JP3905099B2

JP3905099B2 - Hand girder delivery construction method for bridge girder

Info

Publication number: JP3905099B2
Application number: JP2004204187A
Authority: JP
Inventors: 義彦水上; 賀津雄大垣; 江杉浦; 聡梅田; 善彦上野; 真介黒木; 裕吉村
Original assignee: Kawasaki Jukogyo KK
Current assignee: Kawasaki Motors Ltd
Priority date: 2004-07-12
Filing date: 2004-07-12
Publication date: 2007-04-18
Anticipated expiration: 2024-07-12
Also published as: JP2006028733A

Description

本発明は、橋桁の架設工法の一種で、架設する橋桁下に道路、鉄道、河川などがあり、ベントを設置できなかったりトラッククレーンの乗り入れが困難であったりする場所で橋桁を架設するのに好適な、手延べ式送り出し架設工法に関する。なお、本発明に係る送り出し架設工法には、橋桁を自走台車や水平ジャッキなどで前方へ押し出すように送り出す場合のほか、橋桁を載置した移動ベントの台車をワイヤを介してウインチで引っ張ったり、橋桁の先端をワイヤを介してウインチで引っ張ったりする、引き出し架設工法も含まれるものとする。 The present invention is a kind of bridge girder construction method, and there are roads, railways, rivers, etc. under the bridge girder to be built, and it is necessary to construct a bridge girder in a place where it is difficult to install a vent or to enter a truck crane. The present invention relates to a hand-drawn delivery construction method. In addition, in the delivery construction method according to the present invention, in addition to sending out the bridge girder by pushing it forward with a self-propelled carriage or horizontal jack, the carriage of the moving vent on which the bridge girder is placed is pulled with a winch through a wire. In addition, a pulling construction method in which the tip of the bridge girder is pulled with a winch through a wire is also included.

この種の工法は、交差点の立体交差化工事などで、例えば工事による道路交通への影響を最小限にする必要がある場合に、交差点部の橋桁架設に多く採用されている。 This type of construction method is often used for bridge girder construction at intersections, for example, when it is necessary to minimize the impact on road traffic due to construction of intersections at intersections.

従来の手延べ式送り出し工法は、図６に示すように、橋桁１を架設する予定場所に道路や河川Ｙなどを挟んであらかじめ橋脚（または橋台）７・８を立設したのち、両側の各７・８橋脚までは所定間隔で立設した複数の橋脚に跨って直列に連結した複数連の橋桁（部材）を設置する。橋脚間には、一定間隔で固定ベント１２を設置して橋桁を補助的に支持する。 As shown in FIG. 6, the conventional hand-drawn delivery method is constructed in such a way that bridge piers (or abutments) 7 and 8 are erected in advance on the planned location where the bridge girder 1 is to be installed with the road Y or river Y sandwiched between them. Up to 7.8 piers, a plurality of bridge girders (members) connected in series across a plurality of piers standing at predetermined intervals are installed. Between the piers, fixed vents 12 are installed at regular intervals to support the bridge girder in an auxiliary manner.

橋桁１を送り出す側の既設の橋桁１７上には送り出し設備１８を設置し、架設する橋脚７・８間の距離に相当する長さに直列に連結した複数連の橋桁（部材）１を、所定の距離をあけて配置した一対の台車１５・１６上に載置する。先頭の橋桁（部材）１の先端垂直面には、手延べ機５の基端垂直面を連結構４および継手部材６を介して連結し前方延長線上に張り出させている。そして、架設予定の橋桁（以下、架設用橋桁ともいう）１を対向する橋脚８側へ送り出し、手延べ機５が対向側の既設橋桁９に到達したら、手延べ機５下にころを介装して両端支持の状態で橋桁を送り出す。両側の橋脚間に架設用橋桁が跨って配置された状態で、先端の手延べ機５を連結構４とともに撤去する。それから、架設用橋桁１の両側にジャッキ（図示せず）を配備し、架設用橋桁１を既設橋桁９と同じ高さまで降下させ、既設橋桁９に架設用橋桁１の両側を連結する。最後に、送り出し設備１８や固定ベント１２を撤去すれば、架設工事が終了する。 On the existing bridge girder 17 on the side where the bridge girder 1 is to be delivered, a delivery facility 18 is installed, and a plurality of bridge girder (members) 1 connected in series to a length corresponding to the distance between the bridge piers 7 and 8 are predetermined. It mounts on a pair of trolley | bogies 15 and 16 arrange | positioned at a distance. A base end vertical surface of the hand spreader 5 is connected to a front end vertical surface of the leading bridge girder (member) 1 via a connecting structure 4 and a joint member 6 so as to project on a front extension line. Then, the bridge girder to be erected (hereinafter also referred to as erection bridge girder) 1 is sent out to the opposite pier 8 side, and when the handbill 5 reaches the existing bridge girder 9 on the opposite side, rollers are installed under the handbill 5. Then, the bridge girder is sent out with both ends supported. With the bridge girder installed between the bridge piers on both sides, the leading hand extender 5 is removed together with the connecting structure 4. Then, jacks (not shown) are provided on both sides of the erection bridge girder 1, the erection bridge girder 1 is lowered to the same height as the existing bridge girder 9, and both sides of the erection bridge girder 1 are connected. Finally, if the delivery equipment 18 and the fixed vent 12 are removed, the construction work is completed.

その他の先行技術に、立設された橋脚よりも幅広でその上面側に回転ローラを備えた仮設桁を少なくとも橋脚の架設方向の３箇所に設置し、橋脚または仮設桁を吊り上げ移動させる吊り上げ装置を備えたガータを回転ローラ上に載置し、前記橋脚間に前記吊り上げ装置により前記橋桁を架設する工程と、最後方の前記仮設桁を前記吊り上げ装置で吊り上げて前記ガータを架設方向に移動する工程と、吊り上げた前記仮設桁を架設方向の次の橋脚上に設置する工程とを順次繰り返す橋桁の架設工法が提案されている（例えば、特許文献１参照）。
特公平３−７８８８８号公報（発明の詳細な説明および第１図〜第３図） In another prior art, there is a lifting device that installs temporary girders that are wider than standing piers and have rotating rollers on the upper surface thereof at least at three locations in the pier erection direction, and lifts and moves the piers or temporary girders. Placing the provided garter on a rotating roller, laying the bridge girder with the lifting device between the piers, and lifting the last temporary girder with the lifting device and moving the garter in the erection direction There has been proposed a bridge girder construction method in which the suspended temporary girder is sequentially installed on the next pier in the erection direction (see, for example, Patent Document 1).
Japanese Patent Publication No. 3-78888 (Detailed Description of the Invention and FIGS. 1 to 3)

しかしながら、上記した従来の手延べ式送り出し架設工法および上記公報に記載の橋脚の架設工法では、以下のような点で解決すべき課題がある。 However, the conventional hand-drawn delivery construction method and the bridge pier construction method described in the above publication have the following problems to be solved.

1) 従来の架設工法は、図７に示すように手延べ機５を橋桁１先端の垂直面に延長線上
に前方へ張り出して設けていたので、架設予定の橋桁１の受け側（到達側）に位置する既設橋桁９（または橋台８）に対して、少なくとも橋桁１の高さ分を降下する作業が必要であった。この降下作業はジャッキ等を用いて行うが、落下等の危険を伴うおそれがあるため、例えば架設予定の橋桁１下に道路がある交差点上での架設の場合には、交通規制を行わねばならない。しかも、橋桁１の降下作業の前には、手延べ機５を撤去しておかねばならないが、この時点では、架設すべき橋桁１は既設橋桁９に対し段差（図６参照）があるため、すぐに連結することが困難である。このため、通常は手延べ機５を撤去したのちに橋桁１を降下させている。また、手延べ機５の撤去は橋桁１が連結されていない不安定な状態で行われるために危険が伴い作業に熟練を要する。さらに、橋桁１の降下作業の他、本来の橋桁１を手延べ機５とともに送り出す作業の際にも交差点上で架設する場合には交通規制を行う必要があり、この作業は上記作業の前に行うことになるので、日数をあけて交通規制が２回行われることになる。 1) In the conventional construction method, as shown in Fig. 7, the hand spreader 5 is provided on the vertical surface of the end of the bridge girder 1 so as to project forward on the extension line, so that the receiving side (reach side) of the bridge girder 1 to be erected It was necessary to lower at least the height of the bridge girder 1 with respect to the existing bridge girder 9 (or the abutment 8) located at. This descent work is done using a jack etc., but there is a risk of falling, etc., so for example, in the case of erection at the intersection where there is a road under the bridge girder 1 to be erected, traffic regulation must be performed . Moreover, the handrail 5 must be removed before the bridge girder 1 is lowered. At this point, the bridge girder 1 to be installed has a step (see FIG. 6) with respect to the existing bridge girder 9. It is difficult to connect immediately. For this reason, the bridge girder 1 is usually lowered after the handrail 5 is removed. Further, the removal of the handbill 5 is performed in an unstable state in which the bridge girder 1 is not connected, which is dangerous and requires skill in the work. Furthermore, in addition to the work of lowering the bridge girder 1, it is necessary to regulate traffic when installing the bridge girder 1 together with the spreader 5 on the intersection, and this work must be performed before the above work. Because it will be done, the traffic regulation will be done twice after a few days.

2) 上記公報に記載の工法では、ガーターを既設の橋桁上で移動させるため、実施可能な道路の幅や河川の幅などに制限があり、例えば交差点の幅が広い（架設間距離が長い）場合には実施が困難である。 2) In the construction method described in the above publication, since the garter is moved on the existing bridge girder, there are restrictions on the width of roads and rivers that can be implemented, for example, the width of the intersection is wide (the distance between the erections is long) In some cases, implementation is difficult.

本発明は上述の点に鑑みなされたもので、架設地点の橋桁下に道路、鉄道、河川などがあって支保工を設置したりクレーンを乗り入れたりするのが困難な地点での架設作業に適用でき、橋桁送り出し後の橋桁の降下作業を省略でき、特に交差点上の架設作業において橋桁下の交通規制時間を大幅に短縮できる橋桁の手延べ式送り出し架設工法を提供しようとするものである。 The present invention has been made in view of the above points, and is applied to a construction work where there is a road, a railway, a river, etc. under the bridge girder of the construction point and it is difficult to install a support work or to enter a crane. It is possible to eliminate the work of descending the bridge girder after sending out the bridge girder, and to provide a bridge girder delivery construction method that can significantly reduce the traffic regulation time under the bridge girder, especially in the construction work at the intersection.

上記の目的を達成するために本発明に係る橋桁の手延べ式送り出し架設工法は、a)橋桁の架設予定地点を挟んで相対向する橋脚を立設し、前記一対の橋脚のうち一方の橋脚側に橋脚より後方にかけて間隔をあけて支保工または橋脚を立設し、それらの支保工上または橋脚上に跨って一定長の橋桁（部材）を後方へ直列に連結して設置し、他方の橋脚側から新たに架設する橋桁を先頭に手延べ機を連結して送り出し、前記一対の橋脚間に橋桁を架設する橋桁の手延べ式送り出し架設工法において、b)先頭の橋桁の先端部において両側の腹板上に仕口をそれぞれ連接して上方へ延設し、両側の仕口上に連結構の両側板下端部を継手部材にて連結し、該連結構の先端両側垂直縁に前記手延べ機の基端両側垂直縁を突き合わせ状態で継手部材にて連結し、前記連結構を介して先頭の前記橋桁先端上部より手延べ機を前方へ張り出させ、新しい橋桁を送り出す側の前記橋脚より後方にわたり間隔をあけて支保工または橋脚を立設し、それらの支保工上または橋脚上に跨って一定長の橋桁を後方へ順次直列に連結するとともに、c)一連に連結した前記橋桁を前記支保工上または前記橋脚上に直接または間接的に設置した台車、ころ、ローラー、ノンフリクションプレートなどで移動可能に支持して前方へ送り出し、前記手延べ機を備えた先頭の橋桁が反対側の橋脚上の既設橋桁に到達した状態で、両方の橋桁垂直面を突き合わせて連結したのち、d)前記先頭の橋桁から手延べ機を撤去するか、
あるいは請求項２に記載のように、1)橋桁の架設予定地点を挟んで相対向する橋脚を立設し、2)前記一対の橋脚のうち橋桁を送り出す側の橋脚より後方にわたり間隔をあけて支保工または橋脚を立設し、3)それらの支保工上または橋脚上に跨って軌条設備（軌条設備は送り出し設備の一例）を設置したのち、該軌条設備上で架設予定の一定長の橋桁（部材）を後方へ順次直列に連結するとともに、先頭の橋桁の先端部において両側の腹板上に仕口をそれぞれ連接して上方へ延設し、両側の仕口上に連結構の両側板下端部を継手部材にて連結し、該連結構の先端両側垂直縁に前記手延べ機の基端両側垂直縁を突き合わせ状態で継手部材にて連結し、前記連結構を介して先頭の前記橋桁先端上部より手延べ機を前方へ張り出させる一方、4)橋桁の架設予定地点を挟んで反対側の橋脚より後方にかけて間隔をあけて支保工または橋脚を立設し、それらの支保工上または橋脚上に跨って一定長の橋桁（部材）を後方へ直列に連結して設置し、5)前記軌条設備を走行可能な台車を介して前記橋桁を前方へ送り出し、前記手延べ機を備えた先頭の橋桁が反対側の橋脚上の既設橋桁に到達した状態で、両方の橋桁垂直面を突き合わせて連結したのち、6)前記先頭の橋桁から手延べ機を撤去するか、することを特徴とするものである。
In order to achieve the above object, the hand girder delivery construction method for a bridge girder according to the present invention includes: a) standing a bridge pier facing each other across a planned construction point of the bridge girder, and one of the pair of piers. Supports or piers are erected on the side of the bridge pier behind the pier, and a fixed-length bridge girder (member) is installed in series on the support or over the pier. delivery by connecting a hand total machine top girder to be newly laid from pier side, the hand total formula feeding erection method of bridge beam which spans the bridge girder between the pair of piers, b) on both sides at the tip of the head of the bridge girder The joints are respectively connected to the abdominal plate and extended upward, and the lower ends of both side plates of the connecting structure are connected to the joints on both sides by a joint member, and the above-mentioned hands are extended to the vertical edges on both ends of the connecting structure. Connect the vertical edges on both sides of the base end of the machine with a joint member in a butted state. , Projecting the hand extender forward from the top of the leading end of the bridge girder through the connecting structure, and standing up a support or bridge pier with a gap extending backward from the pier on the side where a new bridge girder is sent out. The bridge girder of a certain length is connected in series to the rear side over the support or the bridge pier, and c) a carriage in which the bridge girder connected in series is directly or indirectly installed on the support or the pier, Rollers, rollers, non-friction plates, etc. are supported so that they can move forward, and the front bridge girder equipped with the above-mentioned handrailing machine reaches the existing bridge girder on the opposite pier, so that both bridge girder vertical surfaces are D) Remove the handrail from the top bridge girder,
Alternatively, as described in claim 2, 1) erected piers facing each other across the planned construction point of the bridge girder, and 2) spaced apart from the pier on the side where the bridge girder is sent out of the pair of piers. Supports or bridge piers are erected. 3) After installing rail facilities (rail facilities are examples of sending out facilities) over those supports or bridge piers, a fixed-length bridge girder will be built on the rail facilities. (Members) are sequentially connected in series rearward, and at the tip of the leading bridge girder, joints are respectively connected to the abdominal plates on both sides and extended upward, and the lower ends of both side plates of the coupling structure on the joints on both sides. The joint is connected by a joint member, and the vertical edges on both sides of the connecting structure are connected to the vertical edges on both sides by the joint member in a butted state, and the leading end of the leading bridge girder via the connection structure. while Ru allowed overhang hand caster forward than the upper, 4) girders rack of Supporters or piers are erected at intervals from the opposite pier across the planned point, and a fixed-length bridge girder (member) is connected in series across the supporter or pier. 5) Sending out the bridge girder forward via a carriage capable of traveling the rail equipment, both in the state where the leading bridge girder with the handrail reached the existing bridge girder on the opposite pier After the vertical surfaces of the bridge girders are butted and connected, 6) the handrail machine is removed from the leading bridge girder.

上記の構成からなる本発明（請求項１または請求項２）の橋桁の手延べ式送り出し架設工法によれば、手延べ機が先頭の橋桁の上側に設けられているので、橋桁を架設完成時と同じ高さで送り出すことができ、送り出し後の橋桁の降下作業が不要になる。また、橋桁の降下作業前に手延べ機を撤去しなければならないが、本発明の架設工法では、架設予定の橋桁とこれを連結する既設橋桁とに高さの差（段差）がなく、また手延べ機は橋桁の上側に連結されているので、手延べ機を撤去せずに両方の橋桁を突き合わせて連結できる。したがって、特に交差点上での架設作業に際して、交通規制は橋桁の送り出し時のみに行えばよいから、交通障害を最小限な１回だけにすることができるとともに、交通規制時間も大幅に短縮することができる。さらに、一定長の橋桁（部材）を橋桁が送り出されるたびに後端に順次連結しながら送り出すので、橋桁の先端が反対側の既設橋桁に到達するまでに、多数連の橋桁（部材）を連結して長尺の橋桁を形成できるので、連結作業が効率よく行える。さらにまた、手延べ機は先頭の橋桁の先端部上に連結構を載置して連結したうえで、その連結構の先端垂直面に前方へ張り出して連結するので、手延べ機を撤去する際に連結構ごと取り外して撤去したり、先に連結構の先端から手延べ機を取り外してから連結構を橋桁から撤去したり、作業の状況に応じて撤去の仕方を選択でき、また連結構は手延べ機の長さに拘わらず繰り返し使用することができ経済的である。
According to the bridge girder manual delivery construction method of the present invention (Claim 1 or Claim 2) having the above-described configuration, the bridge girder is provided above the first bridge girder. Can be sent out at the same height, and the work of lowering the bridge girder after sending out becomes unnecessary. In addition, it is necessary to remove the handrail before the bridge girder is lowered. However, according to the construction method of the present invention, there is no difference in height (step) between the bridge girder to be installed and the existing bridge girder connecting the bridge girder. Since the handrail is connected to the upper side of the bridge girder, both bridge girders can be abutted and connected without removing the handrail. Therefore, traffic control only needs to be performed when the bridge girder is sent out, especially during the construction work at the intersection, so that traffic troubles can be minimized and traffic control time can be greatly shortened. Can do. In addition, a bridge girder (member) of a certain length is sent out while being sequentially connected to the rear end each time the bridge girder is sent out. Since a long bridge girder can be formed, connection work can be performed efficiently. Furthermore, the handrailer is connected by placing a connecting structure on the leading edge of the leading bridge girder, and then projecting forward on the vertical surface of the connecting structure so that it can be removed. The connection structure can be removed and removed, or the connection mechanism can be removed from the bridge girder after removing the handrail from the tip of the connection structure, and the removal method can be selected according to the work situation. It is economical because it can be used repeatedly regardless of the length of the handrail.

請求項３に記載のように、前記橋桁を送り出す側の先頭の前記橋脚より後方に間隔をあけて立設した前記橋脚上に門構を立設し、該門構の上端水平部下に一対のアップリフト止めローラーを下向けに吊設し、架設予定の前記橋桁の後方へ直列に連結した橋桁の後部側を前記アップリフト止めローラーに当接させて支持することができる。
The gate structure is erected on the pier that is erected with a space behind the leading pier on the side where the bridge girder is sent out as defined in claim 3, An uplift stop roller can be suspended downward, and the rear side of the bridge girder connected in series to the rear of the bridge girder to be installed can be brought into contact with and supported by the uplift stop roller .

請求項３記載の橋桁の手延べ式送り出し架設工法によれば、架設予定の連結した前記橋桁の後部側を前記アップリフト止めローラーに当接させて支持して橋桁の後部側がアップリフトするのを防止したから、送り出す側の橋桁の後方に広いスペースがなく、橋桁を十分に長く連結できない場合にも有効である。
According to the handed-out delivery construction method of the bridge girder according to claim 3, the rear side of the bridge girder that is to be erected is brought into contact with and supported by the uplift stop roller, and the rear side of the bridge girder is lifted up. This is also effective when there is no wide space behind the sending-out bridge girder and the bridge girder cannot be connected long enough.

本発明に係る橋桁の手延べ式送り出し架設工法は、架設予定の先頭橋桁の先端上部に連結構を介して手延べ機の基端部を連結して手延べ機を前方へ張り出させた状態で、架設地
点を挟んで反対側の橋脚上へ送り出すので、橋桁を架設完了状態と同じ高さで送り出せ、送り出し後の橋桁の降下作業が不要になる。また、手延べ機の撤去を橋桁の送り出し作業の後でゆっくりと行えるので、撤去作業が容易になる上に、架設作業時間（日数）が大幅に短縮されるとともに、特に交差点上での作業にあっては交通規制は橋桁の送り出し時にだけ行えばよく、従来の送り出し架設工法に比べて交通規制時間が極めて短くなる。
The handrail-type delivery construction method of the bridge girder according to the present invention is a state in which the handrail is extended forward by connecting the base end portion of the handrail through the connecting structure to the upper end of the top bridge girder to be erected. Therefore, the bridge girder is sent out on the opposite pier with the installation point in between, so that the bridge girder can be sent out at the same height as the installation completion state, and the descent work of the bridge girder after sending out becomes unnecessary. In addition, the removal of the handrail can be performed slowly after the bridge girder is sent out, so that the removal work becomes easier and the construction work time (days) is greatly shortened. In that case, the traffic regulation only needs to be performed at the time of sending out the bridge girder, and the traffic regulation time becomes extremely short compared with the conventional delivery construction method.

以下、本発明に係る橋桁の手延べ式送り出し架設工法について実施の形態を図面に基づいて説明する。 DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a bridge girder hand-out delivery construction method according to the present invention will be described with reference to the drawings.

図１（ａ）〜（ｃ）は本発明の実施例１に係る手延べ式送り出し架設工法の手順を順に示す側面図であり、図２は本発明の手延べ式送り出し架設工法に用いる手延べ機と橋桁との連結状態の一例を拡大して示す一部を省略した側面図、図３は図２のＡ−Ａ線矢視断面図である。 1 (a) to 1 (c) are side views sequentially showing the procedure of the hand-drawn delivery construction method according to the first embodiment of the present invention, and FIG. 2 is a hand-drawing method used in the hand-feeding delivery construction method of the present invention. The side view which abbreviate | omitted and shown a part which shows an example of the connection state of a machine and a bridge girder, FIG. 3 is AA arrow sectional drawing of FIG.

図１に示すように、本発明の手延べ機５は架設予定の橋桁１の先端上部より前方へ張り出して連結されている。橋桁１は複数連の一定長の橋桁（以下、橋桁部材という））１Ａ〜１Ｈをその長手方向に直列に順次連結してなり、図２に示すように、先頭の橋桁部材１Ａの先端部上面に、例えば側方より見て五角形の連結構２を取り付けるが、あらかじめ橋桁部材１Ａの先端部において両側の腹板１ｂの上端に、それぞれ側方より見て長方形の板状の仕口３の下端を溶接で一体に連接しておく。そして、両側の仕口３の上端上に連結構２の両側板の下端を図３に示すように載置した状態で、継手部材として本例ではボルト継手６により一体に連結する。ボルト継手６は多数のボルト貫通孔（図示せず）を有する一対の長方形の板材とボルト・ナットからなり、仕口３の上部および連結構２の両側板下部の、ボルト継手６のボルト貫通孔に対応する位置に貫通孔（図示せず）を設け、仕口３および連結構２に跨って一対のボルト継手６により仕口３および連結構２の側板を両側から挟み付け、この状態でそれらを貫通する多数のボルト６ａのねじ部にナット（図示せず）を螺合して締め付け、一体に連結するものである。同様に、連結構２の先端垂直端に手延べ機５の基端垂直端を突き合わせた状態で、ボルト継手６により一体に連結している。なお、継手部材としてはボルト継手６に限定するものではなく、例えば溶接継手が使用できる。 As shown in FIG. 1, the handbill 5 according to the present invention is connected to the bridge girder 1 to be erected from the upper end of the bridge. The bridge girder 1 is formed by sequentially connecting a plurality of fixed-length bridge girders (hereinafter referred to as bridge girder members) 1A to 1H in series in the longitudinal direction, and as shown in FIG. 2, the top surface of the front end of the leading bridge girder member 1A. For example, a pentagonal connecting structure 2 is attached when viewed from the side, and the lower end of the rectangular plate-like joint 3 is formed at the upper end of the abdomen 1b on both sides in advance at the front end of the bridge girder member 1A. Are connected together by welding. Then, with the lower ends of the two side plates of the coupling structure 2 placed on the upper ends of the joints 3 on both sides as shown in FIG. The bolt joint 6 is composed of a pair of rectangular plates having a large number of bolt through holes (not shown) and bolts and nuts, and the bolt through holes of the bolt joint 6 at the upper portion of the joint 3 and the lower portions of both side plates of the coupling structure 2. A through hole (not shown) is provided at a position corresponding to, and the side plates of the connection 3 and the connection structure 2 are sandwiched from both sides by a pair of bolt joints 6 across the connection 3 and the connection structure 2. A nut (not shown) is screwed into a threaded portion of a large number of bolts 6a that pass through the bolt 6a, and are coupled together. Similarly, it is integrally connected by the bolt joint 6 in a state where the base end vertical end of the hand extender 5 is abutted with the end vertical end of the connecting structure 2. The joint member is not limited to the bolt joint 6, and for example, a welded joint can be used.

図１に示すように、本実施例は交差地点において直交する道路Ｘを跨いで交差橋を架設する際に適用した工法で、道路Ｘを挟んで両側に橋脚７・８が立設されている。架設予定の橋桁１を図１の左側の橋脚７から前方（左側）へ送り出し、右側の橋脚８上の既設橋桁９と連結する。この既設の橋桁９は、橋脚８から一定の間隔をあけて右側に立設した複数の橋脚（図示せず）上に跨って設置され、また橋脚間に立設された支保工としての固定ベント１０によっても支持されている。 As shown in FIG. 1, the present embodiment is a construction method applied when an intersection bridge is constructed across an orthogonal road X at an intersection, and piers 7 and 8 are erected on both sides of the road X. . The bridge girder 1 to be erected is sent forward (left side) from the left pier 7 in FIG. 1 and connected to the existing bridge girder 9 on the right pier 8. This existing bridge girder 9 is installed over a plurality of piers (not shown) standing on the right side with a certain distance from the piers 8 and is also a fixed vent as a support work erected between the piers. 10 is also supported.

一方、架設予定の橋桁１は、橋脚７とこの橋脚７から一定の間隔をあけて立設した橋脚１１との間および橋脚１１と他の橋脚（図示せず）との間に複数の固定ベント１２が立設され、それらの固定ベント１２上に跨って設置した、送り出し設備として本例では軌条設備１３・１４のうち、先端側の軌条設備１３上に走行可能に載置された台車１５を介して支持される。この状態では、橋桁１は橋脚７・１１の上方に位置し直接支持されていない。また先端の手延べ機５は、橋脚７より前方の道路Ｘの上方へ張り出している（図１（ａ））。 On the other hand, the bridge girder 1 to be constructed has a plurality of fixed vents between the pier 7 and the pier 11 standing at a certain distance from the pier 7 and between the pier 11 and other piers (not shown). In this example, as the delivery equipment installed on the fixed vent 12, the carriage 15 mounted on the tip side of the rail equipment 13 is movably mounted. Supported through. In this state, the bridge girder 1 is located above the piers 7 and 11 and is not directly supported. Further, the hand-rolling machine 5 at the tip projects above the road X ahead of the bridge pier 7 (FIG. 1A).

橋桁１は台車１５の移動によって前方へゆっくりと送り出され、これに伴って橋桁１の後端部の橋桁部材１Ｈに順次一定長の橋桁部材１Ｉ〜１Ｋを連結していく。なお、橋桁部材１Ｉ〜１Ｋの連結作業は、例えば図４に示すようにトラッククレーン２１で吊り上げて行うことができる。また、この状態で、橋桁１は先端の橋脚７上に支持され、台車１５は軌条設備１３上を後方の元の位置へ戻り、軌条設備１４上に別の台車１６が走行可能に載置されて橋桁１の後端部側が支持される。こうして、軌条設備１３・１４上を走行可能な２台の台車１５・１６の移動に伴って、手延べ機５の先端部が前方へ送り出され道路Ｘを跨いで反対側の橋脚８上の既設橋桁９の先端部に到達する（図１（ｂ））。 The bridge girder 1 is slowly fed forward by the movement of the carriage 15, and accordingly, the bridge girder members 1I to 1K having a certain length are sequentially connected to the bridge girder member 1H at the rear end of the bridge girder 1. In addition, the connection operation | work of the bridge girder members 1I-1K can be performed by lifting with the truck crane 21, for example, as shown in FIG. Further, in this state, the bridge girder 1 is supported on the pier 7 at the tip, the carriage 15 returns to the original position on the rear side of the rail equipment 13, and another carriage 16 is placed on the rail equipment 14 so as to be able to travel. The rear end side of the bridge girder 1 is supported. Thus, with the movement of the two carriages 15 and 16 capable of traveling on the rail facilities 13 and 14, the leading end of the hand-drawing machine 5 is sent forward and the existing bridge pier 8 across the road X is installed. The tip of the bridge girder 9 is reached (FIG. 1 (b)).

橋桁１は台車１５・１６の移動に伴ってさらに前方へ送り出され、橋桁１の後端には一定長の橋桁部材１Ｌ〜１Ｐが順次連結される。こうして、先頭の橋桁部材１Ａの先端が、既設橋桁９の先端に突き合わされ、連結される。この状態で、橋桁１は各橋脚７・１１上に設置され支持される（図１（ｃ））。なお、手延べ機５は先頭の橋桁部材１Ａに連結されたままで、既設橋桁９上に位置するが、橋桁１は既に既設橋桁９と一体に連結されているので、従来の架設工法と違って道路Ｘの交通規制をする必要はない。もちろん、従来のような橋桁１の降下作業は不要で省略できるほか、手延べ機５の撤去作業は既設橋桁９上でゆっくり行えばよく、もちろん交通規制の必要もない。 The bridge girder 1 is sent further forward with the movement of the carriages 15 and 16, and bridge girder members 1 </ b> L to 1 </ b> P having a certain length are sequentially connected to the rear end of the bridge girder 1. Thus, the tip of the first bridge girder member 1A is abutted against and connected to the tip of the existing bridge girder 9. In this state, the bridge girder 1 is installed and supported on the piers 7 and 11 (FIG. 1 (c)). The handrail 5 is still connected to the first bridge girder member 1A and is located on the existing bridge girder 9, but the bridge girder 1 is already connected integrally with the existing bridge girder 9, so it differs from the conventional construction method. There is no need to regulate road X traffic. Of course, the conventional descent work of the bridge girder 1 is unnecessary and can be omitted, and the removal work of the handrail 5 can be performed slowly on the existing bridge girder 9 and of course there is no need for traffic regulation.

図４および図５は実施例２に係る手延べ式送り出し架設工法を示す図面で、図４は側面図、図５は図４のＢ−Ｂ線矢視断面図で、拡大して表している。 4 and 5 are drawings showing a hand-drawn delivery construction method according to the second embodiment, FIG. 4 is a side view, and FIG. 5 is a cross-sectional view taken along line BB in FIG. .

本実施例の架設工法が上記実施例１と相違するところは、図５に示すように先端の橋脚７の後方側に立設した橋脚１１上に門構２２を立設し、門構２２の上端水平部２２ａ下に一対のアップリフト止めローラー２３・２３を下向けに吊設し、架設予定の橋桁１の後部側がアップリフトするのを防止したことである。本例は送り出す側の、橋桁１の後方に広いスペースがなく、橋桁１を十分に長く連結できない場合に有効である。その他の構成お
よび架設工法については上記実施例１と共通するので、共通する構成部材は同一の符号を用いて図面に示し、説明を省略する。 The construction method of the present embodiment is different from that of the first embodiment in that the gate structure 22 is erected on the pier 11 erected on the rear side of the end pier 7 as shown in FIG. A pair of uplift stop rollers 23 and 23 are suspended below the upper horizontal portion 22a to prevent the rear side of the bridge girder 1 to be erected from being lifted up. This example is effective when there is no wide space behind the bridge girder 1 on the sending side and the bridge girder 1 cannot be connected sufficiently long. Since the other configuration and the construction method are the same as those in the first embodiment, the common components are shown in the drawings using the same reference numerals, and the description thereof is omitted.

以上に本発明の架設工法について２つの実施例を挙げたが、本発明は下記のように実施することもできる。 Two examples of the construction method of the present invention have been described above, but the present invention can also be implemented as follows.

１．軌条設備１３・１４などを設けずに橋脚あるいは固定ベントなどの支保工上に、台車、ローラー、ころ、ノンフリクションプレートなどを設置して、水平ジャッキで橋桁１を送り出すことができる。 1. A bridge, a roller, a roller, a non-friction plate, etc. can be installed on a support such as a bridge pier or a fixed vent without providing the rail facilities 13 and 14, and the bridge girder 1 can be sent out by a horizontal jack.

２．台車１５・１６を使用する代わりに、台車を備えた複数の移動ベント上に跨って橋桁１を設置し、移動ベントをワイヤーによりウインチで引っ張って送り出してもよい。 2. Instead of using the carriages 15 and 16, the bridge girder 1 may be installed over a plurality of movement vents provided with the carriages, and the movement vents may be pulled by a winch with a wire and sent out.

３．上記１．において橋桁１の先端をワイヤーによりウインチで引っ張って送り出してもよい。 3. Above 1. The tip of the bridge beam 1 may be pulled out by a winch with a wire and sent out.

図１（ａ）〜（ｃ）は本発明の実施例１に係る手延べ式送り出し架設工法の手順を順に示す側面図である。1 (a) to 1 (c) are side views sequentially showing the procedure of a hand-drawn delivery construction method according to Embodiment 1 of the present invention. 本発明の手延べ式送り出し架設工法に用いる手延べ機と橋桁との連結状態の一例を拡大して示す一部を省略した側面図である。It is the side view which abbreviate | omitted and shown an example which shows an example of the connection state of the handrail machine and bridge girder used for the handroll type delivery construction method of this invention. 図２のＡ−Ａ線矢視断面図である。FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. 本発明の実施例２に係る手延べ式送り出し架設工法を示す側面図である。It is a side view which shows the hand delivery type delivery construction method which concerns on Example 2 of this invention. 図４のＢ−Ｂ線矢視断面図で、拡大して表している。4 is an enlarged cross-sectional view taken along line B-B in FIG. 従来の一般的な手延べ式送り出し架設工法を示す側面図である。It is a side view which shows the conventional general hand-drawn delivery construction method. 図６の橋桁先端部および手延べ機の部分を拡大して示す側面図である。It is a side view which expands and shows the bridge | girder front-end | tip part of FIG.

符号の説明Explanation of symbols

１橋桁
１Ａ〜１Ｐ橋桁部材
１ｂ腹版
２連結構
３仕口
５手延べ機
６ボルト継手（継手部材）
６ａボルト
７・８・１１橋脚
９既設橋桁
１０・１２固定ベント
１３・１４軌条設備（送り出し設備）
１５・１６台車
２１クレーン
２２門構
２３ローラ
Ｘ道路（交差点） DESCRIPTION OF SYMBOLS 1 Bridge girder 1A-1P bridge girder member 1b stomach plate 2 Connection structure 3 Joint 5 Hand extender 6 Bolt joint (joint member)
6a bolt 7 ・ 8 ・ 11 Pier 9 Existing bridge girder 10 ・ 12 Fixed vent 13 ・ 14 Rail equipment (feeding equipment)
15.16 trolley 21 crane 22 gate structure 23 Laura X road (intersection)

Claims

橋桁の架設予定地点を挟んで相対向する橋脚を立設し、前記一対の橋脚のうち一方の橋脚側に橋脚より後方にかけて間隔をあけて支保工または橋脚を立設し、それらの支保工上または橋脚上に跨って一定長の橋桁を後方へ直列に連結して設置し、他方の橋脚側から新たに架設する橋桁を先頭に手延べ機を連結して送り出し、前記一対の橋脚間に橋桁を架設する橋桁の手延べ式送り出し架設工法において、
先頭の橋桁の先端部において両側の腹板上に仕口をそれぞれ連接して上方へ延設し、両側の仕口上に連結構の両側板下端部を継手部材にて連結し、該連結構の先端両側垂直縁に前記手延べ機の基端両側垂直縁を突き合わせ状態で継手部材にて連結し、前記連結構を介して先頭の前記橋桁先端上部より手延べ機を前方へ張り出させ、新しい橋桁を送り出す側の前記橋脚より後方にわたり間隔をあけて支保工または橋脚を立設し、それらの支保工上または橋脚上に跨って一定長の橋桁を後方へ順次直列に連結するとともに、
一連に連結した前記橋桁を前記支保工上または前記橋脚上に直接または間接的に設置した台車、ころ、ローラー、ノンフリクションプレートなどで移動可能に支持して前方へ送り出し、前記手延べ機を備えた先頭の橋桁が反対側の橋脚上の既設橋桁に到達した状態で、両方の橋桁垂直面を突き合わせて連結したのち、前記先頭の橋桁から手延べ機を撤去することを特徴とする橋桁の手延べ式送り出し架設工法。 Establish piers that face each other across the planned construction point of the bridge girder, and set up a support pier or pier on one pier side of the pair of piers with a gap from the pier to the rear, and on those support works. Alternatively, a bridge girder of a certain length spans over the bridge pier and is connected in series in the rear, and a bridge girder newly constructed from the other pier side is connected and sent out, and the bridge girder is connected between the pair of bridge piers. In the handed-out delivery construction method of the bridge girder
At the leading end of the leading bridge girder, the joints are connected and extended upward on the abdominal plates on both sides, and the lower ends of both side plates of the connecting structure are connected to the joints on both sides with joint members. Connect the vertical edges of both sides of the handrail to the vertical edges on both sides of the leading edge with a joint member in abutment, and project the handwheel to the front from the top of the leading end of the bridge girder through the connecting structure. A support work or a bridge pier is erected at a distance from the pier on the side where the bridge girder is sent out, and a fixed length bridge girder is serially connected to the rear of the support work or the bridge pier in series.
The bridge girder connected in series is movably supported by a carriage, roller, roller, non-friction plate, etc. installed directly or indirectly on the support or on the bridge pier, and is fed forward, and includes the handrail The bridge girder is characterized in that after the first bridge girder reaches the existing bridge girder on the opposite pier, the vertical surfaces of both bridge girder are connected to each other, and then the handrail is removed from the first bridge girder. Total delivery construction method.

橋桁の架設予定地点を挟んで相対向する橋脚を立設し、
前記一対の橋脚のうち橋桁を送り出す側の橋脚より後方にわたり間隔をあけて支保工または橋脚を立設し、それらの支保工上または橋脚上に跨って軌条設備を設置したのち、該軌条設備上で架設予定の一定長の橋桁を後方へ順次直列に連結するとともに、先頭の橋桁の先端部において両側の腹板上に仕口をそれぞれ連接して上方へ延設し、両側の仕口上に連結構の両側板下端部を継手部材にて連結し、該連結構の先端両側垂直縁に前記手延べ機の基端両側垂直縁を突き合わせ状態で継手部材にて連結し、前記連結構を介して先頭の前記橋桁先端上部より手延べ機を前方へ張り出させる一方、
橋桁の架設予定地点を挟んで反対側の橋脚より後方にかけて間隔をあけて支保工または橋脚を立設し、それらの支保工上または橋脚上に跨って一定長の橋桁を後方へ直列に連結して設置し、
前記軌条設備を走行可能な台車を介して前記橋桁を前方へ送り出し、前記手延べ機を備
えた先頭の橋桁が反対側の橋脚上の既設橋桁に到達した状態で、両方の橋桁垂直面を突き合わせて連結したのち、前記先頭の橋桁から手延べ機を撤去することを特徴とする橋桁の手延べ式送り出し架設工法。 Establishing opposite piers across the planned construction point of the bridge girder,
A support or bridge pier is erected at a distance from the pier on the side where the bridge girder is sent out of the pair of bridge piers, and after installing the rail equipment on the support or on the bridge pier, At the tip of the top bridge girder, the bridges of a certain length planned to be installed are connected sequentially in series, and the joints are connected to the abdomen on both sides and extended upward, and connected to the joints on both sides. The lower end portions of both side plates of the structure are connected by a joint member, and the vertical edges on both ends of the jointing machine are connected to the vertical edges on both ends by the joint member in a state of abutting with each other. while the beginning of the bridge girder tip upper Ru allowed overhang hand total machine forward,
Supporters or piers are erected at intervals behind the opposite piers across the planned construction point of the bridge girder, and bridges of a certain length are connected in series rearwardly on those supports or on the piers. Installed,
The bridge girder is fed forward through a carriage that can travel the rail facility, and both bridge girder vertical surfaces are brought into contact with each other with the leading bridge girder equipped with the handrail reaching the existing bridge girder on the opposite pier. And then connecting the bridge girder from the top bridge girder.

前記橋桁を送り出す側の先頭の前記橋脚より後方に間隔をあけて立設した前記橋脚上に門構を立設し、該門構の上端水平部下に一対のアップリフト止めローラーを下向けに吊設し、架設予定の前記橋桁の後方へ直列に連結した橋桁の後部側を前記アップリフト止めローラーに当接させて支持することを特徴とする請求項１または２記載の橋桁の手延べ式送り出し架設工法。 A gate structure is erected on the pier that is erected at a distance from the head pier on the side where the bridge girder is sent out, and a pair of uplift stopper rollers are suspended below the upper horizontal portion of the gate structure. It was set, according to claim 1 or 2 girders hand total formula wherein the supporting child rear side of the girder which is connected in series to the rear of the bridge girder erection schedule is brought into contact with the uplift stop roller Sending construction method.