JPH02213516A - Method of forming earth anchor - Google Patents
Method of forming earth anchorInfo
- Publication number
- JPH02213516A JPH02213516A JP3391689A JP3391689A JPH02213516A JP H02213516 A JPH02213516 A JP H02213516A JP 3391689 A JP3391689 A JP 3391689A JP 3391689 A JP3391689 A JP 3391689A JP H02213516 A JPH02213516 A JP H02213516A
- Authority
- JP
- Japan
- Prior art keywords
- hole
- injection
- net body
- net
- anchor
- 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
Links
- 238000000034 method Methods 0.000 title claims description 28
- 239000000463 material Substances 0.000 claims abstract description 52
- 239000004568 cement Substances 0.000 claims abstract description 11
- 238000002347 injection Methods 0.000 claims description 53
- 239000007924 injection Substances 0.000 claims description 53
- 239000004743 Polypropylene Substances 0.000 abstract description 3
- -1 polypropylene Polymers 0.000 abstract description 3
- 229920001155 polypropylene Polymers 0.000 abstract description 3
- 239000011347 resin Substances 0.000 abstract description 3
- 229920005989 resin Polymers 0.000 abstract description 3
- 239000000945 filler Substances 0.000 abstract 5
- 238000005553 drilling Methods 0.000 abstract 2
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、アースアンカーの造成方法に係わり、特に、
地盤の亀裂からの注入材の逸脱を防止でき〔従来の技術
］
一般に、アースアンカーは、例えば、第５図の（ａ）〜
（ｄ）に示すように、地盤１１にケーシング１３を挿入
し掘削を行ない、この後、ケーシング１３内に、引張材
１５および注入ホース１７を挿入し、ケーシング１３を
回収した後、注入ホース１７から造成孔１９中にセメン
トペースト等の注入材を充填し、この注入材を固化して
造成孔１９中にアンカー体２１を形成することにより造
成される。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for creating an earth anchor, and in particular,
It is possible to prevent the injection material from escaping from cracks in the ground. [Prior art] In general, earth anchors can be used, for example, in (a) to
As shown in (d), the casing 13 is inserted into the ground 11 and excavation is performed, and then the tensile material 15 and the injection hose 17 are inserted into the casing 13, and after the casing 13 is recovered, the injection hose 17 The anchor body 21 is created by filling the hole 19 with an injection material such as cement paste, solidifying the injection material, and forming the anchor body 21 in the hole 19 .
しかしながら、このようなアースアンカーの造成方法に
おいては、地盤１１に亀裂等が存在すると、この亀裂か
ら注入材が逸脱・し、注入材の充填が困難になるという
問題があった。However, in this method of constructing an earth anchor, there is a problem in that if there are cracks or the like in the ground 11, the injection material may deviate from the cracks, making it difficult to fill with the injection material.
このような問題を解決したアースアンカーの造成方法と
しては、例えば、特開昭４９−５６４１０号公報、特開
昭６３−５５２１６号公報、特開昭６２−２６０９８’
７号公報、特開昭６２−２１５７１５号公報、特開昭６
２−１０１７１１号公報等に開示されるようなものが知
られている。Methods for creating earth anchors that solve these problems include, for example, JP-A-49-56410, JP-A-63-55216, and JP-A-62-26098'.
Publication No. 7, JP-A-62-215715, JP-A-6
The one disclosed in Japanese Patent No. 2-101711 and the like is known.
すなわち、従来、亀裂からの注入材の逸脱を防止する方
法としては、第６図に示すように、地盤１１の亀裂２３
をオガクズ、パルプ（紙）等により詰める方法、セメン
トペースト等の濃度を高め粘性を大きくして逸脱を防止
する方法、あるいは第７図に示すように、造成孔１９内
に袋体２５を挿入して、袋体２５内に注入材を充填する
方法等が行なわれている。That is, conventionally, as a method for preventing the injection material from deviating from the crack, as shown in FIG.
A method of packing the material with sawdust, pulp (paper), etc., a method of increasing the concentration of cement paste, etc. to increase its viscosity to prevent it from slipping out, or a method of inserting a bag body 25 into the hole 19 as shown in FIG. Therefore, a method of filling the bag body 25 with an injection material has been used.
〔発明が解決しようとする課題］
しかしながら、亀裂２３をオガクズ、パルプ（紙）等に
より詰める方法では、注入材に異物を添加するため、ア
ンカー体２１の強度低下の虞があり、また、注入材を注
入ホース１７に供給する注入ポンプ等に問題を生じ、経
済性に欠けるという問題があった。[Problems to be Solved by the Invention] However, in the method of filling the cracks 23 with sawdust, pulp (paper), etc., since foreign matter is added to the injection material, there is a risk that the strength of the anchor body 21 will decrease. This poses a problem in the injection pump etc. that supplies the injection hose 17, resulting in a lack of economic efficiency.
また、セメントペースト等の注入材の濃度を高め粘性を
大きくして逸脱を防止する方法では、注入ポンプ等に大
きな能力が要求され、経済性に欠けるという問題があっ
た。Furthermore, the method of preventing deviation by increasing the concentration of the injection material such as cement paste and increasing its viscosity requires a large capacity of the injection pump, etc., and there is a problem in that it lacks economic efficiency.
さらに、造成孔１９内に袋体２５を挿入して、袋体２５
内に注入材を充填する方法では、引張材１５への袋体２
５の取り付けが容易でなく、また、袋体２５の存在によ
り、地盤１１との接着性に欠けるという問題があり、さ
らに、造成孔１９の孔径に応じて所定径の袋体２５を使
用する必要があるという問題があった。Furthermore, the bag body 25 is inserted into the created hole 19, and the bag body 25
In the method of filling the injection material into the bag body 2 to the tensile material 15,
5 is not easy to install, and the presence of the bag 25 causes a problem of poor adhesion to the ground 11.Furthermore, it is necessary to use a bag 25 of a predetermined diameter depending on the diameter of the created hole 19. There was a problem that there was.
本発明は、かかる従来の問題を解決するためになされた
もので、亀裂等からの注入材の逸脱を確実容易に防止す
ることのできるアースアンカーの造成方法を提供するこ
とを目的とする。The present invention has been made to solve such conventional problems, and an object of the present invention is to provide a method for constructing an earth anchor that can reliably and easily prevent the injection material from escaping from cracks or the like.
本発明にかかわるアースアンカーの造成方法は、地盤に
掘削した造成孔中にセメントペースト等の注入材を充填
した後、この注入材を固化して前記造成孔中にアンカー
体を造成するアースアンカーの造成方法において、前記
造成孔中に、引張材および注入ホースの外側に巻回され
たネット体を挿入した後、前記注入ホースから前記ネッ
ト体の内側に前記注入材を供給し、前記ネット体を前記
造成孔の内面に当接させ、この状態で、前記注入材を固
化して前記造成孔中にアンカー体を造成するものである
。The method for creating an earth anchor according to the present invention is to fill a hole drilled in the ground with an injection material such as cement paste, and then solidify the injection material to form an anchor body in the hole. In the creation method, after inserting a tensile material and a net body wound around the outside of the injection hose into the creation hole, the injection material is supplied from the injection hose to the inside of the net body, and the net body is The injection material is brought into contact with the inner surface of the created hole, and in this state, the injection material is solidified to create an anchor body in the created hole.
本発明のアースアンカーの造成方法では、造成孔中に、
引張材および注入ホースの外側に巻回されたネット体が
挿入された後、注入ホースからネット体の内側に注入材
が供給され、これにより、ネット体が造成孔の内面に当
接され、この状態で、注入材が固化され造成孔中にアン
カー体が造成される。In the method for creating an earth anchor of the present invention, in the created hole,
After the tensile material and the net body wound on the outside of the injection hose are inserted, the injection material is supplied from the injection hose to the inside of the net body, which causes the net body to abut against the inner surface of the created hole, and this In this state, the injection material is solidified and an anchor body is created in the created hole.
〔実施例］
以下、本発明方法の実施例を図面を用いて詳細に説明す
る。[Example] Hereinafter, an example of the method of the present invention will be described in detail using the drawings.
本発明のアースアンカーの造成方法では、先ず、前述し
た第５図の（ａ）に示したように、地盤１１にケーシン
グ１３を挿入し掘削が行われる。In the method for constructing an earth anchor of the present invention, first, as shown in FIG. 5(a) described above, the casing 13 is inserted into the ground 11 and excavation is performed.
この後、ケーシング１３が回収され、第１図および第２
図に示すように、造成孔１９中に、引張材１５および注
入ホース１７とともに、この引張材１５および注入ホー
ス１゛７の外側に巻回されたネット体３１が挿入される
。After this, the casing 13 is recovered and the
As shown in the figure, a net body 31 wound around the outside of the tensile material 15 and the injection hose 17 is inserted into the created hole 19 together with the tensile material 15 and the injection hose 17.
なお、この実施例では、ネット体３１は、ポリプロピレ
ン等の樹脂材により形成されており、そのメツシュは、
例えば、１インチ間に１６Ｘ１６メツシユのものが使用
されるが、このネット体３１のメツシュは、セメントペ
ースト等の水セメント比等に応じて最適なものを選定す
るのが望ましい。In this embodiment, the net body 31 is made of a resin material such as polypropylene, and the mesh is made of a resin material such as polypropylene.
For example, a mesh of 16x16 per inch is used, but it is desirable to select the optimal mesh for the net body 31 depending on the water-cement ratio of the cement paste or the like.
また、ネット体３１は、引張材１５および注入ホース１
７の外側に巻回された後、巻回終端をビニールテープ等
によりネット体３１の中間部に固定され、また、引張材
１５に沿って移動しないように、所定部位を引張材１５
に固定される。In addition, the net body 31 includes the tensile material 15 and the injection hose 1.
After being wound around the outside of the net member 7, the end of the winding is fixed to the middle part of the net body 31 with a vinyl tape or the like.
Fixed.
この後、注入ホース１７からネット体３１の内側に、例
えば、セメントペーストからなる注入材が供給され、こ
の注入材により、ネット体３１が外側に押圧され、第３
図および第４図に示すように、ネット体３１が造成孔１
９の内面に当接される。Thereafter, an injection material made of, for example, cement paste is supplied from the injection hose 17 to the inside of the net body 31, and the net body 31 is pressed outward by this injection material, and the third
As shown in the figure and FIG. 4, the net body 31
It is brought into contact with the inner surface of 9.
なお、この実施例では、セメントペーストからなる注入
材には、例えば、水セメント比が、０゜４０〜０．６０
程度のものが使用されている。In this example, the injection material made of cement paste has a water-cement ratio of 0°40 to 0.60, for example.
A certain amount is used.
この後、造成孔１９内に注入された注入材が固化され、
造成孔１９中にアンカー体２１が造成される。After this, the injection material injected into the creation hole 19 is solidified,
An anchor body 21 is created in the created hole 19.
しかして、本発明のアースアンカーの造成方法では、造
成孔１９中に、引張材１５および注入ホース１７の外側
に巻回されたネット体３１を挿入した後、注入ホース１
７からネット体３１の内側に注入材を供給し、ネット体
３１を造成孔１９の内面に当接させ、この状態で、注入
材を固化して造成孔１９中にアンカー体２１を造成する
ようにしたので、殆ど全ての注入材がネット体３１の内
部に充填されることとなり、亀裂２３等からの注入材の
逸脱を確実容易に防止することが可能となる。Therefore, in the method for creating an earth anchor of the present invention, after inserting the tensile material 15 and the net body 31 wound around the outside of the injection hose 17 into the formation hole 19, the injection hose 1
7 to the inside of the net body 31, the net body 31 is brought into contact with the inner surface of the creation hole 19, and in this state, the injection material is solidified to create the anchor body 21 in the creation hole 19. Therefore, almost all of the injection material is filled inside the net body 31, and it becomes possible to reliably and easily prevent the injection material from escaping from the cracks 23 and the like.
また、本発明のアースアンカーの造成方法では、ネット
体３１の綱目から、注入材が多少はみ出し造成孔１９の
凹凸内に浸入し、この状態で固化されることとなるため
、従来の袋体を使用する方法に比較して、地盤１１との
密着性が非常に高いアンカー体２１を提供することが可
能となる。In addition, in the method for creating an earth anchor of the present invention, the injection material somewhat protrudes from the mesh of the net body 31 and enters into the unevenness of the created holes 19, and is solidified in this state. Compared to the method used, it is possible to provide an anchor body 21 that has very high adhesion to the ground 11.
さらに、本発明のアースアンカーの造成方法では、ネッ
ト体３１の取り付けは、引張材１５および注入水−ス１
７の外側にネット体３１を巻回し、テープ等で止めれば
良いため、従来の袋体を使用する方法に比較して、非常
に容易なものとなる。Furthermore, in the method for creating an earth anchor of the present invention, the attachment of the net body 31 is performed by the tensile material 15 and the injected water bath 1.
Since it is sufficient to wrap the net body 31 around the outside of the bag 7 and fasten it with tape or the like, this method is much easier than the conventional method using a bag body.
また、本発明のアースアンカーの造成方法では、引張材
１５および注入ホース１７の外側にネット体３１を巻回
しているため、大きめのネット体３１を使用することに
より、造成孔１９の孔径が変化した場合にも容易に対処
可能となる。In addition, in the method for creating an earth anchor of the present invention, since the net body 31 is wound around the outside of the tensile material 15 and the injection hose 17, the diameter of the created hole 19 can be changed by using a larger net body 31. Even if this happens, it can be easily dealt with.
さらに、本発明のアースアンカーの造成方法では、亀裂
２３の位置が明らかな場合には、その部に対応する引張
材１５の位置にのみネット体３１を巻回することにより
、亀裂２３からの注入材の逸脱を防止することが容易に
可能となる。Furthermore, in the method for creating an earth anchor of the present invention, when the position of the crack 23 is clear, the net body 31 is wound only around the position of the tensile material 15 corresponding to that part, so that injection from the crack 23 is prevented. It becomes possible to easily prevent deviation of the material.
以上述べたように、本発明のアースアンカーの造成方法
では、造成孔中に、引張材および注入ホースの外側に巻
回されたネット体を挿入した後、注入ホースからネット
体の内側に注入材を供給し、ネット体を造成孔の内面に
当接させ、この状態で、注入材を固化して造成孔中にア
ンカー体を造成するようにしたので、亀裂等からの注入
材の逸脱を確実容易に防止することができるという利点
がある。As described above, in the method for creating an earth anchor of the present invention, after inserting the tensile material and the net body wound around the outside of the injection hose into the creation hole, the injection material is inserted from the injection hose into the inside of the net body. The net body is brought into contact with the inner surface of the hole, and in this state, the injection material is solidified and an anchor body is created in the hole, ensuring that the injection material does not escape from cracks etc. It has the advantage of being easily preventable.
１１・・・地盤 １５・・・引張材 １７・・・注入ホース １９・・・造成孔 ２１・・・アンカー体 ３１・・・ネット体。 第 図 第 図 第 図 第 図 11...ground 15...Tensile material 17... Injection hose 19...Creation hole 21...Anchor body 31...Net body. No. figure No. figure No. figure No. figure
Claims (1)
注入材を充填した後、この注入材を固化して前記造成孔
中にアンカー体を造成するアースアンカーの造成方法に
おいて、前記造成孔中に、引張材および注入ホースの外
側に巻回されたネット体を挿入した後、前記注入ホース
から前記ネット体の内側に前記注入材を供給し、前記ネ
ット体を前記造成孔の内面に当接させ、この状態で、前
記注入材を固化して前記造成孔中にアンカー体を造成す
ることを特徴とするアースアンカーの造成方法。(1) In a method for constructing an earth anchor, the method comprises filling a pouring material such as cement paste into a hole drilled in the ground, and then solidifying the pouring material to form an anchor body in the hole. After inserting the tensile material and the net body wound around the outside of the injection hose, the injection material is supplied from the injection hose to the inside of the net body, and the net body is brought into contact with the inner surface of the created hole. and in this state, the injection material is solidified to create an anchor body in the created hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3391689A JPH02213516A (en) | 1989-02-14 | 1989-02-14 | Method of forming earth anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3391689A JPH02213516A (en) | 1989-02-14 | 1989-02-14 | Method of forming earth anchor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02213516A true JPH02213516A (en) | 1990-08-24 |
Family
ID=12399845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3391689A Pending JPH02213516A (en) | 1989-02-14 | 1989-02-14 | Method of forming earth anchor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02213516A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4956410A (en) * | 1972-10-02 | 1974-05-31 | ||
| JPS62101711A (en) * | 1985-10-29 | 1987-05-12 | Kawaju Koji Kk | Earth anchor and its construction |
| JPS6355216A (en) * | 1986-08-27 | 1988-03-09 | Asahi Chem Ind Co Ltd | Formation of earth anchor |
-
1989
- 1989-02-14 JP JP3391689A patent/JPH02213516A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4956410A (en) * | 1972-10-02 | 1974-05-31 | ||
| JPS62101711A (en) * | 1985-10-29 | 1987-05-12 | Kawaju Koji Kk | Earth anchor and its construction |
| JPS6355216A (en) * | 1986-08-27 | 1988-03-09 | Asahi Chem Ind Co Ltd | Formation of earth anchor |
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