JPH0285420A - How to assemble a PC anchor - Google Patents
How to assemble a PC anchorInfo
- Publication number
- JPH0285420A JPH0285420A JP23256188A JP23256188A JPH0285420A JP H0285420 A JPH0285420 A JP H0285420A JP 23256188 A JP23256188 A JP 23256188A JP 23256188 A JP23256188 A JP 23256188A JP H0285420 A JPH0285420 A JP H0285420A
- Authority
- JP
- Japan
- Prior art keywords
- sheath
- steel wire
- anchor
- hole
- mortar
- 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
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 239000006261 foam material Substances 0.000 claims 1
- 239000004570 mortar (masonry) Substances 0.000 description 10
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 239000011162 core material Substances 0.000 description 4
- 239000004088 foaming agent Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000003566 sealing material Substances 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、地中に挿入して定着するＰＣアンカーにおい
て、シースと鋼線との境界のシール部分の組み立て作業
に関するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an assembly operation of a seal portion at the boundary between a sheath and a steel wire in a PC anchor that is inserted into the ground and fixed therein.
〈従来の技術〉
ＰＣアンカーは、地中にモルタルによって定着する定着
部と、外部から緊張力を与えたときに自由に延びる伸長
部分とから構成しである。<Prior Art> A PC anchor is composed of an anchoring part that is fixed in the ground with mortar and an extension part that freely extends when tension is applied from the outside.
したがって定着部はモルタルで強固に固定する必要があ
るが、伸長する部分はモルタルが付着するようなことが
あってはならず、完全にモルタルとは遮断した状態でな
ければならない。Therefore, the fixing part needs to be firmly fixed with mortar, but the extending part must not have any mortar attached to it and must be completely isolated from the mortar.
〈本発明が解決しようとする問題点〉
ところが従来の方法ではシースの端部の密封性能が不十
分なことがあり、わずがではあってもモルタルがシース
内に侵入してしまい、その結果設計時の計算通りにＰＣ
鋼線を伸長することができない場合があった。<Problems to be solved by the present invention> However, with the conventional method, the sealing performance of the end of the sheath may be insufficient, and mortar may intrude into the sheath, even if only slightly, resulting in PC as calculated at the time of design
There were cases where the steel wire could not be stretched.
特にＰＣ鋼線は複数の素線を緩い角度で撚っであるため
に素線間には谷が形成さる。In particular, since a plurality of strands of PC steel wire are twisted at a gentle angle, valleys are formed between the strands.
そのために捩れた谷に沿ってモルタルが侵入しやすく、
その完全な阻止は容易ではなかった。Therefore, it is easy for mortar to invade along the twisted valley,
Completely stopping it was not easy.
〈本発明の目的〉
本発明は上記のような問題点を改善するためになされた
もので、ＰＣ鋼線に沿ったモルタルの移動、侵入を阻止
することのできるＰＣ鋼線の組み立て方法を提供するこ
とを目的とする。<Objective of the present invention> The present invention was made to improve the above-mentioned problems, and provides a method for assembling a PC steel wire that can prevent mortar from moving or entering along the PC steel wire. The purpose is to
〈本発明の構成〉
〈イ〉全体の構成
ＰＣアンカーの全体の構成は第１図に示す通りの公知の
ものである。<Configuration of the present invention><A> Overall configuration The overall configuration of the PC anchor is a known one as shown in FIG.
すなわちｐｃｍａｐ群を、孔の奥に位置さゼる定着部分
ではそのまま露出させておき、孔口側の伸長部分ではシ
ースＳによって被覆させた構造である。That is, the pcmap group has a structure in which the fixed portion located deep inside the hole is left exposed as it is, and the extended portion on the side of the hole is covered with the sheath S.
〈口〉境界部
シースＳ内部にモルタルが侵入しないように、境界部Ａ
ではそのシールを完全に行わなければならない。<Mouth> To prevent mortar from entering the inside of the boundary sheath S,
Now we have to do that seal completely.
境界部Ａは一箇所に限らず、必要な位置に配置すること
ができる。The boundary portion A is not limited to one location, but can be placed at any required position.
〈ハ〉ｌＲ線の部分シール
一箇所の境界部Ａにおいて、ＰＣ＊ＩｊｌＰの周囲を二
箇所に部分シール部１を形成する。<C> Partial seal part 1 of the lR line At one boundary part A, form two parts around PC*IjlP.
部分シール部１の形成位置は、シースＳを被覆した場合
に、シースＳ端部に当たる位置と、それよりも孔口側の
位置の二箇所が必要である。（第２図）
部分シールの方法は、まず芯材２の周囲に粘着性、弾力
性の大きいシール材３を巻き付ける。When covering the sheath S, the partial seal portion 1 needs to be formed at two locations: a location corresponding to the end of the sheath S, and a location closer to the hole opening than the end of the sheath S. (Fig. 2) In the partial sealing method, first, a highly adhesive and elastic sealing material 3 is wrapped around the core material 2.
（第５図）
芯材２としてはたとえばｐｃｓ＊ｐｍの中心の鋼線や引
き抜き材、あるいは注入パイプなどが利＝ ３ −
用できる。(Fig. 5) As the core material 2, for example, a steel wire or drawn material in the center of pcs*pm, or an injection pipe can be used.
〈二〉鋼線群の取り付は 次に芯材ｌの周囲に複数のＰＣ鋼線Ｐ群を配置する。<2> Installation of steel wire group Next, a plurality of groups of PC steel wires P are arranged around the core material l.
そのままではＰＣ鋼線Ｐがばらばらになってしまうから
、細い鋼線や接着テープなどでその周囲を巻いて所定の
位置に拘束する。If left as is, the PC steel wire P will come apart, so wrap it with thin steel wire or adhesive tape to restrain it in a predetermined position.
すると部分シール部では芯材２に巻いたシール材３がＰ
Ｃ鋼線Ｐの隙間から外部に向けて押し出されてくる。（
第５図）
そこでさらにその周囲を粘着性の大きいテープを巻き付
けたり、シール材３と同様の材料を塗布するなどして包
囲する。（第２図）
こうして包囲した場合にＰＣ鋼線Ｐ群の直径が大きく膨
脹するが、その膨脹の最大直径は外部に被覆するシース
Ｓの内径に等しいか多少大きい直径に設定する。Then, at the partial seal part, the sealing material 3 wrapped around the core material 2 becomes P
It is pushed out from the gap between the C steel wires P. (
(Fig. 5) Then, it is further surrounded by wrapping a highly adhesive tape or applying a material similar to the sealing material 3. (FIG. 2) When surrounded in this way, the diameter of the PC steel wire group P expands greatly, and the maximum diameter of the expansion is set to be equal to or somewhat larger than the inner diameter of the sheath S covering the outside.
こうしてＰＣ鋼線Ｐの２箇所に、ダンゴ状に膨脹させた
部分シール部１の形成が完了する。In this way, the formation of the partially expanded seal portions 1 in the shape of a dumpling is completed at two locations on the PC steel wire P.
〈ホ〉シースの被覆
ＰＣｍＭＰ群においては前記したように自由に伸長する
部分をモルタルの付着から保護する必要がある。<E> Covering the sheath In the PCmMP group, as described above, it is necessary to protect the freely extending portion from adhesion of mortar.
そのためにシースＳで被覆するが、そのシースＳの形状
、材料などは公知のものを使用する。For this purpose, it is covered with a sheath S, and the shape, material, etc. of the sheath S are known.
たとえば周囲に凹凸を形成したコルゲートシースなどが
利用できる。For example, a corrugated sheath with an uneven surface can be used.
シースＳの端は、一方の部分シール部１の位置とほぼ一
致した位置にセットする。The end of the sheath S is set at a position that substantially coincides with the position of one partial seal portion 1.
他の部分シール部１はシースＳ内に位置することになる
。The other partial seal portion 1 will be located within the sheath S.
そこで細い鋼線などで外部からシースＳを拘束して、部
分シール部１とシースＳ内面との付着を良好にする。Therefore, the sheath S is restrained from the outside with a thin steel wire or the like to improve adhesion between the partial seal portion 1 and the inner surface of the sheath S.
〈へ〉発泡硬化剤の注入（第４図）
以上の作業によって、二箇所を部分シール部１で閉塞し
、外周をシースＳで囲った空間が形成される。<F> Injection of foam hardening agent (Fig. 4) By the above operations, a space is formed in which the two locations are closed with the partial seal portion 1 and the outer periphery is surrounded by the sheath S.
この空間の内部に、発泡剤４を注入する。A foaming agent 4 is injected into this space.
注入方法はポンプを使用する方法でも、加圧注久方法で
も、あるいはシースＳをわずかな寸法だけ切り裂いて流
し込む方法でもよい。The injection method may be a method using a pump, a pressurized injection method, or a method in which the sheath S is cut to a small size and poured.
発泡剤４の注入後に注入口を閉塞すると、内部での発泡
が起こり、発泡剤４はＰＣ鋼線Ｐ間の狭い隙間のすみず
みまで侵入して硬化する。When the injection port is closed after injection of the foaming agent 4, foaming occurs inside, and the foaming agent 4 penetrates into every corner of the narrow gap between the PC steel wires P and hardens.
したがって二箇所の部分シール部１の間は完全に密封さ
れることになる。Therefore, the space between the two partial seal portions 1 is completely sealed.
〈ト〉孔への挿入 以上の組み立て作業は孔外の作業場で行う。<G> Insertion into the hole The above assembly work will be done in a workshop outside the hole.
組み立てが完成したら事前に削孔しておいた孔に全体を
挿入し、従来の方法と同様に定着、緊張を行う。Once the assembly is complete, the entire piece is inserted into the hole that has been drilled in advance, and it is fixed and tensioned in the same way as with conventional methods.
〈本発明の効果〉
本発明は上記したようになるから次のような効果を期待
することができる。<Effects of the Present Invention> Since the present invention is as described above, the following effects can be expected.
〈イ〉二箇所を密封した後、その間で発泡させる方法で
ある。<A> This is a method of sealing two places and then foaming between them.
したがって一定の距離を備えた状態でモルタルの侵入に
抵抗することができるので完全なシールが可能である。Therefore, it is possible to resist the intrusion of mortar with a certain distance, so a complete seal is possible.
〈口〉自由長部が完全に確保できるため、アンカー緊張
力が正確に定着部に伝達さる。<Mouth> Since the free length can be completely secured, the anchor tension force is accurately transmitted to the anchoring part.
したがって、計算通りにＰＣ鋼線を伸長することができ
、構造物を変形させたり、破壊させたりすることなく確
実な緊張、定着ができる。Therefore, the PC steel wire can be stretched as calculated, and reliable tension and fixation can be achieved without deforming or destroying the structure.
〈ハ〉以上の記載は境界部をシースの一端に構成する場
合であったが、シースの両端に本発明の境界部を構成す
る場合もあること、あるいは他の公知の構造と組み合わ
せて使用できることももちろんである。<C> Although the above description is about the case where the boundary part is configured at one end of the sheath, it is also possible to configure the boundary part of the present invention at both ends of the sheath, or it can be used in combination with other known structures. Of course.
第１図：アンカーの全体の説明図 第２〜４図：施工順序の説明図 第５図：部分シール部の断面図 Figure 1: Overall illustration of the anchor Figures 2 to 4: Explanatory diagram of construction order Figure 5: Cross-sectional view of partial seal part
Claims (1)
ない部分を地中に定着する形式のアンカーを、孔への挿
入前に孔外で組み立てる方法であって、 ＰＣ鋼線の露出部とシースによる被覆部との境界の組み
立てにおいて、 シースの端に相当する位置、およびそれよりも孔口側の
二箇所で、 ＰＣ鋼線を粘着性の材料で包囲し、 この二箇所の包囲部分を含んだ状態でシースによって被
覆し、 この二箇所の包囲部分と、その両位置を被覆する状態の
シースによって形成される空間の内部に、 発泡性の材料を封入して行う、 ＰＣアンカーの組み立て方法(1) A method of assembling an anchor outside the hole before inserting it into the hole, in which the hole side of the PC steel wire is covered with a sheath and the uncovered part is anchored in the ground, and the PC steel wire When assembling the boundary between the exposed part of the sheath and the part covered by the sheath, the PC steel wire is surrounded with adhesive material at two places, one corresponding to the end of the sheath, and the other on the hole opening side. This is done by enclosing a foam material inside the space formed by the two surrounding parts and the sheath that covers both positions. How to assemble the anchor
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23256188A JPH0285420A (en) | 1988-09-19 | 1988-09-19 | How to assemble a PC anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23256188A JPH0285420A (en) | 1988-09-19 | 1988-09-19 | How to assemble a PC anchor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0285420A true JPH0285420A (en) | 1990-03-26 |
| JPH0559217B2 JPH0559217B2 (en) | 1993-08-30 |
Family
ID=16941262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23256188A Granted JPH0285420A (en) | 1988-09-19 | 1988-09-19 | How to assemble a PC anchor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0285420A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0596132U (en) * | 1992-06-05 | 1993-12-27 | 日特建設株式会社 | Removal anchor water hole stop device |
-
1988
- 1988-09-19 JP JP23256188A patent/JPH0285420A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0596132U (en) * | 1992-06-05 | 1993-12-27 | 日特建設株式会社 | Removal anchor water hole stop device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0559217B2 (en) | 1993-08-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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| LAPS | Cancellation because of no payment of annual fees |