JP7343296B2 - Beam reinforcement structure and beam reinforcement method - Google Patents

Beam reinforcement structure and beam reinforcement method Download PDF

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JP7343296B2
JP7343296B2 JP2019081815A JP2019081815A JP7343296B2 JP 7343296 B2 JP7343296 B2 JP 7343296B2 JP 2019081815 A JP2019081815 A JP 2019081815A JP 2019081815 A JP2019081815 A JP 2019081815A JP 7343296 B2 JP7343296 B2 JP 7343296B2
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main body
web
reinforcing metal
metal fitting
body portion
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JP2020180432A (en
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久智 望月
拓 冨田
郁実 林
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Senqcia Corp
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Description

本発明は、建築構造物を構成し、貫通孔を有する梁を補強するための梁補強金具、梁補強構造および梁補強方法に関するものである。 The present invention relates to a beam reinforcing metal fitting, a beam reinforcing structure, and a beam reinforcing method for reinforcing a beam having a through hole in a building structure.

従来、建築構造物の梁には配管や配線を通すために貫通孔が形成されることがある。この場合、貫通孔により、梁の曲げ耐力が低下する。この梁の曲げ耐力低下を防ぐため梁に梁補強金具を接合し、梁の補強を行っている。 Conventionally, through holes are sometimes formed in the beams of architectural structures to allow piping and wiring to pass through. In this case, the bending strength of the beam decreases due to the through hole. In order to prevent the bending strength of the beam from decreasing, beam reinforcing metal fittings are attached to the beam to strengthen it.

このような梁補強金具としては、例えば、リング状の部材であって、梁に形成された貫通孔に接合する梁補強金具がある（例えば特許文献１）。 As such a beam reinforcing metal fitting, for example, there is a beam reinforcing metal fitting which is a ring-shaped member and is joined to a through hole formed in a beam (for example, Patent Document 1).

また、建築構造物を構築する際には、柱や梁に取り付けたフックに落下防止ネットを引っ掛けて、作業中に物や作業員が落下するのを防止している（例えば特許文献２）。 Furthermore, when constructing a building structure, fall prevention nets are hung on hooks attached to columns and beams to prevent objects and workers from falling during work (for example, Patent Document 2).

特開２００９－１６７６１５号公報Japanese Patent Application Publication No. 2009-167615 特開２００４－２３２３５１号公報Japanese Patent Application Publication No. 2004-232351

しかし、従来の梁補強金具を用いて梁の補強を行い、前述した落下防止ネットを柱や梁に設けたフックに引っ掛ける場合、現場で柱や梁にフックを取り付けたりネットの使用後にフックを撤去したりするため、作業工程が増える。 However, when reinforcing beams using conventional beam reinforcing metal fittings and hooking the aforementioned fall prevention net onto hooks installed on pillars or beams, the hooks may be attached to the pillars or beams on site or the hooks removed after the net is used. This increases the number of work steps.

本発明は、このような問題に鑑みてなされたもので、梁の補強と同時にネットの取り付け準備が可能な梁補強金具、梁補強構造および梁補強方法を提供することを目的とする。 The present invention has been made in view of the above problems, and an object of the present invention is to provide a beam reinforcing metal fitting, a beam reinforcing structure, and a beam reinforcing method that can prepare for attaching a net at the same time as reinforcing the beam.

前述した目的を達成するため、第１の発明は、ウェブに貫通孔が形成された梁を補強するための梁補強金具を用いた梁補強構造であって、前記梁補強金具は、貫通孔に挿入される筒状の本体部と、前記本体部の一方の端部近傍に形成され、径方向に突出するフランジ部と、を具備し、前記本体部と前記フランジ部との間に、前記本体部よりも外径が大きく、前記フランジ部よりも外径の小さな段部が形成され、前記本体部が、梁のウェブに形成された貫通孔に挿入されて前記梁に溶接され、前記段部によって形成される前記ウェブと前記フランジ部の間の隙間にネットが掛けられていることを特徴とする梁補強構造である。 In order to achieve the above-mentioned object, a first invention provides a beam reinforcement structure using a beam reinforcing metal fitting for reinforcing a beam in which a through hole is formed in a web, the beam reinforcing metal fitting having a through hole formed in the web. A cylindrical main body to be inserted, and a flange formed near one end of the main body and protruding in the radial direction, the main body being inserted between the main body and the flange. A step portion having an outer diameter larger than the flange portion and a smaller outer diameter than the flange portion is formed, and the main body portion is inserted into a through hole formed in the web of the beam and welded to the beam, and the step portion is welded to the beam. The beam reinforcement structure is characterized in that a net is hung over a gap between the web and the flange portion formed by the web.

第１の発明によれば、梁に梁補強金具が溶接され、段部の部分にフランジ部とウェブとの間に隙間を形成することができるため、この隙間にネットを掛けることが可能である。このため、梁補強金具を梁に溶接することによって、梁の補強と同時にネットの取り付け準備を完了することができる。 According to the first invention, the beam reinforcing metal fittings are welded to the beam, and a gap can be formed between the flange part and the web at the step part, so it is possible to hang a net in this gap. . Therefore, by welding the beam reinforcing metal fittings to the beam, preparation for attaching the net can be completed at the same time as reinforcing the beam.

第２の発明は、ウェブに貫通孔が形成された梁を補強するための梁補強金具を用いた梁補強方法であって、前記梁補強金具は、貫通孔に挿入される筒状の本体部と、前記本体部の一方の端部近傍に形成され、径方向に突出するフランジ部と、を具備し、前記本体部と前記フランジ部との間に、前記本体部よりも外径が大きく、前記フランジ部よりも外径の小さな段部が形成され、前記本体部を、梁のウェブに形成された貫通孔に挿入して前記梁に溶接し、前記段部によって形成される前記ウェブと前記フランジ部の間の隙間にネットを掛けることを特徴とする梁補強方法である。 A second invention is a beam reinforcing method using a beam reinforcing metal fitting for reinforcing a beam in which a through hole is formed in a web, wherein the beam reinforcing metal fitting has a cylindrical main body portion inserted into the through hole. and a flange portion formed near one end of the main body portion and protruding in the radial direction, the outer diameter being larger than the main body portion between the main body portion and the flange portion, A step portion having an outer diameter smaller than the flange portion is formed, and the main body portion is inserted into a through hole formed in a web of a beam and welded to the beam, and the web formed by the step portion and the This is a beam reinforcement method characterized by hanging a net in the gap between the flanges.

第２の発明によれば、段部の部分にフランジ部とウェブとの間に隙間を形成することができるため、この隙間にネットを掛けることが可能である。このため、梁補強金具を梁に溶接することによって、梁の補強と同時にネットの取り付け準備を完了することができ、作業が容易である。 According to the second invention, since a gap can be formed between the flange part and the web at the step part, it is possible to hang a net in this gap. Therefore, by welding the beam reinforcing metal fittings to the beam, preparation for attaching the net can be completed at the same time as reinforcing the beam, making the work easy.

本発明によれば、梁の補強と同時にネットの取り付け準備が可能な梁補強金具、梁補強構造および梁補強方法を提供することができる。 According to the present invention, it is possible to provide a beam reinforcing metal fitting, a beam reinforcing structure, and a beam reinforcing method that can prepare for attaching a net at the same time as reinforcing a beam.

梁補強金具１を示す斜視図。FIG. 2 is a perspective view showing a beam reinforcing metal fitting 1; 梁補強金具１を示す側面図。FIG. 2 is a side view showing the beam reinforcing metal fitting 1; 梁補強構造１０を示す斜視図であり、（ａ）は背面側を示す図、（ｂ）は正面側を示す図。It is a perspective view which shows the beam reinforcement structure 10, (a) is a figure which shows the back side, (b) is a figure which shows the front side. 梁補強構造１０を示す正面図。FIG. 3 is a front view showing the beam reinforcement structure 10. （ａ）、（ｂ）、（ｃ）は、図４のＡ－Ａ線断面図。(a), (b), and (c) are cross-sectional views taken along the line AA in FIG. 4. 梁補強金具１ａを示す側面図。FIG. 3 is a side view showing the beam reinforcing metal fitting 1a. 梁補強金具１ａを用いた梁補強構造の部分断面図。FIG. 3 is a partial cross-sectional view of a beam reinforcement structure using beam reinforcement fittings 1a.

（第１の実施形態）
以下、本発明の実施の形態について説明する。図１は、本実施形態にかかる梁補強金具１を示す斜視図であり、図２は側面図である。梁補強金具１は、本体部３、フランジ部５、段部７等から構成される。梁補強金具１は、ウェブに貫通孔が形成された梁を補強するための部材である。 (First embodiment)
Embodiments of the present invention will be described below. FIG. 1 is a perspective view showing a beam reinforcing metal fitting 1 according to this embodiment, and FIG. 2 is a side view. The beam reinforcing metal fitting 1 is composed of a main body portion 3, a flange portion 5, a step portion 7, and the like. The beam reinforcing metal fitting 1 is a member for reinforcing a beam in which a through hole is formed in the web.

梁補強金具１は、例えば鋼材やステンレス鋼などの金属製の部材である。梁補強金具１は、全体としてリング状の部材であり、配管等が貫通する配管孔を有している。本体部３は、後述する梁の貫通孔に挿入される筒状の部位である。本体部３の一方の端部近傍には、フランジ部５が設けられる。フランジ部５は、本体部３に対して外径が大きい部位であり、本体部３の径方向に突出する。 The beam reinforcing metal fitting 1 is a member made of metal such as steel or stainless steel. The beam reinforcing metal fitting 1 is a ring-shaped member as a whole, and has a pipe hole through which a pipe or the like passes. The main body portion 3 is a cylindrical portion inserted into a through hole of a beam, which will be described later. A flange portion 5 is provided near one end of the main body portion 3 . The flange portion 5 is a portion having a larger outer diameter than the main body portion 3 and protrudes in the radial direction of the main body portion 3.

本体部３とフランジ部５との間には、本体部３よりも外径が大きく、フランジ部５よりも外径の小さな段部７が形成される。すなわち、本体部３の一方の端部側において、本体部３、段部７、フランジ部５と、順に外径が大きくなる。なお、本体部３、フランジ部５及び段部７の内径は略同一であり、内周面には凹凸は形成されない。 A stepped portion 7 having a larger outer diameter than the main body portion 3 and a smaller outer diameter than the flange portion 5 is formed between the main body portion 3 and the flange portion 5 . That is, on one end side of the main body part 3, the outer diameters of the main body part 3, the step part 7, and the flange part 5 increase in this order. Note that the inner diameters of the main body portion 3, the flange portion 5, and the step portion 7 are approximately the same, and no unevenness is formed on the inner peripheral surface.

なお、段部７は、図示したように、本体部３の全周に亘って連続して形成されてもよいが、周方向に複数個所に所定の間隔で形成されてもよい。また、段部７の端面（本体部３側から見てリング状の面）は、本体部３の外周面に対して略垂直であることが望ましいが、段部７の外周面とフランジ部５の端面とは、なだらかに接続されていてもよい。例えば、段部７の外周面とフランジ部５の端面とが、円弧状又はテーパ状に接続されていてもよい。 Note that the step portions 7 may be formed continuously over the entire circumference of the main body portion 3 as illustrated, but may also be formed at a plurality of locations at predetermined intervals in the circumferential direction. Furthermore, it is desirable that the end surface (ring-shaped surface when viewed from the main body 3 side) of the stepped portion 7 is approximately perpendicular to the outer circumferential surface of the main body 3, but the outer circumferential surface of the stepped portion 7 and the flange may be smoothly connected to the end face of the . For example, the outer peripheral surface of the stepped portion 7 and the end surface of the flange portion 5 may be connected in an arc shape or a tapered shape.

次に、梁補強金具１を用いた梁補強構造１０について説明する。図３（ａ）は、梁補強構造１０をウェブ１５の背面１５ｂ側から見た斜視図であり、図３（ｂ）は、梁補強構造１０をウェブ１５の正面１５ａ側から見た斜視図である。また、図４は、梁補強構造１０の正面図である。 Next, a beam reinforcement structure 10 using the beam reinforcement fittings 1 will be explained. 3(a) is a perspective view of the beam reinforcement structure 10 seen from the back side 15b of the web 15, and FIG. 3(b) is a perspective view of the beam reinforcement structure 10 seen from the front side 15a of the web 15. be. Moreover, FIG. 4 is a front view of the beam reinforcement structure 10.

梁１１は、ウェブ１５の上下にフランジ１３を有するＨ鋼である。ウェブ１５には、配管等を通すための貫通孔１７が形成される。梁補強金具１は貫通孔１７に配置される。前述したように、貫通孔１７には、梁補強金具１の本体部３が挿入される。段部７は、貫通孔１７の縁部近傍のウェブ１５に面接触する。これにより、貫通孔１７の縁にバリ等がある場合にも、梁補強金具１で隠すことができる。また、段部７は、ウェブ１５とフランジ部５との間に隙間７ａを形成可能なスペーサとして機能する。 The beam 11 is made of H steel having flanges 13 above and below the web 15. A through hole 17 is formed in the web 15 for passing piping and the like. The beam reinforcing metal fitting 1 is arranged in the through hole 17. As described above, the main body portion 3 of the beam reinforcing metal fitting 1 is inserted into the through hole 17. The stepped portion 7 makes surface contact with the web 15 near the edge of the through hole 17 . Thereby, even if there is a burr or the like on the edge of the through hole 17, it can be hidden by the beam reinforcing metal fitting 1. Furthermore, the stepped portion 7 functions as a spacer that can form a gap 7a between the web 15 and the flange portion 5.

梁補強金具１は、ウェブ１５に対して溶接によって接合される。図５（ａ）は、図４のＡ－Ａ線部分断面図である。なお、図５（ａ）において、背面１５ｂ側のネット等の図示を省略する。本実施形態では、本体部３の外周部が、ウェブ１５に対して全周にわたって溶接される。すなわち、溶接部１９は、本体部３の外周部とウェブ１５の背面１５ｂとの間に形成される。 The beam reinforcing metal fitting 1 is joined to the web 15 by welding. FIG. 5(a) is a partial cross-sectional view taken along line AA in FIG. In addition, in FIG. 5(a), illustration of the net etc. on the back surface 15b side is omitted. In this embodiment, the outer peripheral portion of the main body portion 3 is welded to the web 15 over the entire circumference. That is, the welded portion 19 is formed between the outer peripheral portion of the main body portion 3 and the back surface 15b of the web 15.

梁補強構造１０では、ウェブ１５の正面１５ａにおいて、梁補強金具１のフランジ部５とウェブ１５との間の段部７の部位に形成された隙間７ａに落下防止用のネット９が掛けられる。また、梁１１はウェブ１５の背面１５ｂ側にフック８が設けられ、フック８にも落下防止用のネット９が掛けられる（図３（ａ）参照）。段部７（隙間７ａ）に掛けられたネット９及びフック８に掛けられたネット９は、それぞれ梁１１の下側のフランジ１３の縁部を覆うように配置され、作業中に梁１１の側方に物や作業員が落下するのを防止する。 In the beam reinforcement structure 10, a fall prevention net 9 is hung in a gap 7a formed at the step portion 7 between the flange portion 5 of the beam reinforcement fitting 1 and the web 15 on the front surface 15a of the web 15. Further, the beam 11 is provided with a hook 8 on the back surface 15b side of the web 15, and a net 9 for fall prevention is also hung on the hook 8 (see FIG. 3(a)). The net 9 hung on the step part 7 (gap 7a) and the net 9 hung on the hook 8 are respectively placed so as to cover the edge of the flange 13 on the lower side of the beam 11, and are placed on the side of the beam 11 during work. Prevent objects and workers from falling in the opposite direction.

なお、図５（ｂ）に示すように、段部７の外周部を、ウェブ１５に対し溶接してもよい。すなわち、溶接部１９は、段部７の外周部とウェブ１５の正面１５ａとの間に形成される。また、段部７の外周部を溶接する場合には、図５（ｃ）に示すように、フランジ部５の内面側をテーパ形状にしてもよい。すなわち、フランジ部５は、段部７から前端面に向かって徐々に拡径するようにテーパ形状としてもよい。このようにすると、溶接がやりやすい。さらに、溶接部１９は、梁補強金具１の両側に形成してもよい。なお、段部７側を溶接する場合には、段部７とフランジ部５との外径差よりも溶接部１９の高さを低くし、フランジ部５とウェブ１５との間に隙間７ａが残るようにする。すなわち、溶接部１９は、フランジ部５よりも外方にはみ出さず、フランジ部５とウェブ１５との隙間７ａが埋まらないように溶接する必要がある。 Note that, as shown in FIG. 5(b), the outer peripheral portion of the stepped portion 7 may be welded to the web 15. That is, the welded portion 19 is formed between the outer peripheral portion of the stepped portion 7 and the front surface 15a of the web 15. Moreover, when welding the outer peripheral part of the step part 7, as shown in FIG.5(c), the inner surface side of the flange part 5 may be made into a taper shape. That is, the flange portion 5 may have a tapered shape so that the diameter gradually increases from the step portion 7 toward the front end surface. This makes welding easier. Furthermore, the welded portions 19 may be formed on both sides of the beam reinforcing metal fitting 1. In addition, when welding the stepped portion 7 side, the height of the welded portion 19 is made lower than the outer diameter difference between the stepped portion 7 and the flange portion 5, and a gap 7a is created between the flange portion 5 and the web 15. Let it remain. That is, the welded portion 19 needs to be welded so that it does not protrude outward beyond the flange portion 5 and does not fill the gap 7a between the flange portion 5 and the web 15.

次に、梁補強金具１を用いた梁補強方法（梁補強構造１０の施工方法）について説明する。まず、梁１１をウェブ１５の正面１５ａ側が上向きになるように作業ヤードに仮置きし、梁補強金具１の本体部３を、梁１１のウェブ１５の正面１５ａ側から貫通孔１７に挿入する。この際、梁補強金具１の段部７は、梁１１に設けられた貫通孔１７よりも大きな外径を有している。また、本体部３は、梁１１に設けられた貫通孔１７の径よりも小さい外径を有している。このため、本体部３を貫通孔１７に挿入すると、段部７をウェブ１５に接触させることができる。すなわち、段部７は梁補強金具１を貫通孔１７に挿入する際、軸方向の位置決めに使われる。 Next, a beam reinforcing method (construction method of the beam reinforcing structure 10) using the beam reinforcing metal fitting 1 will be explained. First, the beam 11 is temporarily placed in a work yard with the front 15a side of the web 15 facing upward, and the main body 3 of the beam reinforcing metal fitting 1 is inserted into the through hole 17 from the front 15a side of the web 15 of the beam 11. At this time, the step portion 7 of the beam reinforcing metal fitting 1 has a larger outer diameter than the through hole 17 provided in the beam 11. Further, the main body portion 3 has an outer diameter smaller than the diameter of the through hole 17 provided in the beam 11. Therefore, when the main body portion 3 is inserted into the through hole 17, the stepped portion 7 can be brought into contact with the web 15. That is, the stepped portion 7 is used for axial positioning when the beam reinforcing metal fitting 1 is inserted into the through hole 17.

梁補強金具１の位置が決まったら、必要に応じて梁補強金具１を仮固定し、ウェブ１５の背面１５ｂ側から本体部３の外周部とウェブ１５の背面１５ｂとの間に溶接部１９を形成して、梁補強金具１をウェブ１５に固定する。なお、溶接部１９は、ウェブ１５の正面１５ａ側であってもよく、背面１５ｂ側であってもよい。溶接は例えば被覆アーク溶接で行われる。 Once the position of the beam reinforcing metal fitting 1 is determined, the beam reinforcing metal fitting 1 is temporarily fixed as necessary, and the welded part 19 is inserted between the outer circumference of the main body part 3 and the back side 15b of the web 15 from the back side 15b of the web 15. The beam reinforcing metal fitting 1 is fixed to the web 15 by forming the beam reinforcing metal fitting 1. Note that the welded portion 19 may be on the front 15a side of the web 15, or may be on the back side 15b. Welding is performed, for example, by shielded arc welding.

梁補強金具１を梁１１に溶接したら、梁１１を現場に設置する。すなわち図示しない柱との接合部に梁１１を接合する。そして、梁補強金具１に形成された段部７において形成される、フランジ部５とウェブ１５との間の隙間７ａに落下防止用のネット９を掛ける。また、ウェブ１５の背面１５ｂ側に取り付けられたフック８にもネット９を掛ける。フック８はウェブ１５の背面１５ｂにあらかじめ取り付けておいてもよいし、現場で取り付けてもよい。 After welding the beam reinforcing metal fittings 1 to the beam 11, the beam 11 is installed at the site. That is, the beam 11 is joined to a joint with a pillar (not shown). Then, a fall prevention net 9 is hung in the gap 7a between the flange portion 5 and the web 15, which is formed in the step portion 7 formed on the beam reinforcing metal fitting 1. A net 9 is also hung on a hook 8 attached to the back side 15b of the web 15. The hook 8 may be attached to the back surface 15b of the web 15 in advance or may be attached on site.

以上により、梁補強構造１０を得ることができる。梁補強金具１によって、梁１１の貫通孔１７の近傍における曲げ耐力を向上させることができる。 Through the above steps, the beam reinforcement structure 10 can be obtained. The beam reinforcing metal fitting 1 can improve the bending strength in the vicinity of the through hole 17 of the beam 11.

以上、本実施の形態によれば、梁補強金具１に段部７とフランジ部５が形成されているので、梁補強金具１を梁１１に固定した際に、落下防止用のネット９を掛けることが可能である。このため、梁補強金具１を梁１１に溶接することにより梁１１の補強と同時にネット９の取り付け準備を完了することができる。また、現場に梁１１を設置したらすぐに段部７（隙間７ａ）にネット９を掛けて落下防止対策を行うことができる。 As described above, according to the present embodiment, since the step part 7 and the flange part 5 are formed in the beam reinforcing metal fitting 1, when the beam reinforcing metal fitting 1 is fixed to the beam 11, the net 9 for preventing falling is hung. Is possible. Therefore, by welding the beam reinforcing metal fittings 1 to the beam 11, preparation for attaching the net 9 can be completed at the same time as reinforcing the beam 11. Further, as soon as the beam 11 is installed at the site, a net 9 can be hung over the stepped portion 7 (gap 7a) to prevent the beam from falling.

（第２の実施形態）
次に、第２の実施形態について説明する。図６は、梁補強金具１ａの側面図であり、図７は梁補強金具１ａを用いた梁補強構造の部分断面図である。なお、以下の説明において、梁補強金具１及び梁補強構造１０と同様の機能を奏する構成には、図１～図５と同一の符号を付して、重複する説明を省略する。 (Second embodiment)
Next, a second embodiment will be described. FIG. 6 is a side view of the beam reinforcing metal fitting 1a, and FIG. 7 is a partial sectional view of a beam reinforcing structure using the beam reinforcing metal fitting 1a. In the following description, components that have the same functions as the beam reinforcing metal fitting 1 and the beam reinforcing structure 10 are designated by the same reference numerals as in FIGS. 1 to 5, and redundant explanation will be omitted.

梁補強金具１ａは、本体部３の外周部に溝６が形成される点で梁補強金具１と構成が異なる。梁補強金具１ａは、本体部３のフランジ部５等が形成される端部側とは逆側の端部近傍において、外周面に周方向に溝６が形成される。 The beam reinforcing metal fitting 1a differs in structure from the beam reinforcing metal fitting 1 in that a groove 6 is formed in the outer peripheral portion of the main body portion 3. A groove 6 is formed in the outer peripheral surface of the beam reinforcing metal fitting 1a in the circumferential direction near the end opposite to the end where the flange 5 and the like of the main body 3 are formed.

梁補強金具１ａを梁１１に固定すると、梁１１の背面１５ｂ側には、本体部３の先端部の一部がウェブ１５から突出する。溝６は、本体部３のウェブ１５からの突出部に形成される。すなわち、溝６は、本体部３の端面から所定距離離れて形成され、ウェブ１５の背面１５ｂ側において、溝６が、ウェブ１５に隠れない範囲に形成される。なお、溶接部１９は、ウェブ１５の正面１５ａ側であってもよく、背面１５ｂ側であってもよい。 When the beam reinforcing metal fitting 1a is fixed to the beam 11, a part of the tip of the main body 3 protrudes from the web 15 on the back surface 15b side of the beam 11. The groove 6 is formed in the protrusion of the body portion 3 from the web 15 . That is, the groove 6 is formed at a predetermined distance from the end surface of the main body portion 3, and is formed in a range where the groove 6 is not hidden by the web 15 on the back surface 15b side of the web 15. Note that the welded portion 19 may be on the front 15a side of the web 15, or may be on the back side 15b.

梁補強金具１ａを用いることで、いずれの端面側においても、隙間７ａと溝６にネット９を掛けることができる。このため、図３（ａ）に示す梁１１のウェブ１５の背面１５ｂ側においても梁補強金具１ａにネット９が掛けられる。したがって、フック８の使用量を削減し、作業を短縮することができる。 By using the beam reinforcing metal fittings 1a, the net 9 can be hung over the gap 7a and the groove 6 on either end surface side. Therefore, the net 9 is also hung on the beam reinforcing metal fitting 1a on the back surface 15b side of the web 15 of the beam 11 shown in FIG. 3(a). Therefore, the amount of hooks 8 used can be reduced, and the work can be shortened.

第２の実施形態によれば、第１の実施形態と同様の効果を得ることができる。また、梁補強金具１ａのように、本体部３の端部近傍（フランジ部５が設けられない側の端部近傍）の外周面に溝６を形成することで、梁の補強と同時にウェブ１５の背面１５ｂ側においてもネット９の取り付け準備を完了することができる。 According to the second embodiment, effects similar to those of the first embodiment can be obtained. Also, like the beam reinforcing metal fitting 1a, by forming the groove 6 on the outer peripheral surface near the end of the main body 3 (near the end on the side where the flange part 5 is not provided), the web 15 can be reinforced at the same time as the beam reinforcement. Preparations for attaching the net 9 can also be completed on the rear surface 15b side.

以上、添付図を参照しながら、本発明の実施の形態を説明したが、本発明の技術的範囲は、前述した実施の形態に左右されない。当業者であれば、特許請求の範囲に記載された技術的思想の範疇内において各種の変更例または修正例に想到し得ることは明らかであり、それらについても当然に本発明の技術的範囲に属するものと了解される。 Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the technical scope of the present invention is not limited to the embodiments described above. It is clear that those skilled in the art can come up with various changes and modifications within the scope of the technical idea stated in the claims, and these naturally fall within the technical scope of the present invention. It is understood that it belongs.

また、梁補強金具の本体部３は円筒状に限らない。例えば貫通孔が角形である場合、角筒状の本体部の端部に段部とフランジ部が形成された梁補強金具を用いてもよい。 Further, the main body 3 of the beam reinforcing metal fitting is not limited to a cylindrical shape. For example, if the through hole is square, a beam reinforcing metal fitting may be used in which a step and a flange are formed at the end of a square tubular main body.

１、１ａ………梁補強金具
３………本体部
５………フランジ部
６………溝
７………段部
７ａ………隙間
８………フック
９………ネット
１０………梁補強構造
１１………梁
１３………フランジ
１５………ウェブ
１５ａ………正面
１５ｂ………背面
１７………貫通孔
１９………溶接部 1, 1a...Beam reinforcing metal fitting 3...Body part 5...Flange part 6...Groove 7...Step part 7a...Gap 8...Hook 9...Net 10... ...Beam reinforcement structure 11...Beam 13...Flange 15...Web 15a...Front 15b...Back 17...Through hole 19...Welding part

Claims (2)

ウェブに貫通孔が形成された梁を補強するための梁補強金具を用いた梁補強構造であって、
前記梁補強金具は、
貫通孔に挿入される筒状の本体部と、
前記本体部の一方の端部近傍に形成され、径方向に突出するフランジ部と、
を具備し、
前記本体部と前記フランジ部との間に、前記本体部よりも外径が大きく、前記フランジ部よりも外径の小さな段部が形成され、
前記本体部が、梁のウェブに形成された貫通孔に挿入されて前記梁に溶接され、
前記段部によって形成される前記ウェブと前記フランジ部の間の隙間にネットが掛けられていることを特徴とする梁補強構造。 A beam reinforcement structure using beam reinforcement fittings for reinforcing a beam in which a through hole is formed in the web,
The beam reinforcing metal fittings are
a cylindrical main body portion inserted into the through hole;
a flange portion formed near one end of the main body portion and protruding in the radial direction;
Equipped with
A stepped portion having a larger outer diameter than the main body portion and a smaller outer diameter than the flange portion is formed between the main body portion and the flange portion,
The main body portion is inserted into a through hole formed in a web of a beam and welded to the beam,
A beam reinforcement structure characterized in that a net is hung over a gap between the web and the flange formed by the step. ウェブに貫通孔が形成された梁を補強するための梁補強金具を用いた梁補強方法であって、
前記梁補強金具は、
貫通孔に挿入される筒状の本体部と、
前記本体部の一方の端部近傍に形成され、径方向に突出するフランジ部と、
を具備し、
前記本体部と前記フランジ部との間に、前記本体部よりも外径が大きく、前記フランジ部よりも外径の小さな段部が形成され、
前記本体部を、梁のウェブに形成された貫通孔に挿入して前記梁に溶接し、
前記段部によって形成される前記ウェブと前記フランジ部の間の隙間にネットを掛けることを特徴とする梁補強方法。 A beam reinforcement method using a beam reinforcement fitting for reinforcing a beam in which a through hole is formed in the web, the method comprising:
The beam reinforcing metal fittings are
a cylindrical main body portion inserted into the through hole;
a flange portion formed near one end of the main body portion and protruding in the radial direction;
Equipped with
A stepped portion having a larger outer diameter than the main body portion and a smaller outer diameter than the flange portion is formed between the main body portion and the flange portion,
The main body portion is inserted into a through hole formed in a web of a beam and welded to the beam,
A method for reinforcing a beam, comprising placing a net over a gap between the web and the flange formed by the step.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007162244A (en) 2005-12-09 2007-06-28 Okabe Co Ltd Member and structure for reinforcing through-hole of steel beam
JP2015200085A (en) 2014-04-07 2015-11-12 片山ストラテック株式会社 Beam through-hole reinforcement ring
JP2016211252A (en) 2015-05-11 2016-12-15 株式会社伊藤製作所 Net stretching tool
JP2018131824A (en) 2017-02-16 2018-08-23 日本ファブテック株式会社 Strengthening ring for through hole of beam

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007162244A (en) 2005-12-09 2007-06-28 Okabe Co Ltd Member and structure for reinforcing through-hole of steel beam
JP2015200085A (en) 2014-04-07 2015-11-12 片山ストラテック株式会社 Beam through-hole reinforcement ring
JP2016211252A (en) 2015-05-11 2016-12-15 株式会社伊藤製作所 Net stretching tool
JP2018131824A (en) 2017-02-16 2018-08-23 日本ファブテック株式会社 Strengthening ring for through hole of beam

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