JP3500821B2 - Method and structure for reinforcing concrete structure - Google Patents
Method and structure for reinforcing concrete structureInfo
- Publication number
- JP3500821B2 JP3500821B2 JP33678995A JP33678995A JP3500821B2 JP 3500821 B2 JP3500821 B2 JP 3500821B2 JP 33678995 A JP33678995 A JP 33678995A JP 33678995 A JP33678995 A JP 33678995A JP 3500821 B2 JP3500821 B2 JP 3500821B2
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- reinforcing
- perforation
- reinforced resin
- resin composite
- 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
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- Bridges Or Land Bridges (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本願発明は、例えば道路橋、
鉄道橋等のコンクリート構造体の橋脚（柱状部）とその
フーチング（基礎）部分の補強に関し、特には地震など
の横揺れの力に対してもほとんど損傷を受けない様な、
補強方法及び構造に関するものである。BACKGROUND OF THE INVENTION The present invention relates to a road bridge,
Reinforcement of the pier (columnar part) and its footing (foundation) part of concrete structures such as railway bridges, especially so that they are hardly damaged even by the force of rolling such as an earthquake,
The present invention relates to a reinforcing method and a structure.
【０００２】[0002]
【従来の技術】近年、鉄筋コンクリート製道路橋、鉄道
橋等の橋状構造体においては、地震等の大きな力に対す
る耐震強度が問題となっており、充分な強度を与えるた
め補強を行うことが求められている。従来、こうした補
強の一方法として、橋脚の柱状部分を鉄板又は高強度の
シート又は糸で剪断強度、曲げ強度を補強する方法が知
られているが、かかる補強方法では、橋脚の柱状部分の
根元と基礎部分との境界部を補強することは出来なかっ
た。2. Description of the Related Art In recent years, in bridge-like structures such as reinforced concrete road bridges and railway bridges, the seismic strength against a large force such as an earthquake has become a problem, and reinforcement is required to give sufficient strength. Has been. Conventionally, a method of reinforcing the columnar portion of the pier with an iron plate or a high-strength sheet or thread to reinforce the shear strength and bending strength has been known as one of such reinforcement methods. It was not possible to reinforce the boundary between the foundation and the foundation.
【０００３】又、こうした柱状部と基礎部の境界部を補
強する方法としては柱状部表面又は柱状部表面に鉄板等
を張った表面と基礎上面に接してＬ字型綱を設置し例え
ば鉄筋製のアンカーを基礎部に埋めて留める方法等が知
られているが、かかる方法では充分な、特に横方向の大
きな力に対する強度が得られない問題がある。また、大
きな水平力が作用した場合には鋼材に塑性変形が生じ、
結果として大変形となり、補修する場合においても大が
かりなものとなっていた。As a method of reinforcing the boundary between the columnar portion and the foundation portion, an L-shaped rope is installed in contact with the surface of the columnar portion or the surface of the columnar portion covered with an iron plate or the like and the upper surface of the foundation. There is known a method of burying and anchoring the anchor in the base portion, but such a method has a problem that sufficient strength, especially against a large lateral force, cannot be obtained. Also, when a large horizontal force is applied, plastic deformation occurs in the steel,
As a result, it became a large deformation, and it was a large-scale one even when repairing.
【０００４】[0004]
【発明が解決しようとする課題】しかして、本発明の目
的は、柱状部と基礎部を有するコンクリート構造体の補
強を簡易にかつ充分に行う方法を提供することであっ
て、大きな横方向の力が働いた時でも導入したプレスト
レス力により柱状部のコンクリートの全断面強度が利用
できることにより、ほとんど損傷が生じない柱状部の補
強を行うことができ、且つ耐蝕性に優れ、元々の強度を
損なわずにコンクリート構造体の補強を行う補強方法及
び補強構造を提供することにある。SUMMARY OF THE INVENTION It is an object of the present invention, however, to provide a method for simply and sufficiently reinforcing a concrete structure having a columnar portion and a foundation portion, which has a large lateral direction. Even if a force is applied, the prestressing force introduced can utilize the entire cross-section strength of the concrete in the columnar part, so that the columnar part can be reinforced with almost no damage, and it has excellent corrosion resistance and original strength. It is to provide a reinforcing method and a reinforcing structure for reinforcing a concrete structure without damaging it.
【０００５】[0005]
【課題を解決するための手段】かかる本願発明の要旨
は、柱状部とその下端部に位置する基礎部を有するコン
クリート構造体の補強方法であって、柱状部の横側面か
ら基礎部内に通ずる斜め穿孔を設け、該穿孔内に繊維強
化樹脂複合材を挿入し、挿入後の基礎部穿孔内空間を無
収縮性充填剤で充填し、繊維強化樹脂複合材を緊張した
後に柱状部の穿孔内空間を無収縮性充填剤で充填し、そ
の後に緊張力を開放することにより柱状部にプレストレ
スを導入することを特徴とするコンクリート構造体の補
強方法、及び柱状部とその下端部に位置する基礎部を有
するコンクリート構造体の補強構造であって、柱状部の
横側面から基礎部内に通ずる斜め穿孔と、該穿孔内に挿
入された繊維強化樹脂複合材、及び挿入後の穿孔内空間
を充填する無収縮性充填剤を有し、該繊維強化樹脂複合
材により柱状部にプレストレスが導入されてなることを
特徴とするコンクリート構造体の補強構造に存する。SUMMARY OF THE INVENTION The gist of the present invention is a method for reinforcing a concrete structure having a columnar portion and a foundation portion located at the lower end of the columnar portion. Providing a perforation, inserting a fiber-reinforced resin composite material into the perforation, filling the inner space of the foundation perforation after insertion with a non-shrinkable filler, and after tensioning the fiber-reinforced resin composite material, the inner space of the perforation of the columnar part With a non-shrinkable filler, and then a prestress is introduced into the pillar by releasing the tension, and a foundation located at the pillar and its lower end. A reinforcing structure of a concrete structure having a portion, which fills an oblique perforation that leads from the lateral side surface of a columnar portion into the foundation part, a fiber-reinforced resin composite material inserted into the perforation, and a space inside the perforation after insertion. Non-contractile Has Hamazai consists in reinforcing the structure of the concrete structure characterized by comprising prestress is introduced to the columnar portion by the fiber-reinforced resin composite material.
【０００６】[0006]
【発明の実施の形態】以下に本発明の内容を説明する。
図１に本発明の補強方法の一例を示し、図２にその一部
の拡大図を示す。図１は高速道路等の橋脚（１：柱状
部）とフーチング（２：基礎部）を横から見た断面図で
あり、例えば高速道路等の道路面の長手方向は紙の前面
から背面に向かっており、特に、図中矢印方向の力に対
する強度が要求される。DETAILED DESCRIPTION OF THE INVENTION The contents of the present invention will be described below.
FIG. 1 shows an example of the reinforcing method of the present invention, and FIG. 2 shows an enlarged view of a part thereof. Fig. 1 is a cross-sectional view of a bridge pier (1: columnar section) and footing (2: foundation section) of a highway, etc., as seen from the side. For example, the longitudinal direction of the road surface of a highway is from the front to the back of the paper. In particular, strength against a force in the direction of the arrow in the figure is required.
【０００７】柱状部（１）及び基礎部（２）はいずれも
コンクリート製の構造体であり、通常は鉄筋入りのコン
クリート製からなる。柱状部は円柱状でも角柱状でもそ
の形状には特に限定はないが通常は角柱状であり、基礎
部も柱状部の横断面積より大きな断面積を有する形状で
あれば公知の形状を採用できる。本発明の補強方法で
は、この柱状部の横側面から基礎部内に通ずる斜め穿孔
（４）を設け、この穿孔内にロッド状の繊維強化樹脂複
合材（３）を挿入し、挿入後の基礎部穿孔内に無収縮性
の充填剤（５）を充填する。Each of the columnar portion (1) and the foundation portion (2) is a structure made of concrete, and usually made of concrete containing reinforcing bars. The shape of the columnar portion may be cylindrical or prismatic, and the shape thereof is not particularly limited, but is usually a prismatic shape, and the base portion may have a known shape as long as it has a cross-sectional area larger than the cross-sectional area of the columnar portion. In the reinforcing method of the present invention, oblique perforations (4) communicating from the lateral side surface of the columnar portion into the base portion are provided, and the rod-shaped fiber-reinforced resin composite material (3) is inserted into the perforation, and the base portion after insertion is inserted. Non-shrinkable filler (5) is filled in the perforations.
【０００８】斜め穿孔は、柱状部の横側面から対向する
横側面の下方に向けて斜行し、最終的に基礎部内部に達
する穿孔であれば良い。尚、斜め穿孔は、図１に示すと
おり、いったん柱状部内を貫通した後、コンクリート構
造体の外部に出て、その連続方向の基礎部内に通じる穿
孔としても良いが、すべてコンクリート構造体中を通る
穿孔とした方がプレストレス導入を効率的に確保できる
ので好ましい。The oblique perforation may be any perforation that obliquely extends from the lateral side surface of the columnar portion to the lower side of the opposing lateral side surface and finally reaches the inside of the base portion. As shown in FIG. 1, the oblique perforation may be a perforation that once penetrates the inside of the columnar part, then goes out of the concrete structure and leads to the foundation part in the continuous direction, but all the holes penetrate through the concrete structure. Perforation is preferable because prestress introduction can be efficiently ensured.
【０００９】斜め穿孔の設置位置としては、上部からの
力に対する強度を確保するために図中の角度（θ）がな
るべく大きくなるように例えば４５度以上となるように
配慮して設定すれば任意に設定し得る。The installation position of the oblique perforation may be arbitrarily set so that the angle (θ) in the drawing is as large as possible, for example, 45 ° or more, in order to secure the strength against the force from above. Can be set to.
【００１０】かかる斜め穿孔を設ける方法としてはドリ
ル等の公知の穿孔方法を採用することができるが、本発
明の好ましい態様としては、水圧を利用するウオーター
ジェット方式の穿孔方法を用いることが挙げられる。ウ
オータージェット方式の穿孔方法を用いると、除去され
た埃を簡単に除去できるという効果と共に、穿孔の内面
表面が図２に示す様に、適度な粗さを有するため、後に
充填する充填剤と穿孔内面との結合が良好になり補強強
度が増大するという効果が得られ、更には水圧の加減に
よって、被補強体である鉄筋コンクリートの鉄筋の切断
有無を制御することができ、切断しないで穿孔を設ける
ことができる点で利点を有する。A known drilling method such as a drill can be adopted as a method of providing such oblique drilling, but a preferred embodiment of the present invention is to use a water jet type drilling method utilizing water pressure. . When the water jet type perforation method is used, the removed dust can be easily removed, and since the inner surface of the perforation has an appropriate roughness as shown in FIG. The effect that the connection with the inner surface is improved and the reinforcing strength is increased, and by adjusting the water pressure, it is possible to control the presence or absence of cutting of the reinforcing bar of the reinforced concrete that is the object to be reinforced, and to provide a hole without cutting. It has an advantage in that it can be done.
【００１１】かかる穿孔は複数、例えば柱状部の横側面
に横方向に間隔を有しながら設置することがコンクリー
ト構造体に均一な強度を与える意味で好ましい。又、か
かる穿孔の断面形状は、通常の円形状の他に任意の形状
を採用することができ、例えば、穿孔の形状を縦長の楕
円形として、一つの穿孔内に複数本の繊維強化樹脂複合
材を縦に挿入すると、鉄筋コンクリートの縦鉄筋を切断
することがなく強度を増加することができるので好まし
い。It is preferable that a plurality of such perforations are provided, for example, on the lateral side surface of the columnar portion with a space between them in the lateral direction in order to give uniform strength to the concrete structure. In addition, the cross-sectional shape of such perforations can be any shape other than the ordinary circular shape. For example, the perforation shape is a vertically elongated elliptical shape, and a plurality of fiber-reinforced resin composites are included in one perforation. It is preferable to insert the material vertically because the strength can be increased without cutting the vertical reinforcing bars of the reinforced concrete.
【００１２】本願発明の繊維強化樹脂複合材としては、
いわゆるロッド状の繊維強化樹脂複合材が用いられ、例
えば従来、コンクリート構造体の緊張材として用いられ
るようなロッドを転用しても良い。かかる繊維強化樹脂
複合材は、公知の方法で長尺の繊維を長手方向に引き揃
えた状態で樹脂を含浸させ成形したものであり、繊維と
しては高強度の繊維が好ましく、例えば炭素繊維、ガラ
ス繊維、アラミド繊維、セラミック繊維等が挙げられる
が、強度及び耐久性の面で炭素繊維が好ましい。特に引
張強度が４００Ｋｇｆ／ｍｍ2以上の高強度繊維を用い
ることが好ましい。As the fiber-reinforced resin composite material of the present invention,
A so-called rod-shaped fiber-reinforced resin composite material is used, and for example, a rod conventionally used as a tension material for a concrete structure may be diverted. Such a fiber-reinforced resin composite material is obtained by impregnating and molding a long fiber in a state where the long fibers are aligned in the longitudinal direction by a known method, and the fiber is preferably a high-strength fiber, for example, carbon fiber or glass. Fiber, aramid fiber, ceramic fiber and the like can be mentioned, but carbon fiber is preferable from the viewpoint of strength and durability. In particular, it is preferable to use high strength fibers having a tensile strength of 400 Kgf / mm 2 or more.
【００１３】又、複合される樹脂としては、たとえばエ
ポキシ樹脂、不飽和ポリエステル樹脂、フェノール樹
脂、尿素樹脂、メラミン樹脂等の熱硬化樹脂及びナイロ
ン等のポリアミドポリオレフィン、ポリスチレン、ポリ
オキシメチレン飽和ポリエステル等の熱可塑性樹脂を挙
げることができ、特にはエポキシ樹脂が好ましいが、こ
れらは要求性能に応じて任意に選択すれば良い。Examples of the resin to be composited include thermosetting resins such as epoxy resin, unsaturated polyester resin, phenol resin, urea resin and melamine resin, polyamide polyolefin such as nylon, polystyrene and polyoxymethylene saturated polyester. A thermoplastic resin may be mentioned, and an epoxy resin is particularly preferable, but these may be arbitrarily selected according to the required performance.
【００１４】複合材中にしめる繊維の含有率は、任意に
選択しえるが、特性を有効に発揮するうえで繊維含有率
が３０〜７０体積％、好ましくは６０〜７０体積％のも
のが好ましい。本発明の繊維強化樹脂複合材としては、
特に複合材の引張強度が２３０Ｋｇｆ／ｍｍ2以上の高
強度繊維強化樹脂複合材を用いることが好ましい。尚、
ロッド状の繊維強化樹脂複合材の表面には、例えば、ラ
セン状の凹凸部を設ける、補強繊維を捲回する等の任意
の公知の表面処理を行うと、充填剤との接着性が向上
し、ひいては補強強度を向上せしめるので好ましい。The content of the fibers contained in the composite material can be arbitrarily selected, but the fiber content is preferably 30 to 70% by volume, more preferably 60 to 70% by volume in order to effectively exhibit the characteristics. As the fiber-reinforced resin composite material of the present invention,
In particular, it is preferable to use a high-strength fiber-reinforced resin composite material having a tensile strength of 230 Kgf / mm 2 or more. still,
On the surface of the rod-shaped fiber-reinforced resin composite material, for example, if any known surface treatment such as providing a spiral uneven portion or winding a reinforcing fiber is performed, the adhesiveness with the filler is improved. Further, it is preferable since the reinforcing strength can be improved.
【００１５】本願発明では、まず、穿孔内に繊維強化樹
脂複合材を挿入した後の基礎部空間内に、無収縮性の充
填剤、例えばセメント系グラウト剤を充填する。かかる
充填剤は公知の任意の方法を用いて、穿孔の上部から導
入しても良いし、チューブ等を用いて下部から圧入導入
しても良いが、気泡等を設けずに充填するには後者の方
が好ましい。In the present invention, first, a non-shrinkable filler, for example, a cement-based grout agent is filled in the space of the base portion after the fiber-reinforced resin composite material is inserted into the perforations. Such a filler may be introduced from the upper part of the perforation using any known method, or may be press-fitted and introduced from the lower part using a tube or the like, but the latter can be filled without forming bubbles or the like. Is preferred.
【００１６】充填剤が硬化した後に、図示は省略するが
常法により繊維強化樹脂複合材の緊張作業を行う。緊張
荷重としては、繊維強化樹脂複合材の引張破断荷重の６
０〜７０％程度とすることが好ましい。緊張作業終了後
に定着装置を用いて常法により定着を行う。After the filler is hardened, although not shown, the fiber-reinforced resin composite material is tensioned by a conventional method. As the tensile load, 6 of the tensile breaking load of the fiber-reinforced resin composite material is used.
It is preferably about 0 to 70%. After the tension work is completed, fixing is performed by a conventional method using a fixing device.
【００１７】定着作業が終了した柱状部の穿孔空間内
に、無収縮性の充填剤、例えばセメント系グラウト材を
充填する。かかる充填剤は公知の任意の方法を用いて、
穿孔の上部から導入しても良いし、チューブ等を用いて
下部から圧入導入しても良いが、気泡等を設けずに充填
するには、後者の方が好ましい。A non-shrinkable filler, for example, a cement-based grout material, is filled in the perforated space of the columnar portion after the fixing work. Such a filler is prepared by using any known method,
It may be introduced from the upper part of the perforation, or may be press-fitted and introduced from the lower part by using a tube or the like, but the latter is preferable for filling without forming bubbles or the like.
【００１８】柱状部の穿孔空間内の充填剤が硬化した後
に、定着装置を除去する。なお、モルタル等の材料で柱
状部の穿孔の表面部分の修復を行う等の態様も本願発明
の態様の一つである。After the filler in the perforated space of the columnar portion has hardened, the fixing device is removed. In addition, the aspect of repairing the surface portion of the perforation of the columnar portion with a material such as mortar is also one aspect of the present invention.
【００１９】その他、本発明の好ましい態様としては、
ロッド状繊維強化樹脂複合材がコンクリート外部に露出
し土中に存在する部分を上部からの力から保護するため
に、発泡スチロール等の弾性力を有する保護材（６）を
用いて覆うことが好ましい。本願発明のかかる補強用の
穿孔及び繊維強化樹脂複合材は、補強強度を確保するた
めに、複数、コンクリート柱状部の側面に間隔をもって
設けることが好ましく、図１に示す様に例えば左右交互
に設けるとバランスの面で好ましい。また、図１の補強
方法は、図中矢印の外力に対し効果を有する補強方法で
あるので、反対方向の外力にも補強効果を奏するために
は、位置をずらして図中のもう一対の柱状側面に対し、
斜め穿孔及び繊維強化樹脂複合材を設けることが好まし
い。In addition, as a preferred embodiment of the present invention,
In order to protect the portion of the rod-shaped fiber-reinforced resin composite material exposed to the outside of the concrete and existing in the soil from the force from above, it is preferable to cover with a protective material (6) having elastic force such as styrofoam. The reinforcing perforations and the fiber-reinforced resin composite material of the present invention are preferably provided at a plurality of intervals on the side surfaces of the concrete columnar portion in order to secure the reinforcing strength. For example, as shown in FIG. And in terms of balance. Further, since the reinforcing method of FIG. 1 is a reinforcing method having an effect on the external force indicated by the arrow in the figure, in order to exert the reinforcing effect also on the external force of the opposite direction, the position is shifted and another pair of columnar members in the figure are used. To the side,
It is preferable to provide diagonal perforations and fiber reinforced resin composites.
【００２０】本発明の補強方法の好ましい態様として
は、この様に斜め穿孔及びロッド状の繊維強化樹脂複合
材による補強を行った後、柱状部の側面に、シート状又
は糸状の繊維強化樹脂複合材料を貼付または捲回して柱
状部の剪断補強および曲げ補強を行うことが挙げられ
る。かかる繊維強化樹脂複合材料の繊維及び樹脂として
は、本願発明のロッド状の繊維強化樹脂複合材の材料と
して挙げたものや公知のものが任意に採用しえる。In a preferred embodiment of the reinforcing method of the present invention, after the reinforcing by the oblique perforation and the rod-shaped fiber reinforced resin composite material as described above, the side surface of the columnar portion is provided with a sheet-shaped or thread-shaped fiber reinforced resin composite material. Examples of the method include attaching or winding a material to perform shear reinforcement and bending reinforcement of the columnar portion. As the fibers and resins of the fiber-reinforced resin composite material, those mentioned as the material of the rod-shaped fiber-reinforced resin composite material of the present invention and known materials can be arbitrarily adopted.
【００２１】[0021]
【発明の効果】本願発明の補強方法及び補強構造によれ
ば、鉄筋コンクリート構造製の橋のような柱状部（橋
脚）と基礎部（フーチング）を有する構造体に対し、地
震等の大きな横方向の外力が生じた場合でも、ほとんど
損傷を受けない構造体とすることができ、また無機繊維
からなる繊維強化樹脂複合材を用いるので耐蝕性にすぐ
れ、耐久性に優れた補強を達成することができる。ま
た、高強度の繊維強化樹脂複合材を用いることにより、
少ない本数の穿孔及び複合材によって高強度の補強がで
きるので、既存のコンクリート構造の強度を損なうこと
なく補強をすることができる。更に、本補強方法では、
既存の構造体の外形を変化することなく補強を達成でき
るので、外形変化を好まない構造物の補強に採用するこ
とができる。According to the reinforcing method and the reinforcing structure of the present invention, a structure having a columnar portion (pier) and a foundation portion (footing) such as a bridge made of a reinforced concrete structure can be applied in a large lateral direction such as an earthquake. Even if an external force is generated, the structure can be hardly damaged, and since the fiber-reinforced resin composite material made of the inorganic fiber is used, the corrosion resistance is excellent, and the reinforcement having excellent durability can be achieved. . In addition, by using a high-strength fiber-reinforced resin composite material,
Since a small number of perforations and composite materials enable high-strength reinforcement, it is possible to perform reinforcement without impairing the strength of the existing concrete structure. Furthermore, in this reinforcement method,
Since the reinforcement can be achieved without changing the outer shape of the existing structure, it can be adopted for the reinforcement of the structure that does not prefer the outer shape change.
【図１】本発明の補強方法及び補強構造を示す一例FIG. 1 is an example showing a reinforcing method and a reinforcing structure of the present invention.
【図２】図１の一部を示す拡大図FIG. 2 is an enlarged view showing a part of FIG.
１…鉄筋コンクリート製 橋脚（柱状部） ２…鉄筋コンクリート製 フーチング（基礎部） ３…繊維強化樹脂複合材 ４…穿孔 ５…無収縮性充填剤 ６…保護材 1 ... Reinforced concrete bridge pier (column) 2 ... Reinforced concrete footing (foundation) 3 ... Fiber reinforced resin composite 4 ... Perforation 5 ... Non-shrinkable filler 6 ... Protective material
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) E01D 22/00 E01D 19/02 E02D 27/00 E04H 12/22 E04G 23/02 ─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. 7 , DB name) E01D 22/00 E01D 19/02 E02D 27/00 E04H 12/22 E04G 23/02
Claims (3)
するコンクリート構造体の補強方法であって、柱状部の
横側面から基礎部内に通ずる斜め穿孔を設け、該穿孔内
に繊維強化樹脂複合材を挿入し、挿入後の基礎部穿孔内
空間を無収縮性充填剤で充填し、繊維強化樹脂複合材を
緊張した後に柱状部の穿孔内空間を無収縮性充填剤で充
填し、その後に緊張力を開放することにより柱状部にプ
レストレスを導入することを特徴とするコンクリート構
造体の補強方法。1. A method for reinforcing a concrete structure having a columnar portion and a foundation portion located at the lower end thereof, wherein a diagonal perforation communicating from the lateral side surface of the columnar portion into the foundation portion is provided, and the fiber-reinforced resin is provided in the perforation. Insert the composite, fill the inner space of the perforated base after insertion with a non-shrinkable filler, and after tensioning the fiber reinforced resin composite, fill the inner space of the perforated column with a non-shrinkable filler, then A method for reinforcing a concrete structure, which comprises introducing a prestress to a columnar portion by releasing a tension force on the column.
コンクリート構造体外部に露出する部分を保護材で覆う
ことを特徴とする請求項１記載のコンクリート構造体の
補強方法。2. The method of reinforcing a concrete structure according to claim 1, wherein the fiber-reinforced resin composite material inserted into the perforation covers a portion exposed to the outside of the concrete structure with a protective material.
するコンクリート構造体の補強構造であって、柱状部の
横側面から基礎部内に通ずる斜め穿孔と、該穿孔内に挿
入された繊維強化樹脂複合材、及び挿入後の穿孔内空間
を充填する無収縮性充填剤を有し、該繊維強化樹脂複合
材により柱状部にプレストレスが導入されてなることを
特徴とするコンクリート構造体の補強構造。3. A reinforcing structure for a concrete structure having a columnar portion and a foundation portion located at the lower end portion thereof, wherein the diagonal perforation extends from the lateral side surface of the columnar portion into the foundation portion, and the fiber inserted into the perforation. A reinforced resin composite material, and a non-shrinkable filler that fills the inner space of a hole after insertion, wherein a prestress is introduced into a columnar portion by the fiber reinforced resin composite material, Reinforced structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33678995A JP3500821B2 (en) | 1995-12-25 | 1995-12-25 | Method and structure for reinforcing concrete structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33678995A JP3500821B2 (en) | 1995-12-25 | 1995-12-25 | Method and structure for reinforcing concrete structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09177034A JPH09177034A (en) | 1997-07-08 |
| JP3500821B2 true JP3500821B2 (en) | 2004-02-23 |
Family
ID=18302709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33678995A Expired - Fee Related JP3500821B2 (en) | 1995-12-25 | 1995-12-25 | Method and structure for reinforcing concrete structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3500821B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168016A (en) * | 2016-08-30 | 2016-11-30 | 东莞理工学院 | Floorings ruggedized construction and floorings reinforcement means |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4253785B2 (en) * | 2001-03-13 | 2009-04-15 | 清水建設株式会社 | Reinforcing method for reinforced concrete structure and reinforced concrete structure |
| JP4663541B2 (en) * | 2006-02-07 | 2011-04-06 | 東日本旅客鉄道株式会社 | Seismic reinforcement method for existing concrete pier |
| JP2007247302A (en) * | 2006-03-17 | 2007-09-27 | Central Japan Railway Co | Reinforcement structure and reinforcement construction method of bridge pier |
| JP2008115584A (en) * | 2006-11-02 | 2008-05-22 | Penta Ocean Construction Co Ltd | Method of reinforcing reinforced concrete structure |
-
1995
- 1995-12-25 JP JP33678995A patent/JP3500821B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168016A (en) * | 2016-08-30 | 2016-11-30 | 东莞理工学院 | Floorings ruggedized construction and floorings reinforcement means |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09177034A (en) | 1997-07-08 |
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