JP2819333B2 - How to reinforce structures - Google Patents
How to reinforce structuresInfo
- Publication number
- JP2819333B2 JP2819333B2 JP2019928A JP1992890A JP2819333B2 JP 2819333 B2 JP2819333 B2 JP 2819333B2 JP 2019928 A JP2019928 A JP 2019928A JP 1992890 A JP1992890 A JP 1992890A JP 2819333 B2 JP2819333 B2 JP 2819333B2
- Authority
- JP
- Japan
- Prior art keywords
- reinforcing
- sheet
- fiber
- matrix resin
- reinforcing fibers
- 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.)
- Expired - Lifetime
Links
Landscapes
- Bridges Or Land Bridges (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、繊維強化プラスチックにより橋梁や高架道
路などを初めとする構築物の補強をするに際し、補強現
場で施行性良く補強を行なうことができ且つ補強強度も
向上することを可能とした構築物の補強方法に関する。Description: BACKGROUND OF THE INVENTION The present invention relates to a method of reinforcing a building, such as a bridge or an elevated road, with a fiber-reinforced plastic. The present invention relates to a method for reinforcing a structure that can also improve strength.
従来の技術 橋梁や高架道路などの橋脚を繊維強化プラスチックに
より補強することが行なわれている。2. Description of the Related Art Bridge piers such as bridges and elevated roads are reinforced with fiber reinforced plastic.
その補強の仕方として、従来、 （１）硬化した繊維強化プラスチックを橋脚の補強箇所
に貼り付ける方法、 （２）橋脚の補強箇所にプリプレグを貼り付け、その上
に加熱硬化時の変形を防止するための押さえテープを巻
回して、加熱硬化することにより繊維強化プラスチック
と為す方法、 （３）橋脚の補強箇所に強化繊維のクロスを巻き付け
て、それに室温硬化型のマトリクス樹脂を含浸させ、押
さえテープを巻回後に放置して硬化させることにより、
繊維強化プラスチックと為す方法、 が知られている。Conventionally, there are two ways to reinforce it: (1) a method in which hardened fiber-reinforced plastic is applied to the reinforced portion of the pier; (2) a prepreg is applied to the reinforced portion of the pier to prevent deformation during heat curing. (3) wrap a reinforcing fiber cloth around the reinforced portion of the pier and impregnate it with a room-temperature-curable matrix resin, and press the holding tape. By leaving it after winding and curing
It is known to use fiber reinforced plastic.
発明が解決しようとする課題 しかしながら、上記（１）の方法では、補強の効率は
良好であるが、湾曲した補強箇所では実施できないとい
う大きな欠点がある。Problems to be Solved by the Invention However, the method (1) described above has good reinforcement efficiency, but has a serious drawback that it cannot be performed at a curved reinforcement portion.
（２）の方法では、橋脚の補強箇所に貼り付けたプリ
プレグを現場で加熱硬化しなければならないので、加熱
硬化の作業が容易でない欠点がある。In the method (2), the prepreg adhered to the reinforced portion of the pier must be heat-cured on site, so that there is a disadvantage that the heat-curing operation is not easy.
（３）の方法では、強化繊維を平織、綾織等によりク
ロスにして用いているため、強化繊維はその縦糸と横糸
とが交わる箇所で強度が弱く、これが原因で繊維強化プ
ラスチックとしたときに十分な補強効果が得られない欠
点がある。In the method (3), since the reinforcing fiber is used as a cross by plain weaving or twill weaving, the reinforcing fiber has a low strength at the intersection of the warp and the weft, and this is sufficient when the fiber is made into fiber reinforced plastic. There is a disadvantage that a great reinforcing effect cannot be obtained.
上記以外に、橋脚の補強箇所に現場でフィラメントワ
ィンディング方により樹脂を含浸させた強化繊維の糸を
巻き付け、その後硬化して繊維強化プラスチックと為す
方法も考えられているが、補強対象が限られる上に設備
コストが高い等の欠点があり、実用的でない。In addition to the above, a method is also considered in which a reinforcing fiber yarn impregnated with resin is wound around the reinforcing point of the pier by a filament winding method on site and then cured to form a fiber reinforced plastic, but the reinforcement target is limited. Has the disadvantages of high equipment costs and is not practical.
従って本発明の目的は、上述の現状に鑑み、繊維強化
プラスチックにより橋梁や高架道路などを初めとする構
築物の補強をするに際し、補強現場で施行性良く補強を
行なうことができ且つ補強強度も向上することを可能と
した構築物の補強方法を提供することである。Therefore, an object of the present invention is to provide a workable reinforcement at a reinforcement site when reinforcing structures such as bridges and elevated roads with fiber-reinforced plastic in view of the above-mentioned situation, and to improve the reinforcement strength. The present invention provides a method for reinforcing a structure that enables the building to be performed.
課題を解決するための手段 上記目的は本発明に係る構築物の補強方法にて達成さ
れる。要約すれば本発明は、構築物の補強箇所の表面
に、支持体シート上に強化繊維を一方向に配列して設け
た一方向配列強化繊維シートの前記強化繊維に室温強化
型のマトリクス樹脂を含浸させて、前記繊維シートを貼
り付け、然るのち前記マトリクス樹脂を硬化させること
を特徴とする構築物の補強方法である。Means for Solving the Problems The above object is achieved by a method for reinforcing a building according to the present invention. In summary, the present invention relates to a method for impregnating a room-temperature-reinforced matrix resin into the reinforcing fibers of a unidirectionally arrayed reinforcing fiber sheet provided with reinforcing fibers unidirectionally arranged on a support sheet on the surface of a reinforcing portion of a building. Then, the fiber sheet is affixed, and then the matrix resin is cured.
本発明の他の態様によれば、構築物の補強箇所の表面
に室温硬化型のマトリクス樹脂を塗布し、支持体シート
上に強化繊維を一方向に配列して設けた一方向配列強化
繊維シートを前記表面に貼り付けて、前記強化繊維に前
記樹脂を含浸させ、然るのち前記マトリクス樹脂が硬化
される。According to another aspect of the present invention, a room-temperature-curable matrix resin is applied to the surface of a reinforcing portion of the building, and a unidirectional array reinforcing fiber sheet provided with reinforcing fibers arranged in one direction on a support sheet is provided. Affixed to the surface to impregnate the reinforcing fibers with the resin, after which the matrix resin is cured.
本発明の更に他の態様によれば、構築物の補強箇所の
表面に、樹脂浸透性の支持体シート上に強化繊維を一方
向に配列して設けた一方向配列強化繊維シートを貼り付
け、その後に前記シート側から室温硬化型のマトリクス
樹脂を浸透させて前記強化繊維に含浸させ、然るのち前
記マトリクス樹脂が硬化される。According to still another aspect of the present invention, on the surface of the reinforcing portion of the building, a unidirectional array reinforcing fiber sheet provided with reinforcing fibers arranged in one direction on a resin-permeable support sheet is attached, and then Then, a matrix resin of room temperature curing type is permeated from the sheet side to impregnate the reinforcing fibers, and then the matrix resin is cured.
実施例 以下、本発明の実施例について説明する。Examples Hereinafter, examples of the present invention will be described.
第１図は、本発明の構築物の補強方法で使用される一
方向配列強化繊維シートの一例を示す断面図である。FIG. 1 is a cross-sectional view showing an example of a unidirectionally reinforced fiber sheet used in the method for reinforcing a building according to the present invention.
上記の一方向配列強化繊維シート１は、支持体シート
２上に接着剤層３を設けて、シート２上に接着剤層３を
介して強化繊維４を一方向に配列して接着したもので、
本発明の補強方法では、この強化繊維シート１を用い、
橋梁や高架道路などの補強現場で強化繊維４に室温硬化
型マトリクス樹脂を含浸させて、補強に供するものであ
る。The unidirectionally reinforced fiber sheet 1 is obtained by providing an adhesive layer 3 on a support sheet 2 and arranging and bonding reinforcing fibers 4 in one direction on the sheet 2 via the adhesive layer 3. ,
In the reinforcing method of the present invention, this reinforcing fiber sheet 1 is used,
The reinforcing fibers 4 are impregnated with a room-temperature-curable matrix resin at a reinforcing site such as a bridge or an elevated road to provide reinforcement.
上記支持体シート２は、スクリムクロス、ガラスクロ
ス、離型紙、ナイロンフィルム等が使用され、このう
ち、シート２に上記のスクリムクロス、ガラスクロス等
を使用したものでは、マトリクス樹脂をシート２側から
強化繊維４に含浸することができるようになっている。
支持体シート２の厚みは、可撓性を有し且つ強化繊維４
を支持可能な強度を備える観点から、１〜500μｍ、好
ましくは５〜100μｍ程度とされる。As the support sheet 2, a scrim cloth, a glass cloth, a release paper, a nylon film, or the like is used. In the case where the scrim cloth, the glass cloth, or the like is used for the sheet 2, the matrix resin is applied from the sheet 2 side. The reinforcing fibers 4 can be impregnated.
The thickness of the support sheet 2 is flexible and the reinforcing fibers 4
From the viewpoint of having a strength capable of supporting the thickness, the thickness is about 1 to 500 μm, preferably about 5 to 100 μm.
接着剤層３を形成する接着剤は、原則として支持体シ
ート２上に強化繊維４を少なくとも一時的に接着できる
ものならば何でもよいが、マトリクス樹脂による強化繊
維４の補強効果と同様な効果を接着剤層３にも与えるよ
うにすれば好ましいことから、接着剤はマトリクス樹脂
との相溶性のよい樹脂を使用することが好ましく、例え
ばマトリクス樹脂としてエポキシ樹脂を使用するときに
は、エポキシ系の接着剤を用いることがよい。接着剤層
３の厚みは、強化繊維４を一時的に接着できればよいこ
とから、５〜100μｍ、好ましくは10〜30μｍ程度とさ
れる。The adhesive forming the adhesive layer 3 may be any material that can at least temporarily bond the reinforcing fibers 4 to the support sheet 2 in principle, but has the same effect as the reinforcing effect of the reinforcing fibers 4 by the matrix resin. Since it is preferable to provide the adhesive to the adhesive layer 3, it is preferable to use a resin having good compatibility with the matrix resin. For example, when an epoxy resin is used as the matrix resin, an epoxy-based adhesive is used. It is better to use The adhesive layer 3 has a thickness of 5 to 100 μm, preferably about 10 to 30 μm, as long as the reinforcing fibers 4 can be temporarily bonded.
強化繊維４は、これをフィラメントとして多数本収束
した繊維束または軽度に撚りをかけて収束した繊維束を
接着剤層３上に並べて上方から押し潰すことにより軽度
にバラされ、これにより強化繊維４は集束剤または撚り
による結合により複数層に積層した状態で、支持体シー
ト２上に接着剤層３を介して一方向に配列して接着さ
れ、かくして所望の強化繊維シート１が得られる。The reinforcing fibers 4 are lightly disintegrated by arranging a large number of converged fiber bundles or lightly twisted and converged fiber bundles as filaments on the adhesive layer 3 and crushing them from above. In a state of being laminated in a plurality of layers by a sizing agent or a twisting connection, they are arranged and adhered in one direction via an adhesive layer 3 on a support sheet 2, thus obtaining a desired reinforcing fiber sheet 1.
その場合、複数層の強化繊維４は、第２図（ａ）に示
すように、繊維束4Aを接着剤層３を介して支持体シート
２上に密に一方向に並べて、繊維束4Aを上から押し潰す
ことにより繊維束4Aの下部を接着剤層３に接着して、第
２図（ｂ）に示すように、支持体シート２上に横方向に
間隔を置かずに密に設けたものでも、或いは、第３図
（ａ）に示すように、繊維束4Aを接着剤層３を介して支
持体シート２上に横方向に間隔を開けて一方向に並べ
て、同様に繊維束4Aを上から押し潰すことにより繊維束
4Aの下部を接着剤層３に接着して、第３図（ｂ）に示す
ように、支持体シート２上に横方向に間隔を置いて疎に
設けたものでも、どちらでもよい。In this case, as shown in FIG. 2 (a), the reinforcing fibers 4 of a plurality of layers are arranged such that the fiber bundles 4A are densely arranged on the support sheet 2 via the adhesive layer 3 in one direction. The lower part of the fiber bundle 4A was adhered to the adhesive layer 3 by crushing from above, and as shown in FIG. 2 (b), the fiber bundle 4A was densely provided on the support sheet 2 without any horizontal space. Alternatively, as shown in FIG. 3 (a), the fiber bundles 4A are arranged in one direction on the support sheet 2 via the adhesive layer 3 at intervals in the horizontal direction. By crushing the fiber bundle from above
The lower portion of 4A is adhered to the adhesive layer 3, and as shown in FIG. 3 (b), it may be either sparsely provided on the support sheet 2 with a horizontal space therebetween.
繊維束4Aは、繊維４、即ちフィラメント４の開繊を行
ったものでも、行わないものでもどちらでも使用するこ
とができ、繊維束4Aの押し潰しの程度は、これによって
配列した複数層の繊維４の層に得たい層厚にもよるが、
炭素繊維の場合を示すと、直径５〜15μｍの炭素繊維の
フィラメントを12000本程度収束した炭素繊維束のと
き、これを横方向の幅が5mm程度になるように押し潰す
ことが一例として挙げられる。The fiber bundle 4A can be used with or without the fiber 4, that is, the fiber 4 is opened. The degree of crushing of the fiber bundle 4A is determined by the degree of crushing of a plurality of layers of fibers. Although it depends on the layer thickness that you want to obtain for layer 4,
In the case of carbon fiber, for example, when a carbon fiber bundle in which about 12,000 carbon fiber filaments having a diameter of 5 to 15 μm are converged, crushing the carbon fiber bundle so that the width in the lateral direction is about 5 mm is given as an example. .
以上のような一方向配列強化繊維シート１は、例えば
第４図に示すようにして製造することができる。The unidirectionally reinforced fiber sheet 1 as described above can be manufactured, for example, as shown in FIG.
即ち、シート供給ロール６から供給された支持体シー
ト２上に接着剤塗布ロール７で接着剤を塗布して接着剤
層３を設けた後、シート２を一対の加圧ローラ8a、8bが
設けられた加圧部８へ送り込み、同時に加圧部８へ強化
繊維４の繊維束4Aと離型紙ロール10からの離型紙９とを
送り込んで、シート２上の接着剤層３上に繊維束4Aを一
方向に並べ、その上に離型紙９を重ねる。そしてその状
態で加圧ローラ8a、8bと図示しない支持板とで加圧し、
繊維束4Aを押し潰すと同時に、これにより軽度にバラさ
れた強化繊維４を接着剤層３を介してシート２上に接着
する。その後、離型紙９を離型紙巻取りロール11で巻き
取り、必要に応じてフィルム供給ロール12から供給した
カバーフィルム13をシート２上の強化繊維４上に被せ、
これにより支持体シート２上の接着剤層３を介して強化
繊維４を一方向に配列して接着してなる一方向強化繊維
シート１が得られる。得られたシート１はシート巻取り
ロール14に巻き取られる。That is, after the adhesive is applied on the support sheet 2 supplied from the sheet supply roll 6 by the adhesive application roll 7 to provide the adhesive layer 3, the sheet 2 is provided with a pair of pressure rollers 8a and 8b. The fiber bundle 4A of the reinforcing fibers 4 and the release paper 9 from the release paper roll 10 are simultaneously sent to the pressure unit 8 and the fiber bundle 4A is placed on the adhesive layer 3 on the sheet 2. Are arranged in one direction, and the release paper 9 is stacked thereon. Then, in this state, pressure is applied by the pressure rollers 8a and 8b and a support plate (not shown),
At the same time that the fiber bundle 4A is crushed, the reinforcing fibers 4 that have been slightly loosened thereby are adhered to the sheet 2 via the adhesive layer 3. Thereafter, the release paper 9 is taken up by a release paper take-up roll 11, and a cover film 13 supplied from a film supply roll 12 is covered on the reinforcing fibers 4 on the sheet 2 as necessary.
As a result, a unidirectional reinforcing fiber sheet 1 obtained by arranging and adhering reinforcing fibers 4 in one direction via the adhesive layer 3 on the support sheet 2 is obtained. The obtained sheet 1 is wound on a sheet winding roll 14.
本発明では、上述したように、強化繊維シート１を用
い、橋梁や高架道路などの補強現場で強化繊維４に室温
硬化型マトリクス樹脂を含浸させて補強に供されるが、
室温硬化型樹脂には、硬化剤の配合を調節して室温で硬
化するようにしたエポキシ樹脂等が使用される。In the present invention, as described above, the reinforcing fiber sheet 1 is used for reinforcement by impregnating the reinforcing fiber 4 with a room temperature curing type matrix resin at a reinforcing site such as a bridge or an elevated road.
As the room temperature curing resin, an epoxy resin or the like which is cured at room temperature by adjusting the blending of a curing agent is used.
本発明によれば、構築物の補強は次のように行われ
る。According to the invention, the reinforcement of the structure is performed as follows.
即ち、本発明の一実施例では、橋梁や高架道路の橋脚
など構築物の補強現場で、ローラ、刷毛、吹付け等の適
宜な塗布手段により一方向配列強化繊維シート１上の強
化繊維４に室温硬化型のマトリクス樹脂を塗布して含浸
させ、第５図に示すように、強化繊維４の側を構築物の
補強箇所15側としてシート１を補強箇所15の周囲に貼り
付け、所望の数だけ積層する。次いでハンドローラ等で
マトリクス樹脂の含浸操作を行った後、その上に押さえ
テープを巻回するなどしてカバーを行い、その後そのま
ま放置してマトリクス樹脂を硬化させ、シート１を繊維
強化プラスチックと為せばよい。これにより繊維強化プ
ラスチックによる構築物の補強が行われる。That is, in one embodiment of the present invention, at a reinforcement site of a structure such as a bridge or an elevated road pier, the reinforcing fibers 4 on the unidirectionally arrayed reinforcing fiber sheet 1 are applied to the reinforcing fibers 4 on a one-way array reinforcing fiber sheet 1 by an appropriate application means such as a roller, a brush, or a spray. A curable matrix resin is applied and impregnated, and as shown in FIG. 5, the sheet 1 is stuck around the reinforcing points 15 with the reinforcing fiber 4 side as the reinforcing point 15 side of the building, and a desired number is laminated. I do. Then, after performing an operation of impregnating the matrix resin with a hand roller or the like, covering is performed by winding a pressing tape thereon, and then leaving the matrix resin as it is to cure the matrix resin. I should do it. This reinforces the structure with fiber reinforced plastic.
本発明の他の実施例では、第６図に示すように、補強
箇所15の周囲に室温硬化型のマトリクス樹脂18を例えば
100μｍ程度の厚みに塗布し、次いで強化繊維４の側を
補強箇所15側として一方向配列強化繊維シート１を所望
の数だけ積層し、そして押し付けることによりシート１
を貼り付けると同時に強化繊維４にマトリクス樹脂18を
含浸させる。この場合、先に積層したシート１上に次ぎ
のシート１を積層する度に、先のシート１の支持体シー
ト２に更にマトリクス樹脂を塗布してもよい。その後
は、上記と同様に、シート１上に押さえテープを巻回す
るなどしてカバーを行い、その後そのまま放置してマト
リクス樹脂を硬化させ、シート１を繊維強化プラスチッ
クと為せばよい。これにより同様に繊維強化プラスチッ
クによる構築物の補強が行われる。In another embodiment of the present invention, as shown in FIG.
A desired number of unidirectionally reinforced fiber sheets 1 are laminated and pressed to a thickness of about 100 μm, and then the reinforcing fiber 4 side is set to the reinforcing portion 15 side, and the sheet 1 is pressed.
At the same time, the matrix resin 18 is impregnated in the reinforcing fibers 4. In this case, the matrix resin may be further applied to the support sheet 2 of the previous sheet 1 each time the next sheet 1 is stacked on the previously stacked sheet 1. Thereafter, in the same manner as described above, the cover may be formed by winding a pressing tape on the sheet 1 or the like, and then the sheet 1 may be left as it is to cure the matrix resin, and the sheet 1 may be made of fiber reinforced plastic. This also reinforces the structure with fiber reinforced plastic.
本発明の更に他の態様では、一方向配列強化繊維シー
ト１として支持体シート２が樹脂浸透性のものを使用す
る。第７図に示すように、先ず、補強箇所15の周囲表面
上にプライマー16としてマトリクス樹脂と同系の樹脂を
塗布し、その上からシート１を貼り付けて所望の数だけ
積層し、その後最外層のシート１の支持体シート２上か
らローラ等により室温硬化型マトリクス樹脂17を塗布し
てシート２を通って浸透させ、マトリクス樹脂17を補強
繊維４に含浸させるようにする。その後は、上記と同様
に、シート１上に押さえテープを巻回するなどしてカバ
ーを行い、その後そのまま放置してマトリクス樹脂17を
硬化させ、シート１を繊維強化プラスチックと為せばよ
い。これにより同様に繊維強化プラスチックによる構築
物の補強が行われる。In still another embodiment of the present invention, as the unidirectionally reinforced fiber sheet 1, a support sheet 2 having a resin-permeable property is used. As shown in FIG. 7, first, a resin of the same type as the matrix resin is applied as a primer 16 on the peripheral surface of the reinforcing portion 15, and the sheets 1 are adhered thereon and laminated in a desired number, and then the outermost layer is formed. A room temperature-curable matrix resin 17 is applied from above the support sheet 2 of the sheet 1 with a roller or the like, and penetrates through the sheet 2 to impregnate the matrix resin 17 into the reinforcing fibers 4. Thereafter, in the same manner as described above, the cover may be formed by winding a pressing tape on the sheet 1 or the like, and then the sheet 1 may be left as it is to cure the matrix resin 17 so that the sheet 1 is made of fiber reinforced plastic. This also reinforces the structure with fiber reinforced plastic.
以上の各実施例では、いずれも、強化繊維シート１は
強化繊維４の側を補強箇所15側として貼り付け、積層し
たが、支持体シート２側を補強箇所15側として貼り付
け、積層してもよい。In each of the above embodiments, the reinforcing fiber sheet 1 was attached and laminated with the reinforcing fiber 4 side as the reinforcing point 15 side, but was laminated and attached with the support sheet 2 side as the reinforcing point 15 side. Is also good.
本発明の補強方法は以上のように構成される。これに
よれば、繊維強化プラスチックにより橋梁や高架道路な
どを初めとする構築物の補強をするに際し、支持体シー
ト上に強化繊維を一方向に配列して設けた一方向配列強
化繊維シート１を用い、補強現場で強化繊維４に室温硬
化型のマトリクス樹脂を含浸させて使用するようにして
いるので、マトリクス樹脂を含浸させたシート１を補強
箇所の周囲に貼り付けてそのまま放置することにより、
マトリクス樹脂を硬化させてシート１を繊維強化プラス
チックと為すことができ、補強現場でのマトリクス樹脂
の加熱硬化という面倒な作業を行うことなく、施行性良
く繊維強化プラスチックによる補強を行なうことができ
る。また強化繊維４は一方向に配列されているので、こ
れをクロスにしたときのような繊維強化プラスチックの
強度低下がなく、従って補強強度を向上することができ
る。更にシート１を補強箇所の周囲に貼り付けた後にマ
トリクス樹脂を硬化させるので、湾曲した補強箇所でも
補強の実施をすることができる。The reinforcing method of the present invention is configured as described above. According to this, when reinforcing structures such as bridges and elevated roads with fiber-reinforced plastic, a unidirectionally arrayed fiber sheet 1 in which reinforcing fibers are arranged in one direction on a support sheet is used. Since the reinforcing fibers 4 are used by impregnating the room temperature curing type matrix resin with the reinforcing fibers 4 at the reinforcing site, the sheet 1 impregnated with the matrix resin is stuck around the reinforcing portion and left as it is.
The sheet 1 can be made of a fiber-reinforced plastic by curing the matrix resin, and the reinforcement with the fiber-reinforced plastic can be performed with good workability without performing the troublesome work of heating and curing the matrix resin at the reinforcing site. Further, since the reinforcing fibers 4 are arranged in one direction, the strength of the fiber-reinforced plastic does not decrease as in the case where the reinforcing fibers 4 are crossed, so that the reinforcing strength can be improved. Further, since the matrix resin is cured after the sheet 1 is pasted around the reinforcing portion, the reinforcing can be performed even at the curved reinforcing portion.
発明の効果 以上説明したように、本発明の補強方法では、支持体
シート上に強化繊維を一方向に配列して設けた一方向配
列強化繊維シートを用い、補強現場で強化繊維に室温硬
化型のマトリクス樹脂を含浸させて補強に供しているの
で、強化繊維にマトリクス樹脂を含浸させた強化繊維シ
ートを補強箇所の周囲に貼り付けてそのまま放置するこ
とにより、補強現場でのマトリクス樹脂の加熱硬化とい
う面倒な作業を行うことなく、マトリクス樹脂を硬化さ
せて繊維強化プラスチックと為して、施行性よく補強を
行わせることができる。また強化繊維を一方向に配列し
ているので、得られる繊維強化プラスチックによる補強
強度を向上することができる。また補強箇所が湾曲して
いても補強の実施を行うことができる。Effect of the Invention As described above, in the reinforcing method of the present invention, a unidirectionally arrayed reinforcing fiber sheet provided with reinforcing fibers arranged in one direction on a support sheet is used. The matrix resin impregnated with the matrix resin is used for reinforcement, so the reinforcing fiber sheet in which the matrix resin is impregnated with the reinforcing fiber is stuck around the reinforcement area and left as it is, so that the matrix resin is cured by heating at the site of reinforcement. This makes it possible to harden the matrix resin into a fiber-reinforced plastic and perform the reinforcement with good workability without performing such a troublesome operation. In addition, since the reinforcing fibers are arranged in one direction, the reinforcing strength of the obtained fiber-reinforced plastic can be improved. Further, the reinforcement can be performed even if the reinforcement portion is curved.
第１図は、本発明の補強方法で使用する一方向配列強化
繊維シートの一例を示す断面図である。 第２図（ａ）は、第１図の強化繊維シートでの強化繊維
の繊維束の並べ方の一態様を示す断面図である。 第２図（ｂ）は、第２図（ａ）の繊維束から得られる強
化繊維の配列を示す断面図である。 第３図（ａ）は、第１図の強化繊維シートでの強化繊維
の繊維束の並べ方の他の態様を示す断面図である。 第３図（ｂ）は、第３図（ａ）の繊維束から得られる強
化繊維の配列を示す断面図である。 第４図は、第１図の強化繊維シートの製造法の一例を示
す説明図である。 第５図は、本発明の補強方法の一実施例を示す断面図で
ある。 第６図は、本発明の補強方法の他の実施例を示す断面図
である。 第７図は、本発明の補強方法の更に他の実施例を示す断
面図である。 1:強化繊維シート 2:支持体シート 3:接着剤層 4:強化繊維 4A:繊維束 15:補強箇所 16:プライマー 17、18:マトリクス樹脂FIG. 1 is a sectional view showing an example of a unidirectionally reinforced fiber sheet used in the reinforcing method of the present invention. FIG. 2A is a cross-sectional view showing one embodiment of a method of arranging fiber bundles of reinforcing fibers in the reinforcing fiber sheet of FIG. FIG. 2 (b) is a cross-sectional view showing the arrangement of reinforcing fibers obtained from the fiber bundle of FIG. 2 (a). FIG. 3A is a cross-sectional view showing another mode of arranging the fiber bundles of the reinforcing fibers in the reinforcing fiber sheet of FIG. FIG. 3 (b) is a cross-sectional view showing an arrangement of reinforcing fibers obtained from the fiber bundle of FIG. 3 (a). FIG. 4 is an explanatory view showing an example of a method for producing the reinforcing fiber sheet of FIG. FIG. 5 is a sectional view showing an embodiment of the reinforcing method of the present invention. FIG. 6 is a sectional view showing another embodiment of the reinforcing method of the present invention. FIG. 7 is a sectional view showing still another embodiment of the reinforcing method of the present invention. 1: Reinforced fiber sheet 2: Support sheet 3: Adhesive layer 4: Reinforced fiber 4A: Fiber bundle 15: Reinforced part 16: Primer 17, 18: Matrix resin
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) E01D 19/02 E04G 23/02──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) E01D 19/02 E04G 23/02
Claims (3)
上に強化繊維を一方向に配列して設けた一方向配列強化
繊維シートの前記強化繊維に室温硬化型のマトリクス樹
脂を含浸させて、前記繊維シートを貼り付け、然るのち
前記マトリクス樹脂を硬化させることを特徴とする構築
物の補強方法。1. A room-temperature-curable matrix resin is impregnated on a reinforcing fiber of a unidirectionally reinforced fiber sheet in which reinforcing fibers are arranged in one direction on a support sheet on the surface of a reinforcing portion of the construct. Bonding the fiber sheet and then curing the matrix resin.
トリクス樹脂を塗布し、支持体シート上に強化繊維を一
方向に配列して設けた一方向配列強化繊維シートを前記
表面に貼り付けて、前記強化繊維に前記樹脂を含浸さ
せ、然るのち前記マトリクス樹脂を硬化させることを特
徴とする構築物の補強方法。2. A room-temperature-curable matrix resin is applied to the surface of the reinforcing portion of the structure, and a unidirectionally reinforced fiber sheet in which reinforcing fibers are arranged in one direction on a support sheet is attached to the surface. A method for reinforcing a structure, wherein the reinforcing fibers are impregnated with the resin, and then the matrix resin is cured.
支持体シート上に強化繊維を一方向に配列して設けた一
方向配列強化繊維シートを貼り付け、その後に前記シー
ト側から室温硬化型のマトリクス樹脂を浸透させて前記
強化繊維に含浸させ、然るのち前記マトリクス樹脂を硬
化させることを特徴とする構築物の補強方法。3. A unidirectionally reinforced fiber sheet, in which reinforcing fibers are arranged in one direction on a resin-permeable support sheet, is adhered to the surface of the reinforcing portion of the building, and then the room temperature is applied from the sheet side. A method of reinforcing a building, characterized in that a hardening type matrix resin is permeated to impregnate the reinforcing fibers, and then the matrix resin is hardened.
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019928A JP2819333B2 (en) | 1990-01-30 | 1990-01-30 | How to reinforce structures |
| US07/646,572 US5308430A (en) | 1990-01-30 | 1991-01-28 | Reinforcing fiber sheet, method of manufacturing the same, and the method of reinforcing structure with the reinforcing fiber sheet |
| KR1019910001554A KR0170401B1 (en) | 1990-01-30 | 1991-01-30 | Reinforcing fiber sheet, method of manufacturing the same |
| DE1991622976 DE69122976T2 (en) | 1990-01-30 | 1991-01-30 | Reinforcing fiber sheet and method for reinforcing a structure with the reinforcing fiber sheet |
| EP96200172A EP0723855B1 (en) | 1990-01-30 | 1991-01-30 | Method of reinforcing a structure with the reinforcing fiber sheet |
| DE1991632322 DE69132322T2 (en) | 1990-01-30 | 1991-01-30 | Method for reinforcing a structure with a reinforcing fiber arch |
| EP19910300684 EP0441519B1 (en) | 1990-01-30 | 1991-01-30 | Reinforcing fiber sheet and method of reinforcing structure with the reinforcing fiber sheet |
| CA 2071097 CA2071097C (en) | 1990-01-30 | 1992-06-12 | Reinforcing fiber sheet, method of manufacturing the same, and method of reinforcing structure with the reinforcing fiber sheet |
| US08/031,436 US5326630A (en) | 1990-01-30 | 1993-03-15 | Reinforcing fiber sheet, method of manufacturing the same, and method of reinforcing structure with the reinforcing fiber sheet |
| KR97014416A KR970009566B1 (en) | 1990-01-30 | 1997-04-18 | Method of reinforcing structure with the reinforcing fiber sheet |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019928A JP2819333B2 (en) | 1990-01-30 | 1990-01-30 | How to reinforce structures |
| CA 2071097 CA2071097C (en) | 1990-01-30 | 1992-06-12 | Reinforcing fiber sheet, method of manufacturing the same, and method of reinforcing structure with the reinforcing fiber sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03224901A JPH03224901A (en) | 1991-10-03 |
| JP2819333B2 true JP2819333B2 (en) | 1998-10-30 |
Family
ID=25675206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2019928A Expired - Lifetime JP2819333B2 (en) | 1990-01-30 | 1990-01-30 | How to reinforce structures |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2819333B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3258569B2 (en) * | 1995-09-01 | 2002-02-18 | 株式会社熊谷組 | Method and structure for reinforcing the periphery of hole in concrete beam |
| CA2236035C (en) | 1995-11-01 | 2002-12-10 | Mitsubishi Rayon Co., Ltd. | Repair and reinforcement method for preexisting structures and an anisotropic textile used therefor |
| JP3741490B2 (en) * | 1996-09-17 | 2006-02-01 | 佐藤工業株式会社 | Seismic reinforcement method for existing concrete structures |
| JP2002256139A (en) * | 2001-03-01 | 2002-09-11 | Toray Ind Inc | Two-package epoxy resin composition and method for repairing and reinforcing concrete structure |
| JP2006152605A (en) * | 2004-11-26 | 2006-06-15 | Sanko Techno Co Ltd | Photocurable prepreg sheet and heat-insulating and waterproof construction method using it |
| JP4767557B2 (en) * | 2005-03-07 | 2011-09-07 | アイカ工業株式会社 | Anticorrosion method for concrete structures |
| JP2012211244A (en) * | 2011-03-31 | 2012-11-01 | Aica Kogyo Co Ltd | Epoxy resin adhesive composition |
-
1990
- 1990-01-30 JP JP2019928A patent/JP2819333B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03224901A (en) | 1991-10-03 |
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