JPH089296Y2 - Female corn for fixing PC steel - Google Patents
Female corn for fixing PC steelInfo
- Publication number
- JPH089296Y2 JPH089296Y2 JP1988129611U JP12961188U JPH089296Y2 JP H089296 Y2 JPH089296 Y2 JP H089296Y2 JP 1988129611 U JP1988129611 U JP 1988129611U JP 12961188 U JP12961188 U JP 12961188U JP H089296 Y2 JPH089296 Y2 JP H089296Y2
- Authority
- JP
- Japan
- Prior art keywords
- fixing
- ring portion
- steel
- pocket former
- steel material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Description
【考案の詳細な説明】 （考案が属する技術分野） 本考案はPC鋼材の端部をコンクリート部材に定着する
ための雌コーンに関するものである。DETAILED DESCRIPTION OF THE INVENTION (Technical field to which the invention belongs) The present invention relates to a female cone for fixing an end portion of a PC steel material to a concrete member.
（考案の課題とその特徴点） ポストテンショニング方式でコンクリート部材にプレ
ストレスを導入する場合は、コンクリート部材の端部に
埋設した雌コーンに、緊張したPC鋼材の端部を楔で定着
させるが、この雌コーンには既に各種の提案がなされて
いる。(Problems of the invention and its characteristic points) When prestressing is introduced into the concrete member by the post-tensioning method, the end of the tensioned PC steel material is fixed with a wedge to the female cone embedded in the end of the concrete member. , Various proposals have already been made for this female corn.
本考案は、従来例には期待できない後述のような幾多
の利点があるPC鋼材定着用雌コーンを提供することを目
的としているものであって、その構成上の特徴は、実用
新案登録請求の範囲に記載したとおりである。The present invention is intended to provide a female corn for fixing a PC steel material, which has many advantages as will be described later, which cannot be expected in a conventional example, and the structural features thereof are the utility model registration request. As described in the range.
（図面による実施例の説明） 本考案の一実施例を示す第１図，第２図において、雌
コーン１の躯体２は断面の輪郭が円形で、後方に向かっ
て２段に縮径されており、その中心部にはPC鋼材挿通孔
３が設けられ、このPC鋼材挿通孔３の前方部は円錐孔４
になっている。(Explanation of an embodiment with reference to the drawings) Referring to FIGS. 1 and 2 showing an embodiment of the present invention, a body 2 of a female cone 1 has a circular cross-sectional contour and is reduced in diameter in two steps toward the rear. And a PC steel material insertion hole 3 is provided in the center thereof, and a front portion of the PC steel material insertion hole 3 is a conical hole 4
It has become.
躯体２の外側には、前端近くに主支圧板５が、また、
その後方の径が変わる段部の所に副支圧板6,6′が、そ
れぞれ突設されている。On the outside of the body 2, a main bearing plate 5 is provided near the front end,
Sub pressure bearing plates 6 and 6 ′ are respectively projectingly provided at the stepped portions whose diameters change in the rear.
躯体２の前端には雄ねじ７付きのリング部８が設けら
れ、雌コーン１をコンクリート部材の端部に埋設する際
にこのリング部８に後述のポケットフォーマーを取り付
けるようになっている。A ring portion 8 with a male screw 7 is provided at the front end of the skeleton 2, and when the female cone 1 is embedded in the end portion of the concrete member, a pocket former described later is attached to this ring portion 8.
雄ねじ７は連続ねじと分割ねじ（切見ねじ）の何れで
もよいが、分割ねじにすると、小さい回転角度（３分割
の場合は60度）で後述のポケットフォーマーの着脱を行
うことができる。The male screw 7 may be either a continuous screw or a split screw (cutting screw), but if it is a split screw, the pocket former described later can be attached and detached with a small rotation angle (60 degrees in the case of three divisions).
９はリング部８の内側に設けた凹溝、10は主支圧板５
に設けた溝孔、11は躯体２の後端部の内側に設けた段部
である。Reference numeral 9 is a concave groove provided inside the ring portion 8, and 10 is a main bearing plate 5.
The slot 11 provided at the inner side of the frame 2 is a stepped portion provided inside the rear end of the body 2.
前述の雌コーン１をコンクリート部材の端部に埋設す
るときの状態を示す第３図において、12はポケットフォ
ーマー、13はねじ棒、14はナット、15は型枠、16はアン
ボンドPC鋼材、17はシース、18はエンドキヤップであ
り、雌コーン１のリング部８の雄ねじ７にはポケットフ
ォーマー12の先端部が螺合され、ポケットフォーマー12
の先端は主支圧板５に圧接され、段部10にはシース17の
先端が当接し、躯体２の後端部にはエンドキヤップ18の
前半部が嵌められている。In FIG. 3 showing a state in which the female cone 1 is embedded in the end portion of the concrete member, 12 is a pocket former, 13 is a screw rod, 14 is a nut, 15 is a form, 16 is an unbonded PC steel material, Reference numeral 17 is a sheath, and 18 is an end cap. The front end of the pocket former 12 is screwed into the male screw 7 of the ring portion 8 of the female cone 1, so that the pocket former 12
The front end of the core is pressed against the main bearing plate 5, the front end of the sheath 17 contacts the step portion 10, and the front half of the end cap 18 is fitted to the rear end of the body 2.
図示のように、ねじ棒13の先端を雌コーン１の凹溝９
に係合させ、（なお、ねじ棒13の先端に側方に突出して
係合子が設けられ、この係合子がリング部８の先端から
凹溝９に通じる溝を通って凹溝９に導かれ、凹溝９に沿
って動かされて、凹溝９に係合するようになっている）
ナット14で締め付けて、雌コーン１を型枠15に固定した
状態で、コンクリート部材のコンクリートを打設し、そ
の硬化後、型枠15を外してアンボンドPC鋼材16を緊張
し、雌コーン１の円錐孔４に楔を打ち込んでアンボンド
PC鋼材16を雌コーン１に定着させるのであるが、ポケッ
トフォーマー12はコンクリート打設時に躯体２の内部に
前方からコンクリートが入るのを防止し、かつ、アンボ
ンドPC鋼材16の緊張・定着時作業空間を形成するための
部材であり、また、エンドキヤップ18はコンクリート打
設時に躯体２の内部に後方からコンクリートが入るのを
防止するために取り付けられるものである。As shown in the figure, the tip of the screw rod 13 is attached to the groove 9 of the female cone 1.
(Note that an engaging member is provided at the tip of the screw rod 13 so as to project laterally, and the engaging member is guided to the concave groove 9 through a groove communicating from the distal end of the ring portion 8 to the concave groove 9. , Is moved along the groove 9 to be engaged with the groove 9)
While tightening with the nut 14, the female cone 1 is fixed to the formwork 15, concrete of the concrete member is placed, and after hardening, the formwork 15 is removed and the unbonded PC steel material 16 is tensioned to remove the female cone 1. Unbond the wedge into the conical hole 4
The PC steel material 16 is fixed to the female cone 1, but the pocket former 12 prevents concrete from entering the inside of the skeleton 2 from the front at the time of placing concrete, and the work at the time of tension and fixation of the unbonded PC steel material 16 The end cap 18 is a member for forming a space, and is attached to prevent the concrete from entering the inside of the skeleton 2 from the rear when the concrete is poured.
（考案の効果） 本考案の雌コーンは、以上のようなものであって、主
支圧板の外に複数の副支圧板を備えているので、コンク
リート部材に伝達される力の分散性が良好で、低強度の
コンクリートの場合にも使用が可能であり、各支圧板の
受け持つ力が小さく、各支圧板を１個の場合より小さく
することができるのみならず、肉厚を薄くしたり、補強
リブを省略したりすることができるため、各支圧板の裏
側へのコンクリートの回り込みが良好で、施工性の向上
が期待でき、躯体の前端にポケットフォーマー取付け用
として雄ねじ付きのリング部を設けたので、ポケットフ
ォーマーを簡単に、しかも、安定した状態で取り付ける
ことができるのみならず、ポケットフォーマーの先端を
主支圧板に圧接させて螺合部にセメントミルクが確実に
入らないようにすることができるため、ポケットフォー
マーの取り外しが容易であり、リング部の内周面に固定
用のねじ棒の先端が係合する凹溝を形成したので、ポケ
ットフォーマー付きの躯体をねじ棒で所定位置に強固に
固定することができる、等の諸効果を奏する。(Effect of the Invention) The female cone of the present invention is as described above, and has a plurality of sub-pressure supporting plates in addition to the main pressure supporting plate, so that the dispersibility of the force transmitted to the concrete member is good. Therefore, it can be used even in the case of low-strength concrete, the bearing force of each bearing plate is small, and not only can each bearing plate be made smaller than one, but also the wall thickness can be reduced, Since it is possible to omit the reinforcing ribs, concrete can wrap around the back side of each bearing plate, which can be expected to improve workability, and a ring portion with a male screw is attached to the front end of the body for attaching the pocket former. Since it is provided, not only can the pocket former be installed easily and in a stable state, but the tip of the pocket former is pressed against the main pressure plate to ensure that cement milk enters the screwing part. Since the pocket former can be easily removed and the inner peripheral surface of the ring portion is formed with a recessed groove that engages with the tip of the fixing screw rod, the body with the pocket former is formed. It has various effects such as being able to firmly fix the screw to a predetermined position with a screw rod.
第１図は本考案の一実施例の半断面図、第２図は同じく
正面図、第３図は同じく使用態様を示す断面図である。 1:雌コーン、2:躯体、3:PC鋼材挿通孔、4:円錐孔、5:主
支圧板、6,6′：副支圧板、7:雄ねじ、8:リング部、11:
段部、12:ポケットフォーマー、16:アンボンドPC鋼材、
17:シース、18:エンドキヤップ。FIG. 1 is a half sectional view of an embodiment of the present invention, FIG. 2 is a front view of the same, and FIG. 1: Female cone, 2: Body, 3: PC steel insertion hole, 4: Conical hole, 5: Main bearing plate, 6, 6 ': Sub bearing plate, 7: Male screw, 8: Ring part, 11:
Step, 12: Pocket former, 16: Unbonded PC steel,
17: sheath, 18: end cap.
───────────────────────────────────────────────────── フロントページの続き (72)考案者 白石 環 千葉県千葉市新浜町１番地 川鉄鋼線工業 株式会社内 (56)参考文献 特開 昭61−169560（ＪＰ，Ａ) 特開 昭61−38041（ＪＰ，Ａ) 特公 昭54−21660（ＪＰ，Ｂ１) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Tamaki Shiraishi, No. 1 Niihama-cho, Chiba City, Chiba Prefecture, Kawakawa Steel Wire Industry Co., Ltd. (56) Reference JP 61-169560 (JP, A) JP 61- 38041 (JP, A) Japanese Patent Sho 54-21660 (JP, B1)
Claims (1)
体の外側に、躯体の長さ方向に適宜間隔で主支圧板と複
数の副支圧板を突設するとともに、躯体の前端にはポケ
ットフォーマー取付け用の雄ねじ付きのリング部を設
け、該リング部の内周面に躯体固定用のねじ棒の先端が
係合する凹溝を形成したことを特徴とするPC鋼材定着用
雌コーン。1. A main bearing plate and a plurality of sub bearing plates are projected on the outer side of a cylindrical body having a PC steel material insertion hole at the center at appropriate intervals in the length direction of the body, and at the front end of the body. Is provided with a ring portion with a male screw for attaching a pocket former, and a groove for engaging a tip of a screw rod for fixing a body is formed on an inner peripheral surface of the ring portion. corn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988129611U JPH089296Y2 (en) | 1988-10-04 | 1988-10-04 | Female corn for fixing PC steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988129611U JPH089296Y2 (en) | 1988-10-04 | 1988-10-04 | Female corn for fixing PC steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0251621U JPH0251621U (en) | 1990-04-12 |
| JPH089296Y2 true JPH089296Y2 (en) | 1996-03-21 |
Family
ID=31384048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988129611U Expired - Lifetime JPH089296Y2 (en) | 1988-10-04 | 1988-10-04 | Female corn for fixing PC steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH089296Y2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4675363B2 (en) * | 2007-10-02 | 2011-04-20 | 株式会社ジェーエスディー | PC steel bar fixing method in after-bond method, and instrument used for carrying out the method |
| JP4675364B2 (en) * | 2007-10-18 | 2011-04-20 | 株式会社ジェーエスディー | PC steel bar fixing method in unbonding method and instrument used for carrying out the method |
| JP4675365B2 (en) * | 2007-10-29 | 2011-04-20 | 株式会社ジェーエスディー | PC steel strand fixing method in unbond method, and instrument used for carrying out the method |
| JP4675367B2 (en) * | 2007-11-13 | 2011-04-20 | 株式会社ジェーエスディー | Method of fixing a plurality of PC steel strands in unbonding method, and instrument used for carrying out the method |
| JP4675369B2 (en) * | 2007-11-22 | 2011-04-20 | 株式会社ジェーエスディー | Fixing method for multiple PC steel strands in after-bond method and equipment used |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5421660A (en) * | 1977-07-20 | 1979-02-19 | Hitachi Ltd | Refrigerator |
| JPS6138041A (en) * | 1984-07-25 | 1986-02-24 | フレシネ アンテルナシヨナル（エステ−ウ−ペ−） | Apparatus for anchoring prestressed reinforcing member covered with grease |
| CH665444A5 (en) * | 1985-01-17 | 1988-05-13 | Losinger Ag | INTERMEDIATE ANCHOR ARRANGEMENT FOR PRELOADING COMPONENTS PRODUCED IN SEVERAL STAGES, AND A METHOD FOR PRODUCING SUCH AN INTERMEDIATE ANCHOR ARRANGEMENT. |
-
1988
- 1988-10-04 JP JP1988129611U patent/JPH089296Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0251621U (en) | 1990-04-12 |
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