JPH0412768B2 - - Google Patents
Info
- Publication number
- JPH0412768B2 JPH0412768B2 JP61077938A JP7793886A JPH0412768B2 JP H0412768 B2 JPH0412768 B2 JP H0412768B2 JP 61077938 A JP61077938 A JP 61077938A JP 7793886 A JP7793886 A JP 7793886A JP H0412768 B2 JPH0412768 B2 JP H0412768B2
- Authority
- JP
- Japan
- Prior art keywords
- earth anchor
- excavation hole
- wire
- tip
- hole
- 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
Landscapes
- Piles And Underground Anchors (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、位置決め、固定を容易かつ確実に
行うことができるアースアンカーの設置方法に関
する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for installing an earth anchor that allows easy and reliable positioning and fixing.
従来、複数のPCストランド等により形成され
るアースアンカーの施工においては、予めアース
アンカー先端側にスペーサを取付けて、埋設後の
位置決め、固定を容易に行なえるようにしてあ
る。
Conventionally, when constructing an earth anchor formed of a plurality of PC strands, etc., a spacer is attached in advance to the tip side of the earth anchor to facilitate positioning and fixing after burying.
しかしながら、前記スペーサはその構造上埋設
される掘削孔の口径に合わせて取付けなければな
らないため、アースアンカー埋設後に掘削孔内壁
との間に〓間が生じてしまい、位置決め、固定が
正確に行えないという問題があつた。また、アー
スアンカー埋設時にスペーサが掘削孔内壁と接触
してしまい、スペーサに変形が生じたり、取付け
位置がずれたりして、掘削孔内の所定位置にスペ
ーサを配置することが困難であつた。 However, because the spacer has to be installed according to the diameter of the excavation hole in which it is buried due to its structure, a gap is created between the spacer and the inner wall of the excavation hole after burying the earth anchor, making it difficult to position and fix it accurately. There was a problem. Furthermore, when embedding the earth anchor, the spacer comes into contact with the inner wall of the excavation hole, causing deformation of the spacer or misalignment of the mounting position, making it difficult to arrange the spacer at a predetermined position within the excavation hole.
この発明は、前記従来の問題点に鑑み創案され
たもので、アースアンカーの埋設後にアースアン
カーと掘削孔内壁との間隔を正確かつ安全に保つ
ことができ、施工工程の短縮化、省力化を達成で
きるアースアンカーの設置方法を提供することを
目的とする。 This invention was devised in view of the above-mentioned conventional problems, and it is possible to accurately and safely maintain the distance between the earth anchor and the inner wall of the excavation hole after burying the earth anchor, thereby shortening the construction process and saving labor. The purpose is to provide a method of installing an earth anchor that can be achieved.
この発明のアースアンカーの設置方法は、アー
スアンカー埋設用掘削孔の先端定着部を自由長部
より大口径に掘削し、先端側の周囲に弾力性を有
する線材を一端と固定し、かつスパイラル状に巻
き付けて拘束したアースアンカーを前記掘削孔に
挿入した後、掘削孔の先端定着部内に位置する前
記線材の拘束を外して膨膨させる。
The method for installing the earth anchor of this invention is to excavate the tip fixing part of the earth anchor burying hole to a diameter larger than the free length part, fix an elastic wire rod around the tip side to one end, and form a spiral wire. After inserting the ground anchor wrapped around and restrained into the excavation hole, the wire located within the anchoring part at the tip of the excavation hole is unrestrained and expanded.
以下、この発明を図示する実施例に基いて説明
する。
The present invention will be explained below based on illustrated embodiments.
先ず第１図に示すようにアースアンカー設置予
定地盤に掘削孔４を掘削する。掘削孔４は、端部
定着部２口径を自由長部より大きく形成してお
く。 First, as shown in FIG. 1, an excavation hole 4 is drilled in the ground where the earth anchor is to be installed. The excavated hole 4 is formed so that the diameter of the fixed end portion 2 is larger than that of the free length portion.
次いで、第２図に示すように掘削孔４内にアー
スアンカー１を配置する。このアースアンカー１
は例えば４本のPCストランド５よりなり、その
下端には先端キヤツプ６が取付けられ、圧着グリ
ツプ７により各PCストランド５端部と連結され
ている。この圧着グリツプ７上には支圧板８が配
されており、支圧板８内を各PCストランド５が
貫通している。さらにこのアースアンカー１の定
着部２周囲にはコルゲートパイプ９が配設され、
このコルゲートパイプ９外周にはコルゲートパイ
プ９の溝に沿つて弾力性を有する線材１０が巻き
付けてある。 Next, as shown in FIG. 2, the earth anchor 1 is placed in the excavated hole 4. This earth anchor 1
consists of, for example, four PC strands 5, each of which has a tip cap 6 attached to its lower end and is connected to the end of each PC strand 5 by a crimp grip 7. A pressure plate 8 is disposed on the pressure grip 7, and each PC strand 5 passes through the pressure plate 8. Furthermore, a corrugated pipe 9 is arranged around the anchoring part 2 of this earth anchor 1,
An elastic wire 10 is wound around the outer circumference of the corrugated pipe 9 along the groove of the corrugated pipe 9.
第３図に示すように線材１０は、スパイラル状
に巻かれた鋼線からなり、一端は溶接等によりコ
ルゲートパイプ９側に固定され、他端はステツキ
状のストツパー１１により固定支持されて拘束さ
れている。なお、ストツパー１１の下端部は、コ
ルゲートパイプ９内に嵌入、支持され、上端部に
はロープ１２が締結されている。 As shown in FIG. 3, the wire rod 10 is made of a steel wire wound in a spiral shape, and one end is fixed to the corrugated pipe 9 side by welding or the like, and the other end is fixedly supported and restrained by a stick-like stopper 11. ing. The lower end of the stopper 11 is fitted into and supported by the corrugated pipe 9, and the rope 12 is fastened to the upper end.
掘削孔４内の所定位置にアースアンカー１を挿
入した後、定着部２に設けられた線材１０の拘束
を外して膨脹させる。この実施例では前記ロープ
１２を上方より引張つてストツパー１１をコルゲ
ートパイプ９より抜き出すことによりスパイラル
状に巻かれている線材の端部が開放され、掘削孔
４内壁に拡がる。 After the earth anchor 1 is inserted into a predetermined position in the excavated hole 4, the wire rod 10 provided in the fixing part 2 is released from the restraint and expanded. In this embodiment, by pulling the rope 12 from above and pulling out the stopper 11 from the corrugated pipe 9, the end of the spirally wound wire is opened and spread to the inner wall of the excavation hole 4.
以上の作業の後、掘削孔４内にコンクリート等
を打設する。 After the above operations, concrete or the like is poured into the excavated hole 4.
以上述べた施工順序により、アースアンカー１
は掘削孔４内に定着される。 According to the construction order described above, earth anchor 1
is fixed in the borehole 4.
この発明は以上の構成からなり、この発明によ
ればアースアンカーの施工に際しアースアンカー
の挿入後スパイラル状の鋼線を膨脹させることに
よりアースアンカー定着部と掘削孔内壁との間隔
を正確にしかも完全に保つことができるので、工
期の短縮化、施工の省力化を達成することができ
る。
The present invention has the above-mentioned configuration. According to the present invention, when constructing the earth anchor, the distance between the earth anchor fixing part and the inner wall of the excavation hole is accurately and completely set by expanding the spiral steel wire after inserting the earth anchor. This can shorten the construction period and save labor during construction.
第１図〜第４図（第３図を除く）はこの発明の
一実施例を示す断面図、第３図は第２図の要部拡
大図である。
１……アースアンカー、２……アースアンカー
定着部、３……アースアンカー自由長部、４……
掘削孔、５……PCストランド、６……先端キヤ
ツプ、７……圧着グリツプ、８……支圧板、９…
…コルゲートパイプ、１０……線材、１１……ス
トツパー、１２……ロープ。
1 to 4 (excluding FIG. 3) are sectional views showing one embodiment of the present invention, and FIG. 3 is an enlarged view of the main part of FIG. 2. 1...Earth anchor, 2...Earth anchor fixing part, 3...Earth anchor free length part, 4...
Drill hole, 5...PC strand, 6...Tip cap, 7...Crimp grip, 8...Bearing plate, 9...
...Corrugate pipe, 10...Wire rod, 11...Stopper, 12...Rope.
Claims (1)
自由長部より大口径に掘削し、先端側の周囲に弾
力性を有する線材を一端と固定し、かつスパイラ
ル状に巻き付けて拘束したアースアンカーを前記
掘削孔に挿入した後、掘削孔の先端定着部内に位
置する前記線材の拘束を外して膨脹させることを
特徴とするアースアンカーの設置方法。1. The tip anchoring part of the earth anchor burying excavation hole is excavated to a diameter larger than the free length part, an elastic wire is fixed to one end around the tip side, and the earth anchor is restrained by being wound in a spiral shape. 1. A method for installing an earth anchor, which comprises inserting the wire rod into an excavation hole, and then releasing the restraint of the wire located within the anchoring part at the tip of the excavation hole to allow the wire to expand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7793886A JPS62236919A (en) | 1986-04-04 | 1986-04-04 | Method of setting earth anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7793886A JPS62236919A (en) | 1986-04-04 | 1986-04-04 | Method of setting earth anchor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62236919A JPS62236919A (en) | 1987-10-17 |
| JPH0412768B2 true JPH0412768B2 (en) | 1992-03-05 |
Family
ID=13648009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7793886A Granted JPS62236919A (en) | 1986-04-04 | 1986-04-04 | Method of setting earth anchor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62236919A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0489125U (en) * | 1990-12-07 | 1992-08-04 | ||
| JPH0733661B2 (en) * | 1990-12-14 | 1995-04-12 | 建設基礎エンジニアリング株式会社 | anchor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58189410A (en) * | 1982-04-26 | 1983-11-05 | Takenaka Komuten Co Ltd | Forcibly controlled injection work |
-
1986
- 1986-04-04 JP JP7793886A patent/JPS62236919A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62236919A (en) | 1987-10-17 |
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