JP5913012B2 - Resin injection method for anchors embedded in concrete surface - Google Patents
Resin injection method for anchors embedded in concrete surface Download PDFInfo
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- JP5913012B2 JP5913012B2 JP2012194064A JP2012194064A JP5913012B2 JP 5913012 B2 JP5913012 B2 JP 5913012B2 JP 2012194064 A JP2012194064 A JP 2012194064A JP 2012194064 A JP2012194064 A JP 2012194064A JP 5913012 B2 JP5913012 B2 JP 5913012B2
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- 229920005989 resin Polymers 0.000 title claims description 78
- 239000011347 resin Substances 0.000 title claims description 78
- 238000002347 injection Methods 0.000 title claims description 12
- 239000007924 injection Substances 0.000 title claims description 12
- 238000000034 method Methods 0.000 title claims description 9
- 238000012856 packing Methods 0.000 claims description 11
- 238000001125 extrusion Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 8
- 238000010276 construction Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000011151 fibre-reinforced plastic Substances 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 229920002978 Vinylon Polymers 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Description
本発明は、ビルや擁壁のコンクリート面にタイルや外装板を固着したり、トンネルなどのコンクリート面の剥落したコンクリート片の落下防止用ネットを貼着したりするために用いられるアンカーの施工に用いられるもので、コンクリート面に埋設したアンカーパイプに樹脂を注入する樹脂注入方法に関するものである。 The present invention is used for the construction of anchors used for fixing tiles and exterior boards to the concrete surface of buildings and retaining walls, and for attaching a net for preventing fall of concrete pieces peeled off from concrete surfaces such as tunnels. The present invention relates to a resin injection method for injecting a resin into an anchor pipe embedded in a concrete surface.
ビルや擁壁のコンクリート面は、装飾のために後施工でタイルや外装板が貼り付けられたり、看板などが設けられたりすることがある。また、経時劣化に伴いこれらを張替えることが必要となる場合もある。
また、トンネルや法面などの野外の構造物では雨風や気温の変化、海辺においては塩害、その他の要因により、表面のコンクリートが経時劣化によりひび割れや下地との剥離を生じることが多々あり、剥落したコンクリートが地上に落下しないように受け止めるＦＲＰ（繊維強化プラスチック）や高強度ビニロン（塩ビ系合成樹脂）などのネットによりコンクリート面を覆う工法がある。（特許文献１）
On the concrete surface of a building or retaining wall, tiles or exterior panels may be pasted for decoration or a signboard may be provided. Moreover, it may be necessary to change these over time.
Also, in outdoor structures such as tunnels and slopes, due to changes in wind and temperature, salt damage at the beach, and other factors, the concrete on the surface often cracks and peels off from the ground due to deterioration over time. There is a construction method in which the concrete surface is covered with a net such as FRP (fiber reinforced plastic) and high-strength vinylon (vinyl chloride-based synthetic resin), which is received so that the finished concrete does not fall on the ground. (Patent Document 1)
これらのタイルや外装板、ネットなどの貼着物２３をコンクリート面２１に取り付けるには、図５に示すように躯体２０に穿設した下孔２２にアンカーパイプ１を挿入してロックピン７を打ち込んで固着し、このアンカーパイプ１の鍔部５で貼着物２３を抑えて固定する。
また、基端部の内面にねじを形成したアンカーパイプ１を躯体２０に穿設した下孔２２にアンカーパイプ１を埋め込み、前記ねじにアンカーボルトを螺合することによって貼着物２３を固定する場合もある。（図示せず。）
以上のようなアンカーパイプ１は、パイプ部分にかかる剪断力に対する強度、鍔部５の強度、及び抜けに対する保持強度の３種類の強度が要求されており、特にトンネルの天井面や下向きの斜面などに施工する場合は、抜けに対する保持強度が重要になる。
In order to attach the sticking material 23 such as a tile, an exterior plate, and a net to the concrete surface 21, the anchor pipe 1 is inserted into the lower hole 22 formed in the housing 20 and the lock pin 7 is driven as shown in FIG. Then, the sticking object 23 is suppressed and fixed by the flange portion 5 of the anchor pipe 1.
In addition, when the anchor pipe 1 is embedded in a lower hole 22 in which a anchor pipe 1 having a screw formed on the inner surface of the base end portion is drilled in the housing 20 and the anchor bolt is screwed to the screw, the sticking object 23 is fixed. There is also. (Not shown)
The anchor pipe 1 as described above is required to have three kinds of strengths, ie, the strength against the shearing force applied to the pipe portion, the strength of the flange portion 5 and the holding strength against the slipping, particularly the tunnel ceiling surface and the downward slope. In the case of construction, it is important to have a holding strength against falling out.
そこで、強度を補完する目的でアンカーパイプ１に樹脂を注入する工法がある。
アンカーパイプ１は、図５に示すようにロックピン７を打ち込むことにより先端部３が拡開するように、先端部３側の内面に凸部４と摺り割５が設けられている。
躯体２０に穿設された下孔２２にこのアンカーパイプ１を挿入し、このアンカーパイプ１の先端部３にまでロックピン７を打ち込むことにより凸部４が外側に押し出されて先端部３が拡開し、下孔２２の内面に食込んで固着される。
Therefore, there is a method of injecting resin into the anchor pipe 1 for the purpose of complementing the strength.
As shown in FIG. 5, the anchor pipe 1 is provided with a convex portion 4 and a slit 5 on the inner surface on the distal end portion 3 side so that the distal end portion 3 is expanded by driving a lock pin 7.
The anchor pipe 1 is inserted into the lower hole 22 drilled in the housing 20 and the lock pin 7 is driven into the distal end portion 3 of the anchor pipe 1 so that the convex portion 4 is pushed out and the distal end portion 3 is expanded. Open and bite into the inner surface of the lower hole 22 to be fixed.
この躯体２０に固着されたアンカーパイプ１の基端部２側から、図６に示す樹脂注入器３１により樹脂を注入する。
注入された樹脂は、矢印３３で示すようにアンカーパイプ１内を進んで先端側３に達し、矢印３４で示すように摺り割６を通って下孔２２の最深部まで充填されるとともに、アンカーパイプ１と下孔２２との隙間１４にも浸入し、アンカーパイプ１を外側から覆うよう充填される。
また、樹脂は下孔２２内だけではなく、矢印３７で示すように下孔２２の周りに生じた亀裂２７やモルタルの浮き部分（図示せず）にも浸入して補修が行われる。
下孔２２とアンカーパイプ１との隙間１４を樹脂で埋めることにより、特に抜けに対する保持強度が向上するとともに、気密性、水密性が向上し、アンカーパイプ１と水との接触による腐食を抑制することにより、経時劣化を減少させて耐用年数を延ばすことができる。
Resin is injected from the base end 2 side of the anchor pipe 1 fixed to the housing 20 by a resin injector 31 shown in FIG.
The injected resin advances through the anchor pipe 1 as indicated by an arrow 33 and reaches the distal end side 3, and is filled to the deepest part of the lower hole 22 through the slit 6 as indicated by an arrow 34. It also enters the gap 14 between the pipe 1 and the lower hole 22 and is filled so as to cover the anchor pipe 1 from the outside.
In addition to the resin in the lower hole 22, the resin enters the crack 27 and the mortar floating portion (not shown) formed around the lower hole 22 as indicated by an arrow 37 for repair.
By filling the gap 14 between the lower hole 22 and the anchor pipe 1 with a resin, the retention strength against the breakthrough is improved, and the airtightness and watertightness are improved, and corrosion due to contact between the anchor pipe 1 and water is suppressed. As a result, the deterioration with time can be reduced and the service life can be extended.
多くの建設関係団体の規定では、アンカーパイプ１やアンカーボルトの素材として、耐腐食性が最も高いＳＵＳ３０４を使用し、かつ異種金属の接触による腐食を防ぐためにすべて同じ素材を使うことが要求されている。
ＳＵＳ３０４は、素地のままであれば耐腐食性が高いが、部品に加工する際の曲げや延展により組織変化を起こして耐腐食性が低下する。
前述のようなアンカーパイプ１では、内面の凸部４や基端部２の鍔部５を形成するためにパイプに延展、絞りなどの加工を加えるので、これらの部分が腐食しやすくなっている。
The regulations of many construction organizations require that SUS304, which has the highest corrosion resistance, be used as the material for anchor pipe 1 and anchor bolts, and that the same material be used to prevent corrosion due to contact with dissimilar metals. Yes.
SUS304 has high corrosion resistance if it is left as it is, but it undergoes structural changes due to bending and spreading when it is processed into a component, and the corrosion resistance is reduced.
In the anchor pipe 1 as described above, since processing such as extending and drawing is applied to the pipe in order to form the convex portion 4 on the inner surface and the flange portion 5 of the base end portion 2, these portions are easily corroded. .
従来は、図６に示すような、先端が円錐形のノズル３２を装着した汎用のコーキングガン３１を用いてアンカーパイプ１内に樹脂を注入していた。
コーキングガン３１は、図５に示すように下孔２２に固着されたアンカーパイプ１の基端部２から円錐形のノズル３２の先端を挿し込み、コンクリート面２１に人力で押し当てながらレバー１２を引くことによりノズル３２から圧出された樹脂をアンカーパイプ１の内部に注入する。
Conventionally, as shown in FIG. 6, resin is injected into the anchor pipe 1 using a general-purpose caulking gun 31 equipped with a nozzle 32 having a conical tip.
As shown in FIG. 5, the caulking gun 31 inserts the tip of a conical nozzle 32 from the base end 2 of the anchor pipe 1 fixed to the pilot hole 22, and pushes the lever 12 while pressing it against the concrete surface 21 by human power. The resin pressed out from the nozzle 32 by being pulled is injected into the anchor pipe 1.
この注入の際、コーキングガン３１のノズル３２は円錐形をなしているため、アンカーパイプ１の基端部２の内側とノズル３２の側面が円状の線で接触し、ノズル３２の先端はアンカーパイプ１の基端部２の内径に応じた一定の深さまで達する。
前記ノズル３２はポリプロピレンなどのやや軟質の合成樹脂で形成されてはいるが、アンカーパイプ１の基端部２との間が完全に密閉されるわけではないので多少の隙間が生じている。
During this injection, the nozzle 32 of the caulking gun 31 has a conical shape, so that the inside of the proximal end portion 2 of the anchor pipe 1 and the side surface of the nozzle 32 are in contact with each other with a circular line, and the tip of the nozzle 32 is anchored It reaches a certain depth according to the inner diameter of the base end 2 of the pipe 1.
Although the nozzle 32 is made of a slightly soft synthetic resin such as polypropylene, the gap between the nozzle 32 and the base end 2 of the anchor pipe 1 is not completely sealed.
コーキングガン３１の引き金１２を引いて樹脂の注入を始めると、樹脂は矢印３３で示すようにアンカーパイプ１内を進んで先端側３に達し、矢印３４で示すように摺り割６を通って下孔２２の最深部まで充填される。次いで矢印３５で示すようにアンカーパイプ１と下孔２２の隙間１４と、矢印３６で示すノズル３２とアンカーパイプ１の基端部２の間に浸入してゆく。
また、樹脂は下孔２２内だけではなく、矢印３７で示すように下孔２２の周りに生じた亀裂２７やモルタルの浮き部分にも浸入して補修が行われる。
When the injection of resin is started by pulling the trigger 12 of the caulking gun 31, the resin advances in the anchor pipe 1 as indicated by an arrow 33 and reaches the distal end side 3, and passes through the slit 6 as indicated by an arrow 34. The hole 22 is filled up to the deepest part. Next, as shown by an arrow 35, the gap enters between the anchor pipe 1 and the lower hole 22, and enters between the nozzle 32 shown by the arrow 36 and the proximal end portion 2 of the anchor pipe 1.
In addition to the resin in the lower hole 22, the resin enters the crack 27 and the floating part of the mortar generated around the lower hole 22 as indicated by an arrow 37 for repair.
ここで、アンカーパイプ１と下孔２２の隙間１４や下孔２２の周りに生じた亀裂２７には、ある程度以上の圧力をかけて樹脂を注入する必要があるが、圧力をかけるとノズル３２とアンカーパイプ１の基端部２の隙間から空気が漏れ出し、その隙間の大きさによっては樹脂も漏れ出してくる。
これにより、注入圧力が逃げてしまい、アンカーパイプ１と下孔２２の隙間１４や下孔２２の周りに生じた亀裂２７への樹脂の充填が不充分になるという問題点があった。
Here, it is necessary to inject resin into the gap 14 between the anchor pipe 1 and the lower hole 22 and the crack 27 generated around the lower hole 22 by applying a pressure of a certain level or more. Air leaks from the gap at the base end portion 2 of the anchor pipe 1, and the resin also leaks depending on the size of the gap.
As a result, the injection pressure escapes, and there is a problem that the resin is insufficiently filled into the gap 14 between the anchor pipe 1 and the lower hole 22 or the crack 27 generated around the lower hole 22.
さらに、アンカーパイプ１の長さは一定ではなく、貼着物２３の厚さや重量などの施工環境によってその長さが異なるのに対して、ノズル３２の先端が到達する深さは、ノズル３２の形状が一定の円錐形であるため、アンカーパイプ１の内径によって決まる一定の深さである。
樹脂を下孔２２の最深部まで充填し、かつ、アンカーパイプ１と下孔２２との隙間１４にも充分に充填するためには、ノズル３２の先端がアンカーパイプ１のすり割り６の手前の深さまで到達していることが望ましい。
しかし、図５に示すように、アンカーパイプ１の長さに比べてノズル３２が到達する深さが浅い場合は、下孔２２内に空気溜まりが生じ易く、充分な樹脂の充填ができない場合が多々あるという問題点があった。
Further, the length of the anchor pipe 1 is not constant, and the length varies depending on the construction environment such as the thickness and weight of the sticking object 23, whereas the depth reached by the tip of the nozzle 32 is the shape of the nozzle 32. Is a certain conical shape, and therefore has a certain depth determined by the inner diameter of the anchor pipe 1.
In order to fill the resin to the deepest part of the lower hole 22 and to sufficiently fill the gap 14 between the anchor pipe 1 and the lower hole 22, the tip of the nozzle 32 is located in front of the slit 6 of the anchor pipe 1. It is desirable to reach the depth.
However, as shown in FIG. 5, when the depth reached by the nozzle 32 is shallower than the length of the anchor pipe 1, air is likely to be trapped in the lower hole 22, and sufficient resin filling may not be possible. There were many problems.
本発明は、上記問題点に鑑みなされたものであり、アンカーパイプ内に樹脂を注入する際に、樹脂注入器のノズルとアンカーパイプの基端部との間から圧入圧力が逃げないように密閉して、アンカーパイプと下孔の隙間や下孔の周りに生じた亀裂などに樹脂を効率よく注入することにより、施工強度の補完を向上させ、かつ腐食を抑制することにより耐用年数を延ばすことができることができる樹脂注入器を提供するものである。 The present invention has been made in view of the above problems, and when injecting resin into the anchor pipe, the sealing is performed so that the press-fitting pressure does not escape from between the nozzle of the resin injector and the base end portion of the anchor pipe. In addition, by efficiently injecting resin into the gap between the anchor pipe and the lower hole or cracks around the lower hole, the supplement of construction strength is improved and the service life is extended by suppressing corrosion. It is an object of the present invention to provide a resin injector that can be used.
本発明の請求項１は、コンクリート面に貼着物を固着するために、前記コンクリート面に穿設された下孔に、アンカーパイプを挿入し、このアンカーパイプの先端部に内面の凸部とすり割とを設け、この先端部にロックピンを打ち込むことにより、前記凸部が外側に押し出されて前記アンカーパイプの先端部が拡開し、前記下孔の内面に食い込んで前記アンカーパイプを固着し、この固着されたアンカーパイプに樹脂を注入する樹脂注入方法において、
前記樹脂注入器本体の先端部に、前記アンカーパイプの内径より細く形成された筒状のノズルを設け、前記アンカーパイプの基端部の外側に鍔部を延展加工し、この鍔部と前記樹脂注入器の先端部との間に、これらの鍔部と前記樹脂注入器の先端部との間を密閉するパッキンを設け、このパッキンと前記樹脂注入器の先端部との間にカラーを挟み、このカラーで前記筒状のノズルの先端部がアンカーパイプの先端部のすり割りのやや手前までの深さに到達するように調節することを特徴とする方法である。
According to a first aspect of the present invention, an anchor pipe is inserted into a prepared hole drilled in the concrete surface in order to fix an adherend to the concrete surface, and a convex portion of an inner surface is rubbed at the tip of the anchor pipe. By providing a split and driving a lock pin into this tip, the convex portion is pushed outward, the tip of the anchor pipe expands, bites into the inner surface of the pilot hole, and the anchor pipe is fixed. In the resin injection method of injecting resin into this anchor pipe anchored,
A cylindrical nozzle formed narrower than the inner diameter of the anchor pipe is provided at the distal end portion of the resin injector main body, and a collar portion is extended outside the proximal end portion of the anchor pipe. The collar portion and the resin Between the tip of the injector, a packing is provided that seals between the flange and the tip of the resin injector, and a collar is sandwiched between the packing and the tip of the resin injector, a method characterized in that the distal end portion of the tubular nozzle by this color is adjusted so as to reach a depth of up to a little before the slit in the front end portion of the anchor pipes.
本発明の請求項２は、請求項１において、電動の動力によりノズルから樹脂を圧出することを特徴とするものである。
Claim 2 of the present invention, in claim 1, it is characterized in that extrusion of the resin from the nozzle by an electric power.
請求項１記載の発明によれば、樹脂注入器の先端部とアンカーパイプの基端部との間がパッキンにより空気が流通しないように密閉されているので、ノズルとアンカーパイプの内側との隙間から圧入圧力が逃げることがなく、アンカーピンと下孔との隙間や下孔の周りに生じた亀裂などに効率よく樹脂を充填することができ、施工強度を補完して、特に抜けに対する保持強度を補完して向上させ、かつ腐食を抑制することにより耐用年数を延ばすことができるという効果を有する。
また、ノズルの先端がアンカーパイプのすり割りのやや手前までの深さに到達するので、すり割りを通じて下孔の最深部及びアンカーピンと下孔との隙間に効率よく樹脂を充填することができ、空気溜まりなどが生じにくいという効果を有する。
さらに、カラーによってアンカーパイプの先端部のすり割りのやや手前までの深さに到達する深さを調節できるので、１種類の長さのノズルで長さが相違するアンカーパイプに対応することができるという効果を有する。
According to the first aspect of the present invention, the gap between the nozzle and the inner side of the anchor pipe is sealed between the distal end portion of the resin injector and the proximal end portion of the anchor pipe so that air does not flow by packing. The press-fitting pressure does not escape from the resin, and the resin can be efficiently filled into the gap between the anchor pin and the lower hole and cracks around the lower hole. It has the effect that the service life can be extended by supplementing and improving and suppressing corrosion.
Moreover, since the tip of the nozzle reaches a depth just before the slit of the anchor pipe, the deepest part of the lower hole and the gap between the anchor pin and the lower hole can be efficiently filled with resin through the slit, It has an effect that air accumulation is less likely to occur.
Furthermore, since the depth at which the tip of the anchor pipe reaches a depth slightly closer to the front can be adjusted by the collar, it is possible to deal with anchor pipes having different lengths with a single type of nozzle. It has the effect.
請求項２記載の発明によれば、電動の動力によりノズルから樹脂を圧出するので、樹脂の圧入を人力に頼ることなく、数多くの施工を効率よく行うことができるという効果を有する。 According to the second aspect of the present invention, since the resin is pressed out from the nozzle by electric power, there is an effect that a large number of constructions can be efficiently performed without relying on human force for press-fitting the resin.
本発明による樹脂注入器は、コンクリート面に貼着物を固着するために、前記コンクリート面に穿設された下孔に固着されたアンカーパイプに樹脂を注入する樹脂注入器において、樹脂注入器本体の先端部に前記アンカーパイプの内径より細く形成された筒状のノズルを設け、このノズルの基端部に、アンカーパイプの基端部と樹脂注入器の先端部との間を密閉するパッキンを設け、樹脂の圧入の際にアンカーパイプの基端部側から圧入圧力が逃げないようにする。 A resin injector according to the present invention is a resin injector for injecting resin into an anchor pipe fixed to a prepared hole drilled in the concrete surface in order to fix an adhesive to a concrete surface. A cylindrical nozzle formed thinner than the inner diameter of the anchor pipe is provided at the distal end, and a packing is provided at the proximal end of the nozzle to seal between the proximal end of the anchor pipe and the distal end of the resin injector. When the resin is press-fitted, the press-fitting pressure is prevented from escaping from the base end side of the anchor pipe.
次に本発明の樹脂注入方法について図面に基づいて説明する。
本発明に用いられる樹脂注入器８は、図３に示すように、先端部に設けられたノズル９を除く本体部分は従来のものと同じものであり、一般にはコーキングガンと呼ばれている。
この樹脂注入器８の先端部１７には、従来の円錐形のノズル３２に換えて、図３に示すように筒状のノズル９が設けられ、このノズル９の基端部にはパッキン１０が設けられている。
Next, the resin injection method of the present invention will be described with reference to the drawings.
As shown in FIG. 3, the resin injector 8 used in the present invention has the same main body portion as the conventional one except for the nozzle 9 provided at the tip, and is generally called a caulking gun.
The tip 17 of the resin injector 8 is provided with a cylindrical nozzle 9 as shown in FIG. 3 in place of the conventional conical nozzle 32, and a packing 10 is provided at the base end of the nozzle 9. Is provided.
前記ノズル９は、図１に示すようにアンカーパイプ１の内径よりもやや細い外径とアンカーパイプ１の基端部２からすり割り６のやや手前までの深さ到達する長さを有する。
このノズル９の外径と長さはアンカーパイプ１の内径と長さに応じた大きさのものが用いられる。なお、長さについては、長めのノズル９を利用して、図４に示すようにパッキン１０と先端部１７との間にカラー１８を挟むなどして調節するようにしても良い。
アンカーパイプ１は、図２に示すように、パイプの基端部２に外側に延展加工された鍔部５を有し、先端部３にはロックピン７を打ち込むことにより外側に押圧するための凸部４と拡開するためのすり割り６が設けられている。
As shown in FIG. 1, the nozzle 9 has an outer diameter that is slightly narrower than the inner diameter of the anchor pipe 1 and a length that reaches a depth from the base end portion 2 of the anchor pipe 1 to a position just before the slit 6.
The nozzle 9 has an outer diameter and a length corresponding to the inner diameter and length of the anchor pipe 1. The length may be adjusted by using a longer nozzle 9 and sandwiching a collar 18 between the packing 10 and the tip 17 as shown in FIG.
As shown in FIG. 2, the anchor pipe 1 has a flange portion 5 that is extended outwardly at the proximal end portion 2 of the pipe, and is pushed outward by driving a lock pin 7 into the distal end portion 3. A slit 6 for expanding the convex portion 4 is provided.
次に、この樹脂注入器を用いたアンカーパイプ１への樹脂の注入について図１に基づいて説明する。
まず、鍔部５で貼着物２３を挟んだアンカーパイプ１を躯体２０に穿設された下孔２２に挿入し、アンカーパイプ１の先端部３にロックピン７を打ち込んで固着する。ここまでは、従来と変わるところはない。
次に、前記躯体２０に固着されたアンカーパイプ１に樹脂注入器８の先端のノズル９を挿入し、樹脂注入器８を躯体２０側に押し付けつつ引き金１２を引いて樹脂の注入を始める。
Next, injection of resin into the anchor pipe 1 using this resin injector will be described with reference to FIG.
First, the anchor pipe 1 with the sticking material 23 sandwiched between the collar portions 5 is inserted into the lower hole 22 formed in the housing 20, and the lock pin 7 is driven into and fixed to the distal end portion 3 of the anchor pipe 1. Up to this point, there is no difference from the past.
Next, the nozzle 9 at the tip of the resin injector 8 is inserted into the anchor pipe 1 fixed to the casing 20, and the trigger 12 is pulled while pressing the resin injector 8 toward the casing 20 to start the resin injection.
すると、樹脂は矢印１５で示すようにすり割り６を通って下孔２２の最深部に充填され、次いで矢印１６で示すようにアンカーパイプ１と下孔２２の隙間１４や矢印１９で示すように下孔２２の周りに生じた亀裂２７などに浸入してゆく。
ここで、樹脂注入器８の先端部１８とアンカーパイプ１の基端部２、鍔部５との間はパッキン１０により空気が流通しないように密閉されているので、ノズル９とアンカーパイプ１の内側との隙間には樹脂はほとんど流れ込まない。従って、注入圧力がアンカーピン１と下孔２２との隙間１４や下孔２２の周りに生じた亀裂２７に集中して効率よく樹脂を充填することができ、施工強度を補完して、特に抜けに対する保持強度を向上させ、かつ腐食を抑制することにより耐用年数を延ばすことができる。
Then, the resin passes through the slit 6 as shown by the arrow 15 and fills the deepest portion of the lower hole 22, and then, as shown by the arrow 16, the gap 14 between the anchor pipe 1 and the lower hole 22 and the arrow 19 as shown in FIG. It enters the crack 27 and the like generated around the lower hole 22.
Here, since the distal end portion 18 of the resin injector 8 and the base end portion 2 and the flange portion 5 of the anchor pipe 1 are sealed by the packing 10 so that air does not flow, the nozzle 9 and the anchor pipe 1 Almost no resin flows into the gap with the inside. Accordingly, the injection pressure can be concentrated efficiently in the gap 14 between the anchor pin 1 and the lower hole 22 and the crack 27 generated around the lower hole 22, and the resin can be efficiently filled. It is possible to extend the service life by improving the holding strength against and suppressing corrosion.
以上の実施例では、説明しなかったが、本発明に用いられる樹脂注入器は、電動で樹脂を圧出するものでも良いし、引き金を引くことにより人力で圧出するものでもよい。 Although not described in the above embodiments, the resin injector used in the present invention may be one that electrically extrudes resin, or one that is manually expelled by pulling a trigger.
１…アンカーパイプ、２…アンカーパイプの基端部、３…アンカーパイプの先端部、４…凸部、５…鍔部、６…すり割り、７…ロックピン、８…樹脂注入器（コーキングガン）、９…ノズル、１０…パッキン、１１…握り手、１２…レバー、１４…ノズルと下孔との隙間、１５、１６…樹脂の流れを示す矢印、１７…樹脂注入器の先端部、１８…カラー、２０…躯体、２１…コンクリート面、２２…下穴、２３…貼着物、３１…従来のコーキングガン、３２…ノズル、３３、３４、３５、３６…樹脂の流れを示す矢印。
DESCRIPTION OF SYMBOLS 1 ... Anchor pipe, 2 ... Base end part of anchor pipe, 3 ... Tip part of anchor pipe, 4 ... Convex part, 5 ... Gutter part, 7 ... Slot, 7 ... Lock pin, 8 ... Resin injector (caulking gun) ), 9 ... Nozzle, 10 ... Packing, 11 ... Grip, 12 ... Lever, 14 ... Gap between nozzle and pilot hole, 15, 16 ... Arrow indicating the flow of resin , 17 ... Tip of resin injector , 18 DESCRIPTION OF SYMBOLS ... Color | collar , 20 ... Housing, 21 ... Concrete surface, 22 ... Pilot hole, 23 ... Paste, 31 ... Conventional caulking gun, 32 ... Nozzle, 33, 34, 35, 36 ... Arrow which shows the flow of resin.
Claims (2)
前記樹脂注入器本体の先端部に、前記アンカーパイプの内径より細く形成された筒状のノズルを設け、
前記アンカーパイプの基端部の外側に鍔部を延展加工し、
この鍔部と前記樹脂注入器の先端部との間に、これらの鍔部と前記樹脂注入器の先端部との間を密閉するパッキンを設け、
このパッキンと前記樹脂注入器の先端部との間にカラーを挟み、
このカラーで前記筒状のノズルの先端部がアンカーパイプの先端部のすり割りのやや手前までの深さに到達するように調節する
ことを特徴とする樹脂注入方法。 An anchor pipe is inserted into the prepared hole drilled in the concrete surface in order to fix the adherend to the concrete surface, and a convex portion and a slit on the inner surface are provided at the tip of the anchor pipe. When the lock pin is driven into the projection, the convex portion is pushed outward, the tip of the anchor pipe is expanded, and the anchor pipe is fixed by biting into the inner surface of the pilot hole. In the resin injection method of injecting resin,
At the tip of the resin injector main body, a cylindrical nozzle formed narrower than the inner diameter of the anchor pipe is provided,
Extending the collar on the outside of the base end of the anchor pipe,
Between the flange and the tip of the resin injector, a packing is provided for sealing between the flange and the tip of the resin injector,
Put a collar between this packing and the tip of the resin injector,
A resin injecting method comprising adjusting the tip of the cylindrical nozzle to reach a depth just before the slit of the tip of the anchor pipe with this collar.
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| DE2602433C2 (en) * | 1976-01-23 | 1984-09-20 | Fischer, Artur, 7244 Waldachtal | Anchoring a fastener |
| JPS6023561A (en) * | 1983-07-15 | 1985-02-06 | 真砂産業株式会社 | Method and joint body for injecting correcting adhesive intoconcrete crack part |
| JPH0738568Y2 (en) * | 1990-09-21 | 1995-09-06 | 株式会社ケー・エフ・シー | Anchor pin for repairing outer wall of building |
| JPH08144539A (en) * | 1994-11-22 | 1996-06-04 | Maeda Corp | Filler injection pump device |
| JP3812948B2 (en) * | 1999-12-27 | 2006-08-23 | Ｄｇｐ・ホリ・コンダクター株式会社 | Injection nozzle, resin injector and pinning method |
| JP3525108B2 (en) * | 2000-12-19 | 2004-05-10 | 有限会社 岩清水産業 | Nozzle for concrete crack repair equipment |
| JP3540291B2 (en) * | 2001-05-31 | 2004-07-07 | 太洋技術開発株式会社 | Repair method and repair tool for concrete structure |
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