JPH10115097A - Covered cable composed of pc-steel material and its anchoring method - Google Patents

Covered cable composed of pc-steel material and its anchoring method

Info

Publication number
JPH10115097A
JPH10115097A JP26861496A JP26861496A JPH10115097A JP H10115097 A JPH10115097 A JP H10115097A JP 26861496 A JP26861496 A JP 26861496A JP 26861496 A JP26861496 A JP 26861496A JP H10115097 A JPH10115097 A JP H10115097A
Authority
JP
Japan
Prior art keywords
strand
cable
fixing
spacer
steel
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
Application number
JP26861496A
Other languages
Japanese (ja)
Other versions
JP3587632B2 (en
Inventor
Junichi Todo
純一 藤堂
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kobelco Wire Co Ltd
Original Assignee
Shinko Wire Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shinko Wire Co Ltd filed Critical Shinko Wire Co Ltd
Priority to JP26861496A priority Critical patent/JP3587632B2/en
Publication of JPH10115097A publication Critical patent/JPH10115097A/en
Application granted granted Critical
Publication of JP3587632B2 publication Critical patent/JP3587632B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Bridges Or Land Bridges (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Ropes Or Cables (AREA)

Abstract

PROBLEM TO BE SOLVED: To rationalize a concrete structure reinforcing work and to heighten its reliability by carrying out the fitting of an anchoring tool and tensing work as the regular arrangement of a PC strand at the time of cable-processing is maintained. SOLUTION: In a covered cable 1 composed of PC steel material, the covered layer 4 of a part 1A of a fixed length at both the ends of a covered cable 1 composed of PC steel material unitedly covered with the covered layer 4 is removed, and each strand 3 of a fixed length is dissociated from the end of this part. A spacer 5 which is made of a bendable and restorable material such as a flexible thin plate and provided with a strand inserting hole having an arrangement the same as the anchoring hole of an anchoring tool used at a construction site is fittedly inserted in the middle part of the strand 3, and in order to prevent the movement of the spacer 5 and the dissociation of the end part of each strand 3, an emergency covering material 7 such as a tape and a sheet is covered on a portion including a partial or whole spacer 5 having the removed covered layer 4 so as to be easily detachable at the construction site.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、セメントモルタル
等の充填材を必要としないノングラウト型のケーブルシ
ステムによるコンクリート構造物補強工法に用いるPC
(prestressed concrete)緊張材に適用されるPC鋼材
から成る被覆ケーブルならびに前記補強工法に実施して
好適なケーブル定着方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a PC used in a concrete structure reinforcing method using a non-grout type cable system which does not require a filler such as cement mortar.
(Prestressed Concrete) The present invention relates to a coated cable made of PC steel applied to a tendon and a cable fixing method suitable for the reinforcing method.

【0002】[0002]

【従来の技術】PC鋼材から成る被覆ケーブルは、ノン
グラウト型のケーブルシステムによるコンクリート構造
物補強工法に広く採用されてきている。ノングラウト型
のケーブルシステムとは、鉄筋コンクリート製の橋桁の
内部空間にPC鋼材から成るケーブル等の緊張材を露出
状態で張架して鉄筋コンクリート層に貫通させた後、定
着ブロックとウエッジを備える定着具で端部を定着し、
プレストレス導入し緊張させて使用する例にも見られる
ように、グラウト不要で現場工事の省力化、省工程化に
役立つ利点があり、かつ、取り替えが可能なこと等の特
徴を有することによって、最近に至り各分野で広く利用
されている。
2. Description of the Related Art Insulated cables made of PC steel have been widely used in a method of reinforcing a concrete structure by a non-grout type cable system. A non-grout type cable system is a fixing device having a fixing block and a wedge after a tension member such as a cable made of PC steel is stretched in an exposed state and penetrated through the reinforced concrete layer in the inner space of a reinforced concrete bridge girder. Fix the end with
As seen in the example of introducing prestress and using tension, there is an advantage that grout is unnecessary, labor saving of site construction, process saving is possible, and by having features such as being replaceable, Recently, it has been widely used in various fields.

【0003】PC緊張材としての被覆ケーブルは、亜鉛
メッキ,樹脂コート,グリースと樹脂コート等の防錆処
理が施された複数本のPC鋼より線をパラレル又はセミ
パラレルに束ね加工された後、さらにその外側に高密度
ポリエチレン等の被覆層が一体に密着被覆された耐蝕性
に優れてなる構造の被覆ケーブルである。
[0003] A coated cable as a PC tendon material is obtained by bundling a plurality of PC steel strands, which have been subjected to rust-proofing treatment such as galvanization, resin coating, grease and resin coating, in parallel or semi-parallel. Furthermore, a coated cable having a structure excellent in corrosion resistance, in which a coating layer of high-density polyethylene or the like is integrally and closely covered on the outside thereof.

【0004】このような被覆ケーブルを用いて工事現場
で定着施工するには、従来は、所定の長さに切断加工さ
れ、かつ、その両端部における所定長さの部分の被覆層
が取り除かれている被覆ケーブルを鉄筋コンクリート層
の挿通用孔に貫通して引出し定着ブロックとウエッジと
によって定着させるようにしている。この場合、現場作
業時において、被覆層が取り除かれて解離しているスト
ランド端部を、最も納まりが良いと判断される配列で定
着具に取り付けていた。
Conventionally, in order to carry out fixing work at a construction site using such a coated cable, the cable is cut to a predetermined length and the coating layer of a predetermined length at both ends is removed. The covered cable is passed through the insertion hole of the reinforced concrete layer and is drawn out and fixed by the fixing block and the wedge. In this case, at the time of the on-site work, the ends of the strands from which the coating layer has been removed and dissociated are attached to the fixing device in an arrangement determined to be the best fit.

【0005】[0005]

【発明が解決しようとする課題】ところが、図7に例示
されるように、殊にストランド本数が多い被覆ケーブル
を使用するような場合には、端部の被覆層除去部におい
てPC鋼より線が解離して工場側でケーブル加工した際
のPC鋼より線の配列が保持されないで崩れた状態とな
って鉄筋コンクリート層の挿通用孔に貫通されるように
なることが多くて、しかも当初の配列状態が判らないた
めにこの崩れた状態が外部から視認しにくいことから、
納まりが良いと作業者が判断して定着具に取付けた時
に、図7においてケーブル1側のストランド3の連続番
号が付された正常な配列と、定着具を構成する定着ブロ
ック8側の対応する連続番号が付された配列の定着用孔
10とが正しく合致しなくなることがあって、一部のP
C鋼より線が鉄筋コンクリート層の挿通用孔内でクロス
した状態となることがある。
However, as illustrated in FIG. 7, when a coated cable having a large number of strands is used, a PC steel stranded wire is used at the end of the coating layer removed portion. When the cable is disassembled and processed at the factory side, the arrangement of the strands of PC steel is not maintained, and it is often broken and penetrated through the insertion hole of the reinforced concrete layer, and the initial arrangement state Because this collapsed state is difficult to see from the outside because it can not be understood,
When the worker determines that the cable is fit and attaches it to the fixing device, the normal arrangement of the serial numbers of the strands 3 on the cable 1 side in FIG. 7 corresponds to the fixing block 8 side constituting the fixing device. The fixing holes 10 of the serially numbered array may not be correctly aligned, and some P
The stranded C steel wire may cross in the insertion hole of the reinforced concrete layer.

【0006】このような状態でケーブルの緊張作業を行
うと、PC鋼より線同士の摩擦が生じて特にクロス部分
での摩擦が過大となり、緊張時において、所定の導入力
が得られないばかりか、時によってはPC鋼より線の表
面に擦過傷等の損傷が生じて、PC緊張材としての性能
を著しく低下させるおそれがあった。しかしながら、現
状ではこれを避けるためとして、最も納まりが良いと判
断される配列を熟練技術者による「勘」を頼りに現場に
おいて探し求めて、定着具を取付けるようにしている
が、それでもケーブルを常に最良の緊張力が発揮される
状態で施工するにはかなりの労力を要した。
When the cable is tensioned in such a state, friction occurs between the wires of the PC steel, and the friction particularly at the cross portion becomes excessive, so that not only a predetermined introduction force cannot be obtained at the time of tension. In some cases, damage such as abrasion may occur on the surface of the PC steel strand, and the performance as a PC tendon may be significantly reduced. However, in order to avoid this, at the present time, an expert is sought to find the arrangement that is determined to be the best fit on the spot, relying on the “intuition” of a skilled technician, and attaches the fixing device. It took a considerable amount of labor to perform the work in a state where the tension was exhibited.

【0007】本発明は、このような問題点を解消するべ
く成されたものであり、本発明の目的は、従来の場合の
如き現地での施工上煩わしい作業を排除して、熟練者に
限らず誰が作業した場合でもPC鋼より線のクロスによ
る崩れを生じさせないで、ケーブル加工時のPC鋼より
線の正常な配列を保持したままの定着具取付け及び緊張
作業が実現されるようにすることによって、コンクリー
ト構造物補強作業の合理化並びに信頼性の高揚を図らせ
ることにある。
[0007] The present invention has been made to solve such problems, and an object of the present invention is to eliminate the troublesome work on site work as in the conventional case, and to restrict the work to skilled workers. No matter who is working, the fixing of the fixing tool and the tensioning work while maintaining the normal arrangement of the PC steel strands at the time of cable processing will be realized without causing the collapse of the PC steel strands due to the cross. Accordingly, it is an object of the present invention to rationalize the work of reinforcing a concrete structure and enhance reliability.

【0008】[0008]

【課題を解決するための手段】本発明は、上記の目的を
達成するため以下に述べる構成としたものである。即
ち、本発明に係る請求項1記載の発明は、PC鋼より線
からなる複数本のストランドをパラレル又はセミパラレ
ルに束ね加工し、さらにその外側に被覆層を一体に被覆
させて形成されるPC鋼材から成る被覆ケーブルを所定
の長さに切断加工し、かつ、コイル状に巻取らせてなる
PC鋼材から成る被覆ケーブルであって、その両端部に
おける所定長さの部分の被覆層が取り除かれ、この部分
の端末から一定長さに亘る各ストランドが解離されてい
て、それらストランドの中間部には、可撓性薄板等の曲
げ変形及び復元が可能な材料からなり、かつ、工事現場
で使用される定着具の定着用孔と同一配列のストランド
介挿用孔を備えるスペーサが嵌挿されているとともに、
被覆層が取り除かれている前記部分の一部長または全長
におけるスペーサを含む個所に対して、このスペーサの
移動及び各ストランドの端末部の解離を防ぐためとし
て、テープ、シートなどの応急用外被材が前記工事現場
で容易に取り外し可能なように被着されていることを特
徴とする。
The present invention has the following configuration to achieve the above object. That is, the invention according to claim 1 of the present invention is a PC formed by bundling a plurality of strands made of PC steel strands in parallel or semi-parallel, and further integrally coating a coating layer on the outside. A coated cable made of a PC steel material obtained by cutting a coated cable made of steel into a predetermined length and winding it into a coil shape, wherein a coating layer of a predetermined length at both ends is removed. Each strand over a certain length is dissociated from the end of this part, and the middle part of these strands is made of a material such as a flexible thin plate that can be bent and restored and used at the construction site. A spacer having a strand insertion hole in the same arrangement as the fixing hole of the fixing tool to be inserted is fitted and
Emergency covering materials such as tapes and sheets are used to prevent the movement of the spacers and the disengagement of the ends of the respective strands at locations including the spacers in the partial length or the entire length of the portion from which the coating layer has been removed. Is attached so that it can be easily removed at the construction site.

【0009】また、本発明に係る請求項2記載の発明は
ケーブル定着方法であって、PC鋼より線からなる複数
本のストランドをパラレル又はセミパラレルに束ね加工
し、さらにその外側に被覆層を一体に被覆させて形成さ
れるPC鋼材から成る被覆ケーブルを工場、倉庫等の搬
送元側において所定の長さに切断加工し、かつ、その両
端部における所定長さの部分の被覆層を取り除いて、こ
の部分の端末から一定長さに亘る各ストランドを解離し
て、それらストランドの中間部に可撓性薄板等の曲げ変
形及び復元が可能な材料からなり、かつ、工事現場で使
用される定着具の定着用孔と同一配列のストランド介挿
用孔を備えるスペーサを嵌挿して、被覆層が取り除かれ
ている前記部分の一部長または全長におけるスペーサを
含む個所に対して、このスペーサの移動及び各ストラン
ドの端末部の解離を防ぐためとして、テープ、シートな
どの応急用外被材を被着した後、巻取りドラムにコイル
状に巻取らせることによって、前記搬送元側でPC鋼材
から成る被覆ケーブルを製作し、このPC鋼材から成る
被覆ケーブルを工事現場に搬送し定着施工するに当たっ
て、応急用外被材を被着したままでケーブル端部をコン
クリート層の挿通孔に貫通した後、応急用外被材を取り
除き、解離されている各ストランドの端部を定着具の対
応する定着用孔に挿入するのに相前後して前記スペーサ
をカッター等の工具によって取り外し、かつ、各ストラ
ンドを定着具に定着させることを特徴とする。
According to a second aspect of the present invention, there is provided a cable fixing method, wherein a plurality of strands made of PC steel strands are bundled in parallel or semi-parallel, and a coating layer is further provided outside the strands. A coated cable made of a PC steel material formed by being integrally coated is cut to a predetermined length on the transportation side such as a factory or a warehouse, and a coating layer of a predetermined length at both ends is removed. The strands of a certain length are dissociated from the terminal of this part, and the middle part of the strands is made of a material such as a flexible thin plate that can be bent and deformed and restored, and is used at a construction site. A spacer having a strand insertion hole of the same arrangement as the fixing hole of the tool is inserted, and a portion including the spacer in a partial length or the entire length of the portion from which the coating layer is removed is provided. In order to prevent the movement of the spacers and the disengagement of the end portions of the respective strands, after applying an emergency covering material such as a tape or a sheet, the winding drum is wound up in a coil shape, whereby the transfer source side is formed. The coated cable made of PC steel is manufactured in the above, and when the coated cable made of PC steel is transported to the construction site and fixed, the end of the cable is inserted into the through hole of the concrete layer with the emergency covering material attached. After penetrating, the emergency covering material is removed, and the spacer is removed by a tool such as a cutter immediately before and after inserting the end of each dissociated strand into the corresponding fixing hole of the fixing device, and And fixing each strand to a fixing device.

【0010】このように本発明によれば、スペーサをを
嵌挿したことによって、工事現場においては工場側での
加工時に決められた定着時の各ストランドの配列に正し
く復元できる。また、現場での勘に基づく配列の決定が
一切不要であって、だれにでも簡単に定着作業が行え
て、現地作業が簡単になる。
As described above, according to the present invention, the arrangement of the strands at the time of fixing determined at the time of processing at the factory can be correctly restored at the construction site by inserting the spacer. In addition, there is no need to determine the arrangement based on intuition at the site, and anyone can easily perform the fixing operation, and the on-site work is simplified.

【0011】[0011]

【発明の実施の形態】以下、本発明の実施の形態の一例
を、図面に基づいて説明する。各図面において、図1は
本発明に係るPC鋼材から成る被覆ケーブル1の巻取り
ドラムに巻装された状態が示される斜視図であり、図2
乃至図4は図1図示のPC鋼材から成る被覆ケーブル1
の巻終わり端部の拡大図で、図2は被覆層が取り除かれ
た状態が示され、図3はさらにスペーサが嵌挿された状
態が示され、図4はさらに応急用外被材が被着された状
態が示され、図5(イ)、(ロ)は、図3及び図4に示
されるスペーサの各例の平面図であり、図6は本発明に
係るケーブル定着方法を説明するための定着部断面図で
ある。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In each drawing, FIG. 1 is a perspective view showing a state in which a coated cable 1 made of PC steel according to the present invention is wound around a winding drum, and FIG.
To FIG. 4 are coated cables 1 made of the PC steel shown in FIG.
2 is an enlarged view of the end portion of the winding, FIG. 2 shows a state in which the coating layer has been removed, FIG. 3 shows a state in which a spacer is further inserted, and FIG. 5 (a) and 5 (b) are plan views of each example of the spacer shown in FIGS. 3 and 4, and FIG. 6 illustrates a cable fixing method according to the present invention. FIG. 6 is a sectional view of a fixing unit for the present invention.

【0012】まず図1において、本発明に係るPC鋼材
から成る被覆ケーブル1は、PC鋼材から成る被覆ケー
ブルを所定の長さに切断加工して巻取りドラム2にコイ
ル状に巻取らせて形成される。PC鋼材から成る被覆ケ
ーブルは、図2を参照して亜鉛メッキ,樹脂コート,グ
リースと樹脂コート等の防錆処理が施された複数本のP
C鋼より線3が、パラレル又はセミパラレルに束ね加工
された後、さらにその外側に高密度ポリエチレン等の被
覆層4が一体に密着被覆された耐蝕性に優れた汎用され
る被覆ケーブルである。
First, referring to FIG. 1, a coated cable 1 made of a PC steel according to the present invention is formed by cutting a coated cable made of a PC steel into a predetermined length and winding the coiled coil around a winding drum 2. Is done. The coated cable made of PC steel is made of a plurality of P cables which have been subjected to a rustproof treatment such as zinc plating, resin coating, grease and resin coating with reference to FIG.
This is a general-purpose coated cable excellent in corrosion resistance in which a C steel strand 3 is bundled in parallel or semi-parallel, and further covered with a coating layer 4 of high-density polyethylene or the like on the outside thereof.

【0013】図2を参照して、上記のPC鋼材から成る
被覆ケーブル1は両側の端部の所定長さの部分1A にお
ける被覆層4が取り除かれるとともに、図3に示される
ように、このケーブル端部1A の端末から一定の長さに
亘る各ストランド3が解離されていて、この解離した部
分の中間部には、ストランド介挿用孔6を備えるスペー
サ5が嵌挿されている。さらに、ケーブル端部1A の一
部長又は全長のスペーサ5を含む個所に対して応急用外
被材7が被着されている。
Referring to FIG. 2, the coated cable 1 made of the above-mentioned PC steel has the coating layer 4 removed at the portions 1A of a predetermined length at both ends, and as shown in FIG. Each strand 3 extending over a certain length from the end of the end 1A is dissociated, and a spacer 5 having a strand insertion hole 6 is fitted into the middle of the dissociated portion. Further, an emergency covering material 7 is attached to a portion of the cable end 1A including the spacer 5 having a partial length or a full length.

【0014】スペーサ5は、図5に2例が示されるが、
図5(イ)図示のものは、軟質合成樹脂製、例えば厚さ
0.5mm〜1mm程度のビニールシートあるいはナイロン
シートまたは薄板を原材料として、適当数のストランド
介挿用孔6を備える孔あき円板に形成した可撓性の板状
スペーサであり、一方、図5(ロ)図示のものは、細い
鋼線、例えば直径約1mm程度の細針金線を適当数のスト
ランド介挿用孔6が連なって備えられる金網状に形成し
た網組スペーサである。これらのスペーサ5は、何れも
曲げ変形及び復元が可能な可撓性を有するとともに、前
記ストランド介挿用孔6が、ケーブルのストランド数と
同数でこのストランド3を挿通し得る径を持つ孔であっ
て、かつ、工事現場で使用される定着具の要素部材であ
る定着ブロック8に設けられた定着用孔10と同一配列
のパターンで穿孔されていることである。なお、スペー
サ5の大きさは、定着ブロック8の断面形状と同じであ
る必要はなく、相似形であれば良い。
Two examples of the spacer 5 are shown in FIG.
FIG. 5 (a) shows a perforated circle having a suitable number of strand insertion holes 6 made of a soft synthetic resin, for example, a vinyl sheet, a nylon sheet or a thin plate having a thickness of about 0.5 mm to 1 mm as a raw material. On the other hand, a flexible plate-like spacer formed on a plate is shown in FIG. 5 (b). On the other hand, a thin steel wire, for example, a fine wire having a diameter of about 1 mm is provided with an appropriate number of strand insertion holes 6. It is a mesh braided spacer formed in the form of a wire mesh. Each of these spacers 5 has a flexibility capable of bending deformation and restoration, and the strand insertion hole 6 is a hole having a diameter equal to the number of the strands of the cable and capable of inserting the strand 3. In addition, the holes are perforated in the same pattern as the fixing holes 10 provided in the fixing block 8 which is an element member of the fixing tool used at the construction site. The size of the spacer 5 does not need to be the same as the cross-sectional shape of the fixing block 8, but may be any similar shape.

【0015】また、スペーサ5は、現場で簡単に取り除
くことが可能なように、カッタ、ニッパ、ペンチ等の簡
単な構造の携帯用切断具によって容易に切断できる程度
の硬さのものが好ましく、以上述べるような特徴を備え
る構造のものであれば、上記両例に限ることはなく、各
種の変形になる形態のスペーサが本発明に適用されるこ
とは言うまでもない。
The spacer 5 is preferably of such a hardness that it can be easily cut by a portable cutting tool having a simple structure such as a cutter, nipper or pliers so that it can be easily removed on site. As long as the structure has the features described above, the present invention is not limited to the above two examples, and it goes without saying that various types of deformable spacers can be applied to the present invention.

【0016】応急用外被材7は、片面に粘着剤が塗布さ
れている塩化ビニルテープ、シート等の片面粘着樹脂テ
ープ、シートなどが用いられる。このような応急用外被
材7が、被覆層4を取り除いたケーブル端部1A の所定
の個所に巻付けるなどによって被着される。この応急用
外被材7は、搬送時や定着のための工事施工の間に、嵌
挿しているスペーサ5が移動したり、また各ストランド
3の端末部が必要以上に拡がって解離したりすることが
ないように、特にスペーサ5が嵌挿されている個所を覆
って被着される。この応急用外被材7は、勿論、現場で
の工事施工に際して容易に取り外すことができるよう
に、仮巻締めを行う応急的・一時的な被覆材として機能
する部材に他ならなく、図4に示されるようにスペーサ
5の周縁部をストランド3の外周面に沿わせるように曲
げ変形させて中太りの瘤状に余り膨出させないようにし
て巻締め被着することが望ましい。
As the emergency covering material 7, a single-sided adhesive resin tape such as a vinyl chloride tape or a sheet having one surface coated with an adhesive, a sheet or the like is used. Such an emergency covering material 7 is applied by winding it around a predetermined portion of the cable end 1A from which the coating layer 4 has been removed. In the emergency covering material 7, the inserted spacers 5 move, or the end portions of the respective strands 3 are unnecessarily expanded and dissociated during transportation or construction work for fixing. In order to prevent this, the spacer 5 is attached so as to cover the place where the spacer 5 is inserted. This emergency covering material 7 is, of course, a member that functions as an emergency / temporary covering material for temporary winding so that it can be easily removed at the time of construction work on site. It is desirable that the peripheral edge portion of the spacer 5 be bent and deformed so as to be along the outer peripheral surface of the strand 3 as shown in FIG.

【0017】このように形成してなるPC鋼材から成る
被覆ケーブル1は、ケーブル製造工場や、保管倉庫等の
搬送元側において、現場での使用状態に適合した長さ及
び端末部形態を有し、かつ、コイル状に巻取らせてなる
ケーブルに予め製作されるものである。
The coated cable 1 made of the PC steel material formed as described above has a length and a terminal form suitable for use at the site on the side of the transport source such as a cable manufacturing factory or a storage warehouse. And it is manufactured in advance in a cable wound in a coil shape.

【0018】このPC鋼材から成る被覆ケーブル1を用
いて行うケーブル定着方法を図6を参照しながら以下に
説明する。搬送元側から巻取りドラム2に巻付けられた
状態でトラック等により工事現場に運ばれてきたPC鋼
材から成る被覆ケーブル1を定着場所の近くに降ろし
て、まず、ケーブル端部1A を引き出して鉄筋コンクリ
ートの桁内に張架し、次いで、ケーブル端部1A を応急
用外被材7が被着されたままでコンクリート層12に設
けられた挿通孔13内に貫通した後、応急用外被材7を
取り除く。この取り除きによってスペーサ5は元の形状
に戻されて、ケーブル端部1A は図3に示されるのと同
じ形態に復元し、、したがって、各ストランド3の端部
をケーブル加工時と同じ配列に保持させることができ、
支圧板11に沿わせる定着ブロック8の対応する各定着
用孔10に、間違うことなく挿入させることができ、し
かもケーブル端部1A のどの個所にもクロスする部分が
存在しない状態に保って定着させることが可能である。
A cable fixing method using the coated cable 1 made of PC steel will be described below with reference to FIG. The coated cable 1 made of PC steel, which has been transported to the construction site by a truck or the like while being wound on the winding drum 2 from the transfer source side, is lowered near the fixing place, and first, the cable end 1A is pulled out. The cable end 1A is stretched in a reinforced concrete girder, and then the cable end 1A is passed through the insertion hole 13 provided in the concrete layer 12 with the emergency covering material 7 attached thereto. Get rid of. This removal returns the spacer 5 to its original shape and restores the cable ends 1A to the same configuration as shown in FIG. 3, thus maintaining the ends of each strand 3 in the same arrangement as when processing the cable. Can be
The fixing block 10 can be inserted into the corresponding fixing holes 10 of the fixing block 8 along the supporting plate 11 without mistake, and the fixing is performed while maintaining no crossing portion at any part of the cable end 1A. It is possible.

【0019】なお、各ストランド3の端部を各定着用孔
10に挿入してウエッジ9を仮固定した緊張前の弛緩状
態のときに、スペーサ5をカッタ等で取り除けばよく、
場合によってはそのまま残しておいても差し支えない。
その後、各ストランド3を緊張下においてウエッジ9で
締めつけることによって、ケーブルの定着・緊張が終了
する。
When the end of each strand 3 is inserted into each fixing hole 10 and the wedge 9 is temporarily fixed and in a relaxed state before tension, the spacer 5 may be removed with a cutter or the like.
In some cases, it can be left as it is.
Thereafter, each strand 3 is tightened with the wedge 9 under tension, thereby completing the fixing and tensioning of the cable.

【0020】[0020]

【発明の効果】本発明は、以上説明したような形態で実
施され、以下に記載されるような効果を奏する。スペー
サ5を嵌挿したことによって、作業現地において工場加
工の際に決定したストランドの配列に正確に復元するこ
とが可能となり、定着時の配列パターンを誤ることがな
くてストランド間のクロス現象の発生を未然に防いで、
緊張時のケーブルの補強性能を必要かつ十分に発揮でき
る。
The present invention is embodied in the form described above and has the following effects. The insertion of the spacers 5 makes it possible to accurately restore the arrangement of the strands determined at the time of factory processing at the work site, without causing an erroneous arrangement pattern at the time of fixing and generating a cross phenomenon between the strands. To prevent
The necessary and sufficient reinforcement performance of the cable during tension can be exerted.

【0021】また、本発明によれば、ケーブルの定着作
業が視覚による確認で簡単かつ確実に行えて、経験、勘
に基づく煩雑な作業を排除し得ることから、作業性が改
善されて簡易なものとなり、省力化及び合理化に寄与す
るところ大である。
Further, according to the present invention, the fixing work of the cable can be easily and reliably performed by visual confirmation, and a complicated work based on experience and intuition can be eliminated. It greatly contributes to labor saving and rationalization.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明に係るPC鋼材から成る被覆ケーブル1
の巻取りドラムに巻装された状態が示される斜視図であ
る。
FIG. 1 shows a coated cable 1 made of PC steel according to the present invention.
FIG. 5 is a perspective view showing a state in which it is wound around a take-up drum.

【図2】図1図示のPC鋼材から成る被覆ケーブル1の
巻終わり端部の被覆層が取り除かれた状態が示される拡
大図である。
FIG. 2 is an enlarged view showing a state in which a coating layer at an end of winding of a coated cable 1 made of a PC steel material shown in FIG. 1 is removed.

【図3】図1図示のPC鋼材から成る被覆ケーブル1の
巻終わり端部のさらにスペーサが嵌挿された状態が示さ
れる拡大図である。
FIG. 3 is an enlarged view showing a state in which a spacer is inserted at the end of the winding of the insulated cable 1 made of the PC steel material shown in FIG. 1;

【図4】図1図示のPC鋼材から成る被覆ケーブル1の
巻終わり端部のさらに応急用外被材が被着された状態が
示される拡大図である。
FIG. 4 is an enlarged view showing a state in which a first-aid outer jacket material is further attached to the end of winding of the coated cable 1 made of the PC steel material shown in FIG. 1;

【図5】図3及び図4に示されるスペーサの各例の平面
図である。
FIG. 5 is a plan view of each example of the spacer shown in FIGS. 3 and 4;

【図6】本発明に係るケーブル定着方法を説明するため
の定着部断面図である。
FIG. 6 is a sectional view of a fixing unit for explaining a cable fixing method according to the present invention.

【図7】ケーブルストランドと定着ブロックの定着用孔
との対応関係を示す断面図である。
FIG. 7 is a cross-sectional view illustrating a correspondence between a cable strand and a fixing hole of a fixing block.

【符号の説明】[Explanation of symbols]

1…PC鋼材から成る被覆ケーブル、 1A …ケーブル端部、 2…巻取りドラム、 3…ストランド、 4…被覆層、 5…スペーサ、 6…ストランド介挿用孔、 7…応急用外被材、 8…定着ブロック、 9…ウエッジ、 10…定着用孔、 11…支圧板、 12…コンクリート層、 13…挿通孔、 DESCRIPTION OF SYMBOLS 1 ... Insulated cable which consists of a PC steel material, 1A ... Cable end part, 2 ... Winding drum, 3 ... Strand, 4 ... Coating layer, 5 ... Spacer, 6 ... Strand insertion hole, 7 ... Emergency jacket material, 8: fixing block, 9: wedge, 10: fixing hole, 11: support plate, 12: concrete layer, 13: insertion hole,

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 PC鋼より線からなる複数本のストラン
ドをパラレル又はセミパラレルに束ね加工し、さらにそ
の外側に被覆層を一体に被覆させて形成されるPC鋼材
から成る被覆ケーブルを所定の長さに切断加工し、か
つ、コイル状に巻取らせてなるPC鋼材から成る被覆ケ
ーブルであって、その両端部における所定長さの部分の
被覆層が取り除かれ、この部分の端末から一定長さに亘
る各ストランドが解離されていて、それらストランドの
中間部には、可撓性薄板等の曲げ変形及び復元が可能な
材料からなり、かつ、工事現場で使用される定着具の定
着用孔と同一配列のストランド介挿用孔を備えるスペー
サが嵌挿されているとともに、被覆層が取り除かれてい
る前記部分の一部長または全長におけるスペーサを含む
個所に対して、このスペーサの移動及び各ストランドの
端末部の解離を防ぐためとして、テープ、シートなどの
応急用外被材が前記工事現場で容易に取り外し可能なよ
うに被着されていることを特徴とするPC鋼材から成る
被覆ケーブル。
An insulated cable made of a PC steel material formed by bundling a plurality of strands made of a PC steel strand in parallel or semi-parallel and further integrally coating a coating layer on the outside thereof. A coated cable made of a PC steel material cut and cut into a coil shape, wherein a coating layer of a predetermined length at both ends thereof is removed, and a fixed length from an end of this portion is obtained. Are separated from each other, and a middle portion of the strands is made of a material such as a flexible thin plate capable of bending deformation and restoring, and has a fixing hole of a fixing tool used at a construction site. The spacers having the same arrangement of the holes for inserting the strands are inserted, and the spacers are provided at the portions including the spacers in the partial length or the full length of the portion from which the coating layer is removed. A PC steel material in which an emergency covering material such as a tape or a sheet is attached so as to be easily removable at the construction site in order to prevent the movement of the pacer and the disengagement of the terminal portion of each strand. Insulated cable consisting of:
【請求項2】 PC鋼より線からなる複数本のストラン
ドをパラレル又はセミパラレルに束ね加工し、さらにそ
の外側に被覆層を一体に被覆させて形成されるPC鋼材
から成る被覆ケーブルを工場、倉庫等の搬送元側におい
て所定の長さに切断加工し、かつ、その両端部における
所定長さの部分の被覆層を取り除いて、この部分の端末
から一定長さに亘る各ストランドを解離して、それらス
トランドの中間部に可撓性薄板等の曲げ変形及び復元が
可能な材料からなり、かつ、工事現場で使用される定着
具の定着用孔と同一配列のストランド介挿用孔を備える
スペーサを嵌挿して、被覆層が取り除かれている前記部
分の一部長または全長におけるスペーサを含む個所に対
して、このスペーサの移動及び各ストランドの端末部の
解離を防ぐためとして、テープ、シートなどの応急用外
被材を被着した後、巻取りドラムにコイル状に巻取らせ
ることによって、前記搬送元側でPC鋼材から成る被覆
ケーブルを製作し、このPC鋼材から成る被覆ケーブル
を工事現場に搬送し定着施工するに当たって、応急用外
被材を被着したままでケーブル端部をコンクリート層の
挿通孔に貫通した後、応急用外被材を取り除き、解離さ
れている各ストランドの端部を定着具の対応する定着用
孔に挿入するのに相前後して前記スペーサをカッター等
の工具によって取り外し、かつ、各ストランドを定着具
に定着させることを特徴とするケーブル定着方法。
2. A coated cable made of a PC steel material formed by bundling a plurality of strands made of PC steel strands in parallel or semi-parallel, and further integrally coating a coating layer on the outside of the strand. Cut to a predetermined length on the transport source side, etc., and remove the coating layer of a predetermined length portion at both ends, dissociate each strand over a certain length from the terminal of this portion, A spacer made of a material such as a flexible thin plate capable of bending deformation and restoring and having a strand insertion hole in the same arrangement as a fixing hole of a fixing tool used at a construction site is provided at an intermediate portion of the strands. In order to prevent the movement of the spacer and the disassociation of the terminal portion of each strand, the portion including the spacer in the partial length or the entire length of the portion from which the coating layer has been removed by insertion. Then, after applying an emergency covering material such as a tape and a sheet, the coil is wound around a winding drum to form a coated cable made of PC steel at the source side, and from this PC steel material. In transporting the coated cable to the construction site and fixing it, after penetrating the end of the cable through the insertion hole of the concrete layer with the emergency covering material attached, the emergency covering material is removed and disassembled. A cable that removes the spacer with a tool such as a cutter immediately before and after inserting the end of each strand into a corresponding fixing hole of the fixing device, and fixes each strand to the fixing device. Fixing method.
JP26861496A 1996-10-09 1996-10-09 Coated cable made of PC steel and method for fixing the cable Expired - Fee Related JP3587632B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26861496A JP3587632B2 (en) 1996-10-09 1996-10-09 Coated cable made of PC steel and method for fixing the cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26861496A JP3587632B2 (en) 1996-10-09 1996-10-09 Coated cable made of PC steel and method for fixing the cable

Publications (2)

Publication Number Publication Date
JPH10115097A true JPH10115097A (en) 1998-05-06
JP3587632B2 JP3587632B2 (en) 2004-11-10

Family

ID=17460998

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26861496A Expired - Fee Related JP3587632B2 (en) 1996-10-09 1996-10-09 Coated cable made of PC steel and method for fixing the cable

Country Status (1)

Country Link
JP (1) JP3587632B2 (en)

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JP2009068333A (en) * 2008-12-15 2009-04-02 Sumitomo Denko Steel Wire Kk Handling method of prefabricated cable
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CN101949219A (en) * 2010-10-08 2011-01-19 天津滨海盈信投资有限公司 Steel strand bundle
CN102003072A (en) * 2010-10-08 2011-04-06 天津滨海盈信投资有限公司 Steel strand bundle-weaving and crossing construction method
CN104675121A (en) * 2013-11-29 2015-06-03 甘肃路桥建设集团有限公司 Discharging weaving rack of prestressed steel strand

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009068333A (en) * 2008-12-15 2009-04-02 Sumitomo Denko Steel Wire Kk Handling method of prefabricated cable
CN101949218A (en) * 2010-10-08 2011-01-19 天津滨海盈信投资有限公司 Stranded steel wire bundling method
CN101949219A (en) * 2010-10-08 2011-01-19 天津滨海盈信投资有限公司 Steel strand bundle
CN102003072A (en) * 2010-10-08 2011-04-06 天津滨海盈信投资有限公司 Steel strand bundle-weaving and crossing construction method
CN104675121A (en) * 2013-11-29 2015-06-03 甘肃路桥建设集团有限公司 Discharging weaving rack of prestressed steel strand
CN104675121B (en) * 2013-11-29 2016-09-07 甘肃路桥建设集团有限公司 Bundle stand is compiled in a kind of prestress wire blanking

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