JPH01249304A - Prestressed concrete tensioning material made of fiber-reinforced synthetic resin provided with anchor and its manufacture - Google Patents
Prestressed concrete tensioning material made of fiber-reinforced synthetic resin provided with anchor and its manufactureInfo
- Publication number
- JPH01249304A JPH01249304A JP7601088A JP7601088A JPH01249304A JP H01249304 A JPH01249304 A JP H01249304A JP 7601088 A JP7601088 A JP 7601088A JP 7601088 A JP7601088 A JP 7601088A JP H01249304 A JPH01249304 A JP H01249304A
- Authority
- JP
- Japan
- Prior art keywords
- sleeve
- frp
- fiber
- synthetic resin
- prestressed concrete
- 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
- 239000000463 material Substances 0.000 title claims abstract description 104
- 239000011513 prestressed concrete Substances 0.000 title claims description 20
- 229920003002 synthetic resin Polymers 0.000 title claims description 18
- 239000000057 synthetic resin Substances 0.000 title claims description 18
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 239000000853 adhesive Substances 0.000 claims abstract description 20
- 230000006835 compression Effects 0.000 claims abstract description 10
- 238000007906 compression Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 7
- 210000002435 tendon Anatomy 0.000 claims description 58
- 229910052751 metal Inorganic materials 0.000 claims description 30
- 239000002184 metal Substances 0.000 claims description 30
- 239000012790 adhesive layer Substances 0.000 claims description 25
- 238000002788 crimping Methods 0.000 claims description 23
- 230000001070 adhesive effect Effects 0.000 claims description 16
- 125000006850 spacer group Chemical group 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 239000012783 reinforcing fiber Substances 0.000 description 5
- 239000003822 epoxy resin Substances 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 206010016654 Fibrosis Diseases 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007882 cirrhosis Effects 0.000 description 1
- 208000019425 cirrhosis of liver Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000007586 pull-out test Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
- E04C5/085—Tensile members made of fiber reinforced plastics
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
- E04C5/12—Anchoring devices
- E04C5/127—The tensile members being made of fiber reinforced plastics
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、プレストレストコンクリートに使用される
定着具付き繊維強化合成樹脂製プレストレストコンクリ
ート緊張材およびその製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a fiber-reinforced synthetic resin prestressed concrete tendon with a fixing device used for prestressed concrete, and a method for producing the same.
従来、プレストレストコンクリート部材に用いられる定
着具付き繊維強化合成樹脂製プレストレストコンクリー
ト緊張材としては、＋１１金属製定着用スリーブの内面
とその中に挿通された繊維強化合成樹脂製プレストレス
トコンクリート緊張材（以下これをＦＲＰ緊張材という
）の端部の周面との間に、接着剤を充填して硬化させた
接着結合型の定着具付きＦＲＰ緊張材、（２）金属製定
着用スリーブ内にＦＲＰ緊張材の端部を挿通したのち、
そのスリーブを縮径するように圧縮してＦＲＰ緊張材に
圧着させた圧着結合型の定着具付きＦＲＰ緊張材、（３
）特開昭６０−２０３７６２号公報により公表されてい
るように、ロッド状のＦＲＰ緊張材の端部に、緊張材長
手方向に延長する十字状の割れ目を入れて４本の分割端
片を形成し、テーパー孔を有する金属製定着用スペーサ
をスリーブ直径方向に延長するように十字状に挿通し、
そのスペーサ付き定着スリーブにおけるテーパー孔に前
記各分割端片を挿入すると共に、前記各スペーサを各分
割端片の間に押込んで分割端片群にテーパー外面を形成
し、次に各分割端片相互間および分割端片群のテーパー
外面と定着用スリーブのテーパー孔との間にエポキシ樹
脂系の接着剤を充填した定着具付きＦＲＰ緊張材、（４
）特開昭６０−２０３７６３号公報により公表されてい
るように、ＦＲＰ緊張材の端部の周囲に、樹脂加工され
た補強繊維をＦＲＰ緊張材端面倒に向かって先太りとな
るように緊密に捲回しかつ硬化させて、円錐台状の保合
部を一体に形成し、かつその係合部を金属製定着用スリ
ーブにおける円錐台状の係合孔に嵌合させた定着具付き
ＦＲＰ緊張材等が知られている。Conventionally, fiber-reinforced synthetic resin prestressed concrete tensioning material with fixing devices used in prestressed concrete members has been manufactured by using fiber-reinforced synthetic resin prestressed concrete tensioning material inserted into the inner surface of +11 metal anchoring sleeve (hereinafter referred to as "prestressed concrete tensioning material"). (2) FRP tension material with an adhesive bonding type fixing device filled with adhesive and cured between the peripheral surface of the end of the FRP tension material (2) FRP tension material in the metal fixing sleeve After inserting the end of
An FRP tension material with a crimp type fixing device, which is compressed to reduce the diameter of the sleeve and crimped onto the FRP tension material, (3
) As disclosed in Japanese Unexamined Patent Publication No. 60-203762, a cross-shaped crack extending in the longitudinal direction of the rod-shaped FRP tendon is made at the end of the rod-shaped tendon to form four divided end pieces. Then, a metal fixing spacer having a tapered hole is inserted in a cross shape so as to extend in the sleeve diameter direction.
Each divided end piece is inserted into the tapered hole in the spacer-equipped fixing sleeve, and each spacer is pushed between each divided end piece to form a tapered outer surface on the divided end piece group, and then each divided end piece is mutually FRP tension material with a fixing device filled with epoxy resin adhesive between the tapered outer surface of the split end piece group and the tapered hole of the fixing sleeve, (4
) As disclosed in Japanese Patent Application Laid-open No. 60-203763, resin-treated reinforcing fibers are tightly placed around the ends of the FRP tendons so that the ends of the FRP tendons become thicker toward the edges. An FRP tension material with a fixing device, which is wound and cured to integrally form a truncated conical retaining portion, and the engaging portion is fitted into a truncated conical engagement hole in a metal fixing sleeve. etc. are known.
前記＋１１の定着具付きＦＲＰ緊張材の場合は、スリー
ブとＦＲＰ緊張材との接着力のみによって緊張力に抵抗
させているので、スリーブ単位長−さ当りの結合力が弱
く、そのためスリーブの長さが著しく長くなる。前記（
２）の定着具付きＦＲＰ緊張材の場合は、スリーブの圧
縮率を大きくすることにより、スリーブ単位長さ当りの
結合力を大きくしてスリーブの長さを短かくできるが、
ＦＲＰ緊張材は金属製定着用スリーブよりも著しく軟質
であるので、スリーブの圧縮率をあまり大きくすると、
ＦＲＰ緊張材の繊維に大きなせん断力が作用し、そのた
めＦＲＰ緊張材に比較的小さな張力が作眉しても、その
ＦＲＰ緊張材がスリーブの内部または端部の部分で破断
するという問題が発生する。In the case of the above +11 FRP tension material with fixing device, the tension force is resisted only by the adhesive force between the sleeve and the FRP tension material, so the bonding force per unit length of the sleeve is weak, and therefore the length of the sleeve is becomes significantly longer. Said (
In the case of 2) FRP tension material with a fixing device, by increasing the compression ratio of the sleeve, the bonding force per unit length of the sleeve can be increased and the length of the sleeve can be shortened.
FRP tendons are significantly softer than metal fixing sleeves, so if the compression ratio of the sleeve is increased too much,
A large shearing force acts on the fibers of the FRP tendon, so even if a relatively small tension is applied to the FRP tendon, the problem arises that the FRP tendon breaks inside the sleeve or at the end. .
また前記（３）の定着具付きＦＲＰ緊張材の場合は、構
造が複雑であると共に結合工程が煩雑でコスト高になり
、かつＦＲＰ緊張材の端部に十字状の割れ目を入れてい
るので、その割れ目の端部に応力が集中し、母材耐力以
下の比較的小さな張力で破断するという問題がある。さ
らに前記（４）の定着具付きＦＲＰ緊張材の場合は、Ｆ
ＲＰ緊張材の端部の周囲に、樹脂加工された補強繊維を
捲回しかつ硬化させて、円錐台状の係合部を形成するの
で、補強繊維の捲回数が著しく多くなって製作が煩雑で
あり、かつスリーブにおける円錐台状の係合孔に完全に
合致する円錐台状の保合部を補強繊維の捲回によって形
成することは困難である。さらに複数本のＦＲＰ緊張材
を重ね合わせた状態の補強繊維を捲回すると、ＦＲＰ緊
張材相互間に空隙部が生じ、そのため大きい結合力が得
られない等の問題がある。In addition, in the case of the FRP tendon with fixing device (3) above, the structure is complicated, the joining process is complicated and the cost is high, and a cross-shaped crack is made at the end of the FRP tendon. There is a problem in that stress is concentrated at the ends of the cracks, and breakage occurs at relatively small tensions below the yield strength of the base material. Furthermore, in the case of the FRP tension material with fixing device (4) above, F
Since resin-treated reinforcing fibers are wound around the ends of the RP tension material and cured to form a truncated conical engagement part, the number of times the reinforcing fibers are wound is significantly increased, making manufacturing complicated. However, it is difficult to form a truncated conical retaining portion that perfectly matches the truncated conical engagement hole in the sleeve by winding reinforcing fibers. Furthermore, when reinforcing fibers are wound in a state where a plurality of FRP tendons are stacked one on top of the other, voids are created between the FRP tendons, which causes problems such as not being able to obtain a large bonding force.
この発明は簡単な手段によって金属製定着用スリーブと
ＦＲＰ緊張材とを強力にかつ低コストで結合できる定着
具付きＦＲＰ緊張材およびその製造方法を提供すること
を目的とするものである。An object of the present invention is to provide an FRP tendon material with a fixing device that can connect a metal fixing sleeve and an FRP tension material strongly and at low cost by simple means, and a method for manufacturing the same.
〔課題を解決するための手段］
前記目的を達成するために、この発明の定着具付きＦＲ
Ｐ緊張材においては、金属製定着用スリーブ１の内周面
とその中に挿通されたＦＲＰ緊張材２の端部の周面とが
、それらの間に介在された接着剤層３により接着結合さ
れ、前記スリーブ１が縮径するように圧縮されて、その
スリーブｌと接着剤層３とＦＲＰ緊張材２とが圧着結合
されている。[Means for Solving the Problems] In order to achieve the above object, an FR with a fixing device of the present invention is provided.
In the P tension material, the inner peripheral surface of the metal fixing sleeve 1 and the peripheral surface of the end of the FRP tension material 2 inserted therein are adhesively bonded by the adhesive layer 3 interposed between them. The sleeve 1 is compressed to reduce its diameter, and the sleeve 1, the adhesive layer 3, and the FRP tension material 2 are bonded together by pressure.
また１本のスリーブ１に複数本のＦＲＰ緊張材２を定着
させるために、１本のスリーブ１とその中に挿通された
複数本のＦＲＰ緊張材２の端部とを接着剤層３により接
着結合し、かつ前記スリーブ１を圧縮してそのスリーブ
１と各ＦＲＰ緊張材２とを圧着結合する。In addition, in order to fix a plurality of FRP tension materials 2 to one sleeve 1, one sleeve 1 and the ends of the plurality of FRP tension materials 2 inserted therein are bonded together using an adhesive layer 3. Then, the sleeve 1 is compressed to connect the sleeve 1 and each FRP tension member 2 by pressure.
さらにスリーブ１と接着剤層３との結合強度を大きくす
るためにスリーブ１の内周面にねじ４を設ける。Furthermore, a screw 4 is provided on the inner peripheral surface of the sleeve 1 in order to increase the bonding strength between the sleeve 1 and the adhesive layer 3.
また金属製定着用スリーブ１の内周面とその中に挿通さ
れたＦＲＰ緊張材２の端部の周面との間に接着剤を充填
して接着剤層３を設け、その接着剤層３が硬化したのち
、前記スリーブ１を縮径するように圧縮して、そのスリ
ーブ１と接着剤層３とＦＲＰ緊張材２とを圧着結合させ
ることにより接着圧着結合型の定着具付きＦＲＰ緊張材
を製造する。Further, an adhesive layer 3 is provided by filling an adhesive between the inner peripheral surface of the metal fixing sleeve 1 and the peripheral surface of the end of the FRP tension material 2 inserted therein. After curing, the sleeve 1 is compressed to reduce its diameter, and the sleeve 1, the adhesive layer 3, and the FRP tension material 2 are bonded together by pressure, thereby producing an adhesive pressure bonded FRP tension material with a fixing device. Manufacture.
さらに圧着後のスリーブ１の外径が圧縮前のスリーブの
外径の９３〜９９％になると共に、圧着後のスリーブ１
の伸び世が１５％以下になるようにスリーブ１を圧縮し
、圧着後のスリーブ１のビッカース硬変を１００〜２０
０Ｈｖの範囲に設定する製造方法もある。またスリーブ
１の内面とＦＲＰ緊張材２との間に予め間Ｍ保持用スペ
ーサ５を介在させて所定の間隔に保持してもよい。Further, the outer diameter of the sleeve 1 after crimping becomes 93 to 99% of the outer diameter of the sleeve before compression, and the sleeve 1 after crimping
Sleeve 1 is compressed so that the elongation is 15% or less, and the Vickers cirrhosis of sleeve 1 after crimping is 100 to 20%.
There is also a manufacturing method that sets the temperature within the range of 0 Hv. Alternatively, a spacer 5 for maintaining the distance M may be interposed in advance between the inner surface of the sleeve 1 and the FRP tension material 2 to maintain a predetermined distance.
金属製定着用スリーブ１とＦＲＰ緊張材２とを接着剤層
３により接着結合すると共に、その接着結合されたスリ
ーブ１とＦＲＰ緊張材２とをスリーブ１の圧縮により圧
着結合する。また１本のスリーブ１に複数本のＦＲＰ緊
張材２を定着させるために、１本のスリーブ１とその中
に挿通された複数本のＦＲＰ緊張材２の端部とを接着剤
層３により接着結合し、かつ前記スリーブ１を圧縮して
そのスリーブ１と各ＦＲＰ緊張材２とを圧着結合する。A metal fixing sleeve 1 and an FRP tension material 2 are adhesively bonded together by an adhesive layer 3, and the adhesively bonded sleeve 1 and FRP tension material 2 are crimped and bonded by compression of the sleeve 1. In addition, in order to fix a plurality of FRP tension materials 2 to one sleeve 1, one sleeve 1 and the ends of the plurality of FRP tension materials 2 inserted therein are bonded together using an adhesive layer 3. Then, the sleeve 1 is compressed to connect the sleeve 1 and each FRP tension member 2 by pressure.
さらにスリーブ１と接着剤層３との結合強度を大きくす
るためにスリーブ１の内周面にねじ４を設ける。またス
リーブ１の内面とＦＲＰ緊張材２との間に予め間隔保持
用スペーサ５を介在させて所定の間隔に保持する。Furthermore, a screw 4 is provided on the inner peripheral surface of the sleeve 1 in order to increase the bonding strength between the sleeve 1 and the adhesive layer 3. Further, a spacer 5 for maintaining a distance is interposed in advance between the inner surface of the sleeve 1 and the FRP tension material 2 to maintain a predetermined distance.
次にこの発明を図示の例によって詳細に説明する。 Next, the present invention will be explained in detail using illustrated examples.
第１図ないし第３図はこの発明の第１実施例に係る定着
具付きＦＲＰ緊張材を製造するときの順序を示すもので
あって、ガラス繊維、炭素繊維。1 to 3 show the order of manufacturing an FRP tendon with a fixing device according to a first embodiment of the present invention, in which glass fiber and carbon fiber are used.
芳香族ポリアミド繊維等からなる多数の極細の長繊維に
、硬化剤等を配合したエポキシ樹脂等の熱硬化性樹脂液
が含浸され、次いでその樹脂含浸長繊維群が、引き揃え
られた状態で、成形用ダイスに通されて引抜かれること
により円形断面に成形され、次いで前記熱硬化性樹脂液
が加熱により硬化されて、円形断面のＦＲＰ緊張材２が
構成される。A large number of ultra-fine long fibers made of aromatic polyamide fibers etc. are impregnated with a thermosetting resin liquid such as epoxy resin containing a curing agent etc., and then the resin-impregnated long fibers are aligned, The material is passed through a molding die and drawn to be formed into a circular cross section, and then the thermosetting resin liquid is cured by heating to form an FRP tendon material 2 having a circular cross section.
次に第１図に示すように、円筒状の金属製スリーブ１内
にＦＲＰ緊張材２の端部が挿通されると共に、前記スリ
ーブ１の内周面全体とＦＲＰ緊張材２の周面との間にエ
ポキシ樹脂系の接着剤層３が注入充填される。その接着
剤層３が硬化してスリーブｌとＦＲＰ緊張材２とが接着
結合されたのち、第２図および第３図に示すように、ス
リーブｌがその全長にわたって縮径するように圧縮され
て、スリーブ１とＦＲＰ緊張材２とが接着剤層３を介し
て圧着結合される。Next, as shown in FIG. 1, the end of the FRP tendon 2 is inserted into the cylindrical metal sleeve 1, and the entire inner circumferential surface of the sleeve 1 and the circumferential surface of the FRP tendon 2 are connected. An epoxy resin adhesive layer 3 is injected and filled in between. After the adhesive layer 3 hardens and the sleeve 1 and the FRP tendon 2 are adhesively bonded, the sleeve 1 is compressed to reduce its diameter over its entire length, as shown in FIGS. 2 and 3. , the sleeve 1 and the FRP tension material 2 are press-bonded via the adhesive layer 3.
前記スリーブ１を圧縮する場合、圧着後のスリーブ１の
外径ｄが圧縮前のスリーブ１の外径りの９３〜９９％、
圧着後のスリーブ１の伸び量が１５％以下、圧着後のス
リーブ１のビッカース硬度が１００〜２００Ｈｖの範囲
になるように、スリーブｌを圧縮する。When compressing the sleeve 1, the outer diameter d of the sleeve 1 after crimping is 93 to 99% of the outer diameter of the sleeve 1 before compression,
The sleeve 1 is compressed so that the amount of elongation of the sleeve 1 after crimping is 15% or less, and the Vickers hardness of the sleeve 1 after crimping is in the range of 100 to 200 Hv.
前記外径ｄの値が外径りの値の９９％を越えると、圧着
力が急激に低下し大きな圧着力を得ることができず、ま
た外径ｄの値が外径りの値の９３％よりも小さくなると
、圧着力が大き過ぎてＦＲＰ緊張材に大きなせん断力が
作用するので、ＦＲＰ緊張材が比較的小さな引張荷重で
破断する。したがって、ｄ／Ｄの値を９３〜９９％の範
囲に設定する必要がある。When the value of the outer diameter d exceeds 99% of the value of the outer diameter, the crimping force decreases rapidly and a large crimping force cannot be obtained, and the value of the outer diameter d exceeds 99% of the value of the outer diameter. %, the crimp force is too large and a large shearing force acts on the FRP tension material, causing the FRP tension material to break under a relatively small tensile load. Therefore, it is necessary to set the value of d/D in the range of 93 to 99%.
圧着後のスリーブｌのビッカース硬度が１００１１ｖよ
り低いと、スリーブが軟か過ぎて定着後に変形し、ＦＲ
Ｐ緊張材がスリーブに対しずれ動く可能性があり、かつ
スリーブ１内にねじを設ける場合は、前記可能性がさら
に高くなる。また圧着後のスリーブのビッカース硬度が
２００Ｈｖを越えると、スリーブの剛性が高すぎて圧着
効率が悪くなる。したがって、圧着後のスリーブのビッ
カース硬度を１００〜２００Ｈｖの範囲に設定する必要
力（ある。If the Vickers hardness of the sleeve l after crimping is lower than 10011v, the sleeve will be too soft and will deform after fixing, causing the FR
If there is a possibility that the P tendon will shift relative to the sleeve, and if a screw is provided in the sleeve 1, this possibility becomes even higher. Furthermore, if the Vickers hardness of the sleeve after crimping exceeds 200 Hv, the rigidity of the sleeve will be too high and the crimping efficiency will deteriorate. Therefore, there is a necessary force to set the Vickers hardness of the sleeve after crimping in the range of 100 to 200 Hv.
圧着後のスリーブの伸び量が圧着前のスリーブの長さの
１５％を越えると、スリーブの伸びによりスリーブ内の
ＦＲＰ緊張材に大きな引張力が作用して、スリーブ内の
ＦＲＰ緊張材が破断する恐れがある。したがって、圧着
後のスリーブの伸び量を圧着前のスリーブの長さの１５
％以下にする必要がある。If the length of the sleeve after crimping exceeds 15% of the length of the sleeve before crimping, a large tensile force will be applied to the FRP tension material inside the sleeve due to the elongation of the sleeve, causing the FRP tension material inside the sleeve to break. There is a fear. Therefore, the amount of elongation of the sleeve after crimping is 15 times the length of the sleeve before crimping.
% or less.
第４図および第５図はこの発明の第２実施例に係る定着
具付きＦＲＰ緊張材を示すものであって、円筒状の１本
の金属製定着用スリーブ１内に、３本のＦＲＰ緊張材２
の端部が挿通されているが、その他の構成は第１実施例
の場合と同様である。4 and 5 show an FRP tension member with a fixing device according to a second embodiment of the present invention, in which three FRP tension members are arranged in one cylindrical metal fixing sleeve 1. Material 2
The other end portion is inserted, but the other structure is the same as that of the first embodiment.
第６図はこの発明の第３実施例に係る定着具付きＦＲＰ
緊張材を示すものであって、金属製定着用スリーブ１の
内面にねじ４が形成されているが、その他の構成は第１
実施例の場合と同様である。FIG. 6 shows an FRP with a fixing device according to a third embodiment of the present invention.
This shows a tension material, and a screw 4 is formed on the inner surface of the metal fixing sleeve 1, but the other configuration is the same as the first one.
This is the same as in the embodiment.
第７図はこの発明の第４実施例に係る定着具付きＦＲＰ
緊張材を示すものであって、金属製定着用スリーブ１に
ＦＲＰ緊張材２の中間側の一端部から他端部に向かって
拡大するテーパー内面６が形成されているが、その他の
構成は第１実施例の場合と同様である。FIG. 7 shows an FRP with a fixing device according to a fourth embodiment of the present invention.
This shows a tension material, and a tapered inner surface 6 that expands from one end on the intermediate side of the FRP tension material 2 toward the other end is formed on the metal fixing sleeve 1. This is the same as in the first embodiment.
第８図はこの発明の第５実施例に係る定着具付きＦＲＰ
緊張材を示すものであって、金属製定着用スリーブ１の
外面に雄ねじ７が設けられているが、その他の構成は第
１実施例の場合と同様である。FIG. 8 shows an FRP with a fixing device according to a fifth embodiment of the present invention.
This shows a tension member, and a male screw 7 is provided on the outer surface of the metal fixing sleeve 1, but the other configuration is the same as that of the first embodiment.
第９図および第１０図はこの発明の第６実施例に係る定
着具付きＦＲＰ緊張材を示すものであって、円筒状の１
本の金属製定着用スリーブ１内に、アルミ線からなる間
隔保持用スペーサ５を巻付けた３本のＦＲＰ緊張材２の
端部が挿通されているが、その他の構成は第１実施例の
場合と同様である。9 and 10 show an FRP tension material with a fixing device according to a sixth embodiment of the present invention, in which a cylindrical one
The ends of three FRP tension members 2 wrapped with spacers 5 made of aluminum wire are inserted into the metal fixing sleeve 1 of the book, but the other structure is the same as that of the first embodiment. Same as in case.
第１１図および第１２図はこの発明の第７実施例に係る
定着具付きＦＲＰ緊張材を示すものでありで、円筒状の
１本の金属製定着用スリーブ１内の両端部に、等間隔で
設けられた３つの円形孔を有する板状のプラスチック製
間隔保持用スペーサ５が嵌合され、３木のＦＲＰ緊張材
２の端部が各スペーサ５の透孔にわたって挿通されてい
るが、その他の構成は第１実施例の場合と同様である。11 and 12 show an FRP tension material with a fixing device according to a seventh embodiment of the present invention. A plate-shaped plastic spacing spacer 5 having three circular holes provided in the spacer 5 is fitted, and the end of the three-wood FRP tendon material 2 is inserted across the through hole of each spacer 5. The configuration is similar to that of the first embodiment.
第７実施例の場合はスリーブｌを圧縮したときスペーサ
５が容易に破壊される。In the case of the seventh embodiment, the spacer 5 is easily destroyed when the sleeve 1 is compressed.
第１３図および第１４図はこの発明の第８実施例に係る
定着具付きＦＲＰ緊張材を示すものであって、金属製定
着用スリーブｌにおける中心線の周りに、３つの貫通孔
８が等角度間隔で設けられ、各貫通孔８にそれぞれＦＲ
Ｐ緊張材２の端部が挿通されると共に接着剤層３が充填
されているが、その他の構成は第１実施例の場合と同様
である。13 and 14 show an FRP tension material with a fixing device according to an eighth embodiment of the present invention, in which three through holes 8 are formed equally around the center line of a metal fixing sleeve l. are provided at angular intervals, and each through hole 8 has a FR
Although the end of the P tension material 2 is inserted through and filled with the adhesive layer 3, the other configurations are the same as in the first embodiment.
第６実施例および第７実施例の場合は、スリーブｌの内
面と各ＦＲＰ緊張材２との間に均等な大きさの間隔が設
けられると共に、各ＦＲＰ緊張材２の間にも均等な大き
さの間隔が設けられるので、一定品質の定着具付きＦＲ
Ｐ緊張材を製造することができる。In the case of the sixth embodiment and the seventh embodiment, equal-sized intervals are provided between the inner surface of the sleeve l and each FRP tendon material 2, and equal-sized intervals are also provided between each FRP tendon material 2. FR with fixing device of constant quality.
P tendons can be manufactured.
次に前記従来の（１）の定着用スリーブ接着結合ＦＲＰ
緊張材に関する試料１ （ＦＲＰ緊張材１本）。Next, the conventional (1) fixing sleeve adhesive bonded FRP
Sample 1 regarding tendons (1 piece of FRP tendon).
試料２ （ＦＲＰ緊張材３本）、試料３ （ＦＲＰ緊張
材６本）と、前記従来の（２）の定着用スリーブ圧着結
合ＦＲＰ緊張材に関する試料４ （ＦＲＰ緊張材１本）
、試料５ （ＦＲＰ緊張材３本）、試料６（ＦＲＰ緊張
材６本）と、この発明の定着用スリーブ接着圧着結合Ｆ
ＲＰ緊張材に関する試料７（ＦＲＰ緊張材１本使用）、
試料８ （ＦＲＰ緊張材３本使用）、試料９ （ＦＲＰ
緊張材６本使用）とを製作し、スリーブからのＦＲＰ緊
張材の引抜抵抗試験を行なった試験例について説明する
。Sample 2 (3 pieces of FRP tendon material), Sample 3 (6 pieces of FRP tendon material), and Sample 4 (1 piece of FRP tendon material) related to the conventional (2) fixing sleeve crimping bonded FRP tendon material
, Sample 5 (3 pieces of FRP tension material), Sample 6 (6 pieces of FRP tension material), and the fixing sleeve adhesive pressure bonding F of the present invention.
Sample 7 regarding RP tension material (using one FRP tension material),
Sample 8 (using 3 FRP tendons), Sample 9 (FRP
A test example in which a test piece (6 pieces of FRP tendon material was used) was manufactured and a pull-out resistance test of the FRP tendon material from the sleeve was conducted will be described.
試験の際にＦｒ１Ｐ緊張材とスリーブとの間に滑りを生
じさせるために極端に短かいスリーブを使用して下記の
条件で試料を作成した。In order to cause slippage between the Fr1P tendon and the sleeve during the test, samples were prepared under the following conditions using an extremely short sleeve.
（１） スリーブの材質およびＦＲＰ緊張材挿通前の
スリーブの長さ
材質：機械構造用炭素鋼（ＪＩＳ Ｇ４０５１Ｓ１５
ＧＫ）
長さ：１００＋ｍ＋ｗ
（２１ＦＲＰ緊張材挿通前のスリーブの外径、内径およ
びスリーブ結合後のスリーブの外径を第１表に示す。(1) Sleeve material and length of sleeve before inserting FRP tension material Material: Carbon steel for mechanical structures (JIS G4051S15
GK) Length: 100+m+w (Table 1 shows the outer diameter and inner diameter of the sleeve before inserting the 21FRP tendon, and the outer diameter of the sleeve after the sleeves are joined.
第 １ 表
（３）ＦＲＰ緊張材
材質：炭素繊維強化合成樹脂
直径： １２．５ ａｍ
（４） 接着剤（試料１．３〜５）
エポキシ樹脂系接着剤
前記各試料について引抜試験を行なったところ、第２表
に示す結果が得られた。Table 1 (3) FRP tendon material: Carbon fiber reinforced synthetic resin Diameter: 12.5 am (4) Adhesive (Samples 1.3 to 5) Epoxy resin adhesive A pullout test was conducted on each of the above samples. , the results shown in Table 2 were obtained.
第２表
（注）最大引抜抵抗力 ： 引抜時の荷重（−スリーブ
内のＦＲＰ緊張材の外周面積の和第２表からもわかるよ
うに、１本の緊張材を使用した場合について引抜抵抗力
を比較すると、従来の接着型の場合は０．８１ Ｋｇ
／ａｍ” 、従来の圧着型の場合は１．３８ Ｋｇ ７
ｍｍ”であるのに対し、この発明の場合は、２゜１６
Ｋｇ ７ｍｍ”であり、前記従来の接着型の引抜抵抗力
と前記従来の圧着型の引抜抵抗力との和にほぼ等しい大
きな引抜抵抗力を発揮することがわかる。Table 2 (Note) Maximum pull-out resistance: Load at pull-out (-sum of outer circumferential area of FRP tendons in sleeve) As can be seen from Table 2, pull-out resistance when using one tendon In comparison, the conventional adhesive type weighs 0.81 kg.
/am”, 1.38 Kg for the conventional crimp type 7
mm”, whereas in the case of this invention, it is 2°16
Kg 7mm'', and it can be seen that it exhibits a large pull-out resistance force that is approximately equal to the sum of the pull-out resistance force of the conventional adhesive type and the pull-out resistance force of the conventional crimp type.
また３本の緊張材を使用したこの発明の場合および６本
の緊張材を使用したこの発明の場合も、１本の緊張材を
使用したこの発明の場合と、はぼ同程度の大きさの引抜
抵抗力を発揮することがわかる。In addition, in the case of this invention using three tendons and in the case of this invention using six tendons, the size is about the same as in the case of this invention using one tendon. It can be seen that it exhibits pull-out resistance.
第２表に示す試験結果から算出した定着用スリーブの必
要長さを第１５図に示す。第１５図からも、この発明の
場合は、前記従来の接着型および圧着型に比べて、定着
用スリーブの長さを著しく短かくできることがわかる。The required length of the fixing sleeve calculated from the test results shown in Table 2 is shown in FIG. It can also be seen from FIG. 15 that in the case of the present invention, the length of the fixing sleeve can be made significantly shorter than in the conventional adhesive type and pressure bonding type.
またこの発明の場合は、１本の定着用スリーブに対し７
複数本のＦＲＰ緊張材を同時に接着圧着結合できる。In addition, in the case of this invention, seven fixing sleeves are used for one fixing sleeve.
Multiple pieces of FRP tension material can be bonded and bonded at the same time.
液状の接着剤層３を使用する場合、スリーブ１およびＦ
ＲＰ９張材２の端部を縦向きに配置すると共にスリーブ
１の下端部とＦＲＰ緊張材との間に環状の蓋を施した状
態で、スリーブ１の上端部とＦＲＰ緊張材２との間から
接着剤１１３を注入充填する。When using liquid adhesive layer 3, sleeves 1 and F
With the end of the RP9 tension material 2 arranged vertically and an annular lid placed between the lower end of the sleeve 1 and the FRP tension material 2, The adhesive 113 is injected and filled.
またＦＲＰ緊張材２としては、ＦＲＰ線材の撚線を使用
してもよい。ＦＲＰ線材の撚線からなるＦＲＰ緊張材を
使用した場合は、そのＦＲＰ緊張材の周囲の螺旋状溝が
接着剤層３により埋められるので、接着結合面積が増加
すると共にＦＲＰ緊張材２がスリーブ圧縮時のせん断力
に対し補強される。Further, as the FRP tension material 2, twisted wires of FRP wire may be used. When an FRP tension material made of twisted FRP wires is used, the spiral groove around the FRP tension material is filled with the adhesive layer 3, so the adhesive bonding area increases and the FRP tension material 2 is compressed into the sleeve. reinforced against the shear forces of time.
第１６図ないし第１８図は１本のＦＲＰ緊張材と金属製
定着用スリーブｌとを接着圧着により結合して構成した
定着具付きＦＲＰ緊張材をボストテンション工法により
緊張定着した状態を示すものであって、第１６図の場合
は、コンクリート構造物９にシース１０とそのシース１
０の端部に位置する金属製アンカープレート１１とが埋
設され、かつ定着具付きＦＲＰ緊張材１２がシース１０
に挿通されると共に、外周に雄ねじを有するスリーブ１
がアンカープレート１１に挿通され、さらに前記スリー
ブ１の雄ねしに螺合された定着用ナツト１３が金属製ア
ンカープレート１１に係合されている。Figures 16 to 18 show the state in which the FRP tension material with a fixing device, which is constructed by bonding one FRP tension material and a metal fixing sleeve l by adhesive pressure bonding, is tensioned and fixed using the boss tension method. In the case of FIG. 16, the concrete structure 9 has a sheath 10 and its sheath 1.
A metal anchor plate 11 located at the end of the sheath 10 is embedded, and an FRP tension material 12 with a fixing device is embedded in the sheath 10.
A sleeve 1 that is inserted into the sleeve and has a male thread on the outer periphery.
is inserted through the anchor plate 11, and a fixing nut 13 screwed onto the male thread of the sleeve 1 is engaged with the metal anchor plate 11.
第１７図および第１８図の場合は、定着具付きＦＲＰ’
ｌｉ材１２がシース１０に挿通されると共に、円筒状外
周面を有するスリーブ１が金属製アンカープレート１１
に挿通され、かつアンカープレート１１に向かって縮径
するテーパー孔を備えている定着金具１４カベスリーブ
１を囲むように配置されると共にアンカープレート１１
に係合され、さらに前記スリーブｌと定着金具１４との
間に複数の断面円弧状の１１５が圧入されている。In the case of Fig. 17 and Fig. 18, FRP' with fixing device is used.
The li material 12 is inserted into the sheath 10, and the sleeve 1 having a cylindrical outer peripheral surface is inserted into the metal anchor plate 11.
A fixing fitting 14 is inserted through the anchor plate 11 and has a tapered hole whose diameter decreases toward the anchor plate 11.
Further, a plurality of arc-shaped sections 115 are press-fitted between the sleeve l and the fixing fitting 14.
（発明の効果）
この発明は前述のように構成されているので、以下に記
載するような効果を奏する。(Effects of the Invention) Since the present invention is configured as described above, it produces the following effects.
金属製定着用スリーブｌとＦＲＰ５４張材２とを接着剤
層３により接着結合すると共に、その接着結合されたス
リーブｌとＦＲＰ緊張材２とをスリーブｌの圧縮により
圧着結合するので、スリーブｌとＦＲＰ緊張材２とを著
しく強固に結合することができ、そのため所要の引抜抵
抗力を有する定着具付きＦＲＰ緊張材を短かい金属製定
着用スリーブ１を使用して低コストで製作でき、かつ金
属製定着用スリーブ１の内面とその中に挿通されたＦＲ
Ｐ緊張材２の端部周面との間に接着剤層３を充填し、次
に前記スリーブ１を圧縮するという簡単な操作を行なう
ことにより、大きな引抜抵抗力を存する定着具付きＦＲ
ＰＭ張材を容易に製作することができる。The metal fixing sleeve 1 and the FRP 54 tension material 2 are adhesively bonded by the adhesive layer 3, and the adhesively bonded sleeve 1 and the FRP tension material 2 are crimped and bonded by compression of the sleeve 1, so that the sleeve 1 and The FRP tension material 2 can be extremely strongly bonded to the FRP tension material 2, and therefore, the FRP tension material with a fixing device having the required pull-out resistance can be manufactured at low cost using the short metal fixing sleeve 1. The inner surface of the fixing sleeve 1 and the FR inserted therein.
By performing a simple operation of filling the adhesive layer 3 between the end circumferential surface of the P tension material 2 and then compressing the sleeve 1, an FR with a fixing device that has a large pullout resistance can be produced.
PM tension material can be easily produced.
また１本の金属製定着用スリーブ１に複数本のＦＲＰ緊
張材２を挿通して接着圧着することにより、定着具付き
ＦＲＰ緊張材を各種のプレストレス導入工法に使用する
ことができ、さらに金属製定着用スリーブｌの内周面に
ねじ４を設けることにより、簡単な手段によって引抜抵
抗力を著しく向上させることができる。また圧着後のス
リーブ１の外径が圧縮前のスリーブの外径の９３〜９９
％になると共に、圧着後のスリーブ１の伸び量が１５％
以下になるようにスリーブ１を圧縮し、圧着後のスリー
ブ１のビッカース硬度を１００〜２００Ｈｖの範囲に設
定することにより、使用中にＦＲＰ緊張材２がスリーブ
１に対しずれ動くことがなく、かつ大きな引抜抵抗力を
有する定着具付きＦＲＰ緊張材を容易に製造することが
できる。In addition, by inserting a plurality of FRP tension members 2 into one metal fixing sleeve 1 and bonding them with adhesive, the FRP tension members with fixing tools can be used in various prestress introduction methods. By providing the screw 4 on the inner circumferential surface of the fixing sleeve l, the pull-out resistance can be significantly improved by a simple means. Also, the outer diameter of the sleeve 1 after crimping is 93 to 99% of the outer diameter of the sleeve before compression.
%, and the amount of elongation of sleeve 1 after crimping is 15%.
By compressing the sleeve 1 as follows and setting the Vickers hardness of the sleeve 1 after crimping in the range of 100 to 200 Hv, the FRP tension material 2 will not shift relative to the sleeve 1 during use, and It is possible to easily manufacture an FRP tendon material with a fixing device that has a large pulling resistance.
さらにまた、前記スリーブ１とＦＲＰ緊張材２の端部と
の間に間隔保持用スペーサ５を介在させることにより、
スリーブｌとＦＲＰ緊張材２との間に均等な厚さの接着
剤層３を充填して、一定品質の定着具付きＦＲＰ緊張材
を製造することができる。Furthermore, by interposing a spacer 5 for maintaining the distance between the sleeve 1 and the end of the FRP tension material 2,
By filling the adhesive layer 3 of uniform thickness between the sleeve 1 and the FRP tension material 2, it is possible to manufacture an FRP tension material with a fixed quality fixing device.
第１図ないし第３図はこの発明の第１実施例に係る定着
具付きＦＲＰ緊張材の製造順序を示すものであって、第
１図はスリーブとＦＲＰ緊張材との間に接着剤層を設け
た状態を示す縦断側面図、第２図はスリーブを圧縮して
そのスリーブとＦＲＰ緊張材とを圧着させた状態を示す
縦断側面図、第３図は第２図の一部を拡大して示す縦断
側面図である。第４図はこの発明の第２実施例に係る定
着具付きＦＲＰｌｖｊ、張材を示す縦断正面図、第５図
は１第４図のＡ−Ａ！ｉ！断面図、第６図ないし第８図
はこの発明の第３実施例ないし第５実施例に係る定着具
付きＦＲＰ緊張材を示す縦断側面図、第９図はこの発明
の第６実施例に係る定着具付きＦＲＰ緊張材を示す縦断
側面図、第１０図は第９図のＢ−Ｂ線断面図、第１１図
はこの発明の第７実施例に係る定着具付きＦＲＰ緊張材
の正面図、第１２図は第１１図のＣ−Ｃ線断面図、第１
３図はこの発明の第８実施例に係る定着具付きＦＲＰ緊
張材を示す正面図、第１４図は第１３図のＤ−Ｄ線断面
図である。
第１５図は定着用スリーブの必要長さを示す図、第１６
図は定着具付きＦＲＰ緊張材の定着構造の一例を示す縦
断側面図、第１７図は定着具付きＦＲＰ緊張材の定着構
造の他の例を示す縦断側面図、第１８図はその正面図で
ある。
図において、１は金属製定着用スリーブ、２は繊維強化
合成樹脂製プレストレストコンクリート緊張材、３は接
着剤層、４はねじ、５は間隔保持用スペーサ、６はテー
パー内面、７は雄ねじ、８は貫通孔、９はコンクリート
構造物、１０はシース、１１はアンカープレート、１２
は定着具付き緊張材、１３は定着用ナツト、１４は定着
金具、１５は喫である。
＋ｏｉ ２０ ３０ ｉ、ｏ ５０ ｓｏ
７０ ｓｏ ９０ １ｏ。
最大う１抜拘−＊ｒ＜ｔ）−1 to 3 show the manufacturing sequence of the FRP tension material with a fixing device according to the first embodiment of the present invention, and FIG. 1 shows an adhesive layer formed between the sleeve and the FRP tension material. Fig. 2 is a longitudinal side view showing the state in which the sleeve is compressed and the sleeve and the FRP tension material are crimped together, and Fig. 3 is an enlarged part of Fig. 2. FIG. FIG. 4 is a longitudinal sectional front view showing an FRPlvj with a fixing device and a tension material according to a second embodiment of the present invention, and FIG. i! Cross-sectional views, FIGS. 6 to 8 are longitudinal sectional side views showing FRP tendons with fixing devices according to third to fifth embodiments of the present invention, and FIG. 9 is a longitudinal side view showing a sixth embodiment of the present invention. FIG. 10 is a sectional view taken along the line B-B in FIG. 9, and FIG. 11 is a front view of the FRP tendon material with a fixing device according to the seventh embodiment of the present invention. Figure 12 is a sectional view taken along the line C-C in Figure 11.
FIG. 3 is a front view showing an FRP tendon with a fixing device according to an eighth embodiment of the present invention, and FIG. 14 is a sectional view taken along the line DD in FIG. 13. Figure 15 is a diagram showing the required length of the fixing sleeve, Figure 16 is a diagram showing the required length of the fixing sleeve.
The figure is a vertical side view showing an example of the fixing structure for FRP tendon material with a fixing device, FIG. 17 is a vertical side view showing another example of the fixing structure for FRP tendon material with a fixing device, and FIG. 18 is a front view thereof. be. In the figure, 1 is a metal fixing sleeve, 2 is a fiber-reinforced synthetic resin prestressed concrete tendon, 3 is an adhesive layer, 4 is a screw, 5 is a spacing spacer, 6 is a tapered inner surface, 7 is a male screw, 8 9 is a through hole, 9 is a concrete structure, 10 is a sheath, 11 is an anchor plate, 12
13 is a fixing nut, 14 is a fixing metal fitting, and 15 is a sleeve. +oi 20 30 i, o 50 so
70 so 90 1o. Maximum 1 extraction - * r < t) -
Claims (6)
された繊維強化合成樹脂製プレストレストコンクリート
緊張材２の端部の周面とが、それらの間に介在された接
着剤層３により接着結合され、前記スリーブ１が縮径す
るように圧縮されて、そのスリーブ１と接着剤層３と繊
維強化合成樹脂製プレストレストコンクリート緊張材２
とが圧着結合されている定着具付き繊維強化合成樹脂製
プレストレストコンクリート緊張材。(1) An adhesive layer 3 interposed between the inner circumferential surface of the metal fixing sleeve 1 and the circumferential surface of the end of the fiber-reinforced synthetic resin prestressed concrete tension material 2 inserted therein. The sleeve 1 is compressed to reduce its diameter, and the sleeve 1, the adhesive layer 3, and the fiber-reinforced synthetic resin prestressed concrete tendon 2 are bonded together by adhesive bonding.
Fiber-reinforced synthetic resin prestressed concrete tendons with fixing devices that are crimped and bonded.
成樹脂製プレストレストコンクリート緊張材２の端部が
挿通されている請求項１記載の定着具付き繊維強化合成
樹脂製プレストレストコンクリート緊張材。(2) The fiber-reinforced synthetic resin prestressed concrete tendon with a fixing device according to claim 1, wherein the ends of a plurality of fiber-reinforced synthetic resin prestressed concrete tendons 2 are inserted into the metal fixing sleeve 1.
られている請求項１また２記載の定着具付き繊維強化合
成樹脂製プレストレストコンクリート緊張材。(3) The prestressed concrete tendon made of fiber-reinforced synthetic resin with a fixing device according to claim 1 or 2, wherein a screw 4 is provided on the inner peripheral surface of the metal fixing sleeve 1.
された繊維強化合成樹脂製プレストレストコンクリート
緊張材２の端部の周面との間に、接着剤を充填して接着
剤層３を設け、その接着剤層３が硬化したのち、前記ス
リーブ１を縮径するように圧縮して、そのスリーブ１と
接着剤層３と繊維強化合成樹脂製プレストレストコンク
リート緊張材２とを圧着結合させる定着具付き繊維強化
合成樹脂製プレストレストコンクリート緊張材の製造方
法。(4) An adhesive is filled between the inner circumferential surface of the metal fixing sleeve 1 and the circumferential surface of the end of the fiber-reinforced synthetic resin prestressed concrete tendon 2 inserted therein to form an adhesive layer. 3 is provided, and after the adhesive layer 3 has hardened, the sleeve 1 is compressed to reduce its diameter, and the sleeve 1, the adhesive layer 3, and the fiber-reinforced synthetic resin prestressed concrete tension material 2 are bonded together. A method for manufacturing fiber-reinforced synthetic resin prestressed concrete tendons with fixing devices.
外径の９３〜９９％になると共に、圧着後のスリーブ１
の伸び量が１５％以下になるようにスリーブ１を圧縮し
、圧着後のスリーブ１のビッカース硬度を１００〜２０
０Ｈ＿ｖの範囲に設定する請求項４記載の定着具付き繊
維強化合成樹脂製プレストレストコンクリート緊張材の
製造方法。(5) The outer diameter of the sleeve 1 after crimping becomes 93 to 99% of the outer diameter of the sleeve before compression, and the sleeve 1 after crimping
The sleeve 1 is compressed so that the amount of elongation is 15% or less, and the Vickers hardness of the sleeve 1 after crimping is 100 to 20.
The method for producing a prestressed concrete tendon made of fiber-reinforced synthetic resin with a fixing device according to claim 4, wherein the tension is set in a range of 0H_v.
脂製プレストレストコンクリート緊張材２の端部との間
に間隔保持用スペーサ５を介在させる請求項５記載の定
着具付き繊維強化合成樹脂製プレストレストコンクリー
ト緊張材の製造方法。(6) A fixing device made of fiber-reinforced synthetic resin with a fixing device according to claim 5, wherein a spacer 5 for maintaining a distance is interposed between the inner surface of the metal fixing sleeve 1 and the end of the prestressed concrete tendon 2 made of fiber-reinforced synthetic resin. Method for manufacturing prestressed concrete tendons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63076010A JP2540355B2 (en) | 1988-03-31 | 1988-03-31 | Manufacturing method of fiber-reinforced synthetic resin prestressed concrete tension material with fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63076010A JP2540355B2 (en) | 1988-03-31 | 1988-03-31 | Manufacturing method of fiber-reinforced synthetic resin prestressed concrete tension material with fixing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01249304A true JPH01249304A (en) | 1989-10-04 |
| JP2540355B2 JP2540355B2 (en) | 1996-10-02 |
Family
ID=13592848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63076010A Expired - Lifetime JP2540355B2 (en) | 1988-03-31 | 1988-03-31 | Manufacturing method of fiber-reinforced synthetic resin prestressed concrete tension material with fixing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2540355B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100438113B1 (en) * | 2002-03-30 | 2004-07-02 | 조병완 | non-metallic anchorage apparatus for prestressed concrete structure and pre-stressing method using the same |
| DE102007011987A1 (en) * | 2007-03-09 | 2008-09-18 | Technische Universität Chemnitz | Tension rod system for building and hall girder, has metal casings connected with tension rod in force fit, form fit and material fit manner, where metal casings exhibit fire-retardant enclosure including internal teeth |
| CN102174812A (en) * | 2011-03-08 | 2011-09-07 | 中国科学院武汉岩土力学研究所 | Active self-adaptative constant-resistance lengthener for prestress anchor cable |
| ES2433340R1 (en) * | 2012-06-05 | 2014-02-03 | Universitat Politècnica De Catalunya | ANCHORAGE, FIXING AND PROCEDURE SYSTEM FOR POSTENSING ACTIVE ARMS OF COMPOSITE MATERIAL |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5149769U (en) * | 1974-10-09 | 1976-04-15 | ||
| JPS60203762A (en) * | 1984-03-28 | 1985-10-15 | 財団法人鉄道総合技術研究所 | Anchor structure of prestressed concrete tension material made of fiber reinforced synthetic resin |
| JPS6222216U (en) * | 1985-07-26 | 1987-02-10 |
-
1988
- 1988-03-31 JP JP63076010A patent/JP2540355B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5149769U (en) * | 1974-10-09 | 1976-04-15 | ||
| JPS60203762A (en) * | 1984-03-28 | 1985-10-15 | 財団法人鉄道総合技術研究所 | Anchor structure of prestressed concrete tension material made of fiber reinforced synthetic resin |
| JPS6222216U (en) * | 1985-07-26 | 1987-02-10 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100438113B1 (en) * | 2002-03-30 | 2004-07-02 | 조병완 | non-metallic anchorage apparatus for prestressed concrete structure and pre-stressing method using the same |
| DE102007011987A1 (en) * | 2007-03-09 | 2008-09-18 | Technische Universität Chemnitz | Tension rod system for building and hall girder, has metal casings connected with tension rod in force fit, form fit and material fit manner, where metal casings exhibit fire-retardant enclosure including internal teeth |
| CN102174812A (en) * | 2011-03-08 | 2011-09-07 | 中国科学院武汉岩土力学研究所 | Active self-adaptative constant-resistance lengthener for prestress anchor cable |
| ES2433340R1 (en) * | 2012-06-05 | 2014-02-03 | Universitat Politècnica De Catalunya | ANCHORAGE, FIXING AND PROCEDURE SYSTEM FOR POSTENSING ACTIVE ARMS OF COMPOSITE MATERIAL |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2540355B2 (en) | 1996-10-02 |
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