JP6584153B2 - How to embed inserts - Google Patents

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JP6584153B2
JP6584153B2 JP2015112171A JP2015112171A JP6584153B2 JP 6584153 B2 JP6584153 B2 JP 6584153B2 JP 2015112171 A JP2015112171 A JP 2015112171A JP 2015112171 A JP2015112171 A JP 2015112171A JP 6584153 B2 JP6584153 B2 JP 6584153B2
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insert
hole
mold
mounting jig
formwork
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JP2016223218A (en
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伸夫 岡▲崎▼
伸夫 岡▲崎▼
柘植 尚人
尚人 柘植
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Meidensha Corp
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Description

本発明は、コンクリート構造物に被固定部材を固定するインサートを該コンクリート構造物に埋設する方法に関する。   The present invention relates to a method for embedding an insert for fixing a member to be fixed to a concrete structure in the concrete structure.

周知のようにコンクリート構造物、例えばトンネルやボックスカルバートのコンクリート壁・天井などにはセラミック製のインサートが埋設され、該インサートに所望の被固定部材が締結されている。   As is well known, a ceramic insert is embedded in a concrete structure such as a concrete wall or ceiling of a tunnel or a box culvert, and a desired fixed member is fastened to the insert.

このインサートは、あらかじめコンクリート打設前に型枠の内側に取り付けられている。このとき一般的なインサートは、軸方向に形成された雌ねじ孔に固定用ボルトを螺入させて型枠に取り付けられている。   This insert is previously attached to the inside of the formwork before placing the concrete. At this time, a general insert is attached to the mold by screwing a fixing bolt into a female screw hole formed in the axial direction.

この作業工程を説明すれば、まず二人の作業員のうち一方が型枠の内側に入ってインサートを持って型枠の取付孔と前記雌ねじ孔の位置を合わせる。つぎに型枠の外側に居る他方の作業員が、取付孔を介して固定用ボルトを雌ねじ孔に螺入させてインサートを型枠に片持ち状に取り付ける。   Explaining this work process, first, one of the two workers enters the inside of the mold and holds the insert so that the mounting holes of the mold and the female screw holes are aligned. Next, the other worker on the outside of the mold allows the fixing bolt to be screwed into the female screw hole through the mounting hole and attaches the insert to the mold in a cantilevered manner.

その後に型枠内にコンクリートを打設し、コンクリート硬化後に固定用ボルトを取り外してインサートをコンクリートに埋設させる。ここで埋設されたインサートの雌ねじ孔には、例えば足場用の支持ボルトや天井の吊りボルトなどの被固定部材が締結される。   After that, the concrete is placed in the mold, and after the concrete is hardened, the fixing bolt is removed and the insert is embedded in the concrete. To-be-fixed members, such as scaffolding support bolts and ceiling suspension bolts, are fastened in the female screw holes of the embedded inserts.

ところが、従来の固定用ボルトを用いる場合には、施工時に必ず二人の作業員が必要なため、一人の作業員では施工できず、作業員の配置効率などに改善の余地があり、この点を改善すべく特許文献1のインサート提案されている。   However, when using conventional fixing bolts, two workers are required at the time of construction, so one worker cannot perform the construction, and there is room for improvement in worker placement efficiency. In order to improve this, an insert proposed in Patent Document 1 is proposed.

図6に基づき概略を説明すれば、インサート1は、雌ねじ孔2を有するインサート本体3と、雌ねじ孔2に連通する連通孔4a,4bが軸方向に形成されたスリーブ5a,5bとを備え、プラスチックホルダ(取付用治具)8により型枠6に着脱自在に取り付けられている。このプラスチックホルダ8は、一端部の雄ねじ部9と他端部のストッパー10とを備え、ストッパー10は弾性変形自在な一対のストッパー片10aを備えている。   If an outline is explained based on Drawing 6, insert 1 is provided with insert main part 3 which has female screw hole 2, and sleeves 5a and 5b in which communicating holes 4a and 4b communicating with female screw hole 2 were formed in the axial direction, A plastic holder (attachment jig) 8 is detachably attached to the mold 6. The plastic holder 8 includes a male screw portion 9 at one end and a stopper 10 at the other end, and the stopper 10 includes a pair of stopper pieces 10a that can be elastically deformed.

このインサート1の埋設方法としては、雄ねじ部9を連通孔4a,4bに通して雌ねじ孔2に螺入させた後にストッパー10を取付孔7に挿通する。このときストッパー片10aの先端部が型枠6の外面に当接し、プラスチックホルダ8の抜け止めとなってインサート1が型枠6に取り付けられる。その後に型枠6内にコンクリートを打設し、コンクリート乾燥後に工具によりプラスチックホルダ8を回転させて両者2,9の締結を緩め、プラスチックホルダ8を取り外す。   As a method for embedding the insert 1, the male screw portion 9 is inserted into the female screw hole 2 through the communication holes 4 a and 4 b, and then the stopper 10 is inserted into the mounting hole 7. At this time, the tip of the stopper piece 10 a comes into contact with the outer surface of the mold 6 to prevent the plastic holder 8 from coming off, and the insert 1 is attached to the mold 6. Thereafter, concrete is placed in the mold 6, and after drying the concrete, the plastic holder 8 is rotated with a tool to loosen the fastening between the two 2 and 9, and the plastic holder 8 is removed.

特開2003−27597JP 2003-27597 A

確かに前記埋設方法によれば、型枠6の内側からストッパー10を取付孔7に挿通すればよいので、作業員一人でインサート1を型枠6に取り付けることは可能である。   Certainly, according to the above-described embedding method, it is only necessary to insert the stopper 10 into the mounting hole 7 from the inside of the mold 6, so that it is possible for one worker to attach the insert 1 to the mold 6.

しかしながら、前記埋設方法は、プラスチックホルダ8を用いているため、型枠6の厚さがストッパー片10aとスリーブ5b間の距離よりも大きいと、インサート1を型枠に取り付けることができない。一方、型枠6の厚さが前記距離よりも小さいと、型枠6がぐらつき不安定となり易く、またコンクリートノロ(液状コンクリート)が連通孔4a,4bや雌ねじ孔2に侵入し、損傷を与えるおそれもある。   However, since the embedding method uses the plastic holder 8, if the thickness of the mold 6 is larger than the distance between the stopper piece 10a and the sleeve 5b, the insert 1 cannot be attached to the mold. On the other hand, if the thickness of the mold 6 is smaller than the above-mentioned distance, the mold 6 is likely to wobble and become unstable, and concrete noro (liquid concrete) enters the communication holes 4a and 4b and the female screw hole 2 to cause damage. There is also a fear.

そのため、型枠6にインサート1を取り付ける際は、雄ねじ部9の雌ねじ孔2に対する螺入量を増減させて前記距離を調整しなければならない。これでは作業工程が増加し、却って作業効率悪化の一因となるおそれがある。   Therefore, when the insert 1 is attached to the mold 6, the distance must be adjusted by increasing / decreasing the screwing amount of the male screw portion 9 into the female screw hole 2. This increases the number of work steps and may cause a decrease in work efficiency.

本発明は、このような問題を解決するためになされ、コンクリート構造物にインサートを埋設する際、取付用治具のインサートへの螺入量を調整することなく、作業員一人でインサートを型枠に取り付け可能とすることを解決課題としている。   The present invention has been made to solve such a problem, and when an insert is embedded in a concrete structure, the worker inserts the insert into the formwork alone without adjusting the screwing amount of the mounting jig into the insert. The problem to be solved is to make it possible to attach to the camera.

本発明は、コンクリート構造物に被固定部材を固定するインサートを、型枠と取付用治具とを用いてコンクリート構造物に埋設する方法であって、前記取付治具の一端側の外周に形成された雄ねじ部を前記インサートの雌ねじ部に螺入させる第1工程と、前記型枠に形成された取付孔に前記取付治具の他端側を圧入し、該他端側の外周を前記取付孔の内周に圧着させる第2工程と、前記型枠内へのコンクリート打設後に前記雄ねじ部を前記雌ねじ部から螺出させる第3工程と、を有することを特徴とする。   The present invention is a method of embedding an insert for fixing a member to be fixed to a concrete structure in a concrete structure using a mold and a mounting jig, and is formed on an outer periphery on one end side of the mounting jig. A first step of screwing the formed male screw portion into the female screw portion of the insert, and press-fitting the other end side of the attachment jig into an attachment hole formed in the mold, and attaching the outer periphery of the other end side to the attachment It has the 2nd process crimped | bonded to the inner periphery of a hole, and the 3rd process of screwing out the said external thread part from the said internal thread part after concrete placement in the said formwork, It is characterized by the above-mentioned.

前記第2工程の一態様としては、前記取付治具の他端側に形成された螺旋状のヒダ部を前記取付孔の内周に圧着させてもよい。また、前記第2工程の他の態様としては、前記ヒダ部の前記型枠を乗り越えた部分を前記型枠の外面にストッパーとして係止させてもよい。   As one aspect of the second step, a spiral fold formed on the other end side of the attachment jig may be crimped to the inner periphery of the attachment hole. Further, as another aspect of the second step, a portion of the fold portion that has climbed over the formwork may be engaged with an outer surface of the formwork as a stopper.

前記第3工程の一態様としては、前記ヒダ部を前記螺出の方向と反対方向に撓ませてもよい。また、前記第3工程の他の態様としては、前記取付治具の他端側の先端に形成された頭部を工具で回転させて、前記雌ねじ部から前記雄ねじ部を螺出させることができる。   As an aspect of the third step, the fold portion may be bent in a direction opposite to the screwing direction. As another aspect of the third step, the head formed at the tip of the other end of the mounting jig can be rotated with a tool, and the male screw can be screwed out from the female screw. .

本発明によれば、コンクリート構造物にインサートを埋設する際、取付用治具のインサートへの螺入量を調整することなく、作業員一人でインサートを型枠に取り付けることができる。   According to the present invention, when an insert is embedded in a concrete structure, the operator can attach the insert to the formwork alone without adjusting the screwing amount of the mounting jig into the insert.

本発明の実施形態に係るインサートの埋設方法において、取付用治具を用いてインサートを型枠に取り付けた状態を示す縦断面図。In the embedding method of the insert which concerns on embodiment of this invention, the longitudinal cross-sectional view which shows the state which attached the insert to the formwork using the jig for attachment. (a)は取付用治具の側面図、(b)は(a)のA−A断面図。(A) is a side view of the mounting jig, and (b) is a cross-sectional view taken along line AA of (a). (a)は同取付用治具をインサートに螺入させる作業工程を示す縦断面図、(b)は同取付用治具を装着したインサートを型枠(9mm厚)に取り付ける作業工程を示す縦断面図、(c)は(b)の作業工程が完了した状態を示す縦断面図、(d)はコンクリート打設後の同取付用治具とインサートと型枠との状態を示す縦断面図、(e)はソケットレンチで同取付用治具とインサートとの締結を緩める作業工程を示す一部縦断面図、(f)は同取付用治具が外れる状態を示す縦断面図。(A) is a longitudinal sectional view showing an operation process for screwing the mounting jig into the insert, and (b) is a longitudinal section showing an operation process for attaching the insert with the mounting jig to a mold (9 mm thick). (C) is a longitudinal sectional view showing a state in which the work process of (b) is completed, and (d) is a longitudinal sectional view showing a state of the mounting jig, the insert and the formwork after the concrete is placed. (E) is a partial longitudinal cross-sectional view which shows the operation | work process which loosens fastening with the attachment jig and insert with a socket wrench, (f) is a longitudinal cross-sectional view which shows the state from which the attachment jig is removed. 図3(c)のC部拡大図。The C section enlarged view of FIG.3 (c). (a)は同取付用治具をインサートに装着して12mm厚の型枠に取り付けた状態の縦断面図、(b)は同6mm厚の型枠に取り付けた状態の縦断面図。(A) is the longitudinal cross-sectional view of the state which attached the jig | tool for the attachment to an insert, and was attached to the 12 mm thick formwork, (b) is the longitudinal cross-sectional view of the state attached to the 6 mm thick formwork. 特許文献1のインサートの縦断面図。The longitudinal cross-sectional view of the insert of patent document 1. FIG.

以下、本発明の実施形態に係るインサートの埋設方法を説明する。このインサートは、例えば橋の橋脚などのコンクリート構造物に埋設され、足場用の支持ボルトなどの被固定部材をコンクリート構造物に固定するために用いられる。   Hereinafter, a method for embedding an insert according to an embodiment of the present invention will be described. This insert is embedded in a concrete structure such as a bridge pier, for example, and is used to fix a fixed member such as a support bolt for a scaffold to the concrete structure.

≪インサート,型枠、取付用治具≫
図1および図2に基づき前記埋設方法に用いる取付用治具,インサート,型枠を説明する。図1中の11は取付用治具を示し、12はセラミック製のインサートを示し、13は金属製の型枠を示している。
≪Insert, formwork, mounting jig≫
The mounting jig, insert, and formwork used in the burying method will be described with reference to FIGS. In FIG. 1, 11 indicates a mounting jig, 12 indicates a ceramic insert, and 13 indicates a metal mold.

インサート12は、雌ねじ穴15が形成された卵形のインサート本体14と、雌ねじ穴15に連通する連通孔16が軸方向に沿って形成された管状のスリーブ17と、スリーブ17の開口端部に接着などで固着された環状のシール部(例えばゴムシールなど)19とを有している。また、型枠13には、取付孔18が貫通形成され、取付孔18の内周縁にシール部19が圧接する。   The insert 12 includes an egg-shaped insert body 14 in which a female screw hole 15 is formed, a tubular sleeve 17 in which a communication hole 16 communicating with the female screw hole 15 is formed along the axial direction, and an open end of the sleeve 17. An annular seal portion (for example, a rubber seal) 19 fixed by bonding or the like is included. In addition, an attachment hole 18 is formed through the mold 13, and a seal portion 19 is pressed against the inner peripheral edge of the attachment hole 18.

取付用治具11は、略筒状に形成され、インサート12をコンクリート構造物に埋設する際、型枠13にインサート12を着脱自在に取り付けている。具体的には取付用治具11は、雌ねじ穴15に螺入する一端側の雄ねじ部20と、取付孔18に圧入される他端側の弾性変形可能なヒダ部21と、両者20,21間の中間部22と、前記他端側の先端に頭部として形成された六角部24とを有している。また、取付用治具11は、例えばナイロン系などの樹脂製が好ましく、靱性があり撓むものであれば、材料は特に限定されない。   The mounting jig 11 is formed in a substantially cylindrical shape, and when the insert 12 is embedded in a concrete structure, the insert 12 is detachably attached to the mold 13. Specifically, the mounting jig 11 includes a male screw portion 20 on one end side that is screwed into the female screw hole 15, an elastically deformable fold portion 21 on the other end side that is press-fitted into the mounting hole 18, and both 20, 21. An intermediate portion 22 between them and a hexagonal portion 24 formed as a head at the tip on the other end side. The mounting jig 11 is preferably made of, for example, a resin such as nylon, and the material is not particularly limited as long as it has toughness and bends.

ヒダ部21は、前記他端部側の外周面に雄ねじ部20と異なるピッチの螺旋状に形成され、周方向90度の位置にそれぞれ形成された各スリット25により4つのヒダ21a群に分割され、各ヒダ21aが撓み易くなっている。このヒダ21a群の長さは型枠13の厚さよりも大きく設定され、ヒダ21aが軸方向に沿って次々に配置されている。   The fold portion 21 is formed in a spiral shape with a different pitch from the male screw portion 20 on the outer peripheral surface on the other end side, and is divided into four fold 21a groups by respective slits 25 formed at positions of 90 degrees in the circumferential direction. Each fold 21a is easily bent. The length of the folds 21a is set larger than the thickness of the mold 13, and the folds 21a are arranged one after another along the axial direction.

この各ヒダ21aは、縦断面略三角形状に形成され、図2(a)(b)に示すように、圧入方向P側を傾斜面としたテーパが施され、弾性変形により圧入方向Pと反対方向に撓み易くなっている。なお、中間部22のヒダ21a群側の外周にはシール部19に内接する一対の環状突出部23が形成されている一方、六角部24はソケットレンチSのレンチ部Lに嵌合可能となっている。   Each of the folds 21a is formed in a substantially triangular shape in longitudinal section, and as shown in FIGS. 2 (a) and 2 (b), is tapered with an inclined surface on the press-fitting direction P side, and is opposite to the press-fitting direction P by elastic deformation. It is easy to bend in the direction. A pair of annular protrusions 23 inscribed in the seal portion 19 is formed on the outer periphery of the intermediate portion 22 on the fold 21a group side, while the hexagonal portion 24 can be fitted to the wrench portion L of the socket wrench S. ing.

≪前記埋設方法の作業工程≫
図3および図4に基づき前記埋設方法の作業工程を説明する。ここでは一例として型枠13に埋設型枠(コンクリートと一体として取り外されない型枠)を使用し、ボックスカルバートなどのコンクリート構造物を製作する際の埋設方法について説明する。
≪Work process of the burying method≫
The working process of the burying method will be described with reference to FIGS. Here, as an example, an embedding method when a concrete structure such as a box culvert is manufactured using an embedding formwork (a formwork that is not removed integrally with concrete) as the formwork 13 will be described.

この場合にインサート12は、次の作業工程(1)〜(4)を経てコンクリート27に埋設される。なお、図3および図4の取付例では、9mm厚の型枠13が用いられているものとする。   In this case, the insert 12 is embedded in the concrete 27 through the following work steps (1) to (4). In addition, in the example of attachment of FIG. 3 and FIG. 4, the 9-mm-thick formwork 13 shall be used.

(1)型枠13の内側において取付用治具11をインサート12に装着する。この装着に際しては、図3(a)に示すように、スリーブ17の連通孔16に取付用治具11の雄ねじ部20を対向させる。   (1) The mounting jig 11 is attached to the insert 12 inside the mold 13. At the time of mounting, as shown in FIG. 3A, the male threaded portion 20 of the mounting jig 11 is opposed to the communication hole 16 of the sleeve 17.

この状態のまま取付用治具11の雄ねじ部20を連通孔16に挿通し、その後に取付用治具11を矢印X方向に回転させて、雄ねじ部20を雌ねじ穴15に螺入させる。これにより雄ねじ部20が雌ねじ穴15に締結され、取付用治具11がインサート本体14に固定される。   In this state, the male screw portion 20 of the mounting jig 11 is inserted into the communication hole 16, and then the mounting jig 11 is rotated in the direction of the arrow X so that the male screw portion 20 is screwed into the female screw hole 15. As a result, the male screw portion 20 is fastened to the female screw hole 15, and the mounting jig 11 is fixed to the insert body 14.

(2)取付治具11を装着したインサート12を型枠13に取り付ける。この取り付けに際しては、図3(b)に示すように、取付用治具11の六角部24を型枠13の取付孔18に対向させる。   (2) The insert 12 on which the mounting jig 11 is mounted is mounted on the mold 13. At the time of this attachment, as shown in FIG. 3B, the hexagonal portion 24 of the attachment jig 11 is opposed to the attachment hole 18 of the mold 13.

この状態のままインサート12を矢印Y方向に回転させてヒダ部21の形成された取付用治具11の他端側を取付孔18にねじ込む。このとき取付用治具11の他端側の外径は取付孔18の内径よりも若干大きいものの、弾性変形により各ヒダ21aが圧入方向Pと反対方向に撓むため、取付孔18に簡単にねじ込むことができる。この作業工程により、図3(c)に示すように、ヒダ部21の形成された他端側が取付孔18に圧入され、六角部24が取付孔18から型枠13の外側に露呈する。   In this state, the insert 12 is rotated in the direction of arrow Y, and the other end of the mounting jig 11 on which the fold portion 21 is formed is screwed into the mounting hole 18. At this time, the outer diameter on the other end side of the mounting jig 11 is slightly larger than the inner diameter of the mounting hole 18, but each fold 21 a bends in the direction opposite to the press-fitting direction P due to elastic deformation. Can be screwed in. By this work process, as shown in FIG. 3C, the other end side where the fold portion 21 is formed is press-fitted into the attachment hole 18, and the hexagonal portion 24 is exposed from the attachment hole 18 to the outside of the mold 13.

図4に基づき前記圧入後の状態を説明する。図4のヒダ21a群中、環状突出部23側の最上段〜第4段のヒダ21aは取付孔18内に配置されている。このうち第2段〜第4段のヒダ21aは取付孔18の内周面に圧接し、取付用治具11の圧入方向Pの反対方向(インサート12側の方向)への引き抜きに対する抵抗を生じさせている。   The state after the press-fitting will be described with reference to FIG. In the group of folds 21 a in FIG. 4, the uppermost to fourth folds 21 a on the annular projecting portion 23 side are arranged in the mounting hole 18. Of these, the second to fourth folds 21a are in pressure contact with the inner peripheral surface of the mounting hole 18 and produce resistance to pulling the mounting jig 11 in the direction opposite to the press-fitting direction P (the direction toward the insert 12). I am letting.

また、第5段のヒダ21aは、型枠13を乗り越えて同方向への抜け止め用ストッパーとして型枠13の外面に係止している。このときヒダ部21はスリット25で分割されているため、ヒダ21aの単位で容易に型枠13を乗り越えて係止することができる。   Further, the fifth stage folds 21a get over the formwork 13 and are locked to the outer surface of the formwork 13 as stoppers for preventing them from coming off in the same direction. At this time, since the fold portion 21 is divided by the slit 25, the fold portion 21a can easily get over the frame 13 and be locked.

ただし、図4では第5段のヒダ21aが係止しているものの、規格や寸法誤差などで型枠13の厚さが相違する場合、あるいは取付用治具11に寸法誤差などがある場合には、他の位置のヒダ21aが係止する。このときヒダ部21は螺旋状なため、いずれかのヒダ21a群のヒダ21aが係止することとなる。   However, in FIG. 4, although the fifth stage fold 21a is locked, when the thickness of the mold 13 is different due to a standard or a dimensional error, or when there is a dimensional error in the mounting jig 11. The other folds 21a are locked. At this time, since the fold portion 21 is spiral, the fold 21a of any fold 21a group is locked.

図5に基づき一例を説明する。まず、図5(a)に基づき12mm厚の型枠13に取付用治具11を取り付けた場合を説明する。ここでは図5(a)のF側に表されたヒダ21a群の前記圧入後の状態を説明する。この場合には環状突出部23側の最上段〜第5段のヒダ21aが取付孔18の内周面に圧着する一方、第6段のヒダ21aがストッパーとして型枠13の外面に係止している。   An example will be described with reference to FIG. First, the case where the attachment jig 11 is attached to the 12 mm-thick mold 13 will be described with reference to FIG. Here, the state after the press-fitting of the fold 21a group shown on the F side in FIG. In this case, the uppermost to fifth folds 21a on the annular protrusion 23 side are crimped to the inner peripheral surface of the mounting hole 18, while the sixth fold 21a is locked to the outer surface of the mold 13 as a stopper. ing.

つぎに図5(b)に基づき6mm厚の型枠13に取付用治具11を取り付けた場合を説明する。ここでは図5(b)中のF側に表されたヒダ21a群の前記圧入後の状態を説明する。この場合には環状突出部23側の最上段および第2段のヒダ21aが取付孔18の内周面に圧着する一方、第3段のヒダ21aがストッパーとして型枠13の外面に係止している。   Next, a case where the mounting jig 11 is attached to the 6 mm thick mold 13 will be described with reference to FIG. Here, the state after the press-fitting of the fold 21a group shown on the F side in FIG. 5B will be described. In this case, the uppermost and second folds 21a on the annular projecting portion 23 side are pressed against the inner peripheral surface of the mounting hole 18, while the third fold 21a is locked to the outer surface of the mold 13 as a stopper. ing.

そうすると、特許文献1のように雄ねじ部20の螺入量を調整することなく、インサート12を回転させてヒダ部21の形成された他端側を取付孔18にねじ込むだけで型枠13に取り付けることができる。   Then, without adjusting the screwing amount of the male screw portion 20 as in Patent Document 1, the insert 12 is rotated and the other end side on which the fold portion 21 is formed is screwed into the mounting hole 18 and attached to the mold 13. be able to.

したがって、一人の作業員でインサート12を型枠13に簡単に取り付けることができ、この点でインサート12の埋設作業の作業工程が簡素化され、作業効率が改善される。また、型枠13への取付後は、両環状突出部23がシール部19に内接して支持するため、インサート12の姿勢が安定する。   Therefore, the insert 12 can be easily attached to the mold 13 by one worker, and in this respect, the work process of the burying work of the insert 12 is simplified, and the work efficiency is improved. Moreover, since both annular protrusions 23 are inscribed and supported by the seal portion 19 after being attached to the mold 13, the posture of the insert 12 is stabilized.

(3)図3(d)に示すように、型枠13の内側にコンクリート27を流し込んでコンクリート打設する。ここで連通孔16および雌ねじ穴15は、シール部19にシールされ、さらに両環状突出部23がシール部19に内接して二重にシールされている。この点でコンクリートノロ(液状コンクリート)の侵入を確実に阻止でき、両者15,16の損傷が防止されている。   (3) As shown in FIG. 3 (d), the concrete 27 is poured into the inside of the mold 13 and placed. Here, the communication hole 16 and the female screw hole 15 are sealed by the seal portion 19, and the both annular protrusions 23 are inscribed in the seal portion 19 and are double-sealed. In this respect, the intrusion of concrete paste (liquid concrete) can be reliably prevented, and damage to both 15 and 16 is prevented.

(4)コンクリート27の乾燥後は、型枠13の外側において取付用治具11を取り外す作業を行う。すなわち、六角部24にソケットレンチSのレンチ部Lの先端を嵌合させ、ソケットレンチSを図3(e)の矢印Z方向に回転させる。   (4) After the concrete 27 is dried, the work for removing the mounting jig 11 is performed outside the mold 13. That is, the tip of the wrench portion L of the socket wrench S is fitted to the hexagonal portion 24, and the socket wrench S is rotated in the direction of arrow Z in FIG.

これにより図3(f)に示すように、雄ねじ部20が雌ねじ穴15から螺出し、型枠13を残したまま取付用治具11が矢印P´方向(圧入方向Pと同方向)に取り外され、その結果、インサート12がコンクリート27に埋設される。   As a result, as shown in FIG. 3 (f), the male threaded portion 20 is screwed out from the female threaded hole 15, and the mounting jig 11 is removed in the direction of the arrow P '(the same direction as the press-fitting direction P) with the mold 13 remaining. As a result, the insert 12 is embedded in the concrete 27.

このとき取付孔18の内周面に圧接するヒダ21aは、弾性変形により矢印P´方向と反対方向に撓むため、P´方向への引き抜きに抵抗が少なく、簡単に取付用治具11を取り外すことができる。ここで取り外された使用済みの取付用治具11は、再利用することができる。   At this time, the fold 21a that is in pressure contact with the inner peripheral surface of the mounting hole 18 bends in the direction opposite to the arrow P ′ direction due to elastic deformation, so that there is little resistance to pulling in the P ′ direction, and the mounting jig 11 can be easily attached. Can be removed. The used mounting jig 11 removed here can be reused.

その後、コンクリート27に埋設されたインサート12の雌ねじ穴15に足場ボルトなどの被固定部材が締結され、これにより被固定部材がコンクリート27に固定される。   Thereafter, a fixed member such as a scaffold bolt is fastened to the female screw hole 15 of the insert 12 embedded in the concrete 27, and thereby the fixed member is fixed to the concrete 27.

なお、本発明は、上記実施形態に限定されることはなく、各請求項に記載された範囲内で変形して実施することができる。例えば前記埋設方法は、埋設型枠の使用に限定されず、コンクリート27から取り外す通常の型枠も使用することができる。この場合にはコンクリート27の打設後にソケットレンチSを用いて取付用治具11をインサート12から取り外し、その後に型枠13を外せばよい。   In addition, this invention is not limited to the said embodiment, It can deform | transform and implement within the range described in each claim. For example, the burying method is not limited to the use of the buried form, and a normal form removed from the concrete 27 can also be used. In this case, it is only necessary to remove the mounting jig 11 from the insert 12 using the socket wrench S after placing the concrete 27 and then remove the mold 13.

また、ヒダ部21はスリット25で分割することなく、螺旋状に巻回して形成してもよい。この場合、ヒダ部21はスリット25が無いため、取付孔18の縁に当たってストレスが加わるものの、型枠13を乗り越えた部分が抜け止め用ストッパーとして型枠13の外面に係止することができる。   Further, the fold portion 21 may be formed by being spirally wound without being divided by the slit 25. In this case, since the fold portion 21 does not have the slit 25, stress is applied to the edge of the mounting hole 18, but the portion over the mold 13 can be locked to the outer surface of the mold 13 as a stopper for retaining.

11…インサートの取付用治具
12…インサート
13…型枠
14…インサート本体
15…雌ねじ穴(雌ねじ部)
16…連通孔
17…スリーブ
18…取付孔
19…シール部
20…雄ねじ部
21…ヒダ部(圧着手段)
21a…ヒダ
24…六角部(頭部)
27…コンクリート(コンクリート構造物)
S…ソケットレンチ(工具)
DESCRIPTION OF SYMBOLS 11 ... Jig for attachment 12 ... Insert 13 ... Formwork 14 ... Insert body 15 ... Female screw hole (female screw part)
16 ... Communication hole 17 ... Sleeve 18 ... Mounting hole 19 ... Seal part 20 ... Male thread part 21 ... Helding part (crimping means)
21a ... fold 24 ... hexagonal part (head)
27 ... Concrete (concrete structure)
S ... Socket wrench (tool)

Claims (6)

雌ねじ穴が形成されたインサート本体と、前記雌ねじ穴に連通する連通孔が形成されたスリーブと、該スリーブの開口端部に固着されたシール部と、
を備えたインサートを型枠と取付用治具とを用いてコンクリート構造物に埋設する方法であって、
前記取付治具の一端側の外周に形成された雄ねじ部を前記インサートの雌ねじに螺入させる第1工程と、
前記型枠に形成された取付孔に前記取付治具の他端側を圧入し、該他端側の外周を前記取付孔の内周に圧着させる第2工程と、
前記型枠内へのコンクリートの打設後、前記取付用治具の両端部間に形成された環状突出部が前記シール部に内接する第3工程と、
前記コンクリートの乾燥後に前記雄ねじ部を前記雌ねじから螺出させる第4工程と、
を有することを特徴とするインサートの埋設方法。
An insert body in which a female screw hole is formed; a sleeve in which a communication hole communicating with the female screw hole is formed; and a seal portion fixed to an open end of the sleeve;
A method for embedded in the concrete structure by using the formwork and mounting jig insert with a
A first step causes screwed a male screw portion formed on an outer periphery of one end side of the mounting jig with the female screw hole of the insert,
The other end of the mounting jig is pressed into the mounting hole formed in the mold, a second step of crimping the outer periphery of the other end side on the inner periphery of the mounting hole,
A third step in which an annular protrusion formed between both end portions of the mounting jig is inscribed in the seal portion after placing the concrete into the mold ;
A fourth step of screwing the male screw portion from the female screw hole after drying the concrete ;
A method of embedding an insert, comprising:
前記第2工程において、
前記取付治具の他端側に形成された螺旋状のヒダ部が、前記取付孔の内周に圧着することを特徴とする請求項1記載のインサートの埋設方法。
In the second step,
The helical fold portion formed at the other end of the mounting jig, burying method of the insert according to claim 1, wherein the crimping to the inner periphery of the mounting hole.
前記第2工程において、
前記ヒダ部の前記型枠を乗り越えた部分が、前記型枠の外面にストッパーとして係止することを特徴とする請求項2記載のインサートの埋設方法。
In the second step,
The insert embedding method according to claim 2, wherein a portion of the fold portion over the formwork is locked as a stopper to the outer surface of the formwork.
前記第工程において、
前記ヒダ部が前記螺出の方向と反対方向に撓むことを特徴とする請求項2または3のいずれか1項に記載のインサートの埋設方法。
In the fourth step,
The method for embedding an insert according to claim 2, wherein the fold portion is bent in a direction opposite to the screwing direction.
前記第工程において、
前記取付治具の他端側の先端に形成された頭部を工具により回転させて、前記雄ねじ部を前記雌ねじから螺出させる
ことを特徴とする請求項1〜4のいずれか1項に記載のインサートの埋設方法。
In the fourth step,
A head formed at the other end of the side front end of the mounting jig is rotated by the tool, any one of claims 1 to 4, the external thread portion and characterized in that out screw from the internal thread hole The method for embedding inserts as described in 1.
前記第4工程は、前記型枠を取り外すことなく実行されることを特徴とする請求項1〜5のいずれか1項に記載のインサートの埋設方法。  The method for embedding an insert according to any one of claims 1 to 5, wherein the fourth step is performed without removing the formwork.
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