JP5081040B2 - Reinforcing bar connection structure and joint for reinforcing bar connection - Google Patents

Reinforcing bar connection structure and joint for reinforcing bar connection Download PDF

Info

Publication number
JP5081040B2
JP5081040B2 JP2008096082A JP2008096082A JP5081040B2 JP 5081040 B2 JP5081040 B2 JP 5081040B2 JP 2008096082 A JP2008096082 A JP 2008096082A JP 2008096082 A JP2008096082 A JP 2008096082A JP 5081040 B2 JP5081040 B2 JP 5081040B2
Authority
JP
Japan
Prior art keywords
joint
reinforcing bar
grout
hole
female
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.)
Expired - Fee Related
Application number
JP2008096082A
Other languages
Japanese (ja)
Other versions
JP2009249847A (en
Inventor
博 今井
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.)
Tokyo Tekko Co Ltd
Original Assignee
Tokyo Tekko Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tokyo Tekko Co Ltd filed Critical Tokyo Tekko Co Ltd
Priority to JP2008096082A priority Critical patent/JP5081040B2/en
Publication of JP2009249847A publication Critical patent/JP2009249847A/en
Application granted granted Critical
Publication of JP5081040B2 publication Critical patent/JP5081040B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Reinforcement Elements For Buildings (AREA)

Description

本発明は、２本の異形鉄筋をほぼ同軸をなして連結する構造、及びこの連結構造に用いられる継手に関する。   The present invention relates to a structure in which two deformed reinforcing bars are connected substantially coaxially, and a joint used in this connection structure.

第１、第２の２本の異形鉄筋を連結する構造として、プレキャストコンクリート製柱（ＰＣ柱）を下方構成部材に接合する場合に用いられる連結構造がある。
ＰＣ柱は、複数の筒状継手と複数の第１鉄筋をコンクリートに埋め込むことにより構成されている。これら継手はコンクリートの下端部に配置され、その内部空間の上部には第１鉄筋の端部が入り込んでいる。継手下端の鉄筋挿入口はコンクリートの下端面に開口している。継手の上下端部には同方向を向く第１、第２の穴が形成されており、これら第１、第２の穴は、コンクリート壁面に開口する第１、第２通路にそれぞれ連なっている。 As a structure for connecting the first and second deformed reinforcing bars, there is a connection structure used when a precast concrete column (PC column) is joined to a lower component.
The PC pillar is configured by embedding a plurality of cylindrical joints and a plurality of first reinforcing bars in concrete. These joints are arrange | positioned at the lower end part of concrete, and the edge part of the 1st reinforcing bar has entered into the upper part of the interior space. The reinforcing bar insertion opening at the lower end of the joint is open to the lower end surface of the concrete. First and second holes facing in the same direction are formed in the upper and lower ends of the joint, and these first and second holes are respectively connected to first and second passages opened in the concrete wall surface. .

上記ＰＣ柱を下方構成部材に建て込む際には、下方構成部材から突出する第２鉄筋をＰＣ柱の継手の内部空間の下部に挿入するようにして、ＰＣ柱を下方構成部材に載せ、この状態で、上記第２通路からグラウトを注入することにより、継手にグラウトを充填するようになっている。
上記のようにして、ＰＣ柱の第１鉄筋と下方構成部材の第２鉄筋が、継手およびグラウトを介して連結されるようになっている。 When the PC column is built into the lower component, the second reinforcing bar protruding from the lower component is inserted into the lower part of the internal space of the joint of the PC column, and the PC column is placed on the lower component. In the state, the grout is filled from the second passage to fill the joint with grout.
As described above, the first rebar of the PC pillar and the second rebar of the lower component are connected via the joint and the grout.

特許文献１では、ＰＣ柱は次のようにして製造される。上記継手の一端部内周に環状のシール材が取り付けられており、上記第１鉄筋の一端部がこのシール材を挿通して継手の内部空間の半分まで入り込んだ状態で、上記コンクリートを打設する。
特許文献１のＰＣ柱の接合構造では、第１、第２鉄筋と継手はグラウト材の付着だけに依存して連結されている。 In Patent Document 1, the PC pillar is manufactured as follows. An annular sealing material is attached to the inner periphery of one end of the joint, and the concrete is placed in a state in which one end of the first reinforcing bar is inserted through the sealing material to half of the inner space of the joint. .
In the joint structure of PC pillars of Patent Document 1, the first and second reinforcing bars and the joint are connected depending only on the adhesion of the grout material.

特許文献２に示すＰＣ柱の接合構造では、第１、第２の鉄筋はねじ鉄筋からなる。継手は上端部に小径の雌ねじ部を有し、この雌ねじ部に第１鉄筋の端部を螺合するようになっている。継手の下端部には上記雌ねじ部より径の大きな鉄筋挿入口が形成されており、第２鉄筋の上端部をこの鉄筋挿入口から挿入し、上記雌ねじ部の近傍まで入り込ませている。グラウト充填に関しては特許文献１と同様である。   In the PC column joint structure shown in Patent Document 2, the first and second reinforcing bars are screw reinforcing bars. The joint has a small-diameter female thread at the upper end, and the end of the first rebar is screwed into the female thread. A rebar insertion port having a diameter larger than that of the female screw portion is formed at the lower end portion of the joint, and the upper end portion of the second rebar is inserted from the rebar insertion port and is inserted to the vicinity of the female screw portion. The grout filling is the same as in Patent Document 1.

他方、ＰＣ柱ではなく梁主筋同士を連結する場合には、特許文献３，４に開示されている連結構造が用いられる。詳述すると、継手の両端部内周にシール部材を装着する。次に、第１，第２鉄筋を、このシール部材を挿通するようにして、継手の内部空間に挿入する。継手の両端部周壁には上記シール材に隣接して互いに同方向を向く第１、第２の穴が形成されており、第１穴からグラウトを注入し、第２穴からグラウトを排出させ、この排出によりグラウト充填を確認するようになっている。
特開２００３−１１３６４４号公報 特開２００７−２３６２９号公報 特開平９−１４４２１３号公報 特開平９−１８９０９７号公報 On the other hand, when connecting the beam main bars instead of the PC pillars, the connection structure disclosed in Patent Documents 3 and 4 is used. More specifically, seal members are attached to the inner periphery of both ends of the joint. Next, the first and second reinforcing bars are inserted into the internal space of the joint so as to pass through the seal member. First and second holes facing the same direction are formed adjacent to the sealing material at both end peripheral walls of the joint, injecting grout from the first hole and discharging grout from the second hole, This discharge confirms grout filling.
JP 2003-113644 A JP 2007-23629 A JP-A-9-144213 Japanese Patent Laid-Open No. 9-189097

特許文献１，３，４の鉄筋連結構造では、２本の鉄筋と継手の連結をグラウトにのみ依存するので、グラウトが充填される継手の内部空間を長くしてグラウトと鉄筋、継手との付着強度を確保する必要があり、その結果、継手が長く重くなり、コストの増大を招く。   In the reinforcing bar connecting structure of Patent Documents 1, 3, and 4, the connection between the two reinforcing bars and the joint depends only on the grout, so that the inner space of the joint filled with the grout is lengthened and the grout, the reinforcing bar, and the joint are attached. It is necessary to ensure the strength, and as a result, the joint becomes long and heavy, resulting in an increase in cost.

特許文献２では、第１鉄筋と継手がねじ結合により連結され、第２鉄筋だけが継手とグラウトを介して連結されるため、特許文献１等に比べて継手の長さを短くできる。しかし、上記第１鉄筋と継手とはねじ結合だけで連結するため、ねじ結合を強固にすることが求められる。そのため、雌ねじ部のピッチ数を多くする必要があり、またロックナットによる締め付けや雌ねじ部と第１鉄筋との間への充填材の注入等が必要であり、特許文献１に比べてコスト低減を図ることができない。   In Patent Document 2, since the first reinforcing bar and the joint are connected by screw connection, and only the second reinforcing bar is connected through the joint and grout, the length of the joint can be shortened compared to Patent Document 1 and the like. However, since the first rebar and the joint are connected only by screw connection, it is required to strengthen the screw connection. For this reason, it is necessary to increase the number of pitches of the female thread part, and it is necessary to tighten with a lock nut or to inject a filler between the female thread part and the first rebar. I can't plan.

また、特許文献２では、上記第１，第２穴をＰＣ柱壁面に向ける必要がある。しかし、第１鉄筋と継手は上記のように固定されており、ＰＣ柱製造工程においてコンクリート打設前に継手の角度調節をすることができず、第１，第２穴の位置調節ができないので不便である。また、第１鉄筋と継手がコンクリート打設前に固定されていない場合でも、継手の角度調節をすると、継手の雌ねじ部と第１鉄筋との螺合長さが変化し、連結強度に悪影響を与えてしまう。   Moreover, in patent document 2, it is necessary to orient | assign the said 1st, 2nd hole to PC pillar wall surface. However, since the first rebar and the joint are fixed as described above, the angle of the joint cannot be adjusted before placing concrete in the PC column manufacturing process, and the position of the first and second holes cannot be adjusted. Inconvenient. Even if the first rebar and the joint are not fixed before placing the concrete, adjusting the angle of the joint will change the screwing length between the female thread of the joint and the first rebar, which will adversely affect the connection strength. I will give it.

本発明は上記課題を解決するためになされたものであり、筒状をなす継手と、この継手に端部が挿入されて互いに略同軸をなす第１，第２の２本の鉄筋と、継手の内部空間に充填されたグラウトとを備え、上記２本の鉄筋を、上記継手およびグラウトを介して連結するようにした鉄筋連結構造において、上記継手の少なくとも一端部の内周には、小径をなす雌ねじ部が形成され、さらに上記継手の一端部周壁には上記雌ねじ部より継手の中央寄りに、グラウトの注入または排出に提供される第１穴が形成され、上記継手の他端部周壁には上記グラウトの注入または排出に提供される第２穴が形成され、上記第１鉄筋はねじ鉄筋からなり、その端部は、上記継手の雌ねじ部に螺合するとともにこの雌ねじ部から継手の中央に向かって突出し、この第１鉄筋の突出端部の外周面と継手の内周面との間には、グラウトを充填するための間隙が形成され、上記第１穴がこの第１鉄筋の突出端部の外周面に対峙し、上記第２穴が上記第２鉄筋の端部外周面に対峙することを特徴とする。   The present invention has been made in order to solve the above-described problems, and includes a tubular joint, first and second rebars whose ends are inserted into the joint and are substantially coaxial with each other, and a joint. In the reinforcing bar connecting structure in which the two reinforcing bars are connected via the joint and the grout, a small diameter is formed on the inner periphery of at least one end of the joint. A female screw portion is formed, and a first hole provided for injecting or discharging grout is formed in the peripheral wall of one end of the joint closer to the center of the joint than the female screw portion, and is formed in the peripheral wall of the other end of the joint. Has a second hole provided for injecting or discharging the grout, the first rebar is formed of a threaded rebar, and its end is screwed into the female threaded part of the joint and from the female threaded part to the center of the joint Protruding towards A gap for filling grout is formed between the outer peripheral surface of the protruding end of the first reinforcing bar and the inner peripheral surface of the joint, and the first hole is formed on the outer peripheral surface of the protruding end of the first reinforcing bar. The second hole faces the outer peripheral surface of the end of the second reinforcing bar.

上記構成によれば、少なくとも第１鉄筋はねじ結合とグラウト付着の２つの手段で継手に連結されるので、グラウトだけで第１、第２鉄筋を連結する場合に比べて、継手の長さを短くすることができ、軽量化、コスト低減を図ることができる。また、ねじ結合だけの場合に比べて、ねじ結合での強固な連結を必要とせず雌ねじ部のピッチ数を少なくすることができるので、コスト低減を図ることができる。さらに、継手の角度を調節しても雌ねじ部と第１鉄筋との螺合長さは変わらず、連結強度に悪影響を与えることはない。   According to the above configuration, since at least the first rebar is connected to the joint by two means of screw connection and grout attachment, the length of the joint is reduced as compared with the case where the first and second rebars are connected only by the grout. It can be shortened, and weight reduction and cost reduction can be achieved. Further, as compared with the case of only screw connection, the number of pitches of the female screw portion can be reduced without requiring strong connection by screw connection, so that the cost can be reduced. Furthermore, even if the angle of the joint is adjusted, the screwing length between the female screw portion and the first rebar does not change, and the connection strength is not adversely affected.

好ましくは、上記雌ねじ部が、１ピッチ分以上、２ピッチ分以下の範囲で形成されている。１ピッチ以上あれば継手の雌ねじ部と第１鉄筋の螺合を確保でき、２ピッチ以下であれば、雌ねじ部のピッチ数の削減効果を享受できる。   Preferably, the female screw portion is formed in a range of 1 pitch or more and 2 pitches or less. If it is 1 pitch or more, screwing of the female thread portion of the joint and the first rebar can be secured, and if it is 2 pitches or less, the effect of reducing the number of pitches of the female thread portion can be enjoyed.

好ましくは、上記第１穴が上記雌ねじ部に隣接して形成され、上記継手の他端部には、上記雌ねじ部より径の大きな鉄筋挿入口が形成され、上記第１鉄筋の継手に対する挿入長さが上記第２鉄筋の継手に対する挿入長さより短い。
この構成によれば、特にＰＣ柱の建て込みに好適である。 Preferably, the first hole is formed adjacent to the female screw portion, and a reinforcing bar insertion opening having a diameter larger than that of the female screw portion is formed at the other end of the joint, and the insertion length of the first reinforcing bar with respect to the joint is set. Is shorter than the insertion length of the second rebar into the joint.
According to this configuration, it is particularly suitable for building a PC pillar.

好ましくは、上記継手の両端部の内周には、継手の他の部位より小径をなす雌ねじ部が形成され、上記第１、第２鉄筋がともにねじ鉄筋からなり、上記雌ねじ部に螺合されており、これら雌ねじ部にそれぞれ隣接して上記第１，第２穴が形成され、第１穴がグラウト注入のために提供され、第２穴がグラウト排出のために提供される。
この構成によれば、第１、第２鉄筋ともねじ結合とグラウト付着を介して継手に連結するため、継手をさらに短くし、軽量化、コスト低減を図ることができる。この構成は、例えば梁主筋等の水平に延びる鉄筋の連結に好適である。 Preferably, an internal thread portion having a smaller diameter than other portions of the joint is formed on the inner periphery of both ends of the joint, and the first and second rebars are both screw rebars and are screwed into the female thread portion. The first and second holes are formed adjacent to the female threaded portions, the first hole is provided for grout injection, and the second hole is provided for grout discharge.
According to this configuration, both the first and second rebars are connected to the joint via screw connection and grout adhesion, so that the joint can be further shortened to reduce weight and cost. This configuration is suitable for connecting horizontally extending reinforcing bars such as beam main bars.

好ましくは、上記継手の周壁には第１鉄筋、第２鉄筋に対応してボルトがねじ込まれており、このボルトの先端が第１、第２鉄筋の外周面を押し付けている。これによれば、鉄筋連結強度をさらに高めることができる。   Preferably, a bolt is screwed into the peripheral wall of the joint corresponding to the first reinforcing bar and the second reinforcing bar, and the tip of the bolt presses the outer peripheral surfaces of the first and second reinforcing bars. According to this, the reinforcing bar connection strength can be further increased.

さらに本発明は、筒状をなす鉄筋連結用継手であって、一端部内周に１ピッチ分以上、２ピッチ分以下の雌ねじ部が形成され、この雌ねじ部の内径は他の部位の内径より小さく、他端部に上記雌ねじ部より径の大きな鉄筋挿入口が形成され、上記雌ねじ部に隣接する一端部周壁にグラウトを注入または排出するための第１穴が形成され、他端部周壁にグラウトを注入または排出するための第２穴が形成されていることを特徴とする。
この継手を用いたプレキャストコンクリート製柱では、継手が上記雌ねじ部を上にしてコンクリートの下端部に埋め込まれ、継手の鉄筋挿入口が上記コンクリートの下端面に開口し、上記第１，第２の穴が同方向を向き、これら第１、第２の穴に、コンクリート壁面に開口する第１、第２通路がそれぞれ連なっている。 Furthermore, the present invention relates to a tubular joint for connecting reinforcing bars, in which an internal thread portion of 1 pitch or more and 2 pitches or less is formed on the inner periphery of one end portion, and the internal diameter of the internal thread portion is smaller than the internal diameters of other portions. The other end portion is formed with a reinforcing bar insertion hole having a diameter larger than that of the female screw portion, the first hole for injecting or discharging the grout is formed in the peripheral wall of the one end adjacent to the female screw portion, and the grout is formed in the peripheral wall of the other end portion. A second hole for injecting or discharging the gas is formed.
In the precast concrete column using this joint, the joint is embedded in the lower end portion of the concrete with the female thread portion facing up, the reinforcing bar insertion port of the joint is opened in the lower end surface of the concrete, and the first and second The holes are directed in the same direction, and the first and second passages opened in the concrete wall surface are connected to the first and second holes, respectively.

さらに本発明は、筒状をなす鉄筋連結用継手であって、両端部内周に１ピッチ分以上、２ピッチ分以下の雌ねじ部が形成され、これら雌ねじ部の内径は他の部位の内径より小さく、これら雌ねじ部に隣接する周壁にはグラウトを注入するための第１穴とグラウトを排出するための第２穴が形成されていることを特徴とする。   Furthermore, the present invention is a tubular joint for connecting reinforcing bars, in which internal thread portions of 1 pitch or more and 2 pitches or less are formed on the inner periphery of both ends, and the internal diameters of these internal thread portions are smaller than the internal diameters of other portions. The first peripheral hole for injecting the grout and the second hole for discharging the grout are formed in the peripheral wall adjacent to the female screw portion.

本発明によれば、軽量化、コスト低減を図ることができる鉄筋連結構造および鉄筋連結用継手を提供することができる。   According to the present invention, it is possible to provide a reinforcing bar connecting structure and a reinforcing bar connecting joint capable of achieving weight reduction and cost reduction.

以下、本発明の第１実施形態について、図１〜図４を参照しながら説明する。
図１、図２は、本実施形態で用いられる略円筒形状（筒形状）の継手１０を示す。この継手１０の一端部は、その端面から所定長さにわたって小径をなし、この小径部１１の内周に雌ねじ部１１ａが形成されている。この雌ねじ部１１ａは継手１０の軸線と同軸をなし、完全なねじ山断面を有する部分が１ピッチ分〜２ピッチ分の範囲で形成されている。 Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
1 and 2 show a substantially cylindrical (tubular) joint 10 used in the present embodiment. One end portion of the joint 10 has a small diameter over a predetermined length from the end surface, and a female screw portion 11 a is formed on the inner periphery of the small diameter portion 11. The female thread portion 11a is coaxial with the axis of the joint 10, and a portion having a complete thread cross section is formed in a range of 1 pitch to 2 pitches.

上記雌ねじ部１１ａの内径は、継手１０の他の部位の内径より小さい。継手１０は、上記雌ねじ部１１ａと反対側の他端において、雌ねじ部１１ａより径の大きな鉄筋挿入口１２を有している。   The internal diameter of the female thread portion 11a is smaller than the internal diameter of other parts of the joint 10. The joint 10 has a reinforcing bar insertion opening 12 having a diameter larger than that of the female screw portion 11a at the other end opposite to the female screw portion 11a.

上記継手１０の一端部周壁には、雌ねじ部１１に隣接し、雌ねじ部１１より継手１１の中央寄りに、凸部１３が形成されている。この凸部１３は継手１０の外周面から径方向、外方向に突出しており、この凸部１３に第１穴１３ａが形成されている。   A convex portion 13 is formed on the peripheral wall of one end of the joint 10 adjacent to the female screw portion 11 and closer to the center of the joint 11 than the female screw portion 11. The protrusion 13 protrudes radially and outwardly from the outer peripheral surface of the joint 10, and a first hole 13 a is formed in the protrusion 13.

上記継手１０の他端部（小径部１１と反対側の端部）の周壁には、継手１０の他端面から少し隔てた位置において、凸部１４が形成されている。この凸部１４は、継手１０の外周面から径方向、外方向に突出しており、この凸部１４に第２穴１４ａが形成されている。この第２穴１４ａは第１穴１３ａと同方向を向き、周方向位置が一致している。すなわち、継手１０の軸方向から見た時、第１穴１３ａと第２穴１４ａは重なっている。   A convex portion 14 is formed on the peripheral wall of the other end of the joint 10 (the end opposite to the small diameter portion 11) at a position slightly separated from the other end surface of the joint 10. The protrusion 14 protrudes radially and outwardly from the outer peripheral surface of the joint 10, and a second hole 14 a is formed in the protrusion 14. The second hole 14a faces in the same direction as the first hole 13a and coincides with the circumferential position. That is, when viewed from the axial direction of the joint 10, the first hole 13a and the second hole 14a overlap.

上記継手１０の内周には、その軸方向中心より雌ねじ部１１ａへ所定距離偏倚した位置に、径方向、内方向に突出するストッパ１５が形成されている。本実施形態ではストッパ１５は径方向に対峙して一対形成されている。   A stopper 15 is formed on the inner periphery of the joint 10 so as to protrude radially and inwardly at a position displaced from the axial center by a predetermined distance to the female thread portion 11a. In the present embodiment, a pair of stoppers 15 are formed opposite to each other in the radial direction.

上記継手１０の内部空間において、上記ストッパ１５と継手１０の一端面（雌ねじ部１１ａ側の端面）との間が、後述する第１鉄筋２０が挿入される第１空間部Ｓ１として提供され、上記ストッパ１５と継手１０の他端面（鉄筋挿入口１２側の端面）との間が、後述する第２鉄筋６を挿入するための第２空間部Ｓ２として提供される。第１空間部Ｓ１は第２空間部Ｓ２より短い。   In the internal space of the joint 10, a space between the stopper 15 and one end surface (end surface on the female threaded portion 11 a side) of the joint 10 is provided as a first space S <b> 1 into which a first rebar 20 described later is inserted, and A space between the stopper 15 and the other end surface of the joint 10 (the end surface on the rebar insertion port 12 side) is provided as a second space S2 for inserting a second rebar 6 described later. The first space portion S1 is shorter than the second space portion S2.

上記継手１０の雌ねじ部１１ａを除く部位では、上記ストッパ１５を形成した箇所を含む所定領域で内径が最小であり、その両側に向かって増大している（周壁の肉が薄くなっている）。上記第１空間部Ｓ１において、上記継手１０の薄肉部の内周には複数の環状のリブ１６が軸方向に間隔をおいて形成されている。同様に、上記第２空間部Ｓ２において、上記継手１０の薄肉部の内周にも複数の環状のリブ１７が軸方向に間隔をおいて形成されている。   In a portion excluding the female thread portion 11a of the joint 10, the inner diameter is the smallest in a predetermined region including the portion where the stopper 15 is formed, and increases toward both sides thereof (the wall of the peripheral wall is thinned). In the first space S1, a plurality of annular ribs 16 are formed on the inner periphery of the thin portion of the joint 10 at intervals in the axial direction. Similarly, in the second space S2, a plurality of annular ribs 17 are formed at intervals in the axial direction on the inner periphery of the thin portion of the joint 10.

図３はプレキャストコンクリート製の柱１（以下、ＰＣ柱と称す）を示す。このＰＣ柱１は、例えば断面が四角形をなすコンクリート３０内に、複数のねじ鉄筋からなる主筋としての第１鉄筋２０と、前述した形状をなす複数の継手１０とを埋め込むことにより、構成されている。   FIG. 3 shows a precast concrete column 1 (hereinafter referred to as a PC column). For example, the PC pillar 1 is configured by embedding a first reinforcing bar 20 as a main reinforcing bar composed of a plurality of screw reinforcing bars and a plurality of joints 10 having the above-described shape in a concrete 30 having a quadrangular cross section. Yes.

上記ＰＣ柱１の製造について簡単に説明する。複数の第１鉄筋２０とそれを取り巻くフープ筋（図示しない）とで、鉄筋籠を構築し、それと相前後して第１鉄筋２０の一端部に上記継手１０を取り付ける。すなわち、継手１０の雌ねじ部１１ａに第１鉄筋２０の一端部を螺合させ、その端面が上記ストッパ１５に当たるまで又はその近傍位置に至るまでねじ込む。その結果、第１鉄筋２０の一端部は継手１０の内部空間のうち第１空間部Ｓ１に入り込む。   The manufacture of the PC pillar 1 will be briefly described. A plurality of first reinforcing bars 20 and hoop bars (not shown) surrounding the first reinforcing bars 20 are used to construct a reinforcing bar rod, and the joint 10 is attached to one end of the first reinforcing bar 20 along with it. That is, one end portion of the first reinforcing bar 20 is screwed into the female thread portion 11a of the joint 10, and the end surface is screwed until it hits the stopper 15 or the vicinity thereof. As a result, one end of the first reinforcing bar 20 enters the first space S <b> 1 in the internal space of the joint 10.

第１鉄筋２０において上記雌ねじ部１１ａから継手１０の中央に向かって（ストッパ１５に向かって）突出した端部と継手１０の内周との間には、後述するグラウト４０が充填される間隙Ｇが形成される。雌ねじ部１１ａに隣接した第１穴１３ａは第１鉄筋２０の突出端部の外周面に対峙する。   A gap G in which a grout 40 to be described later is filled between an end portion of the first reinforcing bar 20 projecting from the female screw portion 11a toward the center of the joint 10 (toward the stopper 15) and the inner periphery of the joint 10. Is formed. The first hole 13 a adjacent to the female screw portion 11 a faces the outer peripheral surface of the protruding end portion of the first reinforcing bar 20.

さらに上記継手１０の第１穴１３ａおよび第２穴１４ａにパイプ３１，３２の一端部を差し込んだ状態で、コンクリート３０を打設する。この際、継手１０の鉄筋挿入口１２およびパイプ３１，３２の他端開口は、型枠装置（図示しない）によって塞がれている。   Further, the concrete 30 is placed in a state where one end portions of the pipes 31 and 32 are inserted into the first hole 13a and the second hole 14a of the joint 10. At this time, the reinforcing bar insertion port 12 of the joint 10 and the other end openings of the pipes 31 and 32 are closed by a mold apparatus (not shown).

上記第１鉄筋２０と継手１０の雌ねじ部１１ａとはピッチ数は少ないものの螺合関係を有しているので、特にシールをしなくても両者の間からコンクリート３０が継手１０内に入り込むことはない。   Since the first rebar 20 and the female thread portion 11a of the joint 10 have a small number of pitches but have a screw-engagement relationship, the concrete 30 does not enter the joint 10 from between them even without sealing. Absent.

上記ＰＣ柱１を建て込む際には、ＰＣ柱１を鉛直に吊り下げる。この状態で、継手１０と第１鉄筋２０は鉛直をなし、コンクリート３０の壁面から所定距離隔てて内側に配置されている。第１鉄筋２０の下端は、コンクリート３０の下端面３０ａから所定距離奥に位置している。図示しないが、第１鉄筋２０の上端部はコンクリート３０の上端面から突出している。   When building the PC pillar 1, the PC pillar 1 is suspended vertically. In this state, the joint 10 and the first reinforcing bar 20 are vertical, and are disposed on the inner side at a predetermined distance from the wall surface of the concrete 30. The lower end of the first reinforcing bar 20 is located at a predetermined distance from the lower end surface 30 a of the concrete 30. Although not shown, the upper end portion of the first reinforcing bar 20 protrudes from the upper end surface of the concrete 30.

継手１０の鉄筋挿入口１２は、コンクリート３０の下端面３０ａに開口している。パイプ３１，３２の内部空間はそれぞれグラウトが通る第１通路３１ａ，第２通路３２ａとして提供され、ＰＣ柱１の壁面に開口している。継手１０の内部空間は継手１０の鉄筋挿入口１２および第１通路３１ａ，第２通路３２ａを介して外部と連なっている。   The reinforcing bar insertion opening 12 of the joint 10 is open to the lower end surface 30 a of the concrete 30. The internal spaces of the pipes 31 and 32 are provided as a first passage 31 a and a second passage 32 a through which the grout passes, respectively, and open to the wall surface of the PC pillar 1. The internal space of the joint 10 is connected to the outside through the reinforcing bar insertion port 12 of the joint 10, the first passage 31 a, and the second passage 32 a.

図４に示すように、上記ＰＣ柱１は下方構成部材２に接合される。この下方構成部材２は、例えば図示しない下階のＰＣ柱と梁の仕口部に打設されたコンクリート５からなり、下部ＰＣ柱の主筋としての第２鉄筋６の上端部がこのコンクリート５の上面５ａから突出している。この第２鉄筋６はねじ鉄筋または他の異形鉄筋からなる。   As shown in FIG. 4, the PC pillar 1 is joined to the lower component 2. The lower component 2 is made of, for example, concrete 5 placed on a lower PC pillar and a beam joint (not shown), and the upper end of the second rebar 6 as the main reinforcement of the lower PC pillar is made of the concrete 5. It protrudes from the upper surface 5a. This 2nd reinforcement 6 consists of a screw reinforcement or other deformed reinforcement.

ＰＣ柱１の接合作業について順を追って説明する。まず、下方構成部材２のコンクリート５の上面５ａにレベル（目地幅）設定用のスペーサ（図示しない）を置く。次に、ＰＣ柱１を吊り下げてこのスペーサに載せる。この際、下方構成部材２の第２鉄筋６の上端部が、ＰＣ柱１の継手１０の内部空間の第２空間部Ｓ２に収容され、ＰＣ柱１の第１鉄筋２０の下端部と僅かな間隙を介してほぼ一直線上に対峙する。上記スペーサにより、ＰＣ柱１の下端面３０ａと下方構成部材２の上端面５ａとの間に高さ２ｃｍ程度の目地空間７が形成される。   The joining work of the PC pillar 1 will be described in order. First, a level (joint width) setting spacer (not shown) is placed on the upper surface 5a of the concrete 5 of the lower component 2. Next, the PC pillar 1 is suspended and placed on this spacer. At this time, the upper end portion of the second rebar 6 of the lower component 2 is accommodated in the second space S2 of the internal space of the joint 10 of the PC column 1 and slightly lower than the lower end portion of the first rebar 20 of the PC column 1. Opposite on a straight line through the gap. A joint space 7 having a height of about 2 cm is formed between the lower end surface 30 a of the PC pillar 1 and the upper end surface 5 a of the lower component 2 by the spacer.

次に、上記目地空間７の周縁部を塞ぐように型枠８を設ける。次に、特定の１つの継手１０の第２通路３２ａにノズルを差し込んでグラウト４０を注入する。このグラウト４０は目地空間７を満たした後、継手１０の第２空間部Ｓ２を満たし、さらにその上の第１空間部Ｓ１における間隙Ｇを満たした後、排出口３１ａを通り、第１通路３１ａから外部に漏れ出る。なお、他の継手１０では最初に第２通路３２ａからグラウト４０が漏れ出るので、栓をする。全ての継手１０の第１通路３１ａからグラウト４０が漏れたことを確認した後でグラウト注入作業を終了する。   Next, a mold 8 is provided so as to close the peripheral edge of the joint space 7. Next, a grout 40 is injected by inserting a nozzle into the second passage 32 a of one specific joint 10. The grout 40 fills the joint space 7 and then fills the second space S2 of the joint 10 and further fills the gap G in the first space S1 above the joint 10 and then passes through the discharge port 31a and passes through the first passage 31a. Leak out from the outside. The other joint 10 is plugged because the grout 40 leaks from the second passage 32a first. After confirming that the grout 40 has leaked from the first passages 31a of all the joints 10, the grout injection operation is terminated.

上述したようにして、ＰＣ柱１の第１鉄筋２０と下方構成部材２の第２鉄筋６が継手１０およびグラウト４０を介して連結され、ひいてはＰＣ柱１と下方構成部材２の接合がなされる。   As described above, the first rebar 20 of the PC column 1 and the second rebar 6 of the lower component 2 are connected via the joint 10 and the grout 40, and the PC column 1 and the lower component 2 are joined. .

上記第１鉄筋２０と第２鉄筋６の連結構造において、第１鉄筋２０はねじ結合とグラウト付着の２つの手段で継手１０に連結されるので、グラウト４０だけで連結する場合に比べて、第１空間部Ｓ１の長さを短くすることができ、これにより継手１０の軽量化、コスト低減を図ることができる。
また、ＰＣ柱１の製造工程において、第１穴１３ａと第２穴１４ａの位置合わせのために継手１０の角度を調節しても、雌ねじ部１１ａと第１鉄筋２０との螺合長さは変わらず、連結強度に悪影響を与えることはない。 In the connection structure of the first rebar 20 and the second rebar 6, the first rebar 20 is connected to the joint 10 by two means of screw connection and grout attachment, so that the first rebar 20 is connected to the joint 10 only by the grout 40. The length of 1 space part S1 can be shortened, and, thereby, the weight reduction of the coupling 10 and cost reduction can be aimed at.
Further, in the manufacturing process of the PC pillar 1, even if the angle of the joint 10 is adjusted for the alignment of the first hole 13a and the second hole 14a, the screwing length between the female thread portion 11a and the first reinforcing bar 20 is It does not change and does not adversely affect the connection strength.

上記ＰＣ柱１は上下逆にして建て込まれる場合もある。この場合、継手１０がＰＣ柱１の上端部に位置し、上階のＰＣ柱から延びる第２鉄筋を収容してグラウトの充填を行う。この場合、特定の継手１０の第１穴１３ａがグラウト注入のための穴として提供される。   The PC pillar 1 may be built upside down. In this case, the joint 10 is located at the upper end of the PC pillar 1 and accommodates the second reinforcing bar extending from the PC pillar on the upper floor to fill the grout. In this case, the first hole 13a of the specific joint 10 is provided as a hole for grout injection.

以下、本発明の他の実施形態について説明する。これら実施形態において先行する実施形態に対応する構成部には同番号を付してその詳細な説明を省略する。
図５に示す第２実施形態は、梁主筋としての第１鉄筋５１と第２鉄筋５２を継手１０Ａとグラウト（図示しない）を用いて連結する構造である。これら鉄筋５１，５２はねじ鉄筋からなる。 Hereinafter, other embodiments of the present invention will be described. In these embodiments, components corresponding to the preceding embodiments are assigned the same reference numerals and detailed description thereof is omitted.
The second embodiment shown in FIG. 5 has a structure in which a first reinforcing bar 51 and a second reinforcing bar 52 as beam main bars are connected using a joint 10A and a grout (not shown). These reinforcing bars 51 and 52 are made of screw reinforcing bars.

継手１０Ａは、その両端部が小径部１１をなし、この小径部１１の内周に雌ねじ部１１ａが形成されている。この雌ねじ部１１ａのピッチ数は第１実施形態と同様に１〜２である。継手１０Ａの他の部位の内径は雌ねじ部１１の内径より大きい。   Both ends of the joint 10 </ b> A form a small diameter portion 11, and an internal thread portion 11 a is formed on the inner periphery of the small diameter portion 11. The number of pitches of the female screw portion 11a is 1 to 2 as in the first embodiment. The inner diameter of the other part of the joint 10 </ b> A is larger than the inner diameter of the female screw portion 11.

継手１０Ａの両端部周壁には、雌ねじ部１１ａに隣接して第１穴１３ａと第２穴１４ａが形成されている。継手１０Ａの内部空間において、鉄筋５１，５２の端部を収容するための空間部Ｓ１’，Ｓ２’は等しい長さを有している。   A first hole 13a and a second hole 14a are formed in the peripheral wall of both ends of the joint 10A adjacent to the female screw portion 11a. In the internal space of the joint 10A, the space portions S1 'and S2' for accommodating the ends of the reinforcing bars 51 and 52 have the same length.

上記第２実施形態では、第１鉄筋５１と第２鉄筋５２の端部を、継手１０の両端部の雌ねじ部１１ａにそれぞれねじ込み、継手１０の中央近傍まで入り込ませ、その端面同士を狭い間隔をおいて対峙させる。この状態で、第１穴１３ａからグラウトを注入し、第２穴１４ａから排出されるのを確認して、注入作業を終了する。その結果、継手１０Ａの内部空間にグラウトが充填される。なお、鉄筋５１が継手１０の両端部でねじ結合されているので、継手１０の両端からのグラウトの漏れを防止ないしは最小限に抑えることができる。   In the second embodiment, the ends of the first reinforcing bar 51 and the second reinforcing bar 52 are screwed into the female threaded portions 11a at both ends of the joint 10, respectively, and are inserted to the vicinity of the center of the joint 10, and the end surfaces thereof are narrowly spaced from each other. And confront. In this state, grout is injected from the first hole 13a and it is confirmed that the grout is discharged from the second hole 14a, and the injection operation is finished. As a result, the grout is filled into the internal space of the joint 10A. In addition, since the reinforcing bar 51 is screwed at both ends of the joint 10, leakage of grout from both ends of the joint 10 can be prevented or minimized.

上記第２実施形態では、第１鉄筋５１、第２鉄筋５２とも、ねじ結合とグラウト付着を介して継手１０Ａに連結するため、グラウトだけで連結する場合に比べて継手１０Ａを短くし、軽量化、コスト低減を図ることができる。   In the second embodiment, both the first reinforcing bar 51 and the second reinforcing bar 52 are connected to the joint 10A through screw connection and grout adhesion. Therefore, the joint 10A is shortened and reduced in weight compared to the case of connecting only with the grout. Cost reduction can be achieved.

図６に示す第３実施形態は、第２実施形態の継手１０Ａにボルト６０を付加したものである。このボルト６０は継手１０Ａの中央から離れた左右２箇所において継手１０Ａの周壁にねじ込まれている。このボルト６０の周方向位置は穴１３ａ，１４ａと一致する。これらボルト６０を対応する鉄筋５１，５２の端部外周面に押し付けることにより、鉄筋５１，５２の連結強度を高めることができる。なお、継手１０ａの内周には上記ボルト６０と径方向に対峙する位置に、鉄筋５１，５２を受けるための受け凸部１９が形成されている。   In the third embodiment shown in FIG. 6, a bolt 60 is added to the joint 10A of the second embodiment. The bolt 60 is screwed into the peripheral wall of the joint 10A at two left and right positions away from the center of the joint 10A. The circumferential position of the bolt 60 coincides with the holes 13a and 14a. By pressing these bolts 60 against the outer peripheral surfaces of the ends of the corresponding reinforcing bars 51 and 52, the connection strength of the reinforcing bars 51 and 52 can be increased. In addition, the receiving convex part 19 for receiving the reinforcing bars 51 and 52 is formed in the inner periphery of the joint 10a at a position facing the bolt 60 in the radial direction.

本発明は上記実施形態に制約されず、種々の態様を採用可能である。
例えば、図５、図６の実施形態において、継手の一端部に雌ねじ部を形成し、他端部は雌ねじ部より大径の装着口にし、この装着口にしてシール材を装着してもよい。この場合、一方の鉄筋はねじ結合とグラウト付着の両方によって継手に連結されるが、他方の鉄筋はグラウト付着のみで継手に連結される。 The present invention is not limited to the above embodiment, and various aspects can be adopted.
For example, in the embodiment of FIGS. 5 and 6, a female thread portion may be formed at one end of the joint, and the other end may be a mounting port having a larger diameter than the female thread portion, and a sealing material may be mounted as the mounting port. . In this case, one rebar is connected to the joint by both screw connection and grout attachment, while the other rebar is connected to the joint by grout attachment only.

本発明の第１実施形態をなす鉄筋連結構造に用いられる継手の縦断面図である。It is a longitudinal cross-sectional view of the coupling used for the reinforcing bar connection structure which constitutes a 1st embodiment of the present invention. （Ａ）は図１においてＡ方向から見た正面図であり、（Ｂ）は図１においてＢ−Ｂ線に沿う横断面図である。(A) is the front view seen from the A direction in FIG. 1, (B) is a cross-sectional view which follows the BB line in FIG. 同継手とこの継手の一端部に連結された第１鉄筋とを含むプレキャストコンクリート柱の要部断面図である。It is principal part sectional drawing of the precast concrete pillar containing the joint and the 1st reinforcing bar connected with the one end part of this joint. 同プレキャストコンクリート柱を下方構成部材の上面に接合した状態を示す要部拡大断面図である。It is a principal part expanded sectional view which shows the state which joined the precast concrete pillar to the upper surface of the downward component member. 本発明の第２実施形態に係る鉄筋連結構造の縦断面図である。It is a longitudinal cross-sectional view of the reinforcing bar connection structure according to the second embodiment of the present invention. 本発明の第３実施形態に係る鉄筋連結構造の縦断面図である。It is a longitudinal cross-sectional view of the reinforcing bar connection structure according to the third embodiment of the present invention.

符号の説明Explanation of symbols

１ プレキャストコンクリート柱
２ 下方構成部材
６ 第２鉄筋
１０，１０Ａ 継手
１１ａ 雌ねじ部
１２ 鉄筋挿入口
１３ａ 第１穴
１４ａ 第２穴
２０ 第１鉄筋
４０ グラウト
５１ 第１鉄筋
５２ 第２鉄筋
６０ ボルト DESCRIPTION OF SYMBOLS 1 Precast concrete pillar 2 Lower component member 6 2nd rebar 10, 10A Joint 11a Female thread part 12 Reinforcing bar insertion port 13a 1st hole 14a 2nd hole 20 1st rebar 40 Grout 51 1st rebar 52 2nd rebar 60 Bolt

Claims (7)

筒状をなす継手と、この継手に端部が挿入されて互いに略同軸をなす第１，第２の２本の鉄筋と、継手の内部空間に充填されたグラウトとを備え、上記２本の鉄筋を、上記継手およびグラウトを介して連結するようにした鉄筋連結構造において、
上記継手の少なくとも一端部の内周には、小径をなす雌ねじ部が形成され、さらに上記継手の一端部周壁には上記雌ねじ部より継手の中央寄りに、グラウトの注入または排出に提供される第１穴が形成され、上記継手の他端部周壁には上記グラウトの注入または排出に提供される第２穴が形成され、
上記第１鉄筋はねじ鉄筋からなり、その端部は、上記継手の雌ねじ部に螺合するとともにこの雌ねじ部から継手の中央に向かって突出し、この第１鉄筋の突出端部の外周面と継手の内周面との間には、グラウトを充填するための間隙が形成され、上記第１穴がこの第１鉄筋の突出端部の外周面に対峙し、上記第２穴が上記第２鉄筋の端部外周面に対峙することを特徴とする鉄筋連結構造。 A joint having a cylindrical shape, first and second rebars whose ends are inserted into the joint and are substantially coaxial with each other, and a grout filled in the inner space of the joint. In the reinforcing bar connecting structure in which the reinforcing bar is connected via the joint and grout,
A female threaded portion having a small diameter is formed on the inner periphery of at least one end of the joint, and a peripheral wall of one end of the joint is provided closer to the center of the joint than the female threaded portion for injection or discharge of grout. 1 hole is formed, the second hole provided to the injection or discharge of the grout is formed in the peripheral wall of the other end of the joint,
The first rebar is a threaded rebar, and an end of the first rebar is screwed into the female thread of the joint and protrudes from the female thread toward the center of the joint. A gap for filling grout is formed between the inner peripheral surface of the first reinforcing bar, the first hole faces the outer peripheral surface of the protruding end of the first reinforcing bar, and the second hole is the second reinforcing bar. Reinforcing bar connection structure characterized by facing the outer peripheral surface of the end of the steel. 上記雌ねじ部が、１ピッチ分以上、２ピッチ分以下の範囲で形成されていることを特徴とする請求項１に記載の鉄筋連結構造。   The reinforcing bar connecting structure according to claim 1, wherein the female thread portion is formed in a range of 1 pitch or more and 2 pitches or less. 上記第１穴が上記雌ねじ部に隣接して形成され、上記継手の他端部には、上記雌ねじ部より径の大きな鉄筋挿入口が形成され、上記第１鉄筋の継手に対する挿入長さが上記第２鉄筋の継手に対する挿入長さより短いことを特徴とする請求項１または２に記載の鉄筋連結構造。   The first hole is formed adjacent to the female threaded portion, and the other end portion of the joint is formed with a reinforcing bar insertion opening having a diameter larger than that of the female threaded portion. The reinforcing bar connecting structure according to claim 1 or 2, wherein the insertion length of the second reinforcing bar is shorter than the insertion length. 上記継手の両端部の内周には、継手の他の部位より小径をなす雌ねじ部が形成され、上記第１、第２鉄筋がともにねじ鉄筋からなり、上記雌ねじ部に螺合されており、
これら雌ねじ部にそれぞれ隣接して上記第１，第２穴が形成され、第１穴がグラウト注入のために提供され、第２穴がグラウト排出のために提供されることを特徴とする請求項１または２に記載の鉄筋連結構造。 A female thread portion having a smaller diameter than other parts of the joint is formed on the inner periphery of both ends of the joint, and the first and second reinforcing bars are both screw reinforcing bars, and are screwed into the female thread portion.
The first and second holes are formed adjacent to each of the female thread portions, the first hole is provided for grout injection, and the second hole is provided for grout discharge. 3. The reinforcing bar connecting structure according to 1 or 2. 上記継手の周壁には第１鉄筋、第２鉄筋に対応してボルトがねじ込まれており、このボルトの先端が第１、第２鉄筋の外周面を押し付けていることを特徴とする請求項４に記載の鉄筋連結構造。   5. A bolt is screwed into the peripheral wall of the joint corresponding to the first and second reinforcing bars, and the tip of the bolt presses the outer peripheral surface of the first and second reinforcing bars. Reinforcing bar connection structure described in 1. 筒状をなす鉄筋連結用継手であって、一端部内周に１ピッチ分以上、２ピッチ分以下の雌ねじ部が形成され、この雌ねじ部の内径は他の部位の内径より小さく、他端部に上記雌ねじ部より径の大きな鉄筋挿入口が形成され、上記雌ねじ部に隣接する一端部周壁にグラウトを注入または排出するための第１穴が形成され、他端部周壁にグラウトを注入または排出するための第２穴が形成されていることを特徴とする鉄筋連結用継手。   This is a joint for connecting reinforcing bars in the form of a cylinder, and an internal thread part of 1 pitch or more and 2 pitches or less is formed on the inner periphery of one end part. The internal diameter of this internal thread part is smaller than the internal diameters of other parts, and the other end part A rebar insertion opening having a diameter larger than that of the female screw portion is formed, a first hole for injecting or discharging grout is formed in one end peripheral wall adjacent to the female screw portion, and grout is injected or discharged in the other end peripheral wall. A joint for connecting reinforcing bars, characterized in that a second hole is formed. 筒状をなす鉄筋連結用継手であって、両端部内周に１ピッチ分以上、２ピッチ分以下の雌ねじ部が形成され、これら雌ねじ部の内径は他の部位の内径より小さく、これら雌ねじ部に隣接する周壁にはグラウトを注入するための第１穴とグラウトを排出するための第２穴が形成されていることを特徴とする鉄筋連結用継手。   This is a tubular joint for connecting reinforcing bars, and internal thread portions of 1 pitch or more and 2 pitches or less are formed on the inner periphery of both ends. The internal diameters of these internal thread portions are smaller than the internal diameters of other parts, A joint for reinforcing steel bars, wherein a first hole for injecting grout and a second hole for discharging grout are formed in adjacent peripheral walls.
JP2008096082A 2008-04-02 2008-04-02 Reinforcing bar connection structure and joint for reinforcing bar connection Expired - Fee Related JP5081040B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008096082A JP5081040B2 (en) 2008-04-02 2008-04-02 Reinforcing bar connection structure and joint for reinforcing bar connection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008096082A JP5081040B2 (en) 2008-04-02 2008-04-02 Reinforcing bar connection structure and joint for reinforcing bar connection

Publications (2)

Publication Number Publication Date
JP2009249847A JP2009249847A (en) 2009-10-29
JP5081040B2 true JP5081040B2 (en) 2012-11-21

Family

ID=41310803

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008096082A Expired - Fee Related JP5081040B2 (en) 2008-04-02 2008-04-02 Reinforcing bar connection structure and joint for reinforcing bar connection

Country Status (1)

Country Link
JP (1) JP5081040B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016205033A (en) * 2015-04-27 2016-12-08 日本スプライススリーブ株式会社 Sleeve for reinforcement joint
JP6944210B2 (en) * 2015-04-27 2021-10-06 日本スプライススリーブ株式会社 Reinforcing bar joint sleeve

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63174229U (en) * 1986-11-04 1988-11-11
JPH09209334A (en) * 1996-02-06 1997-08-12 Daiwa Kuresu Kk Joining method for concrete member
JP2003113644A (en) * 2001-10-04 2003-04-18 Tokyo Tekko Co Ltd Building method of precast concrete-made vertical member
JP2004238869A (en) * 2003-02-05 2004-08-26 Nippon Splice Sleeve Kk Method for connecting reinforcement joint fitting with reinforcement

Also Published As

Publication number Publication date
JP2009249847A (en) 2009-10-29

Similar Documents

Publication Publication Date Title
US5366672A (en) Method of forming concrete structures with a grout splice sleeve which has a threaded connection to a reinforcing bar
JP5592220B2 (en) Precast member joining method
JP2008163556A (en) Reinforcing bar connecting device
KR100862005B1 (en) Manufacturing method of segmental internally confined hollow concrete filled tube
WO2019196743A1 (en) Sleeve outer nut snap-on connecting device, connecting structure thereof and mounting method therefor
JP5081040B2 (en) Reinforcing bar connection structure and joint for reinforcing bar connection
JP2018178365A (en) Reinforcement joint coupler
KR100738999B1 (en) Precast concrete segment having connecting structure using steel duct, and connecting structure thereof
KR101465514B1 (en) Sleeve for joint reinforces
US11732479B2 (en) Sleeve for connecting steel bar
JP2009150049A (en) Seal structure for connection of reinforcement, and reinforcement connecting device
JP4355694B2 (en) Precast material
JP4852377B2 (en) Reinforcing bar joint sleeve, joint using the sleeve, and reinforcing bar structure
JP2005200994A (en) Joining structure of closed cross-sectional member
JP5369373B2 (en) Reinforcing bar fixing structure, reinforcing bar fixing method, PC member joining structure, PC member joining method
CN105781027A (en) Grouting sleeve and prefabricated member
JP5717983B2 (en) Member joining structure, building, and member joining method
JP2010185205A (en) Reinforcement joint and method for connecting reinforcement
JP3889283B2 (en) Fixing hardware for screw rebar
JP4657667B2 (en) Stopcock
JP2006283434A (en) Concrete block product
JP4355688B2 (en) Reinforcing bar joints and precast members
JP2005282181A (en) Pc member and joining method therefor
JP5495962B2 (en) Mechanical rebar joint and reinforcement structure with shear reinforcement support function
KR102573472B1 (en) Steel reinforcing coupler

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20110217

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20120813

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20120828

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20120831

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20150907

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Ref document number: 5081040

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees