JPH1096211A - Method for removing bridge - Google Patents
Method for removing bridgeInfo
- Publication number
- JPH1096211A JPH1096211A JP25052696A JP25052696A JPH1096211A JP H1096211 A JPH1096211 A JP H1096211A JP 25052696 A JP25052696 A JP 25052696A JP 25052696 A JP25052696 A JP 25052696A JP H1096211 A JPH1096211 A JP H1096211A
- Authority
- JP
- Japan
- Prior art keywords
- bridge
- girder
- bridge girder
- barge
- bridge 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.)
- Pending
Links
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、河川等に架設され
ている橋梁の撤去方法に関する。The present invention relates to a method for removing a bridge installed on a river or the like.
【０００２】[0002]
【従来の技術】河川等の水路に架設されている橋梁は、
道路事情または老朽化のため、撤去して新規橋梁に架設
替えする需要が増大している。2. Description of the Related Art Bridges installed in waterways such as rivers are:
Due to road conditions or aging, the demand for removing and replacing with new bridges is increasing.
【０００３】既設橋梁の撤去方法の従来技術として、
「道路構造物の解体技術に関する調査研究報告書」
（（財）道路保全技術センター道路構造物保全協会解体
部会）によれば、図１６、図１７に示す方法が知られて
いる。As a conventional technique for removing an existing bridge,
"Survey and Research Report on Road Structure Demolition Technology"
According to the Road Conservation Technology Center Road Structure Conservation Association Dismantling Subcommittee, the methods shown in FIGS. 16 and 17 are known.
【０００４】図１６は、従来技術における橋梁の撤去方
法を示した側面図で、橋桁２０上の床版コンクリート２
１を除去し橋軸方向で分割した主桁２２を、橋体上のク
ローラクレーン２３で吊り上げ、トラック２４に積込み
解体場所へ撤去する方法（以下、従来技術１という。）
である。FIG. 16 is a side view showing a method of removing a bridge according to the prior art.
1 is removed and the main girder 22 divided in the bridge axis direction is lifted by a crawler crane 23 on the bridge body, loaded on a truck 24 and removed to a dismantling place (hereinafter referred to as prior art 1).
It is.
【０００５】尚、Ｐ1 、Ｐ2 、Ｐ3 、Ｐ4 は橋脚であ
り、６は水路面、Ａ2 は橋台である。また、図１７は、
他の従来技術における橋梁の撤去方法を示した側面図
で、ゲルバー桁３０上の床版コンクリートを除去し橋軸
方向で分割した主桁３１を、橋台Ａ1 ，Ａ2 側はトラッ
ククレーン３２で撤去し、水路面６側の主桁３１は、桁
受け３３が設けられた台船３４を主桁３１の下部に位置
させ、満潮を利用して主桁３１を持ち上げ、撤去する方
法（以下、従来技術２という。）である。Incidentally, P 1 , P 2 , P 3 and P 4 are piers, 6 is a waterway surface, and A 2 is an abutment. Also, FIG.
In side view showing a removing method of the bridges in the other prior art, a main girder 31 divided by Hashijiku direction to remove the slab concrete on Gelber digits 30, abutments A 1, A 2 side in truck cranes 32 The main girder 31 on the waterway surface 6 side is removed by positioning a barge 34 provided with a girder support 33 below the main girder 31, lifting the main girder 31 by using high tide, and removing the main girder 31 (hereinafter, referred to as a method) Conventional technology 2).
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、前記従
来技術１は、クローラクレーンを用いる方法であるか
ら、吊られる主桁は３５トン程度が限度となり、橋梁が
比較的小型であるか、または、軽量化のため床版コンク
リートを除去した橋桁を橋軸方向に分割した主桁とする
必要があり、作業効率が悪いという問題点がある。However, since the prior art 1 is a method using a crawler crane, the main girder to be suspended is limited to about 35 tons, and the bridge is relatively small or lightweight. For this purpose, the bridge girder from which the slab concrete has been removed must be used as the main girder divided in the bridge axis direction, and there is a problem that work efficiency is poor.
【０００７】また、前記従来技術２は、台船を用いるも
のの満潮時を利用して主桁を持ち上げ、撤去する方法で
あるので、撤去作業に長時間を要するという問題点があ
り、また、長時間の作業は、他の通航船の航行を阻害す
るという問題点がある。Further, the prior art 2 uses a barge to lift and remove the main girder at high tide, so that the removal operation requires a long time. There is a problem that time work hinders the navigation of other passing vessels.
【０００８】また、前記従来技術以外の想定技術とし
て、橋梁の撤去に大型のフローティングクレーンを使用
すれば一挙に解決できるが、通常、河川等の水路には複
数の橋が架設されており、前記大型のフローティングク
レーンは、他の既設橋梁の下部の通航が不可能であり、
使用できない制約がある。[0008] As a supposed technology other than the conventional technology, a large floating crane can be used to remove a bridge, which can be solved at once. However, usually, a plurality of bridges are installed in waterways such as rivers. Large floating cranes cannot pass under other existing bridges,
Some restrictions cannot be used.
【０００９】本発明は、河川等の水路に架設された橋桁
の撤去作業を、安全かつ迅速に行うことを目的とするも
のである。An object of the present invention is to safely and promptly remove a bridge girder installed on a waterway such as a river.
【００１０】[0010]
【課題を解決するための手段】前述の課題を解決する第
一の手段は、橋桁の両端を仮支持した状態で切断すると
ともに、該橋桁を橋脚内に配置された対の吊り上げ機構
付台船で持ち上げて陸側橋桁方向へ移動させ、前記橋桁
が陸側橋桁上に載置されたら、橋桁の先端に位置する台
船を撤去し、橋桁の後端部に位置する台船で該橋桁を前
記陸側橋桁上へ移動することを特徴とする橋梁の撤去方
法である。A first means for solving the above-mentioned problems is to cut the bridge girder while temporarily supporting both ends thereof and to connect the bridge girder to a pair of barges with a lifting mechanism arranged in a pier. And move it in the direction of the land side bridge girder.When the bridge girder is placed on the land side bridge girder, remove the barge located at the tip of the bridge girder and replace the bridge girder with the barge located at the rear end of the bridge girder. A method for removing a bridge, wherein the bridge is moved on the land-side bridge girder.
【００１１】前記の第一の手段によれば、橋桁は陸側橋
桁上を利用して陸地へ移動し解体されるので、解体場所
への台船の移動がないので、他船の通航を阻害すること
無く橋桁が撤去できる。According to the first means, since the bridge girder moves to the land using the land bridge girder and is dismantled, there is no movement of the barge to the dismantling place, so that traffic of other ships is hindered. The bridge girder can be removed without having to do it.
【００１２】前述の課題を解決する第二の手段は、橋桁
の両端を仮支持した状態で１スパン半の長さに切断する
とともに、該橋桁を橋脚を挟んで配置された対の吊り上
げ機構付台船で持ち上げて陸側橋桁方向へ移動させ、前
記橋桁が陸側橋桁上に載置されたら、橋桁の後端部の台
船を先頭の台船と隣接させて橋脚内に配置し、その後、
橋桁の先頭に位置する台船を撤去し、橋桁の後端部に位
置する台船で該橋桁を前記陸側橋桁上へ移動することを
特徴とする橋梁の撤去方法である。A second means for solving the above-mentioned problem is to cut the bridge girder to a length of one and a half span while temporarily supporting both ends of the bridge girder, and to attach the bridge girder to a pair of lifting mechanisms arranged with a pier sandwiched therebetween. Lift up with a barge and move in the direction of the land side bridge girder, and when the bridge girder is placed on the land side girder, place the barge at the rear end of the bridge girder adjacent to the leading barge and place it in the pier, ,
A method for removing a bridge, comprising removing a barge located at the head of a bridge girder, and moving the bridge girder onto the land-side bridge girder with a barge located at the rear end of the bridge girder.
【００１３】前記の第二の手段によれば、１スパン半の
巨大橋桁が陸側橋桁上を利用して台船により陸側に移動
されるので、他船の通航を阻害すること無く橋桁が撤去
できる。According to the second means, since the giant bridge girder of one and a half spans is moved to the land side by the barge using the land side bridge girder, the bridge girder can be formed without obstructing the passage of other ships. Can be removed.
【００１４】また、橋桁の切断時には、橋桁が中央寄り
の橋脚で支持されて切断されるので安全である。Further, when the bridge girder is cut, the bridge girder is cut off while being supported by the pier near the center.
【００１５】[0015]
【発明の実施の形態】以下、本発明にかかる橋梁の撤去
方法について、図面を参照しながら説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for removing a bridge according to the present invention will be described below with reference to the drawings.
【００１６】図１は、連続箱桁橋で例示した本発明にか
かる橋梁の撤去方法の準備工程を示す橋梁の側面図であ
る。FIG. 1 is a side view of a bridge showing a preparation step of a method for removing a bridge according to the present invention exemplified by a continuous box girder bridge.
【００１７】図１において、１、２、３、４、５は連続
箱桁からなる橋桁で、その中で１、２、４、５は側径間
桁、３は中央径間桁である。In FIG. 1, reference numerals 1, 2, 3, 4, and 5 denote bridge girders composed of continuous box girders, in which 1, 2, 4, and 5 denote side span girders and 3 denotes a center span girder.
【００１８】Ａ1 およびＡ2 は橋台で、前記橋桁１、
２、３、４、５は、橋脚Ｐ1 、Ｐ2 、Ｐ3 、Ｐ4 上に架
けられており、６は河川等の水路面を示す。A 1 and A 2 are abutments, and the bridge girder 1,
2, 3, 4, and 5 are bridged on piers P 1 , P 2 , P 3 , and P 4 , and 6 indicates a waterway surface such as a river.
【００１９】７、８は仮受連結梁で、中央径間桁３の撤
去に備えて設けられたものである。９、９は中央径間桁
３の切断部であり、モーメントが中立する反曲点または
その近傍が望ましい。Reference numerals 7 and 8 denote temporary connecting beams, which are provided in preparation for removing the center span girder 3. Numerals 9 and 9 denote cut portions of the center span girder 3, preferably at or near the inflection point where the moment is neutral.
【００２０】また、１０、１０は、側径間桁１、５がコ
ンクリート製で構築されている場合の、鋼製の側径間桁
２、４、との桁連結部を示しており、図示しない対の支
承沓に各々架設されている。尚、１０、１０は側径間桁
１、５が鋼製の場合は、切断部となる。Numerals 10 and 10 designate girder connecting portions with steel side girder beams 2 and 4 when side girder beams 1 and 5 are made of concrete. Each is mounted on a pair of bearing shoes. In addition, 10 and 10 become cutting parts when the side span girders 1 and 5 are made of steel.
【００２１】図２（部分側面図）、図３（部分平面図）
および図４（図３のＡ−Ａ断面図）は、前記仮受連結梁
８の説明図で、側径間桁４および中央径間桁３上の床版
コンクリート１１を除去し、前記側径間桁４および中央
径間桁３の間にヒンジ８ａ，８ｂにより仮受連結梁８を
取付ける。この仮受連結梁８は、側径間桁４および中央
径間桁３の補強のために設けたものである。尚、８ｃは
中央径間桁３の切断後の反力を受ける固定材で、側径間
桁４と仮受連結梁８とをボルト締結で一体化したもので
ある。FIG. 2 (partial side view), FIG. 3 (partial plan view)
4 and FIG. 4 (a sectional view taken along line AA in FIG. 3) are explanatory views of the temporary receiving connection beam 8, in which the slab concrete 11 on the side span girder 4 and the center span girder 3 is removed, and The temporary connecting beam 8 is mounted between the span girder 4 and the center span girder 3 by hinges 8a and 8b. The temporary connection beam 8 is provided to reinforce the side span girder 4 and the center span girder 3. Reference numeral 8c denotes a fixing member that receives a reaction force after the center span girder 3 is cut, and is formed by integrating the side span girder 4 and the temporary connection beam 8 with bolts.
【００２２】尚、１３は既設のヒンジタイプの支承沓で
あり、図４における３ａ，３ａは二条の主桁、３ｂは横
桁、３ｃは主桁３ａ，３ａ間に設けられた添加物支持梁
である。Reference numeral 13 denotes an existing hinge-type support shoe. In FIG. 4, reference numerals 3a and 3a denote two main girder beams, 3b denotes a horizontal girder, and 3c denotes an additive support beam provided between the main girder beams 3a and 3a. It is.
【００２３】本発明は前記仮受連結梁７、８の取付けが
完了したら、中央径間桁３と側径間桁２、４との間の切
断を行う。切断部９の面は、図１、図２に示すように支
承沓１３、側径間桁２、４が載置された状態で中央寄り
で切断する。切断はガス切断またはプラズマ切断あるい
はカッターによる機械的切断のいずれでもよい。In the present invention, when the attachment of the temporary receiving connection beams 7 and 8 is completed, cutting between the center span girder 3 and the side span girder 2 and 4 is performed. As shown in FIGS. 1 and 2, the surface of the cutting portion 9 is cut near the center with the support shoe 13 and the side span girders 2 and 4 placed thereon. The cutting may be gas cutting, plasma cutting, or mechanical cutting with a cutter.
【００２４】中央径間桁３の切断に際し、図１に示すよ
うに、中央径間桁３の下方、即ち、橋脚Ｐ2,Ｐ3,の間
に、対の台船（１４）１４Ａ、１４Ｂを配置する。台船
１４Ａ、１４Ｂは間隔を調整できる連結体１４ａで連結
されており、船上には架構１４ｂ，１４ｂと吊り上げ機
構１５の架台１５ｂが分離可能に設けられている。[0024] Upon cleavage of the center span girder 3, as shown in FIG. 1, the lower center span girder 3, i.e., piers P 2, P 3, between the pair of barge (14) 14A, 14B Place. The hulls 14A, 14B are connected by a connecting body 14a whose distance can be adjusted, and the frames 14b, 14b and the gantry 15b of the lifting mechanism 15 are provided on the hull so as to be separable.
【００２５】図５は、図１の左側の台船１４Ａを上方か
ら見た平面図（台船１４Ｂも同一構造である）で、台船
１４Ａには、甲板上にウィンチ１４ｃおよび係留索１４
ｄが設けられ該台船１４Ａの微調整移動を行う構造とな
っており、即ち、前記台船１４Ａの移動は、一方のウィ
ンチ１４ｃで係留索１４ｄを手繰り寄せ、他方のウィン
チ１４ｃで他方の係留索１４ｄを繰り出すことにより行
う。FIG. 5 is a plan view of the barge 14A on the left side of FIG. 1 as viewed from above (the barge 14B has the same structure). The barge 14A has a winch 14c and a mooring line 14 on the deck.
d is provided to perform fine adjustment movement of the barge 14A. That is, the movement of the barge 14A is performed by dragging the mooring line 14d with one winch 14c and mooring the other with the other winch 14c. This is performed by extending the rope 14d.
【００２６】前記台船１４Ａ，１４Ｂには前記架構１４
ｂ，１４ｂが中央径間桁３の下方に位置するように配置
される。The frame 14A, 14B is provided with the frame 14
b and 14b are arranged so as to be located below the center span girder 3.
【００２７】中央径間桁３の床版３ｂにはハッチングで
示す貫通長孔３ｄが穿たれ、吊り上げ機構１５の架台１
５ａの支柱１５ｄおよび該支柱１５ｄのブレース材（図
示せず）が貫通する。同じように、台船１４の架構１４
ｂ，１４ｂの支柱も前記中央径間桁３の床版３ｂの貫通
長孔３ｄを貫通する。さらに、３ｅは同じように中央径
間桁３の主桁３ａに穿たれた貫通孔で、吊り上げ機構１
５の吊り索１５ｃが貫通する。吊り索１５ｃは主桁３ａ
の底面に係止される。The floor slab 3b of the center span girder 3 is provided with a through-hole 3d indicated by hatching, and the base 1 of the lifting mechanism 15 is provided.
The support 15d of 5a and the brace material (not shown) of the support 15d penetrate. Similarly, the frame 14 of the barge 14
The columns b and 14b also pass through the through-holes 3d of the floor slab 3b of the center span girder 3. 3e is a through hole formed in the main girder 3a of the center span girder 3 in the same manner.
5 hanging cables 15c penetrate. The hanging cable 15c is the main girder 3a.
It is locked to the bottom of.
【００２８】図６は、図５のＡ矢視図で、台船１４Ａ上
の架構１４ｂに吊り上げ機構１５の支柱１５ｄが係合し
ており、中央径間桁３が破線図の如く降下する状態を示
している。尚、図６に図示したブレース材１５ｅおよび
水平継材１５ｆは取外し可能である。FIG. 6 is a view taken in the direction of arrow A in FIG. 5, in which the support 15d of the lifting mechanism 15 is engaged with the frame 14b on the barge 14A, and the center span girder 3 descends as shown by the broken line. Is shown. The brace 15e and the horizontal joint 15f shown in FIG. 6 are removable.
【００２９】台船１４Ａの架構１４ｂの支柱１４ｂ′と
前記吊り上げ機構１５、１５の架構１５ａの支柱１５ｄ
は、フランジによるボルト締結で分離可能となってい
る。The column 14b 'of the frame 14b of the barge 14A and the column 15d of the frame 15a of the lifting mechanisms 15,15.
Can be separated by bolting with a flange.
【００３０】尚、台船１４Ｂも前述と同様の構造で中央
径間桁３に係合している。吊り上げ機構１５、１５のセ
ッティングが完了したら、該吊り上げ機構１５、１５の
吊り索１５ｃの下部を主桁３ａの下面に係止する。その
後、前記仮連結梁７、８の側径間桁２、４側の連結を解
除する。The barge 14B is also engaged with the center span girder 3 with the same structure as described above. When the setting of the lifting mechanisms 15, 15 is completed, the lower part of the hanging cable 15c of the lifting mechanisms 15, 15 is locked to the lower surface of the main girder 3a. Then, the connection of the temporary connecting beams 7 and 8 on the side span girders 2 and 4 is released.
【００３１】尚、台船１４の配置は、中央径間桁３の切
断に際し前記仮受連結梁７、８で充分仮支持される場合
は不要であるが、対の台船１４、１４の吊り上げ機構１
５、１５で中央径間桁３の両端を支持しながら切断すれ
ばより安全である。The barge 14 is not necessary if it is sufficiently temporarily supported by the temporary connection beams 7 and 8 when the center span girder 3 is cut, but the barges 14 are lifted. Mechanism 1
It is safer to cut while supporting both ends of the center span girder 3 at 5 and 15.
【００３２】吊り上げ機構１５、１５について、図６に
より説明すると、ジャッキ１５ａと架台１５ｂとから構
成され、ジャッキ１５ａは橋桁下部に係止されたストラ
ンド等の吊り索１５ｃを２ケのクランプ（図示せず）で
交互に把持しシリンダー機構（図示せず）で該把持状態
のクランプを上下動されることにより橋桁の上昇、下降
を行わせるもので、ＶＳＬジャッキ（商標）として公知
のものである。該吊り上げ機構１５は、同様の機能のも
のであれば、特に、前記ＶＳＬジャッキに限定されな
い。前記架台１５ｂは、台船１４に固定された架構１４
ｂに前記架台１５ｂの柱１５ｄが取外し自在に取付けら
れている。Referring to FIG. 6, the lifting mechanisms 15, 15 are composed of a jack 15a and a gantry 15b, and the jack 15a is provided with two hanging ropes 15c such as strands fixed to the lower part of the bridge girder by two clamps (not shown). The bridge girder is raised and lowered by alternately holding the clamp in the holding state by a cylinder mechanism (not shown), and is known as a VSL jack (trademark). The lifting mechanism 15 is not particularly limited to the VSL jack as long as it has a similar function. The frame 15b is a frame 14 fixed to the barge 14.
The column 15d of the gantry 15b is removably attached to b.
【００３３】図７は、本発明の次工程を示す橋梁の側面
図で、前記吊り上げ機構１５、１５で中央径間桁３を側
径間桁２、４より上方に吊り上げ、台船１４Ａ、１４Ｂ
を側径間桁４方向へ移動し、中央径間桁３の先端を側径
間桁４の上部に置く。図示しないが、側径間桁４の上部
には、中央径間桁３の移動を円滑にするため、台車等の
滑動体が設けられる。FIG. 7 is a side view of the bridge showing the next step of the present invention. The center span girders 3 are lifted above the side span girders 2 and 4 by the hoisting mechanisms 15 and 15, and the barges 14A and 14B.
Is moved in the direction of the side span girder 4, and the tip of the center span girder 3 is placed on the upper side of the side span girder 4. Although not shown, a sliding body such as a bogie is provided on the upper side of the side span girder 4 in order to smoothly move the center span girder 3.
【００３４】中央径間桁３の先端が側径間桁４に置かれ
たら、台船１４Ｂを退避させる。この退避は、吊り上げ
機構１５の架台１５ｂを台船１４Ｂの架構１４ｂからク
レーン等を使用して撤去させ、台船１４Ｂを橋桁の幅方
向に移動させて退避させる。When the tip of the center span girder 3 is placed on the side span girder 4, the barge 14B is retracted. In this evacuation, the platform 15b of the lifting mechanism 15 is removed from the frame 14b of the barge 14B using a crane or the like, and the barge 14B is moved in the width direction of the bridge girder and retracted.
【００３５】図８は、本発明の次工程を示す橋梁の側面
図で、残りの台船１４Ａで中央径間桁３の後端部を吊り
上げながら、引続き側径間桁４方向へ移動する。移動に
際しては、側径間桁４上にウィンチ等を設けて牽引と併
用してもよい。FIG. 8 is a side view of the bridge showing the next step of the present invention. The bridge is moved in the direction of the side span girder 4 while the rear end of the center span girder 3 is lifted by the remaining barge 14A. When moving, a winch or the like may be provided on the side span girder 4 and used together with traction.
【００３６】中央径間桁３が完全に側径間桁４上に載置
されたら、公知の牽引装置により側径間桁５を経由して
陸地へ移動され、解体される。When the center span girder 3 is completely placed on the side span girder 4, the center span girder 3 is moved to the land via the side span girder 5 by a known traction device and disassembled.
【００３７】図９は、本発明の次工程を示す橋梁の側面
図で、中央径間桁３が撤去されたら、橋脚Ｐ3,Ｐ4 の間
に、再び、対の台船１４Ａ，１４Ｂを配置し前述と同様
の方法で、側径間桁４を陸側の側径間桁５上に移動さ
せ、陸側へ移動して撤去する。[0037] Figure 9 is a side view of a bridge showing the next step of the present invention, when the center span girder 3 is removed, while the piers P 3, P 4, again, the pair barge 14A, and 14B The side span girder 4 is moved on the land side side span girder 5 in the same manner as described above, and then moved to the land side and removed.
【００３８】図１０は、本発明の次工程を示す橋梁の側
面図で、前述のとおり、側径間桁４が撤去されたら、残
りの側径間桁２も前述と同様の方法で陸側へ撤去する。FIG. 10 is a side view of the bridge showing the next step of the present invention. As described above, when the side span girder 4 is removed, the remaining side span girder 2 is also moved to the land side in the same manner as described above. To remove.
【００３９】尚、側径間桁１、５は、水深の浅い部分の
架設であり、コンクリート製でもあるので、適当に細分
化して撤去され、また、鋼製の場合も撤去は同様であ
る。The side span girders 1 and 5 are erected at a shallow portion of the water depth and are also made of concrete. Therefore, the side span girders 1 and 5 are appropriately divided and removed, and the same applies to the case of steel.
【００４０】図１１〜図１５は、本発明の橋梁の撤去方
法の第二の実施の形態に関する橋梁の側面図である。FIGS. 11 to 15 are side views of a bridge according to a second embodiment of the method for removing the bridge of the present invention.
【００４１】図１１において、この発明においては、中
央径間桁３の中央線Φに切断部９を形成する。尚、１０
は側径間桁４、５の桁連結部であり、１スパン半の橋桁
（３、４）を陸揚げせんとするものである。橋桁は中央
寄りの橋脚Ｐ3 およびＰ4 で支持された状態で切断され
る。尚、切断部９には、前述の実施の形態と同様に、仮
受連結梁７を取付け、また、側径間桁４、５の桁継ぎ目
で支持が不安定な場合は、仮受連結梁８を設ければよ
い。In FIG. 11, in the present invention, a cut portion 9 is formed at the center line Φ of the center span girder 3. In addition, 10
Is a girder connection part of side span girder 4,5, and is used for landing a bridge girder (3,4) of 1 and a half span. The bridge girder is cut while being supported by piers P 3 and P 4 near the center. The temporary connection beam 7 is attached to the cut portion 9 in the same manner as the above-described embodiment. 8 may be provided.
【００４２】図１２は、本発明の次工程を示した橋梁の
側面図で、橋桁（３、４）の後端部（橋脚Ｐ2,Ｐ3 の
間）と、橋桁（３、４）の先端部（橋脚Ｐ3,Ｐ4 の間）
の間に台船１４Ａと台船１４Ｂを配置する。[0042] Figure 12 is a side view of a bridge showing the next step of the present invention, the rear end portion of the bridge girder (3, 4) and (between piers P 2, P 3), girders of (3,4) tip (between piers P 3, P 4)
The barge 14A and the barge 14B are arranged between them.
【００４３】その後、台船１４Ａと台船１４Ｂの吊り上
げ機構１５で橋桁（３、４）を吊り上げ、陸側へ移動
し、橋桁（３、４）の先端が側径間桁５上に載置された
ら、橋桁（３、４）の後端部を一時橋脚Ｐ3 に支持さ
せ、台船１４Ａを離脱させて、橋脚Ｐ3 とＰ4 の間に配
置されている隣の台船１４Ｂの後方に回航し、橋桁
（３、４）の後端部を支持させる。Thereafter, the bridge girders (3, 4) are lifted by the lifting mechanism 15 of the barges 14A and 14B and moved to the land side, and the ends of the bridge girders (3, 4) are placed on the side span girders 5. When the rear end portion is supported in the temporary piers P 3 the bridge girder (3, 4), thereby disengaging the barge 14A, behind the next, which is arranged between the piers P 3 and P 4 barge 14B And support the rear end of the bridge girder (3, 4).
【００４４】図１３は、本発明の次工程を示した橋梁の
側面図で、台船１４Ａが橋脚Ｐ3 とＰ4 の間に配置され
たら、台船１４Ｂを離脱させ、台船１４Ａで橋桁（３、
４）を吊り上げながら、陸側へ移動させる。[0044] Figure 13 is a side view of a bridge showing the next step of the present invention, when the barge 14A is disposed between the piers P 3 and P 4, thereby disengaging the barge 14B, girders in barge 14A (3,
4) Lift and move to the land side.
【００４５】図１４は、本発明の次工程を示した橋梁の
側面図で、台船１４Ａが橋脚Ｐ4 に当接しそうになった
ら、台船１４Ｂを再び配置し、台船１４Ａを離脱させ
る。[0045] Figure 14 is a side view of a bridge showing the next step of the present invention, when the barge 14A becomes likely contact a pier P 4, again placing the barge 14B, disengaging the barge 14A .
【００４６】図１５は、本発明の次工程を示した橋梁の
側面図で、前記で配置された台船１４Ｂで橋桁（３、
４）をさらに陸側へ移動させる。当然、移動について
は、陸側のウィンチ等の牽引装置を併用してもよい。FIG. 15 is a side view of the bridge showing the next step of the present invention. The bridge girder (3,
Move 4) further to the land side. Naturally, a traction device such as a land-side winch may be used for movement.
【００４７】橋梁の反対側の橋桁（２、３）も前述と同
様の方法で反対側の陸上へ移動させ、解体される。The bridge girders (2, 3) on the opposite side of the bridge are moved to the land on the opposite side in the same manner as described above and dismantled.
【００４８】[0048]
【発明の効果】本発明は、以上のとおりであるから、橋
桁は既存の側径間桁上を使用して陸上の既設道路へ移動
されるので、該既設道路を解体場所として使用でき、台
船で運搬するケースのように航路を確保する必要がな
く、また、他船の通航を阻害することがない。As described above, according to the present invention, since the bridge girder is moved to the existing road on land using the existing span girder, the existing road can be used as a dismantling place. There is no need to secure a navigation route as in the case of transport by ship, and there is no hindrance to the passage of other ships.
【００４９】さらに、橋桁を台船で運搬し、解体場所で
陸揚げしないので、特殊なクレーン等の設備も必要とし
ない利点がある。Further, since the bridge girder is transported by the barge and not landed at the dismantling place, there is an advantage that no special crane or other equipment is required.
【図１】本発明にかかる橋梁の撤去工程を示す側面図。FIG. 1 is a side view showing a bridge removing step according to the present invention.
【図２】本発明の橋梁の撤去方法に使用する仮受連結梁
の側面図。FIG. 2 is a side view of a temporary connection beam used in the method for removing a bridge of the present invention.
【図３】本発明の橋梁の撤去方法に使用する仮受連結梁
の平面図。FIG. 3 is a plan view of a temporary connection beam used in the bridge removal method of the present invention.
【図４】図３のＡ矢視図。FIG. 4 is a view taken in the direction of the arrow A in FIG. 3;
【図５】本発明の橋梁の撤去方法に使用する台船と橋桁
の関係を示す平面図。FIG. 5 is a plan view showing a relationship between a barge and a bridge girder used in the method for removing a bridge according to the present invention.
【図６】図５のＢ矢視図。FIG. 6 is a view as seen from the arrow B in FIG. 5;
【図７】本発明にかかる橋梁の撤去工程を示す側面図。FIG. 7 is a side view showing a bridge removing step according to the present invention.
【図８】本発明にかかる橋梁の撤去工程を示す側面図。FIG. 8 is a side view showing a bridge removing step according to the present invention.
【図９】本発明にかかる橋梁の撤去工程を示す側面図。FIG. 9 is a side view showing a bridge removing step according to the present invention.
【図１０】本発明にかかる橋梁の撤去工程を示す側面
図。FIG. 10 is a side view showing a bridge removing step according to the present invention.
【図１１】本発明の第二の実施の形態にかかる橋梁の撤
去工程を示す側面図。FIG. 11 is a side view showing a bridge removing step according to the second embodiment of the present invention.
【図１２】本発明の第二の実施の形態にかかる橋梁の撤
去工程を示す側面図。FIG. 12 is a side view showing a bridge removing step according to the second embodiment of the present invention.
【図１３】本発明の第二の実施の形態にかかる橋梁の撤
去工程を示す側面図。FIG. 13 is a side view showing a bridge removing step according to the second embodiment of the present invention.
【図１４】本発明の第二の実施の形態にかかる橋梁の撤
去工程を示す側面図。FIG. 14 is a side view showing a bridge removing step according to the second embodiment of the present invention.
【図１５】本発明の第二の実施の形態にかかる橋梁の撤
去工程を示す側面図。FIG. 15 is a side view showing a bridge removing step according to the second embodiment of the present invention.
【図１６】従来技術１の側面図。FIG. 16 is a side view of the prior art 1;
【図１７】従来技術２の側面図。FIG. 17 is a side view of the second prior art.
１ 橋桁（側径間桁） ２ 橋桁（側径間桁） ３ 橋桁（中央径間桁） ４ 橋桁（側径間桁） ５ 橋桁（側径間桁） Ｐ1 橋脚 Ｐ2 橋脚 Ｐ3 橋脚 Ｐ4 橋脚 ６ 水路面 ７ 仮受連結梁 ８ 仮受連結梁 ９ 切断部 １０ 桁連結部（切断部） １１ 床版コンクリート １３ 支承沓 １４ 台船 １５ 吊り上げ機構1 Bridge girder (side span girder) 2 Bridge girder (side span girder) 3 Bridge girder (center span girder) 4 Bridge girder (side span girder) 5 Bridge girder (side span girder) P 1 Pier P 2 Pier P 3 Pier P 4 Bridge pier 6 Waterway surface 7 Temporary connecting beam 8 Temporary connecting beam 9 Cutting part 10 Girder connecting part (cutting part) 11 Floor slab concrete 13 Bearing shoe 14 Barge 15 Lifting mechanism
Claims (2)
とともに、該橋桁を橋脚内に配置された対の吊り上げ機
構付台船で持ち上げて陸側橋桁方向へ移動させ、前記橋
桁が陸側橋桁上に載置されたら、橋桁の先端に位置する
台船を撤去し、橋桁の後端部に位置する台船で該橋桁を
前記陸側橋桁上へ移動することを特徴とする橋梁の撤去
方法。1. A bridge girder is cut in a state where both ends thereof are temporarily supported, and the bridge girder is lifted by a pair of barges with a lifting mechanism arranged in a pier and moved in a land side bridge girder direction. Removing the barge located at the tip of the bridge girder after being placed on the bridge girder, and moving the bridge girder onto the land-side bridge girder with the barge located at the rear end of the bridge girder; Method.
半の長さに切断するとともに、該橋桁を橋脚を挟んで配
置された対の吊り上げ機構付台船で持ち上げて陸側橋桁
方向へ移動させ、前記橋桁が陸側橋桁上に載置された
ら、橋桁の後端部の台船を先頭の台船と隣接させて橋脚
内に配置し、その後、橋桁の先頭に位置する台船を撤去
し、橋桁の後端部に位置する台船で該橋桁を前記陸側橋
桁上へ移動することを特徴とする橋梁の撤去方法。2. A bridge girder is cut to a length of one and a half spans while both ends of the bridge girder are temporarily supported, and the bridge girder is lifted up by a pair of barges with a lifting mechanism arranged with a pier interposed therebetween, and is moved toward the land side bridge girder. When the bridge girder is placed on the land-side bridge girder, the barge at the rear end of the bridge girder is placed in the pier adjacent to the leading barge, and then the barge located at the head of the bridge girder is moved. A method for removing a bridge, comprising removing the bridge girder and moving the bridge girder onto the land-side bridge girder using a barge located at the rear end of the bridge girder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25052696A JPH1096211A (en) | 1996-09-20 | 1996-09-20 | Method for removing bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25052696A JPH1096211A (en) | 1996-09-20 | 1996-09-20 | Method for removing bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1096211A true JPH1096211A (en) | 1998-04-14 |
Family
ID=17209213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25052696A Pending JPH1096211A (en) | 1996-09-20 | 1996-09-20 | Method for removing bridge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1096211A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040040695A (en) * | 2002-11-07 | 2004-05-13 | 주식회사 하이테크한상 | Temporary apparatus for dismantalement of slab |
| KR101153779B1 (en) | 2011-08-26 | 2012-06-07 | (주) 한국비계 | Device for bridge dismantle using the strand jack and its methode |
| CN110067206A (en) * | 2019-05-16 | 2019-07-30 | 成都建工路桥建设有限公司 | A kind of ovum type underpass bridge construction method |
| CN114855656A (en) * | 2022-05-25 | 2022-08-05 | 中国铁建港航局集团有限公司 | Construction method for dismantling old bridge by bridge girder erection machine |
-
1996
- 1996-09-20 JP JP25052696A patent/JPH1096211A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040040695A (en) * | 2002-11-07 | 2004-05-13 | 주식회사 하이테크한상 | Temporary apparatus for dismantalement of slab |
| KR101153779B1 (en) | 2011-08-26 | 2012-06-07 | (주) 한국비계 | Device for bridge dismantle using the strand jack and its methode |
| CN110067206A (en) * | 2019-05-16 | 2019-07-30 | 成都建工路桥建设有限公司 | A kind of ovum type underpass bridge construction method |
| CN110067206B (en) * | 2019-05-16 | 2020-08-18 | 成都建工路桥建设有限公司 | Construction method of egg-shaped underpass bridge |
| CN114855656A (en) * | 2022-05-25 | 2022-08-05 | 中国铁建港航局集团有限公司 | Construction method for dismantling old bridge by bridge girder erection machine |
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