JP6359748B1 - Deformed steel bar connection structure - Google Patents

Deformed steel bar connection structure Download PDF

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JP6359748B1
JP6359748B1 JP2017223623A JP2017223623A JP6359748B1 JP 6359748 B1 JP6359748 B1 JP 6359748B1 JP 2017223623 A JP2017223623 A JP 2017223623A JP 2017223623 A JP2017223623 A JP 2017223623A JP 6359748 B1 JP6359748 B1 JP 6359748B1
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steel bar
deformed steel
coupler
deformed
locking member
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出 橋詰
出 橋詰
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Abstract

【課題】メーカーや製品ごとに寸法にばらつきのある異形棒鋼の接続が、異形棒鋼の長手方向でずれを生じない強固な状態に行えるようにする。【解決手段】異形棒鋼12の先端部13を接続するための異形棒鋼接続具11において、異形棒鋼12の外周面に配置される係止部材31と、異形棒鋼12に挿嵌されて係止部材31を取り囲む筒状のカプラ51を備える。係止部材31は、内周面に形成されて異形棒鋼12の節16間に節16との間に隙間32をあけて入り込む山部33と、外周面に形成されてカプラ51に押さえられる先端側ほど大径の傾斜面34を有する。カプラ51は、異形棒鋼12の先端側に向けての相対移動で係止部材31の傾斜面34を先端方向と異形棒鋼12側に押圧する先端側ほど大径の円錐状面53と、接続相手に対する結合用のねじ部54を、軸方向の後端側から先端側に順に有する。【選択図】図1An object of the present invention is to make it possible to connect deformed steel bars having dimensional variations for each manufacturer and product in a strong state in which no deformation occurs in the longitudinal direction of the deformed steel bars. In a deformed steel bar connecting tool 11 for connecting a distal end portion 13 of a deformed steel bar 12, a locking member 31 disposed on an outer peripheral surface of the deformed steel bar 12, and a locking member inserted into the deformed steel bar 12 are fitted. A cylindrical coupler 51 surrounding 31 is provided. The locking member 31 is formed on the inner peripheral surface and has a crest 33 that enters between the nodes 16 of the deformed steel bar 12 with a gap 32 between the nodes 16, and a tip that is formed on the outer peripheral surface and pressed by the coupler 51. An inclined surface 34 having a larger diameter is provided on the side. The coupler 51 includes a conical surface 53 having a larger diameter on the distal end side that presses the inclined surface 34 of the locking member 31 toward the distal direction and the deformed steel bar 12 side by relative movement toward the distal end side of the deformed steel bar 12, and a connection partner. The screw part 54 for coupling to is provided in order from the rear end side to the front end side in the axial direction. [Selection] Figure 1

Description

この発明は、異形棒鋼同士を接続したり異形棒鋼と他の部材を接続したりする場合に使用される異形棒鋼接続構造に関する。 The present invention relates to a deformed steel bar connection structure used when connecting deformed steel bars or connecting a deformed steel bar and another member.

異形棒鋼同士を接続する接続具としては、例えば下記特許文献1に開示されているものがある。   As a connection tool for connecting deformed steel bars, for example, there is one disclosed in Patent Document 1 below.

この異形棒鋼接続具は、一端側の内周面にテーパ孔を有し他端側の内周面にねじ孔を有した円筒状の接続具本体と、接続具本体のねじ孔に螺合する円筒状の締め付けボトルと、接続具本体のテーパ孔と異形棒鋼との間、及び締め付けボルトの内周面に形成されたテーパ孔と異形棒鋼との間に挿着されるそれぞれ一対の楔片で構成されている。異形棒鋼の端部の外周面に一対の楔片を配置するとともにその外周側に接続具本体を嵌める。一方、接続する別の異形棒鋼の端部の外周面に対して一対の楔片と締め付けボルトを取り付けて、締め付けボルトを接続具本体の他端側の内周面に螺合する。すると、異形棒鋼の先端面同士が当接し、さらに締め付けることによって、楔片が異形棒鋼を押圧して接続が完了する。   This deformed steel bar connector is screwed into a cylindrical connector body having a tapered hole on the inner peripheral surface on one end side and a screw hole on the inner peripheral surface on the other end side, and a screw hole of the connector body. A pair of wedge pieces inserted between the cylindrical tightening bottle, the tapered hole of the connector body and the deformed steel bar, and between the tapered hole formed on the inner peripheral surface of the tightening bolt and the deformed steel bar. It is configured. A pair of wedge pieces are arranged on the outer peripheral surface of the end portion of the deformed steel bar, and the connector main body is fitted on the outer peripheral side thereof. On the other hand, a pair of wedge pieces and a tightening bolt are attached to the outer peripheral surface of the end of another deformed steel bar to be connected, and the tightening bolt is screwed to the inner peripheral surface on the other end side of the connector body. Then, the front end surfaces of the deformed steel bars come into contact with each other, and further tightened, whereby the wedge pieces press the deformed steel bars to complete the connection.

しかし、半円筒形に形成された楔片は、異形棒鋼に当たる内周面に、異形棒鋼の表面の凹所と嵌合する半リング状の凸条が形成されたものである。このため、楔片をテーパ孔で締め付けても、凸条が凹所に対して全体として強く当たるだけである。   However, the wedge piece formed in a semi-cylindrical shape is formed with a semi-ring-shaped ridge that fits with a recess on the surface of the deformed steel bar on the inner peripheral surface corresponding to the deformed steel bar. For this reason, even if the wedge piece is tightened with the taper hole, the ridge simply hits the recess as a whole.

しかも、異形棒鋼の表面の節の大きさや高さ、間隔など、節の態様にはメーカーや製品ごとに大きなばらつきがある。   Moreover, there are large variations in the form of the nodes, such as the size, height, and spacing of the nodes on the surface of the deformed steel bar, from manufacturer to manufacturer.

このため、特許文献1の棒鋼接続具で接続を行うためには、メーカーや太さなどに応じて楔片を多種類用意する必要があるのはもちろんのこと、次のような難点がある。   For this reason, in order to connect with the steel bar connector of patent document 1, it is necessary to prepare many kinds of wedge pieces according to a manufacturer, thickness, etc., and there exist the following difficulties.

つまり、前述のように異形棒鋼の節の態様にはばらつきがあるので、凸条と凹所が単独ではぴたりと嵌まり合う部分があったと仮定しても、楔片が当たる部分全体でみるとすべての凸条と凹所がぴたりと嵌まり合うことは稀有であり、どこにどの程度の隙間ができるかわからない不安定な嵌合となる。このような不安定な嵌合状態は、複数の凸条と凹所が嵌合し合うように構成されたものであるので、テーパ孔できつく締め付けたとしても同じである。埋めやすい隙間を埋める方向に変位することになる。   In other words, as described above, there are variations in the shape of the section of the deformed steel bar, so even if it is assumed that there is a part where the ridges and recesses fit snugly by itself, looking at the whole part where the wedge piece hits It is rare that all the ridges and recesses fit together, resulting in an unstable fitting that does not know where and how much gap is created. Such an unstable fitting state is configured so that a plurality of ridges and recesses are fitted to each other, and therefore the same is true even if the taper hole is tightened tightly. It will be displaced in the direction of filling the gap that is easy to fill.

このため、異形棒鋼の圧縮方向や伸長方向に荷重がかかると隙間の存在と嵌合の不安定さから、ずれが生じる。つまり、接続方向でのすべり(伸縮方向のがたつきや伸び縮み)のない接続は実現できなかった。   For this reason, when a load is applied in the compression direction or the extension direction of the deformed steel bar, a deviation occurs due to the presence of a gap and instability of fitting. In other words, a connection without slipping in the connecting direction (shaking or stretching in the expansion / contraction direction) could not be realized.

実開昭52-99615号公報Japanese Utility Model Publication No. 52-99615

この発明は、異形棒鋼の接続がすべりなく強固に行えるようにすることを主な目的とする。   The main object of the present invention is to make it possible to firmly connect the deformed steel bars without slipping.

そのための手段は、異形棒鋼の先端部を接続するための異形棒鋼接続構造であって、前記異形棒鋼の外周面における先端より後端側の部位に配置される複数で一組の係止部材と、前記異形棒鋼に挿嵌されて前記係止部材を取り囲む筒状のカプラを備え、前記係止部材が、内周面に形成されて前記異形棒鋼の節間に前記節との間に隙間をあけて入り込む前記節の高さよりも高い山部と、外周面に形成されて前記カプラに押さえられる先端側ほど大径の傾斜面を有し、前記山部の頂面が、前記異形棒鋼の長手方向に対応する軸方向に平らであるとともに、前記頂面の前記軸方向の両側に角部を有し、前記カプラが、前記異形棒鋼の先端側に向けての相対移動で前記係止部材の前記傾斜面を前記異形棒鋼側に押圧する先端側ほど大径の円錐状面と、接続相手に対する結合用のねじ部を、軸方向の後端側から先端側に順に有し、前記異形棒鋼の先端を前記係止部材よりも突出させた状態で前記カプラが結合する被結合部材の内周側の対向部に対して直接又は間接に前記異形棒鋼の先端面を突き当てる異形棒鋼接続構造である。 Means for this is a profiled steel bar connection structure for connecting a front end portion of the deformed steel bars, a plurality of a pair of locking members disposed at a site rearward of the tip definitive on the outer peripheral surface of the deformed steel bar And a cylindrical coupler that is inserted into the deformed steel bar and surrounds the locking member, and the locking member is formed on an inner peripheral surface and is a gap between the nodes of the deformed steel bar. A crest that is higher than the height of the node that enters with a gap, and an inclined surface that is formed on an outer peripheral surface and that has a larger diameter toward the tip side that is pressed by the coupler, and the top surface of the crest is made of the deformed steel bar. The locking member is flat in the axial direction corresponding to the longitudinal direction and has corners on both sides in the axial direction of the top surface, and the coupler moves relative to the distal end side of the deformed steel bar. A conical surface with a larger diameter toward the tip side that presses the inclined surface of the deformed steel bar, A threaded portion for coupling to connection partner, from the rear end side in the axial direction and perforated in order to distally of the coupling member in which the coupler tip of the deformed steel bars in a state of protruding than said locking member is attached This is a deformed steel bar connection structure in which the front end surface of the deformed steel bar is directly or indirectly abutted against the inner peripheral facing portion .

この構成では、カプラのねじ部を接続相手に螺合することによって、異形棒鋼の外周面に配置された係止部材の傾斜面がカプラの円錐状面で押圧される。これによって係止部材が異形棒鋼の先端側へ節間に設けた隙間を利用して相対移動するとともに、異形棒鋼に対して押しつけられる。相対移動した係止部材は、山部を節に係止するとともに、山部を含めた内周面を局所的に押しつける。   In this configuration, the inclined surface of the locking member disposed on the outer peripheral surface of the deformed steel bar is pressed by the conical surface of the coupler by screwing the threaded portion of the coupler to the connection partner. As a result, the locking member moves relative to the distal end side of the deformed steel bar using the gap provided between the nodes and is pressed against the deformed steel bar. The relatively moved locking member locks the peak portion to the node and locally presses the inner peripheral surface including the peak portion.

以上のようにこの発明によれば、係止部材は異形棒鋼の先端側へ移動しつつ異形棒鋼側に押し付けられて内周面を局所的に強く当てるので、がたつきのない固定が可能であり、異形棒鋼の接続をすべりなく強固に行うことができる。   As described above, according to the present invention, the locking member is pressed against the deformed steel bar side while moving to the front end side of the deformed steel bar, so that the inner peripheral surface is locally strongly applied, so that it can be fixed without rattling. The deformed steel bar can be firmly connected without slipping.

異形棒鋼同士を接続する接続前の状態を側面側から見た断面図。Sectional drawing which looked at the state before the connection which connects deformed steel bars from the side surface side. 異形棒鋼同士を接続する接続前の状態の斜視図。The perspective view of the state before the connection which connects deformed steel bars. 異形棒鋼と係止部材の関係を示す断面図。Sectional drawing which shows the relationship between a deformed steel bar and a locking member. 異形棒鋼と係止部材の関係を示す断面図。Sectional drawing which shows the relationship between a deformed steel bar and a locking member. 要部と作用を示す断面図。Sectional drawing which shows a principal part and an effect | action. 異形棒鋼同士の接続状態を示す断面図。Sectional drawing which shows the connection state of deformed steel bars. 異形棒鋼接続構造の他の例を示す断面図。Sectional drawing which shows the other example of a deformed steel bar connection structure. 異形棒鋼接続構造の他の例を示す断面図。Sectional drawing which shows the other example of a deformed steel bar connection structure. 異形棒鋼接続構造の他の例を示す断面図。Sectional drawing which shows the other example of a deformed steel bar connection structure. 異形棒鋼接続構造の他の例を示す断面図。Sectional drawing which shows the other example of a deformed steel bar connection structure. ロック部材の斜視図。The perspective view of a locking member. 異形棒鋼接続構造の他の例を示す断面図。Sectional drawing which shows the other example of a deformed steel bar connection structure. 異形棒鋼接続具の他の例を示す断面図。Sectional drawing which shows the other example of a deformed steel bar connector. 異形棒鋼接続具の他の例を示す断面図。Sectional drawing which shows the other example of a deformed steel bar connector. 異形棒鋼接続具の他の例を示す断面図。Sectional drawing which shows the other example of a deformed steel bar connector. 異形棒鋼と他の部材とを接続する異形棒鋼接続具の断面図。Sectional drawing of the deformed steel bar connector which connects a deformed steel bar and another member. 異形棒鋼と他の部材とを接続する他の例に係る異形棒鋼接続具の断面図。Sectional drawing of the deformed steel bar connector which concerns on the other example which connects a deformed steel bar and another member. 異形棒鋼と他の部材とを接続する他の例に係る異形棒鋼接続具の断面図。Sectional drawing of the deformed steel bar connector which concerns on the other example which connects a deformed steel bar and another member. 異形棒鋼と他の部材とを接続する他の例に係る異形棒鋼接続具の断面図。Sectional drawing of the deformed steel bar connector which concerns on the other example which connects a deformed steel bar and another member. 異形棒鋼と他の部材とを接続する他の例に係る異形棒鋼接続具の断面図。Sectional drawing of the deformed steel bar connector which concerns on the other example which connects a deformed steel bar and another member. 異形棒鋼同士を接続する他の例に係る異形棒鋼接続具の断面図。Sectional drawing of the deformed steel bar connector which concerns on the other example which connects deformed steel bars.

この発明を実施するための一形態を、以下図面を用いて説明する。   An embodiment for carrying out the present invention will be described below with reference to the drawings.

異形棒鋼接続具11は、異形棒鋼12の先端部13を接続するためものであり、図1等に示したように異形棒鋼12同士を接続したり、図16等に示したように異形棒鋼12と他の部材を接続したりする。   The deformed steel bar connector 11 is for connecting the tip end portion 13 of the deformed steel bar 12, and connects the deformed steel bars 12 to each other as shown in FIG. 1 or the like, or as shown in FIG. And other members are connected.

まず、異形棒鋼12同士を軸方向に接続する例を説明する。   First, an example in which the deformed steel bars 12 are connected in the axial direction will be described.

図1に異形棒鋼12同士を接続する接続前の状態を側面側から見た断面図を示す。異形棒鋼12は、接続前の状態を示す斜視図である図2に示したように、断面円形の異形棒鋼本体部14の表面に、縦リブ15と、縦リブ15に節16を備えた形状である。縦リブ15は、長手方向全体にわたって、断面形状の中心を挟んで相反する2箇所に所定の大きさで形成されている。節16は、周方向に沿って半円弧状に所定の大きさで形成され、異形棒鋼本体部14の長手方向に沿って所定の等間隔に配設されている。また縦リブ15を挟んで形成される節16は、縦リブ15を挟む一方側と他方側とで段違いに形成されている。   FIG. 1 is a cross-sectional view of a state before connection in which the deformed steel bars 12 are connected to each other as viewed from the side. As shown in FIG. 2 which is a perspective view showing a state before connection, the deformed steel bar 12 has a shape in which a vertical rib 15 and a node 16 are provided on the vertical rib 15 on the surface of the deformed steel bar main body 14 having a circular cross section. It is. The vertical ribs 15 are formed in a predetermined size at two opposite positions across the center of the cross-sectional shape over the entire longitudinal direction. The nodes 16 are formed in a semicircular arc shape with a predetermined size along the circumferential direction, and are arranged at predetermined equal intervals along the longitudinal direction of the deformed steel bar main body portion 14. Further, the nodes 16 formed with the vertical ribs 15 sandwiched between the one side and the other side of the vertical ribs 15 are formed in a step difference.

異形棒鋼接続具11は、異形棒鋼12の外周側に配置される係止部材31と、異形棒鋼12に挿嵌されて係止部材31を取り囲む筒状のカプラ51で構成される。   The deformed steel bar connector 11 includes a locking member 31 disposed on the outer peripheral side of the deformed steel bar 12 and a cylindrical coupler 51 that is inserted into the deformed steel bar 12 and surrounds the locking member 31.

係止部材31は、異形棒鋼12における縦リブ15を挟む一方側と他方側をそれぞれ覆う断面半円弧状に湾曲した板状に形成されており、一対で異形棒鋼12を直径方向に挟む。係止部材31の内周面には、異形棒鋼12の節16間に節16との間に隙間32をあけて入り込む山部33が形成され(図3参照)、外周面にはカプラ51に押さえられる先端側(異形棒鋼12の先端部13に対応する側)ほど大径の傾斜面34が形成されている。   The locking member 31 is formed in a plate shape that is curved in a semicircular cross-sectional shape that covers one side and the other side of the deformed steel bar 12 that sandwich the vertical rib 15, and sandwiches the deformed steel bar 12 in a diametrical direction. On the inner peripheral surface of the locking member 31, a crest 33 is formed between the joints 16 of the deformed steel bar 12 with a gap 32 between the joints 16 (see FIG. 3). An inclined surface 34 having a larger diameter is formed on the leading end side (the side corresponding to the leading end portion 13 of the deformed steel bar 12).

山部33は、係止部材31における異形棒鋼12の長手方向に対応する軸方向に等間隔で複数形成される。山部33の個数は適宜設定されるが、図示例では3個としている。つまり、断面半円弧状をなす本体部35の内周面の軸方向の端から端までの間に3個の山部33が等間隔に形成されている。図示例では山部33を軸方向の両端に形成しているので、換言すれば2個の谷部36を有する形状であるともいえる。   A plurality of peak portions 33 are formed at equal intervals in the axial direction corresponding to the longitudinal direction of the deformed steel bar 12 in the locking member 31. The number of peak portions 33 is set as appropriate, but is three in the illustrated example. That is, three crests 33 are formed at equal intervals between the ends in the axial direction of the inner peripheral surface of the main body 35 having a semicircular cross section. In the illustrated example, the crests 33 are formed at both ends in the axial direction. In other words, it can be said that the shape has two troughs 36.

山部33の形状は、図3の(a)、(b)に示したように、半円弧状本体部の内周側に向けて膨出させたものであり、最も内周側に位置する頂面33aは、軸方向に平らである。また、3個の山部33間には2個の谷部36が形成されることになり、谷部36の最も外周側に位置する谷底面36aも軸方向に平らである。   As shown in FIGS. 3 (a) and 3 (b), the shape of the peak portion 33 bulges toward the inner peripheral side of the semicircular arc main body portion, and is located on the innermost peripheral side. The top surface 33a is flat in the axial direction. Two troughs 36 are formed between the three crests 33, and a trough bottom surface 36a located on the outermost peripheral side of the trough 36 is also flat in the axial direction.

山部33のうち、軸方向両端に位置する2個の山部33の軸方向両端の側面は、頂面33aに対して垂直の垂直面で構成されるが、谷部36に連続する他の面は谷底面36aに向けて斜めの傾斜面で構成されて、軸方向中間に位置する1個の山部33とこの山部33を挟む2個の谷部36の断面形状は等脚台形である。そして、山部33の頂面33aの軸方向の両側に角部33bが形成されている。角部33bは、面と面が交差してできる部分であり、係止部材31の軸方向両端に位置する角部33bは直角であり、それ以外の角部33bは鈍角である。   Among the crests 33, the side surfaces at both axial ends of the two crests 33 located at both ends in the axial direction are constituted by vertical planes perpendicular to the top surface 33 a, The surface is composed of an inclined surface inclined toward the bottom surface 36a, and the cross-sectional shape of one peak portion 33 located in the middle of the axial direction and the two valley portions 36 sandwiching the peak portion 33 is an isosceles trapezoid. is there. And the corner | angular part 33b is formed in the both sides of the axial direction of the top face 33a of the peak part 33. FIG. The corner portion 33b is a portion formed by intersecting the surfaces, the corner portion 33b located at both ends in the axial direction of the locking member 31 is a right angle, and the other corner portions 33b are obtuse angles.

角部33cは、図4に示したように、山部33の周方向の両端にも形成される。なお、図4の(a)は、係止部材31を径の小さい方の端面側から軸方向にみた断面図であり、(b)は軸方向と直角の側面方向からみた断面図であって、いずれも一組の係止部材31を異形棒鋼12から離した状態を示している。   As shown in FIG. 4, the corner portion 33 c is also formed at both ends of the crest portion 33 in the circumferential direction. 4A is a cross-sectional view of the locking member 31 as viewed in the axial direction from the end surface having the smaller diameter, and FIG. 4B is a cross-sectional view as viewed from the side surface perpendicular to the axial direction. In any case, the pair of locking members 31 are separated from the deformed steel bar 12.

山部33と谷部36の各部の大きさについて、図3を用いて説明する。   The magnitude | size of each part of the peak part 33 and the trough part 36 is demonstrated using FIG.

異形棒鋼12の節16の高さh1、幅w1、間隔w2などの値には一定の幅があり、メーカーや製品によってもばらつきがあるので、そのばらつきを考慮して大きさを設定する。   Values such as the height h1, width w1, and interval w2 of the nodes 16 of the deformed steel bar 12 have a certain width and vary depending on manufacturers and products. Therefore, the size is set in consideration of the variation.

山部33の頂面33aの幅w3は、対応する径のどの異形棒鋼12の節16間にも収まるとともに、節16の間隔w2よりも小さく設定される。山部33における外周側であって谷底面36aに近い基部は、対応する径のどの異形棒鋼12の節16同士の間に入り込んだときでも、節16との間に隙間32が形成される大きさである。山部33の頂面33aから谷部36の谷底面36aに向かう傾斜面の傾斜は、対応する径のどの異形棒鋼12の節16における対向する傾斜面の傾斜よりも急角度に設定されるのが好ましい。山部33の頂面33a同士の間隔w4は、対応する径のどの異形棒鋼12の節16の幅w1よりも大きく、すべての山部33の頂面33aが異形棒鋼12の節16間に位置するのを許容する間隔に設定される。   The width w3 of the top surface 33a of the peak portion 33 is set to be smaller than the interval w2 between the joints 16 and fits between the joints 16 of any deformed steel bar 12 having a corresponding diameter. The base portion close to the valley bottom surface 36a on the outer peripheral side of the peak portion 33 is large enough to form a gap 32 between the nodes 16 even when entering between the nodes 16 of any deformed steel bar 12 having a corresponding diameter. That's it. The inclination of the inclined surface from the top surface 33a of the peak portion 33 toward the valley bottom surface 36a of the valley portion 36 is set to be steeper than the inclination of the opposing inclined surface at the node 16 of any deformed steel bar 12 of the corresponding diameter. Is preferred. The interval w4 between the top surfaces 33a of the peak portions 33 is larger than the width w1 of the nodes 16 of any deformed steel bar 12 of the corresponding diameter, and the top surfaces 33a of all the peak portions 33 are located between the nodes 16 of the deformed steel bar 12. It is set to an interval that allows it to do.

具体的な数値をあげれば、D25の異形棒鋼12の場合には、山部33の頂面33aの幅w3を4.5mm、谷部36の谷底面36aの幅w5を6.5mm、山部33と谷部36との間の傾斜面の幅w6を2.75mmとするとよい。D25以外の他の径の異形棒鋼12の場合には、各部の大きさは前述例の数値に準じて設定可能である。   Specifically, in the case of the deformed steel bar 12 of D25, the width w3 of the top surface 33a of the mountain portion 33 is 4.5 mm, the width w5 of the valley bottom surface 36a of the valley portion 36 is 6.5 mm, and the mountain portion. The width w6 of the inclined surface between 33 and the valley portion 36 is preferably 2.75 mm. In the case of the deformed steel bar 12 having a diameter other than D25, the size of each part can be set according to the numerical values in the above-described example.

山部33の高さ又は谷部36の深さについては、図3の(a)に示したように節16の高さh1よりも高く設定する場合と、図3の(b)に示したように節16の高さh1よりも低く設定する場合が考えられるが、すべりのない強固な固定のためには前者(図3の(a))のようにするのが好ましい。角部33b,33cを積極的かつ効果的に異形棒鋼12の表面に作用させることができるからである。   About the height of the peak part 33 or the depth of the trough part 36, as shown to (a) of FIG. 3, when setting higher than the height h1 of the node 16, it showed to (b) of FIG. In this case, the height may be set lower than the height h1 of the node 16, but the former (FIG. 3 (a)) is preferable for firm fixation without slipping. This is because the corners 33b and 33c can be positively and effectively applied to the surface of the deformed steel bar 12.

このような山部33と谷部36を有する係止部材31の本体部35は、図4の(a)に仮想線で示したように、異形棒鋼12の外周面に配置したときに本体部35同士の間に隙間ができるように、正確な半円よりも若干小さく形成されている。   The main body portion 35 of the locking member 31 having such peak portions 33 and trough portions 36 is disposed on the outer peripheral surface of the deformed steel bar 12, as indicated by a virtual line in FIG. It is formed slightly smaller than an accurate semicircle so that a gap is formed between the 35.

係止部材31の外周面の傾斜面34の傾斜角は、異形棒鋼12の節16間の間隔w2や山部33の頂面33aの幅w3、頂面33a同士の間隔w4などに応じて、係止部材31を異形棒鋼12上における大径にされた先端側(異形棒鋼12の先端側)への相対移動で、山部33を節16に係止させ得る距離を移動できるように設定される。前述のD25の径に適した具体例でいえば、図3に示したように、係止部材31の軸方向の長さL1は37.5mmとなり、傾斜面34の傾斜角は、大径側の端と小径側の端での高低差h2を1.5mmから2.5mm程度、例えば2mmにする角度とするとよい。   The inclination angle of the inclined surface 34 of the outer peripheral surface of the locking member 31 depends on the interval w2 between the nodes 16 of the deformed steel bar 12, the width w3 of the top surface 33a of the peak 33, the interval w4 between the top surfaces 33a, etc. It is set so that the distance at which the peak portion 33 can be locked to the node 16 can be moved by relative movement of the locking member 31 to the distal end side (the distal end side of the deformed steel bar 12) having a large diameter on the deformed steel bar 12. The Speaking of a specific example suitable for the diameter D25 described above, as shown in FIG. 3, the axial length L1 of the locking member 31 is 37.5 mm, and the inclination angle of the inclined surface 34 is larger than the larger diameter side. The height difference h2 between the end and the end on the small diameter side may be set to an angle of about 1.5 mm to 2.5 mm, for example, 2 mm.

このような構成の係止部材31を取り囲むカプラ51は、図2に示したように断面六角形をなす長ナット状に形成されており、六角の外周面52を有するカプラ51の外径は、異形棒鋼12の長手方向に対応する軸方向の全体にわたって同一である。   The coupler 51 surrounding the locking member 31 having such a configuration is formed in a long nut shape having a hexagonal cross section as shown in FIG. 2, and the outer diameter of the coupler 51 having the hexagonal outer peripheral surface 52 is as follows. It is the same throughout the axial direction corresponding to the longitudinal direction of the deformed steel bar 12.

カプラ51の内周面には、図5に示したように、異形棒鋼12の先端側に向けての相対移動で係止部材31の傾斜面34を異形棒鋼12側に押圧する先端側ほど大径の円錐状面53と、接続相手に対する結合用のねじ部54を、軸方向の後端側から先端側に順に有している。   On the inner peripheral surface of the coupler 51, as shown in FIG. 5, the tip end side that presses the inclined surface 34 of the locking member 31 to the deformed bar 12 side by relative movement toward the tip side of the deformed bar 12 is larger. A conical surface 53 having a diameter and a screw portion 54 for coupling to a connection partner are sequentially provided from the rear end side in the axial direction to the front end side.

円錐状面53は、カプラ51の後端から軸方向(長手方向)の中間位置まで形成され、前述した係止部材31の傾斜面34と同一角度の傾斜を有している。円錐状面53の直径は、異形棒鋼12の表面に一組の係止部材31を被せて配置した状態で係止部材31の傾斜面34に接して傾斜面34に押圧力を作用させられる大きさである。また円錐状面53の軸方向における長さは、係止部材31の長さL1(図3参照)よりも長い。   The conical surface 53 is formed from the rear end of the coupler 51 to an intermediate position in the axial direction (longitudinal direction), and has an inclination of the same angle as the inclined surface 34 of the locking member 31 described above. The diameter of the conical surface 53 is such that a pressing force can be applied to the inclined surface 34 in contact with the inclined surface 34 of the locking member 31 in a state where the pair of locking members 31 is placed on the surface of the deformed steel bar 12. That's it. Further, the length of the conical surface 53 in the axial direction is longer than the length L1 of the locking member 31 (see FIG. 3).

円錐状面53は先端側ほど大径であるので、長くすればするほどカプラ51の直径が大きくなる。このため、カプラ51の大型化を避ける観点からは、円錐状面53の軸方向における長さは係止部材31の山部33の数に応じて設定するとよい。前述のように係止部材31の山部33の数が3個である場合には、円錐状面53の軸方向の長さは、例えば異形棒鋼12の節16が3個から4個ほど収まる長さに設定される。   Since the conical surface 53 has a larger diameter on the tip side, the longer the length, the larger the diameter of the coupler 51. For this reason, from the viewpoint of avoiding an increase in the size of the coupler 51, the length of the conical surface 53 in the axial direction may be set according to the number of peak portions 33 of the locking member 31. As described above, when the number of the crest portions 33 of the locking member 31 is three, the axial length of the conical surface 53 is, for example, about 3 to 4 nodes 16 of the deformed steel bar 12. Set to length.

ねじ部54は雌ねじで構成され、カプラ51の先端から幅方向(長手方向)の中間位置まで形成されている。ねじ部54の内径は、接続相手に螺合できる大きさであり、円錐状面53の大径側の端よりも大径に形成される。   The screw portion 54 is formed of a female screw and is formed from the tip of the coupler 51 to an intermediate position in the width direction (longitudinal direction). The inner diameter of the threaded portion 54 is large enough to be screwed into the connection partner, and is formed to have a larger diameter than the end on the large diameter side of the conical surface 53.

ねじ部54の長さは、カプラ51を接続相手に螺合したときに、係止部材31を異形棒鋼12の表面に沿って先端方向へ移動するとともに、この係止部材31の移動によっての異形棒鋼12に対して先端方向へ荷重をかけられ、十分な掛かり代を得られる長さである。具体的には、係止部材31が節16間に入り込む山部33を有しており、カプラ51と接続相手は相互に螺合するので、カプラ51のねじ部54の長さは少なくとも節16間の間隔w2(図3参照)の2倍〜4倍程度の長さとする。   The length of the threaded portion 54 is such that when the coupler 51 is screwed to the connection partner, the locking member 31 moves in the distal direction along the surface of the deformed steel bar 12 and is deformed by the movement of the locking member 31. It is a length that allows a sufficient load to be obtained by applying a load to the steel bar 12 in the distal direction. Specifically, the locking member 31 has a crest 33 that enters between the nodes 16, and the coupler 51 and the connection partner are screwed together, so that the length of the screw portion 54 of the coupler 51 is at least the node 16. The length is about 2 to 4 times the interval w2 (see FIG. 3).

ねじ部54を有する部分の厚さは、ねじ部54を形成しても必要な強度が得られるように十分な厚さに設定される。   The thickness of the portion having the screw portion 54 is set to a sufficient thickness so that a necessary strength can be obtained even if the screw portion 54 is formed.

ねじ部54と円錐状面53との間は移行部55であり、円錐状面53の大径部分の端からねじ部54の端までを連続される傾斜面で形成されている。   A transition portion 55 is formed between the screw portion 54 and the conical surface 53, and is formed by an inclined surface that continues from the end of the large diameter portion of the conical surface 53 to the end of the screw portion 54.

カプラ51が結合する接続相手は、図1、図2に示したように、カプラ51と同様に筒状に形成された被結合部材71である。そして異形棒鋼接続具11が取り付けられる異形棒鋼12とは別の異形棒鋼12(以下、「相手方棒鋼12a」という。)を保持するため、被結合部材71は異形棒鋼接続具11の係止部材31と同じ構成の係止部材31を備える。なお、相手方棒鋼12aの保持に用いられる係止部材31は、前述の異形棒鋼接続具11の係止部材31と構成が同一であるので、同一の符号を付してその詳しい説明を省略する。   As shown in FIGS. 1 and 2, the connection partner to which the coupler 51 is coupled is a coupled member 71 formed in a cylindrical shape as in the coupler 51. Then, in order to hold a deformed bar 12 different from the deformed bar 12 to which the deformed bar connecting tool 11 is attached (hereinafter referred to as “mating bar 12a”), the coupled member 71 is a locking member 31 of the deformed bar connecting tool 11. And a locking member 31 having the same configuration as the above. In addition, since the latching member 31 used for holding | maintaining the other party bar 12a is the same structure as the latching member 31 of the above-mentioned deformed steel bar connector 11, the same code | symbol is attached | subjected and the detailed description is abbreviate | omitted.

つまり被結合部材71は、相手方棒鋼12aに挿嵌されて係止部材31を取り囲む筒状に形成され、相手方棒鋼12aの先端側に向けての相対移動で係止部材31の傾斜面34を相手方棒鋼12a側に押圧する先端側ほど大径の円錐状面72と、カプラ51のねじ部54に螺合する被螺合部73が形成されている。   That is, the coupled member 71 is formed in a cylindrical shape that is fitted to the counterpart steel bar 12a and surrounds the locking member 31, and the inclined surface 34 of the locking member 31 is moved to the counterpart side by relative movement toward the distal end side of the counter steel bar 12a. A conical surface 72 having a larger diameter and a threaded portion 73 that is threadedly engaged with the threaded portion 54 of the coupler 51 are formed on the distal end side pressed toward the steel bar 12a.

係止部材31が異形棒鋼接続具11と同一構成であるので、被結合部材71の円錐状面72の態様もカプラ51の円錐状面53と同一である。このため、円錐状面72の詳しい説明は省略する。   Since the locking member 31 has the same configuration as that of the deformed steel bar connector 11, the conical surface 72 of the coupled member 71 is also the same as the conical surface 53 of the coupler 51. For this reason, detailed description of the conical surface 72 is omitted.

被螺合部73は、カプラ51のねじ部54に螺合するものであるため、雄ねじで構成される。つまり、被結合部材71の被螺合部73は、外周面が断面円形の円筒状に形成されており、外周面に雄ねじが形成されている。円錐状面72を有する後端側の外周面74はカプラ51の外周面52と同様に六角のナット状である。後端側の六角の外周面74の大きさはカプラ51の外周面52と同一径に形成される。   Since the screwed portion 73 is screwed into the screw portion 54 of the coupler 51, it is constituted by a male screw. That is, the threaded portion 73 of the coupled member 71 is formed in a cylindrical shape with a circular outer peripheral surface, and a male screw is formed on the outer peripheral surface. Similar to the outer peripheral surface 52 of the coupler 51, the outer peripheral surface 74 on the rear end side having the conical surface 72 has a hexagonal nut shape. The hexagonal outer peripheral surface 74 on the rear end side is formed to have the same diameter as the outer peripheral surface 52 of the coupler 51.

被螺合部73の厚みに関しては、必要な剛性が得られるようにカプラ51のねじ部54を有する部分と同様に必要な厚さを確保する。この点、被結合部材71は円錐状面72と被螺合部73を軸方向の後端側から先端側に順に形成して周方向で重ならない構成としているので、被螺合部73の内周側は、異形棒鋼12や相手方棒鋼12aのみが入り得る空間である。このため、径を必要以上に大きくしなくとも被螺合部73の厚みを確保しやすい。   As for the thickness of the threaded portion 73, the necessary thickness is ensured in the same manner as the portion having the threaded portion 54 of the coupler 51 so as to obtain the required rigidity. In this respect, the coupled member 71 has a conical surface 72 and a threaded portion 73 formed in order from the rear end side in the axial direction to the distal end side so as not to overlap in the circumferential direction. The circumferential side is a space in which only the deformed steel bar 12 and the counterpart steel bar 12a can enter. For this reason, it is easy to ensure the thickness of the threaded portion 73 without increasing the diameter more than necessary.

被螺合部73の内周側の空間は、前述のように異形棒鋼12や相手方棒鋼12aのみが入り得る空間であり、この空間に相手方棒鋼12aの先端面13aを位置させれば、異形棒鋼12の先端面13aを突き当てる対向部75(相手方棒鋼12aの先端面13a)が形成されることになる。   As described above, the space on the inner peripheral side of the threaded portion 73 is a space in which only the deformed steel bar 12 or the counterpart steel bar 12a can enter. If the tip end surface 13a of the counterpart steel bar 12a is positioned in this space, the deformed steel bar 12a is located. The opposing part 75 (front-end surface 13a of the other party steel bar 12a) which abuts 12 front-end surfaces 13a will be formed.

以上のような構成の異形棒鋼接続具11と、被結合部材71と、被結合部材71に取り囲まれる係止部材31を用いて異形棒鋼12を相手方棒鋼12aに接続するには、次のように行う。   In order to connect the deformed steel bar 12 to the counterpart steel bar 12a using the deformed steel bar connector 11 having the above-described configuration, the coupled member 71, and the locking member 31 surrounded by the coupled member 71, as follows. Do.

はじめに、図2、図3に示したように、異形棒鋼12の先端部13にカプラ51を挿嵌する。カプラ51の向きは、ねじ部54を異形棒鋼12の先端部13側に対応させる。   First, as shown in FIG. 2 and FIG. 3, a coupler 51 is inserted into the distal end portion 13 of the deformed steel bar 12. The direction of the coupler 51 causes the threaded portion 54 to correspond to the distal end portion 13 side of the deformed steel bar 12.

同様に、相手方棒鋼12aの先端部13に被結合部材71を挿嵌する。このときも、被螺合部73を相手方棒鋼12aの先端部13側に向ける。   Similarly, the member to be coupled 71 is inserted into the tip portion 13 of the counterpart steel bar 12a. Also at this time, the threaded portion 73 is directed to the tip end 13 side of the counterpart steel bar 12a.

つづいて異形棒鋼12と相手方棒鋼12aの先端部13の外周面にそれぞれ一組の係止部材31を配置する。異形棒鋼12の係止部材31はカプラ51で覆い、相手方棒鋼12aの係止部材31は被結合部材71で覆う。このとき、係止部材31の位置は、カプラ51及び被結合部材71の円錐状面53,72の位置と、カプラ51のねじ部54に対する異形棒鋼12の先端面13aの位置と、被結合部材71の被螺合部73に対する相手方棒鋼12aの先端面13aの位置とを考慮して、カプラ51のねじ部54と被結合部材71の被螺合部73とが必要な掛かり代以上に螺合が進んだとき異形棒鋼12の先端面13aと相手方棒鋼12aの先端面13aとが互い突き合うように設定する。   Subsequently, a set of locking members 31 are arranged on the outer peripheral surfaces of the end portions 13 of the deformed steel bar 12 and the counterpart steel bar 12a. The locking member 31 of the deformed steel bar 12 is covered with a coupler 51, and the locking member 31 of the counterpart steel bar 12 a is covered with a member 71 to be coupled. At this time, the position of the locking member 31 includes the positions of the conical surfaces 53 and 72 of the coupler 51 and the coupled member 71, the position of the distal end surface 13a of the deformed steel bar 12 with respect to the threaded portion 54 of the coupler 51, and the coupled member. In consideration of the position of the distal end surface 13a of the counterpart steel bar 12a with respect to the threaded portion 73 of 71, the threaded portion 54 of the coupler 51 and the threaded portion 73 of the coupled member 71 are screwed more than necessary. Is set so that the tip surface 13a of the deformed steel bar 12 and the tip surface 13a of the mating steel bar 12a face each other.

この状態で、図1に仮想線で示したようにカプラ51のねじ部54と被結合部材71の被螺合部73を互いに螺合させると、カプラ51と被結合部材71は互いに接近し合い、円錐状面53,72によってそれぞれ係止部材31を軸方向先端側に移動させると同時に異形棒鋼12又は相手方棒鋼12a側に押しつける(図5参照)。係止部材31の山部33の角部33b,33cと異形棒鋼12又は相手方棒鋼12aの節16との係合と、山部33の異形棒鋼12又は相手方棒鋼12aに対する食い込みとで、係止部材31が異形棒鋼12又は相手方棒鋼12a上で相対移動不可能となるまで、係止部材31の傾斜面34が円錐状面53,72によって押圧される。   In this state, when the threaded portion 54 of the coupler 51 and the threaded portion 73 of the coupled member 71 are screwed together as shown by phantom lines in FIG. 1, the coupler 51 and the coupled member 71 come close to each other. Then, the locking member 31 is moved to the tip end side in the axial direction by the conical surfaces 53 and 72 and simultaneously pressed against the deformed steel bar 12 or the counterpart steel bar 12a side (see FIG. 5). By engaging the corners 33b, 33c of the peak 33 of the locking member 31 with the node 16 of the deformed steel bar 12 or the counterpart steel bar 12a, and by biting the peak 33 with respect to the deformed steel bar 12 or the counter steel bar 12a, The inclined surface 34 of the locking member 31 is pressed by the conical surfaces 53 and 72 until 31 cannot move relative to the deformed steel bar 12 or the counterpart steel bar 12a.

これに同期して、先端側への移動によって異形棒鋼12と相手方棒鋼12aの先端面13a同士は図6に示したように当接し合い、圧縮方向に加圧される。相手方棒鋼12aの先端面13aは、予め形成されたものではないが、前述のようにして接続を行うときに、異形棒鋼12の先端面13aを突き当てる対向部75となる。   In synchronization with this, the distal end surfaces 13a of the deformed steel bar 12 and the counterpart steel bar 12a come into contact with each other as shown in FIG. 6 and are pressed in the compression direction. The front end surface 13a of the counterpart steel bar 12a is not formed in advance, but becomes a facing portion 75 that abuts the front end surface 13a of the deformed steel bar 12 when connecting as described above.

カプラ51と被結合部材71との螺合をしっかりと行って十分に締め込むことによって、係止部材31は異形棒鋼12又は相手方棒鋼12aの表面に食いつき、2組の係止部材31に挟まれる異形棒鋼12と相手方棒鋼12aの先端部13同士は圧縮方向に加圧される。図6において、異形棒鋼12と相手方棒鋼12aの先端面13aの近傍に付したドットは、加圧されている状態を描いたものである。   When the coupler 51 and the coupled member 71 are firmly screwed together and sufficiently tightened, the locking member 31 bites the surface of the deformed steel bar 12 or the counterpart steel bar 12a and is sandwiched between the two sets of locking members 31. The end portions 13 of the deformed steel bar 12 and the counterpart steel bar 12a are pressed in the compression direction. In FIG. 6, the dots attached in the vicinity of the distal end surface 13a of the deformed steel bar 12 and the counterpart steel bar 12a depict a state where pressure is applied.

係止部材31の山部33は、異形棒鋼12又は相手方棒鋼12aの節16間に節16との間に隙間32をあけて入り込む構造であるので、異形棒鋼12や相手方棒鋼12aのメーカー間や製品間の寸法のばらつきにもかかわりなく係止させられる。しかも、その係止は、異形棒鋼12又は相手方棒鋼12aに対しては軸方向に移動したうえで、引っ掛かりが得られる位置において山部33の角部33b,33cを中心とした部分を異形棒鋼12又は相手方棒鋼12aの表面に局所的に強く押し当てて行い、異形棒鋼12と相手方棒鋼12aの先端面13a同士が突き当たる方向に加圧力を生じさせる。このため、強力な係止が可能であり、異形棒鋼12又は相手方棒鋼12aにおける係止部材31が覆う部分の全体において係止部材31の安定した係止状態が得られる。   Since the peak portion 33 of the locking member 31 is structured to enter between the nodes 16 of the deformed steel bar 12 or the counterpart steel bar 12a with a gap 32 between them, between the manufacturers of the deformed steel bar 12 or the counterpart steel bar 12a, Locks regardless of dimensional variations between products. In addition, the locking is performed in the axial direction with respect to the deformed steel bar 12 or the counterpart steel bar 12a, and at the position where the catch is obtained, the portions centering on the corners 33b and 33c of the peak 33 are formed in the deformed steel bar 12. Or it presses strongly against the surface of the other party bar steel 12a locally, and a pressurizing force is produced in the direction where the deformed bar steel 12 and the front end surfaces 13a of the other party bar steel 12a abut against each other. For this reason, strong latching is possible and the stable latching state of the latching member 31 is obtained in the whole part which the latching member 31 covers in the deformed steel bar 12 or the counterpart steel bar 12a.

この結果、前述のような異形棒鋼接続具11を用いた異形棒鋼接続構造では、接続された異形棒鋼12の軸方向に圧縮の荷重が作用しても縮むことなく、伸長方向に引張の荷重が作用しても伸びることのない堅固な接続状態、換言すればすべりのない良好な接続状態が得られる。   As a result, in the deformed bar connecting structure using the deformed bar connecting tool 11 as described above, even if a compressive load is applied in the axial direction of the connected deformed bar 12, the tensile load is applied in the extending direction without contracting. A firm connection state that does not stretch even when acting, in other words, a good connection state without slipping is obtained.

また、接続状態においてカプラ51のねじ部54と被結合部材71の被螺合部73を有する部分が荷重を支えることになるが、前述のようにねじ部54と被螺合部73を有する部分の厚みを確保できる構造であるので、所望の強度を得られる。   Further, in the connected state, the portion having the threaded portion 54 of the coupler 51 and the threaded portion 73 of the coupled member 71 supports the load, but the portion having the threaded portion 54 and the threaded portion 73 as described above. Therefore, a desired strength can be obtained.

しかも、カプラ51の外周面52と表に現れる被結合部材71の外周面74は同一の六角形状で径の大きさも同じであるので、外観が美麗である。また被結合部材71の被螺合部73の内周側は、異形棒鋼12又は相手方棒鋼12aのみが存在する構造であるので、接続構造の大径化を回避できる。   Moreover, since the outer peripheral surface 52 of the coupler 51 and the outer peripheral surface 74 of the coupled member 71 appearing in the table are the same hexagonal shape and the same size, the appearance is beautiful. Further, since the inner peripheral side of the threaded portion 73 of the coupled member 71 has a structure in which only the deformed steel bar 12 or the counterpart steel bar 12a exists, an increase in the diameter of the connection structure can be avoided.

以上に説明した異形棒鋼接続具11は、一部に変更を加えたり、別の部材を付加したりして、図7から図12に示したような異形棒鋼接続構造を構成することができる。この説明において前述と同一の構成については同一の符号を付してその詳しい説明を省略する。   The deformed steel bar connector 11 described above can be partially modified or added with another member to form a deformed steel bar connection structure as shown in FIGS. 7 to 12. In this description, the same components as those described above are denoted by the same reference numerals, and detailed description thereof is omitted.

図7はカプラ51の軸方向の中間部、具体的には移行部55に対応する部位に貫通穴56を形成した例を示している。このようなカプラ51を備えた異形棒鋼接続具11を用いた異形棒鋼接続構造では、カプラ51の締め込みのあとに、貫通穴56からグラウト材76を注入して、カプラ51の内部空間における係止部材31で挟まれる部分にグラウト材76を充填する。   FIG. 7 shows an example in which a through hole 56 is formed in an intermediate portion of the coupler 51 in the axial direction, specifically, at a portion corresponding to the transition portion 55. In the deformed steel bar connecting structure using the deformed steel bar connector 11 provided with such a coupler 51, after the coupler 51 is tightened, the grout material 76 is injected from the through hole 56, and the engagement in the internal space of the coupler 51 is performed. The grout material 76 is filled in the portion sandwiched between the stop members 31.

グラウト材76を充填して係止部材31とカプラ51と異形棒鋼12(相手方棒鋼12a)との間に介在させることで、三者の位置関係が一層強力に定まるので、異形棒鋼接続具11との協働ですべりの発生を確実に抑制できる。   By filling the grout material 76 and interposing between the locking member 31, the coupler 51, and the deformed steel bar 12 (the counterpart steel bar 12 a), the positional relationship between the three members is determined more strongly. The occurrence of slips can be reliably suppressed through collaboration.

図7に示したようにカプラ51に貫通穴56を有した構成であると、図8に示したように異形棒鋼12と相手方棒鋼12aの先端面13a同士の間に隙間ができた場合でも、グラウト材76が係止部材31とカプラ51と異形棒鋼12と相手方棒鋼12aとの間に介在して、すべりのない接続状態を確実に得られる。   When the coupler 51 has a through hole 56 as shown in FIG. 7, even when a gap is formed between the end faces 13a of the deformed steel bar 12 and the counterpart steel bar 12a as shown in FIG. The grout material 76 is interposed between the locking member 31, the coupler 51, the deformed steel bar 12, and the counterpart steel bar 12 a, so that a non-slip connection state can be reliably obtained.

図9は、グラウトパイプ77を付加した異形棒鋼接続構造である。   FIG. 9 shows a deformed steel bar connection structure to which a grout pipe 77 is added.

この異形棒鋼接続構造は、カプラ51の軸方向の外側部にグラウト材76を備えるものであって、異形棒鋼12と相手方棒鋼12aの直径よりも大きくカプラ51の端面に当接する大きさの円筒形のグラウトパイプ77を用いる。   This deformed steel bar connection structure is provided with a grout material 76 on the outer side in the axial direction of the coupler 51, and has a cylindrical shape larger than the diameter of the deformed steel bar 12 and the counterpart steel bar 12a and in contact with the end face of the coupler 51. The grout pipe 77 is used.

つまり、カプラ51や被結合部材71を異形棒鋼12や相手方棒鋼12aに挿嵌するのに先立って、グラウトパイプ77を異形棒鋼12や相手方棒鋼12aに挿嵌しておき、係止部材31とカプラ51と被結合部材71による接続を行う。このあと、グラウトパイプ77の一端をカプラ51や被結合部材71の端面に押し当てて、グラウトパイプ77の他端を異形棒鋼12または相手方棒鋼12aに対してビニルテープ78等で固定したのち、グラウトパイプ77に形成された貫通穴77aからグラウト材76を注入して、グラウトパイプ77と異形棒鋼12または相手方棒鋼12aとの間にグラウト材76を介在させる。ビニルテープ78はグラウト材76の硬化後に除去する。   That is, prior to inserting the coupler 51 and the coupled member 71 into the deformed steel bar 12 or the counterpart steel bar 12a, the grout pipe 77 is inserted into the deformed steel bar 12 or the counterpart steel bar 12a, and the locking member 31 and the coupler are connected. 51 and the coupled member 71 are connected. Thereafter, one end of the grout pipe 77 is pressed against the end face of the coupler 51 or the coupled member 71, and the other end of the grout pipe 77 is fixed to the deformed steel bar 12 or the counterpart steel bar 12a with a vinyl tape 78 or the like. The grout material 76 is injected from the through hole 77a formed in the pipe 77, and the grout material 76 is interposed between the grout pipe 77 and the deformed steel bar 12 or the counterpart steel bar 12a. The vinyl tape 78 is removed after the grout material 76 is cured.

グラウトパイプ77内のグラウト材76は、カプラ51や被結合部材71の異形棒鋼12または相手方棒鋼12a上での位置決めを行い、異形棒鋼接続具11との協働ですべりの発生を確実に防止する。   The grout material 76 in the grout pipe 77 positions the coupler 51 and the coupled member 71 on the deformed steel bar 12 or the counterpart steel bar 12a, and reliably prevents the occurrence of slipping in cooperation with the deformed steel bar connector 11. .

図9では、カプラ51の内部空間にも図7、図8と同様にグラウト材76を充填した例を示したが、カプラ51の内部空間のグラウト材76は省略することもできる。   9 shows an example in which the grout material 76 is filled in the internal space of the coupler 51 as in FIGS. 7 and 8, the grout material 76 in the internal space of the coupler 51 can be omitted.

図10は、ロック部材81を付加した異形棒鋼接続構造である。   FIG. 10 shows a deformed steel bar connection structure to which a lock member 81 is added.

この異形棒鋼接続構造は、図9のグラウトパイプ77に代えて、ロック部材81を利用するものである。ロック部材81は、図11に示したように、係止ねじ部材82とナット83で構成される。   This deformed steel bar connection structure uses a lock member 81 instead of the grout pipe 77 of FIG. As shown in FIG. 11, the lock member 81 includes a locking screw member 82 and a nut 83.

係止ねじ部材82は、前述の係止部材31と同様に半円弧状をなす本体部84を有し、本体部84の内周面に前述の係止部材31と同一構造の山部85と谷部86を備える。本体部84の外周面には雄ねじ87が形成されている。   The locking screw member 82 has a main body portion 84 having a semicircular arc shape like the above-described locking member 31, and a mountain portion 85 having the same structure as the above-described locking member 31 on the inner peripheral surface of the main body portion 84. A trough 86 is provided. A male screw 87 is formed on the outer peripheral surface of the main body portion 84.

ナット83は、カプラ51や被結合部材71の六角の外周面52,74と同じ大きさの六角の外周面83aを有し、内周面には係止ねじ部材82の雄ねじ87が螺合する雌ねじ83bを有している。   The nut 83 has a hexagonal outer peripheral surface 83a having the same size as the hexagonal outer peripheral surfaces 52 and 74 of the coupler 51 and the coupled member 71, and the male screw 87 of the locking screw member 82 is screwed onto the inner peripheral surface. A female screw 83b is provided.

この異形棒鋼接続構造は、カプラ51や被結合部材71を異形棒鋼12や相手方棒鋼12aに挿嵌するのに先立って、ナット83を異形棒鋼12や相手方棒鋼12aに挿嵌しておき、係止部材31とカプラ51、被結合部材71による接続を行う。このあと、係止ねじ部材82を異形棒鋼12や相手方棒鋼12aの周面におけるカプラ51や被結合部材71の近傍に組みあわて、その上にナット83を螺合して、ナット83の端面をカプラ51や被結合部材71に押し当てる。   Prior to inserting the coupler 51 and the coupled member 71 into the deformed steel bar 12 or the mating steel bar 12a, the deformed steel bar connecting structure is configured such that the nut 83 is inserted into the deformed steel bar 12 or the mating steel bar 12a. Connection is made by the member 31, the coupler 51, and the coupled member 71. Thereafter, the locking screw member 82 is assembled in the vicinity of the coupler 51 or the coupled member 71 on the peripheral surface of the deformed steel bar 12 or the counterpart steel bar 12a, and the nut 83 is screwed thereon, and the end face of the nut 83 is connected to the coupler. 51 and the member 71 to be coupled.

ナット83の螺合によって、係止ねじ部材82は、ナット83の螺進方向とは反対側の方向に引っ張られ、係止ねじ部材82とカプラ51や被結合部材71の内周の係止部材31との間には引っ張り力が作用する。この結果、強固な固定状態が得られる。そのうえ、異形棒鋼12や相手方棒鋼12aにおける係止部材31の山部33が係止している部分に伸びが発生するとがたつきが生じるおそれがあるが、そのがたつきの発生を阻止して、すべりを確実に防止する。   When the nut 83 is screwed, the locking screw member 82 is pulled in the direction opposite to the screwing direction of the nut 83, and the locking screw member 82 and the locking member on the inner periphery of the coupler 51 and the coupled member 71 are pulled. A pulling force acts between 31 and 31. As a result, a strong fixed state is obtained. In addition, there is a possibility that rattling may occur when elongation occurs in the portion where the peak portion 33 of the locking member 31 in the deformed steel bar 12 or the counterpart steel bar 12a is locked, but the occurrence of rattling is prevented, Prevent slipping.

ロック部材81は複数つなげて備えてもよい。   A plurality of the lock members 81 may be connected.

図12は、図10に示した異形棒鋼接続構造の変形例である。   FIG. 12 is a modification of the deformed steel bar connection structure shown in FIG.

この異形棒鋼接続構造では、ロック部材81のナット83とカプラ51及び被結合部材71との間に、螺合構造が形成されている。具体的には、ナット83の一端部に、係止ねじ部材82を保持する雌ねじ83bよりも大径の結合用雌ねじ83cが形成され、この結合用雌ねじ83cに対応するカプラ51と被結合部材71の端部には、結合用雌ねじ83cに螺合する結合用雄ねじ51a,71aがそれぞれ形成されている。   In this deformed steel bar connection structure, a screwing structure is formed between the nut 83 of the lock member 81, the coupler 51, and the member 71 to be coupled. Specifically, a coupling female screw 83c having a diameter larger than that of the female screw 83b holding the locking screw member 82 is formed at one end of the nut 83, and the coupler 51 and the coupled member 71 corresponding to the coupling female screw 83c are formed. Are formed with coupling male screws 51a and 71a that are screwed into the coupling female screw 83c.

このような構成の異形棒鋼接続構造でも、図10に示した異形棒鋼接続構造と同様の作用と効果を有する。   The deformed steel bar connection structure having such a configuration has the same operations and effects as the deformed steel bar connection structure shown in FIG.

図13に示した異形棒鋼接続具11は、部品点数を低減した例である。   The deformed steel bar connector 11 shown in FIG. 13 is an example in which the number of parts is reduced.

この異形棒鋼接続具11は、カプラ51のねじ部54を前述と同様に雌ねじとするとともに、ねじ部54に螺合する被結合部材91を備えている。被結合部材91は、異形棒鋼12(相手方棒鋼12a)の節16間に節16との間に隙間をあけて入り込む山部92を内周面に有するとともに、ねじ部54に螺合する雄ねじ部93を外周面に有するものである。   This deformed steel bar connector 11 includes a threaded portion 54 of the coupler 51 as a female screw in the same manner as described above, and a member 91 to be coupled to the threaded portion 54. The to-be-coupled member 91 has a crest portion 92 that enters a gap between the joints 16 of the deformed steel bar 12 (the counterpart steel bar 12a) on the inner peripheral surface, and a male screw part that is screwed into the screw part 54 93 is provided on the outer peripheral surface.

具体的には、被結合部材91は、前述の係止ねじ部材82と同様に、半円弧状をなす本体部94を有し、本体部94の内周面に前述の係止部材31と同一構造の山部92と谷部95をそれらとは若干異なった態様で備えている。つまり、被結合部材91の山部92と谷部95は前述の係止部材31の山部33と谷部36と形状は同一であるが、被結合部材91においては、谷部95を3個備えている。このため、一端に位置する山部92の端に、本体部94の端から延長した延出部96を有する。相手方棒鋼12aの節16が縦リブ15間の一方と他方で段違いであるので、一対の被結合部材91における延出部96の方向を違えることで、一対の被結合部材91の配設位置が軸方向で揃うことになる。   Specifically, the coupled member 91 has a semicircular arc-shaped main body portion 94 similar to the above-described locking screw member 82, and the same as the above-described locking member 31 on the inner peripheral surface of the main body portion 94. The structure has a peak 92 and a valley 95 in a slightly different manner. In other words, the crest 92 and the trough 95 of the coupled member 91 have the same shape as the crest 33 and the trough 36 of the locking member 31 described above, but in the coupled member 91, the three troughs 95 are provided. I have. For this reason, it has the extension part 96 extended from the end of the main-body part 94 in the end of the peak part 92 located in one end. Since the node 16 of the counterpart steel bar 12a is different in one and the other between the longitudinal ribs 15, the disposition positions of the pair of members 91 are changed by changing the direction of the extending portion 96 in the pair of members 91. It will be aligned in the axial direction.

このような異形棒鋼接続具11を備えた異形棒鋼接続構造では、異形棒鋼12にカプラ51を挿嵌したのち、一対の係止部材31を異形棒鋼12の先端部13に組み合わせてからカプラ51を移動させて係止部材31を覆う。つづいて、相手方棒鋼12aの先端部13に一対の被結合部材91を組み合わせてから、これらの被結合部材91を相手方棒鋼12aとカプラ51との間で相対回転して、カプラ51のねじ部54に螺合する。   In the deformed steel bar connecting structure including such a deformed steel bar connector 11, the coupler 51 is inserted into the deformed steel bar 12, and then the pair of locking members 31 are combined with the distal end portion 13 of the deformed steel bar 12. The locking member 31 is covered by moving. Subsequently, after a pair of coupled members 91 are combined with the distal end portion 13 of the counterpart steel bar 12a, the coupled members 91 are relatively rotated between the counterpart steel bar 12a and the coupler 51, so that the threaded portion 54 of the coupler 51 is obtained. Threaded onto.

すると、カプラ51の円錐状面53が係止部材31を押圧して異形棒鋼12を締め付けて位置決めを行うとともに、被結合部材91の回転によって相手方棒鋼12aが異形棒鋼12側に移動して、相手方棒鋼12aの先端面13aを異形棒鋼12の先端面13aに突き当てて、締め込むことによって加圧状態にする。   Then, the conical surface 53 of the coupler 51 presses the locking member 31 to clamp the deformed steel bar 12 for positioning, and the mating steel bar 12a moves to the deformed steel bar 12 side by the rotation of the coupled member 91, so The tip end surface 13a of the steel bar 12a is abutted against the tip end surface 13a of the deformed bar steel 12, and is brought into a pressurized state by tightening.

このため、前述と同様の作用と効果を有するほか、特に、相手方棒鋼12aを保持する被結合部材91に直接カプラ51が結合するので、部品点数低減と、小型化および軽量化をはかることができる。   For this reason, in addition to having the same operations and effects as described above, in particular, the coupler 51 is directly coupled to the coupled member 91 that holds the counterpart steel bar 12a, so that the number of parts can be reduced, and the size and weight can be reduced. .

図14は、図13に示した異形棒鋼接続具11の変形例である。   FIG. 14 is a modification of the deformed steel bar connector 11 shown in FIG.

この例では、被結合部材91の山部92の数を1個にして、さらなる小型化、軽量化をはかっている。   In this example, the number of peak portions 92 of the member 91 to be coupled is one to further reduce the size and weight.

図15は、図14に示した異形棒鋼接続具11の変形例である。   FIG. 15 is a modified example of the deformed steel bar connector 11 shown in FIG.

この例では、カプラ51に形成されるねじ部54がテーパねじで形成されている。これに伴って被結合部材91の雄ねじ部93も先端側ほど小径となる傾斜を有している。   In this example, the thread portion 54 formed on the coupler 51 is formed by a taper screw. Along with this, the male threaded portion 93 of the member 91 to be coupled also has an inclination that becomes smaller in diameter toward the distal end side.

この異形棒鋼接続具11を用いると、前述と同様の作用と効果を有するほか、ねじ部54がテーパねじであるので、特に被結合部材91には、相手方棒鋼12aを強力に締め付ける作用が生じる。   When this deformed steel bar connector 11 is used, the same action and effect as described above are obtained, and the threaded portion 54 is a taper screw, so that the member 91 to be joined particularly has an action of strongly tightening the counterpart steel bar 12a.

つぎに、異形棒鋼12に他の部材を接続する例を説明する。   Next, an example in which another member is connected to the deformed steel bar 12 will be described.

図16〜図20に示した異形棒鋼接続具11は、カプラ51が結合する被結合部材71を備え、被結合部材71に、カプラ51のねじ部54が螺合する被螺合部73が形成されるとともに、被螺合部73の内周側に、異形棒鋼12の先端面13aを突き当てる対向部75が形成される構成である。   The deformed steel bar connector 11 shown in FIGS. 16 to 20 includes a coupled member 71 to which the coupler 51 is coupled, and a coupled portion 73 into which the threaded portion 54 of the coupler 51 is threaded is formed on the coupled member 71. In addition, on the inner peripheral side of the threaded portion 73, a facing portion 75 that abuts the distal end surface 13a of the deformed steel bar 12 is formed.

図16の異形棒鋼接続具11は、異形棒鋼12の先端部13に定着板を接続する例を示している。   The deformed steel bar connector 11 of FIG. 16 shows an example in which a fixing plate is connected to the tip 13 of the deformed steel bar 12.

この例の被結合部材71は、定着板として機能する円板状の本体部71bと、本体部71bの一面に形成され円筒状をなす円筒部71cを有している。本体部71bの円筒部71cを形成する面における円筒部71cの内周側部分が前述の対向部75である。   The coupled member 71 of this example has a disk-shaped main body 71b that functions as a fixing plate, and a cylindrical portion 71c that is formed on one surface of the main body 71b and forms a cylindrical shape. The inner peripheral side portion of the cylindrical portion 71c on the surface forming the cylindrical portion 71c of the main body portion 71b is the aforementioned facing portion 75.

円筒部71cは異形棒鋼12よりも大径で必要な強度を有する肉厚に形成され、外周面に前述の被螺合部73としての雄ねじが形成されている。被螺合部73はカプラ51の雌ねじからなるねじ部54に螺合する。   The cylindrical portion 71c has a diameter larger than that of the deformed steel bar 12 and has a required strength, and the external thread as the above-described threaded portion 73 is formed on the outer peripheral surface. The threaded portion 73 is threadedly engaged with a threaded portion 54 that is an internal thread of the coupler 51.

円筒部71cの長さは、カプラ51を螺合したときに、係止部材31を異形棒鋼12の表面に沿って先端方向へ移動して対向部75に突き当てるとともに、この係止部材31の移動によっての異形棒鋼12に対して先端方向へ荷重をかけられ、十分な掛かり代を得られる長さである。具体的には、係止部材31が節16間に入り込む山部33を有しており、カプラ51と円筒部71cは相互に螺合するので、カプラ51のねじ部54の長さは少なくとも節16間の間隔w2(図3参照)の2倍〜4倍程度の長さとする。   The length of the cylindrical portion 71c is such that when the coupler 51 is screwed together, the locking member 31 moves in the distal direction along the surface of the deformed steel bar 12 and abuts against the opposing portion 75. The length is such that a load can be applied to the deformed steel bar 12 by the movement in the tip direction and a sufficient allowance can be obtained. Specifically, the locking member 31 has a crest 33 that enters between the nodes 16, and the coupler 51 and the cylindrical portion 71 c are screwed together, so that the length of the screw portion 54 of the coupler 51 is at least a node. The length is about 2 to 4 times the interval w2 between 16 (see FIG. 3).

このような構成の異形棒鋼接続具11では、異形棒鋼12にカプラ51を挿嵌したのち、異形棒鋼12の先端部13における適宜位置に一対の係止部材31を組み合わせてからこれらの係止部材31をカプラ51で覆い、カプラ51のねじ部54を被結合部材71の円筒部71cの被螺合部73に螺合する。そして異形棒鋼12の先端面13aを本体部71bの対向部75に突き当てる。   In the deformed steel bar connector 11 having such a configuration, after the coupler 51 is inserted into the deformed steel bar 12, a pair of locking members 31 are combined at appropriate positions in the distal end portion 13 of the deformed steel bar 12, and then these locking members are combined. 31 is covered with the coupler 51, and the threaded portion 54 of the coupler 51 is screwed into the threaded portion 73 of the cylindrical portion 71c of the coupled member 71. And the front end surface 13a of the deformed steel bar 12 is abutted against the facing portion 75 of the main body portion 71b.

カプラ51と被結合部材71との螺合をしっかりと行って十分に締め込むことによって、係止部材31は異形棒鋼12又は相手方棒鋼12aの表面に食いつき、2組の係止部材31に挟まれる異形棒鋼12の先端部13は対向部75に向けて圧縮される。   When the coupler 51 and the coupled member 71 are firmly screwed together and sufficiently tightened, the locking member 31 bites the surface of the deformed steel bar 12 or the counterpart steel bar 12a and is sandwiched between the two sets of locking members 31. The distal end portion 13 of the deformed steel bar 12 is compressed toward the facing portion 75.

係止部材31の山部33は、異形棒鋼12の節16間に節16との間に隙間32をあけて入り込む構造であるので、異形棒鋼12のメーカー間や製品間の寸法のばらつきにもかかわりなく係止させられる。しかも、その係止は、異形棒鋼12に対しては軸方向に移動したうえで、引っ掛かりが得られる位置において山部33の角部33b,33cを中心とした部分を異形棒鋼12の表面に局所的に強く押し当てて行い、異形棒鋼12の先端面13aを対向部75に当てて加圧力を生じさせる。このため、強力な係止が可能であり、異形棒鋼12における係止部材31が覆う部分の全体において係止部材31の安定した係止状態が得られる。   Since the peak portion 33 of the locking member 31 has a structure in which a gap 32 is provided between the joint 16 of the deformed steel bar 12 and the joint 16, the dimensional variation between manufacturers of the deformed steel bar 12 and between products is also affected. It can be locked regardless. In addition, the locking is performed in the axial direction with respect to the deformed steel bar 12, and at the position where the catch is obtained, the portion centering on the corners 33b and 33c of the peak 33 is locally located on the surface of the deformed steel bar 12. The tip end surface 13a of the deformed steel bar 12 is applied to the facing portion 75 to generate a pressing force. For this reason, a strong latching is possible and the stable latching state of the latching member 31 is obtained in the whole part which the latching member 31 in the deformed steel bar 12 covers.

この結果、図16に示したような異形棒鋼接続具11を用いた異形棒鋼接続構造では、接続された異形棒鋼12の軸方向に圧縮の荷重が作用しても縮むことなく、伸長方向に引張の荷重が作用しても伸びることのない堅固な接続状態、換言すればすべりのない良好な接続状態が得られる。   As a result, in the deformed bar connecting structure using the deformed bar connecting tool 11 as shown in FIG. 16, even if a compression load is applied in the axial direction of the connected deformed steel bar 12, it is not contracted and is pulled in the extending direction. Thus, a firm connection state that does not stretch even when a load is applied, in other words, a good connection state without slipping is obtained.

また、接続状態においてカプラ51のねじ部54と被結合部材71の被螺合部73を有する部分が荷重を支えることになるが、前述のようにねじ部54と被螺合部73を有する部分の厚みを確保できる構造であるので、所望の強度を得られるとともに、接続構造の大径化を回避できる。   Further, in the connected state, the portion having the threaded portion 54 of the coupler 51 and the threaded portion 73 of the coupled member 71 supports the load, but the portion having the threaded portion 54 and the threaded portion 73 as described above. Therefore, a desired strength can be obtained and an increase in the diameter of the connection structure can be avoided.

図17の異形棒鋼接続具11は、異形棒鋼12の先端部13に丸鋼などの異形棒鋼12以外の棒状部材17を接続した例を示している。   The deformed steel bar connector 11 of FIG. 17 shows an example in which a bar-shaped member 17 other than the deformed steel bar 12 such as a round steel bar is connected to the distal end portion 13 of the deformed steel bar 12.

この例の被結合部材71は、短円柱状の本体部71bと、本体部71bの一面に形成され円筒状をなす円筒部71cと、本体部71bの他面に形成され棒状部材17を接続するねじ穴71dを有している。円筒部71cと対向部75については、図16に示した異形棒鋼接続具11と同様であるので詳しい説明を省略する。   The coupled member 71 of this example connects the short columnar body portion 71b, the cylindrical portion 71c formed on one surface of the body portion 71b, and the rod-like member 17 formed on the other surface of the body portion 71b. A threaded hole 71d is provided. Since the cylindrical part 71c and the opposing part 75 are the same as those of the deformed steel bar connector 11 shown in FIG.

ねじ穴71dは、接続する棒状部材17の太さに合わせて形成されている。棒状部材17は先端部に、ねじ穴71dに螺合する雌ねじ17aを有している。   The screw hole 71d is formed according to the thickness of the rod-shaped member 17 to be connected. The rod-shaped member 17 has a female screw 17a that is screwed into the screw hole 71d at the tip.

このような構成の異形棒鋼接続具11では、まず、前述と同様に係止部材31とカプラ51を用いて異形棒鋼12の先端面13aを対向部75に突き当てた状態で被結合部材71との結合を行い、この後に、被結合部材71の本体部71bのねじ穴71dに対して棒状部材17の先端部を螺合する。被結合部材71に対する異形棒鋼12の接続と棒状部材17の接続は、前述とは逆に、棒状部材17の接続を先に行うこともできる。以下、同様である。   In the deformed steel bar connector 11 having such a configuration, first, in the state where the front end surface 13a of the deformed steel bar 12 is abutted against the facing portion 75 using the locking member 31 and the coupler 51 as described above, After that, the distal end portion of the rod-shaped member 17 is screwed into the screw hole 71d of the main body portion 71b of the member to be coupled 71. Contrary to the above, the connection of the deformed steel bar 12 and the connection of the rod-shaped member 17 to the coupled member 71 can be performed first. The same applies hereinafter.

図18の異形棒鋼接続具11は、図17の異形棒鋼接続具11の変形例である。   The deformed steel bar connector 11 of FIG. 18 is a modification of the deformed steel bar connector 11 of FIG.

この例の被結合部材71は、本体部71bの外周面に、円筒部71cの外周面の被螺合部73と同じ雄ねじが一連に形成されている。   In the coupled member 71 of this example, the same external thread as the threaded portion 73 on the outer peripheral surface of the cylindrical portion 71c is formed in series on the outer peripheral surface of the main body portion 71b.

このような構成においては、本体部71bの外周面に、棒状部材17としてパイプ材(図示せず)を接続することも、ロックナット(図示せず)を螺合することもできる。   In such a configuration, a pipe member (not shown) can be connected to the outer peripheral surface of the main body 71b as the rod-like member 17, or a lock nut (not shown) can be screwed together.

図19の異形棒鋼接続具11は、図17、図18の変形例である。   The deformed steel bar connector 11 of FIG. 19 is a modification of FIGS. 17 and 18.

この例の被結合部材71は、接続する棒状部材17をねじで直接螺合固定する構造ではなく、ボルト18とナット19を用いて固定する構造である。つまり、被結合部材71は、本体部71bに棒状部材17を挿入可能な接続穴71eを有し、接続穴71eには接続穴71eと直交する方向に貫通する貫通穴71fが形成されている。貫通穴71fにボルト18が挿入されて、棒状部材17を串刺しにしてこの状態をボルト18に螺合するナット19で保持する。ボルト18とナット19に代えて、例えばリベットなどの他の部材を用いることもできる。   The coupled member 71 in this example is not a structure in which the rod-shaped member 17 to be connected is directly screwed and fixed with a screw, but a structure in which the bolt 18 and the nut 19 are used for fixing. That is, the coupled member 71 has a connection hole 71e into which the rod-shaped member 17 can be inserted into the main body 71b, and the connection hole 71e is formed with a through hole 71f penetrating in a direction orthogonal to the connection hole 71e. Bolts 18 are inserted into the through holes 71 f, and the rod-like member 17 is skewed and this state is held by a nut 19 that is screwed into the bolt 18. Instead of the bolt 18 and the nut 19, other members such as rivets may be used.

図20の異形棒鋼接続具11は、図19の変形例である。   The deformed steel bar connector 11 of FIG. 20 is a modification of FIG.

この例の被結合部材71は、異形棒鋼12に対して棒状部材17をL字形やT字形に接続するものである。つまり、被結合部材71の本体部71bは、異形棒鋼12の接続方向に延びるボルト穴71gを、円筒部71cを有する面とは反対側の端から有するとともに、このボルト穴71gに直交する接続穴71eが形成されている。接続穴71eは、接続する棒状部材17を挿入する部分であり、挿入する棒状部材17に合わせて大きさや断面形状が設定されている。図示例では、T字形に接続する例を示したため、接続穴71eは貫通させたが、貫通させなければL字形に接続するものとなる。   The coupled member 71 of this example connects the rod-shaped member 17 to the deformed steel bar 12 in an L shape or a T shape. That is, the main body portion 71b of the coupled member 71 has a bolt hole 71g extending in the connecting direction of the deformed steel bar 12 from an end opposite to the surface having the cylindrical portion 71c, and a connection hole orthogonal to the bolt hole 71g. 71e is formed. The connection hole 71e is a portion for inserting the rod-shaped member 17 to be connected, and the size and the cross-sectional shape are set according to the rod-shaped member 17 to be inserted. In the illustrated example, since an example of connecting in a T shape is shown, the connection hole 71e is penetrated, but if not penetrated, it is connected in an L shape.

図21の異形棒鋼接続具11は、異形棒鋼12の先端部13に相手方棒鋼12aを接続して三方継ぎや四方継ぎなどとする例である。   21 is an example in which a mating steel bar 12a is connected to the tip 13 of the deformed steel bar 12 to form a three-way joint, a four-way joint, or the like.

この異形棒鋼接続具11は、カプラ51及び係止部材31と、カプラ51が結合する被結合部材71を備えている。カプラ51と係止部材31は前述と同じ構成であるが、接続する異形棒鋼12及び相手方棒鋼12aの本数と同数組みのカプラ51と係止部材31を備える。   The deformed steel bar connector 11 includes a coupler 51, a locking member 31, and a coupled member 71 to which the coupler 51 is coupled. The coupler 51 and the locking member 31 have the same configuration as described above, but include the same number of sets of couplers 51 and locking members 31 as the number of the deformed steel bar 12 and the counterpart steel bar 12a to be connected.

被結合部材71は、カプラ51のねじ部54が螺合する複数の被螺合部73を、接続方向に対応させて備えるとともに、異形棒鋼12を保持するカプラ51が接続される被螺合部73の内周側に、異形棒鋼12の先端面13aを突き当てる対向部75を有している。対向部75はが平面で構成される。   The coupled member 71 includes a plurality of threaded portions 73 to which the threaded portion 54 of the coupler 51 is threaded, corresponding to the connection direction, and the threaded portion to which the coupler 51 that holds the deformed steel bar 12 is connected. On the inner peripheral side of 73, an opposing portion 75 that abuts the tip end surface 13 a of the deformed steel bar 12 is provided. The facing portion 75 is configured by a plane.

具体的には、被結合部材71の本体部71bは相手方棒鋼12aを挿通可能な大きさの略円筒状に形成され、長手方向の中間位置の側面に、外周面に前述の異形棒鋼12保持するカプラ51が接続される被螺合部73を有した円筒部71cが形成されている。   Specifically, the main body 71b of the member 71 to be coupled is formed in a substantially cylindrical shape having a size capable of inserting the counterpart steel bar 12a, and holds the above-described deformed steel bar 12 on the outer peripheral surface on the side surface in the longitudinal direction. A cylindrical portion 71c having a threaded portion 73 to which the coupler 51 is connected is formed.

本体部71bの長手方向の両端部は、相手方棒鋼12aを保持するカプラ51が接続される被螺合部73として雄ねじを有している。   Both ends in the longitudinal direction of the main body portion 71b have male threads as the threaded portions 73 to which the coupler 51 that holds the counterpart steel bar 12a is connected.

図21の実線は三方継ぎの例を示しており、仮想線で示したように本体部71bの周面に円筒部71cを所定の方向に向けて付加すると、四方継ぎなどとすることができる。   The solid line in FIG. 21 shows an example of a three-way joint. When the cylindrical part 71c is added to the peripheral surface of the main body 71b in a predetermined direction as shown by the phantom line, a four-way joint or the like can be obtained.

カプラ51と係止部材31の構成は前述の構成と同一であるので詳しい説明を省略する。   Since the configurations of the coupler 51 and the locking member 31 are the same as those described above, a detailed description thereof will be omitted.

このような構成の異形棒鋼接続具11では、まず、前述と同様に係止部材31とカプラ51を用いて異形棒鋼12の先端面13aを対向部75に突き当てた状態で被結合部材71との結合を行い、この後に、被結合部材71の本体部71bの両端の被螺合部73に対して係止部材31とカプラ51を用いて相手方棒鋼12aの接続を行う。このとき、相手方棒鋼12aの先端面13a同士を突き当てて、圧縮力がかかった状態にする。   In the deformed steel bar connector 11 having such a configuration, first, in the state where the front end surface 13a of the deformed steel bar 12 is abutted against the facing portion 75 using the locking member 31 and the coupler 51 as described above, Thereafter, the mating steel bar 12a is connected to the threaded portions 73 at both ends of the main body portion 71b of the coupled member 71 using the locking member 31 and the coupler 51. At this time, the end surfaces 13a of the counterpart steel bars 12a are brought into contact with each other so that a compressive force is applied.

以上の構成は、この発明を実施するための一形態であり、この発明は前述の構成のみに限定されるものではなく、その他の構成を採用することができる。   The above configuration is one form for carrying out the present invention, and the present invention is not limited to the above configuration, and other configurations can be adopted.

たとえば、図16〜図20に示したような異形棒鋼12同士の接続でない場合でもカプラ51の内部空間にグラウト材76を充填させることができる。   For example, the grout material 76 can be filled in the internal space of the coupler 51 even when the deformed steel bars 12 are not connected to each other as shown in FIGS.

また、異形棒鋼12の先端面13aと対向部75との間に、圧縮力に耐え得る硬質の部材を介在させてもよい。   Further, a hard member that can withstand the compressive force may be interposed between the front end surface 13 a of the deformed steel bar 12 and the facing portion 75.

係止部材31や、係止ねじ部材82、係止部材31に似た形状の被結合部材91同様の形状をなす被結合部材91は、前述のように2個で一組ではなく、3個や4個で一組としてもよい。   As described above, the locking member 31, the locking screw member 82, and the to-be-coupled member 91 having a shape similar to that of the locking member 31 are not two, but one set. Or a set of four.

11…異形棒鋼接続具
12…異形棒鋼
13…先端部
13a…先端面
16…節
31…係止部材
32…隙間
33…山部
33a…頂面
33b,33c…角部
34…傾斜面
51…カプラ
53…円錐状面
54…ねじ部
71…被結合部材
73…被螺合部
75…対向部
76…グラウト材
91…被結合部材
92…山部
93…雄ねじ部
DESCRIPTION OF SYMBOLS 11 ... Deformed bar steel connector 12 ... Deformed bar steel 13 ... End part 13a ... End surface 16 ... Node 31 ... Stopping member 32 ... Gap 33 ... Mountain part 33a ... Top surface 33b, 33c ... Corner part 34 ... Inclined surface 51 ... Coupler 53 ... Conical surface 54 ... Screw part 71 ... Member to be coupled 73 ... Screwed part 75 ... Opposed part 76 ... Grout material 91 ... Member to be joined 92 ... Mountain part 93 ... Male thread part

Claims (7)

異形棒鋼の先端部を接続するための異形棒鋼接続構造であって、
前記異形棒鋼の外周面における先端より後端側の部位に配置される複数で一組の係止部材と、
前記異形棒鋼に挿嵌されて前記係止部材を取り囲む筒状のカプラを備え、
前記係止部材が、内周面に形成されて前記異形棒鋼の節間に前記節との間に隙間をあけて入り込む前記節の高さよりも高い山部と、外周面に形成されて前記カプラに押さえられる先端側ほど大径の傾斜面を有し、
前記山部の頂面が、前記異形棒鋼の長手方向に対応する軸方向に平らであるとともに、前記頂面の前記軸方向の両側に角部を有し、
前記カプラが、前記異形棒鋼の先端側に向けての相対移動で前記係止部材の前記傾斜面を前記異形棒鋼側に押圧する先端側ほど大径の円錐状面と、接続相手に対する結合用のねじ部を、軸方向の後端側から先端側に順に有し、
前記異形棒鋼の先端を前記係止部材よりも突出させた状態で前記カプラが結合する被結合部材の内周側の対向部に対して直接又は間接に前記異形棒鋼の先端面を突き当てる
異形棒鋼接続構造
A deformed steel bar connection structure for connecting the tips of the deformed steel bars,
And a pair of engaging members in a plurality arranged in a portion of the rear side of the tip definitive on the outer peripheral surface of the deformed steel bars,
A cylindrical coupler that is inserted into the deformed steel bar and surrounds the locking member,
The locking member is formed on an inner peripheral surface and is formed on the outer peripheral surface with a peak portion that is higher than the height of the node that is inserted between the deformed steel bars with a gap between the nodes. The tip side pressed by
The top surface of the peak is flat in the axial direction corresponding to the longitudinal direction of the deformed steel bar, and has corners on both sides of the axial direction of the top surface,
The coupler has a conical surface with a larger diameter on the distal end side that presses the inclined surface of the locking member toward the deformed steel bar by relative movement toward the distal end side of the deformed steel bar, and for coupling to a connection partner. a threaded portion, possess in order to from the rear end in the axial direction,
The front end surface of the deformed steel bar is directly or indirectly abutted against the inner peripheral side of the coupled member to which the coupler is coupled in a state where the front end of the deformed steel bar protrudes from the locking member. /> Shaped steel bar connection structure .
前記被結合部材が、接続相手としての異形棒鋼を保持するものであり、The member to be coupled is for holding a deformed steel bar as a connection partner,
前記対向部が、前記被結合部材に保持された前記異形棒鋼の先端面であるThe facing portion is a tip surface of the deformed steel bar held by the coupled member
請求項1に記載の異形棒鋼接続構造。The deformed steel bar connection structure according to claim 1.
前記被結合部材には、前記カプラの前記ねじ部が螺合する被螺合部が形成されるとともに、The coupled member is formed with a threaded portion into which the threaded portion of the coupler is threaded,
前記ねじ部及び前記被螺合部の内周に、互いに接続し合う前記異形棒鋼の先端面が位置するThe front end surfaces of the deformed steel bars connected to each other are located on the inner periphery of the threaded portion and the threaded portion.
請求項2に記載の異形棒鋼接続構造。The deformed steel bar connection structure according to claim 2.
前記カプラの外径が、前記異形棒鋼の長手方向に対応する軸方向の全体にわたって同一である
請求項1から請求項3のうちいずれか一項に記載の異形棒鋼接続構造
The deformed steel bar connecting structure according to any one of claims 1 to 3, wherein an outer diameter of the coupler is the same in an entire axial direction corresponding to a longitudinal direction of the deformed steel bar.
前記カプラの前記ねじ部が雌ねじであるとともに、
前記被結合部材の外径が、前記カプラの外径と同一である
請求項1から請求項4のうちいずれか一項に記載の異形棒鋼接続構造。
The thread portion of the coupler is a female thread;
The deformed steel bar connection structure according to any one of claims 1 to 4 , wherein an outer diameter of the coupled member is the same as an outer diameter of the coupler .
前記カプラの前記ねじ部が雌ねじであるとともに、
前記ねじ部に螺合する複数で一組の前記被結合部材を備え、
前記被結合部材が、前記異形棒鋼の節間に前記節との間に隙間をあけて入り込む山部を内周面に有するとともに、前記ねじ部に螺合する雄ねじ部を外周面に有するものである
請求項1から請求項4のうちいずれか一項に記載の異形棒鋼接続構造
The thread portion of the coupler is a female thread;
A plurality of sets of the members to be coupled that are screwed into the threaded portion;
The to-be-coupled member has, on the inner peripheral surface, a crest that enters between the nodes of the deformed steel bar with a gap between the joints, and has an external thread on the outer peripheral surface that is screwed into the threaded portion. The deformed steel bar connection structure according to any one of claims 1 to 4.
前記カプラの内部空間又は前記カプラの軸方向の外側部にグラウト材を備えた
請求項1から請求項6のうちいずれか一項に記載の異形棒鋼接続構造。
The deformed steel bar connection structure according to any one of claims 1 to 6, wherein a grout material is provided in an inner space of the coupler or an outer portion in an axial direction of the coupler.
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JPS5299615U (en) * 1976-01-26 1977-07-28
JPS56162721U (en) * 1980-05-02 1981-12-03
JPH0913581A (en) * 1995-07-03 1997-01-14 Tokyo Tekko Co Ltd Joint for screw-knotted reinforcement
JPH09279766A (en) * 1996-04-12 1997-10-28 Tootec:Kk Joint structure of deformed reinforcement
JP4024170B2 (en) * 2003-03-18 2007-12-19 日本スプライススリーブ株式会社 Fittings for threaded reinforcing bars
JP2015135011A (en) * 2014-01-17 2015-07-27 大谷製鉄株式会社 Mechanical joint

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5299615U (en) * 1976-01-26 1977-07-28
JPS56162721U (en) * 1980-05-02 1981-12-03
JPH0913581A (en) * 1995-07-03 1997-01-14 Tokyo Tekko Co Ltd Joint for screw-knotted reinforcement
JPH09279766A (en) * 1996-04-12 1997-10-28 Tootec:Kk Joint structure of deformed reinforcement
JP4024170B2 (en) * 2003-03-18 2007-12-19 日本スプライススリーブ株式会社 Fittings for threaded reinforcing bars
JP2015135011A (en) * 2014-01-17 2015-07-27 大谷製鉄株式会社 Mechanical joint

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