JPH07109084B2 - Bridge extrusion method - Google Patents
Bridge extrusion methodInfo
- Publication number
- JPH07109084B2 JPH07109084B2 JP5003591A JP359193A JPH07109084B2 JP H07109084 B2 JPH07109084 B2 JP H07109084B2 JP 5003591 A JP5003591 A JP 5003591A JP 359193 A JP359193 A JP 359193A JP H07109084 B2 JPH07109084 B2 JP H07109084B2
- Authority
- JP
- Japan
- Prior art keywords
- jack
- girder
- slide
- vertical
- bridge
- 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
- Bridges Or Land Bridges (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、橋梁の施工時におい
て、橋梁における桁の架設時に使用する自動化した橋梁
押出し工法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automated bridge extrusion method used when constructing a girder on a bridge when constructing the bridge.
【０００２】[0002]
【従来の技術】従来、この種の橋梁押出し工法として
は、図４に示すように、水平ジャッキ２０の伸縮動作に
よって、滑り板２１上を摺動する支持部材２２の上端面
に、橋梁における桁２３を鉛直ジャッキ２４の利用で設
置する。そして、水平ジャッキ２０で支持部材２２を引
き寄せることにより、桁２３の、即ち、橋梁の押出しを
行うものが一般に知られている。2. Description of the Related Art Conventionally, as a bridge extrusion method of this type, as shown in FIG. 4, when a horizontal jack 20 is extended and contracted, a girder in a bridge is attached to an upper end surface of a support member 22 that slides on a slide plate 21. 23 is installed by using a vertical jack 24. It is generally known that the horizontal jack 20 pulls the support member 22 to push out the girder 23, that is, the bridge.
【０００３】なお、支持部材２２への桁２３の設置、即
ち、鉛直ジャッキ２４での支持状態から支持部材２２で
の支持状態へ移行させる時には、先ず、鉛直ジャッキ２
４で桁２３を上昇させると共に、支持部材２２の上端面
に、複数枚の高さ調整鉄板２５を設けて高さ調整を行
う。その後、この高さ調整鉄板２５上に、鉛直ジャッキ
２４で下降させることにより、桁２３を設置すること
で、支持部材２２への桁２３の設置が実施される。When the girder 23 is installed on the support member 22, that is, when the support state of the vertical jack 24 is changed to the support state of the support member 22, first, the vertical jack 2 is used.
The girder 23 is raised at 4, and a plurality of height adjusting iron plates 25 are provided on the upper end surface of the supporting member 22 to adjust the height. Then, the girder 23 is installed on the support member 22 by lowering the vertical adjustment jack 24 on the height-adjusting iron plate 25 to install the girder 23.
【０００４】[0004]
【この発明が解決しようとする課題】しかし、前述した
従来の押出し工法で使用する装置では、押出し移動時に
桁２３を支持する支持部材２２の上端面に、高さ調整鉄
板２５を設置する作業が必要となっている。そのため、
高さ調整を正確に行いながらの、高さ調整鉄板２５の設
置が、人力を要する面倒で時間のかかる作業となり、桁
２３の押出し作業全体を時間のかかるものとしてしま
う。However, in the apparatus used in the above-mentioned conventional extrusion method, it is necessary to install the height adjusting iron plate 25 on the upper end surface of the support member 22 that supports the girder 23 during the extrusion movement. Is needed. for that reason,
Installing the height-adjusting iron plate 25 while accurately adjusting the height is a labor-intensive and time-consuming operation that requires manpower, and the entire extrusion operation of the girder 23 is time-consuming.
【０００５】また、仮支持用の鉛直ジャッキ２４から移
動時支持用の支持部材２２へ支持状態を移行させる、受
け替え時に、鉛直ジャッキ２４によって桁２３を上下動
させなければならない。そして、この桁２３の上下動作
業も、危険で面倒な作業であることから、桁２３の押出
し作業全体を時間のかかるものとしてしまう。Further, the vertical jack 24 must be moved up and down by the vertical jack 24 at the time of transfer, in which the supporting state is transferred from the vertical jack 24 for temporary support to the supporting member 22 for supporting during movement. Since the up-and-down operation of the girder 23 is also a dangerous and troublesome work, the entire extruding work of the girder 23 takes time.
【０００６】この発明は前述した事情に鑑みて創案され
たもので、その目的は押出し工法による橋梁架設時にお
いて、橋桁の受け替え作業を容易かつ短時間で正確に行
えることができ、桁の押出し作業全体を自動化したもの
にすることのできる橋梁押出し工法を提供することにあ
る。The present invention was devised in view of the above-mentioned circumstances, and an object thereof is to enable bridge girder replacement work to be carried out easily and accurately in a short time when a bridge is erected by an extrusion method. It is to provide a bridge extrusion method capable of automating the whole work.
【０００７】[0007]
【課題を解決するための手段】このような構成から、例
えば、鉛直ジャッキからスライドジャッキへ桁の受け替
えを行う際において、この発明では、桁を鉛直ジャッキ
で受けている状態でスライドジャッキを上昇させ、この
とき、スライドジャッキで桁を上下降させないように油
圧コントロールしながら鉛直ジャッキからスライドジャ
ッキに反力を受け替えることができるようにしている。
このときのジャッキ圧力Ｐｊは、桁による反力Ｒに対し
て０＜Ｐｊ＜Ｒである。According to the present invention, when the girder is transferred from the vertical jack to the slide jack, the slide jack is raised while the girder is being received by the vertical jack. At this time, the reaction force can be transferred from the vertical jack to the slide jack while hydraulically controlling the slide jack so that the girder does not move up and down.
The jack pressure Pj at this time is 0 <Pj <R with respect to the reaction force R due to the girder.
【０００８】[0008]
【実施例】以下、この発明の橋梁押出し工法を、図示す
る実施例によって説明する。The bridge extrusion method of the present invention will be described below with reference to the illustrated embodiments.
【０００９】橋梁における桁２を押出し工法にて橋脚間
に架設する時に使用する橋梁押出し装置１（図１参照）
は、桁２を仮支持する鉛直ジャッキ３と、この鉛直ジャ
ッキ３から押出し方向へ延びる同一線上に位置してお
り、橋脚４上に設置された滑り板５と、この滑り板５上
を押出し方向へ摺動自在に設けられているスライドジャ
ッキ６と、滑り板５の押出し方向端部に固定されてお
り、スライドジャッキ６を伸縮作用で摺動させる水平ジ
ャッキ７と、鉛直ジャッキ３およびスライドジャッキ６
への油圧状態を制御する制御部８とを備えてなってい
る。A bridge pushing-out device 1 (see FIG. 1) used when the girders 2 of the bridge are erected between the piers by the pushing-out method.
Is located on the same line as the vertical jack 3 for temporarily supporting the girder 2 and extending from the vertical jack 3 in the pushing direction, and the sliding plate 5 installed on the pier 4 and the pushing direction on the sliding plate 5. A slide jack 6 slidably mounted on the slide plate 5, a horizontal jack 7 fixed to the end of the sliding plate 5 in the pushing direction, and sliding the slide jack 6 by expansion and contraction, the vertical jack 3 and the slide jack 6
And a control unit 8 for controlling the hydraulic pressure state.
【００１０】そして、制御部８は、鉛直ジャッキ３およ
びスライドジャッキ６のジャッキ受圧面における圧力
を、桁２から発生している反力と近い状態に調整できる
ように構成されている。例えば、各ジャッキに設けた圧
力計および圧力変換器からの信号が入力されるスキャナ
ーボックスと、コンピュータおよび静歪測定器，中央制
御盤等から構成されている。The control unit 8 is constructed so that the pressure on the jack pressure receiving surfaces of the vertical jack 3 and the slide jack 6 can be adjusted to a state close to the reaction force generated from the girder 2. For example, it is composed of a scanner box to which signals from a pressure gauge and a pressure converter provided in each jack are input, a computer, a static strain measuring device, a central control panel and the like.
【００１１】この制御部８を使用しての桁２の受け替え
について、例えば、鉛直ジャッキ３からスライドジャッ
キ６への受け替えで詳述すると（図２参照）、先ず、油
圧ポンプ９を作動させて、スライドジャッキ６のストロ
ークを伸ばし、桁下面に接触させると共に、引き続き油
圧を増加させていく。Replacing the girder 2 using the control unit 8 will be described in detail by, for example, replacing the vertical jack 3 with the slide jack 6 (see FIG. 2). First, the hydraulic pump 9 is operated. Then, the stroke of the slide jack 6 is extended to contact the lower surface of the girder, and the hydraulic pressure is continuously increased.
【００１２】ただし、この時に、制御部８で、スライド
ジャッキ６のジャッキ圧力Ｐｊを、鉛直ジャッキ３で受
けている発生反力Ｒよりも小さくすることにより、桁２
は上昇しない。なお、ジャッキ圧力Ｐｊは、ジャッキ面
の受圧面積Ａにポンプ圧Ｐを掛けること（Ｐｊ＝Ａ×
Ｐ）で求められるものである。However, at this time, the control unit 8 makes the jack pressure Pj of the slide jack 6 smaller than the generated reaction force R received by the vertical jack 3, so that the girder 2
Does not rise. The jack pressure Pj is obtained by multiplying the pressure receiving area A on the jack surface by the pump pressure P (Pj = A ×
P) is required.
【００１３】次に、スライドジャッキ６のジャッキ圧力
がＰｊとなったら、油圧ポンプ１０を作動させて、鉛直
ジャッキ３のジャッキ圧力をゼロとし、鉛直ジャッキ３
を降下させる。そして、この鉛直ジャッキ３を降下させ
ることにより、反力の差ΔＲ＝（桁による反力）−Ｐｊ
が、スライドジャッキ６に移行する。Next, when the jack pressure of the slide jack 6 reaches Pj, the hydraulic pump 10 is operated to bring the jack pressure of the vertical jack 3 to zero, and the vertical jack 3
To drop. Then, by lowering the vertical jack 3, the reaction force difference ΔR = (reaction force due to the girder) −Pj
Shifts to the slide jack 6.
【００１４】このような構成からなる橋梁押出し装置１
を使用して、橋梁における桁２の押出しを行うには、次
に述べるようにして行う。A bridge pushing-out apparatus 1 having such a structure
To extrude the girder 2 on the bridge by using, the following is performed.
【００１５】即ち、図３に示すような押出し作業行程に
より、桁２を支持したスライドジャッキ６を水平ジャッ
キ７で移動させた後、即ち、桁２を押出した後、この桁
２の支持を再び鉛直ジャッキ３へ移すと共に、スライド
ジャッキ６を元の位置へ戻して、桁２の支持をスライド
ジャッキ６へ移す。That is, after the slide jack 6 supporting the girder 2 is moved by the horizontal jack 7 by the pushing work process as shown in FIG. 3, that is, after the girder 2 is extruded, the girder 2 is supported again. While moving to the vertical jack 3, the slide jack 6 is returned to the original position, and the support of the girder 2 is moved to the slide jack 6.
【００１６】そして、このような図４の工程を順次繰り
返すことによって、桁２の押出し作業が完了する。Then, the extrusion operation of the girder 2 is completed by sequentially repeating the steps shown in FIG.
【００１７】[0017]
【発明の効果】この発明によれば、押出し架設時に桁か
ら発生する反力を、鉛直ジャッキおよびスライドジャッ
キと、制御部とにより、桁を上下動させることなく簡単
に調整することができる。そのため、押出し工法におけ
る桁の架設作業を自動化し、容易に短時間で行うことが
できる。According to the present invention, the reaction force generated from the girder at the time of pushing and erection can be easily adjusted by the vertical jack and the slide jack and the control unit without moving the girder up and down. Therefore, the work of installing the girder in the extrusion method can be automated, and can be easily performed in a short time.
【００１８】このことは、従来の押出し工法と異なり、
桁を上下動させることなく、反力の正確な受け替えが行
えるので、桁下面の僅かな高さの誤差が桁応力に大きな
影響を及ぼす多室箱桁や、斜橋への押出し工法を可能と
することができる。This is different from the conventional extrusion method.
Since the reaction force can be accurately received without moving the girder up and down, the extrusion method for multi-chamber box girders and oblique bridges where slight errors in the height of the girder greatly affect girder stress is possible. Can be
【００１９】また、公知技術に比べ、この発明では鉛直
ジャッキ，スライドジャッキ，制御部によって、押出し
作業の自動化を進めることができて、大幅な省力化を図
ることができる。さらに、制御部によって押出し架設時
の反力を鉛直しジャッキ上及びスライドジャッキ上のい
ずれの場合においても継続して計測できるため、集中的
な施工管理を容易に行えると共に、制御部によって任意
に桁の反力値を変えることが可能である。Further, as compared with the known technique, in the present invention, the vertical jack, the slide jack, and the control unit can promote the automation of the extrusion work, and can save a great amount of labor. Furthermore, since the control unit can continuously measure the reaction force during extrusion and erection on both vertical jacks and slide jacks, centralized construction management can be performed easily, and the control unit can arbitrarily change the girder. It is possible to change the reaction force value of.
【００２０】しかも、各ジャッキおよび制御部による反
力調整機能を有していることから、現場において高さ調
整が不要となると共に、押出し工法の適用橋梁形式の拡
大および工法の自動化を図ることができる。Moreover, since the jacks and the control section have a reaction force adjusting function, it is not necessary to adjust the height at the site, and it is possible to expand the bridge type to which the extrusion method is applied and to automate the method. it can.
【図１】この発明の工法を実施する橋梁押出し装置を示
す概略図である。FIG. 1 is a schematic view showing a bridge pushing apparatus for carrying out the construction method of the present invention.
【図２】この発明の橋梁押出し装置における鉛直ジャッ
キとスライドジャッキとの桁受け替え状況を示す概略図
である。FIG. 2 is a schematic view showing a girder exchange state between a vertical jack and a slide jack in the bridge pushing apparatus of the present invention.
【図３】この発明の橋梁押出し装置による桁の押出し作
業を示す工程図である。FIG. 3 is a process drawing showing the work of pushing out the girder by the bridge pushing out device of the present invention.
【図４】従来の橋梁押出し装置を示す概略図である。FIG. 4 is a schematic view showing a conventional bridge pushing device.
１…橋梁押出し装置、２…桁、３…鉛直ジャッキ、４…
橋脚、５…滑り板、６…スライドジャッキ、７…水平ジ
ャッキ、８…制御部、９…油圧ポンプ、１０…油圧ポン
プ、１１…スライド架台、１２…ライナープレート。1 ... Bridge extrusion device, 2 ... Girder, 3 ... Vertical jack, 4 ...
Bridge pier, 5 slide plate, 6 slide jack, 7 horizontal jack, 8 control unit, 9 hydraulic pump, 10 hydraulic pump, 11 slide stand, 12 liner plate.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 地代所 勝男 東京都新宿区荒木町13番地の４ 住友建設 株式会社内 (56)参考文献 特公 昭58−36685（ＪＰ，Ｂ２) 特公 昭60−4322（ＪＰ，Ｂ２) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsuo Jirodai 4 4 13-Arakicho, Shinjuku-ku, Tokyo Within Sumitomo Construction Co., Ltd. (56) References JP 58-36685 (JP, B2) JP 60 -4322 (JP, B2)
Claims (1)
から延びる押出し方向への同一線上に位置しており、前
記橋脚上に設置された滑り板と、この滑り板上を押出し
方向へ摺動自在に設けられているスライドジャッキと、
前記滑り板の押出し方向端部に固定されており、前記ス
ライドジャッキを伸縮作用で摺動させる水平ジャッキ
と、前記鉛直ジャッキおよびスライドジャッキへの油圧
状態を制御する制御部とを備えてなり、 前記制御部は、鉛直ジャッキおよびスライドジャッキの
ジャッキ受圧面における圧力を、桁から発生している反
力と近い状態に調整できるように構成されており、先ず
油圧ポンプを作動させてスライドジャッキのストローク
を伸ばし、鉛直ジャッキで受けている桁が上昇しないよ
うに桁下面に接触させ、次いで鉛直ジャッキを降下さ
せ、桁を支持したスライドジャッキを水平ジャッキで移
動させることにより桁を押出した後、この桁の支持を鉛
直ジャッキへ移す工程を順次繰り返すことを特徴とする
橋梁押出し工法。1. A method for extruding a girder on a bridge, wherein a vertical jack for temporarily supporting the girder and a vertical jack extending from the vertical jack are located on the same line in the extruding direction, and are installed on the pier. A plate and a slide jack slidably provided on the sliding plate in the pushing direction,
A horizontal jack that is fixed to the end of the sliding plate in the pushing direction and that slides the slide jack by expansion and contraction; and a control unit that controls the hydraulic state of the vertical jack and the slide jack, The control unit is configured to adjust the pressure on the jack pressure receiving surface of the vertical jack and the slide jack to a state close to the reaction force generated from the girder.First, operate the hydraulic pump to adjust the stroke of the slide jack. After pushing the girder out by extending it and bringing the girder received by the vertical jack into contact with the underside of the girder, then lowering the vertical jack and moving the slide jack supporting the girder with the horizontal jack, Bridge extrusion method characterized by sequentially repeating the process of transferring the support to the vertical jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5003591A JPH07109084B2 (en) | 1993-01-12 | 1993-01-12 | Bridge extrusion method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5003591A JPH07109084B2 (en) | 1993-01-12 | 1993-01-12 | Bridge extrusion method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06212607A JPH06212607A (en) | 1994-08-02 |
| JPH07109084B2 true JPH07109084B2 (en) | 1995-11-22 |
Family
ID=11561715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5003591A Expired - Fee Related JPH07109084B2 (en) | 1993-01-12 | 1993-01-12 | Bridge extrusion method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07109084B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103205934A (en) * | 2013-04-03 | 2013-07-17 | 同济大学 | Active supporting walking type pushing construction deivce |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4490311B2 (en) * | 2005-03-01 | 2010-06-23 | オリエンタル白石株式会社 | Girder laying method by double pulling method of split girder |
| JP4558558B2 (en) * | 2005-03-31 | 2010-10-06 | オリエンタル白石株式会社 | Bridge extrusion erection equipment |
| KR100986478B1 (en) * | 2008-05-21 | 2010-10-08 | 박윤수 | Self-launching apparatus for moving girders forwardly for incremental launching method |
| KR101114022B1 (en) * | 2009-08-19 | 2012-02-27 | 박정일 | equipment for transporting massive body |
| CN105908632B (en) * | 2016-05-28 | 2017-12-29 | 中交一公局第三工程有限公司 | The pre- inclined thrustor of beam body before one kind mixing girder stayed-cable bridge closure |
| CN106087747A (en) * | 2016-06-17 | 2016-11-09 | 柳州黔桥工程材料有限公司 | Stride incremental launching construction method for correcting error |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5836685A (en) * | 1981-08-31 | 1983-03-03 | ラサ工業株式会社 | Vibrating screen machine |
| JPS604322A (en) * | 1983-06-23 | 1985-01-10 | Fujitsu Ltd | Digital agc circuit |
-
1993
- 1993-01-12 JP JP5003591A patent/JPH07109084B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103205934A (en) * | 2013-04-03 | 2013-07-17 | 同济大学 | Active supporting walking type pushing construction deivce |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06212607A (en) | 1994-08-02 |
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