JP2019218710A - Beam joint device for square steel pipe column - Google Patents

Beam joint device for square steel pipe column Download PDF

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JP2019218710A
JP2019218710A JP2018115106A JP2018115106A JP2019218710A JP 2019218710 A JP2019218710 A JP 2019218710A JP 2018115106 A JP2018115106 A JP 2018115106A JP 2018115106 A JP2018115106 A JP 2018115106A JP 2019218710 A JP2019218710 A JP 2019218710A
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steel tube
square steel
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bolt
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幹夫 田代
Mikio Tashiro
幹夫 田代
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Abstract

【課題】本発明は、鉄骨構造建築物における角形鋼菅柱の梁接合用装置において、溶接作業負担が少なくて構造性能の担保ができる、ノンブラケット工法の内ダイアフラム形式を提供すること。【解決手段】角形鋼管柱とＨ形鋼梁を用いた接合する接合構造にあって、Ｈ形鋼梁端部とボルト接合を行う箇所で、該梁端面のボルト孔に合致している複数のボルト孔を設けた角形鋼菅柱１にあって、前記角形鋼菅柱１の内径よりひと回り小さく、長さが前記Ｈ形鋼梁の梁成より大きくて、内面壁には、複数のナット４とボルト貫通孔５を有している角形鋼菅鋼からなるコアボックス２を、前記角形鋼菅柱１の内部に挿入し、前記角形鋼菅柱１の内面と前記コアボックス２外面との隙間には、複数のプレ−ト３を当接し、溶着６していること。【選択図】図１An object of the present invention is to provide a diaphragm type non-bracket construction method that reduces the burden of welding work and ensures structural performance in a device for joining beams of square steel columns in steel frame buildings. [Solution] In a joint structure that uses a square steel pipe column and an H-shaped steel beam, at the point where the end of the H-shaped steel beam is to be bolted, a plurality of A rectangular steel column 1 provided with bolt holes is one size smaller than the inner diameter of the rectangular steel column 1 and has a length larger than the beam size of the H-shaped steel beam, and has a plurality of nuts 4 on its inner wall. A core box 2 made of square steel tube having bolt through holes 5 is inserted into the inside of the square steel tube 1, and the gap between the inner surface of the square steel tube 1 and the outer surface of the core box 2 is In this case, a plurality of plates 3 are brought into contact with each other and welded 6. [Selection diagram] Figure 1

Description

本発明は、鉄骨構造建築物に角形鋼管柱を用いた、ノンブラケット工法の内ダイアフラム形式における、角形鋼管柱とＨ形鋼梁との接合装置に関するものである。 The present invention relates to a non-bracket inner diaphragm type joining apparatus for joining a rectangular steel pipe column to an H-shaped steel beam using a square steel pipe column for a steel structure building.

近年、柱材として、角形鋼菅柱を用いて、梁材としてＨ形鋼を用いた両方向ラ−メン構造が多用されている。例えば、図５に示すような、両方向ラ−メンの構造を得る手段として、角形鋼菅をＨ形鋼の両フランジ位置で切断し、そこにダイアフラムプレ−トを挟み込んで再接合する工法の、通しダイアフラム形式のブラケット工法が一般的に知られている。 2. Description of the Related Art In recent years, a bidirectional frame structure using a rectangular steel tube column as a column member and an H-section steel as a beam member has been frequently used. For example, as a means for obtaining a structure of a bidirectional frame as shown in FIG. 5, a method of cutting a square steel tube at both flange positions of an H-section steel, sandwiching a diaphragm plate there and rejoining, A through diaphragm type bracket construction method is generally known.

角形鋼菅柱を分断しない工法としては、柱の外周に上下２枚のダイアフラムを溶接している、外ダイアフラム形式の特開２００４−１６９２９８号（第１公知例）が開示されている As a method of not dividing the rectangular steel tube column, Japanese Patent Application Laid-Open No. 2004-169298 (first known example) discloses an outer diaphragm type in which two upper and lower diaphragms are welded to the outer periphery of the column.

次に、柱内部でダイアフラムを溶接する工法の内ダイアフラム形式が、日本建築学会の鋼構造接合部設計指針として、下記のように示されている（ａ）溶接組立柱の内ダイアフラム形式、（ｂ）プレス成形角形鋼管の内ダイアフラム形式、（ｃ）パネルを分割して製作する内ダイアフラム形式。 Next, the inner diaphragm type of the method of welding the diaphragm inside the column is shown as follows as a guideline for the design of steel structural joints of the Architectural Institute of Japan as follows: (a) Inner diaphragm type of welded assembled column; ) Inner diaphragm type of press-formed square steel pipe, (c) Inner diaphragm type produced by dividing panel.

特開昭６２−２９６０２９号（第２公知例）では、柱の接合端部内面に挿着される接合金物が中継菅として構成されており、この接合金物に設けられたネジ穴を利用して一方の柱の接合端部側面に梁をボルトで密着接合する方法が開示されている。 In Japanese Unexamined Patent Publication No. 62-296029 (second known example), a joint fitting inserted into an inner surface of a joint end of a column is configured as a relay tube, and a screw hole provided in the joint fitting is used by utilizing a screw hole. A method is disclosed in which a beam is tightly joined to a side face of a joint end of one pillar with a bolt.

また、特開昭６３−１２３３３４号（第３公知例）では、角型鋼管状の柱内に、高さが梁の上下フランジにＴ型金物を重ねた高さより大きく、幅が柱内面幅より小さい４枚の竪プレ−トで上下ダイアフラムプレ−トを連絡し、あるいは上下ダイアフラムプレ−トを連結杆で連結した補強金物を挿入し、竪プレ−トにボルトを挿通する方法が開示されている。 In Japanese Patent Application Laid-Open No. 63-123334 (third known example), in a square steel tubular column, the height is larger than the height of a T-shaped metal piece on the upper and lower flanges of a beam, and the width is larger than the inner width of the column. There is disclosed a method of connecting upper and lower diaphragm plates with four small vertical plates, or inserting a reinforcing metal member connecting the upper and lower diaphragm plates with connecting rods and inserting bolts through the vertical plates. I have.

平成２２年の公共建築物木材利用促進法の施工や平成２７年の建築基準法改正により、全国の自治体や企業において木造建築に対する関心が高まっており、平成２９年７月には、都市木造の普及型を目指した、７階建てのノンブラケット工法の木質ハイブリッドビルが、国内で初めて完成している。 Due to the construction of the Public Building Timber Use Promotion Law in 2010 and the revision of the Building Standard Law in 2015, local governments and companies nationwide have been interested in wooden buildings. In July 2017, A 7-story non-bracketed wooden hybrid building with the aim of popularization has been completed for the first time in Japan.

特開２００４−１６９２９８号JP 2004-169298 A 特開昭６２−２９６０２９号JP-A-62-296029 特開昭６３−１２３３３４号JP-A-63-123334

しかしながら、通しダイアフラム形式（図５）の例においては、高い接合部剛性を得ることができるが、反面、柱の切断加工や溶接作業負担が大きいという問題がある。例えば、角形鋼菅１を、Ｈ形鋼梁１２のせい（高さ）に合わせて角形鋼菅１を切断し、その角形鋼菅１の切断箇所の両端に、通しダイアフラム上部１１ａと通しダイアフラム下部１１ｂの２枚を組み合わせて、次に、接合するＨ形鋼梁１２の上下フランジ（１２ａ、１２ｂ）、ウェブ１２ｃ、さらに、通しダイアフラム上部１１ａの上部に有する上階の角形鋼菅１と、通しダイアフラム下部１１ｂの下部に有する下階の角形鋼菅１と、上下、四方向の各構造要素を含んでの接合になっている。従って、溶接が狭い範囲での集中作業になり、溶接入熱による影響等を考慮する必要があるため、難易度が高い接合方法である。 However, in the example of the through-diaphragm type (FIG. 5), a high joint rigidity can be obtained, but on the other hand, there is a problem that a load for cutting and welding a column is large. For example, the rectangular steel tube 1 is cut according to the height (height) of the H-shaped steel beam 12, and the upper end of the through-diaphragm 11a and the lower part of the through-diaphragm are provided at both ends of the cut portion of the rectangular steel tube 1. 11b, the upper and lower flanges (12a, 12b) of the H-shaped steel beam 12 to be joined, the web 12c, and the rectangular steel tube 1 on the upper floor having the upper part of the upper part of the through diaphragm 11a. The lower rectangular steel tube 1 provided at the lower portion of the lower diaphragm portion 11b is joined to the upper and lower four-directional structural elements. Therefore, welding is a concentrated operation in a narrow range, and it is necessary to consider the influence of welding heat input.

第１公知例の外ダイアフラム形式においては、角形鋼菅柱１の外周にダイアフラム４，５を溶接し、該ダイアフラム４，５に鉄骨梁２の端部のフランジ２ａ、２ｂを溶接している接合構造である。従って、鋼管を複数に分割する工程は不要となるが、通しダイアフラム形式と同様に、溶接作業負担が大きいのが問題である。 In the outer diaphragm type of the first known example, the diaphragms 4 and 5 are welded to the outer periphery of the rectangular steel tube column 1 and the flanges 2 a and 2 b at the ends of the steel beam 2 are welded to the diaphragms 4 and 5. Structure. Therefore, the step of dividing the steel pipe into a plurality of parts is not required, but there is a problem that the welding work load is large like the through-diaphragm type.

日本建築学会の鋼構造接合部設計指針における内ダイアフラム形式おいて、（ａ）の溶接組立柱の場合は、プレ−トを各部品に切断加工し、その部品を箱形断面の柱形状に製作する過程で、ダイアフラムを柱内部に内蔵させながら溶接で組み立てる方法である。（ｂ）のプレス成形角形鋼管の場合は、プレス機でプレ−トをコ字状に成形した柱材内部に、分割したダイアフラムを取付けて、柱材を組み合わせて溶接で固定する方法である。（ｃ）パネルを分割し製作する場合は、角形鋼管柱を柱梁接合部パネルの中間部で切断してダイアフラムを取付け、再度、柱を溶接接合する方法である。内ダイアフラム形式での柱梁接合部の応力伝達の方法は、通しダイアフラム形式と基本的に同じで、剛性の評価は高いが、通しダイアフラム形式と同様に、溶接作業負担が大きいのが問題である。 In the case of the welded column shown in (a), the plate is cut into each part and the part is made into a box-shaped column shape in the case of the welded column shown in (a) of the Inner Diaphragm Design Guideline of the Architectural Institute of Japan. In this process, welding is performed while the diaphragm is built in the column. In the case of the press-formed square steel pipe of (b), there is a method in which a divided diaphragm is attached inside a column member whose plate is formed in a U-shape by a press machine, and the column members are combined and fixed by welding. (C) In the case of dividing and manufacturing a panel, a square steel pipe column is cut at an intermediate portion of a column-beam joint panel, a diaphragm is attached, and the column is again welded and joined. The method of transmitting stress at the beam-to-column joint in the inner diaphragm type is basically the same as the through diaphragm type, and the evaluation of rigidity is high, but as with the through diaphragm type, the problem is that the welding work load is large. .

第２公知例の柱と梁の接合装置おいては、角形鋼菅柱１，２の柱梁接合部パネルの中間部に、中継菅を挿入して、接合金物６と柱１，２との接合をボルト７，８のみで行っている。引きボルト式の接合では、ボルトがまっすぐ引っ張られると想定しているが、実際には、応力を受けるとモーメントが生じており、その変形に対して抵抗性能（回転剛性）値は低い。従って、第２公知例に示されている柱と梁の接合装置は、回転剛性が低い工法である。 In the column-beam joining apparatus of the second known example, a relay tube is inserted into an intermediate portion of the column-beam joint panel of the rectangular steel tube columns 1 and 2 to connect the joint hardware 6 to the columns 1 and 2. The joining is performed only with the bolts 7 and 8. In the pull bolt type joining, it is assumed that the bolt is pulled straight, but in reality, when a stress is applied, a moment is generated, and the resistance performance (rotational rigidity) value against the deformation is low. Therefore, the column and beam joining device shown in the second known example is a construction method with low rotational rigidity.

第３公知例の柱、梁接合部構造おいては、角形鋼菅柱１内に補強金物４を挿入して、補強金物の竪プレ−ト５と角形鋼菅柱１をボルトのみで接合する工法である。引きボルト式の接合では、ボルトがまっすぐ引っ張られると想定しているが、実際には、応力を受けるとモーメントが生じており、その変形に対して抵抗する性能（回転剛性）値は低い。従って、第３公知例に示されている、柱、梁接合部構造は回転剛性が低い工法である。 In the column and beam joint structure of the third known example, the reinforcing metal member 4 is inserted into the rectangular steel tube column 1 and the vertical plate 5 of the reinforcing metal member and the rectangular steel tube column 1 are connected only by bolts. It is a construction method. In the pull bolt type joining, it is assumed that the bolt is pulled straight, but in reality, a moment is generated when subjected to stress, and the performance (rotational rigidity) of resisting the deformation is low. Therefore, the column and beam joint structure shown in the third known example is a method of low rotational rigidity.

平成２９年に完成した木質ハイブリッドビルは、鉄骨構造の７階建てのノンブラケット工法である。しかし、柱の芯材にＨ形鋼を用いたラ−メン構法であるが、ブレ−スが現出するため居住性に課題を残している。 The wooden hybrid building completed in 2017 is a seven-story non-bracketed steel structure. However, although this is a ramen construction method using an H-shaped steel as the core material of the column, there is a problem in the livability due to the appearance of braces.

本発明の解決すべき課題は、上述した従来の問題点を解決することにあり、Ｈ形鋼梁と接合する角形鋼管柱において、補強材として用いる角形鋼管鋼と該柱を、溶接と梁からのボルトで一体化させた接合で、高い回転剛性を得て、構造性能を担保する。また、溶接作業負担が少ない内ダイアフラム形式での、ノンブラケット工法を提供することにある。 The problem to be solved by the present invention is to solve the above-mentioned conventional problems. In a rectangular steel pipe column to be joined to an H-shaped steel beam, a square steel pipe steel used as a reinforcing material and the column are welded and welded. High rotational rigidity is obtained by joining together with bolts to ensure structural performance. Another object of the present invention is to provide a non-bracket construction method using an inner diaphragm that has a small welding work load.

上記課題を解決するための本発明に係る角形鋼菅柱の梁接合用装置は、Ｈ形鋼梁端部とボルト接合を行う箇所で、該梁端面のボルト孔に合致している複数のボルト孔を設けた角形鋼菅柱にあって、前記角形鋼菅柱の内径よりひと回り小さく、長さが前記Ｈ形鋼梁の梁成より大きくて、内面壁には、複数のナットとボルト貫通孔を有している角形鋼菅鋼からなるコアボックスを、前記角形鋼菅柱の内部に挿入し、前記角形鋼菅柱の内面と前記コアボックス外面との隙間には、複数のプレ−トを当接し、溶着していることを特徴としている。   In order to solve the above-mentioned problem, a beam joining apparatus for a rectangular steel tube column according to the present invention includes a plurality of bolts that match bolt holes in a beam end face at a portion where bolt joining is performed with an end of an H-shaped steel beam. A rectangular steel tube column having a hole, which is slightly smaller than the inner diameter of the rectangular steel tube column, the length is larger than the beam length of the H-shaped steel beam, and a plurality of nut and bolt through holes are formed in the inner wall. A core box made of rectangular steel tube steel having the following structure is inserted into the rectangular steel tube column, and a plurality of plates are provided in a gap between the inner surface of the rectangular steel tube column and the outer surface of the core box. It is characterized by being abutted and welded.

（Ａ）本発明に係る梁接合用装置によれば、本考案は角形鋼菅柱のノンブラケット工法であり、ブラケットの製作が不要になるため、加工が簡略化される。また、高度な溶接技術が不用となるので、加工費と搬送費を大幅に低減することができる。 (A) According to the beam joining apparatus according to the present invention, the present invention is a non-bracket method for square steel tubular columns, and the fabrication of the bracket is unnecessary, so that the processing is simplified. In addition, since advanced welding technology is not required, processing costs and transport costs can be significantly reduced.

（Ｂ）本発明に係る梁接合用装置によれば、本考案は溶接作業負担を考慮した内ダイアフラム形式である。例えば、角形鋼菅柱内に内蔵させるダイアフラムの製作方法は、従来の方式と異なるため、高度な溶接技術は不用となり加工費を大幅に低減することができる。 (B) According to the beam joining apparatus according to the present invention, the present invention is an inner diaphragm type in consideration of a welding work load. For example, a method of manufacturing a diaphragm to be built in a rectangular steel tube column is different from a conventional method, so that an advanced welding technique is not required, and the processing cost can be significantly reduced.

（Ｃ）本発明に係る梁接合用装置によれば、従来のノンブラケット工法と異なり、角型鋼管柱を用いて、高い回転剛性での構造性能を担保している。従って、新しいタイプの木質ハイブリッドビル用への躯体製作には最適である。 (C) According to the beam joining apparatus according to the present invention, unlike the conventional non-bracketing method, the structural performance with high rotational rigidity is secured by using a square steel pipe column. Therefore, it is ideal for building a new type of wooden hybrid building.

以下、図１〜５に基づいて、本発明を実施するための最良の形態を説明する。図１は本発明に係る角形鋼菅柱の梁接合用装置の一例を示す図面であり、（ａ）はＡ-Ａ縦断面図、（ｂ）はＢ−Ｂ平断面図である。この例において、角形鋼菅１、コアボックス（角形鋼菅）２、調整プレ−ト３，ナット４、ボルト貫通孔５、スロット溶接６、およびスロット溶接用の下穴７から構成されている。以下、これに沿って説明する。 Hereinafter, a best mode for carrying out the present invention will be described with reference to FIGS. FIGS. 1A and 1B are drawings showing an example of an apparatus for joining beams of a rectangular steel tube column according to the present invention, wherein FIG. 1A is a longitudinal sectional view taken along the line AA, and FIG. In this example, a square steel tube 1, a core box (square steel tube) 2, an adjusting plate 3, a nut 4, a bolt through hole 5, a slot weld 6, and a pilot hole 7 for slot weld. Hereinafter, description will be made along this.

まず、角形鋼菅柱について説明する。角形鋼菅柱は、図１で示すように、角形鋼菅１とコアボックス（角形鋼菅）２の間に調整プレ−ト３が挿入され構成されている。以下、これに沿って説明する。図２に示すように、角形鋼菅１の外面には、Ｈ形鋼梁との接合用に、ボルト貫通孔５が施され、更に、調整プレ−ト３との接続用にスロット溶接用の下穴７が加工されている。次に、コアボックス（角形鋼菅）２のコアボックス材は、図３に示すように、角形鋼菅１より一回り小さい寸法の角形鋼管を使用して、所定寸法の長さに切断し、その角形鋼菅の内壁面には、図１で示すように、ナット４とボルト貫通孔５が施されている。次いで、図３に示すように、調整プレ−ト３は、プレ−トを所定の寸法に加工し、そのプレ−ト面にボルト貫通孔５を加工し、前記の角形鋼菅のボルト孔５と重なるように合わせて、前記の角形鋼菅の外面と前記の調整プレ−ト面３が隅肉溶接で接合され、コアボックス（角形鋼菅）２が形成されている。 First, the rectangular steel column will be described. As shown in FIG. 1, the rectangular steel tube column has an adjusting plate 3 inserted between a rectangular steel tube 1 and a core box (square steel tube) 2. Hereinafter, description will be made along this. As shown in FIG. 2, a bolt through hole 5 is formed on the outer surface of the rectangular steel tube 1 for joining with an H-shaped steel beam, and a slot welding for connecting with the adjusting plate 3 is performed. A pilot hole 7 is machined. Next, as shown in FIG. 3, the core box material of the core box (square steel tube) 2 is cut into a predetermined length using a square steel tube having a size slightly smaller than the square steel tube 1, As shown in FIG. 1, a nut 4 and a bolt through hole 5 are formed on the inner wall surface of the rectangular steel tube. Next, as shown in FIG. 3, the adjusting plate 3 is formed by processing the plate to a predetermined size, forming a bolt through hole 5 on the plate surface, and forming the bolt hole 5 of the square steel tube. The outer surface of the rectangular steel tube and the adjustment plate surface 3 are joined by fillet welding so that a core box (square steel tube) 2 is formed.

次に、角形鋼菅１とコアボックス（角形鋼菅）２の結合方法を説明する。図４に示すように、角形鋼菅１の内部にコアボックス（角形鋼菅）２が挿入し、前記コアボックス（角形鋼菅）２と角形鋼菅１のボルト貫通孔５のボルト孔が合致して、角形鋼菅１のスロット溶接用の下穴７から調整プレ−ト３へ、スロット溶接６（図１参照）施され、コアボックス（角形鋼菅）２と角形鋼菅１が付着し一体化される。従って、角形鋼菅１と調整プレ−ト３及びコアボックス（角形鋼菅）２との複層で、角型鋼管柱の断面積が増えて、断面性能が高くなり、高い剛性を得ることになる。 Next, a method of connecting the square steel tube 1 and the core box (square steel tube) 2 will be described. As shown in FIG. 4, a core box (square steel tube) 2 is inserted into the square steel tube 1, and the bolt holes of the core box (square steel tube) 2 and the bolt through holes 5 of the square steel tube 1 are aligned. Then, slot welding 6 (see FIG. 1) is performed from the pilot hole 7 for slot welding of the square steel tube 1 to the adjusting plate 3 so that the core box (square steel tube) 2 and the square steel tube 1 adhere. Integrated. Therefore, in the multilayer structure of the square steel tube 1, the adjusting plate 3 and the core box (square steel tube) 2, the cross-sectional area of the square steel tube column is increased, the cross-sectional performance is increased, and high rigidity is obtained. Become.

以上説明したように角形鋼菅柱と梁の接合構造において、ノンブラケット工法における、溶接の作業性を考慮した内ダイアフラム形式の梁接合用装置を採用すると、難易度の高い溶接技術を用いることなく、加工が簡略化される。さらに、現在、開発途上にある、木質ハイブリッド耐火ビルに用いている躯体柱は、Ｈ形鋼であるが角形鋼管を用いることにより、合理的な設計が可能で経済的である。従って、建設業界での社会に与える効用は極めて大きい。 As described above, in the joint structure of the square steel tube column and beam, if a beam joining device of the inner diaphragm type in consideration of the workability of welding in the non-bracket method is adopted, without using the welding technology with high difficulty Processing is simplified. Furthermore, the frame used in the wooden hybrid fire-resistant building which is currently under development is an H-shaped steel, but by using a square steel pipe, a rational design is possible and economical. Therefore, the utility to the society in the construction industry is extremely large.

本発明に係る角形鋼菅柱の梁接合用装置の一例を示す図面あり、（ａ）はＡ-Ａ平断面図、（ｂ）は縦断面図である。BRIEF DESCRIPTION OF THE DRAWINGS It is drawing which shows an example of the apparatus for beam joining of the square steel tube column which concerns on this invention, (a) is AA plane sectional drawing, (b) is a longitudinal cross-sectional view. 本発明に係る角形鋼管柱の加工例を示す立体説明図である。It is a three-dimensional explanatory view showing the example of processing of the square steel tube pillar concerning the present invention. 本発明に係るコアボックス（角形鋼菅）の製作例を示す立体説明図面である。It is three-dimensional explanatory drawing which shows the example of manufacture of the core box (square steel tube) which concerns on this invention. 本発明に係る角形鋼管内部へのコアボックス（角形鋼菅）を挿入する過程の例を示す説明図である。It is explanatory drawing which shows the example of the process of inserting a core box (square steel tube) into the inside of a square steel tube concerning this invention. 従来のブラケット工法における、通しダイアフラム形式の角形鋼管柱を示す立体説明図である。It is three-dimensional explanatory drawing which shows the square-diameter steel pipe column of a through diaphragm type in the conventional bracket construction method.

１ 角形鋼管
２ コアボックス（角形鋼菅）
３ 調整プレ−ト
４ ナット
５ ボルト貫通孔
６ スロット溶接
７ スロット溶接用の下穴
１１ａ 通しダイアフラム上
１１ｂ 通しダイアフラム下
１２ ブラケット（Ｈ形鋼）




1 square steel pipe 2 core box (square steel pipe)
3 Adjustment plate 4 Nut 5 Bolt through hole 6 Slot welding 7 Slot hole for pilot welding 11a Through-diaphragm upper 11b Through-diaphragm lower 12 Bracket (H-section steel)




Claims (1)

Ｈ形鋼梁端部とボルト接合を行う箇所で、該梁端面のボルト孔に合致している複数のボルト孔を設けた角形鋼菅柱にあって、前記角形鋼菅柱の内径よりひと回り小さく、長さが前記Ｈ形鋼梁の梁成より大きくて、内面壁には、複数のナットとボルト貫通孔を有している角形鋼菅鋼からなるコアボックスを、前記角形鋼菅柱の内部に挿入し、前記角形鋼菅柱の内面と前記コアボックス外面との隙間には、複数のプレ−トを当接し、溶着していることを特徴とする角形鋼菅柱の梁接合用装置。


































In a rectangular steel tube column provided with a plurality of bolt holes corresponding to the bolt holes in the end of the H-shaped steel beam at a position where the bolt joint is to be performed, the diameter is slightly smaller than the inner diameter of the rectangular steel tube column. A core box made of square steel tube steel having a length greater than the beam length of the H-shaped steel beam and having a plurality of nuts and bolt through-holes on an inner surface wall, inside the square steel tube column; A plurality of plates are in contact with and welded to a gap between an inner surface of the rectangular steel tube column and an outer surface of the core box, the beam joining device for a rectangular steel tube column.


































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