JP3050108B2 - Column reinforcement method - Google Patents
Column reinforcement methodInfo
- Publication number
- JP3050108B2 JP3050108B2 JP31420195A JP31420195A JP3050108B2 JP 3050108 B2 JP3050108 B2 JP 3050108B2 JP 31420195 A JP31420195 A JP 31420195A JP 31420195 A JP31420195 A JP 31420195A JP 3050108 B2 JP3050108 B2 JP 3050108B2
- Authority
- JP
- Japan
- Prior art keywords
- column
- steel
- plate
- backing plate
- section
- 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
- Rod-Shaped Construction Members (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Foundations (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、主にＨ形鋼から
なる鉄骨柱を補強する柱の補強方法に関する。[0001] The present invention mainly relates to H-section steels.
The present invention relates to a method of reinforcing a steel column .
【０００２】[0002]
【従来の技術】最近の内外の大地震により鉄筋コンクリ
ートの建物は、大きな被害を受けたが、その被害の原因
として柱の剪断破壊が第一に指摘されている。そして、
その剪断破壊を増長する原因は強震時での多数回交番繰
り返し変形であることが究明され、このような繰り返し
力に対して鉄筋コンクリート柱が剪断破壊するのを防止
し、復元力特性の安定と粘りを確保するには、主筋によ
って囲まれている部分のコンクリート（コアコンクリー
ト）を有効に拘束することが最適であることが最近の研
究で解明されている。2. Description of the Related Art Reinforced concrete buildings have been seriously damaged by recent large-scale earthquakes inside and outside Japan, and shear damage of columns has been pointed out first as a cause of the damage. And
It was determined that the cause of the increase in shear failure was repeated and repeated deformation during strong earthquakes, and it was possible to prevent reinforced concrete columns from being sheared and destroyed by such repeated forces. Recent research has revealed that it is optimal to effectively constrain the concrete (core concrete) in the area surrounded by the main reinforcement in order to assure the optimum condition.
【０００３】このような考えに基いて、柱の外周に鋼板
や繊維補強シートを巻き付けて柱の剪断耐力を高める方
法が既になされている。[0003] Based on this idea, a method of winding a steel plate or a fiber reinforced sheet around the outer periphery of a column to increase the shear strength of the column has already been made.
【０００４】[0004]
【発明が解決しようとする課題】しかし、鉄筋コンクリ
ート柱は矩形断面形をしている場合がほとんどなので、
鉄筋コンクリート柱の外周に単に鋼板や繊維補強シート
を巻き付けるだけでは、その補強効果は低く、鋼板や繊
維補強シートを鉄筋コンクリート柱の表面に均一に密着
させて巻き付けることがきわめて難しい。However, most reinforced concrete columns have a rectangular cross section.
Simply wrapping a steel plate or a fiber reinforced sheet around the outer periphery of a reinforced concrete column has a low reinforcing effect, and it is extremely difficult to uniformly wrap the steel plate or fiber reinforced sheet on the surface of the reinforced concrete column.
【０００５】特に柱のコーナ部に密着させることは非常
に困難を強いられ、このため、部分的に応力集中を起こ
すなどして鋼板や繊維補強シートを剪断補強材として有
効に活用できない等の課題があった。In particular, it is very difficult to bring the steel sheet or the fiber reinforced sheet into close contact with the corner of the column, so that the steel sheet or the fiber reinforced sheet cannot be effectively used as a shear reinforcing material due to partial concentration of stress. was there.
【０００６】また、鉄筋コンクリート柱の各面を削る等
して柱の各面を平坦にしてから鋼板又は繊維補強シート
を巻き付ける必要があるので、施工が面倒になりやすい
等の課題もあった。In addition, since it is necessary to wind each surface of the reinforced concrete column by flattening each surface of the column, for example, and then winding a steel plate or a fiber reinforced sheet, there is another problem that the construction tends to be troublesome.
【０００７】この発明は、以上の課題を解決するために
なされたもので、特に既存の鉄骨柱を有効に補強できる
ようにした柱の補強方法を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a method of reinforcing a steel column , in particular, which can effectively reinforce an existing steel column .
【０００８】[0008]
【課題を解決するための手段】この発明に係る柱の補強
方法は、請求項１として、Ｈ形鋼からなる鉄骨柱の凹部
にモルタルなどの充填材を充填して矩形断面形の柱と
し、その各面に柱の軸芯を中心に円形断面を形成するよ
うに、外側面が円曲面状をなす当て板を添着し、この当
て板の外周に鋼板又は高強力繊維補強シートを巻回す
る。According to a first aspect of the present invention, there is provided a method for reinforcing a column, comprising filling a recess of a steel column made of H-section steel with a filler such as mortar to form a column having a rectangular cross section. An abutment plate having a curved outer surface is attached to each surface thereof so as to form a circular cross section around the axis of the pillar, and a steel plate or a high-strength fiber reinforced sheet is wound around the outer periphery of the abutment plate. .
【０００９】請求項２として、Ｈ形鋼からなる鉄骨柱の
各面に柱の軸芯を中心に円形断面を形成するように、外
側面が円曲面状をなす当て板を添着し、この当て板の外
周に鋼板または高強力繊維補強シートを巻回し、次に鉄
骨柱の凹部にグラウト材を充填する。According to a second aspect of the present invention, a backing plate having a curved outer surface is attached to each surface of the steel column made of an H-shaped steel so as to form a circular cross section around the axis of the pillar. A steel plate or a high-strength fiber reinforced sheet is wound around the outer periphery of the plate, and the grout material is then filled in the recesses of the steel column.
【００１０】請求項３として、請求項１または２の柱の
補強方法において、鉄骨柱の軸芯方向に当て板を連続、
または複数個に分割して形成し、この当て板を鉄骨柱の
各面にその軸芯方向に連続するようにそれぞれ添着す
る。According to a third aspect of the present invention, in the method for reinforcing a column according to the first or second aspect, the contact plate is continuously provided in the axial direction of the steel column.
Alternatively, the support plate is divided into a plurality of parts, and the backing plate is attached to each surface of the steel column so as to be continuous in the axial direction.
【００１１】請求項４として、請求項１、２または３の
柱の補強方法において、鉄骨柱又は当て板の一方に突起
を、他方に前記突起が嵌合する凹部をそれぞれ設け、前
記凹部に前記突起を嵌合して前記当て板を鉄骨柱の各面
にそれぞれ添着する。According to a fourth aspect of the present invention, in the method of reinforcing a column according to the first, second or third aspect, a protrusion is provided on one of the steel column and the backing plate, and a recess is provided on the other, the recess being fitted with the protrusion. By fitting the projections, the abutment plate is attached to each surface of the steel column.
【００１２】請求項５として、請求項１、２、３または
４の柱の補強方法において、高強力繊維補強シートは樹
脂材を含浸させて硬化させる。According to a fifth aspect, in the column reinforcing method of the first, second, third or fourth aspect, the high-strength fiber reinforced sheet is impregnated with a resin material and cured.
【００１３】[0013]
【発明の実施の形態】図１〜図７は、この発明の実施の
一形態例を示し、図において、鉄骨柱４の凹部４ａにモ
ルタル等の充填材５を充填して矩形断面形の柱１を形成
し、柱１の各面１ａに当て板２を取り付け、その上に剪
断補強するための鋼板または高強力繊維補強シート３を
巻き付けるか、または鉄骨柱４の外周に当て板２を取り
付け、その上に鋼板または高強力繊維補強シート３を巻
き付け、その後にモルタル等のグラウト材を充填して鉄
骨柱１が一体化補強されている。 DETAILED DESCRIPTION OF THE INVENTION Figures 1-7 show an embodiment of the present invention. In the figure, mode the recess 4a of the steel column 4
Filling a filling material 5 such as rutar to form a column 1 having a rectangular cross section
Then, a patch plate 2 is attached to each surface 1a of the pillar 1, and
Steel plate or high-strength fiber reinforced sheet 3 for shear reinforcement
Wrap or take the backing plate 2 around the outer periphery of the steel column 4
And wrap a steel plate or a high-strength fiber reinforced sheet 3 on it.
After that, grout material such as mortar is filled and iron
The trabecular column 1 is integrally reinforced.
【００１４】当て板２は鉄骨柱４を、その軸芯を中心に
円形断面の柱を形成するように円曲面状に形成されてい
る。The backing plate 2 has a steel column 4 formed in a circular curved shape so as to form a column having a circular cross section about its axis.
【００１５】また、当て板２はコンクリート材、合成樹
脂材、木材、又はＦＲＣ材などから成形されている。な
お、当て板２をコンクリート材または合成樹脂材から成
形する場合、塩ビ管または鋼管を半円形に二つ割りに
し、これを型枠とすることにより当て板２を平滑できわ
めて安価にかつ容易に成形することができる。The backing plate 2 is formed from a concrete material, a synthetic resin material, wood, FRC material or the like. In the case where the backing plate 2 is formed from a concrete material or a synthetic resin material, a polyvinyl chloride pipe or a steel pipe is divided into two halves, and this is used as a mold so that the backing plate 2 can be formed smoothly, extremely inexpensively and easily. be able to.
【００１６】また、当て板２の裏側面は柱１の各面１ａ
に密着するように平坦に形成されている。また、当て板
２の裏側面には凹部２ｂが形成され、柱１の各面１ａに
この凹部２ｂに嵌合する突起１ｂとしてボルトまたはホ
ールインアンカーが突設されている（図６参照）。そし
て、当て板２は凹部２ｂと突起１ｂとを嵌合することに
より柱１の各面１ａに仮固定され、かつ接着材によって
柱１の各面１ａに固着されている。The back surface of the backing plate 2 is formed on each surface 1a of the pillar 1.
It is formed flat so as to be in close contact with. A concave portion 2b is formed on the back side surface of the backing plate 2, and a bolt or a hole-in anchor is protruded from each surface 1a of the column 1 as a protrusion 1b fitted into the concave portion 2b (see FIG. 6). The contact plate 2 is temporarily fixed to each surface 1a of the column 1 by fitting the concave portion 2b and the projection 1b, and is fixed to each surface 1a of the column 1 by an adhesive.
【００１７】また、当て板２は柱１の軸芯方向に連続し
て形成し、そのそれぞれを柱１の各面１ａに添着する場
合（図４(a),(b) 参照）、柱１の軸芯方向に複数個に分
割して形成し、そのそれぞれを柱１の各面１ａに柱１の
軸芯方向に連続するように添着する場合（図５(a),(b),
(c),(d) 参照）とがあり、施工条件などに応じていずれ
かを選択する。When the backing plate 2 is formed continuously in the axial direction of the column 1 and is attached to each surface 1a of the column 1 (see FIGS. 4A and 4B), the column 1 (A), (b), and (b) are attached to each surface 1a of the column 1 so as to be continuous in the axial direction of the column 1.
(See (c) and (d)), and select one according to the construction conditions.
【００１８】鋼板または高強力補強繊維シート３は当て
板２の外周に一回、または必要に応じて二回ないしそれ
以上巻き付けられている。また、必要に応じて一定の張
力が導入されている。さらに、鋼板または高強力繊維補
強シートは当て板２の外周に柱１の軸芯方向に連続する
スパイラル状又は単に鉢巻き状（テープ状）に巻き付け
られている。The steel plate or the high-strength reinforcing fiber sheet 3 is wound once around the outer periphery of the backing plate 2, or twice or more as necessary. Also, a constant tension is introduced as needed. Further, the steel plate or the high-strength fiber reinforced sheet is wound around the outer periphery of the backing plate 2 in a spiral shape or simply a headband shape (tape shape) continuous in the axial direction of the column 1.
【００１９】鋼板または高強力繊維補強シート３の巻き
付けに際しては、当て板２の外側面２ａが柱１の軸芯を
中心に円形断面を形成するように円曲面状に形成されて
いるので、鋼板または高強力繊維補強シート３を当て板
２の外側面２ａに隙間なく密着させて確実に巻き付ける
ことができ、また、張力を導入する際にも均一に張力を
導入することができる。When the steel plate or the high-strength fiber reinforced sheet 3 is wound, the outer surface 2a of the backing plate 2 is formed into a circular curved surface so as to form a circular cross section centering on the axis of the column 1. Alternatively, the high-strength fiber-reinforced sheet 3 can be tightly wound around the outer surface 2a of the backing plate 2 without any gap, and the tension can be uniformly introduced when the tension is introduced.
【００２０】さらに、高強力繊維シート３には硬化性合
成樹脂材を塗着または含浸させて硬化させることにより
柱１と高強力繊維補強シート３との一体化を図ると共
に、その後の仕上げをし易くしてある。Further, the column 1 and the high-strength fiber reinforced sheet 3 are integrated by applying or impregnating a curable synthetic resin material to the high-strength fiber sheet 3 and hardening the same. It's easy.
【００２１】以上の構成により、既存の鉄骨柱４を容易
に剪断補強することができ、このようにして補強された
柱１は鋼板又は高強力繊維補強シート３のコンファイン
ド効果によって剪断耐力が著しく高められる。With the above construction, the existing steel column 4 can be easily sheared and reinforced, and the column 1 reinforced in this way has a remarkably high shear strength due to the confining effect of the steel plate or the high-strength fiber reinforced sheet 3. Enhanced.
【００２２】[0022]
【発明の効果】この発明に係る柱の補強方法は以上説明
した構成からなり、Ｈ形鋼からなる鉄骨柱の凹部にモル
タル等の充填材を充填して矩形断面形の柱とし、その各
面に柱の軸芯を中心に円形断面を形成するように、外側
面が円曲面状をなす当て板を添着し、この当て板の外周
に鋼板または高強力繊維補強シートを巻き付けるので、
鋼板または高強力繊維補強シートを当て板の外側面に隙
間なく密着させて確実に巻き付けることができ、均一な
張力を導入することができる効果がある。 The method of reinforcing a column according to the present invention has the above-described structure, and is provided in a concave portion of a steel column made of H-section steel.
Into a column with a rectangular cross-section
On the outside, so as to form a circular cross section around the axis of the column
Attach a patch plate whose surface is a curved surface, and
Since a steel plate or a high-strength fiber reinforced sheet is wound around
Place a steel plate or high-strength fiber reinforced sheet on the outer surface of the backing plate.
It can be wound tightly and closely,
There is an effect that tension can be introduced.
【００２３】また、当て板を鉄骨柱の軸芯方向に連続ま
たは複数部分に分割して形成し、これを鉄骨柱の各面に
添着するので、施工がし易い効果がある。Further, the wear plate is formed by dividing a continuous or portions in the axial direction of the steel columns, since affixing it to each surface of the steel column, it is easy to effect construction is.
【００２４】また、鉄骨柱または当て板の一方に突起
を、他方に前記突起が嵌合する凹部をそれぞれ設け、前
記凹部に前記突起を嵌合して前記当て板を鉄骨柱の各面
にそれぞれ仮り付けするので、当て板の位置合わせ等が
し易く、施工精度の向上を図れる効果がある。Further, a projection on one of the steel column or caul, respectively a recess which the projection on the other are fitted, respectively the backing plate on each side of the steel columns of the protrusion fitted into the recess Since the tacking is performed, it is easy to perform the positioning of the backing plate and the like, and there is an effect that the construction accuracy can be improved.
【００２５】さらに、高強力繊維補強シートは、樹脂材
を塗着又は含浸させて硬化するので、柱と高強力繊維補
強シートとの完全な一体化が図れると共に、高強力繊維
補強シートの表面が平坦になってその後の仕上げがし易
くなる等の効果がある。Further, since the high-strength fiber-reinforced sheet is cured by applying or impregnating a resin material, the columns and the high-strength fiber-reinforced sheet can be completely integrated, and the surface of the high-strength fiber-reinforced sheet can be improved. There are effects such as flattening and easy finishing thereafter.
【図１】この発明に係る鉄骨柱の補強方法を示す側面図
である。FIG. 1 is a side view showing a method of reinforcing a steel column according to the present invention.
【図２】図１におけるａ−ａ線断面図である。FIG. 2 is a sectional view taken along line aa in FIG.
【図３】当て板の斜視図である。FIG. 3 is a perspective view of a backing plate.
【図４】(a),(b) は当て板の取付方法を示す柱の側面図
である。FIGS. 4 (a) and (b) are side views of a pillar showing a method of attaching a caul plate.
【図５】(a),(b),(c),(d) は当て板の取付方法を示す柱
の側面図である。FIGS. 5 (a), (b), (c), and (d) are side views of a pillar showing a method of attaching a backing plate.
【図６】当て板の仮止め方法を示す柱の一部縦断面図で
ある。FIG. 6 is a partial longitudinal sectional view of a column showing a method of temporarily fixing a backing plate.
【図７】鉄骨柱の補強方法を示す横断面図である。FIG. 7 is a transverse sectional view showing a method of reinforcing a steel column.
１…柱、２…当て板、 ３…鋼板又は高強力繊維補強シート、４…鉄骨柱、５…
充填材。DESCRIPTION OF SYMBOLS 1 ... pillar , 2 ... backing plate, 3 ... steel plate or high-strength fiber reinforced sheet, 4 ... steel column, 5 ...
Filling material.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 中川 裕章 東京都調布市飛田給２丁目19番１号 鹿 島建設株式会社技術研究所内 (56)参考文献 特開 昭52−89211（ＪＰ，Ａ) 特開 平６−193281（ＪＰ，Ａ) 特開 昭49−53525（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) E04G 23/02 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroaki Nakagawa 2-9-1-1, Tobita-Shi, Chofu-shi, Tokyo Kashima Construction Co., Ltd. Technical Research Institute (56) Reference JP-A-52-89211 (JP, A) JP-A-6-193281 (JP, A) JP-A-49-53525 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) E04G 23/02
Claims (5)
などの充填材を充填して矩形断面形の柱とし、その各面
に柱の軸芯を中心に円形断面を形成するように、外側面
が円曲面状をなす当て板を添着し、この当て板の外周に
鋼板又は高強力繊維補強シートを巻回することを特徴と
する柱の補強方法。1. A column having a rectangular cross-section by filling a concave portion of a steel column made of an H-section steel with a filler such as mortar, and forming a circular cross-section on each surface around the axis of the column. A method for reinforcing a column, comprising attaching a backing plate having an outer surface having a curved surface shape and winding a steel plate or a high-strength fiber-reinforced sheet around the outer periphery of the backing plate.
を中心に円形断面を形成するように、外側面が円曲面状
をなす当て板を添着し、この当て板の外周に鋼板又は高
強力繊維補強シートを巻回し、次に鉄骨柱の凹部にグラ
ウト材を充填することを特徴とする柱の補強方法。2. A steel plate made of an H-section steel is attached to each surface thereof with a patch plate having a circular curved outer surface so as to form a circular cross section centered on the axis of the column. A steel sheet or a high-strength fiber reinforced sheet, and then filling a grout material in a recess of the steel column.
は複数個に分割して形成し、この当て板を鉄骨柱の各面
にその軸芯方向に連続するようにそれぞれ添着すること
を特徴とする請求項１または２記載の柱の補強方法。3. A patch plate is formed continuously or divided into a plurality of pieces in the axial direction of the steel column, and this patch plate is attached to each surface of the steel column so as to be continuous in the axial direction. The method for reinforcing a column according to claim 1 or 2, wherein the column is reinforced.
方に前記突起が嵌合する凹部をそれぞれ設け、前記凹部
に前記突起を嵌合して前記当て板を鉄骨柱の各面にそれ
ぞれ添着することを特徴とする請求項１、２または３記
載の柱の補強方法。4. A projection is provided on one of a steel column and a backing plate, and a recess is provided on the other side for fitting the projection. The projection is fitted into the recess and the backing plate is attached to each surface of the steel pillar. 4. The method for reinforcing a column according to claim 1, wherein the column is attached.
せて前記高強力繊維シートを硬化させることを特徴とす
る請求項１、２、３または４記載の柱の補強方法。5. The method according to claim 1, wherein the high-strength fiber sheet is impregnated with a resin material to cure the high-strength fiber sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31420195A JP3050108B2 (en) | 1995-12-01 | 1995-12-01 | Column reinforcement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31420195A JP3050108B2 (en) | 1995-12-01 | 1995-12-01 | Column reinforcement method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09151610A JPH09151610A (en) | 1997-06-10 |
| JP3050108B2 true JP3050108B2 (en) | 2000-06-12 |
Family
ID=18050493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31420195A Expired - Fee Related JP3050108B2 (en) | 1995-12-01 | 1995-12-01 | Column reinforcement method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3050108B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4786485B2 (en) * | 2006-09-15 | 2011-10-05 | 新日本製鐵株式会社 | Reinforcing structure and reinforcing method for H-section steel material |
| JP4685737B2 (en) * | 2006-09-15 | 2011-05-18 | 新日本製鐵株式会社 | Reinforcing structure and reinforcing method for H-section steel material |
| CN102979320B (en) * | 2012-12-29 | 2016-04-06 | 上海市建筑科学研究院(集团)有限公司 | The method of serious damaged reinforced concrete frame structure reinforced by outsourcing steel bushing |
| JP5725486B1 (en) * | 2014-04-11 | 2015-05-27 | 一般社団法人 レトロフィットジャパン協会 | Reinforcement structure of H-shaped steel pillar |
| CN103967215B (en) * | 2014-04-14 | 2016-10-26 | 北京工业大学 | Light steel-timber with small diameter-carbon fibers the load-bearing pillar of circular cross-section and the practice |
| JP5974314B1 (en) * | 2016-02-09 | 2016-08-23 | 株式会社フジモト | Seismic reinforcement structure for H-shaped steel columns |
| CN107327155B (en) * | 2016-02-24 | 2019-03-08 | 朱奎 | The reinforced construction method of concrete weak column |
| CN105696805B (en) * | 2016-03-10 | 2017-11-28 | 叶长青 | Brick column reinforcing method |
-
1995
- 1995-12-01 JP JP31420195A patent/JP3050108B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09151610A (en) | 1997-06-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6219991B1 (en) | Method of externally strengthening concrete columns with flexible strap of reinforcing material | |
| KR100408437B1 (en) | Structure for reinforcing concrete member and reinforcing method | |
| US9890546B2 (en) | Reinforcement and repair of structural columns | |
| JP3765882B2 (en) | Reinforcement structure of existing concrete columnar body | |
| JP3050108B2 (en) | Column reinforcement method | |
| JP2005054532A (en) | Reinforcing structure of concrete structure, and method of reinforcing concrete structure | |
| JP3350447B2 (en) | Fiber sheet for reinforcement and repair | |
| JP3050109B2 (en) | Reinforcement method for reinforced concrete columns | |
| JP3018967B2 (en) | Reinforcement method for reinforced concrete columns | |
| JP3806252B2 (en) | Reinforcing method of concrete structure with reinforcing fiber sheet | |
| JP3096220B2 (en) | Pressure-resistant cylindrical pipe and its laying method | |
| JP3984378B2 (en) | Reinforced structure of concrete members | |
| JPH08120948A (en) | Reinforcing structure for existing concrete structure | |
| JP2718459B2 (en) | Reinforcement structure of existing concrete skeleton | |
| JPH0568594B2 (en) | ||
| JP2004225472A (en) | Reinforcing method of concrete structure | |
| JP2520304B2 (en) | Prestressed steel beam | |
| JPS6132463B2 (en) | ||
| JP3151722B2 (en) | Method and material for reinforcing concrete column | |
| JP2000027446A (en) | Concrete member reinforcing structure and method | |
| JPH1144047A (en) | Reinforced structure of concrete construction by use of continuous fiber sheet | |
| JP2001073559A (en) | Reinforcing joint for concrete structure and reinforcing structure | |
| JP3002740B2 (en) | Seismic reinforcement structure of columnar structure | |
| JPH10298930A (en) | Reinforcing method for concrete structure | |
| JPS621923A (en) | Concrete pile and its manufacture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20000229 |
|
| LAPS | Cancellation because of no payment of annual fees |