JP2563762B2 - Bridge girder uplifting method, uplifting machine and vent member - Google Patents
Bridge girder uplifting method, uplifting machine and vent memberInfo
- Publication number
- JP2563762B2 JP2563762B2 JP23312294A JP23312294A JP2563762B2 JP 2563762 B2 JP2563762 B2 JP 2563762B2 JP 23312294 A JP23312294 A JP 23312294A JP 23312294 A JP23312294 A JP 23312294A JP 2563762 B2 JP2563762 B2 JP 2563762B2
- Authority
- JP
- Japan
- Prior art keywords
- lifting
- bridge girder
- vent member
- machine
- hoisting machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Description
【０００１】[0001]
【産業上の利用分野】この発明は、供用中の鉄道橋や道
路橋などの橋桁を扛上または扛下させ、さらに横移動さ
せる扛上扛下工法、この工法に使用する扛上機およびベ
ント部材に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an uplifting and downlifting method for moving or laterally moving a bridge girder such as a railway bridge or road bridge in service, and an uplifting machine and a vent used for this method. It relates to members.
【０００２】[0002]
【従来の技術】近年、道路拡張や高架化に伴い、供用中
の鉄道橋や道路橋などの橋桁を扛上し、また横移動させ
る扛上工事が増えている。この種の工事における扛上方
法としては、大型クレーンによる吊上げや、屋根仮設な
どに使用されるリフトアップ工法などの吊上げ方式があ
るが、狭小地など吊上げ方式の採用できない制限された
場所では、サンドル材と油圧ジャッキを使用するジャッ
キアップ工法が採用されている。2. Description of the Related Art In recent years, along with the expansion of roads and overpasses, there has been an increase in the number of construction works for raising and laterally moving bridge girders such as railway bridges and road bridges in service. Lifting methods for this type of construction include hoisting methods such as hoisting with large cranes and lift-up methods used for roof temporary construction, etc. A jack-up method is used that uses materials and hydraulic jacks.
【０００３】このジャッキアップ工法は、橋桁の長手方
向両端部の下方に配設した支持構造物の最上部に複数台
の油圧ジャッキを配置し、橋桁をこの油圧ジャッキで持
ち上げてサンドル材を積み上げ、次いで油圧ジャッキを
下降させてサンドル材で橋桁を支持し、これを交互に繰
り返して橋桁を順次扛上させる方法である。In this jack-up construction method, a plurality of hydraulic jacks are arranged on the uppermost part of the support structure arranged below both longitudinal ends of the bridge girder, and the bridge girders are lifted by the hydraulic jacks to stack sandle members. Then, the hydraulic jack is lowered to support the bridge girder with sander material, and this is repeated alternately to raise the bridge girder in sequence.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、前述の
ような従来のジャッキアップ工法では、次のような問題
点がある。However, the conventional jack-up method as described above has the following problems.
【０００５】(1) 高所でかつ狭い箇所で、重量物を取り
扱う作業となるため、危険な作業となり、また熟練した
作業者を必要とする。(1) Since it is a work to handle heavy objects in a high place and a narrow place, it is a dangerous work and requires a skilled worker.
【０００６】(2) ストロークの小さい油圧ジャッキと、
高さの低いサンドル材を使用するため、高所での狭い場
所での作業であることと相まって、扛上のサイクル、即
ちサンドル材の高さ２０〜３０ｃｍを扛上するのに比較
的長時間かかり、作業能率が悪い。(2) A hydraulic jack with a small stroke,
Because of the use of low-height sandle material, it takes a relatively long time to lift up the sanding cycle, that is, 20-30 cm in height, in combination with working in a narrow place at a high place. It takes time and the work efficiency is poor.
【０００７】(3) 同時に複数箇所の油圧ジャッキをコン
トロールしなければならず、煩雑な管理を必要とし、作
業時間がかかり、人手も多く必要となる。(3) The hydraulic jacks at a plurality of locations must be controlled at the same time, which requires complicated management, requires a long working time, and requires a lot of manpower.
【０００８】(4) 橋桁を横移動させるためには、橋桁を
支持する支持部材を移動させる横移動装置を別途設置す
る必要があり、時間がかかるとともに、面倒な作業とな
り、安全で迅速な横移動が困難である。(4) In order to laterally move the bridge girder, it is necessary to separately install a lateral moving device for moving the support member that supports the bridge girder, which takes time, is a troublesome work, and is a safe and quick lateral movement. It is difficult to move.
【０００９】なお、橋桁の横移動に関しては、ＰＣ桁を
扛上させた後、横移動させるＰＣ桁横取り装置（特公平
６−２９４８９号公報）があるが、これは橋梁工事にお
いて、使用される橋桁を工事現場で製造し、架設工事の
方へ縦移動させる前に一時待機させるために横移動させ
るためのもので、製造されたＰＣ桁を特殊な支持部材で
吊り支持して若干扛上させ、次いで走行台車で横移動さ
せる装置であり、既存の橋桁を扛上させた後、横移動さ
せる場合には適用できない。Regarding the lateral movement of the bridge girder, there is a PC girder take-off device (Japanese Patent Publication No. 6-29489) for moving the PC girder up and then moving it laterally, which is used in bridge construction. The bridge girder is manufactured at the construction site and horizontally moved to temporarily wait before moving vertically to the erection work, and the manufactured PC girder is suspended and supported by a special support member and slightly lifted. , It is a device to move laterally with a traveling carriage, and it cannot be applied to the case where the existing bridge girder is lifted and then moved laterally.
【００１０】この発明は、前述のような問題点を一挙に
解消すべくなされたもので、その目的は、高所でかつ狭
い場所での作業をなくし安全性の向上および省力化を図
れ、扛上扛下作業または横移動作業を容易かつ迅速に、
また扛上扛下時または横移動時の事故を防止して作業を
安全に行うことのできる橋桁の扛上扛下工法，扛上機お
よびベント部材を提供することにある。The present invention has been made to solve the above-mentioned problems all at once, and its purpose is to eliminate the work in a high place and a narrow place, improve safety and save labor, Easy and quick upper and lower work or lateral movement work,
Another object of the present invention is to provide an uplifting method, an uplifting machine and a vent member for a bridge girder, which can prevent accidents during uplifting or lateral movement and safely perform work.
【００１１】[0011]
【課題を解決するための手段】本発明に係る工法は、橋
桁を長手方向両端部で支持して扛上あるいは扛下する工
法であって、橋桁と地上との間に配設される複数段の単
位ベント部材と、地上に設置される一対の扛上機とを使
用し、一対の扛上機により支持したベント部材の最下段
に単位ベント部材を継ぎ足し、あるいは最下段の単位ベ
ント部材を取り外し、この最下段となった単位ベント部
材を一対の扛上機により上昇、あるいは下降させ、この
継ぎ足しと上昇、あるいは取り外しと下降を順次繰り返
して橋桁をベント部材と共に扛上させ、あるいはベント
部材と共に扛下させるものである。The construction method according to the present invention is a construction method for supporting or lifting or lowering a bridge girder at both ends in the longitudinal direction, and comprising a plurality of steps arranged between the bridge girder and the ground. Unit vent member and a pair of lifting machines installed on the ground, add the unit vent member to the bottom of the vent member supported by the pair of lifting machines, or remove the bottom unit vent member. The unit vent member at the lowest stage is raised or lowered by a pair of lifting machines, and this addition and raising, or removal and lowering are repeated in order to raise the bridge girder together with the vent member or raise it together with the vent member. It is something to let go down.
【００１２】また、ベント部材の扛上扛下の前後あるい
は途中において、一対の扛上機に最下段のベント部材を
載置し、この一対の扛上機を横移動させることにより、
橋桁をベンド部材と共に横移動させる。In addition, before or after the raising of the vent members, or at the middle thereof, the lowermost vent member is placed on the pair of raising machines, and the pair of raising machines is moved laterally.
The bridge girder is laterally moved together with the bend member.
【００１３】このような工法に使用する扛上機は、橋桁
長手方向両端部において橋桁幅方向に一対で地上に配設
され、橋桁を支持するベント部材を橋桁幅方向両側で支
持して昇降させる扛上機であって、昇降用のガイドポス
トと昇降駆動機構を備えた扛上機本体フレームと、前記
ガイドポストを案内として前記昇降駆動機構により昇降
し、突出部によりベント部材の端部を支持する扛上用フ
ォークから構成する。The hoisting machine used for such a construction method is arranged on the ground in a pair in the width direction of the bridge girder at both ends in the longitudinal direction of the bridge girder, and the vent members supporting the bridge girder are supported on both sides in the width direction of the bridge girder to move up and down. A lifting machine, wherein a lifting machine main body frame having a lifting guide post and a lifting drive mechanism, and lifting and lowering by the lifting drive mechanism using the guide post as a guide, and an end of a vent member supported by a protruding portion. It consists of a fork for lifting.
【００１４】昇降駆動機構は、１台の昇降用モータで駆
動される一対のスクリュージャッキとし、スクリュージ
ャッキのスクリューロッドにナット部材を介して扛上用
フォークを設け、一対の扛上フォークを同期して昇降さ
せる方式とする。The elevating and lowering drive mechanism is a pair of screw jacks driven by a single elevating and lowering motor, a screw rod of the screw jack is provided with a lifting fork via a nut member, and the pair of lifting forks are synchronized with each other. It will be lifted up and down.
【００１５】また、扛上機本体フレームの下部には、橋
桁幅方向と平行に配設された水平ガイドレール上を横移
動可能な横移動装置を設け、最下段のベント部材を載置
した一対の扛上機を横移動させることにより、橋桁をベ
ンド部材と共に横移動できるようにする。Further, at the lower part of the hoisting machine main body frame, there is provided a lateral moving device capable of laterally moving on a horizontal guide rail arranged in parallel with the width direction of the bridge girder, and a pair of vent members at the lowest stage are placed. By laterally moving the lifting machine, the bridge girder can be laterally moved together with the bend member.
【００１６】さらに、各扛上機には、各扛上機の支持荷
重検出信号に基づいて各扛上機の負荷状態を監視し、各
扛上機の扛上用フォークの昇降高さ検出信号に基づいて
各扛上機の扛上用フォークを同期して昇降制御する集中
制御装置を接続する。また、この集中制御装置には、各
扛上機の横移動検出信号に基づいて各扛上機を同期して
横移動制御する機能を持たせる。Further, each hoisting machine monitors the load state of each hoisting machine based on the support load detection signal of each hoisting machine, and detects the lifting height detection signal of the hoisting fork of each hoisting machine. Based on the above, a centralized control device for synchronously raising and lowering the lifting forks of each lifting machine is connected. Further, the centralized control device is provided with a function of synchronously controlling the lateral movement of the respective hoisting machines on the basis of the lateral movement detection signal of each hoisting machine.
【００１７】橋桁と地上との間に配設される複数段の単
位ベント部材は、鉄骨柱と鉄骨梁を備え、鉄骨梁は鉄骨
柱から外方に突出した突出部を扛上機の扛上用フォーク
に連結して扛上扛下時に荷重を受け、鉄骨柱は上下に着
脱可能に連続可能で扛上扛下後に荷重を受ける鉄骨柱梁
構造とする。The multi-stage unit vent member arranged between the bridge girder and the ground has a steel frame column and a steel frame beam, and the steel frame beam has a projecting portion projecting outward from the steel frame column for raising the lifting machine. It is connected to a fork and receives a load when it is lowered, and the steel columns can be continuously attached to and detached from the top and bottom, and the steel column beam structure receives the load after dropping.
【００１８】[0018]
【作用】以上のような構成において、一対の扛上機で最
下段の単位ベント部材を上昇させ、この単位ベント部材
の下部に単位ベント部材を継ぎ足し、あるいは最下段の
単位ベント部材を下降させて取り外すため、地上におい
て橋桁の扛上扛下作業を行うことができ、高所における
狭い場所での作業を解消することができる。In the above structure, the lowermost unit vent member is raised by a pair of lifting machines, the unit vent member is added to the lower part of the unit vent member, or the lowest unit vent member is lowered. Since it is removed, it is possible to perform the work of raising and lowering the bridge girder on the ground, eliminating the work in a narrow place at a high place.
【００１９】専用の大型ベント部材を使用して、地上に
設置した扛上機で順次大型ベント部材の高さ分だけ昇降
させ、また扛上機により地上で段取り替えを行うことが
できるので、扛上扛下作業を容易にかつ迅速に行うこと
ができる。By using a dedicated large vent member, a lifting machine installed on the ground can move up and down by the height of the large vent member in sequence, and the lifting machine can perform setup change on the ground. The upper and lowering work can be performed easily and quickly.
【００２０】一対の扛上機は、ベント部材を載置して移
動装置と水平ガイドレールにより横移動することがで
き、一体化した扛上機とベント部材で橋桁を支持しつつ
横移動させることができる。The pair of hoisting machines can be laterally moved by mounting a vent member by means of a moving device and a horizontal guide rail, and laterally moving while supporting the bridge girder by the integrated hoisting machine and vent members. You can
【００２１】集中制御装置により橋桁長手方向両端部に
一対で合計４台の扛上機の扛上用フォークが同期して昇
降制御され、ストローク誤差を極めて少なくすることが
でき、偏荷重による事故を防止することができる。万
一、偏荷重が認められた場合には、自動的に扛上機が停
止される。また、扛上機の横移動も集中制御装置により
同期して移動制御され、横移動を容易にかつ迅速に行え
ると共に、転倒事故等を防止することができる。The centralized control device controls the lifting forks of a total of four lifting machines in a pair at both ends in the longitudinal direction of the bridge girder so that the lifting forks are synchronously controlled, and the stroke error can be extremely reduced, and an accident due to an unbalanced load can be prevented. Can be prevented. In the unlikely event that an unbalanced load is found, the lifting machine is automatically stopped. In addition, the lateral movement of the hoisting machine is synchronously controlled by the centralized control device, so that the lateral movement can be performed easily and quickly, and a fall accident or the like can be prevented.
【００２２】[0022]
【実施例】以下、この発明を図示する一実施例に基づい
て説明する。これは、供用中の鉄道高架橋のＰＣ桁の扛
上・横移動工事に適用した例であり、図１は本発明に係
るベントアップ・スライドシステム工法の概念を示す斜
視図、図２，図３は本工法に使用する扛上機の正面図，
側面図、図４，図５はそれぞれスライド時の状態，ベン
トアップ終了時等の状態を示し、図６〜図９は向上・横
移動工事例の手順を示す工程図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an illustrated embodiment. This is an example applied to the work to raise and laterally move a PC girder on a railway viaduct in service, and FIG. 1 is a perspective view showing the concept of a vent-up slide system construction method according to the present invention, FIGS. Is a front view of the lifting machine used in this method,
Side views, FIGS. 4 and 5 show the state at the time of sliding, the state at the end of venting up, etc., and FIGS. 6 to 9 are process drawings showing the procedure of the improvement / lateral movement construction example.
【００２３】図１〜図３に示すように、本発明工法で
は、特殊な構造の大型ベント部材１と、横移動可能な扛
上機２とを使用し、複数段の大型ベント部材１で橋桁Ｇ
の長手方向両端部下面を支持し、橋桁幅方向に左右一対
の扛上機２により、単位大型ベント部材１の最下段への
継ぎ足しと、最下段となった単位大型ベント部材１の上
昇とを、地上において順次繰り返し、橋桁Ｇを大型ベン
ト部材１と共に扛上させ、また左右一対の扛上機２に大
型ベント部材１を積載して橋桁Ｇを橋桁長手方向と直交
する橋桁幅方向に横移動させる。As shown in FIGS. 1 to 3, in the method of the present invention, a large-sized vent member 1 having a special structure and a horizontally movable uplifting machine 2 are used, and a bridge girder is constructed with a plurality of large-sized vent members 1. G
The lower end of the unit large-sized vent member 1 is lifted and the unit large-sized vent member 1 is lifted by the pair of left and right lifting machines 2 in the bridge girder width direction. , Repeating sequentially on the ground, the bridge girder G is lifted together with the large vent member 1, and the large vent member 1 is loaded on the pair of left and right lifting machines 2 to laterally move the bridge girder G in the bridge girder width direction orthogonal to the longitudinal direction of the bridge girder. Let
【００２４】大型ベント部材１は、橋桁幅方向に長い略
直方体形状の鉄骨柱梁構造の構柱であり、４本の柱１Ａ
と、４本の梁１Ｂと、斜材１Ｃと、水平材１Ｄなどから
構成する。橋桁幅方向に平行な２本の梁１Ｂの両端部を
柱１Ａの外側に水平に突出させ、この突出部１Ｂ’の先
端に吊支持用のピン孔部１Ｅを設ける。また、この大型
ベント部材１は、一定高さの単位部材であり、上下の大
型ベント部材１の柱１Ａが上下に連続するように構成
し、柱１Ａの上下端部同士をボルト接合などにより接続
して着脱可能とする。The large-scale vent member 1 is a structural column having a substantially rectangular parallelepiped steel-framed beam structure that is long in the width direction of the bridge girder, and has four columns 1A.
It is composed of four beams 1B, diagonal members 1C, horizontal members 1D, and the like. Both ends of two beams 1B parallel to the width direction of the bridge girder are projected horizontally to the outside of the pillar 1A, and a pin hole portion 1E for suspending and supporting is provided at the tip of this protruding portion 1B '. The large-sized vent member 1 is a unit member having a constant height, and the pillars 1A of the upper and lower large-sized vent members 1 are configured to be continuous in the vertical direction, and the upper and lower ends of the pillar 1A are connected by bolting or the like. To be removable.
【００２５】扛上機２は１スパンの橋桁に対して合計４
台配設され、各扛上機２は、主として扛上機本体フレー
ム３と、一対のガイドポスト４と、昇降駆動機構５と、
一対の扛上用フォーク６と、横移動装置７と、横移動駆
動機構８と、一対の水平ガイドレール９と、制御盤１０
などから構成する。The lifting machine 2 has a total of 4 for one span bridge girder.
The hoisting machine 2 is provided with a table, and each hoisting machine 2 mainly includes a hoisting machine body frame 3, a pair of guide posts 4, an elevating drive mechanism 5,
A pair of uplifting forks 6, a lateral movement device 7, a lateral movement drive mechanism 8, a pair of horizontal guide rails 9, and a control panel 10.
Etc.
【００２６】扛上機本体フレーム３は、橋桁幅方向に平
行な一対のフレームビーム３Ａを連結部材３Ｂで接続し
て構成し、この各フレームビーム３Ａの橋桁幅方向のほ
ぼ中央部にガイドポスト４を一体的に突設し、それぞれ
のガイドポスト４に扛上用フォーク６を昇降可能に取付
ける。The hoisting machine main body frame 3 is constructed by connecting a pair of frame beams 3A parallel to the width direction of the bridge girder by a connecting member 3B, and a guide post 4 is provided at a substantially central portion of each frame beam 3A in the bridge girder width direction. Are integrally projected, and the lifting forks 6 are attached to the respective guide posts 4 so as to be able to move up and down.
【００２７】このガイドポスト４はＨ形鋼から構成し、
上端同士を連結部材１１で接続しておく。扛上用フォー
ク６は、ガイドポスト４を両側から挟持する側面視でＴ
字状のフレームを接続部材で接続して構成し、内部に配
設した昇降ガイドローラ１２，１３，１４によりガイド
ポスト４を案内として昇降自在とし、ベント部材側の上
部突出部６Ａ間に吊り支持具１５を取付け、反対側の上
部突出部６Ｂ間に、後述する昇降駆動機構５のナット部
材１６を取付ける。The guide post 4 is made of H-shaped steel,
The upper ends are connected by the connecting member 11. The lifting fork 6 has a T-shape in a side view, which holds the guide post 4 from both sides.
A frame having a character shape is connected by a connecting member, and the elevating guide rollers 12, 13 and 14 disposed inside allow the guide post 4 to move up and down freely, and is suspended and supported between the upper protruding portions 6A on the vent member side. The tool 15 is attached, and the nut member 16 of the lifting drive mechanism 5, which will be described later, is attached between the upper protrusions 6B on the opposite side.
【００２８】吊り支持具１５は、上部突出部６Ａの上面
に取付台１７を介して取付けられる基部１５Ａと、この
基部から下方に突出する吊り部１５Ｂから構成し、この
吊り部１５Ｂと大型ベント部材１のピン孔部１Ｅとを連
結ピン１８を介して着脱可能に取付ける。また、基部１
５Ａと取付台１７間には、リング状のロードセル１９を
配設し、このロードセル１９により吊り荷重を検出でき
るようにする。The suspension support 15 comprises a base portion 15A mounted on the upper surface of the upper projecting portion 6A via a mount 17 and a suspension portion 15B projecting downward from the base portion. The suspension portion 15B and a large vent member. The first pin hole portion 1E is detachably attached via the connecting pin 18. Also, the base 1
A ring-shaped load cell 19 is arranged between the 5A and the mount 17, and the load load can be detected by the load cell 19.
【００２９】なお、この扛上用フォーク６によるベント
部材１の支持は、上部突出部６Ａ上に大型ベント部材１
の突出部１Ｂ’を載置して固定するなどの方式も考えら
れるが、ロードセルの取付けが面倒となる、大型ベント
部材１の嵩高が大きくなるなどから前述のような吊り下
げ支持方式が好ましい。The vent member 1 is supported by the lifting fork 6 such that the large vent member 1 is mounted on the upper projecting portion 6A.
Although a method of mounting and fixing the protruding portion 1B ′ of the above is also conceivable, the above-mentioned hanging support method is preferable because the mounting of the load cell becomes troublesome and the bulkiness of the large vent member 1 becomes large.
【００３０】扛上用フォーク６の昇降ガイドローラは、
Ｈ形鋼ガイドポスト４のフランジに当接して転動する上
下に一対の昇降ガイドローラ１２，１３と、ウェブに当
接して転動する昇降ガイドローラ１４とし（図２参
照）、上部の昇降ガイドローラ１２はベント部材側のフ
ランジ内面に当接し、下部の昇降ガイドローラ１３は反
ベント部材側のフランジ内面に当接するように偏位配置
させることにより、大型ベント部材１および橋桁Ｇの荷
重によりガイドポスト４をベント部材側に撓ませる力が
作用しても円滑に昇降できるようにする。The lifting guide roller of the lifting fork 6 is
A pair of up-and-down guide rollers 12 and 13 that roll in contact with the flange of the H-shaped steel guide post 4 and an up-and-down guide roller 14 that rolls in contact with the web (see FIG. 2). The roller 12 is brought into contact with the inner surface of the flange on the vent member side, and the lower elevating guide roller 13 is eccentrically arranged so as to be brought into contact with the inner surface of the flange on the side opposite to the vent member, so that the large vent member 1 and the bridge girder G guide the load. Even if a force for bending the post 4 toward the vent member is applied, the post 4 can be smoothly moved up and down.
【００３１】昇降駆動機構５は、一対の扛上用フォーク
６を同期して昇降させる装置であり、昇降用モータ２０
と、ウォーム減速機２１と、一対のスクリュージャッキ
２２と、一対のスクリューロッド２３と、エンコーダー
２４から構成する。モータ２０とウォーム減速機２１は
扛上機本体フレーム３の中央部上面に設置し、ウォーム
減速機２１の両端出力軸と、一対のスクリュージャッキ
２２の入力軸とをそれぞれカップリングを介して接続す
る。一方のスクリュージャッキ２２の入力軸の他端部に
エンコーダー２４を取付ける。スクリュージャッキ２２
のスクリューロッド２３はそれぞれナット部材１６に螺
合させる。The elevating drive mechanism 5 is a device for elevating and lowering a pair of uplifting forks 6 in synchronization with each other.
The worm reducer 21, the pair of screw jacks 22, the pair of screw rods 23, and the encoder 24. The motor 20 and the worm speed reducer 21 are installed on the upper surface of the center of the lifting machine body frame 3, and the output shafts of both ends of the worm speed reducer 21 and the input shafts of the pair of screw jacks 22 are connected via couplings. . An encoder 24 is attached to the other end of the input shaft of one screw jack 22. Screw jack 22
The respective screw rods 23 are screwed into the nut members 16.
【００３２】なお、スクリュージャッキ２２は球面受座
を有するスイベル機構２５を介して扛上機本体フレーム
３のフレームビーム３Ａに取付け、大型ベント部材１お
よび橋桁Ｇの吊り支持荷重に対して軸力のみをフレーム
ビーム３Ａに伝達するようにしている。なお、スクリュ
ーロッド２３は蛇腹２７で覆って保護する。この蛇腹２
７は、上端を取付部材２６を介してガイドポスト４の上
部に取付け、下端を扛上用フォーク６の上部突出部６Ｂ
の上面に取付ける。The screw jack 22 is attached to the frame beam 3A of the hoisting machine main body frame 3 via a swivel mechanism 25 having a spherical seat, and only the axial force is applied to the suspension supporting load of the large vent member 1 and the bridge girder G. Are transmitted to the frame beam 3A. The screw rod 23 is covered with a bellows 27 for protection. This bellows 2
7, the upper end is attached to the upper part of the guide post 4 via the attachment member 26, and the lower end is the upper projecting portion 6B of the lifting fork 6.
Install on the upper surface of.
【００３３】一台のモータ２０で一対のスクリュージャ
ッキ２２が駆動され、スクリューロッド２３の回転によ
りナット部材１６が上下動し、２つの扛上用フォーク６
が同期して昇降し、常に同じ高さを保持することができ
る。エンコーダー２４の検出信号は制御盤１０に入力さ
れ、回転数から扛上用フォーク６の昇降高さが検出さ
れ、設定された高さになるようにフィードバック制御さ
れる。A pair of screw jacks 22 are driven by one motor 20, and the nut member 16 is moved up and down by the rotation of the screw rod 23, so that the two lifting forks 6 are moved.
Can move up and down synchronously and always maintain the same height. The detection signal of the encoder 24 is input to the control panel 10, and the elevation height of the lifting fork 6 is detected from the number of revolutions, and feedback control is performed so as to reach the set height.
【００３４】さらに、各扛上機２は制御盤１０により個
別に運転が可能であるが、各制御盤１０を集中制御盤
（図示省略）に接続し、橋桁Ｇの両端部に配設される合
計４台の扛上機２を同期して運転可能とする。集中制御
盤には連動同調制御システムが組み込まれており、４台
の扛上機２の扛上用フォーク６の高さを例えば誤差２ｍ
ｍ以内にコンピュータ制御することができる。また、ロ
ードセル１９からの検出信号も集中制御盤に入力して、
各扛上機２の負荷状態を各扛上機２の集中制御盤のディ
スプレイに表示すると共に、偏荷重などによるオーバー
ロードを検知して扛上機２を緊急停止するようにしてい
る。Further, each lifting machine 2 can be operated individually by the control panel 10, but each control panel 10 is connected to a centralized control panel (not shown) and is arranged at both ends of the bridge girder G. It is possible to operate a total of four lifting machines 2 synchronously. The centralized control panel incorporates an interlocking synchronization control system, and the height of the lifting forks 6 of the four lifting machines 2 is, for example, an error of 2 m.
It can be computer controlled within m. In addition, the detection signal from the load cell 19 is also input to the centralized control panel,
The load state of each lifting machine 2 is displayed on the display of the centralized control panel of each lifting machine 2, and the overloading due to an unbalanced load or the like is detected to stop the lifting machine 2 in an emergency.
【００３５】なお、この昇降駆動機構５は、一対の油圧
ジャッキ等を使用することも考えられるが、同調制御性
の良さや小型軽量の点などから前述のような電動メカニ
カルジャッキが好ましい。The lifting drive mechanism 5 may use a pair of hydraulic jacks or the like, but the electric mechanical jack as described above is preferable from the viewpoint of good tuning controllability and small size and light weight.
【００３６】各扛上機２を橋桁幅方向に横移動させる横
移動装置７は、大荷重物体を移動可能に支持する場合に
通常使用されるクローラ式ローラ装置（例えば、チルタ
ンク）とし、各フレームビーム３Ａのビーム長手方向に
間隔をおいて一対で取付ける。なお、この横移動装置７
は、１台の扛上機２に合計４台設置されるが、大型ベン
ト部材１の吊支持点側には大荷重用のものを使用してい
る。The lateral moving device 7 for laterally moving each hoisting machine 2 in the width direction of the bridge girder is a crawler type roller device (for example, a chill tank) which is usually used when movably supporting a heavy load object, and each frame is used. A pair of beams 3A are attached at intervals in the beam longitudinal direction. In addition, this lateral movement device 7
Although a total of four units are installed in one lifting machine 2, a large-sized one is used for the suspension support point side of the large-sized vent member 1.
【００３７】また、この横移動装置７は、橋桁幅方向に
平行に敷設した一対の水平ガイドレール９上を転動可能
とし、横移動装置７の各内側面に取付けられているガイ
ドローラ装置４０と、水平ガイドレール９の内側面に取
付けられたガイド部材４１とにより、水平ガイドレール
９上からの逸脱を防止している（図３参照）。さらに、
各フレームビーム３Ａの外側面には、下端が水平ガイド
レール９の外側面に係合可能なスライド時の転倒防止片
４２を一対でベント部材側の移動装置７位置に取付け、
横移動時の安全性を高めている。The lateral moving device 7 is rollable on a pair of horizontal guide rails 9 laid parallel to the width direction of the bridge girder, and is a guide roller device 40 attached to each inner surface of the lateral moving device 7. And the guide member 41 attached to the inner side surface of the horizontal guide rail 9 prevent deviation from above the horizontal guide rail 9 (see FIG. 3). further,
On the outer surface of each frame beam 3A, a pair of fall prevention pieces 42 at the time of sliding whose lower end is engageable with the outer surface of the horizontal guide rail 9 is attached at the position of the moving device 7 on the vent member side.
Improves safety when moving sideways.
【００３８】横移動駆動機構８は、電動スクリュージャ
ッキ５０による尺取り式とする（図３参照）。即ち、横
移動用モータ５１により動力伝達機構５２を介して駆動
される電動スクリュージャッキ５０を扛上機本体フレー
ム３の中央部における下面に固定し、スクリューロッド
の先端部材５０ａを連結ピン５３を介して駆動用水平レ
ール５４の横移動方向に間隔をおいて複数形成されてい
る係止孔等に着脱可能に固定する。The lateral movement drive mechanism 8 is of a length-measuring type using an electric screw jack 50 (see FIG. 3). That is, the electric screw jack 50 driven by the lateral movement motor 51 via the power transmission mechanism 52 is fixed to the lower surface in the central portion of the lifting machine main body frame 3, and the tip member 50 a of the screw rod is connected via the connecting pin 53. The driving horizontal rail 54 is detachably fixed to a plurality of locking holes formed at intervals in the lateral movement direction.
【００３９】横移動に際しては、スクリューロッド先端
部材５０ａを連結ピン５３により駆動用水平レール５４
に固定し、スクリューロッドを伸縮移動させることによ
り、連結点に反力をとって扛上機２本体を移動させ、次
いで連結ピン５３を抜いてスクリューロッドを伸縮移動
させ、この工程を繰り返すことにより尺取り移動させ
る。For lateral movement, the screw rod tip member 50a is connected to the driving horizontal rail 54 by the connecting pin 53.
By fixing the screw rod to a fixed position and moving the screw rod telescopically, a reaction force is applied to the connecting point to move the lifting machine 2 main body, and then the connecting pin 53 is pulled out to telescopically move the screw rod. By repeating this process, Move the scale.
【００４０】この横移動の場合も、電動スクリュージャ
ッキ５０の入力軸の他端部にエンコーダー５５を取付
け、集中制御盤の連動同調制御システムにより４台の扛
上機２が同期して同一方向に横移動するように制御して
いる。Also in this lateral movement, the encoder 55 is attached to the other end of the input shaft of the electric screw jack 50, and the four levitation machines 2 are synchronized in the same direction by the coordinated control system of the centralized control panel. It is controlled to move laterally.
【００４１】図１，図４に示すように、橋桁Ｇと最上段
の大型ベント部材１との間には、例えば一対の高さ調整
可能な支承装置６１を上面に、一対の支承桁６２を下面
に有する受桁装置６０を配設する。また、この受桁装置
６０の橋桁幅方向の両側には、橋桁Ｇの横ずれを阻止す
る横ずれ防止装置６３を取付ける。As shown in FIGS. 1 and 4, between the bridge girder G and the uppermost large vent member 1, for example, a pair of height-adjustable bearing devices 61 are provided on the upper surface, and a pair of bearing girders 62 are provided. The girder receiving device 60 provided on the lower surface is arranged. Further, lateral deviation prevention devices 63 for preventing lateral deviation of the bridge girder G are attached to both sides of the girder receiving apparatus 60 in the width direction of the bridge girder.
【００４２】また、図４に示すように、橋桁Ｇを横移動
させる場合には、最下段の大型ベント部材１の梁１Ｂの
突出部１Ｂ’を扛上機２上に載せる。扛上機本体フレー
ム３の一対のフレームビーム３Ａのベント部材側には、
受け台７０が取付けられており、この受け台７０上に固
定金具７１を介して前記突出部１Ｂ’を取付ける。この
場合も、固定金具７１と、突出部１Ｂ’および受け台７
０とは、ボルトで固定する。ここで、連結ピン１８は取
付けたままとし、この状態で扛上用フォーク６を少し下
げ、連結ピン１８にかかる荷重、即ちロードセル１９に
かかる荷重がなくなり、固定金具７１に橋桁Ｇおよび大
型ベント部材１の荷重が全部かかったら横移動すること
になる。Further, as shown in FIG. 4, when the bridge girder G is laterally moved, the projecting portion 1B 'of the beam 1B of the lowermost large vent member 1 is placed on the lifting machine 2. On the vent member side of the pair of frame beams 3A of the lifting machine body frame 3,
A pedestal 70 is attached, and the protruding portion 1B ′ is mounted on the pedestal 70 via a fixing metal fitting 71. Also in this case, the fixing bracket 71, the protruding portion 1B ′ and the pedestal 7
0 is fixed with bolts. Here, with the connecting pin 18 still attached, the lifting fork 6 is lowered a little in this state, and the load on the connecting pin 18, that is, the load on the load cell 19 disappears, and the fixing girder G and the large vent member are attached to the fixing metal fitting 71. When all the load of 1 is applied, it will move laterally.
【００４３】図５に示すように、ベントアップ時に仮置
き固定する場合と、橋桁扛上終了時には、最下段の大型
ベント部材１の柱１Ａの下端を固定金具８０を介して水
平ガイドレール９上に据え付ける。固定金具８０と、柱
１Ａおよび水平ガイドレール９とは、ボルトで固定す
る。この状態で、扛上機２には、橋桁荷重が作用しない
ので、連結ピン１８を抜いて大型ベント部材１と扛上機
２との連結を解除することができる。なお、仮置き固定
の場合には、この状態から扛上用フォーク６を下降さ
せ、次の上昇工程に備える。As shown in FIG. 5, at the time of temporarily placing and fixing at the time of venting up, and at the end of lifting the bridge girder, the lower end of the pillar 1A of the bottom large vent member 1 is mounted on the horizontal guide rail 9 via the fixing metal fitting 80. Install on. The fixture 80, the pillar 1A and the horizontal guide rail 9 are fixed with bolts. In this state, since the bridge girder load does not act on the lifting machine 2, the connecting pin 18 can be pulled out to release the connection between the large vent member 1 and the lifting machine 2. In the case of temporary placement and fixing, the raising fork 6 is lowered from this state to prepare for the next raising step.
【００４４】以上のような構成において、次のような施
工順序で橋桁の移設工事を行う（図６〜図９参照）。With the above construction, the bridge girder relocation work is performed in the following construction order (see FIGS. 6 to 9).
【００４５】(1) 既存の橋脚Ｐのコンクリート躯体Ｃ1
を増設し、レール据え付け用の基礎コンクリート９０を
打設する。次いで、ベントＨ形鋼９１を組み立て、この
上に一対の水平ガイドレール９を設置する。また、橋脚
Ｐに壁継ぎ兼ガイドＨ形鋼９２を取付ける。(1) Concrete skeleton C 1 of the existing pier P
Is added, and foundation concrete 90 for rail installation is placed. Next, the bent H-shaped steel 91 is assembled, and the pair of horizontal guide rails 9 is installed on this. Further, a wall joint and guide H-shaped steel 92 is attached to the pier P.
【００４６】(2) 水平ガイドレール９上に左右一対の扛
上機２を据え付け、受桁装置６０を上部に固定した最上
段の大型ベント部材１-1を左右一対の扛上用フォーク６
で吊り支持して上昇させる。(2) A pair of left and right lifting machines 2 are installed on the horizontal guide rails 9, and a large-scale vent member 1 -1 at the uppermost stage with the girder device 60 fixed to the upper part is attached to the pair of left and right lifting forks 6
Suspend and raise with.
【００４７】(3) 扛上用フォーク６で支持されている大
型ベント部材１-1の下部に、２段目の大型ベント部材１
-2をボルトで接続固定し、大型ベント部材１-1および１
-2を固定金具８０で水平ガイドレール９上に仮置き固定
する。この状態で、扛上用フォーク６と大型ベント部材
１-1の連結を外し、扛上機２を大型ベント部材１から若
干退避移動させ、扛上用フォーク６を２段目の大型ベン
ト部材１-2を吊り支持すべく下降させる。(3) At the lower part of the large vent member 1 -1 supported by the lifting fork 6, the second-stage large vent member 1 is provided.
-2 by connecting and fixing with bolts, large vent members 1 -1 and 1
-2 is temporarily placed and fixed on the horizontal guide rail 9 by the fixing bracket 80. In this state, the lifting fork 6 and the large vent member 1 -1 are disconnected, the lifting machine 2 is slightly retracted from the large vent member 1, and the lifting fork 6 is moved to the second stage large vent member 1 -Lower 2 to suspend and support.
【００４８】(4) 下降した扛上用フォーク６と２段目の
大型ベント部材１-2を連結し、扛上用フォーク６を上昇
させることにより、大型ベント部材１-1・１-2，受桁装
置６０を介して橋桁Ｇを若干扛上させる。ここでは、橋
桁Ｇと橋脚Ｐとの間に、橋桁Ｇの既存の支承を撤去する
のに十分なクリアランスが得られるようにする。[0048] (4) and the jack up fork 6 which is lowered connecting the large vent member 1 -2 2 stage, by raising the jack up fork 6, a large vent member 1 -1 1 -2, The bridge girder G is slightly lifted via the girder device 60. Here, sufficient clearance is provided between the bridge girder G and the bridge pier P to remove the existing bearing of the bridge girder G.
【００４９】(5) ２段目の大型ベント部材１-2の下部に
３段目の大型ベント部材１-3を接続固定すると共に、こ
の最下段の大型ベント部材１-3を固定金具７１により扛
上機２に載置固定し、橋桁長手方向両端部に位置する左
右一対の扛上機２を同期させて横移動させる。合計４台
の扛上機２と３段の大型ベント部材１が一体となって、
橋桁Ｇが横移動することになる。この移動に際しては、
図６（１）の壁継ぎ兼ガイドＨ形鋼９２により最上段の
大型ベント部材１-3を案内支持させておく。[0049] (5) with a 2-stage large vent member 1 -2 large vent member 1 -3 lower part of the third stage of the connecting and fixing, the fixing bracket 71 large vent member 1 -3 of the bottom It is mounted and fixed on the lifting machine 2, and the pair of left and right lifting machines 2 located at both ends in the longitudinal direction of the bridge girder are synchronously moved laterally. A total of four lifting machines 2 and three-stage large vent members 1 are integrated,
The bridge girder G will move laterally. On this move,
Allowed to guide and support the large vent member 1 -3 uppermost by a wall joint and guide H-beam 92 in FIG. 6 (1).
【００５０】(6) 横移動が完了すると、固定金具７１を
取り外した後、前述の(3),(4) の工程を繰り返し、上昇
させた３段目の大型ベント部材１-3の下部に４段目の大
型ベント部材１-4を接続固定し、次いで上昇させ、橋桁
Ｇをさらに扛上させる。[0050] (6) When the lateral movement is completed, after removal of the fixing bracket 71, the above-mentioned (3), the bottom of the steps repeated, a large vent member 1 -3 the third stage was increased (4) 4-stage large vent member 1 -4 connection fixed, then raised, to further jacked the girder G.
【００５１】(7) ４段目の大型ベント部材１-4の下部に
５段目の大型ベント部材１-5を接続すると、所定の扛上
高さが得られので、この５段目の大型ベント部材１-5を
固定金具８０により水平ガイドレール９に固定する。こ
の状態で、一対の扛上機２を次のスパンへ移動させると
ともに、嵩上げコンクリートＣ2 を打設する。なお、こ
こで、複数段の大型ベント部材１の途中を平面視でコ字
状の抱持部材９３で覆い、この抱持部材９３を壁継ぎ兼
ガイドＨ形鋼９２に固定しておく。[0051] (7) When the bottom of the large vent member 1 -4 4 stage connecting large vent member 1 -5 of 5 stage than a predetermined jack up height is obtained, a large five-stage The vent member 1-5 is fixed to the horizontal guide rail 9 by the fixing bracket 80. In this state, the pair of lifting machines 2 are moved to the next span, and the raised concrete C 2 is poured. Here, the middle of the large-sized vent member 1 having a plurality of stages is covered with a U-shaped holding member 93 in a plan view, and the holding member 93 is fixed to the wall joint / guide H-shaped steel 92 in advance.
【００５２】(8) 嵩上げコンクリートＣ2 が所定の強度
に達すると、再び扛上機２を据え付け、嵩上げコンクリ
ートＣ2 の上面に支承を配設し、扛上機２により橋桁を
若干ベントダウンさせることにより、橋桁Ｇを増設され
た橋脚Ｐ上に載置する。(8) When the raised concrete C 2 reaches a predetermined strength, the lifting machine 2 is installed again, a support is arranged on the upper surface of the raised concrete C 2 , and the bridge girder is slightly bent down by the lifting machine 2. As a result, the bridge girder G is placed on the added pier P.
【００５３】(9) 受桁装置６０および各大型ベント部材
１を扛上機２で支持しつつ下降させ、最下段から順次取
り外し、大型ベント部材１および受桁装置６０を全て撤
去する。さらに、扛上機２および水平ガイドレール９等
を撤去すれば、１スパンの工事が終了する。(9) The girder receiving device 60 and each large vent member 1 are lowered while being supported by the lifting machine 2, and are sequentially removed from the lowermost stage, and the large vent member 1 and the girder device 60 are all removed. Further, if the lifting machine 2 and the horizontal guide rail 9 are removed, the construction of one span is completed.
【００５４】なお、以上は、鉄道橋の橋桁の扛上・横移
動工事に適用した例を示したが、橋桁の扛下工事や、そ
の他の橋桁の扛上，扛下あるいは横移動工事にも本発明
を適用できることはいうまでもない。In the above, the example applied to the work of raising / moving the bridge girder of the railway bridge has been shown. However, it can be applied to the work of raising the bridge girder or raising, dropping or laterally moving other bridge girders. It goes without saying that the present invention can be applied.
【００５５】[0055]
【発明の効果】前述の通り、この発明は、以上のような
構成からなるので、次のような効果を奏する。As described above, the present invention having the above-mentioned structure has the following effects.
【００５６】(1) ベント部材を地上において継ぎ足しあ
るいは取り外して昇降させるので、橋桁の扛上扛下作業
を地上で行うことができ、従来のジャッキアップ工法に
よる高所で狭い場所での作業がなくなり、安全性が大幅
に向上し、また熟練した作業者も不要となり、省力化を
図れる。 (2) 専用の大型ベント部材を使用し、扛上機による地上
での段取り替え作業であるため、安全かつ迅速に工事を
行うことができる。(1) Since the vent member is replenished or removed on the ground to raise and lower, the work of lifting and lowering the bridge girder can be performed on the ground, and work in a high place and a narrow place by the conventional jack-up method is eliminated. The safety is greatly improved, and no skilled worker is required, so that labor can be saved. (2) Since a dedicated large vent member is used and the work is performed on the ground by a lifting machine, the work can be performed safely and quickly.
【００５７】(3) 一対の扛上機にベント部材を載置して
横移動させるため、橋桁の扛上扛下作業と同時に橋桁の
横移動作業を安全かつ迅速に行うことができる。(3) Since the vent members are placed on the pair of lifting machines and moved laterally, the lateral movement work of the bridge girders can be performed safely and quickly at the same time as the lifting work of the bridge girders.
【００５８】(4) 集中制御装置により、各扛上機を同期
して昇降制御および横移動制御するため、容易に昇降と
横移動を行えると共に、偏荷重などによる事故を防止
し、前述の(1) と相まって安全な作業が可能となる。(4) Since the raising and lowering control and the lateral movement control are synchronized with each other by the centralized control device, the raising and lowering and the lateral movement can be performed easily, and the accident due to an unbalanced load can be prevented. Combined with 1), safe work becomes possible.
【図１】この発明に係る橋桁の扛上・横移動工法の概念
を示す斜視図である。FIG. 1 is a perspective view showing the concept of a method for raising and laterally moving a bridge girder according to the present invention.
【図２】この発明に係る扛上機の正面図である。FIG. 2 is a front view of the lifting machine according to the present invention.
【図３】図２の側面図である。FIG. 3 is a side view of FIG.
【図４】この発明における橋桁の横移動状態を示す正面
図である。FIG. 4 is a front view showing a lateral movement state of the bridge girder in the present invention.
【図５】この発明における橋桁のベントアップ終了時の
状態を示す正面図である。FIG. 5 is a front view showing a state of the bridge girder at the end of venting up according to the present invention.
【図６】この発明に係る橋桁移設工事を順に示す工程図
（その１）である。（ａ）は側面図、（ｂ）は正面図で
ある。FIG. 6 is a process diagram (No. 1) sequentially showing the bridge girder relocation work according to the present invention. (A) is a side view and (b) is a front view.
【図７】この発明に係る橋桁移設工事を順に示す工程図
（その２）である。FIG. 7 is a process diagram (No. 2) sequentially showing the bridge girder relocation work according to the present invention.
【図８】この発明に係る橋桁移設工事を順に示す工程図
（その３）である。FIG. 8 is a process diagram (No. 3) sequentially showing the bridge girder relocation work according to the present invention.
【図９】この発明に係る橋桁移設工事を順に示す工程図
（その４）である。FIG. 9 is a process diagram (No. 4) sequentially showing the bridge girder relocation work according to the present invention.
Ｇ…橋桁 Ｐ…橋脚 １…大型ベント部材 １Ａ…柱 １Ｂ…梁 １Ｃ…斜材 １Ｄ…水平材 １Ｅ…吊り支持用ピン孔部 ２…扛上機 ３…扛上機本体フレーム ４…ガイドポスト ５…昇降駆動機構 ６…扛上用フォーク ７…横移動装置 ８…横移動駆動機構 ９…水平ガイドレール １０…制御盤 １１…連結部材 １２，１３，１４…昇降ガイドローラ １５…吊り支持具 １６…ナット部材 １７…取付台 １８…連結ピン １９…ロードセル ２０…昇降用モータ ２１…ウォーム減速機 ２２…スクリュージャッキ ２３…スクリューロッド ２４…エンコーダー ２５…スイベル機構 ２６…取付部材 ２７…蛇腹 ４０…ガイドローラ装置 ４１…ガイド部材 ５０…横移動用電動スクリュージャッキ ５１…横移動用モータ ５２…動力伝達機構 ５３…連結ピン ５４…駆動用水平レール ５５…エンコーダー ６０…受桁装置 ６１…支承装置 ６２…支承桁 ６３…横ずれ防止装置 ７０…受け台 ７１…固定金具 ８０…固定金具 ９０…基礎コンクリート ９１…ベントＨ形鋼 ９２…壁継ぎ兼ガイドＨ形鋼 ９３…抱持部材 G ... Bridge girder P ... Bridge pier 1 ... Large vent member 1A ... Pillar 1B ... Beam 1C ... Oblique member 1D ... Horizontal member 1E ... Suspension support pin hole 2 ... Engraving machine 3 ... Engraving machine main frame 4 ... Guide post 5 ... Lifting drive mechanism 6 ... Lifting fork 7 ... Lateral movement device 8 ... Lateral movement drive mechanism 9 ... Horizontal guide rail 10 ... Control board 11 ... Connecting member 12, 13, 14 ... Lifting guide roller 15 ... Suspension support 16 ... Nut member 17 ... Mounting base 18 ... Connection pin 19 ... Load cell 20 ... Lifting motor 21 ... Worm reducer 22 ... Screw jack 23 ... Screw rod 24 ... Encoder 25 ... Swivel mechanism 26 ... Mounting member 27 ... Bellows 40 ... Guide roller device 41 ... Guide member 50 ... Lateral movement electric screw jack 51 ... Lateral movement motor 52 ... Power transmission mechanism 53 ... Connecting pin 54 ... Dynamic horizontal rail 55 ... Encoder 60 ... Girder device 61 ... Bearing device 62 ... Bearing girder 63 ... Side slip prevention device 70 ... Cradle 71 ... Fixing metal fitting 80 ... Fixing metal fitting 90 ... Basic concrete 91 ... Vent H-shaped steel 92 ... Wall joint Combined guide H-shaped steel 93 ... Holding member
───────────────────────────────────────────────────── フロントページの続き (72)発明者 小寺 幸一 岐阜県大垣市赤坂新町４−134−１ 株 式会社野田自動車工業所内 (56)参考文献 実開 昭61−34592（ＪＰ，Ｕ) 特公 昭59−8638（ＪＰ，Ｂ２) ─────────────────────────────────────────────────── ─── Continuation of front page (72) Koichi Kodera 4-134-1, Akasaka Shinmachi, Ogaki City, Gifu Prefecture Noda Motor Co., Ltd. (56) Bibliography Sho 61-34592 (JP, U) Sho 59-8638 (JP, B2)
Claims (7)
るいは扛下する工法であって、橋桁と地上との間に配設
される複数段の単位ベント部材と、地上に設置される一
対の扛上機とを使用し、一対の扛上機により支持したベ
ント部材の最下段に単位ベント部材を継ぎ足し、あるい
は最下段の単位ベント部材を取り外し、この最下段とな
った単位ベント部材を一対の扛上機により上昇、あるい
は下降させ、この継ぎ足しと上昇、あるいは取り外しと
下降を順次繰り返して橋桁をベント部材と共に扛上さ
せ、あるいはベント部材と共に扛下させることを特徴と
する橋桁の扛上扛下工法。1. A method for supporting or supporting a bridge girder at both ends in the longitudinal direction to lift or lower the bridge girder, comprising a plurality of stages of unit vent members arranged between the bridge girder and the ground, and being installed on the ground. Using a pair of lifting machines, add a unit vent member to the bottom of the vent member supported by a pair of lifting machines, or remove the bottom unit vent member and remove the bottom unit vent member. Raising or lowering with a pair of lifting machines, and repeating this addition and lifting up, or removal and lowering to lift the bridge girder together with the vent member, or lift up together with the vent member. Captivity construction method.
て、一対の扛上機に最下段のベント部材を載置し、この
一対の扛上機を横移動させることにより、橋桁をベント
部材と共に横移動させることを特徴とする橋桁の扛上扛
下工法。2. The lifting method according to claim 1, wherein the lowermost vent member is placed on the pair of lifting machines, and the pair of lifting machines is laterally moved to vent the bridge girder. This is a bridge girder construction method that moves laterally together with the members.
に一対で地上に配設され、橋桁を支持するベント部材を
橋桁幅方向両側で支持して昇降させる扛上機であって、
昇降用のガイドポストと昇降駆動機構を備えた扛上機本
体フレームと、前記ガイドポストを案内として前記昇降
駆動機構により昇降し、突出部によりベント部材の端部
を支持する扛上用フォークを備えていることを特徴とす
る扛上機。3. A hoisting machine which is arranged on the ground in a pair in the width direction of the bridge girder at both ends in the longitudinal direction of the bridge girder, and which supports a vent member supporting the bridge girder on both sides in the bridge girder width direction to move up and down.
A lifting machine main body frame having a lifting / lowering guide post and a lifting / lowering drive mechanism, and a lifting / lowering fork for lifting and lowering by the lifting / lowering drive mechanism with the guide post as a guide and supporting an end portion of a vent member by a protruding portion. A lifter that is characterized by
機本体フレームの下部に、橋桁幅方向と平行に配設され
た水平ガイドレール上を横移動可能な横移動装置を設け
たことを特徴とする扛上機。4. The hoisting machine according to claim 3, wherein a lateral moving device is provided at a lower part of the hoisting machine main body frame, the lateral moving device being capable of laterally moving on a horizontal guide rail arranged parallel to the width direction of the bridge girder. An upgrade machine characterized by that.
上機には、各扛上機の支持荷重検出信号に基づいて各扛
上機の負荷状態を監視し、各扛上機の扛上用フォークの
昇降高さ検出信号に基づいて各扛上機の扛上用フォーク
を同期して昇降制御する集中制御装置が接続されている
ことを特徴とする扛上機。5. The hoisting machine according to claim 3, wherein each hoisting machine monitors the load state of each hoisting machine based on a support load detection signal of each hoisting machine, and each hoisting machine. A hoisting machine is connected to a centralized control device for synchronously hoisting the hoisting fork of each hoisting machine based on a hoisting height detection signal of the hoisting fork.
上機には、各扛上機の支持荷重検出信号に基づいて各扛
上機の負荷状態を監視し、各扛上機の扛上用フォークの
昇降高さ検出信号に基づいて各扛上機の扛上用フォーク
を同期して昇降制御し、各扛上機の横移動検出信号に基
づいて各扛上機を同期して横移動制御する集中制御装置
が接続されていることを特徴とする扛上機。6. The hoisting machine according to claim 4, wherein each hoisting machine monitors the load state of each hoisting machine based on a support load detection signal of each hoisting machine, and each hoisting machine The lifting fork of each lifting machine is synchronously controlled based on the lifting height detection signal of each lifting machine, and each lifting machine is synchronized based on the lateral movement detection signal of each lifting machine. A lifting machine characterized by being connected to a centralized control device for lateral movement control.
単位ベント部材であって、鉄骨柱と鉄骨梁を備え、鉄骨
梁は鉄骨柱から外方に突出した突出部を扛上機の扛上用
フォークに連結して扛上扛下時に荷重を受け、鉄骨柱は
上下に着脱可能に連続可能で扛上扛下後に荷重を受ける
鉄骨柱梁構造であることを特徴とするベント部材。7. A multi-stage unit vent member arranged between a bridge girder and the ground, comprising a steel frame column and a steel frame beam, and the steel frame beam has a protrusion protruding outward from the steel frame column. Vent characterized by a steel column beam structure that is connected to the lifting fork of the machine and receives a load during the lifting, and the steel column can be continuously attached to and detached from the top and bottom and receives the load after the lifting. Element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23312294A JP2563762B2 (en) | 1994-09-28 | 1994-09-28 | Bridge girder uplifting method, uplifting machine and vent member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23312294A JP2563762B2 (en) | 1994-09-28 | 1994-09-28 | Bridge girder uplifting method, uplifting machine and vent member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0892916A JPH0892916A (en) | 1996-04-09 |
| JP2563762B2 true JP2563762B2 (en) | 1996-12-18 |
Family
ID=16950107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23312294A Expired - Fee Related JP2563762B2 (en) | 1994-09-28 | 1994-09-28 | Bridge girder uplifting method, uplifting machine and vent member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2563762B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100580225B1 (en) * | 2004-12-13 | 2006-05-16 | 노윤근 | Upper structure raising method using bridge upper structure support and lift equipment and this |
| JP4507913B2 (en) * | 2005-02-24 | 2010-07-21 | 山九株式会社 | Transporting and loading heavy objects |
| KR101028869B1 (en) * | 2008-09-22 | 2011-04-12 | 진성토건 주식회사 | Temporary structure apparatus precast end segment for bridge |
| JP2016069918A (en) * | 2014-09-30 | 2016-05-09 | 日本車輌製造株式会社 | Bent assembly device and bent assembly method |
| CN110983996A (en) * | 2019-12-06 | 2020-04-10 | 中铁四院集团岩土工程有限责任公司 | Beam body jacking and deviation rectifying method for high-speed railway bridge |
| CN111794125B (en) * | 2020-05-19 | 2021-12-24 | 陕西高速公路工程咨询有限公司 | Adjusting device and method for controlling height difference of closure section of curved bridge |
| CN113235443B (en) * | 2021-05-20 | 2022-05-31 | 广西路桥工程集团有限公司 | Pre-pressing construction method of assembly type 0# block construction bracket |
-
1994
- 1994-09-28 JP JP23312294A patent/JP2563762B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0892916A (en) | 1996-04-09 |
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