JP5051591B2 - Precast PC plate erection device for floor slab and its erection method - Google Patents

Precast PC plate erection device for floor slab and its erection method Download PDF

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JP5051591B2
JP5051591B2 JP2008198331A JP2008198331A JP5051591B2 JP 5051591 B2 JP5051591 B2 JP 5051591B2 JP 2008198331 A JP2008198331 A JP 2008198331A JP 2008198331 A JP2008198331 A JP 2008198331A JP 5051591 B2 JP5051591 B2 JP 5051591B2
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precast
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floor
erection
floor slab
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JP2010037727A (en
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俊治 畑仲
豊 加藤
拓郎 豊島
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株式会社ピーエス三菱
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本発明は、床版用プレキャストPC板を橋桁上の所望の架設位置まで橋軸方向に向けて搬送し、架設位置手前で所望の架設角度に旋回させ、然る後架設位置へ移動させて架設するための床版用プレキャストPC板架設装置及びその方法に関する。   The present invention conveys the precast PC board for floor slabs to the desired erection position on the bridge girder in the direction of the bridge axis, turns it to the desired erection angle before the erection position, and then moves it to the erection position and installs it. The present invention relates to a precast PC plate erection device for floor slab and a method thereof.

近年、鋼桁を使用した橋梁の床版では、耐久性を考慮してPC(プレストレストコンクリート)床版が使用される事が多く、特に急速施工が望まれる場所では床版用プレキャストPC板を並べて架設することにより床版を構築する方法が採用されている。     In recent years, PC (prestressed concrete) floor slabs are often used for bridge slabs using steel girders, and precast PC plates for floor slabs are arranged side by side, especially in places where rapid construction is desired. A method of building a floor slab by erection is adopted.

一般に、床版用プレキャストPC板の架設は、桁下からトラッククレーンを使用して架設する場合が多いが、桁下にトラッククレーンが近づけない河川や交差道路のような場所では、橋上より専用の架設装置を使用して架設されている。   Generally, precast PC boards for floor slabs are often installed from under the girder using a truck crane. However, in places such as rivers and crossing roads where the truck crane cannot be approached under the girder, it is more dedicated than the bridge. It is erected using an erection device.

従来の架設装置は、図8〜図10に示すように、桁上に設置した既設の床版1上にレール3を敷設し、その上に搬送台車4及び架設機5を移動可能に載せ、搬送台車4は新たに架設しようとする床版用プレキャストPC板2を橋軸方向に対して直交する向きにして搭載して架設機5の手前位置まで搬送するようにしている。   As shown in FIGS. 8 to 10, the conventional erection apparatus lays a rail 3 on an existing floor slab 1 installed on a girder, and movably mounts a transport carriage 4 and an erection machine 5 thereon, The transport cart 4 is mounted with the precast PC plate 2 for floor slab to be newly installed in a direction orthogonal to the bridge axis direction and transported to a position before the installation machine 5.

架設機5は、走行台車6上に旋回架台7が設置され、その旋回架台7から突出させた吊り持ち用の片持式水平梁8を有しており、その水平梁8の先端に吊り装置9を備えた構造となっている。   The framing machine 5 is provided with a swivel base 7 on a traveling carriage 6, and has a cantilever type horizontal beam 8 for suspension that protrudes from the swivel base 7, and a suspension device is attached to the tip of the horizontal beam 8. 9 is provided.

床版用プレキャストPC板の架設に際しては、図8に示すように、架設機5を既設床版1の先端部分に移動させておき、搬送台車4上に床版用プレキャストPC板2を載せて架設機5の手前位置まで搬送し、この床版用プレキャストPC板2上に吊り装置9が来るように走行台車6及び旋回架台7を操作し、図9に示すように、搬送台車4上の床版用プレキャストPC板2を吊り装置9によって吊り上げる。この状態で旋回架台7を旋回させて床版用プレキャストPC板2を架設機5の後方側から前方側、即ち架設位置側に旋回移動させ、図10に示すように、走行架台6を移動させて床版用プレキャストPC板2を架設位置上に移動させて吊り降ろすようにしている。   When laying the precast PC plate for floor slab, as shown in FIG. 8, the laying machine 5 is moved to the tip of the existing floor slab 1 and the precast PC plate 2 for floor slab is placed on the carriage 4. The transport cart 6 and the swivel mount 7 are operated so that the suspension device 9 comes on the precast PC plate 2 for floor slabs, as shown in FIG. The floor cast precast PC plate 2 is lifted by a lifting device 9. In this state, the swivel base 7 is swung so that the precast PC plate 2 for floor slab is swung from the rear side of the laying machine 5 to the front side, that is, the erection position side, and the travel base 6 is moved as shown in FIG. Then, the precast PC plate 2 for floor slab is moved to the erection position and suspended.

上記従来装置では、床版用プレキャストPC板2を旋回架台7に支持させて旋回する際に、床版用プレキャストPC板2が既設の床版1の側部にはみ出すため、安定性を保つ為の工夫が必要であり、また、既設床版1の近くに建物等の障害物があって旋回の為のスペースが十分に無い場合がある。この問題を解決しようとするものとして、図11、図12に示す架設機10のように、走行台車11の片側に立設した支柱部材12の上端に走行台車11の中央部分上に張り出した上部フレーム12を設け、その下面に橋軸方向に向けた懸垂用レール13を設置し、この懸垂用レール13に支持させたトロリー15に吊り装置16を支持させたものを使用し、搬送台車5によって搬送されてきた床版用プレキャストPC板2を、吊り装置16により吊り上げ、その位置で吊り上げた床版用プレキャストPC板2を橋軸方向に向くように旋回させ、この状態で上部フレーム12下を架設機10の反対側まで移動させ、然る後橋軸方向と直交する方向に旋回させた後、架設位置に吊り降ろす装置が開発されている(特許文献1)。
特開2005−307684号公報
In the conventional apparatus, when the precast PC plate 2 for floor slab is supported by the swivel base 7 and swiveled, the precast PC plate 2 for floor slab protrudes to the side of the existing floor slab 1 so that stability is maintained. In some cases, there is an obstacle such as a building near the existing floor slab 1 and there is not enough space for turning. As an attempt to solve this problem, as in the construction machine 10 shown in FIGS. 11 and 12, the upper portion of the traveling carriage 11 that protrudes from the upper end of the support member 12 erected on one side of the traveling carriage 11. A frame 12 is provided, a suspension rail 13 directed in the direction of the bridge axis is installed on the lower surface thereof, and a trolley 15 supported by the suspension rail 13 is used to support a suspension device 16. The floor slab precast PC plate 2 that has been transported is lifted by the lifting device 16, and the floor slab precast PC plate 2 lifted at that position is swung in the direction of the bridge axis. An apparatus has been developed that is moved to the opposite side of the erection machine 10 and swung in a direction perpendicular to the rear bridge axis direction and then suspended at the erection position (Patent Document 1).
JP 2005-307684 A

上述した従来の装置では、架設機の手前側位置からか架設位置側までの移動を、床版用プレキャストPC板を吊り上げた状態で架設機を旋回するか、吊り上げた状態で旋回させ、架設機の上部フレーム下を架設機の架設位置側まで移動させて再度旋回させるものであるため、架設機の構造が複雑となり、製造コストが高い。また、安定性確保のためには重量も大きくする必要があり既設床版に大きな負荷がかかり、移動も困難である。更には、架設機による床版用プレキャストPC板の吊り上げ(荷取り)、旋回、移動、架設の作業中にも台車反力が不均一となり、安定性が悪くなる状況があるなどの問題があった。   In the above-mentioned conventional apparatus, the construction machine is swung with the precast PC board for floor slab being lifted or swung in the state of being lifted, and moved from the near side position of the construction machine to the construction position side. Is moved to the erection position side of the erection machine and swiveled again, so that the structure of the erection machine becomes complicated and the manufacturing cost is high. Moreover, in order to ensure stability, it is necessary to increase the weight, a large load is applied to the existing floor slab, and movement is difficult. Furthermore, there is a problem that the reaction force of the carriage becomes non-uniform and the stability is deteriorated even during the lifting (loading), turning, moving, and erection work of the precast PC board for floor slab by the erection machine. It was.

本発明はこのような従来の問題に鑑み、架設のための装置が簡略化されるとともに、装置全体が軽量となり、床版用プレキャストPC板の移動、旋回、架設の作業が常に安定した状態でなされる床版用プレキャストPC板架設装置及びその架設方法の提供を目的としてなされたものである。   In view of such a conventional problem, the present invention simplifies the apparatus for erection, makes the entire apparatus lighter, and keeps the work of moving, turning, and erection of the precast PC plate for floor slabs constantly. It is made for the purpose of providing the precast PC board erection apparatus for floor slabs made, and its erection method.

上述の如き従来の問題を解決し、所期の目的を達成するための請求項1に記載の発明の特徴は、橋桁上に架設された既設床版上に橋軸方向に向けて設置した搬送台車用レールと、該搬送台車用レールの外側にこれと並行に設置した架設機用レールと、前記搬送台車用レール上を移動できる床版用プレキャストPC板搬送用台車と、前記架設機用レール上を移動できる架設機とを有し、前記床版用プレキャストPC板搬送用台車は、床版用プレキャストPC板の中央部分を支持し、これを水平方向に旋回できる旋回台を備えた旋回台付台車と、前記橋軸方向に向けた床版用プレキャストPC板の両端部を支持する一対の端部支持用台車とをもって構成され、前記架設機は、前記搬送台車用レールの上方を跨いで前記架設機用レール上を移動でき、且つ内部を前記床版用プレキャストPC板を橋軸方向に向けて搭載した前記床版用プレキャストPC板搬送台車が通過できる門型架台と、該門型架台の頂部より床版用プレキャストPC板架設部側に向けて橋軸方向に突出させた片持式水平梁と、該片持式水平梁の突出部分に支持され、床版用プレキャストPC板を吊り持ちして昇降させる吊り装置とから構成され、前記旋回台付台車上で橋軸と交差する向きに旋回された状態の床版用プレキャストPC板を前記吊り装置で吊り上げ、門型架台を移動させて架設位置まで搬送できるようにしてなる床版用プレキャストPC板架設装置にある。   The feature of the invention described in claim 1 for solving the conventional problems as described above and achieving the intended purpose is that the transport installed in the direction of the bridge axis on the existing floor slab installed on the bridge girder. A rail for a carriage, a rail for an erection machine installed in parallel with the outer side of the rail for the carriage, a precast PC board carriage for a floor slab that can move on the rail for the carriage, and the rail for the erection machine The floor slab precast PC board carriage is provided with a slewing base that supports a central portion of the floor slab precast PC board and that can turn the slab horizontally. And a pair of end support carts that support both ends of the precast PC plate for floor slabs facing the bridge axis direction, and the construction machine straddles over the rails for the transport cart It can move on the rail for the construction machine And a portal pedestal through which the precast PC board transportation carriage for floor slabs, in which the precast PC board for floor slabs is mounted in the direction of the bridge axis, and the precast PC board for floor slab installation from the top of the portal gantry A cantilever type horizontal beam that protrudes in the direction of the bridge axis toward the section side, and a suspension device that is supported by the protruding part of the cantilever type horizontal beam and lifts and lowers the precast PC board for floor slab The precast PC plate for floor slab that has been swung in a direction crossing the bridge axis on the carriage with the swivel platform is lifted by the suspension device, and the portal frame can be moved to be transported to the installation position. It is in the precast PC board erection device for floor slabs.

請求項2に記載の発明の特徴は、請求項1に記載の床版用プレキャストPC板架設装置 を使用し、前記3台の台車からなる床版用プレキャストPC板搬送台車上に床版用プレキャストPC板を橋軸方向に向けて搭載し、これを前記門型架台内を通過させて架設機より床版用プレキャストPC板架設位置側まで移動させ、然る後、床版用プレキャストPC板を旋回台付台車の旋回台上のみに支持させ、該旋回台により床版用プレキャストPC板を橋軸方向に交差する所望の角度まで旋回させ、然る後前記架設機の門型架台を移動させて床版用プレキャストPC板上にまで前記吊り装置を移動させ、該吊り装置によって床版用プレキャストPC板を吊り上げ、該床版用プレキャストPC板が所望の架設位置上に至るまで門型架台を移動させ、該架設位置にて床版用プレキャストPC板を吊り降ろす床版用プレキャストPC板架設方法にある。   A feature of the invention described in claim 2 is that the precast PC board erection device for floor slabs according to claim 1 is used, and the precast PC board for floor slabs is placed on the precast PC board transport carriage for floor slabs composed of the three carriages. The PC board is mounted in the direction of the bridge axis, and this is passed through the portal frame and moved from the laying machine to the precast PC board installation position side for the floor slab. It is supported only on the swivel of the car with swivel, and the swivel is used to turn the precast PC plate for floor slab to a desired angle that intersects the bridge axis direction, and then the portal frame of the installation machine is moved. The suspension device is moved onto the precast PC plate for the floor slab, the precast PC plate for the floor slab is lifted by the suspension device, and the gate-type gantry is moved until the precast PC plate for the floor slab reaches the desired installation position. Move In the floor slab for precast PC plate construction method to unload hanging for the floor slab precast PC board at the set position.

請求項3に記載の発明の特徴は、請求項2の構成に加え、床版用プレキャストPC板の上面又は下面に該床版用プレキャストPC板の自重による発生する断面力に対抗する仮補強鋼材を添わせて固定した状態で、前記床版用プレキャストPC板搬送台車への搭載から架設までの工程を行なうことにある。   The invention according to claim 3 is characterized in that, in addition to the structure of claim 2, temporary reinforcing steel material that resists the cross-sectional force generated by the weight of the precast PC plate for floor slab on the upper surface or the lower surface of the precast PC plate for floor slab In this state, the process from the mounting to the precast PC board conveying cart for floor slab to the installation is performed.

本発明においては、床版用プレキャストPC板搬送台車として、床版用プレキャストPC板の中央部分を支持する旋回台付台車と両端を支持する一対の端部支持用台車とをもって構成させ、床版用プレキャストPC板をこれらの台車によって縦向きにして既設床版上を搬送させるようにし、床版用プレキャストPC板の旋回は、レール上の旋回台付台車上に支持させた状態で行なうこととなり、既設床版上で、その外側にはみ出すことなく、安定した状態で安全に行なう事ができる。   In the present invention, the floor slab precast PC board conveying carriage is constituted by a car with a swivel base that supports the central portion of the floor cast precast PC board and a pair of end support carriages that support both ends, The precast PC board for the slab is transported on the existing floor slab vertically by these carts, and the precast PC board for the floor slab is swung while being supported on the carriage with the swivel platform on the rail. On the existing floor slab, it can be safely performed in a stable state without protruding to the outside.

また、架設機は、台車に搭載された床版用プレキャストPC板が内部を通過できる門型に形成され、前記床版用プレキャストPC板搬送台車用のレールの外側に設置したレール上を移動できるようにしたことにより、床版用プレキャストPC板搬送用台車の移動作業と並行してとは別個に作業ができることとなり、施工性が向上する。   Further, the erection machine is formed in a gate shape through which the precast PC board for floor slab mounted on the carriage can pass through, and can be moved on the rail installed outside the rail for the precast PC board conveying carriage for floor slab. By doing in this way, work can be performed separately from the movement work of the precast PC board conveying carriage for floor slabs, and workability is improved.

また、床版用プレキャストPC板搬送台車はとして3台の台車を使用し、床版用プレキャストPC板を橋軸方向に向けて搬送するものであるため、既設床版上を搬送するために必要なスペースが少なくなり、他の作業機器類を床版上に残し、他の作業を進行させつつ床版用プレキャストPC板の架設作業ができることとなり、作業効率が良いものとなる。   In addition, the precast PC board transportation cart for floor slabs is used for transporting the precast PC board for floor slabs in the direction of the bridge axis because it uses three carts. Therefore, the work space is reduced, and other work equipments are left on the floor slab, and the precast PC board for floor slab can be installed while the other work is progressed, so that the work efficiency is improved.

更に、3台の台車を使用して床版用プレキャストPC板を搬送するものであるため、特に端部支持用台車は簡易な構造のものでよく、また、架設機はそれ自体の移動と床版用プレキャストPC板の昇降操作ができればよいため、必要とする個々の装置の構成が単純化されるとともに軽量化されて全体としてコストが削減されるとともに、仮置き状態の既設床版に与える負荷も小さくなる。   Furthermore, since the three trolleys are used to transport the precast PC board for floor slabs, the end support trolleys in particular may have a simple structure, and the erection machine can move and floor itself. Since it is only necessary to be able to lift and lower the precast PC plate for the plate, the configuration of each required device is simplified and the weight is reduced, and the cost is reduced as a whole, and the load applied to the temporarily placed existing floor slab Becomes smaller.

また、架設される床版用プレキャストPC板の上面又は下面に該床版用プレキャストPC板の自重により発生する断面力に対抗する仮補強鋼材を添わせて固定した状態で、前記床版用プレキャストPC板搬送台車への搭載から架設までの工程を行なうようにしたことにより、作業中に発生する床版用プレキャストPC板の断面力に対しても安全な状態で作業ができる。   In addition, the precast floor slab precast is fixed in a state in which a temporary reinforcing steel material that resists the cross-sectional force generated by the weight of the precast PC plate for floor slab is attached to the upper or lower surface of the precast PC plate for floor slab. By performing the steps from mounting on the PC board conveying cart to erection, the work can be performed in a safe state against the cross-sectional force of the precast PC board for floor slab generated during the work.

次に本発明の実施の形態を図1〜図7に示した実施例に基づいて説明する。図1〜図3は、本発明に係る装置の全体の構成を簡略化して示している。図において符号20は鋼桁であり、21は床版用プレキャストPC板22を仮置きして架設された既設床版である。この既設床版21上に、橋軸方向に向けて搬送台車用レール23,23が敷設され、その外側にこれと並行配置に架設機用レール24,24が敷設されている。   Next, embodiments of the present invention will be described based on the examples shown in FIGS. 1 to 3 show a simplified overall configuration of an apparatus according to the present invention. In the figure, reference numeral 20 is a steel girder, and 21 is an existing floor slab constructed by temporarily placing a precast PC plate 22 for floor slab. On this existing floor slab 21, rails 23 and 23 for conveying carts are laid in the direction of the bridge axis, and rails 24 and 24 for construction machines are laid on the outside of the rails in parallel with the rails.

搬送台車用レール23,23上には、3台を一組とした床版用プレキャストPC板搬送用台車25,26,26が走行可能に載せられている。この各台車は、床版用プレキャストPC板22を橋軸方向に向けた状態で搭載して移動できるようにしているものであり、3台の内の中央には旋回台付台車25、その前後側に端部支持用台車26,26が配置されている。   On the transport carriage rails 23, 23, floor slab precast PC board transport carriages 25, 26, 26, which are a set of three, are movably mounted. Each of these carts is mounted with a precast PC plate 22 for floor slabs so that it can be moved in the direction of the bridge axis. End support trolleys 26, 26 are arranged on the side.

旋回台付台車25は、下部に車輪を有する走行台27の上に水平方向に旋回できる旋回台28が載せられており、その上面に枕材29を介して床版用プレキャストPC板22の中央部分下面が支持されるようになっている。   In the carriage 25 with a swivel base, a swivel base 28 that can turn in a horizontal direction is placed on a traveling base 27 having wheels at the bottom, and the center of the precast PC plate 22 for floor slabs is placed on the upper surface thereof via a pillow material 29. The partial lower surface is supported.

端部支持用台車26,26は旋回台付台車25の前後に配置されていて、その上面の載荷台30上に枕材31を介して床版用プレキャストPC板22の両端部下面が支持されるようになっている。尚、図には示してないが、この枕材31には、上向きのジャッキが備えられ、このジャッキを介して床版用プレキャストPC板22の端部下が載荷されるようになっている。   The end support carriages 26 and 26 are arranged in front of and behind the carriage 25 with swivel carriage, and the lower surfaces of both end portions of the precast PC plate 22 for floor slabs are supported on the loading platform 30 on the upper surface via pillows 31. It has become so. Although not shown in the figure, the pillow 31 is provided with an upward jack, and the bottom of the precast PC plate 22 for floor slab is loaded via the jack.

架設機用レール24,24上には架設機35が移動可能に載せられている。この架設機35は、レール24,24上を移動できる門型架台36を有している。この門型架台36は、天井横梁37aとその両端下に一体化させた脚37b,37bとによって門型に形成された一対の門型構37,37と、それらの天井横梁37a,37aの上に跨らせて固定した一対の縦梁38、38とによって構成されており、各脚37bの下端にはレール上に載荷される走行用車輪39それぞれ備えられている。   A construction machine 35 is movably mounted on the construction machine rails 24, 24. This erection machine 35 has a gate-type gantry 36 that can move on the rails 24, 24. The gate-type gantry 36 includes a pair of gate-shaped structures 37 and 37 formed in a gate shape by the cross beams 37a and legs 37b and 37b integrated under both ends thereof, and the top of the cross beams 37a and 37a. And a pair of longitudinal beams 38, 38, which are fixed to each other, and are provided with traveling wheels 39 loaded on rails at the lower ends of the legs 37b.

この門型架台35は、その門型内を前述した台車25,26,26上の床版用プレキャストPC板22を搭載した状態で通過できる大きさに形成されている。   The portal frame 35 is formed in such a size that it can pass through the portal frame in a state in which the precast PC plate 22 for floor slabs on the carts 25, 26, 26 described above is mounted.

門型架台35には、床版用プレキャストPC板新規架設部側に向けて片持式水平梁40、40が突設されている。この水平梁40は、前述した縦梁38を天井横梁37a,37a間の間隔より長く形成しておき、その先端を新規架設部側に突出させて構成させている。   Cantilever type horizontal beams 40 and 40 are projected from the gate-type gantry 35 toward the precast PC board new erection part side of the floor slab. The horizontal beam 40 is configured such that the above-described vertical beam 38 is formed longer than the interval between the ceiling horizontal beams 37a and 37a, and the tip of the horizontal beam 40 protrudes toward the new installation portion side.

水平梁40、40の先端部には、吊り装置45,45が支持されている。この吊り装置45,45は、それらから下向きに垂下した吊り材46を昇降させるものであり、例えば、電動のワイヤー巻き上げ機やチェンブロック、更には油圧シリンダーが使用できる。吊り材46の下端には吊り金具47が連結されている。   Suspension devices 45 and 45 are supported at the front ends of the horizontal beams 40 and 40. The suspension devices 45 and 45 are for lifting and lowering the suspension member 46 that hangs downward from them. For example, an electric wire hoisting machine, a chain block, and a hydraulic cylinder can be used. A suspension fitting 47 is connected to the lower end of the suspension member 46.

次に上述した床版用プレキャストPC板架設装置を使用した床版用プレキャストPC板22の架設方法を、図1、図4〜図7について説明する。   Next, a method of laying the precast PC plate 22 for floor slabs using the above-described precast PC plate laying device for floor slabs will be described with reference to FIGS. 1 and 4 to 7.

図1に示すように、新規に架設しようとする床版用プレキャストPC板22は、その上面にH型鋼からなる仮補強材50を固定した状態で中央部分を旋回台付台車25に、両端部を端部支持用台車26,26上に支持させ、搬送台車用レール23,23上を橋軸方向に向けた状態で、床版21上を該床版端部の架設位置側に搬送する。このとき、架設機35は、架設位置より床版用プレキャストPC板22の長さ分以上手前位置に待機させておく。   As shown in FIG. 1, the precast PC plate 22 for floor slabs to be newly installed has a central portion on the swivel-equipped carriage 25 with the temporary reinforcing material 50 made of H-shaped steel fixed to the upper surface thereof. Is supported on the end support carriages 26, 26, and the floor slab 21 is transported to the erection position side of the floor slab end with the transport carriage rails 23, 23 facing the bridge axis direction. At this time, the laying machine 35 is kept waiting at a position that is at least the length of the precast PC plate 22 for floor slabs from the laying position.

台車25,26,26に搭載した状態で搬送されてくる床版用プレキャストPC板22を、図4に示すように、待機している架設機35の門型内を通過させて架設位置側に移動させる。然る後、両端部支持用台車26,26による床版用プレキャストPC板22の支持を解く。この操作は、例えば、枕材31と床版用プレキャストPC板22間のジャッキを縮めて床版用プレキャストPC板の載荷状態を解くことにより行なう。   As shown in FIG. 4, the precast PC plate 22 for floor slab transported in the state of being mounted on the carriages 25, 26, 26 is passed through the portal shape of the waiting erection machine 35 to the erection position side. Move. Thereafter, the support of the precast PC plate 22 for floor slabs by the both-end support carts 26, 26 is released. This operation is performed by, for example, shrinking the jack between the pillow 31 and the floor slab precast PC board 22 to release the loading state of the floor slab precast PC board.

次いで図5に示すように、旋回台付台車25の旋回台28を旋回させて床版用プレキャストPC板22を橋軸方向と交差する架設向きに至るまで旋回させる。この旋回は旋回台25に電動の旋回駆動機構を設置しておき、電動によって行なっても良く、旋回駆動機構を備えていない場合には人力により床版用プレキャストPC板22を旋回させる。   Next, as shown in FIG. 5, the turntable 28 of the turntable-equipped carriage 25 is turned to turn the precast PC plate 22 for floor slabs until the installation direction intersects the bridge axis direction. This turning may be performed by installing an electric turning drive mechanism on the turntable 25, and when the turning drive mechanism is not provided, the floor precast PC plate 22 is turned manually.

次いで図6に示すように、架設機35を床版用プレキャストPC板22の手前位置まで前進させることにより水平梁40の吊り装置45を床版用プレキャストPC板22上位置に移動させる。次いで、吊り材46を降下させ、吊り金具47によって床版用プレキャストPC板22上に添わせてある仮補強材50に固定して吊り上げ、床版用プレキャストPC板22を旋回台付台車25上から架設機35に荷取りする。   Next, as shown in FIG. 6, the suspending device 45 of the horizontal beam 40 is moved to a position on the precast PC plate 22 for floor slab by moving the laying machine 35 to a position before the precast PC plate 22 for floor slab. Next, the suspension material 46 is lowered and fixed to the temporary reinforcing material 50 attached to the floor slab precast PC plate 22 by the suspension metal fitting 47 and lifted, and the floor slab precast PC plate 22 is placed on the carriage 25 with a swivel base. To the construction machine 35.

然る後図7に示すように、架設機35を架設位置側に移動させて床版用プレキャストPC板22を架設位置上に移動させる。次いで吊り装置45により床版用プレキャストPC板22を吊り降ろし、指定の位置に架設する。この架設機35の移動は、台車25,26,26を跨いでなされ、床版用プレキャストPC板22の架設機35による移動及び架設の間に、各台車25,26を、図6に示すように、搬送台車用レール23,23上を戻り方向に移動させ、次の床版用プレキャストPC板搬送作業に備える。架設機35は、床版用プレキャストPC板22の架設作業完了後、その位置より次に搬送されてくる床版用プレキャストPC板の長さ分以上の距離を戻り方向に移動させ、次の架設作業に備える。   Thereafter, as shown in FIG. 7, the laying machine 35 is moved to the erection position side, and the floor cast precast PC plate 22 is moved to the erection position. Subsequently, the precast PC board 22 for floor slabs is suspended by the suspension device 45 and installed at a specified position. The movement of the erection machine 35 is made across the trolleys 25, 26, 26. During the movement and erection of the precast PC plate 22 for floor slab by the erection machine 35, the trolleys 25, 26 are shown in FIG. Then, the transport carriage rails 23, 23 are moved in the return direction to prepare for the next floor slab precast PC board transport operation. After the construction work of the precast PC plate 22 for floor slabs is completed, the laying machine 35 moves a distance equal to or longer than the length of the precast PC plate for floor slab transported next from the position in the return direction. Prepare for work.

尚、上述した実施例では、端部支持用台車26による床版用プレキャストPC板端部支持を解除し、旋回台付台車25のみに支持させる方式として、枕材にジャッキを付設した場合を示しているが、旋回台付台車25の旋回台をジャッキによって昇降できるようにしておき、該ジャッキにより床版用プレキャストPC板を上昇させることによって端部支持台車26に対する載荷状態を解除しても良い。   In addition, in the Example mentioned above, the case where the jack was attached to the pillow material was shown as a system which cancels | releases the precast PC board edge part support for floor slabs by the edge part support cart 26, and is supported only by the cart 25 with a turntable. However, the loading state with respect to the end support carriage 26 may be canceled by allowing the swivel base of the car 25 with a swivel base to be moved up and down by a jack and raising the precast PC plate for the floor slab by the jack. .

本発明に係る装置の概略構成を示す側面図である。It is a side view which shows schematic structure of the apparatus based on this invention. 同上の平面図である。It is a top view same as the above. 同上の拡大正面図である。It is an enlarged front view same as the above. 図1に示す装置を使用した方法における床版用プレキャストPC板を、架設機内を通過させて搬送している状態の側面図である。It is a side view in the state where the precast PC board for floor slabs in the method using the device shown in FIG. 同、床版用プレキャストPC板を架設時の向きにさせた状態の側面図である。It is a side view of the state which made the precast PC board for floor slabs face in the direction at the time of erection. 同、床版用プレキャストPC板を架設機に荷取りした状態の側面図である。It is a side view of the state which unloaded the precast PC board for floor slabs to the construction machine. 同、床版用プレキャストPC板を架設している状態の側面図である。It is a side view of the state which has built the precast PC board for floor slabs. 従来の床版用プレキャストPC板架設装置の一例を示すもので、架設機に荷取りした状態を示す側面図である。It is a side view which shows an example of the conventional precast PC board erection apparatus for floor slabs, and shows the state which loaded the erection machine. 同上の、架設機による旋回状態を示す側面図である。It is a side view which shows the turning state by a construction machine same as the above. 同上の架設状態を示す側面図である。It is a side view which shows the construction state same as the above. 他の従来の架設機を示す正面図である。It is a front view which shows the other conventional construction machine. 同、側面図である。FIG.

符号の説明Explanation of symbols

20 鋼桁
21 既設床版
22 床版用プレキャストPC板
23 搬送台車用レール
24 架設機用レール
25 旋回台付台車
26 端部支持用台車
27 走行台
28 旋回台
29 枕材
30 載荷台
31 枕材
35 架設機
36 門型架台
37 門型構
37a 天井横梁
37b 脚
38 縦梁
39 走行用車輪
40 片持式水平梁
45 吊り装置
46 吊り材
47 吊り金具
50 仮補強材
20 Steel Girder 21 Existing Floor Slab 22 Precast PC Plate for Floor Slab 23 Rail for Carriage 24 Rail for Construction Machine 25 Carriage with Swivel Platform 26 Carriage for End Support 27 Traverse 28 Swivel Platform 29 Pillow Material 30 Loading Base 31 Pillow Material 35 Construction Machine 36 Gate-type Base 37 Gate-type Structure 37a Ceiling Horizontal Beam 37b Leg 38 Vertical Beam 39 Traveling Wheel 40 Cantilevered Horizontal Beam 45 Lifting Device 46 Hanging Material 47 Hanging Bracket 50 Temporary Reinforcement Material

Claims (3)

橋桁上に架設された既設床版上に橋軸方向に向けて設置した搬送台車用レールと、該搬送台車用レールの外側にこれと並行に設置した架設機用レールと、前記搬送台車用レール上を移動できる床版用プレキャストPC板搬送用台車と、前記架設機用レール上を移動できる架設機とを有し、
前記床版用プレキャストPC板搬送用台車は、床版用プレキャストPC板の中央部分を支持し、これを水平方向に旋回できる旋回台を備えた旋回台付台車と、前記橋軸方向に向けた床版用プレキャストPC板の両端部を支持する一対の端部支持用台車とをもって構成され、
前記架設機は、前記搬送台車用レールの上方を跨いで前記架設機用レール上を移動でき、且つ内部を前記床版用プレキャストPC板を橋軸方向に向けて搭載した前記床版用プレキャストPC板搬送台車が通過できる門型架台と、該門型架台の頂部より床版用プレキャストPC板架設部側に向けて橋軸方向に突出させた片持式水平梁と、該片持式水平梁の突出部分に支持され、床版用プレキャストPC板を吊り持ちして昇降させる吊り装置とから構成され、
前記旋回台付台車上で橋軸と交差する向きに旋回された状態の床版用プレキャストPC板を前記吊り装置で吊り上げ、門型架台を移動させて架設位置まで搬送できるようにしてなる床版用プレキャストPC板架設装置。
A rail for a transport carriage installed on an existing floor slab installed on a bridge girder in the direction of the bridge axis, a rail for a construction machine installed in parallel to the outside of the rail for the transport carriage, and the rail for the transport carriage It has a precast PC board carriage for floor slab that can move on, and an erection machine that can move on the rail for the erection machine,
The floor slab precast PC board transporting carriage supports the central part of the floor slab precast PC board, and is provided with a car with a swivel that has a swivel that can be turned in a horizontal direction, and is directed in the bridge axis direction. It is composed of a pair of end support carts that support both ends of the precast PC plate for floor slabs,
The precast PC for floor slab, which can move on the rail for the construction machine across the rail for the carriage, and has the precast PC plate for floor slab mounted in the direction of the bridge axis. A gate-type pedestal through which a plate carriage can pass, a cantilevered horizontal beam projecting in the direction of the bridge axis from the top of the gate-type pedestal toward the precast PC plate erection side of the floor slab, and the cantilevered horizontal beam Is supported by the projecting portion of, and is composed of a lifting device that lifts and lowers a precast PC board for floor slab,
A floor slab that allows a precast PC plate for a floor slab in a state of being swung in a direction intersecting with a bridge axis on the carriage with a swivel to be lifted by the suspension device and moved to a laying position by moving a gate-type frame. Precast PC board erection device.
請求項1に記載の床版用プレキャストPC板架設装置を使用し、前記3台の台車からなる床版用プレキャストPC板搬送台車上に床版用プレキャストPC板を橋軸方向に向けて搭載し、これを前記門型架台内を通過させて架設機より床版用プレキャストPC板架設位置側まで移動させ、然る後、床版用プレキャストPC板を旋回台付台車の旋回台上のみに支持させ、該旋回台により床版用プレキャストPC板を橋軸方向に交差する所望の角度まで旋回させ、然る後前記架設機の門型架台を移動させて床版用プレキャストPC板上にまで前記吊り装置を移動させ、該吊り装置によって床版用プレキャストPC板を吊り上げ、該床版用プレキャストPC板が所望の架設位置上に至るまで門型架台を移動させ、該架設位置にて床版用プレキャストPC板を吊り降ろす床版用プレキャストPC板架設方法。   Using the precast PC plate erection device for floor slabs according to claim 1, the precast PC plate for floor slabs is mounted on the floor cast precast PC plate conveyance carriage composed of the three carts in the direction of the bridge axis. Then, this is passed through the portal frame and moved from the erection machine to the floor precast PC plate erection position side, after which the floor precast PC plate is supported only on the swivel of the carriage with swivel And turn the precast PC plate for floor slabs to a desired angle intersecting the bridge axis direction by the swivel, and then move the portal frame of the erection machine to the precast PC plate for floor slabs The suspension device is moved, the floor cast precast PC plate is lifted by the suspension device, the gate-type frame is moved until the floor cast precast PC plate reaches a desired installation position, and the floor plate is used at the installation position. Precast P Precast PC plate construction method for the deck down hanging plate. 床版用プレキャストPC板の上面又は下面に該床版用プレキャストPC板の自重によ発生する断面力に対抗する仮補強鋼材を添わせて固定した状態で、前記床版用プレキャストPC板搬送台車への搭載から架設までの工程を行なう請求項2に記載の床版用プレキャストPC板架設方法。While fixed Sowase a temporary steel reinforced material against cross force generation caused by the own weight of the floor plate for precast PC board to the upper surface or lower surface of the floor plate precast PC board, precast PC board carrying the slab The precast PC board erection method for floor slabs according to claim 2, wherein the steps from mounting on a carriage to erection are performed.
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