JP2007120016A - Steel beam reinforcing fitting and method of mounting the same - Google Patents

Steel beam reinforcing fitting and method of mounting the same Download PDF

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JP2007120016A
JP2007120016A JP2005309672A JP2005309672A JP2007120016A JP 2007120016 A JP2007120016 A JP 2007120016A JP 2005309672 A JP2005309672 A JP 2005309672A JP 2005309672 A JP2005309672 A JP 2005309672A JP 2007120016 A JP2007120016 A JP 2007120016A
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steel beam
hardware
web
screw fastening
fastening means
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JP4688628B2 (en
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Hidenari Matsuo
英成 松尾
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Senqcia Corp
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Hitachi Metals Techno Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a steel beam reinforcing fitting which is fixed to a web of a steel beam in order to reinforce the same, wherein the reinforcing fitting is connected to a contact surface of the web in a manner being uniformly united together over the entire body thereof, and to provide a method of mounting the steel beam reinforcing fitting. <P>SOLUTION: The steel beam reinforcing fitting 11 functions to reinforce a through hole 3 formed in a web 2b of the steel beam 2, and it is mounted on a peripheral edge of the through hole 3. The reinforcing fitting 11 has, formed therein, a center hole 11a and insertion holes 11b into each of which a shaft of a screw fastening means 15 for concentrically piercing the web and the reinforcing fitting and fastening the former and the latter together, is inserted. Herein the plurality of screw fastening means aligned in a circumferential direction of the reinforcing fitting, are arranged so as to form concentric double rows, and the screw fastening means forming the single row are staggered with respect to counterparts of the other row adjacent thereto, along an aligning direction. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、ウェブに貫通孔が形成された鉄骨梁を補強するために用いられる鉄骨梁補強金物及びその施工方法に関するものである。   The present invention relates to a steel beam reinforcing hardware used for reinforcing a steel beam in which a through hole is formed in a web, and a construction method thereof.

従来の鉄骨梁補強金物としては、例えば、図15に示すようなものがあった(特許文献1参照)。同図において、鉄骨梁2にはそのウェブ2bの高さ方向(図中上下方向)中央部に貫通孔3が形成されており、この貫通孔3の周囲の縁部を形成するウェブ2bには、中心孔1aを有する梁補強金具1の周縁部が、ボルト5、ナット7、座金10を介して取り付けられている。   As a conventional steel beam reinforcement metal fitting, there existed what was shown, for example in FIG. 15 (refer patent document 1). In the figure, the steel beam 2 has a through hole 3 formed in the center in the height direction (vertical direction in the figure) of the web 2b, and the web 2b forming the peripheral edge of the through hole 3 includes The peripheral portion of the beam reinforcing bracket 1 having the center hole 1a is attached via a bolt 5, a nut 7, and a washer 10.

この従来の梁補強金具1は、その中心孔1aを通って、建物の空調設備や給排水設備等の配管やダクト(図示せず)等を通すことができるようになっている。そして、鉄骨梁2の貫通孔3が形成されたウェブ2bに梁補強金具1が取り付けられていることで、貫通孔3が明けられたことにより低下した鉄骨梁2の強度を補強するようになっている。
特開2003−232077号公報
This conventional beam reinforcing bracket 1 can pass through piping, ducts (not shown), etc., such as air conditioning facilities and water supply / drainage facilities of buildings through the center hole 1a. And the strength of the steel beam 2 lowered by opening the through hole 3 is reinforced by attaching the beam reinforcing metal fitting 1 to the web 2b in which the through hole 3 of the steel beam 2 is formed. ing.
JP 2003-232077 A

しかしながら、上記従来の鉄骨梁補強金物にあっては、ボルト5が梁補強金具1の円周方向に一列に並んで配置されているだけであり、鉄骨梁2のウェブ2bにボルトの挿通孔が互に近接して多数形成されるとウェブ2bの強度が低下するので、梁補強金具1とウェブ2bの接触面においてボルト5を高い密度で配置することができない。   However, in the conventional steel beam reinforcing hardware, the bolts 5 are merely arranged in a line in the circumferential direction of the beam reinforcing bracket 1, and bolt insertion holes are formed in the web 2 b of the steel beam 2. If many are formed close to each other, the strength of the web 2b is reduced, so that the bolts 5 cannot be disposed at a high density on the contact surface between the beam reinforcing bracket 1 and the web 2b.

このため、鉄骨梁2に地震等の荷重による応力が加わってその鉄骨梁2が変形したとき、梁補強金具1とウェブ2bの接触面におけるボルト接合部から離れた位置においては、梁補強金具1とウェブ2bが互いに離間してしまうため、前記接触面が全体にわたって均一に一体化するように連結することができないので、鉄骨梁補強金物による鉄骨梁2の補強効果が十分に得られないという問題があった。   For this reason, when the steel beam 2 is subjected to a stress due to a load such as an earthquake and the steel beam 2 is deformed, the beam reinforcement metal 1 is located at a position away from the bolt joint on the contact surface between the beam reinforcement metal 1 and the web 2b. Since the web 2b and the web 2b are separated from each other, the contact surfaces cannot be connected so as to be uniformly integrated over the entire surface, so that the reinforcing effect of the steel beam 2 by the steel beam reinforcement hardware cannot be obtained sufficiently. was there.

したがって、上記応力が鉄骨梁2に加わったときにこの応力に対する抵抗力を十分に働かせることができないので、応力による鉄骨梁2の変形を防止することができなくなって、鉄骨梁2と柱を組み立てた構造骨組(図示せず)の変形が進み、ひいてはその構造骨組全体の破壊を招くおそれがあるという問題があった。   Therefore, when the stress is applied to the steel beam 2, the resistance to the stress cannot be sufficiently exerted, so that the deformation of the steel beam 2 due to the stress cannot be prevented, and the steel beam 2 and the column are assembled. Further, there has been a problem that the structural frame (not shown) has been deformed, and as a result, the entire structural frame may be destroyed.

そこで本発明は、上記問題点に鑑みて、鉄骨梁を補強するためにそのウェブに固定する補強金物とウェブの接触面が、全体にわたって均一に一体化するように連結することができる鉄骨梁補強金物及びその施工方法を提供することを課題とするものである。   Therefore, in view of the above problems, the present invention provides a steel beam reinforcement that can be connected so that the reinforcement hardware fixed to the web for reinforcing the steel beam and the contact surface of the web are uniformly integrated throughout. It is an object to provide a hardware and a construction method thereof.

上記課題を解決するために本発明は、
鉄骨梁のウェブに形成された貫通孔を補強する鉄骨梁補強金物であって、
前記貫通孔の縁部の周囲に取り付けられ、中心孔が形成され、前記ウェブと前記補強金物とを同軸上に貫通して前記ウェブと前記補強金物とを締結するネジ締結手段の軸部が挿通する挿通孔が形成され、
前記補強金物の周方向に並んで配置された複数の前記ネジ締結手段の列を同心状に二列以上配置すると共に、一つの列を構成する複数のネジ締結手段のそれぞれが、前記列の並ぶ方向において、隣り合う他の列を構成する複数のネジ締結手段のそれぞれに対して互い違いに並んで配置されたことを特徴とするものである。
In order to solve the above problems, the present invention
A steel beam reinforcing hardware for reinforcing a through hole formed in a steel beam web,
Mounted around the edge of the through hole, a central hole is formed, and a shaft portion of a screw fastening means that passes through the web and the reinforcing hardware coaxially and fastens the web and the reinforcing hardware is inserted. An insertion hole is formed,
Two or more rows of the plurality of screw fastening means arranged side by side in the circumferential direction of the reinforcement hardware are arranged concentrically, and each of the plurality of screw fastening means constituting one row is arranged in the row. It is characterized by being arranged in a staggered manner with respect to each of a plurality of screw fastening means constituting other adjacent rows in the direction.

また本発明は、前記補強金物において、半径外方に形成された薄肉部の肉厚寸法よりも大きな肉厚寸法の厚肉部が半径内方に形成され、前記薄肉部及び前記厚肉部のそれぞれに前記ネジ締結手段の各列が配置されたことを特徴とするものである。   Further, in the present invention, in the reinforcing hardware, a thick portion having a thickness larger than the thickness of the thin portion formed radially outward is formed radially inward, and the thin portion and the thick portion are Each row of the screw fastening means is arranged in each.

また本発明は、前記補強金物において、半径外方に形成された薄肉部の肉厚寸法よりも大きな肉厚寸法の厚肉部が半径内方に形成され、前記薄肉部に前記ネジ締結手段の各列が配置されたことを特徴とするものである。   Further, in the present invention, in the reinforcing hardware, a thick portion having a thickness larger than a thickness of a thin portion formed radially outward is formed radially inward, and the screw fastening means is provided on the thin portion. Each column is arranged.

また本発明は、前記補強金物の外周部の、最も外側の前記列に並んで配置された複数の前記雄ネジ部材のそれぞれの間に凹部を形成したことを特徴とするものである。   Further, the present invention is characterized in that a concave portion is formed between each of the plurality of male screw members arranged in the outermost row of the outer peripheral portion of the reinforcing hardware.

また本発明は、前記補強金物の中心孔の近傍に、中心孔の軸方向一端側又は両端側に突出する突部を設けたことを特徴とするものである。   The present invention is characterized in that a protrusion projecting toward one end side or both end sides in the axial direction of the center hole is provided in the vicinity of the center hole of the reinforcing hardware.

また本発明の鉄骨梁補強金物は、前記挿通孔の周面と前記ネジ締結手段の軸部の周面との間の隙間をほぼ零にしたことを特徴とするものである。   Further, the steel beam reinforcing hardware according to the present invention is characterized in that the gap between the peripheral surface of the insertion hole and the peripheral surface of the shaft portion of the screw fastening means is made substantially zero.

また上記課題を解決するために本発明は、
鉄骨梁のウェブに形成された貫通孔を補強する鉄骨梁補強金物の施工方法であって、
前記貫通孔の縁部の周囲に取り付けられ、中心孔が形成され、前記ウェブと前記補強金物とを同軸上に貫通して前記ウェブと前記補強金物とを締結するネジ締結手段の軸部が挿通する挿通孔が形成され、
前記補強金物の周方向に並んで配置された複数の前記ネジ締結手段の列を同心状に二列以上配置すると共に、一つの列を構成する複数のネジ締結手段のそれぞれが、前記列の並ぶ方向において、隣り合う他の列を構成する複数のネジ締結手段のそれぞれに対して互い違いに並んで配置されたことを特徴とするものである。
In order to solve the above problems, the present invention
A method for constructing a steel beam reinforcing hardware that reinforces a through-hole formed in a steel beam web,
Mounted around the edge of the through hole, a central hole is formed, and a shaft portion of a screw fastening means that passes through the web and the reinforcing hardware coaxially and fastens the web and the reinforcing hardware is inserted. An insertion hole is formed,
Two or more rows of the plurality of screw fastening means arranged side by side in the circumferential direction of the reinforcement hardware are arranged concentrically, and each of the plurality of screw fastening means constituting one row is arranged in the row. It is characterized by being arranged in a staggered manner with respect to each of a plurality of screw fastening means constituting other adjacent rows in the direction.

このような本発明の鉄骨梁補強金物によれば、
鉄骨梁のウェブに形成された貫通孔を補強する鉄骨梁補強金物であって、
前記貫通孔の縁部の周囲に取り付けられ、中心孔が形成され、前記ウェブと前記補強金物とを同軸上に貫通して前記ウェブと前記補強金物とを締結するネジ締結手段の軸部が挿通する挿通孔が形成され、
前記補強金物の周方向に並んで配置された複数の前記ネジ締結手段の列を同心状に二列以上配置すると共に、一つの列を構成する複数のネジ締結手段のそれぞれが、前記列の並ぶ方向において、隣り合う他の列を構成する複数のネジ締結手段のそれぞれに対して互い違いに並んで配置されたことにより、
補強金物とウェブの接触面が全体にわたって均一に一体化するように連結することができる。
According to such a steel beam reinforcing metal fitting of the present invention,
A steel beam reinforcing hardware for reinforcing a through hole formed in a steel beam web,
Mounted around the edge of the through hole, a central hole is formed, and a shaft portion of a screw fastening means that passes through the web and the reinforcing hardware coaxially and fastens the web and the reinforcing hardware is inserted. An insertion hole is formed,
Two or more rows of the plurality of screw fastening means arranged side by side in the circumferential direction of the reinforcement hardware are arranged concentrically, and each of the plurality of screw fastening means constituting one row is arranged in the row. In the direction, by being arranged in a staggered manner with respect to each of the plurality of screw fastening means constituting the other adjacent rows,
The contact surfaces of the reinforcing hardware and the web can be connected so as to be uniformly integrated throughout.

また、前記補強金物において、半径外方に形成された薄肉部の肉厚寸法よりも大きな肉厚寸法の厚肉部が半径内方に形成され、前記薄肉部及び前記厚肉部のそれぞれに前記ネジ締結手段の各列が配置されたことにより、鉄骨梁の充分な補強と、補強金物の軽量化を図ることができる。   Further, in the reinforcing hardware, a thick portion having a thickness larger than the thickness of the thin portion formed radially outward is formed radially inward, and each of the thin portion and the thick portion has the above-described thickness. By arranging each row of the screw fastening means, it is possible to sufficiently reinforce the steel beam and reduce the weight of the reinforcing hardware.

また、前記補強金物において、半径外方に形成された薄肉部の肉厚寸法よりも大きな肉厚寸法の厚肉部が半径内方に形成され、前記薄肉部に前記ネジ締結手段の各列が配置されたことにより、鉄骨梁の充分な補強と、補強金物の軽量化を図ることができる。   Further, in the reinforcing hardware, a thick portion having a thickness larger than the thickness of the thin portion formed radially outward is formed radially inward, and each row of the screw fastening means is provided in the thin portion. By arranging, the steel beam can be sufficiently reinforced and the weight of the reinforcement hardware can be reduced.

また、前記補強金物の外周部の、最も外側の前記列に並んで配置された複数の前記ネジ締結手段のそれぞれの間に凹部を形成したことにより、補強金物の軽量化を図ることができる。   Moreover, the weight of the reinforcing hardware can be reduced by forming the recess between each of the plurality of screw fastening means arranged in the outermost row of the outer peripheral portion of the reinforcing hardware.

また、前記補強金物の中心孔の近傍に、中心孔の軸方向一端側又は両端側に突出する突部を設けたことにより、鉄骨鉄筋コンクリート構造等、鉄骨梁をコンクリートで包むようなコンクリート構造体のコンクリート打設時に用いる、ボール紙等の厚紙等で形成された型枠パイプを、ウェブの面と直交する方向に伸びるように保持することが可能となる。   Further, by providing a protrusion projecting toward one end or both ends in the axial direction of the center hole in the vicinity of the center hole of the reinforcing hardware, a concrete structure such as a steel reinforced concrete structure that wraps a steel beam with concrete is provided. It is possible to hold a formwork pipe made of cardboard or the like used for placing concrete so as to extend in a direction perpendicular to the surface of the web.

また、前記挿通孔の周面と前記ネジ締結手段の軸部の周面との間の隙間をほぼ零にしたことにより、地震等の荷重による応力が鉄骨梁に加わった当初から直ちにこの応力に対する抵抗力を発生させることができる。   In addition, since the gap between the peripheral surface of the insertion hole and the peripheral surface of the shaft portion of the screw fastening means is made substantially zero, stress due to a load such as an earthquake is immediately applied to the steel beam from the beginning. Resistance force can be generated.

さらに、本発明の鉄骨梁補強金物の施工方法によれば、
鉄骨梁のウェブに形成された貫通孔を補強する鉄骨梁補強金物の施工方法であって、
前記貫通孔の縁部の周囲に取り付けられ、中心孔が形成され、前記ウェブと前記補強金物とを同軸上に貫通して前記ウェブと前記補強金物とを締結するネジ締結手段の軸部が挿通する挿通孔が形成され、
前記補強金物の周方向に並んで配置された複数の前記ネジ締結手段の列を同心状に二列以上配置すると共に、一つの列を構成する複数のネジ締結手段のそれぞれが、前記列の並ぶ方向において、隣り合う他の列を構成する複数のネジ締結手段のそれぞれに対して互い違いに並んで配置されたことにより、
補強金物とウェブの接触面が全体にわたって均一に一体化するように連結することができる。
Furthermore, according to the construction method of the steel beam reinforcing hardware of the present invention,
A method for constructing a steel beam reinforcing hardware that reinforces a through-hole formed in a steel beam web,
Mounted around the edge of the through hole, a central hole is formed, and a shaft portion of a screw fastening means that passes through the web and the reinforcing hardware coaxially and fastens the web and the reinforcing hardware is inserted. An insertion hole is formed,
Two or more rows of the plurality of screw fastening means arranged side by side in the circumferential direction of the reinforcement hardware are arranged concentrically, and each of the plurality of screw fastening means constituting one row is arranged in the row. In the direction, by being arranged in a staggered manner with respect to each of the plurality of screw fastening means constituting the other adjacent rows,
The contact surfaces of the reinforcing hardware and the web can be connected so as to be uniformly integrated throughout.

以下、本発明による鉄骨梁補強金物及びその施工方法を実施するための最良の形態について、図面に基づいて具体的に説明する。
図1から図4は、本発明の第1の実施の形態に係る鉄骨梁補強金物及びその施工方法について説明するために参照する図である。従来と同様の部分には同じ符号を用いて説明するものとする。
BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out a steel beam reinforcing metal fitting and its construction method according to the present invention will be specifically described below with reference to the drawings.
FIG. 1 to FIG. 4 are views referred to for explaining the steel beam reinforcing hardware and the construction method thereof according to the first embodiment of the present invention. The same parts as those in the prior art will be described using the same reference numerals.

図1において、鉄骨梁2の図中上下一対のフランジ2a間の、ウェブ2bの高さ方向中央部には、図2に示すような丸い形状の貫通孔3が形成されており、この貫通孔3の周囲の縁部を形成するウェブ2bには、貫通孔3を形成したことにより低下した鉄骨梁2の強度を補強するための補強金物11が、図1に示すように、ネジ締結手段25のボルト15、ナット7、座金10を介して固定されている。   In FIG. 1, a round-shaped through hole 3 as shown in FIG. 2 is formed at the center in the height direction of the web 2b between a pair of upper and lower flanges 2a in the figure of the steel beam 2. In the web 2b that forms the peripheral edge of 3, a reinforcing hardware 11 for reinforcing the strength of the steel beam 2 that has decreased due to the formation of the through holes 3 is screw fastening means 25 as shown in FIG. The bolt 15, the nut 7, and the washer 10 are fixed.

補強金物11は、図2に示すように、中心孔11aを有する円環状に形成され、図1に示すように、その中心孔11aの径をウェブ2bの貫通孔3の径と一致させて配置されている。そして、図2に示す12組のネジ締結手段25のボルト15と、図1に示すナット7とをネジ締結することにより、補強金物11をウェブ2bに固定することができる。   As shown in FIG. 2, the reinforcing hardware 11 is formed in an annular shape having a center hole 11a, and as shown in FIG. 1, the diameter of the center hole 11a is arranged to coincide with the diameter of the through hole 3 of the web 2b. Has been. Then, the reinforcing hardware 11 can be fixed to the web 2b by screwing the bolts 15 of the 12 sets of screw fastening means 25 shown in FIG. 2 and the nut 7 shown in FIG.

図1において、補強金物11の体積は、ウェブ2bに形成された貫通孔3の内側かつその肉厚内の空間容量と同じ体積Vの、0.5〜2.5倍とすることが好ましい。これは、補強金物11の体積が上記体積Vの0.5倍以下だと、鉄骨梁2を補強するための強度を発揮することが難しくなる反面、その体積Vの2.5倍以上だと貫通孔の無い無孔梁よりも強度が大きくなる過剰品質となり、重量も重くなって材料の無駄が生じるからである。   In FIG. 1, the volume of the reinforcing hardware 11 is preferably 0.5 to 2.5 times the same volume V as the space capacity inside the through hole 3 formed in the web 2b and within its thickness. If the volume of the reinforcing hardware 11 is 0.5 times or less of the volume V, it will be difficult to exert the strength for reinforcing the steel beam 2, but it will be 2.5 times or more of the volume V. This is because the quality becomes higher than that of a non-hole beam without a through hole, and the weight becomes heavier and material is wasted.

図2に示すように、ネジ締結手段25のボルト15は、補強金物11の半径方向の寸法内に設定される、補強金物11と同心円状の2つのピッチ円C1、C2上に6つずつ配置されている。すなわち6本のボルト15が半径方向内外のピッチ円C1、C2の円周方向に2列並んで配置されている。   As shown in FIG. 2, six bolts 15 of the screw fastening means 25 are arranged on two pitch circles C <b> 1 and C <b> 2 that are concentric with the reinforcing hardware 11 and are set within the radial dimension of the reinforcing hardware 11. Has been. That is, six bolts 15 are arranged in two rows in the circumferential direction of pitch circles C1 and C2 on the inside and outside in the radial direction.

そして、外側の列(ピッチ円C1上)に配置された任意の1つのボルト15は、その列の並ぶ方向(ピッチ円の円周方向)において、内側の列(ピッチ円C2上)に配置された2つのボルト15の中間に配置されている。すなわち外側と内側の各列に配置されたボルト15のそれぞれは、その列の並ぶ方向において、他の列に配置されたボルト15のそれぞれと互い違いに配置されている。   An arbitrary bolt 15 arranged in the outer row (on the pitch circle C1) is arranged in the inner row (on the pitch circle C2) in the direction in which the row is arranged (circumferential direction of the pitch circle). The two bolts 15 are arranged in the middle. That is, each of the bolts 15 arranged in each of the outer and inner rows is alternately arranged with each of the bolts 15 arranged in the other row in the direction in which the rows are arranged.

また、本実施の形態に係るボルト15には、リーマーボルト(「JISハンドブック ねじ」(財団法人 日本規格協会発行)の第40頁の番号2517、及び、「機械工学用語辞典」(理工学社発行)の第592頁の上から第4行目ないし第8行目の記載参照)が用いられている。   In addition, the bolt 15 according to the present embodiment includes a reamer bolt (“JIS Handbook Screw” (issued by the Japanese Standards Association), page 40, number 2517, and “Mechanical Engineering Glossary” (published by Rigaku Corporation). ) On page 592 from the top to the fourth to eighth lines).

図3に示すように、ボルト15の軸部15aは、その先端部に形成されたネジ部15bのネジ山の径よりも大きな径を有している。その軸部15aは、補強金物11に貫通して明けられたボルト挿通孔11bと、鉄骨梁2のウェブ2bにボルト挿通孔11bと同軸状に貫通して明けられたボルト挿通孔2cに共に挿通されている。   As shown in FIG. 3, the shaft portion 15a of the bolt 15 has a diameter larger than the diameter of the screw thread of the screw portion 15b formed at the tip portion thereof. The shaft portion 15a is inserted through a bolt insertion hole 11b opened through the reinforcing metal 11 and a bolt insertion hole 2c opened through the web 2b of the steel beam 2 coaxially with the bolt insertion hole 11b. Has been.

上記ボルト挿通孔11b,2cを、機械工具のリーマーを用いてリーマー仕上加工を行うことにより、ボルト挿通孔11b,2cの周面とボルト15の軸部15aの周面との間はほとんど隙間が無い(隙間がほぼ零の)状態にすることができ、ボルト挿通孔11b、2cへの軸部15aの挿通のために必要な最小限の隙間しか存在しない状態となっている。このため、補強金物11とウェブ2bはそれぞれの接触面に沿って互に相対変位することができないようになっている。   By performing a reamer finishing process on the bolt insertion holes 11b and 2c using a reamer of a machine tool, there is almost no gap between the peripheral surface of the bolt insertion holes 11b and 2c and the peripheral surface of the shaft portion 15a of the bolt 15. There can be no state (the gap is almost zero), and there is only a minimum gap necessary for the insertion of the shaft portion 15a into the bolt insertion holes 11b and 2c. For this reason, the reinforcing hardware 11 and the web 2b cannot be displaced relative to each other along the respective contact surfaces.

このような本発明の第1の実施の形態に係る鉄骨梁補強金物によれば、補強金物11の円周方向に並んで配置された複数のボルト15の列を同心円状に二列配置すると共に、そのうちの一つの列を構成する複数のボルト15のそれぞれが、その列の並ぶ方向において、隣り合う他の列を構成する複数のボルト15のそれぞれに対して互い違いに並んで配置されたことにより、補強金物11とウェブ2bとの接触面が全体にわたって均一に一体化するように連結することができる。   According to the steel beam reinforcing hardware according to the first embodiment of the present invention, the rows of the plurality of bolts 15 arranged side by side in the circumferential direction of the reinforcing hardware 11 are arranged in two concentric circles. Each of the plurality of bolts 15 constituting one row is arranged in a staggered manner with respect to each of the plurality of bolts 15 constituting another row in the row direction. The contact surfaces of the reinforcing hardware 11 and the web 2b can be connected so as to be uniformly integrated throughout.

すなわち、例えば図4において、補強金物11の半径内方の列に並んでいるボルト15の位置AとB間が互いに、補強金物11及びウェブ2bの強度を保持する上でボルト同士がそれ以上接近させることができない最低距離Rだけ互に離れているとすると、補強金物11の円周方向においてボルト15の位置AとBの中間に配置され、かつその位置AとBより半径外方の列に配置されたボルト15の位置Cは、上記最低距離Rずつ上記位置A,Bのそれぞれと離れて配置されることが許容される。   That is, for example, in FIG. 4, between positions A and B of the bolts 15 arranged in the radially inward row of the reinforcing hardware 11, the bolts approach each other in order to maintain the strength of the reinforcing hardware 11 and the web 2 b. Assuming that they are separated from each other by the minimum distance R that cannot be made, they are arranged in the middle of the positions A and B of the bolt 15 in the circumferential direction of the reinforcing hardware 11 and are arranged in a row radially outward from the positions A and B. The position C of the arranged bolt 15 is allowed to be arranged apart from each of the positions A and B by the minimum distance R.

もしボルト15の位置Cが、位置Aを通る同じ半径線の延長上に配置されるとすると、図に示すように、位置Aから上記最低距離Rだけ離れたKの位置に配置されなければならないことになる。このため、補強金物11の円周方向においてボルト15を位置AとBの中間の位置Cに配置した方が、半径方向において位置Cを位置Kよりも、KG間の距離(1−√3÷2)R、すなわち、約0.13Rだけ位置A,Bの列に接近させることができる。   If the position C of the bolt 15 is arranged on the same radial line extending through the position A, it must be arranged at a position K that is separated from the position A by the minimum distance R as shown in the figure. It will be. For this reason, when the bolt 15 is arranged at a position C intermediate between the positions A and B in the circumferential direction of the reinforcing hardware 11, the distance C between the positions KG (1−√3 ÷ 2) The row of positions A and B can be brought closer by R, ie about 0.13R.

また、ボルト15の列の並ぶ方向において、ボルト15の位置Cを位置AとBの中間に配置することにより、補強金物11の円周方向においては、すべてのボルト15間の間隔を上記最低距離Rの半分にすることができることになる。このためボルト15を、補強金物11とウェブ2bの接触面において従来より高い密度で配置することができる。   Further, by arranging the position C of the bolt 15 in the middle of the positions A and B in the direction in which the rows of the bolts 15 are arranged, in the circumferential direction of the reinforcing hardware 11, the distance between all the bolts 15 is set to the minimum distance. It can be reduced to half of R. For this reason, the bolt 15 can be arrange | positioned with a higher density than before in the contact surface of the reinforcement metal body 11 and the web 2b.

このため、補強金物11とウェブ2bとの接触面が全体にわたって均一に一体化するように連結することができ、地震等の荷重による応力が加わって鉄骨梁2が変形したときは、ボルト接合部以外の位置において梁補強金具1とウェブ2bが互いに離間することを防止することができるので、補強金物11による鉄骨梁2の補強効果を十分に得ることができる。   For this reason, it can connect so that the contact surface of the reinforcement hardware 11 and the web 2b may be integrated uniformly over the whole, and when the steel beam 2 deform | transforms by the stress by loads, such as an earthquake, a bolt junction part Since it is possible to prevent the beam reinforcing metal fitting 1 and the web 2b from being separated from each other at other positions, the reinforcing effect of the steel beam 2 by the reinforcing hardware 11 can be sufficiently obtained.

そして、ボルト15の本数も従来より増やせるため、上記応力が鉄骨梁2に加わったときにこの応力に対する抵抗力も大きくすることができるので、応力による鉄骨梁2の変形を防止することができると共に、鉄骨梁2と柱を組み立てた構造骨組(図示せず)の変形を防止することもできる。   And since the number of the bolts 15 can be increased as compared with the prior art, when the stress is applied to the steel beam 2, the resistance to the stress can be increased, so that the deformation of the steel beam 2 due to the stress can be prevented, Deformation of a structural frame (not shown) in which the steel beam 2 and the column are assembled can also be prevented.

ところで、前記従来の鉄骨梁補強金物にあっては、図16に示すように、ボルト5の軸部5aが通る梁補強金具1のボルト挿通孔1bの周面、及びウェブ2bのボルト挿通孔2cの周面のそれぞれと、ボルト5の軸部5aの周面との間に、通常設定される大き目のクリアランスGがある。   By the way, in the conventional steel beam reinforcing hardware, as shown in FIG. 16, the peripheral surface of the bolt insertion hole 1b of the beam reinforcing bracket 1 through which the shaft portion 5a of the bolt 5 passes, and the bolt insertion hole 2c of the web 2b. Between each of the peripheral surfaces and the peripheral surface of the shaft portion 5a of the bolt 5, there is a large clearance G that is normally set.

このため、地震等の荷重による応力が鉄骨梁2に加わったとき、図17に示すように、ボルト5の軸部5aの周面が、梁補強金具1及びウェブ2bのボルト挿通孔1b,2cの互いに対向する周面両方に接触するまでの間、梁補強金具1とウェブ2bのそれぞれの接触面間に滑りが生じ、その滑り動作中は滑り摩擦力しか働かないので、応力に対する抵抗力がほとんど発揮できなかった。   For this reason, when stress due to a load such as an earthquake is applied to the steel beam 2, as shown in FIG. 17, the peripheral surface of the shaft portion 5 a of the bolt 5 is bolt insertion holes 1 b and 2 c of the beam reinforcing bracket 1 and the web 2 b. Until contact with both of the circumferential surfaces facing each other, slip occurs between the respective contact surfaces of the beam reinforcing member 1 and the web 2b, and only sliding frictional force acts during the sliding operation. I couldn't demonstrate it.

そして、図17に示すように、上記互いに対向するボルト挿通孔1b,2cの周面が共にボルト5の軸部5aの周面の互いに反対側に接触して、梁補強金具1とウェブ2bのそれぞれの接触面間の滑り動作が終了したときから、梁補強金具1とウェブ2bが互に反対方向A,Bに向かって、それまでに引き続き相対移動しようとすることにより、ボルト5の軸部5aに対してその長さ方向と直角方向に働く剪断力Fが、地震等の荷重による応力に対する抵抗力となって働くようになる。   Then, as shown in FIG. 17, the circumferential surfaces of the bolt insertion holes 1b, 2c facing each other are in contact with the opposite sides of the circumferential surface of the shaft portion 5a of the bolt 5, and the beam reinforcing bracket 1 and the web 2b When the sliding movement between the contact surfaces is finished, the beam reinforcing bracket 1 and the web 2b continue to move relative to each other in the opposite directions A and B, so that the shaft portion of the bolt 5 The shearing force F acting in the direction perpendicular to the length direction with respect to 5a acts as a resistance force against stress caused by a load such as an earthquake.

このため、上記応力が鉄骨梁2に加わった時点からこの応力に対する抵抗力が発生するまでの間、すなわち梁補強金具1とウェブ2b間の滑り動作が行われている間は、応力に対する抵抗力が微小になるので、応力による鉄骨梁2の変形を防止することができない。このため、上記応力が鉄骨梁2に加わった時点からこの応力に対する抵抗力が発生するまでの間は、鉄骨梁2の変形が進むことにより、鉄骨梁2と柱を組み立てた構造骨組の変形も進み、ひいてはその構造骨組全体の破壊を招くおそれがあるという問題があった。   For this reason, during the period from when the stress is applied to the steel beam 2 until the resistance to the stress is generated, that is, during the sliding operation between the beam reinforcing bracket 1 and the web 2b, the resistance to the stress. Therefore, the deformation of the steel beam 2 due to stress cannot be prevented. For this reason, since the deformation of the steel beam 2 proceeds from the time when the stress is applied to the steel beam 2 until the resistance to the stress is generated, the deformation of the structural frame in which the steel beam 2 and the column are assembled is also reduced. There was a problem that it could go on and eventually destroy the entire structural framework.

これに対し、本発明の第1の実施の形態に係る鉄骨梁補強金物によれば、ボルト15にリーマーボルトを用いたため、挿通孔の周面と前記ネジ締結手段の軸部の周面との間の隙間をほぼ零にしたことにより、ボルト軸部15aの回りには、従来の図16に示した通常のボルト軸部5aの回りに設定されるような大き目の隙間Gが無いので、地震等の荷重による応力が鉄骨梁2に加わったとき、補強金物11と鉄骨梁2のウェブ2bとの間の接触面において上記隙間分の滑りが生じることはない。   On the other hand, according to the steel beam reinforcing metal fitting according to the first embodiment of the present invention, since the reamer bolt is used for the bolt 15, the peripheral surface of the insertion hole and the peripheral surface of the shaft portion of the screw fastening means. Since the gap between them is almost zero, there is no large gap G around the bolt shaft portion 15a shown in FIG. When stress due to a load such as the above is applied to the steel beam 2, the clearance corresponding to the gap does not occur on the contact surface between the reinforcing hardware 11 and the web 2 b of the steel beam 2.

したがって、地震等の荷重による応力が鉄骨梁2に加わった当初の段階から直ちに、この応力に対する抵抗力を発生させることができる。すなわち補強金物11とウェブ2bが互いに反対方向に相対移動させようとする力が働くことによる反力として、ボルト15の軸部15aに対してその長さ方向と直角方向に働く大きな剪断力(図17の符号F参照)を発生させることができる。   Therefore, a resistance force against the stress can be generated immediately from the initial stage when the stress due to the load such as an earthquake is applied to the steel beam 2. That is, as a reaction force caused by a force that causes the reinforcing hardware 11 and the web 2b to move relative to each other in the opposite directions, a large shearing force acting in a direction perpendicular to the length direction of the shaft portion 15a of the bolt 15 (see FIG. 17 (see symbol F).

このため、地震等の荷重による応力が鉄骨梁2に加わった当初の段階から直ちに、この応力に対する抵抗力を発生させることができるため、地震等の荷重による応力による鉄骨梁2の変形を防止することができると共に、鉄骨梁2と柱を組み立てた構造骨組の変形やその破壊を防止することもできる。   For this reason, since the resistance force to this stress can be generated immediately from the initial stage when the stress due to the load such as an earthquake is applied to the steel beam 2, the deformation of the steel beam 2 due to the stress due to the load such as an earthquake is prevented. In addition, it is possible to prevent deformation and destruction of the structural frame in which the steel beam 2 and the column are assembled.

また、このような本発明の第1の実施の形態によれば、補強金物11はその中心孔11aの径を鉄骨梁2の貫通孔3の径と一致させてウェブ2bに固定され、貫通孔3の径方向内側には他の構造部材は何も設けられないので、貫通孔3の大きさをできるだけ小さくすることができて、鉄骨梁2の強度の過度の低下を防止することができる。   Further, according to the first embodiment of the present invention, the reinforcing hardware 11 is fixed to the web 2b so that the diameter of the central hole 11a coincides with the diameter of the through hole 3 of the steel beam 2, and the through hole Since no other structural member is provided on the inner side in the radial direction of 3, the size of the through hole 3 can be made as small as possible, and an excessive decrease in the strength of the steel beam 2 can be prevented.

図5は、本発明の第2の実施の形態に係る鉄骨梁補強金物について説明するために参照する図である。   FIG. 5 is a view referred to for explaining the steel beam reinforcing hardware according to the second embodiment of the present invention.

前記第1の実施の形態に係る補強金物11においては、その半径方向の各位置においてほぼ一定の肉厚寸法(補強金物11の軸線と平行方向の寸法)を有していたのに対して、この第2の実施の形態に係る補強金物21においては、図5(a)に示すように、その半径外方に薄肉部21aが形成され、この薄肉部21aよりも大きな肉厚寸法の厚肉部21bが半径内方に形成されている点において異なるものである。そして、薄肉部21aと厚肉部21bのそれぞれにボルト15が挿通されて設けられている。   In the reinforcement hardware 11 according to the first embodiment, the radial thickness has a substantially constant thickness dimension (dimension in the direction parallel to the axis of the reinforcement hardware 11). In the reinforcing hardware 21 according to the second embodiment, as shown in FIG. 5 (a), a thin wall portion 21a is formed on the outer side of the radius, and the thick wall has a larger wall thickness than the thin wall portion 21a. This is different in that the portion 21b is formed radially inward. And the bolt 15 is penetrated and provided in each of the thin part 21a and the thick part 21b.

補強金物21は、図5(b)に示すように、中心孔21aを有する円環状に形成され、図5(a)に示すように、その中心孔21cの径を鉄骨梁2の貫通孔3の径と一致させて配置されている。そして、図5(b)に示す12組のネジ締結手段25のボルト15と、図5(a)に示すナット7とをネジ締結することにより、補強金物21をウェブ2bに固定している。   The reinforcing hardware 21 is formed in an annular shape having a center hole 21a as shown in FIG. 5 (b), and the diameter of the center hole 21c is set to the through hole 3 of the steel beam 2 as shown in FIG. 5 (a). It is arranged so as to match the diameter. The bolts 15 of the 12 sets of screw fastening means 25 shown in FIG. 5B and the nuts 7 shown in FIG. 5A are fastened to fix the reinforcing hardware 21 to the web 2b.

このような本発明の第2の実施の形態に係る鉄骨梁補強金物によれば、前記第1の実施の形態と同様に、補強金物11の円周方向に並んで配置された複数のボルト15の列を同心円状に二列配置すると共に、そのうちの一つの列を構成する複数のボルト15のそれぞれが、その列の並ぶ方向において、隣り合う他の列を構成する複数のボルト15のそれぞれに対して互い違いに並んで配置されたことにより、補強金物11とウェブ2bの接触面が全体にわたって均一に一体化するように連結することができる。   According to such a steel beam reinforcing hardware according to the second embodiment of the present invention, a plurality of bolts 15 arranged side by side in the circumferential direction of the reinforcing hardware 11 as in the first embodiment. Are arranged in two concentric circles, and each of the plurality of bolts 15 constituting one of the rows is arranged on each of the plurality of bolts 15 constituting another adjacent row in the direction in which the rows are arranged. On the other hand, by being arranged in a staggered manner, the contact surfaces of the reinforcing hardware 11 and the web 2b can be connected so as to be uniformly integrated throughout.

このため、地震等の荷重による応力が加わったときにこの応力に対する抵抗力が十分に働くので、応力による鉄骨梁2の変形を防止することができると共に、鉄骨梁2と柱を組み立てた構造骨組の変形を防止することもできる。   For this reason, when a stress due to a load such as an earthquake is applied, a sufficient resistance force against the stress acts, so that the deformation of the steel beam 2 due to the stress can be prevented and the structural frame in which the steel beam 2 and the column are assembled. Can also be prevented.

また、その半径外方に形成された薄肉部21aよりも大きな肉厚寸法の厚肉部21bが半径内方に形成されているので、半径内方における厚肉部21bが鉄骨梁2を補強する機能を充分発揮することができると共に、その半径外方に厚肉部21bよりも肉厚寸法が小さい薄肉部21aを形成したことにより、補強金物21の軽量化を図ることができる。   Further, since the thick portion 21b having a larger thickness than the thin portion 21a formed on the outer side of the radius is formed radially inward, the thick portion 21b on the inner side of the radius reinforces the steel beam 2. The function can be sufficiently exerted, and the reinforcement metal 21 can be reduced in weight by forming the thin part 21a having a smaller thickness than the thick part 21b outside the radius.

図6は、本発明の第3の実施の形態に係る鉄骨梁補強金物について説明するために参照する図である。   FIG. 6 is a view referred to for explaining a steel beam reinforcing hardware according to the third embodiment of the present invention.

この第3の実施の形態に係る補強金物31においては、前記第2の実施の形態に係る補強金物21と同様に、その半径外方に形成された薄肉部31aの肉厚寸法よりも大きな肉厚寸法の厚肉部31bが半径内方に形成されているが、その厚肉部31bの外周面31cが鉄骨梁2の貫通孔3の周面内に嵌合していると共に、薄肉部31aに内外2列のボルト15が配置されている点において、前記第2の実施の形態に係る補強金物21と異なるものである。   In the reinforcing hardware 31 according to the third embodiment, the thickness larger than the thickness of the thin portion 31a formed on the outer side of the radius is the same as the reinforcing hardware 21 according to the second embodiment. A thick portion 31b having a thick dimension is formed radially inward, and an outer peripheral surface 31c of the thick portion 31b is fitted in a peripheral surface of the through hole 3 of the steel beam 2 and a thin portion 31a. This is different from the reinforcing hardware 21 according to the second embodiment in that the inner and outer two rows of bolts 15 are arranged.

このような第3の実施の形態に係る鉄骨梁補強金物によれば、前記第2の実施の形態と同様の効果を有する他に、半径内方における厚肉部31bの外周面31cが鉄骨梁2の貫通孔3の内周面に嵌合しているので、貫通孔3が変形するのを防止するよう厚肉部31bが支持することにより、この厚肉部31bが鉄骨梁2を補強することができる。   According to such a steel beam reinforcing metal fitting according to the third embodiment, in addition to having the same effects as those of the second embodiment, the outer peripheral surface 31c of the thick portion 31b in the radius inside is a steel beam. Since the thick-walled portion 31b is supported so as to prevent the through-hole 3 from being deformed, the thick-walled portion 31b reinforces the steel beam 2. be able to.

また、鉄骨梁2のウェブ2bの肉厚中心から軸方向に大きく偏った位置の補強金物31の部分に補強金物の総合抵抗力が発生することを防止できるので、鉄骨梁2やそのウェブ2bに偏心モーメントによる局部変形を生じさせることを防止することができる。   Further, since it is possible to prevent the total resistance force of the reinforcement hardware from being generated in the portion of the reinforcement hardware 31 at a position greatly deviated in the axial direction from the center of the thickness of the web 2b of the steel beam 2, the steel beam 2 and the web 2b thereof can be prevented. It is possible to prevent local deformation due to the eccentric moment.

図7は、本発明の第4の実施の形態に係る鉄骨梁補強金物について説明するために参照する図である。   FIG. 7 is a view referred to for explaining a steel beam reinforcing hardware according to the fourth embodiment of the present invention.

この第4の実施の形態に係る補強金物41においては、図7(a)に示すように、前記第2の実施の形態に係る補強金物21と同様に、その半径外方における薄肉部41aよりも大きな肉厚寸法の厚肉部41bが半径内方に形成されていると共に、薄肉部41aと厚肉部41bのそれぞれにボルト15が設けられているが、図7(b)に示すように、補強金物41の外周部の、外側の列に並んで配置された複数のボルト15のそれぞれの間に切り欠き凹部41dが形成されている点において、前記第2の実施の形態と異なるものである。   In the reinforcement hardware 41 according to the fourth embodiment, as shown in FIG. 7 (a), in the same manner as the reinforcement hardware 21 according to the second embodiment, from the thin portion 41a outside the radius. A thick portion 41b having a larger thickness is formed radially inward, and a bolt 15 is provided on each of the thin portion 41a and the thick portion 41b. As shown in FIG. The second embodiment is different from the second embodiment in that a notch recess 41d is formed between each of the plurality of bolts 15 arranged in the outer row of the outer peripheral portion of the reinforcing metal piece 41. is there.

このような第4の実施の形態に係る鉄骨梁補強金物によれば、前記第2の実施の形態と同様の効果を有する他に、補強金物41の外周部の、外側の列に並んで配置された複数のボルト15のそれぞれの間に切り欠き凹部41dを形成したことにより、補強金物41の軽量化を図ることができる。   According to such a steel beam reinforcing hardware according to the fourth embodiment, in addition to having the same effect as that of the second embodiment, it is arranged in the outer row of the outer peripheral portion of the reinforcing hardware 41. By forming the notch recess 41d between each of the plurality of bolts 15 formed, the weight of the reinforcing hardware 41 can be reduced.

図8は、本発明の第5の実施の形態に係る鉄骨梁補強金物について説明するために参照する図である。   FIG. 8 is a diagram referred to for explaining a steel beam reinforcing hardware according to the fifth embodiment of the present invention.

この第5の実施の形態に係る補強金物51においては、前記第3の実施の形態に係る鉄骨梁補強金物31と同様に、その半径外方における薄肉部51aよりも大きな肉厚寸法の厚肉部51bが半径内方に形成されていると共に、その厚肉部51bの外周面51cが鉄骨梁2の貫通孔3の周面内に嵌合しているが、図8(b)に示すように、補強金物51の外周部の、外側の列に並んで配置された複数のボルト15のそれぞれの間に切り欠き凹部51dが形成されている点において、前記第3の実施の形態と異なるものである。   In the reinforcement hardware 51 according to the fifth embodiment, as in the steel beam reinforcement hardware 31 according to the third embodiment, the thick wall having a larger wall thickness than the thin wall portion 51a outside the radius. The portion 51b is formed radially inward, and the outer peripheral surface 51c of the thick portion 51b is fitted in the peripheral surface of the through-hole 3 of the steel beam 2, as shown in FIG. 8 (b). Furthermore, the difference from the third embodiment in that a notch recess 51d is formed between each of the plurality of bolts 15 arranged in the outer row of the outer peripheral portion of the reinforcing metal piece 51. It is.

このような本発明の第5の実施の形態によれば、前記第3の実施の形態と同様の効果を有する他に、前記第4の実施の形態と同様に、外側の列に並んで配置された複数のボルト15のそれぞれの間に切り欠き凹部51dを形成したことにより、補強金物51の軽量化を図ることができる。   According to the fifth embodiment of the present invention as described above, in addition to having the same effect as the third embodiment, it is arranged side by side in the outer row as in the fourth embodiment. By forming the notch recess 51d between each of the plurality of bolts 15, the weight of the reinforcing hardware 51 can be reduced.

図9は、本発明の第6の実施の形態に係る鉄骨梁補強金物について説明するために参照する図である。   FIG. 9 is a diagram referred to for explaining the steel beam reinforcing hardware according to the sixth embodiment of the present invention.

この第6の実施の形態に係る補強金物61においては、前記第2の実施の形態に係る補強金物21と同様に、その半径外方に薄肉部61aが形成され、この薄肉部61aよりも大きな肉厚寸法の厚肉部61bが半径内方に形成されていると共に、薄肉部61aと厚肉部61bのそれぞれにボルト15が設けられているが、その厚肉部61bの半径内側に、中心孔61cの軸方向一端側に円筒状に突出する突部61dが形成されている点において、前記第2の実施の形態と異なるものである。   In the reinforcement hardware 61 according to the sixth embodiment, similarly to the reinforcement hardware 21 according to the second embodiment, a thin-walled portion 61a is formed outside the radius, and is larger than the thin-walled portion 61a. A thick portion 61b having a thickness is formed radially inward, and a bolt 15 is provided on each of the thin portion 61a and the thick portion 61b. This is different from the second embodiment in that a protrusion 61d protruding in a cylindrical shape is formed on one end side in the axial direction of the hole 61c.

このような本発明の第6の実施の形態によれば、前記第2の実施の形態と同様の効果を有する他に、補強金物61の厚肉部61bの半径内側に、中心孔61cの軸方向一端側に円筒状に突出する突部61dを設けたことにより、図10,11に示すような、SRC(鉄骨鉄筋コンクリート)構造等、鉄骨梁2をコンクリート72で包み込むようなコンクリート構造体100の、コンクリート打設時に用いるボール紙等の厚紙等で形成された型枠パイプ73を、ウェブ2bの面と直交する方向に伸びるように保持することが可能となる。上記図10,11は、鉄骨梁2をコンクリート72で包み込んだコンクリート構造体100を示す図である。   According to the sixth embodiment of the present invention as described above, in addition to having the same effect as that of the second embodiment, the shaft of the center hole 61c is formed inside the thick portion 61b of the reinforcing hardware 61. By providing a projecting portion 61d that protrudes in a cylindrical shape on one end side in the direction, a concrete structure 100 such as an SRC (steel reinforced concrete) structure such as shown in FIGS. The formwork pipe 73 formed of cardboard or the like used for placing concrete can be held so as to extend in a direction perpendicular to the surface of the web 2b. FIGS. 10 and 11 are views showing a concrete structure 100 in which the steel beam 2 is wrapped with concrete 72.

このような型枠パイプ73をコンクリート72の打設時に用いることにより、コンクリート構造体の中に、鉄骨梁2の貫通孔3や、補強金物61の中心孔61c等と連通する通路75を形成して、型枠パイプ73を除去したときに、建物の空調設備や給排水設備等の配管やダクト等をその通路75に通すことができる。   By using such a formwork pipe 73 when placing the concrete 72, a passage 75 communicating with the through hole 3 of the steel beam 2, the center hole 61c of the reinforcing hardware 61, and the like is formed in the concrete structure. Thus, when the formwork pipe 73 is removed, piping, ducts, etc., such as air conditioning facilities and water supply / drainage facilities of the building can be passed through the passage 75.

図12は、本発明の第7の実施の形態に係る鉄骨梁補強金物について説明するために参照する図である。   FIG. 12 is a view referred to for explaining the steel beam reinforcing hardware according to the seventh embodiment of the present invention.

この第7の実施の形態に係る補強金物71においては、前記第5の実施の形態に係る補強金物51と同様に、その半径外方における薄肉部71aよりも大きな肉厚寸法の厚肉部71bが半径内方に形成されていると共に、その厚肉部71bの外周面71cが鉄骨梁2の貫通孔3の周面内に嵌合しているが、その厚肉部71bの半径内側に、中心孔71dの軸方向一端側に円筒状に突出する突部71eが形成されている点において、前記第5の実施の形態に係る補強金物51と異なるものである。   In the reinforcement hardware 71 according to the seventh embodiment, similarly to the reinforcement hardware 51 according to the fifth embodiment, the thick wall portion 71b having a larger wall thickness than the thin wall portion 71a outside the radius. Is formed radially inward, and the outer peripheral surface 71c of the thick portion 71b is fitted in the peripheral surface of the through hole 3 of the steel beam 2, but on the inner radius of the thick portion 71b, This is different from the reinforcing hardware 51 according to the fifth embodiment in that a protrusion 71e protruding in a cylindrical shape is formed on one axial end side of the center hole 71d.

このような本発明の第7の実施の形態によれば、前記第5の実施の形態と同様の効果を有する他に、前記第6の実施の形態と同様に、補強金物71の厚肉部71bの半径内側に、中心孔71dの軸方向一端側に円筒状に突出する突部71eを設けたことにより、図13,14に示すような、SRC構造等、鉄骨梁2をコンクリート72で包み込むようなコンクリート構造体105の、コンクリート打設時に用いる型枠パイプ73を、ウェブ2bの面と直交する方向に伸びるように保持することが可能となる。上記図13,14は、鉄骨梁2をコンクリート72で包み込んだコンクリート構造体105を示す図である。   According to the seventh embodiment of the present invention as described above, in addition to having the same effect as that of the fifth embodiment, similarly to the sixth embodiment, the thick wall portion of the reinforcing hardware 71 is provided. By providing a projecting portion 71e protruding in a cylindrical shape on one end side in the axial direction of the center hole 71d inside the radius 71b, the steel beam 2 such as an SRC structure as shown in FIGS. It is possible to hold the formwork pipe 73 of the concrete structure 105 used when placing the concrete so as to extend in a direction perpendicular to the surface of the web 2b. FIGS. 13 and 14 are diagrams showing a concrete structure 105 in which the steel beam 2 is wrapped with concrete 72.

なお、前記実施の形態においては、金属により形成した補強金物を鉄骨梁2のウェブ2bに固定する場合について説明したが、一定以上の強度を有するものであれば、金属の補強金物の代りに、繊維補強プラスチックとか、繊維補強コンクリート等の、他のどのような材質の補強部材を用いてもよい。   In addition, in the said embodiment, although the case where the reinforcement metal object formed with the metal was fixed to the web 2b of the steel beam 2 was demonstrated, if it has intensity | strength more than fixed, instead of a metal reinforcement metal object, Any other reinforcing material such as fiber reinforced plastic or fiber reinforced concrete may be used.

また、前記実施の形態においては、貫通孔3や鉄骨梁補強金物11等を円形状に形成した場合について説明したが、それらは円形状以外の、どのような形状に形成したものであってもよいことはいうまでもない。 Moreover, in the said embodiment, although the case where the through-hole 3 and the steel beam reinforcement metal fitting 11 etc. were formed in circular shape was demonstrated, they may be what was formed in what shape other than circular shape. Needless to say, it is good.

また、前記実施の形態においては、ボルト15としてリーマーボルトを用いたが、ボルト挿通孔の周面とボルト軸部の周面との間の隙間をほぼ零にすることができるものであれば、リーマーボルト以外のものや方法を用いてもよい。
或は、ボルト挿通孔の周面とボルト軸部の周面との間の隙間が、リーマボルト以外の通常のボルトのように、通常のクリアランスG(図16,17参照)を有するような鉄骨梁補強金物にも本発明は適用することができる。
Moreover, in the said embodiment, although the reamer bolt was used as the volt | bolt 15, if the clearance gap between the surrounding surface of a volt | bolt insertion hole and the surrounding surface of a bolt axial part can be made into substantially zero, You may use things and methods other than a reamer bolt.
Alternatively, a steel beam in which the clearance between the peripheral surface of the bolt insertion hole and the peripheral surface of the bolt shaft portion has a normal clearance G (see FIGS. 16 and 17) like a normal bolt other than a reamer bolt. The present invention can also be applied to reinforcing hardware.

また、前記実施の形態においてはボルト15が2つのピッチ円上に(2列に)並べられた場合について説明したが、ボルト15が3つ以上のピッチ円上に(3列以上に)並べられた場合にあっても本発明は適用することができる。   In the above embodiment, the case where the bolts 15 are arranged on two pitch circles (in two rows) has been described. However, the bolts 15 are arranged on three or more pitch circles (in three rows or more). Even in such a case, the present invention can be applied.

また、前記第6,第7の実施の形態においては、厚肉部61b,71bの半径内側に、中心孔61c,71dの軸方向一端側に円筒状に突出する突部61d,71eが設けられた場合について説明したが、中心孔61c,71dの軸方向両端側に突部61d,71eを設けるようにしてもよい。この場合は、上記コンクリートの型枠パイプ73がさらに正確にウェブ2bの面と直交する方向に伸びるように保持することができる。   Further, in the sixth and seventh embodiments, protrusions 61d and 71e protruding in a cylindrical shape are provided on one end side in the axial direction of the center holes 61c and 71d inside the thick portions 61b and 71b. However, the protrusions 61d and 71e may be provided on both axial ends of the center holes 61c and 71d. In this case, the concrete formwork pipe 73 can be held so as to extend more accurately in a direction perpendicular to the surface of the web 2b.

本発明の第1の実施の形態に係る補強金物11をウェブ2bに固定した鉄骨梁2の断面図である。It is sectional drawing of the steel beam 2 which fixed the reinforcement metal object 11 which concerns on the 1st Embodiment of this invention to the web 2b. 図1における鉄骨梁2のA−A線矢視図である。It is an AA arrow directional view of the steel beam 2 in FIG. 図1におけるボルト15周辺の拡大断面図である。FIG. 2 is an enlarged cross-sectional view around a bolt 15 in FIG. 1. 図2における各ボルト15の位置関係を説明するための概念図である。It is a conceptual diagram for demonstrating the positional relationship of each volt | bolt 15 in FIG. 本発明の第2の実施の形態に係る補強金物21をウェブ2bに固定した鉄骨梁2を示す図であり、図5(a)は鉄骨梁2の側面断面図、図5(b)は図5(a)における鉄骨梁2のA−A線矢視図である。It is a figure which shows the steel beam 2 which fixed the reinforcement metal fixture 21 based on the 2nd Embodiment of this invention to the web 2b, Fig.5 (a) is side sectional drawing of the steel beam 2, FIG.5 (b) is a figure. It is an AA arrow directional view of the steel beam 2 in 5 (a). 本発明の第3の実施の形態に係る補強金物31をウェブ2bに固定した鉄骨梁2を示す図であり、図6(a)は鉄骨梁2の側面断面図、図6(b)は図6(a)における鉄骨梁2のA−A線矢視図である。It is a figure which shows the steel beam 2 which fixed the reinforcement metal 31 which concerns on the 3rd Embodiment of this invention to the web 2b, FIG. 6 (a) is side sectional drawing of the steel beam 2, FIG.6 (b) is a figure. It is an AA arrow directional view of the steel beam 2 in 6 (a). 本発明の第4の実施の形態に係る補強金物41をウェブ2bに固定した鉄骨梁2を示す図であり、図7(a)は鉄骨梁2の側面断面図、図7(b)は図7(a)における鉄骨梁2のA−A線矢視図である。It is a figure which shows the steel beam 2 which fixed the reinforcement metal fitting 41 based on the 4th Embodiment of this invention to the web 2b, Fig.7 (a) is side sectional drawing of the steel beam 2, FIG.7 (b) is a figure. It is an AA arrow directional view of the steel beam 2 in 7 (a). 本発明の第5の実施の形態に係る補強金物51をウェブ2bに固定した鉄骨梁2を示す図であり、図8(a)は鉄骨梁2の側面断面図、図8(b)は図8(a)における鉄骨梁2のA−A線矢視図である。It is a figure which shows the steel beam 2 which fixed the reinforcement metal 51 concerning the 5th Embodiment of this invention to the web 2b, FIG. 8 (a) is side sectional drawing of the steel beam 2, FIG.8 (b) is a figure. It is an AA arrow directional view of the steel beam 2 in 8 (a). 本発明の第6の実施の形態に係る補強金物61をウェブ2bに固定した鉄骨梁2を示す図であり、図9(a)は鉄骨梁2の側面断面図、図9(b)は図9(a)における鉄骨梁2のA−A線矢視図である。It is a figure which shows the steel beam 2 which fixed the reinforcement metal fitting 61 based on the 6th Embodiment of this invention to the web 2b, Fig.9 (a) is side sectional drawing of the steel beam 2, FIG.9 (b) is a figure. It is an AA arrow line view of the steel beam 2 in 9 (a). 図9に示す鉄骨梁2をコンクリートで包み込んだコンクリート構造体100のコンクリート打設時の状態を示す断面図である。It is sectional drawing which shows the state at the time of concrete placement of the concrete structure 100 which wrapped the steel beam 2 shown in FIG. 9 with concrete. 図10に示すコンクリート構造構造体100のA−A線断面図である。It is the sectional view on the AA line of the concrete structure 100 shown in FIG. 本発明の第7の実施の形態に係る補強金物71をウェブ2bに固定した鉄骨梁2を示す図であり、図12(a)は鉄骨梁2の側面断面図、図12(b)は図12(a)における鉄骨梁2のA−A線矢視図である。It is a figure which shows the steel beam 2 which fixed the reinforcement metal piece 71 concerning the 7th Embodiment of this invention to the web 2b, Fig.12 (a) is side sectional drawing of the steel beam 2, FIG.12 (b) is a figure. It is an AA arrow directional view of the steel beam 2 in 12 (a). 図12に示す鉄骨梁2をコンクリートで包み込んだコンクリート構造体105のコンクリート打設時の状態を示す断面図である。It is sectional drawing which shows the state at the time of concrete placement of the concrete structure 105 which wrapped the steel beam 2 shown in FIG. 12 with concrete. 図13に示すコンクリート構造体105のA−A線断面図である。It is AA sectional view taken on the line of the concrete structure 105 shown in FIG. 従来の梁補強金具1をウェブ2bに固定した鉄骨梁2の断面図である。It is sectional drawing of the steel beam 2 which fixed the conventional beam reinforcement metal fitting 1 to the web 2b. 図15におけるボルト5周辺の拡大断面図である。FIG. 16 is an enlarged cross-sectional view around a bolt 5 in FIG. 15. 図16におけるボルト5周辺の変化した状態を示す拡大断面図である。It is an expanded sectional view which shows the changed state of the volt | bolt 5 periphery in FIG.

符号の説明Explanation of symbols

1 梁補強金具
1b ボルト挿通孔
2 鉄骨梁
2a フランジ
2b ウェブ
2c ボルト挿通孔
3 貫通孔
5 ボルト
7 ナット
10 座金
11 補強金物
11a 内周面
11b ボルト挿通孔
15 ボルト
15a 軸部
15b ネジ部
21 補強金物
21a 薄肉部
21b 厚肉部
25 ネジ締結手段
31 補強金物
31a 薄肉部
31b 厚肉部
31c 厚肉部外周面
41 補強金物
41a 薄肉部
41b 厚肉部
41c 中心孔
41d 切り欠き凹部
51 補強金物
51a 薄肉部
51b 厚肉部
51c 厚肉部外周面
51d 切り欠き凹部
61 補強金物
61a 薄肉部
61b 厚肉部
61c 中心孔
61d 突部
71 補強金物
71a 薄肉部
71b 厚肉部
71c 厚肉部外周面
71d 中心孔
71e 突部
72 コンクリート
73 型枠パイプ
75 通路
100、105 コンクリート構造体
DESCRIPTION OF SYMBOLS 1 Beam reinforcement metal fitting 1b Bolt insertion hole 2 Steel beam 2a Flange 2b Web 2c Bolt insertion hole 3 Through hole 5 Bolt 7 Nut 10 Washer 11 Reinforcement metal 11a Inner peripheral surface 11b Bolt insertion hole 15 Bolt 15a Shaft 15b Screw part 21 Reinforcement metal 21a Thin portion 21b Thick portion 25 Screw fastening means 31 Reinforcement metal 31a Thin portion 31b Thick portion 31c Thick portion outer peripheral surface 41 Reinforcement hardware 41a Thin portion 41b Thick portion 41c Center hole 41d Notch recess 51 Reinforcement 51a Thin portion 51b Thick part 51c Thick part outer peripheral surface 51d Notch concave part 61 Reinforcement metal 61a Thin part 61b Thick part 61c Center hole 61d Protrusion 71 Reinforcement metal 71a Thin part 71b Thick part 71c Thick part outer peripheral surface 71d Center hole 71e Projection 72 Concrete 73 Formwork pipe 75 Passage 100 105 concrete structure

Claims (7)

鉄骨梁のウェブに形成された貫通孔を補強する鉄骨梁補強金物であって、
前記貫通孔の縁部の周囲に取り付けられ、中心孔が形成され、前記ウェブと前記補強金物とを同軸上に貫通して前記ウェブと前記補強金物とを締結するネジ締結手段の軸部が挿通する挿通孔が形成され、
前記補強金物の周方向に並んで配置された複数の前記ネジ締結手段の列を同心状に二列以上配置すると共に、一つの列を構成する複数のネジ締結手段のそれぞれが、前記列の並ぶ方向において、隣り合う他の列を構成する複数のネジ締結手段のそれぞれに対して互い違いに並んで配置されたことを特徴とする鉄骨梁補強金物。
A steel beam reinforcing hardware for reinforcing a through hole formed in a steel beam web,
Mounted around the edge of the through hole, a central hole is formed, and a shaft portion of a screw fastening means that passes through the web and the reinforcing hardware coaxially and fastens the web and the reinforcing hardware is inserted. An insertion hole is formed,
Two or more rows of the plurality of screw fastening means arranged side by side in the circumferential direction of the reinforcement hardware are arranged concentrically, and each of the plurality of screw fastening means constituting one row is arranged in the row. A steel beam reinforced hardware characterized by being arranged in a staggered manner with respect to each of a plurality of screw fastening means constituting other adjacent rows in the direction.
前記補強金物において、半径外方に形成された薄肉部の肉厚寸法よりも大きな肉厚寸法の厚肉部が半径内方に形成され、前記薄肉部及び前記厚肉部のそれぞれに前記ネジ締結手段の各列が配置されたことを特徴とする請求項1に記載の鉄骨梁補強部材。   In the reinforcing hardware, a thick portion having a thickness larger than the thickness of the thin portion formed radially outward is formed radially inward, and the screw fastening is performed on each of the thin portion and the thick portion. The steel beam reinforcing member according to claim 1, wherein each row of means is arranged. 前記補強金物において、半径外方に形成された薄肉部の肉厚寸法よりも大きな肉厚寸法の厚肉部が半径内方に形成され、前記薄肉部に前記ネジ締結手段の各列が配置されたことを特徴とする請求項1に記載の鉄骨梁補強部材。   In the reinforcing hardware, a thick portion having a thickness larger than the thickness of the thin portion formed radially outward is formed radially inward, and each row of the screw fastening means is disposed in the thin portion. The steel beam reinforcing member according to claim 1, wherein: 前記補強金物の外周部の、最も外側の前記列に並んで配置された複数の前記ネジ締結手段のそれぞれの間に凹部を形成したことを特徴とする請求項1から3のいずれかに記載の鉄骨梁補強部材。   4. The recess according to claim 1, wherein a concave portion is formed between each of the plurality of screw fastening means arranged in the outermost row of the outer peripheral portion of the reinforcement hardware. 5. Steel beam reinforcing member. 前記補強金物の中心孔の近傍に、中心孔の軸方向一端側又は両端側に突出する突部を設けたことを特徴とする請求項1から4のいずれかに記載の鉄骨梁補強部材。   The steel beam reinforcing member according to any one of claims 1 to 4, wherein a protrusion projecting toward one end side or both end sides in the axial direction of the center hole is provided in the vicinity of the center hole of the reinforcing hardware. 前記挿通孔の周面と前記ネジ締結手段の軸部の周面との間の隙間をほぼ零にしたことを特徴とする請求項1から5のいずれかに記載の鉄骨梁補強部材。   The steel beam reinforcing member according to any one of claims 1 to 5, wherein a gap between the peripheral surface of the insertion hole and the peripheral surface of the shaft portion of the screw fastening means is substantially zero. 鉄骨梁のウェブに形成された貫通孔を補強する鉄骨梁補強金物の施工方法であって、
前記貫通孔の縁部の周囲に取り付けられ、中心孔が形成され、前記ウェブと前記補強金物とを同軸上に貫通して前記ウェブと前記補強金物とを締結するネジ締結手段の軸部が挿通する挿通孔が形成され、
前記補強金物の周方向に並んで配置された複数の前記ネジ締結手段の列を同心状に二列以上配置すると共に、一つの列を構成する複数のネジ締結手段のそれぞれが、前記列の並ぶ方向において、隣り合う他の列を構成する複数のネジ締結手段のそれぞれに対して互い違いに並んで配置されたことを特徴とする鉄骨梁補強金物の施工方法。

A method for constructing a steel beam reinforcing hardware that reinforces a through-hole formed in a steel beam web,
Mounted around the edge of the through hole, a central hole is formed, and a shaft portion of a screw fastening means that passes through the web and the reinforcing hardware coaxially and fastens the web and the reinforcing hardware is inserted. An insertion hole is formed,
Two or more rows of the plurality of screw fastening means arranged side by side in the circumferential direction of the reinforcement hardware are arranged concentrically, and each of the plurality of screw fastening means constituting one row is arranged in the row. A construction method of a steel beam reinforced hardware characterized by being arranged in a staggered manner with respect to each of a plurality of screw fastening means constituting other adjacent rows in the direction.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013080650A (en) * 2011-10-05 2013-05-02 Ngk Spark Plug Co Ltd Fuel cell

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003232077A (en) * 2001-12-04 2003-08-19 Hitachi Metals Ltd Beam reinforcing fixture and beam through hole reinforcing structure using the same

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003232077A (en) * 2001-12-04 2003-08-19 Hitachi Metals Ltd Beam reinforcing fixture and beam through hole reinforcing structure using the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013080650A (en) * 2011-10-05 2013-05-02 Ngk Spark Plug Co Ltd Fuel cell

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