JP5361100B1

JP5361100B1 - Reinforced structure of concrete columns with walls

Info

Publication number: JP5361100B1
Application number: JP2013006486A
Authority: JP
Inventors: 山川　　洋
Original assignee: 株式会社サンヨーホーム
Priority date: 2013-01-17
Filing date: 2013-01-17
Publication date: 2013-12-04
Anticipated expiration: 2033-01-17
Also published as: JP2014136924A

Abstract

【課題】コンクリート柱を大きく破壊することなく店舗の屋外側から施工できる壁付きコンクリート柱の補強構造を提供する。
【解決手段】コンクリート柱１の側面に壁３が設けられた壁付きコンクリート柱の補強構造である。コンクリート柱１の屋外側の面に固定された補強鋼板１０と、補強鋼板１０の外側に配設された囲い鋼板２１，２２と、囲い鋼板２１，２２の外側に接着剤により張り付けられた補強シート１８と、補強鋼板１０と囲い鋼板２１，２２との間に形成される空間部２６内に充填されたグラウト材７とを備える。第１の囲い鋼板２１の第２の連結片２５が補強鋼板１０の一方の第１の連結片１２に連結され、第２の囲い鋼板２２の第２の連結片２５が補強鋼板１０の他方の第１の連結片１２に連結され、第１および第２の囲い鋼板２１，２２の外板２４の先端部がスライド可能に重なる。
【選択図】図１The present invention provides a reinforcing structure for a concrete column with a wall that can be constructed from the outside of a store without greatly destroying the concrete column.
A wall-mounted concrete column reinforcing structure in which a wall 3 is provided on a side surface of a concrete column 1 is provided. Reinforced steel plate 10 fixed to the surface of the concrete pillar 1 on the outdoor side, enclosure steel plates 21 and 22 disposed outside the reinforcement steel plate 10, and reinforcement sheet attached to the outside of the enclosure steel plates 21 and 22 with an adhesive 18 and a grout material 7 filled in a space 26 formed between the reinforcing steel plate 10 and the surrounding steel plates 21 and 22. The second connecting piece 25 of the first surrounding steel plate 21 is connected to one first connecting piece 12 of the reinforcing steel plate 10, and the second connecting piece 25 of the second surrounding steel plate 22 is connected to the other of the reinforcing steel plate 10. It connects with the 1st connection piece 12, and the front-end | tip part of the outer plate 24 of the 1st and 2nd enclosure steel plates 21 and 22 overlaps so that a slide is possible.
[Selection] Figure 1

Description

本発明は、建造物のコンクリート柱の側面に壁が設けられた壁付きコンクリート柱を補強する補強構造に関する。 The present invention relates to a reinforcing structure that reinforces a walled concrete column in which a wall is provided on a side surface of a concrete column of a building.

近年あちこちで起きた大地震により鉄筋コンクリート構造物が大きな被害を受けた。その被害の原因は、コンクリート構造物のせん断破壊であると指摘されている。強震時の多数回交番繰り返し変形により、せん断破壊が増長されてしまうためであると究明されている。このような繰り返し力に対して、鉄筋コンクリートの柱や梁等のコンクリート構造物のせん断破壊を防止し、復元力特性の安定と粘りを確保するには、コンクリート構造物を有効に拘束することが重要であることが知られている。 In recent years, reinforced concrete structures have been greatly damaged by large earthquakes. It is pointed out that the cause of the damage is shear failure of the concrete structure. It has been investigated that this is because shear deformation is increased by repeated alternating deformation many times during strong earthquakes. In order to prevent shear failure of concrete structures such as reinforced concrete columns and beams, and to ensure stability and stickiness of the restoring force characteristics against such repeated forces, it is important to constrain the concrete structure effectively. It is known that

従来から、鉄筋コンクリート柱の耐震性を高めるために、既設の鉄筋コンクリート柱に種々の補強を施すことが行なわれている。 Conventionally, in order to increase the earthquake resistance of reinforced concrete columns, various reinforcements have been applied to existing reinforced concrete columns.

そのような鉄筋コンクリート柱の補強方法として、鉄筋コンクリート柱の周囲を鋼板で巻き付け鉄筋コンクリートで覆う方法、あるいは鉄筋コンクリート柱の周囲を炭素繊維シート、アラミド繊維シートなどの補強シートで巻き付け固着する方法が採用されている。 As a method for reinforcing such a reinforced concrete column, a method in which the periphery of the reinforced concrete column is wrapped with a steel plate and covered with reinforced concrete, or a method in which the periphery of the reinforced concrete column is wound and fixed with a reinforcing sheet such as a carbon fiber sheet or an aramid fiber sheet is adopted. .

しかし、これらの補強方法は、いずれも鉄筋コンクリート柱の全周面を利用して行われる。そのため、鉄筋コンクリート柱に壁が連続し、該コンクリート柱の側面が店舗の内壁面の一部となっている場合は、営業中の店舗の鉄筋コンクリート柱に連続する壁を取り壊し店舗の室内側からも施工しなければならず、営業中に施工することは望ましくない。 However, all of these reinforcing methods are performed using the entire circumferential surface of the reinforced concrete column. Therefore, if the wall is continuous with the reinforced concrete pillar and the side of the concrete pillar is a part of the inner wall of the store, the wall that continues to the reinforced concrete pillar of the store in operation is demolished and installed from the indoor side of the store. It is not desirable to install it during business.

そこで、店舗の中に入ることなく店舗の外側から鉄筋コンクリート柱の外壁面を補強する方法が、特開２０００−１１０３６５号公報（特許文献１）および特開２００３−１１３６７４号公報（特許文献２）に提案されている。 Therefore, methods for reinforcing the outer wall surface of a reinforced concrete column from the outside of the store without entering the store are disclosed in Japanese Patent Application Laid-Open No. 2000-110365 (Patent Document 1) and Japanese Patent Application Laid-Open No. 2003-113673 (Patent Document 2). Proposed.

しかし、これらの文献に記載の補強方法では、図１２に示すように、コンクリート柱１に長孔５０をあけ、この長孔５０に長いボルト５１を挿入しているので、鉄筋コンクリート柱１の一部が破壊され、その強度が大きく低下する。 However, in the reinforcing methods described in these documents, as shown in FIG. 12, a long hole 50 is made in the concrete column 1 and a long bolt 51 is inserted into the long hole 50. Therefore, a part of the reinforced concrete column 1 is used. Is destroyed and its strength is greatly reduced.

特開２０１２−７４１８号公報（特許文献３）には、図１３に示すように、鉄筋コンクリート柱１の外壁面に、一対の囲い鋼板５２をスライド可能に配設し、この一対の囲い鋼板５２を補強シート５３で結束し、一対の囲い鋼板５２と柱の外壁面との間に形成された空間部内にグラウト材５４を充填した建造物の補強構造が提案されている。なお、図中の番号３は壁を示す。 In JP 2012-7418 A (Patent Document 3), as shown in FIG. 13, a pair of surrounding steel plates 52 are slidably disposed on the outer wall surface of the reinforced concrete column 1, and the pair of surrounding steel plates 52 are arranged. There has been proposed a reinforcing structure for a building which is bound by a reinforcing sheet 53 and is filled with a grout material 54 in a space formed between a pair of surrounding steel plates 52 and an outer wall surface of a column. In addition, the number 3 in a figure shows a wall.

しかし、この補強構造では、鉄筋コンクリート柱１の靭性を上げることにはならず、耐震性が向上しない。つまり、この補強構造は、むしろ鉄筋コンクリート柱１の強度および曲げ強度を上げる構造であるため、建造物全体と柱との強度バランスが崩れるという大きな欠点がある。 However, this reinforcement structure does not increase the toughness of the reinforced concrete column 1 and does not improve the earthquake resistance. In other words, this reinforcing structure is rather a structure that increases the strength and bending strength of the reinforced concrete column 1, so that there is a major drawback that the strength balance between the entire building and the column is lost.

特開２０００−１１０３６５号公報JP 2000-110365 A 特開２００３−１１３６７４号公報JP 2003-113694 A 特開２０１２−７４１８号公報JP2012-7418A

本発明は上記課題を解決するためになされたもので、コンクリート柱を大きく破壊することなく店舗の屋外側から施工できる壁付きコンクリート柱の補強構造を提供することを目的とする。 The present invention has been made to solve the above problems, and an object of the present invention is to provide a wall-reinforced concrete column reinforcement structure that can be constructed from the outdoor side of a store without greatly destroying the concrete column.

本発明の他の目的は、コンクリート柱の強度・曲げ強度を上げることなく靭性を上げることができる壁付きコンクリート柱の補強構造を提供することにある。 It is another object of the present invention to provide a wall-reinforced concrete column reinforcing structure that can increase toughness without increasing the strength and bending strength of the concrete column.

上記課題を解決するため、本発明は以下を特徴とする。 In order to solve the above problems, the present invention is characterized by the following.

本発明でいうコンクリート柱は、鉄筋コンクリート柱、鉄骨鉄筋コンクリート柱、鋼管コンクリート柱および鉄骨柱を含む。鉄骨柱はコンクリートを含まないが、本発明では鉄骨柱もコンクリート柱に含めるものとする。
（項目１）
コンクリート柱の側面に壁が設けられた壁付きコンクリート柱の補強構造であって、
該コンクリート柱の屋外側の面に固定された補強鋼板と、該補強鋼板の外側に配設された囲い鋼板と、該囲い鋼板の外側に接着剤により張り付けられた補強シートと、該補強鋼板と該囲い鋼板との間に形成される空間部内に充填されたグラウト材とを備え、
該補強鋼板が、該コンクリート柱の屋外側の面に固定される固定板と、該固定板の両端部からそれぞれ屋外側へ折り曲げられた第１の連結片とを有し、
該囲い鋼板が、該補強鋼板の一方側端部に配設される第１の囲い鋼板と、該補強鋼板の他方側端部に配設される第２の囲い鋼板とを有し、
該第１および第２の囲い鋼板は、外板と該外板の端部から折り曲げられた第２の連結片とを有し、
第１の囲い鋼板の第２の連結片が該補強鋼板の一方の第１の連結片に連結され、
第２の囲い鋼板の第２の連結片が該補強鋼板の他方の第１の連結片に連結され、
該第１および第２の囲い鋼板の外板の端部がスライド可能に重なった壁付きコンクリート柱の補強構造。
（項目２）
前記補強鋼板が、横断面コ字形に形成された項目１に記載の壁付きコンクリート柱の補強構造。
（項目３）
前記第１および第２の囲い鋼板が、横断面Ｌ字形に形成された項目１または２に記載の壁付きコンクリート柱の補強構造。
（項目４）
前記補強鋼板の第１の連結片と前記第１および第２の囲い鋼板の第２の連結片が、タイバーおよびナットによって連結された項目１〜３のいずれかに記載の壁付きコンクリート柱の補強構造。
（項目５）
前記第１および第２の囲い鋼板のそれぞれの第２の連結片が、前記補強鋼板の一対の第１の連結片の外側に配設され、
該それぞれの第２の連結片の外側に座金プレートが配設され、該第２の連結片と該座金プレートとの間に前記補強シートが介在され、一対の座金プレート間にタイバーが通され、該タイバーの先端部に形成したネジ部にナットを螺合することにより、該補強鋼板の第１の連結片と該囲い鋼板の第２の連結片が連結され、該補強シートが該囲い鋼板の第２の連結片と該座金プレートとの間で挟持されている項目１〜４のいずれかに記載の壁付きコンクリート柱の補強構造。
（項目６）
前記囲い鋼板の端部のスライド部分のスライドを制限する制限部を設けた項目１〜５のいずれかに記載の壁付きコンクリート柱の補強構造。
（項目７）
前記制限部が、前記囲い鋼板端部にスライド抵抗を与えるための摩擦部である項目６に記載の壁付きコンクリート柱の補強構造。
（項目８）
前記摩擦部が、前記スライド可能端部の対向する面に形成された凹凸である項目７に記載の壁付きコンクリート柱の補強構造。
（項目９）
前記制限部が、前記スライド端部の一方に水平方向に長く形成された長孔と、もう一方のスライド端部に固定されかつ該長孔内にスライド可能に挿通されるストッパーと、を有する項目６に記載の壁付きコンクリート柱の補強構造。
（項目１０）
前記補強鋼板がアンカーボルトによってコンクリート柱に固定された項目１〜９のいずれかに記載の壁付きコンクリート柱の補強構造。
（項目１１）
前記補強鋼板が接着剤によってコンクリート柱に固定された項目１〜９のいずれかに記載の壁付きコンクリート柱の補強構造。
（項目１２）
前記コンクリート柱の屋内側の面に補強シートが張り付けられた項目１〜１１のいずれかの項に記載の壁付きコンクリート柱の補強構造。
（項目１３）
前記コンクリート柱に隣接する壁にスリットが形成され、前記補強シートが該スリットを通して該コンクリート柱の周りに張り付けられた項目１〜１２のいずれかの項に記載の壁付きコンクリート柱の補強構造。
（項目１４）
前記コンクリート柱の屋内側の面に囲い鋼板が配設され、該コンクリート柱に隣接する壁にスリットが形成され、前記補強シートが該スリットを通して該コンクリート柱の周りに張り付けられ、該補強シートが該囲い鋼板をコンクリート柱側へ締め付けた項目１〜１２のいずれかの項に記載の壁付きコンクリート柱の補強構造。
（項目１５）
コンクリート柱の屋外側の面に補強鋼板を固定する工程、
該補強鋼板の外側に囲い鋼板を配設する工程、
該囲い鋼板の外側に補強シートを接着剤により張り付ける工程、
該補強鋼板と該囲い鋼板との間に形成される空間部内にグラウト材を充填する工程、
を包含する、コンクリート柱の側面に壁が設けられた壁付きコンクリート柱の補強方法であって、
該補強鋼板が、該コンクリート柱の屋外側の面に固定される固定板と、該固定板の両端部からそれぞれ屋外側へ折り曲げられた第１の連結片とを有し、
該囲い鋼板が、該補強鋼板の一方側端部に配設される第１の囲い鋼板と、該補強鋼板の他方側端部に配設される第２の囲い鋼板とを有し、
該第１および第２の囲い鋼板は、外板と該外板の端部から折り曲げられた第２の連結片とを有し、
第１の囲い鋼板の第２の連結片が該補強鋼板の一方の第１の連結片に連結され、
第２の囲い鋼板の第２の連結片が該補強鋼板の他方の第１の連結片に連結され、
該第１および第２の囲い鋼板の外板の端部がスライド可能に重なった壁付きコンクリート柱の補強方法。 The concrete column referred to in the present invention includes a reinforced concrete column, a steel reinforced concrete column, a steel pipe concrete column, and a steel column. The steel column does not include concrete, but in the present invention, the steel column is also included in the concrete column.
(Item 1)
It is a reinforcing structure of a concrete column with a wall provided with a wall on the side of the concrete column,
A reinforcing steel plate fixed to the surface of the concrete column on the outdoor side, a surrounding steel plate disposed outside the reinforcing steel plate, a reinforcing sheet attached to the outside of the surrounding steel plate with an adhesive, and the reinforcing steel plate; A grout material filled in a space formed between the surrounding steel plates,
The reinforcing steel plate has a fixing plate fixed to the outdoor side surface of the concrete column, and first connecting pieces bent from the both ends of the fixing plate to the outdoor side, respectively.
The enclosure steel plate has a first enclosure steel plate disposed at one end portion of the reinforcing steel plate, and a second enclosure steel plate disposed at the other end portion of the reinforcement steel plate,
The first and second surrounding steel plates each have an outer plate and a second connecting piece bent from an end portion of the outer plate,
A second connecting piece of the first enclosure steel plate is connected to one first connecting piece of the reinforcing steel plate;
A second connecting piece of the second enclosure steel plate is connected to the other first connecting piece of the reinforcing steel plate;
A reinforcing structure of a concrete column with a wall in which ends of outer plates of the first and second enclosure steel plates are slidably overlapped.
(Item 2)
The reinforcing structure of a concrete column with a wall according to item 1, wherein the reinforcing steel plate is formed in a U-shaped cross section.
(Item 3)
The reinforcing structure of a concrete column with a wall according to item 1 or 2, wherein the first and second surrounding steel plates are formed in an L-shaped cross section.
(Item 4)
The reinforcement of the concrete pillar with a wall in any one of the items 1-3 with which the 1st connection piece of the said reinforcement steel plate and the 2nd connection piece of the said 1st and 2nd enclosure steel plate were connected by the tie bar and the nut. Construction.
(Item 5)
A second connecting piece of each of the first and second surrounding steel plates is disposed outside the pair of first connecting pieces of the reinforcing steel plate;
A washer plate is disposed outside each of the second connecting pieces, the reinforcing sheet is interposed between the second connecting piece and the washer plate, and a tie bar is passed between the pair of washer plates. By screwing a nut into a screw portion formed at the tip of the tie bar, the first connecting piece of the reinforcing steel plate and the second connecting piece of the surrounding steel plate are connected, and the reinforcing sheet is connected to the surrounding steel plate . The reinforcing structure of a concrete pillar with a wall according to any one of items 1 to 4, which is sandwiched between a second connecting piece and the washer plate .
(Item 6)
The reinforcement structure of the concrete pillar with a wall in any one of the items 1-5 which provided the restriction | limiting part which restrict | limits the slide of the slide part of the edge part of the said enclosure steel plate.
(Item 7)
Item 7. The reinforcing structure for a concrete column with a wall according to item 6, wherein the limiting portion is a friction portion for applying a sliding resistance to the end portion of the surrounding steel plate.
(Item 8)
Item 8. The reinforcing structure for a concrete column with a wall according to Item 7, wherein the friction portion is an unevenness formed on the opposing surface of the slidable end portion.
(Item 9)
The restriction part has an elongated hole formed in one of the slide end parts in the horizontal direction, and a stopper fixed to the other slide end part and slidably inserted into the elongated hole. 6. The reinforcing structure of a concrete pillar with a wall according to 6.
(Item 10)
The reinforcement structure of a concrete pillar with a wall according to any one of items 1 to 9, wherein the reinforcing steel plate is fixed to the concrete pillar with an anchor bolt.
(Item 11)
The reinforcement structure of the concrete pillar with a wall in any one of the items 1-9 with which the said reinforcement steel plate was fixed to the concrete pillar with the adhesive agent.
(Item 12)
The reinforcing structure of a concrete pillar with a wall according to any one of items 1 to 11, wherein a reinforcing sheet is attached to a surface on the indoor side of the concrete pillar.
(Item 13)
The reinforcing structure for a concrete column with a wall according to any one of items 1 to 12, wherein a slit is formed in a wall adjacent to the concrete column, and the reinforcing sheet is attached around the concrete column through the slit.
(Item 14)
An encircling steel plate is disposed on the indoor side surface of the concrete pillar, a slit is formed in a wall adjacent to the concrete pillar, the reinforcing sheet is pasted around the concrete pillar through the slit, and the reinforcing sheet is The reinforcement structure of a concrete pillar with a wall according to any one of items 1 to 12, wherein the enclosure steel plate is tightened to the concrete pillar side.
(Item 15)
Fixing the reinforcing steel plate to the outdoor side surface of the concrete pillar,
Arranging a surrounding steel plate outside the reinforcing steel plate;
A step of attaching a reinforcing sheet to the outside of the enclosure steel plate with an adhesive;
A step of filling a grout material in a space formed between the reinforcing steel plate and the surrounding steel plate,
A method of reinforcing a concrete column with a wall, in which a wall is provided on a side surface of the concrete column,
The reinforcing steel plate has a fixing plate fixed to the outdoor side surface of the concrete column, and first connecting pieces bent from the both ends of the fixing plate to the outdoor side, respectively.
The enclosure steel plate has a first enclosure steel plate disposed at one end portion of the reinforcing steel plate, and a second enclosure steel plate disposed at the other end portion of the reinforcement steel plate,
The first and second surrounding steel plates each have an outer plate and a second connecting piece bent from an end portion of the outer plate,
A second connecting piece of the first enclosure steel plate is connected to one first connecting piece of the reinforcing steel plate;
A second connecting piece of the second enclosure steel plate is connected to the other first connecting piece of the reinforcing steel plate;
A method for reinforcing a walled concrete column in which ends of outer plates of the first and second enclosure steel plates are slidably overlapped.

本発明の補強構造によれば、コンクリート柱の屋外側の面に固定された補強鋼板と、該補強鋼板の外側に配設された囲い鋼板と、該囲い鋼板の外側に接着剤により張り付けられた補強シートと、該補強鋼板と該囲い鋼板との間に形成される空間部内に充填されたグラウト材とを備えるので、コンクリート柱に長孔をあけて柱の一部を破壊してしまうというようなことなく、コンクリート柱の屋外側の面を補強鋼板、グラウト材、囲い鋼板および補強シートによって補強することができる。この補強構造は、コンクリート柱の屋外側から施工できるので、壁の内側にある店舗等に工事の影響を与えることがない。 According to the reinforcing structure of the present invention, the reinforcing steel plate fixed to the outdoor side surface of the concrete pillar, the surrounding steel plate disposed outside the reinforcing steel plate, and attached to the outside of the surrounding steel plate with an adhesive Since it is provided with a reinforcing sheet and a grout material filled in a space formed between the reinforcing steel plate and the surrounding steel plate, a long hole is made in a concrete column and a part of the column is destroyed. The surface of the concrete column on the outdoor side can be reinforced with the reinforcing steel plate, the grout material, the surrounding steel plate and the reinforcing sheet. Since this reinforcing structure can be constructed from the outdoor side of the concrete pillar, it does not affect the construction on the store inside the wall.

しかも、第１および第２の囲い鋼板の端部が重なっており、それらの囲い鋼板の外側を接着剤を用いた補強シートによって締め付けているので、コンクリート柱にせん断力が作用したときには、囲い鋼板の外板が相互にスライドすると共に補強シートに力を伝達するため、補強されたコンクリート柱の靭性が大きくなる。それゆえ、補強されたコンクリート柱の耐震性が向上する。 And since the edge part of the 1st and 2nd enclosure steel plates has overlapped and the outer side of those enclosure steel plates is clamp | tightened by the reinforcement sheet | seat using an adhesive agent, when a shear force acts on a concrete pillar, enclosure steel plates Since the outer plates of each other slide with each other and transmit the force to the reinforcing sheet, the toughness of the reinforced concrete column is increased. Therefore, the earthquake resistance of the reinforced concrete column is improved.

特に、この囲い鋼板の外板の端部には、該端部のスライドを許容するが、このスライドを制限する制限部が設けられていると、コンクリート柱に大きくかつ急激にせん断力が作用した場合でも、囲い鋼板の制限部によってその力の一部を制限でき、そのせん断力の全てが補強シートに作用することがない。 In particular, the end portion of the outer plate of the enclosure steel plate allows sliding of the end portion, but if a limiting portion for limiting the sliding is provided, a large and sudden shear force acts on the concrete column. Even in this case, a part of the force can be limited by the limiting portion of the surrounding steel plate, and all of the shearing force does not act on the reinforcing sheet.

制限部として、囲い鋼板の外板のスライドに抵抗を与える摩擦部を形成する。この摩擦部は、コンクリート柱にせん断力が作用したときにも、一対の鋼板の外板は締結を維持するが、さらにせん断力が加わるとスライドを許容する。そして、そのスライド移動には摩擦抵抗が生じて補強シートに作用する力が抑制される。このような一連の力の移動を通じてコンクリート柱の耐震性が向上する。 As the limiting portion, a friction portion that provides resistance to the sliding of the outer plate of the enclosure steel plate is formed. Even when a shearing force is applied to the concrete column, this friction portion maintains the fastening of the outer plates of the pair of steel plates, but allows sliding when further shearing force is applied. Then, frictional resistance is generated in the sliding movement, and the force acting on the reinforcing sheet is suppressed. The seismic resistance of the concrete column is improved through such a series of movement of forces.

制限部が、囲い鋼板の外板に水平方向に長く形成された長孔と、隣接する囲い鋼板の外板に固定されかつこの長孔内にスライド可能に挿通されるストッパーとを有すると、ストッパーの移動が長孔内で規制されるため、囲い鋼板の外板を無制限に相互にスライドさせることがなく、その結果補強シートの切断を防止でき、大地震によって建物が崩壊することを防止することができる。 When the limiting portion has a long hole formed in the outer plate of the surrounding steel plate in the horizontal direction and a stopper fixed to the outer plate of the adjacent surrounding steel plate and slidably inserted into the long hole, the stopper Since the movement of the steel plate is restricted within the long hole, the outer plates of the surrounding steel plates do not slide with each other indefinitely. As a result, the reinforcing sheets can be prevented from being cut and the building can be prevented from collapsing due to a large earthquake. Can do.

本発明の一実施例の壁付き鉄筋コンクリート柱の補強構造の斜視図である。It is a perspective view of the reinforcement structure of the reinforced concrete pillar with a wall of one Example of this invention. 図１に示す壁付き鉄筋コンクリート柱の補強構造の水平断面図である。It is a horizontal sectional view of the reinforcement structure of the reinforced concrete pillar with a wall shown in FIG. 囲い鋼板に形成した摩擦部の拡大断面図である。It is an expanded sectional view of the friction part formed in the enclosure steel plate. 図３に示す摩擦部の説明図である。It is explanatory drawing of the friction part shown in FIG. 本発明の他の実施例の壁付き鉄筋コンクリート柱の補強構造の正面図である。It is a front view of the reinforcement structure of the reinforced concrete pillar with a wall of the other Example of this invention. 図５に示す実施例の壁付き鉄筋コンクリート柱の補強構造の要部拡大断面図である。It is a principal part expanded sectional view of the reinforcement structure of the reinforced concrete pillar with a wall of the Example shown in FIG. 本発明のさらに他の実施例の壁付き鉄筋コンクリート柱の補強構造の正面図である。It is a front view of the reinforcement structure of the reinforced concrete pillar with a wall of the further another Example of this invention. 本発明のさらに他の実施例の壁付き鉄筋コンクリート柱の補強構造の縦断面図である。It is a longitudinal cross-sectional view of the reinforcement structure of the reinforced concrete pillar with a wall of the further another Example of this invention. 本発明のさらに他の実施例の壁付き鉄筋コンクリート柱の補強構造の断面図である。It is sectional drawing of the reinforcement structure of the reinforced concrete pillar with a wall of the further another Example of this invention. 本発明のさらに他の実施例の壁付き鉄筋コンクリート柱の補強構造の断面図である。It is sectional drawing of the reinforcement structure of the reinforced concrete pillar with a wall of the further another Example of this invention. 本発明のさらに他の実施例の壁付き鉄筋コンクリート柱の補強構造の断面図である。It is sectional drawing of the reinforcement structure of the reinforced concrete pillar with a wall of the further another Example of this invention. 従来の壁付き鉄筋コンクリート柱の補強構造の断面図である。It is sectional drawing of the reinforcement structure of the conventional reinforced concrete pillar with a wall. 他の従来の壁付き鉄筋コンクリート柱の補強構造の断面図である。It is sectional drawing of the reinforcement structure of the other conventional reinforced concrete pillar with a wall.

以下、本発明の実施の形態について図面を参照しながら詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

以下の実施例では鉄筋コンクリート柱について説明するが、コンクリート柱の中が鉄筋であれ鉄骨であれそしてその組み合わせであれ、本発明の補強構造の施工上差異はないので、本発明は鉄筋コンクリート柱に限らず、鉄骨鉄筋コンクリート柱、鋼管コンクリート柱および鉄骨柱にも同様に適用することができる。
（第１実施例）
図１および図２に示すように、横断面が四角形状に形成された鉄筋コンクリート柱１の対向する側面から壁３がそれぞれ設けられている。店舗等はこの壁３の柱１側に設けられる。鉄筋コンクリート柱１の一般的なサイズは600×600ｍｍまたは800×800ｍｍである。 In the following examples, reinforced concrete columns will be described, but there is no difference in the construction of the reinforcing structure of the present invention regardless of whether the concrete columns are reinforced steel, steel frames, or combinations thereof, the present invention is not limited to reinforced concrete columns. It can be similarly applied to steel-framed reinforced concrete columns, steel pipe concrete columns and steel columns.
(First embodiment)
As shown in FIG. 1 and FIG. 2, walls 3 are respectively provided from the opposing side surfaces of the reinforced concrete pillar 1 having a rectangular cross section. A store or the like is provided on the pillar 1 side of the wall 3. A typical size of the reinforced concrete column 1 is 600 × 600 mm or 800 × 800 mm.

この鉄筋コンクリート柱１の屋外側の面に補強鋼板１０が固定され、さらに補強鋼板１０の外側に第１および第２の囲い鋼板２１、２２が連結されて、該補強鋼板１０と該第１および第２の囲い鋼板２１、２２との間に横断面が四角形状の空間部２６が形成されている。該第１および第２の囲い鋼板２１、２２の外側に補強シート１８が接着剤により貼り付けられている。空間部２６内にはグラウト材７が充填され、このようにして、鉄筋コンクリート柱１が補強される。 The reinforcing steel plate 10 is fixed to the surface of the reinforced concrete column 1 on the outdoor side, and the first and second surrounding steel plates 21 and 22 are connected to the outside of the reinforcing steel plate 10. A space 26 having a square cross section is formed between the two surrounding steel plates 21 and 22. A reinforcing sheet 18 is attached to the outside of the first and second enclosure steel plates 21 and 22 with an adhesive. The space part 26 is filled with the grout material 7, and the reinforced concrete pillar 1 is reinforced in this way.

補強鋼板１０は鋼板を折り曲げて形成されている。補強鋼板１０の厚みの一例は、1.6〜3.2ｍｍ程度である。補強鋼板１０は、柱１の壁面に固定される固定板１１と、該固定板１１の両端部からそれぞれ屋外側へ折り曲げられた第１の連結片１２、１２とを有する。補強鋼板１０は好ましくは鋼板を折り曲げて横断面コ字形に形成されている。 The reinforcing steel plate 10 is formed by bending a steel plate. An example of the thickness of the reinforced steel sheet 10 is about 1.6 to 3.2 mm. The reinforcing steel plate 10 includes a fixed plate 11 fixed to the wall surface of the pillar 1 and first connecting pieces 12 and 12 bent from the both ends of the fixed plate 11 to the outdoor side. The reinforcing steel plate 10 is preferably formed into a U-shaped cross section by bending a steel plate.

固定板１１の巾寸法は、鉄筋コンクリート柱１の巾寸法Ｌとほぼ等しいか、または鉄筋コンクリート柱１の巾寸法Ｌよりやや大きく設定されている。第１の連結片１２の長さは、第１および第２の囲い鋼板２１、２２を補強鋼板１０に連結できる長さであればよく任意に設定される。 The width dimension of the fixed plate 11 is set to be approximately equal to the width dimension L of the reinforced concrete column 1 or slightly larger than the width dimension L of the reinforced concrete column 1. The length of the 1st connection piece 12 should just be the length which can connect the 1st and 2nd enclosure steel plates 21 and 22 to the reinforcement steel plate 10, and is set arbitrarily.

該第１の囲い鋼板２１は該補強鋼板１０の一方側端部に配設され、第２の囲い鋼板２２は該補強鋼板１０の他方側端部に配設される。 The first enclosure steel plate 21 is disposed at one end of the reinforcing steel plate 10, and the second enclosure steel plate 22 is disposed at the other end of the reinforcement steel plate 10.

該第１および第２の囲い鋼板２１、２２は、鋼板を折り曲げて形成されている。第１および第２の囲い鋼板２１、２２の厚みの一例は、1.6〜3.2ｍｍ程度である。それぞれの囲い鋼板２１、２２は、外板２４と該外板２４の端部から壁側へ折り曲げられた第２の連結片２５とを有する。第１および第２の囲い鋼板２１、２２は好ましくは鋼板を折曲して横断面Ｌ字形に形成されている。 The first and second surrounding steel plates 21 and 22 are formed by bending a steel plate. An example of the thickness of the 1st and 2nd enclosure steel plates 21 and 22 is about 1.6-3.2 mm. Each of the surrounding steel plates 21 and 22 includes an outer plate 24 and a second connecting piece 25 bent from the end portion of the outer plate 24 to the wall side. The first and second surrounding steel plates 21 and 22 are preferably formed into a L-shaped cross section by bending the steel plates.

図２に示すように、補強鋼板１０の固定板１１は、鉄筋コンクリート柱１の屋外側の面にアンカーボルト５などによって固定される。アンカーボルト５は複数本を用いることができる。アンカーボルト５の長さは壁３の厚さ程度とするのがよい。 As shown in FIG. 2, the fixing plate 11 of the reinforcing steel plate 10 is fixed to the outdoor side surface of the reinforced concrete column 1 by anchor bolts 5 or the like. A plurality of anchor bolts 5 can be used. The length of the anchor bolt 5 is preferably about the thickness of the wall 3.

そのアンカーボルト５の孔に、流動性の硬化性樹脂若しくはセメントモルタルなどを充填固化させて、アンカーボルト５を壁面に埋設一体化させてもよい。 The anchor bolt 5 may be filled and solidified with a fluid curable resin or cement mortar in the hole of the anchor bolt 5, and the anchor bolt 5 may be embedded and integrated in the wall surface.

第１の囲い鋼板２１の第２の連結片２５が補強鋼板１０の一方側の第１の連結片１２の外側に配設され、第２の囲い鋼板２２の第２の連結片２５が該補強鋼板１０の他方側の第１の連結片１２の外側に配設されている。その際、該第１および第２の囲い鋼板２２の外板２４の端部がスライド可能に重なっている。 The second connecting piece 25 of the first surrounding steel plate 21 is disposed outside the first connecting piece 12 on one side of the reinforcing steel plate 10, and the second connecting piece 25 of the second surrounding steel plate 22 is provided with the reinforcement. It is disposed outside the first connecting piece 12 on the other side of the steel plate 10. In that case, the edge part of the outer plate | board 24 of this 1st and 2nd enclosure steel plate 22 has overlapped so that a slide is possible.

そして、第１および第２の囲い鋼板２１、２２の外面を覆うように補強シート１８が接着剤により張り付けられている。 And the reinforcement sheet 18 is stuck with the adhesive so that the outer surface of the 1st and 2nd enclosure steel plates 21 and 22 may be covered.

補強シート１８を第１および第２の囲い鋼板２１、２２の外面に接着剤により張り付けるには、次のように行うことができる。 The reinforcing sheet 18 can be adhered to the outer surfaces of the first and second surrounding steel plates 21 and 22 with an adhesive as follows.

第１および第２の囲い鋼板２１、２２の外面に接着剤を塗布し、補強シート１８をそれらの囲い鋼板２１、２２の外側に張り付ける。補強シート１８は壁面にまで延出して張り付けるのが良い。 Adhesive is applied to the outer surfaces of the first and second enclosure steel plates 21, 22, and the reinforcing sheet 18 is attached to the outside of the enclosure steel plates 21, 22. The reinforcing sheet 18 is preferably extended to the wall surface and pasted.

補強シート１８は所定幅を有し、かつ水平方向に長い所定長さのシートを使用することができる。その場合は、図１に示すように水平方向に長い補強シート１８を第１および第２の囲い鋼板２１、２２の外面に上下に複数配設して張り付けることができる。このようにして、典型的には、補強シート１８によって囲い鋼板の全面を覆う面状のシートが形成される。補強シート１８の全面を囲い鋼板に張り付けることなく、補強シート１８を囲い鋼板の周囲の一部に張り付けてもよい。 The reinforcing sheet 18 can be a sheet having a predetermined width and a predetermined length that is long in the horizontal direction. In that case, as shown in FIG. 1, a plurality of reinforcing sheets 18 that are long in the horizontal direction can be disposed on and attached to the outer surfaces of the first and second surrounding steel plates 21 and 22. In this way, typically, a sheet-like sheet that covers the entire surface of the steel plate surrounded by the reinforcing sheet 18 is formed. The reinforcing sheet 18 may be attached to a part of the periphery of the surrounding steel plate without attaching the entire surface of the reinforcing sheet 18 to the surrounding steel plate.

補強シート１８としては、従来より公知の帯状繊維シートを用いることができる。繊維は、炭素繊維、ガラス繊維、アラミド繊維、ポリエチレン繊維などを使用することができる。補強シート１８は、帯状繊維シートに弾性および強度に優れた合成樹脂を含浸させたもので構成してもよい。そのような合成樹脂としては、ポリウレア、エポキシ樹脂、ポリウレタンなどを使用することができる。靭性に優れている点でポリウレアが好ましい。廃棄可能な樹脂を使用するという点では、例えば、ポリエステルが好ましい。これらの合成樹脂を刷毛、ロール、スプレーなどによって補強シート１８および/または囲い鋼板２１，２２の外面に塗布、吹き付けしてもよい。通常は、補強シート１８の張り付け後、合成樹脂は硬化する。 As the reinforcing sheet 18, a conventionally known belt-like fiber sheet can be used. As the fiber, carbon fiber, glass fiber, aramid fiber, polyethylene fiber, or the like can be used. The reinforcing sheet 18 may be formed by impregnating a belt-shaped fiber sheet with a synthetic resin excellent in elasticity and strength. As such a synthetic resin, polyurea, epoxy resin, polyurethane and the like can be used. Polyurea is preferred because of its excellent toughness. For example, polyester is preferable in terms of using a disposable resin. You may apply | coat and spray these synthetic resins to the outer surface of the reinforcing sheet 18 and / or the surrounding steel plates 21 and 22 with a brush, a roll, a spray. Usually, after the reinforcing sheet 18 is attached, the synthetic resin is cured.

上記接着剤としては、エポキシ系接着剤、メタクリル系接着剤、アクリル系接着剤など公知の接着剤を使用することができる。 As said adhesive agent, well-known adhesive agents, such as an epoxy-type adhesive agent, a methacryl-type adhesive agent, an acrylic adhesive agent, can be used.

該第１および第２の囲い鋼板２２のそれぞれの第２の連結片２５の外側に上下方向に長い座金プレート１４が配設され、座金プレート１４、タイバー１５およびナット１６などの固定具によって、第１および第２の囲い鋼板２１、２２と補強鋼板１０が連結されている。そして、該第１および第２の囲い鋼板２１、２２の第２の連結片２５と該座金プレート１４との間に補強シート１８が通されている。 A long washer plate 14 is disposed on the outer side of the second connecting piece 25 of each of the first and second surrounding steel plates 22, and is fixed by a fixture such as the washer plate 14, the tie bar 15 and the nut 16. The 1st and 2nd enclosure steel plates 21 and 22 and the reinforcement steel plate 10 are connected. A reinforcing sheet 18 is passed between the second connecting piece 25 of the first and second surrounding steel plates 21 and 22 and the washer plate 14.

固定具は、座金プレート１４、タイバー１５、および該タイバー１５の両端部に形成されたネジ部に螺合し得るナット１６を有する。 The fixture includes a washer plate 14, a tie bar 15, and a nut 16 that can be screwed into a screw portion formed at both ends of the tie bar 15.

該座金プレート１４に形成された通孔、第１および第２の囲い鋼板２１、２２の第２の連結片２５に形成された通孔、および補強鋼板１０の第１の連結片１２に形成された通孔にタイバー１５が通され、該タイバー１５のネジ部にナット１６を螺合することにより、補強鋼板１０の第１の連結片１２と第１および第２の囲い鋼板２１、２２の第２の連結片２５が連結される。補強シート１８は該第１および第２の囲い鋼板２１、２２の第２の連結片２５と該座金プレート１４との間で挟持されている。 The through hole formed in the washer plate 14, the through hole formed in the second connecting piece 25 of the first and second surrounding steel plates 21 and 22, and the first connecting piece 12 of the reinforcing steel plate 10 are formed. The tie bar 15 is passed through the through hole, and the nut 16 is screwed into the threaded portion of the tie bar 15, whereby the first connecting piece 12 of the reinforcing steel plate 10 and the first and second surrounding steel plates 21, 22 are connected to each other. Two connecting pieces 25 are connected. The reinforcing sheet 18 is sandwiched between the second connecting piece 25 of the first and second surrounding steel plates 21 and 22 and the washer plate 14.

補強シート１８を第１および第２の囲い鋼板２１、２２の周囲に巻きつけ固定すると、補強鋼板１０の外面と一対の第１および第２の囲い鋼板２１、２２との間に空間部２６が形成される。この空間部２６内にグラウト材７が充填されている。この空間部２６に充填されたグラウト材７によって第１および第２の囲い鋼板２１、２２は補強鋼板１０を介して鉄筋コンクリート柱１と一体化することになる。 When the reinforcing sheet 18 is wound and fixed around the first and second surrounding steel plates 21 and 22, a space 26 is formed between the outer surface of the reinforcing steel plate 10 and the pair of first and second surrounding steel plates 21 and 22. It is formed. Grout material 7 is filled in the space portion 26. The first and second surrounding steel plates 21 and 22 are integrated with the reinforced concrete pillar 1 through the reinforcing steel plate 10 by the grout material 7 filled in the space portion 26.

次に、壁付き鉄筋コンクリート柱の補強方法を説明する。 Next, the reinforcement method of a reinforced concrete pillar with a wall is demonstrated.

図１および図２に示すように、鉄筋コンクリート柱１の屋外側の面に補強鋼板１０をアンカーボルト５などで固定する。補強鋼板１０を人力で運ぶには重いため、および施工性を考慮して、複数枚に分割された補強鋼板を使用することもできる。補強鋼板１０の一対の第１の連結片１２はそれぞれ屋外側へ突出することになる。 As shown in FIGS. 1 and 2, a reinforcing steel plate 10 is fixed to an outdoor surface of the reinforced concrete column 1 with anchor bolts 5 or the like. In order to carry the reinforcing steel plate 10 manually, it is heavy, and considering the workability, a reinforcing steel plate divided into a plurality of sheets can be used. A pair of 1st connection piece 12 of the reinforcement steel plate 10 will each protrude to the outdoor side.

次に、この補強鋼板１０の屋外側に第１および第２の囲い鋼板２１、２２を配設し、第１および第２の囲い鋼板２１、２２の各第２の連結片２５をそれぞれ補強鋼板１０の第１の連結片１２の外側に配置する。第１および第２の囲い鋼板２１、２２の外板２４の端部は互いに重なる。 Next, the 1st and 2nd enclosure steel plates 21 and 22 are arrange | positioned in the outdoor side of this reinforcement steel plate 10, and each 2nd connection piece 25 of the 1st and 2nd enclosure steel plates 21 and 22 is each a reinforcement steel plate. It arrange | positions on the outer side of the 10 1st connection piece 12. FIG. The ends of the outer plate 24 of the first and second surrounding steel plates 21 and 22 overlap each other.

次に、第１および第２の囲い鋼板２１、２２の外面に接着剤を塗布し、第１および第２の囲い鋼板２１、２２の外面に補強シート１８を一重または２重以上に張り付ける。所定幅の補強シート１８を使用する場合は、図１に示すように、横方向に長い補強シート１８を第１および第２の囲い鋼板２１、２２の外面に上下に複数張り付けて面状のシートを形成するのがよい。 Next, an adhesive is applied to the outer surfaces of the first and second enclosure steel plates 21, 22, and the reinforcing sheet 18 is attached to the outer surfaces of the first and second enclosure steel plates 21, 22 in a single layer or a double layer or more. When a reinforcing sheet 18 having a predetermined width is used, as shown in FIG. 1, a plurality of reinforcing sheets 18 that are long in the lateral direction are attached to the outer surfaces of the first and second surrounding steel plates 21 and 22 in a vertical direction to form a planar sheet. It is good to form.

その後、補強シート１８の両端部を外側から押さえるように、上下方向に長い座金プレート１４を第１および第２の囲い鋼板２１、２２の第２の連結片２５の外側に配設する。次に、左右に配設された座金プレート１４間に亘ってタイバー１５を通し、タイバー１５の先端部に形成したネジ部にナット１６を螺合する。 Thereafter, the washer plate 14 that is long in the vertical direction is disposed outside the second connecting piece 25 of the first and second surrounding steel plates 21 and 22 so as to press both ends of the reinforcing sheet 18 from the outside. Next, the tie bar 15 is passed between the washer plates 14 disposed on the left and right sides, and the nut 16 is screwed into the screw portion formed at the tip of the tie bar 15.

この操作によって、第１および第２の囲い鋼板２１、２２は、補強鋼板１０を介して鉄筋コンクリート柱に固定されると共に、補強シート１８は第１および第２の囲い鋼板２１、２２の外面を強く締め付けることになる。壁面にも補強シートを貼り付ける場合には、予め壁面に接着剤を塗布しておく。 By this operation, the first and second enclosure steel plates 21 and 22 are fixed to the reinforced concrete column via the reinforcement steel plate 10, and the reinforcement sheet 18 strongly strengthens the outer surfaces of the first and second enclosure steel plates 21 and 22. Tighten. When a reinforcing sheet is attached to the wall surface, an adhesive is applied to the wall surface in advance.

次いで、補強鋼板１０と第１および第２の囲い鋼板２１、２２との間に形成される空間部２６内にグラウト材７を充填して固化させ、補強鋼板１０に囲い鋼板２１、２２を一体化させる。 Next, the space 26 formed between the reinforcing steel plate 10 and the first and second surrounding steel plates 21 and 22 is filled with the grout material 7 and solidified, and the surrounding steel plates 21 and 22 are integrated with the reinforcing steel plate 10. Make it.

このような壁付き鉄筋コンクリート柱の補強方法では、補強鋼板１０と囲い鋼板２１、２２との間の空間部２６に充填されたグラウト材７を介して第１および第２の囲い鋼板２１、２２および補強鋼板１０と鉄筋コンクリート柱１とが一体化し、鉄筋コンクリート柱１の強度が向上すると共に、柱の靭性が向上する。鉄筋コンクリート柱にせん断力が作用した場合には、第１および第２の囲い鋼板２１、２２が相互にスライドすることで補強シート１８に力が伝達するため靭性が大きくなり、その結果として鉄筋コンクリート柱１のせん断耐力が向上する。囲い鋼板２１、２２に巻きつける補強シート１８の巻き数を増減することによって鉄筋コンクリート柱１の補強強度を調整することもできる。 In such a method of reinforcing a reinforced concrete column with a wall, the first and second surrounding steel plates 21 and 22 and the second surrounding steel plates 21 and 22 through the grout material 7 filled in the space 26 between the reinforcing steel plate 10 and the surrounding steel plates 21 and 22, and The reinforcing steel plate 10 and the reinforced concrete column 1 are integrated, so that the strength of the reinforced concrete column 1 is improved and the toughness of the column is improved. When a shearing force is applied to the reinforced concrete column, the first and second surrounding steel plates 21 and 22 slide to each other, and the force is transmitted to the reinforcing sheet 18 so that the toughness is increased. As a result, the reinforced concrete column 1 The shear strength of is improved. The reinforcing strength of the reinforced concrete column 1 can be adjusted by increasing or decreasing the number of turns of the reinforcing sheet 18 wound around the surrounding steel plates 21 and 22.

以下の第２実施例〜第４実施例に示すように、第１および第２の囲い鋼板２１、２２に、第１および第２の囲い鋼板２１、２２のスライドを制限する制限部を形成してもよい。
（第２実施例）
図３および図４に示すように、第１および第２の囲い鋼板２１、２２の外板２４の対向する面に制限部として摩擦部３０を形成してもよい。摩擦部３０の幅寸法（つまり、摩擦部の面積）は任意に設定することができる。 As shown in the following second to fourth embodiments, the first and second enclosure steel plates 21 and 22 are formed with limiting portions that restrict the sliding of the first and second enclosure steel plates 21 and 22. May be.
(Second embodiment)
As shown in FIGS. 3 and 4, a friction portion 30 may be formed as a limiting portion on the opposing surfaces of the outer plate 24 of the first and second surrounding steel plates 21 and 22. The width dimension of the friction part 30 (that is, the area of the friction part) can be arbitrarily set.

該摩擦部３０は、第１および第２の囲い鋼板２１、２２の外板２４の対向する面に設けられた凹凸であり得る。この凹凸は突条および/または凹溝３１を含むことができ、例えば、図４に示すように、第１および第２の囲い鋼板２１、２２の外板２４の対向する面に凹溝３１を格子状に設け、あるいは突状を格子状に設けることにより摩擦部３０を形成することができる。第１および第２の囲い鋼板２１、２２の端部の対向する面に多数の突部を設けることにより摩擦部３０を形成してもよい。摩擦部３０は、第１および第２の囲い鋼板２１，２２の外板２４の対向する面の少なくとも一方に設けられる。 The friction portion 30 may be unevenness provided on the opposing surfaces of the outer plate 24 of the first and second surrounding steel plates 21 and 22. The irregularities can include protrusions and / or grooves 31. For example, as shown in FIG. 4, the grooves 31 are formed on the opposing surfaces of the outer plates 24 of the first and second surrounding steel plates 21 and 22. The friction part 30 can be formed by providing a lattice shape or providing a protrusion shape in a lattice shape. The friction portion 30 may be formed by providing a large number of protrusions on the opposing surfaces of the end portions of the first and second surrounding steel plates 21 and 22. The friction portion 30 is provided on at least one of the opposing surfaces of the outer plate 24 of the first and second surrounding steel plates 21 and 22.

この摩擦部３０は、鉄筋コンクリート柱１にせん断力が作用したときに、第１および第２の囲い鋼板２１、２２の外板２４のスライドを許容しながら、そのスライド移動に抵抗を与えるものである。従って、摩擦部３０のスライド抵抗力（摩擦力）は、予想される鉄筋コンクリート柱１が受けるせん断力に応じて設定される。 This friction part 30 gives resistance to the sliding movement while allowing the outer plate 24 of the first and second surrounding steel plates 21 and 22 to slide when a shearing force acts on the reinforced concrete column 1. . Therefore, the sliding resistance force (friction force) of the friction part 30 is set according to the expected shearing force that the reinforced concrete column 1 receives.

上記凹凸の程度（凹凸の深さ、凹凸が設けられた部分の面積など）を変えることにより、第１および第２の囲い鋼板２１、２２の外板２４のスライド移動量が増大するにつれて、摩擦力が徐々にまたは段階的に増大するよう構成してもよい。
（第３実施例）
図５および図６に示すように、制限部は、一方の囲い鋼板２２（第２の囲い鋼板２２）の外板２４に形成された水平方向に長い長孔３３と、隣接する他方の囲い鋼板２１（第１の囲い鋼板２１）の外板２４に固定されたストッパー３４とを有してもよい。このストッパー３４は外板２４の表面から突出して長孔３３に挿入されている。 As the amount of sliding movement of the outer plate 24 of the first and second surrounding steel plates 21 and 22 increases by changing the degree of the unevenness (the depth of the unevenness, the area of the portion where the unevenness is provided, etc.), the friction increases. You may comprise so that force may increase gradually or in steps.
(Third embodiment)
As shown in FIG. 5 and FIG. 6, the restricting portion includes a horizontally long slot 33 formed in the outer plate 24 of one enclosure steel plate 22 (second enclosure steel plate 22) and the other enclosure steel plate adjacent thereto. 21 (first enclosure steel plate 21) may have a stopper 34 fixed to the outer plate 24. The stopper 34 protrudes from the surface of the outer plate 24 and is inserted into the long hole 33.

ストッパー３４は第１の囲い鋼板２１の端部に溶接、ネジなどによって固定されている。ストッパー３４の外径は長孔３３の短径寸法よりも小寸法とされ、長孔３３内を水平方向へ移動可能である。このストッパー３４のスライド可能な距離は、繊維シート１８が引っ張りにより切断する限度以内に設定される。 The stopper 34 is fixed to the end of the first enclosure steel plate 21 by welding, screws or the like. The outer diameter of the stopper 34 is smaller than the short diameter dimension of the long hole 33, and the stopper 34 can move in the horizontal direction in the long hole 33. The slidable distance of the stopper 34 is set within a limit at which the fiber sheet 18 is cut by pulling.

第１および第２の囲い鋼板２１、２２が相対的にスライドすると、該ストッパー３４が長孔３３の端縁に当たるために、第１および第２の囲い鋼板２１、２２のスライドが制限される。 When the first and second surrounding steel plates 21 and 22 slide relative to each other, the stopper 34 hits the edge of the long hole 33, so that the sliding of the first and second surrounding steel plates 21 and 22 is restricted.

この実施例によれば、第１および第２の囲い鋼板２１、２２のスライド距離がストッパー３４の移動距離内に制限されるため、鉄筋コンクリート柱１に予想以上の強度のせん断力が作用したときに特に有効である。この第１および第２の囲い鋼板２１、２２の相対的な一定距離のスライド移動は許容されるが、設定距離以上のスライド移動はできない。それゆえ、補強シート１８が破断する前に第１および第２の囲い鋼板２１、２２の移動が規制されるので、補強シート１８が破断して鉄筋コンクリート柱１が崩壊する事態を防止することができる。 According to this embodiment, since the sliding distance of the first and second surrounding steel plates 21 and 22 is limited within the moving distance of the stopper 34, when a shearing force greater than expected is applied to the reinforced concrete column 1. It is particularly effective. The first and second surrounding steel plates 21 and 22 are allowed to slide relative to each other at a constant distance, but cannot slide beyond the set distance. Therefore, since the movement of the first and second surrounding steel plates 21 and 22 is restricted before the reinforcing sheet 18 breaks, the situation where the reinforcing sheet 18 breaks and the reinforced concrete column 1 collapses can be prevented. .

第２の囲い鋼板２２にはストッパーを挿通するための長孔３３が形成されるだけであるので、第２の囲い鋼板２２の強度低下を防止することもできる。 Since only the long hole 33 for inserting the stopper is formed in the second enclosure steel plate 22, it is possible to prevent the strength of the second enclosure steel plate 22 from being lowered.

なお、上記構成とは逆に、内側に配設された第１の囲い鋼板２１の外板２４に水平方向に長く形成された長孔と、外側に配設された第２の囲い鋼板２２の外板２４に固定されかつ該長孔内に挿通されるストッパーとから制限部を構成してもよい。
（第４実施例）
この実施例は、摩擦部と長孔での移動制限との両者を組み合わせたものである。 Contrary to the above configuration, a long hole formed in the outer plate 24 of the first enclosure steel plate 21 disposed on the inner side in the horizontal direction and a second enclosure steel plate 22 disposed on the outer side. You may comprise a restriction | limiting part from the stopper fixed to the outer plate | board 24 and penetrated in this long hole.
(Fourth embodiment)
In this embodiment, both the friction part and the movement restriction in the long hole are combined.

図５および図６で示したストッパーの代わりに、図７および図８に示すように、固定金具３６が内側に配置された囲い鋼板２１に固定されている。 Instead of the stopper shown in FIGS. 5 and 6, as shown in FIGS. 7 and 8, a fixing metal fitting 36 is fixed to the surrounding steel plate 21 disposed inside.

固定金具３６は、囲い鋼板２１の端部に固定されたボルト３７と該ボルト３７のネジ部に螺合されるナット３８とを有する。該ボルト３７のネジ部が長孔３３に挿通され、該ボルト３７先端のネジ部にナット３８を螺合することによって、外側に配置された囲い鋼板２２の長孔３３の周縁が該ナット３８と囲い鋼板２１との間で挟まれ、内側の囲い鋼板２１および外側の囲い鋼板２２の接触面３９に摩擦力が生じる。 The fixing bracket 36 includes a bolt 37 fixed to the end portion of the surrounding steel plate 21 and a nut 38 screwed into the screw portion of the bolt 37. The threaded portion of the bolt 37 is inserted into the elongated hole 33, and the nut 38 is screwed into the threaded portion at the tip of the bolt 37, so that the periphery of the elongated hole 33 of the surrounding steel plate 22 disposed on the outer side becomes the nut 38. A frictional force is generated between the contact surface 39 of the inner side steel plate 21 and the outer side steel plate 22 between the steel plate 21 and the inner side steel plate 21.

ナット３８の回転を円滑にするため、ワッシャあるいはスリーブなどを該ナット３８と外側の囲い鋼板２２との間に配置してもよい。 In order to make the rotation of the nut 38 smooth, a washer or a sleeve may be disposed between the nut 38 and the outer surrounding steel plate 22.

このように、第１および第２の囲い鋼板２１、２２の制限部を、第２の囲い鋼板２２の端部に形成した長孔３３と、第１の囲い鋼板２１の端部に固定した金具３６とから構成すると、第２の囲い鋼板２２の外側からの操作によりナット３８をボルト３７のネジ部に螺合することによって両囲い鋼板２１、２２間のスライド抵抗力を調整することができ、施工性に優れる。上記金具３６はストッパーとしても機能することができる。
（第５実施例）
図９に第５実施例を示している。 As described above, the restriction portion of the first and second surrounding steel plates 21 and 22 is the elongated hole 33 formed in the end portion of the second surrounding steel plate 22 and the metal fitting fixed to the end portion of the first surrounding steel plate 21. 36, it is possible to adjust the sliding resistance between the steel plates 21 and 22 by screwing the nut 38 into the threaded portion of the bolt 37 by an operation from the outside of the second steel plate 22. Excellent workability. The metal fitting 36 can also function as a stopper.
(5th Example)
FIG. 9 shows a fifth embodiment.

この実施例では、鉄筋コンクリート柱１に隣接する壁３にスリット４２をあけ、このスリット４２を通して、補強シート１８を鉄筋コンクリート柱１の周囲に巻き付けたものである。この構成によれば、連続する補強シート１８を鉄筋コンクリート柱１と第１および第２の囲い鋼板２１、２２の周囲に巻きつけて施工できるので、補強シート１８による靭性が上がり、施工性も向上する。 In this embodiment, a slit 42 is formed in the wall 3 adjacent to the reinforced concrete column 1, and the reinforcing sheet 18 is wound around the reinforced concrete column 1 through the slit 42. According to this configuration, the continuous reinforcing sheet 18 can be wound around the reinforced concrete column 1 and the first and second surrounding steel plates 21 and 22, so that the toughness by the reinforcing sheet 18 is increased and the workability is also improved. .

この実施例では、連続する長い補強シート１８を用いて、柱１の上下に亘って補強シート１８を巻きつけるようにしてもよい。ぐるぐる巻きにされた補強シート１８によって面状のシートが形成されるので、補強シート１８による靭性がさらに向上する。 In this embodiment, the reinforcing sheet 18 may be wound around the top and bottom of the column 1 using a continuous long reinforcing sheet 18. Since the planar sheet is formed by the reinforcing sheet 18 wound around, the toughness of the reinforcing sheet 18 is further improved.

補強シート１８を巻きつけるには、第１および第２の囲い鋼板２１、２２の外面に接着剤を塗布し、および/または鉄筋コンクリート柱１の外面に接着剤を塗布し、その後、補強シート１８を第１および第２の囲い鋼板２１、２２および柱１の外面に張り付け、上記のとおり座金プレート１４、タイバー１５、およびナット１６によって補強シート１８を囲い鋼板に固定する。
（第６実施例）
図１０に示すように、鉄筋コンクリート柱１の屋内側の面に横断面Ｌ字形の囲い鋼板４４を配置し、その外側に上記のように補強シート１８を巻きつけてもよい。 In order to wind the reinforcing sheet 18, an adhesive is applied to the outer surfaces of the first and second surrounding steel plates 21 and 22, and / or an adhesive is applied to the outer surface of the reinforced concrete column 1, and then the reinforcing sheet 18 is attached. The reinforcing sheets 18 are fixed to the surrounding steel plates by the washer plates 14, the tie bars 15, and the nuts 16 as described above.
(Sixth embodiment)
As shown in FIG. 10, an enclosure steel plate 44 having an L-shaped cross section may be arranged on the indoor side surface of the reinforced concrete column 1 and the reinforcing sheet 18 may be wound around the outside thereof as described above.

囲い鋼板４４は、鉄筋コンクリート柱１の屋内側の角部を囲むように配設される。一方の囲い鋼板４４の室内側の端部に、隣接する他方の囲い鋼板４４の室内側の端部が重ね合わせられている。囲い鋼板４４の重ね合わせられた端部に上記の制限部を設けてもよい。
（第７実施例）
図１１に示すように、鉄筋コンクリート柱１の屋内側の面に、図１および図２で示したのと同様の構成を有する補強構造を設けてもよい。 The surrounding steel plate 44 is disposed so as to surround the corner portion on the indoor side of the reinforced concrete column 1. The indoor side end portion of the other adjacent steel plate 44 is overlapped with the indoor side end portion of the one surrounding steel plate 44. You may provide said restriction | limiting part in the edge part on which the surrounding steel plate 44 was piled up.
(Seventh embodiment)
As shown in FIG. 11, a reinforcing structure having the same configuration as that shown in FIGS. 1 and 2 may be provided on the indoor-side surface of the reinforced concrete column 1.

すなわち、鉄筋コンクリート柱の１の屋内側の面に補強鋼板１０をアンカーボルト５にて固定し、この補強鋼板１０に第１および第２の囲い鋼板２１、２２を、座金プレート、タイバー、ナットなどを用いて固定すると共に、補強シート１８を第１および第２の囲い鋼板２１，２２の周りに回して締め付け、補強鋼板１０と第１および第２の囲い鋼板２１，２２との間に形成される空間部２６にグラウト材７を充填するようにしてもよい。 That is, the reinforcing steel plate 10 is fixed to the indoor side surface of the reinforced concrete column 1 with the anchor bolt 5, and the first and second surrounding steel plates 21 and 22 are attached to the reinforcing steel plate 10 with a washer plate, a tie bar, a nut and the like. The reinforcing sheet 18 is turned around the first and second surrounding steel plates 21 and 22 and tightened to be formed between the reinforcing steel plate 10 and the first and second surrounding steel plates 21 and 22. The space part 26 may be filled with the grout material 7.

この構成によれば、図１および図２の実施例で示した補強効果が鉄筋コンクリート柱の屋外側および屋内側の両方で実現できる。 According to this configuration, the reinforcing effect shown in the embodiment of FIGS. 1 and 2 can be realized on both the outdoor side and the indoor side of the reinforced concrete column.

なお、囲い鋼板の端部に設けた制限部は、上記実施例に限定されない。例えば、囲い鋼板に設けた凹凸の程度（凹凸の深さ、凹凸が設けられた部分の面積など）を変えることにより、囲い鋼板２１，２２の外板２４のスライド移動量が増大するにつれて、摩擦力が徐々にまたは段階的に増大するよう構成してもよい。また、囲い鋼板の厚みを連続的あるいは間歇的に増大させることにより、囲い鋼板がスライド移動するにつれてそのスライドが制限されるよう構成してもよい。 In addition, the restriction | limiting part provided in the edge part of an enclosure steel plate is not limited to the said Example. For example, as the amount of slide movement of the outer plate 24 of the surrounding steel plates 21 and 22 increases by changing the degree of unevenness provided on the surrounding steel plates (depth of the unevenness, area of the portion where the unevenness is provided, etc.), the friction You may comprise so that force may increase gradually or in steps. Moreover, you may comprise so that the slide may be restrict | limited as the enclosure steel plate slides by increasing the thickness of an enclosure steel plate continuously or intermittently.

上記各実施形態では、鉄筋コンクリート柱１の断面形状は四角形であるが、鉄筋コンクリート柱１は４角形以外の多角柱（例えば、５角柱、６角柱など）、円柱などであっても本発明は適用できる。その場合、囲い鋼板２１，２２の折り曲げ角度は柱１の外形に沿った形状とされる。例えば、円柱用の囲い鋼板の断面形状は、円柱の外形に沿った円弧状、半円形、扇形とされる。 In each of the embodiments described above, the cross-sectional shape of the reinforced concrete column 1 is a quadrangle, but the present invention can be applied even if the reinforced concrete column 1 is a polygonal column (for example, a pentagonal column, a hexagonal column) other than a quadrangle, a cylinder, or the like. . In that case, the bending angle of the surrounding steel plates 21 and 22 is a shape along the outer shape of the column 1. For example, the cross-sectional shape of the enclosure steel plate for a cylinder is an arc shape, a semicircular shape, or a sector shape along the outer shape of the cylinder.

囲い鋼板の数は４枚に限らず、搬送時の重量などを考慮して適宜設定される。四角柱の鉄筋コンクリート柱に適用する場合は、例えば、断面コ字形に形成した２枚の囲い鋼板を使用することもできる。囲い鋼板を上下に複数連結して柱の周りに取り付けるようにしてもよい。 The number of surrounding steel plates is not limited to four, and is set as appropriate in consideration of the weight during transportation. When applied to a square reinforced concrete column, for example, two enclosed steel plates formed in a U-shaped cross section can be used. A plurality of surrounding steel plates may be connected up and down and attached around the column.

補強鋼板１０の連結片１２と囲い鋼板２１、２２の連結片２５は、ボルト・ナット１６等の固定具によって連結してもよい。 The connecting piece 12 of the reinforcing steel plate 10 and the connecting piece 25 of the surrounding steel plates 21 and 22 may be connected by a fixture such as a bolt / nut 16.

第１の囲い鋼板２１の第２の連結片２５が補強鋼板１０の一方側の第１の連結片１２の内側に配設され、第２の囲い鋼板２２の第２の連結片２５が該補強鋼板１０の他方側の第１の連結片１２の内側に配設されてもよい。その際も、該第１および第２の囲い鋼板２２の外板２４の先端部がスライド可能に重なる。 The second connecting piece 25 of the first surrounding steel plate 21 is disposed inside the first connecting piece 12 on one side of the reinforcing steel plate 10, and the second connecting piece 25 of the second surrounding steel plate 22 is the reinforcing member. You may arrange | position inside the 1st connection piece 12 of the other side of the steel plate 10. FIG. Also at that time, the front end portions of the outer plates 24 of the first and second surrounding steel plates 22 are slidably overlapped.

図１に示した実施例では、補強鋼板１０をアンカーボルト５によって壁面に固定したが、補強鋼板１０を接着剤を用いて壁面に固定してもよい。その場合には、鉄筋コンクリート柱１を全く破壊することがない。 In the embodiment shown in FIG. 1, the reinforcing steel plate 10 is fixed to the wall surface by the anchor bolt 5, but the reinforcing steel plate 10 may be fixed to the wall surface using an adhesive. In that case, the reinforced concrete column 1 is not destroyed at all.

上記実施例では、柱の両側に壁が形成された実施例を示したが、柱の片側に壁が形成された建造物、柱の隣接する側面に直交する形態で壁が連続している建造物の場合にも本発明は適用できる。 In the above embodiment, an example is shown in which walls are formed on both sides of the pillar. However, a structure in which a wall is formed on one side of the pillar, a construction in which the walls are continuous in a form perpendicular to the side surface adjacent to the pillar. The present invention can also be applied to objects.

さらに、トンネルの中にある柱の補強にも本発明は適用できる。つまり、トンネルの中の柱を補強する際には、柱の裏側が土中であり人が回れない場合でも、柱のトンネル側からのみで施工が可能である。また、地下鉄に設けられた柱を補強する場合も本発明は適応できる。つまり、地下鉄の壁間に柱が立っていて、柱の背面側へ人が回って施工できない場合でも、本発明は適用可能である。 Furthermore, the present invention can be applied to the reinforcement of a pillar in a tunnel. In other words, when reinforcing a pillar in a tunnel, construction is possible only from the tunnel side of the pillar, even if the back side of the pillar is in the ground and people cannot turn around. The present invention can also be applied to the case where a pillar provided in a subway is reinforced. In other words, the present invention is applicable even when a pillar stands between the walls of the subway and a person cannot turn around and work on the back side of the pillar.

本発明は、建造物の耐震性を高めるため、壁付きコンクリート柱を補強する補強構造を提供する。 The present invention provides a reinforcing structure that reinforces a walled concrete column in order to increase the earthquake resistance of a building.

１コンクリート柱
３壁
５アンカーボルト
１０補強鋼板
１１固定板
１２第１の連結片
１４座金プレート
１５タイバー
１８補強シート
２１第１の囲い鋼板
２２第２の囲い鋼板
２４外板
２５第２の連結片
２６空間部 DESCRIPTION OF SYMBOLS 1 Concrete pillar 3 Wall 5 Anchor bolt 10 Reinforcement steel plate 11 Fixing plate 12 First connection piece 14 Washer plate 15 Tie bar 18 Reinforcement sheet 21 First enclosure steel plate 22 Second enclosure steel plate 24 Outer plate 25 Second connection piece
26 Space

Claims

It is a reinforcing structure of a concrete column with a wall provided with a wall on the side of the concrete column,
A reinforcing steel plate fixed to the surface of the concrete column on the outdoor side, a surrounding steel plate disposed outside the reinforcing steel plate, a reinforcing sheet attached to the outside of the surrounding steel plate with an adhesive, and the reinforcing steel plate; A grout material filled in a space formed between the surrounding steel plates,
The reinforcing steel plate has a fixing plate fixed to the outdoor side surface of the concrete column, and first connecting pieces bent from the both ends of the fixing plate to the outdoor side, respectively.
The enclosure steel plate has a first enclosure steel plate disposed at one end portion of the reinforcing steel plate, and a second enclosure steel plate disposed at the other end portion of the reinforcement steel plate,
The first and second surrounding steel plates each have an outer plate and a second connecting piece bent from an end portion of the outer plate,
A second connecting piece of the first enclosure steel plate is connected to one first connecting piece of the reinforcing steel plate;
A second connecting piece of the second enclosure steel plate is connected to the other first connecting piece of the reinforcing steel plate;
A reinforcing structure of a concrete column with a wall in which ends of outer plates of the first and second enclosure steel plates are slidably overlapped.

The reinforcement structure of a concrete pillar with a wall according to claim 1, wherein the reinforcing steel plate is formed in a U-shaped cross section.

The reinforcing structure of a concrete column with a wall according to claim 1 or 2, wherein the first and second surrounding steel plates are formed in an L-shaped cross section.

The walled concrete pillar according to any one of claims 1 to 3, wherein the first connecting piece of the reinforcing steel plate and the second connecting piece of the first and second surrounding steel plates are connected by a tie bar and a nut. Reinforced structure.

A second connecting piece of each of the first and second surrounding steel plates is disposed outside the pair of first connecting pieces of the reinforcing steel plate;
A washer plate is disposed outside each of the second connecting pieces, the reinforcing sheet is interposed between the second connecting piece and the washer plate, and a tie bar is passed between the pair of washer plates. By screwing a nut into a screw portion formed at the tip of the tie bar, the first connecting piece of the reinforcing steel plate and the second connecting piece of the surrounding steel plate are connected, and the reinforcing sheet is connected to the surrounding steel plate . The reinforcement structure of a concrete pillar with a wall according to any one of claims 1 to 4, wherein the structure is sandwiched between a second connecting piece and the washer plate .

The reinforcement structure of a concrete pillar with a wall according to any one of claims 1 to 5, further comprising a restriction portion that restricts sliding of a sliding portion at an end of the enclosure steel plate.

The reinforcing structure for a concrete column with a wall according to claim 6, wherein the restricting portion is a friction portion for giving a sliding resistance to an end portion of the surrounding steel plate.

The reinforcing structure for a concrete pillar with a wall according to claim 7, wherein the friction portion is an unevenness formed on a surface of the slidable end facing each other.

The restriction portion has a long hole formed in one of the slide end portions in the horizontal direction and a stopper fixed to the other slide end portion and slidably inserted into the long hole. Item 7. A reinforcing structure for a concrete column with a wall according to Item 6.

The reinforcement structure of a concrete pillar with a wall according to any one of claims 1 to 9, wherein the reinforcing steel plate is fixed to the concrete pillar by an anchor bolt.

The reinforcement structure of a concrete pillar with a wall according to any one of claims 1 to 9, wherein the reinforcing steel plate is fixed to the concrete pillar with an adhesive.

The reinforcement structure of a concrete pillar with a wall according to any one of claims 1 to 11, wherein a reinforcing sheet is attached to an indoor side surface of the concrete pillar.

The structure for reinforcing a concrete pillar with a wall according to any one of claims 1 to 12, wherein a slit is formed in a wall adjacent to the concrete pillar, and the reinforcing sheet is attached around the concrete pillar through the slit.

An encircling steel plate is disposed on the indoor side surface of the concrete pillar, a slit is formed in a wall adjacent to the concrete pillar, the reinforcing sheet is pasted around the concrete pillar through the slit, and the reinforcing sheet is The reinforcement structure of a concrete pillar with a wall according to any one of claims 1 to 12, wherein the enclosure steel plate is fastened to the concrete pillar side.

Fixing the reinforcing steel plate to the outdoor side surface of the concrete pillar,
Arranging a surrounding steel plate outside the reinforcing steel plate;
A step of attaching a reinforcing sheet to the outside of the enclosure steel plate with an adhesive;
A step of filling a grout material in a space formed between the reinforcing steel plate and the surrounding steel plate,
A method of reinforcing a concrete column with a wall, in which a wall is provided on a side surface of the concrete column,
The reinforcing steel plate has a fixing plate fixed to the outdoor side surface of the concrete column, and first connecting pieces bent from the both ends of the fixing plate to the outdoor side, respectively.
The enclosure steel plate has a first enclosure steel plate disposed at one end portion of the reinforcing steel plate, and a second enclosure steel plate disposed at the other end portion of the reinforcement steel plate,
The first and second surrounding steel plates each have an outer plate and a second connecting piece bent from an end portion of the outer plate,
A second connecting piece of the first enclosure steel plate is connected to one first connecting piece of the reinforcing steel plate;
A second connecting piece of the second enclosure steel plate is connected to the other first connecting piece of the reinforcing steel plate;
A method for reinforcing a walled concrete column in which ends of outer plates of the first and second enclosure steel plates are slidably overlapped.