JPH0693683A - Girder with opening having large diameter and manufacture thereof - Google Patents
Girder with opening having large diameter and manufacture thereofInfo
- Publication number
- JPH0693683A JPH0693683A JP17303991A JP17303991A JPH0693683A JP H0693683 A JPH0693683 A JP H0693683A JP 17303991 A JP17303991 A JP 17303991A JP 17303991 A JP17303991 A JP 17303991A JP H0693683 A JPH0693683 A JP H0693683A
- Authority
- JP
- Japan
- Prior art keywords
- web
- central
- rib
- openings
- rib body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Rod-Shaped Construction Members (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この出願の発明は、梁成を大きく
せずに開口の口径を大きくしても梁の剛性、耐力、変形
能力等が低下しない大口径の開口のある梁およびその製
造法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The invention of the present application relates to a beam having a large diameter opening and its manufacture in which the rigidity, proof stress, deformation capacity, etc. of the beam are not reduced even if the diameter of the opening is increased without increasing the beam formation. Concerning the law.
【０００２】[0002]
【従来の技術】空調装置等のダクト、管、線等は、鋼製
梁のウェブの開口を通して、天井裏等に配設している。
従来の開口のある鋼製梁には、（イ）第２８図および第
２９図に示すように、梁１のウェブ１ｂの円形の開口１
ｃのある部分にリング状の補強プレート２を溶接ｗした
もの、（ロ）第３０図および第３１図に示すように、梁
３のウェブ３ｂの円形の開口３ｃに、この開口３ｃの直
径と略同じ外径の短い円筒体の補強スリーブ４を嵌合し
て、この補強スリーブ４をウェブ３ｂに溶接したもの等
がある。2. Description of the Related Art Ducts, pipes, wires, etc. of an air conditioner or the like are arranged in a ceiling or the like through an opening of a web of steel beams.
For a conventional steel beam having an opening, as shown in FIGS. 28 and 29, the circular opening 1 of the web 1b of the beam 1 is used.
What welded the ring-shaped reinforcing plate 2 to a portion of c, (b) As shown in FIGS. 30 and 31, in the circular opening 3c of the web 3b of the beam 3, the diameter of this opening 3c and There is one in which a short cylindrical reinforcing sleeve 4 having substantially the same outer diameter is fitted and the reinforcing sleeve 4 is welded to the web 3b.
【０００３】[0003]
【発明が解決しようとする課題】前記（イ）および
（ロ）の鋼製梁においては、次のような欠点がある。
（イ）の鋼製梁においては、円形の開口１ｃを大きくす
ると、開口１ｃの周囲とフランジ１ａの内側面との間隔
ｄ1が小さくなり、補強プレート２のリングの幅が小さ
くなり、補強プレート２を設ける意味がなくなるから、
円形の開口１ｃを大きくすることができない。また、円
形の開口１ｃを大きくしてゆくと、梁の剛性が低下し、
必要な耐力および変形能力が確保できなくなる。（ロ）
の鋼製梁においては、円形の開口３ｃを大きくし、かつ
補強スリーブ４の外径を大きくすると、開口３ｃの周囲
とフランジ３ａの内側面との間隔ｄ2が小さくなり、梁
の剛性、耐力等が低下するから、円形の開口３ｃの大き
さを十分に大きくすることができない。また、間隙ｄ2
を小さくして、いっぱいに補強スリーブ４を配置する
と、補強スリーブ４のフランジ３ａへの溶接がむずかし
くなる。 この出願の発明の解決しようとする課題は、
上記のような欠点がない大口径の開口のある梁を提供す
ること、換言すると、梁成を大きくせずに開口の口径を
大きくでき、かつ製造が容易で、剛性、耐力、変形能力
等の低下をきたさない大口径の開口のある梁および製造
工程が単純化できて施工が容易な大口径の開口のある鋼
製梁の製造法を提供することにある。The steel beams of the above (a) and (b) have the following drawbacks.
In the steel beam of (a), when the circular opening 1c is enlarged, the distance d 1 between the periphery of the opening 1c and the inner side surface of the flange 1a becomes smaller, and the width of the ring of the reinforcing plate 2 becomes smaller, so that the reinforcing plate Since there is no point in providing 2,
The circular opening 1c cannot be enlarged. Further, as the circular opening 1c is enlarged, the rigidity of the beam decreases,
The required proof stress and deformability cannot be secured. (B)
In the steel beam of No. 2, if the circular opening 3c is made large and the outer diameter of the reinforcing sleeve 4 is made large, the distance d 2 between the periphery of the opening 3c and the inner side surface of the flange 3a becomes small, and the rigidity and yield strength of the beam are reduced. And so on, the size of the circular opening 3c cannot be made sufficiently large. Also, the gap d 2
When the reinforcing sleeve 4 is arranged so as to be small and the reinforcing sleeve 4 is fully filled, it becomes difficult to weld the reinforcing sleeve 4 to the flange 3a. The problem to be solved by the invention of this application is
To provide a beam with a large-diameter opening that does not have the above-mentioned drawbacks, in other words, the diameter of the opening can be increased without increasing the beam formation, and manufacturing is easy, and rigidity, proof stress, deformability, etc. It is an object of the present invention to provide a method of manufacturing a beam having a large-diameter opening that does not deteriorate and a steel beam having a large-diameter opening that can be simplified in manufacturing process and easy to construct.
【０００４】[0004]
【課題を解決するための手段】この出願の発明は前記課
題を解決するための手段として、次の構成を採用する。
この発明の構成は、ウェブと一対のフランジとからな
る梁において、ウェブに二つの開口が近接して形成さ
れ、ウェブの一側の二つの開口の間の部分に、略Ｘ字状
の中央リブ体が設けられ、略Ｘ字状の中央リブ体の４方
向に延びる中央リブ片が梁の長手方向に対して略４５゜
傾斜し、フランジの内側面にわたって延在し、ウェブ面
に対して略直角に形成され、ウェブの他側の二つの開口
の間の部分に、略Ｘ字状の中央リブ体が設けられ、略Ｘ
字状の中央リブ体の４方向に延びる中央リブ片が梁の長
手方向に対して略４５゜傾斜し、フランジの内側面にわ
たって延在し、ウェブ面に対して略直角に形成され、ウ
ェブの二つの開口の間の部分が一側の略Ｘ字状の中央リ
ブ体と他側の略Ｘ字状の中央リブ体により挾まれている
ことを特徴とする大口径の開口のある梁にある。ウェブ
と一対のフランジとからなる梁は、たとえば、Ｈ形鋼、
Ｈ形組立鋼等で構成する。ウェブに形成する開口の形状
は、たとえば、円形または四角形にし、開口を四角形す
る場合は、四角形の対角線の一方を梁のウェブの中央を
通る長手方向の線に略一致させ、四角形の対角線の他方
を梁の長手方向に対して直角な線に略一致させる。ま
た、四角形の開口の４角部にウェブ厚さの３倍程度（た
とえば、２０ｍｍないし４０ｍｍ）の半径の円弧部を形
成する。好ましい実施形態においては、ウェブの一側の
二つの開口の外側方の部分にそれぞれ側方リブ体が設け
られ、側方リブ体を構成する側方リブ片が梁の長手方向
に対して略４５゜傾斜して形成され、また、ウェブの他
側の二つの開口の外側方の部分にそれぞれ側方リブ体が
設けられ、側方リブ体を構成する側方リブ片が梁の長手
方向に対して略４５゜傾斜して形成され、ウェブの二つ
の開口の外側方の部分が一側の側方リブ体と他側の側方
リブ体とにより挾まれ、補強されるようになっている。
Ｘ字状の中央リブ体は、たとえば、一つの中央長リブ片
と該中央長リブ片の中央部の両側にそれぞれ略直角に結
合する中央短リブ片とで構成したり、Ｘ字の中央におい
て間隔を空けてＸ字状に配する四つの中央短リブ片で構
成したりする。四つの中央短リブ片で構成する場合は、
中央短リブ片を台形、直角三角形、または矩形にする。The invention of this application adopts the following configuration as means for solving the above problems.
According to the configuration of the present invention, in a beam composed of a web and a pair of flanges, two openings are formed close to the web, and a substantially X-shaped central rib is formed in a portion between the two openings on one side of the web. The central rib piece of the substantially X-shaped central rib body, which extends in four directions, is inclined at an angle of approximately 45 ° with respect to the longitudinal direction of the beam, extends over the inner surface of the flange, and is approximately at the web surface. A substantially X-shaped central rib body is provided at a portion between the two openings on the other side of the web, which is formed at a right angle.
A central rib piece extending in four directions of the character-shaped central rib body is inclined at about 45 ° with respect to the longitudinal direction of the beam, extends over the inner surface of the flange, and is formed substantially at right angles to the web surface. A beam with a large aperture is characterized in that the portion between two openings is sandwiched by a substantially X-shaped central rib body on one side and a substantially X-shaped central rib body on the other side. . A beam composed of a web and a pair of flanges is, for example, an H-shaped steel,
It is composed of H-shaped assembled steel. The shape of the opening formed in the web is, for example, a circle or a quadrangle, and when the opening is a quadrangle, one of the diagonal lines of the quadrangle is substantially aligned with the longitudinal line passing through the center of the beam web, and the other of the diagonal lines of the quadrangle is To substantially coincide with a line perpendicular to the longitudinal direction of the beam. Further, an arc portion having a radius of about 3 times the web thickness (for example, 20 mm to 40 mm) is formed at the four corners of the rectangular opening. In a preferred embodiment, a lateral rib body is provided on each of the outer side portions of the two openings on one side of the web, and the lateral rib pieces forming the lateral rib body are approximately 45 in the longitudinal direction of the beam. It is formed to be inclined, and side ribs are respectively provided on the outer side portions of the two openings on the other side of the web, and the side rib pieces constituting the side ribs are arranged with respect to the longitudinal direction of the beam. The two outer openings of the web are sandwiched between one side rib body and the other side rib body to be reinforced.
The X-shaped central rib body is composed of, for example, one central long rib piece and central short rib pieces that are connected to both sides of the central portion of the central long rib piece at substantially right angles, or at the center of the X shape. For example, it is composed of four central short rib pieces arranged in an X shape at intervals. When composed of four central short rib pieces,
Trapezoidal, right-angled triangular, or rectangular center rib pieces.
【０００５】また、この発明の構成は、ウェブと一対の
フランジとからなる梁において、ウェブに二つの開口が
近接して形成され、ウェブの一側の二つの開口の間の部
分に、梁の長手方向に対して略４５゜傾斜させて中央リ
ブ体が設けられ、この一側の中央リブ体がフランジの間
に延在し、かつウェブ面に対して略直角に形成され、ウ
ェブの他側の二つの開口の間の部分に、梁の長手方向に
対して前記の一側の中央リブ体の傾斜方向と反対の方向
に略４５゜傾斜させて中央リブ体が設けられ、この他側
の中央リブ体がフランジの間の延在し、かつウェブ面に
対して略直角に形成され、ウェブの二つの開口の間の部
分が一側の中央リブ体と他側の中央リブ体で挾まれ、一
側の中央リブ体と他側の中央リブ体とが略Ｘ字状に交差
して配置されていることを特徴とする大口径の開口のあ
る梁にある。好ましい実施形態においては、中央リブ体
を、たとえば、長い矩形状の板状体で構成し、ウェブの
一側の二つの開口の外側方の部分にそれぞれ側方リブ体
を設け、これらの側方リブ体を一側の中央リブ体と略平
行に形成し、ウェブの他側の二つの開口の外側方の部分
にもそれぞれ側方リブ体を設け、これらの側方リブ体を
他側の中央リブ体と略平行に形成する。または、ウェブ
の一側の一方の開口の外側方の部分にく字状の側方リブ
体を設け、ウェブの他側の他方の開口の外側方の部分に
く字状の側方リブ体を設け、これらのく字状の側方リブ
体のく字の辺を梁の長手方向に対して略４５゜傾斜させ
て形成する。Further, according to the structure of the present invention, in a beam composed of a web and a pair of flanges, two openings are formed close to the web, and the beam is formed at a portion between the two openings on one side of the web. A central rib body is provided at an angle of about 45 ° with respect to the longitudinal direction, and the central rib body on one side extends between the flanges and is formed substantially at right angles to the web surface, and the other side of the web is formed. A central rib body is provided in a portion between the two openings of the center rib body at an angle of about 45 ° in a direction opposite to the inclination direction of the central rib body on the one side with respect to the longitudinal direction of the beam. The central rib body extends between the flanges and is formed substantially at right angles to the web surface, and the portion between the two openings of the web is sandwiched between the central rib body on one side and the central rib body on the other side. , The central rib body on one side and the central rib body on the other side are arranged so as to intersect in a substantially X shape. In a beam having an opening of a large diameter, characterized in that. In a preferred embodiment, the central rib body is formed of, for example, a long rectangular plate-like body, and side rib bodies are provided on the outer side portions of the two openings on one side of the web. A rib body is formed substantially parallel to the central rib body on one side, and side rib bodies are also provided on the outer sides of the two openings on the other side of the web. It is formed substantially parallel to the rib body. Alternatively, a V-shaped side rib body is provided on the outer side portion of one opening on one side of the web, and a V-shaped side rib body is provided on the outer side portion of the other opening on the other side of the web. The lateral sides of the V-shaped lateral ribs are formed by inclining the sides of the V-shaped ribs at an angle of approximately 45 ° with respect to the longitudinal direction of the beam.
【０００６】さらに、この発明の構成は、ウェブと一対
のフランジを備え、ウェブの部分に二つの大口径の開口
を近接して形成した鋼製梁の製造法において、ウェブの
一側の二つの開口の間の部分に、フランジの間の略全域
にわたって延在する中央長リブ片を、梁の長手方向に対
して略４５゜傾斜させ、かつウェブ面に対して略直角に
配置して、ウェブ面およびフランジの内側面に溶接し、
中央長リブ片の中央部からフランジの内側面にわって延
びる二つの中央短リブ片を、前記中央長リブ片に対して
略直角に、かつウェブ面に対して略直角に配置して、ウ
ェブ面、フランジの内側面および中央長リブ片に溶接し
て、略Ｘ字状の中央リブ体を形成し、ウェブの他側の二
つの開口の間の部分に、フランジの間の略全域にわたっ
て延在する中央長リブ片を、梁の長手方向に対して略４
５゜傾斜させ、かつウェブ面に対して略直角に配置し
て、ウェブ面およびフランジの内側面に溶接し、中央長
リブ片の中央部からフランジの内側にわって延びる一対
の中央短リブ片を、前記中央長リブ片に対して略直角
に、かつウェブ面に対して略直角に配置して、ウェブ
面、フランジの内側面および中央長リブ片にそれぞれ溶
接することを特徴とする大口径の開口のある鋼製梁の製
造法にある。好ましい実施形態においては、ウェブの一
側の二つの開口の外側方の部分にそれぞれ側方リブ体を
配し、側方リブ体を構成する側方リブ片を梁の長手方向
に対して略４５゜傾斜させ、ウェブ面やフランジの内側
面に溶接する。ウェブの他側の二つの開口の外側方の部
分にそれぞれ側方リブ体を配し、側方リブ体を構成する
側方リブ片を梁の長手方向に対して略４５゜傾斜させ、
ウェブ面やフランジの内側面に溶接する。Further, according to the structure of the present invention, in a method of manufacturing a steel beam having a web and a pair of flanges, and two large-diameter openings are formed close to each other in the web portion, two webs on one side of the web are manufactured. In the portion between the openings, a central long rib piece extending over almost the entire area between the flanges is inclined at an angle of about 45 ° with respect to the longitudinal direction of the beam and is arranged at a substantially right angle to the web surface. Welded to the surface and the inner surface of the flange,
Two central short rib pieces extending from the central portion of the central long rib piece over the inner surface of the flange are arranged substantially at right angles to the central long rib piece and at substantially right angles to the web surface, and the web Surface, the inner surface of the flange and the central long rib piece to form a substantially X-shaped central rib body, which extends between the two openings on the other side of the web over substantially the entire area between the flanges. The existing central long rib piece is approximately 4 in the longitudinal direction of the beam.
A pair of central short rib pieces, which are inclined by 5 ° and are arranged substantially at right angles to the web surface, are welded to the web surface and the inner surface of the flange, and extend from the central portion of the central long rib piece to the inside of the flange. Is disposed substantially at right angles to the central long rib pieces and substantially at right angles to the web surface, and is welded to the web surface, the inner surface of the flange and the central long rib piece, respectively. It is in the method of manufacturing steel beams with openings. In a preferred embodiment, a side rib body is arranged at each of the outer side portions of the two openings on one side of the web, and the side rib pieces constituting the side rib body are arranged at about 45 with respect to the longitudinal direction of the beam. Tilted and welded to the web surface and inner surface of the flange. Side ribs are arranged respectively on the outer side portions of the two openings on the other side of the web, and the side rib pieces constituting the side ribs are inclined at about 45 ° with respect to the longitudinal direction of the beam.
Weld to the web surface or the inner surface of the flange.
【０００７】この発明の実施に使う側方リブ体は、通
常、板状体、棒状体等で構成し、その形態としては、た
とえば、矩形状板、台形状板、直角三角形状板、短い棒
状体、長いの矩形状板や棒状体の中央を略直角に曲げて
形成したく字状片等があり、矩形状板、直角三角形状
板、台形状板、棒状体等を互いの間に隙間を空けてく字
状に配置したものもある。中央長リブ片、中央短リブ片
および側方リブ体として、それらの梁のウェブとフラン
ジとの結合部分の円弧状部分に対向する角部に切欠き部
を形成したものを使うと、溶接作業がしやすくなる。開
口を四角形する場合は、開口の周縁部から少々離れたウ
ェブの部分に、周縁部に略平行して中央長リブ片、中央
短リブ片、側方リブ体等を配置する。The lateral rib body used for carrying out the present invention is usually composed of a plate-like body, a rod-like body, etc., and its form is, for example, a rectangular plate, a trapezoidal plate, a right-angled triangular plate, a short rod-shape. Body, a long rectangular plate or a bar-shaped piece formed by bending the center of a rod-shaped body at a substantially right angle.There are gaps between rectangular plates, right-angled triangular plates, trapezoidal plates, rod-shaped bodies, etc. There are also those that are arranged in a V shape with an open space. Welding work can be performed by using center long rib pieces, center short rib pieces and side rib bodies with notches formed at the corners facing the arc-shaped portion of the connection between the beam web and flange. It becomes easier to peel. When the opening is formed in a quadrangle, a central long rib piece, a central short rib piece, a lateral rib body, and the like are arranged in a portion of the web slightly apart from the peripheral edge portion of the opening substantially parallel to the peripheral edge portion.
【０００８】[0008]
【作 用】この発明は、ウェブの二つの開口の間の部分
を一側の略Ｘ字状の中央リブ体と他側の略Ｘ字状の中央
リブ体により挾むから、一対の略Ｘ字状の中央リブ体の
トラス効果により、二つの開口のある部分の梁を補強す
ることができ、また、ウェブの二つの開口の外側方の部
分を一側の側方リブ体と他側の側方リブ体とにより挾む
から、二つの開口の外側方の部分の梁を補強することが
でき、大口径の開口のある梁に十分な剛性、耐力、変形
能力等を付与することができる。[Operation] According to the present invention, the portion between the two openings of the web is sandwiched by the substantially X-shaped central rib body on one side and the substantially X-shaped central rib body on the other side. The truss effect of the central rib-shaped body can reinforce the beam in the two openings, and the outer part of the two openings of the web can be divided into one side rib and one side rib. Since it is sandwiched by the side rib body, it is possible to reinforce the beam on the outer side of the two openings, and it is possible to give sufficient rigidity, proof stress, deformability, etc. to the beam having the large-diameter opening. .
【０００９】[0009]
【実施例】この発明の実施例１が図１ないし図１２に示
されている。図１および図２に示すように、幅ｂ1で高
さｈのＨ形鋼梁１０のウェブ１０ｂの所望の部分に、互
いに近接して二つの大口径の四角形の開口Ａ１、Ａ２を
形成する。二つの四角形の開口Ａ１、Ａ２は、その対角
線の一方が梁のウェブの中央を通る長手方向の線に一致
し、他方の対角線が梁の長手方向に対して直角な線に一
致するように、形成する。四角形の開口Ａ１、Ａ２の４
隅部に円弧状部Ａ１ｅ、Ａ２ｅが形成され、これらの円
弧状部Ａ１ｅ、Ａ２ｅの円の半径は、梁１０のウェブ１
０ｂの部分の厚さの約３倍（たとえば、２０ｍｍないし
４０ｍｍ）程度にされ、二つの開口Ａ１、Ａ２の上下の
隅部は、その開口縁とフランジ１０ａと間に、フランジ
１０ａとウェブ１０ｂとの連結部に形成された円弧状部
１０ｃが残るように、間隔ｘ1を空けて形成する。次
に、中央長リブ片１１は、鋼板製で、図３に示すよう
に、短い辺１１ａ、１１ｂの長さをＨ形鋼梁１０のフラ
ンジの幅ｂ1からウェブ１０ｂの厚さを引いた値の半分
の幅ｂ2以下にし、長い辺１１ｃ、１１ｄの長さを梁の
長さ方向に対して略４５゜傾斜した線のＨ形鋼梁１０の
ウェブ１０ｂを横切る部分の長さＬ1よりも少々短くし
た矩形に形成され、長い辺１１ｃと短い辺１１ａ、１１
ｂとからなる二つの角部にそれぞれ切欠き部１１ｅを形
成する。中央短リブ片１２は、鋼板製で、図４に示すよ
うに、短い辺１２ａ、１２ｂの長さを前記幅ｂ2以下に
し、長い辺１２ｃ、１２ｄの長さを前記長さＬ1から中
央長リブ片１１の厚さを引いた値の半分の長さＬ2以下
とした矩形に形成され、長い辺１２ｃと短い辺１２ａと
からなる角部に切欠き部１２ｅを形成する。切欠き部１
１ｅ、１２ｅは、たとえば、一辺が２０ｍｍ程度の直角
二等辺三角形である。側方リブ片の素材は、鋼板製で、
図５に示すように、短い辺１３ａ、１３ｂの長さを前記
幅ｂ2以下にし、長い辺１３ｃ、１３ｄの長さを前記長
さＬ1さよりも少々短い長さにした矩形で、長い辺１３
ｃと短い辺１３ａ、１３ｂとからなる二つの角部に切欠
き部１３ｅが形成されている。側方リブ片１３は、図６
に示すように、図５に示す素材をその中央で略直角に曲
げ、屈曲部の内側に開口Ａ１、Ａ２の隅部の円弧状部Ａ
１ｅ、Ａ２ｅの円の半径よりも少々大きい半径の円弧状
部１３ｆが形成されるようにする。Embodiment 1 Embodiment 1 of the present invention is shown in FIGS. As shown in FIGS. 1 and 2, two large-diameter square openings A1 and A2 are formed close to each other in a desired portion of a web 10b of an H-shaped steel beam 10 having a width b 1 and a height h. . The two quadrangular openings A1, A2 are such that one of their diagonals coincides with a longitudinal line passing through the center of the web of the beam and the other diagonal coincides with a line perpendicular to the longitudinal direction of the beam. Form. Square openings A1 and A2 4
Arc-shaped portions A1e and A2e are formed at the corners, and the radius of the circle of these arc-shaped portions A1e and A2e is the web 1 of the beam 10.
The thickness of the portion 0b is about 3 times (for example, 20 mm to 40 mm), and the upper and lower corners of the two openings A1 and A2 are formed between the flange 10a and the web 10b between the opening edge and the flange 10a. It is formed with a space x 1 so that the arcuate portion 10c formed at the connecting portion is left. Next, the central long rib piece 11 is made of a steel plate, and as shown in FIG. 3, the lengths of the short sides 11 a and 11 b are obtained by subtracting the thickness of the web 10 b from the width b 1 of the flange of the H-shaped steel beam 10. A width L 2 of half the value or less and a length L 1 of a portion of the H-shaped steel beam 10 that crosses the web 10b of the line in which the lengths of the long sides 11c and 11d are inclined by about 45 ° with respect to the length direction of the beam. Formed into a rectangle that is slightly shorter than the long side 11c and the short sides 11a, 11
A notch 11e is formed in each of the two corners consisting of b and b. The central short rib piece 12 is made of a steel plate, and as shown in FIG. 4, the lengths of the short sides 12a and 12b are set to the width b 2 or less, and the lengths of the long sides 12c and 12d are set from the length L 1 to the center. The long rib piece 11 is formed in a rectangular shape having a length L 2 or less, which is half the value obtained by subtracting the thickness of the long rib piece 11, and a cutout portion 12e is formed at a corner portion having a long side 12c and a short side 12a. Notch 1
1e and 12e are, for example, right-angled isosceles triangles each side of which is about 20 mm. The material of the side rib pieces is made of steel plate,
As shown in FIG. 5, the short side 13a, the length of 13b in the width b 2 below, the long sides 13c, the length of 13d rectangle you slightly shorter length than the length L 1 of the long sides Thirteen
A notch 13e is formed at two corners composed of c and short sides 13a and 13b. The side rib pieces 13 are shown in FIG.
As shown in FIG. 5, the material shown in FIG. 5 is bent at a substantially right angle in the center thereof, and the arcuate portion A at the corners of the openings A1 and A2 is provided inside the bent portion.
The arcuate portion 13f having a radius slightly larger than the radius of the circle of 1e and A2e is formed.
【０００１０】次に、Ｈ形鋼梁１０の四角形の開口Ａ
１、Ａ２のまわりへのリブ片１１、１２、１３の取付け
方等を説明する。Ｈ形鋼梁１０のウェブ１０ｂの一方の
ウェブ面１０ｂ１の二つの開口Ａ１、Ａ２の間に、中央
長リブ片１１を配し、中央長リブ片１１の長い辺１１ｃ
を、間隔ｘ2をおいて二つの四角形の開口Ａ１、Ａ２の
辺Ａ１ａ、Ａ２ｂに沿わせ、中央長リブ片１１の短い辺
１１ａ、１１ｂをＨ形鋼梁１０のフランジの内側面１０
ａ１に沿わせて、中央長リブ片１１がウェブ面１０ｂ１
に対して略直角になるように、その辺１１ｃをウェブ１
０ｂ１面に溶接（たとえば、すみ肉溶接）ｗし、その辺
１１ａ、１１ｂをフランジの内側面１０ａ１に溶接（た
とえば、突合せ溶接）ｗする。同じ側のウェブ面１０ｂ
１の二つの開口Ａ１、Ａ２の間に中央短リブ片１２、１
２を配し、一方の中央短リブ片１２を間隔ｘ2をおいて
前記開口Ａ２の辺Ａ２ａに沿わせて、他方の中央短リブ
片１２を間隔ｘ2をおいて前記開口Ａ１の辺Ａ１ｂに沿
わせて、これら二つの中央短リブ片１２の辺１２ａをフ
ランジの内側面１０ａ１に沿わせて、中央短リブ片１
２、１２をウェブ面１０ｂ１に対して略直角になるよう
に、その辺１２ｃをウェブ面１０ｂ１に溶接（たとえ
ば、すみ肉溶接）ｗし、かつそれらの辺１２ａをフラン
ジの内側面１０ａ１に溶接（たとえば、突合せ溶接）ｗ
する。また、中央短リブ片１２、１２の辺１２ｂを中央
長リブ片１１の中央部の側面に溶接（たとえば、突合せ
溶接）ｗする。そして、同じ側のウェブ面１０ｂ１の開
口Ａ１の左側方の部分および開口Ａ２の右側方の部分
に、それぞれ側方リブ片１３を配し、これらの側方リブ
片１３の長辺１３ｃを間隔ｘ2をおいて開口Ａ１の辺Ａ
１ｃ、Ａ１ｄまたは開口Ａ２の辺Ａ２ｃ、Ａ２ｄに沿わ
せて、各側方リブ片１３の辺１１ａ、１１ｂをＨ形鋼梁
１０のフランジの内側面１０ａ１に沿わせ、各側方リブ
片１３がウェブ面１０ｂ２に対して略直角になるよう
に、その辺１３ｃをウェブ面１０ｂ１に溶接（たとえ
ば、すみ肉溶接）ｗし、かつそれらの辺１１ａ、１１ｂ
をフランジの内側面１０ａ１に溶接（たとえば、突合せ
溶接）ｗする。Next, the rectangular opening A of the H-shaped steel beam 10
How to attach the rib pieces 11, 12, and 13 around 1, A2 will be described. The central long rib piece 11 is arranged between the two openings A1 and A2 of the one web surface 10b1 of the web 10b of the H-shaped steel beam 10, and the long side 11c of the central long rib piece 11 is arranged.
Along the sides A1a, A2b of the two quadrangular openings A1, A2 at a distance x 2 and the short sides 11a, 11b of the central long rib piece 11 are connected to the inner surface 10 of the flange of the H-shaped steel beam 10.
Along the a1, the central long rib piece 11 has the web surface 10b1.
The side 11c of the web 1 so that it is substantially perpendicular to
The surface 0b1 is welded (for example, fillet welding) w, and its sides 11a and 11b are welded (for example, butt welding) w to the inner surface 10a1 of the flange. Web surface 10b on the same side
The central short rib pieces 12, 1 between the two openings A1, A2
Arranged 2, and one of the central short rib segment 12 at a distance x 2 along a side A2a of the opening A2, sides of the opening A1 and the other central short rib segment 12 at a distance x 2 A1b Along the inner side surface 10a1 of the flange, the sides 12a of the two central short rib pieces 12 along
The sides 12c are welded (for example, fillet weld) w to the web surface 10b1 and the sides 12a are welded to the inner surface 10a1 of the flange so that the edges 2 and 12 are substantially perpendicular to the web surface 10b1 ( For example, butt welding) w
To do. Further, the side 12b of the central short rib piece 12, 12 is welded (for example, butt welding) to the side surface of the central portion of the central long rib piece 11. Then, the side rib pieces 13 are arranged on the left side portion of the opening A1 and the right side portion of the opening A2 of the web surface 10b1 on the same side, and the long sides 13c of these side rib pieces 13 are separated by the interval x. Place 2 and side A of opening A1
1c, A1d or the sides A2c, A2d of the opening A2, the sides 11a, 11b of each side rib piece 13 are arranged along the inner side surface 10a1 of the flange of the H-shaped steel beam 10, and each side rib piece 13 is The side 13c is welded (for example, fillet weld) w to the web surface 10b1 so as to be substantially at right angles to the web surface 10b2, and the sides 11a and 11b are also formed.
Is welded (for example, butt welding) to the inner surface 10a1 of the flange.
【０００１１】また、Ｈ形鋼梁１０のウェブ１０ｂの他
方のウェブ面１０ｂ２の二つの開口Ａ１、Ａ２の間に、
中央長リブ片１１を配し、中央長リブ片１１の長い辺１
１ｃを間隔ｘ2をおいて二つの四角形の開口Ａ１、Ａ２
の辺Ａ２ａ、Ａ１ｂに沿わせて、中央長リブ片１１の短
い辺１１ａ、１１ｂをＨ形鋼梁１０のフランジの内側面
１０ａ２に沿わせて、中央長リブ片１１がウェブ面１０
ｂ１に対して直角になるように、その辺１１ｃをウェブ
１０ｂ２面に溶接ｗし、その辺１１ａ、１１ｂをフラン
ジの内側面１０ａ２に溶接ｗする。同じ側のウェブ面１
０ｂ２の二つの開口Ａ１、Ａ２の間に中央短リブ片１
２、１２を配し、一方の中央短リブ片１２を間隔ｘ2を
おいて開口Ａ１の辺Ａ１ａに沿わせて、他方の中央短リ
ブ片１２を間隔ｘ2をおいて開口Ａ２の辺Ａ２ｂに沿わ
せて、これら二つの中央短リブ片１２の辺１２ａをフラ
ンジの内側面１０ａ２に沿わせて、中央短リブ片１２、
１２をウェブ面１０ｂ２に対して略直角になるように、
その辺１２ｃをウェブ面１０ｂ２に溶接ｗし、かつそれ
らの辺１１ａをフランジの内側面１０ａ２に溶接ｗす
る。また、中央短リブ片１２、１２の辺１２ｂを中央長
リブ片１１の中央部の側面に溶接ｗする。そして、同じ
側のウェブ面１０ｂ２の開口Ａ１の左側方の部分および
開口Ａ２の右側方の部分に、それぞれ側方リブ片１３を
配し、これらの側方リブ片１３の長辺１３ｃを間隔ｘ2
をおいて開口Ａ１の辺Ａ１ｃ、Ａ１ｄまたは開口Ａ２の
辺Ａ２ｃ、Ａ２ｄに沿わせて、各側方リブ片１３の辺１
１ａ、１１ｂをＨ形鋼梁１０のフランジの内側面１０ａ
２に沿わせ、各側方リブ片１３がウェブ面１０ｂ２に対
して略直角になるように、その辺１３ｃをウェブ面１０
ｂ２に溶接ｗし、かつそれらの辺１１ａ、１１ｂをフラ
ンジの内側面１０ａ２に溶接ｗする。なお、フランジと
ウェブとの連結部の円弧状部１０ｃに対応する中央長リ
ブ片１１、中央短リブ片１２および側方リブ片１３の角
部に切欠き部１１ｅを形成したから、各リブ片１１、１
２、１３を所望の位置に容易に溶接することができる。
実施例１の大口径の開口のある鋼製梁と通常の無開口
梁との単調載荷実験および繰返し載荷実験の結果が図１
２に示されている。この結果より、鋼製梁の剛性におい
ては、両者は同等であり、変形能力においては、中央長
短リブ片１１、１２をＸ字状に結合したＸ字状の中央リ
ブ体のトラス効果等により、実施例１の鋼製梁が向上し
ていることがわかる。Further, between the two openings A1 and A2 on the other web surface 10b2 of the web 10b of the H-shaped steel beam 10,
The central long rib piece 11 is arranged, and the long side 1 of the central long rib piece 11 is arranged.
1c the at intervals x 2 of two square openings A1, A2
Along the inner sides 10a2 of the flange of the H-shaped steel beam 10 along the shorter sides 11a, 11b of the central long rib pieces 11 along the sides A2a, A1b of
The side 11c is welded w to the surface of the web 10b2 and the sides 11a and 11b are welded w to the inner surface 10a2 of the flange so as to be perpendicular to b1. Web side 1 on the same side
The short rib piece 1 between the two openings A1 and A2 of 0b2
Arrange 2,12, and along a side A1a opening A1 the one central short rib segment 12 at a distance x 2, sides of the opening A2 and the other central short rib segment 12 at a distance x 2 A2b Along the inner side surface 10a2 of the flange, the sides 12a of these two central short rib pieces 12 are
12 so that it is substantially perpendicular to the web surface 10b2,
The side 12c is welded w to the web surface 10b2, and those sides 11a are welded w to the inner surface 10a2 of the flange. Also, the side 12b of the central short rib piece 12, 12 is welded to the side surface of the central portion of the central long rib piece 11 by welding. Then, the side rib pieces 13 are arranged on the left side portion of the opening A1 and the right side portion of the opening A2 of the web surface 10b2 on the same side, and the long sides 13c of these side rib pieces 13 are separated by the interval x. 2
Along the sides A1c, A1d of the opening A1 or the sides A2c, A2d of the opening A2, the side 1 of each side rib piece 13
1a and 11b are the inner surface 10a of the flange of the H-shaped steel beam 10.
2 so that each side rib piece 13 is substantially perpendicular to the web surface 10b2 and its side 13c is formed on the web surface 10b.
Weld w to b2 and weld their sides 11a, 11b to the inner surface 10a2 of the flange. Since the notch 11e is formed at the corner of the central long rib piece 11, the central short rib piece 12 and the side rib piece 13 corresponding to the arcuate portion 10c of the connecting portion between the flange and the web, each rib piece is formed. 11, 1
2, 13 can be easily welded to a desired position.
FIG. 1 shows the results of the monotonic loading test and the repeated loading test of the steel beam having the large-diameter aperture and the ordinary apertureless beam of Example 1.
2 is shown. From these results, the rigidity of the steel beam is the same as each other, and the deformability is due to the truss effect of the X-shaped central rib body in which the central long and short rib pieces 11 and 12 are connected in an X shape. It can be seen that the steel beam of Example 1 is improved.
【０００１２】この発明の実施例２が図１３および図１
４に示されている。実施例２においては、Ｈ形鋼梁１
０、中央長リブ片１１および側方リブ片１３の構成、お
よびＨ形鋼梁１０と中央長リブ片１１との関係は実施例
１と同じであり、実施例２では中央短リブ片１２等が省
かれている。Ｈ形鋼梁１０のウェブ１０ｂの一方のウェ
ブ面１０ｂ１の開口Ａ１の左側方の部分にく字状の側方
リブ片１３を配し、側方リブ片１３の辺１３ｃを間隔ｘ
2をおいて開口Ａ１の辺Ａ１ｃ、Ａ１ｄに沿わせて、そ
の辺１１ａ、１１ｂをフランジの内側面１０ａ１に沿わ
せ、側方リブ片１３がウェブ面１０ｂ１に対して略直角
になるように、その辺１３ｃをウェブ面１０ｂ１に溶接
し、その辺１３ａ、１３ｂをフランジの内側面１０ａ１
に溶接する。また、Ｈ形鋼梁１０のウェブ１０ｂの他方
のウェブ面１０ｂ２の開口Ａ２の右側方の部分にく字状
の側方リブ片１３を配し、側方リブ片１３の辺１３ｃを
間隔ｘ2をおいて開口Ａ２の辺Ａ２ｃ、Ａ２ｄに沿わせ
て、その辺１３ａ、１３ｂをフランジの内側面１０ａ１
に沿わせ、側方リブ片１３がウェブ面１０ｂ１に対して
略直角になるように、その辺１３ｃをウェブ面１０ｂ１
に溶接し、その辺１３ａ、１３ｂをフランジの内側面１
０ａ２に溶接する。Embodiment 2 of the present invention is shown in FIG. 13 and FIG.
4 is shown. In Example 2, the H-shaped steel beam 1
0, the configuration of the central long rib piece 11 and the side rib piece 13, and the relationship between the H-shaped steel beam 10 and the central long rib piece 11 are the same as those in the first embodiment, and in the second embodiment, the central short rib piece 12 and the like. Is omitted. A dogleg-shaped side rib piece 13 is arranged in a portion on the left side of the opening A1 of one web surface 10b1 of the web 10b of the H-shaped steel beam 10, and a side 13c of the side rib piece 13 is spaced by a distance x.
2 along the sides A1c, A1d of the opening A1, the sides 11a, 11b along the inner surface 10a1 of the flange, so that the side rib pieces 13 are substantially perpendicular to the web surface 10b1, The side 13c is welded to the web surface 10b1 and the sides 13a, 13b are welded to the inner surface 10a1 of the flange.
Weld to. In addition, a V-shaped side rib piece 13 is arranged on the right side of the opening A2 of the other web surface 10b2 of the web 10b of the H-shaped steel beam 10, and the side 13c of the side rib piece 13 is separated by a space x 2. Along the sides A2c, A2d of the opening A2, and the sides 13a, 13b are formed on the inner surface 10a1 of the flange.
The side ribs 13 so that the lateral rib pieces 13 are substantially perpendicular to the web surface 10b1.
Welded to the inner surface 1 of the flange 13a, 13b
Weld to 0a2.
【０００１３】この発明の実施例３が図１５ないし図１
９に示されている。Ｈ形鋼梁１０、中央長リブ片１１お
よび中央短リブ片１２の構成、ならびに中央長短リブ片
１１、１２のＨ形鋼梁１０への取付け方は、実施例１と
同じである。 実施例３においては、開口Ａ１の左側方
および開口Ａ２の右側方に配置する側方リブ体１３を、
二つの同形の直角三角形の側方リブ片１３Ａで構成す
る。側方リブ片１３Ａは、鋼板製で、図１７に示されて
いるように、直角をはさむ一方の短辺１３Ａａの長さが
前記幅ｂ2以下であり、直角をはさむ他方の長辺１３Ａ
ｂが前記長さＬ2以下である直角三角形に形成され、長
辺１３Ａｂと短辺１３Ａａとからなる角部に切欠き部１
３Ａｅが形成されている。図１５および図１６に示すよ
うに、Ｈ形鋼梁１０のウェブ１０ｂの両方のウェブ面１
０ｂ１、１０ｂ２の開口Ａ１の左側方の部分および開口
Ａ２の右側方の部分にそれぞれ側方リブ片１３Ａを配
し、各側方リブ片１３Ａの辺１３ｂを間隔ｘ 2をおいて
各開口Ａ１、Ａ２の辺Ａ１ｃ、Ａ１ｄ、Ａ２ｃ、Ａ２ｄ
に沿わせて、各側方リブ片１３Ａの辺１３ａをフランジ
１０ａの内側面１０ａ１、１０ａ２に沿わせ、側方リブ
片１３Ａがウェブ面１０ｂ１、１０ｂ２に対して略直角
になるように、それらの辺１３Ａｂをウェブ面１０ｂ
１、１０ｂ２に溶接し、それらの辺１３ａをＨ形鋼梁１
０のフランジの内側面１０ａ１、１０ａ２に溶接する。
く字状に配置した直角三角形の二つの側方リブ片１３Ａ
により側方リブ体１３が形成される。実施例３の鋼製梁
は、Ｈ形鋼梁１０の開口Ａ１の左側の隅部の近傍のウェ
ブの部分１０ｂ1、および開口Ａ２の右側の隅部の近傍
のウェブの部分１０ｂ2がＨ形鋼梁１０の成方向に切り
欠かれていないから、これらのウェブの部分１０ｂ1、
１０ｂ2は特に補強しなくても、必要な強度や耐力があ
り、鋼製梁の開口Ａ１、Ａ２の大きさを所望の大きさに
することができる。なお、図１７に示す直角三角形の側
方リブ片１３Ａの代りに、図１８に示す台形の直角な角
部に切欠き部１３Ｂｅのある側方リブ片１３Ｂや、図１
９に示す矩形の一つの隅部に切欠き部１３Ｃｅのある側
方リブ片１３Ｃを使うこともできる。Embodiment 3 of the present invention is shown in FIGS.
9 is shown. H-shaped steel beam 10, central long rib piece 11
And the configuration of the central short rib piece 12 and the central long and short rib pieces
The method of attaching 11 and 12 to the H-shaped steel beam 10 is the same as in Example 1.
Is the same. In Example 3, to the left of the opening A1
And the side rib body 13 arranged on the right side of the opening A2,
Consists of two same-shaped right-angled triangular side rib pieces 13A
It The side rib pieces 13A are made of steel plate and are shown in FIG.
The length of the short side 13Aa on either side of the right angle
The width b2Below is the other long side of the right angle 13A
b is the length L2Formed into a right triangle that is less than
The cutout portion 1 is provided at the corner formed by the side 13Ab and the short side 13Aa.
3Ae is formed. As shown in FIGS. 15 and 16.
As described above, both web surfaces 1 of the web 10b of the H-shaped steel beam 10
Portions and openings on the left side of the openings A1 of 0b1 and 10b2
Place the side rib pieces 13A on the right side of A2.
Then, the side 13b of each side rib piece 13A is separated by the distance x 2Leave
Sides A1c, A1d, A2c, A2d of each opening A1, A2
The side 13a of each side rib piece 13A along the
Side ribs along the inner side surfaces 10a1 and 10a2 of 10a
The piece 13A is substantially perpendicular to the web surfaces 10b1 and 10b2
The edges 13Ab of the web surface 10b
1 and 10b2 are welded to the sides 13a of the H-shaped steel beam 1
No. 0 flanges are welded to the inner surfaces 10a1 and 10a2.
Two right-sided triangular rib pieces 13A arranged in a V shape
Thereby, the lateral rib body 13 is formed. Steel beam of Example 3
Indicates a wafer near the left corner of the opening A1 of the H-shaped steel beam 10.
Bulb part 10b1, And near the right corner of the opening A2
Web portion 10b2Cut in the direction of the H-shaped steel beam 10
Since it is not missing, these web parts 10b1,
10b2Has the required strength and proof strength without any special reinforcement.
The size of the openings A1 and A2 of the steel beam to the desired size.
can do. The side of the right triangle shown in FIG.
Instead of the rib rib 13A, the trapezoidal right angle shown in FIG.
1B having a notch portion 13Be in the portion, and FIG.
The side with the cutout 13Ce in one corner of the rectangle shown in FIG.
The rib piece 13C can also be used.
【０００１４】この発明の実施例４が図２０および図２
１に示されている。実施例４は実施例２の変形であり、
鋼製梁１０と中央長リブ片１１との関係が実施例２と同
じで、中央長リブ片１１と平行に、二つの直角三角形の
側方リブ片１３Ａを配置する例である。実施例４では中
央短リブ片１２が省かれている。Ｈ形鋼梁１０の一方の
ウェブ面１０ｂ１の開口Ａ１の左側方の部分および開口
Ａ２の右側方の部分に、二つの開口Ａ１、Ａ２の間に梁
の長手方向に対して略４５゜の角度をなして配置した中
央長リブ片１１と略平行に、それぞれ直角三角形の側方
リブ片１３Ａを配し、一方の側方リブ片１３Ａの辺１３
Ａｂを間隔ｘ2をおいて開口Ａ１の辺Ａ１ｃに沿わせ、
他方の側方リブ片１３Ａの辺１３Ａｂを間隔ｘ2をおい
て開口Ａ２の辺Ａ２ｄに沿わせ、両側方リブ片１３Ａの
辺１３Ａａをフランジ１０ａの内側面１０ａ１に沿わせ
て、両側方リブ片１３Ａがウェブ面１０ｂ１に対して略
直角になるように、それらの辺１３Ａｂをウェブ面１０
ｂ１に溶接し、それらの辺１３ａをフランジ１０ａの内
側面１０ａ１に溶接する。また、Ｈ形鋼梁１０の他方の
ウェブ面１０ｂ２の開口Ａ１の左側方の部分および開口
Ａ２の右側方の部分に、二つの開口Ａ１、Ａ２の間に梁
の長手方向に対して略４５゜の角度をなして配置した中
央長リブ片１１と略平行に、それぞれ直角三角形の側方
リブ片１３Ａを配し、一方の側方リブ片１３Ａの辺１３
Ａｂを開口Ａ１の辺Ａ１ｄに沿わせ、他方の側方リブ片
１３Ａの辺１３Ａｂを開口Ａ２の辺Ａ２ｃに沿わせ、両
側方リブ片１３Ａの辺１３Ａａをフランジ１０ａの内側
面１０ａ２に沿わせて、両側方リブ片１３Ａがウェブ面
１０ｂ２に対して略直角になるように、それらの辺１３
Ａｂをウェブ面１０ｂ２に溶接し、それらの辺１３Ａａ
をフランジ１０ａの内側面１０ａ２に溶接する。Embodiment 4 of the present invention is shown in FIGS.
1 is shown. Example 4 is a modification of Example 2,
This is an example in which the relationship between the steel beam 10 and the central long rib piece 11 is the same as that of the second embodiment, and two right-angled triangular side rib pieces 13A are arranged in parallel with the central long rib piece 11. In Example 4, the central short rib piece 12 is omitted. An angle of about 45 ° with respect to the longitudinal direction of the beam is provided between the two openings A1 and A2 in the left side portion of the opening A1 and the right side portion of the opening A2 of the one web surface 10b1 of the H-shaped steel beam 10. Side ribs 13A of right-angled triangles are arranged substantially in parallel with the central long ribs 11 arranged so as to form the side 13 of one side rib 13A.
Ab is placed along the side A1c of the opening A1 at a distance x 2 .
The side 13Ab of the other side rib piece 13A is arranged along the side A2d of the opening A2 at a distance x 2 and the side 13Aa of the side rib piece 13A is arranged along the inner side surface 10a1 of the flange 10a. The edges 13Ab of the web surface 10b1 are aligned so that the edges 13A are substantially perpendicular to the web surface 10b1.
It welds to b1, and those sides 13a are welded to the inner surface 10a1 of the flange 10a. Further, at the left side portion of the opening A1 and the right side portion of the opening A2 of the other web surface 10b2 of the H-shaped steel beam 10, between the two openings A1 and A2, approximately 45 ° with respect to the longitudinal direction of the beam. Side rib pieces 13A each having a right-angled triangle are arranged substantially parallel to the central long rib pieces 11 arranged at an angle of, and the side 13 of one side rib piece 13A is arranged.
Ab is arranged along side A1d of opening A1, side 13Ab of the other side rib piece 13A is arranged along side A2c of opening A2, and side 13Aa of both side rib pieces 13A is arranged along inner side surface 10a2 of flange 10a. , The side ribs 13A so that the ribs 13A on both sides are substantially perpendicular to the web surface 10b2.
Weld the Abs to the web surface 10b2, their edges 13Aa
Is welded to the inner surface 10a2 of the flange 10a.
【０００１５】この発明の実施例５が図２２ないし図２
５に示されている。実施例５は実施例３の変形であり、
側方リブ片１３Ａの鋼製梁１０への取付方が実施例３と
同じで、Ｘ字状の中央リブ体として、同型の４枚の台形
の中央短リブ片１２Ａを使う例である。中央短リブ片１
２Ａは、鋼板製で、図２４に示すように、平行な二つの
辺１２Ａａ、１２Ａｂ、これらの辺と直角交わる一つの
辺１２Ａｃ、および前記辺１２Ａａ、１２Ａｂに対して
鈍角をなして交わる一つの辺１２Ａｄからなる台形に形
成され、辺１２Ａａと辺１２Ａｃとが交わる角部に切欠
き部１２Ａｅが形成されている。Ｈ形鋼梁１０の両側の
１０ｂ１、１０ｂ２の開口Ａ１と開口Ａ２との間のウェ
ブ面１０ｂ１、１０ｂ２に、それぞれ４枚の中央短リブ
片１２Ａを配し、各中央短リブ片１２Ａの辺１２Ａａを
開口Ａ１、Ａ２の辺Ａ１ａ、Ａ１ｂ、Ａ２ａ、Ａ２ｂに
沿わせ、かつそれらの辺１２Ａｃをフランジ１０ａの内
側面１０ａ１、１０ａ２に沿わせ、各中央短リブ片１２
Ａがウェブ面１０ｂ１、１０ｂ２に対して略直角になる
ように、各中央短リブ片１２Ａの辺１２Ａａをウェブ面
１０ｂ１、１０ｂ２に溶接し、各中央短リブ片１２Ａの
辺１２ＡｃをＨ形鋼梁１０のフランジの内側面１０ａ
１、１０ａ２に溶接する。実施例５のものは、各中央短
リブ片１２Ａの辺１２Ａｄを互いに溶接しないから、溶
接作業が簡単になる。また、Ｈ形鋼梁１０の開口Ａ１と
開口Ａ２との間のウェブの中央の部分１０ｂ3はＨ形鋼
梁１０の成方向に切り欠かれていないから、前記ウェブ
部分１０ｂ3は特に補強しなくても、必要な強度や耐力
があり、所望の大口径の開口Ａ１、Ａ２のある鋼製梁を
得ることができる。なお、台形の中央短リブ片１２Ａの
代りに、図２５に示す直角三角形の中央短リブ片１２Ｂ
を使うことができる。中央短リブ片１２Ｂは、鋼板製で
あり、直角をはさむ一方の短辺１２Ｂａの長さが前記幅
ｂ2以下であり、直角をはさむ他方の長辺１２Ｂｂが前
記長さＬ2以下である直角三角形に形成され、長辺１２
Ｂｂと短辺１２Ｂａからなる角部に切欠き部１２Ｂｅが
形成されている。Embodiment 5 of the present invention is shown in FIGS.
5 is shown. Example 5 is a modification of Example 3,
The method of attaching the side rib pieces 13A to the steel beam 10 is the same as that of the third embodiment, and four trapezoidal central short rib pieces 12A of the same type are used as the X-shaped central rib body. Central short rib piece 1
2A is made of a steel plate, and as shown in FIG. 24, two parallel sides 12Aa, 12Ab, one side 12Ac intersecting these sides at right angles, and one side intersecting the sides 12Aa, 12Ab at an obtuse angle. The side surface 12Ad is formed in a trapezoidal shape, and a cutout portion 12Ae is formed at a corner where the side surface 12Aa and the side surface 12Ac intersect. Four central short rib pieces 12A are arranged on each of the web surfaces 10b1 and 10b2 between the openings A1 and A2 of both sides 10b1 and 10b2 of the H-shaped steel beam 10 and the side 12Aa of each central short rib piece 12A. Along the sides A1a, A1b, A2a, A2b of the openings A1, A2, and those sides 12Ac along the inner side surfaces 10a1, 10a2 of the flange 10a.
The side 12Aa of each central short rib piece 12A is welded to the web surface 10b1, 10b2 so that A is substantially perpendicular to the web surfaces 10b1 and 10b2, and the side 12Ac of each central short rib piece 12A is formed into an H-shaped steel beam. Inner surface 10a of flange 10
Weld to 1, 10a2. In the fifth embodiment, since the sides 12Ad of the central short rib pieces 12A are not welded to each other, the welding work is simplified. Further, since the central portion 10b 3 of the web between the opening A1 and the opening A2 of the H-shaped steel beam 10 is not cut out in the normal direction of the H-shaped steel beam 10, the web portion 10b 3 is particularly reinforced. Even without it, it is possible to obtain a steel beam having necessary strength and proof stress and having the desired large diameter openings A1 and A2. Note that, instead of the trapezoidal central short rib piece 12A, the right triangular triangular short rib piece 12B shown in FIG. 25 is used.
Can be used. The central short rib piece 12B is made of a steel plate, and the length of one short side 12Ba sandwiching the right angle is the width b 2 or less, and the other long side 12Bb sandwiching the right angle is the length L 2 or less. Triangular shape, long side 12
A cutout portion 12Be is formed at a corner portion composed of Bb and the short side 12Ba.
【０００１６】この発明の実施例６が図２６に示されて
いる。幅ｂ1で高さｈのＨ形鋼梁１０のウェブ１０ｂの
部分の所望位置に、互いに近接して二つの円形の開口Ａ
１、Ａ２を形成する。二つの円形の開口の上下の開口縁
とフランジ１０ａの内側面と間にフランジ１０ａとウェ
ブ１０ｂとの連結部に形成された円弧状部が残るよう
に、それらの間に間隔を空ける。Ｈ形鋼梁１０の両側の
ウェブ面１０ｂ１、１０ｂ２の二つの開口Ａ１、Ａ２の
間の部分に、中央長リブ片１１を梁の長手方向に対して
略４５゜傾斜させて配し、かつ中央短リブ片１２を中央
長リブ片１１に対して直角に配し、各中央長短リブ片１
１、１２を、実施例１の同様に、ウェブ面１０ｂ１、１
０ｂ２およびフランジの内側面１０ａ１、１０ａ２に溶
接し、中央短リブ片１２の短辺１２ｂを中央長リブ片１
１の中央の両側部に溶接したものである。実施例６のも
のは、二つの開口Ａ１、Ａ２が円形であるから、開口Ａ
１の左側方の部分および開口Ａ２の右側方の部分を側方
リブ体により補強しなくとも、相当な荷重に耐えること
ができる。そのため、大きな強度、耐力および繰り返し
荷重における耐力維持が要求されない小梁等に使うこと
ができる。この発明の実施例７が図２７に示されてい
る。実施例７は実施例１の四角形の開口を円形の開口Ａ
１、Ａ２に代えただけのものである。この実施例７と同
様に、実施例２ないし５のものにおいても、四角形の開
口を円形の開口に代えることができる。これらの場合
は、円形の開口の直径を、たとえば、四角形の開口の内
接円の直径と略等しくするとよい。The sixth embodiment of the present invention is shown in FIG. Two circular openings A close to each other at the desired position in the portion of the web 10b of the H-shaped steel beam 10 of width b 1 and height h.
1 and A2 are formed. A space is provided between the upper and lower opening edges of the two circular openings and the inner surface of the flange 10a so that an arcuate portion formed at the connecting portion between the flange 10a and the web 10b remains therebetween. A central long rib piece 11 is arranged at an angle of approximately 45 ° with respect to the longitudinal direction of the beam in a portion between the two openings A1 and A2 in the web surfaces 10b1 and 10b2 on both sides of the H-shaped steel beam 10, and The short rib pieces 12 are arranged at right angles to the central long rib pieces 11, and each central long rib piece 1
1, 12 in the same manner as in the first embodiment, the web surface 10b1, 1
0b2 and the inner side surfaces 10a1 and 10a2 of the flange, and the short side 12b of the central short rib piece 12 is joined to the central long rib piece 1.
It was welded to both sides of the center of 1. In the sixth embodiment, since the two openings A1 and A2 are circular, the opening A
It is possible to withstand a considerable load without reinforcing the left side portion of 1 and the right side portion of the opening A2 by the side rib body. Therefore, it can be used for a beam or the like which is not required to have large strength, proof stress and proof stress under repeated load. Embodiment 7 of the present invention is shown in FIG. In the seventh embodiment, the square opening of the first embodiment is replaced by the circular opening A.
1 and A2 only. Similar to the seventh embodiment, also in the second to fifth embodiments, the square opening can be replaced with the circular opening. In these cases, the diameter of the circular opening may be substantially equal to the diameter of the inscribed circle of the square opening.
【０００１７】[00017]
【発明の効果】この発明は、ウェブの二つの開口の間の
部分を一側の略Ｘ字状の中央リブ体と他側の略Ｘ字状の
中央リブ体により挾んで補強し、ウェブの二つの開口の
外側方の部分を一側の側方リブ体と他側の側方リブ体と
により挾んで補強したから、十分な剛性、耐力、変形能
力等のある大口径の開口のある梁を安価で提供できる。
また、この発明は、二つの開口の周囲のウェブの部分
に、略Ｘ字状の中央リブ体や側方リブ体を設けたから、
中央リブ体や側方リブ体のトラス効果により、開口のあ
る部分の梁が補強され、開口の径を梁成の１／２以上に
しても、無開口梁と同等の剛性、耐力等のある開口のあ
る梁を容易に得ることができる。この発明は、ウェブの
一側の二つの開口の間の部分に、中央長リブ片を、梁の
長手方向に対して略４５゜傾斜させ、かつウェブ面に対
して略直角に配置して、ウェブ面およびフランジの内側
面に溶接し、二つの中央短リブ片を中央長リブ片に対し
て略直角に、かつウェブ面に対して略直角に配置して、
ウェブ面、フランジの内側面および中央長リブ片に溶接
して、略Ｘ字状の中央リブ体を形成し、ウェブの他側の
二つの開口の間の部分に、中央長リブ片を、梁の長手方
向に対して前記一側の中央長リブ片の傾斜方向と反対の
方向に略４５゜傾斜させ、かつ他側のウェブ面に対して
略直角に配置して、他側のウェブ面およびフランジの内
側面に溶接し、中央長リブ片の中央部からフランジの内
側にわって延びる一対の中央短リブ片を、前記中央長リ
ブ片に対して略直角に、かつウェブ面に対して略直角に
配置して、ウェブ面、フランジの内側面および中央長リ
ブ片にそれぞれ溶接して製造するものであるから、溶接
量の減少、溶接の容易化、工程の単純化等により、施工
性、生産性の向上を図ることができる。According to the present invention, the portion of the web between the two openings is sandwiched between the substantially X-shaped central rib body on one side and the substantially X-shaped central rib body on the other side to reinforce the web. A beam with a large diameter opening that has sufficient rigidity, proof strength, and deformability, etc., because the outer portions of the two openings are sandwiched and reinforced by one side rib body and the other side rib body. Can be provided at low cost.
Further, according to the present invention, since the substantially X-shaped central rib body and the side rib body are provided in the web portion around the two openings,
Due to the truss effect of the central rib body and the side rib body, the beam in the portion with the opening is reinforced, and even if the diameter of the opening is 1/2 or more of the beam formation, the rigidity and proof strength are the same as those of the non-opening beam. Beams with openings can be easily obtained. According to the present invention, a central long rib piece is inclined at an angle of about 45 ° with respect to the longitudinal direction of the beam and is arranged at a right angle to the web surface in a portion between two openings on one side of the web. Welded to the web surface and the inner surface of the flange, the two central short rib pieces are arranged substantially at right angles to the central long rib pieces, and at substantially right angles to the web surface,
The web surface, the inner surface of the flange, and the central long rib piece are welded to form a substantially X-shaped central rib body, and the central long rib piece is provided between the two openings on the other side of the web. With respect to the longitudinal direction of the one side, is inclined at an angle of about 45 ° in the direction opposite to the direction of inclination of the central long rib piece, and is arranged at a substantially right angle to the web surface on the other side, and A pair of central short rib pieces, which are welded to the inner surface of the flange and extend from the central portion of the central long rib piece toward the inside of the flange, are substantially perpendicular to the central long rib piece, and are substantially perpendicular to the web surface. Since it is manufactured by arranging at a right angle and welding it to the web surface, the inner surface of the flange and the central long rib piece respectively, it is possible to reduce the amount of welding, facilitate the welding, simplify the process, etc. Productivity can be improved.
【図１】本発明の実施例１に使う四角形の開口を形成し
た断面Ｈ字形の鋼製梁の正面図FIG. 1 is a front view of a steel beam having an H-shaped cross section and having a rectangular opening used in a first embodiment of the present invention.
【図２】図１のものをそのＡ−Ａ線で断面した側面図FIG. 2 is a side view of FIG. 1 taken along the line AA.
【図３】第１実施例に使う中央長リブ片の平面図FIG. 3 is a plan view of a central long rib piece used in the first embodiment.
【図４】第１実施例に使う中央短リブ片の平面図FIG. 4 is a plan view of a central short rib piece used in the first embodiment.
【図５】第１実施例に使う側方リブ片の素材の平面図FIG. 5 is a plan view of a material of the side rib piece used in the first embodiment.
【図６】第１実施例に使う側方リブ片の正面図FIG. 6 is a front view of a side rib piece used in the first embodiment.
【図７】実施例１の四角形の開口を備えた鋼製梁の正面
図FIG. 7 is a front view of a steel beam having a square opening according to the first embodiment.
【図８】図７のものをそのＢ−Ｂ線で断面した側面図FIG. 8 is a side view of FIG. 7 taken along the line BB.
【図９】図８の要部を拡大した断面図9 is an enlarged cross-sectional view of the main part of FIG.
【図１０】図７のものをそのＣ−Ｃ線で断面した側面図FIG. 10 is a side view of FIG. 7 taken along the line C-C.
【図１１】図７のものをそのＤ−Ｄ線で断面した断面図FIG. 11 is a cross-sectional view of FIG. 7 taken along the line DD.
【図１２】実施例１の四角形の開口を備えた鋼製梁の力
学的性能を示す図FIG. 12 is a diagram showing mechanical performance of a steel beam having a square opening of Example 1.
【図１３】実施例２の四角形の開口を備えた鋼製梁の正
面図FIG. 13 is a front view of a steel beam having a square opening according to the second embodiment.
【図１４】図１３のものをそのＥ−Ｅ線で断面した側面
図FIG. 14 is a side view of FIG. 13 taken along the line EE.
【図１５】実施例３の四角形の開口を備えた鋼製梁の正
面図FIG. 15 is a front view of a steel beam having a square opening according to the third embodiment.
【図１６】図１５のものをそのＦ−Ｆ線で断面した側面
図FIG. 16 is a side view of FIG. 15 taken along the line F-F.
【図１７】実施例３に使う直角三角形の側方リブ片の平
面図FIG. 17 is a plan view of a right triangle side rib piece used in Example 3;
【図１８】実施例３に使う台形の側方リブ片の平面図FIG. 18 is a plan view of a trapezoidal side rib piece used in Example 3;
【図１９】実施例３に使う矩形の側方リブ片の平面図FIG. 19 is a plan view of a rectangular side rib piece used in Example 3;
【図２０】実施例４の四角形の開口を備えた鋼製梁の正
面図FIG. 20 is a front view of a steel beam having a square opening according to the fourth embodiment.
【図２１】図２０のものをそのＧ−Ｇ線で断面した側面
図FIG. 21 is a side view of FIG. 20 taken along the line GG.
【図２２】実施例５の四角形の開口を備えた鋼製梁の正
面図FIG. 22 is a front view of a steel beam having a square opening according to the fifth embodiment.
【図２３】図２２のものをそのＨ−Ｈ線で断面した側面
図FIG. 23 is a side view of FIG. 22 taken along line HH.
【図２４】実施例５に使う台形の中央短リブ片の平面図FIG. 24 is a plan view of a trapezoidal center short rib piece used in Example 5;
【図２５】実施例５に使う直角三角の中央短リブ片の平
面図FIG. 25 is a plan view of a right-angled triangular short central rib piece used in Example 5;
【図２６】実施例６の円形の開口を備えた鋼製梁の正面
図FIG. 26 is a front view of a steel beam having a circular opening according to the sixth embodiment.
【図２７】実施例７の円形の開口を備えた鋼製梁の正面
図FIG. 27 is a front view of a steel beam having a circular opening according to the seventh embodiment.
【図２８】従来の円形の開口を備えた鋼製梁の正面図FIG. 28 is a front view of a steel beam having a conventional circular opening.
【図２９】図２８のものをそのＪ−Ｊ線で断面した側面
図FIG. 29 is a side view of FIG. 28 taken along the line JJ.
【図３０】従来の他の円形の開口を備えた鋼製梁の正面
図FIG. 30 is a front view of a steel beam having another conventional circular opening.
【図３１】図２９のものをそのＫ−Ｋ線で断面した側面
図FIG. 31 is a side view of FIG. 29 taken along the line KK.
１０ Ｈ形鋼梁 １０ａ フランジ １０ａ１ フランジの内側面 １０ａ２ フランジの内側面 １０ｂ ウェブ １０ｂ１ 一側のウェブ面 １０ｂ２ 他側のウェブ面 １１ 中央長リブ片 １１ｅ 切欠き部 １２ 中央短リブ片 １２ｅ 切り欠き部 １２Ａ 台形の中央短リブ片 １３ 側方リブ片 １３ｅ 切欠き部 １３Ａ 直角三角形の側方リブ片 Ａ１ 開口 Ａ２ 開口 10 H-shaped steel beam 10a Flange 10a1 Flange inner surface 10a2 Flange inner surface 10b Web 10b1 One side web surface 10b2 Other side web surface 11 Central long rib piece 11e Notch portion 12 Central short rib piece 12e Notch portion 12A Trapezoidal center short rib piece 13 Side rib piece 13e Notch 13A Right triangle side rib piece A1 Opening A2 Opening
───────────────────────────────────────────────────── フロントページの続き (72)発明者 野上 邦宏 東京都中央区銀座八丁目21番１号 竹中工 務店 東京本店内 (72)発明者 青山 伸介 東京都中央区銀座八丁目21番１号 竹中工 務店 東京本店内 (72)発明者 木村 衛 東京都江東区南砂二丁目５番14号 竹中工 務店 技術研究所内 (72)発明者 金子 洋文 東京都江東区南砂二丁目５番14号 竹中工 務店 技術研究所内 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Kunihiro Nogami 8-21-1 Ginza, Chuo-ku, Tokyo Takenaka Corporation Tokyo Main Store (72) Inventor Shinsuke Aoyama 8-21-1 Ginza, Chuo-ku, Tokyo Takenaka Corporation Tokyo Main Store (72) Inventor Mamoru Kimura 2-5-14 Minamisuna, Koto-ku, Tokyo Takenaka Corporation Technical Research Institute (72) Inventor Hiroshi Kaneko 2-5-14 Minamisuna, Koto-ku, Tokyo Takenaka Corporation Technical Research Institute
Claims (13)
いて、ウェブに二つの開口が近接して形成され、ウェブ
の一側の二つの開口の間の部分に、略Ｘ字状の中央リブ
体が設けられ、略Ｘ字状の中央リブ体の４方向に延びる
中央リブ片が梁の長手方向に対して略４５゜傾斜し、フ
ランジの内側面にわたって延在し、ウェブ面に対して略
直角に形成され、ウェブの他側の二つの開口の間の部分
に、略Ｘ字状の中央リブ体が設けられ、略Ｘ字状の中央
リブ体の４方向に延びる中央リブ片が梁の長手方向に対
して略４５゜傾斜し、フランジの内側面にわたって延在
し、ウェブ面に対して略直角に形成され、ウェブの二つ
の開口の間の部分が一側の略Ｘ字状の中央リブ体と他側
の略Ｘ字状の中央リブ体により挾まれていることを特徴
とする大口径の開口のある梁。1. A beam comprising a web and a pair of flanges, wherein two openings are formed close to the web, and a substantially X-shaped central rib body is formed in a portion between the two openings on one side of the web. Is provided, the central rib piece extending in four directions of the substantially X-shaped central rib body is inclined at an angle of approximately 45 ° with respect to the longitudinal direction of the beam, extends over the inner surface of the flange, and is substantially perpendicular to the web surface. A substantially X-shaped central rib body is provided in a portion between the two openings on the other side of the web, and the central rib piece extending in four directions of the substantially X-shaped central rib body is the longitudinal direction of the beam. Inclined at about 45 ° with respect to the direction, extending over the inner surface of the flange, formed substantially at right angles to the web surface, and the portion between the two openings of the web has a substantially X-shaped central rib on one side. A large-diameter opening characterized by being sandwiched between the body and a substantially X-shaped central rib body on the other side. It beams with.
いて、ウェブに二つの開口が近接して形成され、ウェブ
の一側の二つの開口の間の部分に、略Ｘ字状の中央リブ
体が設けられ、Ｘ字状の中央リブ体の４方向に延びる中
央リブ片が梁の長手方向に対して略４５゜傾斜し、フラ
ンジの内側面にわたって延在して、一側のウェブ面に対
して略直角に形成され、ウェブの一側の二つの開口の外
側方の部分にそれぞれ側方リブ体が設けられ、側方リブ
体を構成する側方リブ片が梁の長手方向に対して略４５
゜傾斜して形成され、ウェブの他側の二つの開口の間の
部分に、略Ｘ字形の中央リブ体が設けられ、Ｘ字形の中
央リブ体の４方向に延びる各リブ片が梁の長手方向に対
して略４５゜傾斜し、フランジの内側面にわたって延在
して、ウェブ面に対して略直角に形成され、ウェブの他
側の二つの開口の外側方の部分にそれぞれ側方リブ体が
設けられ、側方リブ体を構成する側方リブ片が梁の長手
方向に対して略４５゜傾斜して形成され、ウェブの二つ
の開口の間の部分が一側の略Ｘ字状の中央リブ体と他側
の略Ｘ字状の中央リブ体とにより挾まれ、ウェブの二つ
の開口の外側方の部分が一側の側方リブ体と他側の側方
リブ体とにより挾まれていることを特徴とする大口径の
開口のある梁。2. A beam comprising a web and a pair of flanges, wherein two openings are formed close to each other in the web, and a substantially X-shaped central rib body is provided at a portion between the two openings on one side of the web. Is provided, the central rib piece extending in four directions of the X-shaped central rib body is inclined at approximately 45 ° with respect to the longitudinal direction of the beam, extends over the inner surface of the flange, and is opposed to the web surface on one side. Side ribs are provided on the outer sides of the two openings on one side of the web, and the side rib pieces that form the side ribs are formed substantially in the longitudinal direction of the beam. 45
A substantially X-shaped central rib body is provided in a portion between the two openings on the other side of the web that is formed to be inclined, and each rib piece extending in four directions of the X-shaped central rib body is the longitudinal direction of the beam. Is formed at an angle of approximately 45 ° with respect to the direction, extends over the inner surface of the flange, and is formed substantially at a right angle to the web surface. Lateral rib members are formed on the outer sides of the two openings on the other side of the web. Is provided, the side rib pieces forming the side rib body are formed to be inclined at about 45 ° with respect to the longitudinal direction of the beam, and the portion between the two openings of the web has a substantially X shape on one side. It is sandwiched by the central rib body and the substantially X-shaped central rib body on the other side, and the outer portions of the two openings of the web are sandwiched by the one side rib body and the other side rib body. A beam with a large diameter opening.
と該中央長リブ片の中央部の両側にそれぞれ略直角に結
合される中央短リブ片とで構成されることを特徴とする
請求項１または２記載の大口径の開口のある梁。3. An X-shaped central rib body is composed of one central long rib piece and central short rib pieces joined to both sides of the central portion of the central long rib piece at substantially right angles. The beam with an opening having a large diameter according to claim 1 or 2.
て間隔を空けてＸ字状に配した四つの中央短リブ片によ
り構成されていることを特徴とする請求項１または２記
載の大口径の開口のある梁。4. The X-shaped central rib body is composed of four central short rib pieces arranged in an X-shape at intervals in the center of the X-shape. Beams with large diameter openings as described.
いて、ウェブに二つの開口が近接して形成され、ウェブ
の一側の二つの開口の間の部分に、梁の長手方向に対し
て略４５゜傾斜させて中央リブ体が設けられ、この一側
の中央リブ体がフランジの間に延在し、かつウェブ面に
対して略直角に形成され、ウェブの他側の二つの開口の
間の部分に、梁の長手方向に対して前記の一側の中央リ
ブ体の傾斜方向と反対の方向に略４５゜傾斜させて中央
リブ体が設けられ、この他側の中央リブ体がフランジの
間に延在し、かつウェブ面に対して略直角に形成され、
ウェブの二つの開口の間の部分が一側の中央リブ体と他
側の中央リブ体で挾まれ、一側の中央リブ体と他側の中
央リブ体とが略Ｘ字状に交差して配置されていることを
特徴とする大口径の開口のある梁。5. A beam comprising a web and a pair of flanges, wherein two openings are formed close to each other in the web, and a portion between the two openings on one side of the web is formed substantially in the longitudinal direction of the beam. A central rib body is provided at an angle of 45 °, the central rib body on one side extends between the flanges, and is formed substantially at right angles to the web surface, and between the two openings on the other side of the web. A central rib body is provided at a portion of the center rib body inclined by about 45 ° in a direction opposite to the slanting direction of the central rib body on the one side with respect to the longitudinal direction of the beam, and the central rib body on the other side is formed of the flange. Is formed at a substantially right angle to the web surface,
The portion between the two openings of the web is sandwiched by the central rib body on one side and the central rib body on the other side, and the central rib body on one side and the central rib body on the other side intersect in a substantially X shape. A beam with a large aperture that is characterized by being placed.
ブの所望位置に二つの開口が近接して形成され、ウェブ
の一側の二つの開口の間の部分に、梁の長手方向に対し
て略４５゜傾斜させて中央リブ体が設けられ、ウェブの
他側の二つの開口の間の部分に、梁の長手方向に対して
前記の一側の中央リブ体の傾斜方向と反対の方向に略４
５゜傾斜させて中央リブ体が設けられ、ウェブの二つの
開口の間の部分が一側の中央リブ体と他側の中央リブ体
で挾まれ、一側の中央リブ体と他側の中央リブ体とが略
Ｘ字状に交差して配置されている大口径の開口のある梁
において、ウェブの一側の二つの開口の外側方の部分に
それぞれ側方リブ体が設けられ、これらの側方リブ体が
一側の中央リブ体と略平行に形成され、ウェブの他側の
二つの開口の外側方の部分にもそれぞれ側方リブ体が設
けられ、これらの側方リブ体が他側の中央リブ体と略平
行に形成されていることを特徴とする大口径の開口のあ
る梁。6. A web and a pair of flanges, wherein two openings are formed close to each other at a desired position of the web, and a portion between two openings on one side of the web is formed in a longitudinal direction of the beam. A central rib body is provided with an inclination of about 45 °, and is provided in a portion between two openings on the other side of the web in a direction opposite to the inclination direction of the central rib body on the one side with respect to the longitudinal direction of the beam. About 4
A central rib body is provided with an inclination of 5 °, and the part between the two openings of the web is sandwiched between the central rib body on one side and the central rib body on the other side, and the central rib body on one side and the center rib on the other side. In a beam with an opening having a large diameter, which is arranged so as to intersect with a rib body in a substantially X-shape, side rib bodies are respectively provided on the outer side portions of the two openings on one side of the web. The side rib body is formed substantially parallel to the central rib body on one side, and the side rib bodies are also provided on the outer side portions of the two openings on the other side of the web. A beam with an opening having a large diameter characterized by being formed substantially parallel to the central rib body on the side.
ブの所望位置に二つの開口が近接して形成され、ウェブ
の一側の二つの開口の間の部分に、梁の長手方向に対し
て略４５゜傾斜させて中央リブ体が設けられ、ウェブの
他側の二つの開口の間の部分に、梁の長手方向に対して
前記の一側の中央リブ体の傾斜方向と反対の方向に略４
５゜傾斜させて中央リブ体が設けられ、ウェブの二つの
開口の間の部分が一側の中央リブ体と他側の中央リブ体
で挾まれ、一側の中央リブ体と他側の中央リブ体とが略
Ｘ字状に交差して配置されている大口径の開口のある梁
において、ウェブの一側の一方の開口の外側方の部分に
く字状の側方リブ体が設けられ、ウェブの他側の他方の
開口の外側方の部分にく字状の側方リブ体が設けられ、
これらのく字状の側方リブ体のく字の辺が梁の長手方向
に対して略４５゜傾斜していることを特徴とする大口径
の開口のある梁。7. A web and a pair of flanges, wherein two openings are formed close to each other at a desired position of the web, and a portion between the two openings on one side of the web is formed in the longitudinal direction of the beam. A central rib body is provided with an inclination of about 45 °, and is provided in a portion between two openings on the other side of the web in a direction opposite to the inclination direction of the central rib body on the one side with respect to the longitudinal direction of the beam. About 4
A central rib body is provided with an inclination of 5 °, and the part between the two openings of the web is sandwiched between the central rib body on one side and the central rib body on the other side, and the central rib body on one side and the center rib on the other side. In a beam with an opening having a large diameter, which is arranged so as to intersect the rib body in a substantially X shape, a V-shaped lateral rib body is provided at a portion outside one opening on one side of the web. , A V-shaped side rib body is provided on the outer side of the other opening on the other side of the web.
A beam with an opening having a large diameter, characterized in that the sides of the V-shape of the V-shaped lateral rib body are inclined by approximately 45 ° with respect to the longitudinal direction of the beam.
れていることを特徴とする請求項２、３、４および７の
いずれか一つの項記載の大口径の開口のある梁。8. The beam with an opening having a large diameter according to claim 2, 3, 4 or 7, wherein the lateral rib body is formed of a plate-shaped body or a rod-shaped body. .
く字状に配置して側方リブ体が形成されることを特徴と
する請求項２、３、４および７のいずれか一つの項記載
の大口径の開口のある梁。9. The side rib body is formed by arranging two short rib pieces in a V shape with a gap between them to form a lateral rib body. A beam with a large-diameter opening as described in section 3.
の部分に二つの大口径の開口を近接して形成した鋼製梁
の製造法において、ウェブの一側の二つの開口の間の部
分に、フランジの間の略全域にわたって延在する中央長
リブ片を、梁の長手方向に対して略４５゜傾斜させ、か
つウェブ面に対して略直角に配置して、ウェブ面および
フランジの内側面に溶接し、中央長リブ片の中央部から
フランジの内側面にわって延びる二つの中央短リブ片
を、前記中央長リブ片に対して略直角に、かつウェブ面
に対して略直角に配置して、ウェブ面、フランジの内側
面および中央長リブ片に溶接して、略Ｘ字状の中央リブ
体を形成し、ウェブの他側の二つの開口の間の部分に、
フランジの間の略全域にわたって延在する中央長リブ片
を、梁の長手方向に対して略４５゜傾斜させ、かつウェ
ブ面に対して略直角に配置して、ウェブ面およびフラン
ジの内側面に溶接し、中央長リブ片の中央部からフラン
ジの内側にわって延びる一対の中央短リブ片を、前記中
央長リブ片に対して略直角に、かつウェブ面に対して略
直角に配置して、ウェブ面、フランジの内側面および中
央長リブ片にそれぞれ溶接することを特徴とする大口径
の開口のある鋼製梁の製造法。10. A method of manufacturing a steel beam comprising a web and a pair of flanges, wherein two large-diameter openings are formed close to each other in a portion of the web, in a portion between two openings on one side of the web. , The central long rib pieces extending over substantially the entire area between the flanges are arranged at an angle of about 45 ° with respect to the longitudinal direction of the beam and are arranged substantially at right angles to the web surface, and the web surface and the inner surface of the flange The two central short rib pieces, which are welded to each other and extend from the central portion of the central long rib piece over the inner surface of the flange, are arranged substantially at right angles to the central long rib pieces and substantially at right angles to the web surface. Then, the web surface, the inner surface of the flange, and the central long rib piece are welded to form a substantially X-shaped central rib body, and in the portion between the two openings on the other side of the web,
Center long rib pieces extending over almost the entire area between the flanges are arranged at an angle of about 45 ° with respect to the longitudinal direction of the beam, and are arranged substantially at right angles to the web surface so that they are attached to the web surface and the inner surface of the flange. A pair of central short rib pieces, which are welded and extend from the central portion of the central long rib piece to the inside of the flange, are arranged substantially at right angles to the central long rib pieces and at substantially right angles to the web surface. , A web surface, an inner surface of a flange, and a central long rib piece are welded to a steel beam having a large-diameter opening, respectively.
部分に対向する中央長リブ片および中央短リブ片の角部
に切欠き部を形成したことを特徴とする請求項１０記載
の大口径の開口のある鋼製梁の製造法。11. A large aperture according to claim 10, wherein notches are formed at corners of the central long rib piece and the central short rib piece facing the arcuate portion of the connecting portion of the web and the flange. Method for manufacturing steel beams with openings.
の部分に二つの大口径の開口を近接して形成し、ウェブ
の二つの開口の間の部分の両側に略Ｘ字状の中央リブ体
を結合し、二つの開口の間のウェブの部分を一対の略Ｘ
字状の中央リブ体で挾んで補強した鋼製梁の製造法にお
いて、ウェブの一側の二つの開口の外側方の部分にそれ
ぞれ側方リブ体を配し、側方リブ体を構成する側方リブ
片を梁の長手方向に対して略４５゜傾斜させ、ウェブ面
やフランジの内側面に溶接し、ウェブの他側の二つの開
口の外側方の部分にそれぞれ側方リブ体を配し、側方リ
ブ体を構成する側方リブ片を梁の長手方向に対して略４
５゜傾斜させ、ウェブ面やフランジの内側面に溶接する
ことを特徴とする大口径の開口のある鋼製梁の製造法。12. A central rib body having a web and a pair of flanges, wherein two large-diameter openings are formed adjacent to each other in a portion of the web, and a substantially X-shaped central rib body is provided on both sides of a portion between the two openings of the web. And connect the portion of the web between the two openings with a pair of approximately X
In a method of manufacturing a steel beam sandwiched by a character-shaped central rib body, a side rib body is arranged on each of the outer side portions of the two openings on one side of the web, and the side rib body is formed. The side rib pieces are inclined at about 45 ° with respect to the longitudinal direction of the beam, welded to the web surface and the inner surface of the flange, and the side rib bodies are arranged on the outer sides of the two openings on the other side of the web. , The side rib pieces constituting the side rib body are approximately 4 in the longitudinal direction of the beam.
A method for manufacturing a steel beam with a large diameter opening, which comprises inclining it by 5 ° and welding it to the web surface and the inner surface of the flange.
弧状部分に対向する側方リブ体を構成する側方リブ片の
角部に切欠き部を形成したことを特徴とする請求項１２
記載の大口径の開口のある鋼製梁の製造法。13. A notch portion is formed at a corner portion of a side rib piece constituting a side rib body facing an arcuate portion of a connecting portion between a beam web and a flange.
A method for manufacturing a steel beam having a large-diameter opening as described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3173039A JP3018118B2 (en) | 1991-06-18 | 1991-06-18 | Manufacturing method of beam with large diameter opening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3173039A JP3018118B2 (en) | 1991-06-18 | 1991-06-18 | Manufacturing method of beam with large diameter opening |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0693683A true JPH0693683A (en) | 1994-04-05 |
| JP3018118B2 JP3018118B2 (en) | 2000-03-13 |
Family
ID=15953075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3173039A Expired - Fee Related JP3018118B2 (en) | 1991-06-18 | 1991-06-18 | Manufacturing method of beam with large diameter opening |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3018118B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005023536A (en) * | 2003-06-30 | 2005-01-27 | Sumitomo Metal Steel Products Inc | Reinforcing structure of side wall opening part of metallic pipe column |
| JP2008019708A (en) * | 2007-09-19 | 2008-01-31 | Nippon Steel & Sumikin Metal Products Co Ltd | Reinforcing structure of side wall opening part of metallic pipe column |
| JP5274735B1 (en) * | 2012-09-12 | 2013-08-28 | 中国電力株式会社 | Steel frame opening reinforcement structure |
| CN105476574A (en) * | 2010-02-12 | 2016-04-13 | 花王株式会社 | Cleaning device |
-
1991
- 1991-06-18 JP JP3173039A patent/JP3018118B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005023536A (en) * | 2003-06-30 | 2005-01-27 | Sumitomo Metal Steel Products Inc | Reinforcing structure of side wall opening part of metallic pipe column |
| JP2008019708A (en) * | 2007-09-19 | 2008-01-31 | Nippon Steel & Sumikin Metal Products Co Ltd | Reinforcing structure of side wall opening part of metallic pipe column |
| CN105476574A (en) * | 2010-02-12 | 2016-04-13 | 花王株式会社 | Cleaning device |
| CN105476574B (en) * | 2010-02-12 | 2018-06-26 | 花王株式会社 | Cleaning device |
| JP5274735B1 (en) * | 2012-09-12 | 2013-08-28 | 中国電力株式会社 | Steel frame opening reinforcement structure |
| WO2014041632A1 (en) * | 2012-09-12 | 2014-03-20 | 中国電力株式会社 | Structure for reinforcing opening in steel frame |
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|---|---|
| JP3018118B2 (en) | 2000-03-13 |
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