JPS6245804A - Re-covering of bridge reinforced concrete - Google Patents
Re-covering of bridge reinforced concreteInfo
- Publication number
- JPS6245804A JPS6245804A JP18508385A JP18508385A JPS6245804A JP S6245804 A JPS6245804 A JP S6245804A JP 18508385 A JP18508385 A JP 18508385A JP 18508385 A JP18508385 A JP 18508385A JP S6245804 A JPS6245804 A JP S6245804A
- Authority
- JP
- Japan
- Prior art keywords
- reinforced concrete
- flange
- slab
- concrete block
- new
- 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、補修が必要となった橋梁鉄筋コンクリート床
版の張替え工法、特に剪断力の大きくない橋梁の中央部
に採用して好適な橋梁鉄筋コンクリート床版の張替え工
法に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for replacing bridge reinforced concrete deck slabs that require repair, and a bridge reinforced concrete method that is particularly suitable for use in the central part of a bridge where shearing force is not large. This relates to the method of replacing floor slabs.
［従来の技術］
橋梁鉄筋コンクリート床版が老朽化して亀裂が生じる等
により強度上の危険が考えられる場合には、鉄筋コンク
リート床版の張替えを行う必要がある。[Prior Art] When the reinforced concrete deck slab of a bridge becomes old and cracks appear, which poses a danger to its strength, it is necessary to replace the reinforced concrete deck slab.
従来、こうした張替えの必要が生じた場合は、第７図に
示す如く主桁ａのフランジａ′上にジベルｂを介して一
体に固定され且つ上面にアスファルトＣを施設された鉄
筋コンクリート床版ｄにおいて、第８図に示すように、
前記主桁ａのみを残した状態でエアーガウジング或いは
コアブレーカにより鉄筋コンクリート床版ｄを解体除去
する。この際、主桁ａのフランジａ′上部はジベルｂに
よる複雑な構造を有しておりコンクリートのみを破砕し
て除去するのは困難なため、ジベルｂごと切断して除去
するようにしている。Conventionally, when the need for such resurfacing arose, the reinforced concrete slab d, which was integrally fixed onto the flange a' of the main girder a via dowels b and covered with asphalt C on the upper surface, was used as shown in Figure 7. , as shown in Figure 8,
The reinforced concrete slab d is dismantled and removed using air gouging or a core breaker, leaving only the main girder a. At this time, the upper part of the flange a' of the main girder a has a complicated structure with the dowel b, and it is difficult to crush and remove only the concrete, so the dowel b is cut and removed together.
続いて、第８図における主桁ａのフランジａ′上に、ジ
ベルｂ′を新たに固ｉｆると共に、従来の鉄筋コンクリ
ート橋梁の￥Ｊｌ設と同様に配筋し型枠を組んでコンク
リートを打設することにより第９図に示すように新たな
鉄筋コンクリート床版ｄ′を形成し、その上面にアスフ
ァルトＣ′を施設するようにしている。Next, a new dowel b' was fixed on the flange a' of the main girder a in Fig. 8, and reinforcement was placed, formwork was constructed, and concrete was poured in the same way as in the construction of conventional reinforced concrete bridges. As a result, a new reinforced concrete floor slab d' is formed as shown in FIG. 9, and asphalt C' is laid on its upper surface.
［発明が解決しようとする問題点］
しかし、前記従来方式においては、鉄筋コンクリート床
版ｄの解体に多大の手数８要し、１ｈに主桁ａのフラン
ジａ’−１一部の解体は困テ１［であり、解体作業に時
間がかかる問題を要づ゛る。また解体後に新たな鉄筋コ
ンクリート床版１」′を構成する際にも、配筋、型枠の
設置、足場の建設等多大の現場作業が生じて作業に時間
がかかる問題がある。このように鉄筋コンクリート床版
の張替えに長時間を要することは、その間交通を遮断し
てしまうことになるので、近年の交通事情から単質な問
題となっている。[Problems to be Solved by the Invention] However, in the conventional method, it takes a great deal of time to dismantle the reinforced concrete slab d, and it is difficult to dismantle part of the flange a'-1 of the main girder a in 1h. 1, which poses a problem in which demolition work takes time. Furthermore, when constructing a new reinforced concrete floor slab 1'' after demolition, there is a problem that a large amount of on-site work such as reinforcing reinforcement, installation of formwork, and construction of scaffolding is required, which takes time. The fact that it takes a long time to replace reinforced concrete slabs in this way means that traffic is blocked during that time, which has become a simple problem due to recent traffic conditions.
本発明は、こうした実情に鑑みてなしたものである。The present invention has been made in view of these circumstances.
［問題点を解決するための手段］
本発明は、補修を要する鉄筋コンクリート床版を、主桁
のフランジ幅端部に沿い切断撤去して前記フランジ上に
コンクリートブロックを残し、更に該コンクリートブロ
ックを部分的に切断除去してフランジ上に新床版用接合
空間を形成し、しかる後前記コンクリートブロック上に
新床版を載置して、該新床版に固設しておいた接合板を
前記接合空間内に嵌入し、該接合空間位置にて前記接合
板とフランジとをボルトによって接合するものである。[Means for Solving the Problems] The present invention involves cutting and removing a reinforced concrete slab that requires repair along the width end of the flange of the main girder, leaving a concrete block on the flange, and then partially removing the concrete block. A joint space for the new deck slab is formed on the flange by cutting and removing the concrete block, and then the new deck slab is placed on the concrete block, and the joint plate fixed to the new deck is attached to the concrete block. The joint plate is inserted into the joint space, and the joint plate and the flange are joined with bolts at the position of the joint space.
［作 用］
従って、現場作業を著しく減少させて、短時間にて張替
え工事が行われる。[Function] Therefore, the on-site work is significantly reduced and the re-covering work can be carried out in a short time.
［実 施 例１ 以下、図面を参照して本発明の実施例を説明する。[Implementation Example 1] Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明を適用する補修が必要となった鉄筋コン
クリート橋梁の一例を示すもので、図中１は主桁、１′
はフランジ、２は鉄筋コンクリート床版、３はジベル、
４はアスファルトを示す。Figure 1 shows an example of a reinforced concrete bridge that required repair to which the present invention is applied; 1 in the figure is the main girder, 1'
is a flange, 2 is a reinforced concrete slab, 3 is a dowel,
4 indicates asphalt.
斯かる構成において、鉄筋コンクリート床版２の張替え
を行うに当り、先ず主桁１のフランジ１′の長手方向に
沿い、且つフランジ１′の両幅端部位置において鉄筋コ
ンクリート床版２を垂直にダイヤモンドカッタ等によっ
て切断しく切断線５）、鉄筋コンクリート床版２を撤去
してフランジ１′上にコンクリートブロック６を残した
状態としく第２図参照〉、更に該コンクリートブロック
６の適宜位置を部分的に切断して（切断線７）ジベル３
と共に除去し、新床版用の接合空間８を形成する。そう
して、コンクリートブロック６上のアスファルト４を除
去する。In such a configuration, when replacing the reinforced concrete slab 2, first cut the reinforced concrete slab 2 vertically with a diamond cutter along the longitudinal direction of the flange 1' of the main girder 1 and at both width end positions of the flange 1'. Cut along the cutting line 5), remove the reinforced concrete slab 2 and leave the concrete block 6 on the flange 1' (see Figure 2), and then partially cut the concrete block 6 at an appropriate position. (cutting line 7) Jibel 3
The joint space 8 for the new floor slab is formed. Then, the asphalt 4 on the concrete block 6 is removed.
尚１０は接合空間に位置するフランジ１′に穿設したボ
ルト孔である。Note that 10 is a bolt hole drilled in the flange 1' located in the joining space.
続いて、第３図及び第４図に示すように、予め工場など
において製作された鋼床版からなる新床版９を、前記フ
ランジ１′上のコンクリートブロック６上に載置する。Subsequently, as shown in FIGS. 3 and 4, a new floor slab 9 made of a steel deck previously manufactured at a factory or the like is placed on the concrete block 6 on the flange 1'.
新床版９は、前記コンクリートブロック６の側面に近設
してフンクリートブロック６に対する幅方向位置を規制
するようにしだ幅端鋼板１１と、前記接合空間８に嵌入
してコンクリートブロック６に対する長手方向位置を規
制するよう、幅端鋼板１１間の下部所要位置に固設した
接合板１２とを備え、更に該接合板１２にはフランジ１
′の前記ボルト孔１０と対応してボルト孔１３が穿設さ
れている。尚１６は補強用のりトラフである。従って、
新床版９をコンクリートブロック６上に代置する際に、
第５図に示すに′うに幅端１閃板１１にてコンクリート
ブロック６を挟持するよう、しかも第６図に示すように
接合板１２が接合空間８に嵌入するよう位置調整し、而
して、接合板１２をフランジ１′に対し前記ボルト孔１
０．１２を利用して高張力ホルト１４により接合する。The new floor slab 9 is fitted with a width edge steel plate 11 that is disposed close to the side surface of the concrete block 6 to regulate its widthwise position relative to the concrete block 6, and a width end steel plate 11 that is fitted into the joint space 8 and extends longitudinally relative to the concrete block 6. In order to regulate the directional position, the joint plate 12 is provided with a joint plate 12 fixed at a predetermined position at the lower part between the width end steel plates 11, and the joint plate 12 is further provided with a flange 1.
A bolt hole 13 is bored corresponding to the bolt hole 10 of '. Note that 16 is a reinforcing glue trough. Therefore,
When replacing the new floor slab 9 on the concrete block 6,
Adjust the position so that the concrete block 6 is held between the width end 1 flashing plates 11 as shown in FIG. 5, and the joint plate 12 fits into the joint space 8 as shown in FIG. , connect the joint plate 12 to the flange 1' through the bolt hole 1
0.12 and are joined by a high tension bolt 14.
しかる後、新床版９の上面にアスファルト１５等を施ず
。After that, asphalt 15 etc. was not applied to the upper surface of the new floor slab 9.
前記実施例においては、補修を要する鉄筋コンクリート
床版２を切断して除去するようにしており、しかも解体
が困難／よフランジ１′上部を部分的に除去して他の部
分をコンクリートブロツク６としてそのまま残すように
しているので、除去作業を容易且つ短時間に行うことが
できる。In the embodiment described above, the reinforced concrete slab 2 that requires repair is cut and removed, and it is difficult to dismantle it.The upper part of the flange 1' is partially removed and the other part is left as it is as a concrete block 6. Since it is left in place, the removal work can be done easily and in a short time.
更に、新床版９は予め工場等で製作しておくことができ
るので、前記鉄筋コンクリート床版２を除去した後、直
ちに載置、固定することができ、よって張替え作業全体
の工期を著しく短縮することができる。また、複数の主
桁１が並設される広い幅の橋梁においては、一部の主桁
１゜１間の鉄筋コンクリート床版２の張替えを行っても
、他の部分の強度は損われないので、車輌等の通行或い
（は張替え作業を行うための運搬作業等に利用プること
ができる。Furthermore, since the new floor slab 9 can be manufactured in advance at a factory or the like, it can be placed and fixed immediately after the reinforced concrete floor slab 2 is removed, thereby significantly shortening the construction period for the entire re-laying work. be able to. In addition, in a wide bridge where multiple main girders 1 are installed side by side, even if the reinforced concrete slab 2 between some of the main girders 1 is replaced, the strength of other parts will not be impaired. It can be used for transportation of vehicles, etc. (or for transportation work to perform reupholstery work, etc.).
尚、本発明は前記実施例にのみ限定されるものではなく
、新床版の形状溝道は種々変更し得ること、その池水発
明の要旨を逸脱しない範囲内において種々変更を加え得
ること、等は勿論である。It should be noted that the present invention is not limited to the above-mentioned embodiments, and that the shape and groove of the new floor slab can be changed in various ways, and that various changes can be made within the scope of the invention without departing from the gist of the pond water invention. Of course.
［発明の効果１
上述した本発明のｔｉｔ銖筋コンクリート床版の張替え
工法によれば、次のような優れた効果を奏し得る。[Effect of the Invention 1] According to the above-mentioned method for re-covering a tit reinforcement concrete slab of the present invention, the following excellent effects can be achieved.
（ｉ） 張替え作業を急速、短時間に行うことができ
、よって張替工事に伴なう交通障害の発生を最小限に止
めることができる。(i) Re-upholstery work can be carried out quickly and in a short period of time, and traffic disturbances caused by re-upholstery work can therefore be minimized.
（ｔｉ） 補修を要する鉄筋コンクリート床版を切断
により除去するようにしているので、従来のような衝撃
的なｒ！Ａ音公害を生じることがない。(ti) Reinforced concrete slabs that require repair are removed by cutting, so there is no need for shocking r! A: No sound pollution occurs.
（ロ）新床版を鋼製床版とすることにより、橋梁の強度
向上を容易に可能にすることができる。(b) By using a steel deck as the new deck, it is possible to easily improve the strength of the bridge.
００ 現場作業を著しく減少ざＵて工費の低減を図り
得る。00 It is possible to reduce construction costs by significantly reducing on-site work.
第１図は本発明を適用した補修を要する橋梁の部分図、
第２図は第１図の状態から鉄筋コンクリート床版を切断
除去した状態を示す説明図、第３図は新床版の説明図、
第４図は本発明の工法によって床版を張替えた状態の説
明図、第５図は第４図のｖ−ｖ矢視図、第６図は第４図
のＶｌ −Ｖｌ矢視図、第７図〜第９図は従来の橋梁鉄
筋コンクリ−１〜床版の張替え工法を手順を追って示し
た説明図である。
１は主桁、１′はフランジ、２は鉄筋コンクリート床版
、３はジベル、５，７は切断線、６は］ンクリートブロ
ック、８接合空間、９は新床版、１１は幅端鋼板、１２
は接合板、１４は高張力ボルトを示Ｖ。Figure 1 is a partial view of a bridge that requires repair to which the present invention is applied;
Figure 2 is an explanatory diagram showing the state in which the reinforced concrete slab has been cut and removed from the state shown in Figure 1, Figure 3 is an explanatory diagram of the new slab;
Fig. 4 is an explanatory diagram of a state in which the floor slab has been replaced by the construction method of the present invention, Fig. 5 is a view taken along the v-v arrow in Fig. 4, and Fig. 6 is a view taken along the Vl-Vl arrow in Fig. 4. FIGS. 7 to 9 are explanatory diagrams showing the conventional bridge reinforced concrete 1 to deck resurfacing method step by step. 1 is the main girder, 1' is the flange, 2 is the reinforced concrete slab, 3 is the dowel, 5 and 7 are the cutting lines, 6 is the concrete block, 8 is the joint space, 9 is the new slab, 11 is the width end steel plate, 12
14 indicates a joint plate, and 14 indicates a high-tensile bolt.
Claims (1)
ンジ幅端部に沿い切断撤去して前記フランジ上にコンク
リートブロックを残し、更に該コンクリートブロックを
部分的に切断除去してフランジ上に新床版用接合空間を
形成し、しかる後前記コンクリートブロック上に新床版
を載置して、該新床版に固設しておいた接合板を前記接
合空間内に嵌入し、該接合空間位置にて前記接合板とフ
ランジとをボルトによって接合することを特徴とする橋
梁鉄筋コンクリート床版の張替え工法。1) Cut and remove the reinforced concrete deck slab that requires repair along the width edge of the flange of the main girder, leaving a concrete block on the flange, and then partially cut and remove the concrete block and install the new deck slab on the flange. After that, a new floor slab is placed on the concrete block, and the joint plate fixed to the new floor slab is inserted into the joint space and placed in the joint space position. A method for recladding a bridge reinforced concrete deck, characterized in that the joining plate and the flange are joined with bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60185083A JPH0651961B2 (en) | 1985-08-23 | 1985-08-23 | Bridge rebar concrete floor slab replacement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60185083A JPH0651961B2 (en) | 1985-08-23 | 1985-08-23 | Bridge rebar concrete floor slab replacement method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6245804A true JPS6245804A (en) | 1987-02-27 |
| JPH0651961B2 JPH0651961B2 (en) | 1994-07-06 |
Family
ID=16164524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60185083A Expired - Lifetime JPH0651961B2 (en) | 1985-08-23 | 1985-08-23 | Bridge rebar concrete floor slab replacement method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0651961B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5878657B1 (en) * | 2015-03-31 | 2016-03-08 | 三井造船株式会社 | Bridge slab support structure and floor slab replacement method |
| JP2017122353A (en) * | 2016-01-08 | 2017-07-13 | Ｊｆｅスチール株式会社 | Replacement method of concrete slab and replacement structure |
| JP2017128841A (en) * | 2016-01-18 | 2017-07-27 | Ｊｆｅスチール株式会社 | Replacement construction method of concrete slab |
| JP2019002239A (en) * | 2017-06-19 | 2019-01-10 | オリエンタル白石株式会社 | Removal method for floor slab |
| JP2019090221A (en) * | 2017-11-14 | 2019-06-13 | 日本橋梁株式会社 | Composite girder removal method |
| JP2023161604A (en) * | 2022-04-26 | 2023-11-08 | 三井住友建設鉄構エンジニアリング株式会社 | Floor slab replacement method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6059209A (en) * | 1983-09-08 | 1985-04-05 | 石川島播磨重工業株式会社 | Replacing method of bridge reinforced concrete floor panel |
-
1985
- 1985-08-23 JP JP60185083A patent/JPH0651961B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6059209A (en) * | 1983-09-08 | 1985-04-05 | 石川島播磨重工業株式会社 | Replacing method of bridge reinforced concrete floor panel |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5878657B1 (en) * | 2015-03-31 | 2016-03-08 | 三井造船株式会社 | Bridge slab support structure and floor slab replacement method |
| JP2016194215A (en) * | 2015-03-31 | 2016-11-17 | 三井造船株式会社 | Bridge deck slab support structure and replacement method of deck slab |
| JP2017122353A (en) * | 2016-01-08 | 2017-07-13 | Ｊｆｅスチール株式会社 | Replacement method of concrete slab and replacement structure |
| JP2017128841A (en) * | 2016-01-18 | 2017-07-27 | Ｊｆｅスチール株式会社 | Replacement construction method of concrete slab |
| JP2019002239A (en) * | 2017-06-19 | 2019-01-10 | オリエンタル白石株式会社 | Removal method for floor slab |
| JP2019090221A (en) * | 2017-11-14 | 2019-06-13 | 日本橋梁株式会社 | Composite girder removal method |
| JP2023161604A (en) * | 2022-04-26 | 2023-11-08 | 三井住友建設鉄構エンジニアリング株式会社 | Floor slab replacement method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0651961B2 (en) | 1994-07-06 |
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