JPH0237463B2 - KEEBURUTEICHAKUBUNOBOSHOKUHOHO - Google Patents
KEEBURUTEICHAKUBUNOBOSHOKUHOHOInfo
- Publication number
- JPH0237463B2 JPH0237463B2 JP15034983A JP15034983A JPH0237463B2 JP H0237463 B2 JPH0237463 B2 JP H0237463B2 JP 15034983 A JP15034983 A JP 15034983A JP 15034983 A JP15034983 A JP 15034983A JP H0237463 B2 JPH0237463 B2 JP H0237463B2
- Authority
- JP
- Japan
- Prior art keywords
- steel
- cable
- unbonded
- plate
- corrosion
- 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
- 229910000831 Steel Inorganic materials 0.000 claims description 29
- 239000010959 steel Substances 0.000 claims description 29
- 238000005260 corrosion Methods 0.000 claims description 16
- 230000007797 corrosion Effects 0.000 claims description 16
- 239000013013 elastic material Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 239000004033 plastic Substances 0.000 claims description 8
- 229920003023 plastic Polymers 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 238000005536 corrosion prevention Methods 0.000 description 8
- 239000004519 grease Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Landscapes
- Reinforcement Elements For Buildings (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Description
【発明の詳細な説明】
〔本発明の技術分野〕
本発明は、ロツクアンカー、アースアンカー等
のアンカーに使用されるアンボンドPC鋼より線
のケーブル定着部の防食方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method for preventing corrosion of a cable anchorage of unbonded PC steel strands used in anchors such as lock anchors and earth anchors.
最近、ロツクアンカー、アースアンカーに於い
て、PC鋼より線の自由長部分の防食が完全に出
来ることから、アンカー先端、定着部のみ、被覆
シースとグリース等の潤滑、防錆剤を除去したア
ンボンドPC鋼より線が多く使用されるようにな
つてきている。しかし乍ら、アンカー先端、定着
部は被覆シースとグリース等の潤滑防錆剤が除去
され、PC鋼より線は、裸の状態に置かれること
になる。その為、従来雨水等の外部還境に曝ろさ
れ易いアンカーヘツドより外側の部分なケーブル
全体にキヤツプ等を被せ、そのキヤツプ内にグリ
ース等を充填することによつて保護したきた。と
ころがアンカーヘツド内側の保護にはそれほど注
意が払われなかつた。しかしこの部分に於いて
も、ボーリング孔内からの流出水が存在する時、
また被覆シースの外側のボーリング孔内にグラウ
トを充填しても不完全でアンカーヘツド下側に空
隙が出来る可能性のある時等は、直接外部環境に
曝ろされる外側の部分と同様の保護をする必要が
ある。
Recently, in lock anchors and earth anchors, it has been possible to completely prevent corrosion of the free length of the PC steel strands, so it is possible to completely prevent corrosion of the free length of the PC steel strands. Wire is being used more often than PC steel. However, the coating sheath and lubricating and rust-inhibiting agent such as grease are removed from the anchor tip and anchoring part, leaving the PC steel stranded wire in a bare state. For this reason, conventionally, the entire portion of the cable outside the anchor head, which is easily exposed to external influences such as rainwater, is covered with a cap or the like, and the cap is filled with grease or the like to protect the cable. However, less attention was paid to the protection of the inside of the anchor head. However, even in this part, when there is water flowing out from the borehole,
In addition, if grouting is incomplete in the borehole on the outside of the covering sheath and there is a possibility that a void may form under the anchor head, the same protection as the outside part that is directly exposed to the external environment may be applied. It is necessary to
そこで、本発明はケーブル定着部の内側の完全
な防食を可能とするケーブル定着部の防食方法を
提供することを目的とするものである。
SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a method for preventing corrosion of a cable anchorage part, which makes it possible to completely prevent corrosion of the inside of the cable anchorage part.
そして、本発明はアンボンドPC鋼より線を使
用したケーブルの定着部に於いて、ケーブル定着
部内側のアンボンドPC鋼より線の被覆材を剥い
だ裸になつた部分を含む被覆部を、定着部と接続
した所定の貫通孔を有する底版をもつ鋼又はプラ
スチツクからなる管で保護し、その空間部には充
填材を注入すると同時に弾性材を、底版と鋼板又
は硬質プラスチツク板との間に挿入しこの両者を
締めつけ、弾性材を変形させ、上記被覆部と密着
させることを特徴とするケーブル定着部の防食方
法である。
Further, in the fixing section of a cable using unbonded PC steel stranded wires, the present invention removes the covering part including the bare part of the unbonded PC steel stranded wire inside the cable fixing section by removing the coating material from the unbonded PC steel stranded wire. A tube made of steel or plastic with a bottom plate having a predetermined through hole connected to the pipe is used to protect the pipe, and a filling material is injected into the space, and at the same time an elastic material is inserted between the bottom plate and the steel plate or hard plastic plate. This is a method for preventing corrosion of a cable fixing part, which is characterized by tightening both of them, deforming the elastic material, and bringing it into close contact with the covering part.
本発明において、空間部に注入する充填材とし
ては、モルタル、レジン、またはグリースなどが
使用でき、また、弾性材としては、適度な弾性力
を有するゴムを使用するのが好ましい。 In the present invention, mortar, resin, grease, or the like can be used as the filler to be injected into the space, and as the elastic material, it is preferable to use rubber having appropriate elasticity.
以下第１図及び第２図に基づいて本発明をより
詳細に説明する。第１図は本発明の防食方法を説
明するための図であつて、アンボンドPC鋼より
線を使用したアンカーのケーブル定着部の断面図
である。第１図中１はシースで被覆したアンボン
ドPC鋼より線であつて、裸のPC鋼より線１′の
周囲にポリエチレンからなる被覆シースで被覆
し、空隙部をグリースで充填したものである。こ
のシースで被覆したアンボンドPC鋼より線１の
緊張定着する為に、アンカーヘツド２にはクサビ
３が配置される孔が設けてあるが、この孔の下側
よりケーブル端末にかけてグリースと被覆シース
が除去されている。このグリースと被覆シースが
除去された裸の部分と、それに続くシース部ケー
ブルを構成するPC鋼より線１とボーリング孔内
にグラウトを注入し、排気する為のホース等が貫
通する孔を有する底版１３が取りつけてあるアン
カープレート４に接続されたプラスチツク又は鋼
からなる管１２で保護する。そしてこの管の底版
に適度な弾性変形が可能な弾性材料５、例えばゴ
ムのようなもの、をもう一枚の硬いプラスチツク
板又は鋼板６ではさみ、ボルト７で弾性材料を締
めつける。これにより弾性材料が、変形し被覆材
に横方向から圧力を加えることにより被覆材とゴ
ムが密着し、ボーリング孔内からの流出水が被覆
シースを伝わつて定着部付近の裸のPC鋼より線
１′のところに到達することを防ぐことが出来る。
さらには管内の空間部をモルタル、レジン又はグ
リース等の充填材９を注入充填する２重の保護に
よつてアンカーヘツド２内側のケーブルを外部環
境から確実に保護することが出来る。 The present invention will be explained in more detail below based on FIGS. 1 and 2. FIG. 1 is a diagram for explaining the corrosion prevention method of the present invention, and is a sectional view of a cable fixing portion of an anchor using unbonded PC steel strands. In FIG. 1, reference numeral 1 indicates an unbonded PC steel stranded wire covered with a sheath, in which a bare PC steel stranded wire 1' is covered with a covering sheath made of polyethylene, and the voids are filled with grease. In order to secure the unbonded PC steel strand wire 1 coated with this sheath under tension, the anchor head 2 is provided with a hole in which a wedge 3 is placed. has been removed. The bare part from which this grease and covering sheath have been removed, the sheathed part followed by the PC steel stranded wire 1 that makes up the cable, and the bottom plate that has a hole through which a hose, etc. for injecting grout and exhausting the borehole passes through. It is protected by a tube 12 made of plastic or steel connected to an anchor plate 4 to which 13 is attached. An elastic material 5, such as rubber, which can be appropriately elastically deformed, is sandwiched between another hard plastic plate or steel plate 6 on the bottom plate of the tube, and bolts 7 are used to tighten the elastic material. As a result, the elastic material is deformed and pressure is applied to the sheathing material from the side, causing the sheathing material and the rubber to come into close contact, and the water flowing out from the borehole is transmitted through the sheathing to the bare PC steel strands near the anchorage. 1' can be prevented from reaching 1'.
Furthermore, the cable inside the anchor head 2 can be reliably protected from the external environment by providing double protection by injecting and filling the space inside the pipe with a filler 9 such as mortar, resin, or grease.
第２図は、本発明の防食方法と従来の防食手段
とを組合せたケーブル定着部の防食法を説明する
ための図であつて、このケーブル定着部の断面図
を示す。第２図において、アンカーヘツド内側の
ケーブルを防食する手段、すなわち本発明の防食
手段は第１図に示したものと同じ構成であり、対
応する部分に同一番号が付与されている。以下第
１図と共通部分を省略して説明すると、従来から
実施されている防食手段は、アンカーヘツド２よ
り外側部分であり、これはアンカーヘツド２の外
側ケーブル全体にキヤツプ１０を被せ、ゴム等の
耐食性のあるかつ弾性材料１１を介してアンカー
プレート４にボルトで締めつけ、キヤツプ１０内
にモルタル、シシン又はグリース９を注入充填し
たものである。第２図に示すように、本発明の防
食手段と従来のそれとを組み合せることにより、
アンボンドPC鋼より線を使用したアンカーのケ
ーブルの定着部の完全な防食を提供することが出
来る。尚本発明においてアンカープレート１０に
接続された管が鋼製の時は、これ自体の耐蝕性を
向上させる為に亜鉛メツキ又は粉体塗装したもの
を用いることも出来る。 FIG. 2 is a diagram for explaining a method for preventing corrosion of a cable fixing section by combining the corrosion prevention method of the present invention and a conventional corrosion prevention means, and shows a sectional view of this cable fixing section. In FIG. 2, the means for preventing corrosion of the cable inside the anchor head, that is, the anticorrosion means of the present invention, has the same construction as that shown in FIG. 1, and corresponding parts are given the same numbers. Hereinafter, the common parts with FIG. 1 will be omitted and explained. The conventional corrosion prevention means is the part outside the anchor head 2. This is done by covering the entire outside cable of the anchor head 2 with a cap 10, and using rubber etc. The cap 10 is bolted to the anchor plate 4 through a corrosion-resistant and elastic material 11, and the cap 10 is filled with mortar, shishin, or grease 9. As shown in FIG. 2, by combining the corrosion prevention means of the present invention and the conventional one,
Unbonded PC steel strands can provide complete corrosion protection for anchor cable anchorages. In the present invention, when the pipe connected to the anchor plate 10 is made of steel, it may be galvanized or powder coated in order to improve its corrosion resistance.
本発明は、以下詳記した構成からなるものであ
るから、アンカーヘツド内側のケーブルを完全に
防食できる効果が生ずるものである。また、本発
明と従来の防食手段とを組合せることによつて、
アンカーヘツドの内、外共完全に防食できるすぐ
れた効果が生ずるものである。
Since the present invention has the structure described in detail below, it is possible to completely prevent corrosion of the cable inside the anchor head. Furthermore, by combining the present invention and conventional corrosion prevention means,
This provides excellent corrosion protection for both the inside and outside of the anchor head.
第１図は、本発明の防食方法を説明するための
図であつて、アンボンドPC鋼より線を使用した
アンカーのケーブル定着部の断面図である。第２
図は、本発明の防食方法と従来の防食手段とを組
合せたケーブル定着部の防食法を説明するための
図であつて、このケーブル定着部の断面図を示
す。
１ シースで被覆したアンボンドPC鋼より線、
１′ 裸のアンボンドPC鋼より線、２ アンカー
ヘツド、３ クサビ、４ アンカープレート（定
着板）、５ 弾性材料、６ プラスチツク又は鋼
製の板、７ ボルト、８ 充填材注入孔、９ 充
填材、１０ キヤツプ、１１ 弾性材料、１２
貫通孔を有する底版付鋼製又はプラスチツク製
管、１３ 貫通孔を有する底版。
FIG. 1 is a diagram for explaining the corrosion prevention method of the present invention, and is a sectional view of a cable fixing portion of an anchor using unbonded PC steel strands. Second
The figure is a diagram for explaining a method for preventing corrosion of a cable fixing section by combining the corrosion prevention method of the present invention and a conventional corrosion preventing means, and shows a cross-sectional view of the cable fixing section. 1. Unbonded PC steel strands covered with a sheath,
1' Bare unbonded PC steel strand, 2 Anchor head, 3 Wedge, 4 Anchor plate, 5 Elastic material, 6 Plastic or steel plate, 7 Bolt, 8 Filler injection hole, 9 Filler, 10 Cap, 11 Elastic material, 12
Steel or plastic tube with bottom plate having through holes, 13. Bottom plate having through holes.
Claims (1)
の定着部に於いて、ケーブル定着部内側のアンボ
ンドPC鋼より線の被覆材を剥いだ裸になつた部
分を含む被覆部を、定着板と接続した所定の貫通
孔を有する底版をもつ鋼又はプラスチツクからな
る管で保護し、その空間部には充填材を注入する
と同時に弾性材を、底版と鋼板又は硬質プラスチ
ツク板との間に挿入しこの両者を締めつけ、弾性
材を変形させ、上記被覆部と密着させることを特
徴とするケーブル定着部の防食方法。1. At the fixing part of a cable using unbonded PC steel stranded wire, the covering part, including the exposed part where the covering material of the unbonded PC steel stranded wire inside the cable fixing part is stripped, is connected to the fixing plate at a specified position. A tube made of steel or plastic with a bottom plate having a through hole is used to protect the pipe, and a filling material is injected into the space, and at the same time, an elastic material is inserted between the bottom plate and the steel plate or hard plastic plate, and both are tightened. . A method for preventing corrosion of a cable fixing part, characterized by deforming an elastic material and bringing it into close contact with the covering part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15034983A JPH0237463B2 (en) | 1983-08-19 | 1983-08-19 | KEEBURUTEICHAKUBUNOBOSHOKUHOHO |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15034983A JPH0237463B2 (en) | 1983-08-19 | 1983-08-19 | KEEBURUTEICHAKUBUNOBOSHOKUHOHO |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6046381A JPS6046381A (en) | 1985-03-13 |
| JPH0237463B2 true JPH0237463B2 (en) | 1990-08-24 |
Family
ID=15495046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15034983A Expired - Lifetime JPH0237463B2 (en) | 1983-08-19 | 1983-08-19 | KEEBURUTEICHAKUBUNOBOSHOKUHOHO |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0237463B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0455779U (en) * | 1990-09-18 | 1992-05-13 |
-
1983
- 1983-08-19 JP JP15034983A patent/JPH0237463B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0455779U (en) * | 1990-09-18 | 1992-05-13 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6046381A (en) | 1985-03-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3596330A (en) | Anchors for structural tensile members | |
| JP5804375B2 (en) | Multiple anticorrosion cable for dam anchor reinforcement and ground uncurtain dong using the same | |
| JP3754817B2 (en) | Anchor structure | |
| JPS6325132B2 (en) | ||
| JPH0237463B2 (en) | KEEBURUTEICHAKUBUNOBOSHOKUHOHO | |
| JPH0772418B2 (en) | Anchor tension material | |
| JPH0324665Y2 (en) | ||
| JP3317277B2 (en) | Corrosion prevention structure of anchoring part of PC steel | |
| JP2562111B2 (en) | Earth anchor head fixing structure | |
| JP3628626B2 (en) | Anchor cable | |
| JP3543393B2 (en) | How to stop the water at the anchor anchor length | |
| JP2931587B1 (en) | Cable for suspended structure | |
| JP3751412B2 (en) | Permanent anchor | |
| JPS63130821A (en) | Structure of anchor cable | |
| JPH0424490B2 (en) | ||
| JP2584895Y2 (en) | Cut end structure of unbonded PC steel strand | |
| JPS6043478B2 (en) | Corrosion prevention treatment method for cables | |
| JPH0650574Y2 (en) | Unbonded PC cable rust prevention device for out cable | |
| JPH04189974A (en) | Prevention against corrosion for steel pc cable fixation part | |
| JPH0330644B2 (en) | ||
| JPH0322348Y2 (en) | ||
| JPH0137531B2 (en) | ||
| JP2700638B2 (en) | Processing method of anticorrosive tensile material | |
| JPS63217017A (en) | Prevention of corrosion of anchor | |
| JPH0699904B2 (en) | Anchor construction method |