JP2771774B2 - Fixing device - Google Patents
Fixing deviceInfo
- Publication number
- JP2771774B2 JP2771774B2 JP15611094A JP15611094A JP2771774B2 JP 2771774 B2 JP2771774 B2 JP 2771774B2 JP 15611094 A JP15611094 A JP 15611094A JP 15611094 A JP15611094 A JP 15611094A JP 2771774 B2 JP2771774 B2 JP 2771774B2
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- JP
- Japan
- Prior art keywords
- fixing
- wedge
- fixing device
- degrees
- length
- 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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Description
【０００１】[0001]
【産業上の利用分野】本発明は、プレストレストコンク
リート構造物・斜張橋用斜材・アンカー等に用いる緊張
材（ＰＣ鋼材）の定着装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing device for tension members (PC steel) used for prestressed concrete structures, diagonal members for cable stayed bridges, anchors, and the like.
【０００２】[0002]
【従来の技術】従来、緊張材を緊張して定着する定着装
置では円錐テーパ孔を有した定着体と、その円錐テーパ
孔に嵌入し緊張材を定着する楔体とで構成された定着装
置を使用している。しかし、緊張材を定着するために一
番重要な定着性能を十分発揮するものがない。また、最
近は疲労強度の高い定着装置の要求が増加している。2. Description of the Related Art Conventionally, a fixing device for fixing a tension member by tensioning the tension member includes a fixing member having a conical tapered hole and a wedge member which is fitted into the conical tapered hole and fixes the tension member. I'm using However, there is no one that sufficiently exhibits the most important fixing performance for fixing the tendon material. Further, recently, a demand for a fixing device having high fatigue strength has been increasing.
【０００３】プレストレストコンクリート構造物・斜張
橋用斜材・アンカー用等の緊張材（ＰＣ鋼材）の定着装
置における定着性能は、すべり、定着効率、疲労強度、
大きさ、低コスト等によって評価される。これらについ
て説明すると、 （ａ）すべりがあると、緊張力が減少するという問題が
ある。 （ｂ）定着効率は緊張材そのものの強度と定着部での緊
張材強度の比を言う。定着効率が高い方が優れた定着装
置である。 （ｃ）疲労強度は繰り返し荷重に対する強度で、最近は
定着部で高い疲労強度のものが要求されている。 （ｄ）大きさについては、定着部の構造を大きくすれ
ば、すべりを防止することが容易となり、定着効率や疲
労強度が向上するが、全体が大きくなり、構造体と適合
しなくなったり、作業性が悪化する等の問題がある。 （ｅ）構造が簡単で低コストであり、定着部費用を安く
することが好ましい。[0003] The fixing performance of a tensioning material (PC steel material) for a prestressed concrete structure, a diagonal material for a cable-stayed bridge, an anchor, and the like in a fixing device includes slip, fixing efficiency, fatigue strength, and the like.
It is evaluated by size, low cost, etc. The following describes these: (a) There is a problem that, when there is a slip, the tension decreases. (B) Fixing efficiency refers to the ratio of the strength of the tendon itself to the strength of the tendon at the fixing section. The higher the fixing efficiency, the better the fixing device. (C) Fatigue strength is a strength against repeated loads, and recently, a material having a high fatigue strength in a fixing portion is required. (D) Regarding the size, if the structure of the fixing section is increased, slipping can be easily prevented and the fixing efficiency and the fatigue strength can be improved. There is a problem that the property is deteriorated. (E) It is preferable that the structure be simple and low-cost, and that the cost of the fixing unit be reduced.
【０００４】近年これらに対応するために、次のよう
に、楔体のテーパ角の規定・内面凹凸の粗度の規定等の
提案がなされているが、上記定着性能をすべて満足する
ものではない。実公平３−５２８０５号公報には楔止面
を約１／１０のテーパを有する緩傾斜面に形成すると共
にＰＣより線掴持面にＰＣ鋼線に接触する先端部が欠截
された鋭角二等辺三角形状歯形を０．５ｍｍ前後の小ピ
ッチに配設した定着具が開示されている。In order to cope with these problems, proposals have been made in recent years for defining the taper angle of the wedge body and defining the roughness of the inner surface irregularities, but do not satisfy all of the above-mentioned fixing performance. . Japanese Utility Model Publication No. 3-52805 discloses an acute angle two-sided wedge stop surface which is formed as a gentle slope having a taper of about 1/10, and a tip for contacting a PC steel wire is cut off from a PC wire gripping surface. A fixing device in which equilateral triangular teeth are arranged at a small pitch of about 0.5 mm is disclosed.
【０００５】特開昭６３−４３０４６号公報には、内面
がざらざらした特に横紋のある円筒状のグリップでテー
パ角度１０度以下で、テーパ部分の先端の円環体の円環
厚さが先端半径の１／１０以下である定着装置が開示さ
れている。実開平１−９８８１７号公報には、繊維補強
材からなる緊張材用定着構造において、楔の傾斜角度と
定着体の傾斜角度との差が０．２〜２．０度で楔の内面
に１００〜５００μｍの範囲の表面粗度が設けられてい
る定着構造が開示されている。これは繊維補強材から成
る定着装置であって、通常の鋼製の定着装置に関するも
のではない。Japanese Patent Application Laid-Open No. 63-43046 discloses a cylindrical grip having a rough inner surface, particularly with a horizontal pattern, with a taper angle of 10 degrees or less, and an annular thickness at the tip of the tapered portion. A fixing device having a radius of 1/10 or less is disclosed. Japanese Utility Model Laid-Open No. 1-98817 discloses that in a fixing structure for a tension member made of a fiber reinforcing material, the difference between the inclination angle of the wedge and the inclination angle of the fixing member is 0.2 to 2.0 degrees and 100 A fixing structure having a surface roughness in the range of 500 μm is disclosed. This is a fixing device made of a fiber reinforcing material and is not related to a normal steel fixing device.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、プレストレ
ストコンクリート構造物・斜張橋用斜材・アンカー用等
の緊張材（ＰＣ鋼材）の定着装置における定着性能（す
べり・定着効率・疲労強度・コンパクト・低コスト）に
優れたものを、定着体のテーパ角（θ1 ）、定着体の長
さ（Ｌ1 ）、楔体のテーパ角（θ2 ）、楔体の長さ（Ｌ
2 ）の関係から規定した定着装置を開発した。DISCLOSURE OF THE INVENTION The present invention relates to a fixing device (sliding, fixing efficiency, fatigue strength, etc.) for a fixing device for a tension member (PC steel material) for prestressed concrete structures, diagonal members for cable-stayed bridges, anchors and the like. Those excellent in compactness and low cost) include the fixing member taper angle (θ 1 ), fixing member length (L 1 ), wedge taper angle (θ 2 ), and wedge member length (L).
2 ) We have developed the fixing device specified in the relation.
【０００７】本発明はこのような、定着装置を提供する
ことを目的とする。An object of the present invention is to provide such a fixing device.
【０００８】[0008]
【課題を解決するための手段】本発明は、１又は複数の
円錐テーパ孔を有する定着体と、各円錐テーパ孔に嵌入
して緊張材定着する楔体とからなる定着装置において、 θ＝θ 1 −θ 2 θ＝０．７〜１．５度 Ｌ1 ＝３０ｍｍを越え１００ｍｍ以下 θ／Ｌ1 ＝０．０１５〜０．０３ ただし、 θ1 ：楔体のテーパ角（外径テーパの中心線との傾き）
（度） θ2 ：定着体のテーパ角（内径テーパの中心線との傾
き）（度） Ｌ1 ：楔体の軸方向長さ（ｍｍ） であることを特徴とする定着装置である。さらに、 Ｌ1 ／Ｌ2 ＝０．７〜０．９ ただし、 Ｌ2 ：定着体のテーパ部の軸方向長さ（ｍ
ｍ） とすると好適である。SUMMARY OF THE INVENTION The present invention includes a fixing member having one or more conical tapered hole, the fixing device comprising a wedge body which tendon fixing fitted into the conical tapered hole, theta = theta 1− θ 2 θ = 0.7 to 1.5 degrees L 1 = 30 mm to 100 mm or less θ / L 1 = 0.015 to 0.03 where θ 1 : taper angle of wedge body (center of outer diameter taper Slope with line)
(Degree) θ 2 : taper angle of the fixing body (inclination with the center line of the inner diameter taper) (degree) L 1 : axial length of the wedge body (mm). L 1 / L 2 = 0.7 to 0.9, where L 2 is the axial length (m) of the tapered portion of the fixing member.
m) is preferable.
【０００９】[0009]
【作用】本発明では、定着体のテーパ角（θ2 ）と楔体
のテーパ角（θ1 ）の差により発生する楔体内面凹凸レ
ベルと緊張材長手方向レベルの角度（θ＝θ 1 −θ 2 ）
を０．７度以上、１．５度以下にする。角度差θは０．
７度未満では、定着効率が十分でなく、疲労に対しても
十分でない。１．５度を越えると楔体後端（円周の大き
い方）のみでＰＣ鋼より線を定着することとなり、すべ
りを発生するので不可である。さらに好ましい角度差θ
としては０．８度以上、最も好ましくは０．９度を越え
１．５度以下である。According to the present invention, the angle between the unevenness level on the inner surface of the wedge and the level in the longitudinal direction of the tension member (θ = θ 1 − ) generated by the difference between the taper angle (θ 2 ) of the fixing member and the taper angle (θ 1 ) of the wedge member. θ 2 )
Is set to 0.7 degrees or more and 1.5 degrees or less. The angle difference θ is 0.
If it is less than 7 degrees, the fixing efficiency is not sufficient and the fatigue is not sufficient. If it exceeds 1.5 degrees, the PC steel stranded wire will be fixed only at the rear end of the wedge body (the larger circumference) and slippage will occur, which is not possible. More preferred angle difference θ
Is 0.8 degrees or more, most preferably more than 0.9 degrees and 1.5 degrees or less.
【００１０】楔体の軸方向長さＬ1 を３０ｍｍを越える
値とするのは、３０ｍｍ以下では側圧の不足により楔効
果が発揮できずにすべりが発生するからである。また、
１００ｍｍ以下に限定するのは、１００ｍｍを越えると
コンパクトにならず、高コストであり、作業性が悪いと
いう理由による。図４に角度差（θ）と定着効率の関係
を示すグラフを示した。１５．２ｍｍφのＰＣ鋼より線
用の定着装置で楔体長さ３０ｍｍ、４５ｍｍ、７０ｍｍ
とした定着装置において、定着体のテーパ角（θ2 ）と
楔体のテーパ角（θ1 ）との差θを種々変化させて定着
効率を測定した結果を示している。楔体長さが３０ｍｍ
ではいずれも滑りが生じた。楔体長さが４５ｍｍ、７０
ｍｍではほぼ同じ成績を示し、θが０．７度以上、１．
５度以下で優れた成績を示している。The reason why the axial length L 1 of the wedge body is set to a value exceeding 30 mm is that if it is less than 30 mm, the wedge effect cannot be exerted due to insufficient lateral pressure and slip occurs. Also,
The reason why the diameter is limited to 100 mm or less is that if the diameter exceeds 100 mm, compactness is not achieved, cost is high, and workability is poor. FIG. 4 is a graph showing the relationship between the angle difference (θ) and the fixing efficiency. 15.2mmφ PC steel stranded wire fixing device, wedge length 30mm, 45mm, 70mm
In the fixing device described above, the results of measurement of the fixing efficiency by variously changing the difference θ between the taper angle (θ 2 ) of the fixing body and the taper angle (θ 1 ) of the wedge body are shown. Wedge length 30mm
In each case, slippage occurred. Wedge length 45mm, 70
mm shows almost the same results, and θ is 0.7 degrees or more.
Excellent results are shown below 5 degrees.
【００１１】１５．２ｍｍφのＰＣ鋼より線用の定着装
置で楔体長さ４５ｍｍ、７０ｍｍとした定着装置を用
い、最大荷重を０．６Ｐｕ、全振幅を２５ｋｇｆ／ｍｍ
2 、荷重回数２００万回で、それぞれ試験片３本につい
て疲労試験を行った。図５は角度差（θ）と疲労試験結
果の関係を示すグラフである。角度差θが０．７度以上
１．５度以下で２００万回で断線を生じなかった。Using a fixing device for a 15.2 mmφ PC steel stranded wire having a wedge length of 45 mm and 70 mm, a maximum load of 0.6 Pu and a total amplitude of 25 kgf / mm.
2. Fatigue tests were performed on three test pieces at a load of 2,000,000 times. FIG. 5 is a graph showing the relationship between the angle difference (θ) and the fatigue test result. When the angle difference θ was 0.7 degrees or more and 1.5 degrees or less, no disconnection occurred at 2,000,000 times.
【００１２】以上の結果、本発明では、 θ＝０．７〜１．５度 Ｌ1 ＝３０ｍｍを越え１００ｍｍ以下 と規定した。図６に以上をまとめて角度差θと好適範囲
との関係を示すグラフを示した。As a result, in the present invention, θ = 0.7 to 1.5 degrees L 1 is set to be more than 30 mm and not more than 100 mm. FIG. 6 is a graph showing the relationship between the angle difference θ and the preferred range.
【００１３】楔体長さＬ1 を３０ｍｍを越える寸法とす
る。また、定着性能を左右する主要因がクサビ長さＬ1
とθであり、この両者の関係を規定することにより、あ
る範囲で相対関係にある両者のなかでベストな定着性能
を得ることができる。角度差θを楔体長さＬ1 で割った
値が０．０１５から０．０３の範囲内として定着性能を
向上させる。すなわち、０．０１５≦（θ／Ｌ1 ）≦
０．０３とすることにより、定着は確実に実施されると
ともに、楔体先端での応力集中を軽減して、定着効率・
疲労強度を向上させることができる。The length L 1 of the wedge body is set to a size exceeding 30 mm. The main factor that affects the fixing performance is the wedge length L 1.
By defining the relationship between the two, it is possible to obtain the best fixing performance among the two having a relative relationship within a certain range. Angular difference divided by the wedge length L 1 of θ is to improve fixing performance as in the range of 0.015 0.03. That is, 0.015 ≦ (θ / L 1 ) ≦
By setting the ratio to 0.03, fixing can be performed reliably, stress concentration at the tip of the wedge body can be reduced, and fixing efficiency and
Fatigue strength can be improved.
【００１４】また、定着体のテーパ部の長さＬ2 を楔体
長さＬ1 で割った値が０．７から０．９の範囲内とす
る。０．７≦（Ｌ2 ／Ｌ1 ）≦０．９のとき、緊張材の
線径差および楔体のセット差による上記の効果のばらつ
きを減少するので、楔体先端部と定着体テーパ部で発生
する側圧を抑えることが可能となる。The value obtained by dividing the length L 2 of the taper portion of the fixing member by the length L 1 of the wedge member is in the range of 0.7 to 0.9. When 0.7 ≦ (L 2 / L 1 ) ≦ 0.9, variations in the above-described effects due to the difference in the wire diameter of the tendon and the difference in the set of the wedge members are reduced. It is possible to suppress the side pressure generated in the above.
【００１５】[0015]
【実施例】図３は従来の定着装置を示すもので定着体２
と楔体１のテーパ角度が一致している。図３中のＡ部の
部分拡大図を図８に示した。図８は楔体先端部の形状を
示す部分断面図である。楔体１の先端部は定着体２のテ
ーパ部より先方に突出し、隙間３を生ずる。このため、
楔体１の先端に応力集中が生じ、定着効率の低下、疲労
強度の低下を招来する。FIG. 3 shows a conventional fixing device.
And the wedge body 1 have the same taper angle. FIG. 8 shows a partially enlarged view of a portion A in FIG. FIG. 8 is a partial sectional view showing the shape of the wedge tip. The leading end of the wedge 1 protrudes forward from the tapered portion of the fixing body 2 to form a gap 3. For this reason,
Stress concentration occurs at the tip of the wedge body 1, resulting in a decrease in fixing efficiency and a decrease in fatigue strength.
【００１６】図１は実施例の定着体２と楔体３を示す説
明図である。実施例では、定着体２のテーパ角θ2 （内
径テーパの中心線との傾き）、定着体の円錐テーパ部の
軸方向長さＬ2 、楔体１のテーパ角θ1 （内径テーパの
中心線との傾き）、楔体の軸方向長さＬ1 との関係を次
のように規定した。すなわち、 θ＝θ 1 −θ 2 θ＝０．７〜１．５度 Ｌ1 ＝３０ｍｍを越え１００ｍｍ以下 θ／Ｌ1 ＝０．０１５〜０．０３ Ｌ2 ／Ｌ1 ＝０．７〜０．９ とした。図２は角度差θの説明図である。すなわち、楔
体１を定着体２内に嵌入してＰＣ鋼より線（図示省略）
を定着したとき、楔体１はＰＣ鋼より線を掴持する内径
が楔体１の先端部で大きく、後端部で小さくなる。図４
は１５．２ｍｍφのＰＣ鋼より線用の定着装置で楔体長
さＬ1 がそれぞれ３０ｍｍ、４５ｍｍ、７０ｍｍで楔１
のテーパ角θ1 が７度の定着装置の角度差θと定着効率
との関係を示している。楔体長さが３０ｍｍでは滑りが
生じ、４５ｍｍ、７０ｍｍでは、角度差θが０．７度以
上１．５度以下でもっとも優れた成績を示している。FIG. 1 is an explanatory view showing a fixing member 2 and a wedge member 3 of the embodiment. In the embodiment, the taper angle θ 2 of the fixing body 2 (inclination with the center line of the inner diameter taper), the axial length L 2 of the conical taper portion of the fixing body, and the taper angle θ 1 of the wedge body 1 (the center of the inner diameter taper) the slope of the line), and the relationship between the axial length L 1 of the wedge body is defined as follows. That is, θ = θ 1 −θ 2 θ = 0.7 to 1.5 degrees L 1 = over 30 mm and 100 mm or less θ / L 1 = 0.015 to 0.03 L 2 / L 1 = 0.7 to 0 0.9. FIG. 2 is an explanatory diagram of the angle difference θ. That is, the wedge body 1 is inserted into the fixing body 2 and a PC steel stranded wire (not shown) is used.
When the wedge body 1 is fixed, the inner diameter of the wedge body 1 for gripping the strand of PC steel is large at the front end of the wedge body 1 and is small at the rear end. FIG.
Is a fixing device for a 15.2 mmφ PC steel stranded wire, and has a wedge length L 1 of 30 mm, 45 mm, 70 mm, and a wedge 1.
Shows the relationship between the angle difference θ of the fixing device having a taper angle θ 1 of 7 degrees and the fixing efficiency. When the wedge length is 30 mm, slippage occurs. When the wedge length is 45 mm and 70 mm, the best results are obtained when the angle difference θ is 0.7 degrees or more and 1.5 degrees or less.
【００１７】図５は１５．２ｍｍφのＰＣ鋼より線用の
定着装置で楔体長さ４５ｍｍ、７０ｍｍの定着装置を用
い、最大荷重を０．６Ｐｕ、全振幅を２５ｋｇｆ／ｍｍ
2 、荷重回数２００万回で、それぞれ試験片３本につい
て疲労試験を行った時のθと疲労試験結果の関係を示す
グラフである。角度差θが０．７度以上１．５度以下で
断線がなく１００％合格であった。FIG. 5 shows a fixing device for a 15.2 mmφ PC steel stranded wire using a fixing device having a wedge length of 45 mm and 70 mm, a maximum load of 0.6 Pu, and a total amplitude of 25 kgf / mm.
2 is a graph showing the relationship between θ and the fatigue test result when a fatigue test was performed on three test pieces with 2 million loadings. When the angle difference θ was 0.7 degrees or more and 1.5 degrees or less, there was no disconnection and the sample passed 100%.
【００１８】図６は角度差θと楔体１の長さＬ1 との関
係を示すグラフで、定着不良と、コストや作業性の観点
から、３０ｍｍを越え１００ｍｍ以下が適切である。ま
た図７に楔体１長さＬ1 と、定着体２のテーパ部の長さ
Ｌ2 との関係を示すグラフを示した。斜線で示す定着不
良（定着効率低下、疲労強度低下、滑り低下）となる範
囲を除く領域が適切であり、優れた特性を示す。FIG. 6 is a graph showing the relationship between the angle difference θ and the length L 1 of the wedge body 1. From the viewpoint of poor fixing and cost and workability, it is appropriate that the distance is more than 30 mm and 100 mm or less. Also shows a graph illustrating the wedge 1 length L 1 in FIG. 7, the fixing member 2 the relationship between the length L 2 of the tapered portion. The region excluding the range where the fixing failure (reduction in fixing efficiency, reduction in fatigue strength, reduction in slippage) indicated by oblique lines is appropriate, and shows excellent characteristics.
【００１９】[0019]
【発明の効果】本発明によれば、プレストレストコンク
リート構造物・斜張橋用斜材・アンカー用等のＰＣ鋼材
の定着装置における、すべり、定着効率、疲労強度等の
定着効率が高く、また大きさ、低コスト等を達成するこ
とができるという優れた効果を奏する。According to the present invention, in a fixing device for PC steel such as a prestressed concrete structure, a diagonal member for a cable-stayed bridge, an anchor, etc., fixing efficiency such as slip, fixing efficiency, fatigue strength and the like is high and large. An excellent effect that low cost and the like can be achieved is achieved.
【図１】実施例の定着体と楔体を示す説明図である。FIG. 1 is an explanatory diagram illustrating a fixing body and a wedge body according to an embodiment.
【図２】角度差（θ）の説明図である。FIG. 2 is an explanatory diagram of an angle difference (θ).
【図３】従来の定着体と楔体の説明図である。FIG. 3 is an explanatory diagram of a conventional fixing body and a wedge body.
【図４】角度差と定着効率の関係を示すグラフである。FIG. 4 is a graph showing a relationship between an angle difference and a fixing efficiency.
【図５】角度差と疲労試験結果の関係を示すグラフであ
る。FIG. 5 is a graph showing a relationship between an angle difference and a fatigue test result.
【図６】角度差と楔体長さの関係を示すグラフである。FIG. 6 is a graph showing a relationship between an angle difference and a wedge length.
【図７】楔体長さと定着体テーパ部の長さの関係を示す
グラフである。FIG. 7 is a graph showing a relationship between a length of a wedge body and a length of a fixing body taper portion.
【図８】楔体先端部の形状を示す部分断面図である。FIG. 8 is a partial sectional view showing a shape of a wedge tip.
１ 楔体 ２ 定着体 ３ 隙間 1 wedge body 2 fixing body 3 gap
───────────────────────────────────────────────────── フロントページの続き (72)発明者 庄司 茂雄 千葉市中央区新浜町１番地 川鉄テクノ ワイヤ株式会社内 (72)発明者 峰 公雄 東京都千代田区内幸町２丁目２番３号 川崎製鉄株式会社 東京本社内 (72)発明者 坂吉 利邦 東京都千代田区内幸町２丁目２番３号 川崎製鉄株式会社 東京本社内 (72)発明者 中村 茂樹 東京都千代田区内幸町２丁目２番３号 川崎製鉄株式会社 東京本社内 (72)発明者 鈴木 昭好 東京都千代田区二番町12番地 株式会社 エスイー内 (72)発明者 大橋 渡 東京都千代田区二番町12番地 株式会社 エスイー内 (72)発明者 平山 晃 東京都千代田区二番町12番地 株式会社 エスイー内 (58)調査した分野(Int.Cl.6，ＤＢ名) E04C 5/12 E04G 21/12 104──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shigeo Shoji 1 Shinhama-cho, Chuo-ku, Chiba City Inside Kawatetsu Techno Wire Co., Ltd. (72) Kimio Mine In 2-3-2 Uchisaiwaicho, Chiyoda-ku, Tokyo Kawasaki Steel Corporation Tokyo Head Office (72) Inventor Toshikuni Sakayoshi 2-3-2 Uchisaiwaicho, Chiyoda-ku, Tokyo Kawasaki Steel Corporation Tokyo Headquarters (72) Inventor Shigeki Nakamura 2-3-2 Uchisaiwaicho, Chiyoda-ku, Tokyo Kawasaki Steel Corporation Company headquarters in Tokyo (72) Inventor Akiyoshi Suzuki 12th, Nibancho, Chiyoda-ku, Tokyo Inside S.E. Co., Ltd. (72) Inventor Wataru Ohashi 12th, Nibancho, Chiyoda-ku, Tokyo S.E.U.S. (72) Inventor Akira Hirayama 12, Nibancho, Chiyoda-ku, Tokyo SEI Co., Ltd. (58) Field surveyed (Int.Cl. 6 , DB name) E04C 5/12 E04G 21/12 104
Claims (2)
体と、各円錐テーパ孔に嵌入して緊張材を定着する楔体
とからなる定着装置において、 θ＝θ 1 −θ 2 θ＝０．７〜１．５度 Ｌ1 ＝３０ｍｍを越え１００ｍｍ以下 θ／Ｌ1 ＝０．０１５〜０．０３ ただし、 θ1 ：楔体のテーパ角（外径テーパの中心線との傾き）
（度） θ2 ：定着体のテーパ角（内径テーパの中心線との傾
き）（度） Ｌ1 ：楔体の軸方向長さ（ｍｍ） であることを特徴とする定着装置。1. A fixing device comprising: a fixing member having one or a plurality of conical tapered holes; and a wedge body which is fitted into each of the conical tapered holes to fix a tension member, wherein θ = θ 1 −θ 2 θ = 0. 0.7 to 1.5 degrees L 1 = more than 30 mm and 100 mm or less θ / L 1 = 0.015 to 0.03 where θ 1 : taper angle of the wedge body (inclination with the center line of the outer diameter taper)
(Degree) θ 2 : taper angle of the fixing body (inclination with the center line of the inner diameter taper) (degree) (degree) L 1 : axial length (mm) of the wedge body.
ｍ）であることを特徴とする請求項１記載の定着装置。Wherein L 2 / L 1 = 0.7~0.9 However, L 2: axial length of the tapered portion of the fixing body (m
The fixing device according to claim 1, wherein m).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15611094A JP2771774B2 (en) | 1994-07-07 | 1994-07-07 | Fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15611094A JP2771774B2 (en) | 1994-07-07 | 1994-07-07 | Fixing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0821033A JPH0821033A (en) | 1996-01-23 |
| JP2771774B2 true JP2771774B2 (en) | 1998-07-02 |
Family
ID=15620536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15611094A Expired - Fee Related JP2771774B2 (en) | 1994-07-07 | 1994-07-07 | Fixing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2771774B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014188469A1 (en) * | 2013-05-20 | 2014-11-27 | 極東鋼弦コンクリート振興株式会社 | Anchoring device for fiber reinforced plastic filament |
-
1994
- 1994-07-07 JP JP15611094A patent/JP2771774B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0821033A (en) | 1996-01-23 |
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