JPH0458524B2 - - Google Patents
Info
- Publication number
- JPH0458524B2 JPH0458524B2 JP60093300A JP9330085A JPH0458524B2 JP H0458524 B2 JPH0458524 B2 JP H0458524B2 JP 60093300 A JP60093300 A JP 60093300A JP 9330085 A JP9330085 A JP 9330085A JP H0458524 B2 JPH0458524 B2 JP H0458524B2
- Authority
- JP
- Japan
- Prior art keywords
- tensile
- anchor
- tensile material
- tension
- cavity
- 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 - Lifetime
Links
- 239000000463 material Substances 0.000 claims description 94
- 238000000034 method Methods 0.000 claims description 10
- 239000012209 synthetic fiber Substances 0.000 description 6
- 229920002994 synthetic fiber Polymers 0.000 description 6
- 238000009933 burial Methods 0.000 description 5
- 125000006850 spacer group Chemical group 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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
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、アンカーに於ける引張材の除去方法に
関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for removing tensile material from an anchor.
アンカーは、建家の構築等に際して各種の支持
基部として利用されるものであるが、利用後等に
於ては他の作業の障害となつたりするため、簡単
に除去できることが望まれている。特に、地盤か
ら突出している引張材については、この要求が強
い。
Anchors are used as various support bases when constructing buildings, etc., but after use, they can become an obstacle to other work, so it is desired that they can be easily removed. This requirement is particularly strong for tensile materials that protrude from the ground.
このため、少なくとも引張材を簡単に除去する
ことのできる手段の開発が期待されている。 Therefore, it is hoped that at least a means for easily removing the tensile material will be developed.
そこで、従来、アンカーに予め中空孔を形成し
て置き、又は後発的に中空孔を形成して、火薬等
によりアンカーを割裂させる手段が行なわれてお
り（例えば、特公昭51−8251号公報、特公昭54−
22007号公報参照）、これによつて、引張材に対す
る定着力を低下させて引張材を引き抜き除去する
ものであつた。 Therefore, conventional methods have been used, such as forming a hollow hole in the anchor in advance, or forming a hollow hole afterwards, and then splitting the anchor with explosives or the like (for example, Japanese Patent Publication No. 8251/1983, Tokuko Showa 54-
22007), thereby reducing the fixing force to the tensile material and pulling out and removing the tensile material.
然しながら、この従来の手段では、除去作業に
危険が伴い、又、震動や騒音が発生するという問
題があつた。 However, with this conventional method, there were problems in that the removal work was dangerous and vibrations and noise were generated.
そこで、本出願人は、このような問題を解決す
るために、新規な除去手段を提案している（特願
昭59−248328号）（特開昭61−146917号）。 In order to solve this problem, the present applicant has proposed a new removal means (Japanese Patent Application No. 59-248328) (Japanese Patent Application No. 146917-1982).
第１０図〜第１２図は、本出願人の既提案を示
したもので、アンカーは、地盤Ｅに掘設した造成
孔Ｈ内に築造したアンカー幹体Ａから成る。 10 to 12 show a previous proposal by the present applicant, in which the anchor consists of an anchor body A built in a hole H dug in the ground E.
アンカー幹体Ａは、第１１図に示すように、合
成繊維ロープ等の仮埋設体１と、仮埋設体１の周
囲に等間隔で取り付けられた複数本の引張材（例
えば、鋼棒、鋼線）２と、引張材２を定着するた
めに打設される硬化性材料（例えば、早強セメン
ト等から成るセメントペースト）３とから構成さ
れている。 As shown in FIG. 11, the anchor body A includes a temporary burial body 1 such as a synthetic fiber rope, and a plurality of tension members (for example, steel rods, steel (wire) 2, and a hardening material (for example, cement paste made of early-strengthening cement) 3 that is cast to fix the tensile material 2.
合成繊維ロープ等の仮埋設体１は、引張力を掛
けると伸張してその径を収縮するため、簡単に引
き抜き除去することが可能で、除去後にはアンカ
ー幹体Ａに空洞４が形成される。 The temporary buried body 1, such as a synthetic fiber rope, expands and contracts its diameter when a tensile force is applied, so it can be easily pulled out and removed, and after removal, a cavity 4 is formed in the anchor body A. .
そして、この空洞４の周囲には、引張材２が位
置していることになるため、第１０図に示すよう
に、空洞４よりも若干小径の押管５に引張材２を
挿通して押管５を押し込むと、引張材２は押管５
内に絞り込まれて硬化性材料３から剥離されるの
である。 Since the tensile material 2 is located around this cavity 4, as shown in FIG. When the tube 5 is pushed in, the tension member 2 is pushed into the push tube 5.
It is squeezed inward and peeled off from the curable material 3.
このように、引張材２を剥離して除去した後の
アンカー幹体Ａの状態が、第１２図に示す通りで
ある。 The state of the anchor body A after the tensile material 2 has been peeled off and removed in this manner is as shown in FIG. 12.
然しながら、斯かる本出願人の既提案による
と、除去作業の危険性の防止や震動、騒音の発生
防止は、充分に達成することができるが、引張材
２の剥離によつて生じた硬化性材料３の剥離片６
が空洞４内に堆積すると、前述した引張材２の押
管５への絞り込みが困難となり、引張材２を完全
に剥離できないことがある。又、複数本の引張材
２を同時に剥離していくため、押管５の押し込み
にかなり強大な力が必要となる。
However, according to the applicant's previous proposal, although it is possible to sufficiently prevent the danger of the removal work and the generation of vibrations and noise, the hardening caused by the peeling of the tensile material 2 Peeling piece 6 of material 3
If it accumulates in the cavity 4, it becomes difficult to squeeze the tensile material 2 into the push tube 5, and the tensile material 2 may not be completely peeled off. Furthermore, since a plurality of tensile materials 2 are peeled off at the same time, a considerably strong force is required to push the push tube 5.
本発明はこのような本出願人の既提案を改良し
たもので、その目的は、より簡単かつ完全に引張
材を除去することのできるアンカーに於ける引張
材の除去方法を提供することにある。 The present invention is an improvement on the applicant's previous proposal, and its purpose is to provide a method for removing tensile material from an anchor that can more easily and completely remove the tensile material. .
この目的を達成するため、本発明に係るアンカ
ーに於ける引張材の除去方法は、仮埋設体の周囲
の一部分に隣接配列して取り付けた複数本の引張
材を硬化性材料で定着して形成されるアンカー幹
体を造成孔中に築造して成るアンカーに対し、仮
埋設体を引き抜き除去して空洞を形成した後、引
張材の径と同一又はこれよりも若干大きな内径を
有する押管を引張材に嵌挿し、押管を引張材に沿
つて押し込むことにより引張材を硬化性材料から
空洞側へ剥離する第一除去手段を、少なくとも一
本の引張材に対して施工し、この第一除去手段に
よる剥離除去施工により硬化性材料の定着力が低
下した残る他の引張材を、引き抜き又は空洞側へ
引き出す第二除去手段を施工するものである。
In order to achieve this purpose, the method for removing tensile material from an anchor according to the present invention involves fixing a plurality of tensile materials adjacently arranged around a part of the periphery of a temporary burial object with a curable material. For an anchor constructed by constructing an anchor body in a created hole, the temporary buried body is pulled out and removed to form a cavity, and then a push pipe having an inner diameter that is the same as or slightly larger than the diameter of the tensile material is inserted. A first removing means for peeling the tensile material from the curable material toward the cavity side by inserting it into the tensile material and pushing a push tube along the tensile material is applied to at least one tensile material, A second removal means is provided to pull out or draw out the remaining tensile material whose fixing force of the curable material has been reduced by the peeling/removal operation by the removal means or toward the cavity side.
本発明に係るアンカーに於ける引張材の除去方
法に於ては、先ず、仮埋設体を引き抜き除去して
空洞を形成する。次に、引張材の径と同一又はこ
れよりも若干大きな内径を有する押管を、一本の
引張材に嵌挿し、次いで、この押管を引張材に沿
つて押し込むことにより、引張材を硬化性材料か
ら空洞側へ剥離する第一除去手段を施工する。そ
の後、この第一除去手段による剥離除去手段の施
工により、硬化性材料の定着力が低下した残る他
の引張材を、引き抜き、又は、空洞側へ引き出す
第二除去手段を施工する。
In the method for removing a tensile material in an anchor according to the present invention, first, the temporarily buried body is pulled out and removed to form a cavity. Next, a push tube with an inner diameter that is the same as or slightly larger than the diameter of the tensile material is inserted into one of the tensile materials, and then this push tube is pushed along the tensile material to harden the tensile material. A first removal means is installed to peel off the material toward the cavity. Thereafter, by applying the peeling and removing means using the first removing means, a second removing means is applied to pull out the remaining tensile material whose fixing force of the curable material has decreased, or to draw it out to the cavity side.
以下、本発明の実施例を図面に基づいて説明す
る。
Embodiments of the present invention will be described below based on the drawings.
第１図及び第２図は、本発明に係るアンカーに
於ける引張材の除去方法の実施例を示すもので、
第１図では、仮埋設体１が除去された状態が示さ
れ、第２図では、引張材２に沿つて押管９が押し
込まれている第一除去手段の状態が示されてい
る。 FIGS. 1 and 2 show an example of a method for removing tension material in an anchor according to the present invention,
FIG. 1 shows a state in which the temporary buried body 1 has been removed, and FIG. 2 shows a state in which the first removal means has pushed the push pipe 9 along the tensile material 2.
押管９は、引張材２の径と同一又はこれよりも
若干大きな内径を有しており、押管９を引張材２
に嵌挿して押し込むことになる。 The push pipe 9 has an inner diameter that is the same as or slightly larger than the diameter of the tension member 2, and the push pipe 9 is connected to the tension member 2.
You will have to insert it and push it in.
第３図は、第２図の押管９の押し込み状態の詳
細を示したもので、ジヤツキ１０を用いてその一
端を引張材２に固定し、他端を押管９に固定し、
ジヤツキ１０と引張材２との固定部１０ａを反力
受けとして押管９を押し込むようになつている。 FIG. 3 shows the details of the push-in state of the push tube 9 shown in FIG.
The push pipe 9 is pushed in using the fixed part 10a between the jack 10 and the tension member 2 as a reaction force receiver.
ジヤツキ１０によつて押し込まれた押管９は、
引張材２に沿つて進行し、引張材２と硬化性材料
３との接合面に割り込んで引張材２を剥離する。 The push pipe 9 pushed in by the jack 10 is
It advances along the tensile material 2, cuts into the joint surface between the tensile material 2 and the curable material 3, and peels off the tensile material 2.
この押し込みの応力は、引張材２の押管９の若
干先方に於て、引張材２を弯曲させて空洞４側へ
逃げさせることになる。 The stress of this pushing causes the tensile member 2 to curve and escape toward the cavity 4 at a portion slightly ahead of the push pipe 9 of the tensile member 2.
従つて、押管９は、引張材２が剥離されて形成
されたダミー空洞４′を通ることになり、ジヤツ
キ１０に余り強大な押し込み力が要求されなくな
る。 Therefore, the push tube 9 passes through the dummy cavity 4' formed by peeling off the tensile material 2, and the jack 10 is not required to exert a very strong pushing force.
又、押管９は、引張材２に沿つて押し込まれる
ため、空洞４内に堆積している剥離片６の存在は
押管９の進行の障害とならず、引張材２を完全に
剥離することができる。 Further, since the push pipe 9 is pushed along the tensile material 2, the presence of peeling pieces 6 accumulated in the cavity 4 does not hinder the progress of the push pipe 9, and the tension material 2 is completely separated. be able to.
尚、この押管９の押し込みは、一つのジヤツキ
１０を用いて二以上の押管９に対して同時に行な
うことも可能である。 Note that this pushing of the push tubes 9 can also be performed simultaneously on two or more push tubes 9 using one jack 10.
このようにして、少なくとも一本の引張材２を
除去すれば、前述したように第二除去手段として
残りの引張材２をも簡単に除去することができ
る。 If at least one tensile material 2 is removed in this manner, the remaining tensile material 2 can also be easily removed as the second removal means, as described above.
尚、本発明者の実験によれば、第５図に示すよ
うに、引張材２ａ，２ｃ，２ｅ，２ｇの４本を押
管９を用いて除去した場合と、第６図に示すよう
に引張材２ａ，２ｄ，２ｇの３本を押管９を用い
て除去した場合とに於て、残りの引張材２につい
ては、ジヤツキ等で除去することができた。 According to the inventor's experiments, as shown in FIG. 5, when the four tensile members 2a, 2c, 2e, and 2g are removed using the push pipe 9, and as shown in FIG. In the case where the three tensile materials 2a, 2d, and 2g were removed using the push tube 9, the remaining tensile materials 2 could be removed by jacking or the like.
第７図は上記実施例に用いたアンカーを示した
もので、アンカー幹体Ａの断面が示されている。
仮埋設体１、引張材２、硬化性材料３から成るア
ンカー幹体Ａに於て、引張材２は、仮埋設体１の
周囲の一部分に隣接配列され偏在する構造となつ
ている。そして、仮埋設体１は、芯ロープ１ａ
と、合成繊維１b′を撚合して形成され芯ロープ１
ａの外周に巻き付けられた外層ロープ１ｂとから
成り、更に芯ロープ１ａは合成繊維ロープ１
a′と、この合成繊維ロープ１a′を被覆する樹脂被
膜１a″とから成つている。 FIG. 7 shows the anchor used in the above embodiment, and shows a cross section of the anchor body A.
In the anchor body A consisting of a temporary buried body 1, a tensile material 2, and a curable material 3, the tensile material 2 is arranged adjacent to a part of the periphery of the temporary buried body 1 and is unevenly distributed. The temporary buried body 1 is a core rope 1a.
The core rope 1 is formed by twisting the synthetic fibers 1b' and
The outer layer rope 1b is wound around the outer circumference of the core rope 1a, and the core rope 1a is a synthetic fiber rope 1.
a' and a resin coating 1a'' covering the synthetic fiber rope 1a'.
ここで、合成繊維１b′を撚合して形成された外
層ロープ１ｂは、硬化性材料３を含浸して仮埋設
体１の定着力を向上させ、且つ、隣接配列されて
硬化性材料３との接触面積が減少している引張材
２の定着力をも向上させる利点がある。 Here, the outer layer rope 1b formed by twisting the synthetic fibers 1b' is impregnated with the curable material 3 to improve the fixing power of the temporary burial body 1, and is arranged adjacent to the curable material 3. This has the advantage of improving the fixing force of the tensile material 2, which has a reduced contact area.
従つて、この硬化性材料３の含浸を促進するた
め、硬化性材料３としてミルク状のものを用いる
のが好ましい。又、樹脂被膜１a″を有する芯ロー
プ１ａは外層ロープ１ｂに対して滑りを生じるた
め、芯ロープ１ａの引き抜き除去が容易となり、
更に芯ロープ１ａを除去した後に於ては、空洞４
が形成されることになるため、硬化性材料３を含
浸している外層ロープ１ｂの引き抜き除去も容易
となる利点がある。 Therefore, in order to promote the impregnation of the curable material 3, it is preferable to use a milk-like material as the curable material 3. In addition, since the core rope 1a having the resin coating 1a'' slips against the outer layer rope 1b, it becomes easy to pull out and remove the core rope 1a.
Furthermore, after removing the core rope 1a, the cavity 4
is formed, which has the advantage that the outer layer rope 1b impregnated with the curable material 3 can be easily pulled out and removed.
第８図は、第７図に於ける引張材２の外側に造
成孔Ｈの周囲との間に間隙を保持するスペーサ７
を取り付けた実施例を示したものである。 FIG. 8 shows a spacer 7 that maintains a gap between the outside of the tensile member 2 and the periphery of the created hole H in FIG.
This figure shows an example in which a
図面では、スペーサ７として、円筒形状のもの
を用い、仮埋設体１、引張材２を結束するなまし
鋼線から成る結束線８で引張材２に取り付けてい
るが、スペーサ７の取付目的は、硬化性材料３の
打設の際に、引張材２が造成孔Ｈの周囲と接触し
て引張材２の定着力が低下するのを防止すること
にあるから、他の形状、他の取付構造を用いても
差し支えないものである。 In the drawing, a cylindrical spacer is used as the spacer 7, and it is attached to the tension member 2 with a binding wire 8 made of annealed steel wire that binds the temporary burial object 1 and the tension member 2. However, the purpose of installing the spacer 7 is , since the purpose is to prevent the tensile material 2 from coming into contact with the periphery of the created hole H and reducing the fixing force of the tensile material 2 when placing the curable material 3, other shapes and other attachments are possible. There is no problem in using the structure.
第９図は第７図に示すアンカー幹体Ａの軸線方
向に沿つた断面を示したものである。 FIG. 9 shows a cross section of the anchor body A shown in FIG. 7 along the axial direction.
このようなアンカーは、極めて強固な定着力を
有し、各種の支持基部として対応できるが、仮埋
設体１を除去すると、第７図に示すように引張材
２と硬化性材料３との接触面積が極端に減少し、
引張材２の定着力が低下する。 Such an anchor has an extremely strong fixing force and can be used as a variety of support bases, but when the temporary burial body 1 is removed, the tension material 2 and the hardening material 3 come into contact as shown in FIG. The area is drastically reduced,
The fixing force of the tensile material 2 decreases.
又、第４図に示すように配列された引張材２
ａ，２ｂ，……，２ｇに於て、例えば引張材２ａ
を除去すれば、引張材２ｂが、又、例えば引張材
２ｄを除去すれば、引張材２ｃ，２ｅが、定着力
を更に低下させることになる。 Moreover, the tensile members 2 arranged as shown in FIG.
a, 2b, ..., 2g, for example, the tensile material 2a
If the tension material 2b is removed, for example, and if the tension material 2d is removed, the tension materials 2c and 2e will further reduce the fixing force.
即ち、少なくとも一本の引張材２を適宜の手段
で除去すれば、隣接している引張材２に対する除
去された引張材２の支持力が喪失するため、定着
力が低下するのである。 That is, if at least one tensile material 2 is removed by appropriate means, the supporting force of the removed tensile material 2 with respect to the adjacent tensile material 2 is lost, so that the fixing force is reduced.
従つて、最初に除去する一本の引張材２の定着
力も、前述したように低下しているため、引き抜
きが簡単であるが、一本の引張材２を除去するこ
とによつて、残りの引張材２は単純な引つ張りに
よつて除去できる。 Therefore, since the fixing force of the first tensile material 2 to be removed is also reduced as described above, it is easy to pull it out, but by removing one tensile material 2, the remaining Tensile material 2 can be removed by simple pulling.
以上のように、本発明に係るアンカー引張材除
去方法は、第一除去手段によつて、引張材の径と
同一又はこれよりも若干大きな内径を有する押管
を用いて引張材を剥離することによつて、少なく
とも一本の引張材の除去を円滑に行なえるように
した後、第二除去手段によつて、残りの引張材を
除去するものであるから、引張材の除去が簡便に
行えると共にその除去作業性が向上する効果があ
る。
As described above, the anchor tensile material removal method according to the present invention includes peeling off the tensile material using a push pipe having an inner diameter that is the same as or slightly larger than the diameter of the tensile material, by the first removing means. After at least one tensile member can be smoothly removed by the second removing means, the remaining tensile member is removed by the second removing means, so that the tension member can be easily removed. At the same time, the removal workability is improved.
第１図は本発明に係るアンカーに於ける引張材
の除去方法の実施例が適用されるアンカーを示す
断面図である。第２図は本発明に係るアンカーに
於ける引張材の除去方法の実施例を示す断面図で
ある。第３図は第２図の要部拡大図である。第４
図は仮埋設体を除去した状態を示すアンカー幹体
の平面図である。第５図及び第６図は一部の引張
材を除去した状態を示すアンカー幹体の平面図で
ある。第７図は本発明に用いたアンカーを示す断
面図である。第８図は本発明に用いた別のアンカ
ーを示す断面図である。第９図は第８図の縦断面
図である。第１０図は従来例を示す断面図であ
る。第１１図は第１０図の引張材除去前のアンカ
ー幹体の拡大平面図である。第１２図は第１０図
の引張材除去後のアンカー幹体の拡大平面図であ
る。
符号の説明、１……仮埋設体、２，２ａ，２
ｂ，２ｃ，２ｄ，２ｅ，２ｆ，２ｇ……引張材、
３……硬化性材料、４……空洞、５，９……押
管、７……スペーサ、Ａ……アンカー幹体、Ｅ…
…地盤、Ｈ……造成孔。
FIG. 1 is a sectional view showing an anchor to which an embodiment of the method for removing tensile material in an anchor according to the present invention is applied. FIG. 2 is a sectional view showing an embodiment of the method for removing tension material from an anchor according to the present invention. FIG. 3 is an enlarged view of the main part of FIG. 2. Fourth
The figure is a plan view of the anchor body with the temporary buried body removed. FIGS. 5 and 6 are plan views of the anchor body with some tension members removed. FIG. 7 is a sectional view showing the anchor used in the present invention. FIG. 8 is a sectional view showing another anchor used in the present invention. FIG. 9 is a longitudinal sectional view of FIG. 8. FIG. 10 is a sectional view showing a conventional example. FIG. 11 is an enlarged plan view of the anchor body of FIG. 10 before the tension member is removed. FIG. 12 is an enlarged plan view of the anchor body of FIG. 10 after the tension member is removed. Explanation of symbols, 1...temporary buried body, 2, 2a, 2
b, 2c, 2d, 2e, 2f, 2g... tensile material,
3... Curable material, 4... Cavity, 5, 9... Push pipe, 7... Spacer, A... Anchor trunk body, E...
...Ground, H...Creation hole.
Claims (1)
付けた複数本の引張材を硬化性材料で定着して形
成されるアンカー幹体を造成孔中に築造して成る
アンカーに対し、仮埋設体を引き抜き除去して空
洞を形成した後、引張材の径と同一又はこれより
も若干大きな内径を有する押管を引張材に嵌挿
し、押管を引張材に沿つて押し込むことにより引
張材を硬化性材料から空洞側へ剥離する第一除去
手段を、少なくとも一本の引張材に対して施工
し、この第一除去手段による剥離除去施工により
硬化性材料の定着力が低下した残る他の引張材
を、引き抜き又は空洞側へ引き出す第二除去手段
を施工することを特徴とするアンカーに於ける引
張材の除去方法。1 For anchors formed by constructing an anchor body in a created hole by fixing a plurality of tension members arranged adjacently around a part of the periphery of the temporary buried body with a curable material, After pulling out and removing the material to form a cavity, a push tube with an inner diameter that is the same as or slightly larger than the diameter of the tension material is inserted into the tension material, and the tension material is hardened by pushing the push tube along the tension material. A first removal means for peeling the curable material toward the cavity side is applied to at least one tensile material, and the remaining other tensile materials whose fixing force of the curable material has been reduced by the peeling removal process by the first removal means. 1. A method for removing tension material in an anchor, which comprises constructing a second removal means for pulling out or pulling out the tension material toward the cavity side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9330085A JPS61250226A (en) | 1985-04-30 | 1985-04-30 | Anchor and removal of stressing material from anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9330085A JPS61250226A (en) | 1985-04-30 | 1985-04-30 | Anchor and removal of stressing material from anchor |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30760991A Division JPH0819674B2 (en) | 1991-11-22 | 1991-11-22 | anchor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61250226A JPS61250226A (en) | 1986-11-07 |
| JPH0458524B2 true JPH0458524B2 (en) | 1992-09-17 |
Family
ID=14078502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9330085A Granted JPS61250226A (en) | 1985-04-30 | 1985-04-30 | Anchor and removal of stressing material from anchor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61250226A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51133903A (en) * | 1975-05-15 | 1976-11-20 | Yuuji Shigeyama | Anchoring method and anchor wire |
| JPS5748020A (en) * | 1980-09-02 | 1982-03-19 | Shin Gijutsu Kaihatsu Kk | Removal anchor method and removal anchor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS649415A (en) * | 1987-07-01 | 1989-01-12 | Matsushita Electric Ind Co Ltd | Production of thin ferroelectric film element |
-
1985
- 1985-04-30 JP JP9330085A patent/JPS61250226A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51133903A (en) * | 1975-05-15 | 1976-11-20 | Yuuji Shigeyama | Anchoring method and anchor wire |
| JPS5748020A (en) * | 1980-09-02 | 1982-03-19 | Shin Gijutsu Kaihatsu Kk | Removal anchor method and removal anchor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61250226A (en) | 1986-11-07 |
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