JPH08189139A - End-section anchor device for rustproof covered pc rope strand - Google Patents
End-section anchor device for rustproof covered pc rope strandInfo
- Publication number
- JPH08189139A JPH08189139A JP33974294A JP33974294A JPH08189139A JP H08189139 A JPH08189139 A JP H08189139A JP 33974294 A JP33974294 A JP 33974294A JP 33974294 A JP33974294 A JP 33974294A JP H08189139 A JPH08189139 A JP H08189139A
- Authority
- JP
- Japan
- Prior art keywords
- strand
- coated
- fixing
- rust
- rustproof
- 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
Landscapes
- Reinforcement Elements For Buildings (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は主としてプレストレスト
コンクリート構造物の応力導入に使用する防錆被覆を施
したＰＣストランドの緊張後の端部を楔にて定着させる
ための防錆被覆ＰＣストランドの端部定着装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to an end of an anticorrosion-coated PC strand for fixing a tensioned end of an anticorrosion-coated PC strand used for introducing stress to a prestressed concrete structure with a wedge. Part fixing device.
【０００２】[0002]
【従来の技術】従来、プレストレストコンクリート構造
におけるＰＣ鋼材の端部定着法として楔定着が広く使用
されている。これは、図８に示すようにテーパ孔２を有
する定着体１を使用し、そのテーパ孔２内に挿入したＰ
Ｃストランド３の外周を握むようにテーパ円筒を半割状
にした定着楔４を挿入し、その楔４の内面に係止用刃５
を一体成形しておき、ＰＣストランド３を緊張した際の
戻り方向の力によって定着楔４をテーパ孔内に引き込ま
せ、その際の定着楔４の半径方向の把持力によってＰＣ
ストランドを定着させるものである。2. Description of the Related Art Conventionally, wedge fixing has been widely used as an end fixing method for PC steel materials in a prestressed concrete structure. This uses a fixing body 1 having a tapered hole 2 as shown in FIG.
A fixing wedge 4 in which a tapered cylinder is divided into half is inserted so as to grasp the outer periphery of the C strand 3, and the locking blade 5 is provided on the inner surface of the wedge 4.
Is integrally molded, and the fixing wedge 4 is pulled into the taper hole by the force in the returning direction when the PC strand 3 is tensioned, and the PC is generated by the radial gripping force of the fixing wedge 4 at that time.
It fixes the strands.
【０００３】また近年においては、ＰＣ鋼材の経時的な
腐食による耐力の低下が問題となり、その腐食を防止す
るものとして図９に示すように合成樹脂製の防錆材６に
より、防錆被覆した防錆被覆ＰＣストランド７が使用さ
れるに至っている。Further, in recent years, a decrease in proof stress due to corrosion of PC steel with time has become a problem, and as a means for preventing the corrosion, a rust preventive coating 6 made of synthetic resin is used as shown in FIG. The anticorrosion coated PC strand 7 has come to be used.
【０００４】[0004]
【発明が解決しようとする課題】上述した従来の楔定着
方法においては、ＰＣストランド緊張後の戻り力によっ
て定着楔をテーパ孔内に引き入れ、これによって把持力
を得るようにしているものであるが、前記戻り力によっ
て定着楔を引き込ませるには、定着楔とＰＣストランド
とが軸方向に滑動しないように予め一定以上の喰い込み
が必要である。In the above-mentioned conventional wedge fixing method, the fixing wedge is pulled into the tapered hole by the returning force after the PC strand is tensioned, and thereby the gripping force is obtained. In order for the fixing wedge to be pulled in by the return force, it is necessary to bite the fixing wedge and the PC strand more than a certain amount in advance so as not to slide in the axial direction.
【０００５】このため従来は、構造体端部の支圧板に定
着体を当接させて、その定着体の移動を阻止させた状態
で定着楔をテーパ孔内に圧入し、これによって楔内周面
の係止用刃をＰＣストランドに喰い込ませておき、ジャ
ッキによる引張力を緩めることにより、定着楔の更なる
引き込みがなされ、強固な定着を得ている。Therefore, conventionally, the fixing member is brought into contact with the bearing plate at the end of the structure, and the fixing wedge is press-fitted into the tapered hole while the movement of the fixing member is prevented. The fixing blade of the surface is made to bite into the PC strand, and the pulling force of the jack is loosened, whereby the fixing wedge is further drawn in, and a strong fixing is obtained.
【０００６】これは、前述した防錆被覆ＰＣストランド
を使用した場合であっても同様の方法によって定着され
ており、この場合、まず第一に防錆被覆層が厚かった
り、材質の強度が高い場合に、ＰＣストランドの緊張後
の戻し前の定着楔の初期喰い込ませに大きな力を要し、
手作業では容易に喰い込まず、特に、多数本のＰＣ鋼材
を同一の定着体に同時に定着させる場合、初期喰い込み
が不充分なため、滑りが生じてしまうものが発生すると
いう問題があった。This is fixed by the same method even when the above-mentioned rust preventive coated PC strand is used. In this case, first of all, the rust preventive coating layer is thick and the strength of the material is high. In this case, a large amount of force is required to cause the fixing wedge to initially bite before returning after tension of the PC strand,
There is a problem in that the bite does not easily bite by hand, and in particular, when a large number of PC steel materials are simultaneously fixed to the same fixing member, the initial bite is insufficient, and some slippage occurs. .
【０００７】またＰＣストランドは、図１０に示すよう
に外周に撚り形状が表われており、これを円形の内面の
定着楔４で挾持させる場合には、撚り合わされた単位線
材３ａの外周面の曲率半径γ1 に比べて定着楔４の曲率
半径γ2 が大きいため、両者間の接触面積が少なく、こ
のため、特に防錆被覆したＰＣストランド７を挾持させ
る場合に滑りが生じ易いという問題があった。As shown in FIG. 10, the PC strand has a twisted shape on the outer circumference. When the PC strand is held by a fixing wedge 4 having a circular inner surface, the twisted unit wire 3a has a twisted outer surface. Since the radius of curvature γ 2 of the fixing wedge 4 is larger than that of the radius of curvature γ 1 , the contact area between the two is small, and therefore there is a problem that slippage is likely to occur particularly when the PC strand 7 coated with rust is held. there were.
【０００８】本発明はこのような従来の問題にかんが
み、防錆被覆ＰＣストランドの楔定着が特別の労力を要
することなく、より確実になされる端部定着装置の提供
を目的としたものである。In view of such conventional problems, the present invention has an object to provide an end fixing device in which wedge fixing of a rust preventive coated PC strand can be performed more reliably without requiring special labor. .
【０００９】[0009]
【課題を解決するための手段】上述の如き従来の問題を
解決するための本発明の特徴は、ＰＣストランドの外周
面の撚り形状に沿って合成樹脂被覆を施した防錆被覆Ｐ
Ｃストランドの端部が挿通されるテーパ孔付きの定着体
と、前記テーパ孔内に、前記防錆被覆ＰＣストランドを
握む配置に挿入され、前記防錆被覆ＰＣストランドの緊
張後の戻り力による引き込みによって、該防錆被覆ＰＣ
ストランドを挾持する定着楔を備えてなる防錆被覆ＰＣ
ストランドの端部定着装置において、前記定着用楔の内
面に前記防錆被覆ＰＣストランドの外周面の撚り形状に
嵌り合う螺旋状の凹溝を設けたことにある（請求項
１）。A feature of the present invention for solving the above-mentioned conventional problems is that a rust preventive coating P having a synthetic resin coating along the twisted shape of the outer peripheral surface of a PC strand is used.
A fixing member with a tapered hole through which the end of the C strand is inserted, and a fixing force which is inserted into the tapered hole in a position to grip the rustproof coated PC strand, and which is caused by a return force after tension of the rustproof coated PC strand. By pulling in, the rustproof coated PC
Anti-corrosion coated PC with a fixing wedge that holds the strand
In the end portion fixing device of the strand, a spiral concave groove that fits into the twisted shape of the outer peripheral surface of the rustproof coated PC strand is provided on the inner surface of the fixing wedge (claim 1).
【００１０】尚、定着用楔の内周面には防錆被覆ＰＣス
トランドの防錆被覆層のみに喰い込む滑り止め凸起を多
数突設してもよい（請求項２）。尚、この滑り止め凸起
は、定着楔の内面に直接成形する他、定着用楔の外周面
に被着した合成樹脂被覆に一部を埋め込ませて多数の硬
質粒状材を保持させることにより構成してもよい（請求
項３）。また滑り止め用凸起の高さは防錆被覆ＰＣスト
ランドの防錆被覆層を貫通してＰＣストランド表面に喰
い込む高さとしてもよい（請求項４）。Incidentally, a large number of non-slip protrusions may be provided on the inner peripheral surface of the fixing wedge so as to bite only into the anticorrosion coating layer of the anticorrosion coated PC strand (claim 2). The non-slip protrusions are formed by directly molding on the inner surface of the fixing wedge, and by embedding a part of the synthetic resin coating adhered on the outer peripheral surface of the fixing wedge to hold a large number of hard granular materials. You may do (Claim 3). Further, the height of the non-slip protrusions may be the height that penetrates the anticorrosion coating layer of the anticorrosion-coated PC strand and digs into the surface of the PC strand (claim 4).
【００１１】[0011]
【作用】本発明の防錆被覆ＰＣストランドの端部定着装
置は、定着楔の内面の螺旋状の凹溝が防錆被覆ＰＣスト
ランドの外周面の撚り形状に嵌り合うため、両者間が広
い面積で接合され、しかも螺旋状の凹凸が互いに嵌り合
うこととなるため、あたかも雄雌のねじを螺嵌したのと
同様の状態となって軸方向の滑りがなくなる。そして、
この嵌り合い状態は定着楔がテーパ孔内に引き込まれて
防錆被覆ＰＣストランドの外周面に対する半径方向の挾
持力が強くなることにより、より強固なものとなる。In the end fixing device of the rust preventive coated PC strand of the present invention, the spiral groove on the inner surface of the fixing wedge fits into the twisted shape of the outer peripheral surface of the rust preventive coated PC strand, so that there is a large area between the two. Since the spiral concave and convex portions are fitted to each other, the state becomes as if the male and female screws were screwed, and the axial slippage is eliminated. And
This fitting state is further strengthened by the fixing wedge being drawn into the taper hole and the clamping force in the radial direction with respect to the outer peripheral surface of the rust-proof coated PC strand becoming stronger.
【００１２】尚、定着楔内周面に係止用凸起を設けるこ
とにより、防錆被覆ＰＣストランドと定着楔相互間の撚
り形状に沿った螺旋方向の滑りが完全に防止される。By providing the locking projections on the inner peripheral surface of the fixing wedge, the sliding in the spiral direction along the twisted shape between the anticorrosion-coated PC strand and the fixing wedge is completely prevented.
【００１３】[0013]
【実施例】次に本発明の実施例を図１〜図５について説
明する。EXAMPLE An example of the present invention will be described with reference to FIGS.
【００１４】図中１０はプレストレスを付与しようとす
るコンクリート構造体であり、１１は支圧板、１２はＰ
Ｃストランド挿通用のシースである。１３はプレストレ
スを付与するための防錆被覆ＰＣストランドであり、図
７に示す従来のものと同様に撚り合わせた単位線材１３
ａ，１３ａ……の全周囲を包み込むように合成樹脂製の
防錆材１４により被覆され、外周面は単位線材１３ａ，
１３ａ間の螺旋状の撚り形状に合わせて被覆層が被着さ
れている。In the figure, 10 is a concrete structure to be prestressed, 11 is a bearing plate, and 12 is P.
It is a sheath for inserting a C strand. Numeral 13 is a rustproof coated PC strand for giving a prestress, and is a unit wire rod 13 twisted in the same manner as the conventional one shown in FIG.
a, 13a ... Is covered with a synthetic resin rust preventive material 14 so as to wrap around the entire circumference, and the outer peripheral surface is a unit wire material 13a,
A coating layer is applied in conformity with the spiral twisted shape between 13a.
【００１５】防錆被覆ＰＣストランド１３の端部は支圧
板１１外にて定着体１５に貫通されている。定着体１５
にはストランド端部側が拡開したテーパ孔１５ａが形成
されており、このテーパ孔１５ａ内に防錆被覆ＰＣスト
ランド１３が挿入されている。テーパ孔１５ａ内にはテ
ーパ円筒体を半割状にした形状の定着楔１６，１６が挿
入されており、その内面によって防錆被覆ＰＣストラン
ド１３を握んでいる。そして、防錆被覆ＰＣストランド
１３の緊張後の戻り力によって定着楔１６，１６がテー
パ孔１５ａ内に引き込まれることによって防錆被覆ＰＣ
ストランド１３の外周面を挾持して定着させている。The end of the anticorrosion-coated PC strand 13 penetrates the fixing body 15 outside the pressure bearing plate 11. Fixing body 15
Is formed with a tapered hole 15a whose end portion side is widened, and the rust preventive coated PC strand 13 is inserted into the tapered hole 15a. Fixing wedges 16, 16 each having a tapered cylindrical body in a half-divided shape are inserted into the tapered hole 15a, and the inner surface of the fixing wedge 16 holds the anticorrosion-coated PC strand 13. Then, the fixing wedges 16 and 16 are drawn into the tapered hole 15a by the returning force of the anticorrosion-coated PC strand 13 after the tension, so that the anticorrosion-coated PC is
The outer peripheral surface of the strand 13 is clamped and fixed.
【００１６】定着楔１６，１６は内面が略半円筒形をし
ており、その内周面には、定着する防錆被覆ＰＣストラ
ンド１３の外周の撚り形状に嵌り合う螺旋形の凹溝１
７，１７が成形されており、防錆被覆ＰＣストランド１
３の撚り形状と嵌り合って広い面接触がなされていると
ともに凹凸の嵌り合いによって、あたかも雄雌ねじが螺
嵌された状態となり、軸方向の滑りが阻止されている。The fixing wedges 16 and 16 have an inner surface of a substantially semi-cylindrical shape, and the inner peripheral surface of the fixing wedges 16 and 16 has a spiral groove 1 that fits into the twisted shape of the outer periphery of the rust-proof coated PC strand 13 to be fixed.
7 and 17 are molded, rustproof coated PC strand 1
A wide surface contact is made by fitting with the twisted shape of No. 3 and the fitting of the concavities and convexities makes it as if the male and female screws are screwed in, and prevents the sliding in the axial direction.
【００１７】定着楔は図３（イ）（ロ）に示すように内
周面の各凹溝１７の内面が平滑な定着楔１６の他、図４
（イ）（ロ）示すように凹溝１７の螺旋方向に交差する
向きの凸条からなる滑り止め凸起１８，１８……を多数
一体成形した定着楔１６ａや、図５（イ）（ロ）に示す
ように多点配置に尖鋭な小凸起からなる滑り止め凸起１
９，１９……を多数突設した定着楔１６ｂが使用でき
る。As shown in FIGS. 3 (a) and 3 (b), the fixing wedge includes the fixing wedge 16 in which the inner surface of each groove 17 on the inner peripheral surface is smooth, and FIG.
(A) (b) As shown in FIG. 5 (a) (b), the fixing wedge 16a integrally formed with a number of non-slip protrusions 18, 18 ... ) As shown in (), non-slip protrusions 1 consisting of sharp small protrusions in a multi-point arrangement
A fixing wedge 16b having a large number of projections 9, 9 ... Can be used.
【００１８】これらの滑り止め凸起１８，１９を有する
定着楔１６ａ，１６ｂを使用した場合には、これらの凸
起が防錆被覆ＰＣストランド１３の表面に喰い込むこと
によって滑りが防止され、防錆被覆ＰＣストランド１３
に対して定着楔１６ａ，１６ｂが螺旋方向の滑りが阻止
される。When the fixing wedges 16a and 16b having the anti-slip protrusions 18 and 19 are used, the protrusions bite into the surface of the anticorrosion-coated PC strand 13 to prevent slippage and prevent Rust coated PC strand 13
On the other hand, the fixing wedges 16a and 16b are prevented from sliding in the spiral direction.
【００１９】この他、滑り止め凸起の形状は、図には示
してないが、メッシュ状、ローレット状等の各種のもの
が使用できる。In addition, although the shape of the non-slip protrusions is not shown in the figure, various shapes such as a mesh shape and a knurled shape can be used.
【００２０】またこれらの滑り止め凸起１８，１９は、
防錆被覆ＰＣストランド１３の防錆被覆層にのみ喰い込
む高さであってもよく、防錆被覆層を突き破って単位線
材１３ａの表面に喰い込む高さに成形したものであって
もよい。Further, these non-slip protrusions 18 and 19 are
The height may be such that the rust-preventive coating layer of the rust-preventing-coated PC strand 13 bites only, or the height may be such that it penetrates the rust-preventing coating layer and bites into the surface of the unit wire rod 13a.
【００２１】更に、上述した定着楔は、外周全面に防錆
被覆ＰＣストランド１３と同様の防錆被覆を施したもの
であってもよく、この場合にも前述した各滑り止め凸起
１８，１９を設けたもの及び該凸起のないもののいずれ
にも防錆被覆したものが使用できる他、図６（イ）
（ロ）に示すように、定着楔１６の防錆材２０に砂等の
硬質粒状材２１を付着させて滑り止め凸起としてもよ
い。Further, the fixing wedge described above may have the entire outer periphery coated with the same rustproof coating as the rustproof PC strand 13, and in this case as well, the above-mentioned anti-slip projections 18, 19 are also provided. In addition to the one provided with and the one having no protrusion, the one coated with anticorrosion can be used, and FIG.
As shown in (b), a hard granular material 21 such as sand may be attached to the rust preventive material 20 of the fixing wedge 16 to form a non-slip protrusion.
【００２２】この硬質粒状材２１の付着は、防錆材２０
の硬化前に砂を吹き付けることによって一部が埋め込ま
れた状態で付着させることができ、防錆被覆ＰＣストラ
ンド１３を定着した際には、図７に示すようにこの粒状
材２１が両防錆材１４及び２０にまたがって喰い込んだ
状態となって、相互間の滑り止めがなされる。The adhesion of the hard granular material 21 is caused by the rust preventive material 20.
It can be adhered in a partially embedded state by spraying sand before curing of the above, and when the anticorrosion-coated PC strand 13 is fixed, as shown in FIG. The materials 14 and 20 are bitten over and are prevented from slipping.
【００２３】[0023]
【発明の効果】上述したように本発明のストランドの端
部定着装置においては、定着楔の内周面にストランドの
螺旋状の撚り形状に合わせた凹溝を形成しているため、
この定着楔をもってストランドの外周を握ませることに
より、軸方向の滑りが強固に阻止されることとなり、従
来のように初期喰い込みのための作業を要することなく
滑りのない定着状態を得ることができる。As described above, in the strand end fixing device of the present invention, since the concave groove is formed on the inner peripheral surface of the fixing wedge in conformity with the spiral twisted shape of the strand,
By gripping the outer circumference of the strand with this fixing wedge, the slip in the axial direction is strongly prevented, and it is possible to obtain a fixed state without slipping without the work for initial biting as in the conventional case. it can.
【００２４】また、定着楔の内周面に滑り止め凸起を設
けることにより、螺旋方向の滑りが完全に阻止され、よ
り完全な定着状態が得られ、しかも、この凸起を防錆被
覆層にのみ喰い込ませるようにすることによりストラン
ドの防錆を損うことなく定着できる。Further, by providing a non-slip protrusion on the inner peripheral surface of the fixing wedge, slip in the spiral direction is completely prevented, and a more complete fixing state can be obtained. By making it only bite into, it can be fixed without impairing the rust prevention of the strand.
【００２５】更に、滑り止め凸起を定着楔の外周の防錆
材に保持するこにより、その形成が容易となる。Further, by holding the anti-slip protrusions on the rust preventive material on the outer periphery of the fixing wedge, the formation thereof becomes easy.
【００２６】また、滑り止め凸起を防錆被覆層を通じて
ストランドの単位線材にまで達する高さとすることによ
り、より大きな緊張力に対しても耐抗し得るものとな
る。Further, by setting the height of the non-slip protrusions to reach the unit wire rod of the strand through the rust preventive coating layer, it becomes possible to withstand a larger tension force.
【図１】本発明の定着装置の実施の一例の概略構成を示
す断面図である。FIG. 1 is a sectional view showing a schematic configuration of an example of an embodiment of a fixing device of the present invention.
【図２】図１中のＡ−Ａ線断面図である。FIG. 2 is a sectional view taken along line AA in FIG.
【図３】（イ）は本発明に用いる定着楔の一例の平面図
であり、（ロ）は同正面図である。FIG. 3A is a plan view of an example of a fixing wedge used in the present invention, and FIG. 3B is a front view of the same.
【図４】（イ）は本発明に用いる定着楔の他の例の平面
図であり、（ロ）は同正面図である。FIG. 4A is a plan view of another example of the fixing wedge used in the present invention, and FIG. 4B is a front view of the same.
【図５】（イ）は本発明に用いる定着楔の更に他の例の
平面図であり、（ロ）は同正面図である。5A is a plan view of still another example of the fixing wedge used in the present invention, and FIG. 5B is a front view of the same.
【図６】（イ）は本発明に用いる定着楔の更に他の例の
平面図であり、（ロ）は断面図である。FIG. 6A is a plan view of still another example of the fixing wedge used in the present invention, and FIG. 6B is a sectional view.
【図７】同上の使用状態の部分拡大断面図である。FIG. 7 is a partially enlarged cross-sectional view of the above-mentioned use state.
【図８】従来の定着装置を示す断面図である。FIG. 8 is a cross-sectional view showing a conventional fixing device.
【図９】従来の防錆被覆ＰＣストランドを示す断面図で
ある。FIG. 9 is a cross-sectional view showing a conventional anticorrosion-coated PC strand.
【図１０】同上のストランドの楔定着部分の拡大断面図
である。FIG. 10 is an enlarged cross-sectional view of a wedge fixing portion of the above strand.
１０ コンクリート構造体 １１ 支圧板 １２ シース １３ 防錆被覆ＰＣストランド １３ａ 単位線材 １４，２０ 防錆材 １５ 定着体 １５ａ テーパ孔 １６，１６ａ，１６ｂ 定着楔 １７ 凹溝 １８，１９ 滑り止め凸起 ２１ 硬質粒状材 10 Concrete Structure 11 Bearing Plate 12 Sheath 13 Anticorrosion-Coated PC Strand 13a Unit Wire Rod 14, 20 Anticorrosion Material 15 Fixing Body 15a Tapered Holes 16, 16a, 16b Fixing Wedge 17 Recessed Grooves 18, 19 Nonslip Protrusion 21 Hard Granule Material
───────────────────────────────────────────────────── フロントページの続き (72)発明者 六車 煕 京都市西京区川島梅園町１番地 有限会社 エス・シー・アール コーポレーション内 (72)発明者 田口 保男 東京都港区三田４−15−35 株式会社タイ ムスエンジニアリング内 (72)発明者 丹野 政志 東京都台東区台東一丁目３番５号 フドウ 建研株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Rokusha Hikawa 1 Umezono-cho, Kawashima, Nishikyo-ku, Kyoto Within the SRC Corporation (72) Inventor Yasuo Taguchi 4-15-35 Mita, Minato-ku, Tokyo Stocks In Time Engineering Co., Ltd. (72) Inventor Masashi Tanno 1-3-5 Taito, Taito-ku, Tokyo Fudou Kenken Co., Ltd.
Claims (4)
って合成樹脂被覆を施した防錆被覆ＰＣストランドの端
部が挿通されるテーパ孔付きの定着体と、前記テーパ孔
内に、前記防錆被覆ＰＣストランドを握む配置に挿入さ
れ、前記防錆被覆ＰＣストランドの緊張後の戻り力によ
る引き込みによって、該防錆被覆ＰＣストランドを挾持
する定着楔を備えてなる防錆被覆ＰＣストランドの端部
定着装置において、前記定着用楔の内面に前記防錆被覆
ＰＣストランドの外周面の撚り形状に嵌り合う螺旋状の
凹溝を設けたことを特徴としてなる防錆被覆ＰＣストラ
ンドの端部定着装置。1. A fixing body having a tapered hole through which an end of a rust-preventive coated PC strand coated with a synthetic resin along the twisted shape of the outer peripheral surface of the PC strand is inserted, and the protective member in the tapered hole. An end of a rust-coated PC strand, which is inserted into a gripping arrangement of the rust-coated PC strand and has a fixing wedge that holds the rust-coated PC strand by the pulling force of the return force after the tension of the rust-coated PC strand. End fixing device for a rust preventive coated PC strand, characterized in that a spiral recessed groove that fits into the twisted shape of the outer peripheral surface of the rust preventive coated PC strand is provided on the inner surface of the fixing wedge. .
ンドの防錆被覆層のみに喰い込む滑り止め凸起を多数突
設してなる請求項１に記載の防錆被覆ＰＣストランドの
端部定着装置。2. The anticorrosion-coated PC strand according to claim 1, wherein a large number of anti-slip protrusions are formed on the inner peripheral surface of the fixing wedge so as to bite only into the anticorrosion-coating layer of the anticorrosion-coated PC strand. Edge fixing device.
した合成樹脂被覆に一部を埋め込ませて多数の硬質粒状
材を保持させることにより構成してなる請求項２に記載
の防錆被覆ＰＣストランドの端部定着装置。3. A non-slip protrusion is formed by partially embedding a synthetic resin coating adhered to the outer peripheral surface of a fixing wedge to hold a large number of hard granular materials. Anti-corrosion coated PC strand end fixing device.
ンドの防錆被覆層を貫通してＰＣストランド表面に喰い
込む滑り止め凸起を多数突設してなる請求項１に記載の
防錆被覆ＰＣストランドの端部定着装置。4. The anti-slip projections, which penetrate the rust-preventive coating layer of the rust-preventing coated PC strand and bite into the surface of the PC strand, are provided on the inner peripheral surface of the fixing wedge in a protruding manner. Anti-corrosion coated PC strand end fixing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6339742A JP2767026B2 (en) | 1994-12-29 | 1994-12-29 | Rust-proof coated PC strand end fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6339742A JP2767026B2 (en) | 1994-12-29 | 1994-12-29 | Rust-proof coated PC strand end fixing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08189139A true JPH08189139A (en) | 1996-07-23 |
| JP2767026B2 JP2767026B2 (en) | 1998-06-18 |
Family
ID=18330382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6339742A Expired - Lifetime JP2767026B2 (en) | 1994-12-29 | 1994-12-29 | Rust-proof coated PC strand end fixing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2767026B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017125352A (en) * | 2016-01-14 | 2017-07-20 | 鹿島建設株式会社 | Fixing part structure of prestress strand and wedge body |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4876335A (en) * | 1972-01-11 | 1973-10-15 | ||
| JPS5645863A (en) * | 1979-06-18 | 1981-04-25 | Boc Ltd | Method and device for thermally treating clay and refractory product |
| JPS60167505A (en) * | 1985-01-14 | 1985-08-30 | Toshiba Corp | Temperature compensation type amplifier |
-
1994
- 1994-12-29 JP JP6339742A patent/JP2767026B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4876335A (en) * | 1972-01-11 | 1973-10-15 | ||
| JPS5645863A (en) * | 1979-06-18 | 1981-04-25 | Boc Ltd | Method and device for thermally treating clay and refractory product |
| JPS60167505A (en) * | 1985-01-14 | 1985-08-30 | Toshiba Corp | Temperature compensation type amplifier |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017125352A (en) * | 2016-01-14 | 2017-07-20 | 鹿島建設株式会社 | Fixing part structure of prestress strand and wedge body |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2767026B2 (en) | 1998-06-18 |
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