JPH06158657A - Anticorrosion structure of anchor anchorage - Google Patents
Anticorrosion structure of anchor anchorageInfo
- Publication number
- JPH06158657A JPH06158657A JP4335621A JP33562192A JPH06158657A JP H06158657 A JPH06158657 A JP H06158657A JP 4335621 A JP4335621 A JP 4335621A JP 33562192 A JP33562192 A JP 33562192A JP H06158657 A JPH06158657 A JP H06158657A
- Authority
- JP
- Japan
- Prior art keywords
- anchor
- pipe
- joint sheath
- plate
- flange
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 230000000903 blocking effect Effects 0.000 claims abstract description 15
- 238000012856 packing Methods 0.000 claims abstract description 13
- 238000010276 construction Methods 0.000 claims abstract description 6
- 230000003449 preventive effect Effects 0.000 claims description 12
- 229920003002 synthetic resin Polymers 0.000 claims description 2
- 239000000057 synthetic resin Substances 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 abstract description 18
- 230000002265 prevention Effects 0.000 abstract description 4
- 238000005536 corrosion prevention Methods 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 description 9
- 239000004698 Polyethylene Substances 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 7
- -1 polyethylene Polymers 0.000 description 7
- 229920000573 polyethylene Polymers 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000008961 swelling Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
(57)【要約】
【目的】 施工性に優れ、確実な防錆が可能なアンカー
定着部の防食構造を提供する。
【構成】 定着具２とアンカープレート３との間に円形
プレート４を介在し、定着具２で施工壁面に引張鋼材１
の端部を固定すると共に、アンカープレートの貫通口3a
に挿入されたジョイントシース７を介して自由長部の保
護パイプ５を接合するアンカー定着部の防食構造で、ジ
ョイントシース７は、フランジ7aを具えた薄手部7bと、
保護パイプ５に外接する厚手部7cからなり、薄手部7bと
保護パイプ５との間には支圧パイプ９が挿入され、厚手
部7cと保護パイプ５との間に一次止水部となるパッキン
10を設けると共に、支圧パイプ９と厚手部7cとの間に二
次止水部となるＯリング11を設けた。両止水部により確
実な防錆を可能にする。
(57) [Summary] [Purpose] To provide an anticorrosion structure for anchor anchorages that has excellent workability and enables reliable rust prevention. [Structure] A circular plate 4 is interposed between a fixing tool 2 and an anchor plate 3, and a tensile steel material 1 is attached to a construction wall surface by the fixing tool 2.
The end of the anchor plate and the through hole 3a of the anchor plate.
The corrosion prevention structure of the anchor fixing portion that joins the protective pipe 5 of the free length portion through the joint sheath 7 inserted into the joint sheath 7, and the joint sheath 7 has a thin portion 7b having a flange 7a,
A packing which is composed of a thick portion 7c circumscribing the protection pipe 5, a pressure bearing pipe 9 is inserted between the thin portion 7b and the protection pipe 5, and serves as a primary water blocking portion between the thick portion 7c and the protection pipe 5.
10 is provided, and an O-ring 11 serving as a secondary water shutoff portion is provided between the bearing pipe 9 and the thick portion 7c. Both water blocking parts enable reliable rust prevention.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、法面等の地崩れ、山崩
れなどを防ぐために用いるアンカー頭部及び自由長部と
の接合部の防食構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anticorrosion structure of an anchor head portion and a joint portion with a free length portion which is used for preventing landslides such as slopes and landslides.
【０００２】[0002]
【従来の技術】アンカー定着部の防食に関する技術とし
ては、例えば、実公平3-29385 号公報に示すものがあ
る。これは、ベアリングプレートとアンカーヘッドとの
間にベアリングプレートよりも小径で、外周にテーパー
ネジを形成した別のプレートを介在させ、そのプレート
に、自由長部のポリエチレンパイプとベアリングプレー
トとを接続するトランペットパイプの先端を溶接したも
のである。又、トランペットパイプの内周に止水のため
パッキンを配置し、さらに前記プレート外周のテーパー
ネジにオイルキャップを螺合して固定するものである
（従来技術Ａ）。2. Description of the Related Art As a technique for preventing corrosion of an anchor fixing portion, for example, there is a technique disclosed in Japanese Utility Model Publication No. 3-29385. This is to interpose another plate having a smaller diameter than the bearing plate and having a taper screw on the outer periphery between the bearing plate and the anchor head, and connecting the polyethylene pipe of the free length portion and the bearing plate to the plate. The tip of the trumpet pipe is welded. In addition, a packing is arranged on the inner circumference of the trumpet pipe to stop water, and an oil cap is screwed and fixed to the taper screw on the outer circumference of the plate (prior art A).
【０００３】又、特公平4-41212 号公報には、自由長部
の保護パイプであるシース材と支圧板との間を、フラン
ジ付きのガイド管にて接合したものが開示されている。
ガイド管のフランジを支圧板に接合し、シース材の先端
を、ガイド管の内周に形成されたネジに螺合して接合を
行うのである。又、アンカーヘッド部分にオイルキャッ
プを被せ、防食性を確保している（従来技術Ｂ）。Further, Japanese Patent Publication No. 4-41212 discloses that a sheath material which is a protection pipe of a free length portion and a pressure bearing plate are joined by a guide tube with a flange.
The flange of the guide tube is joined to the bearing plate, and the tip of the sheath material is screwed into a screw formed on the inner circumference of the guide tube to join. Further, the anchor head portion is covered with an oil cap to ensure corrosion resistance (prior art B).
【０００４】さらに、実公平1-98232 号公報には、頭部
支圧板の自由長部側に、支圧板と同じ大きさのフランジ
を有する頭部シースを配置し、頭部シースへ自由長部の
シースを挿入して接合を行っている。そして、頭部シー
スと自由長部シースとの間にダンパーを配置し、アンカ
ーヘッド部分を支圧板にボルトにて取り付けできるオイ
ルキャップで覆い、防食性を確保している（従来技術
Ｃ）。Further, in Japanese Utility Model Publication No. 1-98232, a head sheath having a flange of the same size as the pressure support plate is arranged on the side of the free length part of the head pressure support plate, and the free length part is attached to the head sheath. The sheath is inserted and joined. Then, a damper is arranged between the head sheath and the free length sheath, and the anchor head portion is covered with an oil cap that can be attached to the bearing plate with bolts to ensure corrosion resistance (prior art C).
【０００５】[0005]
【発明が解決しようとする課題】しかし、上記の従来技
術は以下のような欠点があった。先ず、従来技術Ａは、
自由長部のポリエチレンパイプとトランペットパイプと
の間にパッキンを配しているが、 加工誤差によりポリエチレンパイプとパッキンが密着
するとは限らない。 鋼製のトランペットパイプは、運搬中などに変形する
ことがあり、この場合、ポリエチレンパイプとの間の止
水が十分行えないこともある。 パッキンに膨潤性ゴムを用いた場合、止水効果はかな
り期待できるものの、膨潤するまでの間に腐食水が浸入
する可能性がある。 トランペットパイプの運搬中の変形により、ポリエチ
レンパイプの挿入に支障を来すこともあり、そのために
トランペットパイプの内径を大きくすると止水効果が小
さくなる。 又、トランペットパイプとプレート溶接しているため重
量があり、足場の悪いアンカー工事では施工性に劣る
上、コストが高くなる。However, the above-mentioned prior art has the following drawbacks. First, the prior art A is
The packing is placed between the polyethylene pipe of the free length and the trumpet pipe, but the polyethylene pipe and the packing do not always adhere to each other due to processing error. The trumpet pipe made of steel may be deformed during transportation, and in this case, water blocking between the pipe and the polyethylene pipe may not be sufficiently performed. When a swelling rubber is used for the packing, a water-stopping effect can be expected, but corrosive water may enter before swelling. The deformation of the trumpet pipe during transportation may hinder the insertion of the polyethylene pipe. Therefore, increasing the inner diameter of the trumpet pipe reduces the water blocking effect. Moreover, since the trumpet pipe and the plate are welded to each other, they are heavy, which makes the anchor construction with poor scaffolding poor in workability and high in cost.
【０００６】次に従来技術Ｂでは、保護パイプであるシ
ース材とガイド管は、ネジによる螺合で接合されている
が、 保護パイプ（シース材）を所定の位置に配置しなけれ
ば螺合できない。即ち、長さの調整が難しく、施工性に
も劣っている。 螺合構造がピッチの粗いねじ形状であるため、ねじ部
分に樹脂を塗布したとしても確実な止水効果は得られな
い。[0006] Next, in the prior art B, the sheath material which is the protective pipe and the guide tube are joined by screwing with a screw. However, the protective pipe (sheath material) cannot be screwed unless it is arranged at a predetermined position. . That is, it is difficult to adjust the length and the workability is poor. Since the threaded structure has a thread shape with a coarse pitch, a reliable waterproofing effect cannot be obtained even if resin is applied to the threaded portion.
【０００７】又、従来技術Ｃでは、 保護パイプとフランジ付き頭部シースとの間のダンパ
ーによる止水構造は、前記従来技術Ａと同様の欠点があ
る。 又、アンカー頭部の防食に用いるキャップは、頭部支
圧板に数箇所のボルトで締め付ける構造になっており施
工性に劣る。Further, in the prior art C, the water stop structure by the damper between the protective pipe and the head sheath with the flange has the same drawback as the prior art A. Further, the cap used to prevent corrosion of the anchor head has a structure in which it is fastened to the head bearing plate with bolts at several places, which is inferior in workability.
【０００８】以上のように、従来のものはアンカー頭部
の防食構造特に削孔内の自由長部の保護パイプに沿って
浸入する腐食水に対する止水効果が確実でなく、且つ施
工性にも劣るものであった。[0008] As described above, the conventional structure is not assured of an anticorrosive structure for the anchor head, in particular the water-stopping effect against the corrosive water that invades along the protective pipe of the free length part in the drilled hole, and also in the workability. It was inferior.
【０００９】従って、本発明は上記の課題を解決するた
めになされたものであって、その目的は、施工性に優
れ、確実な防錆が可能なアンカー定着部の防食構造を提
供することにある。Therefore, the present invention has been made to solve the above problems, and an object thereof is to provide an anticorrosion structure of an anchor fixing portion which is excellent in workability and capable of reliable rust prevention. is there.
【００１０】[0010]
【課題を解決するための手段】前記の目的を達成するた
めに、本発明の特徴は、定着具とアンカープレートとの
間に円形プレートを介在し、前記定着具で施工壁面に引
張鋼材の端部を固定すると共に、前記アンカープレート
の貫通口に挿入されたジョイントシースを介して自由長
部の保護パイプを接合するアンカー定着部の防食構造で
あって、前記ジョイントシースは、フランジを具えた薄
手部と、保護パイプに外接する厚手部からなり、前記薄
手部と保護パイプとの間には支圧パイプが挿入され、厚
手部と保護パイプとの間に一次止水部を設けると共に、
支圧パイプと厚手部との間に二次止水部を設けたことに
ある。In order to achieve the above object, the present invention is characterized in that a circular plate is interposed between a fixing tool and an anchor plate, and an end of a tensile steel material is attached to a construction wall surface by the fixing tool. The structure of the anchor fixing portion, which fixes a portion of the anchor plate and joins a protection pipe of a free length portion through a joint sheath inserted into a through hole of the anchor plate, wherein the joint sheath is a thin member having a flange. And a thick portion that is circumscribed to the protective pipe, a pressure-bearing pipe is inserted between the thin portion and the protective pipe, and a primary water blocking portion is provided between the thick portion and the protective pipe.
There is a secondary water stop between the pressure bearing pipe and the thick part.
【００１１】ここで、ジョイントシースは合成樹脂製で
あることが好ましい。又、支圧パイプがジョイントシー
スのフランジから突出できる長さとすれば、引張鋼材を
緊張した際、円形プレートが支圧パイプを介して二次止
水部を圧縮でき、止水性向上に好適である。さらに、ジ
ョイントシースと円形プレートとの密着性を確保するに
は、円形プレートがジョイントシースのフランジと当接
する部分に座ぐり部を設け、この座ぐり部の深さをジョ
イントシースのフランジの厚さよりも小さくすることが
好適である。そして、円形プレート外周にねじ加工を施
し、これに防錆キャップを螺合すると共に、防錆キャッ
プとアンカープレートとの当接部に止水部を形成すれば
一層確実な耐腐食性が期待できる。The joint sheath is preferably made of synthetic resin. Further, if the pressure bearing pipe has such a length that it can protrude from the flange of the joint sheath, the circular plate can compress the secondary water blocking portion via the pressure bearing pipe when the tensile steel material is tensioned, which is suitable for improving water blocking performance. . Further, in order to ensure the close contact between the joint sheath and the circular plate, a counterbore is provided at the portion where the circular plate contacts the flange of the joint sheath, and the depth of this counterbore is determined by the thickness of the flange of the joint sheath. Is also preferably small. Further, if the outer circumference of the circular plate is threaded, a rust preventive cap is screwed onto this, and a water blocking part is formed at the contact part between the rust preventive cap and the anchor plate, more reliable corrosion resistance can be expected. .
【００１２】[0012]
【実施例】以下、図に基づいて、本発明の一実施例を説
明する。図１はアンカー定着部の構造を示す概略図で、
引張鋼材１の一端を施工壁面に固定する定着具２、アン
カープレート３及び円形プレート４等で構成され、後述
のように、前記自由長部との間を密封して所定の緊張力
を与える構成となっている。各部の構成は以下の通りで
ある。An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic view showing the structure of the anchor fixing portion,
It is composed of a fixing tool 2 for fixing one end of the tensile steel material 1 to a construction wall surface, an anchor plate 3, a circular plate 4 and the like, and as described later, seals between the free length portion and gives a predetermined tension force. Has become. The structure of each part is as follows.
【００１３】（引張鋼材）アンカー定着部からの緊張力
を、定着長部のアンカー体（図示せず）に伝達させるも
ので、例えば、その全長にわたってねじ状のリブが形成
された異形ＰＣ鋼棒等が用いられる。(Tensile steel material) The tension force from the anchor fixing portion is transmitted to the anchor body (not shown) of the fixing long portion. For example, a deformed PC steel rod in which a screw-shaped rib is formed over the entire length thereof. Etc. are used.
【００１４】（保護パイプ）このような引張鋼材１の自
由長部は、例えば、ポリエチレンの保護パイプ５で覆わ
れ、保護パイプ５と引張鋼材１との間には防錆材６が注
入されている。(Protective Pipe) The free length portion of the tensile steel material 1 is covered with, for example, a polyethylene protective pipe 5, and a rust preventive material 6 is injected between the protective pipe 5 and the tensile steel material 1. There is.
【００１５】（アンカープレート）アンカープレート３
は、アンカー定着部全体の支持を行う円盤状のもので、
中央に貫通口3aを有し、そこに後に述べるジョイントシ
ース７が内接して接合される。(Anchor plate) Anchor plate 3
Is a disk-shaped object that supports the entire anchor fixing part.
A through hole 3a is provided in the center, and a joint sheath 7 to be described later is inscribed and joined thereto.
【００１６】（定着具及び円形プレート）円形プレート
４は、外周にねじ加工がされていると共に、中央に引張
鋼材１が通る円孔を具え、アンカープレート３の上に配
置される。そして、次に述べるジョイントシースのフラ
ンジと当接する部分に座ぐり部4aが形成されている。こ
の座ぐり部4aの深さは、ジョイントシースのフランジの
厚さよりも小さいことが望ましい。一方、定着具２は、
引張鋼材１の一端に嵌合し、前記円形プレート４を圧接
して引張鋼材１の一端を固定することでその緊張力を保
持する。(Fixing Tool and Circular Plate) The circular plate 4 is provided on the anchor plate 3 with a screw hole on the outer periphery and a circular hole through which the tensile steel material 1 passes at the center. Then, a spot facing portion 4a is formed in a portion that comes into contact with the flange of the joint sheath described below. The depth of the spot facing 4a is preferably smaller than the thickness of the flange of the joint sheath. On the other hand, the fixing tool 2 is
The tension force is held by fitting the one end of the tensile steel material 1 and pressing the circular plate 4 to fix the one end of the tensile steel material 1.
【００１７】（ジョイントシース）ジョイントシース７
は、例えばポリエチレンで構成され、一端にフランジ7a
を有する円筒状のものである。このフランジ部を除き、
全長にわたって均一な外径を有しているが、フランジ側
開口端から軸方向の略中央部に至るまでの内径が、その
反対側（他端）の内径よりも大きく構成されている。即
ち、該保護パイプの内周面は、フランジ側が薄く（薄手
部7b）、その反対側が厚い（厚手部7c）ステップ状に形
成されている。又、該保護パイプ他端側の内周面には、
一次止水部８を構成するためのパッキン溝7dが形成され
ている。(Joint sheath) Joint sheath 7
Is made of polyethylene, for example, and has a flange 7a at one end.
It has a cylindrical shape. Excluding this flange
Although it has a uniform outer diameter over the entire length, the inner diameter from the flange-side open end to the substantially central portion in the axial direction is larger than the inner diameter on the opposite side (the other end). That is, the inner peripheral surface of the protective pipe is formed in a step shape in which the flange side is thin (thin portion 7b) and the opposite side is thick (thick portion 7c). Also, on the inner peripheral surface on the other end side of the protective pipe,
A packing groove 7d for forming the primary water blocking portion 8 is formed.
【００１８】（支圧パイプ）これも、前記ジョイントシ
ース７と共に自由長部との接合、止水に用いられる円筒
状のものである。その外径は、ジョイントシースの薄手
部内径にほぼ等しく、内径は、同厚手部内径にほぼ等し
い。又、次に述べるように、ジョイントシースの薄手部
7b終端にＯリングを収納し、この支圧パイプ９を薄手部
7bに内装した際、ジョイントシースのフランジ側開口端
より若干突出する長さに形成されている。(Pressure Bearing Pipe) This is also a cylindrical pipe used for joining with the joint sheath 7 to the free length portion and for stopping water. The outer diameter is approximately equal to the inner diameter of the thin portion of the joint sheath, and the inner diameter is substantially equal to the inner diameter of the thick portion of the joint sheath. Also, as described below, the thin part of the joint sheath
The O-ring is stored at the end of 7b, and this bearing pipe 9 is
When installed in 7b, it is formed to have a length that slightly protrudes from the flange-side opening end of the joint sheath.
【００１９】アンカープレート３と保護パイプ５との接
合は、先ず、ジョイントシース７のパッキン溝7dに膨潤
性のパッキン10を収納し、さらに、その薄手部7b終端に
もＯリング11を収納して、このジョイントシース７をア
ンカープレート３の貫通口3aに挿入する。次に、自由長
部の保護パイプ端部をジョイントシース７に挿入し、そ
のフランジ7aが貫通口3aの周縁に当接するよう配置す
る。そして、ジョイントシース７の薄手部内側と保護パ
イプ５との間に前記支圧パイプ９を挿入する。To connect the anchor plate 3 and the protective pipe 5, first, the swelling packing 10 is housed in the packing groove 7d of the joint sheath 7, and the O-ring 11 is also housed at the end of the thin portion 7b. The joint sheath 7 is inserted into the through hole 3a of the anchor plate 3. Next, the end of the protective pipe of the free length portion is inserted into the joint sheath 7, and the flange 7a is arranged so as to contact the peripheral edge of the through hole 3a. Then, the bearing pipe 9 is inserted between the inside of the thin portion of the joint sheath 7 and the protective pipe 5.
【００２０】ここで、引張鋼材の緊張前は、前記のよう
に、支圧パイプ９がジョイントシースのフランジ7aより
突出しているため、円形プレート４とアンカープレート
３との間には、少なくともこの突出分の隙間がある。し
かし、緊張が行われると、緊張力で円形プレートの座ぐ
り部4aは支圧パイプ９をＯリング11側へ押し込み、ジョ
イントシースのフランジ7aと密着する。そのため、Ｏリ
ング11は支圧パイプ９一端とジョイントシース薄手部終
端との間で固定、圧縮され、変形することでシール効果
を高めるのである。以上の構成により、パッキン10によ
る一次止水部と、Ｏリング11による二次止水部が形成さ
れる。Before tensioning the tensile steel material, since the bearing pipe 9 projects from the flange 7a of the joint sheath as described above, at least this projection is provided between the circular plate 4 and the anchor plate 3. There is a minute gap. However, when tension is applied, the counterbore portion 4a of the circular plate pushes the bearing pipe 9 toward the O-ring 11 side by the tension force and makes close contact with the flange 7a of the joint sheath. Therefore, the O-ring 11 is fixed, compressed, and deformed between one end of the bearing pipe 9 and the end of the thin portion of the joint sheath to enhance the sealing effect. With the above configuration, the primary water stop portion by the packing 10 and the secondary water stop portion by the O-ring 11 are formed.
【００２１】（防錆キャップ）防錆キャップ13は、定着
部を覆うカップ状のもので、前記円形プレート外周のね
じに螺着される。ここで、アンカープレート３との当接
部にはパッキン、例えばＯリング14が装着されているた
め、防錆キャップを螺合すれば、その開口縁とアンカー
プレートとの間でＯリングを圧縮変形でき、防錆効果の
高い止水部を形成することができる。又、キャップ内空
間に防錆材15を充填して、より耐食性の向上を図ってい
る。(Rustproof Cap) The rustproof cap 13 is a cup-shaped member that covers the fixing portion, and is screwed onto the screw on the outer circumference of the circular plate. Here, since a packing, for example, an O-ring 14 is attached to the contact portion with the anchor plate 3, if the rust preventive cap is screwed, the O-ring is compressed and deformed between the opening edge and the anchor plate. It is possible to form a water blocking part having a high rust preventive effect. Further, the rust preventive material 15 is filled in the space inside the cap to further improve the corrosion resistance.
【００２２】[0022]
【発明の効果】以上説明したように、本発明防錆構造に
よれば、次のような効果が期待できる。 円形プレートとジョイントシースを分離しているの
で、軽量で取り扱い易く、施工に際して保護パイプとジ
ョイントシースとの接合を容易に行うことができる。 円形プレートの座ぐり部がジョイントシースのフラン
ジと密着できるため腐食水の浸入を防ぐことができる。 ジョイントシースと支圧パイプを用い、緊張力を利用
してこれらの間でＯリングを圧縮、変形させることで、
高い止水効果を得ることができる。外部からの腐食水
は、先ず一次止水部で阻止され、さらに二次止水部でも
阻止できるため、自由長部は確実な防錆構造とすること
ができる。 又、定着部全体は、防錆キャップで覆われているた
め、アンカー定着部の防錆も確実である。特に、防錆キ
ャップが円形プレートに螺合され、さらにＯリングを圧
縮変形させて止水を行っているため、防錆キャップとア
ンカープレートとの間からの浸水も確実に防止できる。As described above, according to the rustproof structure of the present invention, the following effects can be expected. Since the circular plate and the joint sheath are separated from each other, they are lightweight and easy to handle, and the protective pipe and the joint sheath can be easily joined at the time of construction. Since the spot facing part of the circular plate can be brought into close contact with the flange of the joint sheath, intrusion of corrosive water can be prevented. By using a joint sheath and a pressure bearing pipe and compressing and deforming the O-ring between them by utilizing the tension force,
A high water blocking effect can be obtained. Corrosion water from the outside is first blocked by the primary water blocking portion and further blocked by the secondary water blocking portion, so that the free length portion can have a reliable rustproof structure. Further, since the entire fixing portion is covered with the rust preventive cap, rust prevention of the anchor fixing portion is sure. In particular, since the rust preventive cap is screwed onto the circular plate and the O-ring is further compressed and deformed to stop water, it is possible to reliably prevent water from entering between the rust preventive cap and the anchor plate.
【図１】アンカー定着部付近の断面図である。FIG. 1 is a cross-sectional view near an anchor fixing portion.
１ 引張鋼材 ２ 定着具 ３ アンカープレート 3a 貫通口 ４ 円形プレート 4a 座ぐり部 ５ 保護パイプ ６ 防錆材 ７ ジョイントシース 7a フランジ 7b 薄手部 7c 厚手部 7d パッキン溝 ９ 支圧パイプ 10 パッキン 11 Ｏリング 13 防錆キャップ 14 Ｏリング 15 防錆材 1 Tensile steel material 2 Fixing tool 3 Anchor plate 3a Through hole 4 Circular plate 4a Counterbore part 5 Protective pipe 6 Rust preventive material 7 Joint sheath 7a Flange 7b Thin part 7c Thick part 7d Packing groove 9 Bearing pipe 10 Packing 11 O-ring 13 Anti-corrosion cap 14 O-ring 15 Anti-corrosion material
Claims (5)
プレートを介在し、前記定着具で施工壁面に引張鋼材の
端部を固定すると共に、前記アンカープレートの貫通口
に挿入されたジョイントシースを介して自由長部の保護
パイプを接合するアンカー定着部の防食構造であって、
前記ジョイントシースは、フランジを具えた薄手部と、
保護パイプに外接する厚手部からなり、前記薄手部と保
護パイプとの間には支圧パイプが挿入され、厚手部と保
護パイプとの間に一次止水部を設けると共に、支圧パイ
プと厚手部との間に二次止水部を設けたことを特徴とす
るアンカー定着部の防食構造。1. A circular plate is interposed between a fixing tool and an anchor plate to fix an end portion of a tensile steel material to a construction wall surface by the fixing tool, and a joint sheath inserted into a through hole of the anchor plate. An anticorrosion structure of the anchor fixing part that joins the protection pipe of the free length part through
The joint sheath has a thin portion with a flange,
It consists of a thick part circumscribing the protection pipe, and a bearing pipe is inserted between the thin part and the protection pipe, and a primary water stop part is provided between the thick part and the protection pipe. An anticorrosion structure for the anchor fixing part, which is characterized in that a secondary water blocking part is provided between the part and the part.
とを特徴とする請求項１記載の定着部の防食構造。2. The anticorrosion structure for a fixing portion according to claim 1, wherein the joint sheath is made of synthetic resin.
支圧パイプを介して二次止水部を圧縮できるよう、支圧
パイプをその一端がジョイントシースのフランジから突
出できる長さとしたことを特徴とする請求項１又は２記
載の定着部の防食構造。3. The bearing pipe has a length such that one end of the bearing plate can project from the flange of the joint sheath so that the circular plate can compress the secondary water blocking portion via the bearing pipe when the tensile steel material is tensioned. The anticorrosion structure of the fixing portion according to claim 1 or 2.
ンジと当接する部分に、座ぐり部を具え、該座ぐり部の
深さが、ジョイントシースのフランジの厚さよりも小さ
いことを特徴とする請求項１、２又は３記載のアンカー
定着部の防食構造。4. The counterbore is provided at a portion where the circular plate abuts the flange of the joint sheath, and the depth of the counterbore is smaller than the thickness of the flange of the joint sheath. 2. The anticorrosion structure of the anchor fixing portion according to 2 or 3.
れに防錆キャップを螺合すると共に、前記防錆キャップ
とアンカープレートとの当接部にパッキンを圧縮変形し
て止水部を形成したことを特徴とする請求項１、２、３
又は４記載のアンカー定着部の防食構造。5. A screw is applied to the outer periphery of the circular plate, a rust preventive cap is screwed onto the screw, and the packing is compressed and deformed at the contact portion between the rust preventive cap and the anchor plate to form a water stop. Claims 1, 2, 3 characterized in that
Alternatively, the anticorrosion structure of the anchor fixing portion according to 4 above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33562192A JP2765416B2 (en) | 1992-11-19 | 1992-11-19 | Anticorrosion structure of anchor anchoring part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33562192A JP2765416B2 (en) | 1992-11-19 | 1992-11-19 | Anticorrosion structure of anchor anchoring part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06158657A true JPH06158657A (en) | 1994-06-07 |
| JP2765416B2 JP2765416B2 (en) | 1998-06-18 |
Family
ID=18290640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33562192A Expired - Lifetime JP2765416B2 (en) | 1992-11-19 | 1992-11-19 | Anticorrosion structure of anchor anchoring part |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2765416B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08311869A (en) * | 1995-05-19 | 1996-11-26 | V S L Japan Kk | Head seal structure of anchor for ground burial |
| JP2021188312A (en) * | 2020-05-27 | 2021-12-13 | 弘和産業株式会社 | Anchorage structure for head of tendon |
-
1992
- 1992-11-19 JP JP33562192A patent/JP2765416B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08311869A (en) * | 1995-05-19 | 1996-11-26 | V S L Japan Kk | Head seal structure of anchor for ground burial |
| JP2021188312A (en) * | 2020-05-27 | 2021-12-13 | 弘和産業株式会社 | Anchorage structure for head of tendon |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2765416B2 (en) | 1998-06-18 |
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