JPS6255306A - Method for withdrawing reinforced concrete floor panel of bridge - Google Patents
Method for withdrawing reinforced concrete floor panel of bridgeInfo
- Publication number
- JPS6255306A JPS6255306A JP19383785A JP19383785A JPS6255306A JP S6255306 A JPS6255306 A JP S6255306A JP 19383785 A JP19383785 A JP 19383785A JP 19383785 A JP19383785 A JP 19383785A JP S6255306 A JPS6255306 A JP S6255306A
- Authority
- JP
- Japan
- Prior art keywords
- reinforced concrete
- flange
- bridge
- slab
- support member
- 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
Links
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は橋梁を構成する鉄筋コンクリート床版の撤去工
法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for removing reinforced concrete slabs constituting a bridge.
橋梁の一ツに主桁上に設けられたフランジにより鉄筋コ
ンクリート床版を支持した構造のものがある。One type of bridge has a structure in which a reinforced concrete slab is supported by flanges installed on the main girder.
ところで、この構造の橋梁において鉄筋コンクリート床
版に亀裂が生じる等により強度上危険となった場合は、
この鉄筋コンクリート床版を取替える必要がある。By the way, if the reinforced concrete deck of a bridge with this structure becomes dangerous due to cracks, etc.,
This reinforced concrete slab needs to be replaced.
従来、このような場合、主桁及びフランジを残して鉄筋
コンクリート床版をエアーガウジング又はコアブレーカ
等により撤去することが行なわれている。しかしこの工
法は騒音が激しく、騒音公害を来すばかりでなく、その
撤去作業には多大の時間と労力を必要としていた。Conventionally, in such cases, the reinforced concrete slab is removed by air gouging, core breaker, etc., leaving the main girder and flange intact. However, this construction method not only caused a lot of noise and caused noise pollution, but also required a great deal of time and effort to remove it.
このような事情で、第６図に示すように主桁１上に設け
られたフランジ２上において、鉄筋コンクリート床版３
をフランジ２の幅方向端部２′の内側において、ダイヤ
モンドカッター等の切断機で切断し、この切断された鉄
筋コンクリート床版３をクレーン等により吊り上げ撤去
する方法が提案されている。Under these circumstances, as shown in Figure 6, the reinforced concrete deck slab 3 is placed on the flange 2 provided on the main girder 1.
A method has been proposed in which the reinforced concrete slab 3 is cut inside the widthwise end 2' of the flange 2 using a cutting machine such as a diamond cutter, and the cut reinforced concrete slab 3 is lifted up and removed using a crane or the like.
この方法にも問題がある。即ち、切断機による切断線４
がフランジ２上にあるため、切断機がフランジ２に当り
、これが破損する恐れがある。また、必然的に切断され
た鉄筋コンクリート床版３とフランジ２間のコンクリー
ト付着力によりクレーンでの吊上げ能力を大としなけれ
ばならないこととなっている。更に、鉄筋コンク“リー
ト床版３は、その強度上からフランジ２上で厚みが大な
るように構成されているため、切断に多大の時間を必要
としていた。This method also has problems. That is, the cutting line 4 by the cutting machine
is on the flange 2, there is a risk that the cutting machine will hit the flange 2 and damage it. Furthermore, the lifting capacity of the crane must be increased due to the concrete adhesive force between the cut reinforced concrete floor slab 3 and the flange 2. Furthermore, since the reinforced concrete slab 3 is constructed so that its thickness is increased above the flange 2 due to its strength, it requires a large amount of time to cut.
本発明は前記したような従来の問題点を解決するために
なされたものであって、その目的とするところは、騒音
公害が少なく、かつ作業性の良好な橋梁鉄筋コンクリー
ト床版の撤去工法を提供せんとするものである。The present invention has been made in order to solve the conventional problems as described above, and its purpose is to provide a method for removing bridge reinforced concrete deck slabs that causes less noise pollution and has good workability. This is what I am trying to do.
・ 本発明は前記目的を達成するために、主桁上に設け
られたフランジにより鉄筋コンクリート床版を支持して
なる橋梁において、前記鉄筋コンクリート床版上のフラ
ンジの幅方向外側に支持部材の一端を取付けるとともに
、前記支持部材の他端を前記フランジ上の鉄筋コンクリ
ート床版上に当接するように配設し、前記支持部材の取
付位置とフランジ幅方向端部との間を切断するようにし
た橋梁鉄筋コンクリート床版の撤去工法である。- In order to achieve the above object, the present invention provides a bridge in which a reinforced concrete deck is supported by a flange provided on a main girder, in which one end of a support member is attached to the outside in the width direction of the flange on the reinforced concrete deck. and a bridge reinforced concrete floor, wherein the other end of the support member is arranged so as to come into contact with the reinforced concrete deck slab on the flange, and a cut is made between the mounting position of the support member and the end in the width direction of the flange. This is a method of removing plates.
以下、第１図ないし第５図に基づき本発明による橋梁鉄
筋コンクリート床版の撤去工法の一実施例を説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the bridge reinforced concrete deck removal method according to the present invention will be described below with reference to FIGS. 1 to 5.
第１図は鉄筋コンクリート床版１１を撤去中の橋梁１０
の一部斜視図、第２図は平面図、第３図は断面図、第４
図はフランジ上の鉄筋コンクリート床版１１′の撤去方
法の説明図、第５図は他の構造の橋梁の鉄筋コンクリー
ト床版の撤去方法の説明図である。Figure 1 shows a bridge 10 whose reinforced concrete slab 11 is being removed.
2 is a plan view, 3 is a sectional view, and 4 is a partial perspective view of
The figure is an explanatory diagram of a method for removing a reinforced concrete deck slab 11' on a flange, and FIG. 5 is an explanatory diagram of a method for removing a reinforced concrete deck slab of a bridge of another structure.
橋梁１０は、主桁１２上にジベル１３を有するフランジ
１４が取付けられ、このフランジ１４上に鉄筋コンクリ
ート床版１１とこの上に舗装置５が積層されて構成され
ている。The bridge 10 is constructed by having a flange 14 having a dowel 13 attached to the main girder 12, a reinforced concrete deck slab 11 on the flange 14, and a paving platform 5 stacked thereon.
このような構成の鉄筋コンクリート床版１１は第３図に
示されるように切断線１６を切断機で切断される。より
詳しくは、鉄筋コンクリート床版工１の上部であって、
かつフランジ１４の幅方向先端１４′より間隙Ｗを置い
て支持部材１７の一端１７′が固着される。この支持部
材１７は、逆り字形をなしており、他端１７“はフラン
ジ１４上の鉄筋コンクリート床版１１′上に当接する如
く配置されるとともに水平方向に回動自在になっている
。The reinforced concrete floor slab 11 having such a configuration is cut along a cutting line 16 using a cutting machine as shown in FIG. More specifically, the upper part of reinforced concrete floor slab work 1,
Further, one end 17' of the support member 17 is fixed with a gap W from the widthwise tip 14' of the flange 14. This support member 17 has an inverted shape, and the other end 17'' is arranged so as to abut on the reinforced concrete floor slab 11' on the flange 14, and is rotatable in the horizontal direction.
この支持部材１７は、フランジ１４の長手方向に適当間
隔を置いて複数個配置される。このように支持部材１７
の配置が終ると、この支持部材１７とフランジ１４の幅
方向先端１４′との間、即ち間隔Ｗ内に切断線１６が位
置するように切断する。A plurality of these support members 17 are arranged at appropriate intervals in the longitudinal direction of the flange 14. In this way, the support member 17
After the arrangement is completed, the cutting line 16 is cut so that the cutting line 16 is located between the support member 17 and the widthwise tip 14' of the flange 14, that is, within the interval W.
このとき、支持部材１７が障害となるときは、その一端
部１７“を水平方向に回動させればよい。At this time, if the support member 17 becomes an obstacle, one end portion 17'' thereof may be rotated in the horizontal direction.
このようにしてフランジ１４の長手方向の切断が終れば
、この鉄筋コンクリート床版１１をクレーン１９の吊り
上げ能力に応じて適当な幅となるように切断線２０で切
断しく第２図）、ブロック２工を形成する。この時、ブ
ロック２１は支持部材１７に支持されているので、下方
に落下することはない。After cutting the flange 14 in the longitudinal direction in this way, cut the reinforced concrete slab 11 along the cutting line 20 to an appropriate width depending on the lifting capacity of the crane 19 (Fig. 2). form. At this time, since the block 21 is supported by the support member 17, it will not fall downward.
ブロック２１は支持部材１７を利用して、クレーン１９
により吊り上げられ（第１図）、トラック２２へ搭載さ
れ、処理場へ輸送される。このようにして、各フランジ
１４間の鉄筋コンクリート床版１１が撤去されたのち、
フランジ１４上に残る鉄筋コンクリート床版１１′には
、第４図に示すように注入穴２３が設けられ、この注入
穴２３へ石灰等の膨張材を注入することによって、この
鉄筋コンクリート床版１１′は静的に破砕することがで
きるので容易に撤去することができる。 第５図は箱桁
橋の鉄筋コンクリート床版１１を撤去する場合であって
、第１実施例と同様な方法で撤去することができる。The block 21 uses the support member 17 to move the crane 19
(Fig. 1), loaded onto a truck 22, and transported to a processing plant. After the reinforced concrete slab 11 between each flange 14 is removed in this way,
The reinforced concrete slab 11' remaining on the flange 14 is provided with an injection hole 23 as shown in FIG. 4, and by injecting an expansive material such as lime into the injection hole 23, the reinforced concrete slab 11' is Since it can be statically crushed, it can be easily removed. FIG. 5 shows the case of removing the reinforced concrete deck slab 11 of a box girder bridge, which can be removed in the same manner as in the first embodiment.
以上の説明から明らかなように本発明は、主桁上に設け
られたフランジにより鉄筋コンクリート床版を支持して
なる橋梁において、前記鉄筋コンクリート床版上のフラ
ンジの幅方向外側に支持部材の一端を取付けるとともに
、前記支持部材の他端を前記フランジ上の鉄筋コンクリ
ート床版上に当接するように配設し、前記支持部材の取
付位置とフランジ幅方向端部との間を切断することを特
徴とするものであるので、次の如き効果を奏することが
できる。As is clear from the above description, the present invention provides a bridge in which a reinforced concrete deck is supported by a flange provided on a main girder, in which one end of a support member is attached to the outside in the width direction of the flange on the reinforced concrete deck. In addition, the other end of the support member is arranged so as to come into contact with a reinforced concrete deck slab on the flange, and a cut is made between the mounting position of the support member and the end in the width direction of the flange. Therefore, the following effects can be achieved.
本発明にかかる橋梁鉄筋コンクリート床版の撤去工法に
よれば、騒音の発生も少な（、しか゛も鉄筋コンクリー
ト床版の薄い部分であって、かつ鉄筋コンクリート床版
を支持しているフランジから外れた部分を切断するため
、切断作業を迅速に行なうことができ、加えて切断機や
フランジに損傷を与えることがないなどの効果を有する
。According to the bridge reinforced concrete deck removal method according to the present invention, less noise is generated (but it is also possible to remove the thin part of the reinforced concrete deck and the part that is detached from the flange supporting the reinforced concrete deck). Because it cuts, the cutting work can be done quickly, and it also has the advantage of not damaging the cutting machine or the flange.
また、鉄筋コンクリート床版の切断に先立って支持部材
を配置した後、切断作業を行うために極めて作業が安全
であり、この切断作業中にクレーン等の邪魔な装置を近
づけることがなく、作業を円滑に行うことができる。In addition, the work is extremely safe because the cutting work is carried out after placing the support members before cutting the reinforced concrete slab, and the work is carried out smoothly without bringing any obstructive equipment such as a crane close during the cutting work. can be done.
第１図ないし第５図は、本発明による鉄筋コンクリート
床版の撤去工法の実施例を示すものであって、第１図は
鉄筋コンクリート床版を撤去中の橋梁の一部斜視図、第
２図は平面図、第３図は断面図、第４図はフランジ上の
鉄筋コンクリート床版の撤去説明図、第５図は他の構造
の橋梁の鉄筋コンクリート床版の撤去工法説明図、第６
図は従来例の説明図である。
■、１２・・・主桁、２，１４・・・フランジ、３，１
１・・・鉄筋コンクリート床版、４．１６．２０・・・
切断線、１０・・・ｍ梁、１３・・・ジベル、１５・・
・アスファルト、１７・・・支持部材、１９・・・クレ
ーン、２１・・・ブロック、２２・・・トラック、２３
・・・注入穴。Figures 1 to 5 show an embodiment of the reinforced concrete deck removal method according to the present invention, in which Figure 1 is a partial perspective view of a bridge during which the reinforced concrete slab is being removed, and Figure 2 is Plan view, Figure 3 is a sectional view, Figure 4 is an explanatory diagram for removing the reinforced concrete slab on the flange, Figure 5 is an explanatory diagram of the method of removing reinforced concrete slabs from bridges with other structures, and Figure 6
The figure is an explanatory diagram of a conventional example. ■, 12... Main girder, 2, 14... Flange, 3, 1
1...Reinforced concrete floor slab, 4.16.20...
Cutting line, 10...m beam, 13...jibel, 15...
- Asphalt, 17... Supporting member, 19... Crane, 21... Block, 22... Truck, 23
...Injection hole.
Claims (1)
版を支持してなる橋梁において、前記鉄筋コンクリート
床版上のフランジの幅方向外側に支持部材の一端を取付
けるとともに、前記支持部材の他端を前記フランジ上の
鉄筋コンクリート床版上に当接するように配設し、前記
支持部材の取付位置とフランジ幅方向端部との間を切断
することを特徴とする橋梁鉄筋コンクリート床版の撒去
工法。In a bridge in which a reinforced concrete deck is supported by a flange provided on a main girder, one end of the support member is attached to the outside in the width direction of the flange on the reinforced concrete deck, and the other end of the support member is attached to the outside of the flange on the reinforced concrete deck. A method for removing a bridge reinforced concrete deck, characterized in that the supporting member is disposed so as to be in contact with the reinforced concrete deck slab, and the support member is cut between the mounting position and the end in the width direction of the flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19383785A JPS6255306A (en) | 1985-09-04 | 1985-09-04 | Method for withdrawing reinforced concrete floor panel of bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19383785A JPS6255306A (en) | 1985-09-04 | 1985-09-04 | Method for withdrawing reinforced concrete floor panel of bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6255306A true JPS6255306A (en) | 1987-03-11 |
| JPH039962B2 JPH039962B2 (en) | 1991-02-12 |
Family
ID=16314561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19383785A Granted JPS6255306A (en) | 1985-09-04 | 1985-09-04 | Method for withdrawing reinforced concrete floor panel of bridge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6255306A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4875775B1 (en) * | 2011-03-29 | 2012-02-15 | 黒沢建設株式会社 | Removal method of bridge deck |
| JP2016121458A (en) * | 2014-12-24 | 2016-07-07 | カヤク・ジャパン株式会社 | Removal method of composite beam concrete |
| JP2017061805A (en) * | 2015-09-25 | 2017-03-30 | 三同建設株式会社 | Structure bearing member and structure demolition method using the same |
| JP2017141573A (en) * | 2016-02-09 | 2017-08-17 | 日本橋梁株式会社 | Solid splitting dismantling method using expansion tube and dismantling removal method of reinforced concrete slab of bridge |
| JP2018091062A (en) * | 2016-12-05 | 2018-06-14 | 鹿島建設株式会社 | Concrete floor slab removal method and concrete floor slab construction method |
| JP2019090221A (en) * | 2017-11-14 | 2019-06-13 | 日本橋梁株式会社 | Composite girder removal method |
| JP2020133161A (en) * | 2019-02-15 | 2020-08-31 | 鹿島建設株式会社 | Retainer and slab demolition method |
| KR20220118769A (en) * | 2021-02-19 | 2022-08-26 | 넥센타이어 주식회사 | Tire |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6143071B2 (en) * | 2013-04-03 | 2017-06-07 | 清水建設株式会社 | Building demolition method |
-
1985
- 1985-09-04 JP JP19383785A patent/JPS6255306A/en active Granted
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4875775B1 (en) * | 2011-03-29 | 2012-02-15 | 黒沢建設株式会社 | Removal method of bridge deck |
| JP2016121458A (en) * | 2014-12-24 | 2016-07-07 | カヤク・ジャパン株式会社 | Removal method of composite beam concrete |
| JP2017061805A (en) * | 2015-09-25 | 2017-03-30 | 三同建設株式会社 | Structure bearing member and structure demolition method using the same |
| JP2017141573A (en) * | 2016-02-09 | 2017-08-17 | 日本橋梁株式会社 | Solid splitting dismantling method using expansion tube and dismantling removal method of reinforced concrete slab of bridge |
| JP2018091062A (en) * | 2016-12-05 | 2018-06-14 | 鹿島建設株式会社 | Concrete floor slab removal method and concrete floor slab construction method |
| JP2019090221A (en) * | 2017-11-14 | 2019-06-13 | 日本橋梁株式会社 | Composite girder removal method |
| JP2020133161A (en) * | 2019-02-15 | 2020-08-31 | 鹿島建設株式会社 | Retainer and slab demolition method |
| KR20220118769A (en) * | 2021-02-19 | 2022-08-26 | 넥센타이어 주식회사 | Tire |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH039962B2 (en) | 1991-02-12 |
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