JP3789402B2

JP3789402B2 - Crossing method of beam-to-column joints of architectural steel structures

Info

Publication number: JP3789402B2
Application number: JP2002185616A
Authority: JP
Inventors: 昌克内田; 俊二岩郷; 忠男中込
Original assignee: 昌克内田
Priority date: 2002-06-26
Filing date: 2002-06-26
Publication date: 2006-06-21
Anticipated expiration: 2022-06-26
Also published as: JP2004027655A

Description

【０００１】
【発明の属する技術分野】
本発明は、建築鉄骨構造物の柱梁接合部において、Ｈ形鋼梁又は２枚の平行した鋼板を対とする梁を角形鋼管柱に貫通させ、角形鋼管柱の内部で交差させて、建築鉄骨構造物を製作する技術の方法に関するものである。
【０００２】
【従来の技術】
従来の技術では、建築鉄骨構造物の柱梁接合部は図１に示すように、鋼板によるダイアフラム１と短い角形鋼管２との間で溶接６を施すことによりサイコロを形成させ、このサイコロとＨ形鋼梁フランジ４を溶接接合７し、更に、該サイコロと角形鋼管柱５とを溶接接合して構成する事が多い。この従来の技術では、図２に示すように、サイコロの角形鋼管２とダイアフラム１との溶接６及びサイコロのダイアフラム１とＨ形鋼梁フランジ４の溶接７は裏当金１０を用いて片側溶接で実施されている。このダイアフラム１と梁フランジ４との従来溶接方法では、フランジ４の接合予定端部の開先加工をしてから、裏当金１０の製作及び裏当金取付の仮付溶接８を行い、本溶接７を実施している。また、ダイアフラム１と角形鋼管２又は５との溶接も角形鋼管２又は５の接合予定端部の開先加工をしてから、裏当金１０の製作及び裏当金取付の仮付溶接８を行いダイアフラム１と角形鋼管２又は５との本溶接６を実施している。
【０００３】
一方、特願平１０−２０４８２８では、図３に示すように、鋼管柱５へのコンクリート充填性を良くすると共に、梁を柱に容易に接合できる梁と柱の接合方法が公開されている。本方法は、柱５に貫通する第１プレート１２及び第２プレート１３をコンクリート充填が容易なようにそれぞれ一枚ずつ鉛直に立てて貫通させ、図４に示すように、梁３Ｃのウエブ９とボルト接合２０され該第１プレート１２及び第２プレート１３は柱５に直接溶接接合がなされていない。図４に示すように、梁３Ｃを柱５に接合させるために、梁３Ｃに水平スティフナー１４を溶接で取付けてからこのスティフナーを介して梁３Ｃが柱５に溶接接合される。
【０００４】
【発明が解決しようとする課題】
従来の建築鉄骨柱梁接合部では、殆どが図１で示すサイコロで製作されており、サイコロを介して柱と梁が溶接接合されており、柱５は階毎に角形鋼管の切断と溶接がなされる。従来の方法では、図２に示すように、ダイアフラム１・角形鋼管２・裏当金１０・エンドタブ等部材数が多く、溶接６は角形鋼管２の周囲に一周しており溶接量が多い。そのため、部品製作コストが掛かると共に、サイコロ製作後ダイアフラム端部が折れ曲がり、いわゆる傘折れ現象が起きて、ダイアフラムと梁フランジとの間で目違いが起こりやすいと言う問題がある。また、裏当金１０を角形鋼管２の端部内周に取付け仮付溶接８を行うのは手間とコストが掛かる。また、角形鋼管２とダイアフラム１の溶接６を全周に亘って行うため、溶接量が多いので溶接残留応力が大きくなるだけでなく、裏当金１０を用いると裏当金１０と部材１、２、４及び５との間で切り欠きが出来て応力集中が発生し、強度を弱める結果となる。
【０００５】
一方、特願平１０−２０４８２８では、図３に示すように、Ｈ形鋼梁３Ｃに係る荷重はＨ形鋼梁ウエブ９からプレート１２又は１３を介して柱５に掛かるが、一本のＨ形鋼梁３Ｃに対してフランジ無しの１枚の鉛直プレートであり、該プレートと柱本体とは溶接接合されておらず、しかも、柱５内のプレート１２と１３の交差部は交差用の溝又は切り欠きがあり、Ｈ形鋼梁フランジ４は柱５への荷重伝達にほとんど寄与していない。従って、Ｈ形鋼梁３Ｃと角形鋼管柱５との接合部の強度は軸荷重・鉛直曲げ・側方曲げ・ねじりに対し十分ではない。また、図４では、この強度不足を補うため、梁フランジ４の側面にスティフナー１４を取付けて、該スティフナー１４を介して角形鋼管柱５にＨ形鋼梁フランジ４を溶接接合させている。この場合でも、Ｈ形鋼梁３Ｃの荷重を受ける角形鋼管柱５の内部が空洞又はコンクリート充填であり、梁フランジ４の引張又は曲げ荷重に対し、柱５の側壁が大きく耐えることができず、地震等でＨ形鋼梁３Ｃに掛かる種々の荷重に対し角形鋼管柱５で十分受け止めることができない。プレート１２及び１３はＨ形鋼梁一本に対し１枚であり、更に、角形鋼管柱５のプレート１２及び１３の角形鋼管柱５への貫通部に溶接がなされていないので、Ｈ形鋼梁３Ｃに係る荷重は角形鋼管柱５に該プレートを介して荷重が伝達されず、角形鋼管柱５側面には孔が開いた状態であり、角形鋼管柱５に掛かる曲げ荷重及び圧縮荷重に対し、角形鋼管柱５の強度は低下するという問題がある。一方、Ｈ形鋼梁フランジ４に該スティフナーを取り付ける場合は、該スティフナーの材料と製作が必要になってコストアップの要因となる。
【０００６】
【目的】
本発明は、建築鉄骨構造物の柱梁接合部において、構造を単純化することにより、応力集中を緩和して溶接接合部強度を向上させると共に、溶接接合部の溶接量を軽減して製作コストを低減させることを目的とする。
【０００７】
【課題を解決するための手段】
このような諸課題を解決する目的で、先ず溶接量を軽減するためにダイアフラムを省略することを第一に研究したが、この場合、角形鋼管柱内部は空洞なので強度が不足するため問題である。そこで、種々研究した結果、角形鋼管柱の梁接続箇所に梁断面形状に似せて開けた貫通孔に短いＨ形鋼梁を挿入させるとともに該Ｈ形鋼梁を該角形鋼管柱から突出させながら、互いに直角方向から貫通する短いＨ形鋼梁を角形鋼管柱内部で小さい梁せいの梁をウエブを除去した大きい梁せいの梁に貫通させて交差させるか、又は、貫通梁同士を溶接し、且つ、該Ｈ形鋼梁と該角形鋼管柱とを溶接接合した上で、該柱を貫通する短いＨ形鋼梁と柱間中央Ｈ形鋼梁をボルト接合すれば鉄骨構造建築が可能であり、その結果、ダイアフラムを省略しても梁に掛かる荷重は十分角形鋼管柱に伝達されることを見いだした。
【０００８】
該短いＨ形鋼梁の代わりに、長いＨ形鋼梁を角形鋼管柱の梁接続箇所に開けた貫通孔に挿入し溶接接合すれば、柱間中央の溶接接合又はボルト接合箇所を減らすことを可能であることも見いだした。
【０００９】
また、少なくとも一つの該短いＨ形鋼梁の代わりに、水平で平行な２枚で一対の鋼板で置き換えて、角形鋼管柱の梁接続箇所に開けた貫通孔にそれぞれ挿入させて、該鋼板の対による梁同士を角形鋼管柱内部で交差させた上で、総ての貫通梁と該角形鋼管柱とを溶接接合させて、角形鋼管柱の外側で該鋼板と接合されるＨ形鋼梁は柱と突き合わせることなくそれぞれの貫通梁を柱間中央のＨ形鋼梁フランジと溶接接合又はボルト接合して鉄骨構造物を製作すれば、Ｈ形鋼梁を角形鋼管柱に貫通させるよりも容易となり、ダイアフラムを省略しても梁に掛かる荷重は十分角形鋼管柱に伝達されることを見いだした。
【００１０】
そこで、請求項１に係る発明では、建築鉄骨構造物の柱梁接合部において、発明の構成は先ず、角形鋼管柱の梁接続予定箇所に梁の断面形状に似せて開けた貫通孔に、複数のＨ形鋼梁を挿入させることであり、次の構成は、該角形鋼管柱に互いに直角方向から貫通するＨ形鋼梁を該角形鋼管柱内部で小さい梁せいの梁をウエブを除去した大きい梁せいの梁に貫通させて交差させるか、又は、貫通梁同士を溶接することであり、次の構成は、該Ｈ形鋼梁と該角形鋼管柱と直接溶接接合することであり、これら構成により、Ｈ形鋼梁を柱内部で交差させて鉄骨構造物製作する方法である。本方法を用いれば、ダイアフラムを省略しても、梁が角形鋼管柱を貫通し且つ溶接されているので、梁に掛かる荷重は十分角形鋼管柱に伝達される。本発明の新規性は、ダイアフラムを省略させてＨ形鋼梁そのものを該梁断面形状に似せて角形鋼管柱に開けた貫通孔に貫通させることと、該角形鋼管柱と貫通させた総ての該梁とを直接溶接接合させることなどで強固な柱梁接合部を得ることにある。
【００１１】
請求項２に係る発明は、建築鉄骨構造物の柱梁接合部において、発明の構成は先ず、少なくとも梁の一つを比較的短くて水平で平行な２枚の鋼板の対とすることであり、次の構成は、角形鋼管柱の所定の梁接続箇所に該梁断面形状に似せて開けた貫通孔に、Ｈ形鋼梁又は水平で平行な２枚の鋼板の対からなる梁を含めた総ての梁を挿入させることにあり、次の構成は、該鋼板の対の梁と柱を貫通させた他方の梁とを該角形鋼管柱の内部で交差させることであり、
次の構成は、柱を貫通させた総ての梁と該角形鋼管柱とを溶接接合させることであり、更に次の構成は、該角形鋼管柱の外側で該鋼板と接合されるＨ形鋼梁は柱と突き合わせることなく少なくとも該鋼板の対の梁と柱間中央のＨ形鋼梁とを溶接接合することであり、又は、該貫通梁と該柱間中央Ｈ形鋼梁下側フランジとをボルト接合する操作と、該柱間中央梁上側フランジ端部裏面に肉盛溶接して開先加工をしたのち該貫通梁と溶接接合する操作とを組み合わせことである。これら構成により、該鋼板の対の梁とＨ形鋼梁を、又は、該鋼板の対の梁同士を柱内部で交差させて鉄骨構造物製作する方法である。本発明に係る方法では、請求項１に係る方法において角形鋼管柱を貫通するＨ形鋼梁の少なくとも１本に対し、比較的短くて水平で平行な２枚を一対とする鋼板梁で置き換えることを特徴としている。該鋼板梁は該角形鋼管柱内で他の梁と交差した場合にその端部が角形鋼管柱から突出し、該一対の鋼板梁の上下間隔は柱間中央のＨ形鋼梁せいの程度とし、該鋼板梁の左右方向幅は特に制限はないが通常は該Ｈ形鋼梁フランジの幅程度とし、該鋼板梁の板厚は該Ｈ形鋼梁フランジの肉厚よりも通常は大きくする。本発明の新規性は、ダイアフラムを省略させてＨ形鋼梁そのものを角形鋼管柱に貫通させ溶接接合させることと、Ｈ形鋼梁を一対の水平で平行な２枚の鋼板の梁で置き換えて角形鋼管柱と貫通させた総ての梁とを直接溶接接合させることなどにある。角形鋼管柱内の梁の交差部は少なくとのフランジ部分は連続しており、角形鋼管柱及び梁に対する外的荷重に対し十分な強度を有することも特長である。
【００１２】
請求項１又は請求項２に係る発明において、角形鋼管柱と該角形鋼管柱を貫通する短い梁との接合で完全溶け込みの突合せ溶接を該角形鋼管柱の外面から片側溶接で安定して実施する場合に、材料の寸法精度があまり良くないので該開口部の該角形鋼管柱の内面側に裏当金を宛う必要があり、請求項３に係る発明は、発明の構成は先ず、角形鋼管柱の側面の所定位置に梁の断面形状及び本数に合わせた開口部又は溶接開先を付けた開口部を設けて、該開口部に該梁を挿入し複数の梁を該角形鋼管柱の内部で交差させることであり、次の構成は、該角形鋼管柱の外側から該開口部を通じて該開口部の該角形鋼管柱の内面側に溶接熱で溶融される細いワイヤ又は箔を用いて裏当金を挿入してセットすることであり、これら構成により、該角形鋼管柱と該梁を該角形鋼管柱の外側から片側溶接する方法である。本発明の新規性は、該角形鋼管柱に該梁を貫通させて角形鋼管柱の内部で梁を交差させ柱梁を互いに直接突合せ溶接する点に加えて、該突合せ溶接時に、該角形鋼管柱の外側から該開口部を通じて、該開口部の該角形鋼管柱の内面側に溶接熱で溶融される細いワイヤ又は箔を用いて裏当金を挿入してセットすることである。
【００１３】
請求項１及び請求項２に係る発明において、角形鋼管柱と該角形鋼管柱を貫通する短い梁との接合で裏当金を省略すると溶接施工性が格段に良くなるので、請求項４に係る発明は、発明の構成はまず、角形鋼管柱の側面の所定位置に梁の断面形状及び本数に合わせた開口部又は溶接開先を付けた開口部を設けて、該開口部に該梁を挿入し複数の梁を該角形鋼管柱の内部で交差させることであり、次の構成は、両者を該角形鋼管柱の外面から片側溶接ですみ肉溶接するか又は部分溶け込み突合せ溶接する場合に、該角形鋼管柱と該梁とを母材よりも強度の高い溶接材料ですみ肉溶接又は部分溶け込み溶接を行うことであり、更に次の構成では、溶接時に、該柱肉厚の１０％以上大きいのど厚を確保することである。本発明の新規性は、柱と梁を交差させた柱梁接合部構造と母材よりも高い強度の溶接材料ですみ肉溶接又は部分溶け込み溶接を行うこととを組み合わせることであり、更に、これらの溶接において角形鋼管柱肉厚の１０％以上大きいのど厚を確保することなどである。即ち、柱と梁を交差させた柱梁接合部構造の製作において、溶接作業性を向上させ継手強度を確保するため、すみ肉溶接又は部分溶け込み溶接において高強度溶接材料と大きいのど厚を採用することに特徴がある。
【００１４】
請求項１、又は、２に係る記載の発明において、裏当金を省略しても突合せ溶接を可能にするため、請求項５に係る発明は、発明の構成はまず、角形鋼管柱の側面に梁の断面形状及び本数に合わせた開口部を設けて、次の構成は、該角形鋼管柱側に開先加工を行うことであり、次の構成は、開先近傍を加熱して開先部及びその近傍を該角形鋼管柱の内面方向へ曲げ加工を行うことであり、次の構成は、該開口部に該梁を挿入し複数の梁を角形鋼管柱の内部で交差させることであり、更に、次の構成は、該角形鋼管柱肉厚の１０％以上大きいのど厚を確保して、角形鋼管柱と梁とを角形鋼管柱の外側から片側溶接することである。本発明の新規性は、柱と梁とを交差させた柱梁接合部構造と、該角形鋼管柱側に開先加工を行い、開先部とその近傍を加熱して曲げ加工することを組み合わせることにあり、更に、これらの溶接において該角形鋼管柱肉厚の１０％以上大きいのど厚を溶接接合で確保することなどである。
【００１５】
請求項１又は請求項２に係る発明において、角形鋼管柱と該角形鋼管柱を貫通する短い梁との接合で完全溶け込みの突合せ溶接を実施する際に、該角形鋼管柱の外面から片側溶接を実施する必要があり、請求項６に係る発明では、発明の構成は先ず、角形鋼管柱の側面に梁の断面形状及び本数に合わせた開口部又は溶接開先を付けた開口部を設けて、該開口部にそれぞれ該梁を挿入し複数の梁を該角形鋼管柱の内部で交差させることであり、次の構成は、該開口部の該角形鋼管柱の内面側に裏当金を当てて、角形鋼管柱側において表側の溶接ビード止端部の位置が裏面の溶接ルート部の位置より該角形鋼管柱肉厚の８０％以上離れて位置するように溶接させることであり、更に次の構成では、少なくとも裏面の溶接ビード幅の領域における表ビード余盛り高さが少なくとも該角形鋼管柱肉厚の１０％以上確保され余盛りが母材表面から滑らかに変化するようにすることであり、これら構成により、該角形鋼管柱と該梁とを該角形鋼管柱の外側から片側溶接する方法である。本発明の新規性は、該角形鋼管柱に該梁を貫通させて角形鋼管柱の内部で梁を交差させ柱梁を互いに直接突合せ溶接する点に加えて、該溶接部のビード幅を広げ且つ余盛り高さをより高くして継手ルート部の応力集中を軽減して溶接継手強度を増加させる点などにある。
【００１６】
【発明の実施の形態】
実施例１
請求項１に係る発明の方法では、建築鉄骨構造物の柱梁接合部において、図６に示すように、角形鋼管柱５の側面にＨ形鋼梁の断面形状に似せて開けた貫通の開口部１７をガス切断、プラズマ切断、レーザ切断等によりＨ形鋼梁の取付予定位置に設け、次に、図５の立体図に示すように、角形鋼管柱５の梁接続箇所に開けた図６に示す貫通孔１７に複数のＨ形鋼梁３を挿入させて該角形鋼管柱５の内部で交差させ、該角形鋼管柱５と該Ｈ形鋼梁３とを突合せ溶接又はすみ肉溶接による接合を行い、鉄骨構造物を製作する方法である。本方法によれば、梁せいが異なる場合３階分の柱を切断せず１本で製作することが可能になる。
【００１７】
実施例２
請求項１に係る発明の方法において、互いに直交する同じ梁せいを持つＨ形鋼梁はそのままでは角形鋼管柱内部で立体交差が難しく平面交差しかできない。その場合、請求項１に係る発明の方法では、図７に示すように、一方のＨ形鋼梁３Ａを長手方向に２本に分けたものとし、角形鋼管柱５の梁接続予定箇所に開けた貫通孔にそれぞれ挿入させて角形鋼管柱５の内部で他の貫通Ｈ形鋼梁３と溶接２１した上で総ての貫通Ｈ形鋼梁３及び３Ａと該角形鋼管柱５とを溶接接合１５させて、鉄骨構造物を製作する。
【００１８】
実施例３
請求項１に係る発明の方法において、互いに直交する同じせいを持つＨ形鋼梁を立体交差させる方法の一つを図８に示す。図８では、一方のＨ形鋼梁３Ｂをその長手方向の中央部でウエブを除去して角形鋼管柱５の貫通孔を通して挿入して、他方のＨ形鋼梁３を角形鋼管柱５の貫通孔を通して除去したウエブ部分にフランジ部分４Ａの強制的変形により交差させる方法である。この場合、一方のＨ形鋼梁フランジ４はフランジ４Ａのように上下に曲げられるが、他方のＨ形鋼梁３の交差前に、Ｈ形鋼梁３Ｂのウエブを除去した部分のフランジを予め加熱しておく方法も有効である。本実施例の場合、交差部で梁同士の溶接を角形鋼管柱内で行う必要がないので、同じ一つの角形鋼管柱でＨ形鋼梁を複数階に渡り取り付けることが可能になる。本方法によれば、梁せいが同じでも、３階分の柱を切断せず１本で製作することが可能になる。
【００１９】
実施例４
請求項１に係る発明の方法において、互いに直交する同じせいを持つＨ形鋼梁が柱から２方向にしか梁がのびていない場合を平面交差させる方法の一つを図９に示す。この場合は、角形鋼管柱内で梁同士を溶接接合２１し、少なくとも一つの梁は柱の両方の側面を貫通させる。
【００２０】
実施例５
請求項１に係る発明の方法において、角形鋼管柱に貫通する複数のＨ形鋼梁のせいが異なる場合は、図１０に示すように、せいの高い方のＨ形鋼梁３Ｂをその長手方向の中央部で小さい方のＨ形鋼梁が通るようにウエブを除去して角形鋼管柱５の貫通孔を通して挿入して、せいの小さい他方のＨ形鋼梁３を角形鋼管柱５の貫通孔及びウエブ除去したＨ形鋼梁を貫通させて、交差させる方法である。本実施例の場合、交差部で梁同士の溶接を角形鋼管柱内で行う必要がないので、同じ一つの角形鋼管柱でＨ形鋼梁を複数階に渡り取り付けることが可能になる。
【００２１】
実施例６
請求項１に係る発明の方法において、角形鋼管柱５に貫通させるＨ形鋼梁３の長さを比較的短い寸法とすれば、図５に示すように貫通梁の端部にボルト孔１６を開け、柱間のＨ形鋼中央梁とボルト接合することが可能である。また、この貫通梁を長くすれば柱間の中央梁を省略することが可能になる。
【００２２】
実施例７
請求項２に係る発明の方法において、図１１及び図１２では、梁の一つを水平で平行な２枚で一対の鋼板の梁１８とし、他方をＨ形鋼梁３として、角形鋼管柱５の梁接続箇所に開けた図１５に示す貫通孔１７と１７Ａにそれぞれ梁１８及び３を挿入させて、該鋼板の対の梁１８と他方の梁３とを該角形鋼管柱の内部で交差させ、総ての貫通梁１８及び３と、該角形鋼管柱５とを溶接接合１５させて、鉄骨構造物を製作する方法を示し、更に、角形鋼管柱５の外側で該貫通梁１８を柱間中央Ｈ形鋼梁フランジ４と溶接接合１９して鉄骨構造物を製作する方法を示す。該貫通梁１８を柱間中央Ｈ形鋼梁フランジ４と溶接接合する場合、図１１に示すすみ肉前面溶接の他に、該貫通梁１８を柱間中央Ｈ形鋼梁フランジ４とを側面溶接を実施すれば更に強力な継手が得られる。なお、梁１８は、ウエブが無いためＨ形鋼梁３のフランジ４の肉厚よりも通常肉厚を大きくするか又は強度を高くすることも該梁の強度又は剛性を確保する上で有効である。本方法によれば、柱間の梁の梁せいが同じでも３階分の柱を１本で製作することが可能になる。
【００２３】
実施例８
実施例７における該貫通梁１８と柱間中央Ｈ形鋼梁フランジ４との溶接接合の代りに、図１２及び図１４のボルト孔１６を利用して、図１３及び図１４に示すように、ボルト接合２０を用いても良い。該ボルト接合２０の場合は、溶接のように建設現場における天候の影響を受けにくいという特長がある。
【００２４】
実施例９
請求項２に係る発明の方法において、図１７では、梁の２方向共に、水平で平行な２枚で一対の鋼板の梁１８及び１８Ａとし、角形鋼管柱５の梁接続箇所に開けた図１６に示す貫通孔１７Ａに梁１８及び１８Ａを挿入させて、該鋼板の対の梁１８及び１８Ａを該角形鋼管柱の内部で交差させ、貫通梁１８及び１８Ａと、該角形鋼管柱５とを溶接接合１５させた立体図を示し、図１７の２枚で一対の鋼板の梁１８の端部に取り付けたボルト接合用の孔１６を用いれば、図１４と同様に、角形鋼管柱５の外側で該貫通梁１８及び１８Ａと柱間中央Ｈ形鋼梁フランジ３Ｃとをボルト接合２０して鉄骨構造物を製作できる方法を示す。
【００２５】
実施例１０
請求項２に係る発明の方法において、図１８は、２方向とも水平で平行な２枚の鋼板の対を梁１８及び１８Ａとして、該２対の梁１８と１８Ａのせい高さを同じにして、角形鋼管柱５を貫通させた場合の上面図である。この場合、該２対の梁１８及び１８Ａは角形鋼管柱５内部で平面交差するので、梁同士１８及び１８Ａの溶接接合２１を行う。
【００２６】
実施例１１
請求項２に係る発明の方法において、図１９は、２方向とも水平で平行な２枚の鋼板の対を梁１８及び１８Ａとして、該２対の梁１８と１８Ａのせい高さを同じにして、梁１８及び１８Ａを角形鋼管柱５に貫通させ、角形鋼管柱内で２対の鋼板梁１８と１８Ａを立体交差させた場合の横断面図であり、２対の梁１８と１８Ａのうち、１対の梁の厚さ１８は他方の梁１８Ａよりも大きくして他方の梁１８Ａを立体交差させるだけの溝を作り立体交差させる。そして、２対の梁１８及び１８Ａはそれぞれ角形鋼管柱と溶接接合され、それぞれ柱間中央梁３Ｃとボルト接合又は溶接接合される。梁１８は機械加工で中央に溝を製作して梁１８Ａを通しているが、梁１８を溶接して製作しても同様の効果を得ることができる。本方法によれば、柱間の梁の梁せいが同じでも３階分の柱を切断せず１本で製作することが可能になる。
【００２７】
実施例１２
請求項２に係る発明の方法において、図２０は、２方向とも水平で平行な２枚で一対とする鋼板をそれぞれ梁１８及び１８Ａとして、該２対の梁１８と１８Ａのせいが互いに異なって、角形鋼管柱５を貫通させた場合の角形鋼管柱内部交差方法の横断面図であり、２対の梁１８及び１８Ａはそれぞれ角形鋼管柱と溶接接合され、それぞれ柱間中央梁３Ｃとボルト接合又は溶接接合される方法を示す。本方法によれば、梁せいが異なる場合でも３階分の柱を切断せず１本で製作することが可能になる。
【００２８】
実施例１３
請求項２に係る発明の方法において、図２１は、少なくとも一方が水平で平行な２枚を一対とする鋼板の梁１８で、梁３と梁１８同士が角形鋼管柱にそれぞれ貫通しその内部で交差し、２枚を一対とする鋼板の梁１８と柱間の中間のＨ形鋼梁３Ｃを角形鋼管柱５の外でボルト接合２０及びフランジ裏面肉盛後肉盛部を含めて開先加工し突合せ溶接１５した場合を示す。図２１では、柱間中央梁３Ｃをガセットプレート２２でボルトにより仮止めして梁１８と梁３Ｃのフランジ４の下側同士をボルト締めし、しかる後、図２２に示すように、フランジ端部裏面を肉盛溶接２３した後、梁フランジ４を開先加工し突合せ溶接２４し、梁１８と梁３Ｃを接合させる。このように、接合させれば、建設現場のおける請求項２の施工が極めて容易になる。
【００２９】
実施例１４
請求項２に係る発明の別の実施方法は、図２３に示すように、少なくとも一方が水平で平行な２枚を一対とする鋼板の梁１８で、梁３と１８同士が角形鋼管柱にそれぞれ貫通しその内部で交差し、２枚を一対とする鋼板の梁１８と柱間の中間のＨ形鋼梁３Ｃを角形鋼管柱５の外でボルト接合２０している例であり、図２３の右側では、梁１８とＨ形鋼梁３Ｃとが突き合わせで、これらをスプライスプレート３０で挟み込んでボルト接合させている。図２３の左側では、スプライスプレートを用いていないが、スプライスプレート３０を用いて施工した方が梁同士の製作精度が良くない場合には作業性が良くて施工上有効である。
【００３０】
実施例１５
請求項３に係る発明方法において、図２４は、裏当金１０に溶接熱で溶融される金属箔２６を取り付けた状態を示し、図２５は金属箔２６を裏当金１０に取り付け金属箔２６を一時的に折り曲げた状態を示しており、この図２５に示す状態で、図２６に示すように、金属箔２６を取り付けた裏当金１０を継手開先のギャップから挿入し、挿入完了すれば、図２７に示すように、金属箔の弾性で図２５の元の状態に戻り、裏当金１０が柱５の裏側にセットされ、この状態で柱５及び梁４Ｆと仮付け溶接した後、柱外面から継手を片側溶接で施工すれば柱梁接合部ができあがる。ここで用いる金属箔２６の厚さは２００μｍ以下が適当である。また、金属箔の変わりに、溶接熱で溶融される細いワイヤでも同様な効果が得られる。
【００３１】
実施例１６
請求項３に係る発明方法において、図３０は環状の裏当金１０に溶接熱で溶融される細い金属ワイヤ２９を取り付けた状態を示し、角形鋼管柱５の側面に図６、図１５及び図１６に示すように梁の断面形状及び本数に合わせた開口部又は溶接部分開先を付けた開口部から、該金属ワイヤ２９を把持して裏当金１０を挿入し、該開口部内面にセットし、図３１に示すように、該梁４Ｆを該角形鋼管柱開口部及び環状裏当金１０の開口部に挿入して、角形鋼管柱５の内面にセットする。そして、該柱５、該梁４Ｆ及び該裏当金１０を仮付してから継手溶接を実施する。
【００３２】
実施例１７
請求項４に係る発明方法において、角形鋼管柱５の側面に図６、図１５及び図１６に示すように梁の断面形状及び本数に合わせた開口部又は溶接部分開先を付けた開口部を設けて、該開口部に該梁を挿入し複数の梁を該角形鋼管柱の内部で交差させ、図２８に示すように該角形鋼管柱５と該梁４Ｆとを母材よりも強度の高い溶接材料を用いて、すみ肉溶接２７を実施するか、又は、図２９に示すように部分溶け込み溶接２７を突合せ溶接とすみ肉溶接の組み合わせで行い、該柱肉厚５Ｔの１０％以上、望むらくは１５％以上で２５％以下の大きいのど厚２５Ａを確保して、角形鋼管柱と梁を角形鋼管柱の外側から片側溶接する方法である。
【００３３】
実施例１８
請求項５に係る記載の発明において、角形鋼管柱５の側面に図６、図１５及び図１６に示すように梁の断面形状及び本数に合わせた開口部又は溶接部分開先を付けた開口部を設けて、図３２に示すように、該角形鋼管柱側５に開先加工２８を行ったのち、開先近傍をガス、高周波、レーザ等により加熱して開先部２８及びその近傍を該角形鋼管柱の内面方向へハンマー、プレス等により曲げ加工を行い、該開口部に該梁を挿入し複数の梁を該角形鋼管柱の内部で交差させ、該角形鋼管柱５の肉厚５Ｔの１０％以上、望むらくは１５％以上で２５％以下の大きいのど厚２５を確保して、該角形鋼管柱５と梁４Ｆを該角形鋼管柱５の外側から片側溶接する。本発明に係る方法では、突合せ溶接のほかに、突合せ溶接とすみ肉溶接の組み合わせで大きいのど厚を確保することも可能である。
【００３４】
実施例１９
請求項６に係る記載の発明において、角形鋼管柱５の側面に図６、図１５及び図１６に示すように梁の断面形状及び本数に合わせた開口部又は溶接部分開先を付けた開口部を設けて、該開口部に該梁を挿入し複数の梁を該角形鋼管柱の内部で交差させ、図３３に示すように、該開口部の該角形鋼管柱の内面側に裏当金１０を当てて、角形鋼管柱側５において表側の溶接ビード止端部の位置１５Ｔが裏面の溶接ルート部の位置１０Ａより角形鋼管柱肉厚５Ｔの８０％以上離れて位置するように溶接され且つ少なくとも裏面の溶接ビード幅１５Ａの領域における表ビード余盛り高さ１５Ｈが少なくとも該角形鋼管肉厚５Ｔの１０％以上確保され余盛りが母材表面から滑らかに変化するように、該角形鋼管柱５と該梁３を角形鋼管柱５の外側から片側溶接する。本方法によれば、実効のど厚が１０％以上大きく確保され望むらくは１５％以上で２５％以下確保され、しかも、裏面の裏当金１０の応力集中部１０Ａによる応力集中が、余盛り高さが大きいことと余盛り位置１５Ｔが該角形鋼管肉厚５Ｔの８０％以上離れて、望むらくは１００％以上で１５０％以下離れていることにより緩和され、引張力５Ｃ及び曲げモーメント５Ｂに対し、母材以上の十分な継手強度を確保することが可能である。
【００３５】
実施例２０
請求項１から６において、柱梁接合部を製作した後、柱内部にコンクリートを充填することも可能である。
【発明の効果】
本発明による効果は、従来方法に比較し次の通りである。
請求項１については、従来方法のダイアフラムが無く、従って、サイコロが無く、３階分の柱をまとめて製作できるため、小組み立て工程の省略だけでなく、中組み立ての省略ができる為、工程が簡略化され、工期の短縮と工場の省スペースが可能になる。また、従来方法に比較して溶接量が大幅に減少するので溶接歪みが少なくなる。
請求項２については、請求項１の発明の効果のほかに、梁の柱への貫通が簡略かつ容易になり、柱間の中央梁の取り付けも容易になる。
請求項３については、請求項１及び２の方法の実施において、裏当金を容易にセットすることができる。
請求項４については、請求項１及び２の方法の実施において、裏当金を省略し継手の開先加工を簡略化し、柱梁接合部の製作が容易になる。
請求項５については、請求項１及び２の方法の実施において、裏当金を省略し突合せ溶接を容易にして、継手強度を裏当金方式の継手よりも高くすることができる。
請求項５については、請求項１及び２の方法の実施において、裏当金を使用しても継手ルート部の応力集中を軽減して溶接継手強度を増加させる点などにある。
【図面の簡単な説明】
【図１】従来の角形鋼管柱を用いた柱梁接合部の立体図
【図２】従来の角形鋼管を用いた柱梁接合部の断面図
【図３】角形鋼管柱に第１プレート及び第２プレートを挿入した断面図
【図４】角形鋼管柱に第１プレート及び第２プレートを挿入し梁にスティフナーを取り付けて角形鋼管柱に溶接接合する断面図
【図５】角形鋼管柱・Ｈ形鋼梁相互貫通型の柱梁接合部の立体図
【図６】角形鋼管柱のＨ形鋼梁貫通用孔を示す立体図
【図７】Ｈ形鋼梁同士のせいが同一の場合の柱・梁相互貫通型の柱梁接合部の上面図
【図８】Ｈ形鋼梁同士のせいが同一の場合の角形鋼管柱内での梁の交差を示す正面図
【図９】梁同士のせいが同一で２方向にしか梁がのびていない場合の柱・梁相互貫通型の柱梁接合部の上面図
【図１０】梁同士のせいが異なる場合の角形鋼管柱内の梁の交差を示す正面図
【図１１】一方が水平で平行な２枚を一対とする鋼板の梁で、他方がＨ形鋼梁の双方が角形鋼管柱に貫通しその内部で交差し、柱貫通の梁と柱間の中央梁と梁せいが同じで、２枚を一対とする鋼板の梁と柱間の中間のＨ形鋼梁を柱の外で溶接接合した場合の正面図
【図１２】図１１の上面図
【図１３】一方が水平で平行な２枚を一対とする鋼板の梁で、他方がＨ形鋼梁の双方が角形鋼管柱に貫通しその内部で交差し、柱貫通の梁と柱間の中央梁と梁せいが同じで、２枚を一対とする鋼板の梁と柱間の中間のＨ形鋼梁を柱の外でボルト接合した場合の正面図
【図１４】図１３の上面図
【図１５】Ｈ形鋼梁及び２枚を一対とする鋼板の梁１本に対する角形鋼管柱の貫通孔を示す立体図
【図１６】Ｈ形鋼梁及び２枚を一対とする鋼板の梁２本に対する角形鋼管柱の貫通孔を示す立体図
【図１７】２方向とも水平で平行な２枚の鋼板の対を梁として角形鋼管柱を貫通させた場合の外観図
【図１８】２方向とも水平で平行な２枚の鋼板の対を梁として、該２対の梁の高さを同じにして、角形鋼管柱を貫通させた場合の上面図
【図１９】２方向とも水平で平行な２枚の鋼板の対を梁として、該２対の梁のせい高さを同じにして、角形鋼管柱を貫通させ、角形鋼管柱内で２対の鋼板梁を立体交差させた場合の横断面図
【図２０】２方向とも水平で平行な２枚で一対とする鋼板を梁として、直交する梁のせいが異なる場合に、角形鋼管柱を貫通させた場合の角形鋼管柱内部交差方法の横断面図
【図２１】少なくとも一方が水平で平行な２枚を一対とする鋼板の梁で、梁同士が角形鋼管柱に貫通しその内部で交差し、２枚を一対とする鋼板の梁と柱間の中間のＨ形鋼梁を柱の外でボルト接合及びフランジ裏面肉盛後開先加工し突合せ溶接した場合の正面図
【図２２】開先予定部端部裏面に肉盛溶接して肉盛部を含めて開先加工して、継手溶接した場合の横断面図
【図２３】水平で平行な２枚で一対とする鋼板を梁として用い、柱外面に突出した部分を柱間中央の梁とボルト接合した場合の横断面図
【図２４】金属箔を裏当金に取り付けた状態の断面図
【図２５】金属箔を裏当金に取り付け金属箔を折り曲げた状態の断面図
【図２６】金属箔を取り付けた裏当金を継手開先のギャップから挿入する状態の断面図
【図２７】金属箔を取り付けた裏当金を継手開先のギャップから挿入して開先裏面にセットした状態の断面図
【図２８】梁フランジ４と柱５とを高強度溶接材料ですみ肉溶接した状態の断面図
【図２９】柱５に部分開先を取り、梁フランジ４と柱５とを高強度溶接材料で部分溶け込み溶接した状態の断面図
【図３０】環状の裏当金に細い金属ワイヤを取り付けた状態
【図３１】環状の裏当金に細い金属ワイヤを取り付けて、該裏当金を柱内面にセットして梁又は梁フランジを挿入した状態
【図３２】柱開先先端部を加熱し柱内面側に曲げ加工して、柱肉厚以上の開先深さを得て、柱肉厚以上の実効のど厚を得る方法の説明断面図
【図３３】表側ビード幅を広げた場合の継手形状の横断面図
【符号の説明】
１建築鉄骨柱梁接合部のダイアフラム
１Ａダイアフラムの傘折れ状態
２ダイアフラム間の角形鋼管。１と２から構成される部材をサイコロという。
３Ｈ形鋼梁
３Ａ長手方向に分割した場合のＨ形鋼梁
３Ｂ長手方向の中央部でウエブを除去したＨ形鋼梁
３Ｃ柱間の中央梁
３Ｔ柱間の中央梁のフランジ肉厚
４Ｈ形鋼梁フランジ
４ＡＨ形鋼梁で上下に広げられたフランジ
４ＦＨ形鋼梁、Ｈ形鋼梁フランジ、及び、２枚を一対とする鋼板の梁の総称
５角形鋼管による柱
５Ａ角形鋼管による柱の辺の長さ
５Ｂ曲げモーメント
５Ｃ引張力
５Ｐ円形鋼管による柱
５Ｔ角形鋼管による柱の肉厚
６角形鋼管とダイアフラムとの溶接
７梁フランジとダイアフラムとの溶接
８仮付又は組立溶接
９Ｈ形鋼梁ウエブ
１０裏当金
１１スカラップ
１２プレート１
１３プレート２
１４水平スティフナー
１５角形鋼管柱と梁との溶接
１５Ａ裏ビード幅
１５Ｂ裏ビード止端部からの表ビード延長長さ
１５Ｈ裏ビード止端部位置における表ビードの高さ
１５Ｔ表ビード延長部の止端部
１６ボルト接合用の孔
１７Ｈ形鋼梁貫通用の角形鋼管柱側面の開口部
１７Ａ２枚を一対とする鋼板の梁貫通用の角形鋼管柱側面開口部
１８水平で平行な２枚で一対の鋼板梁
１８Ａ水平で平行な２枚で一対のもう一つの鋼板梁
１９水平で平行な２枚で一対の鋼板梁と柱間中央梁との溶接
２０ボルト接合
２１角形鋼管柱内の梁交差部の溶接
２２ガセットプレート
２３肉盛溶接
２４突合せ溶接
２５実効のど厚
２５Ａのど厚
２６金属箔
２７高強度すみ肉溶接
２８開先
２９金属ワイヤ
３０スプライスプレート[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an architectural steel structure in which an H-shaped steel beam or a pair of two parallel steel plates is passed through a square steel pipe column and intersected inside the square steel pipe column at a beam-to-column joint of a building steel structure. The present invention relates to a technical method for manufacturing a steel structure.
[0002]
[Prior art]
In the prior art, as shown in FIG. 1, the beam-column joint portion of the building steel structure is formed as a dice by performing welding 6 between a diaphragm 1 made of a steel plate and a short square steel pipe 2. In many cases, the steel beam flange 4 is welded and joined, and the dice and the square steel pipe column 5 are welded and joined. In this prior art, as shown in FIG. 2, a weld 6 between a dice square steel pipe 2 and a diaphragm 1 and a weld 7 between a dice diaphragm 1 and an H-shaped steel beam flange 4 are welded on one side using a backing metal 10. Has been implemented in. In the conventional welding method of the diaphragm 1 and the beam flange 4, the end of the flange 4 to be joined is grooved, and then the backing metal 10 is manufactured and the temporary welding 8 for attaching the backing metal is performed. Welding 7 is performed. In addition, the welding of the diaphragm 1 and the square steel pipe 2 or 5 is also performed by performing the groove processing of the joining end of the square steel pipe 2 or 5, followed by the production of the backing metal 10 and the temporary welding 8 for attaching the backing metal. The main welding 6 of the diaphragm 1 and the square steel pipe 2 or 5 is performed.
[0003]
On the other hand, as shown in FIG. 3, Japanese Patent Application No. 10-204828 discloses a beam-to-column joining method that improves the concrete filling property of the steel pipe column 5 and can easily join the beam to the column. In this method, the first plate 12 and the second plate 13 penetrating the pillar 5 are vertically pierced one by one so as to facilitate the filling of the concrete, and as shown in FIG. The first plate 12 and the second plate 13 which are bolted 20 are not directly welded to the column 5. As shown in FIG. 4, in order to join the beam 3C to the column 5, the horizontal stiffener 14 is attached to the beam 3C by welding, and then the beam 3C is welded to the column 5 through this stiffener.
[0004]
[Problems to be solved by the invention]
Most of the conventional building steel beam-column joints are manufactured with the dice shown in FIG. 1, and the columns and beams are welded and joined via the dice. Made. In the conventional method, as shown in FIG. 2, the number of members such as the diaphragm 1, the square steel pipe 2, the backing metal 10, and the end tab is large, and the weld 6 circulates around the square steel pipe 2 and the welding amount is large. For this reason, there is a problem that the cost for manufacturing the parts is increased, and the end of the diaphragm is bent after the dice are manufactured, so that a so-called umbrella folding phenomenon occurs, and a difference between the diaphragm and the beam flange is likely to occur. In addition, attaching the backing metal 10 to the inner periphery of the end portion of the square steel pipe 2 and performing the temporary welding 8 requires labor and cost. Further, since the welding 6 of the square steel pipe 2 and the diaphragm 1 is performed over the entire circumference, not only the welding residual stress is increased due to the large amount of welding, but if the backing metal 10 is used, the backing metal 10 and the member 1 Notches are formed between 2, 4 and 5, stress concentration occurs, resulting in a weakening of the strength.
[0005]
On the other hand, in Japanese Patent Application No. 10-204828, as shown in FIG. 3, the load applied to the H-shaped steel beam 3C is applied from the H-shaped steel beam web 9 to the column 5 via the plate 12 or 13, but one H It is a single vertical plate without a flange with respect to the shaped steel beam 3C, the plate and the column body are not welded, and the intersection of the plates 12 and 13 in the column 5 is a groove for intersection. Or there is a notch, and the H-shaped steel beam flange 4 hardly contributes to the load transmission to the column 5. Therefore, the strength of the joint between the H-shaped steel beam 3C and the square steel pipe column 5 is not sufficient for axial load, vertical bending, side bending, and torsion. In FIG. 4, in order to compensate for this lack of strength, a stiffener 14 is attached to the side surface of the beam flange 4, and the H-shaped steel beam flange 4 is welded to the square steel pipe column 5 via the stiffener 14. Even in this case, the inside of the square steel pipe column 5 that receives the load of the H-shaped steel beam 3C is hollow or filled with concrete, and the side wall of the column 5 cannot withstand the tensile or bending load of the beam flange 4 greatly. The square steel pipe column 5 cannot sufficiently receive various loads applied to the H-shaped steel beam 3C due to an earthquake or the like. There is one plate 12 and 13 for one H-shaped steel beam, and further, welding is not performed at the penetrating portions of the plates 12 and 13 of the rectangular steel pipe column 5 to the rectangular steel pipe column 5, so that the H-shaped steel beam As for the load related to 3C, the load is not transmitted to the square steel pipe column 5 through the plate, and a hole is opened on the side surface of the square steel pipe column 5, and the bending load and the compressive load applied to the square steel pipe column 5 are There exists a problem that the intensity | strength of the square steel pipe column 5 falls. On the other hand, when the stiffener is attached to the H-shaped steel beam flange 4, the material and production of the stiffener are required, which increases the cost.
[0006]
【the purpose】
The present invention simplifies the structure of column-beam joints of architectural steel structures, thereby reducing the stress concentration and improving the weld joint strength, and reducing the welding amount of the weld joint to reduce the production cost. It aims at reducing.
[0007]
[Means for Solving the Problems]
In order to solve these problems, we first studied to omit the diaphragm in order to reduce the welding amount. In this case, however, the square steel pipe column is hollow, so the strength is insufficient. . Therefore, as a result of various researches, while inserting a short H-shaped steel beam into a through hole opened to resemble a beam cross-sectional shape at a beam connecting portion of a rectangular steel pipe column and projecting the H-shaped steel beam from the square steel tube column, Short H-beams penetrating perpendicularly to each other inside a square steel pipe column A small beam is passed through a large beam with the web removed. Cross Or weld the penetrating beams together, In addition, if the H-shaped steel beam and the rectangular steel pipe column are welded and joined, and a short H-shaped steel beam passing through the column and a central H-shaped steel beam between the columns are bolted together, a steel structure can be constructed. As a result, it was found that even if the diaphragm is omitted, the load applied to the beam is sufficiently transmitted to the square steel pipe column.
[0008]
If a long H-shaped steel beam is inserted into a through-hole opened at the beam connection point of a square steel pipe column and welded in place of the short H-shaped steel beam, the number of welded joints or bolt joints between the columns is reduced. I also found it possible.
[0009]
Also, instead of at least one of the short H-shaped steel beams, a pair of horizontal and parallel steel plates are replaced with a pair of steel plates and inserted into through-holes opened at the beam connecting portions of the square steel pipe columns, respectively. After the beams in pairs intersect each other inside the square steel pipe column, all the through beams and the square steel pipe column are welded and joined to the outside of the square steel pipe column. The H-shaped steel beam joined to the steel plate does not face the column If each steel beam is made by welding or bolting each through beam to the H-shaped steel beam flange in the middle of the column, it will be easier than penetrating the H-shaped steel beam through the square steel tube column, and the diaphragm will be omitted. However, it was found that the load applied to the beam was sufficiently transmitted to the square steel pipe column.
[0010]
Therefore, in the invention according to claim 1, in the column beam joint portion of the building steel structure, first, the configuration of the invention includes a plurality of through-holes opened to resemble the cross-sectional shape of the beam at the beam connection planned location of the square steel pipe column. The H-shaped steel beam is inserted into the rectangular steel pipe column from the direction perpendicular to each other. A small beam is passed through a large beam with the web removed. Cross Or weld through beams The next configuration is to directly weld and join the H-shaped steel beam and the rectangular steel pipe column, and by these configurations, a method of manufacturing a steel structure by intersecting the H-shaped steel beam inside the column. It is. If this method is used, even if the diaphragm is omitted, since the beam penetrates the square steel pipe column and is welded, the load applied to the beam is sufficiently transmitted to the square steel tube column. The novelty of the present invention is that the diaphragm is omitted and the H-shaped steel beam itself is made to penetrate the through-hole opened in the rectangular steel pipe column so as to resemble the cross-sectional shape of the beam, and all of the H-shaped steel pipe columns penetrated through the rectangular steel pipe column are used. It is to obtain a strong column beam joint by directly welding and joining the beam.
[0011]
In the invention according to claim 2, in the column beam joint portion of the building steel structure, the configuration of the invention is first to make at least one of the beams a pair of two steel plates that are relatively short, horizontal and parallel. In the following configuration, an H-shaped steel beam or a beam composed of a pair of two parallel steel plates is included in a through hole opened to resemble the beam cross-sectional shape at a predetermined beam connecting portion of a square steel pipe column. All the beams are to be inserted, and the next configuration is to intersect the pair of beams of the steel plate and the other beam penetrating the column inside the square steel pipe column,
The next configuration is to weld all the beams penetrating the column and the square steel pipe column, and the next configuration is the outside of the square steel tube column. The H-shaped steel beam joined to the steel plate does not face the column At least a pair of beams of the steel plate and an H-shaped steel beam in the center between the columns Welded joint Or the operation of joining the through beam and the lower flange of the center H-shaped steel beam between the columns with the bolt, and performing the groove processing by overlay welding on the rear surface of the end of the upper flange of the center beam between the columns. After that, it is to combine the operation of welding with the penetration beam. With these configurations, the steel frame structure is manufactured by crossing the pair of steel plate beams and the H-shaped steel beam, or by crossing the pair of steel plate beams inside the column. In the method according to the present invention, in the method according to claim 1, at least one of the H-shaped steel beams penetrating the rectangular steel pipe column is replaced with a pair of steel beams that are relatively short, horizontal and parallel. It is characterized by. When the steel plate beam intersects with another beam in the square steel pipe column, the end portion protrudes from the square steel tube column, and the vertical distance between the pair of steel plate beams is set to the extent of the H-shaped steel beam at the center between the columns, The width in the left-right direction of the steel plate beam is not particularly limited, but is usually about the width of the H-shaped steel beam flange, and the plate thickness of the steel plate beam is usually larger than the thickness of the H-shaped steel beam flange. The novelty of the present invention is that the diaphragm is omitted and the H-shaped steel beam itself is penetrated through the square steel pipe column and welded, and the H-shaped steel beam is replaced with a pair of horizontal and parallel steel plate beams. For example, a square steel pipe column and all the penetrated beams are directly welded. The intersection of the beams in the square steel pipe column is continuous with at least the flange part, and it is also characterized by having sufficient strength against external loads on the square steel pipe column and beam.
[0012]
Claim 1 Or In the invention according to claim 2, when butt welding of complete penetration is stably performed by one-side welding from the outer surface of the square steel pipe column by joining the square steel pipe column and a short beam passing through the square steel pipe column, Therefore, it is necessary to apply a backing metal to the inner surface side of the rectangular steel pipe column of the opening. In the invention according to claim 3, the configuration of the invention is first of the side surface of the rectangular steel pipe column. An opening according to the cross-sectional shape and the number of beams or an opening with a welding groove is provided at a predetermined position, the beam is inserted into the opening, and a plurality of beams intersect within the rectangular steel pipe column. In the following configuration, a backing metal is inserted from the outside of the rectangular steel pipe column through the opening to the inner surface side of the rectangular steel pipe column of the opening using a thin wire or foil that is melted by welding heat. With these configurations, the square steel pipe column and the beam are It is a method of one side welding from outside in the form steel column. The novelty of the present invention is that, in addition to the point that the beam is passed through the rectangular steel pipe column, the beam is crossed inside the rectangular steel pipe column, and the column beams are directly butt welded to each other, A back metal is inserted and set using a thin wire or foil melted by welding heat on the inner surface side of the rectangular steel pipe column of the opening through the opening from the outside.
[0013]
In the inventions according to claim 1 and claim 2, if the backing metal is omitted in the joining of the square steel pipe column and the short beam passing through the square steel pipe column, the weldability is remarkably improved. In the invention, the invention is configured by first providing an opening with a welded groove or an opening in accordance with the cross-sectional shape and number of beams at a predetermined position on the side surface of the square steel pipe column, and inserting the beam into the opening. A plurality of beams intersecting the inside of the rectangular steel pipe column, and the following structure is used when the two are welded from the outer surface of the rectangular steel pipe column by one side fillet welding or by partial penetration butt welding. This is to perform fillet welding or partial penetration welding of a rectangular steel pipe column and the beam with a welding material having a strength higher than that of the base metal. In the following configuration, the throat is 10% or more larger than the thickness of the column during welding. It is to secure the thickness. The novelty of the present invention is a combination of a beam-to-column joint structure in which columns and beams are crossed, and fillet welding or partial penetration welding with a welding material having a higher strength than the base material. In this welding, a throat thickness of 10% or more of the square steel pipe column wall thickness is secured. That is, in the manufacture of a column-beam joint structure in which a column and a beam are crossed, a high-strength welding material and a large throat thickness are used in fillet welding or partial penetration welding to improve welding workability and ensure joint strength. There is a special feature.
[0014]
Claim 1, Or In the invention according to No. 2, in order to enable butt welding even if the backing metal is omitted, the invention according to Claim 5 is the first aspect of the invention. The next configuration is to perform groove processing on the square steel pipe column side by providing openings according to the number, and the next configuration is to heat the vicinity of the groove so that the groove portion and the vicinity thereof are Bending is performed in the direction of the inner surface of the square steel pipe column, and the next configuration is to insert the beam into the opening and to intersect a plurality of beams inside the square steel tube column. Is to secure a throat thickness that is 10% or more larger than the thickness of the square steel pipe column and weld the square steel pipe column and the beam from one side to the other side of the square steel pipe column. The novelty of the present invention combines a beam-column joint structure in which a column and a beam are crossed, and a groove processing is performed on the square steel pipe column side, and the groove portion and its vicinity are heated and bent. In particular, in such welding, a throat thickness that is 10% or more of the square steel pipe column wall thickness is secured by welding.
[0015]
Claim 1 Or In the invention according to claim 2, when carrying out butt welding with full penetration by joining a rectangular steel pipe column and a short beam penetrating the rectangular steel pipe column, it is necessary to carry out one-side welding from the outer surface of the rectangular steel pipe column. In the invention according to claim 6, the configuration of the invention is to first provide an opening with a welded groove or an opening according to the cross-sectional shape and number of beams on the side surface of the square steel pipe column. Each of the beams is inserted and a plurality of beams are crossed inside the rectangular steel pipe column, and the following configuration is applied by applying a backing metal to the inner surface side of the rectangular steel pipe column of the opening. The weld bead toe portion on the front side is positioned 80% or more of the square steel pipe column wall thickness away from the position of the weld root portion on the back surface. Surface bead surplus in the region of the weld bead width Is to secure at least 10% of the thickness of the rectangular steel pipe column and to allow the surplus to smoothly change from the surface of the base material. With these configurations, the rectangular steel pipe column and the beam are connected to each other. It is the method of one-side welding from the outside. The novelty of the present invention is that, in addition to the point that the beam is passed through the rectangular steel pipe column, the beam is crossed inside the rectangular steel tube column, and the column beams are directly butt welded to each other, the bead width of the welded portion is widened and The extra height is increased to reduce the stress concentration in the joint root portion, thereby increasing the weld joint strength.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Example 1
In the method according to the first aspect of the present invention, as shown in FIG. 6, a through-opening opened in the side surface of the square steel pipe column 5 to resemble the cross-sectional shape of the H-shaped steel beam at the beam-column joint of the building steel structure. The portion 17 is provided at a position where the H-shaped steel beam is to be attached by gas cutting, plasma cutting, laser cutting, or the like, and then, as shown in a three-dimensional view of FIG. A plurality of H-shaped steel beams 3 are inserted into the through-holes 17 shown in FIG. 3 and intersected inside the rectangular steel pipe column 5, and the rectangular steel pipe column 5 and the H-shaped steel beam 3 are joined by butt welding or fillet welding. To make a steel structure. According to this method, it is possible to produce a single column without cutting the pillars for the third floor when the beams are different.
[0017]
Example 2
In the method according to the first aspect of the present invention, it is difficult for the H-shaped steel beams having the same beam crossing perpendicular to each other to make a three-dimensional crossing within the square steel pipe column, and only a plane crossing is possible. In that case, in the method of the invention according to claim 1, as shown in FIG. 7, one H-shaped steel beam 3 A is divided into two in the longitudinal direction, and is opened at the beam connection planned location of the square steel pipe column 5. Each of the penetrating H-shaped steel beams 3 and 3A and the square steel pipe column 5 are welded to each other after being inserted into the through holes and welded 21 to the other penetrating H-shaped steel beam 3 inside the square steel pipe column 5. 15 to make a steel structure.
[0018]
Example 3
In the method of the invention according to claim 1, FIG. 8 shows one of the three-dimensional crossing of H-shaped steel beams having the same cause perpendicular to each other. In FIG. 8, one H-shaped steel beam 3B is inserted through the through hole of the square steel pipe column 5 by removing the web at the center in the longitudinal direction, and the other H-shaped steel beam 3 is inserted through the square steel tube column 5. In this method, the web portion removed through the hole is crossed by forced deformation of the flange portion 4A. In this case, one H-shaped steel beam flange 4 is bent up and down like the flange 4A, but before the other H-shaped steel beam 3 intersects, the flange of the portion from which the web of the H-shaped steel beam 3B is removed is preliminarily formed. A method of heating is also effective. In the case of the present embodiment, since it is not necessary to weld the beams in the square steel pipe column at the intersection, it is possible to attach the H-shaped steel beam to a plurality of floors with the same single square steel pipe column. According to this method, even if the beam is the same, it is possible to produce one piece without cutting the pillars for the third floor.
[0019]
Example 4
In the method of the invention according to claim 1, FIG. 9 shows one of the methods in which the H-shaped steel beams having the same fault perpendicular to each other cross the plane when the beams extend only in two directions from the column. In this case, the beams are welded 21 in the square steel pipe column, and at least one beam penetrates both sides of the column.
[0020]
Example 5
In the method of the invention according to claim 1, when the plurality of H-shaped steel beams penetrating the square steel pipe column are different, as shown in FIG. The web is removed so that the smaller H-shaped steel beam passes through the center of the steel tube and inserted through the through hole of the rectangular steel pipe column 5, and the other smaller H-shaped steel beam 3 is inserted into the through hole of the rectangular steel tube column 5. In addition, the H-shaped steel beam from which the web is removed is passed through and intersected. In the case of the present embodiment, since it is not necessary to weld the beams in the square steel pipe column at the intersection, it is possible to attach the H-shaped steel beam to a plurality of floors with the same single square steel pipe column.
[0021]
Example 6
In the method of the invention according to claim 1, if the length of the H-shaped steel beam 3 penetrating the square steel pipe column 5 is set to a relatively short dimension, a bolt hole 16 is formed at the end of the through beam as shown in FIG. It is possible to open and bolt the H-shaped steel center beam between columns. Moreover, if this penetration beam is lengthened, the central beam between columns can be omitted.
[0022]
Example 7
In the method of the invention according to claim 2, in FIGS. 11 and 12, one of the beams is a pair of horizontal and parallel steel beams 18 and the other is an H-shaped steel beam 3. Beams 18 and 3 are respectively inserted into the through holes 17 and 17A shown in FIG. 15 opened in the beam connecting portion of the steel plate, and the pair of beams 18 and the other beam 3 of the steel plate are crossed inside the square steel pipe column. 1 shows a method of manufacturing a steel structure by welding and joining all the through-beams 18 and 3 and the square steel pipe column 5 to each other. Further, the through-beam 18 is arranged between the columns outside the square steel pipe column 5. A method for manufacturing a steel structure by welding 19 to the central H-shaped steel beam flange 4 will be described. When the through-beam 18 is welded to the inter-column center H-shaped steel beam flange 4, in addition to the fillet front welding shown in FIG. 11, the through-beam 18 is side-welded to the inter-column center H-shaped steel beam flange 4. If this is implemented, a stronger joint can be obtained. Since the beam 18 does not have a web, it is effective to increase the thickness or the strength of the flange 4 of the H-shaped steel beam 3 in order to ensure the strength or rigidity of the beam. is there. According to this method, it is possible to manufacture three columns for a single column even if the beams between the columns are the same.
[0023]
Example 8
As shown in FIGS. 13 and 14 by using the bolt holes 16 of FIGS. 12 and 14 instead of the welding joint between the through beam 18 and the inter-column center H-shaped steel beam flange 4 in the seventh embodiment, Bolt joint 20 may be used. The bolted joint 20 has a feature that it is not easily affected by the weather at the construction site like welding.
[0024]
Example 9
In the method of the invention according to claim 2, in FIG. 17, a pair of steel plates 18 and 18 </ b> A of a pair of steel plates are formed in two horizontal directions in both directions of the beam, and the beam connection portion of the rectangular steel pipe column 5 is opened. The beams 18 and 18A are inserted into the through-holes 17A shown in FIG. 5A, the pair of beams 18 and 18A of the steel plate are crossed inside the rectangular steel pipe column, and the through-beams 18 and 18A and the rectangular steel pipe column 5 are welded. If the hole 16 for bolt joining attached to the edge part of the beam 18 of a pair of steel plate with the two sheets of FIG. 17 shown in FIG. 17 is used on the outside of the square steel pipe column 5 as in FIG. A method of producing a steel structure by bolting 20 the through beams 18 and 18A and the inter-column center H-shaped steel beam flange 3C will be described.
[0025]
Example 10
In the method of the invention according to claim 2, FIG. 18 shows that a pair of two steel plates that are horizontal and parallel in both directions are beams 18 and 18A, and the two pairs of beams 18 and 18A have the same height. It is a top view at the time of making the square steel pipe pillar 5 penetrate. In this case, since the two pairs of beams 18 and 18A intersect with each other in a plane inside the square steel pipe column 5, a welded joint 21 between the beams 18 and 18A is performed.
[0026]
Example 11
In the method of the invention according to claim 2, FIG. 19 shows a pair of two steel plates that are horizontal and parallel in both directions as beams 18 and 18A, and the two pairs of beams 18 and 18A have the same height. The beams 18 and 18A are penetrated through the square steel pipe column 5, and two pairs of steel plate beams 18 and 18A are three-dimensionally crossed in the square steel pipe column, and of the two pairs of beams 18 and 18A, The thickness 18 of the pair of beams is made larger than that of the other beam 18A so as to form a groove that allows the other beam 18A to be three-dimensionally crossed. The two pairs of beams 18 and 18A are welded to the square steel pipe columns, respectively, and are bolted or welded to the inter-column center beam 3C. The beam 18 is machined to form a groove in the center and is passed through the beam 18A. However, the same effect can be obtained even if the beam 18 is manufactured by welding. According to this method, even if the beams between the columns are the same, it is possible to manufacture the columns for the third floor without cutting them.
[0027]
Example 12
In the method of the invention according to claim 2, FIG. 20 shows two steel plates 18 and 18A, which are parallel and parallel in two directions, as beams 18 and 18A, respectively, and the two pairs of beams 18 and 18A are different from each other. FIG. 2 is a transverse cross-sectional view of the method of intersecting a square steel pipe column when the square steel pipe column 5 is penetrated, and two pairs of beams 18 and 18A are welded to the square steel pipe column, respectively, and a center beam 3C between the columns and a bolt are joined together. Or the method of welding is shown. According to this method, even if the beams are different, it is possible to manufacture one column without cutting the pillars for the third floor.
[0028]
Example 13
In the method according to the second aspect of the present invention, FIG. 21 is a steel plate beam 18 in which at least one is a pair of two horizontal and parallel plates. Intersecting and forming a pair of two steel beams 18 and an intermediate H-shaped steel beam 3C between the columns outside the square steel pipe column 5 including a bolted joint 20 and a built-up portion after overlaying the flange back surface A case where butt welding 15 is performed is shown. In FIG. 21, the inter-column center beam 3C is temporarily fixed with a gusset plate 22 with bolts, and the lower side of the flange 18 of the beam 18 and the beam 3C is bolted to each other. Then, as shown in FIG. After overlay welding 23 on the back surface, the beam flange 4 is grooved and butt welded 24 to join the beam 18 and the beam 3C. Thus, if it joins, construction of Claim 2 in a construction site will become very easy.
[0029]
Example 14
As shown in FIG. 23, another embodiment of the invention according to claim 2 is a steel plate beam 18 in which at least one is a pair of two horizontal and parallel plates, and the beams 3 and 18 are square steel pipe columns. FIG. 23 shows an example in which a steel plate beam 18 and a H-shaped steel beam 3C in the middle between two columns are joined by bolting 20 outside the square steel pipe column 5 and penetrated and intersected inside. On the right side, the beam 18 and the H-shaped steel beam 3C are butted together and are sandwiched by the splice plate 30 to be bolted together. On the left side of FIG. 23, the splice plate is not used. However, when the construction accuracy using the splice plate 30 is not good, the workability is good and the construction is effective.
[0030]
Example 15
In the inventive method according to claim 3, FIG. 24 shows a state in which a metal foil 26 to be melted by welding heat is attached to the backing metal 10, and FIG. 25 attaches the metal foil 26 to the backing metal 10. 25 is temporarily bent, and in the state shown in FIG. 25, as shown in FIG. 26, the backing metal 10 attached with the metal foil 26 is inserted from the gap of the joint groove, and the insertion is completed. For example, as shown in FIG. 27, the metal foil returns to the original state of FIG. 25 due to the elasticity of the metal foil, and the backing metal 10 is set on the back side of the column 5, and after this is tack-welded to the column 5 and the beam 4F If a joint is constructed from the outer surface of the column by one-side welding, a column beam joint is completed. The thickness of the metal foil 26 used here is suitably 200 μm or less. The same effect can be obtained with a thin wire melted by welding heat instead of the metal foil.
[0031]
Example 16
In the invention method according to claim 3, FIG. 30 shows a state in which a thin metal wire 29 to be melted by welding heat is attached to the annular backing metal 10, and FIG. 6, FIG. 15 and FIG. As shown in FIG. 16, the metal wire 29 is gripped from the opening according to the cross-sectional shape and the number of the beams or the opening provided with the welded portion groove, and the backing metal 10 is inserted and set on the inner surface of the opening. Then, as shown in FIG. 31, the beam 4 </ b> F is inserted into the square steel pipe column opening and the opening of the annular backing metal 10 and set on the inner surface of the square steel pipe column 5. Then, joint welding is performed after temporarily attaching the pillar 5, the beam 4 </ b> F, and the backing metal 10.
[0032]
Example 17
In the invention method according to claim 4, an opening having an opening or a welded portion groove according to the cross-sectional shape and number of beams as shown in FIGS. 6, 15, and 16 is provided on the side surface of the square steel pipe column 5. Provided, the beam is inserted into the opening, and a plurality of beams intersect with each other inside the square steel pipe column. As shown in FIG. 28, the square steel pipe column 5 and the beam 4F are stronger than the base metal. Fillet welding 27 is performed using a welding material, or partial penetration welding 27 is performed by a combination of butt welding and fillet welding as shown in FIG. 29, and 10% or more of the column wall thickness 5T is desired. Raku is a method in which a large throat thickness 25A of 15% or more and 25% or less is secured and the square steel pipe column and the beam are welded on one side from the outside of the square steel pipe column.
[0033]
Example 18
6. The invention according to claim 5, wherein the square steel pipe column 5 is provided with an opening or a welded portion groove in accordance with the cross-sectional shape and number of beams as shown in FIGS. As shown in FIG. 32, after performing the groove processing 28 on the square steel tube column side 5, the vicinity of the groove is heated by gas, high frequency, laser, etc. Bending to the inner surface of the square steel pipe column with a hammer, press or the like, inserting the beam into the opening, crossing the plurality of beams inside the square steel pipe column, and increasing the thickness 5T of the square steel pipe column 5 A large throat thickness 25 of 10% or more, preferably 15% or more and 25% or less is secured, and the square steel pipe column 5 and the beam 4F are welded on one side from the outside of the square steel pipe column 5. In the method according to the present invention, in addition to butt welding, a large throat thickness can be ensured by a combination of butt welding and fillet welding.
[0034]
Example 19
In the invention according to claim 6, an opening having an opening or a welded portion groove according to the cross-sectional shape and number of beams as shown in FIGS. 6, 15, and 16 on the side surface of the square steel pipe column 5. The beam is inserted into the opening and a plurality of beams intersect with each other inside the rectangular steel pipe column, and as shown in FIG. 33, a backing metal 10 is provided on the inner surface side of the rectangular steel tube column. And at the square steel pipe column side 5, the front side weld bead toe position 15T is welded so as to be located 80% or more of the square steel pipe column wall thickness 5T from the position 10A of the welding root part on the back side, and at least The square steel pipe column 5 and the back bead height 15H in the region of the weld bead width 15A on the back surface are secured at least 10% of the square steel pipe wall thickness 5T and the surplus changes smoothly from the base metal surface. The beam 3 is separated from the outside of the square steel pipe column 5 Welding to. According to this method, the effective throat thickness is ensured to be larger by 10% or more, and preferably from 15% to 25%, and the stress concentration by the stress concentration portion 10A of the backing metal 10 on the back surface is increased. Is relieved by the fact that the height 15T is more than 80% of the square steel pipe wall thickness 5T, preferably more than 100% and less than 150%, with respect to the tensile force 5C and bending moment 5B. It is possible to ensure sufficient joint strength over the base material.
[0035]
Example 20
In Claims 1 to 6, it is also possible to fill the inside of the column with concrete after the column beam joint is manufactured.
【The invention's effect】
The effect by this invention is as follows compared with the conventional method.
With respect to claim 1, since there is no diaphragm of the conventional method, and there is no dice, and the pillars for three floors can be manufactured together, not only the small assembly process can be omitted, but the intermediate assembly can be omitted, Simplified, shortening the construction period and saving the factory space. Further, since the welding amount is significantly reduced as compared with the conventional method, welding distortion is reduced.
As for claim 2, in addition to the effect of the invention of claim 1, the penetration of the beam into the column is simplified and facilitated, and the attachment of the central beam between the columns is facilitated.
As for claim 3, in the implementation of the method of claims 1 and 2, the backing metal can be easily set.
With respect to claim 4, in the implementation of the method of claims 1 and 2, the backing metal is omitted, the groove processing of the joint is simplified, and the manufacture of the column beam joint is facilitated.
With respect to claim 5, in the implementation of the methods of claims 1 and 2, the backing metal is omitted, butt welding is facilitated, and the joint strength can be made higher than that of the backing metal type joint.
The fifth aspect is that, in the implementation of the methods of the first and second aspects, even if a backing metal is used, the stress concentration in the joint root portion is reduced and the weld joint strength is increased.
[Brief description of the drawings]
1 is a three-dimensional view of a beam-column joint using a conventional square steel pipe column.
2 is a cross-sectional view of a beam-column joint using a conventional square steel pipe.
FIG. 3 is a sectional view in which a first plate and a second plate are inserted into a square steel pipe column.
FIG. 4 is a cross-sectional view in which a first plate and a second plate are inserted into a square steel pipe column and a stiffener is attached to the beam and welded to the square steel pipe column.
[Fig.5] Solid view of a joint between a rectangular steel pipe column and an H-shaped steel beam interpenetrating column beam
FIG. 6 is a three-dimensional view showing a hole for penetrating an H-shaped steel beam in a square steel pipe column.
FIG. 7 is a top view of a column-beam inter-column-column joint when the H-beams are the same
FIG. 8 is a front view showing crossing of beams in a square steel pipe column when the H-beams are the same.
FIG. 9 is a top view of a column-to-beam through-column joint where the beams are the same and the beams extend only in two directions.
FIG. 10 is a front view showing the crossing of beams in a rectangular steel pipe column when the beams are different from each other.
[Fig. 11] One is a pair of horizontal and parallel steel plate beams, and the other is an H-shaped steel beam, both of which penetrate through a square steel tube column and intersect inside. Front view when the beam of the center beam is the same as the beam and the H-shaped steel beam in the middle between the beam of the steel plate and two columns is welded outside the column
12 is a top view of FIG.
[Fig. 13] One is a pair of horizontal and parallel steel plate beams, and the other is an H-shaped steel beam, both of which penetrate through a square steel tube column and intersect inside. Front view of the case where the center beam is the same as the beam and the H-shaped steel beam in the middle between the column and the steel beam is paired with bolts outside the column.
14 is a top view of FIG. 13;
FIG. 15 is a three-dimensional view showing a through hole of a square steel pipe column for one H-shaped steel beam and one steel beam made of two steel plates.
FIG. 16 is a three-dimensional view showing a through-hole of a square steel pipe column for two H-shaped steel beams and two steel plate beams that form a pair.
FIG. 17 is an external view when a square steel pipe column is penetrated by using a pair of two steel plates that are horizontal and parallel in both directions as a beam.
FIG. 18 is a top view when a pair of two steel plates that are horizontal and parallel in both directions are used as beams, and the height of the two pairs of beams is the same, and a square steel pipe column is penetrated.
FIG. 19 shows two pairs of steel plates that are horizontal and parallel in both directions as beams, the same height of the two pairs of beams is made to penetrate the square steel pipe column, and two pairs of steel plates in the square steel pipe column Cross section when steel beam is crossed
FIG. 20 is a cross-sectional view of a square steel tube column internal crossing method when a rectangular steel tube column is penetrated when two pairs of steel plates that are horizontal and parallel in two directions are used as beams and the crossing of the orthogonal beam is different Figure
FIG. 21 is a pair of steel plates with at least one horizontal and parallel pair, and the beams pass through a square steel tube column and intersect inside, and between the pair of steel plate beams and columns. Front view when intermediate H-shaped steel beam is welded by butt welding after beveling after flange jointing and flange rear surface overlaying outside the column
FIG. 22 is a cross-sectional view in the case where joint welding is performed by groove welding including the overlay portion by overlay welding on the back surface of the end portion of the planned groove portion.
FIG. 23 is a cross-sectional view of a case in which two parallel and parallel steel plates are used as a beam, and a portion protruding from the outer surface of a column is bolted to a beam at the center between columns.
FIG. 24 is a cross-sectional view showing a state in which the metal foil is attached to the backing metal.
FIG. 25 is a cross-sectional view of a state in which the metal foil is attached to the backing metal and the metal foil is bent.
FIG. 26 is a cross-sectional view showing a state in which the backing metal attached with the metal foil is inserted from the gap of the joint groove.
FIG. 27 is a cross-sectional view of a state in which a backing metal attached with a metal foil is inserted into the joint groove gap and set on the groove back surface.
FIG. 28 is a cross-sectional view of a state in which beam flange 4 and column 5 are fillet welded with high-strength welding material.
FIG. 29 is a cross-sectional view showing a state in which a partial groove is formed in the column 5 and the beam flange 4 and the column 5 are partially mixed and welded with a high-strength welding material.
FIG. 30 shows a state where a thin metal wire is attached to an annular backing metal.
FIG. 31 shows a state in which a thin metal wire is attached to an annular backing metal, the backing metal is set on the inner surface of a column, and a beam or a beam flange is inserted.
FIG. 32 is an explanatory cross-sectional view of a method for heating the tip of the column groove and bending it to the inner surface of the column to obtain a groove depth greater than the column wall thickness and to obtain an effective throat thickness greater than the column wall thickness.
FIG. 33 is a cross-sectional view of the joint shape when the front bead width is widened.
[Explanation of symbols]
1 Diaphragm of steel beam-column joint
1A Umbrella folded state of diaphragm
2 Square steel pipe between diaphragms. A member composed of 1 and 2 is called a dice.
3 H-shaped steel beam
3A H-shaped steel beam when divided in the longitudinal direction
3B H-beam with the web removed at the center in the longitudinal direction
3C Center beam between columns
Flange thickness of the central beam between 3T columns
4 H-shaped steel beam flange
4A Flange that is widened up and down with H-beam
4F H-shaped steel beam, H-shaped steel beam flange, and generic name for steel beam that is a pair of two
5 Column made of square steel pipe
5A Length of column side by square steel pipe
5B Bending moment
5C tensile force
Column with 5P round steel pipe
Column thickness by 5T square steel pipe
6 Welding of square steel pipe and diaphragm
7 Welding between beam flange and diaphragm
8 Tacking or assembly welding
9 H-shaped steel beam web
10 Back money
11 Scallop
12 Plate 1
13 Plate 2
14 Horizontal stiffener
15 Welding of square steel pipe column and beam
15A Back bead width
15B Front bead extension length from back bead toe
15H Front bead height at back bead toe position
15T Toe end of front bead extension
16 Bolt hole
17 Opening on the side of square steel pipe column for penetration of H-shaped steel beam
17A Square steel pipe column side opening for beam penetration of steel plate as a pair
18 A pair of steel plates with two horizontal and parallel plates
18A Another pair of steel plates with two horizontal and parallel plates
19 Welding of a pair of steel plates and a central beam between two columns in two horizontal and parallel plates
20 bolt joint
21 Welding of beam intersections in rectangular steel pipe columns
22 Gusset plate
23 Overlay welding
24 Butt welding
25 Effective throat thickness
25A throat thickness
26 Metal foil
27 High strength fillet welding
28 Groove
29 Metal wire
30 Splice plate

Claims

At the beam-to-column joint of a steel building structure, a plurality of H-shaped steel beams are inserted into through-holes resembling the cross-sectional shape of the beam at the beam connection point of the square steel tube column, and a small beam is formed inside the square steel tube column. passed through a static beam to the beam of the blame large beam removing the web crossed by Luke, or by welding through beam together, by welding the angular shaped tubular columns the H-shaped steel beams, steel structure How to make

At the beam-to-column joint of a steel structure, at least one of the beams is a pair of two horizontal and parallel steel plates. All the beams are inserted, the pair of beams of the steel plate and the other beam are crossed inside the square steel pipe column, and all the through beams and the square steel pipe column are welded and joined, The H-shaped steel beam to be joined to the steel plate outside the square steel pipe column is bolted to the through beam and the middle H-shaped steel beam lower flange without abutting the column, and the middle between the columns. A method of manufacturing a steel structure by combining the operation of performing weld welding on the back surface of the upper flange end of the beam and performing groove processing including the built-up portion and welding the through beam.

The invention according to claim 1 or 2, wherein an opening having an opening or a welding groove according to a cross-sectional shape and the number of the beam is provided on a side surface of the square steel pipe column, and the beam is provided in the opening. A thin wire that is melted by welding heat from the outside of the rectangular steel pipe column to the inner surface side of the rectangular steel pipe column of the opening through the opening. A method of welding a square steel pipe column and a beam from the outside of a square steel pipe column to the backing metal using foil.

In the invention according to claim 1 or 2, the side surface of the square steel pipe column is provided with an opening portion having an opening portion or a welded portion groove according to the cross-sectional shape and number of beams, and the opening portion includes the opening portion. A beam is inserted, a plurality of beams are crossed inside the square steel pipe column, and the square steel pipe column and the beam are welded with a welding material having a strength higher than that of the base metal or by partial penetration welding. A method of welding square steel pipe columns and beams on one side from the outside of the square steel pipe columns while ensuring a throat thickness that is 10% or more of the thickness.

In the invention according to claim 1 or 2, in the side surface of the square steel pipe column, an opening is provided in accordance with the cross-sectional shape and the number of beams, and after the groove is processed, the vicinity of the groove The groove portion and its vicinity are bent toward the inner surface of the rectangular steel tube column, the beam is inserted into the opening, and a plurality of beams intersect with each other inside the rectangular steel tube column. A method to weld a square steel pipe column and a beam from one side to the other side of the square steel pipe column while ensuring a throat thickness that is 10% or more of the wall thickness.

The invention according to claim 1 or 2, wherein an opening having an opening or a welding groove according to a cross-sectional shape and the number of the beam is provided on a side surface of the square steel pipe column, and the beam is provided in the opening. Insert a plurality of beams into the square steel tube column, cross the inside of the square steel tube column, apply a backing metal to the inner surface side of the square steel tube column of the opening, and the position of the weld bead toe on the front side on the square steel tube column side is It is welded so that it is located 80% or more of the square steel pipe column thickness away from the position of the weld root portion on the back surface, and the height of the front bead at least in the region of the weld bead width on the back surface is at least the square steel tube column thickness. To weld square steel pipe columns and beams on one side from the outside of the square steel pipe columns so that more than 10% of steel is secured and the surplus changes smoothly from the surface of the base metal