JP2007222929A - Welding-assembled box pillar - Google Patents

Welding-assembled box pillar Download PDF

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JP2007222929A
JP2007222929A JP2006049683A JP2006049683A JP2007222929A JP 2007222929 A JP2007222929 A JP 2007222929A JP 2006049683 A JP2006049683 A JP 2006049683A JP 2006049683 A JP2006049683 A JP 2006049683A JP 2007222929 A JP2007222929 A JP 2007222929A
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diaphragm
skin plate
welded
welding
skin
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JP4793023B2 (en
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Hisaya Kamura
久哉 加村
Takumi Ishii
匠 石井
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JFE Steel Corp
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JFE Steel Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an inner diaphragm type welding-assembled box pillar suitable for a pillar member for a building structure to which the earthquake resistance is requested. <P>SOLUTION: A skin plate is divided into portions 21, 22, 23 so as to hold a diaphragm 3 in a surface out of outer peripheral surfaces of a BOX pillar 1 with a beam mounted thereon, or at least one surface of surfaces facing the first surface. The diaphragm and the skin plate are welded to each other at abutted parts. An outer ridge 31 of the diaphragm held between the divided skin plates is on the same level as the outer surface of the skin plate. A groove (b) for corner welding of the BOX pillar is formed on the outer ridge of the diaphragm. The skin plate is formed of steel having the tensile strength of ≥540 N/mm<SP>2</SP>, and the diaphragm has the tensile strength equal to or higher than that of the skin plate. The diaphragm and the skin plate are welded with the heat input of ≤150 kJ/cm. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は内ダイヤフラム形式の溶接組立てＢＯＸ柱に関し、特に耐震性を要求される建築構造物用柱部材として好適なものに関する。   The present invention relates to a welded and assembled BOX column of an inner diaphragm type, and particularly relates to a column member for a building structure that requires earthquake resistance.

超高層建築物に用いられる大断面柱には内ダイヤフラム形式の溶接組立てＢＯＸ柱が用いられることが多い。   An inner diaphragm type welded BOX column is often used for a large cross-section column used in a high-rise building.

図６は内ダイヤフラム形式の溶接組立てＢＯＸ柱による柱梁接合部の部分透視図を示し、ＢＯＸ柱１００は柱スキンプレート１０１の内部で、梁２００の上下のフランジ部が取り付けられる位置に、ダイヤフラム４００を溶接する。   FIG. 6 is a partial perspective view of a column beam joint portion by an inner diaphragm type weld assembly BOX column. The BOX column 100 is located inside the column skin plate 101 at a position where the upper and lower flange portions of the beam 200 are attached. Weld.

溶接はエレクトロスラグ溶接で、ダイヤフラム４００の両側に裏当金５００を取り付けて開先を構成する。ＢＯＸ柱１００の外周部は柱スキンプレート１０１が組合わされる角部にサブマージアーク溶接部３００を形成して構成する。   Welding is electroslag welding, and a groove 500 is formed by attaching a backing metal 500 to both sides of the diaphragm 400. The outer peripheral portion of the BOX column 100 is formed by forming a submerged arc welded portion 300 at a corner portion where the column skin plate 101 is combined.

図５は内ダイヤフラム形式の溶接組立てＢＯＸ柱で溶接される個所を示す模式図で、ダイヤフラム４００と柱スキンプレート１０１を取り付けるエレクトロスラグ溶接部６００、柱スキンプレート１０１の角継手に形成されるサブマージアーク溶接部３００を示す。   FIG. 5 is a schematic view showing a place where the inner diaphragm type welded assembly BOX column is welded. A weld 300 is shown.

図７は、ダイヤフラム４００と柱スキンプレート１０１のエレクトロスラグ溶接部を示し、超高層建築物の柱部材の場合、溶接入熱は５００〜１５００ｋＪ／ｃｍとなり、溶接金属７００の一部は柱スキンプレート１０１に溶け込み、ＨＡＺ８００の外周部は柱スキンプレートで２０〜５００ｍｍ程度の深さに達する。   FIG. 7 shows an electroslag welded portion of the diaphragm 400 and the column skin plate 101. In the case of a column member of a high-rise building, the welding heat input is 500 to 1500 kJ / cm, and a part of the weld metal 700 is a column skin plate. The outer peripheral portion of the HAZ 800 reaches a depth of about 20 to 500 mm with a pillar skin plate.

そのため、溶接後の熱収縮により柱スキンプレート１０１と裏当金５００との間にノッチ状の空隙部ｇ１、ｇ２が発生し、地震時に梁からの材軸応力による曲げモーメントが作用して柱梁接合部が破断される場合がある。図は空隙部ｇ１の先端部がダイヤフラム４００から距離ｌ１で位置していることを示す。   Therefore, notched gaps g1 and g2 are generated between the column skin plate 101 and the backing metal 500 due to heat shrinkage after welding, and a bending moment due to the axial stress from the beam acts during the earthquake, and the column beam The joint may be broken. The figure shows that the tip of the gap g1 is located at a distance l1 from the diaphragm 400.

上述したように、内ダイヤフラム形式の溶接ＢＯＸ柱は組立て工程が複雑で、且つ大型となるとエレクトロスラグ溶接の入熱量の増加に伴い溶着金属および鋼材の熱影響部の靭性が低下し、破壊の危険性が増大する。   As described above, the welded BOX column of the inner diaphragm type has a complicated assembly process, and when it becomes large, the toughness of the heat-affected zone of the deposited metal and the steel material decreases as the heat input amount of electroslag welding increases, and the risk of destruction Increase.

また、溶接ＢＯＸ柱に高張力鋼を使用する場合、入熱の大きなエレクトロスラグ溶接で、健全な溶接部を得るため、高度な材質設計や溶接条件の選定が必要とされる。   In addition, when high-tensile steel is used for the welded BOX column, advanced material design and selection of welding conditions are required in order to obtain a sound weld by electroslag welding with large heat input.

特許文献１は、鋼柱の製造方法に関し、鋼柱を構成する側板１０１の少なくとも１枚にスロット９００を設け、一方、ダイヤフラム４００には該スロットに対応する差込部１０００を設けて、該差込部１０００を前記スロット９００に嵌合させながら側板１０１とダイヤフラム４００を溶接することが記載されている（図８）。   Patent Document 1 relates to a method for manufacturing a steel column, in which at least one of the side plates 101 constituting the steel column is provided with a slot 900, while the diaphragm 400 is provided with an insertion portion 1000 corresponding to the slot, It is described that the side plate 101 and the diaphragm 400 are welded while fitting the insert portion 1000 into the slot 900 (FIG. 8).

特許文献１記載の発明によれば、ダイヤフラム４００は側板１０１に対し、正確な位置決めが可能で、両者の溶接は嵌合部のみであっても良く、且つ、外側から溶接することが可能なため、機械化が容易である。   According to the invention described in Patent Document 1, the diaphragm 400 can be accurately positioned with respect to the side plate 101, and the welding of both may be only the fitting portion and can be welded from the outside. Easy to mechanize.

特許文献２は、耐破壊特性に優れたエレクトロスラグ溶接継手の製造方法に関し、裏当金と柱スキンプレートが当接する部分に、溶接後、空隙が生じないように、裏当金側に開先を設けて溶接することが記載されている。   Patent Document 2 relates to a method of manufacturing an electroslag welded joint having excellent fracture resistance, and a groove is formed on the back metal side so that no gap is formed after welding at the part where the back metal and the column skin plate abut. It is described that welding is performed.

特許文献２記載の発明によれば、裏当金と柱スキンプレートが溶接されているので、ダイヤフラムを柱スキンプレートにエレクトロスラグ溶接しても、溶接後に両者の間に空隙が生じることはなく耐震性に優れた柱梁接合部が得られる。
特公昭５０−２１４２４号公報 特開平８−１５５６６１号公報 According to the invention described in Patent Document 2, since the backing metal and the column skin plate are welded, even if the diaphragm is electroslag welded to the column skin plate, there is no gap between the two after welding and the earthquake resistance. An excellent column beam joint can be obtained.
Japanese Patent Publication No.50-21424 JP-A-8-155661

しかしながら、特許文献１記載の方法は、ダイヤフラムとスキンプレートの両者に加工が必要で、特許文献２記載の方法も裏当金の開先加工を必要とし、いずれも製作コストを上昇させる。   However, the method described in Patent Document 1 requires processing of both the diaphragm and the skin plate, and the method described in Patent Document 2 also requires groove processing of the backing metal, both of which increase the manufacturing cost.

特に、特許文献１記載の方法は、スキンプレートのスロットにダイヤフラムを差込んだ状態で溶接を行うため、スロット角部において溶接欠陥を生じやすい。   In particular, in the method described in Patent Document 1, since welding is performed with a diaphragm inserted into a slot of a skin plate, welding defects are likely to occur at the corners of the slot.

更に、ダイヤフラムに差し込み部を加工するため、スカラップの寸法が大きくなり、該スカラップにより梁から柱への応力の伝達が阻害され、柱スキンプレートの隅角部内側に大きな引張り応力が生じるようになり、上述した溶接欠陥と共に柱が脆性破壊される可能性を増大させる。   Furthermore, since the insertion part is processed into the diaphragm, the size of the scallop is increased, and the transmission of stress from the beam to the column is hindered by the scallop, and a large tensile stress is generated inside the corner portion of the column skin plate. Increases the likelihood of the column being brittlely fractured with the weld defects described above.

そこで、本発明はスキンプレートやダイヤフラムに複雑な前加工が必要でなく、且つエレクトロスラグ溶接を用いずに組立てが可能な内ダイヤフラム形式の溶接ＢＯＸ柱を提供することを目的とする。   Therefore, an object of the present invention is to provide a welded BOX column of an inner diaphragm type that does not require complicated pre-processing for a skin plate or a diaphragm and can be assembled without using electroslag welding.

本発明の課題は以下の手段により達成される。
１．ダイヤフラムを内部に取り付ける溶接組立てＢＯＸ柱であって、前記ＢＯＸ柱の外周面のうち梁が取り付けられる面または該面に対向する面の少なくとも一面は、ダイヤフラムを挟むようにスキンプレートが分割され、前記ダイヤフラムと前記スキンプレートは当接する個所が溶接されていることを特徴とする溶接組立てＢＯＸ柱。 The object of the present invention is achieved by the following means.
1. A welded assembly BOX column for attaching a diaphragm to the inside, wherein a skin plate is divided so that at least one surface of the outer peripheral surface of the BOX column to which a beam is attached or a surface facing the surface is sandwiched by the diaphragm, A welded and assembled BOX column, wherein a diaphragm and the skin plate are welded at a contact portion.

２．分割されたスキンプレート間に挟まれるダイヤフラムの外辺が、前記スキンプレートの外表面と同一高さであることを特徴とする１記載の溶接組立てＢＯＸ柱。   2. 2. The welded assembly BOX column according to 1, wherein an outer side of the diaphragm sandwiched between the divided skin plates has the same height as an outer surface of the skin plate.

３．分割されたスキンプレート間に挟まれるダイヤフラムの外辺に、ＢＯＸ柱の角溶接用開先が設けられていることを特徴とする２記載の溶接組立てＢＯＸ柱。   3. 3. The welded and assembled BOX column according to 2, wherein a corner welding groove for the BOX column is provided on the outer side of the diaphragm sandwiched between the divided skin plates.

４．スキンプレートが引張強さ５４０Ｎ／ｍｍ２以上の鋼板で、ダイヤフラムは前記スキンプレートと同等以上の引張強さであることを特徴とする１乃至３のいずれか一つに記載の溶接組立てＢＯＸ柱。 4). The welded and assembled BOX column according to any one of claims 1 to 3, wherein the skin plate is a steel plate having a tensile strength of 540 N / mm 2 or more, and the diaphragm has a tensile strength equal to or higher than that of the skin plate.

５．ダイヤフラムとスキンプレートを入熱１５０ｋＪ／ｃｍ以下で溶接することを特徴とする１乃至４のいずれか一つに記載の溶接組立てＢＯＸ柱。   5. The welded and assembled BOX column according to any one of 1 to 4, wherein the diaphragm and the skin plate are welded at a heat input of 150 kJ / cm or less.

本発明は、柱の外周面のうち、３面のスキンプレートに逐次ダイヤフラムを溶接し、最後の１面は当該ダイヤフラムを挟むように分割したスキンプレートで形成するので、以下の効果が得られる。
１． スキンプレートとダイヤフラムの溶接にエレクトロスラグ溶接を用いずに、入熱１５０ｋＪ／ｃｍ以下の小入熱で溶接することが可能である。
２． その結果、溶接欠陥が少なく、溶接熱変形のない寸法精度の高い溶接ＢＯＸ柱が得られ、建築構造物において設計性能が保証される。
３． また、高張力鋼の使用が容易となり、超高層建築構造物の設計の自由度が増大する。４． ダイヤフラムの板厚により溶接条件が選定され、より板厚が薄いスキンプレートにおいて溶け落ちなどの溶接欠陥が発生しやすいＣＦＴ用ＢＯＸコラムの製造が容易となる。 According to the present invention, the diaphragm is sequentially welded to the three skin plates of the outer peripheral surface of the column, and the last one surface is formed by the skin plates divided so as to sandwich the diaphragm. Therefore, the following effects are obtained.
1. It is possible to perform welding with a small heat input of 150 kJ / cm or less without using electroslag welding for welding the skin plate and the diaphragm.
2. As a result, a welded BOX column with few weld defects and high dimensional accuracy without welding thermal deformation is obtained, and design performance is guaranteed in a building structure.
3. In addition, the use of high-strength steel is facilitated, and the degree of freedom in designing a high-rise building structure is increased. 4). The welding conditions are selected depending on the plate thickness of the diaphragm, and it becomes easy to manufacture a BOX column for CFT in which welding defects such as burn-out are likely to occur in a skin plate having a thinner plate thickness.

以下、図面を用いて本発明を詳細に説明する。   Hereinafter, the present invention will be described in detail with reference to the drawings.

図１に、本発明の一実施形態に係る内ダイヤフラム形式の溶接ＢＯＸ柱の外観図を、図２にその内部構造を示す。両図において、１は溶接ＢＯＸ柱、２ａ，２ｂ，２ｃ，２ｄはスキンプレート、３はダイヤフラム、２１、２２、２３はダイヤフラム３を挟むように分割されたスキンプレート２ｄの分割プレート、３１はダイヤフラム３の外辺、ａはダイヤフラム３を分割スキンプレート２１、２２、２３に外面溶接するための開先で分割スキンプレート側に加工されたもの、ｂは、スキンプレート２ｂ、２ｄの角継手溶接用開先で、スキンプレート２ｂ、２ｄの柱軸方向の両端部と、ダイヤフラム３でスキンプレート２２、２３（２１）に挟み込まれる外辺３１の両端部に加工されるもの、Ｃはダイヤフラム３とスキンプレート２ａ，２ｂ，２ｃを溶接するための開先でダイヤフラム３側に加工されるものを示す。   FIG. 1 is an external view of an inner diaphragm type welded BOX column according to an embodiment of the present invention, and FIG. 2 shows its internal structure. In both figures, 1 is a welded BOX column, 2a, 2b, 2c and 2d are skin plates, 3 is a diaphragm, 21, 22 and 23 are divided plates of a skin plate 2d which is divided so as to sandwich the diaphragm 3, and 31 is a diaphragm. 3, outer side of a, a machined to the side of the split skin plate with a groove for externally welding the diaphragm 3 to the split skin plates 21, 22, 23, b for corner joint welding of the skin plates 2b, 2d The groove is processed at both ends of the skin plates 2b and 2d in the column axis direction and at both ends of the outer side 31 sandwiched between the skin plates 22 and 23 (21) by the diaphragm 3, and C is the diaphragm 3 and the skin. A groove to be welded to the plates 2a, 2b, 2c and processed on the diaphragm 3 side is shown.

図示した溶接ＢＯＸ柱１は、２枚のダイヤフラム３を有し、柱外周面を形成する四面のスキンプレート２ａ，２ｂ，２ｃ，２ｄのうち、梁が取り付けられる面または該面に対向する面（本図ではスキンプレート２ｄ）を、２枚のダイヤフラム３の両側から挟み込めるように、分割し、分割スキンプレート２１，２２，２３とする。２枚のダイヤフラム３は梁フランジ（図では省略）の間隔に配置する。   The illustrated welded BOX column 1 has two diaphragms 3, and is a surface to which a beam is attached or a surface facing the surface among the four skin plates 2 a, 2 b, 2 c, and 2 d forming the column outer peripheral surface ( In this figure, the skin plate 2d) is divided so as to be sandwiched from both sides of the two diaphragms 3 to be divided skin plates 21, 22, and 23. The two diaphragms 3 are arranged at intervals between beam flanges (not shown).

ダイヤフラム３の外辺３１はその両側の分割スキンプレート２２と２１（２３）の間から柱外周面に露出し、通しダイアフラムとなるので、分割スキンプレートの外表面に開先ａを加工し、ＢＯＸ柱の外側からこれら分割スキンプレートとダイヤフラム３を溶接する。尚、開先ａは，外辺３１に加工してもよい。   The outer side 31 of the diaphragm 3 is exposed to the outer peripheral surface of the column from between the divided skin plates 22 and 21 (23) on both sides thereof, and becomes a through diaphragm. Therefore, the groove a is processed on the outer surface of the divided skin plate, and the BOX The divided skin plate and the diaphragm 3 are welded from the outside of the column. The groove a may be processed into the outer side 31.

ダイヤフラム３は、外辺３１を除く残りの３辺に開先Ｃが加工され、ＢＯＸ柱の内部において、スキンプレート２ａ，２ｂ，２ｃと溶接される。   The diaphragm 3 is processed with the groove C on the remaining three sides excluding the outer side 31, and is welded to the skin plates 2a, 2b, and 2c inside the BOX column.

本発明に係るＢＯＸ柱では、梁が取り付けられる面または該面に対向する面を分割するので、ダイヤフラム３の外辺３１の両端には、ＢＯＸ柱の外周面を形成するために隣り合うスキンプレート２ｄとスキンプレート２ａ（２ｃ）を柱軸方向に溶接する角継手溶接用開先ｂを加工する。   In the BOX column according to the present invention, the surface to which the beam is attached or the surface facing the surface is divided, so that the skin plates adjacent to form the outer peripheral surface of the BOX column are formed at both ends of the outer side 31 of the diaphragm 3. A corner joint welding groove b for welding 2d and the skin plate 2a (2c) in the column axis direction is processed.

図３は本発明に係る溶接ＢＯＸ柱のダイヤフラムの取り付け方法例を示す図で、図において４は１／４円弧形状のスカラップを示し（その他の符号は図１と同じものを指す）、（ａ）はスカラップ４を設けない場合、（ｂ）はスカラップ４を設けた場合を示す。   FIG. 3 is a diagram showing an example of a method for attaching a diaphragm of a welded BOX column according to the present invention, in which 4 indicates a scallop having a ¼ arc shape (the other symbols indicate the same as in FIG. 1), and (a ) Shows a case where the scallop 4 is not provided, and (b) shows a case where the scallop 4 is provided.

尚、本発明ではダイヤフラム３の外辺３１の、分割スキンプレートの外表面に対する高さは特に規定しない。外辺３１を分割スキンプレート２１（２２、２３）の外表面と同じ高さとなるようにすると、梁フランジの取り付けが容易で好ましい。   In the present invention, the height of the outer side 31 of the diaphragm 3 with respect to the outer surface of the divided skin plate is not particularly defined. If the outer side 31 has the same height as the outer surface of the divided skin plate 21 (22, 23), the beam flange can be easily attached.

外辺３１の高さを分割スキンプレートの外表面より低くし、梁フランジ先端部を差込式にしたり、外辺３１を分割スキンプレートの外表面から突出させることも可能である。   It is also possible to make the height of the outer side 31 lower than the outer surface of the divided skin plate, make the beam flange tip part a plug-in type, or make the outer side 31 protrude from the outer surface of the divided skin plate.

図４は本発明に係るＢＯＸ柱の組立て手順の一例を示す図で、図において５は角継手溶接用の裏あて金（25ｘ25ｍｍの角材）、ｆはダイヤフラム３とスキンプレート２ａ（２ｂ，２ｃ）の溶接部、ｈは角継手溶接部、ｇはスキンプレート２ｄの外表面、その他で図１と同じ符号は同じものを指す。   FIG. 4 is a view showing an example of the assembly procedure of the BOX column according to the present invention. In the figure, 5 is a backing metal for square joint welding (25 × 25 mm square material), and f is a diaphragm 3 and a skin plate 2a (2b, 2c). 1, h is a corner joint weld, g is the outer surface of the skin plate 2 d, and the same reference numerals as those in FIG.

まず、角継手溶接用の、角度θの開先ｂを幅方向両端部に設けたスキンプレート２ｂを水平面に置き（ａ）、スキンプレート２ｂの長手方向で所定の位置にダイアフラム３を仮付け溶接する。   First, a skin plate 2b provided with a groove b of angle θ at both ends in the width direction for corner joint welding is placed on a horizontal surface (a), and the diaphragm 3 is temporarily welded at a predetermined position in the longitudinal direction of the skin plate 2b. To do.

ダイヤフラム３には、外辺３１の両端部に角継手溶接用の、角度θの開先ｂを、その他の３辺にはスキンプレートに溶接するための開先ｃを加工しておく。   The diaphragm 3 is processed with a groove b for angle joint welding at both ends of the outer side 31 and a groove c for welding to the skin plate on the other three sides.

ダイヤフラム３とスキンプレート２ｂは100％CO2ガスをシールドガスに用いたMAG溶接（以下CO2溶接）を用いて両面溶接（片側から溶接し、裏面をガウジングした後、反対側を溶接する）を行う（ｂ）。 Diaphragm 3 and skin plate 2b are welded on both sides using MAG welding (hereinafter referred to as CO 2 welding) using 100% CO 2 gas as the shielding gas (welding from the one side, gouging the back side, and then welding the other side) Perform (b).

次に、角継手溶接用の裏あて金（角材）５をスキンプレート２ｂの両側に取り付け、両側のスキンプレート２ｃ，２ａを立て込み、角溶接用の裏あて金５とダイアフラム３とを仮付け溶接する（ｃ）。   Next, a backing metal (square member) 5 for corner joint welding is attached to both sides of the skin plate 2b, and the skin plates 2c and 2a on both sides are stood up to temporarily attach the backing metal 5 and the diaphragm 3 for corner welding. Weld (c).

次に、コの字形の組立て材を90度回転させ、下向きCO2溶接によりスキンプレート２ａとダイアフラム３を（ｂ）と同様に溶接する（ｄ）。次に反転させ同様に溶接する（ｅ）。 Next, the assembly member of the U-shaped is rotated 90 degrees downward CO 2 welding by welding similarly skin plate 2a and the diaphragm 3 and (b) (d). Next, it is reversed and welded in the same manner (e).

次に外辺３１がスキンプレート２ｄ（２１，２２，２３）に挟まれる面を上にして、角継手溶接の裏当て金５及びダイアフラム３とスキンプレート２ｄ（２１，２２，２３）の溶接部の裏当て金（図では省略）を所定の位置にセットし、仮付け溶接を行う。   Next, with the outer side 31 facing the surface sandwiched between the skin plates 2d (21, 22, 23), the corner joint welding backing metal 5 and the welded portion of the diaphragm 3 and the skin plates 2d (21, 22, 23) The backing metal (not shown in the figure) is set at a predetermined position, and tack welding is performed.

角継手溶接の裏当て金５はダイアフラム３と通しとなるよう柱軸方向に３分割する。この際、ダイアフラム３とスキンプレートのCO2溶接のビードと裏当て金５が干渉しないようグランダー仕上げを行うことが望ましい。 The corner joint welding backing metal 5 is divided into three in the column axis direction so as to pass through the diaphragm 3. At this time, it is desirable to perform a ground finish so that the bead of the CO 2 welding of the diaphragm 3 and the skin plate and the backing metal 5 do not interfere with each other.

その後、分割スキンプレート２１，２２，２３に３分割されているスキンプレート２ｄをセットし、仮付け溶接を行う。この際、外辺３１とスキンプレート２ｄ（２１，２２，２３）の外表面ｇが一致するように、ダイヤフラム３の高さを調整する。   Thereafter, the skin plate 2d divided into three is set on the divided skin plates 21, 22, and 23, and tack welding is performed. At this time, the height of the diaphragm 3 is adjusted so that the outer side 31 and the outer surface g of the skin plate 2d (21, 22, 23) coincide.

分割スキンプレート２１，２２，２３とダイアフラム３を下向きCO2溶接により接合する。最後にスキンプレート２ｄと２ａ（２ｃ）、スキンプレート２ｂと２ａ（２ｃ）を溶接する角継手溶接をサブマージ溶接で行う（ｆ）。角継手を溶接する順番は特に規定しない。 The divided skin plates 21, 22, 23 and the diaphragm 3 are joined together by downward CO 2 welding. Finally, corner joint welding for welding the skin plates 2d and 2a (2c) and the skin plates 2b and 2a (2c) is performed by submerged welding (f). The order of welding the corner joints is not specified.

本発明に係る溶接ＢＯＸ柱をスキンプレート、ダイアフラムに鋼種ＳＡ４４０を用い、□−５００Ｘ５００Ｘ２５ 長さ５０００（ｍｍ）で製作する場合、スキンプレートの開先角度は３５度、ダイアフラムの板厚は２５ｍｍ、幅方向の開先角度も３５度、台形の切り欠きの上底部は５ｍｍで高さは２５ｍｍ、他の３辺の板厚方向にはＫ開先とし開先角度は４５度とした。角は半径３５ｍｍの１／４円のスカラップとし、裏当金は２５ｍｍ×２５ｍｍの角材とすることが望ましい。   When the welded BOX column according to the present invention is made of skin plate, steel grade SA440 is used for the diaphragm, and □ -500X500X25 is manufactured with a length of 5000 (mm), the groove angle of the skin plate is 35 degrees, the plate thickness of the diaphragm is 25 mm, the width The groove angle in the direction was 35 degrees, the upper base of the trapezoidal cutout was 5 mm, the height was 25 mm, and the groove angle was 45 degrees in the other three sides in the plate thickness direction. It is desirable that the corner is a scallop of ¼ circle with a radius of 35 mm, and the backing metal is a square member of 25 mm × 25 mm.

上述したように、本発明に係る溶接ＢＯＸ柱は、柱外周面の一面においてダイヤフラムを柱の外面側からスキンプレートに溶接可能とし、スキンプレートにダイヤフラムを取り付ける溶接を、全て開放空間で可能とする構造を特徴とする。そのため、エレクトロスラグ溶接を用いずにダイヤフラムとスキンプレートの組立て溶接が可能となる。   As described above, the welded BOX column according to the present invention enables the diaphragm to be welded to the skin plate from the outer surface side of the column on one surface of the column outer peripheral surface, and enables welding to attach the diaphragm to the skin plate in all open spaces. Characterized by structure. Therefore, the assembly welding of the diaphragm and the skin plate can be performed without using electroslag welding.

本発明に係るＢＯＸ柱の組み立てにおいて最も入熱が大きくなる角継手溶接のサブマージ溶接でも入熱は15万J/ｃｍ程度であり、引張強さ５４０Ｎ／ｍｍ２以上の高張力鋼を用いた場合でも溶接部の靭性低下が抑制され耐震性に優れる。 In the case of submerged welding of the corner joint welding where the heat input is the largest in the assembly of the BOX column according to the present invention, the heat input is about 150,000 J / cm, and a high strength steel having a tensile strength of 540 N / mm 2 or more is used. However, the deterioration of toughness of the weld zone is suppressed and the earthquake resistance is excellent.

本発明の一実施形態に係る内ダイヤフラム形式の溶接ＢＯＸ柱の外観図。1 is an external view of an inner diaphragm type welded BOX column according to an embodiment of the present invention. 図１に示した溶接ＢＯＸ柱の内部構造を示す図。The figure which shows the internal structure of the welded BOX column shown in FIG. 本発明に係る溶接ＢＯＸ柱におけるダイヤフラムの取り付け例を示す図。The figure which shows the example of attachment of the diaphragm in the welded BOX pillar which concerns on this invention. 本発明に係るＢＯＸ柱の組立て手順の一例を示す図。The figure which shows an example of the assembly procedure of the BOX pillar which concerns on this invention. 従来例。Conventional example. 従来例。Conventional example. ダイヤフラムとスキンプレートのエレクトロスラグ溶接部を示す模式図。The schematic diagram which shows the electroslag welding part of a diaphragm and a skin plate. 従来例。Conventional example.

符号の説明Explanation of symbols

１ 溶接ＢＯＸ柱
２ａ，２ｂ，２ｃ，２ｄ スキンプレート
３ ダイヤフラム
４ スカラップ
５ 裏当金
２１、２２、２３ 分割スキンプレート
３１ ダイヤフラムの外辺
ａ、ｂ、ｃ 開先
１００ ＢＯＸ柱
１０１ 柱スキンプレート
２００ 梁
３００ サブマージアーク溶接部
４００ ダイヤフラム
５００ 裏当金
６００ エレクトロスラグ溶接部
７００ 溶接金属
８００ ＨＡＺ DESCRIPTION OF SYMBOLS 1 Welded BOX pillar 2a, 2b, 2c, 2d Skin plate 3 Diaphragm 4 Scallop 5 Backing metal 21, 22, 23 Split skin plate 31 Outer side of diaphragm a, b, c Groove 100 BOX pillar 101 Column skin plate 200 Beam 300 Submerged arc welded part 400 Diaphragm 500 Back metal 600 Electroslag welded part 700 Weld metal 800 HAZ

Claims (5)

ダイヤフラムを内部に取り付ける溶接組立てＢＯＸ柱であって、前記ＢＯＸ柱の外周面のうち梁が取り付けられる面または該面に対向する面の少なくとも一面は、ダイヤフラムを挟むようにスキンプレートが分割され、前記ダイヤフラムと前記スキンプレートは当接する個所が溶接されていることを特徴とする溶接組立てＢＯＸ柱。   A welded assembly BOX column for attaching a diaphragm to the inside, wherein a skin plate is divided so that at least one surface of the outer peripheral surface of the BOX column to which a beam is attached or a surface facing the surface is sandwiched by the diaphragm, A welded and assembled BOX column, wherein a diaphragm and the skin plate are welded at a contact portion. 分割されたスキンプレート間に挟まれるダイヤフラムの外辺が、前記スキンプレートの外表面と同一高さであることを特徴とする請求項１記載の溶接組立てＢＯＸ柱。   The welded assembly BOX column according to claim 1, wherein an outer side of the diaphragm sandwiched between the divided skin plates is flush with an outer surface of the skin plate. 分割されたスキンプレート間に挟まれるダイヤフラムの外辺に、ＢＯＸ柱の角溶接用開先が設けられていることを特徴とする請求項２記載の溶接組立てＢＯＸ柱。   The welded assembly BOX column according to claim 2, wherein a corner welding groove for the BOX column is provided on an outer side of the diaphragm sandwiched between the divided skin plates. スキンプレートが引張強さ５４０Ｎ／ｍｍ２以上の鋼板で、ダイヤフラムは前記スキンプレートと同等以上の引張強さであることを特徴とする請求項１乃至３のいずれか一つに記載の溶接組立てＢＯＸ柱。 The welded assembly BOX according to any one of claims 1 to 3, wherein the skin plate is a steel plate having a tensile strength of 540 N / mm 2 or more, and the diaphragm has a tensile strength equal to or higher than that of the skin plate. Pillar. ダイヤフラムとスキンプレートを入熱１５０ｋＪ／ｃｍ以下で溶接することを特徴とする請求項１乃至４のいずれか一つに記載の溶接組立てＢＯＸ柱。 The welded and assembled BOX column according to any one of claims 1 to 4, wherein the diaphragm and the skin plate are welded at a heat input of 150 kJ / cm or less.
JP2006049683A 2006-02-27 2006-02-27 Welded BOX column Expired - Fee Related JP4793023B2 (en)

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Publication number Priority date Publication date Assignee Title
JP2008284575A (en) * 2007-05-16 2008-11-27 Sumitomo Metal Ind Ltd Welded column having box shape cross section
JP2013057234A (en) * 2011-08-16 2013-03-28 Arcreate:Kk Beam of steel frame structure column-beam joint part and smooth inner diaphragm direct coupling method
CN103628581A (en) * 2013-12-06 2014-03-12 徐林波 Box type safety hollow heat preservation plate and manufacturing method and application thereof
CN104110069A (en) * 2014-05-23 2014-10-22 浙江东南网架股份有限公司 Box-type X-shaped section intersection node and special mold frame, clamp and machining method for box-type X-shaped section intersection node
JP2015083318A (en) * 2013-10-25 2015-04-30 新日鐵住金株式会社 Box column and production method thereof
JP2016069865A (en) * 2014-09-29 2016-05-09 Ｊｆｅスチール株式会社 Column-beam connection structure
CN111168271A (en) * 2020-03-04 2020-05-19 郑州宝冶钢结构有限公司 Welding process method suitable for large-section medium-thickness plate box column

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JPH09308975A (en) * 1996-05-17 1997-12-02 Nippon Steel Corp Manufacture of box type steel structural member

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008284575A (en) * 2007-05-16 2008-11-27 Sumitomo Metal Ind Ltd Welded column having box shape cross section
JP2013057234A (en) * 2011-08-16 2013-03-28 Arcreate:Kk Beam of steel frame structure column-beam joint part and smooth inner diaphragm direct coupling method
JP2015083318A (en) * 2013-10-25 2015-04-30 新日鐵住金株式会社 Box column and production method thereof
CN103628581A (en) * 2013-12-06 2014-03-12 徐林波 Box type safety hollow heat preservation plate and manufacturing method and application thereof
CN104110069A (en) * 2014-05-23 2014-10-22 浙江东南网架股份有限公司 Box-type X-shaped section intersection node and special mold frame, clamp and machining method for box-type X-shaped section intersection node
JP2016069865A (en) * 2014-09-29 2016-05-09 Ｊｆｅスチール株式会社 Column-beam connection structure
CN111168271A (en) * 2020-03-04 2020-05-19 郑州宝冶钢结构有限公司 Welding process method suitable for large-section medium-thickness plate box column

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