JP3301288B2 - Reinforcement method for concrete buildings - Google Patents

Reinforcement method for concrete buildings

Info

Publication number
JP3301288B2
JP3301288B2 JP30742595A JP30742595A JP3301288B2 JP 3301288 B2 JP3301288 B2 JP 3301288B2 JP 30742595 A JP30742595 A JP 30742595A JP 30742595 A JP30742595 A JP 30742595A JP 3301288 B2 JP3301288 B2 JP 3301288B2
Authority
JP
Japan
Prior art keywords
sheet
ridge
reinforcing
steel material
steel
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
Application number
JP30742595A
Other languages
Japanese (ja)
Other versions
JPH09144338A (en
Inventor
克朗 小畠
裕一 佐藤
英雄 勝俣
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.)
Obayashi Corp
Original Assignee
Obayashi Corp
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 Obayashi Corp filed Critical Obayashi Corp
Priority to JP30742595A priority Critical patent/JP3301288B2/en
Publication of JPH09144338A publication Critical patent/JPH09144338A/en
Application granted granted Critical
Publication of JP3301288B2 publication Critical patent/JP3301288B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00Working measures on existing buildings
    • E04G23/02Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218Increasing or restoring the load-bearing capacity of building construction elements
    • E04G2023/0251Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements
    • E04G2023/0262Devices specifically adapted for anchoring the fiber reinforced plastic elements, e.g. to avoid peeling off

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】この発明は、RC造やSRC
造などの既存のコンクリート建造物を補強して耐震性を
高める補強工法に関し、とくに補強材として高強度繊維
シートを用いる技術に関する。
BACKGROUND OF THE INVENTION The present invention relates to an RC structure and an SRC
The present invention relates to a method of reinforcing an existing concrete structure such as a building to enhance earthquake resistance, and more particularly to a technique using a high-strength fiber sheet as a reinforcing material.

【0002】[0002]

【従来の技術】既存のコンクリート建造物を炭素繊維シ
ートなどの高強度繊維シートを用いて耐震補強する、つ
ぎのような工法が従来から知られている。コンクリート
躯体の表面にエポキシ樹脂などの接着剤を用いて高強度
繊維シートを貼り付ける。すると、その樹脂が自然に貼
り付けた繊維シートに含浸して硬化する。つまり、繊維
シートを樹脂で固めた繊維強化プラスチック(FRP)
シートがコンクリート躯体に密着してこれを被覆した状
態となる。
2. Description of the Related Art Conventionally, the following construction methods have been known in which existing concrete buildings are seismically reinforced using a high-strength fiber sheet such as a carbon fiber sheet. A high-strength fiber sheet is attached to the surface of the concrete body using an adhesive such as epoxy resin. Then, the resin impregnates and hardens the naturally adhered fiber sheet. In other words, fiber reinforced plastic (FRP) in which the fiber sheet is solidified with resin
The sheet comes into close contact with and covers the concrete body.

【0003】なお言うまでもないが、この補強工法では
繊維で強化したプラスチック成形品(FRP成形品)を
得ることが目的ではなく、コンクリート躯体の表面に高
強度繊維シートを貼り付けてしっかりと接着し、その繊
維シートでコンクリート躯体を補強することが目的であ
る。繊維シートをコンクリート躯体表面に強固に接着し
て一体化する目的でエポキシ樹脂などの接着剤を使用す
るが、そうすると自然に樹脂が繊維シートに含浸して硬
化し、普通のFRPシートとほぼ同様な性状となる。そ
こで、前記の目的でコンクリート躯体表面に高強度繊維
シートを樹脂で貼り付けたものを、以下の説明ではFR
Pシートと称することにする。
Needless to say, the purpose of this reinforcing method is not to obtain a plastic molded product (FRP molded product) reinforced with fibers, but to adhere a high-strength fiber sheet to the surface of the concrete body and firmly adhere to it. The purpose is to reinforce the concrete body with the fiber sheet. An adhesive such as an epoxy resin is used for the purpose of firmly bonding the fiber sheet to the concrete body surface and integrating it, but then the resin naturally impregnates and cures the fiber sheet, which is almost the same as an ordinary FRP sheet. Properties. Therefore, a high-strength fiber sheet attached to the surface of a concrete skeleton with a resin for the above purpose is referred to as FR in the following description.
It will be referred to as a P sheet.

【0004】前記の補強工法を独立した柱や梁に適用す
る場合には、前記繊維シートで柱や梁の全周を取り巻く
ように貼り付けることが容易であり、そのように全周を
FRPシートで被覆する完全閉鎖型の補強構造であれ
ば、きわめて大きな補強効果が期待できる。
When the above-mentioned reinforcing method is applied to independent columns and beams, it is easy to attach the fiber sheet so as to surround the entire circumference of the columns and beams. If it is a completely closed-type reinforcement structure covered with, an extremely large reinforcement effect can be expected.

【0005】ところが柱や梁が独立しておらず、図5に
示すように、壁や床のパネル部分1と柱や梁の太径部分
2とが一体的に構成され、太径部分2の一部がパネル部
分1から出っ張った凸条部2aをなしているコンクリー
ト建造物の場合は、前記のように柱や梁の全周を前記F
RPシートで完全被覆することはできない。そのため従
来は、太径部分2の一部がパネル部分1から出っ張った
凸条部2aのみを前述のFRPシート3で被覆してい
る。つまり、凸条部2aの表面に例えばエポキシ樹脂を
塗布し、そこに例えば炭素繊維シートを貼り付けると同
時に、エポキシ樹脂を炭素繊維シートに含浸させてFR
Pシート3を貼り付け成形する。
However, the columns and beams are not independent, and as shown in FIG. 5, a panel portion 1 of a wall or a floor and a large-diameter portion 2 of a column or a beam are integrally formed. In the case of a concrete structure in which a part is formed as a convex ridge portion 2a protruding from the panel portion 1, as described above, the entire circumference of the column or the beam is
It cannot be completely covered with RP sheets. Therefore, in the related art, only the protruding ridge portion 2 a in which a part of the large diameter portion 2 protrudes from the panel portion 1 is covered with the above-described FRP sheet 3. That is, for example, an epoxy resin is applied to the surface of the ridge portion 2a and, for example, a carbon fiber sheet is adhered thereto, and at the same time, the carbon fiber sheet is impregnated with the epoxy resin to obtain
The P sheet 3 is attached and molded.

【0006】[0006]

【発明が解決しようとする課題】壁と一体化された柱
や、床と一体化された梁について、図5のようにパネル
部分1から出っ張った凸条部2aの表面のみを上述のF
RPシート3で被覆しただけでは、独立した柱や梁の全
周をFRPシートで取り囲む完全閉鎖型の補強構造に比
べ、その補強効果ははなはだしく頼りないものであっ
た。試験によると、図5のような補強構造では、柱や梁
(太径部分2)が大きなせん断力を受けて撓むと、FR
Pシート3が容易に凸条部2aから剥がれてしまう。つ
まりFRPシート3と凸条部2aの構造的一体性がとぼ
しいために、躯体に作用する荷重があまり大きくない段
階でFRPシート3が剥離してしまい、炭素繊維などが
有する大きな強度をコンクリート躯体の補強に有効に活
かすことができなかった。
As for the column integrated with the wall and the beam integrated with the floor, only the surface of the ridge 2a protruding from the panel portion 1 as shown in FIG.
Just by covering with the RP sheet 3, the reinforcing effect was much less dependable than the completely closed reinforcing structure in which the entire circumference of the independent column or beam is surrounded by the FRP sheet. According to the test, in the reinforcing structure as shown in FIG. 5, when the column or the beam (the large-diameter portion 2) bends under a large shearing force, the FR or the beam is bent.
The P sheet 3 is easily peeled off from the ridge 2a. In other words, since the structural integrity of the FRP sheet 3 and the ridge 2a is poor, the FRP sheet 3 peels off at a stage where the load acting on the skeleton is not so large, and the large strength of the carbon fiber and the like is increased by the concrete skeleton. It could not be used effectively for reinforcement.

【0007】この発明は前述した従来の問題点に鑑みさ
なれたもので、その目的は、壁と一体化された柱や、床
と一体化された梁について、高強度繊維シートを用いて
効果的に補強できるようにしたコンクリート建造物の補
強工法を提供することにある。
[0007] The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to use a high-strength fiber sheet for a column integrated with a wall or a beam integrated with a floor. It is an object of the present invention to provide a method of reinforcing a concrete building which can be reinforced in a concrete manner.

【0008】[0008]

【課題を解決するための手段】この発明では、壁や床の
パネル部分と柱や梁の太径部分とが一体的に構成され、
前記太径部分の一部が前記パネル部分から出っ張った凸
条部をなしているコンクリート建造物について、以下の
要件〜により補強することとした。前記凸条部の
表面に高強度繊維シートを接着剤により貼り付けて、そ
のシートで前記凸条部の表面をほぼ全面的に被覆する。
前記凸条部と前記パネル部分との境界の入隅部に沿う
ように、前記シートの側端部分の上に細長い鋼材をあて
がって、これら鋼材とシートの接合面に介在させた接着
剤で当該鋼材を前記シートに接着する。前記入隅部の
近くの前記凸条部の側面の適宜箇所に固定用棒材を突設
しておき、その固定用棒材が前記シートおよび前記鋼材
を貫通する状態とし、前記固定用棒材により前記鋼材を
前記シート側に押え付けて固定する。
According to the present invention, a panel portion of a wall or a floor and a large diameter portion of a pillar or a beam are integrally formed,
A concrete structure in which a part of the large-diameter portion forms a protruding ridge protruding from the panel portion is reinforced according to the following requirements. A high-strength fiber sheet is adhered to the surface of the ridge with an adhesive, and the sheet covers the surface of the ridge almost completely.
An elongated steel material is applied on the side end portion of the sheet so as to be along the corner at the boundary between the ridge portion and the panel portion, and the bonding is provided between the joining surfaces of the steel material and the sheet.
The steel material is bonded to the sheet with an agent . A fixing bar is protruded at an appropriate position on a side surface of the ridge near the corner, and the fixing bar penetrates the sheet and the steel material. The steel material is pressed against the sheet side and fixed.

【0009】この工法において、前記固定用棒材は、前
記凸条部に植設したアンカーボルトでよい。また前記固
定用棒材として前記凸条部を貫通するPC鋼棒を用い、
その両端部を前記凸条部の両側面にそれぞれ突出させて
もよい。
In this method, the fixing bar may be an anchor bolt implanted in the ridge. In addition, a PC steel rod penetrating the ridge is used as the fixing rod,
The two ends may project from both sides of the ridge.

【0010】また、前記高強度繊維シートとして、炭素
繊維を一方向に敷きならべて布状にし、あらかじめ樹脂
を含浸させて乾燥させて半硬化させたプリプレグを用い
れば、現場での施工作業性が向上する。そしてまた、一
方向タイプの複数枚の前記高強度繊維シートをその繊維
方向を交差させるように重ねて接着することで、補強効
果が向上する。
In addition, if the prepreg, which is made by laying carbon fibers in one direction to form a cloth, impregnated with a resin in advance, and dried and semi-cured as the high-strength fiber sheet, is used, the workability at the site can be improved. improves. Further, the reinforcing effect is improved by overlapping and bonding a plurality of one-way type high-strength fiber sheets so that their fiber directions intersect.

【0011】[0011]

【発明の実施の形態】この発明の第1の実施形態を図1
に示している。このコンクリート建造物は、壁や床のパ
ネル部分1と柱や梁の太径部分2とが一体的に構成さ
れ、太径部分2の一部がパネル部分1から出っ張った凸
条部2aをなしている。そして、凸条部2aの表面に例
えばエポキシ樹脂を塗布し、そこに例えば炭素繊維シー
トを貼り付けると同時に、エポキシ樹脂を炭素繊維シー
トに含浸させてFRPシート3を貼り付け成形する。こ
のとき、炭素繊維を一方向に敷きならべて布状にした一
方向タイプの炭素繊維シートを用い、繊維方向が交差す
るように複数枚の繊維シートを重ねて樹脂で固める。な
お、繊維シートにあらかじめ樹脂を含浸させて乾燥させ
て半硬化させたプリプレグを用いれば、現場での施工性
が向上する。
FIG. 1 shows a first embodiment of the present invention.
Is shown in In this concrete building, a panel portion 1 of a wall or a floor and a large-diameter portion 2 of a column or a beam are integrally formed, and a part of the large-diameter portion 2 forms a protruding ridge portion 2a protruding from the panel portion 1. ing. Then, for example, an epoxy resin is applied to the surface of the ridge portion 2a and, for example, a carbon fiber sheet is attached thereto, and at the same time, the carbon fiber sheet is impregnated with the epoxy resin, and the FRP sheet 3 is attached and formed. At this time, a one-way type carbon fiber sheet in which carbon fibers are laid in one direction to form a cloth is used, and a plurality of fiber sheets are stacked so as to intersect in the fiber direction, and solidified with resin. The use of a prepreg in which the fiber sheet is impregnated with resin in advance, dried and semi-cured improves workability at the site.

【0012】ところで作業手順が前後するが、前記のよ
うに繊維シートを樹脂で貼り付ける工程にさきだって、
凸条部2aとFRPシート3とが強固に接着するよう
に、凸条部2aの表面に適当な下地処理を施す。また凸
条部2aの出隅部を面取りし、鋭い角をなくする。その
後プライマ処理を施す。これら下地処理・面取り処理・
プライマ処理などの前処理は、貼付面の状況に応じて適
宜に実施すればよい。
By the way, before and after the step of attaching the fiber sheet with the resin as described above,
An appropriate base treatment is applied to the surface of the ridge 2a so that the ridge 2a and the FRP sheet 3 are firmly adhered to each other. In addition, the protruding ridge portion 2a is chamfered at the protruding corner to eliminate sharp corners. Thereafter, a primer treatment is performed. These surface treatment, chamfering,
Pretreatment such as primer treatment may be appropriately performed according to the state of the surface to be pasted.

【0013】凸条部2aを被覆するFRPシート3が硬
化したならば、つぎにアンカーボルト4を植設するため
穴をFRPシート3越しに凸条部2aにあける。穴をあ
ける位置は、凸条部2aとパネル部分1との境界の入隅
部の近くの凸条部2aの両側面であり、適宜間隔をおい
て多数あける。その穴にアンカーボルト4を埋め込んで
固定する。
When the FRP sheet 3 covering the ridge portion 2a is hardened, a hole is formed in the ridge portion 2a through the FRP sheet 3 for anchor bolts 4 to be implanted. Holes are formed on both sides of the ridge 2a near the corner at the boundary between the ridge 2a and the panel portion 1, and a large number of holes are formed at appropriate intervals. An anchor bolt 4 is embedded in the hole and fixed.

【0014】つぎに、アンカーボルト4を通すための穴
を多数形成してある細長い鋼板5を凸条部2aの両側面
にあてがう。もちろん鋼板5の穴にアンカーボルト4を
通す。また、鋼板5とFRPシート3の接合面にエポキ
シ樹脂接着剤を介在させ、両者を一体化する。さらに、
アンカーボルト4の先端にナット6を装着して強固に締
めつけ、鋼板5をFRPシート3に強く押しつける。
Next, an elongated steel plate 5 having a large number of holes for passing the anchor bolts 4 is applied to both side surfaces of the ridge 2a. Of course, the anchor bolt 4 is passed through the hole of the steel plate 5. In addition, an epoxy resin adhesive is interposed on the joint surface between the steel plate 5 and the FRP sheet 3 to integrate them. further,
The nut 6 is attached to the tip of the anchor bolt 4 and firmly tightened, and the steel plate 5 is pressed strongly against the FRP sheet 3.

【0015】以上の実施例では、(1)現場での貼り付
け成形により凸条部2aをFRPシート3で被覆する工
程、(2)アンカーボルト4用の穴をあける工程、
(3)アンカーボルト4の植設工程、(4)鋼板5の接
着工程、(5)ナット6による締め付け工程の順とした
が、この発明はこれに限定されるものではなく、さまざ
まな施工手順が考えられ、状況に応じて適切な手順を選
べばよい。例えば(1)→(4)→(2)→(3)→
(5)という手順や、(2)→(1)→(4)→(3)
→(5)という手順でもよい。この場合は、FRPシー
ト3の硬化と鋼板5の接着とを同時進行させることがで
き、凸条部2aとFRPシート3と鋼板5とが樹脂によ
り良好に一体化される。また(1)→(2)→(4)→
(3)→(5)という手順でもよい。
In the above embodiment, (1) a step of covering the ridge portion 2a with the FRP sheet 3 by sticking and forming on site, (2) a step of making a hole for the anchor bolt 4,
(3) An anchor bolt 4 planting process, (4) a steel plate 5 bonding process, and (5) a tightening process using a nut 6 are performed in this order. However, the present invention is not limited to this, and various construction procedures are performed. It is possible to select an appropriate procedure according to the situation. For example, (1) → (4) → (2) → (3) →
Procedure (5) or (2) → (1) → (4) → (3)
→ The procedure of (5) may be used. In this case, the hardening of the FRP sheet 3 and the adhesion of the steel plate 5 can proceed simultaneously, and the ridge 2a, the FRP sheet 3 and the steel plate 5 are better integrated with the resin. (1) → (2) → (4) →
The procedure of (3) → (5) may be used.

【0016】図2はこの発明の第2の実施形態を示して
いる。これは、図1の例におけるアンカーボルト4に代
えて、凸条部2aを貫通するPC鋼棒7で両側の鋼板5
を押えつける構成としている。PC鋼棒7の両端がFR
Pシート3と鋼板5を貫通して突出し、その両端にナッ
ト6を装着して強固に締めつける。図1の実施例ではア
ンカーボルト4の植設強度が重要になるが、図2の実施
例ではその心配がない。
FIG. 2 shows a second embodiment of the present invention. This is because, instead of the anchor bolt 4 in the example of FIG. 1, the steel plates 5 on both sides are provided by PC steel bars 7 penetrating the ridges 2a.
Is held down. Both ends of PC steel bar 7 are FR
It protrudes through the P sheet 3 and the steel plate 5, and nuts 6 are attached to both ends thereof and firmly tightened. Although the planting strength of the anchor bolts 4 is important in the embodiment of FIG. 1, there is no concern in the embodiment of FIG.

【0017】図3は第3の実施形態を示している。これ
は、図2の例における鋼板5を山型鋼5aに変更してい
る。図4は第4の実施形態を示している。これは、図2
の例における鋼板5を溝型鋼5bに変更している。いず
れも、型鋼5a・5bの一面でFRPシート3を凸条部
2a側に押え付け、他の一面をパネル部分1にあてがっ
ている。型鋼5a・5bのほうが帯状鋼板5より高強度
なので好ましい。
FIG. 3 shows a third embodiment. This changes the steel plate 5 in the example of FIG. 2 to an angle steel 5a. FIG. 4 shows a fourth embodiment. This is shown in FIG.
Is changed to the channel steel 5b. In each case, the FRP sheet 3 is pressed against the ridge 2a on one side of the section steels 5a and 5b, and the other side is applied to the panel portion 1. The shape steels 5a and 5b are preferable because they have higher strength than the strip-shaped steel plate 5.

【0018】なお以上の実施例では、凸条部2aの表面
に接着性の樹脂により繊維シートを貼り付けると同時
に、その樹脂を繊維シートに含浸させることで、繊維シ
ートを樹脂で固めてFRPシート化しているが、この発
明はこれに限定されず、FRP化をはからずにコンクリ
ート表面に繊維シートを単純に接着するだけでもよい。
In the above embodiment, the fiber sheet is adhered to the surface of the ridge portion 2a with an adhesive resin, and at the same time, the resin is impregnated into the fiber sheet. Although the present invention is not limited to this, the fiber sheet may be simply adhered to the concrete surface without using the FRP.

【0019】[0019]

【発明の効果】この発明では、壁と一体化された柱や、
床と一体化された梁について、その凸条部のほぼ全面を
被覆するように高強度繊維シートを接着するだけでな
く、そのシートの側端部分を細長い鋼材で押え付けて固
定用棒材によりコンクリート躯体に強固に固定するの
で、補強用の高強度繊維シートとコンクリート躯体との
構造的一体性が向上し、繊維シートがコンクリート表面
から剥離しにくくなり、繊維シートの強度を有効に活用
してコンクリート建造物を効果的に補強できる。
According to the present invention, a pillar integrated with a wall,
For the beam integrated with the floor, not only is a high-strength fiber sheet adhered so as to cover almost the entire surface of the protruding ridge, but also the side end of the sheet is pressed with an elongated steel material and a fixing rod is used. Because it is firmly fixed to the concrete frame, the structural integrity of the high-strength fiber sheet for reinforcement and the concrete frame is improved, the fiber sheet is less likely to peel from the concrete surface, and the strength of the fiber sheet is effectively utilized. Concrete buildings can be effectively reinforced.

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

【図1】この発明の第1実施例の概略図である。FIG. 1 is a schematic diagram of a first embodiment of the present invention.

【図2】この発明の第2実施例の概略図である。FIG. 2 is a schematic view of a second embodiment of the present invention.

【図3】この発明の第3実施例の概略図である。FIG. 3 is a schematic view of a third embodiment of the present invention.

【図4】この発明の第4実施例の概略図である。FIG. 4 is a schematic view of a fourth embodiment of the present invention.

【図5】従来の補強構造の概略図である。FIG. 5 is a schematic view of a conventional reinforcing structure.

【符号の説明】[Explanation of symbols]

1 壁や床のパネル部分 2 柱や梁の太径部分 2a 凸条部 3 FRPシート 4 アンカーボルト 5 鋼板 5a 山型鋼 5b 溝型鋼 6 ナット 7 PC鋼棒 DESCRIPTION OF SYMBOLS 1 Panel part of wall and floor 2 Thick part of pillar and beam 2a Convex ridge 3 FRP sheet 4 Anchor bolt 5 Steel plate 5a Angle steel 5b Channel steel 6 Nut 7 PC steel bar

───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平5−93463(JP,A) (58)調査した分野(Int.Cl.7,DB名) E04G 23/02 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-5-93463 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) E04G 23/02

Claims (5)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 壁や床のパネル部分と柱や梁の太径部分
とが一体的に構成され、前記太径部分の一部が前記パネ
ル部分から出っ張った凸条部をなしているコンクリート
建造物について、以下の要件〜により補強すること
を特徴とする補強工法。前記凸条部の表面に高強度繊
維シートを接着剤により貼り付けて、そのシートで前記
凸条部の表面をほぼ全面的に被覆する。前記凸条部と
前記パネル部分との境界の入隅部に沿うように、前記シ
ートの側端部分の上に細長い鋼材をあてがって、これら
鋼材とシートの接合面に介在させた接着剤で当該鋼材を
前記シートに接着する。前記入隅部の近くの前記凸条
部の側面の適宜箇所に固定用棒材を突設しておき、その
固定用棒材が前記シートおよび前記鋼材を貫通する状態
とし、前記固定用棒材により前記鋼材を前記シート側に
押え付けて固定する。
1. A concrete structure in which a panel portion of a wall or a floor and a large-diameter portion of a column or a beam are integrally formed, and a part of the large-diameter portion forms a protruding ridge protruding from the panel portion. A reinforcing method characterized in that an object is reinforced according to the following requirements. A high-strength fiber sheet is adhered to the surface of the ridge with an adhesive, and the sheet covers the surface of the ridge almost completely. Applying an elongated steel material on the side edge portion of the sheet so as to be along the corner at the boundary between the ridge portion and the panel portion ,
The steel material is bonded to the sheet with an adhesive interposed at the joint surface between the steel material and the sheet . A fixing bar is protruded at an appropriate position on the side surface of the ridge near the corner, and the fixing bar penetrates the sheet and the steel material. The steel material is pressed against the sheet side and fixed.
【請求項2】 請求項1において、前記固定用棒材は、
前記凸条部に植設したアンカーボルトであることを特徴
とするコンクリート建造物の補強工法。
2. The fixing rod according to claim 1, wherein
A method of reinforcing a concrete building, wherein the method is an anchor bolt planted in the ridge.
【請求項3】 請求項1において、前記固定用棒材は、
前記凸条部を貫通するPC鋼棒であり、その両端部が前
記凸条部の両側面にそれぞれ突出していることを特徴と
するコンクリート建造物の補強工法。
3. The fixing rod according to claim 1, wherein:
A method for reinforcing a concrete building, wherein the steel bar is a PC steel rod penetrating the ridge, and both ends of the steel bar protrude from both side surfaces of the ridge.
【請求項4】 請求項1において、前記高強度繊維シー
トとして炭素繊維を一方向に敷きならべて布状にし、あ
らかじめ樹脂を含浸させて乾燥させて半硬化させたプリ
プレグを用いることを特徴とするコンクリート建造物の
補強工法。
4. The prepreg according to claim 1, wherein the high-strength fiber sheet is made of a prepreg that is laid in one direction on a carbon fiber to form a cloth, impregnated with a resin in advance, dried and semi-cured. Reinforcement method for concrete buildings.
【請求項5】 請求項1において、一方向タイプの複数
枚の前記高強度繊維シートをその繊維方向を交差させる
ように重ねて接着することを特徴とするコンクリート建
造物の補強工法。
5. The method for reinforcing a concrete building according to claim 1, wherein a plurality of one-way type high-strength fiber sheets are overlapped and bonded so that their fiber directions cross each other.
JP30742595A 1995-11-27 1995-11-27 Reinforcement method for concrete buildings Expired - Lifetime JP3301288B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP30742595A JP3301288B2 (en) 1995-11-27 1995-11-27 Reinforcement method for concrete buildings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP30742595A JP3301288B2 (en) 1995-11-27 1995-11-27 Reinforcement method for concrete buildings

Publications (2)

Publication Number Publication Date
JPH09144338A JPH09144338A (en) 1997-06-03
JP3301288B2 true JP3301288B2 (en) 2002-07-15

Family

ID=17968912

Family Applications (1)

Application Number Title Priority Date Filing Date
JP30742595A Expired - Lifetime JP3301288B2 (en) 1995-11-27 1995-11-27 Reinforcement method for concrete buildings

Country Status (1)

Country Link
JP (1) JP3301288B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008261219A (en) * 2008-06-27 2008-10-30 Ohbayashi Corp Member reinforcing structure and reinforcing method

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2302790A1 (en) * 1997-09-16 1999-03-25 Nippon Steel Corporation Structure for reinforcing concrete member and reinforcing method
JP4770300B2 (en) * 2004-07-15 2011-09-14 三菱樹脂株式会社 Reinforcement method
CN102146733B (en) * 2011-03-08 2012-11-14 郑州大学 Method for strengthening brick wall through fiber cloth
JP6339955B2 (en) * 2015-03-18 2018-06-06 株式会社Lixil Seismic retrofit wall structure of building and construction method of seismic retrofit wall of building
CN106760600A (en) * 2016-12-16 2017-05-31 武汉大学 A kind of method of utilization steel-bonded reinforcement concrete compression memberses
CN113685057A (en) * 2021-09-07 2021-11-23 中国建筑第八工程局有限公司 Prestress FRP (fiber reinforced Plastic) reinforcing structure of T-shaped component and construction method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008261219A (en) * 2008-06-27 2008-10-30 Ohbayashi Corp Member reinforcing structure and reinforcing method

Also Published As

Publication number Publication date
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