JP6004558B1 - Seismic reinforcement structure for structures - Google Patents

Seismic reinforcement structure for structures Download PDF

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JP6004558B1
JP6004558B1 JP2016075563A JP2016075563A JP6004558B1 JP 6004558 B1 JP6004558 B1 JP 6004558B1 JP 2016075563 A JP2016075563 A JP 2016075563A JP 2016075563 A JP2016075563 A JP 2016075563A JP 6004558 B1 JP6004558 B1 JP 6004558B1
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fiber
fiber sheet
reinforcing member
seismic reinforcement
reinforcing rib
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栄次 槇谷
栄次 槇谷
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栄次 槇谷
栄次 槇谷
新日本建設株式会社
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Abstract

【課題】構造が簡単で、製造が容易で耐震性能を向上することが可能な繊維シートサンドイッチ補強部材を永久型枠として用いた鉄筋コンクリート構造物、鉄骨コンクリート構造物及び鉄骨構造のいずれかの構造物の耐震補強構造を提供することを目的とする。【解決手段】鉄筋コンクリート構造物、鉄骨コンクリート構造物及び鉄骨構造のいずれかの構造物の耐震補強構造であって、補強対象の構造物に対して硬化性充填材を充填する空隙を設けて配置され本体部の上下に水平補強リブを形成した外側薄肉鋼板と本体部に垂直補強リブを形成した内側薄肉鋼板との間の水平補強リブ及び垂直補強リブ以外の本体部に配置される連続繊維シートとからなる繊維シートサンドイッチ補強部材と、コンクリート構造物と繊維シートサンドイッチ補強部材との空隙に充填される硬化性充填材と、からなることを特徴とする。【選択図】 図１[PROBLEMS] To provide a reinforced concrete structure, a steel concrete structure, and a steel structure using a fiber sheet sandwich reinforcing member that is simple in structure, easy to manufacture, and capable of improving seismic performance as a permanent formwork. The purpose is to provide a seismic reinforcement structure. A seismic reinforcement structure for any one of a reinforced concrete structure, a steel concrete structure, and a steel structure, which is arranged with a space filled with a curable filler in a structure to be reinforced. A continuous fiber sheet disposed on the main body portion other than the horizontal reinforcing rib and the vertical reinforcing rib between the outer thin steel plate having the horizontal reinforcing rib formed on the upper and lower sides of the main body portion and the inner thin steel plate having the vertical reinforcing rib formed on the main body portion; And a curable filler filled in the gap between the concrete structure and the fiber sheet sandwich reinforcing member. [Selection] Figure 1

Description

本発明は、鉄筋コンクリート構造物、鉄骨コンクリート構造物及び鉄骨構造のいずれかの構造物の耐震補強構造に関する。   The present invention relates to a seismic reinforcement structure for a reinforced concrete structure, a steel frame concrete structure, or a steel frame structure.

従来、鉄筋コンクリート構造物、鉄骨コンクリート構造物及び鉄骨構造の耐震補強構造として、構造物の外周部に鋼製の永久型枠を配置し、構造物と永久型枠間の空間に、未硬化のコンクリートを打設して、コンクリートを硬化させ、永久型枠と構造物を一体化する構造物耐震補強構造が提案されている。   Conventionally, as a seismic reinforcement structure for reinforced concrete structures, steel-concrete structures and steel structures, steel permanent formwork has been placed on the outer periphery of the structure, and unhardened concrete is placed in the space between the structure and the permanent formwork. A structure seismic reinforcement structure has been proposed in which concrete is hardened by laying the structure, and the permanent formwork and the structure are integrated.

また、鋼製の永久型枠の外周に繊維シートを巻き付け固定し、耐震性をより向上させた構造物耐震補強構造が提案されている。   In addition, a structure seismic reinforcement structure has been proposed in which a fiber sheet is wound around and fixed to the outer periphery of a permanent steel frame to further improve the seismic resistance.

特開２００８−２４０３６８号公報JP 2008-240368 A 特開２０１１−２６７８６号公報JP 2011-26786 A

しかしながら、従来の構造物耐震補強構造においては、鋼製の永久型枠に囲まれた空間に打設固化されるコンクリートと永久型枠との一体化が不十分であるという問題と、鋼製の永久型枠の地震時の変位に対する耐久性が十分でないという問題があり、その結果、鋼製の永久型枠に囲まれた空間に配筋される軸方向筋やフープ筋の量を増やさなければならないという問題を有していた。   However, in the conventional structure seismic reinforcement structure, there is a problem that the integration of the concrete and the permanent formwork which is cast and solidified in the space surrounded by the steel permanent formwork is insufficient, There is a problem that the durability of the permanent formwork against earthquake displacement is not sufficient, and as a result, the amount of axial and hoop reinforcements placed in the space surrounded by the steel permanent formwork must be increased. Had the problem of not becoming.

また、鋼製の永久型枠の外周に繊維シートを巻き付け固定する構造物耐震補強構造においては、繊維シートと鋼製永久型枠外周面との接着面が一面であるため、繊維シートと鋼板との付着力が不十分で繊維シートの引張強度が十分に発揮することができず、さらに複数層の繊維シートを巻き付け固定することが困難であるという問題を有していた。   In addition, in the structure seismic reinforcement structure in which the fiber sheet is wound and fixed around the outer periphery of the steel permanent mold, since the adhesive surface between the fiber sheet and the steel permanent mold outer peripheral surface is one surface, the fiber sheet and the steel plate The adhesive strength of the fiber sheet is insufficient, and the tensile strength of the fiber sheet cannot be fully exhibited, and it is difficult to wrap and fix a plurality of fiber sheets.

本発明は、従来技術の持つ課題を解決するもので、構造が簡単で、製造が容易で耐震性能を向上することが可能な繊維シートサンドイッチ補強部材を永久型枠として用いた鉄筋コンクリート構造物、鉄骨コンクリート構造物及び鉄骨構造のいずれかの構造物の耐震補強構造を提供することを目的とする。   The present invention solves the problems of the prior art, and is a reinforced concrete structure and steel frame using a fiber sheet sandwich reinforcing member that is simple in structure, easy to manufacture, and capable of improving seismic performance as a permanent mold. An object of the present invention is to provide a seismic reinforcement structure for either a concrete structure or a steel structure.

本発明の構造物用耐震補強構造は、前記課題を解決するために、鉄筋コンクリート構造物、鉄骨コンクリート構造物及び鉄骨構造のいずれかの構造物の耐震補強構造であって、補強対象の構造物に対して硬化性充填材を充填する空隙を設けて配置され外側本体部の上下に水平補強リブを形成した外側薄肉鋼板と内側本体部に垂直補強リブを形成した内側薄肉鋼板との間の水平補強リブ及び垂直補強リブ以外の外側本体部と内側本体部の間に配置される連続繊維シートとからなる繊維シートサンドイッチ補強部材と、コンクリート構造物と繊維シートサンドイッチ補強部材との空隙に充填される硬化性充填材と、からなることを特徴とする。
In order to solve the above-mentioned problem, the seismic reinforcement structure for a structure of the present invention is a seismic reinforcement structure of any one of a reinforced concrete structure, a steel concrete structure, and a steel structure, and the structure to be reinforced. Horizontal reinforcement between the outer thin steel plate with the horizontal reinforcing ribs formed on the upper and lower sides of the outer main body and the inner thin steel plate with the vertical reinforcing ribs on the inner main body provided with a space for filling the curable filler. Curing filled in the gap between the fiber sheet sandwich reinforcing member composed of a continuous fiber sheet disposed between the outer body part and the inner body part other than the ribs and the vertical reinforcing ribs, and the concrete structure and the fiber sheet sandwich reinforcing member And a filler.

また、本発明の構造物耐震補強構造は、前記水平補強リブと前記垂直補強リブに前記繊維シートサンドイッチ補強部材の連設や、構造物への固定のための複数の固定ボルト挿通孔を形成することを特徴とする。   Further, the structure seismic reinforcing structure of the present invention forms a plurality of fixing bolt insertion holes for connecting the fiber sheet sandwich reinforcing member to the horizontal reinforcing rib and the vertical reinforcing rib and for fixing to the structure. It is characterized by that.

また、本発明の構造物耐震補強構造は、上面視が一文字形、コ字形、Ｌ字形及び半円形の繊維シートサンドイッチ補強部材を用意し、使用個所に応じて選択して使用することを特徴とする。   The structure earthquake-proof reinforcement structure of the present invention is characterized by preparing a fiber sheet sandwich reinforcing member having a single-letter shape, a U-shape, an L-shape, and a semi-circle in top view, and selecting and using the fiber sheet sandwich reinforcing member according to the place of use. To do.

また、本発明の構造物耐震補強構造は、異なる繊維方向の連続繊維シートを複数枚積層して用いることを特徴とする。   The structural seismic reinforcement structure of the present invention is characterized by using a plurality of continuous fiber sheets in different fiber directions.

また、本発明の構造物耐震補強構造は、繊維シートサンドイッチ補強部材の硬化性充填材の充填側の薄肉鋼板の表面を粗面とすることを特徴とする。   Moreover, the structure earthquake-proof reinforcement structure of the present invention is characterized in that the surface of the thin steel plate on the filling side of the curable filler of the fiber sheet sandwich reinforcing member is roughened.

また、本発明の構造物耐震補強構造は、連続繊維シートの材料をカーボン繊維、アラミド繊維、ポリエチレン繊維及びポリアレート繊維のいずれかとすることを特徴とする。   The structural seismic reinforcement structure of the present invention is characterized in that the material of the continuous fiber sheet is any one of carbon fiber, aramid fiber, polyethylene fiber, and polyalate fiber.

鉄筋コンクリート構造物、鉄骨コンクリート構造物及び鉄骨構造のいずれかの構造物の耐震補強構造であって、補強対象の構造物に対して硬化性充填材を充填する空隙を設けて配置され外側本体部の上下に水平補強リブを形成した外側薄肉鋼板と内側本体部に垂直補強リブを形成した内側薄肉鋼板との間の水平補強リブ及び垂直補強リブ以外の外側本体部と内側本体部の間に配置される連続繊維シートとからなる繊維シートサンドイッチ補強部材と、コンクリート構造物と繊維シートサンドイッチ補強部材との空隙に充填される硬化性充填材と、からなることで、２枚の薄肉鋼板と一体化された繊維シートが引張強度、減衰性能を発揮し、耐震性にすぐれた構造物耐震補強構造とすることが可能となる。
水平補強リブと垂直補強リブに繊維シートサンドイッチ補強部材の連設や、構造物への固定のための複数の固定ボルト挿通孔を形成することで、繊維シートサンドイッチ補強部材の横方向、縦方向も連結が容易となり、さらに構造物への固定を容易にすることが可能となる。
上面視が一文字形、コ字形、Ｌ字形及び半円形の繊維シートサンドイッチ補強部材を用意し、使用個所に応じて選択して使用することで、多様なコンクリート構造物の形状に対応することが可能となる。
異なる繊維方向の繊維シートを複数枚積層して用いることで、より引張強度、減衰性能を向上させることが可能となる。
繊維シートサンドイッチ補強部材の硬化性充填材の充填側の薄肉鋼板の表面を粗面とすることで、硬化性充填材との付着力を向上させることが可能となる。
連続繊維シートの材料をカーボン繊維、アラミド繊維、ポリエチレン繊維及びポリアレート繊維のいずれかとすることで、引張強度の大きな材料で連続繊維シートを形成することが可能となる。
A seismic reinforcement structure for a reinforced concrete structure, a steel concrete structure, or a steel structure, provided with a space for filling the structure to be reinforced with a curable filler, and arranged on the outer body portion. It is disposed between the outer body portion and the inner body portion other than the horizontal reinforcing ribs and vertical reinforcement ribs between the inner thin steel sheet formed with vertical stiffening ribs on the outside thin steel plate and the inner body portion to form a horizontal reinforcing ribs vertically It is integrated with two thin steel plates by comprising a fiber sheet sandwich reinforcing member comprising a continuous fiber sheet and a curable filler filled in the gap between the concrete structure and the fiber sheet sandwich reinforcing member. The fiber sheet exhibits tensile strength and damping performance, and it is possible to obtain a seismic reinforcement structure with excellent earthquake resistance.
By connecting the fiber sheet sandwich reinforcing member to the horizontal reinforcing rib and the vertical reinforcing rib and forming a plurality of fixing bolt insertion holes for fixing to the structure, the horizontal and vertical directions of the fiber sheet sandwich reinforcing member can be It becomes easy to connect and can be easily fixed to the structure.
By preparing a fiber sheet sandwich reinforcing member with a single-letter shape, U-shape, L-shape and semi-circle in top view, and selecting it according to the location of use, it is possible to handle various shapes of concrete structures. It becomes.
By using a plurality of laminated fiber sheets in different fiber directions, it is possible to further improve tensile strength and damping performance.
By making the surface of the thin steel plate on the filling side of the curable filler of the fiber sheet sandwich reinforcing member rough, it is possible to improve the adhesion with the curable filler.
By using any one of carbon fiber, aramid fiber, polyethylene fiber, and polyalate fiber as the material of the continuous fiber sheet, it is possible to form the continuous fiber sheet with a material having a high tensile strength.

本発明の実施形態を示す図である。It is a figure which shows embodiment of this invention. 本発明の実施形態を示す図である。It is a figure which shows embodiment of this invention. 本発明の実施形態を示す図である。It is a figure which shows embodiment of this invention. 本発明の実施形態を示す図である。It is a figure which shows embodiment of this invention. （ａ）（ｂ）本発明の実施形態を示す図である。(A) (b) It is a figure which shows embodiment of this invention. （ａ）（ｂ）本発明の実施形態を示す図である。(A) (b) It is a figure which shows embodiment of this invention. 本発明の実施形態を示す図である。It is a figure which shows embodiment of this invention. 本発明の実施形態を示す図である。It is a figure which shows embodiment of this invention. 本発明の実施形態を示す図である。It is a figure which shows embodiment of this invention. 本発明の実施形態を示す図である。It is a figure which shows embodiment of this invention. 本発明の実施形態を示す図である。It is a figure which shows embodiment of this invention. 本発明の実施形態を示す図である。It is a figure which shows embodiment of this invention.

本発明の実施の形態を図により説明する。図１は、本発明の構造物の耐震構造に用いる繊維シートサンドイッチ補強部材１の一実施形態を示す図である。   Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a view showing an embodiment of a fiber sheet sandwich reinforcing member 1 used for an earthquake resistant structure of a structure of the present invention.

図１は、上面視コ字形の繊維シートサンドイッチ補強部材１の構成部材を示す図である。繊維シートサンドイッチ補強部材１は、断面コ字形の外側薄肉鋼板２、連続繊維シート３、断面コ字形の内側薄肉鋼板４により構成される。外側薄肉鋼板２は、断面コ字形の外側本体部２ａの上下端部から内側に水平に伸びる上水平補強リブ２ｂと下水平補強リブ２ｃが形成される。
FIG. 1 is a view showing components of a U-shaped fiber sheet sandwich reinforcing member 1 in a top view. The fiber sheet sandwich reinforcing member 1 includes an outer thin steel plate 2 having a U-shaped cross section, a continuous fiber sheet 3, and an inner thin steel plate 4 having a U-shaped cross section. The outer thin steel plate 2 is formed with an upper horizontal reinforcing rib 2b and a lower horizontal reinforcing rib 2c extending horizontally inward from the upper and lower ends of the outer main body 2a having a U-shaped cross section.

内側薄肉鋼板４は、断面コ字形の内側本体部４ａに垂直補強リブ４ｂが形成される。この実施形態では、垂直補強リブ４ｂが内側本体部４ａの内側に９０度折曲して形成されているが、９０度外側に折曲して形成しても良い。外側薄肉鋼板２と内側薄肉鋼板４との間に連続繊維シート３を外側薄肉鋼板２の外側本体部２ａと内側薄肉鋼板４の内側本体部４ａにのみに接するように配置し、上下水平補強リブ２ｂ、２ｃ及び垂直補強リブ４ｂの部分には配置されないように接着剤を介して一体化する。上下水平補強リブ２ｂ、２ｃ及び垂直補強リブ４ｂの部分に接着剤を介して配置された連続繊維使途３が配置されていないため、繊維シートサンドイッチ補強部材１を連設する際、上下水平補強リブ２ｂ、２ｃ及び垂直補強リブ４ｂの部分をスポット溶接するような場合でも安全である。
In the inner thin steel plate 4, vertical reinforcing ribs 4b are formed on the inner main body 4a having a U-shaped cross section. In this embodiment, the vertical reinforcing rib 4b is bent 90 degrees inside the inner body portion 4a, but may be bent 90 degrees outside. The continuous fiber sheet 3 is disposed between the outer thin steel plate 2 and the inner thin steel plate 4 so as to be in contact with only the outer main body 2a of the outer thin steel plate 2 and the inner main body 4a of the inner thin steel plate 4, and the vertical horizontal reinforcing ribs. 2b, 2c and the vertical reinforcing rib 4b are integrated through an adhesive so as not to be disposed. When the fiber sheet sandwich reinforcing member 1 is continuously provided, the vertical horizontal reinforcing ribs are not provided because the continuous fiber usage 3 arranged via the adhesive is not arranged in the upper and lower horizontal reinforcing ribs 2b and 2c and the vertical reinforcing rib 4b. Even when spot welding is performed on the portions of 2b, 2c and the vertical reinforcing rib 4b, it is safe.

外側薄肉鋼板２と内側薄肉鋼板４を連続繊維シート３を介して一体化する際、連続繊維シート３の厚み分だけ外側薄肉鋼板２の寸法を内側薄肉鋼板４の寸法より大きく形成する。   When the outer thin steel plate 2 and the inner thin steel plate 4 are integrated via the continuous fiber sheet 3, the outer thin steel plate 2 is formed to have a size larger than the inner thin steel plate 4 by the thickness of the continuous fiber sheet 3.

連続繊維シート３の材料としてはカーボン繊維などの無機系繊維、アラミド繊維、ポリエチレン繊維及びポリアレート繊維などの有機系繊維を用いる。これらの繊維で形成される１方向及び２方向の繊維シート４の引張強度は５〜１８０ｔｏｎ／ｍと大きい。外側薄肉鋼板２と内側薄肉鋼板４の間に複数層の連続繊維シート３を積層する場合、繊維方向が異なるように積層配置する。繊維方向が異なるように積層配置することにより、繊維シート４の引張強度と減衰性能が向上する。   As a material of the continuous fiber sheet 3, inorganic fibers such as carbon fibers, organic fibers such as aramid fibers, polyethylene fibers, and polyarate fibers are used. The tensile strength of the fiber sheet 4 in one direction and two directions formed with these fibers is as high as 5 to 180 ton / m. When laminating a plurality of layers of continuous fiber sheets 3 between the outer thin steel plate 2 and the inner thin steel plate 4, they are laminated so that the fiber directions are different. By arranging the layers so that the fiber directions are different, the tensile strength and damping performance of the fiber sheet 4 are improved.

繊維シートサンドイッチ補強部材１は、厚さ１．０〜２．３ｍｍの外内薄肉鋼板２、４の表面に接着樹脂材を付着させる。接着樹脂材の付着した外内薄肉鋼板２、４の間に連続繊維シート３を置き、外内薄肉鋼板２、４に荷重を加え、連続繊維シート３を圧着固定する。外内薄肉鋼板２、４の表面の接着樹脂材が付着しているので複数層の繊維シート３を積層配置しても確実に外内薄肉鋼板２、４に接着固定される。   The fiber sheet sandwich reinforcing member 1 adheres an adhesive resin material to the surfaces of the outer and inner thin steel plates 2 and 4 having a thickness of 1.0 to 2.3 mm. The continuous fiber sheet 3 is placed between the outer and inner thin steel plates 2 and 4 to which the adhesive resin material is adhered, a load is applied to the outer and inner thin steel plates 2 and 4, and the continuous fiber sheet 3 is fixed by pressure bonding. Since the adhesive resin material on the surfaces of the outer and inner thin steel plates 2 and 4 adheres, the outer and inner thin steel plates 2 and 4 are surely bonded and fixed even if a plurality of layers of fiber sheets 3 are laminated.

外内薄肉鋼板２、４の間に連続繊維シート３を圧着固定するので連続繊維シート３の付着強度が向上し、連続繊維シート３の引張強度が著しく増大する。従来の鋼板の外表面に連続繊維シートを固定するものは、連続繊維シートの鋼板への付着性能が低いため、付着強度が繊維シートの設計引張強度より著しく小さくなる。   Since the continuous fiber sheet 3 is crimped and fixed between the outer and inner thin steel plates 2 and 4, the adhesion strength of the continuous fiber sheet 3 is improved, and the tensile strength of the continuous fiber sheet 3 is remarkably increased. In the conventional case where the continuous fiber sheet is fixed to the outer surface of the steel sheet, the adhesion strength of the continuous fiber sheet to the steel sheet is low, so that the adhesion strength is significantly smaller than the designed tensile strength of the fiber sheet.

外側薄肉鋼板２の上下水平補強リブ２ｂ、２ｃと内側薄肉鋼板４の垂直補強リブ４ｂには、複数の繊維シートサンドイッチ補強部材１を縦方向、横方向に連設したり、構造物に固定するための固定ボルト挿通孔５を複数形成する。図２は、図１に示す外側薄肉鋼板２と内側薄肉鋼板４を連続繊維シート３を一体化し上面視コ字形の繊維シートサンドイッチ補強部材１とした状態を示す。前述のように垂直補強リブ４ｂを９０度外側に折曲して形成しても良い。   A plurality of fiber sheet sandwich reinforcing members 1 are connected to the vertical and horizontal horizontal reinforcing ribs 2b and 2c of the outer thin steel plate 2 and the vertical reinforcing ribs 4b of the inner thin steel plate 4 in the vertical and horizontal directions or fixed to the structure. A plurality of fixing bolt insertion holes 5 are formed. FIG. 2 shows a state where the outer thin steel plate 2 and the inner thin steel plate 4 shown in FIG. 1 are integrated with the continuous fiber sheet 3 to form a U-shaped fiber sheet sandwich reinforcing member 1. As described above, the vertical reinforcing rib 4b may be bent 90 degrees outward.

繊維シートサンドイッチ補強部材１は、接着樹脂材の強度管理や圧着装置が整った工場で形成し、強度のばらつきがない製品とする。減衰性に優れた連続繊維シート３と伸び率の大きな軟鋼材の外側薄肉鋼板２と内側薄肉鋼板４を用いて繊維シートサンドイッチ補強部材１が形成されているので、繊維シートサンドイッチ補強部材１自体が履歴減衰特性を有するので、これを補強部材として用いると構造物の制震性能が向上する。繊維シートサンドイッチ補強部材１の硬化剤充填側に位置する一方の表面をサンドブラスト等の手段により粗面とし、硬化剤との定着性を向上させる。   The fiber sheet sandwich reinforcing member 1 is formed in a factory where the strength management of the adhesive resin material and the crimping apparatus are prepared, and the product has no strength variation. Since the fiber sheet sandwich reinforcing member 1 is formed by using the continuous fiber sheet 3 excellent in damping property, the outer thin steel plate 2 and the inner thin steel plate 4 of a mild steel material having a high elongation rate, the fiber sheet sandwich reinforcing member 1 itself is formed. Since it has a hysteresis damping characteristic, if it is used as a reinforcing member, the vibration control performance of the structure is improved. One surface of the fiber sheet sandwich reinforcing member 1 located on the curing agent filling side is roughened by means such as sandblasting to improve the fixability with the curing agent.

図３は、上面視Ｌ字形の繊維シートサンドイッチ補強部材１、図４は、上面視一文字形の繊維シートサンドイッチ補強部材１、図５（ａ）（ｂ）は、上面視半円形の繊維シートサンドイッチ補強部材１を示す。外側薄肉鋼板２、内側薄肉鋼板４、連続繊維シート３の配置構成は上面視コ字形の繊維シートサンドイッチ補強部材１と同様であるので説明を省略する。   3 is a fiber sheet sandwich reinforcing member 1 having an L shape in a top view, FIG. 4 is a fiber sheet sandwich reinforcing member 1 having a single character in a top view, and FIGS. 5A and 5B are fiber sheet sandwiches having a semicircular shape in a top view. The reinforcing member 1 is shown. Since the arrangement configuration of the outer thin steel plate 2, the inner thin steel plate 4, and the continuous fiber sheet 3 is the same as that of the U-shaped fiber sheet sandwich reinforcing member 1, description thereof is omitted.

図６（ａ）（ｂ）は、繊維サンドイッチ補強部材１を断面矩形の鉄筋コンクリート柱６の耐震補強に適用した例を示す図である。床構造７から立設する断面矩形の鉄筋コンクリート柱６耐震補強のため、断面矩形の鉄筋コンクリート柱６の周囲にコンクリート等の硬化性充填材の充填空隙を開けて図２に示される上面視コ字形の繊維サンドイッチ補強部材１を向かい合わせに配置する。垂直補強リブ４ａの固定ボルト挿通孔５に固定ボルト８を挿入しナットを螺着して向かい合わせた上面視コ字形の繊維サンドイッチ補強部材１を連結する。床構造７に接する下水平補強リブ２ｂの固定ボルト挿通孔５からアンカーボルト９を床構造７に打ち込み固定する。   FIGS. 6A and 6B are diagrams showing an example in which the fiber sandwich reinforcing member 1 is applied to seismic reinforcement of a reinforced concrete column 6 having a rectangular cross section. A reinforced concrete column 6 having a rectangular cross section standing from the floor structure 7 is provided with a U-shaped top view shown in FIG. 2 by opening a space filled with a curable filler such as concrete around the reinforced concrete column 6 having a rectangular cross section. The fiber sandwich reinforcing member 1 is arranged face to face. A fixing bolt 8 is inserted into the fixing bolt insertion hole 5 of the vertical reinforcing rib 4a, and a nut is screwed to connect the U-shaped fiber sandwich reinforcing member 1 facing each other. Anchor bolts 9 are driven into and fixed to the floor structure 7 from the fixing bolt insertion holes 5 of the lower horizontal reinforcing rib 2b in contact with the floor structure 7.

１段目の上面視コ字形の繊維サンドイイチ補強部材１の連結固定が終了すると、２段目の繊維サンドイッチ補強部材１を連結固定する。２段目の繊維サンドイッチ補強部材１の向きを１段目の繊維サンドイッチ補強部材１の向きを９０度変えて垂直補強リブ４ｂの接合部が直線状になるのを防止する。１段目の繊維サンドイッチ補強部材１の上水平補強リブ２ｂの固定ボルト挿通孔５と２段目の繊維サンドイッチ補強部材１の下水平補強リブ２ｃの固定ボルト挿通孔５に固定ボルト８を挿入し、ナットを螺着して固定する。この作業を順次実施し、断面矩形の鉄筋コンクリート柱６の上部まで繊維サンドイッチ補強部材１を連結固定する。鉄筋コンクリート柱６と繊維サンドイッチ補強部材１の空隙に軸方向筋１０、必要に応じてフープ筋を配筋し、コンクリートモルタル等の硬化性充填材を充填し、硬化させ、鉄筋コンクリート柱６と繊維サンドイッチ補強部材１を一体化する。繊維サンドイッチ補強部材１は、連続繊維シート３が外内薄肉鋼板２、４と一体化されており、繊維サンドイッチ補強部材１自体が引張強度が大きく、減衰性に優れているため、配筋量を少なくすることが可能となる。   When the connection and fixing of the first-stage U-shaped fiber sandwich reinforcing member 1 is completed, the second-stage fiber sandwich reinforcing member 1 is connected and fixed. The direction of the second-stage fiber sandwich reinforcing member 1 is changed by 90 degrees to prevent the joint portion of the vertical reinforcing rib 4b from becoming straight. The fixing bolt 8 is inserted into the fixing bolt insertion hole 5 of the upper horizontal reinforcing rib 2b of the first-stage fiber sandwich reinforcing member 1 and the fixing bolt insertion hole 5 of the lower horizontal reinforcing rib 2c of the second-stage fiber sandwich reinforcing member 1. Screw the nut and fix it. This operation is sequentially performed, and the fiber sandwich reinforcing member 1 is connected and fixed to the upper part of the reinforced concrete column 6 having a rectangular cross section. Reinforcement of reinforced concrete column 6 and fiber sandwich reinforcement member 1 is reinforced concrete column 6 and fiber sandwich reinforcement by placing axial reinforcement 10 in the gap between reinforced concrete column 6 and fiber sandwich reinforcement member 1 and, if necessary, filling a hoop reinforcement and filling with curable filler such as concrete mortar. The member 1 is integrated. In the fiber sandwich reinforcing member 1, the continuous fiber sheet 3 is integrated with the outer and inner thin steel plates 2 and 4, and the fiber sandwich reinforcing member 1 itself has high tensile strength and excellent damping properties. It can be reduced.

図７は、断面Ｈ型の鉄骨柱１１の耐震補強に繊維サンドイッチ補強部材１を適用した例を示す図である。断面Ｈ型の鉄骨柱１１の周囲に硬化性充填材の充填空隙をあけて、上面視コ字形の繊維サンドイッチ補強部材１を向かい合わせに配置する。垂直補強リブ４ａの固定ボルト挿通孔５に固定ボルト８を挿入しナットを螺着して向かい合わせた上面視コ字形の繊維サンドイッチ補強部材１を連結する。床構造７への固定や、上部に積み上げていく構成は、断面矩形の鉄筋コンクリート柱６の耐震補強と同様であるので説明を省略する。   FIG. 7 is a view showing an example in which the fiber sandwich reinforcing member 1 is applied to the seismic reinforcement of the steel column 11 having an H-shaped cross section. A fiber sandwich reinforcing member 1 having a U-shape in a top view is disposed facing each other with a filling void of a curable filler around a steel column 11 having an H-shaped cross section. A fixing bolt 8 is inserted into the fixing bolt insertion hole 5 of the vertical reinforcing rib 4a, and a nut is screwed to connect the U-shaped fiber sandwich reinforcing member 1 facing each other. Since the structure fixed to the floor structure 7 and piled up on the upper part is the same as the seismic reinforcement of the reinforced concrete column 6 having a rectangular cross section, the description thereof is omitted.

図８は、断面Ｈ型の鉄骨柱１１の耐震補強に繊維サンドイッチ補強部材１を適用した例を示す図である。断面Ｈ型の鉄骨柱１１の周囲に硬化性充填材の充填空隙をあけて、上面視半円形の繊維サンドイッチ補強部材１を向かい合わせに配置する。垂直補強リブ４ａの固定ボルト挿通孔５に固定ボルト８を挿入しナットを螺着して向かい合わせた上面視半円形の繊維サンドイッチ補強部材１を連結する。床構造７への固定や、上部に積み上げていく構成、硬化性充填材の充填工程は、断面矩形の鉄筋コンクリート柱６の耐震補強と同様であるので説明を省略する。   FIG. 8 is a diagram showing an example in which the fiber sandwich reinforcing member 1 is applied to the seismic reinforcement of the steel column 11 having an H-shaped cross section. A fiber sandwich reinforcing member 1 having a semicircular top view is disposed facing each other with a filling space of a curable filler around the steel column 11 having an H-shaped cross section. The fixing bolt 8 is inserted into the fixing bolt insertion hole 5 of the vertical reinforcing rib 4a and the nut is screwed to connect the fiber sandwich reinforcing members 1 that are semicircular in top view and face each other. Since the fixing to the floor structure 7, the construction of stacking the upper part, and the filling process of the curable filler are the same as the seismic reinforcement of the reinforced concrete column 6 having a rectangular cross section, the description thereof is omitted.

図９は、断面矩形の鉄骨コンクリート柱１２の一面のみの耐震補強に繊維サンドイッチ補強部材１を適用した例を示す図である。断面矩形の鉄骨コンクリート柱１２の一面側に上面視コ字形の繊維サンドイッチ補強部材１の垂直補強リブ４ｂが断面矩形の鉄骨コンクリート柱１２の一面と接するように配置し、垂直補強リブ４ｂに形成した固定ボルト挿通孔５を通してアンカーボルト９を打ち込み固定する。鉄骨コンクリート柱１２にあと施工アンカー１４を埋め込み、あと施工アンカー１４の突出部を鉄骨コンクリート柱１２と繊維サンドイッチ補強部材１との空隙に配筋した軸方向筋１０とフープ筋１３の近傍に位置させる。あと施工アンカー１４の突出部を軸方向筋１０とフープ筋１３の近傍に位置させることにより、鉄骨コンクリート柱１２と固化した硬化性充填材との一体化が促進され耐震性能が向上する。床構造７への固定や、上部に積み上げていく構成、硬化性充填材の充填工程は、断面矩形の鉄筋コンクリート柱６の耐震補強と同様であるので説明を省略する。   FIG. 9 is a diagram showing an example in which the fiber sandwich reinforcing member 1 is applied to the seismic reinforcement of only one surface of the steel concrete column 12 having a rectangular cross section. The vertical reinforcing rib 4b of the fiber sandwich reinforcing member 1 having a U-shaped top view is disposed on one surface side of the steel concrete column 12 having a rectangular cross section so as to be in contact with one surface of the steel concrete column 12 having a rectangular cross section. The anchor bolt 9 is driven and fixed through the fixing bolt insertion hole 5. The post-construction anchor 14 is embedded in the steel concrete column 12, and the protruding portion of the post-construction anchor 14 is positioned in the vicinity of the axial reinforcement 10 and the hoop reinforcement 13 arranged in the gap between the steel concrete pillar 12 and the fiber sandwich reinforcing member 1. . By positioning the projecting portion of the post-construction anchor 14 in the vicinity of the axial reinforcement 10 and the hoop reinforcement 13, the integration of the steel concrete column 12 and the solidified curable filler is promoted and the earthquake resistance is improved. Since the fixing to the floor structure 7, the construction of stacking the upper part, and the filling process of the curable filler are the same as the seismic reinforcement of the reinforced concrete column 6 having a rectangular cross section, the description thereof is omitted.

図１０は、鉄筋コンクリート柱６と鉄筋コンクリート梁１５の交差部の耐震補強に繊維サンドイッチ補強部材１を適用した例を示す図である。鉄筋コンクリート柱５と鉄筋コンクリート梁１４の交差部に一対の上面視Ｌ字形の繊維サンドイッチ補強部材１の両端の垂直補強リブ４ｂが梁１５の表面に接するように配置し、垂直補強リブ４ｂに形成した固定ボルト挿通孔５を通してアンカーボルト９を打ち込み固定する。鉄筋コンクリート梁１４にあと施工アンカー１３を埋め込み、あと施工アンカー１３の突出部を鉄筋コンクリート柱６と鉄筋コンクリート梁１４の交差部と繊維サンドイッチ補強部材１との空隙に配筋した軸方向筋１０とフープ筋１３の近傍に位置させる。あと施工アンカー１３の突出部を軸方向筋１０とフープ筋１３の近傍に位置させることにより、鉄筋コンクリート柱６と鉄筋コンクリート梁１４と固化した硬化性充填材との一体化が促進され耐震性能が向上する。図１０では、鉄筋コンクリート柱６と鉄筋コンクリート梁１５の交差部の一面側の耐震補強を図示しているが、鉄筋コンクリート柱６と鉄筋コンクリート梁１５の交差部の反対側の面側も同様に耐震補強する。   FIG. 10 is a diagram showing an example in which the fiber sandwich reinforcing member 1 is applied to the seismic reinforcement at the intersection of the reinforced concrete column 6 and the reinforced concrete beam 15. The vertical reinforcing ribs 4b are arranged at the intersections of the reinforced concrete columns 5 and the reinforced concrete beams 14 so that the vertical reinforcing ribs 4b at both ends of the pair of L-shaped fiber sandwich reinforcing members 1 are in contact with the surface of the beam 15 and fixed to the vertical reinforcing ribs 4b. The anchor bolt 9 is driven and fixed through the bolt insertion hole 5. The post-construction anchor 13 is embedded in the reinforced concrete beam 14, and the protruding portion of the post-construction anchor 13 is arranged in the gap between the reinforced concrete column 6 and the intersection of the reinforced concrete beam 14 and the fiber sandwich reinforcing member 1, and the axial reinforcement 10 and the hoop reinforcement 13. Located in the vicinity of By positioning the protruding portion of the post-construction anchor 13 in the vicinity of the axial reinforcement 10 and the hoop reinforcement 13, integration of the reinforced concrete column 6, the reinforced concrete beam 14, and the solidified curable filler is promoted and the seismic performance is improved. . In FIG. 10, the seismic reinforcement of one surface side of the intersection of the reinforced concrete column 6 and the reinforced concrete beam 15 is illustrated, but the surface side opposite to the intersection of the reinforced concrete column 6 and the reinforced concrete beam 15 is also seismically reinforced.

図１１は、鉄筋コンクリート柱６、６間に形成された鉄筋コンクリート壁１６の耐震補強に繊維サンドイッチ補強部材１を適用した例を示す図である。鉄筋コンクリート柱６、６間に形成された鉄筋コンクリート壁１６の両側に上面視一文字形の繊維サンドイッチ補強部材１を横方向と縦方向に連設して配置する。両端に位置する繊維サンドイッチ補強部材１の垂直補強リブ４ｂを鉄筋コンクリート柱６の一面と接するようにし、垂直補強リブ４ｂに形成した固定ボルト挿通孔５を通してアンカーボルト９を打ち込み固定する。床構造７への固定や、上部に積み上げていく構成、硬化性充填材の充填工程は、断面矩形の鉄筋コンクリート柱６の耐震補強と同様であるので説明を省略する。   FIG. 11 is a view showing an example in which the fiber sandwich reinforcing member 1 is applied to the seismic reinforcement of the reinforced concrete wall 16 formed between the reinforced concrete columns 6 and 6. On both sides of a reinforced concrete wall 16 formed between the reinforced concrete columns 6, 6, the fiber sandwich reinforcing members 1 having a single letter in top view are arranged continuously in the horizontal direction and the vertical direction. The vertical reinforcing rib 4b of the fiber sandwich reinforcing member 1 located at both ends is brought into contact with one surface of the reinforced concrete column 6, and the anchor bolt 9 is driven and fixed through the fixing bolt insertion hole 5 formed in the vertical reinforcing rib 4b. Since the fixing to the floor structure 7, the construction of stacking the upper part, and the filling process of the curable filler are the same as the seismic reinforcement of the reinforced concrete column 6 having a rectangular cross section, the description thereof is omitted.

図１２は、断面Ｈ型の鉄骨柱１１の一面側にのみの耐震補強に繊維サンドイッチ補強部材１を適用した例を示す図である。断面Ｈ型の鉄骨柱１１の一面側の両端にそれぞれ上面視Ｌ字形の繊維サンドイッチ補強部材１の垂直補強リブ４ｂが接するように配置し、垂直補強リブ４ｂと鉄骨柱１１を溶接等の手段により固定する。一対の上面視Ｌ字形の繊維サンドイッチ補強部材１に上面視一文字形の繊維サンドイッチ補強部材を連結して断面Ｈ型の鉄骨柱１１の一面側に繊維サンドイッチ補強部材１に囲まれた硬化性充填材の充填空隙を形成する。断面Ｈ型の鉄骨柱１１の一面側に硬化性充填材との一体化を促進する複数の定着棒１７を一端を鉄骨柱１１に溶接して配置する。   FIG. 12 is a diagram showing an example in which the fiber sandwich reinforcing member 1 is applied to seismic reinforcement only on one side of the steel column 11 having an H-shaped cross section. The vertical reinforcing ribs 4b of the fiber sandwich reinforcing member 1 having an L-shape in top view are in contact with both ends on one surface side of the steel column 11 having an H-shaped cross section, and the vertical reinforcing ribs 4b and the steel column 11 are joined by means such as welding. Fix it. A pair of L-shaped fiber sandwich reinforcing members 1 in top view and a single-faced fiber sandwich reinforcing member in top view are connected to one side of the steel pillar 11 having an H-shaped cross section and surrounded by the fiber sandwich reinforcing member 1. The filling void is formed. A plurality of fixing rods 17 that promote integration with the curable filler are arranged on one surface side of the steel column 11 having an H-shaped section by welding one end to the steel column 11.

以上のように、本発明の構造物の耐震補強構造は、２枚の薄肉鋼板の間に大きな付着力で連続繊維シートが付着させた繊維サンドイッチ補強部材で形成しているため、大きな引張強度と減衰性能を有する永久型枠とすることが可能となり、耐震性に優れた構造物耐震構造とすることが可能となる。   As described above, since the seismic reinforcement structure of the structure of the present invention is formed of the fiber sandwich reinforcing member in which the continuous fiber sheet is adhered with a large adhesion force between the two thin steel plates, a high tensile strength and It becomes possible to make a permanent mold having a damping performance, and it is possible to make a structure earthquake-resistant structure having excellent earthquake resistance.

１：繊維シートサンドイッチ補強部材、２：外側薄肉鋼板、２ａ：外側本体部、２ｂ：上水平補強リブ、２ｃ：下水平補強リブ、３：連続繊維シート、４：内側薄肉鋼板、４ａ：内側本体部、４ｂ：垂直補強リブ、５：固定ボルト挿通孔、６：鉄筋コンクリート柱、７：床構造、８：固定ボルト、９：アンカーボルト、１０：軸方向筋、１１：鉄骨柱、１２：鉄骨コンクリート柱、１３：フープ筋、１４：あと施工アンカー、１５：鉄筋コンクリート梁、１６：鉄筋コンクリート壁、１７：定着棒


1: Fiber sheet sandwich reinforcing member, 2: Outer thin steel plate, 2a: Outer main body, 2b: Upper horizontal reinforcing rib, 2c: Lower horizontal reinforcing rib, 3: Continuous fiber sheet, 4: Inner thin steel plate, 4a: Inner main body Part, 4b: vertical reinforcing rib, 5: fixing bolt insertion hole, 6: reinforced concrete column, 7: floor structure, 8: fixing bolt, 9: anchor bolt, 10: axial reinforcement, 11: steel column, 12: steel concrete Column, 13: Hoop reinforcement, 14: Post-construction anchor, 15: Reinforced concrete beam, 16: Reinforced concrete wall, 17: Anchor rod


Claims (6)

鉄筋コンクリート構造物、鉄骨コンクリート構造物及び鉄骨構造のいずれかの構造物の耐震補強構造であって、
補強対象の構造物に対して硬化性充填材を充填する空隙を設けて配置され外側本体部の上下に水平補強リブを形成した外側薄肉鋼板と内側本体部に垂直補強リブを形成した内側薄肉鋼板との間の水平補強リブ及び垂直補強リブ以外の外側本体部と内側本体部の間に配置される連続繊維シートとからなる繊維シートサンドイッチ補強部材と、
コンクリート構造物と繊維シートサンドイッチ補強部材との空隙に充填される硬化性充填材と、
からなることを特徴とする構造物の耐震補強構造。 A seismic reinforcement structure for a reinforced concrete structure, a steel concrete structure, or a steel structure,
Inner thin steel sheet formed with vertical stiffening ribs on the outside thin steel plate and the inner body portion to form a horizontal reinforcing ribs above and below the outer body portion is arranged with a gap to be filled with curable filler to the structure of the reinforcement object A fiber sheet sandwich reinforcing member composed of a continuous fiber sheet disposed between the outer main body portion and the inner main body portion other than the horizontal reinforcing rib and the vertical reinforcing rib,
A curable filler filled in the gap between the concrete structure and the fiber sheet sandwich reinforcing member;
Seismic reinforcement structure for structures characterized by comprising 前記水平補強リブと前記垂直補強リブに前記繊維シートサンドイッチ補強部材の連設、構造物への固定のための複数の固定ボルト挿通孔を形成することを特徴とする請求項１に記載の構造物の耐震補強構造。   The structure according to claim 1, wherein a plurality of fixing bolt insertion holes for connecting the fiber sheet sandwich reinforcing member to the horizontal reinforcing rib and the vertical reinforcing rib and fixing to the structure are formed. Seismic reinforcement structure. 上面視が一文字形、コ字形、Ｌ字形及び半円形の繊維シートサンドイッチ補強部材を用意し、使用個所に応じて選択して使用することを特徴とする請求項１又は２に記載の構造物の耐震補強構造。   The structure according to claim 1 or 2, wherein a fiber sheet sandwich reinforcing member having a single-letter shape, a U-shape, an L-shape, and a semi-circular shape is prepared and used depending on a place of use. Seismic reinforcement structure. 異なる繊維方向の連続繊維シートを複数枚積層して用いることを特徴とする請求項１ないし３のいずれか１項に記載の構造物の耐震補強構造。   The seismic reinforcement structure for a structure according to any one of claims 1 to 3, wherein a plurality of continuous fiber sheets having different fiber directions are laminated and used. 繊維シートサンドイッチ補強部材の硬化性充填材の充填側の薄肉鋼板の表面を粗面とすることを特徴とする請求項１ないし４のいずれか１項に記載の構造物の耐震補強構造。   5. The earthquake-proof reinforcement structure for a structure according to claim 1, wherein the surface of the thin steel plate on the filling side of the curable filler of the fiber sheet sandwich reinforcing member is a rough surface. 連続繊維シートの材料をカーボン繊維、アラミド繊維、ポリエチレン繊維及びポリアレート繊維のいずれかとすることを特徴とする請求項１ないし５のいずれか１項に記載の構造物の耐震補強構造。   The seismic reinforcement structure for a structure according to any one of claims 1 to 5, wherein a material of the continuous fiber sheet is any one of carbon fiber, aramid fiber, polyethylene fiber, and polyalate fiber.
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JP6161228B1 (en) * 2017-02-14 2017-07-12 槇谷 榮次 Seismic reinforcement structure for concrete structures
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JP2017075446A (en) * 2015-10-13 2017-04-20 栄次 槇谷 Concrete structure earthquake strengthening structure
JP6161228B1 (en) * 2017-02-14 2017-07-12 槇谷 榮次 Seismic reinforcement structure for concrete structures
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CN115012670A (en) * 2022-05-19 2022-09-06 上海师范大学 Multilayer anchoring connection method for fiber reinforced concrete beam-column joint

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