JP2005171584A - Intersection part fixing jig and intersection fixed structure - Google Patents

Intersection part fixing jig and intersection fixed structure Download PDF

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JP2005171584A
JP2005171584A JP2003411525A JP2003411525A JP2005171584A JP 2005171584 A JP2005171584 A JP 2005171584A JP 2003411525 A JP2003411525 A JP 2003411525A JP 2003411525 A JP2003411525 A JP 2003411525A JP 2005171584 A JP2005171584 A JP 2005171584A
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fitting groove
intersection
reinforcing
jig
fixing jig
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JP4307971B2 (en
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Takayoshi Shiina
貴快 椎名
Masahiko Yokokita
昌彦 横北
Naoyuki Kondo
尚之 近藤
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Nishimatsu Construction Co Ltd
Ube Exsymo Co Ltd
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Nishimatsu Construction Co Ltd
Ube Nitto Kasei Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an intersection fixing jig and an intersection fixed structure, capable of easily and surely fixing an intersecting section crossing both reinforced materials with rectangular sections. <P>SOLUTION: The intersection fixed jig equipped with a jig body 2, a first fitting groove 3 formed in the surface side of the jig body 2 and a second fitting groove 4 formed in the back side of the jig body 2 is so constituted that the first fitting groove 3 intersects with the second fitting groove 4. An intersection site of one reinforcing material 10 is fitted to the first fitting groove 3, and an intersection site of the other reinforcing material 11 is fitted to the second fitting groove 4 to enable both reinforcing materials 10 and 11 to easily and surely fix at the intersecting section by positioning both of them, while holding their predetermined attitudes. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、構造物を補強する補強材どうしを交差させた交差部を固定する交差部固定治具および交差部固定構造に関する。   The present invention relates to a crossing portion fixing jig and a crossing portion fixing structure for fixing a crossing portion in which reinforcing members that reinforce a structure cross each other.

鉄筋コンクリート製の構造物は、型枠中に鉄筋を配筋したうえで、型枠中にコンクリートを打設することによって構築されている。コンクリート打設の際の衝撃や生コンクリートの圧力等によって、配筋が乱れたり、所定の位置から移動すると、設計どおりの耐力や剛性が得られないため、鉄筋どうしはその交差部に番線等の結束線を巻き付けることによよって交差部を固定し、鉄筋どうしを位置ずれや乱れが生じないように、その交差部で固定している。例えば、特許文献１には、鉄筋どうしの交差部における結束線の巻き付け方法が記載されている。   A structure made of reinforced concrete is constructed by placing reinforcing bars in a formwork and placing concrete in the formwork. If the bar arrangement is disturbed by the impact of concrete placement or the pressure of ready-mixed concrete, or if it moves from a predetermined position, the strength and rigidity as designed cannot be obtained. The crossing portion is fixed by winding the binding wire, and the reinforcing bars are fixed at the crossing portion so as not to be displaced or disturbed. For example, Patent Document 1 describes a method for winding a binding wire at an intersection of reinforcing bars.

ところで、近年、高強度で軽量であるＦＲＰ製の補強筋（材）が、鉄筋の代わりに種々のコンクリート構造物に内蔵されている。例えば、トンネルを構築する際に採用されているＮＯＭＳＴ（Novel Material Shield-cuttable Tunnel-wall）工法においては、シールドの発進位置と到達位置に立坑を築造し、この立坑を直接シールドで開削するが、この立坑の鏡切り部には、ケーソンにはＦＲＰ製の主筋、帯筋、せん断筋等の補強筋が内蔵されている。
このようなFRP製の補強筋（材）は、丸棒状の鉄筋と異なり、断面（横断面）が矩形状に形成された帯板状に形成する場合がある。
特開２００３−１３５４８号公報 By the way, in recent years, reinforcing bars (materials) made of FRP which are high in strength and light weight are incorporated in various concrete structures instead of reinforcing bars. For example, in the NOMST (Novel Material Shield-cuttable Tunnel-wall) method adopted when constructing a tunnel, a shaft is built at the starting position and the reaching position of the shield, and this shaft is cut directly with a shield. In the mirror cutting section of this shaft, the caisson incorporates reinforcing bars such as FRP main bars, band bars and shear bars.
Such a reinforcing bar (material) made of FRP may be formed in a strip shape in which the cross section (transverse section) is formed in a rectangular shape, unlike a round bar-shaped reinforcing bar.
JP 2003-13548 A

上記のような断面矩形状の補強材どうしを交差させた交差部に、従来の番線等の結束線を巻き付けることによって、補強材どうしをその交差部で固定するのは、手間がかかるとともに困難であった。
すなわち、補強材は断面矩形状の帯板状のものであるので、厚さと幅が異なっている。したがって、例えば、厚さが幅より小さい補強材どうしを交差させる場合に、一方の補強材の厚さ方向の細い面に他方の補強材を当接して交差させ、この交差部に結束線を巻き付ける際に、補強材が当接面を支点として倒れ易く、よって、補強材を所定の姿勢を保持しつつ位置決めして交差部で固定するのに手間がかかるとともに、困難であった。 It is difficult and time-consuming to fix the reinforcing members at the intersections by wrapping a binding wire such as a conventional number wire around the intersections where the reinforcing members having a rectangular cross section as described above are crossed. there were.
That is, since the reinforcing material is in the shape of a strip having a rectangular cross section, the thickness and width are different. Therefore, for example, when reinforcing members having a thickness smaller than the width are crossed, the other reinforcing material is brought into contact with the thin surface in the thickness direction of one reinforcing member to cross each other, and a binding wire is wound around the crossing portion. At this time, it is easy for the reinforcing material to fall with the contact surface as a fulcrum, so that it takes time and effort to position and fix the reinforcing material at the intersection while maintaining a predetermined posture.

本発明は上記事情に鑑みてなされたものであり、断面矩形状の補強材どうしを交差させた交差部を容易かつ確実に固定できる交差部固定治具および交差部固定構造を提供することを課題としている。   The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an intersecting portion fixing jig and an intersecting portion fixing structure capable of easily and reliably fixing an intersecting portion in which reinforcing members having a rectangular cross section intersect each other. It is said.

上記課題を解決するために、請求項１に記載の発明は、例えば図１〜図５に示すように、断面矩形状の補強材（水平筋１０、鉛直筋１１）どうしを交差させた交差部を固定する交差部固定治具１であって、
治具本体２と、この治具本体２の表面側に形成され、前記一方の補強材（水平筋１０）の交差部位が嵌合される第１嵌合溝３と、前記治具本体２の裏面側に形成され、前記他方の補強材（鉛直筋１１）の交差部位が嵌合される第２嵌合溝４とを備え、
前記第１嵌合溝３と第２嵌合溝４とは交差していることを特徴とする。 In order to solve the above-mentioned problem, the invention described in claim 1 is, for example, as shown in FIG. 1 to FIG. 5, a crossing portion in which reinforcing members (horizontal bars 10 and vertical bars 11) having a rectangular cross section cross each other. An intersection fixing jig 1 for fixing
A jig body 2, a first fitting groove 3 formed on the surface side of the jig body 2 and into which an intersecting portion of the one reinforcing member (horizontal bar 10) is fitted, and the jig body 2 A second fitting groove 4 formed on the back side and fitted with an intersecting portion of the other reinforcing material (vertical reinforcement 11);
The first fitting groove 3 and the second fitting groove 4 intersect each other.

前記治具本体は、ＡＢＳ樹脂や塩化ビニール等の樹脂で形成するのが望ましいが、これに限ることはない。本発明の交差部固定治具を、上述したＮＯＭＳＴ工法によって構築される立坑の壁の補強筋（補強材）どうしの交差部に使用する場合は、シールドマシンのカッターで容易に切削できる程度の強度を持つものであればよい。
また、第１嵌合溝と第２嵌合溝との交差角度は、補強材どうしの交差部における交差角度と等しく設定すればよい。
さらに、治具本体を樹脂等のある程度の弾力性を備えた材料で形成する場合、前記第１嵌合溝および第２嵌合溝の溝幅を、補強材の幅より若干狭く設定しておき、補強材を第１および第２嵌合溝に弾性的に押し込むようにして嵌合させるのが望ましい。
また、治具本体の第１嵌合溝や第２嵌合溝につめを付けたり、蓋を付けたりすることで、番線等の結束部材を使用することなく、補強材どうしを固定することができる。 The jig body is preferably formed of a resin such as ABS resin or vinyl chloride, but is not limited thereto. When the intersection fixing jig of the present invention is used at the intersection of reinforcing bars (stiffeners) of the shaft wall constructed by the above-described NOMST method, the strength is such that it can be easily cut with a cutter of a shield machine. Anything that has
Moreover, what is necessary is just to set the crossing angle of a 1st fitting groove and a 2nd fitting groove equal to the crossing angle in the crossing part of reinforcement materials.
Furthermore, when the jig body is formed of a material having a certain degree of elasticity such as resin, the groove widths of the first fitting groove and the second fitting groove are set slightly narrower than the width of the reinforcing material. It is desirable to fit the reinforcing material by elastically pushing it into the first and second fitting grooves.
In addition, the reinforcing members can be fixed without using a binding member such as a number wire by attaching a claw or a lid to the first fitting groove or the second fitting groove of the jig body. it can.

請求項１に記載の発明によれば、一方の補強材と他方の補強材とが交差する交差部に治具本体を配置し、この治具本体の第１嵌合溝に一方の補強材の交差部位を嵌合し、第２嵌合溝に前記他方の補強材の交差部位を嵌合することによって、両補強材を所定の姿勢を保持しつつ位置決めして交差部で容易かつ確実に固定することができる。   According to invention of Claim 1, a jig | tool main body is arrange | positioned in the cross | intersection part where one reinforcing material and the other reinforcing material cross | intersect, and one reinforcing material of this reinforcing material is inserted in the 1st fitting groove of this jig | tool main body. By fitting the intersecting part and fitting the intersecting part of the other reinforcing material in the second fitting groove, both reinforcing members are positioned while maintaining a predetermined posture and fixed easily and reliably at the intersecting part. can do.

請求項２に記載の発明は、請求項１に記載の交差部固定治具１において、
前記第１嵌合溝３と第２嵌合溝４とは直交していることを特徴とする。 The invention according to claim 2 is an intersection fixing jig 1 according to claim 1,
The first fitting groove 3 and the second fitting groove 4 are orthogonal to each other.

補強材を、例えばＮＯＭＳＴ工法によって構築される立坑の壁の補強筋として使用する場合に、一方の補強材は水平筋となり、他方の補強材は鉛直筋となる。
したがって、請求項２に記載の発明によれば、第１嵌合溝と第２嵌合溝とが直交しているので、上記のような水平筋と鉛直筋との交差部において、両補強筋を所定の姿勢を保持しつつ位置決めして容易かつ確実に固定することができる。 When the reinforcing material is used as a reinforcing bar for a wall of a shaft constructed by the NOMST method, for example, one reinforcing material becomes a horizontal reinforcing bar and the other reinforcing material becomes a vertical reinforcing bar.
Therefore, according to the invention described in claim 2, since the first fitting groove and the second fitting groove are orthogonal to each other, both reinforcing bars are provided at the intersection of the horizontal and vertical bars as described above. Can be positioned and fixed easily and reliably while maintaining a predetermined posture.

請求項３に記載の発明は、請求項１または２に記載の交差部固定治具１において、
前記第１嵌合溝３の底面３ａと、第２嵌合溝４の底面４ａとは同一平面上に位置していることを特徴とする。 The invention according to claim 3 is the cross-section fixing jig 1 according to claim 1 or 2,
The bottom surface 3a of the first fitting groove 3 and the bottom surface 4a of the second fitting groove 4 are located on the same plane.

請求項３に記載の発明によれば、第１嵌合溝の底面と第２嵌合溝の底面とが同一平面上に位置しているので、一方の補強材と他方の補強材とを、交差部において互いに当接させることができる。したがって、交差部において補強材間に隙間が生じることがないので、より確実に補強材どうしを位置決めして固定できる。
また、交差部において補強材どうしに隙間が生じていなので、補強材を所定の位置に確実に配筋でき、よって、コンクリートをそのかぶり厚が設計どおりとなるように打設できる。 According to invention of Claim 3, since the bottom face of the 1st fitting groove and the bottom face of the 2nd fitting groove are located on the same plane, one reinforcing material and the other reinforcing material, They can be brought into contact with each other at the intersection. Therefore, there is no gap between the reinforcing members at the intersection, so that the reinforcing members can be positioned and fixed more reliably.
In addition, since there is a gap between the reinforcing members at the intersection, the reinforcing member can be reliably arranged at a predetermined position, and therefore the concrete can be placed so that the cover thickness is as designed.

請求項４に記載の発明は、請求項１〜３のいずれか一項に記載の交差部固定治具１によって、断面矩形状の補強材（水平筋１０、鉛直筋１１）どうしを交差させた交差部を固定してなる交差部固定構造であって、
一方の補強材（水平筋１０）と他方の補強材（鉛直筋１１）とが交差する交差部に前記交差部固定治具１が配置され、
この交差部固定治具１の第１嵌合溝３に前記一方の補強材（水平筋１０）の交差部位が嵌合され、第２嵌合溝４に前記他方の補強材（鉛直筋１１）の交差部位が嵌合されていることを特徴とする。 In the invention according to claim 4, the reinforcing members (horizontal bars 10, vertical bars 11) having a rectangular cross section are crossed by the intersection fixing jig 1 according to any one of claims 1 to 3. An intersection fixing structure in which the intersection is fixed,
The intersecting portion fixing jig 1 is disposed at an intersecting portion where one reinforcing member (horizontal reinforcement 10) and the other reinforcing member (vertical reinforcing member 11) intersect,
The intersecting portion of the one reinforcing member (horizontal reinforcement 10) is fitted into the first fitting groove 3 of the intersection fixing jig 1, and the other reinforcing member (vertical reinforcement 11) is fitted into the second fitting groove 4. It is characterized in that the intersecting portions of are fitted.

請求項４に記載の発明によれば、両補強材を前記第１および第２の嵌合溝によって所定の姿勢を保持しつつ位置決めして交差部で容易かつ確実に固定することができる。   According to the fourth aspect of the present invention, both the reinforcing members can be positioned while maintaining a predetermined posture by the first and second fitting grooves, and can be easily and reliably fixed at the intersection.

請求項５に記載の発明は、請求項４に記載の交差部固定構造において、
前記交差部において、前記補強材（水平筋１０、鉛直筋１１）どうしが結束部材（結束バンド１５）によって結束されていることを特徴とする。 According to a fifth aspect of the present invention, in the intersection fixing structure according to the fourth aspect,
In the intersection, the reinforcing members (horizontal bars 10 and vertical bars 11) are bound together by a binding member (binding band 15).

請求項５に記載の発明よれば、交差部固定治具によって、互いに交差する補強材どうしがその交差部において位置決め固定されており、そのうえで、補強材どうしが結束部材によって結束されているので、補強材どうしが交差部固定治具から外れるのを防止できる。
したがって、コンクリート打設の際の衝撃や生コンクリートの圧力等によって、補強材が乱れたり、所定の位置から移動するのを確実に防止できる。 According to the invention described in claim 5, the reinforcing members that intersect with each other are positioned and fixed at the intersecting portion by the intersecting portion fixing jig, and further, the reinforcing members are bound by the binding member. It is possible to prevent the materials from coming off from the intersection fixing jig.
Therefore, it is possible to reliably prevent the reinforcing material from being disturbed or moved from a predetermined position due to an impact at the time of placing concrete, a pressure of ready-mixed concrete, or the like.

本発明によれば、治具本体に第１嵌合溝と第２嵌合溝とが交差した状態で形成されているので、第１嵌合溝に一方の補強材の交差部位を嵌合し、第２嵌合溝に前記他方の補強材の交差部位を嵌合することによって、両補強材を所定の姿勢を保持しつつ位置決めして交差部で容易かつ確実に固定することができる。そして、補強材どうしを結束部材によって結束することによって、補強材どうしが交差部固定治具から外れるのを防止でき、「よって、コンクリート打設の際の衝撃や生コンクリートの圧力等によって、補強材が乱れたり、所定の位置から移動するのを確実に防止できる。   According to the present invention, since the first fitting groove and the second fitting groove are formed in the jig body so as to intersect with each other, the intersecting portion of one reinforcing material is fitted into the first fitting groove. By fitting the intersecting portion of the other reinforcing material into the second fitting groove, both reinforcing materials can be positioned while maintaining a predetermined posture and can be easily and reliably fixed at the intersecting portion. And, by binding the reinforcing materials with the binding member, it is possible to prevent the reinforcing materials from being detached from the intersection fixing jig. Can be reliably prevented from being disturbed or moved from a predetermined position.

また、第１嵌合溝と第２嵌合溝とが直交して形成することによって、ＮＯＭＳＴ工法等の壁に使用される鉛直筋と水平筋とをその交差部において姿勢を保持しつつ位置決めして容易かつ確実に固定することができる。
さらに、第１嵌合溝の底面と第２嵌合溝の底面とを同一平面上に形成することによって、一方の補強材と他方の補強材とを、交差部において互いに当接させることができ、よって、交差部において、より確実に補強材どうしを位置決めして固定できる。 In addition, by forming the first fitting groove and the second fitting groove orthogonally, the vertical and horizontal stripes used for the wall of the NOMST method or the like are positioned while maintaining the posture at the intersection. Can be fixed easily and securely.
Furthermore, by forming the bottom surface of the first fitting groove and the bottom surface of the second fitting groove on the same plane, one reinforcing material and the other reinforcing material can be brought into contact with each other at the intersection. Therefore, the reinforcing members can be positioned and fixed more reliably at the intersection.

以下、図面を参照して本発明の実施の形態について説明する。
図１〜図３は本発明に係る交差部固定治具１を示すものであり、図１はその斜視図、図２は正面図、図３は背面図である。 Embodiments of the present invention will be described below with reference to the drawings.
1 to 3 show an intersection fixing jig 1 according to the present invention. FIG. 1 is a perspective view thereof, FIG. 2 is a front view, and FIG. 3 is a rear view.

これらの図に示す交差部固定治具１は、ＡＢＳ樹脂で形成されたものであり、治具本体２と、第１嵌合溝３と、第２嵌合溝４とを備えている。
治具本体１は略円柱状のものであり、その表面側に前記第１嵌合溝３が形成されている。この第１嵌合溝３は円柱状のＡＢＳ樹脂の表面側を、軸方向と直交する方向に切り欠いて形成されたものであり、治具本体２の表面側と側面側とに開口している。なお、この第１嵌合溝３には、後述する水平筋が嵌合されるようになっている。
また、治具本体１の裏面側には第２嵌合溝４が形成されている。この第２嵌合溝３は円柱状のＡＢＳ樹脂の裏面側を、軸方向と平行に切り欠いて形成されたものであり、治具本体２の裏面側と両端面側とに開口している。なお、この第２嵌合溝４には後述する鉛直筋が嵌合されるようになっている。 An intersection fixing jig 1 shown in these drawings is formed of ABS resin, and includes a jig body 2, a first fitting groove 3, and a second fitting groove 4.
The jig body 1 has a substantially cylindrical shape, and the first fitting groove 3 is formed on the surface side thereof. The first fitting groove 3 is formed by cutting out the surface side of the cylindrical ABS resin in a direction perpendicular to the axial direction, and is open to the surface side and the side surface side of the jig body 2. Yes. The first fitting groove 3 is adapted to be fitted with horizontal stripes described later.
A second fitting groove 4 is formed on the back side of the jig body 1. The second fitting groove 3 is formed by notching the back side of the cylindrical ABS resin in parallel with the axial direction, and is open to the back side and both end sides of the jig body 2. . The second fitting groove 4 is adapted to be fitted with vertical stripes described later.

前記第１嵌合溝３と第２嵌合溝４とは、直交しており、さらに、第１嵌合溝３および第２嵌合溝４の深さは、等しくかつ、治具本体２の半径と等しい長さに形成されている。
このように第１嵌合溝３と第２嵌合溝４との深さが等しくかつ、治具本体２の半径と等しい長さになっているので、第１嵌合溝３の底面３ａと、第２嵌合溝４の底面４ａとは、治具本体１の直径を通る同一平面上に位置している。また、底面３ａと底面４ａは同一平面上に位置しているので、これらの交差部には矩形状の開口５が形成されている。 The first fitting groove 3 and the second fitting groove 4 are orthogonal to each other, and the depths of the first fitting groove 3 and the second fitting groove 4 are equal and the jig body 2 has the same depth. The length is equal to the radius.
Since the first fitting groove 3 and the second fitting groove 4 have the same depth and the same length as the radius of the jig body 2, the bottom surface 3a of the first fitting groove 3 and The bottom surface 4 a of the second fitting groove 4 is located on the same plane passing through the diameter of the jig body 1. Further, since the bottom surface 3a and the bottom surface 4a are located on the same plane, a rectangular opening 5 is formed at the intersecting portion thereof.

図４は、本発明に係る交差部固定治具１を、ＮＯＭＳＴ工法の立坑用円形ケーソンの補強筋の交差部に使用した例を示している。
補強筋は、水平筋（一方の補強材）１０と鉛直筋（他方の補強材）１１とを有している。立坑用円形ケーソンは筒状に形成されるものであるので、水平筋１０は円弧状に形成され、水平に配置されている。また鉛直筋１１は直線状に形成され、鉛直方向に配置されている。
水平筋１０および鉛直筋１１等の断面矩形状の補強材の表面には、図５に示すように、幅方向に延在する凹状溝１２が、エンボス加工によって複数形成されている。この凹状溝１２を形成する行程は、前記「硬化工程」の後に行われる。このように凹状溝１２を形成することによって、前記補強材の表面には多数の凹凸が形成されている。したがって、この多数の凹凸によって、コンクリートとの高い付着性を確保できる。 FIG. 4 shows an example in which the intersection fixing jig 1 according to the present invention is used at the intersection of reinforcing bars of a circular caisson for shafts of the NOMST method.
The reinforcing bar has a horizontal bar (one reinforcing member) 10 and a vertical bar (the other reinforcing member) 11. Since the vertical caisson for the shaft is formed in a cylindrical shape, the horizontal stripe 10 is formed in an arc shape and is disposed horizontally. The vertical stripes 11 are formed in a straight line and are arranged in the vertical direction.
As shown in FIG. 5, a plurality of concave grooves 12 extending in the width direction are formed on the surface of the reinforcing material having a rectangular cross section such as the horizontal stripes 10 and the vertical stripes 11 by embossing. The step of forming the concave groove 12 is performed after the “curing step”. By forming the concave grooves 12 in this way, a large number of irregularities are formed on the surface of the reinforcing material. Therefore, high adhesion with concrete can be secured by the large number of irregularities.

図４に示すように、水平筋１０と鉛直筋１１とは直交しており、これらの交差部は前記交差部固定治具１によって固定されている。この交差部の拡大図を図５に示す。図５に示すように、水平筋１０（一方の補強材）と鉛直筋（他方の補強材）１１との交差部には交差部固定治具１がその軸を上下に向け、かつ、第１嵌合溝３を外側（図５においては右側）に向けて配置されている。
第１嵌合溝３には、水平筋１０の交差部位が嵌合されている。第１嵌合溝３の深さは水平筋１０の厚さより深くなっており、よって、水平筋１０は交差部において第１嵌合溝３内に完全に嵌合している。ここで、第１嵌合溝３の幅は、水平筋１０の成とほぼ等しいか若干狭くなっている。したがって、第１嵌合溝３に水平筋１０を押し込むことによって、該水平筋１０の上下面が第１嵌合溝３の内面によって弾性的に挟み付けられることで、水平筋１０が第１嵌合溝３に固定されている。また、水平筋１０はその裏面が第１嵌合溝３の底面に当接するようにして、第１嵌合溝３に嵌合されている。 As shown in FIG. 4, the horizontal stripes 10 and the vertical stripes 11 are orthogonal to each other, and these intersections are fixed by the intersection fixing jig 1. An enlarged view of this intersection is shown in FIG. As shown in FIG. 5, at the intersection of the horizontal bar 10 (one reinforcing member) and the vertical bar (the other reinforcing member) 11, the cross-section fixing jig 1 has its axis turned up and down, and the first The fitting groove 3 is arranged toward the outside (right side in FIG. 5).
In the first fitting groove 3, the intersecting portion of the horizontal bars 10 is fitted. The depth of the first fitting groove 3 is deeper than the thickness of the horizontal bar 10, and thus the horizontal bar 10 is completely fitted into the first fitting groove 3 at the intersection. Here, the width of the first fitting groove 3 is substantially equal to or slightly narrower than the horizontal stripe 10. Therefore, by pushing the horizontal bar 10 into the first fitting groove 3, the upper and lower surfaces of the horizontal bar 10 are elastically sandwiched between the inner surfaces of the first fitting groove 3, so that the horizontal bar 10 has the first fitting. It is fixed to the groove 3. Further, the horizontal stripe 10 is fitted in the first fitting groove 3 so that the back surface thereof is in contact with the bottom surface of the first fitting groove 3.

一方、第２嵌合溝３には、鉛直筋１１の交差部が嵌合されている。第２嵌合溝３の深さは鉛直筋１１の幅より浅くなっており、よって、鉛直筋１１は交差部において第２嵌合溝４より内側に突出している。ここで、第２嵌合溝４の幅は、鉛直筋１１の厚さとほぼ等しいか若干狭くなっている。したがって、第２嵌合溝４に鉛直筋１１を押し込むことによって、該鉛直筋１１の両側面が第２嵌合溝４の内面によって弾性的に挟み付けられることで、鉛直筋１１が第２嵌合溝４に固定されている。また、鉛直筋１１はその側端面が第２嵌合溝４の底面に当接するようにして、第２嵌合溝４に嵌合されている。   On the other hand, the intersecting portion of the vertical stripes 11 is fitted in the second fitting groove 3. The depth of the second fitting groove 3 is shallower than the width of the vertical stripe 11, and thus the vertical stripe 11 protrudes inward from the second fitting groove 4 at the intersection. Here, the width of the second fitting groove 4 is substantially equal to or slightly narrower than the thickness of the vertical stripe 11. Therefore, by pushing the vertical stripe 11 into the second fitting groove 4, both side surfaces of the vertical stripe 11 are elastically sandwiched between the inner surfaces of the second fitting groove 4, so that the vertical stripe 11 is fitted into the second fitting groove 4. It is fixed to the groove 4. Further, the vertical stripe 11 is fitted in the second fitting groove 4 so that the side end surface thereof is in contact with the bottom surface of the second fitting groove 4.

図１に示すように、第１嵌合溝３の底面３ａと第２嵌合溝４の底面４ａとは、同一平面上に位置しているので、これら第１嵌合溝３と第２嵌合溝４とにそれぞれ嵌合された水平筋１１の裏面と鉛直筋１４の側端面とは治具本体２に形成されている開口５を介して互いに当接している。
したがって、水平筋１０と鉛直筋１１とを、交差部において互いに当接させることができるので、交差部において水平筋１０や鉛直筋１１に隙間が生じることがないので、より確実に水平筋１０や鉛直筋１０を位置決めして固定できる。
また、図４に示すように、水平筋１０、鉛直筋１１、その他の補強筋等を配筋した後、コンクリートを打設して立坑用円形ケーソンを構築するのであるが、交差部において水平筋１０と鉛直筋１１とに隙間が生じていなので、水平筋１０や鉛直筋１１等を所定の位置に確実に配筋でき、よって、コンクリートをそのかぶり厚が設計どおりとなるように打設できる。 As shown in FIG. 1, since the bottom surface 3a of the first fitting groove 3 and the bottom surface 4a of the second fitting groove 4 are located on the same plane, the first fitting groove 3 and the second fitting groove 3 The back surface of the horizontal bar 11 and the side end surface of the vertical bar 14 respectively fitted in the joint groove 4 are in contact with each other through an opening 5 formed in the jig body 2.
Therefore, since the horizontal stripes 10 and the vertical stripes 11 can be brought into contact with each other at the intersection, there is no gap between the horizontal stripes 10 and the vertical stripes 11 at the intersection, so that the horizontal stripes 10 and The vertical muscle 10 can be positioned and fixed.
Further, as shown in FIG. 4, after arranging horizontal bars 10, vertical bars 11, other reinforcing bars, etc., concrete is placed to construct a circular caisson for shafts. Since there is a gap between the vertical bars 11 and the vertical bars 11, the horizontal bars 10, the vertical bars 11 and the like can be reliably arranged at predetermined positions, so that the concrete can be placed so that the cover thickness is as designed.

図５に示すように、水平筋１０と鉛直筋１１との交差部を交差部固定治具１によって位置決め固定した後、交差部において、水平筋１０と鉛直筋１１とを結束バンド（結束部材）１５によって結束する。
交差部固定治具１によって、互いに交差する水平筋１０と鉛直筋１１とがその交差部において位置決め固定されており、そのうえで、水平筋１０と鉛直筋１１とが結束バンド１５によって結束されているので、水平筋１０および鉛直筋１１が交差部固定治具から外れるのを防止できる。したがって、コンクリート打設の際の衝撃や生コンクリートの圧力等によって、水平筋１０や鉛直筋１１が乱れたり、所定の位置から移動するのを確実に防止できる。 As shown in FIG. 5, after the crossing portion of the horizontal streak 10 and the vertical streak 11 is positioned and fixed by the crossing portion fixing jig 1, the horizontal streak 10 and the vertical streak 11 are bound to each other at the crossing portion (binding member). Bundle with 15.
Since the crossing fixing jig 1 positions and fixes the horizontal stripes 10 and the vertical stripes 11 that intersect each other, and the horizontal stripes 10 and the vertical stripes 11 are bound by the binding band 15. The horizontal bars 10 and the vertical bars 11 can be prevented from coming off from the intersection fixing jig. Therefore, it is possible to reliably prevent the horizontal bars 10 and the vertical bars 11 from being disturbed or moved from a predetermined position due to an impact at the time of placing concrete, a pressure of ready-mixed concrete, or the like.

このように、本実施の形態によれば、水平筋（一方の補強材）１０と鉛直筋（他方の補強材）１１とが交差する交差部に交差部固定治具１を配置し、その第１嵌合溝３に水平筋１０の交差部位を嵌合し、第２嵌合溝３に鉛直筋１１の交差部位を嵌合することによって、これらを所定の姿勢を保持しつつ位置決めして交差部で容易かつ確実に固定することができる。   Thus, according to the present embodiment, the intersection fixing jig 1 is arranged at the intersection where the horizontal reinforcement (one reinforcing material) 10 and the vertical reinforcement (the other reinforcing material) 11 intersect, and the first By fitting the intersecting part of the horizontal bars 10 into the first fitting groove 3 and fitting the intersecting part of the vertical bars 11 into the second fitting groove 3, they are positioned while maintaining a predetermined posture and intersect. It can be easily and reliably fixed at the part.

なお、本実施の形態では、交差部固定用治具１の第１嵌合溝３と第２嵌合溝４とを直交させたが、直交以外で交差する補強材どうしの交差部を固定する場合、例えば、図４に示すように、鉛直筋１１の裏側において、この鉛直筋１１と交差する円弧状の補強筋１６と鉛直筋１１との交差部を固定する場合等においては、第１嵌合溝と第２嵌合溝との交差角度を、鉛直筋１１と補強筋１６どうしの交差部における交差角度と等しく設定すればよい。
また、本実施の形態では、交差部固定治具１を、ＮＯＭＳＴ工法の立坑用円形ケーソンの補強筋の交差部に使用した場合を例にとって説明したが、本発明に交差部固定治具は、これに限ることなく、例えば地中連続壁やその他の各種コンクリート構造物、海洋構造物等の補強材の交差部に使用できる。 In the present embodiment, the first fitting groove 3 and the second fitting groove 4 of the intersecting portion fixing jig 1 are orthogonal to each other, but the intersecting portion of the reinforcing members that intersect at other than orthogonal is fixed. In the case, for example, as shown in FIG. 4, in the case where the crossing portion of the vertical reinforcing bar 11 and the arcuate reinforcing bar 16 intersecting the vertical reinforcing bar 11 is fixed on the back side of the vertical reinforcing bar 11, the first fitting is performed. The crossing angle between the joint groove and the second fitting groove may be set equal to the crossing angle at the crossing portion between the vertical bars 11 and the reinforcing bars 16.
Further, in the present embodiment, the case where the intersection fixing jig 1 is used for the intersection of the reinforcing bars of the circular caisson for shafts of the NOMST method has been described as an example. However, the present invention is not limited to this, and can be used, for example, at the intersections of reinforcing materials such as underground continuous walls, other various concrete structures, and marine structures.

本発明に係る交差部固定治具の一例を示すもので、交差部固定治具の斜視図である。An example of the crossing part fixing jig according to the present invention is shown, and is a perspective view of the crossing part fixing jig. 同、正面図である。FIG. 同、背面図である。FIG. 本発明に係る交差部固定治具を補強筋の交差部に使用した状態を示す斜視図である。It is a perspective view which shows the state which used the cross | intersection fixing jig concerning this invention for the cross | intersection part of a reinforcing bar. 図４における交差部の拡大図である。It is an enlarged view of the cross | intersection part in FIG.

符号の説明Explanation of symbols

１ 交差部固定治具
２ 治具本体
３ 第１嵌合溝
３ａ 第１嵌合溝の底面
４ 第２嵌合溝
４ａ 第２嵌合溝の底面
１０ 水平筋（一方の補強材）
１１ 鉛直筋（他方の補強材）
１５ 結束バンド（結束部材） DESCRIPTION OF SYMBOLS 1 Intersection fixing jig 2 Jig body 3 First fitting groove 3a Bottom surface of first fitting groove 4 Second fitting groove 4a Bottom surface of second fitting groove 10 Horizontal bar (one reinforcing material)
11 Vertical reinforcement (the other reinforcement)
15 Binding band (binding member)

Claims (5)

断面矩形状の補強材どうしを交差させた交差部を固定する交差部固定治具であって、
治具本体と、この治具本体の表面側に形成され、前記一方の補強材の交差部位が嵌合される第１嵌合溝と、前記治具本体の裏面側に形成され、前記他方の補強材の交差部位が嵌合される第２嵌合溝とを備え、
前記第１嵌合溝と第２嵌合溝とは交差していることを特徴とする交差部固定治具。 A crossing portion fixing jig for fixing a crossing portion in which reinforcing members having a rectangular cross section cross each other,
A jig body, a first fitting groove formed on the surface side of the jig body, and into which an intersecting portion of the one reinforcing material is fitted, and formed on the back surface side of the jig body, A second fitting groove into which the intersecting portion of the reinforcing material is fitted,
The intersection fixing jig, wherein the first fitting groove and the second fitting groove intersect each other. 請求項１に記載の交差部固定治具において、
前記第１嵌合溝と第２嵌合溝とは直交していることを特徴とする交差部固定治具。 In the intersection fixing jig according to claim 1,
The intersection fitting jig, wherein the first fitting groove and the second fitting groove are orthogonal to each other. 請求項１または２に記載の交差部固定治具において、
前記第１嵌合溝の底面と、第２嵌合溝の底面とは同一平面上に位置していることを特徴とする交差部固定治具。 In the intersection fixing jig according to claim 1 or 2,
The intersection fixing jig, wherein the bottom surface of the first fitting groove and the bottom surface of the second fitting groove are located on the same plane. 請求項１〜３のいずれか一項に記載の交差部固定治具によって、断面矩形状の補強材どうしを交差させた交差部を固定してなる交差部固定構造であって、
一方の補強材と他方の補強材とが交差する交差部に前記交差部固定治具が配置され、
この交差部固定治具の第１嵌合溝に前記一方の補強材の交差部位が嵌合され、第２嵌合溝に前記他方の補強材の交差部位が嵌合されていることを特徴とする交差部固定構造。 An intersecting portion fixing structure formed by fixing an intersecting portion obtained by intersecting reinforcing members having a rectangular cross section with the intersecting portion fixing jig according to any one of claims 1 to 3,
The intersection fixing jig is arranged at an intersection where one reinforcement and the other reinforcement intersect,
A crossing portion of the one reinforcing member is fitted into the first fitting groove of the crossing portion fixing jig, and a crossing portion of the other reinforcing member is fitted into the second fitting groove. Intersection fixed structure to be. 請求項４に記載の交差部固定構造において、
前記交差部において、前記補強材どうしが結束部材によって結束されていることを特徴とする交差部固定構造。 In the intersection fixed structure according to claim 4,
The crossing portion fixing structure, wherein the reinforcing members are bound by a binding member at the crossing portion.
JP2003411525A 2003-12-10 2003-12-10 Crossing fixing structure Expired - Fee Related JP4307971B2 (en)

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JPS5288313U (en) * 1975-12-25 1977-07-01
JPS5455114U (en) * 1977-09-27 1979-04-17
JPS5536537A (en) * 1978-09-04 1980-03-14 Kyoei Steel Ltd Method of coupling reinforcing iron
JPS61162657A (en) * 1985-01-07 1986-07-23 住友金属工業株式会社 Steel material for concrete and its reinforcement material
JPH01168720U (en) * 1988-05-17 1989-11-28
JPH0762650A (en) * 1993-08-23 1995-03-07 Fujita Corp Assembling method of reinforcement cage
JP2001011199A (en) * 1999-06-25 2001-01-16 Tokyo Seiko Co Ltd Closed-form reinforcing material of fiber reinforced resin and its production

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Publication number Priority date Publication date Assignee Title
JPS5288313U (en) * 1975-12-25 1977-07-01
JPS5455114U (en) * 1977-09-27 1979-04-17
JPS5536537A (en) * 1978-09-04 1980-03-14 Kyoei Steel Ltd Method of coupling reinforcing iron
JPS61162657A (en) * 1985-01-07 1986-07-23 住友金属工業株式会社 Steel material for concrete and its reinforcement material
JPH01168720U (en) * 1988-05-17 1989-11-28
JPH0762650A (en) * 1993-08-23 1995-03-07 Fujita Corp Assembling method of reinforcement cage
JP2001011199A (en) * 1999-06-25 2001-01-16 Tokyo Seiko Co Ltd Closed-form reinforcing material of fiber reinforced resin and its production

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