JP2002097746A - Frp reinforced materials with anchorage device - Google Patents

Frp reinforced materials with anchorage device

Info

Publication number
JP2002097746A
JP2002097746A JP2000287769A JP2000287769A JP2002097746A JP 2002097746 A JP2002097746 A JP 2002097746A JP 2000287769 A JP2000287769 A JP 2000287769A JP 2000287769 A JP2000287769 A JP 2000287769A JP 2002097746 A JP2002097746 A JP 2002097746A
Authority
JP
Japan
Prior art keywords
fixing
fiber
reinforced plastic
reinforcing
frp
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.)
Pending
Application number
JP2000287769A
Other languages
Japanese (ja)
Inventor
Yuzuru Hamada
譲 濱田
Takayuki Kojima
孝之 児島
Nobuaki Takagi
宣章 高木
Kazuhiro Kuzume
和宏 葛目
Akira Kobayashi
朗 小林
Original Assignee
Dps Bridge Works Co Ltd
ドーピー建設工業株式会社
Kokusai Kensetsu Gijutsu Kenkyusho:Kk
株式会社国際建設技術研究所
Nippon Steel Composite Co Ltd
日鉄コンポジット株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dps Bridge Works Co Ltd, ドーピー建設工業株式会社, Kokusai Kensetsu Gijutsu Kenkyusho:Kk, 株式会社国際建設技術研究所, Nippon Steel Composite Co Ltd, 日鉄コンポジット株式会社 filed Critical Dps Bridge Works Co Ltd
Priority to JP2000287769A priority Critical patent/JP2002097746A/en
Publication of JP2002097746A publication Critical patent/JP2002097746A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To provide such FRP reinforced materials with anchorage device that are not only light in weight, good in anti-corrosiveness, have high tensile strength and also its anchorage devices have a high drawing proof stress and yet its junction is easy, and that can promote a flexural force by fixing them to a face where tensile stress of beams and slabs made of reinforced concrete or pre-stressed concrete bridges works. SOLUTION: Each edge of fiber reinforced plastics member 2 is made into a rugged shape at its surface and which is inserted into the hole part 4 of the anchoring tool 3. Thereafter, in the gap of the holed part 4 of the anchoring tool 3, the filler materials are charged, and thereby at the both edges of the textile reinforced plastics member the anchoring tool 3 is integrally fixed.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【0001】[0001]
【発明の属する技術分野】本発明は、板状或いは棒状と
される繊維強化プラスチック部材の両端に定着具を一体
に取付けた定着具付きFRP補強材に関するものであ
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an FRP reinforcing member with a fixing device in which fixing devices are integrally attached to both ends of a fiber-reinforced plastic member having a plate shape or a rod shape.
【0002】[0002]
【従来の技術】コンクリート構造物の補強方法として、
近年、既存或いは新設の構造物の表面に連続繊維シート
を貼り付けたり、巻き付けたりする接着工法が開発され
ている。
2. Description of the Related Art As a method of reinforcing a concrete structure,
2. Description of the Related Art In recent years, an adhesive method for attaching or winding a continuous fiber sheet to the surface of an existing or new structure has been developed.
【0003】しかしながら、上記接着工法は、単純な接
着のみであり、FRP剥離による構造物の早期破壊によ
り、終局耐力の補強効果の向上に限界がある一方、コン
クリート構造物の剛性向上や内部ひび割れの抑制効果に
限界がある。その上、FRP補強材の高い性能が有効に
活用されていない。
[0003] However, the above-mentioned bonding method is only simple bonding, and there is a limit to the improvement of the effect of reinforcing the ultimate strength due to the early destruction of the structure due to FRP peeling. The suppression effect is limited. In addition, the high performance of FRP reinforcement is not being used effectively.
【0004】このような問題を改善するべく、FRPシ
ートを用いた緊張接着工法が提案されている。
In order to improve such a problem, a tension bonding method using an FRP sheet has been proposed.
【0005】図6に、橋梁補強において、FRPシート
100を使用し、緊張接着工法により補強した例を示
す。本例では、炭素繊維強化シートとされるFRPシー
ト100にプレストレス(緊張力)を導入し、橋梁上部
に接着した態様を示す。
FIG. 6 shows an example in which a bridge is reinforced using a FRP sheet 100 by a tension bonding method. In this example, a mode is shown in which prestress (tension) is introduced into the FRP sheet 100 which is a carbon fiber reinforced sheet, and the FRP sheet 100 is bonded to the upper part of the bridge.
【0006】斯かる緊張接着工法を用いた補強方法は、 (1)ひび割れの閉合効果が期待できる。 (2)中間支点上に正曲げモーメントを発生させる効果
が期待できる。 (3)原型形状をほとんど損なわずに補強できる。 といった利点を有している。
The reinforcing method using such a tension bonding method can be expected to (1) have an effect of closing cracks. (2) The effect of generating a positive bending moment on the intermediate fulcrum can be expected. (3) Reinforcement can be made without substantially impairing the original shape. It has such advantages.
【0007】[0007]
【発明が解決しようとする課題】しかしながら、上記緊
張接着工法に採用される従来のFRPシート100は、
シート状の炭素繊維強化プラスチックシートの両端を、
金属或いはプラスチックの板状定着具102に接着剤で
固定したものであり、FRPシート100に導入される
緊張力は、接着剤の強度に支配され、大きな引抜耐力を
得ることができなかった。
However, the conventional FRP sheet 100 employed in the above-described tension bonding method is
At both ends of the sheet-like carbon fiber reinforced plastic sheet,
It was fixed to a metal or plastic plate-like fixing device 102 with an adhesive, and the tension introduced into the FRP sheet 100 was governed by the strength of the adhesive, and a large pull-out strength could not be obtained.
【0008】例えば特開平5−18109号公報に記載
されるように、補強材を円筒型定着具の内部に膨張性セ
メントを充填して固定する方法も提案されているが、定
着具の厚さが厚くなるという欠点があった。
For example, as described in Japanese Patent Application Laid-Open No. 5-18109, a method has been proposed in which a reinforcing material is fixed by filling expandable cement inside a cylindrical fixing device. However, there was a drawback that the thickness became thicker.
【0009】従って、本発明の目的は、軽量で、耐食性
に優れ、高い引張強度を有し、且つ定着具の引抜耐力が
高く接合が容易な、橋梁、建築構造物の鉄筋コンクリー
ト又はプレストレストコンクリート製の梁やスラブなど
の引張応力作用面に固定することで曲げ耐力の向上を図
ることのできる定着具付きFRP補強材を提供すること
である。
Accordingly, an object of the present invention is to provide a bridge or building structure made of reinforced concrete or prestressed concrete, which is lightweight, has excellent corrosion resistance, has a high tensile strength, and has a high pull-out resistance of a fixing tool and is easily joined. An object of the present invention is to provide an FRP reinforcing member with a fixing tool, which can improve bending strength by fixing to a tensile stress acting surface such as a beam or a slab.
【0010】本発明の他の目的は、軽量で、耐食性に優
れ、高い引張強度を有し、且つ定着具の引抜耐力が高く
接合が容易であって、斜張橋の懸垂ケーブルとして使用
したり、プレストレストコンクリートの緊張材としても
利用することのできる定着具付きFRP補強材を提供す
ることである。
Another object of the present invention is to provide a suspension cable for a cable-stayed bridge, which is lightweight, has excellent corrosion resistance, has a high tensile strength, has a high pull-out resistance of a fixing device, and can be easily joined. Another object of the present invention is to provide an FRP reinforcing material with a fixing tool that can be used as a tension material for prestressed concrete.
【0011】[0011]
【課題を解決するための手段】上記目的は本発明に係る
定着具付きFRP補強材にて達成される。要約すれば、
本発明は、繊維強化プラスチック部材の両端に定着具を
一体に取付けたFRP補強材であって、前記定着具は、
前記繊維強化プラスチック部材の端部を受容する穴部を
備え、前記繊維強化プラスチック部材の各端部は、その
表面が凹凸形状とされ、前記定着具の穴部内へと挿入
し、その後、前記定着具の穴部の空隙に充填材を充填す
ることによって、前記繊維強化プラスチック部材の両端
に前記定着具を一体に取付けたことを特徴とする定着具
付きFRP補強材である。
The above object is achieved by the FRP reinforcing material with a fixing device according to the present invention. In summary,
The present invention is an FRP reinforcing material in which a fixing device is integrally attached to both ends of a fiber-reinforced plastic member, wherein the fixing device includes:
The fiber reinforced plastic member includes holes for receiving the ends, and each end of the fiber reinforced plastic member has an uneven surface, and is inserted into the hole of the fixing device, and then the fixing is performed. An FRP reinforcing member with a fixing tool, wherein the fixing tool is integrally attached to both ends of the fiber-reinforced plastic member by filling a gap in a hole of the tool with a filler.
【0012】本発明の一実施態様によると、前記繊維強
化プラスチック部材の端部表面の凹凸形状は、前記繊維
強化プラスチック部材の端部表面に接着剤を塗布し、そ
の上に粒状物を散布して接着することによって形成され
る。又、他の実施態様によると、前記繊維強化プラスチ
ック部材の端部表面の凹凸形状は、前記繊維強化プラス
チック部材の端部表面に強化繊維を巻き付け、接着剤に
て表面に接着することによって形成される。
According to one embodiment of the present invention, the irregular shape of the end surface of the fiber reinforced plastic member is obtained by applying an adhesive to the end surface of the fiber reinforced plastic member and spraying a granular material thereon. Formed by bonding. According to another embodiment, the uneven shape of the end surface of the fiber-reinforced plastic member is formed by winding a reinforcing fiber around the end surface of the fiber-reinforced plastic member and bonding the reinforcing fiber to the surface with an adhesive. You.
【0013】本発明の他の実施態様によると、前記繊維
強化プラスチック部材は、板状或いは棒状とされる。
According to another embodiment of the present invention, the fiber reinforced plastic member has a plate shape or a rod shape.
【0014】本発明の他の実施態様によると、前記定着
具は、断面が円形、楕円形或いは矩形、又はこれら形状
の組み合わせたものとされる。他の実施態様によると、
前記定着具は、金属製である。又、他の実施態様による
と、前記定着具は、取付具が一体に形成される。
According to another embodiment of the present invention, the fixing device has a circular, elliptical or rectangular cross section, or a combination thereof. According to another embodiment,
The fixing device is made of metal. According to another embodiment, the fixing device has a mounting member integrally formed.
【0015】本発明の他の実施態様によると、前記繊維
強化プラスチック部材は、強化繊維に樹脂を含浸させ硬
化させたものであり、前記強化繊維は、PAN系或いは
ピッチ系炭素繊維、ガラス繊維、又は、アラミド、ナイ
ロン、ポリエステル、PBOなどの有機繊維を一種、又
は、複数種混入して使用され、前記樹脂は、熱硬化性樹
脂である。一実施態様によると、前記熱硬化性樹脂は、
常温硬化型或は熱硬化型のエポキシ樹脂、ビニールエス
テル樹脂、MMA樹脂、不飽和ポリエステル樹脂、又は
フェノール樹脂である。
According to another embodiment of the present invention, the fiber-reinforced plastic member is obtained by impregnating a resin into a reinforcing fiber and curing the resin. The reinforcing fiber may be a PAN-based or pitch-based carbon fiber, a glass fiber, Alternatively, one kind or a mixture of plural kinds of organic fibers such as aramid, nylon, polyester, and PBO is used, and the resin is a thermosetting resin. According to one embodiment, the thermosetting resin comprises:
A room temperature or thermosetting epoxy resin, vinyl ester resin, MMA resin, unsaturated polyester resin, or phenol resin.
【0016】本発明の他の実施態様によると、前記充填
材は、接着剤或いは膨張性グラウト材である。
According to another embodiment of the present invention, the filler is an adhesive or an expandable grout.
【0017】本発明の他の実施態様によると、前記接着
剤は、エポキシ系接着剤である。
According to another embodiment of the present invention, the adhesive is an epoxy-based adhesive.
【0018】本発明の他の実施態様によると、前記膨張
性グラウト材は、水硬性の高強度グラウトであり、又、
前記粒状物は、粒径が0.1mm〜5mmの珪砂或いは
砕石である。
According to another embodiment of the present invention, the expandable grout material is a hydraulic high-strength grout;
The granular material is silica sand or crushed stone having a particle size of 0.1 mm to 5 mm.
【0019】[0019]
【発明の実施の形態】以下、本発明に係る定着具付きF
RP補強材を図面に則して更に詳しく説明する。
BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an F with a fixing device according to the present invention will be described.
The RP reinforcement will be described in more detail with reference to the drawings.
【0020】図1及び図2に、本発明に係る定着具付き
FRP補強材1の一実施例を示す。本実施例によると、
定着具付きFRP補強材1は、繊維強化プラスチック部
材2と、この繊維強化プラスチック部材2の両端に一体
に取付けた定着具3と、を有する。
FIGS. 1 and 2 show an embodiment of the FRP reinforcing member 1 with a fixing device according to the present invention. According to this embodiment,
The FRP reinforcing member 1 with a fixing device includes a fiber-reinforced plastic member 2 and a fixing device 3 integrally attached to both ends of the fiber-reinforced plastic member 2.
【0021】定着具3には、繊維強化プラスチック2の
端部を挿入し保持するための穴部4が形成される。定着
具3の断面形状は、図3(A)、(B)、(C)、
(D)、(E)に例示されるように、円形、楕円形或い
は矩形、又は、これら形状の組み合わせたものとするこ
とができる。定着具1の断面形状は、これに限定される
ものではなく、その他種々の形状とし得る。
The fixing device 3 has a hole 4 for inserting and holding an end of the fiber reinforced plastic 2. 3A, 3B, 3C, and 3C.
As illustrated in (D) and (E), the shape may be a circle, an ellipse, a rectangle, or a combination of these shapes. The cross-sectional shape of the fixing device 1 is not limited to this, and may be various other shapes.
【0022】又、本実施例では、定着具1の外側端部に
は外方へと突出して、ボルト穴5を備えた取付具6が一
体に形成されている。定着具付きFRP補強材1は、こ
の取付具6を利用して、繊維強化プラスチック部材2に
緊張力が導入されたり、或いは、取付具6のボルト穴5
を利用してアンカーボルト(図示せず)にて定着具付き
FRP補強材1を補強個所に固定することができる。取
付具6は、定着具1の任意の位置に設けることができ、
例えば、図4に示すように、定着具3の両側に付設する
ことも可能である。
In this embodiment, a fixing device 6 having a bolt hole 5 is integrally formed at an outer end portion of the fixing device 1 so as to protrude outward. The FRP reinforcing material 1 with the fixing device is configured such that tension is introduced into the fiber-reinforced plastic member 2 by using the mounting device 6 or the bolt holes 5 of the mounting device 6 are used.
The FRP reinforcing member 1 with the fixing tool can be fixed to the reinforcing portion by using an anchor bolt (not shown). The attachment 6 can be provided at any position of the fixing tool 1,
For example, as shown in FIG. 4, it is also possible to attach them on both sides of the fixing device 3.
【0023】定着具3及び取付具6は、例えば、スチー
ル(鋼材)のような金属にて作製するのが好ましいが、
その他の金属とすることもでき、更には、必要に応じ
て、例えばプラスチック或は繊維強化プラスチックなど
のような金属以外の材料にて作製することも可能であ
る。
The fixing device 3 and the mounting device 6 are preferably made of a metal such as steel (steel material).
It can be made of other metals, and if necessary, it can be made of a material other than metal such as plastic or fiber reinforced plastic.
【0024】繊維強化プラスチック部材2は、図3
(A)〜(D)に示すように、強化繊維2aに樹脂2b
を含浸させ硬化させたものであり、板状(シート状、テ
ープ状或いは紐状を含む。)、又は、棒状とすることが
できる。又、強化繊維2aは、繊維強化プラスチック部
材2の長手方向、即ち、緊張力導入方向に沿って一方向
に配列された一方向配列強化繊維とすることができ、場
合によっては、編織されたクロスを使用することもでき
る。本実施例では、一方向に配列された強化繊維を使用
し、断面が矩形とされる幅50mm、厚さ2mm、長さ
2mのシート状とされた。
The fiber reinforced plastic member 2 is shown in FIG.
As shown in (A) to (D), the resin 2b is added to the reinforcing fiber 2a.
And hardened, and may be in the form of a plate (including a sheet, a tape, or a string) or a rod. Further, the reinforcing fibers 2a can be unidirectionally arrayed reinforcing fibers arranged in one direction along the longitudinal direction of the fiber-reinforced plastic member 2, that is, along the tension introduction direction. Can also be used. In the present embodiment, the reinforcing fibers arranged in one direction were used, and the sheet was formed into a rectangular sheet having a width of 50 mm, a thickness of 2 mm, and a length of 2 m.
【0025】繊維強化プラスチック部材2の強化繊維2
aは、PAN系或いはピッチ系炭素繊維、ガラス繊維、
又は、アラミド、ナイロン、ポリエステル、PBOなど
の有機繊維を一種、又は、複数種混入して使用すること
ができる。強化繊維2aに含浸される樹脂2bは、熱硬
化性樹脂とされ、熱硬化性樹脂としては、常温硬化型或
は熱硬化型のエポキシ樹脂、ビニールエステル樹脂、M
MA樹脂、不飽和ポリエステル樹脂、又はフェノール樹
脂とされる。
The reinforcing fibers 2 of the fiber-reinforced plastic member 2
a is a PAN-based or pitch-based carbon fiber, glass fiber,
Alternatively, organic fibers such as aramid, nylon, polyester, and PBO may be used alone or in combination of two or more. The resin 2b impregnated in the reinforcing fibers 2a is a thermosetting resin. As the thermosetting resin, a room temperature or thermosetting epoxy resin, vinyl ester resin, M
MA resin, unsaturated polyester resin, or phenol resin.
【0026】繊維強化プラスチック部材2における樹脂
含浸量、即ち、次式で定義される繊維割合Vfは、10
〜99.9%、好ましくは、40〜70%、通常60%
程度とされる。 繊維割合Vf(%)=(繊維の全体積)/(樹脂の全体
積+繊維の全体積) 上述のようにして作製された繊維強化プラスチック部材
2の端部は、その表面が凹凸形状とされる。このような
凹凸形状表面は、例えば図1に示すように、繊維強化プ
ラスチック部材2の端部表面に接着剤10を塗布し、そ
の上に粒状物11を散布することによって形成し得る。
これにより、繊維強化プラスチック部材端部の摩擦係数
を高めることができる。
The resin impregnation amount in the fiber reinforced plastic member 2, that is, the fiber ratio Vf defined by the following equation is 10
9999.9%, preferably 40-70%, usually 60%
Degree. Fiber ratio Vf (%) = (total volume of fiber) / (total volume of resin + total volume of fiber) The end of the fiber reinforced plastic member 2 produced as described above has an uneven surface. You. Such an uneven surface can be formed, for example, by applying an adhesive 10 to the end surface of the fiber-reinforced plastic member 2 and spraying the granular material 11 thereon, as shown in FIG.
Thereby, the coefficient of friction at the end of the fiber reinforced plastic member can be increased.
【0027】接着剤10としては、例えば、エポキシ系
接着剤などの任意のものを使用し得るが、繊維強化プラ
スチック2に使用した樹脂2bと相溶性の良いものを使
用するのが好ましい。
As the adhesive 10, for example, any adhesive such as an epoxy adhesive can be used, but it is preferable to use an adhesive having good compatibility with the resin 2b used for the fiber reinforced plastic 2.
【0028】粒状物11としては、粒径が0.1mm〜
5mmとされる珪砂或いは砕石が好ましい。
The particle 11 has a particle size of 0.1 mm to
Quartz sand or crushed stone of 5 mm is preferred.
【0029】繊維強化プラスチック部材2の端部表面の
凹凸形状は、例えば、図5に示すように、繊維強化プラ
スチック部材2の端部表面に、紐状の繊維強化プラスチ
ック11を巻き付け、例えば紐状繊維強化プラスチック
11或は繊維強化プラスチック部材2の端部表面に塗布
した接着剤10にて繊維強化プラスチック部材1の端部
表面に接着することによっても形成し得る。
As shown in FIG. 5, for example, as shown in FIG. 5, a string-shaped fiber reinforced plastic 11 is wound around the end surface of the fiber reinforced plastic member 2, and It can also be formed by adhering to the end surface of the fiber reinforced plastic member 1 with the adhesive 10 applied to the end surface of the fiber reinforced plastic 11 or the fiber reinforced plastic member 2.
【0030】繊維強化プラスチック部材2の端部に珪砂
のような粒状物或は紐状繊維強化プラスチック11が固
着されたあと、繊維強化プラスチック部材2の端部を定
着具3の穴部4内へと挿入し、穴部4の空隙に充填材1
2が充填される。充填材12としては、接着剤或いは膨
張性グラウト材を好適に使用し得る。接着剤は、繊維強
化プラスチック部材2の端部に珪砂11を接着するのに
使用したと同じ接着剤を使用し得るが、他の接着剤であ
っても良い。
After the granular material such as silica sand or the string-like fiber reinforced plastic 11 is fixed to the end of the fiber reinforced plastic member 2, the end of the fiber reinforced plastic member 2 is inserted into the hole 4 of the fixing device 3. And insert the filler 1 into the space of the hole 4.
2 are filled. As the filler 12, an adhesive or an expandable grout material can be suitably used. The same adhesive as that used for bonding the silica sand 11 to the end of the fiber-reinforced plastic member 2 may be used, but another adhesive may be used.
【0031】膨張性グラウト材12としては、速硬性の
比較的強度の高い一般的なモルタルなどを使用し得る
が、速硬性且つ膨張性を有する水硬性の高強度グラウト
材が好ましい。高強度グラウト材12は、膨張硬化によ
り、定着具の穴部内面及び繊維強化プラスチックの周面
を高い内圧を持って均一に圧縮した状態で高強度で固結
されている。
As the expandable grout material 12, a quick-setting and relatively high-strength general mortar may be used, but a fast-setting and expandable hydraulic high-strength grout material is preferable. The high-strength grout material 12 is solidified with high strength by expansion and hardening while uniformly compressing the inner surface of the hole of the fixing device and the peripheral surface of the fiber-reinforced plastic with a high internal pressure.
【0032】グラウト材としては、ポルトランドセメン
ト、カルシウムアルミネート、石膏、膨張性セメント混
和剤、凝結遅延剤、及び高性能減水剤とからなるセメン
トペースト、又は、このペーストに微粒砂を加えたモル
タルなどが用いられる。
Examples of the grout material include a cement paste comprising portland cement, calcium aluminate, gypsum, an expandable cement admixture, a setting retarder, and a high-performance water reducing agent, or a mortar obtained by adding fine sand to this paste. Is used.
【0033】従って、繊維強化プラスチック部材2の両
端部はそれぞれ、凹凸表面を介して、充填材12、例え
ば、定着具の穴部内に内圧を生じさせた圧縮状態の高強
度固結グラウトと完全に一体化され、これによって、定
着具付きのFRP補強材1が作製される。
Therefore, both ends of the fiber reinforced plastic member 2 are completely connected to the filler 12, for example, a high-strength compacted grout in a compressed state in which an internal pressure is generated in the hole of the fixing device, via the uneven surface. The FRP reinforcing member 1 with the fixing tool is thus manufactured.
【0034】本発明のFRP補強材1は、定着具3と繊
維強化プラスチック部材2との間には、FRP補強材2
への緊張力導入のために付加される引張力に十分対抗で
きる固定力を得ることができる。したがって、定着具3
の形状の如何に拘わらず、高い定着強度が得られる。
The FRP reinforcing material 1 according to the present invention is provided between the fixing device 3 and the fiber-reinforced plastic member 2.
Thus, it is possible to obtain a fixing force that can sufficiently oppose the tensile force applied for introducing the tension into the wire. Therefore, the fixing device 3
High fixing strength can be obtained irrespective of the shape.
【0035】このような構成の本発明の定着具付きFR
P補強材1は、軽量で耐食性に優れ、高い引張強度を有
し、且つ定着具の引抜耐力が高く接合が容易なため、高
耐力の補強材、或いは、緊張材としても利用可能であ
る。例えば、橋梁や建築構造物の鉄筋コンクリート又は
プレストレストコンクリート性の梁やスラブなどの部材
の引張応力作用面にこの補強材を固定することで曲げ耐
力の向上が図れる。斜張橋の懸垂ケーブルとして利用す
ることもでき、又、プレストレストコンクリートの緊張
材としても利用可能である。
The FR with the fixing device of the present invention having such a structure
The P reinforcing material 1 is lightweight, has excellent corrosion resistance, has high tensile strength, and has high pull-out strength of the fixing device and is easy to join. Therefore, it can be used as a high-strength reinforcing material or a tension material. For example, the bending strength can be improved by fixing the reinforcing material to a tensile stress acting surface of a member such as a reinforced concrete or prestressed concrete beam or slab of a bridge or a building structure. It can be used as a suspension cable for a cable-stayed bridge, or as a tendon for prestressed concrete.
【0036】次ぎに、本発明に係る定着具付きFRP補
強材を実施例に付いて更に詳しく説明する。
Next, the FRP reinforcing material with a fixing device according to the present invention will be described in more detail with reference to examples.
【0037】本実施例にて、繊維強化プラスチック部材
2は、炭素繊維2aを一方向に配列し、エポキシ樹脂2
bを含浸して硬化した炭素繊維強化プラスチックであっ
た。このときの樹脂含浸量は、40%であった。
In the present embodiment, the fiber-reinforced plastic member 2 has carbon fibers 2a arranged in one direction,
This was a carbon fiber reinforced plastic impregnated with b and cured. The resin impregnation amount at this time was 40%.
【0038】使用した炭素繊維の性状は次の通りであっ
た。 ・炭素繊維の性状: ヤング係数 230GPa 引張強度 4900MPa このようにして作製した炭素繊維強化プラスチック部材
2の両端に、接着剤10を塗布し、その上に珪砂11を
散布した。接着剤10は、エポキシ系接着剤(日鉄コン
ポジット株式会社製:商品名FR−E3P)であり、珪
砂11の粒径は1mm〜5mmであった。珪砂11は、
5kg/m2にて散布した。
The properties of the carbon fibers used were as follows. -Properties of carbon fiber: Young's modulus 230 GPa Tensile strength 4900 MPa An adhesive 10 was applied to both ends of the carbon fiber reinforced plastic member 2 thus produced, and silica sand 11 was sprayed thereon. The adhesive 10 was an epoxy adhesive (trade name: FR-E3P, manufactured by Nippon Steel Composite Co., Ltd.), and the particle size of the silica sand 11 was 1 mm to 5 mm. Silica sand 11
Sprayed at 5 kg / m 2 .
【0039】繊維強化プラスチック部材2の端部に珪砂
11が固着されたあと、繊維強化プラスチック部材2の
端部を内径55mmの鋼製円筒型定着具3の穴部4内へ
と挿入した。その後、穴部4の空隙には、グラウト材と
して膨張性モルタル12を使用して充填し、繊維強化プ
ラスチック部材端部を定着具3に固定した。膨張性モル
タル12の性状は次ぎの通りであった。 ・膨張性モルタルの性状: 規格膨張圧 30N/mm2 真比重 3.20 このようにして作製した固定具付きFRP補強材1の両
端を引張試験機に固定して引張試験を行った。引張力2
50kNで炭素繊維強化プラスチック部材2が破断し、
定着具3から炭素繊維強化プラスチック部材2が抜け出
ることはなかった。
After the silica sand 11 was fixed to the end of the fiber reinforced plastic member 2, the end of the fiber reinforced plastic member 2 was inserted into the hole 4 of the steel cylindrical fixing device 3 having an inner diameter of 55 mm. Thereafter, the voids in the holes 4 were filled with an inflatable mortar 12 as a grout material, and the ends of the fiber-reinforced plastic member were fixed to the fixing device 3. The properties of the expandable mortar 12 were as follows. And properties of the intumescent Mortar: was subjected to a tensile fixed to standard inflation pressure 30 N / mm 2 true specific gravity 3.20 In this manner the fixture with FRP both ends of the reinforcing member 1 tensile tester manufactured tested. Tensile force 2
At 50 kN, the carbon fiber reinforced plastic member 2 breaks,
The carbon fiber reinforced plastic member 2 did not fall out of the fixing device 3.
【0040】定着具3の断面形状を楕円形、矩形に変え
て、上記と同様の構成のFRP補強材1を作製し、同じ
試験を試みたが、引張力250kNで炭素繊維強化プラ
スチック部材2が破断し、定着具3から炭素繊維強化プ
ラスチック部材2の端部が抜け出ることはなかった。
An FRP reinforcing member 1 having the same structure as described above was manufactured by changing the cross-sectional shape of the fixing device 3 into an elliptical shape and a rectangular shape, and the same test was performed. It was broken and the end of the carbon fiber reinforced plastic member 2 did not fall out of the fixing device 3.
【0041】比較例として、繊維強化プラスチック部材
2の端部に接着剤10及び珪砂11の散布を行わずに繊
維強化プラスチック部材の端部を内径55mmの鋼製円
筒型定着具3の穴部4内へと挿入し、穴部4の空隙に膨
張性モルタル12を充填して固定した。
As a comparative example, the end of the fiber-reinforced plastic member 2 was not sprayed with the adhesive 10 and the silica sand 11 and the end of the fiber-reinforced plastic member was cut into the hole 4 of the steel cylindrical fixing device 3 having an inner diameter of 55 mm. Then, the mortar 12 was filled in the space of the hole 4 and fixed.
【0042】このようにして作製した比較例としての固
定具付きFRP補強材の両端を引張試験機に固定して引
張試験を行った。引張力250kNで炭素繊維強化プラ
スチック部材2が定着具3から抜け出てしまった。
A tensile test was performed by fixing both ends of the FRP reinforcing material with a fixture as a comparative example manufactured as described above to a tensile tester. With a tensile force of 250 kN, the carbon fiber reinforced plastic member 2 came out of the fixing device 3.
【0043】[0043]
【発明の効果】以上説明したように、本発明に係る定着
具付きFRP補強材は、繊維強化プラスチック部材の両
端に定着具を一体に取付けたFRP補強材であって、定
着具は、繊維強化プラスチック部材の端部を受容する穴
部を備え、繊維強化プラスチック部材の各端部は、その
表面が凹凸形状とされ、定着具の穴部内へと挿入し、そ
の後、定着具の穴部の空隙に充填材を充填することによ
って、繊維強化プラスチック部材の両端に定着具を一体
に取付けた構成とされるので、 (1)軽量で、耐食性に優れ、高い引張強度を有し、且
つ定着具の引抜耐力が高く接合が容易な、橋梁、建築構
造物の鉄筋コンクリート又はプレストレストコンクリー
ト性の梁やスラブなどの引張応力作用面に固定すること
で曲げ耐力の向上を図ることができる。 (2)軽量で、耐食性に優れ、高い引張強度を有し、且
つ定着具の引抜耐力が高く接合が容易であって、斜張橋
の懸垂ケーブルとして使用したり、プレストレストコン
クリートの緊張材としても利用することができる。
As described above, the FRP reinforcing material with a fixing device according to the present invention is an FRP reinforcing material in which a fixing device is integrally attached to both ends of a fiber-reinforced plastic member. A hole for receiving an end of the plastic member is provided. Each end of the fiber-reinforced plastic member has an uneven surface, and is inserted into the hole of the fixing device. Since the fixing device is integrally attached to both ends of the fiber reinforced plastic member by filling the material with the filler, (1) it is lightweight, has excellent corrosion resistance, has high tensile strength, and has a high tensile strength. Bending strength can be improved by fixing to a tensile stress acting surface such as a reinforced concrete or prestressed concrete beam or slab of a bridge or a building structure having a high pull-out strength and easy joining. (2) It is lightweight, has excellent corrosion resistance, has high tensile strength, and has a high pull-out strength of the fixing device, and is easy to join. Can be used.
【図面の簡単な説明】[Brief description of the drawings]
【図1】本発明に係る定着具付きFRP補強材の断面側
面図である。
FIG. 1 is a sectional side view of an FRP reinforcing member with a fixing tool according to the present invention.
【図2】本発明に係る定着具付きFRP補強材の断面平
面図である。
FIG. 2 is a sectional plan view of an FRP reinforcing member with a fixing device according to the present invention.
【図3】図2の線A−Aにとった断面図であり、定着具
の実施例を示す。
FIG. 3 is a cross-sectional view taken along line AA of FIG. 2, showing an embodiment of the fixing device.
【図4】本発明に係る定着具付きFRP補強材の他の実
施例を示す平面図である。
FIG. 4 is a plan view showing another embodiment of the FRP reinforcing material with a fixing tool according to the present invention.
【図5】本発明に係る定着具付きFRP補強材における
繊維強化プラスチック部材の端部表面凹凸形状の他の実
施例を示す斜視図である。
FIG. 5 is a perspective view showing another embodiment of the end surface unevenness of the fiber reinforced plastic member in the FRP reinforcing material with a fixing device according to the present invention.
【図6】FRPシートを使用した橋梁上部の緊張接着工
法を説明する図である。
FIG. 6 is a diagram illustrating a tension bonding method for an upper part of a bridge using an FRP sheet.
【符号の説明】[Explanation of symbols]
1 定着具付きFRP補強材 2 繊維強化プラスチック部材 3 定着具 10 接着剤 11 凹凸表面(粒状物、繊維強化プ
ラスチック) 12 充填材
REFERENCE SIGNS LIST 1 FRP reinforcing material with fixing device 2 Fiber reinforced plastic member 3 Fixing device 10 Adhesive 11 Uneven surface (granular material, fiber reinforced plastic) 12 Filler
───────────────────────────────────────────────────── フロントページの続き (72)発明者 濱田 譲 東京都豊島区北大塚1―16−6 ドーピー 建設工業株式会社内 (72)発明者 児島 孝之 兵庫県西宮市苦楽園3番地16−10 (72)発明者 高木 宣章 滋賀県草津市野路町943 サンコート南草 津907 (72)発明者 葛目 和宏 大阪府大阪市西区西本町1−7−7 株式 会社国際建設技術研究所内 (72)発明者 小林 朗 東京都中央区日本橋小舟町3−8 日鉄コ ンポジット株式会社内 Fターム(参考) 2D059 AA14 GG01 GG02 GG40 GG55 2E164 AA05 BA06 BA12  ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Joe Hamada 1-16-6 Kita-Otsuka, Toshima-ku, Tokyo DOPI Construction Industry Co., Ltd. (72) Inventor Takayuki Kojima 3-10 Kurakuen, Nishinomiya City, Hyogo Prefecture ( 72) Inventor Noriaki Takagi 943, Noji-cho, Kusatsu-shi, Shiga 907 Suncourt Minami-Kusatsu 907 (72) Inventor Kazuhiro Kuzume 1-7-7, Nishihonmachi, Nishi-ku, Osaka-shi, Osaka Inside the International Construction Technology Research Institute (72) Inventor Akira Kobayashi F-term (reference) 2D059 AA14 GG01 GG02 GG40 GG55 2E164 AA05 BA06 BA12

Claims (13)

    【特許請求の範囲】[Claims]
  1. 【請求項1】 繊維強化プラスチック部材の両端に定着
    具を一体に取付けたFRP補強材であって、 前記定着具は、前記繊維強化プラスチック部材の端部を
    受容する穴部を備え、 前記繊維強化プラスチック部材の各端部は、その表面が
    凹凸形状とされ、前記定着具の穴部内へと挿入し、その
    後、前記定着具の穴部の空隙に充填材を充填することに
    よって、前記繊維強化プラスチック部材の両端に前記定
    着具を一体に取付けたことを特徴とする定着具付きFR
    P補強材。
    1. An FRP reinforcing material having a fixing device integrally attached to both ends of a fiber-reinforced plastic member, wherein the fixing device has a hole for receiving an end of the fiber-reinforced plastic member, Each end of the plastic member has an uneven surface, and is inserted into the hole of the fixing device, and thereafter, a filler is filled in a void of the hole of the fixing device, thereby forming the fiber-reinforced plastic. FR with fixing device, wherein the fixing device is integrally attached to both ends of a member
    P reinforcement.
  2. 【請求項2】 前記繊維強化プラスチック部材の端部表
    面の凹凸形状は、前記繊維強化プラスチック部材の端部
    表面に接着剤を塗布し、その上に粒状物を散布して接着
    することによって形成されることを特徴とする請求項1
    の定着具付きFRP補強材。
    2. The uneven shape of the end surface of the fiber reinforced plastic member is formed by applying an adhesive to the end surface of the fiber reinforced plastic member and spraying and adhering a granular material thereon. 2. The method according to claim 1, wherein
    FRP reinforcement with fixing device.
  3. 【請求項3】 前記繊維強化プラスチック部材の端部表
    面の凹凸形状は、前記繊維強化プラスチック部材の端部
    表面に強化繊維を巻き付け、接着剤にて表面に接着する
    ことによって形成されることを特徴とする請求項1の定
    着具付きFRP補強材。
    3. The uneven shape of the end surface of the fiber reinforced plastic member is formed by winding a reinforcing fiber around the end surface of the fiber reinforced plastic member and bonding the reinforcing fiber to the surface with an adhesive. The FRP reinforcing material with a fixing tool according to claim 1.
  4. 【請求項4】 前記繊維強化プラスチック部材は、板状
    或いは棒状とされることを特徴とする請求項1、2又は
    3の定着具付きFRP補強材。
    4. The FRP reinforcing member with a fixing device according to claim 1, wherein the fiber reinforced plastic member is formed in a plate shape or a rod shape.
  5. 【請求項5】 前記定着具は、断面が円形、楕円形或い
    は矩形、又は、これら形状の組み合わせたものとされる
    ことを特徴とする請求項1〜4のいずれかの項に記載の
    定着具付きFRP補強材。
    5. The fixing device according to claim 1, wherein the fixing device has a circular, elliptical, or rectangular cross section, or a combination of these shapes. With FRP reinforcement.
  6. 【請求項6】 前記定着具は、金属、プラスチック或は
    繊維強化プラスチックにて作製されることを特徴とする
    請求項1〜5のいずれかの項に記載の定着具付きFRP
    補強材。
    6. The FRP with a fixing device according to claim 1, wherein the fixing device is made of metal, plastic, or fiber-reinforced plastic.
    Reinforcement.
  7. 【請求項7】 前記定着具は、取付具が一体に形成され
    ていることを特徴とする請求項1〜6のいずれかの項に
    記載の定着具付きFRP補強材。
    7. The FRP reinforcing material with a fixing device according to claim 1, wherein the fixing device is formed integrally with a mounting device.
  8. 【請求項8】 前記繊維強化プラスチック部材は、強化
    繊維に樹脂を含浸して硬化したものであり、前記強化繊
    維は、PAN系或いはピッチ系炭素繊維、ガラス繊維、
    又は、アラミド、ナイロン、ポリエステル、PBOなど
    の有機繊維を一種、又は、複数種混入して使用され、前
    記樹脂は、熱硬化性樹脂であることを特徴とする請求項
    1〜7のいずれかの項に記載の定着具付きFRP補強
    材。
    8. The fiber-reinforced plastic member is obtained by impregnating a reinforcing fiber with a resin and curing the resin, wherein the reinforcing fiber is a PAN-based or pitch-based carbon fiber, a glass fiber,
    Or, one kind of organic fiber such as aramid, nylon, polyester, PBO, or a mixture of plural kinds is used, and the resin is a thermosetting resin. The FRP reinforcing material with a fixing device according to item 6.
  9. 【請求項9】 前記熱硬化性樹脂は、常温硬化型或は熱
    硬化型のエポキシ樹脂、ビニールエステル樹脂、MMA
    樹脂、不飽和ポリエステル樹脂、又はフェノール樹脂で
    あることを特徴とする請求項8の定着具付きFRP補強
    材。
    9. The thermosetting resin may be a room temperature curing type or a thermosetting type epoxy resin, a vinyl ester resin, MMA.
    The FRP reinforcing material with a fixing device according to claim 8, wherein the FRP reinforcing material is a resin, an unsaturated polyester resin, or a phenol resin.
  10. 【請求項10】 前記充填材は、接着剤或いは膨張性グ
    ラウト材であることを特徴とする請求項1〜9のいずれ
    かの項に記載の定着具付きFRP補強材。
    10. The FRP reinforcing material with a fixing tool according to claim 1, wherein the filler is an adhesive or an expandable grout material.
  11. 【請求項11】 前記接着剤は、エポキシ系接着剤であ
    ることを特徴とする請求項10の定着具付きFRP補強
    材。
    11. The FRP reinforcing material with a fixing device according to claim 10, wherein the adhesive is an epoxy adhesive.
  12. 【請求項12】 前記膨張性グラウト材は、水硬性の高
    強度グラウトであることを特徴とする請求項10の定着
    具付きFRP補強材。
    12. The FRP reinforcing material with a fixing device according to claim 10, wherein the expandable grout material is hydraulic high strength grout.
  13. 【請求項13】 前記粒状物は、粒径が0.1mm〜5
    mmの珪砂或いは砕石であることを特徴とする請求項1
    〜10のいずれかの項に記載の定着具付きFRP補強
    材。
    13. The granular material has a particle size of 0.1 mm to 5 mm.
    2. The material is silica sand or crushed stone having a thickness of 1 mm.
    The FRP reinforcing material with a fixing device according to any one of Items 10 to 10.
JP2000287769A 2000-09-21 2000-09-21 Frp reinforced materials with anchorage device Pending JP2002097746A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003328561A (en) * 2002-05-14 2003-11-19 Dps Bridge Works Co Ltd Reinforcing method for concrete member and tensioning device for tendon used therein
CN100359118C (en) * 2004-10-13 2008-01-02 吴智深 Method of applying FRP rope reinforced member and its special equipment
JP2008095348A (en) * 2006-10-11 2008-04-24 Maeda Corp Method and material for reinforcing deteriorated reinforcement
CZ302103B6 (en) * 2008-08-07 2010-10-13 Vysoké ucení technické v Brne Non-metallic building reinforcement intended particularly for prestressed building structures and process for treating thereof
KR101250643B1 (en) * 2010-12-29 2013-04-03 현대중공업 주식회사 Connection Structure of Propeller boss and Blade for Propeller Comprised of Composite Materials
US20130309435A1 (en) * 2012-05-15 2013-11-21 Hexcel Corporation Over-molding of load-bearing composite structures
CZ305071B6 (en) * 2013-07-12 2015-04-22 Vysoké Učení Technické V Brně Fakulta Stavební Device for making adaptations of reinforcement of composite materials
CN104805841A (en) * 2015-02-28 2015-07-29 河海大学 FRP rib anchor rod anchoring head capable of applying prestress
CN107386123A (en) * 2017-08-14 2017-11-24 中铁六局集团有限公司 A kind of box beam reserves anchor cable hole construction method

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JPS6157745A (en) * 1984-08-27 1986-03-24 Senkichi Nakakoshi Metal long article or plate body for reinforcing hydraulic cement or plaster
JPH0447292Y2 (en) * 1984-11-26 1992-11-09
JPS61216962A (en) * 1985-03-20 1986-09-26 Penta Ocean Construction Tightening and anchoring mechanism of tightening material for prestressed concrete
JPS62132010A (en) * 1985-12-03 1987-06-15 Toshiba Corp Manufacture of support material
JPS6311747A (en) * 1986-06-30 1988-01-19 Mitsui Constr Structural material and its production
JPS63102818U (en) * 1986-12-24 1988-07-04
JPS63272850A (en) * 1987-05-01 1988-11-10 Mitsui Constr Fixing tool for tensile material
JPH01154946A (en) * 1987-12-11 1989-06-16 Kumagai Gumi Co Ltd Structure for joint of anchor sleeve to fiber reinforced synthetic resin pc fastener
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JPH01174533A (en) * 1987-12-28 1989-07-11 Mitsui Constr Co Ltd Production of reinforcer for structural material
JPH03202539A (en) * 1989-12-14 1991-09-04 Kumagai Gumi Co Ltd Fixing structure of fiber-reinforced synthetic resin concrete rod
JPH0730717Y2 (en) * 1990-03-16 1995-07-12 東京製綱株式会社 Terminal structure of fiber composite strip
JPH0518109A (en) * 1991-01-22 1993-01-26 Kumagai Gumi Co Ltd Fixing structure for frp tensile material
JPH04285247A (en) * 1991-03-15 1992-10-09 Shimizu Corp Member for introducing prestress and method of introducing prestress
JPH05118100A (en) * 1991-10-25 1993-05-14 Shimizu Corp Anchoring member for fiber reinforced plastics tension member
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JPH05287843A (en) * 1992-04-06 1993-11-02 Nippon Steel Corp Fixing device for carbon fiber reinforced plastic member
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JP2000038805A (en) * 1998-07-22 2000-02-08 Toray Ind Inc Anchorage of frp reinforcement
JP2000248690A (en) * 1999-03-01 2000-09-12 Freyssinet Internatl Stup Method and equipment for reinforcing concrete structure
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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003328561A (en) * 2002-05-14 2003-11-19 Dps Bridge Works Co Ltd Reinforcing method for concrete member and tensioning device for tendon used therein
CN100359118C (en) * 2004-10-13 2008-01-02 吴智深 Method of applying FRP rope reinforced member and its special equipment
JP2008095348A (en) * 2006-10-11 2008-04-24 Maeda Corp Method and material for reinforcing deteriorated reinforcement
CZ302103B6 (en) * 2008-08-07 2010-10-13 Vysoké ucení technické v Brne Non-metallic building reinforcement intended particularly for prestressed building structures and process for treating thereof
KR101250643B1 (en) * 2010-12-29 2013-04-03 현대중공업 주식회사 Connection Structure of Propeller boss and Blade for Propeller Comprised of Composite Materials
US20130309435A1 (en) * 2012-05-15 2013-11-21 Hexcel Corporation Over-molding of load-bearing composite structures
US9393745B2 (en) * 2012-05-15 2016-07-19 Hexcel Corporation Over-molding of load-bearing composite structures
CZ305071B6 (en) * 2013-07-12 2015-04-22 Vysoké Učení Technické V Brně Fakulta Stavební Device for making adaptations of reinforcement of composite materials
CN104805841A (en) * 2015-02-28 2015-07-29 河海大学 FRP rib anchor rod anchoring head capable of applying prestress
CN104805841B (en) * 2015-02-28 2016-11-30 河海大学 A kind of prestressed FRP rebar anchor pole anchor head
CN107386123A (en) * 2017-08-14 2017-11-24 中铁六局集团有限公司 A kind of box beam reserves anchor cable hole construction method

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