JP2000054644A - Reinforcing construction method - Google Patents

Reinforcing construction method

Info

Publication number
JP2000054644A
JP2000054644A JP10226887A JP22688798A JP2000054644A JP 2000054644 A JP2000054644 A JP 2000054644A JP 10226887 A JP10226887 A JP 10226887A JP 22688798 A JP22688798 A JP 22688798A JP 2000054644 A JP2000054644 A JP 2000054644A
Authority
JP
Japan
Prior art keywords
resin
lead frame
sheet
unidirectional sheet
unidirectional
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP10226887A
Other languages
Japanese (ja)
Other versions
JP3899447B2 (en
Inventor
Osamu Tanaka
治 田中
Fumio Yamamoto
史夫 山本
Masayuki Shimizu
正幸 清水
Takao Ota
隆雄 太田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shinto Paint Co Ltd
Sumitomo Bakelite Co Ltd
Original Assignee
Shinto Paint Co Ltd
Sumitomo Bakelite Co Ltd
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 Shinto Paint Co Ltd, Sumitomo Bakelite Co Ltd filed Critical Shinto Paint Co Ltd
Priority to JP22688798A priority Critical patent/JP3899447B2/en
Publication of JP2000054644A publication Critical patent/JP2000054644A/en
Application granted granted Critical
Publication of JP3899447B2 publication Critical patent/JP3899447B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To provide a structure reinforcing technique for pasting a unidirectional sheet using aramid fiber to a structure for impregnation and hardening of thermosetting resin, wherein the thermosetting resin is hardened in a short time, conventional construction is improved and a construction period is shortened. SOLUTION: After a unidirectional sheet 10 formed of aramid fiber 1 is pasted to the outer surface of an existing structure, thermosetting resin is applied to the unidirectional sheet 10 for impregnation and hardening. When the unidirectional sheet 10 is pasted in layers, a conductive lead frame 3 is held between the layers of the unidirectional sheet 10 to carry a current therein for heat generation, so that the resin is hardened to reinforce the structure.

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】本発明は補強工法に関し、詳
しくは、既存のコンクリート柱などに補強繊維を巻き付
け、樹脂を塗布し、樹脂を短時間に硬化させて、工期の
短縮を図る耐震補強工法に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing method, and more particularly, to an earthquake-resistant reinforcing method for winding a reinforcing fiber around an existing concrete column or the like, applying a resin, curing the resin in a short time, and shortening a construction period. It is about.

【0002】[0002]

【従来の技術】従来、炭素繊維やアラミド繊維を用いる
耐震補強工法は、それら繊維の一方向性シートを作製
し、既存の補強を要するコンクリート柱などの構造物に
巻き付け、常温硬化の熱硬化性樹脂を塗布含浸させ、常
温で放置硬化させる方法がとられている。従来の工法
は、熱硬化性樹脂として、エポキシ樹脂、ビニルエステ
ル樹脂、不飽和ポリエステル樹脂、フェノール樹脂等が
使用できるものの、常温硬化の点で、事実上エポキシ樹
脂に限定され、硬化までの日数は、外気温によって3日
から1週間ほど要し、工期が長いという欠点がある。
2. Description of the Related Art Conventionally, a seismic retrofitting method using carbon fiber or aramid fiber is to prepare a unidirectional sheet of the fiber and wind it around a structure such as a concrete column requiring reinforcement. A method of applying and impregnating a resin and leaving it to cure at room temperature is employed. The conventional construction method can use epoxy resin, vinyl ester resin, unsaturated polyester resin, phenol resin, etc. as thermosetting resin, but in terms of room temperature curing, it is practically limited to epoxy resin, and the number of days until curing is There is a disadvantage that it takes about 3 days to 1 week depending on the outside temperature, and the construction period is long.

【0003】[0003]

【発明が解決しようとする課題】したがって、本発明の
目的は、アラミド繊維を用いた一方向性シートを構造物
に貼付して、熱硬化性樹脂を含浸硬化させる補強工法に
おいて、熱硬化性樹脂を短時間で硬化させ、上記従来の
施工性を改良し工期の短縮を図る構造物の補強工法を提
供することである。
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a reinforcing method in which a unidirectional sheet using aramid fibers is attached to a structure and impregnated and cured with a thermosetting resin. The present invention aims to provide a method for reinforcing a structure in which the above-mentioned conventional workability is improved and the construction period is shortened.

【0004】[0004]

【課題を解決するための手段】かかる実情において、本
発明者らは鋭意検討を行った結果、アラミド繊維を用い
た一方向性シートを構造物に取付けた後、該シートに熱
硬化性樹脂を塗布含浸させ、次いで、一方向性シートを
重ねて貼付する際、前記一方向性シート間に導電性リー
ドフレームを挟み、これに通電して、該通電による発熱
で熱硬化性樹脂を短時間で硬化させれば、工期の短縮が
図れることを見出し、本発明を完成するに至った。
Under these circumstances, the present inventors have conducted intensive studies. As a result, after attaching a unidirectional sheet using aramid fiber to a structure, a thermosetting resin is applied to the sheet. When applying and impregnating, then, when stacking and applying a unidirectional sheet, a conductive lead frame is sandwiched between the unidirectional sheets, and electricity is supplied to the conductive lead frame. It has been found that curing can shorten the construction period, and the present invention has been completed.

【0005】すなわち、本発明は、既存構造物の外表面
にアラミド繊維からなる一方向性シートを貼付した後、
該一方向性シートに熱硬化性樹脂を塗布して含浸硬化さ
せる補強工法において、前記一方向性シートを重ねて貼
付する際、該一方向性シート間に導電性のリードフレー
ムを挟み込み、前記リードフレームに電流を流して、発
熱させ、樹脂を硬化させて構造物を補強する補強工法を
提供するものである。
That is, according to the present invention, after a unidirectional sheet made of aramid fiber is attached to the outer surface of an existing structure,
In the reinforcing method in which a thermosetting resin is applied to the one-way sheet and impregnated and cured, when the one-way sheet is overlapped and adhered, a conductive lead frame is sandwiched between the one-way sheets and the lead is inserted. An object of the present invention is to provide a reinforcing method for reinforcing a structure by flowing an electric current to a frame to generate heat and to cure a resin.

【0006】[0006]

【発明の実施の形態】本発明において、アラミド繊維か
らなる一方向性シートとは、少なくとも経糸にアラミド
繊維を用いた織布を言う。その外観の概略は、図1に示
すように、経糸1にアラミド繊維を用いた一方向性織布
シート10であって、経糸1は左右方向に通されて形成
される。図1において、隙間は経糸の単位幅当たりの打
ち込み本数によって変わる。また、緯糸2は、経糸1を
編み込みながら上下方向に通され、横に互いに粗く形成
される有機繊維の連続糸である。経糸に用いられるアラ
ミド繊維は強度を持たせるために使用される。
BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, a unidirectional sheet made of aramid fiber means a woven fabric using aramid fiber for at least a warp. As shown in FIG. 1, an outline of the appearance is a unidirectional woven fabric sheet 10 using aramid fibers for the warp yarns 1, and the warp yarns 1 are formed to pass in the left-right direction. In FIG. 1, the gap varies depending on the number of warp yarns per unit width. Further, the weft 2 is a continuous yarn of organic fibers that is passed through in the up-down direction while knitting the warp 1 and is formed roughly horizontally. Aramid fibers used for warp are used to give strength.

【0007】アラミド繊維としては、特に制限されない
が、引張強度15g/d以上、ヤング率500g/d以
上(dはデニールを意味する。)のアラミド繊維が好ま
しい。また、アラミド繊維の撚り回数はできるだけ少な
いのが好ましく、その撚り回数は5〜50回/mであ
る。撚り回数が大きくなると、シートのヤング率が低下
し、耐震補強の目的であるせん断補強や曲げ補強効果が
小さくなって、好ましくない。一方向性シートの目付
は、緯糸の重量を除いて、通常200〜1000g/m
2 である。経糸の単位巾あたりの打ち込み本数は、用い
るアラミド繊維の太さと前記一方向性シートの目付から
容易に決定される。
The aramid fiber is not particularly limited, but is preferably an aramid fiber having a tensile strength of 15 g / d or more and a Young's modulus of 500 g / d or more (d means denier). The number of twists of the aramid fiber is preferably as small as possible, and the number of twists is 5 to 50 times / m. If the number of twists increases, the Young's modulus of the sheet decreases, and the effect of shear reinforcement or bending reinforcement, which is the purpose of seismic reinforcement, decreases, which is not preferable. The basis weight of the unidirectional sheet is usually 200 to 1000 g / m, excluding the weight of the weft.
2 The number of warp yarns per unit width is easily determined from the thickness of the aramid fiber used and the basis weight of the unidirectional sheet.

【0008】緯糸に使用される有機繊維としては、特に
制限されないが、通常のナイロン、ポリエステル、綿、
アラミド繊維が使用できる。
[0008] The organic fibers used for the weft are not particularly limited, but include ordinary nylon, polyester, cotton,
Aramid fibers can be used.

【0009】本発明におけるリードフレームの材質は、
良導体の金属で、発熱量の大きいものが好ましく、例え
ば、ニッケルクロム合金、鉄クロム合金が挙げられる。
また、その形状としては、特に制限されないが、例え
ば、前記合金の薄板を図2に示すような形状に打ち抜い
たものが使用される。図2(a)は図3の巻きコイル
(模式図)のA−B間を拡大した平面図であり、図2
(b)は図2(a)の右側面図である。図2において、
リードフレーム3の厚みtは0.05mmから0.50
mmの範囲が好ましい。その厚みが厚いと、柔軟性がな
くなりコンクリート柱などに巻き付けにくくなる。リー
ドフレームの横巾cはアラミド繊維からなる一方向性シ
ートの巾と等しいか、あるいはその巾より1cm程短く
することが好ましい。リードフレームの線巾aは1〜5
mmである。また、打ち抜き巾bは3〜8mmである。
打ち抜き巾bが狭すぎると、このリードフレームの上下
に位置するアラミド繊維からなる一方向性シートの接着
を阻害する恐れがある。なぜなら、この隙間の熱硬化性
樹脂が上下のアラミド繊維からなる一方向性シートを接
着させるからである。また、打ち抜き巾bが広すぎる
と、樹脂を硬化させるために通電したとき、樹脂を均一
に加熱できない恐れがある。丸穴4は、かかる形状のリ
ードフレーム10を作製する際、例えば、ニッケルクロ
ム合金や鉄クロム合金の薄い板を送りだすために利用さ
れる穴である。リードフレーム10の両端部5、5は、
図では省略する電極端子に接続され、通電するようにな
っている。
In the present invention, the material of the lead frame is
A good conductor metal having a large calorific value is preferable, and examples thereof include a nickel chromium alloy and an iron chromium alloy.
The shape is not particularly limited. For example, a thin sheet of the alloy is punched into a shape as shown in FIG. FIG. 2A is an enlarged plan view between AB of the wound coil (schematic diagram) of FIG.
FIG. 2B is a right side view of FIG. In FIG.
The thickness t of the lead frame 3 is 0.05 mm to 0.50
The range of mm is preferred. If the thickness is large, the film loses flexibility and is hardly wound around a concrete pillar or the like. It is preferable that the width c of the lead frame is equal to the width of the unidirectional sheet made of aramid fiber, or shorter than the width by about 1 cm. Lead frame width a is 1-5
mm. The punch width b is 3 to 8 mm.
If the punch width b is too narrow, there is a possibility that the adhesion of the unidirectional sheet made of aramid fibers located above and below the lead frame may be hindered. This is because the thermosetting resin in the gap adheres the unidirectional sheets made of the upper and lower aramid fibers. On the other hand, if the punch width b is too large, the resin may not be uniformly heated when a current is applied to cure the resin. The round hole 4 is a hole used to feed a thin plate of, for example, a nickel-chromium alloy or an iron-chromium alloy when manufacturing the lead frame 10 having such a shape. Both ends 5, 5 of the lead frame 10
In the figure, it is connected to an electrode terminal, which is omitted, and is energized.

【0010】本発明の補強工法の手順について、具体的
に説明する。先ず、アラミド繊維からなる一方向性シー
トを既存構造物の表面と密着保持させるために、例え
ば、コンクリート表面等にプライマーを塗布する。次
に、定長に切断したアラミド繊維からなる一方向性シー
トを巻き付けた後、エポキシ樹脂などの熱硬化性樹脂を
当該シートに塗布含浸させる。その後、導電性リードフ
レームをその上に巻き付けて、さらにエポキシ樹脂など
の熱硬化性樹脂を塗布する。次に、この上から定長に切
断した別の当該一方向性シートを巻き付け、同様の操作
を2、3回繰り返す。熱硬化性樹脂が塗布された補強用
シートに対し、それぞれの導電性リードフレームの両端
部に電極端子を接続し電流を流し、発熱させて、樹脂を
硬化させる。更に、必要に応じて、構造物のせん断補強
及び曲げ補強効果をより向上させるために、硬化したシ
ートの上にプライマーを塗布し、前記の同様の操作を繰
り返して、アラミド繊維からなる一方向性シートの必要
枚数を巻き付ける。
The procedure of the reinforcing method according to the present invention will be specifically described. First, in order to hold the unidirectional sheet made of aramid fiber in close contact with the surface of the existing structure, for example, a primer is applied to the concrete surface or the like. Next, after winding a unidirectional sheet made of aramid fiber cut to a fixed length, the sheet is coated and impregnated with a thermosetting resin such as an epoxy resin. Thereafter, a conductive lead frame is wound thereon, and a thermosetting resin such as an epoxy resin is further applied. Next, another unidirectional sheet cut into a fixed length is wound from above, and the same operation is repeated a few times. Electrode terminals are connected to both ends of each conductive lead frame on the reinforcing sheet to which the thermosetting resin is applied, and an electric current is applied to generate heat, thereby curing the resin. Further, if necessary, in order to further improve the effect of shear reinforcement and bending reinforcement of the structure, apply a primer on the cured sheet, and repeat the same operation as described above to form a unidirectional fiber made of aramid fiber. Wind the required number of sheets.

【0011】構造物としては、特に制限されず、橋梁、
タンク及び鉄塔などの土木構造物;道路構造物;河川、
港湾又は海洋構造物;建築構造物などの強度が要求され
る部位であり、特に、大地震対策などで補強が要求され
る既存のコンクリート柱などが好適である。
The structure is not particularly limited, and may be a bridge,
Civil structures such as tanks and steel towers; road structures; rivers,
Port or marine structure; a site where strength is required, such as a building structure, and in particular, an existing concrete column or the like which is required to be reinforced in response to a large earthquake or the like is suitable.

【0012】前記一方向性シートに塗布される熱硬化性
樹脂には、フェノール樹脂、エポキシ樹脂、ポリウレタ
ン樹脂、不飽和ポリエステル樹脂、ビニルエステル樹脂
及びポリイミド樹脂等があるが、強度、取り扱いの容易
さ、コストなどから、エポキシ樹脂、フェノール樹脂が
好ましい。本発明において、補強用シートに塗布させる
樹脂量は、補強用シートに対して80〜150%、好ま
しくは100〜140%である。塗布量が少ないと加熱
時に繊維内に樹脂が十分に浸透せず、充分な補強効果を
得ることができず、多すぎると使用する樹脂量が不必要
に増加して不経済である。
The thermosetting resin applied to the one-way sheet includes a phenol resin, an epoxy resin, a polyurethane resin, an unsaturated polyester resin, a vinyl ester resin, a polyimide resin, and the like. Epoxy resins and phenol resins are preferred from the viewpoint of cost and the like. In the present invention, the amount of resin applied to the reinforcing sheet is from 80 to 150%, preferably from 100 to 140%, based on the reinforcing sheet. If the coating amount is small, the resin does not sufficiently penetrate into the fiber when heated, and a sufficient reinforcing effect cannot be obtained. If the coating amount is too large, the amount of resin used increases unnecessarily, which is uneconomical.

【0013】通電による加熱保持温度、硬化時間は、使
用する熱硬化性樹脂の種類や、硬化開始温度等によって
異なり、使用時の条件により適宜決定される。
[0013] The heating and holding temperature and the curing time by energization vary depending on the type of thermosetting resin to be used, the curing start temperature, and the like, and are appropriately determined according to the conditions at the time of use.

【0014】[0014]

【実施例】次に、実施例を挙げて本発明を更に具体的に
説明するが、これは単に例示であって、本発明を制限す
るものではない。 実施例1 経糸にアラミド繊維「トワロンHM」(アクゾノーベル
社製)の3000デニールの繊維を用い、緯糸に500
デニールのポリエステル繊維を使用し、シート巾50c
mで目付量415g/m2 の一方向性シートの織布を作
製した。また、巾(c)49cm、厚み(t)0.1m
mのニッケルクロム合金の板から、打ち抜きで図2に示
す導電性リードフレームを作製した(この時、a=3m
m、b=5mm)。はじめに、既存の構造物であるコン
クリート表面にエポキシ樹脂系のプライマーを塗布し、
次に、定長に切断したアラミド繊維からなる一方向性シ
ートを一層巻き付けた。次いで、常温硬化性のエポキシ
樹脂をその上から塗布後、上記導電性リードフレームを
巻き付けた。その上に、さらに当該エポキシ樹脂を塗布
した。次いで、別の定長に切断したアラミド繊維からな
る一方向性シートを巻き付け、さらに当該エポキシ樹脂
を塗布した。リードフレームの両端に電流を流し、発熱
させ、80℃、3時間保持して樹脂を硬化させた。樹脂
硬化後の当該耐震補強シートの引張強度(一方向性シー
ト一層)は61トン重/m、弾性率は10.7トン重/
mm2 であった。
Next, the present invention will be described in more detail with reference to examples, but this is merely an example and does not limit the present invention. Example 1 3000 denier fiber of aramid fiber "Twaron HM" (manufactured by Akzo Nobel) was used for the warp and 500 for the weft.
Using denier polyester fiber, sheet width 50c
A woven fabric of a unidirectional sheet having a basis weight of 415 g / m 2 was prepared at m. Also, width (c) 49 cm, thickness (t) 0.1 m
The lead frame shown in FIG. 2 was fabricated from a nickel-chromium alloy plate of
m, b = 5 mm). First, apply an epoxy resin primer to the concrete surface of the existing structure,
Next, a unidirectional sheet made of aramid fibers cut to a fixed length was further wound. Next, a room temperature-curable epoxy resin was applied thereon, and then the conductive lead frame was wound. The epoxy resin was further applied thereon. Next, a unidirectional sheet made of aramid fiber cut to another fixed length was wound, and the epoxy resin was further applied. A current was applied to both ends of the lead frame to generate heat, and the resin was kept at 80 ° C. for 3 hours to cure the resin. The tensile strength (one-way sheet) of the quake-resistant sheet after curing of the resin is 61 ton / m and the elastic modulus is 10.7 ton / m.
mm 2 .

【0015】実施例2 鉄クロム合金の板から作製したリードフレームを用いた
以外は、実施例1と同様にして行った。樹脂硬化後の当
該耐震補強シートの引張強度は61トン重/m、弾性率
は10.7トン重/mm2 であった。
Example 2 The procedure of Example 1 was repeated, except that a lead frame made of an iron-chromium alloy plate was used. The tensile strength of the earthquake-resistant reinforcing sheet after curing of the resin was 61 ton-weight / m, and the elastic modulus was 10.7 ton-weight / mm 2 .

【0016】比較例1 経糸にアラミド繊維「トワロンHM」(アクゾノーベル
社製)の3000デニールの繊維を用い、緯糸に500
デニールのポリエステル繊維を使用し、シート巾50c
mで目付量415g/m2 の一方向性シートの織布を作
製した。当該一方向性シートをコンクリート柱の表面と
密着保持させるために、コンクリート表面にエポキシ樹
脂系のプライマーを塗布し、次に、定長に切断した当該
一方向性シートを一層巻き付け、常温硬化性のエポキシ
樹脂をその上から塗布した。さらに、別の定長に切断し
た当該一方向性シートを巻き付け、常温硬化性のエポキ
シ樹脂をその上から塗布した後、放置した。完全硬化ま
で約4日間要した。樹脂硬化後の当該耐震補強シートの
引張強度(一方向性シート一層)は60トン重/m、弾
性率は10.5トン重/mm2 であった。
Comparative Example 1 3000 denier fiber of aramid fiber "Twaron HM" (manufactured by Akzo Nobel) was used for the warp and 500 for the weft.
Using denier polyester fiber, sheet width 50c
A woven fabric of a unidirectional sheet having a basis weight of 415 g / m 2 was prepared at m. In order to keep the unidirectional sheet in close contact with the surface of the concrete column, an epoxy resin-based primer is applied to the concrete surface, and then the unidirectional sheet cut to a fixed length is further wrapped, and is cured at room temperature. An epoxy resin was applied over it. Further, the unidirectional sheet cut into another fixed length was wound, and a room-temperature-curable epoxy resin was applied thereon, and then allowed to stand. It took about 4 days to complete cure. The tensile strength (one-way one-layer sheet) of the earthquake-resistant reinforcing sheet after curing of the resin was 60 tons / m, and the elastic modulus was 10.5 tons / mm 2 .

【0017】実施例及び比較例から明らかなように、実
施例1及び実施例2は、従来例の炭素繊維やアラミド繊
維及び熱硬化性樹脂を用いた常温硬化による耐震補強工
法に比較して、硬化までの時間が大幅に短縮できた。
As is clear from the Examples and Comparative Examples, Examples 1 and 2 are compared with the conventional seismic retrofitting method using room temperature curing using carbon fiber, aramid fiber and thermosetting resin. The time to cure was significantly reduced.

【0018】[0018]

【発明の効果】本発明の補強工法では、通電による発熱
で熱硬化性樹脂を短時間で硬化できて、施工に要する工
期を短縮することができる。また、引張強度、弾性率等
の物性において、従来工法のものと同等である。
According to the reinforcing method of the present invention, the thermosetting resin can be cured in a short time by the heat generated by energization, and the construction period required for construction can be shortened. Further, physical properties such as tensile strength and elastic modulus are equivalent to those of the conventional method.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明で用いる一方向性シートの概略図であ
る。
FIG. 1 is a schematic view of a unidirectional sheet used in the present invention.

【図2】(a)は本発明で用いる導電性リードフレーム
の平面図であり、(b)が(a)の右側面図である。
FIG. 2A is a plan view of a conductive lead frame used in the present invention, and FIG. 2B is a right side view of FIG.

【図3】本発明で用いる導電性リードフレームの巻きコ
イルの正面図である。
FIG. 3 is a front view of a wound coil of a conductive lead frame used in the present invention.

【符号の説明】[Explanation of symbols]

1 経糸(アラミド繊維) 2 緯糸 3 導電性リードフレーム 3a 巻きコイルより解かれた導電性リードフレーム 4 丸穴 5 電極端子接続部 10 一方向性シート 31 巻きコイル a リードフレームの線巾 b リードフレームの打ち抜き巾 c リードフレームの横巾 t リードフレームの厚み DESCRIPTION OF SYMBOLS 1 Warp (aramid fiber) 2 Weft 3 Conductive lead frame 3a Conductive lead frame unwound from a winding coil 4 Round hole 5 Electrode terminal connection part 10 Unidirectional sheet 31 Winding coil a Lead frame line width b Lead frame Punch width c Width of lead frame t Thickness of lead frame

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 FI テーマコート゛(参考) B29K 105:08 (72)発明者 山本 史夫 兵庫県尼崎市南塚口町6丁目10番73号 神 東塗料株式会社内 (72)発明者 清水 正幸 東京都品川区東品川2丁目5番8号 住友 ベークライト株式会社内 (72)発明者 太田 隆雄 東京都品川区東品川2丁目5番8号 住友 ベークライト株式会社内 Fターム(参考) 2E176 AA04 BB03 BB29 4F205 AA30 AA36 AA39 AD11 AD16 AD34 AH47 AJ02 AK09 HA06 HA14 HA33 HA35 HA40 HA44 HB01 HC05 HC14 HF05 HF24 HK04 HK05 HK17 HM04 HT07 HT22 HT27 ──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) B29K 105: 08 (72) Inventor Fumio Yamamoto 6-10-73 Minamitsukaguchicho, Amagasaki City, Hyogo Prefecture Shinto Paint (72) Inventor Masayuki Shimizu 2-5-8 Higashishinagawa, Shinagawa-ku, Tokyo Sumitomo Bakelite Co., Ltd. (72) Inventor Takao Ota 2-5-2-8 Higashishinagawa, Shinagawa-ku, Tokyo Sumitomo Bakelite Co., Ltd. F term (reference) 2E176 AA04 BB03 BB29 4F205 AA30 AA36 AA39 AD11 AD16 AD34 AH47 AJ02 AK09 HA06 HA14 HA33 HA35 HA40 HA44 HB01 HC05 HC14 HF05 HF24 HK04 HK05 HK17 HM04 HT07 HT22 HT27

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 既存構造物の外表面にアラミド繊維から
なる一方向性シートを貼付した後、該一方向性シートに
熱硬化性樹脂を塗布して含浸硬化させる補強工法におい
て、前記一方向性シートを重ねて貼付する際、該一方向
性シート間に導電性のリードフレームを挟み込み、前記
リードフレームに電流を流して、発熱させ、樹脂を硬化
させて構造物を補強する補強工法。
1. A reinforcing method in which a unidirectional sheet made of aramid fiber is attached to an outer surface of an existing structure, and a thermosetting resin is applied to the unidirectional sheet and impregnated and cured. A reinforcing method in which a conductive lead frame is sandwiched between the unidirectional sheets when sheets are stacked and adhered, an electric current is applied to the lead frame to generate heat, and the resin is cured to reinforce the structure.
【請求項2】 前記導電性リードフレームの材質が、ニ
ッケルクロム合金又は鉄クロム合金である請求項1記載
の補強工法。
2. The reinforcing method according to claim 1, wherein the material of the conductive lead frame is a nickel chromium alloy or an iron chromium alloy.
JP22688798A 1998-08-11 1998-08-11 Reinforcement method Expired - Fee Related JP3899447B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22688798A JP3899447B2 (en) 1998-08-11 1998-08-11 Reinforcement method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22688798A JP3899447B2 (en) 1998-08-11 1998-08-11 Reinforcement method

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Publication Number Publication Date
JP2000054644A true JP2000054644A (en) 2000-02-22
JP3899447B2 JP3899447B2 (en) 2007-03-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03212568A (en) * 1990-01-17 1991-09-18 Mitsubishi Kasei Corp Reinforcing method for structural member made of concrete
JPH04175528A (en) * 1990-11-06 1992-06-23 Bando Chem Ind Ltd Cylindrical engine mount
JPH06158873A (en) * 1992-11-27 1994-06-07 Sumitomo Chem Co Ltd Reinforcement or repair method for members using carbon-fiber reinforced composite material
JPH08276530A (en) * 1995-04-05 1996-10-22 Sho Bond Constr Co Ltd Method for bonding f-r-p in repair and reinforcing of concrete structure
JP2000033617A (en) * 1998-07-16 2000-02-02 Shinto Paint Co Ltd Reinforcing material and reinforcement technique

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03212568A (en) * 1990-01-17 1991-09-18 Mitsubishi Kasei Corp Reinforcing method for structural member made of concrete
JPH04175528A (en) * 1990-11-06 1992-06-23 Bando Chem Ind Ltd Cylindrical engine mount
JPH06158873A (en) * 1992-11-27 1994-06-07 Sumitomo Chem Co Ltd Reinforcement or repair method for members using carbon-fiber reinforced composite material
JPH08276530A (en) * 1995-04-05 1996-10-22 Sho Bond Constr Co Ltd Method for bonding f-r-p in repair and reinforcing of concrete structure
JP2000033617A (en) * 1998-07-16 2000-02-02 Shinto Paint Co Ltd Reinforcing material and reinforcement technique

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