JP7246214B2 - Beam reinforcement brackets and beam reinforcement structures - Google Patents
Beam reinforcement brackets and beam reinforcement structures Download PDFInfo
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- JP7246214B2 JP7246214B2 JP2019048692A JP2019048692A JP7246214B2 JP 7246214 B2 JP7246214 B2 JP 7246214B2 JP 2019048692 A JP2019048692 A JP 2019048692A JP 2019048692 A JP2019048692 A JP 2019048692A JP 7246214 B2 JP7246214 B2 JP 7246214B2
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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および梁補強構造に関するものである。 TECHNICAL FIELD The present invention relates to a beam reinforcing metal fitting and a beam reinforcing structure for reinforcing a beam having through-holes 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 beams of building structures for the passage of pipes and wiring. In this case, the through holes reduce the bending resistance of the beam. In order to prevent this deterioration of the bending strength of the beams, beam reinforcing metal fittings are attached to the beams to reinforce the beams.
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、２）。 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 Documents 1 and 2).
従来のリング状の梁補強金具では、貫通孔への挿入部（本体部）をテーパ形状とすることがある。挿入部をテーパ形状とする場合、挿入部とその一方の側に設けたフランジ部とで梁補強金具を構成したり、フランジを設けず挿入部のみで梁補強金具を構成したりする。このうち後者の梁補強金具では、貫通孔に固定する際に挿入部の外周面を貫通孔の縁部に接触させて位置決めを行う。そのため、貫通孔の軸方向に対して挿入部の軸方向が傾いた状態で梁補強金具の位置決めが成されて貫通孔に溶接される可能性がある。 In a conventional ring-shaped beam reinforcing metal fitting, the insertion portion (body portion) into the through-hole may be tapered. When the insert portion is tapered, the beam reinforcing metal fitting is composed of the insert portion and a flange portion provided on one side thereof, or the beam reinforcing metal fitting is composed only of the insert portion without providing the flange. Of these, the latter beam reinforcing metal fitting is positioned by bringing the outer peripheral surface of the insertion portion into contact with the edge of the through-hole when fixing it to the through-hole. Therefore, there is a possibility that the beam reinforcing metal fitting is positioned and welded to the through hole in a state in which the axial direction of the insertion portion is inclined with respect to the axial direction of the through hole.
本発明は、このような問題に鑑みてなされたもので、梁に設けられた貫通孔に傾きなく溶接できる梁補強金具および梁補強構造を提供することを目的とする。 SUMMARY OF THE INVENTION It is an object of the present invention to provide a beam reinforcing metal fitting and a beam reinforcing structure that can be welded to a through hole provided in a beam without tilting.
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であって、フランジ部と、前記フランジ部の一方の側に突出して前記貫通孔に挿入される筒状の本体部と、を具備し、前記フランジ部は、前記本体部に向かって外径が縮径するテーパ形状を有し、前記本体部は外径が一定であることを特徴とする梁補強金具である。 In order to achieve the above object, a first invention is a beam reinforcing fitting for reinforcing a beam having through holes formed in a web, comprising: a flange portion; a cylindrical main body portion to be inserted into the through hole, wherein the flange portion has a tapered shape in which the outer diameter decreases toward the main body portion, and the main body portion has a constant outer diameter. It is a beam reinforcing metal fitting characterized by the following.
第１の発明の梁補強金具は、フランジ部が本体部に向かって外径が縮径するテーパ形状を有するので、径が本体部の外径より大きくフランジ部の外径の最大部より小さい複数のサイズの貫通孔に適用可能である。 In the beam reinforcing bracket of the first invention, the flange portion has a tapered shape in which the outer diameter decreases toward the main body portion. is applicable to through-holes of the size of
第２の発明は、第１の発明の梁補強金具を用いた梁補強構造であって、前記フランジ部のテーパ形状の外径が最小となる位置付近が前記貫通孔の縁部と接触した状態で、前記フランジ部が前記ウェブに溶接され、前記本体部は、前記ウェブの背面側に突出し、前記フランジ部のテーパ形状の外周面と前記ウェブの正面との間に溶接部が形成されることを特徴とする梁補強構造である。
第３の発明は、第１の発明の梁補強金具を用いた梁補強構造であって、前記フランジ部のテーパ形状の外径が最小となる位置付近が前記貫通孔の縁部と接触した状態で、前記フランジ部が前記ウェブに溶接され、前記本体部は、前記ウェブの背面側に突出し、前記本体部の外周面と前記ウェブの背面との間に溶接部が形成されることを特徴とする梁補強構造である。
A second invention is a beam reinforcing structure using the beam reinforcing metal fitting of the first invention, wherein the vicinity of the position where the outer diameter of the tapered shape of the flange portion is the smallest is in contact with the edge of the through hole. wherein the flange portion is welded to the web, the main body portion protrudes to the rear side of the web, and a weld portion is formed between the tapered outer peripheral surface of the flange portion and the front surface of the web. It is a beam reinforcement structure characterized by
A third invention is a beam reinforcing structure using the beam reinforcing metal fitting of the first invention, wherein the vicinity of the position where the outer diameter of the tapered shape of the flange portion is the smallest is in contact with the edge of the through hole. wherein the flange portion is welded to the web, the body portion protrudes to the back side of the web, and a welded portion is formed between the outer peripheral surface of the body portion and the back side of the web. It is a beam reinforcement structure that
第２、第３の発明によれば、本体部がウェブの背面側に突出するので、背面側から本体部を目視して貫通孔の軸方向に対する本体部の軸方向の傾きを確認することができる。また、必要に応じて本体部を工具や手で掴んで傾きを修正することができる。さらに、フランジ部のテーパ形状が貫通孔の縁部と接触した状態でフランジ部がウェブに溶接されるので、ウェブとテーパ形状との間を開先として溶接部を形成することができる。また、本体部とウェブ背面との間に溶接部を形成することができる。
According to the second and third inventions, since the main body protrudes toward the back side of the web, it is possible to confirm the inclination of the main body in the axial direction with respect to the axial direction of the through-hole by viewing the main body from the back side. can. Also, if necessary, the tilt can be corrected by gripping the main body with a tool or by hand. Furthermore, since the flange portion is welded to the web while the tapered shape of the flange portion is in contact with the edge portion of the through hole, the welded portion can be formed using the groove between the web and the tapered shape. Also, a weld can be formed between the main body and the back surface of the web.
本発明によれば、梁に設けられた貫通孔に傾きなく溶接できる梁補強金具および梁補強構造を提供することができる。 ADVANTAGE OF THE INVENTION According to this invention, the beam reinforcement metal fitting and beam reinforcement structure which can be welded to the through-hole provided in the beam without inclination can be provided.
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を示す斜視図である。梁補強金具１は、本体部３、フランジ部５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。 BEST MODE FOR CARRYING OUT THE INVENTION 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. The beam reinforcing metal fitting 1 is composed of a body portion 3, a flange portion 5, and the like. A beam reinforcing metal fitting 1 is a member for reinforcing a beam having through holes formed in a 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、フランジ部５の一方の側に突出して設けられる。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。 The beam reinforcing metal fitting 1 is, for example, 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 piping hole through which piping or the like passes. The body portion 3 is provided so as to protrude from one side of the flange portion 5 . The body portion 3 is a cylindrical portion that is inserted into a through hole of a beam, which will be described later.
本体部３は、外径が一定である。フランジ部５は、本体部３に向かって外径が縮径するテーパ形状を有する。すなわち、フランジ部５は、本体部３との境界部では本体部３と同等の外径を有し、本体部３からの距離が大きくなるにつれて外径が大きくなる。 The body portion 3 has a constant outer diameter. The flange portion 5 has a tapered shape in which the outer diameter decreases toward the body portion 3 . That is, the flange portion 5 has the same outer diameter as the main body portion 3 at the boundary portion with the main body portion 3, and the outer diameter increases as the distance from the main body portion 3 increases.
なお、本体部３及びフランジ部５の内径は略同一であり、内周面には凹凸は形成されない。 The inner diameters of the main body portion 3 and the flange portion 5 are substantially the same, and unevenness is not formed on the inner peripheral surface.
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２（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２（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３は、梁補強構造１０の正面図であり、図４は、図３のＡ－Ａ線断面図である。 Next, the beam reinforcing structure 10 using the beam reinforcing metal fittings 1 will be described. 2(a) is a perspective view of the beam reinforcing structure 10 viewed from the rear surface 15b side of the web 15, and FIG. 2(b) is a perspective view of the beam reinforcing structure 10 viewed from the front surface 15a side of the web 15. be. 3 is a front view of the beam reinforcing structure 10, and FIG. 4 is a sectional view taken along the line AA of FIG.
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。本体部３のフランジ部５が設けられない側の端部は、ウェブ１５の背面１５ｂ側に突出する。貫通孔１７の径は、フランジ部５の外径の最小部より大きく且つ最大部より小さい。そのため、フランジ部５は、テーパ形状の外周部が貫通孔１７の縁部のウェブ１５に接触する。これにより、貫通孔１７の正面１５ａ側の縁のバリ等をフランジ部５で隠し、背面１５ｂ側の縁のバリ等を本体部３で隠すことができる。 The beam 11 is H steel with flanges 13 above and below the web 15 . The web 15 is formed with a through hole 17 for passing a pipe or the like. The beam reinforcing metal fitting 1 is arranged in the through hole 17 . As described above, the body portion 3 of the beam reinforcing metal fitting 1 is inserted into the through hole 17 . The end portion of the main body portion 3 on the side where the flange portion 5 is not provided protrudes toward the rear surface 15 b of the web 15 . The diameter of the through hole 17 is larger than the minimum portion of the outer diameter of the flange portion 5 and smaller than the maximum portion thereof. Therefore, the tapered outer periphery of the flange portion 5 contacts the web 15 at the edge of the through hole 17 . As a result, burrs and the like on the edge of the through hole 17 on the front face 15a side can be hidden by the flange portion 5, and burrs and the like on the edge on the back face 15b side can be hidden by the body portion 3.
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。本実施形態では、フランジ部５のテーパ形状の外周面が、ウェブ１５に対して全周にわたって溶接される。 The beam reinforcing metal fitting 1 is joined to the web 15 by welding. In this embodiment, the tapered outer peripheral surface of the flange portion 5 is welded to the web 15 over the entire circumference.
ここで、図４（ａ）に示す例では、貫通孔１７の径がフランジ部５の外径の最小部よりもやや大きい。この場合、貫通孔１７の縁部が、フランジ部５のテーパ形状の外径が最小となる位置付近に接触する。溶接部１９は、フランジ部５のテーパ形状の外周面とウェブ１５の正面１５ａとの間に形成される。 Here, in the example shown in FIG. 4( a ), the diameter of the through hole 17 is slightly larger than the minimum portion of the outer diameter of the flange portion 5 . In this case, the edge of the through-hole 17 contacts the vicinity of the position where the outer diameter of the tapered shape of the flange portion 5 is the smallest. The welded portion 19 is formed between the tapered outer peripheral surface of the flange portion 5 and the front surface 15 a of the web 15 .
図４（ｂ）に示す例では、貫通孔１７の径がフランジ部５の外径の最小部よりも最大部に近い大きさである。この場合、貫通孔１７の縁部が、フランジ部５のテーパ形状の外径が最大となる位置付近に接触する。溶接部１９は、フランジ部５のテーパ形状の外周面とウェブ１５に設けられた貫通孔１７の内周面２１との間に形成される。 In the example shown in FIG. 4B, the diameter of the through hole 17 is closer to the maximum outer diameter than the minimum outer diameter of the flange portion 5 . In this case, the edge of the through-hole 17 contacts the vicinity of the position where the outer diameter of the tapered shape of the flange portion 5 is maximized. The welded portion 19 is formed between the tapered outer peripheral surface of the flange portion 5 and the inner peripheral surface 21 of the through hole 17 provided in 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。図４（ａ）に示す例では、まず梁補強金具１の本体部３を、梁１１のウェブ１５の正面１５ａ側から、ウェブ１５に設けられた貫通孔１７に挿入する。この際、梁補強金具１のフランジ部５のテーパ形状の外径の最大部は、貫通孔１７の径よりも大きい。また、本体部３は、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、フランジ部５のテーパ形状の外周面を貫通孔１７の縁部に接触させることができる。すなわち、フランジ部５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 reinforcement method using the beam reinforcement fitting 1 (construction method of the beam reinforcement structure 10) will be described. In the example shown in FIG. 4( a ), first, the body portion 3 of the beam reinforcing metal fitting 1 is inserted into the through hole 17 provided in the web 15 of the beam 11 from the front surface 15 a side of the web 15 . At this time, the maximum portion of the tapered outer diameter of the flange portion 5 of the beam reinforcing metal fitting 1 is larger than the diameter of the through hole 17 . Further, the body portion 3 has an outer diameter smaller than the diameter of the through hole 17 . Therefore, when the body portion 3 is inserted into the through hole 17 , the tapered outer peripheral surface of the flange portion 5 can be brought into contact with the edge portion of the through hole 17 . That is, the flange portion 5 is used for axial positioning when inserting the beam reinforcing metal fitting 1 into the through hole 17 .
フランジ部５のテーパ形状を貫通孔１７の縁部に接触させる際、作業者は、梁補強金具１の本体部３をウェブ１５の背面１５ｂ側から見て、本体部３が水平かどうか、すなわち貫通孔１７の軸方向と本体部３の軸方向とが一致しているかどうかを確認する。本体部３はウェブ１５の背面１５ｂ側に突出しているため、作業者は本体部３の状態を確認しやすい。本体部３が傾いている場合は、ウェブ１５の背面１５ｂ側から本体部３を手または工具で掴むことで、傾きを容易に修正して位置決めを行うことができる。 When bringing the tapered shape of the flange portion 5 into contact with the edge of the through-hole 17, the operator checks whether the body portion 3 of the beam reinforcing metal fitting 1 is horizontal when viewed from the back surface 15b side of the web 15. It is confirmed whether or not the axial direction of the through hole 17 and the axial direction of the main body portion 3 match. Since the body portion 3 protrudes toward the back surface 15b of the web 15, the operator can easily check the state of the body portion 3. If the body portion 3 is tilted, the tilt can be easily corrected and positioned by gripping the body portion 3 from the back surface 15b side of the web 15 with a hand or a tool.
梁補強金具１の位置が決まったら、ウェブ１５の正面１５ａ側からフランジ部５のテーパ形状の外周面とウェブ１５の正面１５ａ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。溶接は例えば被覆アーク溶接で行われる。 After the position of the beam reinforcing metal fitting 1 is determined, a welded portion 19 is formed between the tapered outer peripheral surface of the flange portion 5 and the front face 15a of the web 15 from the side of the front face 15a of the web 15, and the beam reinforcing metal fitting 1 is attached to the web. Fixed to 15. Welding is performed, for example, by shielded arc welding.
図４（ｂ）に示す例では、梁補強金具１の位置が決まったら、ウェブ１５の背面１５ｂ側からフランジ部５のテーパ形状の外周面とウェブ１５に設けられた貫通孔１７の内周面２１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。 In the example shown in FIG. 4(b), when the position of the beam reinforcing metal fitting 1 is determined, the taper-shaped outer peripheral surface of the flange portion 5 and the inner peripheral surface of the through hole 17 provided in the web 15 are removed from the back surface 15b side of the web 15. 21 to fix the beam reinforcing metal fitting 1 to the web 15.
なお、図４（ａ）に示す例では、フランジ部５のテーパ形状の外周面とウェブ１５の正面１５ａとの間に溶接部１９を形成したが、溶接部１９の形成位置はこれに限らない。 In the example shown in FIG. 4A, the welded portion 19 is formed between the tapered outer peripheral surface of the flange portion 5 and the front surface 15a of the web 15, but the position where the welded portion 19 is formed is not limited to this. .
図５は、溶接部１９の形成位置が異なる例を示す図である。図５（ａ）に示すように、本体部３の外周面とウェブ１５の背面１５ｂとの間に溶接部１９を形成してもよい。また、図５（ｂ）に示すように、フランジ部５のテーパ形状の外周面とウェブ１５の正面１５ａとの間と、本体部３の外周面とウェブ１５の背面１５ｂとの間の２ケ所に溶接部１９を形成してもよい。 FIG. 5 is a diagram showing an example in which the welding part 19 is formed at different positions. As shown in FIG. 5( a ), a welded portion 19 may be formed between the outer peripheral surface of the body portion 3 and the back surface 15 b of the web 15 . Moreover, as shown in FIG. 5(b), there are two locations between the tapered outer peripheral surface of the flange portion 5 and the front surface 15a of the web 15 and between the outer peripheral surface of the body portion 3 and the rear surface 15b of the web 15. You may form the welding part 19 in.
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。 As described above, the beam reinforcing structure 10 can be obtained. The beam reinforcing metal fitting 1 can improve the bending strength of the beam 11 in the vicinity of the through hole 17 .
以上、本実施の形態の梁補強金具１は、フランジ部５が本体部３に向かって外径が縮径するテーパ形状を有するので、径が本体部３の外径より大きくフランジ部５の外径の最大部より小さい複数のサイズの貫通孔１７に適用可能である。 As described above, in the beam reinforcing metal fitting 1 of the present embodiment, the flange portion 5 has a tapered shape in which the outer diameter decreases toward the main body portion 3 . It is applicable to through-holes 17 having a plurality of sizes smaller than the maximum diameter.
また、梁補強構造１０では、本体部３がウェブ１５の背面１５ｂ側に突出するので、背面１５ｂ側から本体部３を目視して本体部３の傾き具合を確認し、必要に応じて本体部３の傾きを修正してからフランジ部５をウェブ１５に溶接することができる。また、フランジ部５のテーパ形状の外周部が貫通孔１７の縁部と接触するので、フランジ部５のテーパ形状の外周部とウェブ１５との間を開先として溶接部１９を形成することができる。 In addition, in the beam reinforcing structure 10, since the main body 3 protrudes toward the back surface 15b of the web 15, the inclination of the main body 3 is confirmed by visually observing the main body 3 from the back surface 15b side, and if necessary, the main body 3 is tilted. 3 can be corrected before flange 5 can be welded to web 15 . In addition, since the tapered outer peripheral portion of the flange portion 5 contacts the edge portion of the through hole 17, the welded portion 19 can be formed as a groove between the tapered outer peripheral portion of the flange portion 5 and the web 15. can.
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 influenced by the above-described embodiments. It is obvious that a person skilled in the art can conceive various modifications or modifications within the scope of the technical idea described in the claims, and these are naturally within the technical scope of the present invention. be understood to belong to
例えば、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３の端部にフランジ部５が形成された梁補強金具を用いてもよい。 For example, the main body portion 3 of the beam reinforcing metal fitting is not limited to a cylindrical shape. For example, when the through-hole is rectangular, a beam reinforcing metal fitting having a flange portion 5 formed at the end portion of the main body portion 3 in the shape of a rectangular tube may be used.
１………梁補強金具
３………本体部
５………フランジ部
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
２１………内周面
Reference Signs List 1 Beam reinforcing metal fittings 3 Body part 5 Flange part 10 Beam reinforcing structure 11 Beam 13 Flange 15 Web 15a Front face 15b Rear surface 17 ……Through hole 19 ……Welded portion 21 ……Inner peripheral surface
Claims (3)
フランジ部と、
前記フランジ部の一方の側に突出して前記貫通孔に挿入される筒状の本体部と、
を具備し、
前記フランジ部は、前記本体部に向かって外径が縮径するテーパ形状を有し、
前記本体部は外径が一定であることを特徴とする梁補強金具。 A beam reinforcing fitting for reinforcing a beam having through holes formed in a web,
a flange portion;
a cylindrical main body portion protruding to one side of the flange portion and inserted into the through hole;
and
The flange portion has a tapered shape in which the outer diameter decreases toward the main body portion,
A beam reinforcing metal fitting , wherein the main body portion has a constant outer diameter .
前記フランジ部のテーパ形状の外径が最小となる位置付近が前記貫通孔の縁部と接触した状態で、前記フランジ部が前記ウェブに溶接され、
前記本体部は、前記ウェブの背面側に突出し、
前記フランジ部のテーパ形状の外周面と前記ウェブの正面との間に溶接部が形成されることを特徴とする梁補強構造。 A beam reinforcing structure using the beam reinforcing metal fitting according to claim 1,
The flange portion is welded to the web in a state where the vicinity of the position where the outer diameter of the tapered shape of the flange portion is the smallest is in contact with the edge portion of the through hole,
The main body protrudes to the back side of the web,
A beam reinforcing structure , wherein a welded portion is formed between a tapered outer peripheral surface of the flange portion and a front surface of the web .
前記フランジ部のテーパ形状の外径が最小となる位置付近が前記貫通孔の縁部と接触した状態で、前記フランジ部が前記ウェブに溶接され、
前記本体部は、前記ウェブの背面側に突出し、
前記本体部の外周面と前記ウェブの背面との間に溶接部が形成されることを特徴とする梁補強構造。 A beam reinforcing structure using the beam reinforcing metal fitting according to claim 1,
The flange portion is welded to the web in a state where the vicinity of the position where the outer diameter of the tapered shape of the flange portion is the smallest is in contact with the edge portion of the through hole,
The main body protrudes to the back side of the web,
A beam reinforcing structure , wherein a welded portion is formed between the outer peripheral surface of the body portion and the back surface of the web .
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006018865A1 (en) | 2004-08-17 | 2006-02-23 | Hitachi Metals Techno, Ltd. | Steel-framed beam reinforcing metal fixture |
| JP2008248616A (en) | 2007-03-30 | 2008-10-16 | Hitachi Metals Techno Ltd | Steel frame beam reinforcing metal fitting |
| JP2011174311A (en) | 2010-02-25 | 2011-09-08 | Katayama Stratec Kk | Method of reinforcing through hole in 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 |
| JP2016014234A (en) | 2014-07-01 | 2016-01-28 | 日立機材株式会社 | Beam reinforcement structure |
| 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 |
-
2019
- 2019-03-15 JP JP2019048692A patent/JP7246214B2/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006018865A1 (en) | 2004-08-17 | 2006-02-23 | Hitachi Metals Techno, Ltd. | Steel-framed beam reinforcing metal fixture |
| JP2008248616A (en) | 2007-03-30 | 2008-10-16 | Hitachi Metals Techno Ltd | Steel frame beam reinforcing metal fitting |
| JP2011174311A (en) | 2010-02-25 | 2011-09-08 | Katayama Stratec Kk | Method of reinforcing through hole in 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 |
| JP2016014234A (en) | 2014-07-01 | 2016-01-28 | 日立機材株式会社 | Beam reinforcement structure |
| 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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| Publication number | Publication date |
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| JP2020148067A (en) | 2020-09-17 |
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