JPH0665906A - Manufacture of box girder for bridge - Google Patents
Manufacture of box girder for bridgeInfo
- Publication number
- JPH0665906A JPH0665906A JP24573392A JP24573392A JPH0665906A JP H0665906 A JPH0665906 A JP H0665906A JP 24573392 A JP24573392 A JP 24573392A JP 24573392 A JP24573392 A JP 24573392A JP H0665906 A JPH0665906 A JP H0665906A
- Authority
- JP
- Japan
- Prior art keywords
- box girder
- box
- welding
- reinforcing material
- panel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Bridges Or Land Bridges (AREA)
- Automatic Assembly (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、橋梁用箱桁の製造方
法、特に、箱桁の製造が容易且つ短時間に行える橋梁用
箱桁の製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a bridge box girder, and more particularly to a method for manufacturing a bridge box girder that can be easily and quickly manufactured.
【０００２】[0002]
【従来の技術】橋梁用箱桁とは、図２に示すように、鋼
板に補強材を溶接したものから構成される上フランジ用
箱桁パネル１および下フランジ用箱桁パネル２の両端部
に、鋼板に補強材を溶接したものからなるウェブ用箱桁
パネル３がそれぞれ垂直に溶接され、全体として箱型に
形成されたものである。図示の箱桁は、湾曲した箱桁の
例である。2. Description of the Related Art As shown in FIG. 2, a bridge box girder is provided at both ends of an upper flange box girder panel 1 and a lower flange box girder panel 2 which are made by welding a reinforcing material to a steel plate. The web box girder panels 3 each made of a steel plate welded with a reinforcing material are vertically welded to form a box shape as a whole. The illustrated box girder is an example of a curved box girder.
【０００３】このような箱桁同士を互いにその長手方向
に連結するには、図３に示すように、ボルト孔が形成さ
れた連結板４によって行われる。従って、各箱桁パネル
の端部には、連結板４のボルト孔と合致するボルト孔を
形成する必要がある。To connect such box girders to each other in the longitudinal direction thereof, as shown in FIG. 3, a connecting plate 4 having bolt holes is formed. Therefore, it is necessary to form a bolt hole that matches the bolt hole of the connecting plate 4 at the end of each box girder panel.
【０００４】従来、箱桁パネルおよび連結板へのボルト
孔の明け方として、以下のような方法が採られていた。Conventionally, the following method has been adopted as a method of opening bolt holes in a box girder panel and a connecting plate.
【０００５】即ち、補強材を鋼板に溶接する前に、即
ち、箱桁パネルの組立て前に鋼板に孔明けを行う。この
際、孔明け位置は、溶接による鋼板の収縮量を想定して
決め、連結板の孔は、正規の孔径より小さめに形成す
る。そして、補強材の仮付け時に、パネル全体の寸法に
合わせて連結板の孔のリーミングを行う。（以下、この
Ａ工法という）That is, before the reinforcing material is welded to the steel plate, that is, before the box girder panel is assembled, the steel plate is perforated. At this time, the hole-drilling position is determined in consideration of the shrinkage amount of the steel plate due to welding, and the hole of the connecting plate is formed smaller than the regular hole diameter. Then, when the reinforcing material is temporarily attached, the holes of the connecting plate are reamed according to the dimensions of the entire panel. (Hereafter referred to as this A method)
【０００６】箱桁パネル用鋼板へのボルト孔の孔明け
は、Ａ工法と同様に行い、箱桁の組立てが完了した後、
箱桁の寸法を計測し、箱桁全体の寸法が所定精度になる
ように、連結板の寸法を決定し、この後、連結板に孔明
けを行う。（以下、このＢ工法という）The bolt holes are drilled in the steel plate for the box girder panel in the same manner as in the method A, and after the assembly of the box girder is completed,
The dimensions of the box girder are measured, the dimensions of the connecting plate are determined so that the dimensions of the entire box girder have a predetermined accuracy, and then the connecting plate is perforated. (Hereafter referred to as this B method)
【０００７】箱桁パネルを箱型に組立てた後に、箱桁の
寸法を計測し、箱桁パネルに孔明けを行い、連結板に
は、予め、正規の寸法で孔明けを行う。（以下、このＣ
工法という）After the box girder panel is assembled into a box shape, the size of the box girder is measured, the box girder panel is perforated, and the connecting plate is preliminarily perforated with a regular size. (Hereafter, this C
Construction method)
【０００８】[0008]
【発明が解決しようとする課題】しかしながら、上述し
たＡ〜Ｃ工法は、以下のような問題を有している。即
ち、Ａ工法は、溶接による鋼板の収縮量は、想定値のた
めに誤差が大きく、しかも、補強材の仮付け時に、連結
板の孔のリーミングを行うので、箱桁製造作業に長時間
を要する。However, the above-mentioned construction methods A to C have the following problems. That is, in the method A, the shrinkage amount of the steel plate due to welding has a large error due to the assumed value, and since the holes of the connecting plate are reamed when the reinforcing material is temporarily attached, the box girder manufacturing work takes a long time. It costs.
【０００９】Ｂ工法は、連結板が全て個別の寸法を有す
るものとなるので、連結板の作製に時間を要する。[0009] In the B method, since the connecting plates all have individual dimensions, it takes time to produce the connecting plates.
【００１０】Ｃ工法は、箱桁の組立てが完了した後に孔
明けを行うので、孔明けに自動ボール盤を使用すること
ができず、人手作業となり、極めて非能率的である。In the C method, since the boring is performed after the box girder is completely assembled, the automatic drilling machine cannot be used for the boring, which is a manual work and is extremely inefficient.
【００１１】従って、この発明の目的は、箱桁パネルに
形成するボルト孔の寸法精度が向上し、箱桁パネルへの
孔明けの自動化が図れ、これによって、箱桁の製造が容
易且つ短時間に行える橋梁用箱桁の製造方法を提供する
ことにある。Therefore, the object of the present invention is to improve the dimensional accuracy of the bolt holes formed in the box girder panel and to automate the drilling of holes in the box girder panel, which facilitates the manufacture of the box girder in a short time. Another object of the present invention is to provide a method of manufacturing a box girder for a bridge that can be performed.
【００１２】[0012]
【課題を解決するための手段】この発明は、所定形状に
切断されたフランジおよびウェブ用鋼板に補強材を仮付
けしてフランジおよびウェブ用箱桁パネルを組み立て、
次いで、前記補強材の本溶接を行い、次いで、前記補強
材の溶接により前記箱桁パネルに生じた溶接歪を除去
し、次いで、前記箱桁パネルにボルト孔を明け、そし
て、前記箱桁パネルを箱状に溶接により組み立て、この
ようにして組み立てられた箱桁を互いに連結するための
連結板は、予め正規寸法で製作しておくことに特徴を有
するものである。SUMMARY OF THE INVENTION The present invention assembles a flange and a box girder panel for a web by temporarily attaching a reinforcing material to a flange and a steel plate for a web cut into a predetermined shape,
Then, the main welding of the reinforcing material is performed, then, the welding distortion generated in the box girder panel by the welding of the reinforcing material is removed, and then a bolt hole is formed in the box girder panel, and the box girder panel Is assembled into a box by welding, and the connecting plate for connecting the box girders thus assembled to each other is characterized in that it is manufactured in advance with regular dimensions.
【００１３】この発明の、橋梁用箱桁の製造方法の一実
施態様を、図面を参照しながら説明する。図１は、この
発明の、橋梁用箱桁の製造方法を適用した、箱桁パネル
の自動製造設備の概略斜視図である。An embodiment of a method for manufacturing a bridge box girder according to the present invention will be described with reference to the drawings. FIG. 1 is a schematic perspective view of an automatic box girder panel manufacturing facility to which the method for manufacturing a bridge box girder of the present invention is applied.
【００１４】図１において、Ａは、上下フランジ用箱桁
パネルの鋼板５に縦リブ６を自動的に仮付けする自動仮
付溶接工程、Ｂは、仮付けされた縦リブ６を複数台の溶
接ロボット７により自動的に溶接する本溶接工程、Ｃ
は、縦リブ６の溶接により生じた歪を歪取機８によって
取る歪取工程、そして、Ｄは、歪取りされた鋼板５の所
定位置に孔明機９によって自動的に孔を明ける孔明工程
であり、次の仕上工程において、孔明けされた鋼板５の
所定位置に横リブ10が溶接される。これらの工程を経
て、フランジ用箱桁パネルが製作される。In FIG. 1, A is an automatic tack welding process for automatically tacking the vertical ribs 6 to the steel plate 5 of the box girder panel for the upper and lower flanges, and B is a plurality of temporary ribs 6 temporarily tacked. Main welding process of automatically welding by welding robot 7, C
Is a strain removing step in which the strain generated by the welding of the vertical ribs 6 is taken by the strain removing machine 8, and D is a drilling step in which a hole is automatically drilled in a predetermined position of the strained steel plate 5 by the punching machine 9. Then, in the next finishing step, the horizontal rib 10 is welded to a predetermined position of the perforated steel plate 5. Through these steps, a box girder panel for flanges is manufactured.
【００１５】図１に示した、箱桁パネルの自動製造設備
は、上述したフランジ製造ラインとは別に、ウェブ製造
ラインが併設されている。このウェブ製造ラインにおい
て、ａは、箱桁パネルのウェブ用鋼板11に仮付けされた
バーティカルスティフナ12およびホリゾンタルスティフ
ナ13の本溶接を複数台の溶接ロボット14によって自動的
に行う溶接工程、ｂは、溶接歪を歪取機15によって取る
歪取工程、そして、ｃは、歪取りされた鋼板11の所定位
置に孔明機16によって自動的に孔を明ける孔明工程であ
る。これらの工程を経て、ウェブ用箱桁パネルが製作さ
れる。In the automatic box girder panel manufacturing facility shown in FIG. 1, a web manufacturing line is provided in addition to the above-described flange manufacturing line. In this web production line, a is a welding step in which main welding of the vertical stiffener 12 and the horizontal stiffener 13 temporarily attached to the steel plate 11 for the web of the box girder panel is automatically performed by a plurality of welding robots 14, and b is Strain removing step for removing welding strain by the strain removing machine 15, and c is a drilling step for automatically making a hole at a predetermined position of the steel sheet 11 after strain removal by the punching machine 16. A web box girder panel is manufactured through these processes.
【００１６】このようにして、フランジおよびウェブ用
箱桁パネルが製作されたら、これらを箱状に溶接して橋
梁用箱桁が製造される。After the flange and the web box girder panel are manufactured in this manner, these are welded into a box shape to manufacture a bridge box girder.
【００１７】[0017]
【発明の効果】以上説明したように、この発明によれ
ば、歪取後の箱桁パネル用鋼板に孔明けを行うので、極
めて高い寸法精度でボルト孔を箱桁パネル用鋼板に形成
することができる。従って、連結板は、正規寸法のもの
を一度にまとめて製作することができる。しかも、箱桁
パネルを箱型に組立てる前に孔明けを行うので、高能率
で孔明けが行えるNCボール盤を使用することができる。
このようなことから、箱桁の製造が容易且つ短時間に行
えるといった有用な効果がもたらされる。As described above, according to the present invention, holes are formed in the steel plate for box girder panel after the strain is removed, so that the bolt holes are formed in the steel plate for box girder panel with extremely high dimensional accuracy. You can Therefore, the connecting plate can be manufactured in a batch with regular sizes. Moreover, since the punching is performed before the box girder panel is assembled into the box shape, it is possible to use the NC drilling machine capable of punching with high efficiency.
From this, a useful effect that the box girder can be easily manufactured in a short time is brought about.
【図１】この発明の、橋梁用箱桁の製造方法を適用し
た、箱桁パネルの自動製造設備の概略斜視図である。FIG. 1 is a schematic perspective view of an automatic box girder panel manufacturing facility to which the method for manufacturing a bridge box girder of the present invention is applied.
【図２】橋梁用箱桁の部分斜視図である。FIG. 2 is a partial perspective view of a bridge box girder.
【図３】連結板によって連結された箱桁の部分正面図で
ある。FIG. 3 is a partial front view of the box girders connected by a connecting plate.
１：上フランジ用箱桁パネル、 ２：下フランジ用箱桁パネル、 ３：ウェブ用箱桁パネル、 ４：連結板、 ５：鋼板、 ６：縦リブ、 ７：溶接ロボット、 ８、15：歪取機、 ９、16：孔明機、 10：横リブ、 11：鋼板、 12：バーティカルスティフナ、 13：ホリゾンタルスティフナ、 14：溶接ロボット。 1: Box flange girder panel for upper flange, 2: Box girder panel for lower flange, 3: Web box girder panel, 4: Connecting plate, 5: Steel plate, 6: Vertical rib, 7: Welding robot, 8, 15: Distortion Taker, 9, 16: Drilling machine, 10: Horizontal rib, 11: Steel plate, 12: Vertical stiffener, 13: Horizontal stiffener, 14: Welding robot.
フロントページの続き (72)発明者 桑村 忠明 東京都千代田区丸の内一丁目１番２号 日 本鋼管株式会社内 (72)発明者 四方 淳夫 東京都千代田区丸の内一丁目１番２号 日 本鋼管株式会社内Front Page Continuation (72) Inventor Tadaaki Kuwamura 1-2 1-2 Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Co., Ltd. (72) Inventor Atsushi Shikata No. 1-2 Marunouchi, Chiyoda-ku, Tokyo Nihon Steel Pipe Co., Ltd. In the company
Claims (1)
ェブ用鋼板に補強材を仮付けしてフランジおよびウェブ
用箱桁パネルを組み立て、次いで、前記補強材の本溶接
を行い、次いで、前記補強材の溶接により前記箱桁パネ
ルに生じた溶接歪を除去し、次いで、前記箱桁パネルに
ボルト孔を明け、そして、前記箱桁パネルを箱状に溶接
により組み立て、このようにして組み立てられた箱桁を
互いに連結するための連結板は、予め正規寸法で製作し
ておくことを特徴とする、橋梁用箱桁の製造方法。1. A flange and a web steel plate cut into a predetermined shape are temporarily attached with a reinforcing material to assemble a flange and a web box girder panel, then the main welding of the reinforcing material is performed, and then the reinforcing material. By removing the welding distortion caused in the box girder panel by welding, then, by bolting holes in the box girder panel, and by assembling the box girder panel by welding into a box shape, the box thus assembled A method for manufacturing a box girder for a bridge, characterized in that a connecting plate for connecting the girders to each other is manufactured in advance with regular dimensions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24573392A JP2745998B2 (en) | 1992-08-20 | 1992-08-20 | Method of manufacturing bridge girder for bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24573392A JP2745998B2 (en) | 1992-08-20 | 1992-08-20 | Method of manufacturing bridge girder for bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0665906A true JPH0665906A (en) | 1994-03-08 |
| JP2745998B2 JP2745998B2 (en) | 1998-04-28 |
Family
ID=17137996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24573392A Expired - Fee Related JP2745998B2 (en) | 1992-08-20 | 1992-08-20 | Method of manufacturing bridge girder for bridge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2745998B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112404806A (en) * | 2020-10-30 | 2021-02-26 | 渤海造船厂集团有限公司 | Automatic assembling and welding device and method for bent ribs |
| CN112548503A (en) * | 2020-12-06 | 2021-03-26 | 中国二冶集团有限公司 | Manufacturing and mounting method of variable-cross-section thin-wall twisted box-type structure |
| CN115070245A (en) * | 2022-06-23 | 2022-09-20 | 中铁山桥集团有限公司 | Manufacturing method of UHPC steel box composite beam |
-
1992
- 1992-08-20 JP JP24573392A patent/JP2745998B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112404806A (en) * | 2020-10-30 | 2021-02-26 | 渤海造船厂集团有限公司 | Automatic assembling and welding device and method for bent ribs |
| CN112548503A (en) * | 2020-12-06 | 2021-03-26 | 中国二冶集团有限公司 | Manufacturing and mounting method of variable-cross-section thin-wall twisted box-type structure |
| CN112548503B (en) * | 2020-12-06 | 2024-01-05 | 中国二冶集团有限公司 | Manufacturing and mounting method for variable-section thin-wall twisted box-type structure |
| CN115070245A (en) * | 2022-06-23 | 2022-09-20 | 中铁山桥集团有限公司 | Manufacturing method of UHPC steel box composite beam |
| CN115070245B (en) * | 2022-06-23 | 2024-05-24 | 中铁山桥集团有限公司 | Manufacturing method of UHPC steel box composite beam |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2745998B2 (en) | 1998-04-28 |
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