JPH06185013A - Construction method of column head section of pc diagonal tension bridge - Google Patents

Construction method of column head section of pc diagonal tension bridge

Info

Publication number
JPH06185013A
JPH06185013A JP33916992A JP33916992A JPH06185013A JP H06185013 A JPH06185013 A JP H06185013A JP 33916992 A JP33916992 A JP 33916992A JP 33916992 A JP33916992 A JP 33916992A JP H06185013 A JPH06185013 A JP H06185013A
Authority
JP
Japan
Prior art keywords
cable
construction
stayed bridge
scaffolding
head section
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
JP33916992A
Other languages
Japanese (ja)
Other versions
JP2550846B2 (en
Inventor
Yasuhiko Kunichika
康彦 国近
Akio Yamauchi
明夫 山内
Nobuhide Wada
信秀 和田
Nobusada Aitsu
信貞 合津
Kazuyuki Abe
和之 阿部
Yasuyoshi Ito
恭義 伊藤
Hajime Ishihara
元 石原
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.)
Kajima Corp
Original Assignee
Kajima 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 Kajima Corp filed Critical Kajima Corp
Priority to JP33916992A priority Critical patent/JP2550846B2/en
Publication of JPH06185013A publication Critical patent/JPH06185013A/en
Application granted granted Critical
Publication of JP2550846B2 publication Critical patent/JP2550846B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To reduce the cost of a shoring material and shorten the construction period by providing an operation movable car to a scaffolding consisting of a bracket shoring projected to the head of a bridge pier and wire members hanging and holding a main girder, and using the operation car for the operation scaffolding. CONSTITUTION:A general scaffolding is assembled by diagonals 6 and a horizontal bracket shoring on a bridge pier 1, and after one or two blocks of a main tower 4 is constructed, the general scaffolding is removed to provide wagons 9 instead thereof. A climbing pole 10 is built up in a block part of the main tower 4, and the main tower 4 is constructed up to the top thereof by the climbing pole. After that, both right and left wagons 9 are used for scaffoldings to assemble a construction shorting 11 of a column head section 2 and a form, and bar arrangement, concrete placement, etc., are executed to carry out work of the column head section 2.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は、PC斜張橋の柱頭部
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 of constructing a pillar head of a PC cable-stayed bridge.

【0002】[0002]

【従来の技術】従来、PC斜張橋の施工方法として、移
動作業車(以下ワーゲンという)による張り出し工法が
一般に知られている。この種の施工方法は、橋脚の柱頭
部にブラケット支保工を用いてワーゲンを組み立てられ
るくらいの張り出し部を設置し、ここでワーゲンを組み
立て、このワーゲンを前方に順次送り出して主桁を架設
するものである。すなわち、主桁の既設部分よりこの主
桁既設部分に隣接する区分に張り出してワーゲンを設置
し、このワーゲンの上で型枠の組立、鉄筋の配筋、PC
鋼材の設置、そして、コンクリートの打設養生等を行っ
て1ブロックずつ施工するものである。この場合、ま
ず、柱頭部から施工が開始される。
2. Description of the Related Art Conventionally, as a construction method of a PC cable-stayed bridge, an overhanging method using a mobile work vehicle (hereinafter referred to as "wagen") is generally known. This kind of construction method is to install an overhanging part on the pillar head of the pier so that a wagon can be assembled using bracket support work, assemble the wagen here, and send this wagen forward in order to build the main girder. Is. That is, a wagon is installed by projecting from the existing part of the main girder to a section adjacent to the existing part of the main girder, and the formwork is assembled, the reinforcing bars are reinforced, and the PC is installed on the wagon.
Steel is installed, concrete is placed and cured, and the work is done block by block. In this case, first, the construction is started from the pillar.

【0003】従来、この柱頭部の施工は、ワーゲンは使
用せずに、橋脚の頂部に水平に突出するブラケット支保
工を組み立て、このブラケット支保工の上に総足場を組
んで行っていた。
Conventionally, the pillar heads have been constructed by constructing a bracket support work projecting horizontally on the top of the pier without using a wagon, and forming a total scaffold on the bracket support work.

【0004】[0004]

【発明が解決しようとする課題】しかし、このブラケッ
ト支保工は相当広い規模に組み立てる必要があるので、
大量の支保工材を必要とするため支保工材費が嵩み、ま
た、その組立及び解体に多くの手間暇がかかり、工期の
長期化が避けられない等の課題があった。
However, since this bracket support work needs to be assembled in a considerably wide scale,
Since a large amount of supporting material is required, the supporting material cost is increased, and much time and labor is required for assembling and disassembling the supporting material, and there is a problem that the construction period cannot be extended.

【0005】この発明は、以上の課題を解決するために
なされたもので、支保工材費の低減化及び工期の大幅短
縮化を可能にしたPC斜張橋の柱頭部の施工方法を提供
することを目的とする。
The present invention has been made in order to solve the above problems, and provides a method for constructing a stilt head of a PC cable-stayed bridge, which can reduce the cost of supporting materials and the construction period. The purpose is to

【0006】[0006]

【課題を解決するための手段】この発明に係るPC斜張
橋の柱頭部の施工方法は、橋脚の頂部に移動作業車を前
記橋脚の頂部に突設された支保工ブラケットと主桁を吊
って支持する斜材とで仮支持して設置し、この移動作業
車を作業足場として柱頭部施工用の支保工及び型枠の組
立、鉄筋の配筋、PC鋼材の設置、コンクリートの打設
等を行って柱頭部を施工する。
According to the method of constructing a column head of a PC cable-stayed bridge according to the present invention, a mobile work vehicle is mounted on the top of a pier, and a support bracket and a main girder projecting from the top of the pier are suspended. It is temporarily supported with a diagonal member that supports it, and this mobile work vehicle is used as a scaffolding for supporting pillars and assembling formwork, reinforcing bar reinforcement, PC steel material installation, concrete placement, etc. And perform the stigma.

【0007】[0007]

【実施例】図6はPC斜張橋の一例を示し、図におい
て、符号1はPC斜張橋の橋脚部、2は柱頭部、3はコ
ーベル部、4は主塔、5は主桁、そして、符号6は主桁
5を主塔4に支持する斜材である。また、図1〜図5
は、この発明に係るPC斜張橋の柱頭部の施工方法の一
実施例を示し、以下、PC斜張橋の施工方法を図に基づ
いて順をおって説明する。
EXAMPLE FIG. 6 shows an example of a PC cable-stayed bridge. In the figure, reference numeral 1 is a pier portion of a PC cable-stayed bridge, 2 is a column head, 3 is a corbel part, 4 is a main tower, 5 is a main girder, Reference numeral 6 is a diagonal member that supports the main girder 5 on the main tower 4. Moreover, FIGS.
Shows an embodiment of a method for constructing a stilt head of a PC cable-stayed bridge according to the present invention. Hereinafter, a method for constructing a PC cable-stayed bridge will be described in order with reference to the drawings.

【0008】 PC斜張橋の橋脚1の頂部に水平に突
出するブラケット支保工7を組み立て、このブラケット
支保工7を作業足場としてPC斜張橋のコーベル部3を
施工する(図1参照(a),(b))。この場合、ブラケット支
保工7は支保工材を可能な限り減らし、かつ、組立及び
解体に要する日数を可能な限り短縮するために小規模な
ものとする。
[0008] A horizontally supported bracket support 7 is assembled on the top of the pier 1 of the PC cable-stayed bridge, and the corbel part 3 of the PC cable-stayed bridge is constructed using the bracket support 7 as a work scaffold (see FIG. 1 (a ), (b)). In this case, the bracket support 7 is small in size in order to reduce the support material as much as possible and to reduce the number of days required for assembly and disassembly as much as possible.

【0009】 次に、このブラケット支保工7の上に
総足場8を組み立て、この総足場8において主塔3の1
ブロック乃至2ブロックを施工する(図2(a),(b) 参
照)。
Next, a total scaffold 8 is assembled on the bracket support work 7, and the total scaffold 8 is attached to the main tower 1 of the main scaffold 3.
Build blocks or 2 blocks (see Figures 2 (a) and 2 (b)).

【0010】 次に、主塔4の1ブロック乃至2ブロ
ックを施工できたら、総足場8を解体撤去し、この総足
場8に変えて主桁5を張り出し工法によって架設するた
めのワーゲン9を設置する。ワーゲン9の基端側はブラ
ケット支保工7で支持し、先端側は斜材6で主塔4の既
設部分に吊って支持する。ワーゲン9は従来のものを使
用し、また、左右の主桁5を同時に並行して施工できる
ように両側に設置する。
Next, when 1 block or 2 blocks of the main tower 4 can be constructed, the total scaffold 8 is dismantled and removed, the main girder 5 is replaced with this total scaffold 8, and a wagon 9 for erection by the construction method is installed. To do. The base end side of the wagon 9 is supported by a bracket support 7, and the tip end side is supported by a diagonal member 6 suspended from an existing part of the main tower 4. As the wagen 9, a conventional one is used, and the left and right main girders 5 are installed on both sides so that they can be simultaneously installed in parallel.

【0011】また、主塔4の2ブロック部分にクライミ
ングホーム10を組み立て、これより上の部分はこのクラ
イミングホーム10によって頂部まで順次施工する(図3
(a),(b) 参照)。
Further, the climbing home 10 is assembled on the two blocks of the main tower 4, and the portions above the climbing home 10 are sequentially constructed by the climbing home 10 to the top (FIG. 3).
(See (a) and (b)).

【0012】 一方、主塔4の施工と同時に、若しく
は主塔4の施工終了後に、左右ワーゲン9を作業足場に
して、柱頭部2の施工用の支保工11、型枠の組立、鉄筋
の配筋、PC鋼材の設置、コンクリートの打設等を行っ
て柱頭部2を施工する(図3参照(a),(b) )。
On the other hand, at the same time as the construction of the main tower 4 or after the construction of the main tower 4, the left and right wagons 9 are used as work scaffolds, and the supporting works 11 for the construction of the pillar head 2, the assembly of the formwork, and the arrangement of the reinforcing bars. The column head 2 is constructed by installing reinforcements, PC steel materials, placing concrete, etc. (see Fig. 3 (a), (b)).

【0013】 柱頭部2の施工が終了したら、ワーゲ
ン9を使用し、張り出し工法によって主桁4の全長を柱
頭部2に連続して施工する(図4,5 参照)。この場合、
柱頭部2を動かないように支保工11にアンカー部材12に
よって固定しておくものとする。
When the construction of the pillar head 2 is completed, the wagon 9 is used and the entire length of the main girder 4 is continuously constructed on the pillar head 2 by the overhanging method (see FIGS. 4 and 5). in this case,
It is assumed that the column head 2 is fixed to the support 11 by the anchor member 12 so as not to move.

【0014】なお、ブラケット支保工6,ワーゲン9及
び支保工11は主桁5の施工が完了したら撤去する。
The bracket support work 6, the wagon 9 and the support work 11 are removed when the main girder 5 is completed.

【0015】[0015]

【発明の効果】以上説明したように、この発明に係るP
C斜張橋の柱頭部の施工方法によれば、主桁を施工する
ためのワーゲンを作業足場とし、この上に柱頭部施工用
の支保工を組み立て、型枠、鉄筋、PC鋼材の組立、コ
ンクリートの打設等を行って柱頭部を施工するので、従
来必要であった大規模なブラケット支保工が不要にな
り、また、ブラケット支保工の組立、撤去作業も省略で
きるので、支保工材費の低減化及び工期の大幅短縮が図
れる。
As described above, the P according to the present invention
According to the method for constructing the stilts of the C cable-stayed bridge, the wagon for constructing the main girder is used as a work scaffold, and the support for stilts construction is assembled on this, and the formwork, rebar, and PC steel are assembled. Since the pillar head is constructed by pouring concrete, the large-scale bracket support work that was required in the past is no longer necessary, and the assembly and removal work of bracket support work can be omitted. And the construction period can be greatly shortened.

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

【図1】図(a)はこの発明に係るPC斜張橋の柱頭部
の施工方法の一実施例の施工工程を示す正面図、図
(b)はその側面図である。
FIG. 1 (a) is a front view showing a construction process of an embodiment of a method of constructing a stilt head of a PC cable-stayed bridge according to the present invention, and FIG. 1 (b) is a side view thereof.

【図2】図(a)はこの発明に係るPC斜張橋の柱頭部
の施工方法の一実施例の施工工程を示す正面図、図
(b)はその側面図である。
FIG. 2 (a) is a front view showing a construction step of an embodiment of a method of constructing a stilt head of a PC cable-stayed bridge according to the present invention, and FIG. 2 (b) is a side view thereof.

【図3】図(a)はこの発明に係るPC斜張橋の柱頭部
の施工方法の一実施例の施工工程を示す正面図、図
(b)はその側面図である。
FIG. 3 (a) is a front view showing a construction process of an embodiment of a method for constructing a stilt head of a PC cable-stayed bridge according to the present invention, and FIG. 3 (b) is a side view thereof.

【図4】この発明に係るPC斜張橋の柱頭部の施工方法
の一実施例の施工工程を示す正面図である。
FIG. 4 is a front view showing a construction process of an embodiment of a construction method of a pillar head portion of a PC cable-stayed bridge according to the present invention.

【図5】この発明に係るPC斜張橋の柱頭部の施工方法
の一実施例の施工工程を示す側面図である。
FIG. 5 is a side view showing a construction process of an embodiment of a construction method of a pillar head portion of a PC cable-stayed bridge according to the present invention.

【図6】PC斜張橋の一例を示す側面図である。FIG. 6 is a side view showing an example of a PC cable-stayed bridge.

【符号の説明】[Explanation of symbols]

1…PC斜張橋の橋脚部、2…柱頭部、3…コーベル
部、4…主塔、5…主桁、6…斜材、7…ブラケット支
保工、8…総足場、9…ワーゲン、10…クライミングホ
ーム、11…支保工、12…アンカー部材。
1 ... PC cable-stayed bridge pier, 2 ... Pillar head, 3 ... Corbel part, 4 ... Main tower, 5 ... Main girder, 6 ... Bracket, 7 ... Bracket support, 8 ... Total scaffolding, 9 ... Wagen, 10… Climbing home, 11… Support work, 12… Anchor member.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 合津 信貞 東京都港区元赤坂1丁目2番7号 鹿島建 設株式会社内 (72)発明者 阿部 和之 東京都港区元赤坂1丁目2番7号 鹿島建 設株式会社内 (72)発明者 伊藤 恭義 東京都港区元赤坂1丁目2番7号 鹿島建 設株式会社内 (72)発明者 石原 元 東京都港区元赤坂1丁目2番7号 鹿島建 設株式会社内 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Shinsada Aizu 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Kazuyuki Abe 1-2-2 Moto-Akasaka, Minato-ku, Tokyo No. 7 Kashima Construction Co., Ltd. (72) Inventor Kyoyoshi Ito 1-chome, Moto-Akasaka, Minato-ku, Tokyo No. 7 No. 7 Kashima Construction Co., Ltd. (72) Inventor, Gen-Akasaka, Minato-ku, Tokyo 1-chome No. 2-7 Kashima Construction Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 PC斜張橋の主桁を移動作業車を使用し
た張り出し工法によって主塔に斜材で支持しつつ施工す
るPC斜張橋の施工方法において、橋脚の頂部に前記移
動作業車を前記橋脚の頂部に突設された支保工ブラケッ
トと前記斜材とで仮支持して設置し、この移動作業車を
作業足場として柱頭部施工用の支保工及び型枠の組立、
鉄筋の配筋、PC鋼材の設置、コンクリートの打設等を
行うことを特徴とするPC斜張橋の柱頭部の施工方法。
1. A method for constructing a PC cable-stayed bridge in which a main girder of a PC cable-stayed bridge is constructed while supporting it on the main tower by diagonal members by an overhanging method using a mobile work vehicle, wherein the mobile work vehicle is installed at the top of a pier. Is temporarily supported by the support bracket and the diagonal member that are projected on the top of the bridge pier, and this mobile work vehicle is used as a work scaffold to assemble the support and the formwork for the stilt head construction,
A method of constructing a pillar head of a PC cable-stayed bridge, which comprises arranging reinforcing bars, installing PC steel, and placing concrete.
JP33916992A 1992-12-18 1992-12-18 Construction method of the pillar head of PC cable-stayed bridge Expired - Lifetime JP2550846B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP33916992A JP2550846B2 (en) 1992-12-18 1992-12-18 Construction method of the pillar head of PC cable-stayed bridge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP33916992A JP2550846B2 (en) 1992-12-18 1992-12-18 Construction method of the pillar head of PC cable-stayed bridge

Publications (2)

Publication Number Publication Date
JPH06185013A true JPH06185013A (en) 1994-07-05
JP2550846B2 JP2550846B2 (en) 1996-11-06

Family

ID=18324896

Family Applications (1)

Application Number Title Priority Date Filing Date
JP33916992A Expired - Lifetime JP2550846B2 (en) 1992-12-18 1992-12-18 Construction method of the pillar head of PC cable-stayed bridge

Country Status (1)

Country Link
JP (1) JP2550846B2 (en)

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KR100820299B1 (en) * 2007-05-15 2008-04-08 삼성물산 주식회사 Temporary structure and precast concrete beam of pylon setting method using the bracket
CN102140773A (en) * 2011-01-25 2011-08-03 盖州市思拉堡温泉小镇开发有限公司 Steel-concrete bridge
CN109098092A (en) * 2018-09-11 2018-12-28 中铁三局集团有限公司 A kind of hundred misso tower line type control of H-type and rapid constructing method
CN110042756A (en) * 2019-04-03 2019-07-23 中铁大桥局集团有限公司 Bridge high tower construction method and its construction equipment
CN109958067A (en) * 2019-05-05 2019-07-02 中交一公局第三工程有限公司 Construction bracket apparatus and system
CN112663507A (en) * 2020-12-23 2021-04-16 浙江省大成建设集团有限公司 Tower beam synchronous construction method for short-tower cable-stayed bridge
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CN114411568A (en) * 2022-03-02 2022-04-29 四川省交通建设集团股份有限公司 Asynchronous construction method for steel tube concrete lattice hollow pier
CN114411568B (en) * 2022-03-02 2023-08-15 四川省交通建设集团股份有限公司 Asynchronous construction method for hollow pier of concrete filled steel tube lattice

Also Published As

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