JP3110985B2 - Construction method of column capital of overhang girder bridge - Google Patents

Construction method of column capital of overhang girder bridge

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Publication number
JP3110985B2
JP3110985B2 JP07213275A JP21327595A JP3110985B2 JP 3110985 B2 JP3110985 B2 JP 3110985B2 JP 07213275 A JP07213275 A JP 07213275A JP 21327595 A JP21327595 A JP 21327595A JP 3110985 B2 JP3110985 B2 JP 3110985B2
Authority
JP
Japan
Prior art keywords
column
capital
bridge
work
pier
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
Application number
JP07213275A
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Japanese (ja)
Other versions
JPH0959932A (en
Inventor
孝夫 川島
Original Assignee
株式会社ピー・エス
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Filing date
Publication date
Application filed by 株式会社ピー・エス filed Critical 株式会社ピー・エス
Priority to JP07213275A priority Critical patent/JP3110985B2/en
Publication of JPH0959932A publication Critical patent/JPH0959932A/en
Application granted granted Critical
Publication of JP3110985B2 publication Critical patent/JP3110985B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明はプレストレストコン
クリート(PC)橋を張出架設する場合の基点となる張
出架設桁橋の柱頭部の施工方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a column head of an overhanging girder bridge, which is a base point for overhanging a prestressed concrete (PC) bridge.

【0002】[0002]

【従来の技術】架設作業車を使用して、橋脚上から橋体
を橋軸方向に3〜5mごとに分割して左右に交互に張出
して構築する橋梁の張出架設方法は、長大スパンの橋梁
の架設に適し、桁下空間条件に規制されないなどの特徴
があり、広範に採用されている。この張出架設方法は、
橋脚の頭部に基点(張出開始点)となる柱頭部を最初に
構築し、その後この柱頭部の上に移動用レールを介して
2台の架設作業車を前後進可能に組立載置し、この架設
作業車から型枠や足場を吊下支持し、型枠内に鉄筋など
を組立て、コンクリートを打設し、橋体ブロックを基点
から左右にバランスを取りながらやじろ兵衛式に橋体を
片持ち張出構築する。
2. Description of the Related Art An overhanging construction method of a bridge, which is constructed by using an installation work vehicle and dividing the bridge body from the top of a pier at intervals of 3 to 5 m in the bridge axis direction and alternately extending the bridge body from side to side, is known. It is suitable for erection of bridges and is not restricted by under-girder space conditions. This overhang construction method,
First, a column capital that serves as a base point (overhang start point) is constructed at the head of the pier, and then two erection work vehicles are assembled and mounted on the column capital via a moving rail so as to be able to move forward and backward. From this construction work vehicle, formwork and scaffolds are suspended and supported, steel bars are assembled in the formwork, concrete is cast, and the bridge body is laid in a yajirobei style while balancing the bridge body block from left to right from the base point. Build a cantilever overhang.

【0003】図8は張出架設方法の一例を示すもので橋
脚3の上端に橋脚頭部1及び柱頭部2を構築し、この柱
頭部2からブロック60を順次左右に張出構築する。架
設作業車50は、順次張出施工した橋体の上を前進し、
次のブロックの足場や型枠を先方に張出して保持し、コ
ンクリートを打設する。そして、各橋脚3、3、・・・
を基点として張出施工し、橋脚3、3の中間で橋体を連
結して橋体架設を完了する。
FIG. 8 shows an example of a method of erection and erection, in which a pier head 1 and a column capital 2 are constructed at the upper end of a pier 3, and blocks 60 are sequentially constructed from the column capital 2 to the left and right. The erection work vehicle 50 moves forward on the bridge body that has been sequentially erected,
Overhang and hold the scaffolding and formwork of the next block and pour concrete. And each pier 3, 3, ...
And the bridge body is connected in the middle of the piers 3, 3 to complete the bridge body erection.

【0004】上記張出架設方法の場合、柱頭部2の構築
は、通常地盤から橋脚に沿って足場を組み上げ、柱頭部
施工用足場を設けると共に、柱頭部構築用支保工ブラケ
ットを橋脚に取付けて行われていた。橋脚は時には地上
高50m以上にもおよぶ場合があり、高所位置での橋脚
頭部1の打増し、柱頭部2の支保工ブラケットの取付、
作業足場の設置、柱頭部2の型枠の組み立て、柱頭部コ
ンクリートの打設などの作業を必要とし、安全性の点か
らも周到な作業を必要とするものである。
In the case of the above-mentioned overhanging method, the capital 2 is usually constructed by assembling a scaffold from the ground along the pier, providing a scaffold for the construction of the capital, and attaching a support bracket for the construction of the capital to the pier. It was done. Sometimes the pier can reach more than 50m above ground level, so the pier head 1 can be overstretched at high elevations,
Work such as installation of a work scaffold, assembling the formwork of the column capital 2 and placing concrete of the capital of the capital is required, and also requires careful work from the viewpoint of safety.

【0005】従来、張出架設桁橋の建設に当って、橋体
(上部工)と橋脚(下部工)の施工をそれぞれ別の技術
担当者群が担当することが一般的で、橋脚の最上部の一
部(橋脚頭部)2〜3mを上部工担当技術陣の分担とす
ることが行われている。これは、この橋脚頭部の部分に
橋体を支持するための支承アンカーボルトや、張出架設
時のアンバランスモーメントに対応するためのアンカー
バー、テンポラリ鋼棒などの仮設材料を埋設する必要が
あるためで、上部工の柱頭部の構築に先立ち、下部工施
工時に使用した足場や支保工が撤去された橋脚に改めて
足場を掛け、橋脚頭部及び柱頭部の構築のための支保工
(ブラケット)を高所作業で取付け、型枠の組み立てな
どの作業を必要とした。更に、柱頭部完成後に張出架設
のための架設作業車の組み立て、張出架設足場の吊設、
型枠の組み立てなども狭隘な柱頭部で行う必要があり作
業能率や安全性の観点からも、なお、改善の余地があっ
た。
Conventionally, when constructing an overhanging girder bridge, the construction of the bridge body (superstructure) and the pier (substructure) are generally performed by different technical staffs. A part of the upper part (bridge pier) 2 to 3 m is assigned to the supervising engineer. This means that it is necessary to embed temporary materials such as anchor bolts for supporting the bridge body, anchor bars to cope with unbalanced moments during overhanging, temporary steel rods, etc. Because of this, prior to the construction of the capital of the superstructure, the scaffolds used during the substructure construction and the pier from which the support was removed were re-hung, and the support (bracket) for the construction of the pier head and the capital was constructed. ) Was installed at a high place and required work such as assembling the formwork. Furthermore, after the completion of the capital, assembling the erection work vehicle for the overhanging erection, suspending the overhanging scaffolding,
It is necessary to assemble the formwork with a narrow capital, and there is still room for improvement from the viewpoint of work efficiency and safety.

【0006】[0006]

【発明が解決しようとする課題】本発明は、地上作業で
施工できるものを可能な限り地上において組み立て、高
所での作業を減らし、また、材料・部材の共用や転用を
図ることができるようにして、不必要な吊上げ、吊り下
ろしを省略できるようにした張出架設桁橋の柱頭部の施
工方法を提供することを目的とする。
SUMMARY OF THE INVENTION The object of the present invention is to assemble objects that can be constructed in ground work on the ground as much as possible, to reduce work in high places, and to share or divert materials and members. In addition, an object of the present invention is to provide a method of constructing a column head of an overhanging girder bridge in which unnecessary lifting and hanging down can be omitted.

【0007】[0007]

【課題を解決するための手段】本発明は、柱頭部のアン
カーバー鉄骨を兼ねた形鋼から成る形鋼ベント構を橋脚
頭部に据え付け、このベント構に橋軸に平行な縦梁及び
縦梁に直交する横梁を架設し、該横梁及び/又は該縦梁
から揚重機を吊設し、それぞれの梁から吊り材を吊下
し、地上で組み立てた支保工材、作業足場及び機材を揚
重機で吊上げ、吊り材に受け替え支持させ、その後、足
場上で支保工取付、型枠組立を行い、橋脚頭部及び柱頭
部のコンクリートを打設し、柱頭部構築後、前記横梁を
架設作業車の横梁に転用することを特徴とする張出架設
桁橋の柱頭部の施工方法である。
Means for Solving the Problems The present invention, Ann stigma portion
Bridge pier with a shaped steel vent structure made of shaped steel that also serves as a carver steel frame
Installed on the head, a vertical beam parallel to the bridge axis and a horizontal beam orthogonal to the vertical beam are erected on this vent structure, a lifting machine is suspended from the horizontal beam and / or the vertical beam, and a hanging material is suspended from each beam. Suspended suspension materials, work scaffolds and equipment assembled on the ground are lifted by a hoist, and transferred to and supported by the lifting materials. After that, the supports are attached and formwork is assembled on the scaffolds, and the pier head and capital After placing the concrete in the part and constructing the capital,
This is a method of constructing a column head of an overhanging girder bridge, which is diverted to a cross beam of an erection work vehicle .

【0008】記形鋼ベント構は、張出し架設時のアン
バランスモーメントに抵抗する柱頭部のアンカーバー鉄
骨を兼ねた形鋼とする。また、柱頭部構築後、前記ベン
ト構の横梁を、張出架設に使用する架設作業車の横梁に
転用することができる形鋼とすることによって必要最小
限の資機材の吊り上げでよいこととなる。
[0008] before Kikatachiko vent structure shall be the shape steel, which also serves as the anchor bar steel frame of the stigma part to resist the unbalanced moment at the time of the overhanging erection. In addition, after building the capital, by using the cross-section steel beam of the vent structure as a cross-section steel beam that can be diverted to the cross beam of the erection work vehicle used for the overhanging erection, it is possible to lift the minimum necessary equipment and materials. .

【0009】[0009]

【発明の実施の形態】図1〜図7を参照して、本発明の
実施の形態について説明する。図1は本発明の概念を示
す説明図であって、橋脚頭部1のコンクリート内に下端
が埋設されているベント構10を用いて、柱頭部2を施
工した状態を示している。図1の左半分は橋脚頭部1と
柱頭部2とを一体のラーメン構造とした場合を図示して
いる。この場合、後述のようにベント構10は橋脚頭部
1を柱頭部2とを結合する構造材として利用する。図1
の右半分は橋脚頭部1と柱頭部2とは分離した連続桁型
式の場合を示している。連続桁型式の場合には、柱頭部
2構築のときは橋脚頭部1と柱頭部2とは仮沓21を介
してテンポラリ鋼棒23で固定しておき、橋体全てが完
成した後は仮沓21を取外し本沓22と置き替える。こ
のとき、ベント構10も切断する。ベント構10に設け
た横梁12は足場や型枠吊下用の吊り材15等を吊下げ
ている。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an explanatory view showing the concept of the present invention, and shows a state in which a column cap 2 is constructed by using a vent structure 10 whose lower end is buried in concrete of a pier head 1. The left half of FIG. 1 illustrates a case where the bridge pier head 1 and the column head 2 have an integral rigid frame structure. In this case, as will be described later, the vent structure 10 uses the pier head 1 as a structural material for connecting the pier head 2 with the pier head 2. FIG.
The right half shows the case of a continuous girder type in which the pier head 1 and the column head 2 are separated. In the case of the continuous girder type, when constructing the column cap 2, the pier head 1 and the column cap 2 are fixed with temporary steel rods 23 through the temporary shoes 21, and after all the bridge bodies are completed, Remove the shoe 21 and replace it with the actual shoe 22. At this time, the vent structure 10 is also cut. The cross beam 12 provided in the vent structure 10 suspends a scaffold, a hanging material 15 for formwork suspension, and the like.

【0010】図2〜図6は本発明の施工工程を示してい
る。橋脚3の近傍の地上でH形鋼を使用したベント構1
0を組立て、クレーンで橋脚頂部に架設する。次に図2
に示すように、このベント構10に橋軸方向縦梁11、
横梁12を架設し、この縦梁11、横梁12に作業足場
や材料を吊上げるための揚重機17、足場や支保工を吊
下支持する吊り材15を取り付ける。
FIGS. 2 to 6 show the construction process of the present invention. Vent structure 1 using H-section steel on the ground near pier 3
Assemble No. 0 and install it on the pier top with a crane. Next, FIG.
As shown in FIG.
A cross beam 12 is erected, and a hoisting machine 17 for lifting work scaffolds and materials and a suspending member 15 for suspending and supporting the scaffolds and supports are attached to the vertical beams 11 and the cross beams 12.

【0011】次に、作業足場を兼ねる作業構台31を地
上で組立て、橋脚頭部構築位置まで揚重機17で揚重
し、吊り材15に固定する(図3)。次いでこの作業構
台31を用いて、橋脚頭部1の図示省略した型枠、鉄筋
を組み立て、コンクリートを打設して橋脚頭部1を構築
する。橋脚頭部1のコンクリートが硬化したら、足場位
置を揚重機17(チェンブロック)にて調整し、柱頭部
支保工35、型枠支持材32を調整して図示省略した型
枠、鉄筋、PC鋼材の配置をして柱頭部2のコンクリー
トを打設する(図4)。この時ベント構10のH形鋼の
一部はそれぞれ橋脚頭部1、柱頭部2のコンクリートに
一体的に埋設される。橋体の構造形式がラーメン構造の
時は、図1の向かって左半分に示すように、橋脚頭部1
と柱頭部2は一体構造となり、橋体の構造型式が連続桁
の場合は図1の向かって右半分に示すように柱頭部1の
底面型枠を施し、橋脚上面に本沓22及び仮沓21を据
え付けて橋脚頭部1と柱頭部2を縁切りして構築する。
Next, the work gantry 31, which also serves as a work scaffold, is assembled on the ground, lifted to the bridge pier head construction position by the hoisting machine 17, and fixed to the hanging members 15 (FIG. 3). Next, using the work gantry 31, a formwork and a reinforcing bar (not shown) of the pier head 1 are assembled, and concrete is cast to construct the pier head 1. When the concrete of the pier head 1 is hardened, the scaffold position is adjusted by the hoisting machine 17 (chain block), and the column cap support 35 and the form support material 32 are adjusted to form a form, a reinforcing bar, and a PC steel, which are not shown. And concrete of the column capital 2 is poured (FIG. 4). At this time, a part of the H-shaped steel of the vent structure 10 is embedded in the concrete of the pier head 1 and the column head 2 respectively. When the structure type of the bridge body is a ramen structure, as shown in the left half of FIG.
When the bridge type is a continuous girder, the bottom formwork of the capital part 1 is applied as shown in the right half of FIG. 1 and the main shoe 22 and the temporary shoe are provided on the pier upper surface. 21 is installed and the bridge pier head 1 and the column cap 2 are cut off and constructed.

【0012】柱頭部2のコンクリートが硬化後、架設作
業車移動用レール52を敷設し、図5に示すように、張
出方向前面位置まで、レールを移動しレール後端をアン
カーで仮固定して架設作業車主枠50の組み込み準備を
する。主枠50を図示省略したトラックレーンまたはケ
ーブルクレーンで吊り上げ、ベント構前面(橋体張出方
向スパン中央部側)から組み込み、移動用レールに車輪
を介して載置し、移動用レールと共に張出第1ブロック
構築位置(図4位置)まで後退させ、ベント構10の横
梁12を架設作業車50に受け替え、支保工35、型枠
支持材32、作業構台31の支持をベント構10から架
設作業車50に負担させる。同様に反対側張出用の架設
作業車の組み込みを行うが、2台の架設作業車を同時に
組み込むスペースがないので第1ブロック60を張出構
築し、架設作業車を前進させ、反対側張出架設作業車を
組み込み、同様にベント構から横梁を受け替え、つい
で、公知の方法で柱頭部2から左右にバランスを取りな
がら交互に張出架設を行い橋体ブロック60を逐次施工
する。
After the concrete of the column capital 2 is hardened, a rail 52 for moving the erection work vehicle is laid, and as shown in FIG. 5, the rail is moved to the front position in the extending direction, and the rear end of the rail is temporarily fixed with an anchor. The installation work vehicle main frame 50 is prepared for installation. The main frame 50 is lifted by a truck lane or a cable crane (not shown), assembled from the front of the vent structure (the center of the span in the direction in which the bridge is extended), mounted on a moving rail via wheels, and extended with the moving rail. It is retracted to the first block construction position (the position shown in FIG. 4), the cross beam 12 of the vent structure 10 is replaced with an erection work vehicle 50, and the support 35, the form support material 32, and the work gantry 31 are supported from the vent structure 10. The work vehicle 50 is charged. Similarly, an installation work vehicle for the opposite side overhang is installed. However, since there is no space for installing two installation work vehicles at the same time, the first block 60 is extended and constructed, and the installation work vehicle is advanced, and the opposite side overhang is performed. An outrigger work vehicle is installed, the cross beam is similarly replaced from the vent structure, and then the bridge block 60 is successively constructed by alternately overhanging the bridge from the column capital 2 while keeping the balance from side to side in a known manner.

【0013】図6は図5の平面図で、左半分は図5のA
矢視図、右半分は図5のB矢視図を示している。張出前
面から主枠50を吊込み、レール52上に組み込み載置
し、図4位置まで後退させる。図7は図4のC、D矢視
図で、左半分は図4のC矢視図、右半分は図4のD矢視
図を示している。橋体が完成後、橋面より上方のベント
構を切断する。又、連続桁の場合は張出架設が完了して
橋脚間の橋体が連結した後、柱頭部2と橋脚上面の間の
ベント構H形鋼を切断除去し本沓22に橋体重量を支承
させ仮沓21を撤去する(図1右)。
FIG. 6 is a plan view of FIG. 5, and the left half of FIG.
The view on the arrow and the right half show the view on the arrow B in FIG. The main frame 50 is suspended from the front of the overhang, mounted on the rail 52, and retracted to the position shown in FIG. 7 is a view taken in the direction of arrows C and D in FIG. 4. The left half is a view taken in the direction of arrow C in FIG. 4, and the right half is a view taken in the direction of arrow D in FIG. After the bridge is completed, cut the vent structure above the bridge surface. In the case of a continuous girder, after the overhanging is completed and the bridge between the piers is connected, the bent H-shaped steel between the column cap 2 and the upper surface of the pier is cut off and the bridge body weight is added to the main shoe 22. The temporary shoe 21 is removed and supported (Fig. 1, right).

【0014】[0014]

【発明の効果】本発明の方法によれば、揚重機を備えた
ベント構をまず最初に架設して、地上で組み立てた作業
構台を揚重することで高所作業を最小限とし、安全性を
高めると同時に、梁材、支保工材、型枠などを橋脚頭
部、橋体柱頭部、張出橋体部と次々に転用し、又ベント
構鋼材の一部を張出し時のアンバランスモーメントに対
応するアンカーバーにも利用し、資機材の有効活用によ
る節減、安全性の向上、作業効率の向上などに絶大な効
果を得ることが可能となった。
According to the method of the present invention, a vent structure equipped with a lifting machine is first erected, and a work gantry assembled on the ground is lifted to minimize work at a high place, thereby improving safety. At the same time, beams, support materials, formwork, etc. are diverted one after another to the pier head, bridge column head, and overhang bridge body, and the unbalance moment when part of the vent structural steel is overhanged It can also be used for the anchor bar corresponding to, and it is possible to obtain tremendous effects such as saving by effective use of equipment and materials, improvement of safety and improvement of work efficiency.

【0015】なお、本発明の効果を詳細に上げると次の
とおりである。 (1)橋脚頭部施工用足場及びブラケット組立足場は、
従来、地盤から橋脚に添って足場を組みあげて組み立て
ていたが、地盤からの組み上げが不要になり、柱頭部施
工用ブラケットも不要になり、作業能率が著しく向上す
ると共に、作業の安全管理が極めて容易となる。 (2)柱頭部構築に使用する作業床・型枠材その他を、
そのまま架設作業車の張出架設施工に転用することがで
きる。架設作業車用の主枠を配置し、横梁を受け替えれ
ばそのまま張出架設作業の施工を開始することが出来
る。機材の転用が多くなり、トラック台数及び機材荷揚
げを低減することが出来る。 (3)柱頭部支保ブラケット固定用のアンカー及びPC
鋼棒が不要になる。仮沓で柱頭部を受ける構造型式では
テンポラリ鋼棒や、ストッパー用H鋼にベント構の形鋼
を利用することができ、全体作業が合理的になる。 (4)作業床の昇降は、揚重機で行うため足場の上下調
整が容易に出来る。 (5)橋脚頭部及び柱頭部施工工期を短縮することがで
き、張出架設作業の施工を早く開始することができ、全
体の作業日数を短縮することができる。
The effects of the present invention will be described below in detail. (1) The pier head construction scaffold and the bracket assembly scaffold are
In the past, scaffolding was assembled from the ground along the piers, but assembling from the ground is no longer necessary, brackets for capital construction are not required, work efficiency is significantly improved, and work safety management is improved. It becomes very easy. (2) Work floors, formwork materials, etc. used for construction of capitals,
It can be diverted as it is to erection work of erection work vehicle. If the main frame for the construction work vehicle is arranged and the cross beam is replaced, the construction of the overhang construction work can be started as it is. Diversion of the equipment is increased, and the number of trucks and unloading of the equipment can be reduced. (3) Anchor and PC for fixing capital support bracket
Steel bars are not required. In the structure type in which the temporary shoe is used to receive the capital, a bent steel bar can be used for the temporary steel bar and the H steel for the stopper, so that the entire work is streamlined. (4) Since the lifting and lowering of the work floor is performed by the hoist, the vertical movement of the scaffold can be easily adjusted. (5) The construction period of the pier head and the column capital can be shortened, the overhanging work can be started earlier, and the total number of working days can be shortened.

【図面の簡単な説明】[Brief description of the drawings]

【図1】実施例の柱頭部施工方法の説明図である。FIG. 1 is an explanatory view of a method for constructing a capital of an embodiment.

【図2】実施例の柱頭部施工方法の説明図である。FIG. 2 is an explanatory view of a method for constructing a capital of an embodiment.

【図3】実施例の柱頭部施工方法の説明図である。FIG. 3 is an explanatory view of a method for constructing a capital of an embodiment.

【図4】実施例の柱頭部施工方法の説明図である。FIG. 4 is an explanatory view of a method for constructing a column capital according to an embodiment.

【図5】架設作業車組み込みの側面図である。FIG. 5 is a side view of an installation work vehicle.

【図6】図5のA矢視及びB矢視図である。FIG. 6 is a view as seen from arrows A and B in FIG. 5;

【図7】図4のC矢視及びD矢視図である。FIG. 7 is a diagram viewed from arrows C and D in FIG. 4;

【図8】実施例の全体説明図である。FIG. 8 is an overall explanatory diagram of the embodiment.

【符号の説明】[Explanation of symbols]

1 橋脚頭部 2 柱頭部 3 橋脚 10 ベント
構 11 縦梁 12 横梁 13 柱 15 吊り材 17 揚重機(電動チェーンブロック) 18 チェー
ン 21 仮沓 22 本沓 23 テンポラリ鋼棒 31 作業構
台 32 型枠支持材 34 チェー
ン 35 支保工 50 架設作
業車(主枠) 51 主枠前部 52 レール 60 ブロック
DESCRIPTION OF SYMBOLS 1 Bridge pier head 2 Column head 3 Bridge pier 10 Vent structure 11 Vertical beam 12 Cross beam 13 Column 15 Suspension material 17 Lifting machine (Electric chain block) 18 Chain 21 Temporary shoe 22 Hontsutsu 23 Temporary steel rod 31 Work gantry 32 Form support 34 Chain 35 Shoring 50 Construction Work Vehicle (Main Frame) 51 Front of Main Frame 52 Rail 60 Block

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 柱頭部のアンカーバー鉄骨を兼ねた形鋼
から成る形鋼ベント構を橋脚頭部に据え付け、該ベント
構に橋軸に平行な縦梁及び該縦梁に直交する横梁を架設
し、該横梁及び/または該縦梁から揚重機を吊設し、そ
れぞれの梁から吊り材を吊下し、地上で組み立てた支保
工材、作業足場及び機材を揚重機で吊上げ、吊り材に受
け替え支持させ、その後、足場上で支保工取付、型枠組
立を行い、橋脚頭部及び柱頭部のコンクリートを打設
し、柱頭部構築後、前記横梁を架設作業車の横梁に転用
することを特徴とする張出架設桁橋の柱頭部の施工方
法。
(1) A section steel which also serves as an anchor bar for a column capital
Installation structural steel vent structure a pier head consisting of, in the vent structure bridged the cross beam orthogonal to the parallel longitudinal beams and said longitudinal beams in bridge axis, suspended the crane from the lateral beam and / or said longitudinal beams Then, suspend the hanging material from each beam, lift the supporting material, work scaffolding and equipment assembled on the ground with a lifting machine, transfer it to the hanging material and support it, and then attach the supporting work on the scaffold, formwork Assemble and cast concrete for pier head and column head
A method of constructing a column head of an overhanging girder bridge , wherein the cross beam is converted to a cross beam of an erection work vehicle after the column capital is constructed.
JP07213275A 1995-08-22 1995-08-22 Construction method of column capital of overhang girder bridge Expired - Fee Related JP3110985B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP07213275A JP3110985B2 (en) 1995-08-22 1995-08-22 Construction method of column capital of overhang girder bridge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP07213275A JP3110985B2 (en) 1995-08-22 1995-08-22 Construction method of column capital of overhang girder bridge

Publications (2)

Publication Number Publication Date
JPH0959932A JPH0959932A (en) 1997-03-04
JP3110985B2 true JP3110985B2 (en) 2000-11-20

Family

ID=16636415

Family Applications (1)

Application Number Title Priority Date Filing Date
JP07213275A Expired - Fee Related JP3110985B2 (en) 1995-08-22 1995-08-22 Construction method of column capital of overhang girder bridge

Country Status (1)

Country Link
JP (1) JP3110985B2 (en)

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JP4980257B2 (en) * 2008-01-30 2012-07-18 オリエンタル白石株式会社 Construction method for column head construction, method for constructing mobile work vehicle using part thereof, and method for extending bridge
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