JP3079331B2 - Installation method of outer stiffener ring of concrete column filled with steel pipe - Google Patents
Installation method of outer stiffener ring of concrete column filled with steel pipeInfo
- Publication number
- JP3079331B2 JP3079331B2 JP04140362A JP14036292A JP3079331B2 JP 3079331 B2 JP3079331 B2 JP 3079331B2 JP 04140362 A JP04140362 A JP 04140362A JP 14036292 A JP14036292 A JP 14036292A JP 3079331 B2 JP3079331 B2 JP 3079331B2
- Authority
- JP
- Japan
- Prior art keywords
- steel pipe
- ring
- stiffener ring
- steel
- outer stiffener
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Joining Of Building Structures In Genera (AREA)
- Rod-Shaped Construction Members (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Description
【0001】[0001]
【産業上の利用分野】この発明は、大規模な高層又は超
高層建物の柱として採用される充填型鋼管コンクリート
柱(以下、CFT柱と略すことがある。)の外スチフナ
ーリングの取付け方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for mounting an outer stiffener ring on a concrete-filled steel tube concrete column (hereinafter, may be abbreviated as a CFT column) used as a column for a large-scale high-rise or high-rise building. .
【0002】[0002]
【従来の技術】従来、CFT柱は種々公知であり(例え
ば特開昭59−44442号公報に開示されたもの参
照)、既に実用にも供されている。CFT柱であれ、通
常の鋼管柱であれ、図2のような柱梁架構を組み立てる
ためには、柱1の梁接合位置に、柱−梁間の荷重伝達を
行なう接合要素が不可欠であり、従来一般に柱1の外周
に外スチフナーリング2又は外ダイヤフラムを取付けて
梁3を接合することが行なわれている。2. Description of the Related Art Conventionally, various types of CFT columns have been known (for example, see Japanese Patent Application Laid-Open No. 59-44442) and have already been put to practical use. In order to assemble a column-beam frame as shown in FIG. 2, whether it is a CFT column or a normal steel tube column, a connecting element for transmitting a load between the column and the beam is indispensable at the beam connecting position of the column 1. Generally, an outer stiffener ring 2 or an outer diaphragm is attached to the outer periphery of a pillar 1 to join a beam 3.
【0003】[0003]
【本発明が解決しようとする課題】 従来一般の外ス
チフナーリングの製作は、所定の厚さをもつ圧延鋼板か
ら、ガス溶断法でドーナツ形状に切り抜く方法によって
行なわれている。しかし、いかに効率的な板取り設計を
しても、有効部分よりも高い割合で鋼材ロスが発生する
ので、大変不経済である。 外スチフナーリング用平鋼の厚さは、通常50mm前
後の厚板である。これを例えば内径が80cm、外径が1
10cmぐらいの大きなドーナツ形状にガス溶断法で切り
抜くには、大変長い加工時間を必要とし、工期が長び
き、加工コストが高くなる。 また、前記したような厚鋼板をガス溶断法で切り抜
く場合のガス炎は、吹管出口から先に向かって円錐形状
に拡大しており、その結果切断面に傾きを生ずるので、
直角な切断面を得ることは至難であり、寸法精度の確保
も困難である。特開昭59−165744号、特開昭6
0−23538号、特開昭60−33962号公報など
の発明において、周方向に複数に分割された接合金具を
用意し、これを鋼管柱の外周に溶接で取付けて梁の接合
要素を設けているのは、上述した困難を回避する意図に
よるものと認められる。 仮に、ドーナツ形状の外スチフナーリングを製作で
きたとしても、これを数mから10数mもの長い鋼管の
端から嵌めて順次その取付け位置へ移送し位置決めする
作業は、外スチフナーリング自体の重量が大きくて人力
による手作業ではとても困難である。その上、前記鋼管
に嵌めた状態での移送を円滑に行なうためには、鋼管自
体の外径寸法の精度が一定でないこともあって、鋼管の
外径と外スチフナーリングの内径との間にかなり大きな
余裕(直径差)が必要となる。しかし、最終的に外スチ
フナーリングを鋼管へ溶接等で一体的に取付ける構造上
は、前記の余裕(直径差)が大きくなることに問題があ
る。例えば外スチフナーリングを隅肉溶接で鋼管柱へ取
付ける場合の隙間は2mm位が限度とされるが、この限度
を保つことは実際上困難である。[Problems to be Solved by the Invention] Conventionally, a general outer stiffener ring is manufactured by cutting a rolled steel plate having a predetermined thickness into a donut shape by a gas fusing method. However, no matter how efficient the planing design, steel loss occurs at a higher rate than the effective portion, which is very uneconomical. The thickness of the flat steel for the outer stiffener ring is usually a thick plate of about 50 mm. For example, if the inner diameter is 80 cm and the outer diameter is 1
In order to cut out a large donut shape of about 10 cm by the gas fusing method, a very long processing time is required, the construction period is prolonged, and the processing cost is increased. In addition, the gas flame when cutting a thick steel plate by the gas fusing method as described above expands in a conical shape from the outlet of the blow pipe toward the end, and as a result, the cut surface is inclined.
It is extremely difficult to obtain a right angle cut surface, and it is also difficult to ensure dimensional accuracy. JP-A-59-165744;
In the inventions described in Japanese Patent Application Publication No. 0-23538 and Japanese Patent Application Laid-Open No. Sho 60-33962, a plurality of joining metal fittings are prepared in the circumferential direction, and these are attached to the outer periphery of a steel pipe column by welding to provide joining elements for beams. It is deemed that the intention is to avoid the difficulties mentioned above. Even if a donut-shaped outer stiffener ring could be manufactured, the work of fitting this from the end of a long steel pipe of several meters to several tens of meters, sequentially transferring it to its mounting position, and positioning the outer stiffener ring itself would be difficult. It is large and very difficult to do manually by hand. In addition, in order to perform smooth transfer in the state of being fitted to the steel pipe, the accuracy of the outer diameter of the steel pipe itself may not be constant, so that the outer diameter of the steel pipe and the inner diameter of the outer stiffener ring may not be constant. A fairly large margin (diameter difference) is required. However, the structure in which the outer stiffener ring is finally attached integrally to the steel pipe by welding or the like has a problem in that the margin (diameter difference) becomes large. For example, when the outer stiffener ring is attached to a steel pipe column by fillet welding, the gap is limited to about 2 mm, but it is practically difficult to keep this limit.
【0004】 従って、本発明の目的は、鉄骨工事の
ための工場製作工数の低減を図ることができ、作業性及
び精度の向上と品質の確保、及びコストダウンを図るこ
とが可能な外スチフナーリングの取付け方法を提供する
ことにある。Accordingly, an object of the present invention is to provide an outer stiffener ring capable of reducing the number of man-hours required for manufacturing a steelwork, improving workability and accuracy, ensuring quality, and reducing costs. It is an object of the present invention to provide a mounting method of the helmet.
【0005】[0005]
【課題を解決するための手段】上記従来技術の課題を解
決するための手段として、この発明に係る充填型鋼管コ
ンクリート柱の外スチフナーリングの取付け方法は、図
1A,Bに実施例を示しているとおり、外スチフナーリ
ング2として必要な幅Wと厚さt及び鋼管1の周長と略
同一の長さLに形成された平鋼5を、その板面と平行な
平面内において前記鋼管1の外周へ余裕をもって嵌め込
める程度にまで曲げ加工してリング形状とすること、前
記のように形成された外スチフナー用リング状物2’を
鋼管1の外周へ嵌め込み所定の取付け位置へセットする
こと(図1A)、及び前記外スチフナー用リング状物
2’をその取付け位置においてその内周面が鋼管1の外
周面に密着する状態に曲げ加工を進め、最終的に外スチ
フナー用リング状物2’の両端面2a,2bを突き合わ
せて接合しリングに完成すること(図1B)、並びに鋼
管1と外スチフナーリング5について応力、ひずみ関係
の改善と残留応力の除去を主目的とする熱処理を行なう
こと、をそれぞれ特徴とする。As a means for solving the above-mentioned problems in the prior art, a method for mounting an outer stiffener ring of a concrete-filled steel tubular column according to the present invention is shown in FIGS. 1A and 1B. As described above, the flat steel 5 formed to have the width W and thickness t required for the outer stiffener ring 2 and the length L substantially equal to the circumference of the steel pipe 1 is placed in a plane parallel to its plate surface. Bend into a ring shape to the extent that it can be fitted to the outer periphery of the steel tube with a margin, and the outer stiffener ring-shaped member 2 ′ formed as described above is fitted to the outer periphery of the steel pipe 1 and set at a predetermined mounting position. (FIG. 1A), and the outer stiffener ring-shaped object 2 ′ is bent at its mounting position such that the inner peripheral surface thereof is in close contact with the outer peripheral surface of the steel pipe 1, and finally the outer stiffener ring-shaped object 2 ′. ' The two end faces 2a and 2b are butt-joined to complete a ring (FIG. 1B), and the steel pipe 1 and the outer stiffener ring 5 are subjected to a heat treatment mainly for improving the stress-strain relationship and removing residual stress; Are characterized.
【0006】[0006]
【作用】平鋼5を曲げ加工して外スチフナーリング2を
形成し、ガス溶断法による成形は行なわないので、鋼材
の無駄が発生せず、加工を短時間に高い寸法精度で行な
える。また、平鋼5は当初完全なリングに製作しない
で、とりあえず鋼管1の外周へ余裕をもって嵌め込める
程度のリング状に形成するので、この外スチフナー用リ
ング状物2’を鋼管1に沿ってその取付け位置へ移送す
る作業が極めて容易である。Since the flat stiffener ring 2 is formed by bending the flat steel 5 and forming by the gas fusing method is not performed, no waste of the steel material occurs and the processing can be performed in a short time with high dimensional accuracy. Further, since the flat steel 5 is not formed into a complete ring at first, but is formed into a ring shape enough to be able to fit into the outer periphery of the steel pipe 1 with a margin, the outer stiffener ring 2 ′ is formed along the steel pipe 1. The work of transferring to the mounting position is extremely easy.
【0007】外スチフナーリング2は、鋼管1の外周に
密着する状態に曲げ加工して完成され、鋼管1との溶接
は行なわないので(図1B)、溶接の手間と時間を省け
る。ちなみに、充填型鋼管コンクリート柱1と鉄骨梁3
との仕口部の簡略化について研究した結果、鋼管1と外
スチフナーリング2とが密着しておれば、両者を溶接を
しないでも、柱,梁への力の流れに問題のないことが解
明されている。The outer stiffener ring 2 is completed by bending the outer stiffener ring 2 so as to be in intimate contact with the outer periphery of the steel pipe 1, and welding with the steel pipe 1 is not performed (FIG. 1B). By the way, concrete column 1 and steel beam 3
As a result of research on the simplification of the connection part, it was found that if the steel pipe 1 and the outer stiffener ring 2 are in close contact, there is no problem with the flow of force to the columns and beams without welding them. Have been.
【0008】熱処理によって鋼管1及び外スチフナーリ
ング2の応力一ひずみ関係が改善され、残留応力が除去
される結果、長期の供用に支障ないものとなる。By the heat treatment, the stress-strain relationship between the steel pipe 1 and the outer stiffener ring 2 is improved and the residual stress is removed, so that long-term operation is not hindered.
【0009】[0009]
【実施例】次に、図1A,Bに示した本発明の実施例を
説明する。図1Aは、図1Bのように完成される外スチ
フナーリング2として必要な幅W(Wは通常120〜1
50mmぐらい)と厚さt(tは通常50mmぐらい)、及
び鋼管1の周長(鋼管1の外径は通常80cmから100
cmぐらい、よって周長は251cmから314cmぐらい)
の長さLに形成された平鋼5を、その板面と平行な平面
内において前記鋼管1の外周へ余裕をもって嵌め込める
程度にまで曲げ加工してリング形状とする(例えば図1
Aの状態を参照)と共に、この外スチフナー用リング状
物2’を鋼管1の外周へ嵌め込み、所定の取り付け位置
(梁接合位置)へ移送してセット(位置決め)した段階
を示している。前記平鋼5の板取りに関しては、帯鋼又
は鋼板を圧延製造する段階で、それを予め外スチフナー
リング2として必要な幅Wと厚さtに製造し、その帯鋼
又は鋼板を必要な長さLに切断して使用する方法、又は
外スチフナーリング2として必要な幅Wの整数倍の幅を
もつ鋼板を製造し、これを所要の幅Wと長さLに切断し
て使用する方法などを実施することができる。また、図
3のように外スチフナーリング2の外周縁に梁の接合仕
口として直線部2cを設ける必要のある場合は、平鋼5
の段階で成形加工しておくのが好都合である。Next, an embodiment of the present invention shown in FIGS. 1A and 1B will be described. FIG. 1A shows a width W (W is usually 120 to 1) required for the outer stiffener ring 2 completed as shown in FIG. 1B.
50 mm, thickness t (t is usually about 50 mm), and circumferential length of steel pipe 1 (the outer diameter of steel pipe 1 is usually 80 cm to 100 mm).
cm, so the circumference is about 251cm to 314cm)
Is formed into a ring shape by bending the flat steel 5 formed to have a length L to such an extent that the flat steel 5 can be fitted to the outer periphery of the steel pipe 1 with a margin in a plane parallel to the plate surface (for example, FIG.
A), the outer stiffener ring-shaped member 2 ′ is fitted around the outer periphery of the steel pipe 1, transferred to a predetermined attachment position (beam joining position), and set (positioned). Regarding the stripping of the flat steel 5, at the stage of rolling and manufacturing a steel strip or steel sheet, it is manufactured in advance to a width W and a thickness t required as the outer stiffener ring 2, and the strip steel or steel sheet is manufactured to a required length. A method of manufacturing a steel sheet having a width that is an integral multiple of the width W required for the outer stiffener ring 2 and cutting the steel sheet to a required width W and length L, and the like. Can be implemented. In the case where it is necessary to provide a straight portion 2c as a beam connection port on the outer peripheral edge of the outer stiffener ring 2 as shown in FIG.
It is convenient to carry out the shaping at the stage.
【0010】上述の外スチフナー用リング状物2’は、
前記した取り付け位置において、図示を省略した曲げ加
工機械などを使用して同外スチフナー用リング状物2’
の内周面(内周縁)が鋼管1の外周面に沿ってぴったり
密着する状態に締め付けながら曲げ加工を進める。そう
して、最終的には図1Bに示したように外スチフナー用
リング状物2’の両端面2a、2bを突き合わせて溶接
接合しリングに完成する。前記溶接にはフラッシュバッ
ト溶接、アーク溶接、エレクトロスラグ溶接、エレクト
ロガス溶接などを実施することができる。このあと鉄骨
梁(H形鋼)の上下のフランジに対応して設けられた上
下一対の外スチフナー用リング間にウエブ接合用のガゼ
ットプレートを溶接で取り付けることも行われる。The above-mentioned outer stiffener ring 2 'is
At the above-described mounting position, the stiffener ring-shaped member 2 ′ is used by using a bending machine (not shown) or the like.
Bending is performed while tightening the inner peripheral surface (inner peripheral edge) of the steel pipe 1 along the outer peripheral surface of the steel pipe 1 so as to be in close contact therewith. Then, as shown in FIG. 1B, the both end surfaces 2a and 2b of the outer stiffener ring 2 'are finally butted and welded to complete the ring. For the welding, flash butt welding, arc welding, electroslag welding, electrogas welding, or the like can be performed. Thereafter, a gusset plate for web joining is also welded between a pair of upper and lower outer stiffener rings provided corresponding to the upper and lower flanges of the steel beam (H-section steel).
【0011】次に、前記鋼管1及びこれに取り付けられ
た外スチフナーリング2の部分を、図示を省略した熱処
理炉へ入れて、応力−ひずみ関係の改善と残留応力の除
去を主目的とする熱処理を行ない、全ての取り付け工程
が終了する。Next, the portion of the steel pipe 1 and the outer stiffener ring 2 attached to the steel pipe 1 are put into a heat treatment furnace (not shown) and subjected to a heat treatment mainly for improving the stress-strain relationship and removing the residual stress. And all the mounting steps are completed.
【0012】[0012]
【本発明が奏する効果】本発明に係る充填型鋼管コンク
リート柱の外スチフナーリングの取り付け方法によれ
ば、外スチフナーリングを製作する平鋼5の成形におい
て鋼材ロスがほとんど発生せず、経済的である。勿論、
板取り設計に手間を要さず、また、平鋼5の加工が少な
くて済み、省力化と能率化が図れる。さらに、外スチフ
ナーリング(外スチフナーリング状物2’)を鋼管1に
嵌めてその取り付け位置へ移送する作業が容易である
し、外スチフナーリング2は鋼管1に密着させるだけで
溶接やくさび止め等の取り付け手間を必要としないの
で、工数の低減による合理化、能率化によって取り付け
工期の短縮とコストダウンを期待できるのである。According to the method of mounting the outer stiffener ring of the concrete-filled steel tubular concrete column according to the present invention, almost no steel material loss occurs in forming the flat steel 5 for manufacturing the outer stiffener ring, and the method is economical. is there. Of course,
No labor is required for the planing design, and the processing of the flat steel 5 is reduced, so that labor saving and efficiency can be achieved. Further, it is easy to fit the outer stiffener ring (outer stiffener ring-shaped object 2 ') to the steel pipe 1 and transfer it to the mounting position. Since no installation work is required, it is possible to shorten the installation period and reduce costs by streamlining and reducing the number of man-hours.
【図1】A、Bは外スチフナーリングを鋼管に取り付け
る途中の段階と、取り付けの完成状態を示した平面図で
ある。FIGS. 1A and 1B are plan views showing a stage in which an outer stiffener ring is being attached to a steel pipe and a completed state of attachment.
【図2】鋼管柱と鉄骨梁による柱梁架構の立面図であ
る。FIG. 2 is an elevation view of a beam-column frame including steel pipe columns and steel beams.
【図3】鋼管柱の平面図である。FIG. 3 is a plan view of a steel pipe column.
2 外スチフナーリング 1 鋼管 5 平鋼 2’ 外スチフナー用リング状物 2a、2b 端面 2 outer stiffener ring 1 steel pipe 5 flat steel 2 'outer stiffener ring 2a, 2b end face
フロントページの続き (51)Int.Cl.7 識別記号 FI E04C 3/34 E04C 3/34 (72)発明者 原 誠 東京都中央区銀座八丁目21番1号 株式 会社竹中工務店東京本店内 (72)発明者 小南 勝義 東京都中央区銀座八丁目21番1号 株式 会社竹中工務店東京本店内 (72)発明者 寺町 久志 東京都中央区銀座八丁目21番1号 株式 会社竹中工務店東京本店内 (72)発明者 居福 英人 東京都中央区銀座八丁目21番1号 株式 会社竹中工務店東京本店内 (56)参考文献 特開 平4−302628(JP,A) 実開 昭50−104412(JP,U) 実開 昭53−129116(JP,U) 特許2754097(JP,B2) 特許2961455(JP,B2) 特公 平2−48699(JP,B2) (58)調査した分野(Int.Cl.7,DB名) E04C 3/32 E04C 3/34 E04B 1/24 E04B 1/30 E04B 1/58 508 B23K 9/00 501 Continued on the front page (51) Int.Cl. 7 Identification symbol FI E04C 3/34 E04C 3/34 (72) Inventor Makoto Hara 8-21-1, Ginza, Chuo-ku, Tokyo Inside Takenaka Corporation Tokyo Main Store ( 72) Inventor Katsuyoshi Konan 8-21-1, Ginza, Chuo-ku, Tokyo Inside the Takenaka Corporation Tokyo Main Store (72) Inventor Hisashi Teramachi 8-2-1 Ginza, Chuo-ku, Tokyo Tokyo Main Takenaka Corporation Inside shop (72) Inventor Hideto Ifuku 8-21-1, Ginza, Chuo-ku, Tokyo Inside Takenaka Corporation Tokyo Main Store (56) References JP-A-4-302628 (JP, A) 104412 (JP, U) JP-A-53-129116 (JP, U) Patent 2754097 (JP, B2) Patent 2961455 (JP, B2) JP 2-48699 (JP, B2) (58) Fields investigated (Int) .Cl. 7 , DB name) E04C 3/32 E04C 3/34 E04B 1/24 E04B 1/30 E04B 1/58 508 B23K 9/00 501
Claims (1)
さ及び鋼管の周長と略同一の長さに形成された平鋼を、
その板面と平行な平面内において前記鋼管の外周へ余裕
をもって嵌め込める程度にまで曲げ加工してリング形状
とすること、前記のように形成された外スチフナー用リ
ング状物を鋼管の外周へ嵌め込み所定の取付け位置へセ
ットすること、及び前記外スチフナー用リング状物をそ
の取付け位置においてその内周面が鋼管の外周面に密着
する状態に曲げ加工を進め、最終的に外スチフナー用リ
ング状物の両端面を突き合わせて接合しリングに完成す
ること、並びに鋼管と外スチフナーリングについて応
力、ひずみ関係の改善と残留応力除去を主目的とする熱
処理を行なうこと、をそれぞれ特徴とする、充填型鋼管
コンクリート柱の外スチフナーリングの取付け方法。1. A flat steel formed to have a width and thickness required as an outer stiffener ring and a length substantially equal to a circumference of a steel pipe,
In a plane parallel to the plate surface, the steel pipe is bent into a ring shape to an extent that it can be fitted to the outer circumference of the steel pipe with a margin, and the ring-shaped outer stiffener formed as described above is inserted into the outer circumference of the steel pipe. Setting it to a predetermined mounting position, and bending the outer stiffener ring-shaped object at its mounting position so that its inner peripheral surface is in close contact with the outer peripheral surface of the steel pipe; Filled steel pipes, characterized in that they are joined by joining both end faces of the steel pipe to complete a ring, and that the steel pipe and the outer stiffener ring are subjected to heat treatment for the purpose of improving stress and strain relations and removing residual stress. How to install stiffener rings outside concrete columns.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP04140362A JP3079331B2 (en) | 1992-06-01 | 1992-06-01 | Installation method of outer stiffener ring of concrete column filled with steel pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP04140362A JP3079331B2 (en) | 1992-06-01 | 1992-06-01 | Installation method of outer stiffener ring of concrete column filled with steel pipe |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH05331966A JPH05331966A (en) | 1993-12-14 |
JP3079331B2 true JP3079331B2 (en) | 2000-08-21 |
Family
ID=15267064
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP04140362A Expired - Fee Related JP3079331B2 (en) | 1992-06-01 | 1992-06-01 | Installation method of outer stiffener ring of concrete column filled with steel pipe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3079331B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113001081B (en) * | 2021-02-02 | 2024-05-07 | 中国水电四局(兰州)机械装备有限公司 | Stiffening ring trolley |
CN113001092B (en) * | 2021-02-02 | 2023-01-06 | 中国水电四局(兰州)机械装备有限公司 | Six-equal-division steel pipe stiffening ring assembling equipment |
-
1992
- 1992-06-01 JP JP04140362A patent/JP3079331B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH05331966A (en) | 1993-12-14 |
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LAPS | Cancellation because of no payment of annual fees |