JP3527341B2 - Seismic retrofitting method for existing structures and fiber sheet used in the method - Google Patents
Seismic retrofitting method for existing structures and fiber sheet used in the methodInfo
- Publication number
- JP3527341B2 JP3527341B2 JP32450395A JP32450395A JP3527341B2 JP 3527341 B2 JP3527341 B2 JP 3527341B2 JP 32450395 A JP32450395 A JP 32450395A JP 32450395 A JP32450395 A JP 32450395A JP 3527341 B2 JP3527341 B2 JP 3527341B2
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- thermosetting resin
- existing structure
- epoxy resin
- fiber sheet
- 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 - Fee Related
Links
Landscapes
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Laminated Bodies (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、既存構造物の耐震補
強工法および同工法に用いる繊維シートに関し、特に、
補強を施す既存構造物への損傷を低減することができる
既存構造物の耐震補強工法および同工法に用いる繊維シ
ートに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic strengthening method for existing structures and a fiber sheet used in the method, and in particular,
The present invention relates to a seismic retrofitting method for existing structures that can reduce damage to existing structures to be reinforced, and a fiber sheet used in the method.
【０００２】[0002]
【従来の技術】近年、既存コンクリート構造物の耐震補
強工法として、構造物の外表面に炭素繊維やアラミド繊
維などの高張力繊維材を貼付したり、あるいは、捲回し
て補強する技術が注目されている。このような耐震補強
工法では、高張力繊維材同士および当該高張力繊維材と
既存コンクリート構造物との間の一体化を図り、高張力
繊維材の補強効果を有効に発揮させるために、高張力繊
維材にエポキシ樹脂などの熱硬化性樹脂を含浸させてい
る。2. Description of the Related Art In recent years, as a seismic retrofitting method for existing concrete structures, a technique has been attracting attention in which high-strength fiber materials such as carbon fiber or aramid fiber are attached to the outer surface of the structure or wound to reinforce. ing. In such a seismic reinforcement method, in order to integrate the high-strength fiber materials with each other and between the high-tensile fiber materials and the existing concrete structure, in order to effectively exert the reinforcing effect of the high-strength fiber materials, The fiber material is impregnated with thermosetting resin such as epoxy resin.
【０００３】このような用途に用いられる熱硬化性樹脂
は、１００℃程度の温度で硬化する高温硬化型のもの
と、１０〜３０℃程度の温度で硬化する常温硬化型のも
のが提供されている。しかしながら、このような熱硬化
性樹脂には、いずれも以下に説明する技術的な課題が指
摘されていた。Thermosetting resins used for such purposes are provided as a high temperature curable type which is cured at a temperature of about 100 ° C. and a room temperature curable type which is cured at a temperature of about 10 to 30 ° C. There is. However, the technical problems described below have been pointed out for all of these thermosetting resins.
【０００４】[0004]
【発明が解決しようとする課題】すなわち、高温硬化型
の熱硬化樹脂を使用すると、硬化反応が加熱により促進
され、施工能率が向上するものの、既存コンクリート構
造物が高温化に伴って劣化するなどの問題があった。一
方、常温硬化型の熱硬化性樹脂を使用すると、既存コン
クリート構造物に損傷を与えることは少ないが、硬化に
時間がかかり、施工期間が長くなる。That is, when a high temperature curing type thermosetting resin is used, the curing reaction is accelerated by heating and the construction efficiency is improved, but the existing concrete structure is deteriorated as the temperature rises. There was a problem. On the other hand, when the room temperature curable thermosetting resin is used, the existing concrete structure is rarely damaged, but it takes a long time to cure and the construction period becomes long.
【０００５】本発明は、このような問題点に鑑みてなさ
れたものであって、その目的とするところは、既存構造
物に損傷を与えることが少なく、しかも、施工能率も向
上させることができる既存構造物の耐震補強工法および
同工法に用いる繊維シートを提供することにある。The present invention has been made in view of the above problems, and an object of the present invention is to cause less damage to existing structures and to improve the working efficiency. It is to provide a seismic strengthening method for existing structures and a fiber sheet used for the method.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に、本発明は、既存構造物の外表面に、炭素繊維などの
高張力繊維材に熱硬化性樹脂を含浸させて貼付するか、
または、捲回し、その後に前記熱硬化性樹脂を硬化させ
る既存構造物の耐震補強工法において、前記熱硬化性樹
脂は、エポキシ樹脂主剤と、マイクロカプセル膜に包囲
された硬化剤とからなる潜在硬化型のもので構成し、前
記既存構造物に前記高張力繊維材への貼付または捲回が
完了した後に、６０℃以上の温度で加熱して、前記マイ
クロカプセル膜を溶融させて、前記熱硬化性樹脂の硬化
を開始させるようにした。このように構成された既存構
造物の耐震補強工法によれば、高張力繊維材に含浸され
た熱硬化性樹脂は、エポキシ樹脂主剤と、マイクロカプ
セル膜に包囲された硬化剤とからなる潜在硬化型のもの
で構成し、既存構造物に高張力繊維材への貼付または捲
回が完了した後に、６０℃以上の温度で加熱して、マイ
クロカプセル膜を溶融させて、熱硬化性樹脂の硬化を開
始するので、既存構造物に与える損傷が少なくなるとと
もに、常温硬化型のものよりも硬化反応が速くなる。ま
た、本発明は、既存構造物の外表面に熱硬化性樹脂を含
浸させて貼付される繊維シートであって、前記繊維シー
トは、メッシュ状の繊維担持体と、前記繊維担持体の一
面に止着され、一方向に引き揃えられた炭素繊維などの
高張力長繊維とを備え、前記熱硬化性樹脂は、エポキシ
樹脂主剤と、マイクロカプセル膜に包囲された硬化剤と
からなる潜在硬化型のものであって、前記既存構造物へ
の貼付が完了した後に、６０℃以上の温度で加熱して、
前記マイクロカプセル膜を溶融させて、前記熱硬化性樹
脂の硬化を開始させるようにした。このように構成され
た繊維シートを用いると、高張力繊維材に含浸された熱
硬化樹脂が、６０℃以上の温度で加熱すると硬化を開始
する潜在硬化型なので、既存構造物に与える損傷が少な
くなるとともに、常温硬化型のものよりも硬化反応が速
くなる。In order to achieve the above-mentioned object, the present invention is to attach an outer structure of an existing structure by impregnating a high tension fiber material such as carbon fiber with a thermosetting resin,
Alternatively , in a seismic retrofitting method for an existing structure in which the thermosetting resin is wound and then cured, the thermosetting resin is a latent curing agent that includes an epoxy resin main agent and a curing agent surrounded by a microcapsule film. After completion of sticking or winding on the high-strength fiber material on the existing structure, the structure is heated at a temperature of 60 ° C. or higher to melt the microcapsule film, and the thermosetting is performed. The curing of the resin is started. According to the seismic retrofitting method of the existing structure configured as described above, the thermosetting resin impregnated in the high-strength fiber material is a latent curing consisting of the epoxy resin main agent and the curing agent surrounded by the microcapsule film. After the pasting or winding on the high-strength fiber material is completed on the existing structure, it is heated at a temperature of 60 ° C or higher to melt the microcapsule film and cure the thermosetting resin. As a result, the damage to the existing structure is reduced and the curing reaction is faster than that of the room temperature curing type. Further, the present invention is a fiber sheet that is attached by impregnating a thermosetting resin on the outer surface of an existing structure, the fiber sheet comprising a mesh-shaped fiber carrier and one surface of the fiber carrier. A latent-cure type thermosetting resin comprising a high-strength long fiber such as a carbon fiber fastened and aligned in one direction, wherein the thermosetting resin comprises an epoxy resin base and a curing agent surrounded by a microcapsule film. Which is heated at a temperature of 60 ° C. or higher after the attachment to the existing structure is completed,
The microcapsule film was melted to start the curing of the thermosetting resin. When the fiber sheet configured in this way is used, the thermosetting resin impregnated in the high-strength fiber material is a latent curing type that starts to cure when heated at a temperature of 60 ° C. or higher, so that damage to existing structures is reduced. In addition, the curing reaction becomes faster than that of the room temperature curing type.
【０００７】[0007]
【発明の実施の形態】以下、本発明の実施の形態につい
て、添付図面に基づいて詳細に説明する。図１は、本発
明にかかる既存構造物の耐震補強工法の一実施例を示し
ている。同図に示す耐震補強工法は、本発明を角形断面
の既存鉄筋コンクリート柱１０に適用した場合を例示し
ている。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 shows an embodiment of a seismic retrofitting method for existing structures according to the present invention. The seismic strengthening method shown in the figure illustrates a case where the present invention is applied to an existing reinforced concrete column 10 having a rectangular cross section.
【０００８】鉄筋コンクリート柱１０に耐震補強を施す
際には、まず、柱１０の外表面に繊維シート１２からな
る高張力繊維材が貼付される。繊維シート１２は、図２
にその詳細を示すように、所定の幅を有する帯状のもの
であって、メッシュ状に形成された繊維担持体１２ａ
と、この繊維担持体１２ａの一面側に止着された炭素繊
維（高張力繊維）１２ｂと、炭素繊維１２ｂに含浸され
たエポキシ樹脂１２ｃとから構成されている。When the reinforced concrete column 10 is to be subjected to seismic reinforcement, first, a high-strength fiber material made of a fiber sheet 12 is attached to the outer surface of the column 10. The fiber sheet 12 is shown in FIG.
As shown in detail below, the fiber carrier 12a is a strip having a predetermined width and formed in a mesh shape.
And a carbon fiber (high tension fiber) 12b fixed to one surface side of the fiber carrier 12a and an epoxy resin 12c impregnated in the carbon fiber 12b.
【０００９】繊維担持体１２ａは、例えば、ガラス繊維
などで形成されている。炭素繊維１２ｂは、繊維シート
１２の幅方向に引き揃えた状態で配置されている。な
お、炭素繊維１２ｂの配置方向は、この方向に限定され
ることはなく、例えば、繊維シート１２の幅方向に斜交
するように引き揃えていよいし、繊維シート１２の長手
方向に引き揃えてもよい。The fiber carrier 12a is made of, for example, glass fiber. The carbon fibers 12b are arranged in a state of being aligned in the width direction of the fiber sheet 12. The arrangement direction of the carbon fibers 12b is not limited to this direction. For example, the carbon fibers 12b may be aligned so as to be oblique to the width direction of the fiber sheet 12, or may be aligned in the longitudinal direction of the fiber sheet 12. Good.
【００１０】エポキシ樹脂１２ｃは、潜在硬化型のもの
であって、エポキシ樹脂主剤とマイクロカプセル膜に包
囲された硬化剤とを混合したものである。このエポキシ
樹脂１２ｃは、マイクロカプセル膜を加熱して溶融させ
ることにより、エポキシ樹脂１２ｃの硬化性が顕在化さ
れるものであって、この溶融温度は、６０℃以上に設定
されている。なお、このカプセル膜の溶融温度は、その
膜厚を異ならせることでコントロールすることができ
る。The epoxy resin 12c is a latent curing type and is a mixture of an epoxy resin base and a curing agent surrounded by a microcapsule film. The epoxy resin 12c is one in which the curability of the epoxy resin 12c is revealed by heating and melting the microcapsule film, and the melting temperature is set to 60 ° C. or higher. The melting temperature of the capsule film can be controlled by changing the film thickness.
【００１１】つまり、カプセル膜を採用した潜在硬化型
エポキシ樹脂１２ｃの硬化性の顕在化は、膜厚みを一定
にした場合に、温度により制御できるとともに、温度を
一定にした場合に、膜厚みを変えることにより制御でき
る。このような構成の潜在硬化型のエポキシ樹脂１２ｃ
としては、例えば、旭化成株式会社製、商品名：ノバキ
ュア ＨＸ−３７２２、主剤：ビスフェノールＡ型エポ
キシ樹脂、硬化材：イミダゾール変性品、カプセル膜の
厚み２μ，溶融温度６０〜７０℃が挙げられる。That is, the manifestation of the curability of the latent curable epoxy resin 12c using the capsule film can be controlled by the temperature when the film thickness is constant, and the film thickness can be controlled when the temperature is constant. It can be controlled by changing it. Latent curing type epoxy resin 12c having such a configuration
Examples thereof include: Asahi Kasei Corporation, trade name: Novacure HX-3722, main agent: bisphenol A type epoxy resin, curing material: imidazole modified product, capsule membrane thickness 2 μ, melting temperature 60 to 70 ° C.
【００１２】潜在硬化型のエポキシ樹脂１２ｃは、液状
のエポキシ樹脂主剤と、マイクロカプセル膜で被覆され
た硬化剤とから構成されているので、これらを混合して
も主剤と硬化剤とが直接接触せず、混合しただけではエ
ポキシ樹脂主剤の硬化が開始されない。このため、これ
らを混合した場合に、エポキシ樹脂主剤の粘度が上昇し
ないので、混合攪拌が容易かつ、十分に行なえ、硬化剤
を主剤中に均一に分散させることができるとともに、繊
維シート１２の炭素繊維１２ｂ間に十分に含浸させるこ
とができる。Since the latent curing type epoxy resin 12c is composed of a liquid epoxy resin main agent and a curing agent coated with a microcapsule film, even if these are mixed, the main agent and the curing agent are in direct contact with each other. If not mixed, the curing of the epoxy resin base material will not start. For this reason, when these are mixed, the viscosity of the epoxy resin main component does not increase, so that mixing and stirring can be performed easily and sufficiently, and the curing agent can be uniformly dispersed in the main component, and the carbon of the fiber sheet 12 can be dispersed. The fibers 12b can be sufficiently impregnated.
【００１３】また、潜在硬化型のエポキシ樹脂１２ｃ
は、主剤と硬化剤とを混合しても、主剤の硬化が開始さ
れないので、予め大量に混合して一液化した状態で長期
間貯蔵することもできる。このように構成された繊維シ
ート１２を既存鉄筋コンクリート柱１０の外表面に貼付
する際には、繊維シート１２が鉄筋コンクリート柱１０
の外周を周回するようにして行われる。The latent curing type epoxy resin 12c
Since the curing of the main agent does not start even when the main agent and the curing agent are mixed, it can be stored in a one-liquid state for a long period of time by mixing a large amount in advance. When the fiber sheet 12 configured as described above is attached to the outer surface of the existing reinforced concrete column 10, the fiber sheet 12 is used.
It goes around the outer circumference of the.
【００１４】このとき、繊維シート１２の炭素繊維１２
ｂが前面側になるようにし、かつ、上下方向の繊維シー
ト１２間で端部同士が相互にオーバラップするようにし
て行われる。なお、繊維シート１２の貼付状態は、図示
のように１層に限ることはなく、２層以上の複数層に設
けてもよい。この場合、層間で炭素繊維１２ｂの引き揃
え方向を異ならせてもよい。At this time, the carbon fiber 12 of the fiber sheet 12
b is on the front side, and the ends of the fiber sheets 12 in the vertical direction overlap each other. In addition, the attachment state of the fiber sheet 12 is not limited to one layer as shown in the figure, and may be provided in two or more layers. In this case, the alignment directions of the carbon fibers 12b may be different between the layers.
【００１５】繊維シート１２の貼付が完了すると、図１
（Ｂ）に示すように、上下端の繊維シート１２の炭素繊
維１２ｂにリード線１４を接続して、リード線１４間に
直流電源（図示省略）を接続して、炭素繊維１２ｂに通
電する。炭素繊維１２ｂに通電すると、炭素繊維１２ｂ
自身の電気抵抗により、繊維１２ｂ自体が発熱する。そ
して、発熱温度が６０℃以上になると、エポキシ樹脂１
２ｃのマイクロカプセル膜が溶融して、硬化剤が放出さ
れ、硬化剤とエポキシ樹脂主剤とが反応して、硬化が開
始される。When the application of the fiber sheet 12 is completed, FIG.
As shown in (B), the lead wires 14 are connected to the carbon fibers 12b of the fiber sheets 12 at the upper and lower ends, and a DC power source (not shown) is connected between the lead wires 14 to energize the carbon fibers 12b. When the carbon fiber 12b is energized, the carbon fiber 12b
The electric resistance of the fiber itself causes the fiber 12b to generate heat. When the heat generation temperature reaches 60 ° C or higher, the epoxy resin 1
The microcapsule film of 2c is melted, the curing agent is released, the curing agent reacts with the epoxy resin base material, and curing is started.
【００１６】この場合、エポキシ樹脂主剤に付加重合型
のものを採用すると、発熱に伴って温度が上昇すると、
連鎖的に反応が開始されるので、より一層好ましい状態
になる。そして、エポキシ樹脂１２ｃの硬化が終了する
と、炭素繊維１２ｂ同士がエポキシ樹脂１２ｃにより一
体的に結着された状態で、既存鉄筋コンクリート柱１０
の表面に接着され、既存鉄筋コンクリート柱１０の耐震
補強が完了する。In this case, if an addition polymerization type epoxy resin is used as the base resin, the temperature rises due to heat generation,
Since the reactions are started in a chain, it becomes a more preferable state. Then, when the curing of the epoxy resin 12c is completed, the carbon fiber 12b is integrally bound by the epoxy resin 12c, and the existing reinforced concrete column 10
Is adhered to the surface of the existing reinforced concrete column 10 and the seismic reinforcement of the existing reinforced concrete column 10 is completed.
【００１７】さて、以上のようにして既存鉄筋コンクリ
ート柱１０の耐震補強を行うと、炭素繊維１２ｂに含浸
されたエポキシ樹脂１２ｃが、６０℃以上の温度で加熱
すると硬化を開始する潜在硬化型なので、既存コンクリ
ート柱１０に与える損傷が少なくなるとともに、常温硬
化型のものよりも硬化反応が速くなり、施工能率も向上
する。When the existing reinforced concrete column 10 is subjected to seismic reinforcement as described above, the epoxy resin 12c impregnated in the carbon fiber 12b is a latent curing type which starts to cure when heated at a temperature of 60 ° C. or higher, The damage to the existing concrete columns 10 is reduced, the curing reaction is faster than that of the room temperature curing type, and the construction efficiency is also improved.
【００１８】図３は、本発明にかかる既存構造物の耐震
補強工法の別の実施例を示している。同図に示す実施例
では、耐震補強対象は、上記実施例と同様に角形断面の
鉄筋コンクリート柱１０である。この鉄筋コンクリート
柱１０の耐震補強は、単繊維を寄り合わせて束にしたス
トランド状の炭素繊維１６を使用している。このストラ
ンド状の炭素繊維１６には、上記実施例と同様に潜在硬
化型のエポキシ樹脂が予め含浸させられている。ストラ
ンド状の炭素繊維１６は、鉄筋コンクリート柱１０の外
表面に端部同士が相互に接触するようにして、密に捲回
される。FIG. 3 shows another embodiment of the seismic retrofitting method for existing structures according to the present invention. In the embodiment shown in the figure, the seismic retrofit target is a reinforced concrete column 10 having a rectangular cross section as in the above embodiment. Seismic reinforcement of the reinforced concrete columns 10 uses strand-shaped carbon fibers 16 in which single fibers are bundled together. The strand-shaped carbon fiber 16 is previously impregnated with a latent curing type epoxy resin as in the above-mentioned embodiment. The strand-shaped carbon fibers 16 are densely wound on the outer surface of the reinforced concrete column 10 such that their ends are in contact with each other.
【００１９】炭素繊維１６の捲回が終了すると、上記実
施例と同様に通電して発熱させる。この発熱温度が６０
℃以上になると、エポキシ樹脂の潜在硬化性が顕在化さ
れて、樹脂の硬化が開始され、エポキシ樹脂の硬化が終
了すると、コンクリート柱１０の耐震補強が完了する。
このように構成した鉄筋コンクリート柱１０の耐震補強
工法においても上記実施例と同様な作用効果が得られ
る。When the winding of the carbon fiber 16 is completed, electricity is supplied to generate heat as in the above embodiment. This exothermic temperature is 60
When the temperature is higher than or equal to ℃, the latent curing property of the epoxy resin is revealed, and the curing of the resin is started. When the curing of the epoxy resin is completed, the seismic reinforcement of the concrete column 10 is completed.
Even in the seismic retrofitting method of the reinforced concrete column 10 configured as described above, the same operational effect as that of the above-described embodiment can be obtained.
【００２０】なお、上記実施例では、既存構造物として
鉄筋コンクリート柱１０に耐震補強を施す場合を例示し
たが、本発明の実施は、これに限定されることはなく、
例えば、鉄筋コンクリート製の梁，スラブ、煙突などの
塔状構造物の耐震補強に適用することもできる。また、
高張力繊維材は、炭素繊維１２ｂ，１６に限られること
はなく、例えば、アラミド繊維なども使用することがで
き、繊維材の加熱手段も、通電だけでなく、例えば、赤
外線や遠赤外線の照射や、ヒータによる加熱などで行う
こともできる。In the above embodiment, the case where the reinforced concrete column 10 as the existing structure is subjected to the seismic reinforcement is illustrated, but the practice of the present invention is not limited to this.
For example, it can be applied to seismic reinforcement of tower-like structures such as reinforced concrete beams, slabs, and chimneys. Also,
The high-strength fiber material is not limited to the carbon fibers 12b and 16, and, for example, aramid fiber or the like can be used, and the heating means of the fiber material is not limited to energization, but is irradiated with infrared rays or far infrared rays, for example. Alternatively, it can be performed by heating with a heater.
【００２１】さらに、熱硬化性樹脂もエポキシ樹脂に限
ることはなく、例えば、硬化剤と接触することにより硬
化反応が開始されるウレタン樹脂，ＭＭＡ（メチルメタ
クレート樹脂），ポリエステル樹脂，フェノール樹脂な
ども使用することができる。Further, the thermosetting resin is not limited to the epoxy resin, and for example, a urethane resin, MMA (methylmethacrylate resin), a polyester resin, a phenol resin, etc., in which a curing reaction is initiated by contact with a curing agent. Can also be used.
【００２２】[0022]
【発明の効果】以上、実施例で詳細に説明したように、
本発明にかかる既存構造物の耐震補強工法および同工法
に用いる繊維シートによれば、既存構造物に損傷を与え
ることが少なく、しかも、施工能率も向上させることが
できる。As described above in detail in the embodiments,
According to the seismic strengthening method for existing structures and the fiber sheet used for the same according to the present invention, the existing structures are less likely to be damaged, and the construction efficiency can be improved.
【図１】本発明にかかる既存構造物の耐震補強工法の一
実施例を示す工程説明図である。FIG. 1 is a process explanatory view showing an example of an earthquake-proof reinforcing method for an existing structure according to the present invention.
【図２】同工法に使用する繊維シートの背面図である。FIG. 2 is a rear view of the fiber sheet used in the method.
【図３】本発明にかかる既存構造物の耐震補強工法の他
の実施例を示す施工状態の説明図である。FIG. 3 is an explanatory view of a construction state showing another embodiment of the seismic strengthening method for existing structures according to the present invention.
１０ 鉄筋コンクリート柱（既存構造物） １２ 繊維シート １２ａ 繊維担持体 １２ｂ 炭素繊維（高張力繊維材） １２ｃ 潜在硬化型エポキシ樹脂 １６ ストランド状炭素繊維 10 Reinforced concrete columns (existing structures) 12 fiber sheets 12a Fiber support 12b Carbon fiber (high tension fiber material) 12c Latent curable epoxy resin 16 Stranded carbon fiber
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｅ０４Ｈ 9/02 Ｅ０４Ｈ 9/02 // Ｂ２９Ｋ 105:08 Ｂ２９Ｋ 105:08 307:04 307:04 (72)発明者 小川 晴果 東京都清瀬市下清戸４−640 株式会社 大林組技術研究所内 (72)発明者 三谷 一房 東京都清瀬市下清戸４−640 株式会社 大林組技術研究所内 (72)発明者 川原 正雄 埼玉県川越市南台１丁目10番地４ 株式 会社ショックベトン・ジャパン内 (56)参考文献 特開 平３−224966（ＪＰ，Ａ) 特開 平５−332032（ＪＰ，Ａ) 特開 平４−360944（ＪＰ，Ａ) 特開 平６−206272（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) E04G 23/02 B29C 63/03 B32B 5/28 C08K 9/10 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI E04H 9/02 E04H 9/02 // B29K 105: 08 B29K 105: 08 307: 04 307: 04 (72) Inventor Haruka Ogawa 4-640 Shimo-Seido, Kiyose-shi, Tokyo Inside the Obayashi Institute of Technology (72) Inventor Ichibo Mitani 4-640 Shimo-Seido, Kiyose-shi, Tokyo Inside the Ohbayashi Institute of Technology (72) Inventor Masao Kawahara 1-chome Minamidai, Kawagoe, Saitama 10 Address 4 Within Shock Beton Japan Co., Ltd. (56) Reference JP-A-3-224966 (JP, A) JP-A-5-332032 (JP, A) JP-A-4-360944 (JP, A) JP Flat 6-206272 (JP, A) (58) Fields surveyed (Int.Cl. 7 , DB name) E04G 23/02 B29C 63/03 B32B 5/28 C08K 9/10
Claims (2)
高張力繊維材に熱硬化性樹脂を含浸させて貼付するか、
または、捲回し、その後に前記熱硬化性樹脂を硬化させ
る既存構造物の耐震補強工法において、 前記熱硬化性樹脂は、エポキシ樹脂主剤と、マイクロカ
プセル膜に包囲された硬化剤とからなる潜在硬化型のも
ので構成し、前記既存構造物に前記高張力繊維材の貼付
または捲回が完了した後に、６０℃以上の温度で加熱し
て、前記マイクロカプセル膜を溶融させて、前記熱硬化
性樹脂の硬化を開始させることを特徴とする既存構造物
の耐震補強工法。1. A high-strength fiber material such as carbon fiber impregnated with a thermosetting resin is attached to the outer surface of an existing structure, or
Alternatively , in a seismic retrofit construction method of an existing structure in which the thermosetting resin is wound and then cured, the thermosetting resin is a latent curing agent including an epoxy resin main agent and a curing agent surrounded by a microcapsule film. After the application or winding of the high-strength fiber material to the existing structure is completed, it is heated at a temperature of 60 ° C. or higher to melt the microcapsule film, A seismic retrofitting method for existing structures, characterized by starting the hardening of the thermosetting resin.
浸させて貼付される繊維シートであって、 前記繊維シートは、メッシュ状の繊維担持体と、 前記繊維担持体の一面に止着され、一方向に引き揃えら
れた炭素繊維などの高張力長繊維とを備え、 前記熱硬化性樹脂は、エポキシ樹脂主剤と、マイクロカ
プセル膜に包囲された硬化剤とからなる潜在硬化型のも
のであって、前記既存構造物への貼付が完了した後に、
６０℃以上の温度で加熱して、前記マイクロカプセル膜
を溶融させて、前記熱硬化性樹脂の硬化を開始させるこ
とを特徴とする既存構造物の耐震補強工法に用いる繊維
シート。2. A fiber sheet, which is attached by impregnating an outer surface of an existing structure with a thermosetting resin , the fiber sheet comprising a mesh-shaped fiber carrier and one surface of the fiber carrier. And a high-strength long fiber such as carbon fibers aligned in one direction, wherein the thermosetting resin is a latent curing type consisting of an epoxy resin base and a curing agent surrounded by a microcapsule film. Which, after being attached to the existing structure,
A fiber sheet used in a seismic retrofitting method of an existing structure, characterized in that the microcapsule film is melted by heating at a temperature of 60 ° C. or higher to start the hardening of the thermosetting resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32450395A JP3527341B2 (en) | 1995-12-13 | 1995-12-13 | Seismic retrofitting method for existing structures and fiber sheet used in the method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32450395A JP3527341B2 (en) | 1995-12-13 | 1995-12-13 | Seismic retrofitting method for existing structures and fiber sheet used in the method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09158495A JPH09158495A (en) | 1997-06-17 |
| JP3527341B2 true JP3527341B2 (en) | 2004-05-17 |
Family
ID=18166537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32450395A Expired - Fee Related JP3527341B2 (en) | 1995-12-13 | 1995-12-13 | Seismic retrofitting method for existing structures and fiber sheet used in the method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3527341B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327153A (en) * | 2016-04-28 | 2017-11-07 | 卡本复合材料（天津）有限公司 | A kind of carbon fiber mesh is to pillar resistance to compression reinforcement means |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050076596A1 (en) * | 2001-09-25 | 2005-04-14 | Structural Quality Assurance, Inc. | Reinforcement material and reinforcement structure of structure and method of designing reinforcement material |
| KR20030038135A (en) * | 2001-11-08 | 2003-05-16 | 홍원기 | A concrete construction method using carbon fiber mold |
| KR100498247B1 (en) * | 2002-09-02 | 2005-07-01 | 김원기 | Seismic upgrading method of concrete column and concrete column reinforced thereby |
| CN104453267A (en) * | 2013-09-18 | 2015-03-25 | 福州大学 | Structure and manufacturing method of CFRP (carbon fiber reinforced plastic) sheet reinforced tenon-and-mortise-structure extension wooden beam |
| JP6331526B2 (en) * | 2014-03-14 | 2018-05-30 | オムロン株式会社 | Resin composition and cured product thereof |
| JP5974157B1 (en) * | 2015-12-02 | 2016-08-23 | 株式会社ブルーム | Reinforced structure of reinforced concrete structure |
| CN113882705B (en) * | 2021-09-24 | 2023-01-20 | 北京工业大学 | Reinforcement Structure of Reinforced Concrete Shear Wall |
-
1995
- 1995-12-13 JP JP32450395A patent/JP3527341B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327153A (en) * | 2016-04-28 | 2017-11-07 | 卡本复合材料（天津）有限公司 | A kind of carbon fiber mesh is to pillar resistance to compression reinforcement means |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09158495A (en) | 1997-06-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5326410A (en) | Method for reinforcing structural supports and reinforced structural supports | |
| JP3527341B2 (en) | Seismic retrofitting method for existing structures and fiber sheet used in the method | |
| JPH05269726A (en) | Reinforcing material for structure of civil engineering structure | |
| KR100417892B1 (en) | Flat strip lamella for reinforcing building components and method for placing a flat strip lamella on a component | |
| KR19990067233A (en) | Repair reinforcement method of existing structures and anisotropic fabrics used here | |
| JPS6115881B2 (en) | ||
| TW201943561A (en) | Reinforcing laminate material for structure, reinforcing method, and reinforcing structure | |
| JP2717791B2 (en) | Building reinforcement method using carbon fiber reinforced plastic plate | |
| JP3630380B2 (en) | Repair and reinforcement method for existing structures | |
| JP3806252B2 (en) | Reinforcing method of concrete structure with reinforcing fiber sheet | |
| JP4272781B2 (en) | Seismic reinforcement method | |
| JP3779806B2 (en) | Method for reinforcing concrete columnar body | |
| JP3139348B2 (en) | Manufacturing method of fiber reinforced mortar / concrete | |
| JP2826742B2 (en) | Reinforcement method of building using fiber reinforced plastic plate | |
| JPH09296615A (en) | Repairing and reinforcing method for structure | |
| JP2000167856A (en) | Heater for thermally press-bonding prepreg and method for reinforcing concrete structural material using this heater | |
| JP2869931B2 (en) | Unidirectionally reinforced fiber sheet and method for producing the same | |
| JP3868059B2 (en) | Waterproofing method using photo-curable prepreg sheet | |
| JP3246297B2 (en) | Construction method of anticorrosion lining | |
| JP3220540B2 (en) | Concrete repair method using unidirectional reinforced fiber sheet | |
| JP2000265680A (en) | Seismic reinforcement method | |
| JPH11286052A (en) | Postcurable resin pipe | |
| JP2545259B2 (en) | Method of strengthening structures with carbon fiber reinforced plastic plates | |
| JPH02150456A (en) | Fiber-reinforced plastic sheets, civil engineering construction materials, and reinforcement methods for civil engineering buildings | |
| JP6633426B2 (en) | Method for joining precast concrete structural members |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20031215 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20040120 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20040219 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313117 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| LAPS | Cancellation because of no payment of annual fees |