JP3678358B2 - Reinforcing bar joint structure - Google Patents

Reinforcing bar joint structure Download PDF

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Publication number
JP3678358B2
JP3678358B2 JP2001401346A JP2001401346A JP3678358B2 JP 3678358 B2 JP3678358 B2 JP 3678358B2 JP 2001401346 A JP2001401346 A JP 2001401346A JP 2001401346 A JP2001401346 A JP 2001401346A JP 3678358 B2 JP3678358 B2 JP 3678358B2
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Japan
Prior art keywords
thread
joint
threaded
joint pipe
reinforcing bar
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JP2001401346A
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JP2003193569A (en
Inventor
富士夫 山崎
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Fuji Bolt Manufacturing Co Ltd
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Fuji Bolt Manufacturing Co Ltd
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Description

【０００１】
【発明の属する技術分野】
本発明は土木、建築現場における異形鉄筋同士を付き合わせて連結する鉄筋の継手構造及びこの継手構造における鉄筋の連結方法に関するもので、例えば鉄筋コンクリート造、鉄骨鉄筋コンクリート造の構造物を構築する場合、軸方向に移動ができる主筋の連結に使用されるものである。
【０００２】
【従来の技術】
従来から、軸方向に移動できる異形鉄筋の継手構造は、連結すべき２本の異形鉄筋の一端はそれぞれ継手パイプに挿入して予め圧着してあり、この両継手パイプは一本の接続ボルトにより連結されるものである。
【０００３】
【発明が解決しようとする課題】
しかし、両継手パイプを接続ボルトで連結するとき、左右の異形鉄筋に予め固着してある２つの継手パイプと接続ボルトとの３つの部材の各軸心を同時に軸合わせて、この状態を保持しながら、この接続ボルトを両継手パイプに螺入させることによりこの両継手パイプを軸方法に引き寄せて連結するため、その作業が困難であり、作業効率に問題があった。
【０００４】
そこで、本発明の目的は鉄筋の連結作業が簡単で、作業効率を向上させた鉄筋の継手構造及びこの継手構造における鉄筋の連結方法を提供することにある。
【０００５】
【課題を解決するための手段】
本発明に係る鉄筋の継手構造の特徴は、連結すべき２本の鉄筋と、２つの継手パイプと、１本の接続ボルトとから構成してあり、上記２つの継手パイプの一端部には、それぞれ上記鉄筋の先端部が連結してあり、上記２つの継手パイプの内周面には、相互に逆方向の雌ねじ部が形成してあり、かつ、この継手パイプの一方の雌ねじ部は一条ねじ、他方の雌ねじ部は多条ねじであり、上記接続ボルトには、その中央部から左右端部に向けて相互に逆方向の雄ねじ部が形成してあり、かつ、この雄ねじ部の一方は一条ねじ、他方は多条ねじであり、上記接続ボルトの一条ねじのねじ部は、上記継手パイプの一条ねじのねじ部に螺合可能であり、上記接続ボルトの多条ねじのねじ部は、上記継手パイプの多条ねじのねじ部に螺合可能であるところにある。
【０００６】
また、本発明に係る鉄筋の連結方法の特徴は、前記特徴を有する鉄筋の継手構造をおいて、最初に一条ねじ同士の継手パイプと接続ボルトとをゲージを用いて所定長残して接続させ、その後で、一条ねじ同士の継手パイプと接続ボルトと多条ねじ同士の継手パイプと接続ボルトとを同時に接続させるところにある。
【０００７】
【発明の実施の形態】
そこで、本発明の実施の形態を図面を参照して説明すると、図１に示すように、連結すべき２本の異形鉄筋１，２と、２つの継手パイプ３，４と、１本の接続ボルト５とから構成してある。２つの継手パイプ３，４のそれぞれの外端には、鉄筋１，２の先端部が予め挿入されて圧着して連結してある。
【０００８】
２つの継手パイプ３，４の内端部の内周面には、それぞれ雌ねじ部３ａ，４ａが刻設してあり、さらに、この両雌ねじ部３ａ，４ａは相互に逆方向に形成してあり、かつ、この継手パイプの一方３の雌ねじ部３ａは一条ねじ、他方４の雌ねじ部４ａは多条ねじの四条ねじであり、
【０００９】
接続ボルト５には、その中央部から左右端部に向けて相互に逆方向の雄ねじ部５ａ，５ｂが形成してあり、さらに、この雄ねじ部の一方５ａは一条ねじ、他方５ｂは多条ねじの四条ねじである。接続ボルト５は図２、図３に示すように、中央部にトルクコントロールピン６が植設してあり、このピンに係合する係合溝７ａが形成してある締付けリング７が取り付けてある。
【００１０】
そして、接続ボルト５の一条ねじの雄ねじ部５ａは一方の継手パイプ３の一条ねじの雌ねじ部３ａに螺合可能であり、また、この接続ボルトの四条ねじのねじ部５ｂは他方の継手パイプ４の四条ねじのねじ部４ａと螺合可能である。
【００１１】
次に、本発明による異形鉄筋１，２の連結作業について説明する。図１の状態において、先ず、一方の継手パイプ３と接続ボルト５の軸心を合わせ、この接続ボルトの左半部の一条ねじである雄ねじ５ａを、締付けリング７を回転させることにより、この継手パイプの一条ねじである雌ねじ３ａに螺入する。この時、図４に示すように雄ねじ５ａの４分の１は螺入させないで残す。この４分の１のねじ部を残すには、ゲージ８を用いると便利である。次に、ゲージ８を外し、四条ねじの雄ねじ部５ｂを他方の継手パイプ４の軸心に合わせ、締付けリング７を回転させ、この雄ねじ部５ｂを継手パイプ４の雌ねじ部４ａに螺入する。これと同時に、接続ボルト５の残りの４分の１のねじ部５ａも継手パイプ３に螺入し、そのため、両雄ねじ部５ａ，５ｂはそれぞれ継手パイプ３，４に完全に螺入し螺合する。そして、この時の締付けリング７の回転数は４分の１、即ち、１／多条の整数の回転数で済む。
【００１２】
前記実施例では、多条ねじとして四条ねじを示したが、その他の多条ねじも選択できる。
【００１３】
【発明の効果】
本発明によると、連結作業が最初に一条ねじの一方の継手パイプと接続ボルトとの２部品の軸心を合わせて所定長残して螺合して連結し、次に、多条ねじの他方の継手パイプと接続ボルトとの２部品の軸心を合わせて螺合して、前記残りの一条ねじの一方の継手パイプと接続ボルトと同時に連結するので、従来のように、両継手パイプと接続ボルトとの３部材を同時に軸心合わせする必要がなく、そのため連結作業が容易になり、作業効率が向上する。特に、最初に一条ねじの一方の継手パイプと接続ボルトとの２部品の軸心を合わせて所定長残して螺合して連結するのにゲージを用いると、この所定長残して正確に連結させるのが容易になる。
【図面の簡単な説明】
【図１】 異形鉄筋、継手パイプ、接続ボルトによる接続構造の展開図である。
【図２】 接続ボルトの拡大正面図である。
【図３】 図２に示す接続ボルトの断面図である
【図４】 異形鉄筋の接続途中の状態を示す正面図である。
【符号の説明】
１，２ 鉄筋
３，４ 継手パイプ
３ａ 一条ねじの雌ねじ部
４ａ 多条ねじの雌ねじ部
５ 接続ボルト
５ａ 一条ねじの雄ねじ部
５ｂ 多条ねじの雄ねじ部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a joint structure for reinforcing bars that connect and connect deformed reinforcing bars in civil engineering and construction sites, and a method for connecting the reinforcing bars in this joint structure. It is used to connect main muscles that can move in the direction.
[0002]
[Prior art]
Conventionally, the joint structure of deformed reinforcing bars that can move in the axial direction is that one end of each of the two deformed reinforcing bars to be connected is inserted into a joint pipe and crimped in advance. It is to be connected.
[0003]
[Problems to be solved by the invention]
However, when connecting both joint pipes with connecting bolts, the shaft centers of the three members of the two joint pipes and connecting bolts, which are pre-fixed to the left and right deformed reinforcing bars , are aligned simultaneously to maintain this state. However, since the connecting bolts are screwed into the two joint pipes, the two joint pipes are pulled and connected to the shaft method, so that the work is difficult and the work efficiency is problematic.
[0004]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a reinforcing bar joint structure in which the reinforcing bar connecting operation is simple and the working efficiency is improved, and a reinforcing bar connecting method in this joint structure.
[0005]
[Means for Solving the Problems]
The feature of the joint structure of the reinforcing bar according to the present invention is composed of two reinforcing bars to be connected, two joint pipes, and one connection bolt, and at one end of the two joint pipes, The end portions of the reinforcing bars are connected to each other, and female thread portions in opposite directions are formed on the inner peripheral surfaces of the two joint pipes, and one female thread portion of the joint pipe is a single thread. The other female threaded portion is a multi-threaded screw, and the connecting bolt is formed with male threaded portions in opposite directions from the center to the left and right ends, and one of the male threaded portions is a single thread. The screw, the other is a multi-threaded screw, the threaded portion of the single-threaded thread of the connecting bolt can be screwed into the threaded threaded portion of the joint pipe, and the threaded portion of the multi-threaded thread of the connecting bolt is Where it can be screwed onto the thread of the multi-thread thread of the joint pipe That.
[0006]
Further, the reinforcing bar connecting method according to the present invention is characterized in that the reinforcing bar joint structure having the above-described characteristics is first connected by using a gauge to connect the joint pipe between the single thread threads and the connecting bolt, leaving a predetermined length, Thereafter, the joint pipe and the connecting bolt of the single thread threads are connected to the joint pipe and the connecting bolt of the multi-thread threads at the same time.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Therefore, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, two deformed reinforcing bars 1 and 2 to be connected, two joint pipes 3 and 4, and one connection It is comprised from the volt | bolt 5. At the outer ends of the two joint pipes 3 and 4, the end portions of the reinforcing bars 1 and 2 are inserted in advance and connected by pressure bonding.
[0008]
Female threaded portions 3a and 4a are respectively formed on the inner peripheral surfaces of the inner end portions of the two joint pipes 3 and 4, and the female threaded portions 3a and 4a are formed in opposite directions. And, the female thread part 3a of one 3 of this joint pipe is a single thread, and the female thread part 4a of the other 4 is a multi-threaded four thread,
[0009]
The connecting bolt 5 is formed with male screw portions 5a and 5b in opposite directions from the center to the left and right ends. Further, one of the male screw portions 5a is a single screw and the other 5b is a multi-thread screw. No. 4 thread screw. As shown in FIGS. 2 and 3, the connecting bolt 5 has a torque control pin 6 implanted in the center thereof, and a tightening ring 7 having an engaging groove 7a to be engaged with the pin. .
[0010]
The male thread 5a of the single thread of the connection bolt 5 can be screwed into the female thread 3a of the single thread of one joint pipe 3, and the thread 5b of the four thread of the connection bolt is the other joint pipe 4. Can be screwed into the threaded portion 4a of the four-thread screw.
[0011]
Next, the connection work of the deformed reinforcing bars 1 and 2 according to the present invention will be described. In the state of FIG. 1, first, the joint pipe 3 and the connecting bolt 5 are aligned with each other, and the male thread 5a, which is a single thread on the left half of the connecting bolt, is rotated by rotating the tightening ring 7. Screw into a female thread 3a which is a single thread of the pipe. At this time, as shown in FIG. 4, a quarter of the male screw 5a is left without being screwed. It is convenient to use the gauge 8 to leave the 1/4 threaded portion. Next, the gauge 8 is removed, the male thread portion 5b of the four-thread thread is aligned with the axis of the other joint pipe 4, the tightening ring 7 is rotated, and the male thread portion 5b is screwed into the female thread portion 4a of the joint pipe 4. At the same time, the remaining quarter of the threaded portion 5a of the connecting bolt 5 is also screwed into the joint pipe 3, so that both male threaded portions 5a and 5b are completely screwed into the joint pipes 3 and 4, respectively. To do. At this time, the number of rotations of the tightening ring 7 is ¼, that is, an integer number of rotations of 1 / multiple.
[0012]
In the said Example, although the four-thread screw was shown as a multi-thread thread, another multi-thread thread can also be selected.
[0013]
【The invention's effect】
According to the present invention, the connecting operation is performed by first connecting the joint parts of one joint thread of the single thread and the connecting bolt by screwing together with a predetermined length, and then connecting the other thread of the multi-thread thread. Two joint pipes and connecting bolts are aligned and screwed together, and one of the remaining single-threaded threads is connected to the connecting pipe simultaneously with the connecting bolt. These three members need not be aligned at the same time, so that the connecting operation is facilitated and the working efficiency is improved. In particular, when a gage is used to first connect the joint parts of one threaded screw and the connecting bolt with the shaft center of the two parts, leaving a predetermined length and screwing and connecting them, the predetermined length remains and is accurately connected. It becomes easy.
[Brief description of the drawings]
FIG. 1 is a development view of a connection structure using deformed reinforcing bars , joint pipes, and connection bolts.
FIG. 2 is an enlarged front view of a connection bolt.
3 is a cross-sectional view of the connecting bolt shown in FIG. 2. FIG. 4 is a front view showing a state in the middle of connecting deformed reinforcing bars .
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1, 2 Reinforcing bar 3, 4 Joint pipe 3a Female thread part of single thread 4a Female thread part of multiple thread 5 Connection bolt 5a Male thread part of single thread 5b Male thread part of multiple thread

Claims (2)

連結すべき２本の鉄筋と、２つの継手パイプと、１本の接続ボルトとから構成してあり、
上記２つの継手パイプの一端部には、それぞれ上記鉄筋の先端部が連結してあり、
上記２つの継手パイプの内周面には、相互に逆方向の雌ねじ部が形成してあり、かつ、この継手パイプの一方の雌ねじ部は一条ねじ、他方の雌ねじ部は多条ねじであり、
上記接続ボルトには、その中央部から左右端部に向けて相互に逆方向の雄ねじ部が形成してあり、かつ、この雄ねじ部の一方は一条ねじ、他方は多条ねじであり、
上記接続ボルトの一条ねじのねじ部は、上記継手パイプの一条ねじのねじ部に螺合可能であり、
上記接続ボルトの多条ねじのねじ部は、上記継手パイプの多条ねじのねじ部に螺合可能である
ことを特徴とする鉄筋の継手構造。It consists of two rebars to be connected, two joint pipes, and one connection bolt,
One end of the two joint pipes is connected to the tip of the reinforcing bar,
On the inner peripheral surfaces of the two joint pipes, female thread portions in opposite directions are formed, and one female thread portion of the joint pipe is a single thread, and the other female thread portion is a multiple thread.
In the connection bolt, male screw portions in opposite directions are formed from the central portion toward the left and right end portions, and one of the male screw portions is a single thread, and the other is a multiple thread.
The thread portion of the single thread of the connection bolt can be screwed to the thread portion of the single thread of the joint pipe,
Reinforcing bar joint structure characterized in that the threaded portion of the multi-threaded thread of the connecting bolt can be screwed into the threaded section of the threaded thread of the joint pipe. 請求項１に記載の鉄筋の継手構造をおいて、最初に一条ねじ同士の継手パイプと接続ボルトとをゲージを用いて所定長残して接続させ、その後で、一条ねじ同士の継手パイプと接続ボルトと多条ねじ同士の継手パイプと接続ボルトとを同時に接続させる
ことを特徴とする鉄筋の連結方法。In the reinforcing bar joint structure according to claim 1, first, the joint pipe and the connection bolt of the single thread are left to connect with a predetermined length using a gauge, and then the joint pipe and the connection bolt of the single thread are connected. A connecting method of reinforcing bars, characterized in that a joint pipe and a connecting bolt of a multi-thread thread are connected simultaneously.
JP2001401346A 2001-12-28 2001-12-28 Reinforcing bar joint structure Expired - Lifetime JP3678358B2 (en)

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JP3678358B2 true JP3678358B2 (en) 2005-08-03

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CN106245766B (en) * 2016-09-23 2018-07-03 沈阳建筑大学 Self-expanding friction-type steel pipe connection structure and assemble method

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