JP2003003424A - Overhanging execution method for pc box-girder bridge - Google Patents

Overhanging execution method for pc box-girder bridge

Info

Publication number
JP2003003424A
JP2003003424A JP2001190019A JP2001190019A JP2003003424A JP 2003003424 A JP2003003424 A JP 2003003424A JP 2001190019 A JP2001190019 A JP 2001190019A JP 2001190019 A JP2001190019 A JP 2001190019A JP 2003003424 A JP2003003424 A JP 2003003424A
Authority
JP
Japan
Prior art keywords
block
concrete
slab
constructed
floor slab
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.)
Granted
Application number
JP2001190019A
Other languages
Japanese (ja)
Other versions
JP3830362B2 (en
Inventor
Masaru Tada
多田勝
Hideto Morita
森田秀人
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taisei Corp
Original Assignee
Taisei Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Taisei Corp filed Critical Taisei Corp
Priority to JP2001190019A priority Critical patent/JP3830362B2/en
Publication of JP2003003424A publication Critical patent/JP2003003424A/en
Application granted granted Critical
Publication of JP3830362B2 publication Critical patent/JP3830362B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Bridges Or Land Bridges (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an overhanging execution method for a PC box-girder bridge, by which a waiting time is reduced and the term of works can be shortened. SOLUTION: A movable type service car 7 is moved forward by one block, the corrugated steel-plate web 5 of a front block 2a is executed, and the lower floor slab 3 of the front block is executed while the upper floor slab 4 and cross beam 6 of a rear block 2b are executed. Concrete is placed on the lower floor slab of the front block while concrete is placed to the upper floor slab and cross beam of the rear block. The processes are repeated successively, and the two blocks 2a and 2b are executed simultaneously. It is also considered that the cross beam is executed at the same time as the lower floor slab and the corrugated steel-plate web in the front block.

Description

【発明の詳細な説明】 【0001】 【発明の属する技術分野】本発明は、移動式作業車を用
いて1ブロックごと桁を張り出して構築する形式の、特
に波形鋼板ウェブPC箱桁橋の張出施工方法に関するも
のである。 【0002】 【従来の技術】PC箱桁橋の張出施工はカンチレバー式
架設工法とも呼ばれ、支保工を用いず橋体を橋軸方向に
数メートルのブロックに分割し、橋脚に近い部分から移
動式作業車などの架設機械を用いて桁を両側に張り出し
て架設していくものである。PC箱桁橋の張出施工は、
架設地点の地形などに左右されず、工事規模に対し架設
装置などが比較的小規模で、安全且つ経済的な工法であ
るためよく使用されている。従来、1ブロックごと桁を
張り出して構築する波形鋼板ウェブPC箱桁橋の張出施
工は、図3に示すように移動式作業車aを用いて1ブロ
ックごとに波形鋼板ウェブb、横桁、下床版c及び上床
版dを構築していた。この移動式作業車aは、フレー
ム、作業台などで構成し、桁上面に敷設したレール上を
前進移動して1ブロックごとにコンクリートを打設する
もので、波形鋼板ウェブb・下床版cを施工してから横
桁・上床版dの順に施工を進める。即ち、一つのブロッ
クeに対応するように移動式作業車aを前進して据え付
けし、このブロックeに波形鋼板ウェブbを設置し、さ
らに下床版cの型枠を構築する(図3(a))。次に、
このブロックeの上床版d及び横桁の型枠を構築する
(図3(b))。次いでこのブロックeの下床版cの型
枠、上床版d及び横桁の型枠に順次コンクリートを打設
する(図3(c))。なお、横桁は波形鋼板または平鋼
板の場合もある。再び移動式作業車aを前進して据え付
けし、同様の手順を繰り返しながら1ブロックごとに波
形鋼板ウェブb、下床版c及び上床版dを張り出して橋
を構築する。 【0003】 【発明が解決しようとする課題】しかしながら、前記し
た従来のPC箱桁橋の張出施工方法にあっては、次のよ
うな問題点がある。 <イ>1サイクル内で1ブロックずつの施工方法であ
り、1ブロックごとに下床版cのコンクリートを養生し
てから横桁のコンクリートを打設し、さらに横桁のコン
クリートを養生してから上床版dのコンクリートを打設
するため、各作業ごとの待ち時間が多く、工期が長くな
る。また、1回のコンクリート打設で下床版、横桁、上
床版の全ての打設を行う場合には、特に横桁、上床版の
型枠支保工の構造が複雑となり、組立て、解体の手間が
大きくなる。 <ロ>下床版cの型枠構築作業が完全に終了しないうち
に、上床版dの作業を開始すると上下作業となり、危険
である。 【0004】 【本発明の目的】本発明は上記したような従来の問題点
に鑑みて考えられたもので、待ち時間を少なくして効率
化し、工期の短縮を可能にしたPC箱桁橋の張出施工方
法を提供することを目的とする。また本発明は、安全に
作業を行うことのできるようにしたPC箱桁橋の張出施
工方法を提供することを目的とする。本発明は、上記目
的のうち少なくとも一つを達成するようにしたものであ
る。 【0005】 【課題を解決するための手段】上記のような目的を達成
するために、本発明のPC箱桁橋の張出施工方法は、移
動式作業車を用いて1ブロックごと桁を張り出して構築
するPC箱桁橋の張出施工方法において、前記移動式作
業車を前方ブロックへ移動し、前記前方ブロックの波形
鋼板ウェブの設置及び下床版の型枠の構築を行うと同時
に後方ブロックの上床版の型枠を構築し、前記前方ブロ
ックの下床版型枠にコンクリートを打設するとともに後
方ブロックの上床版型枠にコンクリートを打設し、二つ
のブロックを同時に施工することを特徴とするものであ
る。また、本発明は、波形鋼板ウェブの場合だけでな
く、コンクリートウェブの場合にも適用できる方法であ
る。 【0006】 【本発明の実施の形態】以下図面を参照しながら、本発
明に係る実施の形態について説明する。 【0007】<イ>PC箱桁橋 PC箱桁橋1は、橋桁を橋軸方向に数メートルのブロッ
ク2に分割し、このブロック2を橋脚に近い部分から移
動式作業車7を用いて両側に張り出して架設するもので
ある。一つのブロック2は、下床版3と上床版4及びこ
れらを結ぶ波形鋼板ウェブ5、横桁6などからなる。な
お、ウェブはコンクリートウェブの場合もある。また横
桁6はコンクリートの場合、波形鋼板や平鋼板の場合が
ある。図1は、移動式作業車7でPC箱桁橋1を施工す
る状態を示す説明図で、前方ブロック2aの下床版3の
型枠にコンクリートを打設し、後方ブロック2bの上床
版4の型枠にコンクリートを打設した状態を示す。本発
明では、前方ブロック2aと後方ブロック2bの二つの
ブロックを同時に施工するものである。 【0008】<ロ>移動式作業車 移動式作業車7は、PC箱桁橋1を跨ぐように両側に配
置した支持体71と、この支持体71に下支えで連結し
たトラス構造の作業台72とからなる。支持体71の上
部にローラ73を組み込み、このローラ73がPC箱桁
橋1上部に敷設したレール78上を転がって、移動式作
業車7全体が前進移動する。前進移動は、後方ローラ7
7をPC箱桁橋1(下床版3)下面に当接してこれを反
力として、公知のジャッキなどを伸長することによって
行うことができる。前進移動後、その位置で昇降ジャッ
キ74により作業台72のジャッキアップを行い、移動
式作業車7を固定する。作業台72の前部に型枠受け7
5を調整ジャッキ76で調整可能に載置しており、この
型枠受け75によって下床版3の型枠などを構築する。
さらに、この移動式作業車7を用いてコンクリートを打
設した後、プレストレスを与えて、順次移動式作業車7
を前方へ移動してPC箱桁橋1を張り出して架設してい
く。なお、実施例の移動式作業車7は、下支え式のもの
を示しているが、図3に示す形式の移動式作業車を用い
てもよい。 【0009】次に、図2を参照してPC箱桁橋の張出施
工方法について説明する。 【0010】<イ>移動式作業車の前進(図2(a)) ジャッキなどを伸長することによって、移動式作業車7
を1ブロック分だけ前進移動する。なお、前進移動する
前の移動式作業車7は、第N番目ブロック(前方ブロッ
ク2a)と、この一つ手前の第N−1番目ブロック(後
方ブロック2b)とを同時に施工することができる位置
にあり、この状態で、第N番目ブロックの下床版3と第
N−1番目ブロックの上床版4にコンクリートを同時に
打設しておく。移動式作業車7が1ブロック分だけ前進
移動することによって、PC箱桁橋1の下側に配置され
ている作業台72も1ブロック分だけ前進移動し、作業
台72上において一つ先の第N+1番目ブロック(新た
な前方ブロック2a)を施工できる状態となる。 【0011】<ロ>波形鋼板ウェブの設置(図2
(b)) 作業台72上で、第N+1番目ブロックに波形鋼板ウェ
ブ5を設置する。波形鋼板ウェブ5は、下床版3と上床
版4をつなぐためのもので、強度の高い波形鋼板を用い
る。コンクリートウェブの場合には、鉄筋組立と型枠組
立の工程となり、この場合は、下床版3の型枠、鉄筋組
立を先に行う。 【0012】<ハ>下床版型枠と上床版型枠の構築(図
2(b)) 作業台72の型枠受け75の上に下床版3の型枠を構築
する。構築された下床版3の型枠は、前記の第N+1番
目ブロックに設置した波形鋼板ウェブ5の下方に設置さ
れる。なお、下床版3の型枠を構築してから、前記<ロ
>の波形鋼板ウェブ5を設置してもよい。コンクリート
ウェブの場合は、この手順となる。作業台72は第N番
目ブロック(新たな後方ブロック2b)を施工できる位
置でもあるので、第N番目ブロックの上床版4の型枠を
構築する。なお、第N番目ブロックに横桁6(コンクリ
ートの場合、波形鋼板または平鋼板の場合)を構築する
ように設計している場合は、上床版4の型枠に先立って
横桁6の型枠を構築するか、あるいは横桁6の鋼板を組
み立てる。横桁6を構築するように設計している場合
は、上床版4の支保工を軽減できる利点がある。 【0013】<ニ>コンクリートの打設(図2(c)) 前記<ハ>で構築した第N+1番目ブロックの下床版3
の型枠にコンクリートを打設し、同時に第N番目ブロッ
クの上床版4の型枠にコンクリートを打設する。なお、
第N番目ブロックにコンクリート横桁6を構築するよう
に設計している場合は、前記<ハ>で述べたごとく横桁
6の型枠を構築しているので、横桁6のコンクリートを
上床版4のコンクリートと同時に打設する。これによっ
て、第N+1番目ブロックの下床版3にコンクリートを
打設するとともに第N番目ブロックの上床版4及び横桁
6にコンクリートを打設することになる。即ち、二つの
ブロック(前方ブロック2a、後方ブロック2b)に同
時にコンクリートを打設する。なお、横桁6は、前方ブ
ロック2aにおいて下床版3及び波形鋼板ウェブ5と同
時に施工する方法も考えられる。 【0014】<ホ>再び移動式作業車を前進(図2
(c)) 第N番目ブロックの上床版4のコンクリートの養生を終
え、PC鋼材の緊張が終了したら、上床版4の上にレー
ル78を敷設して、移動式作業車7の移動準備を整え
る。再び移動式作業車7を1ブロック分だけ前進移動
し、図2(a)の状態に至る。移動式作業車7を固定し
た後、作業台72では前記した型枠の構築、さらにコン
クリートの打設作業が行われる。これを順次繰り返すこ
とによって、二つのブロック(前方ブロック2a、後方
ブロック2b)を同時に施工することができる。 【0015】本発明では、1サイクル内で1ブロックず
つ施工していく従来の張出施工と比較して、1サイクル
内で二つのブロック2a、2bを同時に施工しているの
で、工期を3割から4割程度短縮することができる。 【0016】 【本発明の効果】本発明のPC箱桁橋の張出施工方法
は、以上説明したようになるから次のような効果を得る
ことができる。 <イ>前方ブロックの下床版を施工すると同時に後方ブ
ロックの上床版を施工し、また前方ブロックの下床版に
コンクリートを打設するとともに後方ブロックの上床版
にコンクリートを打設して、二つのブロックを同時に施
工するようにしたので、待ち時間を少なくし、工期の短
縮を可能にすることができる。 <ロ>後方ブロックと前方ブロックの二つのブロックを
同時に施工する際に、前方ブロックでは下床版を施工
し、後方ブロックでは上床版を施工するようにしている
ので、危険な上下作業とならず、安全に作業を行うこと
ができる。 <ハ>2ブロック分の全てを同時に施工するものでない
ため、移動式作業車に作用する力が軽減され、移動式作
業車の鋼材重量を軽減することができるなどの合理化が
可能となる。
Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of extending a girder one block at a time by using a movable work vehicle, and in particular, to a method of stretching a girder bridge of a corrugated steel web PC box girder. It relates to the construction method. 2. Description of the Related Art Overhanging a PC box girder bridge is also called a cantilever type erection method, in which a bridge body is divided into blocks of several meters in the bridge axis direction without using a support, and a portion near a pier is used. The girder is constructed by projecting the girder on both sides using a construction machine such as a mobile work vehicle. Overhang construction of PC box girder bridge
Irrespective of the topography of the erection point, the erection equipment and the like are relatively small in relation to the construction scale, and are often used because they are safe and economical. Conventionally, overhanging of a box girder bridge using a corrugated steel sheet web constructed by extending a girder per block is performed using a movable work vehicle a as shown in FIG. The lower slab c and the upper slab d were constructed. This movable work vehicle a is composed of a frame, a work table, etc., and moves forward on rails laid on the upper surface of the girder to cast concrete in blocks, and a corrugated steel sheet web b and a lower floor slab c And then proceed with the construction in the order of the horizontal girder and the upper floor slab d. That is, the movable work vehicle a is moved forward and installed so as to correspond to one block e, the corrugated steel sheet web b is installed in this block e, and the formwork of the lower floor slab c is constructed (FIG. 3 ( a)). next,
The formwork of the upper floor slab d and the horizontal girder of the block e is constructed (FIG. 3B). Next, concrete is poured into the formwork of the lower slab c, the upper slab d, and the horizontal girder of the block e (FIG. 3 (c)). The cross beam may be a corrugated steel plate or a flat steel plate. The movable work vehicle a is again moved forward and installed, and the corrugated steel sheet web b, the lower floor slab c and the upper floor slab d are extended for each block while repeating the same procedure to construct a bridge. [0003] However, the above-mentioned conventional method of overhanging a PC box girder bridge has the following problems. <B> This is a construction method of one block at a time in one cycle. After curing the concrete of the lower floor slab c for each block, the concrete of the horizontal girder is poured, and then the concrete of the horizontal girder is cured. Since the concrete of the upper floor slab d is cast, the waiting time for each operation is long, and the construction period is long. In addition, when all the lower deck, horizontal girder, and upper deck are cast in one concrete casting, the structure of the form support of the horizontal girder and upper deck is particularly complicated, and assembling and dismantling are required. The trouble is increased. <B> If the work of the upper slab d is started before the work of constructing the form of the lower slab c is completely completed, the work becomes up and down, which is dangerous. SUMMARY OF THE INVENTION The present invention has been conceived in view of the above-mentioned conventional problems, and has been developed in consideration of the above-mentioned problems. It is intended to provide an overhang construction method. Another object of the present invention is to provide a method of overhanging a PC box girder bridge that enables safe operation. The present invention achieves at least one of the above objects. [0005] In order to achieve the above object, a method for overhanging a PC box girder bridge according to the present invention is to extend a girder block by block using a movable work vehicle. In the method of overhanging a PC box girder bridge, the movable work vehicle is moved to a front block, and a corrugated steel sheet web of the front block is installed and a formwork of a lower floor slab is simultaneously constructed. Constructing the upper deck slab form, placing concrete in the lower deck slab of the front block and placing concrete in the upper deck slab of the rear block, and simultaneously constructing the two blocks. It is assumed that. The present invention is a method applicable not only to a corrugated steel sheet web but also to a concrete web. Embodiments of the present invention will be described below with reference to the drawings. <A> PC Box Girder Bridge PC box girder bridge 1 divides a bridge girder into blocks 2 each having a length of several meters in the bridge axis direction. And overhang it. One block 2 includes a lower slab 3 and an upper slab 4, a corrugated steel sheet web 5 connecting them, a cross beam 6, and the like. The web may be a concrete web. The cross beam 6 may be made of concrete, corrugated steel plate or flat steel plate. FIG. 1 is an explanatory view showing a state in which a PC box girder bridge 1 is constructed by a mobile work vehicle 7, in which concrete is poured into a formwork of a lower deck 3 of a front block 2a and an upper deck 4 of a rear block 2b. Shows a state in which concrete is cast on the formwork of No. 1. In the present invention, two blocks, a front block 2a and a rear block 2b, are constructed simultaneously. <B> Mobile Work Vehicle The mobile work vehicle 7 has a support 71 disposed on both sides of the PC box girder bridge 1 and a work table 72 having a truss structure connected to the support 71 by a lower support. Consists of A roller 73 is mounted on the upper part of the support 71, and the roller 73 rolls on a rail 78 laid on the upper part of the PC box girder bridge 1, so that the entire movable work vehicle 7 moves forward. The forward movement is performed by the rear roller 7
7 can be performed by abutting the lower surface of the PC box girder bridge 1 (lower slab 3) and using this as a reaction force to extend a known jack or the like. After the forward movement, the work table 72 is jacked up by the lifting jack 74 at that position, and the movable work vehicle 7 is fixed. Form support 7 on front of worktable 72
5 is mounted so as to be adjustable by an adjustment jack 76, and the formwork of the lower slab 3 is constructed by the formwork 75.
Further, after concrete is poured by using the movable work vehicle 7, a prestress is given to the concrete to sequentially move the movable work vehicle 7.
Is moved forward, and the PC box girder bridge 1 is extended and erected. Although the movable work vehicle 7 of the embodiment is of a support type, a mobile work vehicle of the type shown in FIG. 3 may be used. Next, a method of overhanging a PC box girder bridge will be described with reference to FIG. <A> Advance of the mobile work vehicle (FIG. 2A) The mobile work vehicle 7 is extended by extending a jack or the like.
Is moved forward by one block. In addition, the mobile work vehicle 7 before the forward movement is capable of simultaneously constructing the N-th block (front block 2a) and the N-1st block (rear block 2b) immediately before the N-th block. In this state, concrete is simultaneously poured into the lower slab 3 of the N-th block and the upper slab 4 of the (N-1) -th block. When the movable work vehicle 7 moves forward by one block, the work table 72 disposed below the PC box girder bridge 1 also moves forward by one block, and the work table 72 is moved forward by one block on the work table 72. It becomes possible to construct the (N + 1) -th block (new front block 2a). <B> Installation of corrugated steel sheet web (FIG. 2)
(B)) On the worktable 72, the corrugated steel sheet web 5 is installed in the (N + 1) th block. The corrugated steel sheet web 5 is for connecting the lower floor slab 3 and the upper floor slab 4, and uses a corrugated steel sheet having high strength. In the case of a concrete web, the process of assembling a reinforcing bar and a formwork is performed. In this case, the assembling of the formwork and the reinforcing bar of the lower floor slab 3 is performed first. <C> Construction of lower deck slab formwork and upper deck slab formwork (FIG. 2 (b)) A formwork of lower deck slab 3 is constructed on formwork receiver 75 of work table 72. The formwork of the constructed lower slab 3 is installed below the corrugated steel sheet web 5 installed in the (N + 1) th block. The corrugated steel sheet web 5 of <b> may be installed after the formwork of the lower slab 3 is constructed. This is the case for concrete webs. Since the work table 72 is also a position where the Nth block (new rear block 2b) can be constructed, the formwork of the upper floor slab 4 of the Nth block is constructed. In the case where the cross beam 6 (in the case of concrete, corrugated steel plate or flat steel plate) is designed to be constructed in the Nth block, the formwork of the cross beam 6 is formed prior to the formwork of the upper deck 4. Or assemble the steel plate of the cross beam 6. When the cross beam 6 is designed to be constructed, there is an advantage that the support work of the upper floor slab 4 can be reduced. <D> Casting concrete (FIG. 2 (c)) Lower deck 3 of the (N + 1) th block constructed in <c> above
Concrete is poured into the formwork of the upper floor slab 4 of the N-th block at the same time. In addition,
In the case where the concrete cross beam 6 is designed to be constructed in the N-th block, since the formwork of the cross beam 6 is constructed as described in <C> above, the concrete of the cross beam 6 is placed on the upper floor slab. Pour simultaneously with the concrete of 4. Thereby, concrete is cast on the lower slab 3 of the (N + 1) th block and concrete is cast on the upper slab 4 and the cross beam 6 of the Nth block. That is, concrete is simultaneously poured into two blocks (the front block 2a and the rear block 2b). In addition, a method is also conceivable in which the cross beam 6 is constructed simultaneously with the lower slab 3 and the corrugated steel web 5 in the front block 2a. <E> Moving the mobile work vehicle forward again (FIG. 2)
(C)) When the curing of the concrete of the upper floor slab 4 of the N-th block is completed and the tension of the PC steel material ends, the rail 78 is laid on the upper floor slab 4 to prepare for the movement of the movable work vehicle 7. . The movable work vehicle 7 is moved forward by one block again to reach the state shown in FIG. After the movable work vehicle 7 is fixed, the work table 72 is used to construct the above-described formwork and to perform concrete casting. By repeating this sequentially, two blocks (the front block 2a and the rear block 2b) can be simultaneously constructed. In the present invention, two blocks 2a and 2b are simultaneously constructed in one cycle as compared with the conventional overhang construction in which one block is constructed in one cycle. Can be reduced by about 40%. The method for overhanging a PC box girder bridge according to the present invention is as described above, and the following effects can be obtained. <a> At the same time as the lower slab of the front block, the upper slab of the rear block is constructed. At the same time, concrete is cast on the lower slab of the front block and concrete is cast on the upper slab of the rear block. Since two blocks are constructed at the same time, the waiting time can be reduced and the construction period can be shortened. <B> When two blocks, a rear block and a front block, are constructed at the same time, a lower slab is constructed for the front block and an upper slab is constructed for the rear block. Work safely. <C> Since all of the two blocks are not constructed at the same time, the force acting on the mobile work vehicle is reduced, and the weight of the steel material of the mobile work vehicle can be reduced.

【図面の簡単な説明】 【図1】移動式作業車でPC箱桁橋を施工する状態を示
す説明図。 【図2】PC箱桁橋の施工手順を示す説明図。 【図3】従来のPC箱桁橋の施工手順を示す説明図。 【符号の説明】 1・・・PC箱桁橋 2・・・ブロック 2a・・前方ブロック 2b・・後方ブロック 3・・・下床版 4・・・上床版 5・・・波形鋼板ウェブ 6・・・横桁 7・・・移動式作業車 72・・作業台
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram showing a state where a PC box girder bridge is constructed by a mobile work vehicle. FIG. 2 is an explanatory view showing a construction procedure of a PC box girder bridge. FIG. 3 is an explanatory view showing a construction procedure of a conventional PC box girder bridge. [Description of Signs] 1 ... PC Box Girder Bridge 2 ... Block 2a ... Front Block 2b ... Back Block 3 ... Lower Floor Plate 4 ... Upper Floor Plate 5 ... Corrugated Steel Sheet Web 6 ... ..Horizontal girder 7 Mobile work vehicle 72 Work table

Claims (1)

【特許請求の範囲】 【請求項1】移動式作業車を用いて1ブロックごと桁を
張り出して構築するPC箱桁橋の張出施工方法におい
て、 前記移動式作業車を前方ブロックへ移動し、 前記前方ブロックの波形鋼板ウェブの設置及び下床版の
型枠の構築を行うと同時に後方ブロックの上床版の型枠
を構築し、 前記前方ブロックの下床版型枠にコンクリートを打設す
るとともに後方ブロックの上床版型枠にコンクリートを
打設し、 二つのブロックを同時に施工することを特徴とする、P
C箱桁橋の張出施工方法。
Claims: 1. A method for overhanging a PC box girder bridge constructed by extending a girder block by block using a mobile work vehicle, comprising: moving the mobile work vehicle to a front block; At the same time as installing the corrugated steel web of the front block and constructing the formwork of the lower slab, constructing the formwork of the upper slab of the rear block, and placing concrete in the form of the lower slab of the front block. Concrete is poured into the upper deck slab form of the rear block, and two blocks are constructed at the same time.
Overhang construction method of C box girder bridge.
JP2001190019A 2001-06-22 2001-06-22 Overhang construction method of PC box girder bridge Expired - Fee Related JP3830362B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001190019A JP3830362B2 (en) 2001-06-22 2001-06-22 Overhang construction method of PC box girder bridge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001190019A JP3830362B2 (en) 2001-06-22 2001-06-22 Overhang construction method of PC box girder bridge

Publications (2)

Publication Number Publication Date
JP2003003424A true JP2003003424A (en) 2003-01-08
JP3830362B2 JP3830362B2 (en) 2006-10-04

Family

ID=19028848

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001190019A Expired - Fee Related JP3830362B2 (en) 2001-06-22 2001-06-22 Overhang construction method of PC box girder bridge

Country Status (1)

Country Link
JP (1) JP3830362B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008274638A (en) * 2007-04-27 2008-11-13 Ps Mitsubishi Construction Co Ltd Corrugated steel plate web bridge erection device and corrugated steel plate web bridge erection method
JP2009235835A (en) * 2008-03-28 2009-10-15 Sumitomo Mitsui Construction Co Ltd Bridge construction method
CN102747681A (en) * 2012-06-28 2012-10-24 贵州桥梁建设集团有限责任公司 Movable protection platform for constructing bridge
CN103103929A (en) * 2013-02-17 2013-05-15 中铁大桥局集团第八工程有限公司 Multifunctional movable protective underframe for steel beam cantilever erection
CN109702366A (en) * 2018-09-28 2019-05-03 江苏中铁山桥重工有限公司 A kind of big sweep rigid torsion opening trough_like girder steel construction method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008274638A (en) * 2007-04-27 2008-11-13 Ps Mitsubishi Construction Co Ltd Corrugated steel plate web bridge erection device and corrugated steel plate web bridge erection method
JP2009235835A (en) * 2008-03-28 2009-10-15 Sumitomo Mitsui Construction Co Ltd Bridge construction method
CN102747681A (en) * 2012-06-28 2012-10-24 贵州桥梁建设集团有限责任公司 Movable protection platform for constructing bridge
CN103103929A (en) * 2013-02-17 2013-05-15 中铁大桥局集团第八工程有限公司 Multifunctional movable protective underframe for steel beam cantilever erection
CN103103929B (en) * 2013-02-17 2015-08-12 中铁大桥局集团第八工程有限公司 Multifunctional movable protective underframe for steel beam cantilever erection
CN109702366A (en) * 2018-09-28 2019-05-03 江苏中铁山桥重工有限公司 A kind of big sweep rigid torsion opening trough_like girder steel construction method
CN109702366B (en) * 2018-09-28 2021-01-01 江苏中铁山桥重工有限公司 Manufacturing method of large-curve-radius rigid torsional open-slot steel beam

Also Published As

Publication number Publication date
JP3830362B2 (en) 2006-10-04

Similar Documents

Publication Publication Date Title
JP5179804B2 (en) Mobile suspension support
JP4748420B2 (en) Construction method of corrugated steel web bridge using girder for erection work
JP5053589B2 (en) How to build a bridge girder
JP2008088782A (en) Cantilever overhang erection method of corrugated steel plate web bridge
JP4403051B2 (en) Corrugated steel web bridge construction method
JP2006077521A (en) Bridge constructing apparatus
JP2007092313A (en) Construction method for precast concrete corrugated steel plate web box girder
JP5106989B2 (en) Corrugated steel web bridge erection device and corrugated steel web bridge erection method
JPH0841826A (en) Erection method of bridge and equipment thereof and main girder unit
JP4928342B2 (en) Corrugated steel web bridge erection device and corrugated steel web bridge erection method
JP5221474B2 (en) Extruder beam rear support device and extrusion installation method
JP2003003424A (en) Overhanging execution method for pc box-girder bridge
JP4033871B2 (en) How to build a bridge girder
JP6509096B2 (en) Extension method
JP2005188203A (en) Moving work vehicle for overhang floor slab
JP2005240353A (en) Erection method of bridge
JP4351523B2 (en) Column head construction method
JP3536269B2 (en) Construction method of concrete bridge and feed girder used for the construction method
JP2000104221A (en) Combined truss bridge and erection method of the same
JP2004068286A (en) Laying method for steel pc composite bridge
CN214362897U (en) Reusable girder lattice system bridge girder installation and adjustment platform structure
CN110847039B (en) Full cantilever installation method of segmental precast concrete box girder
JP7012486B2 (en) Bridge construction method
JP2000104220A (en) Erection of combined truss bridge
KR100469638B1 (en) Support construction for slab of prestressed concrete beam of bridge

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20040720

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20060612

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20060704

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20060711

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100721

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110721

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110721

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120721

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130721

Year of fee payment: 7

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130721

Year of fee payment: 7

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140721

Year of fee payment: 8

LAPS Cancellation because of no payment of annual fees