JPS6053136B2 - Anchor device - Google Patents
Anchor deviceInfo
- Publication number
- JPS6053136B2 JPS6053136B2 JP16540181A JP16540181A JPS6053136B2 JP S6053136 B2 JPS6053136 B2 JP S6053136B2 JP 16540181 A JP16540181 A JP 16540181A JP 16540181 A JP16540181 A JP 16540181A JP S6053136 B2 JPS6053136 B2 JP S6053136B2
- Authority
- JP
- Japan
- Prior art keywords
- unbonded
- steel wire
- fixing body
- steel
- anchor device
- 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
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/80—Ground anchors
- E02D5/808—Ground anchors anchored by using exclusively a bonding material
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Description
【発明の詳細な説明】 この発明は除去式のアンカー装置に関するものである。[Detailed description of the invention] The present invention relates to a removable anchor device.
擁壁、山留壁等を支持するアースアンカー装置において
工事終了後撤去する除去式アンカー装置が種々開発提案
されている。その一つにアンボンドの緊張鋼材を、地盤
の削孔底に挿入した定着体の耐荷版に引掛けてＵ状に配
置しておき、削孔内を充填して緊張鋼材の両端を擁壁面
等に固定して使用し、撤去に際しては前記固定を外し、
緊張鋼材の一端を引張ることにより撤去する工法が知ら
れている。そして以上の工法でＵ状に配置するためシー
ス等を使用する場合は問題ないがＰＣ鋼より線とポリエ
チレンパイプの間にグリスを入れたアンボンドＰＣ鋼線
を複数本並列して使用する場合、アンボンドＰＣ鋼線が
接触すると摩擦抵抗によつて引抜きが困難となり、また
アンボンドＰＣ鋼線が弾発力によつて拡がる傾向にあつ
てアンボーンドＰＣ鋼線と耐荷板との間に隙間を生じ、
コンクリートを充填して定着体を定着する際その隙間に
コンクリートが入り、アンボンドＰＣ鋼線の引抜きを困
難とする要因になることがある。この発明は前記従来の
問題点を解決すべく開発したもので、以下その詳細を図
示した実施例によつて説明する。Various types of removable anchor devices that support retaining walls, mountain retaining walls, etc. are removed after completion of construction have been developed and proposed. One method is to place unbonded tension steel materials in a U-shape by hooking them onto the load-bearing plate of an anchor inserted into the bottom of a drilled hole in the ground. Use it by fixing it to the base, and when removing it, remove the fixation,
A construction method is known in which tension steel is removed by pulling one end of it. There is no problem when using a sheath etc. to arrange in a U-shape with the above construction method, but when using multiple unbonded PC steel wires in parallel with grease between the PC steel stranded wire and the polyethylene pipe, unbonded When the PC steel wires come into contact, it becomes difficult to pull them out due to frictional resistance, and the unbonded PC steel wires tend to spread due to the elastic force, creating a gap between the unbonded PC steel wires and the load-bearing plate.
When filling concrete and fixing the fixing body, concrete may enter the gap, making it difficult to pull out the unbonded PC steel wire. This invention was developed to solve the problems of the conventional art, and details thereof will be explained below with reference to illustrated embodiments.
図において、１は定着体、２はアンボンドＰＣ鋼線を示
す。定着体１は鋳鋼異形鉄筋、グラスファイバーコンク
リート等により形成され、基部の耐荷板３と・先端部４
との中間部は中空状とされ、中間に仕切板５、５が設け
てあり、また中間部表面には定着に際しての抵抗となる
突起６が形成してある。In the figure, 1 indicates a fixing body, and 2 indicates an unbonded PC steel wire. The anchoring body 1 is made of cast steel deformed reinforcing bars, glass fiber concrete, etc., and includes a load-bearing plate 3 at the base and a tip 4.
The middle part between the two is hollow, and partition plates 5, 5 are provided in the middle, and protrusions 6 are formed on the surface of the middle part to provide resistance during fixing.
耐荷板３には並列した湾曲状をなす凹溝７、７が形成さ
れ、少なくともその先端間には仕切壁８が突設状に形成
してある。基部側の仕切板５の中央には螺子孔９が形成
され、基部に押圧板１０を設けた螺杆１１が螺子孔９に
螺合されている。Parallel curved concave grooves 7, 7 are formed in the load-bearing plate 3, and a partition wall 8 is formed in a protruding manner at least between the tips thereof. A screw hole 9 is formed in the center of the partition plate 5 on the base side, and a screw rod 11 having a pressure plate 10 at the base is screwed into the screw hole 9.
したがつて押圧板１０は凹溝７、７に対向して進退自在
に設置されることになる。以上の凹溝７、７にアンボン
ドＰＣ鋼線２を引掛け、押圧板１０で押えることにより
、アンボンドＰＣ鋼線２の動きを規制する。Therefore, the press plate 10 is installed facing the grooves 7, 7 so as to be able to move forward and backward. The movement of the unbonded PC steel wire 2 is regulated by hooking the unbonded PC steel wire 2 into the grooves 7, 7 and pressing it with the pressing plate 10.
使用に際しては掘削孔Ａ内に定着体１、アンボンドＰＣ
鋼線２を挿入し、次いで掘削孔Ａ内にモルタルを加圧注
入し、定着体１を掘削孔Ａの底部に定着し、アンボンド
ＰＣ鋼線２の両端は捷壁Ｂ等に挿通し、均等に緊張して
グリップ１２等により固定する。When using, place anchor 1 and unbond PC in drilling hole A.
Insert the steel wire 2, then inject mortar under pressure into the excavation hole A, fix the fixing body 1 at the bottom of the excavation hole A, and insert both ends of the unbonded PC steel wire 2 into the break wall B, etc., evenly. tension and fix it with the grip 12 or the like.
撤去に際してはグリップ１２を外し、アンボンドＰＣ鋼
線２の何れか一端の側をジャッキに取付けて引抜く。For removal, remove the grip 12, attach one end of the unbonded PC steel wire 2 to a jack, and pull it out.
この発明は以上の構成からなり、定着体には仕切壁によ
つて区画された湾曲状の凹溝があり、複数のアンボンド
ＰＣ鋼線を相互に分離状態に配置してあるので引抜き時
に相互に影響することがない。This invention has the above-mentioned structure, and the fixing body has a curved groove partitioned by a partition wall, and a plurality of unbonded PC steel wires are arranged in a separated state from each other, so that they do not interact with each other when being pulled out. It has no effect.
またアンボンドＰＣ鋼線を規制する押圧板を設けたので
凹溝内の所定位置に確実にセットすることができ、引き
抜きを容易ならしめることができる。Furthermore, since a pressing plate is provided to restrict the unbonded PC steel wire, it can be reliably set at a predetermined position within the groove, and it can be easily pulled out.
第１図は地盤へ埋設状態の断面図、第２図は定着体の正
面図、第３図、第４図は定着体の断面図である。
１・・・・・・定着体、２・・・・・・アンボンドＰＣ
鋼線、３・・・耐荷板、４・・・・・・先端部、５・・
・・・・仕切板、６・・・・・・突起、７・・・・・・
凹溝、８・・・・・・仕切壁、９・・・・・・螺子孔、
１０・・・・・・押圧板、１１・・・・・・螺杆、１２
・・・・・・グリップ、Ａ・・・・・・掘削孔、Ｂ・・
・・・・擁壁。FIG. 1 is a cross-sectional view of the fixing body in a state buried in the ground, FIG. 2 is a front view of the fixing body, and FIGS. 3 and 4 are cross-sectional views of the fixing body. 1... Fixing body, 2... Unbonded PC
Steel wire, 3... Load-bearing plate, 4... Tip, 5...
...Partition plate, 6...Protrusion, 7...
Concave groove, 8...partition wall, 9...screw hole,
10...Press plate, 11...Screw rod, 12
...Grip, A...Drilling hole, B...
...Retaining wall.
Claims (1)
凹溝を形成し、かつその凹溝間に仕切壁を形成し、その
凹溝にアンボンドＰＣ鋼線を引掛け、かつアンボンドＰ
Ｃ鋼線を規制する押圧板を凹溝に対向して進退自在に設
置してあることを特徴とするアンカー装置。1 Form parallel curved concave grooves in the load-bearing plate formed on the fixing body, form a partition wall between the concave grooves, hook an unbonded PC steel wire in the concave groove, and unbond P
An anchor device characterized in that a pressing plate for regulating a C steel wire is installed facing a concave groove so as to be movable forward and backward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16540181A JPS6053136B2 (en) | 1981-10-16 | 1981-10-16 | Anchor device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16540181A JPS6053136B2 (en) | 1981-10-16 | 1981-10-16 | Anchor device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5865819A JPS5865819A (en) | 1983-04-19 |
| JPS6053136B2 true JPS6053136B2 (en) | 1985-11-22 |
Family
ID=15811701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16540181A Expired JPS6053136B2 (en) | 1981-10-16 | 1981-10-16 | Anchor device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6053136B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9214006D0 (en) * | 1992-07-01 | 1992-08-12 | Keller Ltd | Removable ground anchor |
| KR100818504B1 (en) | 2006-12-27 | 2008-03-31 | (주) 공인건설 | Tension soil nail and construction method of precast concrete panel using the same |
| US20140345220A1 (en) | 2013-05-24 | 2014-11-27 | Francesco Ferraiolo | Anchoring system for concrete panels in a stabilized earth structure |
-
1981
- 1981-10-16 JP JP16540181A patent/JPS6053136B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5865819A (en) | 1983-04-19 |
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