JPH09221719A - Method for reinforcing pier - Google Patents

Method for reinforcing pier

Info

Publication number
JPH09221719A
JPH09221719A JP5545296A JP5545296A JPH09221719A JP H09221719 A JPH09221719 A JP H09221719A JP 5545296 A JP5545296 A JP 5545296A JP 5545296 A JP5545296 A JP 5545296A JP H09221719 A JPH09221719 A JP H09221719A
Authority
JP
Japan
Prior art keywords
steel plate
pier
plate
reinforcing
frame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP5545296A
Other languages
Japanese (ja)
Other versions
JP2742994B2 (en
Inventor
Sachiro Fujita
幸朗 藤田
Original Assignee
Sho Bond Constr Co Ltd
ショーボンド建設株式会社
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 Sho Bond Constr Co Ltd, ショーボンド建設株式会社 filed Critical Sho Bond Constr Co Ltd
Priority to JP5545296A priority Critical patent/JP2742994B2/en
Publication of JPH09221719A publication Critical patent/JPH09221719A/en
Application granted granted Critical
Publication of JP2742994B2 publication Critical patent/JP2742994B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To restrain the lower end of a reinforcing steel plate even if the plate is formed into a hinge due to a great earthquake by restraining the lower end of the reinforcing steel plate on the outer surface of a pier frame using a structure in which concrete is placed on a steel plate, with its lower end restrained, to which a stud is attached. SOLUTION: A reinforcing steel plate 2 is divided into a corner part and a center part of a pier frame 1 and placed along the outer surface of the frame 1, and a lower end restraining steel plate 3, on which a plurality of studs 4 are erected, is welded integrally to the lower end of the plate 2. A bracket 5 fixed to the plate 2 fixes an anchor bars 7 for fixing the plate 2 to a footing 6 of the frame 1. The plate 2 integral to the plate 3 is temporarily fixed to the frame 1 by means of bolts, and a lower end restraining steel plate 11 making a pair with the plate 3, in which a plurality of studs 12 are oriented inwards, is spaced apart from the plate 3 by a predetermined interval at the corner part and center part of the frame 1 and adjoining parts are welded. And the frame 1 is attached to the plate 2 and concrete is placed between the plate 3 and the plate 11.

Description

【発明の詳細な説明】Detailed Description of the Invention
【0001】[0001]
【発明の属する技術分野】本発明は、既設橋梁の橋脚の
補強工法に関する。
TECHNICAL FIELD The present invention relates to a method for reinforcing a pier of an existing bridge.
【0002】[0002]
【従来の技術】既設の橋梁の補強では、橋全体系のじん
性を向上させて粘り強い構造とすることが重要である。
このため鉄筋コンクリート橋脚で支持された橋では、じ
ん性と耐力の向上が求められる。橋脚躯体の地震時保有
水平力を向上させると、大きな地震を受けた場合に、橋
脚躯体から基礎構造物へ伝達される地震力も大きくな
り、基礎を含めた大規模な補強が必要となる場合があ
る。基本的にはできるだけ橋脚のじん性を向上させ耐力
が過度に上がらないような工法が望ましい。しかし、橋
脚躯体の耐力が不足する場合において橋脚のじん性の向
上だけに期待すると、地震後に橋脚に大きな残留変異が
生じることもある。
2. Description of the Related Art In reinforcing existing bridges, it is important to improve the toughness of the entire bridge system and to make the structure tough.
For this reason, bridges supported by reinforced concrete piers are required to have improved toughness and strength. Improving the horizontal strength of the pier structure during an earthquake increases the seismic force transmitted from the pier structure to the foundation structure in the event of a large earthquake, which may require large-scale reinforcement including the foundation. is there. Basically, it is desirable to use a construction method that improves the toughness of the pier and minimizes the proof stress as much as possible. However, if only the toughness of the pier is expected to improve when the pier skeleton is insufficient, large residual mutations may occur in the pier after the earthquake.
【0003】そこで、基礎が支持できる範囲内で、所要
の橋脚躯体の耐力向上を図り、じん性と耐力の向上をバ
ランスさせた工法として、曲げ耐力制御式鋼板巻立て工
法が採用されている(社団法人日本道路協会・「兵庫県
南部地震より被災した道路橋の復旧に係る仕様」の準用
に関する参考資料(案)・平成7年6月)。
Therefore, as a method of improving the strength of a required pier skeleton within a range where the foundation can be supported and balancing the improvement of toughness and strength, a steel sheet winding method of bending strength control type is adopted ( Reference materials (draft) for the mutatis mutandis of the Japan Road Association, "Specifications for Restoration of Road Bridges Damaged by the Hyogoken-Nanbu Earthquake" (June 1995).
【0004】この工法は、図5及び図6に示すように、
断面方形の橋脚躯体1を補強鋼板2で巻き、補強鋼板2
と橋脚躯体1を無収縮モルタル又はエポキシ樹脂等によ
り一体化させ、橋脚基部では補強鋼板2とフーチング6
との間に5〜10cmの間隔を設け、ブラケット5を介
して、アンカー筋7で補強鋼板2をフーチング6に定着
するというものである。
[0004] As shown in Figs. 5 and 6,
A bridge pier body 1 having a rectangular cross section is wound around a reinforcing steel plate 2, and the reinforcing steel plate 2
And the pier frame 1 are integrated by non-shrink mortar or epoxy resin, and the reinforcing steel plate 2 and footing 6 are provided at the base of the pier.
And the reinforcing steel plate 2 is fixed to the footing 6 by the anchor bar 7 via the bracket 5.
【0005】そして、この工法においては、大きな地震
を受けて、橋脚下端がヒンジ塑性化した場合に備え、補
強鋼板2の下端にH鋼20等の型鋼が設置されて、補強
鋼板2の下端を拘束して、補強鋼板2の下端のはね止り
を防止する措置が取られている。
[0005] In this construction method, in order to prepare for the case where the lower end of the pier is hinge-plasticized due to a large earthquake, a mold steel such as H steel 20 is installed at the lower end of the reinforcing steel plate 2 and the lower end of the reinforcing steel plate 2 is fixed. Measures are taken to prevent the lower end of the reinforcing steel plate 2 from splashing by being restrained.
【0006】[0006]
【発明が解決しようとする課題】この工法において、型
鋼による補強鋼板の下端の拘束は、極めて効果的である
ことは認められるが幾つかの解決すべき課題を有する。
In this method, it is recognized that restraining the lower end of the reinforced steel sheet by the mold steel is extremely effective, but has some problems to be solved.
【0007】まず、型鋼の寸法は、橋脚躯体の寸法に合
わせ一定の計算式のもとに定められているため、多数の
大きさのものを用意しなければならず、また、型鋼は相
当の重量があるため施工性が劣り、部材間を連結する現
場溶接延長も長くなる。
[0007] First, since the dimensions of the shape steel are determined based on a fixed formula in accordance with the dimensions of the pier frame, a large number of sizes must be prepared. Due to the weight, the workability is inferior, and the field welding extension connecting the members becomes longer.
【0008】[0008]
【課題を解決するための手段】本発明は、このような課
題を解決するため、まず、橋脚の躯体の外面に補強鋼板
を取り付ける橋脚補強工法において、橋脚躯体の外面に
取り付ける補強鋼板の下端方に鋼板にスタッドを取り付
けた下端拘束鋼板をスタッドが外側に向くようにして一
体化するとともにこの下端拘束鋼板の外側に間隔を設け
て、上記下端拘束鋼板と対となる型枠を兼ねたスタッド
を取り付けた鋼板からなる下端拘束鋼板をスタッドが内
側に向くようにして位置させ、両下端拘束鋼板間にコン
クリートを打設することを特徴とする橋脚補強工法を提
供する。
SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention first provides a pier reinforcement method for attaching a reinforcing steel plate to the outer surface of a pier frame. The lower end constrained steel plate with the studs attached to the steel plate is integrated so that the studs face outward, and a space is provided outside the lower end constrained steel plate to form a stud that also serves as a formwork paired with the lower end constrained steel plate. Provided is a pier reinforcement method characterized in that a lower end constrained steel plate composed of an attached steel plate is positioned so that a stud faces inward, and concrete is poured between both lower end constrained steel plates.
【0009】また、このような課題を解決するため、橋
脚の躯体の外面に補強鋼板を取り付ける橋脚補強工法に
おいて、橋脚躯体の外面に取り付ける補強鋼板の下端方
にスタッドを取り付けた下端拘束鋼板をスタッドが外側
に向くようにして一体化し、フーチングにアンカー筋を
アンカー筋の上端が下端拘束鋼板の上端よりも上方に突
出した状態で定着するとともにその外側に上記下端拘束
鋼板と間隔を設けて、この下端拘束鋼板と対となる型枠
を兼ねたスタッドを取り付けた鋼板からなる下端拘束鋼
板をスタッドが内側に向くように位置させ、両下端拘束
鋼板間にコンクリートを打設するとともにその上方に突
出したアンカー筋部にもコンクリートを打設してアンカ
ー筋をコンクリート中に埋設して定着するようにしたこ
とを特徴とする橋脚補強工法を提供する。
In order to solve such a problem, in a pier reinforcement method for attaching a reinforcing steel plate to the outer surface of a pier frame, a lower end restraining steel plate having a stud attached to the lower end of the reinforcing steel plate attached to the outer surface of the pier frame is provided. Are integrated so that they face outward, and anchoring the footing to the footing with the upper end of the anchoring bar protruding above the upper end of the lower end restraint steel plate and providing a space with the lower end restraint steel plate outside thereof. A lower end restraint steel plate consisting of a steel plate attached with a stud that also serves as a formwork that forms a pair with the lower end restraint steel plate is positioned so that the stud faces inward, and concrete is poured between both lower end restraint steel plates and protruded upward. A bridge characterized in that concrete is also cast on the anchor streak and the anchor streak is buried in the concrete and settled. To provide a reinforcement method.
【0010】[0010]
【実施の形態】本発明の実施の形態を図1乃至図4に基
いて説明する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS.
【0011】まず、図1、図3、図4に基づき、本発明
の実施の形態の一つを説明する。ここで、図1は、実施
の形態を示す上方を省略した垂直断面図、図3は、図1
のA−A断面図、図4は、図3の分解図である。
First, an embodiment of the present invention will be described with reference to FIGS. 1, 3 and 4. Here, FIG. 1 is a vertical sectional view showing an embodiment in which the upper part is omitted, and FIG.
FIG. 4 is an exploded view of FIG. 3.
【0012】補強鋼板2は、橋脚躯体1の外面の角部と
央部とに分割され、角部では鋼板を折曲、中央部では平
状にして、それぞれ橋脚躯体1の外面に沿う形状に形成
され、その下方に、それぞれの形状に沿う適宜の高さの
下端拘束鋼板3を溶接又はエポキシ樹脂等の接着剤によ
る接着又はボルト止めにより一体化してなる。下端拘束
鋼板3は、その外面の幅員方向及び高さ方向に複数のス
タッド4が外側に向くようにして植設されてなる。5は
補強鋼板2を橋脚躯体1のフーチング6に定着させるア
ンカー筋7を固着するブラケットで、補強鋼板2に固着
されて、アンカー筋7を挿通する挿通孔8が形成されて
なる。アンカー筋7は、下方がフーチング6への定着部
分をなし、上方がねじ切りされてブラケット5の挿通孔
8に挿通されてナット9により固着されてなる。なお、
アンカー筋をブラケット5に固定する構造は公知のもの
である。
The reinforcing steel plate 2 is divided into a corner portion and a center portion of the outer surface of the pier frame 1, and the steel plate is bent at the corner portion and flattened at the central portion to form a shape along the outer surface of the pier frame 1. The lower end constrained steel plate 3 having an appropriate height along each shape is integrated thereunder by welding, bonding with an adhesive such as epoxy resin, or bolting. The lower end constraining steel plate 3 is planted so that the plurality of studs 4 face outward in the width direction and the height direction of the outer surface thereof. Reference numeral 5 denotes a bracket for fixing an anchoring bar 7 for fixing the reinforcing steel plate 2 to the footing 6 of the pier frame 1. The bracket 5 is fixed to the reinforcing steel plate 2 and has an insertion hole 8 through which the anchoring bar 7 is inserted. The lower portion of the anchoring bar 7 forms a fixing portion to the footing 6, and the upper portion is threaded, inserted into the insertion hole 8 of the bracket 5, and fixed by a nut 9. In addition,
The structure for fixing the anchor bar to the bracket 5 is known.
【0013】11は、前述した下端拘束鋼板3と対とな
る下端拘束鋼板で、橋脚躯体1の角部では折曲され、央
部では平状にして、下端拘束鋼板3に対応できる大きさ
に形成され、幅員方向及び高さ方向に複数のスタッド1
2が植設されてなっている。
Numeral 11 denotes a lower end constrained steel plate which is paired with the lower end constrained steel plate 3 described above. The lower end constrained steel plate 3 is bent at the corners of the pier frame 1 and flattened at the central portion so as to have a size capable of coping with the lower end constrained steel plate 3. A plurality of studs 1 formed in the width direction and the height direction
Two are planted.
【0014】下端拘束鋼板3を一体とした補強鋼板2
は、橋脚躯体1の角部と央部にそれぞれ配置されて、橋
脚躯体1にボルトで仮止めされ、下端拘束鋼板11は、
フーチング6上に位置合せのために置かれた発泡スチロ
ール14上にスタッド12が内側に向くようにして、橋
脚躯体1の角部と央部にそれぞれ下端拘束鋼板3との間
に一定間隔を設けて位置させられ、型枠を兼ねる。それ
ぞれの隣接部は溶接されて連続する。
Reinforcing steel plate 2 with lower end constraining steel plate 3 integrated
Are arranged at the corner and the center of the pier frame 1, respectively, and temporarily fixed to the pier frame 1 with bolts.
The studs 12 face inward on the styrofoam 14 placed for positioning on the footing 6, and a fixed interval is provided between the lower end restraining steel plate 3 at each of the corner and the center of the pier frame 1. It is positioned and doubles as a formwork. Each adjacent part is welded and continuous.
【0015】アンカー筋7は、フーチング6にその上面
に形成された削孔15に挿入され、アンカー筋7と削孔
15の径間にエポキシ樹脂等の接着剤が流入されて定着
される。
The anchor bar 7 is inserted into a hole 15 formed on the upper surface of the footing 6, and an adhesive such as epoxy resin flows between the anchor bar 7 and the hole 15 to be fixed.
【0016】橋脚躯体1と補強鋼板2との間には、樹脂
モルタル又はエポキシ樹脂等の接着剤が流し込まれて両
者は接着により一体となる。
An adhesive such as resin mortar or epoxy resin is poured between the pier frame 1 and the reinforcing steel plate 2, and the two are integrated by bonding.
【0017】下端拘束鋼板3と下端拘束鋼板11との間
には、コンクリートが打設される。なお、10、13は
補助鉄筋である。
Concrete is poured between the lower end restraint steel plate 3 and the lower end restraint steel plate 11. In addition, 10 and 13 are auxiliary reinforcing bars.
【0018】このようにして、橋脚躯体の外面に補強鋼
板を取り付ける補強工法において、補強構造と補強鋼板
の下端部を拘束する構造が完成する。
In this way, in the reinforcing method of attaching the reinforcing steel plate to the outer surface of the pier frame, the reinforcing structure and the structure for restraining the lower end of the reinforcing steel plate are completed.
【0019】つぎに、図2に基づき、本発明の別の実施
の形態を説明する。なお、図3、図4はこの実施の形態
に援用する。
Next, another embodiment of the present invention will be described with reference to FIG. 3 and 4 are incorporated in this embodiment.
【0020】補強鋼板2は、橋脚躯体1の外面の角部と
央部とに分割され、角部では、鋼板を折曲、央部では平
状にして、それぞれ橋脚躯体1の外面に沿う形状に形成
され、その下方に、それぞれの形状に沿う適宜の高さの
下端拘束鋼板3を溶接又はエポキシ樹脂等の接着剤によ
る接着又はボルト止めにより一体化してなる。下端拘束
鋼板3は、その外面の幅員方向及び高さ方向に複数のス
タッド4が外側に向くようにして植設される。7はアン
カー筋で、アンカー筋7は下方がフーチング6への定着
部を有し、定着された状態で、上端が下端拘束鋼板3の
上端より上方に突出する長さを有する。なお、16は補
強鋼板2に取り付けられたスタッドで、後述するアンカ
ー7を埋設するコンクリートと一体となる。
The reinforcing steel plate 2 is divided into a corner portion and a center portion of the outer surface of the pier frame 1. The steel plate is bent at the corner portion and flattened at the center portion, and each has a shape along the outer surface of the pier frame 1. The lower end constrained steel plate 3 having an appropriate height along each shape is integrated thereunder by welding, bonding with an adhesive such as epoxy resin, or bolting. The lower end restraint steel plate 3 is implanted such that the plurality of studs 4 face outward in the width direction and the height direction of the outer surface. Reference numeral 7 denotes an anchor bar, and the lower portion of the anchor bar 7 has a fixing portion to the footing 6, and has a length whose upper end protrudes above the upper end of the lower end restraining steel plate 3 in a fixed state. In addition, 16 is a stud attached to the reinforcing steel plate 2 and is integrated with concrete in which the anchor 7 described later is embedded.
【0021】11は、前述した下端拘束鋼板3と対とな
る下端拘束鋼板で、橋脚躯体1の角部では折曲され、央
部では平状にして、下端拘束鋼板3に対応できる大きさ
に形成され、幅員方向及び高さ方向に複数のスタッド1
2が植設されてなっている。
Numeral 11 denotes a lower end constrained steel plate which is paired with the lower end constrained steel plate 3 described above. The lower end constrained steel plate 3 is bent at the corners of the pier frame 1 and flattened at the central portion to have a size which can accommodate the lower end constrained steel plate 3. A plurality of studs 1 formed in the width direction and the height direction
Two are planted.
【0022】下端拘束鋼板3を一体とした補強鋼板2
は、橋脚躯体1の角部と央部に配置されて、橋脚躯体1
にボルトで仮止めされ、下端拘束鋼板11は、フーチン
グ6上に位置合せのために置かれた発泡スチロール14
上にスタッド12が内側に向くようにして、橋脚躯体1
の角部と央部にそれぞれ下端拘束鋼板3との間に一定間
隔を設けて位置させられ、型枠を兼ねる。それぞれの隣
接部は溶接されて連続する。
Reinforced steel plate 2 integrated with lower end restraint steel plate 3
Are located at the corners and the center of the pier skeleton 1.
And the lower end restraint steel plate 11 is placed on the footing 6 for alignment with a polystyrene foam 14.
With the stud 12 facing upward, the pier frame 1
Are located at a constant interval between the lower end restraint steel plate 3 at the corner and the center, respectively, and also serve as a mold. Each adjacent part is welded and continuous.
【0023】アンカー筋7は、フーチングにその上面に
形成された削孔15に挿通され、アンカー筋7と削孔1
5の径間にエポキシ樹脂等の接着剤が流入されて定着さ
れる。
The anchor bar 7 is inserted into a hole 15 formed on the upper surface of the footing, and the anchor bar 7 and the hole 1 are drilled.
An adhesive such as an epoxy resin flows into the gap 5 and is fixed.
【0024】下端拘束鋼板3と下端拘束鋼板11との間
には、コンクリートが打設される。なお、10、13は
補助鉄筋である。
Concrete is cast between the lower end restraint steel plate 3 and the lower end restraint steel plate 11. In addition, 10 and 13 are auxiliary reinforcing bars.
【0025】橋脚躯体1と補強鋼板2との間には、樹脂
モルタル又はエポキシ樹脂等の接着剤が流し込まれて、
両者は接着により一体となる。
An adhesive such as resin mortar or epoxy resin is poured between the pier frame 1 and the reinforcing steel plate 2,
Both are integrated by adhesion.
【0026】このようにして、橋脚躯体の外面に補強鋼
板を取り付ける補強工法において、補強構造と補強鋼板
の下端部を拘束する構造が完成する。
In this manner, in the reinforcing method for attaching the reinforcing steel plate to the outer surface of the pier frame, the reinforcing structure and the structure for restraining the lower end of the reinforcing steel plate are completed.
【0027】[0027]
【発明の効果】本発明は、上述のようにしてなるので、
つぎの効果を有する。
Since the present invention has been made as described above,
It has the following effects.
【0028】請求項1乃至2において、橋脚躯体の外面
に取り付けた補強鋼板の下端方は、スタッドが取り付け
られた1対の下端拘束鋼板にコクリートが打設されて合
成断面が形成された構造によって拘束されるので、大き
な地震によってヒンジ化した場合でも補強鋼板の下端部
を拘束する。
In the first and second aspects, the lower end of the reinforcing steel plate attached to the outer surface of the pier frame has a structure in which a co-crete is cast into a pair of lower end restraining steel plates to which studs are attached to form a composite cross section. Because it is constrained, the lower end of the reinforced steel plate is constrained even when hinged due to a large earthquake.
【0029】下端拘束鋼板と補強鋼板の一体化は、工場
で簡単に行うことができ、また、この一体物は、型鋼に
比し、軽量で簡素であるため運びやすく、作業性がよ
い。
The integration of the lower end restraint steel plate and the reinforcing steel plate can be easily carried out in a factory, and this integrated product is lighter and simpler than a die steel, so that it is easy to carry and has good workability.
【0030】対となる下端拘束鋼板間の間隔を外側に位
置する型枠を兼ねた下端拘束鋼板を移動するだけで変化
させることができるので、外側に位置する型枠を兼ねた
下端拘束鋼板は、橋脚躯体の複数の寸法に対処すること
ができる。
Since the distance between the pair of lower constrained steel plates can be changed simply by moving the lower constrained steel plates also serving as the formwork positioned on the outside, the lower constrained steel plates also serving as the formwork positioned on the outer side can be changed. In addition, multiple dimensions of the pier body can be dealt with.
【0031】請求項2において、フーチングに定着され
るアンカー筋の上端が、補強鋼板に取り付けた下端拘束
鋼板の上端よりも上方に突出した状態にあり、このアン
カー筋が、コンクリートの打設によりコンクリートに埋
設され、かつ、下端拘束鋼板のスタッドとともにコンク
リートに定着されるので、従来のように補強鋼板にブラ
ケットを取り付ける必要がない。
According to the second aspect, the upper end of the anchoring bar fixed to the footing projects upward from the upper end of the lower end restraining steel plate attached to the reinforcing steel plate, and the anchoring bar is formed by casting concrete. And is fixed to the concrete together with the studs of the lower end restraining steel plate, so that there is no need to attach a bracket to the reinforcing steel plate as in the related art.
【図面の簡単な説明】[Brief description of drawings]
【図1】本発明の実施の形態を示す垂直断面図である。FIG. 1 is a vertical sectional view showing an embodiment of the present invention.
【図2】別の実施の形態を示す垂直断面図である。FIG. 2 is a vertical sectional view showing another embodiment.
【図3】図1及び図2のA−A断面図である。FIG. 3 is a cross-sectional view taken along the line AA of FIGS. 1 and 2.
【図4】図3の分解図である。FIG. 4 is an exploded view of FIG.
【図5】従来例を示す垂直断面図である。FIG. 5 is a vertical sectional view showing a conventional example.
【図6】図5のB−B断面図である。FIG. 6 is a sectional view taken along line BB of FIG. 5;
【符号の説明】[Explanation of symbols]
1 橋脚躯体 2 補強鋼板 3 下端拘束鋼板 4 スタッド 5 ブラケット 6 フーチング 7 アンカー筋 11 下端拘束鋼板 12 スタッド 16 スタッド DESCRIPTION OF SYMBOLS 1 Bridge pier body 2 Reinforcement steel plate 3 Lower end restraint steel plate 4 Stud 5 Bracket 6 Footing 7 Anchor bar 11 Lower end restraint steel plate 12 Stud 16 Stud

Claims (2)

    【特許請求の範囲】[Claims]
  1. 【請求項1】 補強鋼板を橋脚躯体の外面に取り付ける
    橋脚補強工法において、橋脚躯体の外面に取り付ける補
    強鋼板下端方に鋼板にスタッドを取り付けた下端拘束鋼
    板をスタッドが外側に向くようにして一体化するととも
    に、この下端拘束鋼板の外側に間隔を設けて、上記下端
    拘束鋼板と対となる型枠を兼ねたスタッドを取り付けた
    鋼板からなる下端拘束鋼板をスタッドが内側に向くよう
    にして位置させ、両下端拘束鋼板間にコンクリートを打
    設することを特徴とする橋脚補強工法。
    1. A pier reinforcement method for attaching a reinforcing steel plate to an outer surface of a pier skeleton, wherein a lower end restraining steel plate having a stud attached to a steel plate at a lower end of the reinforcing steel plate attached to the outer surface of the pier skeleton is integrated such that the stud faces outward. Along with the lower end restraint steel plate, an interval is provided, and a lower end restraint steel plate made of a steel plate attached with a stud also serving as a formwork paired with the lower end restraint steel plate is positioned so that the stud faces inward, A pier reinforcement method characterized by placing concrete between the steel plates restrained at both ends.
  2. 【請求項2】 補強鋼板を橋脚躯体の外面に取り付ける
    橋脚補強工法において、橋脚躯体の外面に取り付ける補
    強鋼板下端方にスタッドを取り付けた下端拘束鋼板をス
    タッドが外側に向くようにして一体化し、フーチングに
    アンカー筋をアンカー筋の上端が下端拘束鋼板の上端よ
    りも上方に突出した状態で定着するとともにその外側に
    上記下端拘束鋼板と間隔を設けて、この下端拘束鋼板と
    対となる型枠を兼ねたスタッドを取り付けた鋼板からな
    る下端拘束鋼板をスタッドが内側に向くように位置さ
    せ、両下端拘束鋼板間にコンクリートを打設するととも
    にその上方に突出したアンカー筋部にもコンクリートを
    打設してアンカー筋をコンクリート中に埋設して定着す
    るようにしたことを特徴とする橋脚補強工法。
    2. A pier reinforcing method for attaching a reinforcing steel plate to an outer surface of a pier skeleton, wherein a lower end restraining steel plate having a stud attached to a lower end of the reinforcing steel plate attached to the outer surface of the pier skeleton is integrated so that the stud faces outward, and footing is performed. The anchor bar is fixed in a state where the upper end of the anchor bar protrudes above the upper end of the lower constrained steel plate, and at the outside thereof, a space is provided with the lower constrained steel plate to serve as a formwork paired with the lower constrained steel plate. The lower end constrained steel plate consisting of the steel plate with the studs attached is positioned so that the stud faces inward, concrete is poured between both lower end constrained steel plates, and concrete is also cast on the anchor bars projecting upward. A pier reinforcement method characterized in that anchor bars are buried in concrete and settled.
JP5545296A 1996-02-19 1996-02-19 Bridge pier reinforcement method Expired - Lifetime JP2742994B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5545296A JP2742994B2 (en) 1996-02-19 1996-02-19 Bridge pier reinforcement method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5545296A JP2742994B2 (en) 1996-02-19 1996-02-19 Bridge pier reinforcement method

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Publication Number Publication Date
JPH09221719A true JPH09221719A (en) 1997-08-26
JP2742994B2 JP2742994B2 (en) 1998-04-22

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

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000328585A (en) * 1999-05-20 2000-11-28 Shimizu Corp Base isolating method
JP2000336617A (en) * 1999-05-31 2000-12-05 Central Japan Railway Co Earthquake resistant reinforcing method for bridge pier
KR100440092B1 (en) * 2001-08-07 2004-07-14 선암산업개발주식회사 Pannel for Repair and Reinforcement Method of Pier and Utilize Pannel Repair and Reinforcement Method
KR100446360B1 (en) * 2001-08-07 2004-09-01 선암산업개발주식회사 Utilize Stone Repair and Reinforcement Method of Pier
KR100704874B1 (en) * 2005-12-15 2007-04-09 주식회사 포스코건설 Structures of prefabricated concrete pier strengthened in shear by steel pipe
JP2007177492A (en) * 2005-12-27 2007-07-12 East Japan Railway Co Pier reinforcing method
JP2007321354A (en) * 2006-05-30 2007-12-13 Jfe Engineering Kk Reinforcing structure for square pier stud, reinforcing structure for base of the square pier stud, and method of constructing the same
KR100830119B1 (en) * 2001-12-21 2008-05-20 재단법인 포항산업과학연구원 Joint of base concrete structure and bridge pier
JP2010070973A (en) * 2008-09-18 2010-04-02 Central Japan Railway Co Supporting structure and construction method for bridge
JP5597317B1 (en) * 2014-04-16 2014-10-01 株式会社ハナミズキ・ブリッジ・プランニング Seismic reinforcement structure for bridge piers
CN108149577A (en) * 2017-12-05 2018-06-12 上海建工七建集团有限公司 A kind of steel bracket system and its installation method

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000328585A (en) * 1999-05-20 2000-11-28 Shimizu Corp Base isolating method
JP2000336617A (en) * 1999-05-31 2000-12-05 Central Japan Railway Co Earthquake resistant reinforcing method for bridge pier
KR100440092B1 (en) * 2001-08-07 2004-07-14 선암산업개발주식회사 Pannel for Repair and Reinforcement Method of Pier and Utilize Pannel Repair and Reinforcement Method
KR100446360B1 (en) * 2001-08-07 2004-09-01 선암산업개발주식회사 Utilize Stone Repair and Reinforcement Method of Pier
KR100830119B1 (en) * 2001-12-21 2008-05-20 재단법인 포항산업과학연구원 Joint of base concrete structure and bridge pier
KR100704874B1 (en) * 2005-12-15 2007-04-09 주식회사 포스코건설 Structures of prefabricated concrete pier strengthened in shear by steel pipe
JP2007177492A (en) * 2005-12-27 2007-07-12 East Japan Railway Co Pier reinforcing method
JP2007321354A (en) * 2006-05-30 2007-12-13 Jfe Engineering Kk Reinforcing structure for square pier stud, reinforcing structure for base of the square pier stud, and method of constructing the same
JP4544202B2 (en) * 2006-05-30 2010-09-15 Jfeエンジニアリング株式会社 Reinforcing structure of rectangular pedestal, reinforcing structure of base of rectangular pedestal, and construction method thereof
JP2010070973A (en) * 2008-09-18 2010-04-02 Central Japan Railway Co Supporting structure and construction method for bridge
JP5597317B1 (en) * 2014-04-16 2014-10-01 株式会社ハナミズキ・ブリッジ・プランニング Seismic reinforcement structure for bridge piers
CN108149577A (en) * 2017-12-05 2018-06-12 上海建工七建集团有限公司 A kind of steel bracket system and its installation method

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