JPH08218324A - Bonding method of concrete surface and steel girder - Google Patents
Bonding method of concrete surface and steel girderInfo
- Publication number
- JPH08218324A JPH08218324A JP2793695A JP2793695A JPH08218324A JP H08218324 A JPH08218324 A JP H08218324A JP 2793695 A JP2793695 A JP 2793695A JP 2793695 A JP2793695 A JP 2793695A JP H08218324 A JPH08218324 A JP H08218324A
- Authority
- JP
- Japan
- Prior art keywords
- steel girder
- grooved
- steel
- girder
- floor slab
- 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]
【産業上の利用分野】本発明は、既設のコンクリート床
版に鋼桁を増設する場合などに適用されるコンクリート
面と鋼桁との接着方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for adhering a concrete surface to a steel girder which is applied when a steel girder is added to an existing concrete floor slab.
【０００２】[0002]
【従来の技術】図２は既設のコンクリート床版に鋼桁を
増設する場合などに使用されている従来のコンクリート
面と鋼桁との接着工法の説明図である。図において、従
来は鋼桁の増設による補強工事などにおいて既設のコン
クリート床版５に鋼桁６の上フランジ２を接着して鋼桁
６を増設する場合は、ブラスト処理した既設のコンクリ
ート床版５の裏面１と増設する鋼桁６の上フランジ２の
上面との隙間にエポキシ樹脂などの接着剤４を注入して
接着している。図における符号３は接着剤４の注入漏れ
を防ぐシール材である。2. Description of the Related Art FIG. 2 is an explanatory view of a conventional method for adhering a concrete surface to a steel girder, which is used when a steel girder is added to an existing concrete slab. In the figure, when the steel girder 6 is added by adhering the upper flange 2 of the steel girder 6 to the existing concrete floor slab 5 in the conventional reinforcement work such as the addition of steel girders, the blasted existing concrete floor slab 5 is used. An adhesive 4 such as an epoxy resin is injected into the gap between the rear surface 1 of the above and the upper surface of the upper flange 2 of the steel girder 6 to be added and bonded. Reference numeral 3 in the drawing is a sealing material that prevents the adhesive 4 from leaking.
【０００３】[0003]
【発明が解決しようとする課題】上記のような従来のコ
ンクリート面と鋼桁との接着工法においては、既設のコ
ンクリート床版５と増設する鋼桁６の上フランジ２との
合成化が十分とは言えず、横桁部に生じる接着剤４の切
れ目７にせん断応力の集中が見られ、接着剤４の切れ目
７でコンクリート床版５と増設する鋼桁６との間にずれ
を生じ易い。In the conventional bonding method of the concrete surface and the steel girder as described above, it is sufficient to combine the existing concrete floor slab 5 and the upper flange 2 of the steel girder 6 to be added. However, concentration of shear stress is observed at the cut 7 of the adhesive 4 generated in the transverse girder portion, and a gap between the concrete floor slab 5 and the steel girder 6 to be added is likely to occur at the cut 7 of the adhesive 4.
【０００４】[0004]
【課題を解決するための手段】本発明に係るコンクリー
ト面と鋼桁との接着方法は上記課題の解決を目的にして
おり、鋼桁のフランジに溝付き鋼板を使用し、上記溝付
き鋼板の溝を有する面とコンクリート面との間に接着剤
を注入し、上記溝付き鋼板の端部をアンカーにより上記
コンクリート面に締結することを特徴とする。The method for adhering a concrete surface to a steel girder according to the present invention is intended to solve the above-mentioned problems. A grooved steel plate is used for the flange of the steel girder, and An adhesive is injected between the grooved surface and the concrete surface, and the ends of the grooved steel plates are fastened to the concrete surface with anchors.
【０００５】[0005]
【作用】即ち、本発明に係るコンクリート面と鋼桁との
接着方法においては、鋼桁のフランジに溝付き鋼板を使
用して溝付き鋼板の溝を有する面とコンクリート面との
間に接着剤を注入するとともに溝付き鋼板の端部をアン
カーによりコンクリート面に締結するようになってお
り、鋼桁のフランジを溝付きにすることによりずれ止め
の効果を高めるとともにせん断応力の集中する接着剤の
切れ目付近となる溝付き鋼板の端部にアンカーを埋め込
むことにより既設のコンクリート面に鋼桁を増設する場
合でもコンクリート面と鋼桁のフランジとの合成化をよ
り一層確実なものにすることができる。That is, in the method of adhering a concrete surface to a steel girder according to the present invention, a grooved steel plate is used for the flange of the steel girder, and an adhesive is applied between the grooved surface of the grooved steel plate and the concrete surface. The end of the grooved steel plate is fastened to the concrete surface with an anchor, and the flange of the steel girder is grooved to enhance the effect of preventing slippage and to reduce the adhesive stress that concentrates shear stress. Even if a steel girder is added to the existing concrete surface by embedding an anchor at the end of the grooved steel plate near the break, it is possible to further ensure the compounding of the concrete surface and the steel girder flange. .
【０００６】[0006]
【実施例】図１は本発明の一実施例に係るコンクリート
面と鋼桁との接着工法の説明図である。図において、本
実施例に係るコンクリート面と鋼桁との接着工法は既設
のコンクリート床版に鋼桁を増設する場合などに使用さ
れるもので、増設する鋼桁６の上フランジとして溝付き
鋼板１０を使用するとともに、最もせん断応力が集中す
る接着剤４の切れ目付近においては、溝付き鋼板１０の
端部に予め穴を穿けておき、既設のコンクリート床版５
の裏面１に打ち込んだ樹脂アンカー９をその穴に通して
ナット１３を締めた後、そのナット１３を溝付き鋼板１
０に溶接して固定することにより、既設のコンクリート
床版５と増設する鋼桁６の上フランジとの確固たる合成
化を図っている。FIG. 1 is an explanatory view of a method of bonding a concrete surface and a steel girder according to an embodiment of the present invention. In the figure, the method for adhering a concrete surface to a steel girder according to the present embodiment is used when a steel girder is added to an existing concrete floor slab, and a grooved steel plate is used as the upper flange of the added steel girder 6. 10 is used, and in the vicinity of the break of the adhesive 4 where the shear stress is most concentrated, a hole is preliminarily drilled at the end of the grooved steel plate 10 and the existing concrete floor slab 5 is used.
After passing the resin anchor 9 driven into the back surface 1 of the through the hole and tightening the nut 13, the nut 13 is attached to the grooved steel plate 1
By welding and fixing to 0, the existing concrete floor slab 5 and the upper flange of the steel girder 6 to be added are firmly combined.
【０００７】即ち、既設のコンクリート床版５と増設の
鋼桁６の溝付き鋼板１０による上フランジとを接着する
場合は、図に示すように先ずコンクリート床版５に後に
樹脂アンカー９を埋め込んで樹脂により固定するための
穴を設ける。また、コンクリート床版５の裏面１はブラ
スト処理などの表面処理を施す。また、増設する鋼桁６
の上フランジである溝付き鋼板１０の端部に樹脂アンカ
ー９を通す穴を穿けておく。この穴に樹脂アンカー９を
通してナット１３で締める。そして、このナット１３を
溝付き鋼板１０に溶接１４する。その後、コンクリート
床版５と溝付き鋼板１０の溝付き面との間に接着剤４を
注入する。このとき、接着剤４の注入漏れを防ぐために
シール材３を使用する。That is, when the existing concrete floor slab 5 and the upper flange made of the grooved steel plate 10 of the additional steel girder 6 are bonded, first, as shown in the figure, the resin anchor 9 is embedded later in the concrete floor slab 5. Provide a hole for fixing with resin. The back surface 1 of the concrete floor slab 5 is subjected to surface treatment such as blast treatment. In addition, steel girder 6 to be added
A hole for inserting the resin anchor 9 is made in the end of the grooved steel plate 10 which is the upper flange. The resin anchor 9 is passed through this hole and the nut 13 is tightened. Then, the nut 13 is welded 14 to the grooved steel plate 10. After that, the adhesive 4 is injected between the concrete floor slab 5 and the grooved surface of the grooved steel plate 10. At this time, the sealing material 3 is used to prevent the adhesive 4 from leaking.
【０００８】鋼桁６を合成により施工する場合には、コ
ンクリート床版５と鋼桁６の上フランジとを合成するた
めに鋼桁６の上フランジの上面に多数のスタッドジベル
を配置する。新設工事の場合にはコンクリート床版５を
後打ちするので、このようなスタッドジベルの埋め込み
が可能であるが、補修工事などの場合には既設のコンク
リート床版５に無数の穴を設けることは不可能であるた
め、せん断応力に耐え得る接着剤４を用いて接着する。
この場合、接着剤４と鋼桁６との界面などでは十分な接
着効果が発揮されないため、本工法では鋼桁６の上フラ
ンジを溝付き鋼板１０にすることによりずれ止め効果を
高めるとともに、せん断応力の集中する接着剤４の切れ
目付近にのみ樹脂アンカー９を埋め込むことにより既設
のコンクリート床版５と増設の鋼桁６との合成化をより
一層確実なものにすることができる。When the steel girder 6 is constructed by synthesizing, a large number of stud dowels are arranged on the upper surface of the upper flange of the steel girder 6 in order to synthesize the concrete floor slab 5 and the upper flange of the steel girder 6. In the case of new construction, the concrete slab 5 is post-cast, so it is possible to embed such a stud dowel. However, in the case of repair work etc., it is not necessary to provide an innumerable number of holes in the existing concrete slab 5. Since it is impossible, the adhesive 4 which can withstand the shear stress is used for the adhesion.
In this case, since a sufficient adhesive effect is not exerted at the interface between the adhesive 4 and the steel girder 6, in this construction method, the upper flange of the steel girder 6 is made into the grooved steel plate 10 to enhance the slip-prevention effect and to prevent shearing. By embedding the resin anchor 9 only in the vicinity of the break of the adhesive 4 where the stress is concentrated, the composition of the existing concrete floor slab 5 and the additional steel girder 6 can be made more reliable.
【０００９】従来のコンクリート面と鋼桁との接着工法
においては、既設のコンクリート床版と増設する鋼桁の
上フランジとの合成化が十分とは言えず、横桁部に生じ
る接着剤の切れ目にせん断応力の集中が見られ、接着剤
の切れ目でコンクリート床版と増設する鋼桁との間にず
れを生じ易いが、本コンクリート面と鋼桁との接着工法
においては鋼桁６の増設を行う際に、既設のコンクリー
ト床版５の裏面１と増設する鋼桁６の上フランジの上面
とをより一層強固に合成化を可能にするため、鋼桁６の
上フランジに溝付き鋼板１０を使用するとともに樹脂ア
ンカー９によりずれ止めを施工するようになっており、
既設のコンクリート床版５と増設する鋼桁６とのより一
層強固な合成化が可能になり、既設のコンクリート床版
５に橋梁などの鋼桁６を増設して補強を行う際に、増設
する鋼桁６の断面剛性だけでなく既設のコンクリート床
版５の断面剛性をも合成により強化することができるこ
とにより増設する鋼桁６の断面を小さくすることがで
き、コストの低減化にも継がる。In the conventional method for adhering the concrete surface to the steel girder, the combination of the existing concrete floor slab and the upper flange of the steel girder to be added cannot be said to be sufficient. Concentration of shear stress is observed in the concrete, and a gap between the concrete floor slab and the steel girder to be added is likely to occur due to a break in the adhesive. When carrying out, in order to make it possible to more firmly synthesize the rear surface 1 of the existing concrete floor slab 5 and the upper surface of the upper flange of the steel girder 6 to be added, the grooved steel plate 10 is formed on the upper flange of the steel girder 6. It is designed to be used together with a resin anchor 9 to prevent slippage.
The existing concrete floor slab 5 and the steel girder 6 to be added can be further strengthened, and can be added when the steel girder 6 such as a bridge is added to the existing concrete floor slab 5 for reinforcement. Not only the cross-sectional rigidity of the steel girder 6 but also the cross-sectional rigidity of the existing concrete floor slab 5 can be strengthened by synthesis, so that the cross section of the steel girder 6 to be added can be made smaller, which leads to cost reduction. .
【００１０】[0010]
【発明の効果】本発明に係るコンクリート面と鋼桁との
接着方法は前記のようになっており、コンクリート面と
鋼桁のフランジとの合成化を確実なものにすることがで
きるので、コンクリート面と鋼桁との間にずれを生じ難
くなる。The method for adhering the concrete surface and the steel girder according to the present invention is as described above, and since the compounding of the concrete surface and the flange of the steel girder can be ensured, the concrete It becomes difficult to cause a gap between the surface and the steel girder.
【図１】図１（ａ）は本発明の一実施例に係るコンクリ
ート面と鋼桁との接着工法の正面図、同図（ｂ）は断面
図である。FIG. 1 (a) is a front view of a method for adhering a concrete surface to a steel girder according to an embodiment of the present invention, and FIG. 1 (b) is a sectional view.
【図２】図２（ａ）は従来のコンクリート面と鋼桁との
接着工法の正面図、同図（ｂ）はその作用説明図であ
る。FIG. 2 (a) is a front view of a conventional method for adhering a concrete surface to a steel girder, and FIG. 2 (b) is an explanatory view of its action.
１ コンクリート床版の裏面 ３ シール材 ４ 接着剤 ５ コンクリート床版 ６ 増設の鋼桁 ９ 樹脂アンカー １０ 溝付き鋼板（上フランジ） １１ 溝 １２ 既設の主桁 １３ ナット １４ 溶接 1 Back side of concrete floor slab 3 Sealing material 4 Adhesive 5 Concrete floor slab 6 Additional steel girder 9 Resin anchor 10 Steel plate with groove (upper flange) 11 Groove 12 Existing main girder 13 Nut 14 Welding
Claims (1)
上記溝付き鋼板の溝を有する面とコンクリート面との間
に接着剤を注入し、上記溝付き鋼板の端部をアンカーに
より上記コンクリート面に締結することを特徴とするコ
ンクリート面と鋼桁との接着方法。1. A grooved steel plate is used for a flange of a steel girder,
An adhesive is injected between the grooved surface of the grooved steel plate and the concrete surface, and the end of the grooved steel plate is fastened to the concrete surface by an anchor between the concrete surface and the steel girder. Bonding method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2793695A JPH08218324A (en) | 1995-02-16 | 1995-02-16 | Bonding method of concrete surface and steel girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2793695A JPH08218324A (en) | 1995-02-16 | 1995-02-16 | Bonding method of concrete surface and steel girder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08218324A true JPH08218324A (en) | 1996-08-27 |
Family
ID=12234791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2793695A Pending JPH08218324A (en) | 1995-02-16 | 1995-02-16 | Bonding method of concrete surface and steel girder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08218324A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691271A (en) * | 2012-06-21 | 2012-09-26 | 中交第一公路勘察设计研究院有限公司 | Sealing structure for gaps between steel plate and concrete in pouring-type steel bonding construction |
| JP2014015753A (en) * | 2012-07-09 | 2014-01-30 | Oriental Shiraishi Corp | Structure and method for joining girder and floor slab together |
| CN106894349A (en) * | 2017-05-13 | 2017-06-27 | 林再颐 | A kind of bridge of high-mechanic intensity |
-
1995
- 1995-02-16 JP JP2793695A patent/JPH08218324A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691271A (en) * | 2012-06-21 | 2012-09-26 | 中交第一公路勘察设计研究院有限公司 | Sealing structure for gaps between steel plate and concrete in pouring-type steel bonding construction |
| CN102691271B (en) * | 2012-06-21 | 2014-04-09 | 中交第一公路勘察设计研究院有限公司 | Sealing structure for gaps between steel plate and concrete in pouring-type steel bonding construction |
| JP2014015753A (en) * | 2012-07-09 | 2014-01-30 | Oriental Shiraishi Corp | Structure and method for joining girder and floor slab together |
| CN106894349A (en) * | 2017-05-13 | 2017-06-27 | 林再颐 | A kind of bridge of high-mechanic intensity |
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