JPH0492017A - Core member of anchor tendon and removal of anchor - Google Patents
Core member of anchor tendon and removal of anchorInfo
- Publication number
- JPH0492017A JPH0492017A JP20769490A JP20769490A JPH0492017A JP H0492017 A JPH0492017 A JP H0492017A JP 20769490 A JP20769490 A JP 20769490A JP 20769490 A JP20769490 A JP 20769490A JP H0492017 A JPH0492017 A JP H0492017A
- Authority
- JP
- Japan
- Prior art keywords
- hose
- anchor
- core member
- holes
- removal
- 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
- 210000002435 tendon Anatomy 0.000 title abstract 3
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 abstract description 2
- 239000010959 steel Substances 0.000 abstract description 2
- 230000000149 penetrating effect Effects 0.000 abstract 2
- 239000011440 grout Substances 0.000 description 5
- 229920003002 synthetic resin Polymers 0.000 description 4
- 239000000057 synthetic resin Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000003908 quality control method Methods 0.000 description 3
- 229920003051 synthetic elastomer Polymers 0.000 description 3
- 239000005061 synthetic rubber Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
Description
〈産業上の利用分野〉
本発明はアンプ１−デンドンの芯部材及びアンカーの除
去工法に関するものである。
〈従来の技術〉
アンカーの除去工法は、既にアンカーの施工目的が達成
され、不要となったアンカーの引張材を除去し、地中の
既製障害物にならないようにするために開発された工法
である。
このアンカー工法除去には、従来から機械的、力学的、
化学的等の種々の方法が開発されている。
〈本発明が解決しようとする問題点〉
従来の７″ンカーの除去工法には、次のような問題点が
存在する。
くイ〉地中でのグラウト注入Ｊ］−や水圧が高いと、応
々にして除去のための機構に変形が生じ、撤去回収率が
１′し２く低下する。
〈口〉また、ＰＣｆ１４棒等により地上で組み立てたノ
′ンカーデンドンは剛性が高く、フレ４“シブル性に欠
けているため、アンカー孔・＼の挿入が困難な場合が多
々ある。
〈ハ〉さらに、アンカーテンドンの組立ｌ程が複錯で、
品質管理に枝輯と時間を要する。
〈本発明の目的〉
本発明はト、記のような問題点を解決４゛るためになさ
れたもので、アンカーの撤去及び挿入作業を容易に行う
ことができるｆ＝２・カーテントンの芯部材及びアンカ
ーの除去」法を提供することを目的とする。
〈問題点を解決Ａ−るための１段へ
即ち本発明は、複数の引張月によりなる″ｒ′ンノＪ−
ナンドンの軸心部に配置１５た芯部材においＵ、外周面
の軸方向に引張材群を取りイー１ける溝４．有し、かつ
軸方向に貫通孔を開設した、外力が作用すると外形が容
易に変形する外ホースと、この外ホースの貫通孔内に引
き抜き可能１′−収納し７た、外力が作用しても外形が
変形し７にくい内ホー・スとよりなることを特徴４！″
シ、た、ｆンカーテンドンの芯部材７′謁ル。
上記、芒部材を用いたアンカーの除去Ｔ法であ、って、
前記芯部材の外周面に引張材群を取り付けて作製したア
ンカーテンドンを地中に定着しまた後、先ず、前記外ホ
ースの貫通孔内より前記内ポースを引き抜いて、外ポー
スの外形が外力により容易に受刑できる状態にして、次
に、引張材群を引き抜いて除去づることを特徴とした、
アンプ１−７の除去：］、法である。
〈本発明の説明〉
以下、本発明の詳細な説明する。
〈イ〉アンカーテンドンの芯部材の構造本発明のアンカ
ーテンドンの芯部材は、第】図に示すように、外ホース
］と内ホース２よりなる。
外ホース１は、第４図に示１ように、外周面の軸方向に
引張月群を取り（＝１ｉＸｌｆるための取（１溝１１を
複数条有し１５、かつ軸方向に貫通孔１２を開設し。
た形状である。
この外ポース１は、合成樹脂やゴム等の材料で形成し、
外力が作用すると外形が容易に変形する構造とする。
なお、外ポース１は、全長にわたって継ぎ目箇所を一切
作らないことによって、防水性及び品質管理性を向］、
させることができる。
一方、内ホース２は、第５図に示すように、合成樹脂や
ゴム等の材料で形成し７たホース内に、鋼線等の・スプ
リング２１を内蔵した構造である。
従って、内ホース２は、軸方向には伸縮するものの、ス
プリング２１が内蔵されているため、外力によって外形
が変形し難い構造である。
ぞし、で、この内ホース２を、外ホース１の貫通ｌＬ１
２内に密着状態で、かつ引き抜き可能に収納する。
く口〉アンカーテンドンの作製
」、記の芯部材を所定の長さくアンカーテンドンの全長
とほぼ等しい長さ）に切断し、外ポース〕の取付溝１工
に引張材３群を、結束バンド４によって取り付ける。
なお、第１〜３図は、各々の引張材３の自由長部に、シ
ース３〕を被覆しまたアンボンドタイプを使用した場合
であるが、引張材３群の自由長部全周を〜つのシース管
で被覆したものでもよい。
そして、外ホース１の先端部には、バイＤットキャップ
５を取り付け、グラウトの浸入防止と、アンカー孔内へ
の挿入の容易性を確保する。
〈ハ〉アンカーテンドンの定着く第６図）先ず、地山に
ボーリングマシン等によって所定の深さの削孔を行い、
マシンを切り離して、地中にケーシングを残しておく。
次に、う“−シング内に１−、 ｉｉｅ、のように構成
［。、たアンカー・７−ンドンを挿入し、リーリングを
徐々に弓き抜きながら、グラウト６をテンドンの定着長
部に加ＩＥｔ＋入４−゛る。
ぞして、グラウト６の養列、硬化後、油圧シャ・ツキと
クサビを用いて引張旧；３を引っ張り、所定のブし・ス
ト<Industrial Application Field> The present invention relates to a method for removing core members and anchors of an amplifier 1-dendon. <Conventional technology> Anchor removal method is a method developed to remove unnecessary tensile material of anchors after the purpose of anchor construction has been achieved and to prevent them from becoming underground obstacles. be. This anchor removal method has traditionally been performed using mechanical, mechanical,
Various methods, including chemical, have been developed. <Problems to be solved by the present invention> The conventional 7" anchor removal method has the following problems. The mechanism for removal is deformed, and the removal recovery rate is 1 'and 2 decreases. <She mouth>No'curdong Dendon assembled on the ground with PCF14 rods, etc., has a high rigidity, fret 4. Because of the lack of flexibility, it is often difficult to insert anchor holes. 〈C〉Furthermore, the process of assembling the anchor donton is complicated.
Quality control requires a lot of effort and time. <Objective of the present invention> The present invention has been made to solve the problems as described in (G) and (4) below. The purpose of this invention is to provide a method for "removal of members and anchors". 〈Towards the first stage of solving the problem A- That is, the present invention is to solve the problem A-
A groove 4 is formed in the core member placed at the axial center of the Nandon, and a groove 4 is formed in the axial direction of the outer circumferential surface to take the tensile material group. an outer hose having a through-hole in the axial direction, the outer shape of which easily deforms when an external force is applied; Feature 4: The outer shape is deformed and the inner hose becomes more difficult to handle. ″
C, T, F. Core member 7' Audience of Curtaindon. The above is the anchor removal T method using the awn member,
After fixing the anchor donton made by attaching a tensile material group to the outer peripheral surface of the core member in the ground, first, the inner port is pulled out from the through hole of the outer hose, and the outer shape of the outer port is changed by external force. It is characterized by making it in a state where it can be easily imprisoned, and then pulling out and removing the tensile material group,
Removal of amplifiers 1-7: ], is the law. <Description of the present invention> The present invention will be described in detail below. <A> Structure of the core member of the anchor donton The core member of the anchor donton of the present invention consists of an outer hose and an inner hose 2, as shown in the figure. As shown in FIG. 4, the outer hose 1 has a plurality of grooves 11 (15) and a through hole 12 in the axial direction. This outer port 1 is made of a material such as synthetic resin or rubber,
The structure is such that the outer shape easily deforms when external force is applied. In addition, the outer port 1 has no seams along its entire length to improve waterproofness and quality control.
can be done. On the other hand, as shown in FIG. 5, the inner hose 2 has a structure in which a spring 21, such as a steel wire, is built into a hose 7 made of a material such as synthetic resin or rubber. Therefore, although the inner hose 2 expands and contracts in the axial direction, since the spring 21 is built in, the inner hose 2 has a structure in which the outer shape is not easily deformed by external force. Now, connect this inner hose 2 to the outer hose 1 through the hole 1L1.
2, in a tight state and removable. Cut the core member described above into a predetermined length (approximately equal to the total length of the anchor donn), attach 3 groups of tension material to the mounting groove 1 of the outer port, and attach 4 cable ties. Attach by. In addition, in Figs. 1 to 3, the free length of each tension member 3 is covered with a sheath 3 and an unbonded type is used, but the entire circumference of the free length of the group of tension members 3 is covered with a sheath 3]. It may also be covered with a sheath tube. A bi-Dut cap 5 is attached to the tip of the outer hose 1 to prevent grout from entering and to ensure ease of insertion into the anchor hole. <C> Establishment of Anchor Don (Figure 6) First, a hole is drilled to a predetermined depth in the ground using a boring machine, etc.
Separate the machine and leave the casing in the ground. Next, insert the anchor/7-don configured as 1-, iie, [. Then, after the grout 6 has been cured and hardened, pull the grout 3 using a hydraulic shovel and a wedge to the specified brush stroke.
【／スを導入し、で、アンカーヘッドを定着具７に、
よって定着する。
このように定着したｒンノノーテ゛ンドンは、スプリン
グ２１を内蔵ｌｏ、た内ポー・ス２が軸心部に位置して
いるため、地中被圧水やグラウト注入圧に対して十分耐
え得ることができる。
また、外ホース１及び内ホース２が合成樹脂やゴム等の
可撓性部材で形成されており、アンカーテンドン全体が
）し／キシブ月であるため、アンカーテンドンの挿入作
業を容易に行える利点も有”４る。
く二〉内ホースの抜き取り（第７図）
アンツノ−の施工目的が達成され、不要とな−、た後、
引張材３のプレストレスを解除する。
次に、地」７から手巻きウィンチ等で、内ポース２を地
＋側端部から徐々に巻き取り、外ホース１の貫通孔１２
内より内ホー・ス２全体を抜き取る。
このとき、内ホース２は、ウィンチ等で引っ張ると軸方
向に伸長し、外径が小さくなるため、外ポース１の内面
との間に隙間が生ｌ、５゜容易に引６〜抜くことができ
る。
くホ〉引張材の撤去（第８．９図）
内ホース２を引き抜くと゛、外ポース】は容易（乙外形
が変形する状態となる８
そのため、引張材３は、内側からの拘束力を失うことに
なり、この状態で引張材３を地上から油ｎ・ジヤツキ等
で引っ張ると、第ｒ）図に示ずＪ・）に、引張材３が外
周囲のグｆ＞ウド６から軸心方向に剥離することになる
。
従って、剥離した引張材３を巻き取り、容易に除去”す
ることができるわけである。
くべ〉外ホースの抜き取り（第１０図）外ホース１は、
強度がないためそのまま地中に残しておいても差し支え
ないないが、回収するのであれば、ウィンチ等で地上か
ら巻き取ることによって、容易に撤去することができる
。
この場合、外ポース１も引っ張ることによって外径が収
縮４るため、容期に剥離４ることができる。
また、合成樹脂系等の外ポース１の表面と、グ”（’７
１クト６との付着は期待できないものであるため、この
ことからも、容易に除去することが可能である。
〈本発明の効果）
本発明はＪＵ 、＋−説明したようになるので、次のよ
うな効果を期待することができる。
〈イ〉本発明のアンカーテンドンは、スプリングを内蔵
した内ポースが軸心部に位置しているため、地中被圧水
やグラウト注入圧に対し、て十分耐え得ることができる
。
従って、従来のように除去のための機構に変形が生じる
ことがなく、撤去回収率が高くなるとともに、アンカー
の目的である堅牢な定着が可能となる。
く口〉アンカーテンドン全体がフレキシブルであるため
、アンカーテンドンの挿入作業を容易に行うことができ
る。
また、現場から放れた場所で組み立てた後、普通トラッ
ク等でも搬入できる便利さを持つ。
〈ハ〉アンカーテンドンの組立、施工作業がいたって簡
単で熟練工を全く要さない。
このような単純な構造と手順は、労務費、機械費、管理
費を大幅に下げるため、その経済性は非常に優れている
。
〈二〉外ホースは、全長にわたって継ぎ目箇所を一切作
らないことによって、防水性及び品質管理性を向上させ
ることができる。[/Introduce the anchor head to the anchor 7,
Therefore, it becomes established. Since the installed spring 21 has a built-in spring 21 and the inner port 2 is located at the center of the shaft, it can sufficiently withstand underground water pressure and grout injection pressure. . In addition, since the outer hose 1 and the inner hose 2 are made of flexible materials such as synthetic resin or rubber, and the entire anchor donton is cylindrical, there is an advantage that the insertion work of the anchor donton can be done easily. Yes"4. Removal of the inner hose (Fig. 7) After the purpose of construction of the hose has been achieved and it is no longer necessary,
The prestress of the tensile material 3 is released. Next, using a manual winding winch or the like, gradually wind up the inner hose 2 from the ground + side end, and
Pull out the entire inner hose 2 from inside. At this time, when the inner hose 2 is pulled with a winch or the like, it expands in the axial direction and its outer diameter becomes smaller, so a gap is created between it and the inner surface of the outer hose 1, so that it can be easily pulled out by 5 degrees. can. (Fig. 8.9) When the inner hose 2 is pulled out, the outer pose is easily changed (the outer shape of the outer hose becomes deformed. 8) Therefore, the tension member 3 loses its binding force from the inside. Therefore, if the tension member 3 is pulled from the ground in this state with oil or jack, etc., the tension member 3 will move from the outer circumferential groove 6 in the axial direction to It will peel off. Therefore, the peeled tensile material 3 can be rolled up and easily removed.
Since it is not strong, it can be left underground as is, but if you wish to recover it, you can easily remove it by winding it up from the ground with a winch or the like. In this case, since the outer diameter of the outer port 1 is also contracted by pulling it, it can be peeled off in a timely manner. In addition, the surface of the outer port 1 made of synthetic resin etc.
Since adhesion to the first duct 6 cannot be expected, it can be easily removed for this reason as well. <Effects of the present invention> Since the present invention is as described above, the following effects can be expected. (a) Since the anchor donton of the present invention has an inner port with a built-in spring located at the axial center, it can sufficiently withstand underground water pressure and grout injection pressure. Therefore, the removal mechanism is not deformed as in the conventional case, and the removal and recovery rate is increased, and the purpose of an anchor, which is solid fixation, is achieved. Since the entire anchor donton is flexible, the work of inserting the anchor donton can be done easily. It is also convenient because it can be assembled away from the site and then transported by regular truck. <C> The assembly and construction work of Anchor Don is very easy and does not require any skilled workers. Such a simple structure and procedure significantly reduces labor, machine, and management costs, making it extremely economical. (2) The outer hose has no seams along its entire length, which improves waterproofness and quality control.
第１図二本発明のアンカーテンドンの説明間第２．３図
：その断面図
第４図：外ホースの説明図
第５図：内ホースの説明図
第６〜１０図：
除去作業の説明図Figure 1.2: An explanation of the anchor donton of the present invention. Figure 2.3: Its sectional view. Figure 4: An illustration of the outer hose. Figure 5: An illustration of the inner hose. Figures 6 to 10: An illustration of the removal work.
Claims (2)
部に配置した芯部材において、 外周面の軸方向に引張材群を取り付ける溝を有し、かつ
軸方向に貫通孔を開設した、外力が作用すると外形が容
易に変形する外ホースと、 この外ホースの貫通孔内に引き抜き可能に収納した、外
力が作用しても外形が変形しにくい内ホースとよりなる
ことを特徴とした、 アンカーテンドンの芯部材。(1) In a core member placed at the axial center of an anchor donton made of a plurality of tensile members, the outer peripheral surface has a groove for attaching a group of tensile members in the axial direction, and a through hole is opened in the axial direction to prevent external forces. Anchor dondon characterized by consisting of an outer hose whose outer shape easily deforms when an external force is applied, and an inner hose which is removably housed in a through hole of the outer hose and whose outer shape does not easily deform even when an external force is applied. core member.
法であって、 前記芯部材の外周面に引張材群を取り付けて作製したア
ンカーテンドンを地中に定着した後、先ず、前記外ホー
スの貫通孔内より前記内ホースを引き抜いて、 外ホースの外形が外力により容易に変形できる状態にし
て、 次に、引張材群を引き抜いて除去することを特徴とした
、 アンカーの除去工法。(2) An anchor removal method using the core member according to claim 1, wherein after fixing the anchor donton produced by attaching a tensile material group to the outer peripheral surface of the core member in the ground, An anchor removal method, characterized in that the inner hose is pulled out from the through hole of the hose, the outer shape of the outer hose is made easily deformable by external force, and then the tensile material group is pulled out and removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20769490A JPH0492017A (en) | 1990-08-07 | 1990-08-07 | Core member of anchor tendon and removal of anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20769490A JPH0492017A (en) | 1990-08-07 | 1990-08-07 | Core member of anchor tendon and removal of anchor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0492017A true JPH0492017A (en) | 1992-03-25 |
Family
ID=16544028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20769490A Pending JPH0492017A (en) | 1990-08-07 | 1990-08-07 | Core member of anchor tendon and removal of anchor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0492017A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012117343A (en) * | 2010-12-03 | 2012-06-21 | Kowa Sangyo Kk | Anchoring method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6131524A (en) * | 1984-07-24 | 1986-02-14 | Taisei Corp | Removal type anchor |
| JPS61204419A (en) * | 1985-03-06 | 1986-09-10 | Ushio Kogyo Kk | Removing method for removal type earth anchor |
| JPS62133213A (en) * | 1985-12-04 | 1987-06-16 | Taisei Corp | Removable anchor method |
-
1990
- 1990-08-07 JP JP20769490A patent/JPH0492017A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6131524A (en) * | 1984-07-24 | 1986-02-14 | Taisei Corp | Removal type anchor |
| JPS61204419A (en) * | 1985-03-06 | 1986-09-10 | Ushio Kogyo Kk | Removing method for removal type earth anchor |
| JPS62133213A (en) * | 1985-12-04 | 1987-06-16 | Taisei Corp | Removable anchor method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012117343A (en) * | 2010-12-03 | 2012-06-21 | Kowa Sangyo Kk | Anchoring method |
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