JPS5991219A - Earth anchor - Google Patents

Earth anchor

Info

Publication number
JPS5991219A
JPS5991219A JP20319482A JP20319482A JPS5991219A JP S5991219 A JPS5991219 A JP S5991219A JP 20319482 A JP20319482 A JP 20319482A JP 20319482 A JP20319482 A JP 20319482A JP S5991219 A JPS5991219 A JP S5991219A
Authority
JP
Japan
Prior art keywords
wings
anchor
earth anchor
tips
anchor body
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.)
Pending
Application number
JP20319482A
Other languages
Japanese (ja)
Inventor
Masami Nishida
正己 西田
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.)
Sekisui House Ltd
Original Assignee
Sekisui House Ltd
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 Sekisui House Ltd filed Critical Sekisui House Ltd
Priority to JP20319482A priority Critical patent/JPS5991219A/en
Publication of JPS5991219A publication Critical patent/JPS5991219A/en
Pending legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74Means for anchoring structural elements or bulkheads
    • E02D5/80Ground anchors
    • E02D5/803Ground anchors with pivotable anchoring members

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 raise the tensile resistance of an earth anchor by a method in which basal ends of wings are pivotally attached to an anchor body, and the tips of the wings are connected to a pulling tool through a connecting tool in such a way as to enable the wings to open outwards. CONSTITUTION:Basal ends of two wings 3 are pivotally attached between tips of two supporting plates 11 fixed to the tip of the body 7 of an earth anchor 4. The other end of connecting tools 15 whose one ends are pivotally connected with both sides of the tips of the wings 3 are pivotally connected to one end of a pulling tool 17, and the pulling tool 17 is inserted into the body 7 and its other end is led to the outside. The body 7 is inserted into the lower hole 2 of the partition wall, the pulling tool 17 is pulled to open outwards the wings 3, a grout 5 is injected to solidify the surrounding of the wings 3 to form an anchor body 6. The need to penetrate the anchor body to deep layer into the ground can thus be eliminated.

Description

【発明の詳細な説明】 本発明は、宅地等の造成地において擁壁の補強工法に使
用されるアースアンカーに関するものである。近年、宅
地の造成化が進むに伴って、擁壁の事故が増加する傾向
にある。このような事故の主なものは、転倒、はらみ、
移動等があげられ、かかる事故の場合は、擁壁を貫通し
て多数のアースアンカーを打ち込み、これら各アースア
ンカー同士を互いに連結することが一般に行われている
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an earth anchor used in a method for reinforcing retaining walls in developed areas such as housing lots. In recent years, as residential land development progresses, accidents involving retaining walls tend to increase. The main causes of such accidents are falls, tripping,
In the event of such an accident, it is common practice to drive a large number of earth anchors through the retaining wall and connect these earth anchors to each other.

このようなアースアンカーによる工法は、削孔へ引張材
を挿入した後グラウト材を注入して、先端部にアンカ一
体を形成させるものであるが、従来一般の工法では、一
本当たりの引き抜き抵抗力を充分なものとするため地中
深く挿入しなければならず、そのため、削孔機等の装置
に大型なものを必要′とし、かつ、架設設備の組立が必
要となって全体に人身りなものとなり、コスト高となる
欠点があった。本発明はこのような現状に鑑がみてなさ
れたもので、低コストで実施することのできる擁壁補強
工法用のアースアンカーを提供せんとするものである。
In this construction method using earth anchors, a tensile material is inserted into the drilled hole and then grout is injected to form an integrated anchor at the tip.However, in conventional construction methods, the pullout resistance per In order to obtain sufficient force, it must be inserted deep into the ground, which requires large-sized equipment such as a hole-drilling machine, and requires assembly of erection equipment, making the entire structure labor intensive. This has the drawback of increasing costs. The present invention has been made in view of the current situation, and aims to provide an earth anchor for a retaining wall reinforcement method that can be implemented at low cost.

以下、本発明の構成を図示の実施例に基づいて説明する
と、第1図〜第3図は、本発明アースアンカーを用いた
施工法を示しており、まず、擁壁(1)の外側より斜め
下方に向けて下穴[2)を開ける。
Hereinafter, the structure of the present invention will be explained based on the illustrated embodiment. Figures 1 to 3 show a construction method using the earth anchor of the present invention. First, from the outside of the retaining wall (1), Drill a pilot hole [2] diagonally downward.

このような下穴(2)を開ける方法としては、例えば、
鋼管杭を打ち込んで抜き出す方法が挙げられる。
For example, the method for drilling such a pilot hole (2) is as follows:
One method is to drive in steel pipe piles and pull them out.

上記のようにして、下穴(2)を開けた後、この下穴(
2)へ、第2図の如く、先端に翼(3)を備えた本発明
アースアンカー(4)を挿入し、次いで、このH(31
に連結された引張yt (17)を外部から引っ張るこ
とによって、翼(3)を傘状に開かせる。上記のように
して、翼(3)を開かせた後、第3図の如く、外側より
セメントミルク等のグラウト材(5)を注入して翼(3
)の周囲を被覆して固化させて、アンカ一体(6)を形
成する。なお、グラウト材(5)による被覆は、できれ
ばアースアンカー(4)のほぼ全長に亘って行うことが
望ましい。
After drilling the pilot hole (2) as described above, this pilot hole (
2), insert the earth anchor (4) of the present invention equipped with wings (3) at the tip as shown in Figure 2, and then insert this H (31
By pulling the tension yt (17) connected to from the outside, the wings (3) are opened in an umbrella shape. After opening the wings (3) as described above, grouting material (5) such as cement milk is injected from the outside as shown in Figure 3.
) is coated and solidified to form an integral anchor (6). Note that it is desirable that the grout material (5) be coated over almost the entire length of the earth anchor (4) if possible.

このようなアースアンカー(4)は、1つの擁壁につい
て複数本挿入され、これらが定着した段階でyJ壁(1
)の外側で緊張し、かつ、相互に連結する。
A plurality of such earth anchors (4) are inserted for one retaining wall, and when they are fixed, they are inserted into the yJ wall (1
) are tense outside and interconnected.

なお、下火(2)を開けずに直接アースアンカー(4)
を打ち込む方法もある。
In addition, do not open the lower flame (2) and connect it directly to the earth anchor (4).
There is also a way to type.

第4図以下は、本発明アースアンカー(41の構造を示
しており、引張材となるアンカ一本体(7)は、地中に
挿入するに充分な長さを有する鋼管を使用している。(
11)  (11)は、その一端を前記アンカ一本体(
7)の先端へ固着して該アンカ一本体(7)外方へ突出
させた平行な2枚の支持プレートであって、これらの支
持プレート(11)  (11)の先端間に取り付けた
ピン(12)には、2枚の翼<31 (31が、その基
端部において枢着されている。(’14)  (14)
は、各翼(31(3)の互いに対向する端面に固着した
受圧板を示している。更に、これら翼(31(31の先
端には、各々その表裏両面側に一対の連結具(15)(
15)がピン(16)  (16)によって枢着され、
これらの連結員(15)  (15)は、翼+31 (
3)に沿ってアンカ一本体(7)側へ延長されるととも
に、前記支持プレート(11)  (11)間の隙間へ
挿入されている。
Figures 4 and below show the structure of the earth anchor (41) of the present invention, in which the anchor body (7) serving as a tensile member is made of a steel pipe having a length sufficient to be inserted into the ground. (
11) (11) has one end attached to the anchor body (
two parallel support plates fixed to the tips of the anchor body (7) and protruding outward; a pin (11) attached between the tips of these support plates (11) 12) has two wings <31 (31) pivotally attached at its base end. ('14) (14)
shows pressure receiving plates fixed to mutually opposing end surfaces of each wing (31 (3)).Furthermore, at the tips of these wings (31 (31), a pair of connectors (15) are attached to the front and back surfaces of each wing (31). (
15) are pivotally connected by pins (16) (16),
These connectors (15) (15) are wing +31 (
3) toward the anchor body (7), and is inserted into the gap between the support plates (11) (11).

他方、引張具(17)は、アンカ一本体(7)内へ挿入
されて、その一端を外部へ導出される棒状であって、こ
の引張具(17)の内端に取り付けられた羽子板(I8
)に、前記連結具(15)  (15)の先端がピン(
19)を介して枢支連結されている。
On the other hand, the tension tool (17) has a rod shape that is inserted into the anchor body (7) and has one end led out to the outside.
), the tip of the connecting tool (15) (15) is connected to the pin (
19).

従って、上記構成において、アンカ一本体(7)を前記
下穴(2)へ挿入した後、アンカ一本体(7)の外端を
何等かの手段で支持しておき、この状態で引張具(17
)を引抜き方向へ強く引っ張ると、連結具(15)  
(15)を介して、翼(3) (3)が第5図の2点鎖
線の如く外方へ開き、これによって、翼+31 (3)
は、強制的に開かしめられることとなる。第7図は、こ
のように、翼(3)を開かしめた後、セメントミルクを
注入して該翼(3)部分を被覆した状態を示している。
Therefore, in the above configuration, after inserting the anchor body (7) into the prepared hole (2), the outer end of the anchor body (7) is supported by some means, and in this state, the tension tool ( 17
) in the pulling direction, the connector (15)
(15), the wing (3) (3) opens outward as shown by the two-dot chain line in Fig. 5, and thereby the wing +31 (3)
will be forced to open. FIG. 7 shows a state in which the wing (3) is thus opened and then cement milk is injected to cover the wing (3) portion.

本発明は、以上のような構成であり、このように本発明
によれば、アンカ一本体の翼を開かせた状態でセメント
ミルク等を注入して被覆し、これによって、アンカ一体
を形成するようにしているから、小きな割には引抜き耐
力が大きく、そのため、従来のように地中深く挿入する
必要がなく、小型な装置で済み、かつ、架設関係の設備
が不要で低コストで実施できるとともに、このように、
本発明では、引張具を引っ張ることによって翼を強制的
に開かしめるから、翼は略確実に開くという効果が得ら
れる。
The present invention has the above-described configuration, and according to the present invention, cement milk or the like is injected to cover the anchor body with the wings opened, thereby forming the anchor body. Because of this, it has a large pull-out strength despite its small size, so there is no need to insert it deep into the ground like in the past, and it requires only a small device, and there is no need for construction-related equipment, so it is low cost. It can be implemented and in this way,
In the present invention, since the blades are forcibly opened by pulling the tensioning tool, the blades can be opened almost reliably.

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

第1図から第3図は、本発明アースアンカーを用いた施
工方法を示す概略縦断面図、第4図は、本発明アースア
ンカー先端部の斜視図、第5図は、同じく先端部の縦断
平面図、第6図は、同じく縦断正面図、第7図は、翼部
分を開かせた状態でセメントミルクで被覆した状態を示
す正面図である。 (3)〜 翼、(4L−アースアンカー、(7)−・−
アンカ一本体、(15)・−・連結具、(1))・−・
−引張具。 特許 出願人 積木ハウス 株式会社 代理人弁理士 樽  本  久  幸 =83−
Figures 1 to 3 are schematic vertical cross-sectional views showing the construction method using the earth anchor of the present invention, Figure 4 is a perspective view of the tip of the earth anchor of the present invention, and Figure 5 is a longitudinal cross-sectional view of the tip of the earth anchor of the present invention. A plan view, FIG. 6 is a longitudinal front view, and FIG. 7 is a front view showing the wing portion in an open state and covered with cement milk. (3) ~ Wings, (4L-Earth Anchor, (7) ---
Anchor body, (15) --- Connector, (1)) ---
-Tensioning devices. Patent Applicant: Tsukiki House Co., Ltd. Representative Patent Attorney Hisayuki Tarumoto = 83-

Claims (1)

【特許請求の範囲】[Claims] 地中へ挿入されるアンカ一本体(7)へ、外方へ開く翼
(3)の基端を枢着し、該翼(3)の先端に連結具(1
5)の一端を連結するとともに、該連結具(15)の他
端に連結した引張具(17)を前記アンカ一本体(7)
内を通って外部へ導出して、この引張具(17)を引っ
張ることによって、上記翼(3)を開かしめるようにし
たアースアンカー。
The base end of the wing (3) that opens outward is pivotally attached to the anchor body (7) that is inserted into the ground, and the connector (1) is attached to the tip of the wing (3).
5) and the tensioning tool (17) connected to the other end of the connecting tool (15) to the anchor body (7).
The earth anchor is guided to the outside through the inside, and the wings (3) are opened by pulling the tension tool (17).
JP20319482A 1982-11-18 1982-11-18 Earth anchor Pending JPS5991219A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20319482A JPS5991219A (en) 1982-11-18 1982-11-18 Earth anchor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20319482A JPS5991219A (en) 1982-11-18 1982-11-18 Earth anchor

Publications (1)

Publication Number Publication Date
JPS5991219A true JPS5991219A (en) 1984-05-25

Family

ID=16470017

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20319482A Pending JPS5991219A (en) 1982-11-18 1982-11-18 Earth anchor

Country Status (1)

Country Link
JP (1) JPS5991219A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040040791A (en) * 2002-11-08 2004-05-13 정성필 The anchor method which uses the ground improvement shoe

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4913907A (en) * 1972-05-20 1974-02-06
JPS5531251A (en) * 1978-08-25 1980-03-05 Matsushita Electric Ind Co Ltd Liquid fuel combustion apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4913907A (en) * 1972-05-20 1974-02-06
JPS5531251A (en) * 1978-08-25 1980-03-05 Matsushita Electric Ind Co Ltd Liquid fuel combustion apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040040791A (en) * 2002-11-08 2004-05-13 정성필 The anchor method which uses the ground improvement shoe

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