JP2001254479A - Pc steel stranded wire connection structure, connection piece, and connection method therefor - Google Patents
Pc steel stranded wire connection structure, connection piece, and connection method thereforInfo
- Publication number
- JP2001254479A JP2001254479A JP2000114423A JP2000114423A JP2001254479A JP 2001254479 A JP2001254479 A JP 2001254479A JP 2000114423 A JP2000114423 A JP 2000114423A JP 2000114423 A JP2000114423 A JP 2000114423A JP 2001254479 A JP2001254479 A JP 2001254479A
- Authority
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- Japan
- Prior art keywords
- wedge
- stranded wire
- cylindrical
- chuck
- cylindrical body
- 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.)
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Abstract
Description
【０００１】[0001]
【発明の技術分野】本発明はプレストレストコンクリー
ト工法におけるＰＣ鋼より線接続構造及び接続具並びに
その施工方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a PC steel stranded wire connection structure and a connection tool in a prestressed concrete method, and a method of applying the same.
【０００２】[0002]
【従来の技術】従来のＰＣ鋼撚り線接続具としては、両
端内壁にねじ部を螺設した円筒状カップラーに、左右一
対のチャックボディを左右から螺入して、そのテーパー
状嵌入部で分割されたウェッジを締付け、その内壁で左
右から挿入されたＰＣ鋼撚り線を締着しているものがあ
る。そして、円筒カップラーの内部には円筒スサが装入
され、その中間仕切板の両側には円錐状のスプリングが
対向的に装着され、各ウェッジを各テーパー状嵌入部に
押し込む方向に付勢している。かくして、ウェッジはス
プリングの反力を受け、チャックボディの螺入により締
付けられる。また、前記の円筒カップラーと中間仕切板
とを合わせて、軸線方向に底壁を挟んで対向する円形孔
を穿設し、該孔にスプリングを対向的に装着して円筒カ
ップラーを構成してなる従来のＰＣ鋼撚り線接続具もあ
る。2. Description of the Related Art As a conventional PC steel stranded wire connector, a pair of left and right chuck bodies are screwed from right and left into a cylindrical coupler having screw portions screwed into inner walls at both ends, and divided by a tapered fitting portion. In some cases, the wedge thus fastened is fastened, and a stranded PC steel wire inserted from the left and right is fastened on its inner wall. A cylindrical susa is inserted into the inside of the cylindrical coupler, and conical springs are mounted on opposite sides of the intermediate partition plate so as to urge each wedge in a direction of pushing each wedge into each tapered fitting portion. I have. Thus, the wedge receives the reaction force of the spring and is tightened by screwing the chuck body. Further, the cylindrical coupler and the intermediate partition plate are combined to form a circular hole opposed to the bottom wall in the axial direction with the bottom wall interposed therebetween, and a spring is attached to the hole so as to oppose the cylindrical coupler to constitute the cylindrical coupler. There are also conventional PC steel stranded wire connectors.
【０００３】しかして、プレストレストコンクリート工
法においては、ＰＣ鋼撚り線の間には軸線方向に緊張力
が加えられるので、分割されたウェッジはテーパー状嵌
入部に整合され、ＰＣ鋼撚り線は真直姿勢に保持されて
前記のウェッジに確実にグリップされることが必要とな
る。In the prestressed concrete method, however, tension is applied in the axial direction between the strands of the PC steel, so that the divided wedges are aligned with the tapered fitting portion, and the strands of the PC steel are straightened. And it must be securely gripped by the wedge.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、従来構
造のＰＣ鋼撚り線接続具では、開口部からＰＣ鋼撚り線
を挿込むとき、たいていは一方の側のＰＣ鋼撚り線が２
０ｍ以上の長さを有し、撚り線を真直に制御しつつ挿込
むのが難しく、また大きな力を要するのではずみにより
スプリングが不均等に伸縮したままとなり、ウェッジを
真直に付勢していない場合が起こり得ること、またウェ
ッジがＰＣ鋼撚り線を締着するにはＰＣ鋼撚り線が引張
られた初期にウェッジがＰＣ鋼撚り線を挟込み両者一体
となってテーパー部内に入り込んで、テーパー部のくさ
び作用による面圧がＰＣ鋼撚り線とウェッジ内壁との間
でスリップを生じない程度に十分でなければならない
が、この挟込み作用の確認は撚り線の引張強度の５〜１
５％程度の引張荷重が働くまで確認できないこと等の問
題点を有している。However, in the conventional stranded PC steel wire connecting device, when the stranded PC steel wire is inserted from the opening, the stranded PC steel wire on one side is usually two stranded wires.
It has a length of 0m or more, it is difficult to insert while controlling the stranded wire straight, and it requires a large force, so the spring remains unevenly expanded and contracted by the bounce, and the wedge is not urged straight In the case where the wedge tightens the PC steel stranded wire, the wedge sandwiches the PC steel stranded wire in the early stage when the PC steel stranded wire is pulled, and enters into the taper part integrally with the The surface pressure due to the wedge action of the part must be sufficient to prevent slippage between the PC steel stranded wire and the inner wall of the wedge.
There is a problem that it cannot be confirmed until a tensile load of about 5% is applied.
【０００５】前記不都合状態の発見と挟み込み作用の確
認のために、従来は接続施工後にＰＣ鋼撚り線に対して
中心軸線方向に矢印の予備緊張を加えることが義務づけ
られているが、特殊な油圧装置などを要し、時間と手間
がかかるために作業遅れや作業コストの上昇を招いてい
た。[0005] In order to discover the inconvenience state and to confirm the pinching action, it has been conventionally required to apply a pre-tension of an arrow in the direction of the center axis to the PC steel stranded wire after connection, but special hydraulic pressure is required. It requires equipment and the like, and it takes time and effort, resulting in delay of work and increase of work cost.
【０００６】[0006]
【課題を解決するための手段】本発明は前記課題の解決
を目的とするもので、下記構成のＰＣ鋼より線接続構造
及び接続具並びにその施工方法である。 （１）外周の中央に螺結用掴持部を具備し、その左右両
端内壁に雌ねじ部を螺設してなる円筒状カップラーと、
筒体前部の外周に前記各雌ねじ部と螺合する雄ねじ部を
有し、かつ筒体内部に後端へ向けて縮径するテーパー状
の嵌入部を内有してなる左右一対のチャックボディと、
前記各チャックボディの嵌入部に嵌入され、その内壁面
でＰＣ鋼撚り線をグリップしている分割されたウェッジ
とからなるＰＣ鋼撚り線接続構造において、前記各チャ
ックボディの右のウエッジ端面と左のウエッジ端面との
間に，高強度金属筒体がそれらウエッジの両端面に接触
して介設され、かつ高強度金属筒体は対向する左右のＰ
Ｃより線端部を内有し、そして各ＰＣより線端部の間に
若干の隙間を確保して介設されて成ることを特徴とする
ＰＣ鋼撚り線接続構造。 （２）外周の中央に螺結用掴持部を具備し、その左右両
端内壁に雌ねじ部を螺設してなる円筒状カップラーと、
筒体前部の外周に前記各雌ねじ部と螺合する雄ねじ部を
有し、かつ筒体内部に後端へ向けて縮径するテーパー状
の嵌入部を内有してなる左右一対のチャックボディと、
前記各チャックボディの嵌入部に嵌入され、その内壁面
でＰＣ鋼撚り線をグリップする分割されたウェッジと、
前記各チャックボディの右のウエッジ端面と左のウエッ
ジ端面との間にそれらウエッジの両端面に接触して介設
される高強度金属筒体とからなることを特徴とするＰＣ
より線接続具。 （３）外周の中央に螺結用掴持部を具備し、その左右両
端内壁に雌ねじ部を螺設してなる円筒状カップラーと、
筒体前部の外周に前記各雌ねじ部と螺合する雄ねじ部を
有し、かつ筒体内部に後端へ向けて縮径するテーパー状
の嵌入部を内有してなる左右一対のチャックボディと、
前記各チャックボディの嵌入部に嵌入され、その内壁面
でＰＣ鋼撚り線をグリップする分割されたウェッジと、
前記各チャックボディの右のウエッジ端面と左のウエッ
ジ端面との間にそれらウエッジの両端面に接触して介設
される，高強度金属筒体とからなるＰＣより線接続具を
用いてＰＣより線接続構造を完成させるＰＣ鋼撚り線接
続構造の施工方法において、まず前記各チャックボディ
の嵌入部にＰＣより線端部とウエッジとを強圧力で嵌入
させて固定化物となす第１工程と、次いで前記第１工程
で得られた左右いずれかの固定化物に，前記高強度金属
筒体をＰＣより線端部を内有するようにし、かつそのウ
エッジの端面に接触させて仮着する第２工程と、前記第
２工程で得られた一方の固定化物と前記第１工程で得ら
れた他方の固定化物とを前記円筒状カップラーを螺入方
向に回転させて、前記各チャックボディの右のウエッジ
端面と左のウエッジ端面との間に，高強度金属筒体がそ
れらウエッジの両端面に接触して圧縮状態で、かつ各Ｐ
Ｃより線端部の間には若干の隙間が確保されるごとくし
て介設されるごとくする第３工程とから成ることを特徴
とするＰＣ鋼撚り線接続構造の施工方法。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to provide a PC steel stranded wire connecting structure and a connecting tool having the following structure and a method of constructing the same. (1) a cylindrical coupler having a threaded gripping portion at the center of the outer periphery, and female screw portions screwed into inner walls on both left and right ends thereof;
A pair of left and right chuck bodies each having a male threaded portion screwed with each of the female threaded portions on the outer periphery of the front portion of the cylindrical body, and internally having a tapered fitting portion which is reduced in diameter toward the rear end inside the cylindrical body. When,
In a PC steel stranded wire connection structure comprising a divided wedge which is fitted into a fitting portion of each of the chuck bodies and grips the PC steel stranded wire on its inner wall surface, a right wedge end face and a left side of each of the chuck bodies are provided. The high-strength metal cylinders are interposed between the wedge end faces of the wedges in contact with both end faces of the wedges.
A PC steel stranded wire connection structure having a C-stranded wire end therein, and having a slight gap between each PC-stranded wire end. (2) a cylindrical coupler having a screw grip portion at the center of the outer periphery, and female screw portions screwed on inner walls on both right and left ends thereof;
A pair of left and right chuck bodies each having a male threaded portion screwed with each of the female threaded portions on the outer periphery of the front portion of the cylindrical body, and internally having a tapered fitting portion which is reduced in diameter toward the rear end inside the cylindrical body. When,
A split wedge that is fitted into the fitting portion of each of the chuck bodies and grips a PC steel stranded wire on an inner wall surface thereof;
A PC comprising a high-strength metal cylinder interposed between the right wedge end surface and the left wedge end surface of each of the chuck bodies in contact with both end surfaces of the wedges.
Strand fitting. (3) a cylindrical coupler having a threaded gripping portion at the center of the outer periphery, and female screw portions screwed into inner walls on both left and right ends thereof;
A pair of left and right chuck bodies each having a male threaded portion screwed with each of the female threaded portions on the outer periphery of the front portion of the cylindrical body, and internally having a tapered fitting portion which is reduced in diameter toward the rear end inside the cylindrical body. When,
A split wedge that is fitted into the fitting portion of each of the chuck bodies and grips a PC steel stranded wire on an inner wall surface thereof;
A high-strength metal tubular body is connected between the right wedge end face and the left wedge end face of each of the chuck bodies in contact with both end faces of the wedges. In the construction method of the PC steel stranded wire connection structure for completing the wire connection structure, a first step in which a wire end portion and a wedge are first fitted into the fitting portion of each of the chuck bodies with a high pressure from the PC to form a fixed object, Next, the second step of temporarily attaching the high-strength metal cylindrical body to the immobilized material obtained in the first step so that the high-strength metal cylindrical body has a wire end portion from a PC and brought into contact with the end surface of the wedge. And the one fixed object obtained in the second step and the other fixed object obtained in the first step are rotated in the screwing direction of the cylindrical coupler, and the right wedge of each of the chuck bodies is rotated. End face and left edge Between the end face, in compression strength metallic cylindrical member is in contact with both end faces thereof the wedge, and the P
C. A third step for connecting a stranded PC steel wire, the method comprising: a third step of ensuring that a slight gap is provided between the ends of the twisted C wires so as to be interposed.
【０００７】[0007]
【発明の実施に形態】次に本発明の実施の形態を図面に
基づいて説明する。図１は本発明実施例のＰＣ鋼撚り線
を接続したＰＣより線接続構造を示す正面断面図であ
り、図２は図１のＰＣより線接続構造の製作工程図であ
り、図３はチャックボディの嵌入部にＰＣより線端部と
ウエッジとを強圧力で嵌入させて固定化物となす工程の
説明図である。本発明のＰＣ鋼撚り線接続構造は、図１
に縦断面図を示すごとく、部材外周の中央に螺結用掴持
部１１を具備し、その左右両側に雌ねじ部１２，１２’
を螺設し、その中央部に無雌ねじ部１３を有する円筒状
カップラー１と、筒体前部の外周に前記各雌ねじ部１
２、１２’と螺合する雄ねじ部２１、２１’を有し、か
つ筒体内部に後端に向けて縮径するテーパー状の嵌入部
２２を内有してなる左右一対のチャックボディ２，２’
と、前記各チャックボディ２，２’の嵌入部２２、２
２’に嵌入され、その内壁面２３でＰＣ鋼撚り線４、
４’をグリップする分割されたウェッジ３、３’とを備
えて成り、前記各チャックボディ２の右のウエッジ端面
３１と左のウエッジ端面３１’との間には，高強度金属
筒体５がそれらの端部で前記ウエッジ３，３’の両端面
３１，３１’に接触して介設されている。そして、高強
度金属筒体５は対向する左右のＰＣより線端部５１，５
１’を内有し、そして各ＰＣより線端部５１，５１’の
間に若干の隙間ｓを確保して介設されている。Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a front sectional view showing a PC stranded wire connection structure to which a PC steel stranded wire according to an embodiment of the present invention is connected, FIG. 2 is a manufacturing process diagram of the PC stranded wire connection structure of FIG. 1, and FIG. It is explanatory drawing of the process which makes a wire end part and a wedge from PC into a fitting part of a body with strong pressure, and forms a fixed object. The PC steel stranded wire connection structure of the present invention is shown in FIG.
As shown in the vertical cross-sectional view of FIG. 1, a threaded grip portion 11 is provided at the center of the outer periphery of the member, and female screw portions 12, 12 'are provided on both left and right sides thereof.
And a cylindrical coupler 1 having a female screw portion 13 at the center thereof, and the female screw portions 1 on the outer periphery of the front portion of the cylindrical body.
A pair of left and right chuck bodies 2 having male thread portions 21 and 21 ′ screwed with 2 and 12 ′ and having a tapered fitting portion 22 having a diameter reduced toward the rear end inside the cylindrical body. 2 '
And the fitting portions 22, 2 of the chuck bodies 2, 2 '.
2 ′, and on its inner wall surface 23, a PC steel stranded wire 4,
A high-strength metal cylinder 5 is provided between the right wedge end face 31 and the left wedge end face 31 ′ of each chuck body 2. These ends are interposed in contact with both end surfaces 31, 31 'of the wedges 3, 3'. The high-strength metal cylinder 5 is connected to the left and right PCs by wire ends 51,5.
1 ', and each PC is provided with a slight gap s between the wire ends 51 and 51'.
【０００８】チャックボディ２は、その筒体外周の後端
にスパナー等で螺結し易いように、４角又は６角形状の
掴持部を具備してもよい。なお円形部にローレット加工
してパイプレンチで螺結してもよい。The chuck body 2 may be provided with a quadrangular or hexagonal gripping portion so as to be easily screwed to the rear end of the cylindrical body with a spanner or the like. The circular portion may be knurled and screwed with a pipe wrench.
【０００９】次に施工工程を説明する。まず、図３に示
す工具を用いて前記各チャックボディの嵌入部（２２）
にＰＣより線４端部とウエッジ３とを強圧力で嵌入させ
て固定化物となす。図３（ａ）では、シース７で被覆さ
れたＰＣより線４の端部（シース７が剥奪された部分が
チャックボディ２内のウエッジ３で把持されている）の
チャックボディ２の下端面を支持台９（Ｕ字状溝９’が
設けられている）で支持した後、ウエッジ３端面３１と
ＰＣより線端部５１を同時に押圧する内部形状の窪み８
１を有するプランジャー８で強力に押し入れ、固定化し
（ｂ）図の状態となす。Next, the construction process will be described. First, using the tool shown in FIG. 3, the fitting portion (22) of each chuck body is used.
The end of the wire 4 from the PC and the wedge 3 are fitted with a strong pressure to form an immobilized product. In FIG. 3A, the lower end surface of the chuck body 2 at the end of the PC stranded wire 4 covered with the sheath 7 (the part where the sheath 7 has been stripped is gripped by the wedge 3 in the chuck body 2) is shown in FIG. After being supported by the support base 9 (provided with a U-shaped groove 9 ′), a depression 8 having an internal shape that simultaneously presses the end face 31 of the wedge 3 and the wire end 51 from the PC.
The plunger 8 having 1 is forcibly pushed in and fixed, as shown in FIG.
【００１０】こうして得られた部に固定化物に，前記高
強度金属筒体５をＰＣより線端部を内有するようにし、
かつそのウエッジ３の端面に接触させて仮着する。この
際、ＰＣより線４端部と高強度金属筒体５との間にＯリ
ング６を介在させ、両者間に均等な間隙を設けて行うこ
とが好ましい。次いで、他方の固定化物を円筒状カップ
ラー１を螺入方向に回転させて、前記各チャックボディ
３の右のウエッジ端面３１と左のウエッジ端面３１’と
の間に，高強度金属筒体５がそれらウエッジの両端面３
１，３１’に接触して圧縮状態で、かつ各ＰＣより線端
部の間には若干の隙間ｓが確保されるごとくして介設す
る。[0010] The high-strength metal cylinder 5 has a wire end portion from the PC inside the immobilized material thus obtained,
At the same time, the wedge 3 is brought into contact with the end face and temporarily attached. At this time, it is preferable that an O-ring 6 be interposed between the end of the PC stranded wire 4 and the high-strength metal cylinder 5 so that a uniform gap is provided between the two. Next, the other fixed object is rotated in the screwing direction of the cylindrical coupler 1, and the high-strength metal cylinder 5 is inserted between the right wedge end face 31 and the left wedge end face 31 ′ of each chuck body 3. End faces 3 of those wedges
1, 31 'are compressed and in contact with each other, and a small gap s is provided between the end portions of the PCs.
【００１１】円筒状カップラー１は、その部材外周の中
央にスパナー等で螺結し易いように、４角又は６角形状
の掴持部１１を具備しても良い。なお、円形の掴持部を
ローレット加工してパイプレンチで螺結してもよい。The cylindrical coupler 1 may have a quadrangular or hexagonal gripping portion 11 at the center of the outer periphery of the member so as to be easily screwed with a spanner or the like. In addition, you may knurl a circular holding part and screw it with a pipe wrench.
【００１２】[0012]
【発明の効果】本発明は上記の構成及び作用を有するの
で、接続作業が簡易であり、また締着状態の確認が容易
である。また、作業遅れ、コスト上昇等の不都合が除去
される。Since the present invention has the above-described structure and operation, the connection work is simple and the state of the tightening can be easily confirmed. Further, inconveniences such as work delay and cost increase are eliminated.
【図１】本発明実施例のＰＣ鋼撚り線を接続したＰＣよ
り線接続構造を示す正面断面図。FIG. 1 is a front sectional view showing a PC strand connecting structure to which a PC steel stranded wire according to an embodiment of the present invention is connected.
【図２】図１のＰＣより線接続構造の製作工程図。FIG. 2 is a manufacturing process diagram of the PC strand connection structure of FIG. 1;
【図３】チャックボディの嵌入部にＰＣより線端部とウ
エッジとを強圧力で嵌入させて固定化物となす工程の説
明図。FIG. 3 is an explanatory view of a process in which a wire end portion and a wedge from a PC are fitted into a fitting portion of a chuck body with a high pressure to form a fixed object.
１：円筒状カップラー、，２，２’：一対のチャックボ
ディ、 ３，３’：ウェッジ、４，４’：ＰＣ鋼撚り線、 ５：高強度金属筒体、 ６：Ｏリング、 ７：シース ８：プランジャー ９：支持台 １１：螺結用掴持部、１２，１２’：雌ねじ部、 １３：無雌ねじ部、 ２１，２１’：雄ねじ部、 ２２：テーパー状の嵌入部、 ２３：内壁面、 ３１、３１’：ウエッジ端面 ５１，５１’：ＰＣより線端部、ｓ：若干の隙間1: Cylindrical coupler, 2, 2, 2 ': pair of chuck bodies, 3, 3': wedge, 4, 4 ': stranded PC steel, 5: high-strength metal cylinder, 6: O-ring, 7: sheath 8: Plunger 9: Support base 11: Grip portion for screw connection, 12, 12 ': Female screw portion, 13: Non- female screw portion, 21, 21': Male screw portion, 22: Tapered fitting portion, 23: Inside Wall surface 31, 31 ': wedge end surface 51, 51': PC stranded end, s: slight gap
───────────────────────────────────────────────────── フロントページの続き (72)発明者 西田 吉孝 兵庫県神戸市灘区高羽町４−４−12 Ｆターム(参考） 2E164 AA02 AA31 DA24 DA25 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Yoshitaka Nishida 4-4-12 Takaba-cho, Nada-ku, Kobe-shi, Hyogo F-term (reference) 2E164 AA02 AA31 DA24 DA25
Claims (3)
の左右両端内壁に雌ねじ部を螺設してなる円筒状カップ
ラーと、筒体前部の外周に前記各雌ねじ部と螺合する雄
ねじ部を有し、かつ筒体内部に後端へ向けて縮径するテ
ーパー状の嵌入部を内有してなる左右一対のチャックボ
ディと、前記各チャックボディの嵌入部に嵌入され、そ
の内壁面でＰＣ鋼撚り線をグリップしている分割された
ウェッジとからなるＰＣ鋼撚り線接続構造において、前
記各チャックボディの右のウエッジ端面と左のウエッジ
端面との間に，高強度金属筒体がそれらウエッジの両端
面に接触して介設され、かつ高強度金属筒体は対向する
左右のＰＣより線端部を内有し、そして各ＰＣより線端
部の間に若干の隙間を確保して介設されて成ることを特
徴とするＰＣ鋼撚り線接続構造。1. A cylindrical coupler having a threaded grip portion at the center of the outer periphery and female screw portions threaded on inner walls on both left and right sides thereof, and said female screw portion and a screw on an outer periphery of a front portion of the cylindrical body. A pair of left and right chuck bodies each having a male screw portion that fits together, and a tapered fitting portion having a diameter reduced toward the rear end inside the cylindrical body, and fitted into the fitting portions of the chuck bodies, In a PC steel stranded wire connection structure comprising divided wedges gripping a PC steel stranded wire on an inner wall surface thereof, a high-strength metal is provided between a right wedge end surface and a left wedge end surface of each of the chuck bodies. The cylinders are interposed in contact with both end faces of the wedges, and the high-strength metal cylinders have inner ends of the left and right PCs facing each other, and a slight gap between the ends of the respective PCs. Twisted PC steel characterized by being interposed with securing Wire connection structure.
の左右両端内壁に雌ねじ部を螺設してなる円筒状カップ
ラーと、筒体前部の外周に前記各雌ねじ部と螺合する雄
ねじ部を有し、かつ筒体内部に後端へ向けて縮径するテ
ーパー状の嵌入部を内有してなる左右一対のチャックボ
ディと、前記各チャックボディの嵌入部に嵌入され、そ
の内壁面でＰＣ鋼撚り線をグリップする分割されたウェ
ッジと、前記各チャックボディの右のウエッジ端面と左
のウエッジ端面との間にそれらウエッジの両端面に接触
して介設される高強度金属筒体とからなることを特徴と
するＰＣより線接続具。2. A cylindrical coupler having a threaded grip portion at the center of the outer periphery and female screw portions threaded on inner walls on both left and right sides thereof, and said female screw portion and a screw on an outer periphery of a front portion of the cylindrical body. A pair of left and right chuck bodies each having a male screw portion that fits together, and a tapered fitting portion having a diameter reduced toward the rear end inside the cylindrical body, and fitted into the fitting portions of the chuck bodies, A divided wedge that grips the PC steel stranded wire on its inner wall surface, and a high strength interposed between the right wedge end surface and the left wedge end surface of each chuck body in contact with both end surfaces of the wedges. A PC stranded wire connector comprising a metal tubular body.
の左右両端内壁に雌ねじ部を螺設してなる円筒状カップ
ラーと、筒体前部の外周に前記各雌ねじ部と螺合する雄
ねじ部を有し、かつ筒体内部に後端へ向けて縮径するテ
ーパー状の嵌入部を内有してなる左右一対のチャックボ
ディと、前記各チャックボディの嵌入部に嵌入され、そ
の内壁面でＰＣ鋼撚り線をグリップする分割されたウェ
ッジと、前記各チャックボディの右のウエッジ端面と左
のウエッジ端面との間にそれらウエッジの両端面に接触
して介設される，高強度金属筒体とからなるＰＣより線
接続具を用いてＰＣより線接続構造を完成させるＰＣ鋼
撚り線接続構造の施工方法において、まず前記各チャッ
クボディの嵌入部にＰＣより線端部とウエッジとを強圧
力で嵌入させて固定化物となす第１工程と、次いで前記
第１工程で得られた左右いずれかの固定化物に，前記高
強度金属筒体をＰＣより線端部を内有するようにし、か
つそのウエッジの端面に接触させて仮着する第２工程
と、前記第２工程で得られた一方の固定化物と前記第１
工程で得られた他方の固定化物とを前記円筒状カップラ
ーを螺入方向に回転させて、前記各チャックボディの右
のウエッジ端面と左のウエッジ端面との間に，高強度金
属筒体がそれらウエッジの両端面に接触して圧縮状態
で、かつ各ＰＣより線端部の間には若干の隙間が確保さ
れるごとくして介設されるごとくする第３工程とから成
ることを特徴とするＰＣ鋼撚り線接続構造の施工方法。3. A cylindrical coupler having a threaded grip portion at the center of the outer periphery, and female screw portions threaded on inner walls on both left and right sides thereof, and said female screw portion and a screw on an outer periphery of a front portion of the cylindrical body. A pair of left and right chuck bodies each having a male screw portion that fits together, and a tapered fitting portion having a diameter reduced toward the rear end inside the cylindrical body, and fitted into the fitting portions of the chuck bodies, A split wedge which grips a PC steel stranded wire on its inner wall surface and a right wedge end surface and a left wedge end surface of each of the chuck bodies are provided in contact with both end surfaces of the wedges. In the construction method of a PC steel stranded wire connection structure for completing a PC stranded wire connection structure using a PC stranded wire connection tool comprising a high-strength metal cylindrical body, first, a PC stranded wire end portion and a wedge are inserted into fitting portions of the chuck bodies. And fixed with strong pressure The high-strength metal cylindrical body has a wire end portion from the PC in the first step of forming a compound, and then contacts the right or left immobilized material obtained in the first step with the end surface of the wedge. A second step of temporarily attaching and fixing one of the immobilized products obtained in the second step and the first step.
By rotating the cylindrical coupler in the screwing direction with the other immobilized material obtained in the step, a high-strength metal cylinder is placed between the right wedge end surface and the left wedge end surface of each chuck body. A third step of contacting the both end surfaces of the wedge in a compressed state, and providing a slight gap between the end portions of each of the PCs so as to be interposed therebetween. Construction method of PC steel stranded wire connection structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000114423A JP3520833B2 (en) | 2000-03-12 | 2000-03-12 | Construction method of PC steel strand connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000114423A JP3520833B2 (en) | 2000-03-12 | 2000-03-12 | Construction method of PC steel strand connection structure |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2003207226A Division JP4582284B2 (en) | 2003-08-11 | 2003-08-11 | PC steel strand connection structure and connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001254479A true JP2001254479A (en) | 2001-09-21 |
| JP3520833B2 JP3520833B2 (en) | 2004-04-19 |
Family
ID=18626227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000114423A Expired - Fee Related JP3520833B2 (en) | 2000-03-12 | 2000-03-12 | Construction method of PC steel strand connection structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3520833B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100458951B1 (en) * | 2001-11-16 | 2004-12-03 | 주식회사 토암산업 | Precast Concrete Box Culvert Using Dual Directional Prestressed Tendon Anchoring Apparatus and Assembling Structure and Method in Precast Concrete Box Culvert |
| KR100732554B1 (en) * | 2006-09-06 | 2007-06-28 | (주) 이삼이엔지 | Tendon anchoring apparatus, connecting structure of culvert using the same and connecting method of culvert using the same |
| KR101025388B1 (en) | 2008-08-01 | 2011-03-28 | 장영미 | Connecting Apparatus and Connecting Method of Precast Concrete Box Units and Precast Concrete Box Unit comprising Double Connecting Apparatus |
-
2000
- 2000-03-12 JP JP2000114423A patent/JP3520833B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100458951B1 (en) * | 2001-11-16 | 2004-12-03 | 주식회사 토암산업 | Precast Concrete Box Culvert Using Dual Directional Prestressed Tendon Anchoring Apparatus and Assembling Structure and Method in Precast Concrete Box Culvert |
| KR100732554B1 (en) * | 2006-09-06 | 2007-06-28 | (주) 이삼이엔지 | Tendon anchoring apparatus, connecting structure of culvert using the same and connecting method of culvert using the same |
| KR101025388B1 (en) | 2008-08-01 | 2011-03-28 | 장영미 | Connecting Apparatus and Connecting Method of Precast Concrete Box Units and Precast Concrete Box Unit comprising Double Connecting Apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3520833B2 (en) | 2004-04-19 |
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