JP4010552B2

JP4010552B2 - Reinforcing bar joint structure

Info

Publication number: JP4010552B2
Application number: JP2003117524A
Authority: JP
Inventors: 正明阿瀬
Original assignee: 日本スプライススリーブ株式会社
Priority date: 2003-04-22
Filing date: 2003-04-22
Publication date: 2007-11-21
Anticipated expiration: 2023-04-22
Also published as: JP2004324112A

Description

【０００１】
【発明が属する技術分野】
この出願の発明は、鉄筋コンクリート造、或いは鉄骨鉄筋コンクリート造建築物において、ねじ節鉄筋や異形鉄筋等の鉄筋同士の突き合わせ接合や、或いは鉄筋同士を重ね合わせて接合する鉄筋用継手部の構造に関するものである。
【０００２】
【従来の技術】
従来の機械式鉄筋継手として、
１）鉄筋１０１にねじ部１０２を設け（端部機械ねじ・ねじふし鉄筋）、雌ねじ１０３を有するカプラー１０４とのふしのかみ合わせにより接合する方法［図４ａ参照］、
２）鋼管からなる継手金具に鉄筋相互を挿入した後、該継手金具をかしめることにより鉄筋を圧着して接合する方法［図示せず］、
３）スリーブ１０５内に鉄筋相互を挿入した後、スリーブ１０５に設けたグラウト注入孔１０６よりグラウト材を注入し、グラウト材の硬化により鉄筋同士を接合する方法［図４ｂ参照］、
４）鉄筋相互の端面を突き合わせ、ガス圧接により接合する方法［図示せず］、或いは、鋼管の内側に、挿入される鉄筋１０７の外表面形状に適合する内周面形状１０８を備えた継手金具１０９の壁面に孔を設け、該孔から楔１１０を打ち込むことにより接合する方法［図４ｃ参照］、
等が知られている。
【０００３】
しかし、上記１の雌ねじを有するカプラーによる鉄筋の接合は、製造する鉄筋の径・ふし高さ・ふしピッチに合わせて製造されるので、芯ずれやピッチずれが生じると施工しにくいという問題点があった。
【０００４】
また、上記２の継手金具をかしめる手段による接合は、大掛かりな圧着機が必要なことや過密配筋された部位には、機械が入らない・時間がかかる等の問題点があった。
更に、上記３は、これらの問題点を解消しているが、グラウト材の支圧に頼っていることから、スリーブ内部に環状突起を設ける必要があるため継手の外径が太くなる問題点があった。
【０００５】
【発明が解決しようとする課題】
この出願発明は、相対する鉄筋同士を接合する継手部に使用される継手金具の加工を少なくし、継手部の施工が簡易に行えることのできる施工性に優れた継手部の構造とすることにより、従来の問題点を解決するものである。
【０００６】
【課題を解決するための手段】
この出願発明は、鉄筋コンクリート造、又は、鉄骨鉄筋コンクリート造において、相対する鉄筋同士を突き合わせ接合する、或いは重ね合わせて接合する継手部に係るもので、相対する鉄筋端部を、鋼管からなる継手金具と、継手金具の内部に充填される有機グラウト材（例えば、エポキシ樹脂、アクリル樹脂等）により接合することを特徴とするものである。
【０００７】
具体的構成の１は、鉄筋コンクリート造又は鉄骨鉄筋コンクリート造における相対向する鉄筋相互を接合する鉄筋用継手であって、該継手の中央部には注入口、両端部となる開口部にはシール材を取り付けてなり、該両開口部から継手内へ挿入配置した両鉄筋は、その各々の先端部側は中央部を絞り込んだ絞り込み部に当接する位置まで挿入され、両開口部側はシール材により封鎖され、該注入口より該継手内側となる両シール材間に有機グラウト材を注入充填することにより鉄筋相互を接合してなる鉄筋継手部の構造を特徴とする。
【０００８】
具体的構成の２は、継手の内周面には、表面より僅かに突出する突出体を設けた鉄筋継手部の構造を特徴とする。
【０００９】
具体的構成の３は、突出体は、スパイラル状、リング状或いは独立して点在する任意の形状からなる鉄筋継手部の構造を特徴とする。
【００１０】
具体的構成の４は、継手の外周面には、その軸方向に対し直交する面に所定の間隔でリング状のリブを設けた鉄筋継手部の構造を特徴とする。
【００１１】
具体的構成の５は、継手の外周面には、その軸方向に沿って補強リブを設けた鉄筋継手部の構造を特徴とする。
【００１２】
具体的構成の６は、有機グラウト材は、エポキシ樹脂或いはアクリル樹脂とした鉄筋継手部の構造を特徴とする。
【００１３】
【発明の実施の形態】
この出願発明は、鋼管からなる継手金具に、有機グラウト材を注入することにより、鉄筋同士を接合するものである。
以下、鉄筋同士を突き合わせ接合する継手部の構造について詳述する。
【００１４】
【実施例１】
図１ａは、この出願発明である継手金具１により鉄筋２を突き合わせ接合した水平断面図、図１ｂは、図１ａに示すＡ−Ａにおける垂直断面図である。
【００１５】
継手金具１は鋼管１１からなり、該鋼管１１における両端部の近傍内周面に、挿入される鉄筋２を支持し、鋼管内部に注入される有機グラウト材１２の流失を防ぐシール材３を固定する支持突起１３が設けられ、また、開口部の内周面に、シール材３を押さえる隆起部１４が形成されている。
この実施例では、鋼管１１の開口部付近に支持突起１３を設けたが、開口部付近に支持突起等を設けることなく、長尺の鋼管を単に切断した鋼管１１からなる継手金具１でもよい。
【００１６】
そして、鋼管１１の内部に有機グラウト材１２を注入する際に必要な注入口１５が、鋼管１１のほぼ中央部に設けられている。この実施例では、有機グラウト材１２を注入する注入口１５を中央部に設けたが、鋼管１１の一方の端部側に注入口を設け、他方の端部側に排気口を設けてもよい。
【００１７】
また、この実施例では鋼管１１の外周面には何も設けていないが、継手金具１を補強し、コンクリートとの付着をよくするために、鋼管１１の外周面に、軸方向に沿った補強リブ（図示せず）を、或いは、軸方向に対し直交する面に、所定の間隔でリング状の補強リブ（図示せず）を設けてもよい。
上記実施例では、継手金具１における鋼管１１の外面形状を円筒形により形成したが、多角形よりなる角柱でもよく、外面形状はこれに限定されるものではない。
【００１８】
鉄筋２の接合について説明すると、鋼管１１の支持突起１３と隆起部１４との間にシール材３を嵌め込んだ継手金具１の両端部から鉄筋２を所定の位置まで挿入し、次いで、鋼管１１に設けた注入口１５から有機材料の有機グラウト材１２を注入することにより、鉄筋２が突き合わせ接合される。
【００１９】
【実施例２】
図２はこの出願発明の他の実施例で、図２ａは継手金具１により鉄筋２を突き合わせ接合した水平断面図、図２ｂは、図２ａに示すＢ−Ｂにおける垂直断面図である。
【００２０】
継手金具１は上記実施例と同様鋼管１１からなり、鋼管１１の軸方向ほぼ中央に絞り込み部１６を設け、両端部の近傍内周面に、鉄筋３の支持とシール材２を固定する支持突起１３と、開口部の内周面に隆起部１４が設けられている。
しかし、このような支持突起１３を設けることなく、長尺の鋼管を単に切断した鋼管１１の中央に絞り込み部１６を設けたものであってもよい。
【００２１】
そして、鋼管１１の内部に有機グラウト材１２を注入する際に必要な注入口１５が、鋼管１１のほぼ中央部に設けられている。この実施例では、有機グラウト材１２を注入する注入口１５を中央部に設けたが、鋼管１１の一方の端部側に注入口を、他方の端部側に排気口を設けたものでもよい。
【００２２】
この実施例では、鋼管１１の外周面には何も設けていないが、継手金具１を補強し、コンクリートとの付着をよくするために、鋼管１１の外周面に、軸方向に沿った補強リブを、或いは、軸方向に対し直交する面に、所定の間隔で、リング状の補強リブを設けてもよい。
また、上記実施例では、継手金具１における鋼管１１の外面形状を円筒形に形成したが、多角形よりなる角柱でもよく、外面形状はこれに限定されるものではない。
【００２３】
鉄筋２の接合について説明すると、鋼管１１の開口部にシール材３を取り付けた継手金具１の両端部から、鉄筋２の先端部が絞り込み部１６に当接するまで挿入し、次いで、鋼管１１に設けた注入口１５から有機グラウト材１２を注入することにより、鉄筋同士が突き合わせ接合される。
【００２４】
【実施例３】
図３はこの出願発明の他の実施例で、図３ａは継手金具１により鉄筋２を重ね合わせの状態で接合した水平断面図、図３ｂは、図３ａに示すＣ−Ｃにおける垂直断面図である。
【００２５】
継手金具１は他の実施例と同様鋼管１１からなり、鋼管１１の両端部の近傍内周面に、鉄筋２の支持とシール材３を固定する支持突起１３と、開口部の内周面に隆起部１４が設けられている。
しかし、このような支持突起１３を設けことなく、長尺の鋼管を単に切断した鋼管から成るものでもよい。
【００２６】
そして、鋼管１１の内部に有機グラウト材１２を注入する注入口１５が、鋼管１１のほぼ中央部に設けられている。この実施例では、有機グラウト材１２を注入する注入口１５を中央部に設けたが、鋼管１１の一方の端部側に注入口を設け、他方の端部側に排気口を設けたものでもよい。
【００２７】
また、この実施例では、鋼管１１の外周面には何も設けていないが、継手金具１を補強し、コンクリートとの付着をよくするため、鋼管１１の外周面に、軸方向に沿った補強リブを、或いは、軸方向に対し直交する面に、所定の間隔で、リング状の補強リブを設けてもよい。
上記実施例では、継手金具１における鋼管１１の外面形状を矩形としたが、外面形状はこれに限定されるものではない。
【００２８】
鉄筋２の接合について説明すると、鋼管１１の開口部にシール材３を取り付けた継手金具１の両端部から鉄筋２を挿入し、その先端部が反対側の開口部から少し突出した位置で注入口１５から有機グラウト材１２を注入し、有機グラウト材１２の硬化により鉄筋同士が重ね合わされた状態で接合される。
また、鋼管１１のほぼ中央に楔を打ち込む楔孔を設け、継手金具１の両端部から挿入された鉄筋２の先端部が反対側の開口部から少し突出した位置で、筒状体１１に設けた楔孔から楔を打ち込んで鉄筋２を固定し、注入口１５から有機グラウト材１２を注入することにより鉄筋同士が重ね合わされた状態で接合される。以上鋼管による鉄筋継手部の構造について説明したが、鋼管内部に注入される有機グラウト材と継手金具との付着力を大きくするため、鋼管の内周面に、スパイラル状、リング状、或いは独立して点在する任意の形状からなり、表面より僅かに突出する突出体を設けてもよく、その突出高さは１ｍｍ程度とする。
【００２９】
【発明の効果】
この出願発明は、鋼管に鉄筋相互を挿入し、鋼管と鉄筋の間隙に有機グラウト材を注入して、接着効果により継手としての性能を生じせしめるものであり、継手内部に特別な突起を設ける必要もなく、大掛かりな機材を使う必要もなく、施工誤差を容易に吸収できる鉄筋継手を提供するものである。
【図面の簡単な説明】
【図１】（ａ）第１実施例を示す継手金具の水平断面図である。
（ｂ）第１実施例を示す継手金具の垂直断面図である。
【図２】（ａ）第２実施例を示す継手金具の水平断面図である。
（ｂ）第２実施例を示す継手金具の垂直断面図である。
【図３】（ａ）第３実施例を示す継手金具の水平断面図である。
（ｂ）第３実施例を示す継手金具の垂直断面図である。
【図４】（ａ）従来例を示す継手金具の断面図である。
（ｂ）従来例を示す継手金具の断面図である。
（ｃ）従来例を示す継手金具の断面図である。
【符号の説明】
１・・・継手金具
１１・・鋼管
１２・・有機グラウト材
１３・・支持突起
１４・・隆起部
１５・・注入口
１６・・絞り込み部
２・・・鉄筋
３・・・シール材
１０１・鉄筋
１０２・ねじ部
１０３・雌ねじ
１０４・カプラー
１０５・スリーブ
１０６・グラウト注入孔
１０７・鉄筋
１０８・内周面形状
１０９・継手金具
１１０・楔[0001]
[Technical field to which the invention belongs]
The invention of this application relates to a reinforced joint structure or a steel reinforced concrete structure, a butt joint of reinforcing bars such as screw joint reinforcing bars and deformed reinforcing bars, or a structure of a joint part for reinforcing steel bars that are joined by overlapping the reinforcing bars. is there.
[0002]
[Prior art]
As a conventional mechanical rebar joint,
1) A method in which a threaded portion 102 is provided on a reinforcing bar 101 (end machine screw / screw-reinforcing bar) and joined by engaging with a coupler 104 having a female screw 103 [see FIG. 4a]
2) A method of crimping and joining the reinforcing bars by caulking the fittings after inserting the reinforcing bars into the fittings made of steel pipe [not shown],
3) A method of injecting a grout material from a grout injection hole 106 provided in the sleeve 105 after inserting the reinforcing bars into the sleeve 105 and joining the reinforcing bars by hardening the grout material [see FIG.
4) A method of joining end faces of reinforcing bars and joining them by gas pressure welding [not shown], or a joint fitting provided with an inner peripheral surface shape 108 that matches the outer surface shape of the inserted reinforcing bar 107 inside the steel pipe. A method of joining holes 109 by making holes in the wall surfaces and driving wedges 110 through the holes [see FIG. 4c];
Etc. are known.
[0003]
However, since the joining of the reinforcing bars by the coupler having the female screw of the above 1 is manufactured according to the diameter, the height of the reinforcing bars and the pitch of the reinforcing bars to be manufactured, there is a problem that it is difficult to perform the construction if the misalignment or the pitch deviation occurs. there were.
[0004]
In addition, the joining by means of caulking the joint fittings described above has problems that a large-scale crimping machine is required and that the machine does not enter and takes time in an overly densely arranged portion.
Furthermore, the above 3 solves these problems, but since it relies on the support pressure of the grout material, it is necessary to provide an annular protrusion inside the sleeve, so there is a problem that the outer diameter of the joint becomes thicker. there were.
[0005]
[Problems to be solved by the invention]
This invention of this application reduces the processing of the fittings used in the joint part that joins the opposing reinforcing bars, and makes the construction of the joint part excellent in workability so that the construction of the joint part can be performed easily. This solves the conventional problems.
[0006]
[Means for Solving the Problems]
The present invention relates to a joint part in which reinforced concrete structure or steel-framed reinforced concrete structure is used to butt-join each other, or overlap and join, and the opposite reinforced steel bar ends are connected to a joint fitting made of a steel pipe. The organic grouting material (for example, epoxy resin, acrylic resin, etc.) filled in the joint metal fitting is used for the joining.
[0007]
One of the specific configurations is a joint for reinforcing bars that joins opposite reinforcing bars in a reinforced concrete structure or a steel reinforced concrete structure , and an injection port is provided at the center of the joint, and a sealing material is provided at openings that are both ends. The two reinforcing bars that are attached and inserted into the joint from both openings are inserted to the positions where the respective tip ends abut against the squeezed part with the central part squeezed, and both openings are sealed with a sealing material. is characterized by the structure of the reinforcing bar joint formed by joining a reinforcing bar cross by injecting filling the organic grout between both sealing material comprising a該継hand inside the infusion inlet.
[0008]
The specific configuration 2 is characterized by a structure of a reinforcing bar joint portion in which a projecting body slightly projecting from the surface is provided on the inner peripheral surface of the joint.
[0009]
The specific configuration 3 is characterized in that the protrusion has a structure of a reinforcing bar joint portion having a spiral shape, a ring shape, or an arbitrary shape that is independently scattered .
[0010]
A specific configuration 4 is characterized by the structure of a reinforcing bar joint portion in which ring-shaped ribs are provided at predetermined intervals on a surface orthogonal to the axial direction on the outer peripheral surface of the joint.
[0011]
A specific configuration 5 is characterized by the structure of a reinforcing bar joint portion in which reinforcing ribs are provided along the axial direction on the outer peripheral surface of the joint.
[0012]
A specific configuration 6 is characterized by a structure of a reinforcing bar joint portion in which the organic grout material is an epoxy resin or an acrylic resin .
[0013]
DETAILED DESCRIPTION OF THE INVENTION
In the present invention, reinforcing bars are joined together by injecting an organic grout material into a joint fitting made of a steel pipe.
Hereinafter, the structure of the joint part that butt-joins the reinforcing bars will be described in detail.
[0014]
[Example 1]
FIG. 1a is a horizontal sectional view in which the reinforcing bars 2 are butt-joined by the joint fitting 1 according to the present invention, and FIG. 1b is a vertical sectional view taken along line A-A shown in FIG. 1a.
[0015]
The joint fitting 1 is made of a steel pipe 11, and a sealing material 3 is fixed to the inner peripheral surface in the vicinity of both ends of the steel pipe 11 to support the rebar 2 to be inserted and prevent the organic grout material 12 injected into the steel pipe from flowing out. A supporting projection 13 is provided, and a raised portion 14 for pressing the sealing material 3 is formed on the inner peripheral surface of the opening.
In this embodiment, the support protrusion 13 is provided in the vicinity of the opening of the steel pipe 11. However, the fitting 1 made of the steel pipe 11 obtained by simply cutting a long steel pipe may be used without providing the support protrusion in the vicinity of the opening.
[0016]
An injection port 15 necessary for injecting the organic grout material 12 into the steel pipe 11 is provided at a substantially central portion of the steel pipe 11. In this embodiment, the injection port 15 for injecting the organic grout material 12 is provided in the central portion, but the injection port may be provided on one end side of the steel pipe 11 and the exhaust port may be provided on the other end side. .
[0017]
In this embodiment, nothing is provided on the outer peripheral surface of the steel pipe 11, but in order to reinforce the joint fitting 1 and improve adhesion to the concrete, the outer peripheral surface of the steel pipe 11 is reinforced along the axial direction. You may provide a rib (not shown) or a ring-shaped reinforcing rib (not shown) at a predetermined interval on a surface orthogonal to the axial direction.
In the said Example, although the outer surface shape of the steel pipe 11 in the coupling metal fitting 1 was formed in the cylindrical shape, the prism shape which consists of polygons may be sufficient and an outer surface shape is not limited to this.
[0018]
The joining of the reinforcing bars 2 will be described. The reinforcing bars 2 are inserted from both ends of the joint fitting 1 in which the sealing material 3 is fitted between the support projections 13 and the raised portions 14 of the steel pipe 11 to a predetermined position. The rebar 2 is butt-joined by injecting the organic grout material 12 made of an organic material from the injection port 15 provided in the steel plate.
[0019]
[Example 2]
FIG. 2 is another embodiment of the present invention. FIG. 2a is a horizontal sectional view in which the reinforcing bars 2 are butt-joined by the joint fitting 1, and FIG. 2b is a vertical sectional view taken along line BB shown in FIG. 2a.
[0020]
The joint fitting 1 is made of a steel pipe 11 as in the above-described embodiment, and is provided with a narrowing portion 16 at the substantially center in the axial direction of the steel pipe 11, and a support projection for supporting the reinforcing bar 3 and fixing the sealing material 2 on the inner peripheral surface in the vicinity of both ends. 13 and a raised portion 14 is provided on the inner peripheral surface of the opening.
However, the narrowed portion 16 may be provided in the center of the steel pipe 11 obtained by simply cutting a long steel pipe without providing the support protrusion 13.
[0021]
An injection port 15 necessary for injecting the organic grout material 12 into the steel pipe 11 is provided at a substantially central portion of the steel pipe 11. In this embodiment, the injection port 15 for injecting the organic grout material 12 is provided in the central portion, but an injection port may be provided on one end side of the steel pipe 11 and an exhaust port provided on the other end side. .
[0022]
In this embodiment, nothing is provided on the outer peripheral surface of the steel pipe 11, but in order to reinforce the joint fitting 1 and improve adhesion to the concrete, a reinforcing rib along the axial direction is provided on the outer peripheral surface of the steel pipe 11. Alternatively, ring-shaped reinforcing ribs may be provided at predetermined intervals on a surface orthogonal to the axial direction.
Moreover, in the said Example, although the outer surface shape of the steel pipe 11 in the coupling metal fitting 1 was formed in the cylindrical shape, the prism which consists of polygons may be sufficient and an outer surface shape is not limited to this.
[0023]
The joining of the reinforcing bars 2 will be described. Inserting from both ends of the fitting 1 with the sealing material 3 attached to the opening of the steel pipe 11 until the tip of the reinforcing bars 2 comes into contact with the narrowed portion 16, and then providing the steel pipe 11. By injecting the organic grout material 12 from the injection port 15, the reinforcing bars are butt-joined.
[0024]
[Example 3]
FIG. 3 is another embodiment of the present invention. FIG. 3a is a horizontal sectional view in which the reinforcing bars 2 are joined in a superposed state by the joint fitting 1, and FIG. 3b is a vertical sectional view taken along the line C-C shown in FIG. is there.
[0025]
The joint fitting 1 is made of a steel pipe 11 as in the other embodiments, on the inner peripheral surface in the vicinity of both ends of the steel pipe 11, on the support protrusion 13 for fixing the reinforcing bar 2 and the sealing material 3, and on the inner peripheral surface of the opening A raised portion 14 is provided.
However, it may be made of a steel pipe obtained by simply cutting a long steel pipe without providing the support protrusion 13.
[0026]
An injection port 15 for injecting the organic grout material 12 into the steel pipe 11 is provided at a substantially central portion of the steel pipe 11. In this embodiment, the injection port 15 for injecting the organic grout material 12 is provided in the central portion, but the injection port is provided on one end side of the steel pipe 11 and the exhaust port is provided on the other end side. Good.
[0027]
In this embodiment, nothing is provided on the outer peripheral surface of the steel pipe 11, but in order to reinforce the joint fitting 1 and improve adhesion to the concrete, the outer peripheral surface of the steel pipe 11 is reinforced along the axial direction. Ring-shaped reinforcing ribs may be provided at predetermined intervals on the ribs or on a surface orthogonal to the axial direction.
In the said Example, although the outer surface shape of the steel pipe 11 in the coupling metal fitting 1 was made into the rectangle, an outer surface shape is not limited to this.
[0028]
The joining of the reinforcing bar 2 will be described. The reinforcing bar 2 is inserted from both ends of the joint fitting 1 with the sealing material 3 attached to the opening of the steel pipe 11, and the inlet is located at a position where the tip protrudes slightly from the opening on the opposite side. The organic grout material 12 is injected from 15 and bonded in a state where the reinforcing bars are overlapped by the curing of the organic grout material 12.
Further, a wedge hole for driving a wedge is provided in the substantially center of the steel pipe 11 and provided in the cylindrical body 11 at a position where the tip of the reinforcing bar 2 inserted from both ends of the joint fitting 1 slightly protrudes from the opening on the opposite side. The rebar 2 is fixed by driving a wedge from the wedge hole, and the organic grout material 12 is injected from the injection port 15 so that the rebars are joined together. The structure of the steel bar joint has been described above. In order to increase the adhesion between the organic grout material injected into the steel pipe and the fitting, the inner peripheral surface of the steel pipe is spiral, ring-shaped, or independent. It is possible to provide a projecting body which has an arbitrary shape and is slightly projected from the surface, and the projecting height is about 1 mm.
[0029]
【The invention's effect】
The invention of this application inserts rebars into a steel pipe and injects an organic grout material into the gap between the steel pipe and the rebar to cause the performance as a joint by the adhesive effect, and it is necessary to provide a special protrusion inside the joint. Therefore, the present invention provides a reinforcing bar joint that can easily absorb construction errors without using large-scale equipment.
[Brief description of the drawings]
FIG. 1 (a) is a horizontal sectional view of a fitting according to a first embodiment.
(B) It is a vertical sectional view of the joint fitting showing the first embodiment.
FIG. 2 (a) is a horizontal cross-sectional view of a fitting according to a second embodiment.
(B) It is a vertical sectional view of the joint fitting showing the second embodiment.
FIG. 3 (a) is a horizontal sectional view of a fitting according to a third embodiment.
(B) It is a vertical sectional view of the joint fitting showing the third embodiment.
FIG. 4A is a cross-sectional view of a joint fitting showing a conventional example.
(B) It is sectional drawing of the coupling metal fitting which shows a prior art example.
(C) It is sectional drawing of the coupling metal fitting which shows a prior art example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Joint metal fitting 11 ... Steel pipe 12 ... Organic grout material 13 ... Support projection 14 ... Raised part 15 ... Injection port 16 ... Reducing part 2 ... Reinforcing bar 3 ... Sealing material 101 ... Reinforcing bar 102, threaded portion 103, female screw 104, coupler 105, sleeve 106, grout injection hole 107, reinforcing bar 108, inner peripheral surface shape 109, fitting 110, wedge

Claims

A reinforcing bar joint for joining reinforcing bars together and relative direction of the reinforced concrete or steel reinforced concrete, in the center of the hand該継inlet, will attach the sealing member in the opening as the end portions, the both openings Both rebars inserted into the joint from the center are inserted up to the position where they contact the narrowed portion with the center portion narrowed down, and both opening sides are sealed with a sealing material. structure rebar joint, characterized in that formed by joining the mutual rebars by injecting filling the organic grout between both sealing material comprising the joint inside.

The structure of the reinforcing bar joint part according to claim 1, wherein a projecting body slightly projecting from the surface is provided on the inner peripheral surface of the joint.

The structure of the reinforcing bar joint part according to claim 2 , wherein the projecting body is formed in a spiral shape, a ring shape, or an arbitrary shape interspersed independently .

The structure of the reinforcing bar joint portion according to any one of claims 1 to 3, wherein ring-shaped ribs are provided at predetermined intervals on a surface orthogonal to the axial direction of the outer peripheral surface of the joint. .

The structure of the reinforcing bar joint part according to any one of claims 1 to 3, wherein a reinforcing rib is provided along an axial direction of the outer peripheral surface of the joint.

The structure of the reinforcing bar joint portion according to any one of claims 1 to 5, wherein the organic grout material is an epoxy resin or an acrylic resin .