JP2020176488A - Launching erection method and launching machine - Google Patents

Launching erection method and launching machine Download PDF

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JP2020176488A
JP2020176488A JP2019081278A JP2019081278A JP2020176488A JP 2020176488 A JP2020176488 A JP 2020176488A JP 2019081278 A JP2019081278 A JP 2019081278A JP 2019081278 A JP2019081278 A JP 2019081278A JP 2020176488 A JP2020176488 A JP 2020176488A
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hand
rolling machine
pier
loading
unloading
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JP7226063B2 (en
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敏 葛西
Satoshi Kasai
敏 葛西
智之 島田
Tomoyuki Shimada
智之 島田
哲之 永島
Tetsuyuki Nagashima
哲之 永島
浩司 村田
Koji Murata
浩司 村田
直之 島宗
Naoyuki Shimamune
直之 島宗
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JFE Engineering Corp
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JFE Engineering Corp
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Abstract

To provide a launching erection method which allows heavy material/equipment to be transported and loaded/unloaded at a top of a pier at a destination even if a crane cannot be placed near the pier at the destination.SOLUTION: A body part 11 of a launching machine 10 is connected to a new girder 80; a rail facility 20 is provided in a launching direction on the body part 11 of the launching machine 10 and the new girder 80 that are connected to each other; a loading/unloading means 12 is provided on a tip end of the launching machine 10; the launching machine 10 and the new girder 80 are launched until the tip end of the launching machine 10 is positioned above a bridge pier P1 which is the launching destination of the new girder 80; a material/equipment 50 is transported above the bridge pier P1 using the rail facility 20; and the material/equipment 50 is loaded/unloaded on a top of the bridge pier P1 using the loading/unloading means 12 or 24. The transportation and the loading/unloading are performed in the state where the launching machine 10 is supported from below by the bridge pier P1.SELECTED DRAWING: Figure 1

Description

本発明は、新設または既設の橋脚に新設桁を架設するための送り出し架設工法、およびそれに用いられる手延べ機に関する。 The present invention relates to a delivery erection method for erection of a new girder on a new or existing pier, and a hand-rolling machine used therein.

送り出し架設工法により新設桁を架設する場合、送り出し先の橋脚上に、支承、送り出し装置、降下設備等の資機材の運搬および設置や撤去を行う必要がある。これらの資機材は重量物であるため、河川内や渓谷に架かる橋等のように橋脚近傍にクレーンの設置ができない場合、クレーンの設置が可能な位置からの離隔距離に併せた性能を有する大型クレーンを使用する必要がある。この場合、大型クレーンの費用に加えて、搬入路の検討や設置位置での地盤の照査等も併せて必要となる。 When a new girder is erected by the delivery erection method, it is necessary to transport, install and remove materials and equipment such as bearings, delivery devices and descent equipment on the pier of the delivery destination. Since these materials and equipment are heavy objects, if a crane cannot be installed near the pier, such as in a river or a bridge over a valley, a large size that has performance that matches the distance from the position where the crane can be installed. You need to use a crane. In this case, in addition to the cost of a large crane, it is also necessary to consider the carry-in route and check the ground at the installation position.

一方、大型クレーンを使用しない架設方法も知られている（特許文献１）。 On the other hand, an erection method that does not use a large crane is also known (Patent Document 1).

しかしながら、手延べ機を用いた送り出し架設工法については何ら記載されておらず、また、そのような架設工法のために、送り出し先の橋脚の天端に架設設備や部材の搬入を行う必要性については元々解決すべき問題点とされていない。 However, there is no description about the delivery erection method using a hand-rolling machine, and the necessity of carrying in erection equipment and members to the top of the pier at the delivery destination for such an erection method. Is not originally a problem to be solved.

特開平１０−２９２３１７号公報Japanese Unexamined Patent Publication No. 10-292317

本発明は、かかる点に鑑みてなされたものであり、送り出し先の橋脚近傍にクレーンを配置できない場合でも、大きな重量の資機材を送り出し先の橋脚の天端に、運搬および積み降ろしをすることが可能な送り出し架設工法および手延べ機を提供するものである。 The present invention has been made in view of this point, and even if a crane cannot be placed near the pier at the delivery destination, heavy materials and equipment can be transported and loaded / unloaded at the top of the pier at the delivery destination. It provides a delivery erection method and a hand-rolling machine that can be used.

本発明は、以下の送り出し架設工法および手延べ機により、前記課題を解決したものである。 The present invention solves the above-mentioned problems by the following delivery erection method and hand-rolling machine.

即ち、本発明に係る送り出し架設工法は、手延べ機を用いて新設桁を送り出して架設する送り出し架設工法であって、前記手延べ機および前記新設桁を連結する連結工程と、前記手延べ機および前記新設桁の上に、送り出し方向に軌条設備を設ける軌条設備設置工程と、前記手延べ機の先端部に積み降ろし手段を設置する積み降ろし手段設置工程と、前記手延べ機の先端部が前記新設桁の送り出し先の橋脚の上方に位置するまで、前記手延べ機および前記新設桁を送り出す送り出し工程と、前記軌条設備を用いて前記橋脚の上方に資機材を運搬する運搬工程と、前記積み降ろし手段を用いて、前記運搬工程で運搬した前記資機材を前記橋脚の天端に積み降ろす積み降ろし工程と、を有し、前記運搬工程及び前記積み降ろし工程は、前記手延べ機が前記橋脚に下方から支持された状態で行うことを特徴とする送り出し架設工法である。 That is, the delivery erection method according to the present invention is a delivery erection method in which a new girder is sent out and erected by using a hand-rolling machine, and a connecting process for connecting the hand-rolling machine and the new girder and the hand-rolling machine. And the rail equipment installation process of installing the rail equipment in the delivery direction on the new girder, the loading and unloading means installation process of installing the loading and unloading means at the tip of the hand-rolling machine, and the tip of the hand-rolling machine. A delivery step of sending out the hand-rolling machine and the new girder until it is located above the pier to which the new girder is sent, a transportation step of transporting materials and equipment above the pier using the rail equipment, and the above-mentioned It has a loading / unloading step of loading / unloading the materials / equipment carried in the transporting step to the top end of the pier by using the loading / unloading means, and the transporting step and the loading / unloading step are performed by the hand-rolling machine. It is a delivery erection method characterized by being supported from below by the pier.

ここで、本願において、「先端」とは、送り出し方向前方側の端部のことであり、「先端部」とは、「先端」を含む一定の領域のことである。 Here, in the present application, the "tip" is an end on the front side in the feeding direction, and the "tip" is a certain region including the "tip".

前記運搬工程及び前記積み降ろし工程において前記手延べ機が前記橋脚に下方から支持された前記状態は、前記橋脚が前記手延べ機の先端部の下方に位置していて、前記橋脚に一端部が保持されたサポート部材が、他端部で、前記手延べ機の先端部を下方から支持する状態であってもよい。 In the state in which the hand-rolling machine is supported from below by the pier in the transporting step and the loading / unloading step, the pier is located below the tip of the hand-rolling machine, and one end of the pier is provided. The held support member may be in a state where the other end portion supports the tip end portion of the hand-rolling machine from below.

前記サポート部材は前記手延べ機の先端部に格納されており、該サポート部材を鉛直に立設する工程を備えていてもよい。 The support member is stored in the tip end portion of the hand-rolling machine, and may include a step of vertically erecting the support member.

前記運搬工程は、前記軌条設備の上に配置された台車を用いて、前記橋脚の上方に支承部材を運搬する第１運搬工程を含み、また、前記積み降ろし工程は、前記第１運搬工程で運搬された前記支承部材を、前記台車に備えられた前記積み降ろし手段としてのチェーンブロックを用いて、前記橋脚の天端に積み降ろす支承積み降ろし工程を含むようにしてもよい。 The transportation step includes a first transportation step of transporting a bearing member above the pier using a carriage arranged on the rail equipment, and the loading / unloading step is the first transportation step. The transported bearing member may include a bearing loading / unloading step of loading / unloading the transported support member at the top end of the pier by using a chain block as the loading / unloading means provided on the trolley.

ここで、支承部材とは、１つの支承の全体または１つの支承を構成する各部品のことを意味する。 Here, the bearing member means the whole of one bearing or each component constituting one bearing.

前記運搬工程は、前記軌条設備を用いて前記橋脚の上方に前記支承部材以外の資機材を運搬する第２運搬工程を含み、また、前記積み降ろし工程は、前記支承積み降ろし工程とは別に、前記橋脚の天端に、前記積み降ろし手段としてのクレーンにより前記支承部材以外の資機材を積み降ろすクレーン積み降ろし工程を含むようにしてもよい。 The transporting step includes a second transporting step of transporting materials and equipment other than the bearing members above the bridge pier using the rail equipment, and the loading / unloading step is separate from the bearing loading / unloading step. A crane loading / unloading step of loading / unloading materials / equipment other than the bearing members by a crane as the loading / unloading means may be included at the top end of the pier.

前記積み降ろし工程は、前記クレーン積み降ろし工程もしくは前記支承積み降ろし工程のいずれか一方の積み降ろし工程が行われた後、他方の積み降ろし工程で積み降ろしを行う前記積み降ろし手段による積み降ろしが可能な所定距離だけ前記手延べ機の送り出しもしくは引き戻しを行う手延べ機移動工程を含み、前記手延べ機移動工程で前記所定距離だけ送り出しもしくは引き戻した前記手延べ機の先端部は、前記一方の積み降ろし工程において前記手延べ機の先端部が前記橋脚に支持された状態となるようにするために前記サポート部材の一端部が保持されていた前記橋脚における第１位置とは異なる位置である前記橋脚における第２位置で保持されて前記橋脚に下方から支持された状態で、前記第１運搬工程及び前記第２運搬工程のうち後に行われる運搬工程及び前記他方の積み降ろし工程を行うようにしてもよい。 The loading / unloading step can be carried out by the loading / unloading means in which one of the crane loading / unloading step and the support loading / unloading step is performed and then the other loading / unloading step is performed. The tip of the hand-rolling machine, which includes a hand-rolling machine moving step of sending out or pulling back the hand-rolling machine by a predetermined distance, and feeding or pulling back by the predetermined distance in the hand-rolling machine moving step, is a stack of one of the above. The bridge pedestal is at a position different from the first position in the pier where one end of the support member is held so that the tip end portion of the hand-rolling machine is supported by the pier in the unloading step. In a state of being held at the second position in the above and supported from below by the bridge pier, the transportation step and the other loading / unloading process which are performed later in the first transportation step and the second transportation step may be performed. Good.

前記一方の積み降ろし工程は、前記支承積み降ろし工程であり、前記第１運搬工程及び前記第２運搬工程のうち先に行われる運搬工程は前記第１運搬工程であるようにしてもよい。 The one loading / unloading step may be the bearing loading / unloading step, and the first transporting step of the first transporting step and the second transporting step may be the first transporting step.

前記橋脚における前記第１位置は前記橋脚の天端上にあり、前記橋脚における前記第２位置は、前記橋脚の側面に取り付けられたブラケット上にあるようにしてもよい。 The first position on the pier may be on the top edge of the pier and the second position on the pier may be on a bracket attached to the side surface of the pier.

前記サポート部材が下方から支持する前記手延べ機の先端部は、水平面内を回動可能であり、前記手延べ機の前記先端部が水平面内を回動することにより、前記サポート部材は、前記手延べ機の下方に位置する前記橋脚への設置位置を変更可能であるようにしてもよい。 The tip of the hand-rolling machine supported by the support member from below can rotate in the horizontal plane, and the tip of the hand-rolling machine rotates in the horizontal plane so that the support member can be rotated in the horizontal plane. The installation position on the pier located below the hand-rolling machine may be changed.

本発明に係る手延べ機は、新設桁の先端に取り付けられて、該新設桁の送り出し架設に用いる手延べ機であって、送り出し方向に形成された、資機材を運搬するために用いられる軌条設備と、先端部に設けられ、下方に位置する橋脚からの反力を受けるためのサポート部材と、を備えていることを特徴とする手延べ機である。 The hand-rolling machine according to the present invention is a hand-rolling machine attached to the tip of a new girder and used for feeding and erection of the new girder, and is a rail formed in the feeding direction and used for transporting materials and equipment. It is a hand-rolling machine characterized by being provided with equipment and a support member provided at the tip portion for receiving a reaction force from a pier located below.

前記サポート部材は、前記手延べ機の先端部に格納可能であることが好ましい。 It is preferable that the support member can be stored at the tip of the hand-rolling machine.

前記手延べ機の先端部に軸支され、水平面内を回動可能な回動部であって、該回動部は第２のサポート部材によって支持され、前記回動部の回動により前記第２のサポート部材による前記手延べ機の先端部の支持位置が変更可能であるように構成してもよい。 A rotating portion that is pivotally supported by the tip of the hand-rolling machine and can rotate in a horizontal plane. The rotating portion is supported by a second support member, and the rotation of the rotating portion causes the first The support position of the tip end portion of the hand-rolling machine may be changed by the support member of 2.

本発明に係る送り出し架設工法および手延べ機によれば、送り出し先の橋脚近傍にクレーンを配置できない場合でも、大きな重量の資機材を送り出し先の橋脚の天端に、運搬および積み降ろしをすることができ、新設桁を架設することができる。 According to the delivery erection method and the hand-rolling machine according to the present invention, even if a crane cannot be placed near the pier of the delivery destination, heavy materials and equipment can be transported and loaded and unloaded at the top of the pier of the delivery destination. And new girders can be erected.

本発明の実施形態に係る送り出し架設工法を用いて新設桁８０を架設する際の所定の工程（資機材５０の積み込みから橋脚Ｐ１の天端への資機材５０の積み降ろしまでの工程）を模式的に示す正面図A model of a predetermined process (process from loading of materials and equipment 50 to loading and unloading of materials and equipment 50 to the top of the pier P1) when erection of a new girder 80 by using the delivery erection method according to the embodiment of the present invention. Front view 本発明の実施形態に係る送り出し架設工法の一工程を模式的に示す側面図A side view schematically showing one step of the delivery erection method according to the embodiment of the present invention. 本発明の実施形態に係る送り出し架設工法の一工程を模式的に示す側面図A side view schematically showing one step of the delivery erection method according to the embodiment of the present invention. 本発明の実施形態に係る送り出し架設工法の一工程を模式的に示す側面図A side view schematically showing one step of the delivery erection method according to the embodiment of the present invention. 本発明の実施形態に係る送り出し架設工法の一工程を模式的に示す側面図A side view schematically showing one step of the delivery erection method according to the embodiment of the present invention. 本発明の実施形態に係る送り出し架設工法の一工程を模式的に示す側面図A side view schematically showing one step of the delivery erection method according to the embodiment of the present invention. 本発明の実施形態に係る送り出し架設工法の一工程を模式的に示す側面図A side view schematically showing one step of the delivery erection method according to the embodiment of the present invention. 本発明の実施形態に係る送り出し架設工法の一工程を模式的に示す側面図A side view schematically showing one step of the delivery erection method according to the embodiment of the present invention. 本発明の実施形態に係る送り出し架設工法の一工程を模式的に示す側面図A side view schematically showing one step of the delivery erection method according to the embodiment of the present invention. 本発明の実施形態に係る送り出し架設工法の一工程を模式的に示す側面図A side view schematically showing one step of the delivery erection method according to the embodiment of the present invention. 支承５０Ａの運搬・積み降ろしの状況を示す正面図（橋軸方向から見た正面図）Front view showing the status of transportation and loading / unloading of bearing 50A (front view seen from the bridge axis direction) 本発明の実施形態に係る手延べ機１０を橋軸直角方向から見た側面図Side view of the hand-rolling machine 10 according to the embodiment of the present invention as viewed from a direction perpendicular to the bridge axis. 本発明の実施形態に係る手延べ機１０を上方から見た上面図Top view of the hand-rolling machine 10 according to the embodiment of the present invention as viewed from above. 本発明の実施形態に係る手延べ機１０の先端部を上方から見た上面図Top view of the tip of the hand-rolling machine 10 according to the embodiment of the present invention as viewed from above.

以下、図面を参照して、本発明の実施形態に係る送り出し架設工法および手延べ機について詳細に説明する。 Hereinafter, the delivery erection method and the hand-rolling machine according to the embodiment of the present invention will be described in detail with reference to the drawings.

（１）本発明の実施形態に係る送り出し架設工法
（１−１）概要の説明
図１は、本発明の実施形態に係る送り出し架設工法を用いて新設桁８０を架設する際の所定の工程（資機材５０の積み込みから橋脚Ｐ１の天端への資機材５０の積み降ろしまでの工程）を模式的に示す正面図（橋軸直角方向から見た正面図）である。 (1) Description of Outline of Send-out erection method (1-1) according to the embodiment of the present invention FIG. 1 shows a predetermined step (1) when a new girder 80 is erected using the delivery erection method according to the embodiment of the present invention. It is a front view (front view seen from the direction perpendicular to the bridge axis) which shows typically the process from loading of material and equipment 50 to loading and unloading of material and equipment 50 to the top end of a bridge pier P1.

図１に示すように、本発明の実施形態に係る送り出し架設工法においては、新たに架設する新設桁８０の先端に手延べ機１０の本体部１１を連結して、新設桁８０を所定の径間に架設するが、連結された手延べ機１０の本体部１１および新設桁８０の上には、それらの長手方向（送り出し方向）に軌条設備２０を設けている。また、手延べ機１０の本体部１１の先端部の上部にはクレーン１２を設置している。さらに、手延べ機１０の本体部１１の先端部は、橋脚Ｐ１の天端に設置されたサポート部材１４によって支持されている。 As shown in FIG. 1, in the delivery erection method according to the embodiment of the present invention, the main body 11 of the hand-rolling machine 10 is connected to the tip of the newly erected new girder 80, and the new girder 80 has a predetermined diameter. Although erected between them, rail equipment 20 is provided in the longitudinal direction (feeding direction) of the main body 11 and the new girder 80 of the connected hand-rolling machine 10. Further, a crane 12 is installed above the tip of the main body 11 of the hand-rolling machine 10. Further, the tip of the main body 11 of the hand-rolling machine 10 is supported by a support member 14 installed at the top of the pier P1.

新設桁８０を所定の径間に架設する前に、橋脚Ｐ１の天端に資機材５０（支承５０Ａや送り出し装置および降下設備のための資機材５０Ｂ等）を運搬する必要があるが、本実施形態に係る送り出し架設工法においては、連結された手延べ機１０の本体部１１および新設桁８０の上に設けた軌条設備２０の上を自走する台車２２によって、資機材５０を橋脚Ｐ１の上方または上方付近まで運搬する。そして、手延べ機１０の本体部１１の先端部に設置したクレーン１２によって、資機材５０を橋脚Ｐ１の天端に積み降ろす。ただし、支承５０Ａ（図５、図６、図１１〜図１３参照）のように、重量が大きく、クレーン１２による積み降ろしが困難な資機材５０を積み降ろす場合には、台車２２に設けられたチェーンブロック２４（図１１参照）によって、資機材５０を、橋脚Ｐ１の天端に積み降ろす。 Before erection of the new girder 80 in the predetermined span, it is necessary to transport the equipment 50 (bearing 50A, equipment 50B for the delivery device and descent equipment, etc.) to the top of the pier P1, but this implementation In the delivery erection method according to the form, the equipment 50 is placed above the bridge pier P1 by the trolley 22 that runs on the rail equipment 20 provided on the main body 11 of the connected hand-rolling machine 10 and the new girder 80. Or carry it to near the top. Then, the materials and equipment 50 are loaded and unloaded on the top end of the pier P1 by the crane 12 installed at the tip of the main body 11 of the hand-rolling machine 10. However, when loading and unloading the equipment 50, which is heavy and difficult to load and unload with the crane 12, as in the bearing 50A (see FIGS. 5, 6, and 11 to 13), the trolley 22 is provided. The equipment and materials 50 are loaded and unloaded on the top of the pier P1 by the chain block 24 (see FIG. 11).

本実施形態に係る送り出し架設工法を用いて新設桁８０を架設する際の所定の工程（台車２２への資機材５０の積み込みから橋脚Ｐ１の天端への資機材５０の積み降ろしまでの工程）においては、軌条設備２０の上を自走する台車２２によって、資機材５０を橋脚Ｐ１の上方または上方付近まで運搬するので、大型クレーンを使用しなくても、施工性良く、橋脚Ｐ１の天端に資機材５０を運搬することができる。 A predetermined process for erection of the new girder 80 using the delivery erection method according to the present embodiment (process from loading the material / equipment 50 on the bogie 22 to loading / unloading the material / equipment 50 on the top of the pier P1). In the above, since the equipment and materials 50 are transported to the upper side or the vicinity of the upper side of the pier P1 by the bogie 22 that runs on the rail equipment 20, the workability is good without using a large crane, and the top end of the pier P1. The equipment and materials 50 can be transported to.

なお、台車２２は自走タイプでなくてもよく、他から動力を受けて軌条設備２０の上を走行する従走タイプであっても使用可能である。 The bogie 22 does not have to be a self-propelled type, and can be used even if it is a follow-up type that travels on the rail equipment 20 by receiving power from another.

（１−２）各工程についての説明
図２〜図１０は本発明の実施形態に係る送り出し架設工法の特徴的な各工程を模式的に示す図であり、手延べ機１０および新設桁８０を側方（橋軸直角方向）から見た側面図である。 (1-2) Explanation of Each Step FIGS. 2 to 10 are diagrams schematically showing each characteristic step of the delivery erection method according to the embodiment of the present invention, and the hand-rolling machine 10 and the new girder 80 are illustrated. It is a side view seen from the side (the direction perpendicular to the bridge axis).

図１〜図１０を参照しつつ、本実施形態に係る送り出し架設工法の各工程（ステップＳ１〜Ｓ１５）について説明するが、ステップＳ１〜Ｓ１５の各工程のうち、本実施形態の特徴的な工程以外の工程（以下のステップＳ１〜Ｓ３、Ｓ１３〜Ｓ１５）は、一般的に行われている工程であるので、それらの工程を直接的に示す図は示していない。 Each step (steps S1 to S15) of the delivery erection method according to the present embodiment will be described with reference to FIGS. 1 to 10, but among the steps S1 to S15, the characteristic steps of the present embodiment Since the steps other than the above steps (steps S1 to S3 and S13 to S15 below) are generally performed steps, a diagram showing those steps directly is not shown.

また、本実施形態では、資機材５０のうち重量の大きい支承５０Ａをまず橋脚Ｐ１の天端に運搬して据え付けた後、手延べ機１０を手前側に引き戻してセットバックし、その後、橋脚Ｐ１の天端に、支承５０Ａ以外の資機材５０（送り出しおよび降下設備のための資機材５０Ｂ等）を運搬して、クレーン１２で橋脚Ｐ１の天端に積み降ろし、送り出しのための装置や降下設備のための装置を組み立てているが、施工の順序はこれに限定されない。即ち、支承５０Ａ以外の資機材５０を先に運搬した後、支承５０Ａを運搬する手順であってもよい。 Further, in the present embodiment, the heavy bearing 50A of the materials and equipment 50 is first transported to the top end of the pier P1 and installed, and then the hand-rolling machine 10 is pulled back to the front side to set back, and then the pier P1 Equipment 50 other than bearing 50A (materials and equipment 50B for delivery and descent equipment, etc.) is transported to the top of the bridge, loaded and unloaded on the top of pier P1 with a crane 12, and equipment and descent equipment for delivery. We are assembling the equipment for, but the order of construction is not limited to this. That is, the procedure may be a procedure in which the materials and equipment 50 other than the bearing 50A are first transported, and then the bearing 50A is transported.

＜ステップＳ１＞
新設桁８０の送り出しに用いる軌条設備９２を、隣接径間の主桁上や隣接道路９０に設置し、該軌条設備９２の上に台車９４を配置する。台車９４は自走タイプでも従走タイプでも、どちらでも使用可能であるが、従走タイプを用いる場合は、駆動装置（ウィンチ、クランプ式ジャッキ、ダブルツインジャッキ等）を用いる必要がある。 <Step S1>
The rail equipment 92 used for sending out the new girder 80 is installed on the main girder of the adjacent span or on the adjacent road 90, and the bogie 94 is arranged on the rail equipment 92. The bogie 94 can be used in either a self-propelled type or a follow-up type, but when the follow-up type is used, it is necessary to use a drive device (winch, clamp type jack, double twin jack, etc.).

＜ステップＳ２＞
架設する新設桁８０を、桁の送り出しに用いる軌条設備９２上の台車９４の上に載置する。 <Step S2>
The new girder 80 to be erected is placed on the bogie 94 on the rail equipment 92 used for sending out the girder.

＜ステップＳ３＞
手延べ機１０の本体部１１を、桁の送り出しに用いる軌条設備９２上の台車９４の上に載置しつつ組み立てるとともに、架設する新設桁８０に連結する。なお、手延べ機１０の本体部１１は、従来から用いられている手延べ機の範疇に含まれる手延べ機である。 <Step S3>
The main body 11 of the hand-rolling machine 10 is assembled while being placed on the bogie 94 on the rail equipment 92 used for feeding the girder, and is connected to the newly installed girder 80 to be erected. The main body 11 of the hand-rolling machine 10 is a hand-rolling machine included in the category of the hand-rolling machines that have been conventionally used.

＜ステップＳ４＞
図２に示すように、連結した手延べ機１０の本体部１１および新設桁８０の上に、送り出し方向に、軌条設備２０を設けるとともに、手延べ機１０の本体部１１の先端部にクレーン１２を設置する。また、手延べ機１０の本体部１１の先端部には、格納可能にサポート部材１４が設けられている。後に詳述する本発明の実施形態に係る手延べ機１０は、本体部１１と、サポート部材１４と、軌条設備２０と、を備えるので、ステップＳ４の段階で、本発明の実施形態に係る手延べ機１０が構築されたことになる。また、「手延べ機１０の本体部１１の先端部」は「手延べ機１０の先端部」と同一の箇所であり、「手延べ機１０の本体部１１の下部」は「手延べ機１０の下部」と同一の箇所であるので、それらの箇所の表記については、以下では、「手延べ機１０の先端部」および「手延べ機１０の下部」の表記を用いる。 <Step S4>
As shown in FIG. 2, a rail facility 20 is provided in the delivery direction on the main body 11 and the new girder 80 of the connected hand-rolling machine 10, and the crane 12 is provided at the tip of the main body 11 of the hand-rolling machine 10. To install. Further, a support member 14 is provided at the tip of the main body 11 of the hand-rolling machine 10 so as to be retractable. Since the hand-rolling machine 10 according to the embodiment of the present invention, which will be described in detail later, includes a main body portion 11, a support member 14, and a rail facility 20, at the stage of step S4, the hand according to the embodiment of the present invention. This means that the total machine 10 has been constructed. Further, the "tip of the main body 11 of the hand-rolling machine 10" is the same as the "tip of the hand-rolling machine 10", and the "lower part of the main body 11 of the hand-rolling machine 10" is the "hand-rolling machine 10". Since the parts are the same as the "lower part of the hand-rolling machine", the notations of "the tip of the hand-rolling machine 10" and "the lower part of the hand-rolling machine 10" are used below.

＜ステップＳ５＞
図３に示すように、連結した手延べ機１０および新設桁８０を、橋脚Ｐ１（図１参照）の天端の上方の位置に、手延べ機１０の先端部が達するまで、軌条設備９２上の台車９４で送り出す。台車９４が従走タイプの場合には、駆動装置（ウィンチ、クランプ式ジャッキ、ダブルツインジャッキ等）を用いて送り出す。 <Step S5>
As shown in FIG. 3, the connected hand-rolling machine 10 and the new girder 80 are placed on the rail equipment 92 until the tip of the hand-rolling machine 10 reaches a position above the top of the pier P1 (see FIG. 1). It is sent out by the dolly 94 of. When the bogie 94 is a follow-up type, it is sent out by using a drive device (winch, clamp type jack, double twin jack, etc.).

＜ステップＳ６＞
手延べ機１０の先端部の下部に橋軸直角方向（手延べ機１０の長手方向と直交する水平方向）に格納していたサポート部材１４の一端部は、ヒンジ部材１４Ａのピン支点を中心に回動させて鉛直にして、橋脚Ｐ１の天端上で保持される（図４参照）。これによって、手延べ機１０の先端部がサポート部材１４によって支持される。 <Step S6>
One end of the support member 14 stored in the lower part of the tip of the hand-rolling machine 10 in the direction perpendicular to the bridge axis (horizontal direction orthogonal to the longitudinal direction of the hand-rolling machine 10) is centered on the pin fulcrum of the hinge member 14A. It is rotated to be vertical and held on the top of the pier P1 (see FIG. 4). As a result, the tip of the hand-rolling machine 10 is supported by the support member 14.

＜ステップＳ７＞
手延べ機１０の先端部がサポート部材１４によって支持されたら、手延べ機１０および新設桁８０の上に設けた軌条設備２０に配置した台車２２に、支承５０Ａを、隣接道路９０に設置したクレーン９６（図１参照）で積み込み、台車２２を手延べ機１０の先端部まで移動させて、支承５０Ａを橋脚Ｐ１の天端の上方に配置させる（図５参照）。ここでは、台車２２に自走タイプの台車を使用することを想定しているが、台車２２に従走タイプを用いる場合は、駆動装置（ウィンチ、クランプ式ジャッキ、ダブルツインジャッキ等）を用いて台車２２を移動させる。 <Step S7>
When the tip of the hand-rolling machine 10 is supported by the support member 14, the bearing 50A is installed on the trolley 22 arranged on the rail equipment 20 provided on the hand-rolling machine 10 and the new girder 80, and the bearing 50A is installed on the adjacent road 90. Loading at 96 (see FIG. 1), the dolly 22 is moved to the tip of the hand-rolling machine 10, and the bearing 50A is placed above the top end of the pier P1 (see FIG. 5). Here, it is assumed that a self-propelled type bogie is used for the bogie 22, but when the follow-up type of the bogie 22 is used, a drive device (winch, clamp type jack, double twin jack, etc.) is used. Move the dolly 22.

＜ステップＳ８＞
図６に示すように、台車２２に設けられたチェーンブロック２４（図１１参照）によって、支承５０Ａを、橋脚Ｐ１の天端に積み降ろす。なお、本実施形態では、支承５０Ａの重量が大きく、手延べ機１０の先端部に設置したクレーン１２では、支承５０Ａを積み降ろすことが困難な場合を想定しているが、本発明はこれに限定されない。即ち、クレーンの性能、支承５０Ａの重量によってはクレーンにより支承５０Ａを積み降ろすようにしてもよいし、支承５０Ａを構成部品に分割した場合には、構成部品ごとにクレーンにより支承５０Ａを積み降ろすようにしてもよい。また、支承５０Ａの重量が特に大きく、チェーンブロック２４を用いても支承５０Ａの全体を積み降ろすことが作業上困難な場合は、チェーンブロック２４を用いる場合であっても支承５０Ａを構成部品に分割して、構成部品ごとに積み降ろすようにする。 <Step S8>
As shown in FIG. 6, the bearing 50A is loaded and unloaded on the top end of the pier P1 by the chain block 24 (see FIG. 11) provided on the bogie 22. In the present embodiment, it is assumed that the weight of the bearing 50A is large and it is difficult for the crane 12 installed at the tip of the hand-rolling machine 10 to load and unload the bearing 50A. Not limited. That is, depending on the performance of the crane and the weight of the bearing 50A, the bearing 50A may be loaded and unloaded by the crane, and when the bearing 50A is divided into components, the bearing 50A may be loaded and unloaded by the crane for each component. It may be. Further, when the weight of the bearing 50A is particularly large and it is difficult to load and unload the entire bearing 50A even when the chain block 24 is used, the bearing 50A is divided into components even when the chain block 24 is used. Then, load and unload each component.

＜ステップＳ９＞
橋脚Ｐ１の天端に設置したサポート部材１４を手延べ機１０の下部に格納するとともに、橋脚Ｐ１上部の側面にブラケット１６を取り付け、該ブラケット１６の上にサポート部材１８の一端部は新たに保持される（図７参照）。サポート部材１４は手延べ機１０に格納せずに撤去してもよく、その場合には、サポート部材１４の全部または一部を、ブラケット１６の上に設置するサポート部材１８の全部または一部に使い回してもよい。 <Step S9>
The support member 14 installed at the top of the pier P1 is stored in the lower part of the hand-rolling machine 10, the bracket 16 is attached to the side surface of the upper part of the pier P1, and one end of the support member 18 is newly held on the bracket 16. (See FIG. 7). The support member 14 may be removed without being stored in the hand-rolling machine 10, in which case all or part of the support member 14 may be attached to all or part of the support member 18 installed on the bracket 16. You may reuse it.

また、サポート部材１８も、サポート部材１４と同様に、手延べ機１０の下部に格納できるような構成にしておいてもよいが、ここでは、サポート部材１８は、橋脚Ｐ１の天端上の作業員が組み立てて、ブラケット１６の上に立設するものとして説明する。なお、図７〜図１０においては、橋脚Ｐ１の天端に据え付けた支承５０Ａの図示は行っていない。 Further, the support member 18 may be configured so that it can be stored in the lower part of the hand-rolling machine 10 like the support member 14, but here, the support member 18 is a work on the top end of the pier P1. It will be described as being assembled by a member and erected on the bracket 16. In FIGS. 7 to 10, the bearing 50A installed at the top of the pier P1 is not shown.

＜ステップＳ１０＞
手延べ機１０を手前側に引き戻してセットバックし、セットバックした手延べ機１０の先端部をサポート部材１８によって支持する（図８参照）。なお、図８〜図１０においては、サポート部材１４のヒンジ部材１４Ａの図示は行っていない。 <Step S10>
The hand-rolling machine 10 is pulled back to the front side to set back, and the tip of the set-back hand-rolling machine 10 is supported by the support member 18 (see FIG. 8). Note that, in FIGS. 8 to 10, the hinge member 14A of the support member 14 is not shown.

＜ステップＳ１１＞
手延べ機１０の先端部がサポート部材１８によって支持されたら、手延べ機１０および新設桁８０の上に設けた軌条設備２０に配置した台車２２に、支承５０Ａ以外の資機材５０（送り出しおよび降下設備のための資機材５０Ｂ等）を、隣接道路９０に設置したクレーン９６で積み込み（図１参照）、台車２２を手延べ機１０の先端部（クレーン１２による作業可能領域内）まで移動させる（図１、図９参照）。そして、手延べ機１０の先端部に設置したクレーン１２によって、送り出し装置および降下設備のための資機材５０Ｂ等を橋脚Ｐ１の天端に積み降ろす（図９参照）。 <Step S11>
When the tip of the hand-rolling machine 10 is supported by the support member 18, the hand-rolling machine 10 and the trolley 22 arranged on the rail equipment 20 provided on the new girder 80 are equipped with materials and equipment 50 (delivery and descent) other than the bearing 50A. The materials and equipment 50B, etc. for the equipment are loaded by the crane 96 installed on the adjacent road 90 (see FIG. 1), and the trolley 22 is moved to the tip of the hand-rolling machine 10 (within the workable area by the crane 12) (see FIG. 1). (See FIGS. 1 and 9). Then, the crane 12 installed at the tip of the hand-rolling machine 10 loads and unloads the equipment and materials 50B and the like for the delivery device and the descent equipment on the top end of the pier P1 (see FIG. 9).

＜ステップＳ１２＞
橋脚Ｐ１の天端に運搬した資機材５０Ｂ等を組み立てて、送り出し装置や降下設備のための鋼製ジャッキベース３０を橋脚Ｐ１の天端上に組み立てる（図１０参照）。そして、鋼製ジャッキベース３０に手延べ機１０の先端部を支持させた後、サポート部材１８を撤去する（図１０参照）。 <Step S12>
The materials and equipment 50B and the like transported to the top of the pier P1 are assembled, and the steel jack base 30 for the delivery device and the descent equipment is assembled on the top of the pier P1 (see FIG. 10). Then, after the tip portion of the hand-rolling machine 10 is supported by the steel jack base 30, the support member 18 is removed (see FIG. 10).

＜ステップＳ１３＞
手延べ機１０および新設桁８０をさらに送り出し、新設桁８０を架設位置の上方に配置する。 <Step S13>
The hand-rolling machine 10 and the new girder 80 are further sent out, and the new girder 80 is arranged above the erection position.

＜ステップＳ１４＞
手延べ機１０を新設桁８０から切り離して撤去する。 <Step S14>
The hand-rolling machine 10 is separated from the new girder 80 and removed.

＜ステップＳ１５＞
鋼製ジャッキベース３０に設けた降下設備および橋台Ａ１上に設けた降下設備によって、新設桁８０をジャッキダウンし、新設桁８０を橋脚Ｐ１と橋台Ａ１との間の径間に架設する。 <Step S15>
The new girder 80 is jacked down by the descent equipment provided on the steel jack base 30 and the descent equipment provided on the abutment A1, and the new girder 80 is erected in the span between the pier P1 and the abutment A1.

（１−３）補足
図１１に示すように、チェーンブロック２４は、手延べ機１０および新設桁８０の長手方向と直交する方向に台車２２に固定された天井梁２２Ａの両端部付近にそれぞれ取り付けられている。図１１において、左側の状態は下降時（据付時）の状態を示し、右側の状態は運搬時の状態を示している。 (1-3) Supplement As shown in FIG. 11, the chain block 24 is attached near both ends of the ceiling beam 22A fixed to the carriage 22 in the direction orthogonal to the longitudinal direction of the hand-rolling machine 10 and the new girder 80, respectively. Has been done. In FIG. 11, the state on the left side shows the state at the time of lowering (installation), and the state on the right side shows the state at the time of transportation.

支承５０Ａは、重量のバランスが取れるように、図１１に示すように、手延べ機１０および新設桁８０の両側方に１つずつ配置された状態で、運搬および下降を行う。 As shown in FIG. 11, the bearing 50A is carried and lowered while being arranged on both sides of the hand-rolling machine 10 and the new girder 80 so as to balance the weight.

図１１の右側の状態に示すように、支承５０Ａを運搬する時には、支承５０Ａの状態を安定させるために固定鋼材２２Ｂが支承５０Ａの下部を仮固定しているが、図１１の左側の状態に示すように、支承５０Ａを下降させる時には、固定鋼材２２Ｂの仮固定を解除して、固定鋼材２２Ｂを手延べ機１０の幅方向の中央寄りにスライドさせて、下降させる支承５０Ａが固定鋼材２２Ｂに干渉しないようにする。 As shown in the state on the right side of FIG. 11, when the bearing 50A is transported, the fixed steel material 22B temporarily fixes the lower part of the bearing 50A in order to stabilize the state of the bearing 50A. As shown, when lowering the bearing 50A, the temporary fixing of the fixed steel material 22B is released, the fixed steel material 22B is slid toward the center in the width direction of the hand spreading machine 10, and the bearing 50A to be lowered becomes the fixed steel material 22B. Avoid interference.

また、本実施形態に係る送り出し架設工法において架設する新設桁８０は、橋脚Ｐ１と橋台Ａ１との間の径間に架設する単径間の桁であったが、本発明に係る送り出し架設工法を用いて架設できる桁は単径間の桁に限定されず、多径間にわたる桁も架設可能である。多径間にわたる桁を架設する場合は、橋脚Ｐ１のさらに先の橋脚（図示せず）の天端上に、前述したサポート部材１４と同様のサポート部材を設置して、前述した各工程と同様の工程を繰り返せばよい。 Further, the new girder 80 to be erected in the delivery erection method according to the present embodiment is a single-diameter girder erected between the span between the pier P1 and the abutment A1, but the delivery erection method according to the present invention can be used. The girders that can be erected using are not limited to single-diameter girders, and multi-diameter girders can also be erected. When erection of a girder over multiple spans, a support member similar to the support member 14 described above is installed on the top end of the pier (not shown) further ahead of the pier P1 and the same as each process described above. The process may be repeated.

（２）本発明の実施形態に係る手延べ機
本発明の実施形態に係る手延べ機１０は、前述したように、本発明の実施形態に係る送り出し架設工法に好適に使用可能な手延べ機である。 (2) Hand-rolling machine according to the embodiment of the present invention As described above, the hand-rolling machine 10 according to the embodiment of the present invention is a hand-rolling machine that can be suitably used for the delivery erection method according to the embodiment of the present invention. Is.

図１２は、本発明の実施形態に係る手延べ機１０を橋軸直角方向から見た側面図であり、図１３は、本発明の実施形態に係る手延べ機１０を上方から見た上面図である。ただし、図１３では、クレーン１２および軌条設備２０は描いていない。 FIG. 12 is a side view of the hand-rolling machine 10 according to the embodiment of the present invention as viewed from a direction perpendicular to the bridge axis, and FIG. 13 is a top view of the hand-rolling machine 10 according to the embodiment of the present invention as viewed from above. Is. However, in FIG. 13, the crane 12 and the rail equipment 20 are not drawn.

手延べ機１０の本体部１１は、図１２および図１３に示すように、２つのＩ形鋼１０Ａが平行に配置されていて、２つのＩ形鋼１０Ａの間をトラス１０Ｂが連結してなる構造であり、軽量で、かつ、高剛性な構造になっている。 As shown in FIGS. 12 and 13, the main body 11 of the hand-rolling machine 10 has two I-shaped steels 10A arranged in parallel, and a truss 10B is connected between the two I-shaped steels 10A. It has a structure that is lightweight and highly rigid.

手延べ機１０は、２つのＩ形鋼１０Ａのそれぞれの上フランジの上に軌条設備２０を備えており、前述したように、軌条設備２０の上を台車２２が走行できるようになっている。このため、外部から大型クレーンを使用しなくても、台車２２によって、資機材５０を手延べ機１０の先端部に運搬することができる。 The hand-rolling machine 10 is provided with rail equipment 20 on the upper flanges of each of the two I-shaped steels 10A, and as described above, the carriage 22 can travel on the rail equipment 20. Therefore, the equipment 50 can be transported to the tip of the hand-rolling machine 10 by the trolley 22 without using a large crane from the outside.

また、手延べ機１０の先端部の上部には、クレーン１２が設置されており、手延べ機１０の先端部（クレーン１２による作業可能領域内）に運搬された資機材５０は、クレーン１２によって橋脚Ｐ１の天端上に運搬することができる。また、前述したように、資機材５０のうち、支承５０Ａのように重量が大きく、手延べ機１０の先端部に設置したクレーン１２では、積み降ろすことが困難な資機材を積み降ろす場合には、台車２２に設けたチェーンブロック２４（図１１参照）を用いて、橋脚Ｐ１の天端に積み降ろす。 A crane 12 is installed above the tip of the hand-rolling machine 10, and the materials and equipment 50 transported to the tip of the hand-rolling machine 10 (within the workable area of the crane 12) are carried by the crane 12. It can be transported on the top of the pier P1. Further, as described above, among the materials and equipment 50, when the materials and equipment that are heavy like the bearing 50A and are difficult to be loaded and unloaded by the crane 12 installed at the tip of the hand-rolling machine 10 are to be loaded and unloaded. , The chain block 24 (see FIG. 11) provided on the bogie 22 is used to load and unload the bridge pier P1 at the top end.

したがって、手延べ機１０を用いることにより、外部から大型クレーンを使用しなくても、資機材５０を橋脚Ｐ１の天端に運搬することができる。 Therefore, by using the hand-rolling machine 10, the equipment and materials 50 can be transported to the top end of the pier P1 without using a large crane from the outside.

手延べ機１０の先端部の下部には、格納可能にサポート部材１４が備えられている。図１２は、サポート部材１４が鉛直状態になって、橋脚Ｐ１の天端から反力を受けている状態を示し、図１３は、サポート部材１４が、手延べ機１０の下部に格納された状態を示している。サポート部材１４は、ヒンジ部材１４Ａのピン支点を中心に回動して、手延べ機１０の長手方向と直交する面内を回動できるようになっており、下方からの反力を受けることができる鉛直状態になることができ、また、手延べ機１０の長手方向と直交する水平方向の横臥状態で、手延べ機１０の下部に格納できるようになっている。 A support member 14 is provided in the lower part of the tip of the hand-rolling machine 10 so as to be retractable. FIG. 12 shows a state in which the support member 14 is in a vertical state and receives a reaction force from the top end of the pier P1, and FIG. 13 shows a state in which the support member 14 is stored in the lower part of the hand-rolling machine 10. Is shown. The support member 14 can rotate about the pin fulcrum of the hinge member 14A and can rotate in a plane orthogonal to the longitudinal direction of the hand-rolling machine 10, and can receive a reaction force from below. It is possible to be in a vertical state where it can be formed, and it can be stored in the lower part of the hand-rolling machine 10 in a horizontal lying state orthogonal to the longitudinal direction of the hand-rolling machine 10.

したがって、手延べ機１０の先端部をサポート部材１４によって支持させること、および手延べ機１０の先端部へサポート部材１４を格納することを容易に行うことができる。 Therefore, it is possible to easily support the tip of the hand-rolling machine 10 by the support member 14 and to store the support member 14 in the tip of the hand-rolling machine 10.

即ち、図１２に示すように、サポート部材１４は、鉛直状態において、下端部が橋脚Ｐ１の天端上に保持されていて、該天端から上方に反力を受けている。また、サポート部材１４の上端部は、手延べ機１０の先端部の下部に設けられたヒンジ部材１４Ａに回動可能に連結されていて、サポート部材１４は、鉛直状態において、上端部が手延べ機１０の先端部をヒンジ部材１４Ａを介して下方から支持している。 That is, as shown in FIG. 12, in the vertical state, the lower end of the support member 14 is held on the top end of the pier P1 and receives a reaction force upward from the top end. Further, the upper end portion of the support member 14 is rotatably connected to a hinge member 14A provided below the tip end portion of the hand spreading machine 10, and the upper end portion of the support member 14 is extended by hand in a vertical state. The tip of the machine 10 is supported from below via the hinge member 14A.

また、図１４に示すように、手延べ機１０の先端部には、回動中心１０Ｄを中心にして水平面内を回動可能なアウトリガー１０Ｃを設けてもよい。前記「（１）本発明の実施形態に係る送り出し架設工法」で説明した実施形態では、支承５０Ａを橋脚Ｐ１の天端上に運搬して据え付けた後、手延べ機１０をセットバックして、ブラケット１６の上に設置したサポート部材１８で手延べ機１０の先端部を支持して、支承５０Ａ以外の資機材５０（送り出し装置および降下設備のための資機材５０Ｂ等）を橋脚Ｐ１の天端上に運搬して鋼製ジャッキベース３０を構築しているが、図１４に示すように、手延べ機１０の先端部にアウトリガー１０Ｃを設けることで、アウトリガー１０Ｃを適宜に回動させた状態で、当該アウトリガー１０Ｃをサポート部材で下方から支持させることにより、橋脚Ｐ１の天端上に設置するサポート部材の位置を適宜に変更することができ、手延べ機１０をセットバックさせて、ブラケット１６の上に設置したサポート部材１８で手延べ機１０の先端部を支持させなくても、サポート部材と干渉しないように資機材５０を橋脚Ｐ１の天端上に運搬して鋼製ジャッキベース３０を設置することができるようになる。 Further, as shown in FIG. 14, an outrigger 10C that can rotate in a horizontal plane around the rotation center 10D may be provided at the tip of the hand-rolling machine 10. In the embodiment described in the above-mentioned "(1) Delivery erection method according to the embodiment of the present invention", the bearing 50A is transported and installed on the top end of the pier P1, and then the hand-rolling machine 10 is set back. A support member 18 installed on the bracket 16 supports the tip of the hand-rolling machine 10, and materials and equipment 50 other than the bearing 50A (materials and equipment 50B for the delivery device and descent equipment, etc.) are attached to the top of the pier P1. The steel jack base 30 is constructed by transporting it upward, but as shown in FIG. 14, by providing the out-trigger 10C at the tip of the hand-rolling machine 10, the out-trigger 10C is appropriately rotated. By supporting the outrigger 10C from below with a support member, the position of the support member installed on the top end of the pier P1 can be appropriately changed, and the hand-rolling machine 10 is set back to set back the bracket 16. Even if the support member 18 installed above does not support the tip of the hand-rolling machine 10, the equipment 50 is transported onto the top end of the pier P1 so as not to interfere with the support member, and the steel jack base 30 is installed. You will be able to.

１０…手延べ機
１０Ａ…Ｉ形鋼
１０Ｂ…トラス
１０Ｃ…アウトリガー
１０Ｄ…回動中心
１１…本体部
１２…クレーン
１４、１８…サポート部材
１４Ａ…ヒンジ部材
１６…ブラケット
２０、９２…軌条設備
２２、９４…台車
２２Ａ…天井梁
２２Ｂ…固定鋼材
２４…チェーンブロック
３０…鋼製ジャッキベース
５０…資機材
５０Ａ…支承
５０Ｂ…送り出し装置および降下設備のための資機材
８０…新設桁
９０…隣接道路
９６…クレーン
Ａ１…橋台
Ｐ１…橋脚 10 ... Hand-rolling machine 10A ... I-shaped steel 10B ... Truss 10C ... Outrigger 10D ... Rotation center 11 ... Main body 12 ... Crane 14, 18 ... Support member 14A ... Hinge member 16 ... Bracket 20, 92 ... Rail equipment 22, 94 … Truss 22A… Ceiling beam 22B… Fixed steel material 24… Chain block 30… Steel jack base 50… Materials and equipment 50A… Support 50B… Materials and equipment for delivery equipment and descent equipment 80… New girder 90… Adjacent road 96… Crane A1 ... Hashidai P1 ... Bridge pier

Claims (12)

手延べ機を用いて新設桁を送り出して架設する送り出し架設工法であって、
前記手延べ機および前記新設桁を連結する連結工程と、
前記手延べ機および前記新設桁の上に、送り出し方向に軌条設備を設ける軌条設備設置工程と、
前記手延べ機の先端部に積み降ろし手段を設置する積み降ろし手段設置工程と、
前記手延べ機の先端部が前記新設桁の送り出し先の橋脚の上方に位置するまで、前記手延べ機および前記新設桁を送り出す送り出し工程と、
前記軌条設備を用いて前記橋脚の上方に資機材を運搬する運搬工程と、
前記積み降ろし手段を用いて、前記運搬工程で運搬した前記資機材を前記橋脚の天端に積み降ろす積み降ろし工程と、
を有し、前記運搬工程及び前記積み降ろし工程は、前記手延べ機が前記橋脚に下方から支持された状態で行うことを特徴とする送り出し架設工法。 It is a delivery erection method in which a new girder is sent out and erected using a hand-rolling machine.
A connecting process for connecting the hand-rolling machine and the new girder, and
The rail equipment installation process of installing rail equipment in the delivery direction on the hand-rolling machine and the new girder,
The loading / unloading means installation process of installing the loading / unloading means at the tip of the hand-rolling machine, and
The delivery process of feeding the hand-rolling machine and the new girder until the tip of the hand-rolling machine is located above the pier to which the new girder is fed.
A transportation process for transporting materials and equipment above the pier using the rail equipment,
A loading / unloading step of loading and unloading the materials and equipment transported in the transporting process on the top end of the pier using the loading / unloading means.
The delivery erection method, wherein the transportation step and the loading / unloading step are performed in a state where the hand-rolling machine is supported from below by the pier. 前記運搬工程及び前記積み降ろし工程において前記手延べ機が前記橋脚に下方から支持された前記状態は、前記橋脚が前記手延べ機の先端部の下方に位置していて、前記橋脚に一端部が保持されたサポート部材が、他端部で、前記手延べ機の先端部を下方から支持する状態であることを特徴とする請求項１に記載の送り出し架設工法。 In the state in which the hand-rolling machine is supported from below by the pier in the transporting step and the loading / unloading step, the pier is located below the tip of the hand-rolling machine, and one end of the pier is provided. The delivery erection method according to claim 1, wherein the held support member is in a state of supporting the tip end portion of the hand-rolling machine from below at the other end portion. 前記サポート部材は前記手延べ機の先端部に格納されており、該サポート部材を鉛直に立設する工程を備えることを特徴とする請求項２に記載の送り出し架設工法。 The delivery erection method according to claim 2, wherein the support member is stored in a tip end portion of the hand-rolling machine and includes a step of vertically erection of the support member. 前記運搬工程は、前記軌条設備の上に配置された台車を用いて、前記橋脚の上方に支承部材を運搬する第１運搬工程を含み、また、前記積み降ろし工程は、前記第１運搬工程で運搬された前記支承部材を、前記台車に備えられた前記積み降ろし手段としてのチェーンブロックを用いて、前記橋脚の天端に積み降ろす支承積み降ろし工程を含むことを特徴とする請求項２または３に記載の送り出し架設工法。 The transportation step includes a first transportation step of transporting a bearing member above the pier using a carriage arranged on the rail equipment, and the loading / unloading step is the first transportation step. 2 or 3 according to claim 2, further comprising a bearing loading / unloading step of loading / unloading the transported bearing member to the top end of the pier using a chain block as the loading / unloading means provided on the carriage. Sending erection method described in. 前記運搬工程は、前記軌条設備を用いて前記橋脚の上方に前記支承部材以外の資機材を運搬する第２運搬工程を含み、また、前記積み降ろし工程は、前記支承積み降ろし工程とは別に、前記橋脚の天端に、前記積み降ろし手段としてのクレーンにより前記支承部材以外の資機材を積み降ろすクレーン積み降ろし工程を含むことを特徴とする請求項４に記載の送り出し架設工法。 The transporting step includes a second transporting step of transporting materials and equipment other than the bearing members above the bridge pier using the rail equipment, and the loading / unloading step is separate from the bearing loading / unloading step. The delivery erection method according to claim 4, wherein a crane loading / unloading step of loading / unloading materials / equipment other than the bearing members by a crane as the loading / unloading means is included at the top end of the pier. 前記積み降ろし工程は、前記クレーン積み降ろし工程もしくは前記支承積み降ろし工程のいずれか一方の積み降ろし工程が行われた後、他方の積み降ろし工程で積み降ろしを行う前記積み降ろし手段による積み降ろしが可能な所定距離だけ前記手延べ機の送り出しもしくは引き戻しを行う手延べ機移動工程を含み、前記手延べ機移動工程で前記所定距離だけ送り出しもしくは引き戻した前記手延べ機の先端部は、前記一方の積み降ろし工程において前記手延べ機の先端部が前記橋脚に支持された状態となるようにするために前記サポート部材の一端部が保持されていた前記橋脚における第１位置とは異なる位置である前記橋脚における第２位置で保持されて前記橋脚に下方から支持された状態で、前記第１運搬工程及び前記第２運搬工程のうち後に行われる運搬工程及び前記他方の積み降ろし工程を行うことを特徴とする請求項５に記載の送り出し架設工法。 The loading / unloading step can be carried out by the loading / unloading means in which one of the crane loading / unloading step and the support loading / unloading step is performed and then the other loading / unloading step is performed. The tip of the hand-rolling machine, which includes a hand-rolling machine moving step of sending out or pulling back the hand-rolling machine by a predetermined distance, and feeding or pulling back by the predetermined distance in the hand-rolling machine moving step, is a stack of one of the above. The bridge pedestal is at a position different from the first position in the pier where one end of the support member is held so that the tip end portion of the hand-rolling machine is supported by the pier in the unloading step. In a state of being held at the second position in the above and supported from below by the bridge pier, the first transportation step and the second transportation step, which are later performed, and the other loading / unloading process are performed. The delivery erection method according to claim 5. 前記一方の積み降ろし工程は、前記支承積み降ろし工程であり、前記第１運搬工程及び前記第２運搬工程のうち先に行われる運搬工程は前記第１運搬工程であることを特徴とする請求項６に記載の送り出し架設工法。 The claim is characterized in that one of the loading and unloading steps is the bearing loading and unloading step, and the first transporting step of the first transporting step and the second transporting step is the first transporting step. The delivery erection method according to 6. 前記橋脚における前記第１位置は前記橋脚の天端上にあり、前記橋脚における前記第２位置は、前記橋脚の側面に取り付けられたブラケット上にあることを特徴とする請求項６または７に記載の送り出し架設工法。 The sixth or seventh aspect of the present invention, wherein the first position on the pier is on the top end of the pier, and the second position on the pier is on a bracket attached to the side surface of the pier. Sending erection method. 前記サポート部材が下方から支持する前記手延べ機の先端部は、水平面内を回動可能であり、
前記手延べ機の前記先端部が水平面内を回動することにより、前記サポート部材は、前記手延べ機の下方に位置する前記橋脚への設置位置を変更可能であることを特徴とする請求項２〜８のいずれかに記載の送り出し架設工法。 The tip of the hand-rolling machine supported by the support member from below is rotatable in a horizontal plane.
The claim is characterized in that the support member can change the installation position on the pier located below the hand-rolling machine by rotating the tip end portion of the hand-rolling machine in a horizontal plane. The delivery erection method according to any one of 2 to 8. 新設桁の先端に取り付けられて、該新設桁の送り出し架設に用いる手延べ機であって、
送り出し方向に形成された、資機材を運搬するために用いられる軌条設備と、
先端部に設けられ、下方に位置する橋脚からの反力を受けるためのサポート部材と、 を備えていることを特徴とする手延べ機。 It is a hand-rolling machine attached to the tip of the new girder and used for the delivery erection of the new girder.
Rail equipment formed in the delivery direction and used to transport materials and equipment,
A hand-rolling machine that is provided at the tip and is equipped with a support member for receiving the reaction force from the pier located below. 前記サポート部材は、前記手延べ機の先端部に格納可能であることを特徴とする請求項１０に記載の手延べ機。 The hand-rolling machine according to claim 10, wherein the support member can be stored in a tip end portion of the hand-rolling machine. 前記手延べ機の先端部に軸支され、水平面内を回動可能な回動部であって、該回動部は第２のサポート部材によって支持され、前記回動部の回動により前記第２のサポート部材による前記手延べ機の先端部の支持位置が変更可能であることを特徴とする請求項１０または１１に記載の手延べ機。 A rotating portion that is pivotally supported by the tip of the hand-rolling machine and can rotate in a horizontal plane. The rotating portion is supported by a second support member, and the rotation of the rotating portion causes the first The hand-rolling machine according to claim 10 or 11, wherein the support position of the tip end portion of the hand-rolling machine can be changed by the support member of 2.
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JP2022079157A (en) * 2020-11-16 2022-05-26 株式会社駒井ハルテック Bridge erection method and launching machine for bridge erection
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