JP2005180175A - Reinforcing fitting for reinforced concrete perforated beam - Google Patents

Reinforcing fitting for reinforced concrete perforated beam Download PDF

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JP2005180175A
JP2005180175A JP2005013992A JP2005013992A JP2005180175A JP 2005180175 A JP2005180175 A JP 2005180175A JP 2005013992 A JP2005013992 A JP 2005013992A JP 2005013992 A JP2005013992 A JP 2005013992A JP 2005180175 A JP2005180175 A JP 2005180175A
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annular
portions
metal fitting
reinforcing metal
reinforcing
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Tsukasa Ota
司 大田
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Koryo Kaihatsu Kk
コーリョー開発株式会社
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Abstract

<P>PROBLEM TO BE SOLVED: To provide, without using a connecting rod as a separate component, a reinforcing fitting which can prevent a relative deformation of an internal and external ring shaped bodies while keeping a workability of bending to form a steel bar. <P>SOLUTION: The reinforcing fitting for the reinforced concrete perforated beam is formed of an internal and external double ring-shaped bodies 2, 3 by bending a steel bar 1. The internal ring-shaped body 2 is a polygon, a plurality of whose edges 2a to d are formed to approximately come into contact with the external ring-shaped body 3. At the same time, both ends 1a, 1b of the steel bar are bent from the sides 3e, 3f of the external ring-shaped body 3 and intersects with the sides 2e, 2f of the internal ring-shaped body 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、配管や配線等のための貫通孔を有する鉄筋コンクリートの有孔梁において、その貫通孔周囲に配設される補強金具に関する。   The present invention relates to a reinforcing metal fitting disposed around a through hole in a reinforced concrete perforated beam having a through hole for piping, wiring, and the like.
鉄筋コンクリート有孔梁については、その貫通孔周辺のひび割れを防止するための補強手段として、補強金具(補強筋)を貫通孔周囲に配設するようにしている。この補強金具に関しては、特許文献1,2に示すように、一本の金属棒体を折り曲げ形成することにより、いわゆる“一筆書き”状としたものが知られている。   With respect to reinforced concrete perforated beams, reinforcing metal fittings (reinforcing bars) are arranged around the through hole as a reinforcing means for preventing cracks around the through hole. With respect to this reinforcing metal fitting, as shown in Patent Documents 1 and 2, a so-called “one-stroke writing” shape is known by bending a single metal rod.
これら特許文献1,2に記載された補強金具はいずれも、内外二重の環状体を共通一本の棒体より一部を交差させて形成し、その棒体の両端末部を溶接して無端状に形成したものであり、これによって、素材の部品点数を減少させ、加工を簡単にするという効果を得ている。   Both of these reinforcing metal fittings described in Patent Documents 1 and 2 are formed by crossing a part of an inner and outer double annular body from one common bar body, and welding both end portions of the bar body. It is formed in an endless shape, thereby obtaining the effect of reducing the number of parts of the material and simplifying the processing.
特開平11−193599号公報JP 11-193599 A 特開2000−136597号公報JP 2000-136597 A
上記従来の補強金具にあっては、内外二重の環状体を共通一本の棒体より形成し、その一部を交差させてあるだけなので、内側の環状体と外側の環状体との接点はその交差部位の一点しかなく、つまり内側環状体の支持点は一点のみである。従って、実際には連結杆の溶接で内外の環状体を連結し支持点を増やしておかなければ、コンクリート打設時の圧力で内外環状体が相対的に変形してしまう可能性(外側環状体に対し内側環状体がねじれてしまう等)を排除できない。   In the above-mentioned conventional reinforcing metal fittings, the inner and outer double annular bodies are formed from a single common rod body, and only a part of them intersects, so the contact point between the inner annular body and the outer annular body Has only one point of intersection, that is, only one point of support for the inner ring. Therefore, in reality, if the inner and outer annular bodies are connected by welding of the connecting rods and the supporting points are not increased, the inner and outer annular bodies may be relatively deformed by the pressure during concrete placement (outer annular bodies). On the other hand, the inner annular body is twisted cannot be excluded.
本発明はこの点に着目したもので、別部品の連結杆を用いることなく、一本の金属棒体を折り曲げ形成するという加工性を維持しながら内外環状体の相対変形を防止することができるようにした補強金具を提案する。   The present invention pays attention to this point, and it is possible to prevent relative deformation of the inner and outer annular bodies while maintaining the workability of bending and forming a single metal rod without using a connecting rod of another part. Proposed reinforcing metal fittings are proposed.
本発明の補強金具は、一本の金属棒体を折り曲げて内外二重の環状体を形成してなる鉄筋コンクリート有孔梁の補強金具であって、少なくとも内側環状体が多角形で且つ該多角形の複数の角部が外側環状体に略接するように形成され、そして、金属棒体両端部分が外側環状体の位置から折り曲げられ、内側環状体の辺部と交差することを特徴とする。   The reinforcing metal fitting of the present invention is a reinforcing metal fitting for a reinforced concrete perforated beam formed by bending a single metal rod to form an inner and outer double annular body, and at least the inner annular body is polygonal and the polygonal A plurality of corners of the metal rod are substantially in contact with the outer annular body, and both end portions of the metal rod body are bent from the position of the outer annular body and intersect with the sides of the inner annular body.
従来技術の補強金具では内外環状体が交差部位の一点だけで接し、該交差部位の他に内側環状体の支持点が無いので、外側環状体の内方に内側環状体が浮いている状態で施工される。従って、連結杆を別途接続していなければ内外環状体の相対変形を防止することが難しい。これに対し、本発明の補強金具の場合、内側環状体を多角形とし且つその複数の角部を外側環状体に略接するようにしてあるので、施工時に針金等の結束具や溶接で当該各角部を外側環状体に固定してしまうことができ、これにより内側環状体の支持点を複数得られるので、連結杆が無くても内外環状体の相対変形を防ぎ得る。なお、“略接する”とは、5mm程度の多少の隙間があったりあるいは重なっていたとしても固定に問題ないため、その程度の誤差は許容範囲ということである。   In the reinforcing metal fittings of the prior art, the inner and outer annular bodies are in contact with each other at only one point of intersection, and there is no supporting point for the inner annular body in addition to the intersection part, so that the inner annular body is floating inside the outer annular body It is constructed. Therefore, it is difficult to prevent relative deformation of the inner and outer annular bodies unless the connecting rod is connected separately. On the other hand, in the case of the reinforcing metal fitting of the present invention, the inner annular body has a polygonal shape and a plurality of corners thereof are substantially in contact with the outer annular body. Since the corner portion can be fixed to the outer annular body, and thereby a plurality of support points of the inner annular body can be obtained, relative deformation of the inner and outer annular bodies can be prevented even without a connecting rod. Note that “substantially contact” means that there is no problem in fixing even if there is a slight gap of about 5 mm or there is an overlap, and such an error means an allowable range.
また加えて、本発明の補強金具の場合、金属棒体両端部分が外側環状体の位置から折り曲げられて内側環状体の辺部と交差するようにしてあることから、この両端部分も内側環状体の変形止め(ねじれ止め)として一役買っており、より相対変形防止の効果が高まっている。この場合、金属棒体両端部分は、互いに内側環状体の反対側で交差するものとしておくと、該両端部分で内側環状体を互いに逆側から挟み込むような状態とでき、より効果的な変形止め機能を得られる。   In addition, in the case of the reinforcing metal fitting of the present invention, both end portions of the metal rod are bent from the position of the outer annular body so as to intersect with the side portions of the inner annular body. It also plays a role as an anti-deformation (torsion prevention), and the effect of preventing relative deformation is increasing. In this case, if both end portions of the metal rods cross each other on the opposite side of the inner annular body, the inner annular body can be sandwiched from the opposite sides at both end portions, so that more effective deformation prevention Get functionality.
このような本発明の補強金具では、加工の容易性から、内側環状体は四角形としてその四つの角部が外側環状体に略接するものとし、支持点を上下左右の4点得るようにするのが良い。そして、この場合の外側環状体は、内側環状体の四角形が内接する円形等も可能ではあるが、加工の容易性を考慮すると、八角形としてその四つの辺部に四角形の各角部が略接するようにするのが好ましい。   In such a reinforcing metal fitting of the present invention, for ease of processing, the inner annular body is a quadrangular shape, and its four corners are substantially in contact with the outer annular body, so that four support points, upper, lower, left and right are obtained. Is good. In this case, the outer annular body may be a circle in which the inner annular body is inscribed. However, considering the ease of processing, each corner of the quadrangle is approximately on the four sides as an octagon. It is preferable to make contact.
また、本発明の補強金具において、金属棒体両端部分は、内側環状体と交差して内方へ突出するようにし、該突端部がスリーブ保持手段となるようにしておくと、別途に保持手段を設けずに済むので好ましい。なおかつこの場合、スリーブ保持手段を内外二重の環状体で支持する構造を得られるので、スリーブ保持手段としての強度的にも有利である。また、本発明の補強金具においては、金属棒体両端部分と内側環状体との交差部位を溶接や結束具等で固定するようにしておくと、変形止め機能がさらに向上するので好ましい。   Further, in the reinforcing metal fitting of the present invention, both end portions of the metal rod body intersect with the inner annular body and project inward, and the projecting end portion serves as a sleeve retaining means. This is preferable because it is not necessary to provide a gap. In addition, in this case, a structure for supporting the sleeve holding means with the inner and outer double annular bodies can be obtained, which is advantageous in terms of strength as the sleeve holding means. Further, in the reinforcing metal fitting of the present invention, it is preferable to fix the crossing portion between the both end portions of the metal rod body and the inner annular body by welding, a binding tool or the like because the deformation preventing function is further improved.
本発明の補強金具によれば、多角形の内側環状体が外側環状体に略内接する構造とすることにより、内側環状体の支持点を複数得ることができ、加えて、金属棒体両端部分を外側環状体の位置から折り曲げて内側環状体の辺部と交差する構造とすることにより、内側環状体の変形止め機能を持たせることができるので、一本の金属棒体からなる加工性は維持したままで内外環状体の相対変形防止機能を格段に向上させることができる。   According to the reinforcing metal fitting of the present invention, it is possible to obtain a plurality of support points of the inner annular body by adopting a structure in which the polygonal inner annular body is substantially inscribed in the outer annular body, and in addition, both ends of the metal rod body By bending the outer annular body from the position of the outer annular body and intersecting with the side of the inner annular body, the inner annular body can be provided with a deformation preventing function. The relative deformation preventing function of the inner and outer annular bodies can be remarkably improved while maintaining.
本発明に係る補強金具の好適な実施形態につき、図1〜3に示している。図1は正面から見た平面図、図2はその斜視図、図3は施工状態で示した図である。   A preferred embodiment of the reinforcing metal fitting according to the present invention is shown in FIGS. FIG. 1 is a plan view seen from the front, FIG. 2 is a perspective view thereof, and FIG. 3 is a diagram showing a construction state.
この例の補強金具は、一本の金属棒体1を折り曲げて、内側環状体2と外側環状体3とからなる内外二重の環状体を連続形成した“一筆書き”の構造となっている。そして、その金属棒体1の両端部分1a,1bは、外側環状体3の位置から折り曲げられ、内側環状体2と交差している。   The reinforcing metal fitting in this example has a “one-stroke writing” structure in which a single metal rod 1 is bent to continuously form an inner and outer double annular body composed of an inner annular body 2 and an outer annular body 3. . Then, both end portions 1 a and 1 b of the metal rod 1 are bent from the position of the outer annular body 3 and intersect the inner annular body 2.
内側環状体2は加工の容易な四角形、特に本例では正方形で、その四つの角部2a,2b,2c,2dが、それぞれ外側環状体3の四つの辺部3a,3b,3c,3dに略接し、上下左右の4点で支持できるようになっている。そのうちの一つ、角部2d及び辺部3dは、外側環状体3を形成した金属棒体1が内側環状体2へ移行し且つ内側環状体2を形成した金属棒体1が外側環状体3へ移行する部位である。従って当該部位は、角部2dと辺部3dとが重なって接する状態である。   The inner annular body 2 is a square that can be easily processed, in particular, a square in this example, and its four corners 2a, 2b, 2c, and 2d are respectively connected to the four sides 3a, 3b, 3c, and 3d of the outer annular body 3. It is in close contact and can be supported at four points, top, bottom, left and right. One of them, the corner portion 2d and the side portion 3d, has the metal rod body 1 forming the outer annular body 3 shifted to the inner annular body 2 and the metal rod body 1 forming the inner annular body 2 is the outer annular body 3. It is the part which moves to. Therefore, the part is in a state where the corner 2d and the side 3d overlap each other.
一方の外側環状体3は、本例の場合加工の容易な八角形で、その八つの辺部のうち一つおきにして、四つの辺部3a,3b,3c,3dに対し内側環状体2の角部2a,2b,2c,2dが略接している。また、本例の場合、角部2a,2b,2c,2dが略接する辺部3a,3b,3c,3d以外の辺部のうちの二つの辺部3e,3fから金属棒体両端部分1a,1bが内方へ折り曲げられている。   One outer annular body 3 is an octagon that can be easily processed in this example, and every other one of the eight sides, the inner annular body 2 with respect to the four sides 3a, 3b, 3c, 3d. Corners 2a, 2b, 2c, 2d are substantially in contact with each other. In the case of this example, the two ends 3a, 3f of the sides other than the sides 3a, 3b, 3c, 3d with which the corners 2a, 2b, 2c, 2d are substantially in contact with both ends 1a, 1b is bent inward.
金属棒体両端部分1a,1bは、外側環状体3の辺部3e,3fから折り曲げられ、内側環状体2の二つの辺部2e,2fと交差することで変形止めとして機能している。本例ではこの交差部位を溶接して固定してあり、変形止めの機能を向上させてある。その溶接又は結束等の固定は、補強金具の製造時でも良いし、施工現場にて行っても良い。また、金属棒体両端部分1a,1bは、互いに内側環状体2の反対側(正面と背面)で辺部2e,2fと交差しており、内側環状体2を互いに逆側から挟み込むような状態として、より効果的な変形止め機能を得られるようになっている。さらに、本例における両端部分1a,1bは、内側環状体2と交差してさらに内方へ突出する長さを持たせてあり、その両突端部1c,1dに樹脂製のキャップCを被せ、スリーブS(図3参照)の保持手段が形成されている。キャップCを被せることにより、スリーブS及び突端部1c,1d双方の保護が図れるようになっている。   The metal rod end portions 1a and 1b are bent from the side portions 3e and 3f of the outer annular body 3, and function as a deformation stopper by intersecting the two side portions 2e and 2f of the inner annular body 2. In this example, the intersecting portion is welded and fixed, and the function of preventing deformation is improved. The fixing such as welding or binding may be performed at the time of manufacturing the reinforcing metal fitting or may be performed at a construction site. Further, both end portions 1a and 1b of the metal rod intersect the sides 2e and 2f on the opposite sides (front and back) of the inner annular body 2, and the inner annular body 2 is sandwiched from the opposite sides. As a result, a more effective deformation preventing function can be obtained. Furthermore, the both end portions 1a and 1b in this example have a length that intersects the inner annular body 2 and further protrudes inward, and covers the protruding end portions 1c and 1d with a resin cap C, A holding means for the sleeve S (see FIG. 3) is formed. By covering the cap C, both the sleeve S and the projecting ends 1c and 1d can be protected.
以上の形状を持つ補強金具は、図3の施工状態に示すように、梁を形成する主筋Mに針金等の結束具にて配筋される。すなわち、外側環状体3の向きを両端部分1a,1bのある方が下側となるようにし、そして、その辺部3a,3b,3c,3dを、これらに略接している内側環状体2の角部2a,2b,2c,2dごと、針金等の結束具(図示略)にて主筋Mに固定する。これにより、辺部3a,3b,3c,3dと共に角部2a,2b,2c,2dも主筋Mに固定され、内側環状体2の支持点が4点確保されることになる。従って、コンクリート打設時に内側環状体2の変形(ねじれ、ゆがみ等)が防止される。また一方、スリーブ保持手段である金属棒体両端部分1a,1bも内側環状体2と外側環状体3とによる二重支持構造を得られているので、変形し難く、強度が高い。   As shown in the construction state of FIG. 3, the reinforcing metal fitting having the above shape is arranged by a binding tool such as a wire on the main reinforcement M forming the beam. That is, the direction of the outer annular body 3 is such that the end portions 1a and 1b are on the lower side, and the side portions 3a, 3b, 3c, and 3d of the inner annular body 2 that are substantially in contact with them. Each corner 2a, 2b, 2c, 2d is fixed to the main muscle M with a binding tool (not shown) such as a wire. As a result, the corner portions 2a, 2b, 2c, and 2d as well as the side portions 3a, 3b, 3c, and 3d are fixed to the main muscle M, and four support points for the inner annular body 2 are secured. Therefore, deformation (twist, distortion, etc.) of the inner annular body 2 is prevented during concrete placement. On the other hand, the metal rod end portions 1a and 1b, which are sleeve holding means, also have a double support structure with the inner annular body 2 and the outer annular body 3, so that they are difficult to deform and have high strength.
本発明に係る補強金具の平面図。The top view of the reinforcement metal fitting which concerns on this invention. 図1の補強金具の斜視図。The perspective view of the reinforcement metal fitting of FIG. 図1の補強金具の施工例を示す図。The figure which shows the construction example of the reinforcement metal fitting of FIG.
符号の説明Explanation of symbols
1 金属棒体
1a,b 両端部分
1c,d 突端部
2 内側環状体
2a〜d 角部
2e,f 辺部
3 外側環状体
3a〜f 辺部
DESCRIPTION OF SYMBOLS 1 Metal rod 1a, b Both-ends part 1c, d Protruding end part 2 Inner annular body 2a-d Corner | angular part 2e, f Side part 3 Outer annular body 3a-f Side part

Claims (6)

  1. 一本の金属棒体を折り曲げて内外二重の環状体を形成してなる鉄筋コンクリート有孔梁の補強金具であって、
    少なくとも内側環状体が多角形で且つ該多角形の複数の角部が外側環状体に略接するように形成され、そして、金属棒体両端部分が前記外側環状体の位置から折り曲げられ、前記内側環状体の辺部と交差することを特徴とする補強金具。
    A reinforcing metal fitting for a reinforced concrete perforated beam formed by bending a single metal rod to form a double ring inside and outside,
    At least the inner annular body is polygonal, and a plurality of corners of the polygon are formed so as to be substantially in contact with the outer annular body, and both end portions of the metal rod are bent from the position of the outer annular body, Reinforcing metal fittings characterized by crossing the sides of the body.
  2. 前記金属棒体両端部分は、互いに前記内側環状体の反対側で交差することを特徴とする請求項1記載の補強金具。   The reinforcing metal fitting according to claim 1, wherein both end portions of the metal rod intersect each other on the opposite side of the inner annular body.
  3. 前記内側環状体は四角形で、その四つの角部が前記外側環状体に略接することを特徴とする請求項1又は請求項2記載の補強金具。   The reinforcing metal fitting according to claim 1 or 2, wherein the inner annular body is a quadrangle, and four corners thereof are substantially in contact with the outer annular body.
  4. 前記外側環状体は八角形で、該八角形の四つの辺部に前記内側環状体の各角部が略接することを特徴とする請求項3記載の補強金具。   The reinforcing metal fitting according to claim 3, wherein the outer annular body is octagonal, and each corner portion of the inner annular body is substantially in contact with four sides of the octagon.
  5. 前記金属棒体両端部分は、前記内側環状体と交差して内方へ突出し、該突端部がスリーブ保持手段となることを特徴とする請求項1〜4のいずれか1項に記載の補強金具。   The reinforcing metal fitting according to any one of claims 1 to 4, wherein both end portions of the metal rod intersect the inner annular body and project inward, and the projecting ends serve as sleeve holding means. .
  6. 前記金属棒体両端部分と前記内側環状体との交差部位を固定してあることを特徴とする請求項1〜5のいずれか1項に記載の補強金具。   The reinforcing metal fitting according to any one of claims 1 to 5, wherein a crossing portion between both end portions of the metal rod body and the inner annular body is fixed.
JP2005013992A 2005-01-21 2005-01-21 Reinforcing fitting for reinforced concrete perforated beam Pending JP2005180175A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010055422A3 (en) * 2008-11-12 2010-07-29 Antonios Anagnostopoulos Method and device for increasing the rigidity of braces made of concrete steel or wire
JP2010242482A (en) * 2009-03-16 2010-10-28 Tm Giken Co Ltd Reinforcing fitting for reinforced-concrete perforated beam
JP2013036186A (en) * 2011-08-05 2013-02-21 Nippon Splice Sleeve Kk Reinforcement structure provided with joint hardware portion and opening hole part arranged side by side
JP2013036185A (en) * 2011-08-05 2013-02-21 Nippon Splice Sleeve Kk Reinforcement structure provided with joint hardware portion and opening hole part arranged side by side
KR20190098599A (en) * 2018-02-14 2019-08-22 한국토지주택공사 Rigidity reinforcement apparatus for beam with web openings

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010055422A3 (en) * 2008-11-12 2010-07-29 Antonios Anagnostopoulos Method and device for increasing the rigidity of braces made of concrete steel or wire
JP2010242482A (en) * 2009-03-16 2010-10-28 Tm Giken Co Ltd Reinforcing fitting for reinforced-concrete perforated beam
JP2013036186A (en) * 2011-08-05 2013-02-21 Nippon Splice Sleeve Kk Reinforcement structure provided with joint hardware portion and opening hole part arranged side by side
JP2013036185A (en) * 2011-08-05 2013-02-21 Nippon Splice Sleeve Kk Reinforcement structure provided with joint hardware portion and opening hole part arranged side by side
KR20190098599A (en) * 2018-02-14 2019-08-22 한국토지주택공사 Rigidity reinforcement apparatus for beam with web openings
KR102131491B1 (en) * 2018-02-14 2020-07-09 한국토지주택공사 Rigidity reinforcement apparatus for beam with web openings

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