JP2006028881A - Self-propelled pc floor slab erecting machine and pc floor slab erecting method - Google Patents

Self-propelled pc floor slab erecting machine and pc floor slab erecting method Download PDF

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JP2006028881A
JP2006028881A JP2004209092A JP2004209092A JP2006028881A JP 2006028881 A JP2006028881 A JP 2006028881A JP 2004209092 A JP2004209092 A JP 2004209092A JP 2004209092 A JP2004209092 A JP 2004209092A JP 2006028881 A JP2006028881 A JP 2006028881A
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floor slab
frame
leg
rail
type
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Takashi Shimizu
孝 清水
Yukinori Haraguchi
幸徳 原口
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Oriental Construction Co Ltd
オリエンタル建設株式会社
Mitsui Miike Mach Co Ltd
株式会社三井三池製作所
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<P>PROBLEM TO BE SOLVED: To provide a self-propelled PC floor slab erecting machine which is mechanized so as to efficiently set PC floor slabs, and to provide a PC floor slab erecting method. <P>SOLUTION: According to the structure of the self-propelled PC floor slab erecting machine, a frame-type front leg 2 and a frame-type rear leg 3 are arranged in an intermediate area of a girder 1 across an interval, and upper portions of the frame-type front leg 2 and the frame-type rear leg 3 which are each provided with erecting machine elevating jacks 7, are fixed to the intermediate area. The girder 1 is provided with traveling rails 10, along which a traveling trolley having a hanging device 18 and a rotary section 17 hanging from a lower portion thereof, travels. Then one side supporting rail 24 and the other side supporting rail 24 overhang outward are provided on both left and right sides of the frame-type front leg 2 and the frame-type rear leg 3, and one side protective scaffold-cum-timbering device 34a extending along the one side support rails 24 and the other side protective scaffold-cum-timbering device 34 extending along the other side support rails 24 are arranged so as to enclose steel girders 37 in a manner capable of approaching/separating from each other. The PC floor slab erecting method is for use in efficiently erecting the PC floor slab by using the erecting machine. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、鋼桁等の桁上にPC(プレキャストコンクリート)床版を架設するための自走式PC床版架設機およびPC床版の架設工法に関する。   The present invention relates to a self-propelled PC slab erection machine and a PC slab erection method for laying a PC (precast concrete) slab on a girder such as a steel girder.
従来、鋼桁にPC床版を設置する方法としては、トラッククレーンでPC床版を架設するか、小型の架設機を用いて1枚ずつ架設していた。(例えば、特許文献1,2参照)
特開2003−74018号公報 特開平6−306819号公報
Conventionally, as a method of installing PC floor slabs on steel girders, PC floor slabs have been erected with a truck crane, or one by one using a small erection machine. (For example, see Patent Documents 1 and 2)
Japanese Patent Laid-Open No. 2003-74018 Japanese Patent Laid-Open No. 6-306819
従来の方法では、PC床版の設置作業効率が悪くコストアツプにつながる。また、新線を市街地で構築する場合、周りの既設道路を使う事も制限される場合が多く、夜間において、限られた空間と時間内では長期間を要していた。
また、PC床版の間に現場打ちの床版がある場合、その部分の型枠、足場、養生設備を別に準備しなければならなかった。
都市および市街地内の街路と並行もしくは立体交差している橋梁の床版工事を行う場合に、街路の安全確保のために防護足場を設置するとともに、床版施工用の重機等の使用のため、街路の交通を阻害することになる課題がある。
In the conventional method, the installation work efficiency of the PC floor slab is poor, leading to a cost increase. In addition, when building a new line in an urban area, the use of existing roads around is often restricted, and at night, a limited space and a long time are required.
In addition, when there is a floor slab placed between the PC slabs, it was necessary to prepare the formwork, scaffolding, and curing equipment for that part separately.
When building floor slabs for bridges that are parallel or three-dimensionally intersecting with cities and streets in urban areas, in addition to installing protective scaffolding to ensure street safety, and to use heavy machinery for floor slab construction, There is a problem that will obstruct street traffic.
本発明は、PC床版を効率よく設置することができ、床版の幅員変化に対応して対向する防護足場間隔を狭くしたり広げたり変化させることができ、街路の安全を確保するとともに交通阻害をほとんど必要としない機械化したPC床版架設機およびPC床版の架設工法を提供することを目的とする。   The present invention can efficiently install a PC floor slab, and can reduce or widen the distance between opposing protective scaffolds in response to changes in the width of the floor slab, ensuring street safety and traffic. It is an object of the present invention to provide a mechanized PC slab erection machine and a PC slab erection method that require little obstruction.
前記の課題を有利に解決するために、第1発明の自走式PC床版架設機においては、桁上にPC床版を架設する自走式PC床版架設機において、前後方向に延長するガーダの中間部に、枠内側が開放された枠型前部脚および枠型後部脚が間隔をおいて配置されると共に前記枠型前部脚および枠型後部脚の上部が固定され、枠型前部脚および枠型後部脚には架設機昇降用ジャッキを備え、前記ガーダには前後方向に延長する走行用レールが枠型前部脚内および枠型後部脚内を通るように設けられ、前記走行用レールに、下部に旋回部を有する走行用トロリが走行可能に設けられ、前記旋回部に吊り装置が設けられていることを特徴とする。   In order to solve the above-mentioned problem advantageously, in the self-propelled PC floor slab erection machine of the first invention, in the self-propelled PC floor slab erection machine in which the PC floor slab is erected on the beam, it is extended in the front-rear direction. A frame-type front leg and a frame-type rear leg that are open on the inner side of the frame are arranged at intervals in the middle part of the girder, and the upper parts of the frame-type front leg and the frame-type rear leg are fixed. The front leg and the frame type rear leg are provided with jacks for raising and lowering the construction machine, and the girder is provided with running rails extending in the front-rear direction so as to pass through the frame type front leg and the frame type rear leg, The traveling rail is provided with a traveling trolley having a swivel portion at a lower portion thereof so as to be able to travel, and a suspension device is provided at the swivel portion.
また、第2発明では、第1発明の自走式PC床版架設機において、枠型前部脚および枠型後部脚の左右両側にそれぞれ外側に張り出す一側部支持レールと他側部支持レールが設けられ、各一側部支持レールにそれぞれ支持される横行用トロリに渡って設けられた一側部防護足場兼支保工装置と、各他側部支持レールに支持される横行用トロリに渡って設けられた他側部防護足場兼支保工装置とが、桁を囲むように相互に接近および離反移動可能に構成されていることを特徴とする。   Further, in the second invention, in the self-propelled PC floor slab erection machine according to the first invention, the one side support rail and the other side support projecting outward on the left and right sides of the frame type front leg and the frame type rear leg, respectively. A rail is provided, and a traverse trolley supported on each side support rail and a traverse trolley supported on each other side support rail. The other side protection scaffolding / supporting device provided across is configured so as to be movable toward and away from each other so as to surround the beam.
また、第3発明のPC床版の架設工法においては、第1発明または第2発明の自走式PC床版架設機を使用して、自走式PC床版架設機をジャッキアップして前部レールから前部走行車輪を浮かせ、その前部レールの前部を前方にかつ前部レールの後端部を前部走行車輪の下に搬送移動して桁上に敷設し、前部レールを取り除いた区間の桁上にPC床版を架設した後、既設の床版上レールに接続するように前記PC床版上に新設の床版上レールを設け、次いで前部レールおよび床版上レールを利用して自走式PC床版架設機を次にPC床版を架設する区間に移動させる工程を繰り返すことを特徴とする。   Further, in the PC floor slab erection method of the third invention, the self-propelled PC floor slab erection machine of the first invention or the second invention is used to jack up the self-propelled PC slab erection machine. The front traveling wheel is lifted from the front rail, the front part of the front rail is moved forward and the rear end of the front rail is transported and moved under the front traveling wheel, and the front rail is laid on the girder. After laying the PC floor slab on the girders of the removed section, a new floor slab upper rail is provided on the PC floor slab so as to be connected to the existing floor slab upper rail, and then the front rail and the floor slab upper rail The process of moving the self-propelled PC floor slab erection machine to the section where the PC floor slab is erected next is repeated.
第1発明の自走式PC床版架設機によると、枠内側が開放された枠型前部脚と枠型後部脚とをガーダの中間部に間隔をおいて前後の各枠型脚の上部を固定することにより、枠型前部脚と枠型後部脚との間の側方が開放されてPC床版を旋回可能な空間を確保することができ、ガーダに設けられた走行用レールに沿って走行する走行用トロリの旋回台に設けられた吊り装置を利用して、橋軸方向に短く橋軸直角方向に長いPC床版を橋軸方向に長い方を向けて前後の枠型脚間まで吊り下げ搬送した後、旋回回動して橋幅員方向に容易にPC床版を旋回回動して向きを直して設置することができる。
そのため、高架桁側部の狭い下部側道からPC床版を吊り上げることなく、自走式PC床版架設機から離れた後方の交通障害の少ない広い高架桁側部の側道または交通障害にならない径間の間からPC床版を適宜台車により自走式PC床版架設機の後部に搬送して、PC床版架設機によりPC床版を容易に鋼桁上に設置することができ、昼夜を問わず鋼桁上の高所においてPC床版の搬送・設置作業をすることができるので、PC床版の設置を効率よく短工期で経済的に施工することができる。
According to the self-propelled PC floor slab erection machine of the first invention, the upper part of each of the front and rear frame-type legs with the frame-type front leg and the frame-type rear leg opened inside the frame spaced apart from the middle part of the girder Can secure a space where the side of the frame-type front leg and the frame-type rear leg can be opened to turn the PC floor slab. Using the suspension device provided on the swivel of the traveling trolley that runs along, the PC floor slab that is short in the direction of the bridge axis and long in the direction perpendicular to the bridge axis faces the long side in the direction of the bridge axis, and the front and rear frame legs After being suspended and conveyed between the two, the PC floor slab can be easily rotated and rotated in the direction of the width of the bridge to be installed with its orientation corrected.
Therefore, without lifting the PC floor slab from the narrow lower side road on the side of the elevated girder, it does not become a side road on the side of the wide elevated girder or traffic that is less behind the self-propelled PC floor slab erection machine. The PC floor slab can be transported to the rear part of the self-propelled PC floor slab erection machine with a dolly from the span, and the PC floor slab can be easily installed on the steel girder by day and night. Since the PC floor slab can be transported and installed at a high place on the steel girder, the installation of the PC floor slab can be carried out efficiently in a short construction period and economically.
第2発明によると、本発明の自走式PC床版架設機は、一側部防護足場兼支保工装置と他側部防護足場兼支保工装置とが、鋼桁を囲むように相互に接近および離反移動可能に構成されているため、並行する鋼桁間の間隔(PC床版の幅員変化)に応じて、一側部防護足場兼支保工装置と他側部防護足場兼支保工装置とを接近または離反させて防護足場およびその足場を利用した支保工を容易に配置することができ、作業者の安全を確保しながら街路の安全を確保することができ、しかも足場を含めてPC床版架設機全体を機械化することができる。   According to the second invention, the self-propelled PC floor slab erection machine according to the present invention is such that the one-side protective scaffolding / supporting device and the other-side protective scaffolding / supporting device are close to each other so as to surround the steel girder. Because it is configured to move away from each other, depending on the interval between parallel steel girders (change in width of PC slab), one side protection scaffolding / supporting device and the other side protection scaffolding / supporting device It is possible to easily arrange the protective scaffold and the support work using the scaffold by approaching or leaving the platform, ensuring the safety of the street while ensuring the safety of the worker, and also including the scaffolding on the PC floor The entire plate laying machine can be mechanized.
第3発明によると、第1発明または第2発明の自走式PC床版架設機を使用して、狭い桁上でも効率よく容易に桁上にPC床版を架設することができ、また、自走式PC床版架設機を容易に次にPC床版を架設する桁上の区間に移動させることができる。
According to the third invention, the self-propelled PC floor slab erection machine according to the first or second invention can be used to efficiently and easily lay a PC floor slab on a narrow beam, The self-propelled PC slab erection machine can be easily moved to the section on the girder where the PC slab is installed next.
まず、図1〜図5を参照して本発明の一実施形態の自走式PC床版架設機の構造について説明する。   First, with reference to FIGS. 1-5, the structure of the self-propelled PC floor slab erection machine of one Embodiment of this invention is demonstrated.
前後方向に延長する鋼製トラスガーダ1は、2径間よりも長く設定され、前後方向に延長するトラスガーダ1の中間部に、枠型前部脚2と枠型後部脚3とがほぼ一径間の間隔と同じ長い配置間隔で配置され、鋼製ロ字状の枠型前部脚2における上部横杆4の中間部が溶接等により固定され、また、鋼製ロ字状の枠型後部脚3の上部横杆4の中間部が固定され、各枠型前部脚2および枠型後部脚3は鋼製ロ字状の枠型フレームとされ枠内を開放空間とし、PC床版の搬送・旋回あるいはレールの搬送を可能にしている。前記の枠型前部脚2および枠型後部脚3は少なくともPC床版旋回可能な間隔をおいて配置される。   The steel truss girder 1 extending in the front-rear direction is set to be longer than the distance between two diameters, and the frame-type front leg 2 and the frame-type rear leg 3 are approximately one diameter in the middle of the truss girder 1 extending in the front-rear direction. The middle part of the upper horizontal bar 4 in the steel-shaped frame-shaped front leg 2 is fixed by welding or the like, and the steel-shaped frame-shaped rear leg. 3 is fixed, and each frame-type front leg 2 and frame-type rear leg 3 are formed into a steel-shaped frame-shaped frame, and the inside of the frame is an open space to carry the PC floor slab.・ Swivel or rail transport is possible. The frame-type front leg 2 and the frame-type rear leg 3 are arranged at least at intervals that allow the PC floor slab to turn.
各枠型前部脚2および枠型後部脚3の下部には、左右方向に間隔をおいて走行用車輪5を備えていると共にこれを保持する車輪支持部にはレール側面に係合するガイドローラ6を備え(図4参照)、かつ枠型前部脚2の左右両側にはそれぞれ架設機昇降用ジャッキ7を備えている。枠型後部脚3に設けられている走行用車輪5は、図示の形態では、架設されたPC床版8上に設置された床版上レール9を走行し、空気圧式ゴムタイヤ製の走行用車輪5とされている。また、枠型前部脚2に設けられた走行用車輪5は、ゴム製の車輪とされ、桁37上に架設された前部レール40上を走行する形式とされている。   The lower part of each frame-type front leg 2 and frame-type rear leg 3 is provided with traveling wheels 5 spaced apart in the left-right direction, and a wheel support portion that holds the guides engages with the rail side surface. A roller 6 is provided (see FIG. 4), and a frame raising / lowering jack 7 is provided on each of the left and right sides of the frame-type front leg 2. In the illustrated embodiment, the traveling wheels 5 provided on the frame-type rear legs 3 travel on a floor slab upper rail 9 installed on a PC floor slab 8 installed, and are traveling wheels made of pneumatic rubber tires. It is set to 5. Further, the traveling wheels 5 provided on the frame-type front legs 2 are rubber wheels, and are configured to travel on the front rails 40 installed on the girders 37.
さらに、図3,図5に示すように、前記トラスガーダ1の前後両側には、ほぼトラスガーダ1の全長にわたって前後方向に延長するように左右両側に走行用レール10が設けられ、その左右両側の走行用レール10には、トロリフレームの上部の前後の左右両側に前後方向に間隔をおいてそれぞれ走行車輪11を有する自走式トロリ12が前後方向に走行可能に吊り下げ支持されて、トラスガーダ1の前後方向の全長にわたり走行可能とされている。   Further, as shown in FIGS. 3 and 5, traveling rails 10 are provided on both the left and right sides of the truss girder 1 so as to extend in the front-rear direction substantially over the entire length of the truss girder 1. A self-propelled trolley 12 having traveling wheels 11 spaced from each other in the front-rear direction on both the front and rear sides of the upper part of the trolley frame is suspended and supported on the rail 10 so as to be able to travel in the front-rear direction. It can run over the entire length in the front-rear direction.
また、1台の自走式トロリ12が前記一対の走行用レール10に支持され、前記自走式トロリ12の左右方向の寸法は、各枠型前部脚2および枠型後部脚3の左右の縦枠13の内側間隔よりも小さく設定されており、したがって、1台の自走式トロリ12は、ほぼトラスガーダ1の前後方向の全長にわたって走行可能に構成されている。   One self-propelled trolley 12 is supported by the pair of traveling rails 10, and the dimensions of the self-propelled trolley 12 in the left-right direction are the left and right dimensions of each frame-type front leg 2 and frame-type rear leg 3. Therefore, one self-propelled trolley 12 is configured to be able to travel substantially over the entire length in the front-rear direction of the truss girder 1.
前記走行用トロリ12のフレーム14の下部には、旋回支持台15の上部が固定され、その旋回支持台15の下部には、環状外歯16を有する旋回台17が旋回可能に支持され、図示省略の駆動装置により旋回される環状外歯16の縦中心軸線を中心として旋回可能に支持されている。例えば、前記旋回支持台15側に設けられた駆動装置(図示省略)の出力軸に固定の駆動歯車が前記環状外歯車16に噛み合わされて、前記旋回台17は正旋回または逆旋回可能に構成されている。   An upper part of a swivel support base 15 is fixed to a lower part of the frame 14 of the traveling trolley 12, and a swivel base 17 having an annular external tooth 16 is supported on the lower part of the swivel support base 15 so as to be turnable. The annular outer teeth 16 that are swung by an omitted drive device are supported so as to be pivotable about the longitudinal center axis. For example, a driving gear fixed to an output shaft of a driving device (not shown) provided on the swivel support base 15 side is meshed with the annular external gear 16 so that the swivel base 17 can be rotated forward or backward. Has been.
前記のトラスガーダ1,各枠型前部脚2および枠型後部脚3並びにこれらの車輪5,架設機昇降用ジャッキ7および自走式トロリ12並びに吊り装置18等により自走式PC床版架設機39が構成されている。   Self-propelled PC floor slab erection machine by means of the truss girder 1, each frame type front leg 2 and frame type rear leg 3 and their wheels 5, erection jack elevating jack 7, self-propelled trolley 12, suspension device 18, etc. 39 is configured.
前記の旋回台17の下部には吊り装置18が設けられている。図示の形態の吊り装置18では、前記旋回台17に設けられた吊り杆19に、電気チェーンブロック20の上部(例えば、上部フックあるいは上部環状部)が吊り下げ係止されて、前記電気チェーンブロック20は、旋回台17の旋回により旋回可能に構成されている。   A suspension device 18 is provided below the swivel base 17. In the suspension device 18 of the illustrated form, the upper part (for example, the upper hook or the upper annular portion) of the electric chain block 20 is suspended and locked to the suspension rod 19 provided on the swivel base 17, and the electric chain block. 20 is configured to be turnable by turning of the turntable 17.
したがって、旋回台17の旋回により前記電気チェーンブロック20は旋回され、電気チェーンブロック20から繰り出されるリンクチェーンの下フック21に吊り下げ条体22を介して吊り下げ支持される新設のPC床版8を、例えば90度等適宜の角度、回動することができる。   Therefore, the electric chain block 20 is turned by the turning of the turntable 17, and the new PC floor slab 8 is supported by being suspended from the lower hook 21 of the link chain fed out from the electric chain block 20 via the suspension strip 22. Can be rotated at an appropriate angle such as 90 degrees.
このように構成しているので、橋軸方向の巾が短く、かつ橋軸直角方向の長さ寸法の長い新設のPC床版8を、橋軸直角方向の長い部分を橋軸方向に向いた状態で、既設側の床版上レール9上を走行する運搬台車23によりトラスガーダー1の走行用レール10直下まで搬送し、運搬台車23上の前記PC床版8を、自走式トロリ12の下部の吊り装置18により吊り上げると共にPC床版8をその姿勢の状態で橋軸方向に吊り下げ搬送して、枠型後部脚3と枠型前部脚2との間にPC床版8が位置するように搬送し、前記旋回台17を90度旋回させることで、PC床版8を90度回動させて所定の配置姿勢にすることができ、その状態で設置位置まで搬送し、吊り降ろして所定の設置位置に設置することができる。   Because of this construction, the new PC floor slab 8 with a short width in the bridge axis direction and a long length in the direction perpendicular to the bridge axis is oriented with the long part in the direction perpendicular to the bridge axis directed in the bridge axis direction. In the state, it is transported to just below the traveling rail 10 of the truss girder 1 by the transport carriage 23 traveling on the existing floor slab upper rail 9, and the PC floor slab 8 on the transport carriage 23 is transferred to the self-propelled trolley 12. The PC floor slab 8 is lifted by the lower suspension device 18 and suspended and conveyed in the bridge axis direction in the posture state, and the PC floor slab 8 is positioned between the frame-type rear leg 3 and the frame-type front leg 2. By rotating the swivel base 17 by 90 degrees, the PC floor slab 8 can be rotated 90 degrees to a predetermined arrangement posture, and in that state, it can be conveyed to the installation position and suspended. Can be installed at a predetermined installation position.
なお、PC床版8の設置位置が、枠型後部脚3と枠型前部脚2とのほぼ中央部付近の位置では、その位置で前記旋回台17を90度旋回させ、吊り降ろして所定の位置に設置すればよく、PC床版を旋回する位置は、適宜、設置場所に応じて、枠型後部脚3と枠型前部脚2間で行なえばよい。   In addition, when the installation position of the PC floor slab 8 is a position near the center of the frame-type rear leg 3 and the frame-type front leg 2, the swivel base 17 is turned 90 degrees at that position and hung down to be predetermined. The position for turning the PC floor slab may be appropriately set between the frame-type rear leg 3 and the frame-type front leg 2 depending on the installation location.
図示の形態では、枠型後部脚3の左右の縦枠13の間隔が、設置される状態におけるPC床版8の橋軸直角方向(左右方向)の寸法よりも狭い間隔とされ、かつ、PC床版8の橋軸方向の寸法は、枠型後部脚3の左右の縦枠13間の間隔よりも短い寸法とされているため、前記のように、全てのPC床版8を90度旋回して設置するようにしている。   In the illustrated form, the distance between the left and right vertical frames 13 of the frame-type rear leg 3 is smaller than the dimension in the direction perpendicular to the bridge axis (left and right direction) of the PC floor slab 8 in the installed state, and the PC Since the size of the floor slab 8 in the bridge axis direction is shorter than the distance between the left and right vertical frames 13 of the frame-type rear leg 3, as described above, all the PC slabs 8 are turned 90 degrees. To install.
各枠型後部脚3および枠型前部脚2の下部には、それぞれ左右方向の横方向外側に張り出すHビームからなる一側部支持レール24aと他側部支持レール24bの基端部が固定されて横行用レールが形成されると共に、前記各一側部支持レール24aと他側部支持レール24bの中間部と各縦枠13の中間部とは斜材により連結されて、前記各一側部支持レール24aと他側部支持レール24bとの横行用レールは支持されている。   At the bottom of each frame-type rear leg 3 and frame-type front leg 2, there are base end portions of one side support rail 24a and other side support rail 24b made of an H beam projecting laterally laterally outward. A transverse rail is formed by being fixed, and an intermediate portion of each one side support rail 24a and the other side support rail 24b and an intermediate portion of each vertical frame 13 are connected by an oblique material, The traverse rails of the side support rail 24a and the other side support rail 24b are supported.
左右方向に間隔をおく一側部側および他側部側の各支持レール24には、自走式等の横行用トロリ25が左右方向の位置調整可能に架設され、左右方向の一方における前部側および後部側の各横行用トロリ25における各フレーム26の外側下部(桁に離反する外側下部)にわたって、前後方向にほぼ一径間にわたって延長する防護足場フレーム27aの上部が溶接またはボルト等の固定手段により取付けられ、また、左右方向の他方における前部側および後部側の各トロリフレーム26の外側下部(桁に離反する外側下部)にわたって前後方向にほぼ一径間にわたって延長する防護足場フレーム27bの上部が溶接またはボルト等の固定手段により取付けられている。   A self-propelled traversing trolley 25 is installed on each of the support rails 24 spaced apart in the left-right direction so as to be adjustable in the left-right direction. The upper part of the protective scaffold frame 27a extending substantially over one diameter in the front-rear direction over the outer lower part (outer lower part separated from the girder) of each frame 26 in the lateral and rear side trolleys 25 is fixed by welding or bolts. Of the protective scaffold frame 27b that is attached by means and extends substantially over one diameter in the front-rear direction over the outer lower portion (outer lower portion that is separated from the girder) of the front and rear trolley frames 26 on the other side in the left-right direction. The upper part is attached by fixing means such as welding or bolts.
左右の各防護足場フレーム27a,bの下部には、それぞれ防護足場フレーム27a,bの前後方向の全長にわたって設けられ、かつ桁側に向かって内向きに張り出す水平な固定足場板28の基端部が固定されている。また、図示を省略するが、前記の防護足場フレーム27の外側面には、縦防護用ネット29が張設される。   The bottom ends of the left and right protective scaffold frames 27a and 27b are respectively provided over the entire length of the protective scaffold frames 27a and 27b in the front-rear direction, and the base ends of the horizontal fixed scaffold plates 28 projecting inward toward the spar. The part is fixed. Although not shown, a vertical protection net 29 is stretched on the outer surface of the protective scaffold frame 27.
前記の自走式等の横行用トロリ25の左右方向の位置調整は、図示省略の横行駆動装置に付属するブレーキシュウによって一時的に固定した状態で、横行用トロリフレーム26と一側部支持レール(または他側部支持レール)24の横行用レールとに孔を設けて、ピンまたはボルト・ナット等の着脱可能な位置固定金具により前後方向に位置調整可能に構成される。   The lateral adjustment of the self-propelled traversing trolley 25 is performed by temporarily fixing the traversing trolley frame 26 and one side support rail with a brake shoe attached to a traversing drive (not shown). (Or the other side support rail) 24 is provided with a hole in the traversing rail so that the position can be adjusted in the front-rear direction by a detachable position fixing bracket such as a pin, bolt or nut.
前記各固定足場板28の桁側に向かう内側下部には、防護用ネット支持部材30が縦軸31を中心として、ロータリアクチエータ等の旋回駆動装置32により旋回位置調整可能に回動可能に取付けられている。左右方向の一方側の各防護用ネット支持部材30aにおける水平な旋回回動用横杆38にわたって防護用ネット33aが張設されると共に前記各防護用ネット支持部材30に取付けられ、また、左右方向の他方側の各防護用ネット支持部材30にわたって防護用ネット33bが張設されていると共に取付けられて、防護用ネット33a,33bは各防護用ネット支持部材30a(30b)により支持されている。   A protective net support member 30 is pivotally attached to the lower part of each fixed scaffold plate 28 toward the spar side so that the turning position can be adjusted by a turning drive device 32 such as a rotary reactor about a longitudinal axis 31. It has been. A protective net 33a is stretched over and attached to each of the protective net support members 30 over the horizontal pivoting horizontal bar 38 of each protective net support member 30a on one side in the left-right direction. A protective net 33b is stretched and attached over each protective net support member 30 on the other side, and the protective nets 33a and 33b are supported by the protective net support members 30a (30b).
左右方向の一方の一側部支持レール(横行用レール)24aと各横行用トロリ25と防護足場フレーム27aと固定足場板28と防護用ネット支持部材30および防護用ネット29,33aにより、左右方向に移動可能な一方の防護足場装置が構成され、その防護足場装置に図示を省略するが傾倒可能な伸縮式支柱等の支保工が各固定足場板28等に付属されて防護足場兼支保工装置34aが構成され、また、左右方向他方側の他側部支持レール(横行用レール)24と各横行用トロリ25と防護足場フレーム27と固定足場板28と防護用ネット支持部材30および防護用ネット29,33により、左右方向に移動可能な他方の防護足場装置が構成され、その防護足場装置に図示を省略するが傾倒可能な伸縮式支柱等の支保工が足場等に付属されて防護足場兼支保工装置34bが構成されている。なおまた、図示を省略するが、各防護足場兼支保工装置34a,34bにおける旋回回動用横杆38に支持させるように伸縮式支柱などの着脱可能な支保工を立設させて型枠を突っ張り支持させるようにすることもできる。   One lateral support rail (transverse rail) 24a in the left-right direction, each traverse trolley 25, a protective scaffold frame 27a, a fixed scaffold plate 28, a protective net support member 30 and protective nets 29, 33a One protective scaffolding device that can be moved is constructed, and a supporting scaffold such as a telescopic column that can be tilted is attached to each fixed scaffolding plate 28 and the like, although not shown in the protective scaffolding device, and the protective scaffolding / supporting device 34a is formed, and the other side support rail (traversing rail) 24 on the other side in the left-right direction, each traversing trolley 25, the protective scaffold frame 27, the fixed scaffold plate 28, the protective net support member 30, and the protective net 29, 33 constitutes the other protective scaffolding device that can move in the left-right direction, and the protective scaffolding device is not shown in the figure but is attached to the scaffolding, such as a tiltable telescopic support. It has been protected scaffolding and shoring device 34b is configured. Although not shown in the figure, a detachable support such as a telescopic support is erected so as to be supported by the turning and swinging lever 38 in each of the protective scaffolding / supporting devices 34a and 34b. It can also be made to support.
左右方向の一方および他方の各防護足場兼支保工装置34a,bが左右方向に移動可能にされている構成により、高架橋骨組みにおける橋軸方向に並行する橋軸直角方向の桁37の間隔が変化しても、あるいは前記桁37に取付けられる橋軸直角方向に張り出す片持ち式支持梁35の張り出し寸法が変化しても対応可能に構成されている。例えば、橋脚36上に2列に並行する鋼桁間隔が広幅とされた場合には、図5に示すように、前記各桁37および片持ち式支持梁35の側部近傍に、足場および防護用ネットを配設したり、狭巾に対しては、図3に示すように、前記各桁37および片持ち式支持梁35の側方および下方全体を囲むように防護足場を形成することができる。
このようにして、防護足場を有する自走式PC床版架設機39が構成されている。
Due to the configuration in which one and the other protective scaffolding / supporting devices 34a and 34b in the left and right direction are movable in the left and right direction, the distance between the beams 37 in the direction perpendicular to the bridge axis parallel to the bridge axis direction in the viaduct frame changes. Even if the projecting dimension of the cantilever support beam 35 projecting in the direction perpendicular to the bridge axis attached to the girder 37 is changed, it can be coped with. For example, when the distance between the steel girders parallel to the two rows on the bridge pier 36 is wide, as shown in FIG. As shown in FIG. 3, a protective scaffold may be formed so as to surround each side 37 and the entire side of the cantilevered support beam 35 and the entire lower side thereof. it can.
In this way, a self-propelled PC floor slab erection machine 39 having a protective scaffolding is configured.
なお、図示を省略するが、前記実施形態の自走式PC床版架設機に型枠板あるいは養生設備(図示省略)を固定足場板28に配置して付属させておくことができる。このようにしておくと、PC床版8を架設しない橋軸方向端部の場所打ち床版部では、前記の自走式PC床版架設機により、橋軸直角方向に配置する型枠板を支持して場所打ちコンクリートを打設し、養生硬化させて場所打ち床版を構築する場合に有利である。   In addition, although illustration is abbreviate | omitted, the formwork board or curing equipment (illustration omitted) can be arrange | positioned and attached to the fixed scaffold board 28 to the self-propelled PC floor slab erection machine of the said embodiment. In this way, in the cast-in-place slab part at the end of the bridge axis direction where the PC floor slab 8 is not installed, the above-mentioned self-propelled PC floor slab erection machine is used to form a mold plate arranged in a direction perpendicular to the bridge axis. This is advantageous when cast-in-place concrete is cast in support and cured and cured to construct a cast-in-place slab.
枠型後部脚3と枠型前部脚2との間の間隔は、ほぼ一径間長の長さ寸法とされ、また前部レール40の長さ寸法もほぼ同様な寸法とされている。   The distance between the frame-type rear leg 3 and the frame-type front leg 2 is approximately the same length as the length, and the length of the front rail 40 is also approximately the same.
次に、図1および図6〜図8を参照して、本発明の移動式架設機を使用して並行する桁37上にPC床版を架設施工する方法について説明する。   Next, with reference to FIG. 1 and FIGS. 6-8, the method of erection construction of PC floor slabs on the parallel girder 37 using the mobile erection machine of this invention is demonstrated.
先ず、図1および図6の状態は、並行する桁37上にわたって、橋軸直角方向に間隔をおくと共に橋軸方向にPC鋼材挿通孔を有するPC床版8が多数並べて架設され、各PC床版8に橋軸方向にPC鋼材が挿通配置され、PC床版8の上部間に目地部モルタルが充填硬化され、PC鋼材が緊張・定着されて一体化された既設のPC床版8a上にレール(床版上レール)9が設置され、本発明の自走式架設機39の枠型後部脚3におけるゴムタイヤを備えた車輪5が前記床版上レール9上に載置され橋軸方向の新設側に近接した位置に進行した状態であると共に、新たにPC床版8を架設しようとする径間の前部レール40(受け金具47付きのレール)が取り外されて、その前部レール40をさらに新設側の径間の鋼桁37上に移設され、その前部レール40上に自走式架設機39における枠型前部脚2の前部車輪5が載置されている状態である。   First, in the state of FIG. 1 and FIG. 6, a large number of PC floor slabs 8 are arranged side by side across the parallel girders 37 in the direction perpendicular to the bridge axis and have PC steel material insertion holes in the bridge axis direction. PC steel is inserted into the plate 8 in the direction of the bridge axis, the joint mortar is filled and hardened between the upper parts of the PC floor slab 8, and the PC steel is tensioned and fixed and integrated on the existing PC floor slab 8a. Rails (floor slab upper rails) 9 are installed, and wheels 5 equipped with rubber tires in the frame-type rear legs 3 of the self-propelled erection machine 39 of the present invention are placed on the slab upper rails 9 in the direction of the bridge axis. The front rail 40 (the rail with the receiving bracket 47) between which the PC floor slab 8 is to be newly installed is removed, and the front rail 40 is removed. Is moved on the steel girder 37 between the spans on the new side, Front wheel 5 of the frame type Zenbuashi 2 in the self-propelled construction machine 39 on the front rail 40 of a state of being placed.
図6に示す状態で、床版上レール9上を移動する後方から運搬台車23によりPC床版8を、自走式架設機39の後部直下に搬送し、次いで前記自走式架設機39に付属する橋軸方向に搬送可能な吊り装置18により、前記新たに架設用のPC床版8を吊り上げて橋軸方向新設側に搬送する。なお、前記運搬台車23上にPC床版8を載置する工程は、図示を省略するが、交通障害が比較的少ない後方の桁架設前の鋼脚間の広い地上または桁架設後において、側道等の道路上に移動式クレーンを配置して、移動式クレーンにより吊り上げ載置する。   In the state shown in FIG. 6, the PC floor slab 8 is transported directly below the rear portion of the self-propelled erection machine 39 by the transport carriage 23 from the rear moving on the floor slab upper rail 9, and then to the self-propelled erection machine 39. The newly installed PC floor slab 8 is lifted by the attached suspension device 18 that can be transported in the bridge axis direction, and is transported to the bridge axis direction new installation side. The step of placing the PC floor slab 8 on the transport carriage 23 is not shown in the figure, but the side between the steel legs before the erection of the rear girder and the erection of the rear side is relatively small. A mobile crane is placed on a road such as a road, and is lifted and placed by the mobile crane.
前記のPC床版8は橋軸直角方向を橋軸方向に向けて搬送しているため、枠型前部脚2と枠型後部脚3との間の適当な位置において、吊り装置18を90度旋回させることで、前記PC床版の向きを90度回転させて所定の配置姿勢にし、この状態で、既設側のPC床版8に隣接するように搬送して桁37上に吊り下げ設置する。   Since the PC floor slab 8 is transported in the direction perpendicular to the bridge axis in the direction of the bridge axis, the suspension device 18 is placed at an appropriate position between the frame-type front leg 2 and the frame-type rear leg 3. The PC floor slab is rotated 90 degrees so that the PC floor slab is rotated to a predetermined orientation. In this state, the PC floor slab is transported adjacent to the existing PC floor slab 8 and suspended on the girder 37. To do.
前記のPC床版8の搬送設置工程を必要回数繰り返して、図7に示すように多数のPC床版8を所定の位置に搬送設置する。PC床版8と鋼桁37とは、鋼桁37に固定のスタッドボルト52をPC床版8の上下に貫通した矩形状貫通孔に位置させ、モルタルを充填して一体化する。   The PC floor slab 8 transfer and installation process is repeated as many times as necessary, and a large number of PC floor slabs 8 are transferred and installed at predetermined positions as shown in FIG. The PC floor slab 8 and the steel girder 37 are integrated by filling a mortar with a stud bolt 52 fixed to the steel girder 37 positioned in a rectangular through-hole penetrating up and down the PC floor slab 8.
図8に示すように、次の橋脚36付近または橋脚36上まで、所定枚数のPC床版8を架設した後、図11aに示すように、PC床版8相互間の目地部41にPC鋼材挿通孔相互が連通するようにシースを配置し、目地部に無収縮モルタル42を充填し硬化させた後、前記各PC床版8の橋軸方向のPC鋼材挿通孔43に渡ってPC鋼材44を挿通配置し、各PC鋼材44の端部を端部PC床版8の端部に緊張定着し(図11b参照)、各PC床版8を一体化する。(図11a〜c参照)   As shown in FIG. 8, after a predetermined number of PC floor slabs 8 are installed near or on the next pier 36, as shown in FIG. The sheath is disposed so that the insertion holes communicate with each other, the joint portion is filled with the non-shrink mortar 42 and hardened, and then the PC steel material 44 is crossed over the PC steel material insertion holes 43 in the bridge axis direction of the PC floor slabs 8. Is inserted and arranged, and the end of each PC steel material 44 is tension-fixed to the end of the end PC floor slab 8 (see FIG. 11B), and each PC floor slab 8 is integrated. (See FIGS. 11a-c)
端部のPC床版8には、場所打ちコンクリートによる床版44と一体化するための埋め込み連結鉄筋45を張り出させておき、前記場所打ちコンクリートによる床版44と一体化し、既設床版8aを構築する。(図11b参照)   The PC floor slab 8 at the end is overlaid with an embedded connecting rebar 45 for integration with the floor slab 44 made of cast-in-place concrete, integrated with the floor slab 44 made of cast-in-place concrete, and the existing floor slab 8a. Build up. (See FIG. 11b)
なお、必要に応じて、PC床版端部の場所打ち床版およびPC床版間の調整目地部にコンクリート(または無収縮モルタル)を打設する場合の型枠(図示を省略)はトラスから吊られている足場、養生装置を使って組立てコンクリート(または無収縮モルタル)を打設する。   If necessary, the formwork (not shown) for placing concrete (or non-shrink mortar) on the place-to-place slab at the end of the PC slab and the adjustment joint between the PC slabs is omitted from the truss. Placing the assembled concrete (or non-shrink mortar) using the suspended scaffolding and curing device.
次いで、自走式PC床版架設機39における枠型後部脚3の架設機昇降用ジャッキ7、または前後の枠型脚2,3における架設機昇降用ジャッキ7を伸長して鋼桁37に着座させると共にさらに伸長して、自走式PC床版架設機39の後部または全体をジャッキアップさせる。なお、自走式PC床版架設機39を橋軸方向に前進移動するときに、防護足場装置34およびこれに付属する旋回回動用横杆38および防護用ネット33が橋脚36等に干渉しないように、適宜後退移動しておく。   Next, the frame raising / lowering jack 7 of the frame-type rear leg 3 in the self-propelled PC floor slab erection machine 39 or the frame raising / lowering jack 7 of the front and rear frame-type legs 2, 3 is extended and seated on the steel girder 37. And further extended to jack up the rear part or the whole of the self-propelled PC slab erection machine 39. When the self-propelled PC floor slab erection machine 39 is moved forward in the direction of the bridge axis, the protective scaffold device 34 and the turning and turning reed 38 and the protective net 33 attached thereto do not interfere with the pier 36 and the like. Then, move backward as appropriate.
この状態では、枠型後部脚3に付属している車輪5が既設床版上レール9の端部付近で浮いている状態で、その既設床版上レール9の端部に接続するように、橋軸方向に一体化されたPC床版8上に並行する一対のレールが梯子状等に組まれた新設の床版上レール9を架設設置する。   In this state, in a state where the wheel 5 attached to the frame-type rear leg 3 is floating near the end of the existing floor slab upper rail 9, it is connected to the end of the existing floor slab upper rail 9. A new floor slab upper rail 9 in which a pair of parallel rails are assembled in a ladder shape or the like is installed on a PC floor slab 8 integrated in the bridge axis direction.
前記の新設の床版上レール9を架設するには、後方の搬送台車23等により床版上用のレール7をPC床版架設機39の後部に搬送し、電気チェーンブロック20により吊り上げ搬送して新設のPC床版8上に設置すればよい。   In order to construct the above-described newly installed floor slab upper rail 9, the rail 7 on the floor slab is transported to the rear part of the PC floor slab erection machine 39 by the rear transport carriage 23, and is lifted and transported by the electric chain block 20. It may be installed on the newly installed PC floor slab 8.
この新設の床版上レール9の長さは、自走式PC床版架設機39における前後の枠型脚2,3の中心間隔をほぼ一径間としている場合(図示の場合)に、ほぼ一径間分の長さであることが一回の設置作業ですむので望ましい。床版上レール9は適宜PC床版8に着脱可能な固定手段により固定され、例えばPC床版8にアンカー孔を穿設して、雌ねじインサートを埋め込み配置してボルト等により床版上レール9の下部を固定する。   The length of the newly installed floor slab upper rail 9 is approximately equal to the distance between the centers of the front and rear frame-type legs 2 and 3 in the self-propelled PC floor slab erection machine 39 (in the illustrated case). It is desirable that the length is equal to the length of one span because only one installation work is required. The floor slab upper rail 9 is appropriately fixed to the PC floor slab 8 by a detachable fixing means. For example, an anchor hole is drilled in the PC floor slab 8, an internal thread insert is embedded, and the floor slab upper rail 9 is bolted or the like. Fix the bottom of the.
前記のように新設のPC床版8上に床版上レール9を架設した後、架設機昇降用ジャッキ7を短縮してPC床版架設機39の車輪5を床版上レール9に載置し、この状態で、新設の床版上レール9と前部レール40上とに、それぞれPC床版架設機39の枠型後部脚3に付属する車輪5および枠型前部脚2に付属する車輪5を転動するようにPC床版架設機39を新たにPC床版8を架設するほぼ一径間分の新設区間に前進移動する。なお、前部レール40は断面T字状の鋼製受け金具47を介して鋼桁37等に支持されている。受け金具47に前部レール40はボルト48により着脱可能に取付けられ、受け金具47は鋼桁37等にボルト等の適宜の手段により固定されている。前記の受け金具47は鋼桁37上に固定されている橋軸方向2列のスタッドボルト52と前部レール40が干渉しないように受け金具47を介して支承され、受け金具47にはスタッドボルト52の頭部を収容するための溝53を備えている。   After laying the floor slab upper rail 9 on the newly installed PC slab 8 as described above, the laying machine lifting jack 7 is shortened and the wheels 5 of the PC floor slab erection machine 39 are placed on the floor slab upper rail 9. In this state, the wheel 5 attached to the frame type rear leg 3 of the PC floor slab erection machine 39 and the frame type front leg 2 are attached to the newly installed floor slab upper rail 9 and the front rail 40, respectively. The PC floor slab erection machine 39 is moved forward to a new section for approximately one span in which the PC floor slab 8 is newly installed so as to roll the wheels 5. The front rail 40 is supported by a steel beam 37 and the like via a steel bracket 47 having a T-shaped cross section. The front rail 40 is detachably attached to the receiving bracket 47 with bolts 48, and the receiving bracket 47 is fixed to the steel girders 37 and the like by appropriate means such as bolts. The receiving bracket 47 is supported via the receiving bracket 47 so that the stud rails 52 in the two bridge axial directions fixed on the steel girders 37 and the front rail 40 do not interfere with each other. A groove 53 for receiving the head of 52 is provided.
この状態で、前部レール40を取り除くと、その区間の鋼桁37上に新たにPC床版8を架設することができるので、運搬台車23によりPC床版架設機後部に搬送されるレール吊り下げ治具49を電気チェーンブロック20により枠型前部脚2および枠型後部脚3間に位置するように吊り下げ搬送し、また鋼桁37等から受け金具47を取り外すと共に、前部レール40にレール吊り下げ治具49の連結金具50を連結した後、自走式PC床版架設機39における枠型前部脚2の架設機昇降用ジャッキ7、または前後の枠型脚2,3における架設機昇降用ジャッキ7を伸長して鋼桁37に着座させると共にさらに伸長して、自走式PC床版架設機39の前部または全体をジャッキアップさせる。なお、前記の前部レール40は並行する一対レールが梯子状等に組まれた状態で搬送設置すると効率がよい。   If the front rail 40 is removed in this state, the PC floor slab 8 can be newly installed on the steel girder 37 in that section, so that the rail suspended by the transport carriage 23 is conveyed to the rear part of the PC floor slab erection machine. The lowering jig 49 is suspended and conveyed by the electric chain block 20 so as to be positioned between the frame-type front leg 2 and the frame-type rear leg 3, and the receiving bracket 47 is removed from the steel beam 37 and the front rail 40. After connecting the connecting bracket 50 of the rail hanging jig 49 to the frame-type front leg 2 in the self-propelled PC floor slab laying machine 39, the frame raising / lowering jack 7 of the frame type front leg 2 or the front and rear frame type legs 2 and 3 The construction machine elevating jack 7 is extended and seated on the steel girder 37 and further extended to jack up the front part or the whole of the self-propelled PC floor siding construction machine 39. In addition, it is efficient if the front rail 40 is transported and installed in a state where a pair of parallel rails are assembled in a ladder shape or the like.
この状態では、枠型前部脚2に付属している車輪5が前部レール40の前端部付近で浮いている状態であるので、自走式トロリ12を前進走行させて、レール吊り下げ治具49および受け金具付き前部レール40を前方の区間に吊り下げ移動し、前部レール40の後端部を枠型前部脚下部の車輪の下側に挿入するように吊り下げ降下させて、受け金具47を鋼桁37等にボルト等により取付けた後、架設機昇降用ジャッキ7を短縮駆動して、自走式PC床版架設機39を前部レール40上に載置した後、レール吊り下げ治具49を電気チェーンブロック20および運搬台車23により後方の適宜の場所に搬送する。   In this state, since the wheel 5 attached to the frame-type front leg 2 is floating near the front end portion of the front rail 40, the self-propelled trolley 12 is moved forward so that the rail suspension treatment is performed. The tool 49 and the front rail 40 with the bracket are suspended and moved to the front section, and the rear end of the front rail 40 is suspended and lowered so as to be inserted under the wheel at the lower part of the frame type front leg. Then, after attaching the receiving bracket 47 to the steel girder 37 or the like with a bolt or the like, the construction machine elevating jack 7 is driven to be shortened, and the self-propelled PC floor slab erection machine 39 is placed on the front rail 40. The rail hanging jig 49 is transported to an appropriate rear position by the electric chain block 20 and the transport carriage 23.
その後、防護足場装置34およびこれに付属する旋回回動用横杆38および防護用ネット33を橋軸直角方向に前進または旋回回動して所定の位置に設置した後、前記と同様に、並行する鋼桁37上の橋軸方向にPC床版8を架設していく。   After that, the protective scaffold device 34, the turning swivel pad 38 and the protection net 33 attached thereto are moved forward and swiveled in the direction perpendicular to the bridge axis and installed at a predetermined position, and in parallel as described above. The PC floor slab 8 is installed in the bridge axis direction on the steel girder 37.
このような工程を必要回数繰り返して、鋼桁37上の橋軸方向にPC床版8を架設していくと共に端部の場所打ち床版を構築する。   Such a process is repeated as many times as necessary to construct the PC floor slab 8 in the direction of the bridge axis on the steel girder 37 and to construct the cast-in-place slab at the end.
以上のPC床版架設機を使用したPC床版の架設手順を簡単に記すと以下のようになる。
(1)地上から移動式クレーンにより運搬台車23にPC床版8を載置する。
(2)PC床版8を載置した運搬台車23を移動して自走式架設機39まで移動する。
(3)自走式架設機39に付属する走行式トロリおよびその下部に懸架した電気チェーンブロックにより、PC床版8を吊り上げ、移動、旋回、吊り下げ下降を行なって桁37上に配置する。
(4)前記(1)〜(3)を繰り返して、必要組数のPC床版8を桁37上に設置する。
(5)自走式架設機39を昇降用ジャッキ7によりジャッキアップ後、床版上レール9をPC床版8上に、トロリ付き電気チェーンブロック20を使用し配置する。
(6)昇降用ジャッキ7を短縮して、自走式架設機39をジャッキダウン後、架設進行方向へ移動する。
(7)自走式架設機39における昇降用ジャッキ7を伸長しジャッキアップ後、トロリ付き電気チェーンブロック20により、PC床版配置予定の前部レール40を吊り上げて、前方に移動し、次径間へ前部レール40を敷設する。
(8)前記(1)〜(7)の作業を繰り返す。
The construction procedure of the PC floor slab using the above-mentioned PC floor slab erection machine is simply described as follows.
(1) The PC floor slab 8 is placed on the transport carriage 23 by a mobile crane from the ground.
(2) The transport carriage 23 on which the PC floor slab 8 is placed is moved to the self-propelled construction machine 39.
(3) The PC floor slab 8 is lifted, moved, swiveled and suspended and lowered by the traveling trolley attached to the self-propelled erection machine 39 and the electric chain block suspended below the traveling trolley.
(4) Repeat steps (1) to (3) to install the required number of PC floor slabs 8 on the girders 37.
(5) After the self-propelled erection machine 39 is jacked up by the lifting jack 7, the floor slab upper rail 9 is placed on the PC floor slab 8 using the electric chain block 20 with a trolley.
(6) The lifting jack 7 is shortened, and the self-propelled erection machine 39 is moved down in the erection progressing direction after being jacked down.
(7) After elevating the lifting jack 7 in the self-propelled erection machine 39 and jacking up, the electric rail block 20 with a trolley lifts the front rail 40 scheduled to be placed on the PC floor slab and moves it forward to the next diameter. The front rail 40 is laid in between.
(8) The operations (1) to (7) are repeated.
このように本発明の移動式架設機39を使用すると、高架桁37の下方の道路(側道51)が狭い場合にも、移動式架設機39の近傍の道路に移動クレーン車(図示を省略した)を配置することなく、高架桁37上にPC床版8を効率よく設置することができる。   As described above, when the mobile erection machine 39 of the present invention is used, even when the road (side road 51) below the elevated girder 37 is narrow, a mobile crane (not shown) is placed on the road near the mobile erection machine 39. The PC floor slab 8 can be efficiently installed on the elevated girder 37 without arranging the above.
本発明を実施する場合、橋脚中心間(支点間)に合うように枠型前部脚2と枠型後部脚3を配置した架設機とするとよい。   When implementing this invention, it is good to set it as the construction machine which has arrange | positioned the frame type front part leg 2 and the frame type rear leg 3 so that it may fit between pier center (between fulcrum).
前記実施形態では、各防護足場兼支保工装置が一径間分の長さ寸法とされているので、PC床版架設機を移動させるだけで、橋脚間に確実に防護足場兼支保工装置を容易に構成することができる。   In the above embodiment, since each protective scaffolding / supporting device has a length corresponding to one span, the protective scaffolding / supporting device can be surely installed between the piers only by moving the PC slab erection machine. It can be easily configured.
また、前記実施形態では、各防護足場兼支保工装置における固定足場板の内側先端下部に、回動して固定足場板から突出したり退避可能な旋回回動用横杆を備えた防護用ネット支持部材を設けて防護用ネットを支持するだけで、防護用ネットを展開したり退避位置に折り畳むように回動して退避することができる。   Further, in the above-described embodiment, the protective net support member provided with the pivoting recumbent that can be rotated to protrude from the fixed scaffolding plate or retreat at the lower end of the inner side of the fixed scaffolding plate in each protective scaffolding / supporting device. The protective net can be rotated and retracted so that the protective net can be unfolded or folded to the retracted position simply by providing the protective net.
また、前記実施形態では、防護用ネット支持部材を所定角度旋回させるだけで、防護用ネットを展開したり、退避させることができ、したがって、橋脚間の鋼桁幅の狭い区間では、桁下側全体を包むように展開させたり、橋脚間の鋼桁幅の広い区間では、桁下側を囲むように展開させたりすることができ、また、次の橋脚間に移動するときには、退避させて橋脚部外側を通過させることができる。   Further, in the above-described embodiment, the protective net can be expanded and retracted only by turning the protective net support member by a predetermined angle. Therefore, in the section where the steel girder width between the piers is narrow, the underside It can be deployed so as to wrap the whole, or in a section with a wide steel girder width between piers, it can be deployed so as to surround the underside of the girder. The outside can be passed.
本発明の一実施形態の自走式PC床版架設機を高架桁上で使用している状態を示す概略側面図である。It is a schematic side view which shows the state which is using the self-propelled PC floor slab erection machine of one Embodiment of this invention on an elevated girder. 図1の一部を拡大して示す側面図である。It is a side view which expands and shows a part of FIG. 図1のA−A線断面図である。It is the sectional view on the AA line of FIG. (a)は鋼桁上に設けられる受け台と、前部側レールと走行車輪との関係を示す概略正面図、(b)は一部縦断側面図である。(A) is a schematic front view which shows the relationship between the cradle provided on a steel girder, a front part side rail, and a traveling wheel, (b) is a partially vertical side view. 幅員が広い場合に各横行用トロリおよび防護足場装置を外側に移動した状態を示す一部縦断正面図である。It is a partial longitudinal cross-sectional front view which shows the state which moved each trolley for trolleys and a protective scaffold apparatus to the outer side when the width | variety is wide. 自走式PC床版架設機を使用して鋼桁上にPC床版を架設する場合の各装置の配置状態を示す概略側面図である。It is a schematic side view which shows the arrangement | positioning state of each apparatus in the case of constructing a PC floor slab on a steel girder using a self-propelled PC floor slab erection machine. 自走式PC床版架設機を使用して、鋼桁上にPC床版を架設した状態を示す概略側面図である。It is a schematic side view which shows the state which built the PC floor slab on the steel girder using the self-propelled PC floor slab erection machine. 自走式PC床版架設機をジャッキアップして、前部レールを次の径間側に吊り下げ搬送して架設する直前の状態を示す概略側面図である。It is a schematic side view showing a state immediately before jacking up a self-propelled PC floor slab erection machine and suspending and conveying the front rail to the next span side. 橋軸方向のPC床版の配置形態と場所打ち床版部の配置形態の一例を示す概略平面図である。It is a schematic plan view which shows an example of the arrangement | positioning form of the PC floor slab of a bridge axis direction, and the arrangement | positioning form of a place-placed slab part. 図9におけるPC床版部の一部を拡大して示す概略平面図である。It is a schematic plan view which expands and shows a part of PC floor slab part in FIG. (a)はPC床版相互の目地部およびPC床版相互に渡ってPC鋼材を挿通配置している状態を示す縦断側面図、(b)はPC床版部と場所打ち床版部の連結部付近を示す縦断側面図、(c)は橋軸方向の中間部のPC床版でPC鋼材を定着する場合の構造を示す縦断側面図である。(A) is a longitudinal side view showing a state in which PC steel materials are inserted and arranged between PC floor slab joints and PC floor slabs, and (b) is a connection between the PC floor slab and the cast-in-place slab. FIG. 4C is a longitudinal side view showing a structure when a PC steel material is fixed by a PC floor slab in an intermediate part in the bridge axis direction. (a)および(b)はそれぞれPC鋼材挿通孔を有するPC床版の例を示す正面図である。(A) And (b) is a front view which shows the example of the PC floor slab which has PC steel material penetration hole, respectively.
符号の説明Explanation of symbols
1 鋼製トラスガーダ
2 枠型前部脚
3 枠型後部脚
4 上部横杆
5 走行用車輪
6 ガイドローラ
7 架設機昇降用ジャッキ
8 架設されたPC床版
9 床版上レール
10 走行用レール
11 走行車輪
12 自走式トロリ
13 縦枠
14 走行用トロリのフレーム
15 旋回支持台
16 環状外歯
17 旋回台
18 吊り装置
19 吊り杆
20 電気チェーンブロック
21 下フック
22 吊り下げ条体
23 運搬台車
24a 一側部支持レール(横行用レール)
24b 他側部支持レール(横行用レール)
25 横行用トロリ
26 横行用トロリのフレーム
27a 防護足場フレーム
27b 防護足場フレーム
28 固定足場板
29 縦防護用ネット
30 防護用ネット支持部材
31 縦軸
32 旋回駆動装置
33a 防護用ネット
33b 防護用ネット
34a 防護足場兼支保工装置
34b 防護足場兼支保工装置
35 支持梁
36 橋脚
37 桁
39 自走式架設機
40 前部レール
41 目地部
42 無収縮モルタル
43 PC鋼材挿通孔
44 場所打ち床版
45 埋め込み連結鉄筋
46 架設機昇降用ジャッキ
47 受け金具
48 ボルト
49 レール吊り下げ金具
50 連結金具
51 側道
52 スタッドボルト
53 溝
54 貫通孔
DESCRIPTION OF SYMBOLS 1 Steel truss girder 2 Frame type front leg 3 Frame type rear leg 4 Upper side rail 5 Traveling wheel 6 Guide roller 7 Construction machine raising / lowering jack 8 Built-in PC floor slab 9 Floor slab upper rail 10 Traveling rail 11 Travel Wheel 12 Self-propelled trolley 13 Vertical frame 14 Traveling trolley frame 15 Swivel support base 16 Annular external teeth 17 Swivel base 18 Suspension device 19 Suspension rod 20 Electric chain block 21 Lower hook 22 Suspension strip 23 Transport carriage 24a One side Part support rail (traverse rail)
24b Support rail on the other side (rail for traversing)
25 Traversing trolley 26 Traversing trolley frame 27a Protective scaffold frame 27b Protective scaffold frame 28 Fixed scaffold plate 29 Vertical protective net 30 Protective net support member 31 Vertical axis 32 Rotating drive 33a Protective net 33b Protective net 34a Protective Scaffolding / supporting device 34b Protective scaffolding / supporting device 35 Support beam 36 Bridge pier 37 Girder 39 Self-propelled erection machine 40 Front rail 41 Joint part 42 Non-shrink mortar 43 PC steel material insertion hole 44 Cast-in-place slab 45 Embedded connecting reinforcing bar 46 Jack for elevating machine 47 Receptacle bracket 48 Bolt 49 Rail hanging bracket 50 Connecting bracket 51 Side road 52 Stud bolt 53 Groove 54 Through hole

Claims (3)

  1. 桁上にPC床版を架設する自走式PC床版架設機において、前後方向に延長するガーダの中間部に、枠内側が開放された枠型前部脚および枠型後部脚が間隔をおいて配置されると共に前記枠型前部脚および枠型後部脚の上部が固定され、枠型前部脚および枠型後部脚には架設機昇降用ジャッキを備え、前記ガーダには前後方向に延長する走行用レールが枠型前部脚内および枠型後部脚内を通るように設けられ、前記走行用レールに、下部に旋回部を有する走行用トロリが走行可能に設けられ、前記旋回部に吊り装置が設けられていることを特徴とする自走式PC床版架設機。   In a self-propelled PC floor slab erection machine that lays a PC floor slab on a girder, a frame-type front leg and a frame-type rear leg that are open inside the frame are spaced apart from the middle part of the girder that extends in the front-rear direction. The upper part of the frame type front leg and the frame type rear leg are fixed, the frame type front leg and the frame type rear leg have jacks for raising and lowering the construction machine, and the girder extends in the front-rear direction. A traveling rail is provided so as to pass through the frame-type front leg and the frame-type rear leg. A self-propelled PC floor slab erection machine characterized in that a suspension device is provided.
  2. 枠型前部脚および枠型後部脚の左右両側にそれぞれ外側に張り出す一側部支持レールと他側部支持レールが設けられ、各一側部支持レールにそれぞれ支持される横行用トロリに渡って設けられた一側部防護足場兼支保工装置と、各他側部支持レールにそれぞれ支持される横行用トロリに渡って設けられた他側部防護足場兼支保工装置とが、桁を囲むように相互に接近および離反移動可能に構成されていることを特徴とする請求項1に記載の自走式PC床版架設機。   One side support rail and the other side support rail that protrude outward are provided on the left and right sides of the frame type front leg and the frame type rear leg, respectively, and cross over the traversing trolley supported by each one side support rail. 1 side protection scaffolding / supporting device provided on the other side and the other side protection scaffolding / supporting device provided across the traversing trolley supported by each other side support rail surround the girder The self-propelled PC floor slab erection machine according to claim 1, wherein the self-propelled PC floor slab erection machine is configured to be movable toward and away from each other.
  3. 請求項1または請求項2の自走式PC床版架設機を使用して、自走式PC床版架設機をジャッキアップして前部レールから前部走行車輪を浮かせ、その前部レールの前部を前方にかつ前部レールの後端部を前部走行車輪の下に搬送移動して桁上に敷設し、前部レールを取り除いた区間の桁上にPC床版を架設した後、既設の床版上レールに接続するように前記PC床版上に新設の床版上レールを設け、次いで前部レールおよび床版上レールを利用して自走式PC床版架設機を次にPC床版を架設する区間に移動させる工程を繰り返すことを特徴とするPC床版の架設工法。   Using the self-propelled PC floor slab erection machine according to claim 1 or claim 2, the self-propelled PC floor slab erection machine is jacked up to lift the front traveling wheel from the front rail. After moving the front part forward and the rear end of the front rail under the front traveling wheel and laying it on the girders, laying the PC floor slab on the girders in the section where the front rails were removed, A new floor slab upper rail is provided on the PC floor slab so as to be connected to an existing floor slab upper rail, and then a self-propelled PC floor slab erection machine is next utilized using the front rail and the floor slab upper rail. A PC floor slab erection method characterized by repeating the process of moving the PC slab to the section where it is erected.
JP2004209092A 2004-07-15 2004-07-15 Self-propelled pc floor slab erecting machine and pc floor slab erecting method Pending JP2006028881A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008214940A (en) * 2007-03-02 2008-09-18 Sumitomo Mitsui Construction Co Ltd Movable suspension timbering
JP2008303666A (en) * 2007-06-11 2008-12-18 Sumitomo Mitsui Construction Co Ltd Movable suspension support and assembling method of movable suspension support
JP2009191458A (en) * 2008-02-12 2009-08-27 Jfe Engineering Corp Construction apparatus for bridge, construction method for floor slab, and construction method for bridge
JP2011169073A (en) * 2010-02-22 2011-09-01 Yokogawa Sumikin Bridge Corp Installing method for floor slab construction panel and transfer carriage
WO2011143923A1 (en) * 2010-05-19 2011-11-24 北京万桥兴业机械有限公司 Transportation and erection integrated machine with displacement platforms and method for erecting bridge using the same
CN102493357A (en) * 2011-12-28 2012-06-13 郑州新大方重工科技有限公司 Rear leg device suitable for highway and railway two-purpose bridge girder erection machine
CN108755416A (en) * 2018-05-11 2018-11-06 山东铁正工程试验检测中心有限公司 Bridge packaging technology
CN111996916A (en) * 2020-08-04 2020-11-27 中交第二航务工程局有限公司 Cast-in-place box girder integrated construction equipment and construction method thereof

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008214940A (en) * 2007-03-02 2008-09-18 Sumitomo Mitsui Construction Co Ltd Movable suspension timbering
JP2008303666A (en) * 2007-06-11 2008-12-18 Sumitomo Mitsui Construction Co Ltd Movable suspension support and assembling method of movable suspension support
JP2009191458A (en) * 2008-02-12 2009-08-27 Jfe Engineering Corp Construction apparatus for bridge, construction method for floor slab, and construction method for bridge
JP2011169073A (en) * 2010-02-22 2011-09-01 Yokogawa Sumikin Bridge Corp Installing method for floor slab construction panel and transfer carriage
WO2011143923A1 (en) * 2010-05-19 2011-11-24 北京万桥兴业机械有限公司 Transportation and erection integrated machine with displacement platforms and method for erecting bridge using the same
US8555442B2 (en) 2010-05-19 2013-10-15 Beijing Wowjoint Machinery Co. Transportation and erection integrated machine with displacement platforms and methods for erecting bridge using the same
CN102493357A (en) * 2011-12-28 2012-06-13 郑州新大方重工科技有限公司 Rear leg device suitable for highway and railway two-purpose bridge girder erection machine
CN102493357B (en) * 2011-12-28 2013-11-27 郑州新大方重工科技有限公司 Rear leg device suitable for highway and railway two-purpose bridge girder erection machine
CN108755416A (en) * 2018-05-11 2018-11-06 山东铁正工程试验检测中心有限公司 Bridge packaging technology
CN108755416B (en) * 2018-05-11 2019-08-20 铁正检测科技有限公司 Bridge packaging technology
CN111996916A (en) * 2020-08-04 2020-11-27 中交第二航务工程局有限公司 Cast-in-place box girder integrated construction equipment and construction method thereof

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