JPH0115655B2 - - Google Patents
Info
- Publication number
- JPH0115655B2 JPH0115655B2 JP59162082A JP16208284A JPH0115655B2 JP H0115655 B2 JPH0115655 B2 JP H0115655B2 JP 59162082 A JP59162082 A JP 59162082A JP 16208284 A JP16208284 A JP 16208284A JP H0115655 B2 JPH0115655 B2 JP H0115655B2
- Authority
- JP
- Japan
- Prior art keywords
- anchor
- rod
- casing pipe
- ground
- pipe
- 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
- E02D5/805—Ground anchors with deformable 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)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は道路、鉄道、ダムなどの建設の基礎工
事として行なわれる永久型のアンカー工法に関す
る。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a permanent anchor construction method used as foundation work for the construction of roads, railways, dams, etc.
従来の技術
従来この種アンカー工法として、削孔し拡径
後、アンカーロツドを挿入し次いでモルタルを注
入充填するような工法が一般に採用されている
が、斯かる従来工法は工数が多く施工が非能率的
であるのみならずアンカーの信頼性に欠ける難点
があつた。Conventional technology Conventionally, this type of anchor construction method generally involves drilling a hole, expanding its diameter, inserting an anchor rod, and then injecting and filling it with mortar.However, such conventional construction method requires a large number of man-hours and is inefficient in construction. The problem was that the anchor was not only reliable but also unreliable.
発明が解決しようとする問題点
本発明は上記従来の問題を一掃することを目的
としてなされたものである。Problems to be Solved by the Invention The present invention has been made for the purpose of eliminating the above-mentioned conventional problems.
問題点を解決するための手段
本発明は、ケーシングパイプを、該パイプ内に
挿装されたアンカーロツド及び該ロツドの下部に
側方張出し状に付設されていて保有バネに抗し押
しすぼめられた状態で上記パイプ内に収納された
バネ鋼製アンカーアームとともに、所定の地盤内
に所定深度まで挿入し、次にアンカーロツドの下
部を、これに付設のアンカーアームとともにケー
シングパイプの下端より地盤内に突出させること
により、アンカーアームを保有バネにより側方張
出し状に自動復元させた後、アンカーロツドに回
転を与えて下部付設のアンカーアームにより地盤
を撹乱しつつこの撹乱地盤内に、ケーシングパイ
プ下端よりモルタル類を充填することを特徴とす
るアンカー工法に係る。Means for Solving the Problems The present invention provides a casing pipe with an anchor rod inserted into the pipe, and a lower part of the rod that is attached to the lower part of the rod in a lateral overhanging manner, and is pushed against a retaining spring and compressed. Insert the spring steel anchor arm housed in the pipe into the ground to a specified depth, and then make the lower part of the anchor rod, together with the attached anchor arm, protrude into the ground from the lower end of the casing pipe. As a result, after the anchor arm is automatically restored to the lateral extension shape by the holding spring, the anchor rod is rotated and the ground is disturbed by the anchor arm attached to the lower part, and mortar is poured into the disturbed ground from the lower end of the casing pipe. This relates to an anchor construction method characterized by filling.
実施例
以下に本発明の実施例を添附図面にもとづき説
明すると次の通りである。Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings.
本発明工法の実施に用いられるケーシングパイ
プ１は、第１図の要部拡大断面図から明かなよう
に、内部にアンカーロツド２が挿装され、該ロツ
ド２の下部には、バネ鋼製のアンカーアーム３が
側方張出し状に付設され、このアーム３は保有バ
ネに抗して押しすぼめられた状態でパイプ１内に
収納されている。図に示されたアンカーアーム３
は、90゜間隔配置の４本を１組（第２図参照）と
して上下に３段に付設されているが、各組の本数
及び段数は任意である。 As is clear from the enlarged sectional view of the main part of the casing pipe 1 used in the construction method of the present invention, an anchor rod 2 is inserted inside the casing pipe 1, and a spring steel anchor is inserted in the lower part of the rod 2. An arm 3 is attached so as to extend laterally, and the arm 3 is housed in the pipe 1 in a compressed state against a retaining spring. Anchor arm 3 shown in the figure
are attached in three stages above and below, with each set of four wires arranged at 90° intervals (see Fig. 2), but the number of wires in each set and the number of stages are arbitrary.
本発明工法を実施するに際しては、ケーシング
パイプ１及びアンカーロツド２は例えば第３〜６
図に示されるような施工機Ａにセツトされる。 When carrying out the construction method of the present invention, the casing pipe 1 and the anchor rod 2 are
It is set on construction machine A as shown in the figure.
施工機Ａはモータａの正、逆切換え操作により
支柱ｂに沿つて昇降される昇降部材Ｃを具備し、
この昇降部材ｃ上に、アンカーロツド回転操作用
の第１駆動機ｄとその直下にケーシングパイプ回
転操作用の第２駆動機ｅが中心軸線が共通するよ
うに設置され、第２駆動機ｅはシリンダーｆ操作
をして、所定のストローク巾で適宜上下に進退で
きるようになつている。第１駆動機ｄのチヤツク
部d1にアンカーロツド２の上端部が、また第２駆
動機ｅのチヤツク部e1にケーシングパイプ１の上
端部が、それぞれチヤツクされ、アンカーロツド
２は第２駆動機ｅ内を貫通している。その他図
中、４はケーシングロツド１の下端に備えられた
削堀案内用のビツト、５は第２駆動機ｅ上にケー
シングパイプ１内と連通するように備えられたモ
ルタル充填ホースである。 The construction machine A is equipped with an elevating member C that is moved up and down along the support b by the forward and reverse switching operation of the motor a,
On this elevating member c, a first drive machine d for rotating the anchor rod and a second drive machine e for rotating the casing pipe are installed directly below it so that their central axes are common, and the second drive machine e is a cylinder. By operating f, it is possible to move up and down as appropriate with a predetermined stroke width. The upper end of the anchor rod 2 is chucked to the chuck d1 of the first driving machine d, and the upper end of the casing pipe 1 is chucked to the chuck e1 of the second driving machine e. It penetrates inside. In addition, in the figure, 4 is a drilling guide bit provided at the lower end of the casing rod 1, and 5 is a mortar filling hose provided on the second drive machine e so as to communicate with the inside of the casing pipe 1.
本発明工法の一実施状況を第３〜７図に示す工
程図にもとづき説明すると、第３図に示す施工開
始時の状態より、モータａを正、逆切換え操作し
て昇降部材ｃを支柱ｂに沿い降下させ、この降下
につれケーシングパイプ１及びその内部の挿装の
アンカーロツド２を、地盤内に挿入して行く。ケ
ーシングパイプ１の地盤内への挿入は、通常のボ
ーリング操作と同様に、第２駆動機ｅによりパイ
プ１に回転を与えその下端のビツト４により地盤
を堀削し、またパイプ１の下端からは例えば水が
噴射される。 One implementation state of the construction method of the present invention will be explained based on the process diagrams shown in FIGS. 3 to 7. From the state at the start of construction shown in FIG. As it descends, the casing pipe 1 and the anchor rod 2 inserted therein are inserted into the ground. To insert the casing pipe 1 into the ground, the second drive machine e rotates the pipe 1 and excavates the ground using the bit 4 at its lower end, in the same way as a normal boring operation. For example, water is sprayed.
第４図に示すようにケーシングパイプ１の挿入
が所定深度に達した後は、挿入及び回転、水噴射
等を停止する。そしてシリンダーｆ操作をして、
第２駆動機ｅひいてはこれに支持されているケー
シングパイプ１を所定のストローク巾だけ上方へ
引上げ、もつてアンカーロツド２の下部を、これ
に付設のアンカーアーム３とともに、該パイプ１
の下端より突出せしめる。この突出操作は、ケー
シングパイプ１を固定側、アンカーロツド２を可
動側として行うようにしてもよい。 As shown in FIG. 4, after the insertion of the casing pipe 1 reaches a predetermined depth, insertion, rotation, water injection, etc. are stopped. Then operate the cylinder f,
The second drive unit e and the casing pipe 1 supported by the second drive unit e are pulled upward by a predetermined stroke width, and the lower part of the anchor rod 2 is moved along with the anchor arm 3 attached to the pipe 1.
Make it protrude from the bottom edge of. This protruding operation may be performed with the casing pipe 1 on the fixed side and the anchor rod 2 on the movable side.
この突出により、第５図に示すようにアンカー
アーム３は、その保有バネにより、押しすぼめの
状態から側方張出し状態に自動復元する。この自
動復元後の状態が第８図に詳細に示されている。 Due to this protrusion, the anchor arm 3 is automatically restored from the compressed state to the side-extended state by its retaining spring, as shown in FIG. The state after this automatic restoration is shown in detail in FIG.
次に第５図に示す状態で、第２駆動機ｄをして
アンカーロツド２を回転し、下部に付設のアンカ
ーアーム３により、その張出し巾を回転半径とし
て地盤を撹乱し、この撹乱地盤内にケーシングパ
イプ１の下端からモルタル類を充填する。充填後
はロツド２の回転を停止し、パイプ１内にはモル
タルを充填する一方、ロツド２の上端を、第１駆
動機ｄのチヤツク部d1より外す。 Next, in the state shown in Fig. 5, the anchor rod 2 is rotated by the second drive unit d, and the ground is disturbed using the anchor arm 3 attached at the bottom with its overhang width as the rotation radius, and the ground is disturbed within this disturbed ground. Mortar is filled from the lower end of the casing pipe 1. After filling, the rotation of the rod 2 is stopped, and while the pipe 1 is filled with mortar, the upper end of the rod 2 is removed from the chuck portion d1 of the first driving machine d.
次に第６図に示すように、挿入時とは逆の操作
をして、ケーシングパイプ１を引抜くことによ
り、第７図に示すようにアンカーを造成できる。 Next, as shown in FIG. 6, the anchor is created as shown in FIG. 7 by pulling out the casing pipe 1 by performing the reverse operation to the insertion.
効 果
本発明工法は、ケーシングパイプによる削孔と
同時操作的に削孔内にアンカーロツドを挿入する
と共にアンカーロツドの下部に付設したアンカー
アームを利用して削孔の下部を拡孔する方式であ
るので、アンカー造成を段取り換えの必要性なし
に連続作業として実施でき、工数短縮ひいては作
業能率の向上を計り得る。更に得られたアンカー
にあつては、拡孔の全巾に亘つてアンカーアーム
が張出されているので、耐力性のよい信頼性の高
いアンカーを造成できる特徴を有する。Effects The method of the present invention is a method in which an anchor rod is inserted into the hole simultaneously with drilling with a casing pipe, and the lower part of the hole is enlarged using an anchor arm attached to the bottom of the anchor rod. , anchor construction can be carried out as a continuous operation without the need for changeovers, reducing man-hours and improving work efficiency. Furthermore, in the obtained anchor, since the anchor arm extends over the entire width of the expanded hole, it is possible to create a highly reliable anchor with good strength.
第１図は本発明工法に適用されるケーシングパ
イプを示す要部拡大断面図、第２図は第１図の平
面図、第３図乃至第７図は本発明工法の一実施状
況を工程順に示す説明図、第８図は、アンカーロ
ツドの突出時の状況を示す拡大断面図である。
図に於て、１はケーシングパイプ、２はアンカ
ーロツド、３はアンカーアームである。
Figure 1 is an enlarged cross-sectional view of the main part showing a casing pipe applied to the construction method of the present invention, Figure 2 is a plan view of Figure 1, and Figures 3 to 7 show the implementation status of the construction method of the present invention in the order of steps. The explanatory diagram shown in FIG. 8 is an enlarged sectional view showing the situation when the anchor rod is protruded. In the figure, 1 is a casing pipe, 2 is an anchor rod, and 3 is an anchor arm.
Claims (1)
たアンカーロツド及び該ロツドの下部に側方張出
し状に付設されていて保有バネに抗し押しすぼめ
られた状態で上記パイプ内に収納されたバネ鋼製
アンカーアームとともに、所定の地盤内に所定深
度まで挿入し、次にアンカーロツドの下部を、こ
れに付設のアンカーアームと共にケーシングパイ
プの下端より地盤内に突出させることにより、ア
ンカーアームを保有バネにより側方張出し状に自
動復元させた後、アンカーロツドに回転を与えて
下部付設のアンカーアームにより地盤を撹乱しつ
つこの撹乱地盤内に、ケーシングパイプ下端より
モルタル類を充填することを特徴とするアンカー
工法。1. A casing pipe, an anchor rod inserted into the pipe, and a spring steel rod attached to the lower part of the rod in a lateral overhanging manner and housed in the pipe in a compressed state against the holding spring. By inserting the anchor arm into the ground to a specified depth, and then protruding the lower part of the anchor rod together with the attached anchor arm into the ground from the lower end of the casing pipe, the anchor arm can be moved laterally by the holding spring. This anchor construction method is characterized in that after automatically restoring to an overhanging shape, the anchor rod is rotated and the ground is disturbed by an anchor arm attached to the lower part, and mortar is filled into the disturbed ground from the lower end of the casing pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16208284A JPS6140921A (en) | 1984-07-31 | 1984-07-31 | Anchoring work |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16208284A JPS6140921A (en) | 1984-07-31 | 1984-07-31 | Anchoring work |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6140921A JPS6140921A (en) | 1986-02-27 |
| JPH0115655B2 true JPH0115655B2 (en) | 1989-03-20 |
Family
ID=15747739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16208284A Granted JPS6140921A (en) | 1984-07-31 | 1984-07-31 | Anchoring work |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6140921A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2694070B2 (en) * | 1991-08-02 | 1997-12-24 | 雄治 越野 | Earth anchor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5338624B2 (en) * | 1972-05-24 | 1978-10-17 | ||
| JPS4931109A (en) * | 1972-07-19 | 1974-03-20 |
-
1984
- 1984-07-31 JP JP16208284A patent/JPS6140921A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6140921A (en) | 1986-02-27 |
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