JP2010185205A - Reinforcement joint and method for connecting reinforcement - Google Patents

Reinforcement joint and method for connecting reinforcement Download PDF

Info

Publication number
JP2010185205A
JP2010185205A JP2009029490A JP2009029490A JP2010185205A JP 2010185205 A JP2010185205 A JP 2010185205A JP 2009029490 A JP2009029490 A JP 2009029490A JP 2009029490 A JP2009029490 A JP 2009029490A JP 2010185205 A JP2010185205 A JP 2010185205A
Authority
JP
Japan
Prior art keywords
reinforcing bar
mortar
joint
welding
gap
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.)
Pending
Application number
JP2009029490A
Other languages
Japanese (ja)
Inventor
Satoshi Kojima
敏 小島
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.)
SANJO KINZOKU KK
Original Assignee
SANJO KINZOKU KK
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 SANJO KINZOKU KK filed Critical SANJO KINZOKU KK
Priority to JP2009029490A priority Critical patent/JP2010185205A/en
Publication of JP2010185205A publication Critical patent/JP2010185205A/en
Pending legal-status Critical Current

Links

Images

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reinforcement joint which achieves an improvement in workability in a factory and on a job site, reduction in filling mortar and manufacturing costs, and reduction in the length and weight of the reinforcement joint. <P>SOLUTION: The reinforcement joint 10 for serially connecting two reinforcements is formed in such an approximately tubular shape as to have a closed end 3, an opening end 2 and a tubular body portion 1. The reinforcement joint 10 includes: a mortar inlet 5, which communicates with a gap 4 between an inner surface of the reinforcement joint and the reinforcement inserted from the opening end, for infilling the mortar infilled into the gap; and a mortar-discharge checking opening 6 which communicates with the gap, and which enables checking of the infilling of the mortar into the gap. The reinforcement joint is fixed in such a way that an outer surface of the closed end and an end of the one reinforcement 7a are joined to each other by welding, while the other reinforcement 7b is inserted into the opening end, and the mortar is filled into the gap. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、鉄筋コンクリート造、鉄骨鉄筋コンクリート造、プレストレスコンクリート造及びプレキャスト造等において鉄筋を直列に接続するために使われ、主にプレキャスト部材の結合に用いられる鉄筋継手及び鉄筋接続方法に関するものである。   The present invention relates to a reinforcing bar joint and a reinforcing bar connecting method that are used for connecting reinforcing bars in series in reinforced concrete structures, steel reinforced concrete structures, prestressed concrete structures, precast structures, and the like, and mainly used for joining precast members. .

プレキャスト造のプレキャスト部材同士の結合において、鉄筋を接続するために、一般的にモルタル充填式継手が用いられている。図6に従来のモルタル充填式継手の断面図を示す。モルタル充填式継手20は、筒形状であって、その側部にはモルタル注入口21とモルタル排出確認口22を有している。そして、継手内に鉄筋23,24を挿入した後、無収縮モルタルを充填することで鉄筋を継手に固定し、鉄筋同士が接続されるものである。   Generally, a mortar-filled joint is used to connect reinforcing bars in precast-made precast members. FIG. 6 shows a sectional view of a conventional mortar filling joint. The mortar filling type joint 20 has a cylindrical shape, and has a mortar inlet 21 and a mortar discharge confirmation port 22 on its side. Then, after inserting the reinforcing bars 23 and 24 into the joint, the reinforcing bars are fixed to the joint by filling with non-shrink mortar, and the reinforcing bars are connected to each other.

プレキャスト造の場合、プレキャスト部材は工場や専用作成作業場で製造されるので、モルタル充填式継手20も、あらかじめ工場等でプレキャスト部材の内部に組み込まれる。継手の組み込み方としては、配筋された鉄筋の端部を一方の開口部から差し込み、他方の開口部は、他のプレキャスト部材と接合する面に連通するように型枠に固定される。このとき、継手の固定位置には正確性が要求されるため、型枠に固定するための部材が多く用いられることになる。なお、プレキャスト部材製造時に継手内部にコンクリートが侵入することを防ぐため、鉄筋を差し込んだ継手端部には、ノロ止め用のシール材25が設けられている。そして、継手の側部に設けられたモルタル注入口21及びモルタル排出確認口22は、プレキャスト部材の表面に連通させて、建設現場等でプレキャスト部材を結合する際に、モルタルを注入できるような構造にしておく。このような状態でコンクリート打設を行い、養生、解枠、仕上げ、検査までを工場等で行う。   In the case of precast construction, since the precast member is manufactured in a factory or a dedicated production workplace, the mortar filling joint 20 is also incorporated in the precast member in advance in the factory or the like. As a method for assembling the joint, the end of the rebar is inserted through one opening, and the other opening is fixed to the mold so as to communicate with the surface to be joined with the other precast member. At this time, since accuracy is required at the fixing position of the joint, many members for fixing to the mold are used. In addition, in order to prevent the concrete from entering the inside of the joint when the precast member is manufactured, a seal member 25 for stopping the joint is provided at the end of the joint into which the reinforcing bar is inserted. The mortar inlet 21 and the mortar discharge confirmation port 22 provided on the side of the joint communicate with the surface of the precast member so that the mortar can be injected when the precast member is joined at a construction site or the like. Keep it. Concrete is placed in such a state, and curing, unpacking, finishing, and inspection are performed at a factory or the like.

こうして製造されたプレキャスト部材は、建設現場や構造物組立現場へ運搬され、プレキャスト部材同士を結合して構造物となる。プレキャスト部材同士の結合の方法は、プレキャスト部材の内部に設置されたモルタル充填式継手20の開口部に、他のプレキャスト部材から突出している鉄筋を挿入し、プレキャスト部材の表面に連通させた注入口からモルタルを注入し、モルタル排出確認口22からモルタルが排出されるまで注入を続ける。そうして、注入したモルタルが固まることで、モルタル充填式継手20により2本の鉄筋が直列に接続され、プレキャスト部材同士も結合される。   The precast member manufactured in this way is transported to a construction site or a structure assembly site, and the precast members are joined together to form a structure. The method for joining the precast members is such that the reinforcing bar protruding from the other precast member is inserted into the opening of the mortar-filled joint 20 installed inside the precast member and communicated with the surface of the precast member. The mortar is injected from the mortar, and the injection is continued until the mortar is discharged from the mortar discharge confirmation port 22. Then, when the injected mortar hardens, the two reinforcing bars are connected in series by the mortar filling type joint 20, and the precast members are also joined together.

しかし、このようなモルタル充填式継手の場合、両端から鉄筋を差し込んだ継手にモルタルを注入するため、継手を型枠に固定する作業や現場でのモルタル注入作業が煩雑であり、モルタルの量も多くなるといった問題を有している。そこで、作業性の向上やモルタル量を減らすことを目的として、実公昭55−44101号公報(特許文献1)、実開昭62−203318号公報(特許文献2)、特開2008−63730号公報(特許文献3)等に記載されているような、ねじ部を設けた機械式継手が開発されている。   However, in the case of such a mortar filling type joint, since mortar is injected into the joint with reinforcing bars inserted from both ends, the work of fixing the joint to the mold and the mortar injection work on site are complicated, and the amount of mortar is also large. It has a problem of increasing. Therefore, for the purpose of improving workability and reducing the amount of mortar, Japanese Utility Model Publication No. 55-44101 (Patent Document 1), Japanese Utility Model Application Publication No. 62-203318 (Patent Document 2), and Japanese Patent Application Laid-Open No. 2008-63730. A mechanical joint provided with a thread portion as described in (Patent Document 3) and the like has been developed.

特許文献1〜3に記載されているような継手は、一般に鋳造製であり、筒状に形成された継手の端部内側に、雌ねじを形成している。雌ねじの形成を機械加工により行うと、加工時間が長く、コストが大変高くなる。中子を用いて形成したとしても、精度の高い雌ねじを鋳造製で製作することは、高精度の造型機及び中子、高強度の材質などが必要で、コストが高くなるという問題を抱えている。また、特許文献3に記載の鉄筋継手では、雄ねじ部分が摩擦圧接により鉄筋の端面に接合され、ねじ部分にもモルタルが侵入することによって、ねじ部分の固定を強固にするという効果が得られている。しかし、継手の端部に雌ねじを形成しているので、コスト高の原因を取り除くことはできず、また、継手の短縮や軽量化にもあまり役立っていない。   The joints described in Patent Documents 1 to 3 are generally made of cast, and have a female screw formed inside the end of the joint formed in a cylindrical shape. When the internal thread is formed by machining, the processing time is long and the cost is very high. Even if it is formed using a core, manufacturing a high-precision female screw by casting requires a high-precision molding machine and core, high-strength material, etc. Yes. Further, in the reinforcing bar joint described in Patent Document 3, the effect of strengthening the fixing of the screw part is obtained by joining the male screw part to the end face of the reinforcing bar by friction welding and mortar entering the screw part. Yes. However, since the female thread is formed at the end of the joint, the cause of the high cost cannot be removed, and the joint is not very useful for shortening or reducing the weight.

実公昭55−44101号公報Japanese Utility Model Publication No. 55-44101 実開昭62−203318号公報Japanese Utility Model Publication No. 62-203318 特開2008−63730号公報JP 2008-63730 A

本発明は、斯かる実情に鑑み、工場及び現場での作業性の向上、充填モルタル及び製造コストの削減、鉄筋継手の短尺化及び軽量化を実現する鉄筋継手を提供することを目的としている。   The present invention has been made in view of such circumstances, and an object of the present invention is to provide a reinforcing bar joint that realizes improvement in workability in a factory and a field, reduction of filling mortar and manufacturing cost, shortening and weight reduction of the reinforcing bar joint.

本発明の鉄筋継手は、二本の鉄筋を直列に接続する鉄筋継手であって、鉄筋継手の形状は閉鎖端部、開口端部及び筒体部を有する略筒形状であり、鉄筋継手の内面と前記開口端部から挿入した鉄筋との間隙に連通し、間隙にモルタルを充填するためのモルタル注入口と、前記間隙に連通し、間隙にモルタルが充填されたことを確認できるモルタル排出確認口と、を有し、閉鎖端部の外面と一方の鉄筋端部が溶接で接合され、前記開口端部には他方の鉄筋を挿入後、モルタルを充填することによって固定されることを特徴とするものである。   The reinforcing bar joint of the present invention is a reinforcing bar joint in which two reinforcing bars are connected in series, and the shape of the reinforcing bar joint is a substantially cylindrical shape having a closed end part, an open end part and a cylindrical body part, and the inner surface of the reinforcing bar joint And a mortar inlet for filling the gap with mortar, and a mortar discharge confirmation port communicating with the gap and confirming that the gap is filled with mortar And the outer surface of the closed end and one end of the reinforcing bar are joined by welding, and the opening end is fixed by filling the mortar after inserting the other reinforcing bar. Is.

ここで、鉄筋継手は、鋳造製にすることができる。また、閉鎖端部が、別途用意された筒体閉鎖部材を前記筒体部の一端に溶接することにより形成される構成にしたり、閉鎖端部の外面と鉄筋端部との溶接、及び/又は、筒体閉鎖部材と筒体部との溶接が、摩擦圧接であるという構成にしても良い。   Here, the reinforcing bar joint can be made of casting. The closed end may be formed by welding a separately prepared cylindrical closing member to one end of the cylindrical portion, welding the outer surface of the closed end and the reinforcing bar end, and / or The welding of the cylindrical body closing member and the cylindrical body portion may be a friction welding.

また、二本の鉄筋を直列に接続する鉄筋接続方法の発明として、閉鎖端部、開口端部及び筒体部を有する略筒形状の鉄筋継手に対し、閉鎖端部の外面と一方の鉄筋端部を溶接で接合する工程と、開口端部に他方の鉄筋を挿入し、モルタルを充填して固定する工程と、を有することを特徴とすることができる。なお、閉鎖端部の外面と一方の鉄筋端部を溶接で接合する工程が、摩擦圧接で接合する工程にしても良い。   Further, as an invention of a reinforcing bar connecting method for connecting two reinforcing bars in series, with respect to a substantially cylindrical reinforcing bar joint having a closed end part, an open end part and a cylindrical part, the outer surface of the closed end part and one reinforcing bar end A step of joining the parts by welding, and a step of inserting the other reinforcing bar into the opening end and filling and fixing the mortar. In addition, the process of joining the outer surface of a closed end part and one reinforcing bar end part by welding may be made into the process joined by friction welding.

本発明の鉄筋継手によると、従来のモルタル充填式継手と比べると、モルタルの量が片側だけになるため、大幅な充填量の削減になり、コスト面で有利なだけでなく、現場での作業性も向上するという効果を奏する。また、鉄筋継手長さを短くすることができ、軽量化を図ることもできる。   According to the reinforcing bar joint of the present invention, compared with the conventional mortar filling type joint, the amount of mortar is only on one side, so that the amount of filling is greatly reduced, which is not only advantageous in terms of cost, but also on-site work The effect is also improved. Further, the length of the reinforcing bar joint can be shortened, and the weight can be reduced.

また、ねじ部を有する継手と比べても、鉄筋継手に雌ねじを形成する必要はないため、製作の時間やコストの削減になり、ねじ部分の長さ分だけ継手長さを短くすることができる。さらに、溶接により一体化しているため、部品点数を減らして簡素化できるという効果も奏している。   In addition, compared to a joint having a threaded portion, it is not necessary to form a female thread in the reinforcing bar joint, so the manufacturing time and cost can be reduced, and the joint length can be shortened by the length of the threaded portion. . Furthermore, since they are integrated by welding, there is an effect that the number of parts can be reduced and simplified.

実施例1の鉄筋継手を示す分解断面図である。1 is an exploded cross-sectional view showing a reinforcing bar joint of Example 1. FIG. 実施例1の鉄筋継手の閉鎖端部に異形鉄筋を溶接し、開口端部から異形鉄筋を挿入した状態を示す断面図である。It is sectional drawing which shows the state which welded the deformed reinforcing bar to the closed end part of the reinforcing bar joint of Example 1, and inserted the deformed reinforcing bar from the opening end part. 実施例2の鉄筋継手を示す分解断面図である。It is an exploded sectional view showing the reinforcing bar joint of Example 2. 実施例2の筒体閉鎖部材を改良した鉄筋継手を示す分解断面図である。It is an exploded sectional view showing a reinforcing bar joint which improved a cylinder closure member of Example 2. 閉鎖端部が筒体部を加工して形成された鉄筋継手を示す断面図である。It is sectional drawing which shows the reinforcing bar joint by which the closed end part processed and processed the cylindrical part. 従来のモルタル充填式継手の断面図である。It is sectional drawing of the conventional mortar filling type joint.

以下、本発明の実施の形態を添付図面を参照して説明する。   Embodiments of the present invention will be described below with reference to the accompanying drawings.

図1は、実施例1の鉄筋継手を示す分解断面図である。図に示すように、本発明は二つの鉄筋7a、7bを直列に接続する鉄筋継手10である。鉄筋継手10の形状は、閉鎖端部3、開口端部2及び筒体部1を有する略筒形状である。側部には、鉄筋継手10の内面と開口端部2から挿入した鉄筋7bとの間隙4にモルタルを充填するためのモルタル注入口5と、間隙4にモルタルが充填されたときに間隙の空気が排出され、その後、モルタルが排出されることで、モルタルが充填されたことを確認できるモルタル排出確認口6とを有する。   1 is an exploded cross-sectional view showing a reinforcing bar joint of Example 1. FIG. As shown in the figure, the present invention is a reinforcing bar joint 10 that connects two reinforcing bars 7a and 7b in series. The shape of the reinforcing bar joint 10 is a substantially cylindrical shape having a closed end portion 3, an open end portion 2, and a cylindrical body portion 1. At the side, a mortar inlet 5 for filling the gap 4 between the inner surface of the reinforcing bar joint 10 and the reinforcing bar 7b inserted from the open end 2 and the air in the gap when the gap 4 is filled with mortar. Is discharged, and then the mortar is discharged, so that the mortar discharge confirmation port 6 that can confirm that the mortar is filled is provided.

また、筒体部1の内壁面には、鉄筋継手10の軸方向と直交する複数の突条8を図示している。突条8の形状は、図示したものに拘ることなく他の形状の突条や突起であっても良く、また、場合によっては、設けないときもある。つまり、内部の間隙4に充填されたモルタルが固化した際に、所定の引張力に耐えられる構造であれば良い。なお、鉄筋継手10の素材は、鋳造製を想定しているが、用途によっては、ステンレス製や普通鋼で製造することもできる。   In addition, a plurality of protrusions 8 perpendicular to the axial direction of the reinforcing bar joint 10 are illustrated on the inner wall surface of the cylindrical body portion 1. The shape of the ridge 8 is not limited to that shown in the figure, and may be a ridge or protrusion having another shape, and may not be provided depending on circumstances. That is, any structure that can withstand a predetermined tensile force when the mortar filled in the internal gap 4 is solidified may be used. In addition, although the raw material of the rebar joint 10 assumes manufacture made by casting, it can also manufacture by stainless steel or a normal steel depending on a use.

図2は、実施例1の鉄筋継手の閉鎖端部に異形鉄筋を溶接し、開口端部から異形鉄筋を挿入した状態を示す断面図である。従来、鋳造製の鉄筋継手に鉄筋を溶接するという発想はなかった。さらに、鋼管、鋼板などで造られた鉄筋継手であっても、一端部を鉄筋と一体化したものは、存在しなかった。それに対し、本発明では、鉄筋継手10の閉鎖端部3の外面と鉄筋7aの端部を溶接することとしている。このような溶接は、異種金属間の溶接が接続不能であったことから敬遠されてきたが、摩擦圧接を使うことにより接続可能となった。また、強度面からは、摩擦圧接が望ましいが、鉄筋継手10の素材によっては、他の溶接法で接続することもできる。こうして、直列に接続する鉄筋継手の接続強度が向上し、鉄筋と同程度の高強度の接続力を備えた鉄筋継手が得られるようになった。なお、摩擦圧接等の溶接は工場にて行われるため、品質管理ができ、十分な強度を有する溶接を行うことができると考えられる。   FIG. 2 is a cross-sectional view illustrating a state in which a deformed reinforcing bar is welded to the closed end of the reinforcing bar joint of Example 1 and the deformed reinforcing bar is inserted from the opening end. Conventionally, there has been no idea of welding reinforcing bars to cast reinforcing bar joints. Further, even a rebar joint made of a steel pipe, a steel plate or the like has not been integrated with one end of the rebar. On the other hand, in the present invention, the outer surface of the closed end 3 of the reinforcing bar joint 10 and the end of the reinforcing bar 7a are welded. Such welding has been avoided because welding between dissimilar metals cannot be connected, but has become possible to connect by using friction welding. From the viewpoint of strength, friction welding is desirable, but depending on the material of the reinforced joint 10, it can be connected by other welding methods. Thus, the connection strength of the reinforcing bar joints connected in series has been improved, and a reinforcing bar joint having a high strength connection force similar to that of the reinforcing bars can be obtained. In addition, since welding, such as friction welding, is performed in a factory, it is thought that quality control can be performed and welding with sufficient intensity | strength can be performed.

次に、開口端部側の接続であるが、これは、従来の接続方法と同様である。つまり、開口端部2から鉄筋7bが挿入され、筒体部1の内壁面と鉄筋7bの外周との間隙4にモルタルを注入することによって、固定するものである。モルタルは、間隙4に連通するモルタル注入口5を通して充填される。そして、モルタルが充填されたことをモルタル排出確認口6から確認できる。ここでモルタルの種類は、用途に合わせて高品質のグラウトやエポキシ樹脂としても良い。   Next, the connection on the opening end side is the same as the conventional connection method. That is, the reinforcing bar 7b is inserted from the opening end 2 and fixed by injecting mortar into the gap 4 between the inner wall surface of the cylindrical part 1 and the outer periphery of the reinforcing bar 7b. The mortar is filled through a mortar inlet 5 that communicates with the gap 4. And it can confirm from the mortar discharge | emission confirmation opening 6 that the mortar was filled. Here, the type of mortar may be high-quality grout or epoxy resin according to the application.

このような構成にした結果、モルタルは、片方の鉄筋を固定するためだけに使われるので、大幅な充填量の削減になり、コスト面で有利なだけでなく、現場での作業性も向上する。また、鉄筋継手長さを短尺化でき、軽量化を図ることができる。さらに、溶接により一体化しているため、従来のようなノロ止め用のシール材が不要であり、また、継手を型枠に固定するための部材も大幅に減らすことができるので、部品点数を減らして簡素化することができる。そして、鉄筋と継手の溶接は工場にて行われるので、品質の安定性が保証される。なお、ねじ部を設けた継手と比べても、ねじ部分が無いので、それだけ短尺化や軽量化ができ、製造も容易である。さらに、ねじ鉄筋を用いる必要がないので、コスト削減にもなる。   As a result of this configuration, mortar is used only to fix one rebar, which greatly reduces the amount of filling and is not only cost-effective, but also improves on-site workability. . Further, the length of the reinforcing bar joint can be shortened, and the weight can be reduced. In addition, since it is integrated by welding, a conventional sealing material is not required, and the number of parts for fixing the joint to the formwork can be greatly reduced, reducing the number of parts. Can be simplified. And since welding of a reinforcing bar and a joint is performed at a factory, stability of quality is guaranteed. In addition, even if it compares with the coupling | joint which provided the thread part, since there is no thread part, it can shorten and lighten that much, and manufacture is also easy. Furthermore, since it is not necessary to use screw reinforcing bars, the cost can be reduced.

図3は、実施例2の鉄筋継手を示す分解断面図である。ここでは、閉鎖端部は、別途用意した筒体閉鎖部材13を筒体部1の一端に溶接することによって形成される。閉鎖端部以外の部分は、実施例1の鉄筋継手と同様の形状とすることができる。なお、筒体閉鎖部材13と筒体部1あるいは鉄筋7aとは、実施例1と同様、摩擦圧接により接続するのが強度的に望ましく、また作業性も良い。筒体部1や筒体閉鎖部材13は、鋳造製に拘るものでなく、普通鋼やステンレスなどの金属製とすることができるので、製造上の難易度も低く、精度の高い鉄筋継手が得られる上に低コストで製造することができる。   FIG. 3 is an exploded cross-sectional view illustrating the reinforcing bar joint according to the second embodiment. Here, the closed end portion is formed by welding a separately prepared cylindrical body closing member 13 to one end of the cylindrical body portion 1. Portions other than the closed end can have the same shape as the reinforcing bar joint of the first embodiment. Note that, as in the first embodiment, it is desirable in terms of strength that the cylindrical body closing member 13 and the cylindrical body portion 1 or the reinforcing bar 7a are connected by friction welding, and workability is also good. The cylindrical body 1 and the cylindrical body closing member 13 are not limited to casting, and can be made of metal such as ordinary steel or stainless steel. Therefore, the manufacturing difficulty is low, and a highly accurate reinforced joint is obtained. And can be manufactured at low cost.

図4は、実施例2の筒体閉鎖部材を改良した鉄筋継手を示す分解断面図である。ここでも、閉鎖端部以外の部分は、実施例1の鉄筋継手と同様の形状とすることができる。図4に示す実施例は、小径の鉄筋と大径の鉄筋を接続するときに使いやすいように、筒体閉鎖部材14の一端側を大径とし他端側を小径としたものである。このように筒体閉鎖部材14の形状は、必要にあわせて任意に選択することができる。   FIG. 4 is an exploded cross-sectional view showing a reinforcing bar joint obtained by improving the cylindrical member closing member of the second embodiment. Here too, the portions other than the closed end portion can have the same shape as the reinforcing bar joint of the first embodiment. In the embodiment shown in FIG. 4, one end side of the cylinder closing member 14 has a large diameter and the other end side has a small diameter so that it is easy to use when connecting a small diameter reinforcing bar and a large diameter reinforcing bar. Thus, the shape of the cylinder closing member 14 can be arbitrarily selected according to need.

図5は、閉鎖端部が筒体部を加工して形成された鉄筋継手を示す断面図である。鉄筋継手を普通鋼やステンレスなどの金属製としたとき、鉄筋7aを接続する閉鎖端部として実施例2のような筒体閉鎖部材を用いるのではなく、筒体部1の端部付近を加工することにより、閉鎖端部を形成したものである。鋼管は、入手や加工が容易であることから、コストを削減することができると考えられる。また、鉄筋との接続は、摩擦圧接が強度的・作業的に適しているが、それ以外の溶接でも可能である。   FIG. 5 is a cross-sectional view showing a reinforcing bar joint in which a closed end portion is formed by processing a cylindrical body portion. When the reinforcing bar joint is made of metal such as ordinary steel or stainless steel, the cylindrical member is not used as the closed end part for connecting the reinforcing bar 7a, but the end part of the cylindrical part 1 is processed. By doing so, a closed end portion is formed. Since steel pipes are easy to obtain and process, it is thought that costs can be reduced. In addition, friction welding is suitable for strength and work for connection with the reinforcing bar, but other welding is also possible.

以上、図1〜図5を用いて実施例を説明してきたとおり、本発明の鉄筋継手を用いると、充填するモルタルの量を削減できるので、コスト面で有利なだけでなく、現場での作業性も向上することができようになった。そして、本鉄筋継手は、強固でありながらも、短尺化、軽量化及び簡素化を図ることができるものである。   As described above with reference to FIGS. 1 to 5, when the reinforcing bar joint of the present invention is used, the amount of mortar to be filled can be reduced, which is not only advantageous in cost but also on-site work. It is now possible to improve the performance. And although this rebar joint is strong, it can attain shortening, weight reduction, and simplification.

1 筒体部
2 開口端部
3 閉鎖端部
4 間隙
5 モルタル注入口
6 モルタル排出確認口
7a,7b 鉄筋
10 鉄筋継手
13,14 筒体閉鎖部材
DESCRIPTION OF SYMBOLS 1 Cylindrical part 2 Open end 3 Closed end 4 Gap 5 Mortar injection port 6 Mortar discharge confirmation port 7a, 7b Rebar 10 Reinforcement joint 13, 14 Cylindrical closure member

Claims (6)

二本の鉄筋を直列に接続する鉄筋継手であって、
前記鉄筋継手の形状は閉鎖端部、開口端部及び筒体部を有する略筒形状であり、
前記鉄筋継手の内面と前記開口端部から挿入した鉄筋との間隙に連通し、前記間隙にモルタルを充填するためのモルタル注入口と、
前記間隙に連通し、前記間隙にモルタルが充填されたことを確認できるモルタル排出確認口と、を有し、
前記閉鎖端部の外面と一方の鉄筋端部が溶接で接合され、前記開口端部には他方の鉄筋を挿入後、モルタルを充填することによって固定されることを特徴とする鉄筋継手。
A rebar joint that connects two rebars in series,
The shape of the reinforcing bar joint is a substantially cylindrical shape having a closed end portion, an open end portion and a cylindrical body portion,
A mortar inlet for communicating with the gap between the inner surface of the reinforcing bar joint and the reinforcing bar inserted from the opening end, and filling the gap with mortar;
A mortar discharge confirmation port that communicates with the gap and can confirm that the gap is filled with mortar,
An outer surface of the closed end is joined to one end of the reinforcing bar by welding, and the opening end is fixed by filling the mortar after inserting the other reinforcing bar.
前記鉄筋継手が、鋳造製であることを特徴とする請求項1に記載の鉄筋継手。   The reinforcing bar joint according to claim 1, wherein the reinforcing bar joint is made of cast metal. 前記閉鎖端部が、別途用意された筒体閉鎖部材を前記筒体部の一端に溶接することにより形成されていることを特徴とする請求項1又は請求項2に記載の鉄筋継手。   The reinforcing bar joint according to claim 1 or 2, wherein the closed end portion is formed by welding a separately prepared cylindrical body closing member to one end of the cylindrical body portion. 前記閉鎖端部の外面と鉄筋端部との溶接、及び/又は、前記筒体閉鎖部材と前記筒体部との溶接が、摩擦圧接であることを特徴とする請求項1乃至請求項3のうち1項に記載の鉄筋継手。   The welding of the outer surface of the said closed end part and a reinforcing bar end part and / or the welding of the said cylindrical body closing member and the said cylindrical body part are friction welding, The Claim 1 thru | or 3 characterized by the above-mentioned. Among them, the reinforcing bar joint according to item 1. 二本の鉄筋を直列に接続する鉄筋接続方法であって、
閉鎖端部、開口端部及び筒体部を有する略筒形状の鉄筋継手に対し、
前記閉鎖端部の外面と一方の鉄筋端部を溶接で接合する工程と、
前記開口端部に他方の鉄筋を挿入し、モルタルを充填して固定する工程と、
を有することを特徴とする鉄筋接続方法。
A rebar connection method for connecting two rebars in series,
For a substantially cylindrical rebar joint having a closed end, an open end and a cylindrical body,
Joining the outer surface of the closed end and one end of the reinforcing bar by welding;
Inserting the other rebar into the opening end, filling and fixing mortar, and
Reinforcing bar connection method characterized by comprising:
前記閉鎖端部の外面と一方の鉄筋端部を溶接で接合する工程が、摩擦圧接で接合する工程であることを特徴とする請求項5に記載の鉄筋接続方法。   6. The reinforcing bar connecting method according to claim 5, wherein the step of joining the outer surface of the closed end and one of the reinforcing bar ends by welding is a step of joining by friction welding.
JP2009029490A 2009-02-12 2009-02-12 Reinforcement joint and method for connecting reinforcement Pending JP2010185205A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009029490A JP2010185205A (en) 2009-02-12 2009-02-12 Reinforcement joint and method for connecting reinforcement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009029490A JP2010185205A (en) 2009-02-12 2009-02-12 Reinforcement joint and method for connecting reinforcement

Publications (1)

Publication Number Publication Date
JP2010185205A true JP2010185205A (en) 2010-08-26

Family

ID=42766024

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009029490A Pending JP2010185205A (en) 2009-02-12 2009-02-12 Reinforcement joint and method for connecting reinforcement

Country Status (1)

Country Link
JP (1) JP2010185205A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105064619A (en) * 2015-08-02 2015-11-18 长安大学 Rebar sleeve grouting connection member for prefabricated assembled type concrete component and connection method
JP2017043884A (en) * 2015-08-24 2017-03-02 株式会社大林組 Joint structure of segment
JP2017141583A (en) * 2016-02-09 2017-08-17 株式会社伊藤製鐵所 Joint structure and construction method for the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105064619A (en) * 2015-08-02 2015-11-18 长安大学 Rebar sleeve grouting connection member for prefabricated assembled type concrete component and connection method
JP2017043884A (en) * 2015-08-24 2017-03-02 株式会社大林組 Joint structure of segment
JP2017141583A (en) * 2016-02-09 2017-08-17 株式会社伊藤製鐵所 Joint structure and construction method for the same

Similar Documents

Publication Publication Date Title
KR100510254B1 (en) Precasting method of spliced prestressed concrete girder segment and the segment precasted by above method
JP5132005B2 (en) Earthquake-resistant reinforced concrete watertight pipe rod and method for manufacturing the same
CN103216044A (en) Moisture permeation and water proofing Cement grouting steel bar connecting structure of precast concrete unit
JP2005518487A (en) High strength pipe coupler with grout injection
KR101938658B1 (en) Conection structure of precast panel for large-size double-wall
CN202430831U (en) Cement grouting steel bar connecting structure of precast concrete unit
JP4852378B2 (en) Reinforced joint half sleeve, joint using the half sleeve, and precast reinforced concrete molded product
CN102116075B (en) Novel joint prepared from cement grout and steel bars
JP2010185205A (en) Reinforcement joint and method for connecting reinforcement
JP2018178365A (en) Reinforcement joint coupler
JP4272572B2 (en) PC member joining method and PC member
JP4852377B2 (en) Reinforcing bar joint sleeve, joint using the sleeve, and reinforcing bar structure
JP5213249B2 (en) Pile head structure of precast concrete pile and pile head formation method
JP2019082027A (en) Reinforced joint, reinforced steel assembly and precast reinforced concrete body
JPH11269871A (en) Composite pile for foundation pile
JP5717983B2 (en) Member joining structure, building, and member joining method
KR101270502B1 (en) Precast concrete for member of framework with none sleeve
JP5081040B2 (en) Reinforcing bar connection structure and joint for reinforcing bar connection
JP6590571B2 (en) Precast concrete beam end joint structure and precast concrete beam column frame
JP2006200270A (en) Joining structure and joining method
CN105781027A (en) Grouting sleeve and prefabricated member
JP2013238037A (en) Reinforcement joint and precast concrete member
JP6921413B2 (en) Reinforcing bar joints and rebar assemblies, as well as precast reinforced concrete bodies
CN217480428U (en) Concrete prefabricated part connecting assembly
JP6738954B1 (en) Precast concrete parts