel bar to be joined, and 1) The total cross-sectional area in the radial direction is A metal fitting for a deformed steel bar having a sectional area or more.
  • the outer cylinder 3 is a single member, does not have an inner flange like a conventional fitting, and has an almost straight inner surface, The outer cylinder 3 can be extrapolated to either of the deformed steel bars, and therefore the outer cylinder 3 cannot be extrapolated to only one of the deformed steel bars because sufficient space cannot be secured. In such a construction site, or in a construction site where the working space on one of the deformed bars is not sufficient, it is possible to use the joint bracket.
  • FIG. 1 shows an example of an embodiment of the present invention, and is a plan view of a state where steel bars are joined.
  • FIG. 2 is a cross-sectional view taken along line ⁇ — ⁇ in FIG.
  • FIG. 3 is a longitudinal sectional view along the in-m line in FIG.
  • FIG. 4 is a perspective view of one of the divided portions constituting the connecting cylinder shown in FIG.
  • FIG. 5 is a perspective view showing an example of a deformed steel bar.
  • FIG. 6 is a longitudinal sectional view showing the structure of a conventional joining fitting. BEST MODE FOR CARRYING OUT THE INVENTION
  • FIG. 1 is a plan view showing a state in which steel bars are joined
  • FIG. 2 is a cross-sectional view taken along line ⁇ — ⁇ in FIG. 1
  • FIG. 1 out of III] is a cross-sectional view along the ⁇ line
  • FIG. 4 is a perspective view of one of the divided portions constituting the connecting cylinder.
  • the joint fitting of the present invention is composed of a pair of vertically divided split parts 2a and 2b. And an outer cylinder 3 externally fitted or inserted into the coupling cylinder 1.
  • the connecting cylinder 1 is formed in a tubular shape in a state where the divided parts 2 a and 2 b constituting the connecting cylinder 1 are combined, and at least the inside of each end thereof (in the present embodiment, the connecting cylinder 1
  • the inside of the entire length) is a bar insertion portion 10 for inserting the deformed bar to be joined.
  • a groove 4 into which a circumferential projection 9 of the deformed steel bar is fitted is formed in the inner circumferential direction of the steel bar sandwiching portion 10.
  • a notch 5 is formed on the inner edge of each of the divided parts 2a and 2b along the longitudinal direction to fit a protrusion 9 'along the longitudinal direction on both sides of the deformed steel bar. That is, the notch 5 constitutes a groove 4 ′ as shown in FIG. 2 in a state where the divided portions 2 a and 2 b are overlapped in a cylindrical shape.
  • the inner diameter of the connecting cylinder 1 in the direction between the two divided parts 2a and 2b when the divided parts 2a and 2b are simply overlapped without inserting the deformed steel bar is the deformed steel bar to be joined. Is configured to be the same as or slightly smaller than the outer diameter of. This can prevent rattling when the deformed bar is inserted and tightened.
  • the dimensional accuracy of the deformed bar is not so high, and in addition, the circumferential protrusion 9 of the deformed bar is displaced in the longitudinal direction from the axial protrusion 9 'as shown in Fig. 5. However, since the distance between the protrusions 9 adjacent in the longitudinal direction of the steel bar is substantially equal, it is preferable that the width of the groove 4 of the connecting cylinder 1 be substantially the same as the width of the protrusion 9 of the steel bar.
  • the connecting cylinder 1 is a member that receives a tensile force applied to the deformed steel bar X, it is preferable that the connecting cylindrical body 1 be formed of steel having a tensile strength equal to or higher than that of the deformed steel bar X. The reason is that the total radial cross-sectional area of the connecting cylinder 1 is preferably larger than that of the deformed steel bar X. Good.
  • the outer cylinder 3 includes a main body 30 formed by bending a plate material into a sleeve shape, and a pair of flanges 31 a and 31 b formed on both end edges of the main body 30 so as to face each other. And has a length such that it can be externally fitted or inserted over at least substantially the entire length of the connecting cylinder 1.
  • the outer cylindrical body 3 has a substantially flat plate-shaped surface, and does not have an inner flange portion unlike a conventional fitting.
  • a plurality of bolt insertion holes 7 are formed in the flanges 31a and 31b. Tightening bolts 6 are attached to these bolt holes 7 and the divided parts 2a and 2b in which deformed steel bars are inserted. Tighten the connecting cylinder 1 consisting of
  • the outer cylinder 3 is formed by tightening the flanges 31a and 31b with the tightening port 6 so that the flanges 31a and 31b are separated when the tightening bolt 6 is not attached.
  • the main body 30 of the outer cylindrical body 3 is elastically deformed to restrain the connecting cylindrical body 1. Therefore, the inner diameter of the main body 30 when the flanges 31 a and 31 b are overlapped by elastically deforming the main body 30 in a state in which the main body 30 is not fitted to or externally inserted into the connecting cylinder 1.
  • the inner peripheral length must be smaller than the outer diameter or the outer peripheral length of the connecting cylinder 1 with the deformed bar inserted.
  • the outer surface can be provided with an uneven surface or a large number of protrusions on the outer surface.
  • the outer cylinder is formed using a so-called striped steel plate, the outer cylinder 3 having such an outer surface structure can be obtained.
  • the connecting cylinder 1 may be composed of three or more vertically-divided divided parts.
  • the connecting cylinder 1 and the outer cylinder 3 are not limited to cylindrical shapes, and may be appropriately cut. It can have a planar shape.
  • the outer cylinder 3 only needs to have a length that can be fitted or extrapolated over at least substantially the entire length of the connecting cylinder 1, and therefore, the connecting length of the outer cylinder 3 is increased. There is no problem if it is slightly shorter.
  • the ends of the deformed steel bars X to be joined are opposed to each other at an appropriate interval, and the both ends are joined by a pair of divided parts 2 constituting the connecting cylinder 1.
  • a and 2b are inserted at the bar insertion portion 10.
  • the protrusions 9 and 9 ′ of the steel bar are fitted into the grooves 4 and 4 ′ of the steel bar insertion portion 10.
  • the outer cylinder 3 previously extrapolated to one of the deformed steel bars X is moved so as to be externally fitted or inserted into the connecting cylinder 1.
  • the projections 9, 9 of the deformed steel bar are fitted into the grooves 4, 4 'of the steel bar insertion portion, and the outer cylinder 3 is externally fitted or externally fitted to the connecting cylinder 1.
  • the connecting cylinder 1 is externally fitted or externally fitted to the connecting cylinder 1.
  • the outer cylindrical body 3 in which the flanges 3 la and 31 b are tightened with the tightening bolts 6 is substantially equivalent to the connecting cylindrical body 1.
  • the entire length is firmly restrained, and the divided sections 2a and 2b are prevented from spreading outward, and the deformed steel bar X and connecting cylinder 1 are connected. Strongly integrated without rattling. For this reason, the bar
  • the protrusions 9, 9 of the steel bar fitted in the grooves 4, 4 ′ of 10 do not come off the grooves, and therefore, the deformed steel bar X does not come off from the connecting cylinder 1.
  • the connecting cylinder 1 by making the material and cross-sectional area of the connecting cylinder 1 approximately the same as or larger than that of the deformed steel bar X, it is high in tensile strength when applied to reinforcing bars and other joining applications. Strength is obtained.
  • the strength against bending can be obtained only by the outer cylinder 3 and the connecting cylinder 1 constrained by the outer cylinder 3, and therefore, the outer cylinder 1 can be sufficiently bent without bending the outer cylinder 1 excessively thick. Strength is obtained.
  • the outer cylinder body 3 does not have an inner flange portion as in the case of the conventional joining metal fittings, and has an almost straight inner surface, the outer cylindrical body 3 can be attached to either side of the two deformed steel bars X to be joined.
  • the outer cylinder 3 can be extrapolated.
  • joint fitting of the present invention is suitable for joining deformed reinforcing bars serving as reinforcing members, it is also necessary to use deformed steel bars as tie rods in dam construction and harbor construction. It can be used for all joining applications of deformed steel bars, such as joints of various types.
  • Industrial applicability INDUSTRIAL APPLICABILITY The joint fitting of the present invention can be widely used for construction work of various buildings and structures, civil engineering work, etc. for joining deformed reinforcing bars serving as a reinforcing material, and deformed steel bars are used in dam construction, harbor construction, etc. It can be used as a joining tool when used as a tie rod, and can be used for all joining purposes of deformed steel bars.

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

Abstract

L'invention concerne un métal de couplage de barres d'acier de forme irrégulière présentant une excellente résistance à la flexion, une grande résistance à la traction et une grande résistance à la compression, ce métal pouvant être appliqué dans des positions où un montage serré de barres est nécessaire pour assurer un écoulement libre de ciment entre les barres, et pouvant également être utilisé dans un endroit où un espace de travail suffisant ne peut pas être dégagé. Le métal de couplage comprend un cylindre de connexion formé d'un corps cylindrique comportant au moins deux éléments fendus longitudinalement et dont au moins chaque côté d'extrémité sert de partie de serrage de barre destinée au serrage d'une barre de forme irrégulière à coupler à une autre barre; un cylindre extérieur comprenant une partie de corps principale formée par flexion d'une matière de feuille en une forme de manchon; deux parties de rebord formées de manière à se faire face l'une à l'autre aux deux extrémités de la partie de corps principale, les rebords présentant plusieurs trous d'introduction de verrous et étant ajustés au cylindre de connexion ou introduits dans le cylindre de connexion à partir de l'extérieur; et des verrous de fixation destinés à fixer les deux rebords lorsqu'ils sont ajustés dans les trous d'introduction de verrous des rebords, des creux dans lesquels s'ajustent des saillies des barres d'acier de forme irrégulière étant formés dans la surface intérieure de chaque partie de serrage de barre d'acier du cylindre de connexion.
PCT/JP1998/000063 1998-01-09 1998-01-09 Metal de couplage de barres d'acier de forme irreguliere WO1999035354A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU53429/98A AU5342998A (en) 1998-01-09 1998-01-09 Coupling metal of odd-shaped bar steels
PCT/JP1998/000063 WO1999035354A1 (fr) 1998-01-09 1998-01-09 Metal de couplage de barres d'acier de forme irreguliere

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1998/000063 WO1999035354A1 (fr) 1998-01-09 1998-01-09 Metal de couplage de barres d'acier de forme irreguliere

Publications (1)

Publication Number Publication Date
WO1999035354A1 true WO1999035354A1 (fr) 1999-07-15

Family

ID=14207375

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1998/000063 WO1999035354A1 (fr) 1998-01-09 1998-01-09 Metal de couplage de barres d'acier de forme irreguliere

Country Status (2)

Country Link
AU (1) AU5342998A (fr)
WO (1) WO1999035354A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001055526A1 (fr) * 2000-01-29 2001-08-02 Robert Copping Fixation
EP1205671A1 (fr) * 2000-11-11 2002-05-15 Suntisuk Dr. Plooksawasdi Structure de connexion autobloquante
ES2186495A1 (es) * 1999-12-08 2003-05-01 Plooksawasdi Suntisuk Conexiones de barras de acero autoacoplables.
US7624556B2 (en) 2003-11-25 2009-12-01 Bbv Vorspanntechnik Gmbh Threaded deformed reinforcing bar and method for making the bar
US11293182B2 (en) 2016-09-12 2022-04-05 Coupler Solutions Limited Coupling device, associated parts and a method of use thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58161206U (ja) * 1982-04-23 1983-10-27 伊東　寛治 割金具を用いた棒鋼接続具及び締付具
JPH0492920U (fr) * 1990-12-26 1992-08-12

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58161206U (ja) * 1982-04-23 1983-10-27 伊東　寛治 割金具を用いた棒鋼接続具及び締付具
JPH0492920U (fr) * 1990-12-26 1992-08-12

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2186495A1 (es) * 1999-12-08 2003-05-01 Plooksawasdi Suntisuk Conexiones de barras de acero autoacoplables.
WO2001055526A1 (fr) * 2000-01-29 2001-08-02 Robert Copping Fixation
US6773198B2 (en) 2000-01-29 2004-08-10 Robert Copping Fixture
EP1205671A1 (fr) * 2000-11-11 2002-05-15 Suntisuk Dr. Plooksawasdi Structure de connexion autobloquante
US7624556B2 (en) 2003-11-25 2009-12-01 Bbv Vorspanntechnik Gmbh Threaded deformed reinforcing bar and method for making the bar
US11293182B2 (en) 2016-09-12 2022-04-05 Coupler Solutions Limited Coupling device, associated parts and a method of use thereof
US11332935B2 (en) 2016-09-12 2022-05-17 Coupler Solutions Limited Coupling device, associated parts and a method of use thereof
US11773595B2 (en) 2016-09-12 2023-10-03 Coupler Solutions Limited Coupling device, associated parts and a method of use thereof

Also Published As

Publication number Publication date
AU5342998A (en) 1999-07-26

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