JPH03156061A - Structure for anchoring part for high molecular tension material - Google Patents
Structure for anchoring part for high molecular tension materialInfo
- Publication number
- JPH03156061A JPH03156061A JP29444089A JP29444089A JPH03156061A JP H03156061 A JPH03156061 A JP H03156061A JP 29444089 A JP29444089 A JP 29444089A JP 29444089 A JP29444089 A JP 29444089A JP H03156061 A JPH03156061 A JP H03156061A
- Authority
- JP
- Japan
- Prior art keywords
- polymer
- hollow part
- ratio
- tension
- high molecular
- 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 64
- 238000004873 anchoring Methods 0.000 title claims abstract description 15
- 229920000642 polymer Polymers 0.000 claims description 31
- 210000002435 tendon Anatomy 0.000 claims description 15
- 238000000034 method Methods 0.000 abstract description 7
- 238000005452 bending Methods 0.000 abstract description 2
- 239000002574 poison Substances 0.000 abstract 4
- 231100000614 poison Toxicity 0.000 abstract 4
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 description 15
- 230000001070 adhesive effect Effects 0.000 description 15
- 239000004570 mortar (masonry) Substances 0.000 description 5
- 239000000945 filler Substances 0.000 description 4
- 239000002861 polymer material Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000004567 concrete Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000011372 high-strength concrete Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
Landscapes
- Reinforcement Elements For Buildings (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明はＦＲＰ等の高分子材料からなる高分子緊張材
の端部を定着する目的で開発された高分子緊張材の定着
部構造に関するものである。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a structure for anchoring a polymer tendon developed for the purpose of fixing the ends of a polymer tendon made of a polymer material such as FRP. It is.
最近では、プレストレストコンクリート構造物の緊張材
としてＰＣ′ｗ４材の他にＦＲＰ等といった高分子材料
からなる高分子緊張材が使用されている。Recently, in addition to PC'w4 material, polymer tendons made of polymer materials such as FRP have been used as tendons for prestressed concrete structures.
又、この種の緊張材端部を定着する主な定着方法として
、クサビを使用した定着方法と無収縮モルタル等の付着
材を利用した定着方法が一般に実施されている。Further, as the main fixing methods for fixing the ends of this type of tension material, a fixing method using a wedge and a fixing method using an adhesive material such as non-shrink mortar are generally practiced.
しかし、これらの定着方法には解決すべき２゜３の問題
がある。However, these fixing methods have 2.3 problems to be solved.
すなわち、前者には緊張材の表面にクサビによって傷が
できてしまい充分な定着耐力が得られないという問題が
ある。That is, the former method has a problem in that the surface of the tendon is scratched by the wedges, making it impossible to obtain sufficient fixing strength.
又、定着部が高張ることも免れない。In addition, it is inevitable that the fixing portion will become swollen.
一方、後者には付着材として無収縮モルタルや樹脂等の
充填材を使用するが、充分な付着力を確保するには緊張
材の定着長さを相当長くする必要があ゛す、定着具が大
型化する問題がある。On the other hand, for the latter, fillers such as non-shrink mortar and resin are used as adhesive materials, but in order to ensure sufficient adhesion, the length of the tension material to be fixed must be considerably long, and the fixing device is not suitable. There is a problem with increasing the size.
この発明はこのような前記従来の問題点を解消する為に
後者の付着による定着方法を改良・発展させたもので、
高分子緊張材の端部を確実・強固に定着することができ
、しかも、定着長さを可能な限り短くすることができる
と共にコンパクトな構造とすることができる高分子緊張
材の定着部構造を提供することを目的とするものである
。This invention improves and develops the latter fixing method by adhesion in order to solve the above-mentioned conventional problems.
The anchoring part structure of the polymer tendon material can securely and firmly fix the end of the polymer tendon material, and furthermore, the fixing length can be made as short as possible and the structure can be made compact. The purpose is to provide
この発明はＦＲＰ等の高分子材料からなる高分子緊張材
の端部を定着する目的で開発された高分子緊張材の定着
部構造に関するもので、定着管の内側中空部を高分子緊
張材の荷重端方向に徐々に小径となるよな円錐形状に形
成すると共に、当該定着管の中に高分子緊張材の端部を
その荷重端側より挿入し、その回りの荷重端側にポアソ
ン比の大きい充填材を、自由端側にポアソン比の小さい
充填材をそれぞれ充填し、且つ、当該充填材と前記定着
管との境界面を摩擦が生じないよう縁切り状態にし、高
分子緊張材の端部を定着管の中に当該定着管の内面に沿
って略平行に折り曲げて挿入した構成とすることにより
前記目的を達成するものである。This invention relates to a fixing part structure for a polymer tendon developed for the purpose of fixing the end of a polymer tendon made of a polymer material such as FRP. It is formed into a conical shape that gradually becomes smaller in diameter toward the load end, and the end of the polymer tension material is inserted into the fixing tube from the load end side, and the Poisson's ratio is applied to the load end side around it. A large filler is filled with a filler having a small Poisson's ratio on the free end side, and the interface between the filler and the fixing tube is edged to prevent friction, and the end of the polymer tension material is The above object is achieved by inserting the fixing tube into the fixing tube by bending the fixing tube substantially parallel to the inner surface of the fixing tube.
〔実 施 例］ 以下、この発明を図示する一実施例によって説明する。〔Example] The present invention will be explained below with reference to an illustrated embodiment.
図中、番号１は定着管であり、当該定着管１は高強度コ
ンクリートより円筒形状に形成され、且つ、そのコンク
リート中にスパイラル筋等の補強鉄筋２を配筋すること
により充分に補強されている。In the figure, number 1 is an anchoring tube, and the anchoring tube 1 is formed into a cylindrical shape from high-strength concrete, and is sufficiently reinforced by arranging reinforcing reinforcing bars 2 such as spiral reinforcement in the concrete. There is.
又、定着管１の内側中空部３は後述する高分子緊張材５
．５の荷重端方向に徐々に小径となるような円錐形状に
形成され、当該中空部３の内側には、その全面に亘って
後述する付着材７及び８の定着管１に対する摩擦を可能
な限りなくする目的で樹脂材やグリース或いはこれらの
複合材を塗着することにより滑面４が形成されている。Further, the inner hollow part 3 of the fixing tube 1 is filled with a polymer tension material 5 which will be described later.
．． The inside of the hollow part 3 is formed into a conical shape whose diameter gradually becomes smaller in the direction of the loaded end of the hollow part 3, and the inside of the hollow part 3 is provided with adhesive materials 7 and 8, which will be described later, to reduce friction against the fixing tube 1 as much as possible over the entire surface of the hollow part 3. The smooth surface 4 is formed by applying a resin material, grease, or a composite material thereof in order to eliminate the problem.
又、定着管１の底部には後述する高分子緊張材５，５を
通す為の貫通孔６，６が必要数、穿設されている。Further, the bottom of the fixing tube 1 is provided with a required number of through holes 6, 6 for passing polymer tension materials 5, 5, which will be described later.
そして、この貫通孔６，６を通して定着管１の中空部３
に複数本の高分子緊張材５．５の端部が挿入され、その
回りに付着材７と８が充填され、これによって、高分子
緊張材５，５の端部が定着されている。The hollow part 3 of the fixing tube 1 is then passed through the through holes 6, 6.
The ends of a plurality of polymer tendons 5.5 are inserted into the holder, and the adhesive materials 7 and 8 are filled around them, thereby fixing the ends of the polymer tendons 5,5.
高分子緊張材５，５の端部は中空部３の中に中空部３の
内面に沿って平行に折り曲げて挿入されている。The ends of the polymer tendons 5, 5 are inserted into the hollow part 3 by being bent parallel to the inner surface of the hollow part 3.
付着材７には普通モルタル又は樹脂モルタル材等といっ
たポアソン比の大きいもの（ポアソン比０．３３〜０．
３５程度）が使用され、高分子緊張材５，５の荷重端側
（中空部３の底部）に一定量充填されている。The adhesive material 7 is a material with a large Poisson's ratio such as ordinary mortar or resin mortar (Poisson's ratio 0.33 to 0.
35) is used, and a certain amount is filled in the load end side (bottom of the hollow part 3) of the polymer tension materials 5, 5.
一方、付着材８には無収縮モルタル等といったポアソン
比の小さいものくポアソン比０．２０〜０．２２程度）
が使用され、高分子緊張材５．５の自由端側（付着材７
の上側）に付着材７より多量に充填されている。On the other hand, the adhesive material 8 has a small Poisson's ratio such as non-shrinkage mortar (Poisson's ratio of about 0.20 to 0.22).
is used, and the free end side of the polymer tension material 5.5 (adhesive material 7
(upper side) is filled in a larger amount than the adhesive material 7.
この様な構成に於いて、高分子緊張材５．５に引張力が
作用すると定着管１と付着材７及び８とは縁切り状態に
ある為、付着材７及び８は中空部３の内方に引きずり込
まれ、付着材７に大きな縦方向圧縮力が作用する。In such a configuration, when a tensile force is applied to the polymer tension material 5.5, the fixing tube 1 and the adhesive materials 7 and 8 are in a state of separation, so that the adhesive materials 7 and 8 are pushed inside the hollow portion 3. , and a large longitudinal compressive force acts on the adhesive material 7.
更に、付着材７には、ポアソン比の大きい材料が使用さ
れ、且つ、回りは定着管１によって完全に拘束されてい
る為、縦方向圧縮力と同時に高分子緊張材５，５を強く
締め付ける様な大きな横方向圧縮力が生じ、これによっ
て高分子緊張材５．５定着部の定着力が著しく高められ
るように成っている。Furthermore, since a material with a large Poisson's ratio is used for the adhesive material 7, and the circumference is completely constrained by the fixing tube 1, the polymer tension materials 5, 5 are strongly tightened at the same time as the longitudinal compressive force. A large lateral compressive force is generated, which significantly increases the anchoring force of the polymer tendon 5.5 anchoring section.
図に示す定着構造（７本止め定着長３５￥：′）での引
っ張り試験に於いては、定着部での滑りは生ぜず、緊張
材が破断した。これにより、本定着装置は緊張材の破断
耐力以上の定着力を有することが確認された。In a tensile test using the fixing structure shown in the figure (fixing length of 35 yen:' with 7 fixings), no slipping occurred at the fixing portion, and the tension material broke. This confirmed that the present fixing device had a fixing force greater than the breaking strength of the tension material.
この発明は以上の構成から成るので、以下の効果を有す
る。Since the present invention has the above configuration, it has the following effects.
高分子緊張材の端部をポアソン比の異なる２つの付着材
を使用することにより、極めて簡単な構造でありながら
容易に定着することができる。By using two adhesive materials having different Poisson's ratios at the ends of the polymer tension material, it is possible to easily fix the end portion of the polymer tension material, although the structure is extremely simple.
又、定着管の中空部の内面は付着材と縁切り状態にあり
、且つ定着管の内側中空部は高分子緊張材の荷重端方向
に徐々に小径となるような円錐形状に形成され、更に高
分子緊張材の端部は中空部の内面に沿って略平行に折り
曲げて挿入されている為、付着材が緊張材を締め付ける
力を最大限に発揮させることができ、したがって付着材
の付着力が著しく高められ高分子緊張材を確実・強固に
定着することができる。In addition, the inner surface of the hollow part of the fixing tube is in a state of cutting edges with the adhesive material, and the inner hollow part of the fixing tube is formed in a conical shape that gradually becomes smaller in diameter toward the loaded end of the polymer tension material. Since the end of the molecular tension material is bent and inserted approximately parallel to the inner surface of the hollow part, the adhesion material can maximize the force of tightening the tension material, thus increasing the adhesion force of the adhesion material. This has significantly improved the ability to securely and firmly fix the polymer tension material.
又、高分子緊張材の定着部を傷付ける心配が全くない為
、定着力の低下を引き起こす心配も無く、略半永久的に
一定の緊張力を維持することができる。Further, since there is no fear of damaging the anchoring portion of the polymer tension material, there is no fear of a decrease in anchoring force, and a constant tension can be maintained almost semi-permanently.
更に、構造も極めて単純である為、コンパクトな構造と
することができ、又定着管はコンクリート製である為、
錆び付くこともない。Furthermore, since the structure is extremely simple, it can be made compact, and the fixing tube is made of concrete, so
It won't rust.
第１図、第２図及び第３図は高分子緊張材の定着部を示
すもので、第１図はその縦断面図、第２図及び第３図は
第１図に於けるａ−ａ線及びｂ−ｂ線断面図である。
１・・・定着管、２・・・補強鉄筋、３・・・中空部、
４・・・滑面、５・・・高分子緊張材、６・・・貫通孔
、７．８・・・付着材。Figures 1, 2, and 3 show the fixing part of the polymer tension material. Figure 1 is a longitudinal cross-sectional view, and Figures 2 and 3 are aa FIG. 1... Fixing tube, 2... Reinforcing steel bar, 3... Hollow part,
4...Smooth surface, 5...Polymer tension material, 6...Through hole, 7.8...Adhesive material.
Claims (2)
に徐々に小径となるよな円錐形状に形成し、当該定着管
の内側中空部に高分子緊張材の端部をその荷重端側より
挿入すると共にその回りの荷重端側にポアソン比の大き
い充填材を、自由端側にポアソン比の小さい充填材をそ
れぞれ充填し、且つ、当該充填材と前記定着管との境界
面を摩擦が生じないよう縁切り状態にしてあることを特
徴とする高分子緊張材の定着部構造。(1) The inner hollow part of the fixing tube is formed into a conical shape that gradually becomes smaller in diameter toward the loaded end of the polymer tendon, and the end of the polymer tendon is placed in the inner hollow part of the fixing tube under the load. Inserted from the end side, a filling material having a large Poisson's ratio is filled around the loaded end side, and a filling material having a small Poisson's ratio is filled around the free end side, and the interface between the filling material and the fixing tube is filled. An anchoring part structure made of polymer tension material, characterized by having edge-cut edges to prevent friction.
中空部の内面に沿って略平行に折り曲げて挿入してある
ことを特徴とする請求項第１項記載の高分子緊張材の定
着部構造。(2) The polymer tension material according to claim 1, wherein the end portion of the polymer tension material is inserted into the inner hollow part of the fixing tube by being bent substantially parallel to the inner surface of the hollow part. Structure of the anchorage of the material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29444089A JPH0684655B2 (en) | 1989-11-13 | 1989-11-13 | Fixing structure of polymer tension material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29444089A JPH0684655B2 (en) | 1989-11-13 | 1989-11-13 | Fixing structure of polymer tension material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03156061A true JPH03156061A (en) | 1991-07-04 |
| JPH0684655B2 JPH0684655B2 (en) | 1994-10-26 |
Family
ID=17807801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29444089A Expired - Fee Related JPH0684655B2 (en) | 1989-11-13 | 1989-11-13 | Fixing structure of polymer tension material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0684655B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH073947A (en) * | 1993-06-16 | 1995-01-06 | Kajima Corp | Fixing method of strand made of carbon fiber reinforced plastic |
| JP2011162981A (en) * | 2010-02-08 | 2011-08-25 | Okubo Osamu | Expansion device for use in bridge, and method for manufacturing the same |
| JP2019039141A (en) * | 2017-08-22 | 2019-03-14 | 三井住友建設株式会社 | Intermediate anchoring tool of tendon |
-
1989
- 1989-11-13 JP JP29444089A patent/JPH0684655B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH073947A (en) * | 1993-06-16 | 1995-01-06 | Kajima Corp | Fixing method of strand made of carbon fiber reinforced plastic |
| JP2011162981A (en) * | 2010-02-08 | 2011-08-25 | Okubo Osamu | Expansion device for use in bridge, and method for manufacturing the same |
| JP2019039141A (en) * | 2017-08-22 | 2019-03-14 | 三井住友建設株式会社 | Intermediate anchoring tool of tendon |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0684655B2 (en) | 1994-10-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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