JPH07113277B2 - Steel plate bonding method for concrete structures - Google Patents
Steel plate bonding method for concrete structuresInfo
- Publication number
- JPH07113277B2 JPH07113277B2 JP1135496A JP13549689A JPH07113277B2 JP H07113277 B2 JPH07113277 B2 JP H07113277B2 JP 1135496 A JP1135496 A JP 1135496A JP 13549689 A JP13549689 A JP 13549689A JP H07113277 B2 JPH07113277 B2 JP H07113277B2
- Authority
- JP
- Japan
- Prior art keywords
- steel plate
- bolt
- concrete structure
- wedge
- bonding method
- 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.)
- Expired - Lifetime
Links
Description
【発明の詳細な説明】 〔発明の目的〕 （産業上の利用分野） 本発明は、コンクリート構造物の補強、補修に適した鋼
板接着工法に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a steel plate bonding method suitable for reinforcement and repair of concrete structures.
（従来の技術） 橋脚、床版下面等のコンクリート構造物の補強、補修の
一つとして、その構造物の外面に鋼板を接着する工法が
ある。(Prior Art) As one of the reinforcement and repair of concrete structures such as bridge piers and floor slabs, there is a method of adhering a steel plate to the outer surface of the structure.
この鋼板接着工法は、第５図に示すように、コンクリー
ト構造物１の外面に隙間３を設けて仮止めし、この隙間
にエポキシ樹脂等からなる接着材を充填することによ
り、コンクリート構造物１と鋼板２とを接着するもので
ある。As shown in FIG. 5, in this steel plate bonding method, a gap 3 is provided on the outer surface of the concrete structure 1 to temporarily fix it, and the gap is filled with an adhesive material such as an epoxy resin. And the steel plate 2 are bonded together.
コンクリート構造物１の外面に鋼板２を仮止めするに
は、予めコンクリート構造物１の外面から穿孔した穴７
にくさび４と外筒体５とからなるメカニカルアンカー６
を打ち込み、くさび４によって外筒体５端部を押し拡げ
て固定し、鋼板２のアンカー個所の開口部８よりボルト
９を挿通し、外筒体５のねじ5aとボルト９とのねじ9bと
を螺着して一体とする。To temporarily secure the steel plate 2 to the outer surface of the concrete structure 1, a hole 7 drilled from the outer surface of the concrete structure 1 in advance is used.
Mechanical anchor 6 consisting of wedge 4 and outer cylinder 5
Then, the end of the outer cylinder 5 is pushed and expanded by the wedge 4 and fixed, the bolt 9 is inserted through the opening 8 at the anchor portion of the steel plate 2, and the screw 5a of the outer cylinder 5 and the screw 9b of the bolt 9 are inserted. Are screwed together to become one.
（発明が解決しようとする課題） しかしながら、かかる方法によるとコンクリート構造物
１と鋼板２との間に接着材を注入充填するとその注入圧
力・・・一般的には3t/m2程度、一時的には５〜6t/m2・
・・により、１〜2mm程度のボルトの抜け出しが見られ
る。この原因は、鋼板２にかかる注入圧力によってボル
ト９が引き抜き力Ｐにより抜け出し方向に引張られ、ボ
ルト９に螺着しているメカニカルアンカーの外筒体５が
くさび４からはずれるよう作用するためであり、時には
現場施工コンクリートの脆弱部の存することによるもの
でもある。(Problems to be solved by the invention) However, according to such a method, when the adhesive is injected and filled between the concrete structure 1 and the steel plate 2, the injection pressure is generally 3 t / m 2 or temporarily. 5 to 6t / m 2
・ ・ Depending on the type, the bolt may be pulled out by about 1 to 2 mm. This is because the injection pressure applied to the steel plate 2 pulls the bolt 9 in the pulling-out direction by the pulling-out force P, and acts so that the outer cylinder body 5 of the mechanical anchor screwed to the bolt 9 is disengaged from the wedge 4. At times, it is also due to the presence of fragile parts of on-site concrete.
ボルト９の抜け出しを防止する方法としては、第４図に
示したような公知のアンカーボルトすなわち、くさび４
とボルト９とが一体となっているメカニカルアンカーを
使用すれば鋼板に接着材の注入圧力がかかって、ボルト
９に抜け出し方向の力が作用してもくさび４が外筒体５
に抗して抜け出し防止が可能となる。しかし、先端が常
に突出しているため、この突出部に鋼板の開口部を合せ
てセットする作業が強いられ、作業性が悪く、そのうえ
美観等を損う。As a method for preventing the bolt 9 from coming out, a known anchor bolt, that is, the wedge 4 as shown in FIG.
If a mechanical anchor in which the bolt and the bolt 9 are integrated is used, the wedge 4 will not be deformed even if a force in the direction of pulling out acts on the bolt 9 due to the injection pressure of the adhesive material applied to the steel plate.
It is possible to prevent slipping out against. However, since the tip always projects, the work of setting the opening of the steel plate in alignment with the projecting portion is forced, workability deteriorates, and the aesthetics and the like are impaired.
抜け出しによる影響は、コンクリート構造物と鋼板間に
注入充填する接着材の厚さが5mmの場合に当てはめると
その量が20％もアップすることになり、費用が莫大なも
のとなりきわめて不経済である。The effect of slipping out is that if the thickness of the adhesive that is injected and filled between the concrete structure and the steel plate is 5 mm, the amount will increase by 20%, and the cost will be enormous and extremely uneconomical. .
本発明は、かかる問題点を以下述べるところにより解決
せんとするものである。The present invention intends to solve this problem by the following points.
（課題を解決するための手段） 上記目的を達成するため、本発明のコンクリート構造物
の鋼板接着工法は、まず、コンクリート構造物と鋼板と
を隙間を持たせて一体とするにあたり、コンクリート構
造物に、くさび部分と円筒部分とからなり、円筒部分の
内面にねじを形成したくさび本体とこのくさび本体の外
回りに位置する外筒体とからなるメカニカルアンカーを
コンクリート構造物に埋設し、アンカー相当個所を開口
した鋼板をこのコンクリート構造物に隙間を持たせて沿
わせ、この開口よりボルトを挿通し、くさび本体の円筒
部内面とを螺合せしめ、コンクリート構造物に鋼板を止
め、のち、コンクリート構造物と鋼板との隙間に樹脂等
の接着材を注入充填するというものである。(Means for Solving the Problem) In order to achieve the above object, the steel plate bonding method for a concrete structure according to the present invention is as follows. First, when the concrete structure and the steel plate are integrated with a gap, In addition, a mechanical anchor consisting of a wedge part and a cylindrical part, a wedge main body with threads formed on the inner surface of the cylindrical part, and an outer cylinder located around the outside of the wedge main body is embedded in a concrete structure, and the anchor equivalent part is A steel plate with an opening is placed along this concrete structure with a gap, a bolt is inserted through this opening, and the inner surface of the cylindrical part of the wedge body is screwed together, the steel plate is fixed to the concrete structure, and then the concrete structure An adhesive such as a resin is injected and filled into the gap between the object and the steel plate.
（作用） くさび部分と内面にねじを有する円筒部分とからなるく
さび本体とその外回りに位置する外筒体とからなるメカ
ニカルアンカーとボルトにより鋼板がコンクリート構造
物に仮止めされると、接着材注入圧力が鋼板にかかり、
ボルトに抜け出し方向の引き抜き力Ｐが作用してもボル
トは螺着しているくさび本体のくさびを引張り、くさび
が外筒体に抗して抜け出しにくくなる。また鋼板セット
後にボルトを鋼板の外側から挿通するので作業性が良く
なる。(Function) When the steel plate is temporarily fixed to the concrete structure by the mechanical anchor and the bolt, which is composed of the wedge main body composed of the wedge part and the cylindrical part having the screw on the inner surface and the outer cylindrical body located around the wedge part, the adhesive is injected. Pressure is applied to the steel plate,
Even if the pulling-out force P in the pulling-out direction is applied to the bolt, the bolt pulls the wedge of the wedged body, which makes it difficult for the wedge to pull out against the outer cylinder. Further, since the bolt is inserted from the outside of the steel plate after setting the steel plate, workability is improved.
（実施例） つぎに本発明の実施例を説明する。(Example) Next, the Example of this invention is described.
第１図は、補強又は補修を必要とするコンクリート構造
物１に鋼板２を隙間３を設けてコンクリート構造物に埋
設したメカニカルアンカー６にボルト９を用いて仮止め
したところを示す断面図である。FIG. 1 is a cross-sectional view showing a concrete structure 1 requiring reinforcement or repair, in which a steel plate 2 is provided with a gap 3 and temporarily fixed using a bolt 9 to a mechanical anchor 6 embedded in the concrete structure. .
コンクリート構造物１に埋設されるメカニカルアンカー
６は、くさび本体４と外筒体５とからなり、くさび本体
４は、くさび部分4cと円筒部分4bとからなり、円筒部は
その内面にめねじ4aが形成され、外筒体５は、くさび本
体４の外面に沿う内径を有し、くさび本体４の外回りに
位置している。The mechanical anchor 6 embedded in the concrete structure 1 comprises a wedge body 4 and an outer cylinder body 5, the wedge body 4 comprises a wedge portion 4c and a cylindrical portion 4b, and the cylindrical portion has an internal thread 4a on its inner surface. The outer cylindrical body 5 has an inner diameter along the outer surface of the wedge main body 4 and is located around the outer circumference of the wedge main body 4.
このようにしてなるメカニカルアンカー６はコンクリー
ト構造物１に開口７された表面より埋設される。The mechanical anchor 6 thus formed is embedded in the concrete structure 1 from the surface having the opening 7.
このコンクリート構造物１の表面にメカニカルアンカー
６相当個所を開口８した鋼板２を隙間３を設けて沿わ
せ、ボルト９を挿通し、くさび本体４の円筒部内面のめ
ねじ4aとボルト９の外面のおねじ9aとを螺着して仮止め
する。On the surface of this concrete structure 1, a steel plate 2 having openings 8 corresponding to mechanical anchors 6 is provided along a gap 3 and a bolt 9 is inserted, and a female screw 4a on the inner surface of the cylindrical portion of the wedge body 4 and an outer surface of the bolt 9 are inserted. Male screw 9a is screwed on and temporarily fixed.
コンクリート構造物１の表面と鋼板２との隙間３には、
樹脂からなる接着材を注入充填する。In the gap 3 between the surface of the concrete structure 1 and the steel plate 2,
An adhesive made of resin is injected and filled.
このようにして、コンクリート構造物の補強、補修に適
した鋼板接着工法が完成する。In this way, a steel plate bonding method suitable for reinforcing and repairing concrete structures is completed.
第２図は、別の実施例を示す。FIG. 2 shows another embodiment.
この実施例も第１図に示した実施例と同様、くさび部分
4cと円筒部分4bとからなり、円筒部分4bの内面にめねじ
4aを形成したくさび本体４とこのくさび本体４の外回り
に位置する外筒体５とからなるメカニカルアンカー６を
コンクリート構造物１に埋設し、このコンクリート構造
物１の表面に鋼板２をコンクリート構造物１の表面との
間に隙間３を持たせアンカー個所を開口８して沿わせ、
この開口８よりボルト９を挿通し、くさび本体４の円筒
部分4b内面のめねじ4aと螺合せしめ、コンクリート構造
物１の表面と鋼板２との隙間３に接着材を充填注入し、
コンクリート構造物の補強、補修に適した鋼板接着工法
とするものである。Similar to the embodiment shown in FIG. 1, this embodiment also has a wedge portion.
4c and cylindrical part 4b, and female thread is formed on the inner surface of the cylindrical part 4b.
A mechanical anchor 6 consisting of a wedge body 4 forming a 4a and an outer cylinder body 5 located around the wedge body 4 is embedded in a concrete structure 1, and a steel plate 2 is provided on the surface of the concrete structure 1 as a concrete structure. A gap 3 is provided between the surface of 1 and the anchor portion along the opening 8
A bolt 9 is inserted through the opening 8 and screwed with the internal thread 4a on the inner surface of the cylindrical portion 4b of the wedge body 4, and the adhesive is filled and injected into the gap 3 between the surface of the concrete structure 1 and the steel plate 2.
This is a steel plate bonding method suitable for reinforcing and repairing concrete structures.
第１図に示した実施例と異なるところは、ボルト９の頭
9bが異なり、この実施例の場合、鋼板２の外面にボルト
９の頭9bが突出しない。The difference from the embodiment shown in FIG. 1 is the head of the bolt 9.
9b is different, and in this embodiment, the head 9b of the bolt 9 does not project to the outer surface of the steel plate 2.
このようにしてなる接着工法（Ａ）と既述した従来の接
着工法（Ｂ）におけるボルトの抜け出し量と引抜耐力と
の関係を示すと第３図に示すとおりである。The relationship between the pull-out strength and the pull-out amount of the bolt in the bonding method (A) thus formed and the conventional bonding method (B) described above is shown in FIG.
第３図によれば、本発明に係る接着工法は、従来の接着
工法に比し、引抜耐力が大きく、しかもボルトの抜け出
し量は小さいことがわかる。According to FIG. 3, it can be seen that the bonding method according to the present invention has a large pulling-out proof strength and a small amount of bolt coming out, as compared with the conventional bonding method.
本発明は上述のようにしてなるので、すなわち、メカニ
カルアンカーにおいて、くさび部分と円筒部分とを一体
化し、円筒部分内面にねじを設けてなるので、従来のよ
うに外筒体の内面にねじを設けたのとは異なり、円筒部
分内面に螺着されたボルトに引き抜き力が働いてもくさ
び本体のくさび部分が外筒体に抗して抜け出しにくくな
る。したがって、コンクリート構造物に鋼板を仮止め
し、その空隙に接着材を注入充填するときにかかる注入
圧力によってもボルトの抜け出しは回避されるか、きわ
めて少くなる。そのため、コンクリート構造物と鋼板と
の空隙は一定に保たれ、余分に接着材を注入することが
少なくなる特有の利点を有する。そのうえ、メカニカル
アンカーの円筒部にボルトを鋼板の外側より挿通する構
造となっているので、位置合せが容易である。また、ボ
ルトとくさびが一体となっているメカニカルアンカーに
比し、美観も優れている。Since the present invention is configured as described above, that is, in the mechanical anchor, the wedge portion and the cylindrical portion are integrated, and the screw is provided on the inner surface of the cylindrical portion. Unlike the case where the bolt is provided, even if a pulling force is applied to the bolt screwed to the inner surface of the cylindrical portion, the wedge portion of the wedge main body does not easily come out against the outer cylindrical body. Therefore, even if the steel plate is temporarily fixed to the concrete structure and the gap is filled with the adhesive material, the bolt is prevented from coming off or extremely reduced even by the injection pressure applied. Therefore, the gap between the concrete structure and the steel plate is kept constant, and there is a particular advantage that the amount of extra adhesive injected is reduced. In addition, since the bolt is inserted into the cylindrical portion of the mechanical anchor from the outside of the steel plate, the alignment is easy. In addition, it has a better appearance than mechanical anchors that have a bolt and a wedge integrated.
第１図は、本発明の実施例を示す断面図、第２図は、別
の実施例を示す断面図、第３図は、本発明と従来例のボ
ルトの抜け出し量と引抜耐力を示す線図、第４図は、従
来のアンカーボルトの断面図、第５図は、従来例を示す
断面図である。 図面において、１はコンクリート構造物、２は鋼板、３
は空隙、４はくさび本体、５は外筒体、６はくさび本体
と外筒体からなるメカニカルアンカー、９はボルトであ
る。FIG. 1 is a cross-sectional view showing an embodiment of the present invention, FIG. 2 is a cross-sectional view showing another embodiment, and FIG. 3 is a line showing the amount of pull-out and pull-out strength of bolts of the present invention and a conventional example. 4 and 5 are sectional views of a conventional anchor bolt, and FIG. 5 is a sectional view showing a conventional example. In the drawings, 1 is a concrete structure, 2 is a steel plate, 3
Is a void, 4 is a wedge main body, 5 is an outer cylindrical body, 6 is a mechanical anchor composed of the wedge main body and the outer cylindrical body, and 9 is a bolt.
フロントページの続き (72)発明者 関本 宏 兵庫県西宮市甲子園町３―16―611 (56)参考文献 特開 昭59−141670（ＪＰ，Ａ) 実開 昭57−128610（ＪＰ，Ｕ)Front Page Continuation (72) Inventor Hiroshi Sekimoto 3-16-611 Koshien-cho, Nishinomiya-shi, Hyogo (56) References JP 59-141670 (JP, A) JP 57-128610 (JP, U)
Claims (1)
分の内面にねじを形成したくさび本体とこのくさび本体
の外回りに位置する外筒体とからなるメカニカルアンカ
ーをコンクリート構造物に埋設し、このコンクリート構
造物面に鋼板をコンクリート構造物との間に隙間を持た
せ、アンカー相当個所を開口して沿わせ、この開口より
ボルトを挿通し、ボルト内面のねじとくさび本体の円筒
部内面のねじとを螺合せしめ、コンクリート構造物面と
鋼板との隙間に接着材を充填することを特徴とするコン
クリート構造物の鋼板接着工法。1. A mechanical anchor comprising a wedge portion and a cylindrical portion, a wedge main body having a thread formed on the inner surface of the cylindrical portion, and an outer cylindrical body located around the outer periphery of the wedge main body, is embedded in a concrete structure, Make a steel plate on this concrete structure surface with a gap between it and the concrete structure, and open the equivalent part of the anchor, insert the bolt through this opening, insert the bolt on the inner surface of the bolt and the inner surface of the cylindrical part of the wedge body. A method for adhering a steel plate to a concrete structure, which comprises screwing screws together and filling an adhesive between the concrete structure surface and the steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1135496A JPH07113277B2 (en) | 1989-05-29 | 1989-05-29 | Steel plate bonding method for concrete structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1135496A JPH07113277B2 (en) | 1989-05-29 | 1989-05-29 | Steel plate bonding method for concrete structures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH032469A JPH032469A (en) | 1991-01-08 |
| JPH07113277B2 true JPH07113277B2 (en) | 1995-12-06 |
Family
ID=15153101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1135496A Expired - Lifetime JPH07113277B2 (en) | 1989-05-29 | 1989-05-29 | Steel plate bonding method for concrete structures |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07113277B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1162264A (en) * | 1997-08-13 | 1999-03-05 | Takenaka Komuten Co Ltd | A seismatic reinforcement structure of crust frame |
| KR100501747B1 (en) * | 2002-01-21 | 2005-07-18 | 주식회사 동일화스너상사 | Sealing constructing method for preventing epoxy leakage when attaching steel plates on by anchor bolts and apparatus thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS585688Y2 (en) * | 1980-11-10 | 1983-01-31 | 株式会社 サンキット | Reinforcement structure of concrete floorboards |
| JPS59141670A (en) * | 1983-01-31 | 1984-08-14 | 岡 正孝 | Pressurizing construction method by elastomer apparatus for certainly injecting filler material in injecting filler material by attaching steel plate to concrete floor plate and peeled detached part of beam lower end |
-
1989
- 1989-05-29 JP JP1135496A patent/JPH07113277B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH032469A (en) | 1991-01-08 |
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