JP2645758B2 - Construction method of suspension bridge type pipe bridge - Google Patents

Construction method of suspension bridge type pipe bridge

Info

Publication number
JP2645758B2
JP2645758B2 JP4728890A JP4728890A JP2645758B2 JP 2645758 B2 JP2645758 B2 JP 2645758B2 JP 4728890 A JP4728890 A JP 4728890A JP 4728890 A JP4728890 A JP 4728890A JP 2645758 B2 JP2645758 B2 JP 2645758B2
Authority
JP
Japan
Prior art keywords
pipe
pipeline
temporary
cable
erection
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 - Lifetime
Application number
JP4728890A
Other languages
Japanese (ja)
Other versions
JPH03253602A (en
Inventor
豊 川井
浩 行友
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Steel Corp
Original Assignee
Kawasaki Steel Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP4728890A priority Critical patent/JP2645758B2/en
Publication of JPH03253602A publication Critical patent/JPH03253602A/en
Application granted granted Critical
Publication of JP2645758B2 publication Critical patent/JP2645758B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は、水道、ガス、石油等の輸送用管路のための
吊橋型式管路の架設工法に関する。
Description: TECHNICAL FIELD The present invention relates to a method of erection of a suspension bridge type pipeline for pipelines for transporting water, gas, oil and the like.

[従来の技術] 従来の吊橋型式管橋の架設工法は、特開昭60−88750
号公報に記載の如く、下記〜の順序で架設される。
[Prior art] A conventional suspension bridge type pipe bridge erection method is disclosed in Japanese Patent Application Laid-Open No. 60-88750.
As described in Japanese Patent Laid-Open Publication No. H10-260, the erection is performed in the following order.

両岸に設けた橋台上に主塔を設立し、両端を地上にア
ンカーした主ケーブルを主塔の上端を経由して張渡す。
The main tower will be set up on the abutments on both sides, and the main cable anchored at both ends to the ground will be stretched via the upper end of the main tower.

主塔間にケーブルクレーンを設置する。A cable crane will be installed between the main towers.

ケーブルクレーンによりトラス状の補剛桁を吊上げ、
この補剛桁をハンガーロープを介して主ケーブルに架設
する。
A truss-shaped stiffening girder is lifted by a cable crane,
This stiffening girder is installed on the main cable via a hanger rope.

上記の補剛桁の架設作業を、主ケーブルに対する重
量バランスの関係から、両岸側から均等に進める。
The above-mentioned stiffening girder erection work is performed evenly from both banks due to the weight balance of the main cable.

補剛桁の架設完了後、補剛桁上にて管路を組立て、溶
接する。
After completing the stiffening girder installation, assemble and weld the pipeline on the stiffening girder.

上記〜により、主ケーブルに吊下げたハンガーロ
ープにより補剛桁を支持し、この補剛桁上に管路を延設
せしめることにて、管橋を構成できることとなる。
According to the above, the stiffening girder is supported by the hanger rope suspended from the main cable, and the pipe is extended on the stiffening girder to form a pipe bridge.

[発明が解決しようとする課題] 然しながら、上記従来の架設工法にあっては、管橋全
体の鋼重に占める補鋼桁重量の割合が大きく、補剛桁の
製作と架設に要する工事量及び工事費の割合が多大であ
る。
[Problems to be Solved by the Invention] However, in the above-mentioned conventional erection method, the ratio of the weight of the reinforced girder to the steel weight of the entire pipe bridge is large, and the amount of work required for manufacturing and erection of the stiffened girder is small. The ratio of construction costs is large.

又、管路の組立、溶接が、狭く限られた補鋼桁の高所
上にて行なわれるため、架設作業性が悪く、高品質の管
橋架設に困難がある。
In addition, since the assembling and welding of the pipelines are performed at a high place of the narrow and limited steel girder, the workability of the construction is poor, and there is a difficulty in constructing a high quality pipe bridge.

尚、本出願人は、特願平1−196514により、補剛桁を
用いない吊橋型式管橋として、第10図に示す如く、橋台
1上の主塔2の間に管路3を架設するに際し、主塔2の
間に張渡される主ケーブル4、主ハンガーロープ5にて
該管路3の主として鉛直荷重を支持し、橋台1の間もし
くは主塔2の基部間等に張渡される耐風ケーブル6、耐
風ハンガーロープ7にて該管路3の主として水平荷重を
支持するように構成したものを提案している。そして、
この吊橋型式管橋は、耐風ケーブルに適度な初期張力を
与えることにより、水平、鉛直の剛性を増加し、管橋の
耐風安定性を確保することとしている。ところが、この
吊橋型式管橋にあっては、耐風ケーブルに未だ初期張力
が付与されない架設過程で、管橋の水平方向に全く剛性
のない状態となり、極めて不安定である。このため、架
設過程では、多数の仮ケーブルにて管路を水平、鉛直方
向に固定し、この仮ケーブルの設置、撤去を繰り返す必
要を生じ、施工の簡素化に困難を伴う。
In addition, according to Japanese Patent Application No. 1-196514, as a suspension bridge type pipe bridge that does not use a stiffening girder, as shown in FIG. At this time, the main cable 4 and the main hanger rope 5 stretched between the main towers 2 mainly support the vertical load of the pipeline 3, and the wind resistance stretched between the abutments 1 or the base of the main tower 2. It is proposed that the cable 6 and the windproof hanger rope 7 are configured to support mainly the horizontal load of the pipeline 3. And
This suspension bridge type pipe bridge is designed to increase the horizontal and vertical rigidity and secure the wind resistance of the pipe bridge by giving a suitable initial tension to the wind resistant cable. However, in the suspension bridge type pipe bridge, during the erection process in which the initial tension is not yet applied to the windproof cable, the pipe bridge has no rigidity in the horizontal direction at all, and is extremely unstable. For this reason, in the erection process, it is necessary to fix the pipeline in a horizontal and vertical direction with a large number of temporary cables, and to repeat the installation and removal of the temporary cables, which makes it difficult to simplify the construction.

本発明は、補剛桁を用いない吊橋型式管橋を架設する
に際し、足場設備と高所作業を大幅に削減し、架設作業
性を良好とし高品質の管橋を架設すると共に、施工の簡
素化を図ることを目的としている。
The present invention significantly reduces scaffolding equipment and work at heights when installing a suspension bridge type pipe bridge that does not use stiffening girders, improves the workability of work, improves the workability of construction, and simplifies construction. The purpose is to achieve the goal.

[課題を解決するための手段] 請求項1に記載の本発明は、橋台上の主塔間に管路を
架設するに際し、主塔間に張渡される主ケーブルにて該
管路の主として鉛直荷重を支持し、橋台間もしくは主塔
基部間等に張渡される耐風ケーブルにて該管路の主とし
て水平荷重を支持するように構成される吊橋型式管橋の
架設工法であって、該管路の架設に先立ち、管橋軸方向
に伸縮可能な多重筒状の仮設管を該管路の架設領域に先
進配置した後、当該仮設管内に該管路を送り込んで延設
せしめ、該管路の上記延設後に該仮設管を後退させつ
つ、該仮設管外に位置することとなる該管路を主ケーブ
ルと耐風ケーブルに懸架し、かつ該仮設管を撤去するよ
うにしたものである。
[Means for Solving the Problems] According to the present invention described in claim 1, when a pipeline is laid between main towers on an abutment, a main cable extending between the main towers is mainly vertically connected to the pipeline. A method of erection of a suspension bridge type pipe bridge which is configured to support a load and to mainly support a horizontal load of the pipeline by a windproof cable stretched between abutments or a base of a main tower, etc. Prior to the erection, a multi-tubular temporary pipe that can be extended and contracted in the axial direction of the pipe bridge is advancedly arranged in the erection area of the pipe, and then the pipe is fed into the temporary pipe to extend the pipe. After the temporary pipe is retracted after the extension, the pipe that is located outside the temporary pipe is suspended by the main cable and the windproof cable, and the temporary pipe is removed.

請求項2に記載の本発明は、前記仮設管が、該管路の
架設領域を挟む両岸から中央に向けて先進されて該中央
で連結され、該架設管は、当該仮設管内への該管路の延
設後、中央から両岸のそれぞれに向けて後退され、該仮
設管外に位置することとなる該管路は中央から両岸側に
向けて順次主ケーブルと耐風ケーブルに懸架されるよう
にしたものである。
In the present invention according to claim 2, the temporary pipe is advanced toward the center from both banks sandwiching the erection area of the pipeline and connected at the center, and the temporary pipe is inserted into the temporary pipe. After the pipeline is extended, the pipeline is retracted from the center toward each of the two banks, and the pipeline located outside the temporary pipe is suspended from the center toward the both banks by the main cable and the windproof cable sequentially. That's what I did.

[作用] 本発明によれば、仮設管を先進配置した後、当該仮設
管をガイドとしてその内部に管路を挿入延設し、該管路
の延設後に該仮設管を後退させつつ、該管路を主ケーブ
ルと耐風ケーブルに懸架することにより、補剛桁のない
吊橋型式管橋を構成できる。
According to the present invention, after the temporary pipe is advancedly arranged, a pipe is inserted and extended inside the temporary pipe using the temporary pipe as a guide, and after the temporary pipe is extended, the temporary pipe is retracted. By suspending the pipeline on the main cable and the windproof cable, a suspension bridge type bridge without stiffening girder can be constructed.

従って、請求項1に記載の本発明によれば、下記〜
の作用効果がある。
Therefore, according to the present invention described in claim 1, the following:
Has the effect.

管路自身を強度部材として利用することにより、補剛
桁を不要とすることができる。これにより、管橋全体の
鋼重を大幅に低減し、架設工事を簡素化できる。
By using the pipe itself as a strength member, a stiffening girder can be dispensed with. As a result, the steel weight of the entire pipe bridge can be significantly reduced, and the erection work can be simplified.

管路を広い地上にて組立て接合し、この管路を架設管
内に送り込んで延設することにて架設できる。これによ
り、足場設備と高所作業を大幅に削減できる。従って、
架設作業性を良好とし、高品質の管橋を架設できる。
The pipes can be assembled by joining and assembling the pipes on a large ground, and feeding and extending the pipes into the erection pipe. This can significantly reduce scaffolding equipment and work at height. Therefore,
The erection workability is good, and a high quality pipe bridge can be erected.

架設過程で管路をガイドする仮設管は、管橋軸方向に
伸縮でき、該管路の送り込み延設時には伸長設置されて
一定の剛性を備え、該管路の懸架時には順次収縮され撤
去される。従って、仮説管等の架設用部材の取扱いが単
純であり、施工を簡素化できる。
The temporary pipe that guides the pipeline during the erection process can be expanded and contracted in the axial direction of the pipeline, is extended and installed when the pipeline is fed and extended, and has a certain rigidity, and is sequentially contracted and removed when the pipeline is suspended. . Therefore, handling of the erection members such as hypothetical tubes is simple, and the construction can be simplified.

請求項2に記載の本発明によれば、下記の作用効果
がある。
According to the second aspect of the present invention, the following operation and effect can be obtained.

主ケーブルに対する管路の懸架を、中央から両岸側に
向けて順次進行せしめることとなり、主ケーブルに及ぶ
重量バランスを中央の両側間で均等化でき、施工性を向
上できる。
Suspension of the pipeline with respect to the main cable is made to progress sequentially from the center toward both banks, so that the weight balance over the main cable can be equalized between both sides of the center, and workability can be improved.

[実施例] 第1図〜第8図は架設工事の進展を示す模式図、第9
図は管橋の架設状態を示す正面図、第10図は管橋を示す
模式図である。
[Embodiment] FIGS. 1 to 8 are schematic views showing the progress of the erection work, FIG.
The figure is a front view showing the erection state of the pipe bridge, and FIG. 10 is a schematic view showing the pipe bridge.

本発明の架設工法の説明に先立ち、本発明の架設工法
によって架設される管橋の一例を、第8図、第9図に示
した吊橋型式管橋10を参照して説明する。
Prior to the description of the erection method of the present invention, an example of a pipe bridge erected by the erection method of the present invention will be described with reference to a suspension bridge type pipe bridge 10 shown in FIG. 8 and FIG.

吊橋型式管橋10は、第8図、第9図に示す如く構成さ
れ、両岸(及び必要により両岸の中間点等)に設けた橋
台11上の主塔12間に輸送用管路13を架設して構成される
ものである。この時、管橋10は、管路13の他に、主ケー
ブル14、耐風ケーブル15、主ハンガーロープ16、耐風ハ
ンガーロープ17を有して構成される。
The suspension bridge type pipe bridge 10 is constructed as shown in FIGS. 8 and 9, and has a transportation pipeline 13 between the main towers 12 on an abutment 11 provided on both banks (and an intermediate point between the two banks if necessary). Is constructed. At this time, the pipe bridge 10 is configured to include the main cable 14, the windproof cable 15, the main hanger rope 16, and the windproof hanger rope 17, in addition to the pipe 13.

主ケーブル14は、両岸の地上に設けたアンカーブロッ
クに両端をアンカーされる状態で、主塔12の上端部を経
由して管路13の直上部に張渡される。
The main cable 14 is stretched right above the pipe 13 via the upper end of the main tower 12 in a state where both ends are anchored by anchor blocks provided on the ground on both banks.

耐風ケーブル15は、両岸の橋台11間、もしくは主塔12
の基部間において、管路13の左右の両斜め下部に張渡さ
れる。
The windproof cable 15 is connected between the abutments 11 on both banks or the main tower 12
Between the bases of the pipes 13 is stretched to the lower left and right sides of the pipe 13.

即ち、主ケーブル14と耐風ケーブル15とが管路13まわ
りにて該管路13に沿う如くに延設され、該管路13が、主
ハンガーロープ16を介して主ケーブル14に懸架されると
ともに、耐風ハンガーロープ17を介して耐風ケーブル15
に懸架されるようになっている。尚、管路13の外周部に
は、主ハンガーロープ16、耐風ハンガーロープ17が連結
される管路支持枠20が装着されている。
That is, the main cable 14 and the windproof cable 15 are extended around the conduit 13 along the conduit 13, and the conduit 13 is suspended from the main cable 14 via the main hanger rope 16. Windproof cable 15 via windproof hanger rope 17
Is to be suspended. A pipeline support frame 20 to which the main hanger rope 16 and the windproof hanger rope 17 are connected is mounted on the outer peripheral portion of the pipeline 13.

これにより、管橋10にあっては、主ケーブル14が主ハ
ンガーロープ16を介して管路13を鉛直方向にて懸架し、
管路13の死荷重、水荷重(輸送物の荷重)等の鉛直荷重
を支持する。又、耐風ケーブル15が耐風ハンガーロープ
17を介して管路13を両斜め下方から懸架し、管路13に作
用する風力、地震力等の水平荷重を支持する。尚、耐風
ケーブル15に適度な初期張力を与えることにより、管橋
10の耐風安定性を確保できる。
Thereby, in the pipe bridge 10, the main cable 14 vertically suspends the pipe line 13 via the main hanger rope 16,
It supports vertical loads such as dead load and water load (load of transported goods) in the pipeline 13. In addition, windproof cable 15 is windproof hanger rope
The pipeline 13 is suspended from both diagonally lower sides via 17 to support horizontal loads such as wind force and seismic force acting on the pipeline 13. By applying an appropriate initial tension to the windproof cable 15,
10 wind stability can be secured.

然るに、上述の管橋10は、下記〜の如く、第1図
〜第8図に示される架設過程を経て架設される。
Therefore, the above-described pipe bridge 10 is installed through the installation process shown in FIGS. 1 to 8 as described below.

まず、下端にピン部21を有する主塔12を構築後、塔頂
を繋ぐ架設用ケーブル22を張渡した後、該架設用ケーブ
ル22に滑車を介して連結された架設用ハンガーロープ24
A〜24Cに一端を懸架され、両岸の地盤上に設置したロー
ラ支承25A、25Bに他端を支持された筒状の仮設管23A〜2
3Cを設置する(第1図参照)。
First, after constructing the main tower 12 having a pin portion 21 at the lower end, a construction cable 22 for connecting the tower top is stretched, and then a construction hanger rope 24 connected to the construction cable 22 via a pulley.
A cylindrical temporary pipe 23A-2 suspended at one end from A to 24C and supported at the other end by roller bearings 25A and 25B installed on the ground on both banks
Install 3C (see Fig. 1).

仮設管23A〜23Cの断面形状は、必ずしも閉断面である
必要はなく、又、円形、三角形、矩形、多角形等の任意
の形状で良いが、管軸方向に伸縮可能となるよう多重筒
状であることが必要で例えば多重円筒形状等が好適であ
る。
The cross-sectional shape of the temporary pipes 23A to 23C does not necessarily need to be a closed cross-section, and may be any shape such as a circle, a triangle, a rectangle, and a polygon. And a multi-cylindrical shape, for example, is suitable.

尚、上述の多重筒状仮設管23A〜23Cは、管路13のガイ
ド管として使用されるが、架設過程で管路13の重量の一
部を仮設用ハンガーロープ24A〜24Cを介して該架設用ケ
ーブル22に伝達する必要があるため、仮設用ハンガーロ
ープ24A〜24Cの取付部のみ強固な構造とする必要があ
る。次に、架設用ケーブル22上の滑車を利用し、上述の
多重筒状仮設管23A〜23Cを両岸の主塔12側より同時に架
設領域中央に向けて引き出す(第2図参照)。
Note that the above-mentioned multiple tubular temporary pipes 23A to 23C are used as guide pipes for the pipeline 13, but a part of the weight of the pipeline 13 is provided via the temporary hanger ropes 24A to 24C during the installation process. Therefore, it is necessary that only the mounting portions of the temporary hanger ropes 24A to 24C have a strong structure. Next, using the pulley on the erection cable 22, the above-mentioned multiple tubular temporary pipes 23A to 23C are simultaneously pulled out from the main tower 12 side on both banks toward the center of the erection area (see FIG. 2).

仮設管23A〜23Cが架設領域中央にて閉合後、直ちにそ
れら仮設管23A〜23Cの先端に取付けてあるフランジ継手
26をボルト等にて緊結し、一体化する(第3図参照)。
Immediately after the temporary pipes 23A to 23C are closed at the center of the erection area, a flange joint attached to the tips of the temporary pipes 23A to 23C
Tighten 26 with bolts etc. to integrate (see Fig. 3).

仮設管23A〜23Cが架設領域の全長に渡り架設用ケーブ
ル22に懸架された後、仮設管23A〜23Cの上面に作業足場
及び手摺27を組立てると共に、いずれかの主塔12側から
管路13を仮設管23A〜23C内に挿入し、仮設管23A〜23Cの
端部の地上に設置した溶接用の管支持台28上において、
該管路13の円周溶接継手29を施し、溶接終了後の管路13
を順次架設領域中央方向へ送り出す(第4図参照)。
After the temporary pipes 23A to 23C are suspended by the erection cable 22 over the entire length of the erection area, a work scaffold and a handrail 27 are assembled on the upper surfaces of the temporary pipes 23A to 23C, and the pipe 13 Into the temporary pipes 23A to 23C, and on the welding pipe support 28 installed on the ground at the ends of the temporary pipes 23A to 23C,
Circumferential welding joint 29 is applied to the pipe 13 and the pipe 13 after welding is completed.
Are sequentially sent out toward the center of the erection area (see FIG. 4).

上記管路13の溶接、送り出しの作業を繰り返すことに
より、該管路13を一方の主塔12の側から他方の主塔12の
側まで仮設管23A〜23Cの内部を貫通して延設せしめる。
By repeating the welding and feeding operations of the pipe 13, the pipe 13 is extended from the side of one main tower 12 to the side of the other main tower 12 through the interior of the temporary pipes 23A to 23C. .

尚、管路13を送り出す前、或いは送り出し中に、仮設
管23A〜23Cの水平方向の変位を拘束するため、耐風ケー
ブル15を張渡し、仮設管23A〜23Cを耐風ハンガーロープ
17にて懸架する。又、これと併行して、主ケーブル14を
両岸の主塔12の間に張渡し、主ハンガーロープ16を吊下
げておく(第5図参照)。
Before or during the delivery of the pipeline 13, the windproof cable 15 is stretched to restrain the horizontal displacement of the temporary pipes 23A to 23C, and the temporary pipes 23A to 23C are connected to the windproof hanger rope.
Hang at 17. At the same time, the main cable 14 is stretched between the main towers 12 on both banks, and the main hanger rope 16 is suspended (see FIG. 5).

次に、仮設管23A〜23Cを架設領域中央部より主塔12の
側へ引き戻しながら、管路13に管路支持枠20(第9図参
照)を取付けつつ、主ハンガーロープ16にて懸架し、ロ
ープ張力を調整することにより、管路13の重量を主ケー
ブル14に支持させていく。又同時に、管路13を耐風ハン
ガーロープ17を介し耐風ケーブル15に緊結する(第6図
参照)。
Next, the temporary pipes 23A to 23C are suspended by the main hanger rope 16 while the pipe support frame 20 (see FIG. 9) is attached to the pipe 13 while being pulled back from the center of the erection area toward the main tower 12. By adjusting the rope tension, the weight of the conduit 13 is supported by the main cable 14. At the same time, the pipe 13 is connected to the windproof cable 15 via the windproof hanger rope 17 (see FIG. 6).

上記一連の作業を繰り返すことにより、両岸の主塔12
の間に延設される管路13を全て主ハンガーロープ16を介
して主ケーブル14に支持し、耐風ハンガーロープ17を介
して耐風ケーブル15に支持する(第7図参照)。
By repeating the above series of operations, the main tower 12
The pipes 13 extending between them are all supported on the main cable 14 via the main hanger rope 16 and supported on the windproof cable 15 via the windproof hanger rope 17 (see FIG. 7).

耐風ケーブル15の張力、及び主ハンガーロープ16の張
力を調整終了した後、仮設管23A〜23C、架設用ケーブル
22等の架設用部材を撤去し、管路13の架設を終了する
(第8図参照)。
After adjusting the tension of the windproof cable 15 and the tension of the main hanger rope 16, the temporary pipes 23A to 23C,
The erection members such as 22 are removed, and the erection of the pipeline 13 is completed (see FIG. 8).

次に、上記実施例の作用について説明する。 Next, the operation of the above embodiment will be described.

管路13自身を強度部材として利用することにより、補
剛桁を不要とすることができる。これにより、管橋10全
体の剛重を大幅に低減し、架設工事を簡素化できる。
By using the pipe 13 itself as a strength member, a stiffening girder can be dispensed with. As a result, the rigidity of the entire pipe bridge 10 can be significantly reduced, and the erection work can be simplified.

管路13を広い地上に組立て接合し、この管路13を仮設
管23A〜23C内に送り込んで延設することにて架設でき
る。これにより、足場設備と高所作業を大幅に削減でき
る。従って、架設作業性を良好とし、高品質の管橋10を
架設できる。
The pipe 13 can be assembled and joined on a large ground, and the pipe 13 can be sent into the temporary pipes 23A to 23C and extended to be installed. This can significantly reduce scaffolding equipment and work at height. Therefore, the erection workability is improved, and a high-quality pipe bridge 10 can be erected.

尚、管路13の溶接を地上にて行なえるため、予め長尺
の管路13を容易する必要がなくなり、管路13の架設地点
が狭隘な山間部であっても施工容易である。
In addition, since the pipe 13 can be welded on the ground, it is not necessary to easily make the long pipe 13 in advance, so that the pipe 13 can be easily installed even in a narrow mountain area.

架設過程で管路13をガイドする架設管23A〜23Cは、管
橋軸方向に伸縮でき、該管路13の送り込み延設時には伸
長設置されて一定の剛性を備え、該管路13の懸架時には
順次収縮され撤去される。従って、仮設管23A〜23C等の
架設用部材の取扱いが単純であり、施工を簡素化でき
る。
The erection pipes 23A to 23C that guide the pipeline 13 during the erection process can be expanded and contracted in the pipe bridge axial direction, and are provided with a certain rigidity by being extended when the pipeline 13 is fed and extended, and when the pipeline 13 is suspended. It is contracted and removed sequentially. Therefore, handling of the erection members such as the temporary pipes 23A to 23C is simple, and the construction can be simplified.

主ケーブル14に対する管路13の懸架を、中央から両岸
側に向けて順次進行せしめることとなり、主ケーブル14
に及ぶ重量バランスを中央の両側管で均等化でき、施工
性を向上できる。
Suspension of the conduit 13 with respect to the main cable 14 is made to proceed sequentially from the center to both banks, and the main cable 14
Weight balance can be equalized by the two pipes in the center, and the workability can be improved.

[発明の効果] 以上のように本発明によれば、補剛桁を用いない吊橋
型式管橋を架設するに際し、足場設備と高所作業を大幅
に削減し、架設作業性を良好とし高品質の管橋を架設す
ると共に、施工の簡素化を図ることができる。
[Effects of the Invention] As described above, according to the present invention, when erection of a suspension bridge type pipe bridge that does not use a stiffening girder, scaffolding equipment and work at heights are significantly reduced, erection workability is improved, and high quality is achieved. In addition to erection of the bridge, the construction can be simplified.

【図面の簡単な説明】[Brief description of the drawings]

第1図〜第8図を架設工事の進展を示す模式図、第9図
は管橋の架設状態を示す正面図、第10図は管橋を示す模
式図である。 10……管橋、 11……橋台、 12……主塔、 13……管路、 14……主ケーブル、 15……耐風ケーブル、 23A〜23C……仮設管。
1 to 8 are schematic views showing the progress of the erection work, FIG. 9 is a front view showing the erection state of the pipe bridge, and FIG. 10 is a schematic view showing the pipe bridge. 10… Pipe bridge, 11… Abutment, 12… Main tower, 13… Pipe line, 14… Main cable, 15… Wind-resistant cable, 23A-23C …… Temporary pipe.

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】橋台上の主塔間に管路を架設するに際し、
主塔間に張渡される主ケーブルにて該管路の主として鉛
直荷重を支持し、橋台間もしくは主塔基部間等に張渡さ
れる耐風ケーブルにて該管路の主として水平荷電を支持
するように構成される吊橋型式管橋の架設工法であっ
て、該管路の架設に先立ち、管橋軸方向に伸縮可能な多
重筒状の仮設管を該管路の架設領域に先進配置した後、
当該仮設管内に該管路を送り込んで延設せしめ、該管路
の上記延設後に該仮設管を後退させつつ、該仮設管外に
位置することとなる該管路を主ケーブルと耐風ケーブル
に懸架し、かつ該仮設管を撤去する吊橋型式管橋の架設
工法。
1. When laying a pipeline between main towers on an abutment,
The main cable spanning between the main towers supports mainly vertical load of the pipeline, and the windproof cable spanning between abutments or the base of the main tower supports mainly horizontal charging of the pipeline. It is a method of erection of a suspension bridge type pipe bridge to be constructed, wherein prior to erection of the pipeline, after a multi-tubular temporary pipe that can be extended and contracted in the axial direction of the pipe bridge is advancedly arranged in the erection area of the pipeline,
The pipe is fed into the temporary pipe and extended, and after the pipe is extended, the temporary pipe is retracted, and the pipe located outside the temporary pipe is connected to the main cable and the windproof cable. A suspension bridge type pipe bridge construction method for suspending and removing the temporary pipe.
【請求項2】前記仮設管が、該管路の架設領域を挟む両
岸から中央に向けて先進されて該中央で連結され、該仮
設管は、当該仮設管内への該管路の延設後、中央から両
岸のそれぞれに向けて後退され、該仮設管外に位置する
こととなる該管路は中央から両岸側に向けて順次主ケー
ブルと耐風ケーブルに懸架される請求項1記載の吊橋型
式管橋の架設工法。
2. The temporary pipe is advanced from both banks sandwiching the erection area of the pipe to the center and connected at the center, and the temporary pipe is extended into the temporary pipe. 2. The pipeline which is retracted from the center toward each of the two banks, and which is located outside the temporary pipe, is sequentially suspended from the center toward the both banks by the main cable and the windproof cable. Construction method of suspension bridge type pipe bridge of Japan.
JP4728890A 1990-03-01 1990-03-01 Construction method of suspension bridge type pipe bridge Expired - Lifetime JP2645758B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4728890A JP2645758B2 (en) 1990-03-01 1990-03-01 Construction method of suspension bridge type pipe bridge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4728890A JP2645758B2 (en) 1990-03-01 1990-03-01 Construction method of suspension bridge type pipe bridge

Publications (2)

Publication Number Publication Date
JPH03253602A JPH03253602A (en) 1991-11-12
JP2645758B2 true JP2645758B2 (en) 1997-08-25

Family

ID=12771102

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4728890A Expired - Lifetime JP2645758B2 (en) 1990-03-01 1990-03-01 Construction method of suspension bridge type pipe bridge

Country Status (1)

Country Link
JP (1) JP2645758B2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3751366B2 (en) * 1996-06-21 2006-03-01 川鉄橋梁鉄構株式会社 Steel pipe erection method for suspension bridge type pipe bridge
JP6329830B2 (en) * 2014-07-15 2018-05-23 日鉄住金パイプライン&エンジニアリング株式会社 Piping unit for water pipe bridge, water pipe bridge, and method for installing water pipe bridge
CN107100077B (en) * 2017-03-29 2019-01-22 中建钢构有限公司 A kind of spacial special-shaped steel arch tower construction method
CN111648225A (en) * 2019-11-25 2020-09-11 泰富重工制造有限公司 Method for mounting circular tube conveyor between mountain tops
CN114232504B (en) * 2022-01-24 2023-06-20 岳西县彩虹瀑布旅游有限公司 Construction method of glass trestle in scenic spot

Also Published As

Publication number Publication date
JPH03253602A (en) 1991-11-12

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