JPS61191721A - Method of forming earth anchor - Google Patents

Method of forming earth anchor

Info

Publication number
JPS61191721A
JPS61191721A JP2877285A JP2877285A JPS61191721A JP S61191721 A JPS61191721 A JP S61191721A JP 2877285 A JP2877285 A JP 2877285A JP 2877285 A JP2877285 A JP 2877285A JP S61191721 A JPS61191721 A JP S61191721A
Authority
JP
Japan
Prior art keywords
core pipe
grout
bit
apex
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.)
Granted
Application number
JP2877285A
Other languages
Japanese (ja)
Other versions
JPH0558084B2 (en
Inventor
Keizo Fujiwara
恵三 藤原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HIROSE KOZAI SANGYO KK
Original Assignee
HIROSE KOZAI SANGYO KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by HIROSE KOZAI SANGYO KK filed Critical HIROSE KOZAI SANGYO KK
Priority to JP2877285A priority Critical patent/JPS61191721A/en
Publication of JPS61191721A publication Critical patent/JPS61191721A/en
Publication of JPH0558084B2 publication Critical patent/JPH0558084B2/ja
Granted legal-status Critical Current

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)

Abstract

PURPOSE:To eliminate the need to pull off a core pipe, by a method wherein a gap between a front hole, formed by means of an apex bit having a flange part, and the core pipe is filled with grout through a hole being open toward a position above the flange part. CONSTITUTION:An apex bit 2 is secured to the apex of a core pipe 1, and the apex bit 2 is provided with a flange part 4, protruded sideward, and a space 3. The space 3 is communicated with the core pipe 1, and an opening 5 open toward the upper part is formed in the flange part 4. The core pipe 1, to which the apex bit 2 is secured, is driven into a ground G by hammering and rotation, and simultaneously the interior of the core pipe 1 is filled with grout 9. The grout 9 flows through the space 3 and the hole 5, and a gap between an excavated hole 7, formed by the apex bit 2, and the core pipe 1 is filled with the grout 9. This causes the grout 9 to be poured simultaneously with hammering of the core pipe 1, resulting in improvement of construction efficiency, and the core pipe 1 is used as a reinforcing bar, and this eliminates pulling off process of the pipe.

Description

【発明の詳細な説明】 （゛産業上の利用分野） 本発明は地盤にアースアンカーを施工するアースアンカ
ーの施工方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for constructing an earth anchor in the ground.

（従来の技術） 従来においてグラウト注入を伴うアースアンカーの施工
方法は種々公知であるが、通常地盤をまず掘削した後そ
の孔に芯材を押入すると共にグラクトを注入するもので
めった。(Prior Art) Various methods of constructing earth anchors that involve grout injection are known, but the conventional method is to first excavate the ground, then push a core material into the hole and then inject grout.

しかしこの、方法では工程が掘削とグラウト注入の２段
階となるため施工能率が悪かった。However, this method had poor construction efficiency because it involved two steps: excavation and grout injection.

（発明が解決しようとする問題点） 本発明は以上の従来の問題を解決し施工能率が非常によ
いアースアンカーの施工方法の提供を目的とする。(Problems to be Solved by the Invention) The present invention aims to solve the above-mentioned conventional problems and provide a method for constructing an earth anchor with very high construction efficiency.

（実施例） 以下本発明のアースアンカーの施工方法（以下本発明の
施工方法という）を図面に示す実施例に従い脱明する。(Example) The construction method of the earth anchor of the present invention (hereinafter referred to as the construction method of the present invention) will be explained below according to the example shown in the drawings.

第１図は本発明の施工方法を示し、該施工方法は鋼管等
から作られた芯パイプ＋１１を用いる。FIG. 1 shows the construction method of the present invention, which uses a core pipe +11 made of a steel pipe or the like.

該芯パイプ＋１）の先端には先端ビット（２）が固定さ
れ、該先端ピッ）　＋２１は側方に突出する鍔部（４）
を有する。A tip bit (2) is fixed to the tip of the core pipe +1), and the tip bit (21) is a flange (4) that projects laterally.
has.

又先端ピッ）　＋ｚ＋　ｒには突所（３）が設けられ、
該突所（３）は１ｉｆｆ記芯パイプ（１）に連通ずる。Also, a protrusion (3) is provided at the tip (pitch) +z+r,
The protrusion (3) communicates with the 1iff centering pipe (1).

一方前記鍔部（４）には上方に開口する孔Ｉｓ）が設け
られ、該孔（５）は前記空所（３）に連通ずる。On the other hand, the flange (4) is provided with a hole Is) that opens upward, and the hole (5) communicates with the cavity (3).

以上の先端ビット（２）が固定された芯パイプ＋１）は
打込装置（図示せず）により打撃、回転等が与えられて
地盤Ｇ中に打ち込まれる。The core pipe +1) to which the tip bit (2) is fixed is driven into the ground G by being hit, rotated, etc. by a driving device (not shown).

この打ち込みと同時に芯パイプＩｌｌ内にグラウト（９
）が注入される。At the same time as this driving, grout (9
) is injected.

グラウト（９）は芯パイプ（１）から先端ビット（２）
の突所（３）及び孔（６）を通って先端ビット（２）に
より形成された削孔（７）内に流れ込む。Grout (9) goes from core pipe (1) to tip bit (2)
It flows through the protrusion (3) and hole (6) into the borehole (7) formed by the tip bit (2).

すなわち先端ビット（２）により形成されていく削孔（
７）と芯パイプ（１）の間の隙間にグラウト（９）が同
時に充填されていくのである。In other words, the hole formed by the tip bit (2) (
7) and the core pipe (1) are filled with grout (9) at the same time.

ここでグラウト（９）が地盤Ｇ上にあふれない様にする
ため図示の実施例では削孔（７）の上端開口にカバー（
８）が装着されている。In order to prevent the grout (9) from overflowing onto the ground G, in the illustrated embodiment, a cover (
8) is installed.

芯パイプ１１１が所定深さまで打ち込まれた伏悪で芯パ
イプ１１１及び先端ビット（２）はそのまま地盤Ｇ中に
残される。When the core pipe 111 is driven to a predetermined depth, the core pipe 111 and the tip bit (2) are left in the ground G as they are.

この結果グラウト（９）は芯パイプ＋１１を補強筋とし
て硬化し第２図又は第３図に示す様なアースアンカーＡ
となる。As a result, the grout (9) is hardened using the core pipe +11 as a reinforcing bar, and the earth anchor A as shown in Fig. 2 or 3 is formed.
becomes.

第４図は本発明の施工方法を実施する之めの打込装置の
一例を示し、該打込装置゛（１１）は芯パイプｉｌｌに
打撃、回転等を与えるハンマー（１５）が装着された本
体（１′４を有する。FIG. 4 shows an example of a driving device for carrying out the construction method of the present invention, and the driving device (11) is equipped with a hammer (15) that applies impact, rotation, etc. to the core pipe ill. The main body (having 1'4).

該本体（１乃はシリンダー（１４）により任意の角度に
傾斜可能にされる。The main body (1 to 1) can be tilted at any angle by the cylinder (14).

又芯パイプｔｌ）はホース（６）により注入ポンプ（１
６）に接続され、該注入ポンプ（１呻はミキサー（１″
６内のグラウトを送り出すものである。In addition, the core pipe tl) is connected to the injection pump (1) by the hose (6).
6), the infusion pump (1'' is connected to the mixer (1''
This is to send out the grout in 6.

第５図は本発明の施工方法に用いる他の芯パイプ及び先
端ビットを示し、これらは第１図のものと比較して次の
特徴を有する。FIG. 5 shows another core pipe and tip bit used in the construction method of the present invention, which have the following features compared to those in FIG.

すなわちグラウト（９）注入用の孔（６）は芯パイプ＋
１＋の先端近くの周壁（先端ビット（２）付近）に設け
られている。In other words, the hole (6) for grout (9) injection is the core pipe +
It is provided on the peripheral wall near the tip of the 1+ (near the tip bit (2)).

更に先端ビット（２）の頂部は多重に山が形成され、又
芯パイプ１１）の外周面には鍔材（２鋳（図示のものは
棒材がら線状に巻き付けられている）が付着されている
。Furthermore, the top of the tip bit (2) is formed with multiple ridges, and a flange material (2 castings (the one shown is a bar material wrapped in a linear shape) is attached to the outer peripheral surface of the core pipe 11). ing.

鍔材（イ）は削孔（７）内におけるグラウト（９）の軸
方向の動きを拘束して膨張性セメント等を含有する膨張
性のグラウト（９）を用いる場合における該グラウト（
９）の地盤Ｇへの浸透圧力を向上させるものである。The flange material (a) restrains the axial movement of the grout (9) in the drilled hole (7) and is used to prevent the grout (9) from moving in the axial direction when using the expandable grout (9) containing expandable cement or the like.
9) to improve the penetration pressure into the ground G.

第６図は本発明の施工方法に用いる他の芯パイプを示し
、これは第５図のものと比較して形状の異なる鍔材（２
（至）をその外周面に有する。FIG. 6 shows another core pipe used in the construction method of the present invention, which has a flange material (2
(to) on its outer peripheral surface.

更ニ芯パイプ＋１１はカップラーｆｌ＋（ねじが切られ
ている）により複数本継いで用いられている。A plurality of double-core pipes +11 are connected by a coupler fl+ (threaded).

（発明の効果） 本発明のアースアンカーの施工方法の実施例は以上の通
りでありその効果を次に列記する。(Effects of the Invention) The embodiments of the earth anchor construction method of the present invention are as described above, and the effects thereof are listed below.

（１）本発明の施工力法は特許請求の範囲に記載した構
成であり、特に芯パイプを打ち込むと同時にグラウトを
注入するため工程が１回ですみ施工能率が非常によい。(1) The construction force method of the present invention has the configuration described in the claims, and in particular, since the grout is injected at the same time as the core pipe is driven, the construction efficiency is very high because only one step is required.

（２）　　本発明の施工方法は同上の構成であり、特に
芯パイプ自体を補強筋とするため引き抜く手間が全くい
らない。(2) The construction method of the present invention has the same configuration as above, and in particular, since the core pipe itself is used as a reinforcing bar, there is no need for any effort to pull it out.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の施工方法を示す縦断面図第２図及び第
３図は同上施工されたアースアンカーの縦断面図 第４図は同上施工方法を実施するための打込装置の一例
を示す側面図 第５図は同上施工方法に、用いる他の芯パイプ及び先端
ビットを示す一部切り欠き正面図 第６図は同上施工方法に用いる他の芯パイプを示す一部
切り欠き正面図FIG. 1 is a vertical cross-sectional view showing the construction method of the present invention. FIGS. 2 and 3 are vertical cross-sectional views of the earth anchor installed as above. FIG. 4 is an example of a driving device for carrying out the above construction method. Fig. 5 is a partially cutaway front view showing another core pipe and tip bit used in the same construction method; Fig. 6 is a partially cutaway front view showing another core pipe used in the same construction method.

Claims (1)

【特許請求の範囲】[Claims] １、側方に突出した鍔部を有する先端ビットがその先端
に固定され該先端ビット又はその付近に孔が設けられた
芯パイプを地盤中に打ち込み、これと同時にグラウトを
芯パイプから前記孔を経て先端ビットにより形成された
削孔に注入し、その後芯パイプをそのまま残し補強筋と
してグラウトを硬化させるアースアンカーの施工方法1. A core pipe with a tip bit having a side protruding flange fixed to its tip and a hole provided at or near the tip bit is driven into the ground, and at the same time, grout is poured from the core pipe through the hole. An earth anchor construction method in which the grout is injected into the hole formed by the tip bit, and then the core pipe is left as is and the grout is hardened as a reinforcing bar.
JP2877285A 1985-02-16 1985-02-16 Method of forming earth anchor Granted JPS61191721A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2877285A JPS61191721A (en) 1985-02-16 1985-02-16 Method of forming earth anchor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2877285A JPS61191721A (en) 1985-02-16 1985-02-16 Method of forming earth anchor

Publications (2)

Publication Number Publication Date
JPS61191721A true JPS61191721A (en) 1986-08-26
JPH0558084B2 JPH0558084B2 (en) 1993-08-25

Family

ID=12257698

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2877285A Granted JPS61191721A (en) 1985-02-16 1985-02-16 Method of forming earth anchor

Country Status (1)

Country Link
JP (1) JPS61191721A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0190837U (en) * 1987-12-03 1989-06-14
JPH028413A (en) * 1988-01-21 1990-01-11 Hirose & Co Ltd Execution method of reinforced earth pile
KR100498536B1 (en) * 2002-11-28 2005-07-01 주식회사 제일종합통상 Method for costructing anchors under the ground using high pressure grouting

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4877607A (en) * 1972-01-20 1973-10-18
US3852971A (en) * 1973-07-12 1974-12-10 Raymond Int Inc Pile structure
JPS5457402A (en) * 1977-10-17 1979-05-09 Okabe Kk Bit for selffboring rock bolt
JPS57178899U (en) * 1981-05-02 1982-11-12
JPS5996328A (en) * 1982-11-18 1984-06-02 Sekisui Prefab Homes Ltd Reinforcing work of retaining wall and earth anchor therefor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4877607A (en) * 1972-01-20 1973-10-18
US3852971A (en) * 1973-07-12 1974-12-10 Raymond Int Inc Pile structure
JPS5457402A (en) * 1977-10-17 1979-05-09 Okabe Kk Bit for selffboring rock bolt
JPS57178899U (en) * 1981-05-02 1982-11-12
JPS5996328A (en) * 1982-11-18 1984-06-02 Sekisui Prefab Homes Ltd Reinforcing work of retaining wall and earth anchor therefor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0190837U (en) * 1987-12-03 1989-06-14
JPH028413A (en) * 1988-01-21 1990-01-11 Hirose & Co Ltd Execution method of reinforced earth pile
KR100498536B1 (en) * 2002-11-28 2005-07-01 주식회사 제일종합통상 Method for costructing anchors under the ground using high pressure grouting

Also Published As

Publication number Publication date
JPH0558084B2 (en) 1993-08-25

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