JP5324764B2 - Column reinforcement structure - Google Patents
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- JP5324764B2 JP5324764B2 JP2007218188A JP2007218188A JP5324764B2 JP 5324764 B2 JP5324764 B2 JP 5324764B2 JP 2007218188 A JP2007218188 A JP 2007218188A JP 2007218188 A JP2007218188 A JP 2007218188A JP 5324764 B2 JP5324764 B2 JP 5324764B2
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- 230000002787 reinforcement Effects 0.000 title claims description 48
- 230000003014 reinforcing Effects 0.000 claims description 157
- 238000003780 insertion Methods 0.000 claims description 35
- 239000000945 filler Substances 0.000 claims description 25
- 229910000831 Steel Inorganic materials 0.000 claims description 24
- 239000010959 steel Substances 0.000 claims description 24
- 230000000875 corresponding Effects 0.000 claims description 14
- 239000003351 stiffener Substances 0.000 claims description 11
- 210000000614 Ribs Anatomy 0.000 description 36
- 238000005304 joining Methods 0.000 description 9
- 238000003466 welding Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 238000005553 drilling Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000011150 reinforced concrete Substances 0.000 description 4
- 230000000452 restraining Effects 0.000 description 4
- 239000004567 concrete Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000149 penetrating Effects 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000037250 Clearance Effects 0.000 description 1
- 240000008168 Ficus benjamina Species 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000035512 clearance Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000002708 enhancing Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
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Description
本発明は、既存建物の補強を目的とした柱補強構造に関する。
The present invention relates to a column reinforcement structure for the purpose of reinforcing an existing building.
例えば、耐震性が不十分であると判断された鉄筋コンクリート造や鉄骨鉄筋コンクリート造の既存建物に対する一般的な補強構造として、柱頭部分や柱脚部分の周囲に炭素繊維や鋼材等を巻きつけて拘束することで補強する場合がある。例えば、特許文献１には、断面矩形の柱に対して、各角部に配置されたコーナーピースをボルト等により締め付けることで柱を圧縮し、柱の膨張およびひび割れを抑制する補強構造が記載されている。
For example, as a general reinforcement structure for an existing building of reinforced concrete or steel reinforced concrete that is judged to have insufficient earthquake resistance, it is restrained by wrapping carbon fiber or steel around the column head or column base. It may be reinforced. For example, Patent Document 1 describes a reinforcing structure that compresses a column by tightening a corner piece arranged at each corner with a bolt or the like with respect to a column having a rectangular cross section and suppresses expansion and cracking of the column. ing.
ところが、前記従来の柱の周囲を囲むように補強部材を配設する補強構造は、耐震壁や袖壁等の構造壁が一体的に設けられた柱に適用する場合は、壁を部分的に切断する必要があった。そのため、切断部分を補強する必要が生じるなど、施工が煩雑であるとともに、施工費が高価であった。
However, when the reinforcing structure in which the reinforcing member is disposed so as to surround the conventional pillar is applied to a pillar integrally provided with a structural wall such as a seismic wall or a sleeve wall, the wall is partially formed. It was necessary to cut. Therefore, the construction is complicated and the construction cost is expensive, for example, it is necessary to reinforce the cut portion.
そのため、構造壁が一体的に設けられた柱の補強構造として、特許文献２や特許文献３には、柱の断面コの字状の鋼板等からなる補強板を、構造壁の接続部以外の柱表面に被覆し、補強板と柱との間に充填材を充填してなる耐震補強構造が開示されている。
Therefore, as a reinforcing structure for a column in which a structural wall is integrally provided, in Patent Document 2 and Patent Document 3, a reinforcing plate made of a steel plate or the like having a U-shaped cross section of a column is provided, except for a connecting portion of the structural wall. A seismic reinforcement structure is disclosed in which a column surface is covered and a filler is filled between a reinforcing plate and a column.
ところが、前記従来の耐震補強構造は、構造壁の接続部以外の柱の表面形状に応じて、補強板を形成する必要があり、この補強板の製造のコストが高価となるという問題点を有していた。
However, the conventional seismic reinforcement structure has a problem that it is necessary to form a reinforcing plate in accordance with the surface shape of the pillar other than the connecting portion of the structural wall, and the manufacturing cost of this reinforcing plate is high. Was.
また、鋼板等からなる補強板により、柱の露出部分を全体的に覆うため、補強板が大掛かりとなるとともに重量が重くなるため、取り扱いが困難となり、施工性が悪いという問題点を有していた。
In addition, since the entire exposed portion of the column is covered with a reinforcing plate made of a steel plate or the like, the reinforcing plate becomes large and heavy, which makes it difficult to handle and has poor workability. It was.
本発明は、前記の問題点を解決するためになされたものであり、施工性に優れ、かつ、安価に既存建物の耐震性能を向上させることを可能とした柱補強構造を提案することを課題とする。
The present invention has been made to solve the above-mentioned problems, and it is an object to propose a column reinforcing structure that is excellent in workability and that can improve the seismic performance of an existing building at low cost. And
前記課題を解決するために、本発明は、柱の頭部と脚部において前記柱の前面および左右の側面を拘束する柱補強構造であって、前記柱の前面および左右の側面に沿設された断面コの字状の補強部材と、前記柱に形成された固定部材挿入孔に配設されて、前記補強部材を前記柱の前面に締め付ける第一の固定部材と、前記補強部材と前記柱との隙間および前記固定部材挿入孔と前記第一の固定部材との隙間に充填される充填材と、前記柱の左右の側面に突設されて、前記補強部材を前記柱の側面に締め付ける第二の固定部材と、を備え、前記第一の固定部材は、前記柱と該柱に接続する梁との角部から柱せいの１／３以内の高さの位置にて先端が前記柱の中間よりも後面側となるように配置されていて、かつ、前記第二の固定部材と交差していて、前記柱の前面および左右の側面を前記補強部材により拘束していることを特徴としている。
In order to solve the above problems, the present invention provides a column reinforcing structure that restrains the front and left and right sides of the column at the head and legs of the column, and is provided along the front and left and right sides of the column. A U-shaped reinforcing member, a first fixing member disposed in a fixing member insertion hole formed in the column, and tightening the reinforcing member to the front surface of the column; and the reinforcing member and the column And a filler that fills the gap between the fixing member insertion hole and the first fixing member, and a left and right side surface of the column, and the reinforcing member is fastened to the side surface of the column. Two first fixing members, and the first fixing member has a tip that is at a height within one third of the column length from a corner of the column and a beam connected to the column. It is arranged to be on the rear side from the middle, and intersects with the second fixing member Te, and characterized in that it restrains the front and left and right side surfaces of the pillar by the reinforcing member.
かかる柱補強構造は、柱の頭部や脚部（端部）において、柱の前面および側面を拘束するため、柱端部におけるせん断破壊や付着割裂破壊等に起因するカバーコンクリートの剥落を防止し、柱のじん性を改善することが可能となる。
また、補強部材が、柱の全体を覆うのではなく、柱の頭部および脚部の少なくとも一方においてのみ柱を拘束するように形成されているため、材料費が安価であるとともに、取り扱いが容易で作業性に優れている。 This column reinforcement structure restrains the front and sides of the column at the column head and legs (ends), thus preventing the cover concrete from being peeled off due to shear failure or bond splitting failure at the column end. It becomes possible to improve the toughness of the pillar.
In addition, the reinforcing member is formed not to cover the entire column but to restrain the column only at at least one of the column head and leg, so that the material cost is low and the handling is easy. Excellent workability.
また、補強部材が、柱の全体を覆うのではなく、柱の頭部および脚部の少なくとも一方においてのみ柱を拘束するように形成されているため、材料費が安価であるとともに、取り扱いが容易で作業性に優れている。 This column reinforcement structure restrains the front and sides of the column at the column head and legs (ends), thus preventing the cover concrete from being peeled off due to shear failure or bond splitting failure at the column end. It becomes possible to improve the toughness of the pillar.
In addition, the reinforcing member is formed not to cover the entire column but to restrain the column only at at least one of the column head and leg, so that the material cost is low and the handling is easy. Excellent workability.
また、かかる柱補強構造は、補強部材が柱の頭部および脚部の少なくとも一方にだけ配置されるので、その取付作業が容易である。さらに、柱の頭部および脚部のみの補強であるため、比較的小スペースでの作業を可能とするとともに、既存の居住空間などの影響を最小限に抑えることが可能である。
また、前記補強部材と前記柱との隙間および前記固定部材挿入孔の隙間に、充填材が充填されていれば、補強部材と柱との一体化がより効果的に行われる。 Further, in such a column reinforcing structure, the reinforcing member is disposed only on at least one of the head portion and the leg portion of the column, so that the attaching operation is easy. Furthermore, since the reinforcement is only for the head and legs of the pillar, it is possible to work in a relatively small space and to minimize the influence of the existing living space.
Further, if the gap between the reinforcing member and the column and the gap between the fixing member insertion holes are filled with the filler, the reinforcement member and the column are more effectively integrated.
また、前記補強部材と前記柱との隙間および前記固定部材挿入孔の隙間に、充填材が充填されていれば、補強部材と柱との一体化がより効果的に行われる。 Further, in such a column reinforcing structure, the reinforcing member is disposed only on at least one of the head portion and the leg portion of the column, so that the attaching operation is easy. Furthermore, since the reinforcement is only for the head and legs of the pillar, it is possible to work in a relatively small space and to minimize the influence of the existing living space.
Further, if the gap between the reinforcing member and the column and the gap between the fixing member insertion holes are filled with the filler, the reinforcement member and the column are more effectively integrated.
また、第二の発明の柱補強構造は、柱の頭部と脚部において前記柱の前面および左右の側面を拘束する柱補強構造であって、前記柱の前面および左右の側面に沿設された断面コの字状の補強部材と、前記柱に形成された固定部材挿入孔に配設されて、前記補強部材を前記柱の前面に締め付ける第一の固定部材と、前記補強部材と前記柱との隙間および前記固定部材挿入孔と前記第一の固定部材との隙間に充填される充填材と、前記柱の左右の側面に突設されて、前記補強部材を前記柱の側面に締め付ける第二の固定部材と、を備え、前記柱の前面および左右の側面を前記補強部材により拘束していて、前記補強部材の前記柱の前面に対応する部分に、補剛材が設けられており、前記補剛材は、前記柱の前面に当接し、前記第一の固定部材の締付力を直接前記柱に伝達することを特徴としている。
この柱補強構造によれば、補強部材の増強効果を得ることができるとともに、補強部材が柱に当接することでより効果的に柱を拘束することが可能となる。 The column reinforcing structure of the second invention is a column reinforcing structure that restrains the front surface and the left and right side surfaces of the column at the head and legs of the column, and is provided along the front surface and the left and right side surfaces of the column. A U-shaped reinforcing member, a first fixing member disposed in a fixing member insertion hole formed in the column, and tightening the reinforcing member to the front surface of the column; and the reinforcing member and the column And a filler that fills the gap between the fixing member insertion hole and the first fixing member, and a left and right side surface of the column, and the reinforcing member is fastened to the side surface of the column. Two fixing members, the front side and the left and right side surfaces of the column are constrained by the reinforcing member, and a stiffener is provided in a portion corresponding to the front side of the column of the reinforcing member, The stiffener abuts against the front surface of the column and tightens the first fixing member. It is characterized by transmitting a force directly to the pillar.
According to this column reinforcing structure, the reinforcing effect of the reinforcing member can be obtained, and the column can be more effectively restrained by the reinforcing member coming into contact with the column.
この柱補強構造によれば、補強部材の増強効果を得ることができるとともに、補強部材が柱に当接することでより効果的に柱を拘束することが可能となる。 The column reinforcing structure of the second invention is a column reinforcing structure that restrains the front surface and the left and right side surfaces of the column at the head and legs of the column, and is provided along the front surface and the left and right side surfaces of the column. A U-shaped reinforcing member, a first fixing member disposed in a fixing member insertion hole formed in the column, and tightening the reinforcing member to the front surface of the column; and the reinforcing member and the column And a filler that fills the gap between the fixing member insertion hole and the first fixing member, and a left and right side surface of the column, and the reinforcing member is fastened to the side surface of the column. Two fixing members, the front side and the left and right side surfaces of the column are constrained by the reinforcing member, and a stiffener is provided in a portion corresponding to the front side of the column of the reinforcing member, The stiffener abuts against the front surface of the column and tightens the first fixing member. It is characterized by transmitting a force directly to the pillar.
According to this column reinforcing structure, the reinforcing effect of the reinforcing member can be obtained, and the column can be more effectively restrained by the reinforcing member coming into contact with the column.
また、前記補剛材が、前記補強部材の角部に設けられていれば、コの字状に形成された補強部材が開くことを防止し、拘束効果が高まる。
また、前記補剛材は、上下に複数段設けられていてもよい。 Further, if the stiffener is provided at the corner of the reinforcing member, the reinforcing member formed in a U-shape is prevented from opening, and the restraining effect is enhanced.
Further, the stiffener may be provided in a plurality of stages in the vertical direction.
また、前記補剛材は、上下に複数段設けられていてもよい。 Further, if the stiffener is provided at the corner of the reinforcing member, the reinforcing member formed in a U-shape is prevented from opening, and the restraining effect is enhanced.
Further, the stiffener may be provided in a plurality of stages in the vertical direction.
なお、本発明の柱補強構造において、前記補強部材は、断面コの字状に形成された鋼板であってもよいし、一片が前記前面、他片が前記側面に配置されるように断面Ｌ字状に形成された鋼板を２枚組み合わせたものであってもよい。
In the column reinforcing structure of the present invention, the reinforcing member may be a steel plate having a U-shaped cross section, or a cross section L so that one piece is disposed on the front surface and the other piece is disposed on the side surface. A combination of two steel plates formed in a letter shape may be used.
また、前記補強部材が、前記柱を前後に貫通する固定部材挿入孔に挿通した第一の固定部材により固定されていれば、柱の前後から均一に拘束力を付与するため好適である。
The front Symbol reinforcing member, be fixed by the first fixing member inserted through the fixing member insertion hole penetrating the pillar around, it is preferable to impart uniform restraining force from the front and rear pillars.
また、前記固定部材が、前記柱と該柱に接続する梁との角部から、柱せいの１／３以内の位置において固定されていてもよい。また、前記補強部材により拘束する前記柱の端部の範囲が柱せいの１／２以上の範囲であってもよい。ここで、柱せいとは、例えば壁に直行する方向の柱の断面寸法等、想定するせん断力の方向の断面寸法をいう。
The front Symbol fixing member, from the corner portion of the beam to be connected to the pillars and the pillar, may be fixed at a position within 1/3 of the pillars blame. Moreover, the range of the edge part of the said column restrained by the said reinforcement member may be a range more than 1/2 of the column. Here, the term “column” refers to a cross-sectional dimension in the direction of an assumed shearing force, such as a cross-sectional dimension of a column in a direction perpendicular to the wall.
また、前記柱の左右の側面に突設されて、前記補強部材を前記柱の側面に締め付ける第二の固定部材を備えているため、柱に横方向（左右方向）の大きな力を付与することができるので、柱端部の耐力がより増強される。
Also, so as to project on the left and right sides of the front Symbol column, because features a second fixing member tightening the reinforcing member to the side surface of the pillar, to impart a large force in the transverse direction (lateral direction) to the column As a result, the yield strength of the column end is further enhanced.
本発明の柱補強構造によれば、施工性に優れ、かつ、安価に既存建物の耐震性能を向上させることが可能となる。
According to the column reinforcement structure of the present invention, it is possible to improve the seismic performance of existing buildings with excellent workability and at low cost.
以下、本発明の好適な実施の形態について、図面を参照して説明する。なお、説明において、同一要素には同一の符号を用い、重複する説明は省略する。
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the drawings. In the description, the same reference numerals are used for the same elements, and duplicate descriptions are omitted.
＜第１の実施の形態＞
以下、第１の実施の形態について図１乃至図３を参照して説明する。
ここで、図１は、第１の実施の形態に係る柱補強構造の概要を示す斜視図である。また、図２は、図１に示す柱補強構造の詳細を示す図であって、（ａ）は正面図、（ｂ）はＸ−Ｘ断面図、（ｃ）はＹ−Ｙ断面図である。さらに、図３は、図１に示す柱補強構造の詳細を示す図であって、（ａ）は柱頭部の斜視図、（ｂ）は補強部材の斜視図である。 <First Embodiment>
Hereinafter, a first embodiment will be described with reference to FIGS. 1 to 3.
Here, FIG. 1 is a perspective view showing an outline of the column reinforcing structure according to the first embodiment. 2 is a diagram showing details of the column reinforcing structure shown in FIG. 1, wherein (a) is a front view, (b) is an XX sectional view, and (c) is a YY sectional view. . 3 is a diagram showing details of the column reinforcing structure shown in FIG. 1, wherein (a) is a perspective view of the column head and (b) is a perspective view of the reinforcing member.
以下、第１の実施の形態について図１乃至図３を参照して説明する。
ここで、図１は、第１の実施の形態に係る柱補強構造の概要を示す斜視図である。また、図２は、図１に示す柱補強構造の詳細を示す図であって、（ａ）は正面図、（ｂ）はＸ−Ｘ断面図、（ｃ）はＹ−Ｙ断面図である。さらに、図３は、図１に示す柱補強構造の詳細を示す図であって、（ａ）は柱頭部の斜視図、（ｂ）は補強部材の斜視図である。 <First Embodiment>
Hereinafter, a first embodiment will be described with reference to FIGS. 1 to 3.
Here, FIG. 1 is a perspective view showing an outline of the column reinforcing structure according to the first embodiment. 2 is a diagram showing details of the column reinforcing structure shown in FIG. 1, wherein (a) is a front view, (b) is an XX sectional view, and (c) is a YY sectional view. . 3 is a diagram showing details of the column reinforcing structure shown in FIG. 1, wherein (a) is a perspective view of the column head and (b) is a perspective view of the reinforcing member.
本実施形態に係る柱補強構造１は、図１に示すように、既存建物の柱１０の補強を行うものであって、柱１０の頭部１１および脚部１２のそれぞれにおいて、柱１０の前面１３および左右の側面１４，１５に沿って配設された補強部材２０により、柱１０を拘束するものである。
As shown in FIG. 1, the column reinforcement structure 1 according to the present embodiment reinforces a column 10 of an existing building, and includes a front surface of the column 10 in each of a head 11 and a leg 12 of the column 10. 13 and the reinforcing member 20 disposed along the left and right side surfaces 14 and 15 restrain the column 10.
柱１０は、図１に示すように、鉄筋コンクリート製で正方形断面に形成されている。また、左右の側面１４，１５には、隣接する他の柱との空間を閉塞するように形成された壁Ｗ，Ｗが接合されている。そして、柱１０の上端および下端には、図１および図２（ａ）に示すように、梁Ｂが一体に接合されている。なお、図１では、柱１０の上端に接続する梁Ｂの図示を省略している。
ここで、柱１０の断面形状は正方形に限定されるものではない。また、壁Ｗは、必ずしも、柱１０の左右に形成されている必要はない。また、既存建物も鉄筋コンクリート構造に限定されるものではない。 As shown in FIG. 1, the column 10 is made of reinforced concrete and has a square cross section. The left and right side surfaces 14 and 15 are joined with walls W and W formed so as to close a space with other adjacent columns. And the beam B is integrally joined to the upper end and lower end of the pillar 10, as shown to FIG. 1 and FIG. 2 (a). In FIG. 1, the illustration of the beam B connected to the upper end of the column 10 is omitted.
Here, the cross-sectional shape of the pillar 10 is not limited to a square. Moreover, the wall W does not necessarily need to be formed on the left and right of the column 10. Also, existing buildings are not limited to reinforced concrete structures.
ここで、柱１０の断面形状は正方形に限定されるものではない。また、壁Ｗは、必ずしも、柱１０の左右に形成されている必要はない。また、既存建物も鉄筋コンクリート構造に限定されるものではない。 As shown in FIG. 1, the column 10 is made of reinforced concrete and has a square cross section. The left and right side surfaces 14 and 15 are joined with walls W and W formed so as to close a space with other adjacent columns. And the beam B is integrally joined to the upper end and lower end of the pillar 10, as shown to FIG. 1 and FIG. 2 (a). In FIG. 1, the illustration of the beam B connected to the upper end of the column 10 is omitted.
Here, the cross-sectional shape of the pillar 10 is not limited to a square. Moreover, the wall W does not necessarily need to be formed on the left and right of the column 10. Also, existing buildings are not limited to reinforced concrete structures.
柱１０には、図２（ｂ）に示すように、補強部材２０を固定するためのアンカーボルト（第一の固定部材）３０を配設するための固定部材挿入孔１６が３箇所形成されている。
各固定部材挿入孔１６は、柱１０の前面１３から後面１７方向に、柱１０の中央付近までの深さに削孔することにより形成されている。この固定部材挿入孔１６は、図２（ａ）に示すように、柱１０と梁Ｂとの角部から柱せいの１／３以内の高さｈに、３箇所並んだ状態で形成されている。なお、固定部材挿入孔１６の形成は、柱１１に配筋された鉄筋に接触しないように形成する。 As shown in FIG. 2B, the pillar 10 is formed with three fixing member insertion holes 16 for arranging anchor bolts (first fixing members) 30 for fixing the reinforcing member 20. Yes.
Each fixing member insertion hole 16 is formed by drilling to a depth from the front surface 13 to the rear surface 17 of the column 10 to the vicinity of the center of the column 10. As shown in FIG. 2 (a), the fixing member insertion holes 16 are formed in a state of being arranged in three places at a height h within 1/3 of the column chamfer from the corner of the column 10 and the beam B. Yes. The fixing member insertion hole 16 is formed so as not to come into contact with the reinforcing bar arranged in the column 11.
各固定部材挿入孔１６は、柱１０の前面１３から後面１７方向に、柱１０の中央付近までの深さに削孔することにより形成されている。この固定部材挿入孔１６は、図２（ａ）に示すように、柱１０と梁Ｂとの角部から柱せいの１／３以内の高さｈに、３箇所並んだ状態で形成されている。なお、固定部材挿入孔１６の形成は、柱１１に配筋された鉄筋に接触しないように形成する。 As shown in FIG. 2B, the pillar 10 is formed with three fixing member insertion holes 16 for arranging anchor bolts (first fixing members) 30 for fixing the reinforcing member 20. Yes.
Each fixing member insertion hole 16 is formed by drilling to a depth from the front surface 13 to the rear surface 17 of the column 10 to the vicinity of the center of the column 10. As shown in FIG. 2 (a), the fixing member insertion holes 16 are formed in a state of being arranged in three places at a height h within 1/3 of the column chamfer from the corner of the column 10 and the beam B. Yes. The fixing member insertion hole 16 is formed so as not to come into contact with the reinforcing bar arranged in the column 11.
本実施形態では、固定部材挿入孔１６を断面円形に形成するものとするが、固定部材挿入孔１６の断面形状は限定されるものではない。また、固定部材挿入孔１６の箇所数も、限定されるものではなく、柱１０の形状寸法や、補強部材２０の形状等に応じて、適宜設定すればよい。また、固定部材挿入孔１６の孔径は、アンカーボルト３０のボルト径に応じて適宜設定する。
In the present embodiment, the fixing member insertion hole 16 is formed in a circular cross section, but the cross sectional shape of the fixing member insertion hole 16 is not limited. Further, the number of the fixing member insertion holes 16 is not limited, and may be set as appropriate according to the shape and size of the column 10 and the shape of the reinforcing member 20. Further, the hole diameter of the fixing member insertion hole 16 is appropriately set according to the bolt diameter of the anchor bolt 30.
また、柱１０には、図２（ｃ）に示すように、補強部材２０を固定するための締付ボルト（第二の固定部材）３２を挿通するための貫通孔１８が柱１０を左右に貫通して形成されている。
本実施形態では、貫通孔１８を、アンカーボルト３０と締付ボルト３２とが接触することがないように、固定部材挿入孔１６よりも低い位置に形成している（図２（ａ）参照）。また、貫通孔１８の形成は、柱１１に配筋された鉄筋に接触しないように形成する。 Further, as shown in FIG. 2 (c), the through hole 18 for inserting the fastening bolt (second fixing member) 32 for fixing the reinforcing member 20 is formed in the column 10 left and right. It is formed through.
In the present embodiment, the through hole 18 is formed at a position lower than the fixing member insertion hole 16 so that the anchor bolt 30 and the fastening bolt 32 do not contact each other (see FIG. 2A). . The through hole 18 is formed so as not to contact the reinforcing bar arranged in the column 11.
本実施形態では、貫通孔１８を、アンカーボルト３０と締付ボルト３２とが接触することがないように、固定部材挿入孔１６よりも低い位置に形成している（図２（ａ）参照）。また、貫通孔１８の形成は、柱１１に配筋された鉄筋に接触しないように形成する。 Further, as shown in FIG. 2 (c), the through hole 18 for inserting the fastening bolt (second fixing member) 32 for fixing the reinforcing member 20 is formed in the column 10 left and right. It is formed through.
In the present embodiment, the through hole 18 is formed at a position lower than the fixing member insertion hole 16 so that the anchor bolt 30 and the fastening bolt 32 do not contact each other (see FIG. 2A). . The through hole 18 is formed so as not to contact the reinforcing bar arranged in the column 11.
本実施形態では、貫通孔１８を断面円形に形成するものとするが、貫通孔１８の断面形状は限定されるものではない。また、貫通孔１８の箇所数も、限定されるものではなく、柱１０の形状寸法や、補強部材２０の形状等に応じて、適宜設定すればよい。また、貫通孔１８の孔径は、締付ボルト３２のボルト径に応じて適宜設定する。なお、貫通孔１８は必要に応じて形成すればよく、省略することも可能である。
In the present embodiment, the through hole 18 is formed in a circular cross section, but the cross sectional shape of the through hole 18 is not limited. Further, the number of the through holes 18 is not limited, and may be set as appropriate according to the shape and size of the pillar 10 and the shape of the reinforcing member 20. Further, the hole diameter of the through hole 18 is appropriately set according to the bolt diameter of the tightening bolt 32. Note that the through-hole 18 may be formed as necessary, and may be omitted.
補強部材２０は、図３（ａ）および（ｂ）に示すように、柱１０の前面１３に沿って形成された本体部２１と左右の側面１４，１５に沿って形成された左右の翼部２２，２３とにより、断面コの字状に形成された鋼板である。補強部材２０の高さは、柱せいの１／２倍以上、好ましくは柱せいの１／２〜１倍程度の高さに形成する。これにより、補強部材が柱の頭部１１および脚部１２を拘束する範囲が、柱せいの１／２以上、好ましくは１／２〜１の範囲となるように構成する。補強部材２０の形成方法は限定されるものではなく、例えば１枚の鋼板に折り曲げ加工を施すことにより形成してもよいし、３枚の鋼板を互いに溶接接合することにより形成してもよい。
As shown in FIGS. 3A and 3B, the reinforcing member 20 includes a main body portion 21 formed along the front surface 13 of the column 10 and left and right wing portions formed along the left and right side surfaces 14 and 15. 22 and 23, and a steel plate formed in a U-shaped cross section. The height of the reinforcing member 20 is formed to be 1/2 or more times as high as the pillar, preferably about 1/2 to 1 times as high as the pillar. Accordingly, the range in which the reinforcing member restrains the head portion 11 and the leg portion 12 of the column is configured to be 1/2 or more, preferably 1/2 to 1 of the column. The method for forming the reinforcing member 20 is not limited. For example, the reinforcing member 20 may be formed by bending one steel plate, or may be formed by welding the three steel plates to each other.
本体部２１には、図３（ｂ）および図２（ｂ）に示すように、柱１１に形成された固定部材挿入孔１６の位置に合わせて、ボルト孔２４が３箇所形成されている。本実施形態では、図３（ｂ）に示すように、本体部２１の高さ方向中間付近に、ボルト孔２４，２４，２４を等間隔で形成する。補強部材２０は、図２（ａ）および（ｂ）に示すように、柱１０に形成された固定部材挿入孔１６に配設されたアンカーボルト３０を、ボルト孔２４，２４を挿通させた状態で、本体部２１の外面側から締め付けることにより、柱１０に固定されている。
As shown in FIG. 3B and FIG. 2B, three bolt holes 24 are formed in the main body portion 21 in accordance with the positions of the fixing member insertion holes 16 formed in the pillar 11. In the present embodiment, as shown in FIG. 3B, bolt holes 24, 24, 24 are formed at equal intervals in the vicinity of the middle of the main body 21 in the height direction. As shown in FIGS. 2A and 2B, the reinforcing member 20 is in a state where the anchor bolts 30 disposed in the fixing member insertion holes 16 formed in the pillars 10 are inserted through the bolt holes 24 and 24. Thus, it is fixed to the column 10 by tightening from the outer surface side of the main body 21.
また、本体部２１の背面（柱１０の前面に対応する部分）には、図３（ｂ）に示すように、それぞれ３枚のリブ（補剛材）２５，２５，２５が２段（上段および中段）、計６枚設けられている。リブ２５は、鋼板を本体部２１に接合することにより形成されており、本体部２１と直交した状態で接合されている。また、リブ２５は、ボルト孔２４の上下にそれぞれ形成されている。
Further, as shown in FIG. 3B, three ribs (stiffeners) 25, 25, 25 are provided on the back surface of the main body portion 21 (the portion corresponding to the front surface of the column 10) (upper stage). 6) in total. The rib 25 is formed by bonding a steel plate to the main body portion 21 and is bonded in a state orthogonal to the main body portion 21. The ribs 25 are formed above and below the bolt holes 24, respectively.
また、各段のリブ２５，２５，２５は、互いに隙間を空けて並設されている。
さらに、各段において左右に配設されたリブ２５，２５は、それぞれ、本体部２１と翼部２２，２３との角部に配設されている。そして、角部のリブ２５は、本体部２１および翼部２２，２３に一体に接合されている。
なお、リブ２５の接合方法は限定されるものではないが、本実施形態では溶接接合により行う。また、リブ２５の個数および段数は限定されるものではない。また、リブ２５，２５，…の配置も限定されるものではなく、千鳥状に配置されていてもよい。 Further, the ribs 25, 25, 25 of each step are arranged side by side with a gap therebetween.
Further, the ribs 25, 25 arranged on the left and right in each stage are arranged at the corners of the main body 21 and the wings 22, 23, respectively. The corner ribs 25 are integrally joined to the main body portion 21 and the wing portions 22 and 23.
In addition, although the joining method of the rib 25 is not limited, in this embodiment, it performs by welding joining. The number of ribs 25 and the number of steps are not limited. Further, the arrangement of the ribs 25, 25,... Is not limited, and the ribs 25, 25,.
さらに、各段において左右に配設されたリブ２５，２５は、それぞれ、本体部２１と翼部２２，２３との角部に配設されている。そして、角部のリブ２５は、本体部２１および翼部２２，２３に一体に接合されている。
なお、リブ２５の接合方法は限定されるものではないが、本実施形態では溶接接合により行う。また、リブ２５の個数および段数は限定されるものではない。また、リブ２５，２５，…の配置も限定されるものではなく、千鳥状に配置されていてもよい。 Further, the ribs 25, 25, 25 of each step are arranged side by side with a gap therebetween.
Further, the ribs 25, 25 arranged on the left and right in each stage are arranged at the corners of the main body 21 and the wings 22, 23, respectively. The corner ribs 25 are integrally joined to the main body portion 21 and the wing portions 22 and 23.
In addition, although the joining method of the rib 25 is not limited, in this embodiment, it performs by welding joining. The number of ribs 25 and the number of steps are not limited. Further, the arrangement of the ribs 25, 25,... Is not limited, and the ribs 25, 25,.
また、本体部２１には、本体部２１の背面の下端に沿って下段のリブ２６が形成されている。下段のリブ２６は、一枚の鋼板が、左右の翼部２２，２３間に横設されるように形成されている。そして、下段のリブ２６は、本体部２１および翼部２２，２３に一体に接合されている。なお、リブ２６の接合方法は限定されるものではないが、本実施形態では溶接接合により行う。
Further, a lower rib 26 is formed on the main body 21 along the lower end of the back surface of the main body 21. The lower rib 26 is formed such that a single steel plate is placed between the left and right wing parts 22, 23. The lower rib 26 is integrally joined to the main body portion 21 and the wing portions 22 and 23. In addition, although the joining method of the rib 26 is not limited, in this embodiment, it performs by welding joining.
補強部材２０は、図２（ｂ）に示すように、リブ２５（２６）が、柱１０の前面１３に当接した状態で配設されている。
As shown in FIG. 2B, the reinforcing member 20 is disposed in a state where the ribs 25 (26) are in contact with the front surface 13 of the column 10.
左右の翼部２２，２３には、それぞれ、柱１０に形成された貫通孔１８の位置に対応して、ボルト孔２７，２７が１箇所ずつ形成されている。補強部材２０は、図２（ａ）および（ｃ）に示すように、アンカーボルト３０に加えて、柱１０に形成された貫通孔１８に挿通した締付ボルト３２を、ボルト孔２７，２７を挿通させた状態で、翼部２２，２３の外面から締め付けることにより柱１０に固定されている。
Bolt holes 27 and 27 are formed in each of the left and right wing portions 22 and 23 corresponding to the positions of the through holes 18 formed in the pillar 10. As shown in FIGS. 2A and 2C, the reinforcing member 20 includes, in addition to the anchor bolts 30, tightening bolts 32 inserted through the through holes 18 formed in the pillars 10, and bolt holes 27 and 27. In the inserted state, it is fixed to the column 10 by tightening from the outer surfaces of the wing portions 22 and 23.
図２（ｃ）に示すように、本実施形態では、翼部２２，２３の長さである翼部長ｚを柱１０の側面１４，１５の前面１３から前後方向中間部まで（柱せいの１／４程度）の長さとして、補強部材２０が、柱１０の前面１３および側面１４，１５の一部を覆う構成としたが、翼部２２，２３の形状寸法は、適宜設定することが可能である。例えば、翼部２２，２３の翼部長ｚを壁Ｗの前面に当接する長さとすることで、側面１４，１５の全体を覆う構成としてもよい。
As shown in FIG. 2 (c), in the present embodiment, the wing length z, which is the length of the wing portions 22, 23, is changed from the front surface 13 of the side surfaces 14, 15 of the column 10 to the middle portion in the front-rear direction. Although the reinforcing member 20 covers the front surface 13 and part of the side surfaces 14 and 15 of the pillar 10 as the length of about / 4), the shape dimensions of the wing portions 22 and 23 can be set as appropriate. It is. For example, it is good also as a structure which covers the whole side surfaces 14 and 15 by making the wing | blade part length z of the wing | blade part 22 and 23 into the length contact | abutted to the front surface of the wall W. FIG.
アンカーボルト３０は、図２（ａ）に示すように、柱１０と梁Ｂとの角部から柱せいの１／３以内の高さｈに位置するように配置されている。なお、アンカーボルト３０の本数は限定されるものではない。また、本実施形態では、第一の固定部材として、アンカーボルト３０を使用するものとしたが、第一の固定部材は、補強部材２０を締付固定することができれば、アンカーボルトに限定されるものではない。
As shown in FIG. 2 (a), the anchor bolt 30 is disposed so as to be located at a height h within 1/3 of the column length from the corner of the column 10 and the beam B. The number of anchor bolts 30 is not limited. In this embodiment, the anchor bolt 30 is used as the first fixing member. However, the first fixing member is limited to the anchor bolt as long as the reinforcing member 20 can be fastened and fixed. It is not a thing.
アンカーボルト３０の頭部には、定着部材３０ａとしてのナットが固定されている。アンカーボルト３０は、定着部材３０ａが頭部に形成されていることにより、補強部材２０による柱１０の頭部１１（脚部１２）の拘束に必要な定着長を確保している。なお、定着部材３０ａの構成は、アンカーボルト３０の定着力を増加させることが可能であれば、限定されるものではない。
A nut as a fixing member 30 a is fixed to the head of the anchor bolt 30. The anchor bolt 30 has a fixing length necessary for restraining the head portion 11 (the leg portion 12) of the column 10 by the reinforcing member 20 by forming the fixing member 30a on the head portion. The configuration of the fixing member 30a is not limited as long as the fixing force of the anchor bolt 30 can be increased.
本実施形態に係るアンカーボルト３０は、図２（ｂ）に示すように、翼部２２，２３の翼長ｚよりも長く、頭部の定着部材３０ａ（先端）が、柱１０の幅Ｄの中間よりも後面１７側となるように、配置されている。そして、アンカーボルト３０と締付ボルト３２とが交差している。ここでアンカーボルト３０の長さは限定されるものではないが、せん断破壊に対する耐力を増強させる観点からすれば、柱１０の前後の幅Ｄの１／２よりも長いのが望ましい。
As shown in FIG. 2B, the anchor bolt 30 according to the present embodiment is longer than the wing length z of the wing portions 22 and 23, and the fixing member 30a (tip) of the head has a width D of the column 10. It arrange | positions so that it may become the rear surface 17 side rather than the middle. The anchor bolt 30 and the fastening bolt 32 intersect each other. Here, the length of the anchor bolt 30 is not limited, but is preferably longer than ½ of the width D before and after the column 10 from the viewpoint of enhancing the resistance to shear fracture.
補強部材２０は、アンカーボルト３０を介して柱１０の前面に固定されるとともに、貫通孔１８を挿通して、両端が柱１０の左右の側面１４，１５に突設された締付ボルト３２により、柱１０の側面１４，１５に固定されている。
The reinforcing member 20 is fixed to the front surface of the column 10 via an anchor bolt 30 and is inserted through the through-hole 18 and tightened bolts 32 having both ends protruding from the left and right side surfaces 14 and 15 of the column 10. , Fixed to the side surfaces 14 and 15 of the column 10.
締付ボルト３２は、鋼棒からなり、図２（ａ）に示すように、アンカーボルト３０と接触することがないように、アンカーボルト３０よりも低い位置に配置されている。なお、締付ボルト３２の本数や位置、締付ボルト３２を構成する材料等は、補強部材２０に所望の締付力を付与することが可能であれば、限定されるものではない。
The fastening bolt 32 is made of a steel rod, and is disposed at a position lower than the anchor bolt 30 so as not to contact the anchor bolt 30 as shown in FIG. Note that the number and position of the fastening bolts 32 and the material constituting the fastening bolts 32 are not limited as long as a desired fastening force can be applied to the reinforcing member 20.
補強部材２０は、図２（ｂ）および（ｃ）に示すように、アンカーボルト３０により、柱１０に締付固定されるとともに、柱１０と補強部材２０との間に形成された隙間にグラウト材等からなる充填材３１を充填することにより柱１０と一体に固定されている。また、充填材３１は、固定部材挿入孔１６の内壁面とアンカーボルト３０との間に形成された隙間および貫通孔１８の内壁面と締付ボルト３２との間に形成された隙間にも一体に充填されている。
As shown in FIGS. 2B and 2C, the reinforcing member 20 is fastened and fixed to the column 10 by anchor bolts 30 and is grouted in a gap formed between the column 10 and the reinforcing member 20. It is fixed integrally with the pillar 10 by filling a filler 31 made of a material or the like. The filler 31 is also integrated with a gap formed between the inner wall surface of the fixing member insertion hole 16 and the anchor bolt 30 and a gap formed between the inner wall surface of the through hole 18 and the fastening bolt 32. Is filled.
なお、補強部材２０を構成する鋼板の板厚は、柱１０の形状寸法や想定される地震時に作用する応力等に応じて適宜設定する。また、補強部材２０の形成は、平鋼板に折り曲げ加工を施すことによる形成や鋼板同士を接合することによる形成など、適宜公知の手段により行えばよい。
In addition, the plate | board thickness of the steel plate which comprises the reinforcement member 20 is suitably set according to the stress etc. which act at the shape dimension of the pillar 10, the assumed earthquake, etc. The reinforcing member 20 may be formed by a known means as appropriate, such as forming by bending a flat steel plate or forming the steel plates together.
柱補強構造１の施工は、下記の手順により行う。
まず、柱１０の前面１３から削孔を行うことにより柱１０に固定部材挿入孔１６，１６，１６を形成するとともに、柱１０の側面から削孔を行うことで貫通孔１８を形成する。次に、補強部材２０を所定の位置に配置するとともに、固定部材挿入孔１６，１６，１６および貫通孔１８にそれぞれアンカーボルト３０，３０，３０と締付ボルト３２を挿入する。 The column reinforcement structure 1 is constructed according to the following procedure.
First, the fixing member insertion holes 16, 16, 16 are formed in the column 10 by drilling from the front surface 13 of the column 10, and the through hole 18 is formed by drilling from the side surface of the column 10. Next, the reinforcing member 20 is disposed at a predetermined position, and the anchor bolts 30, 30, 30 and the tightening bolt 32 are inserted into the fixing member insertion holes 16, 16, 16 and the through hole 18, respectively.
まず、柱１０の前面１３から削孔を行うことにより柱１０に固定部材挿入孔１６，１６，１６を形成するとともに、柱１０の側面から削孔を行うことで貫通孔１８を形成する。次に、補強部材２０を所定の位置に配置するとともに、固定部材挿入孔１６，１６，１６および貫通孔１８にそれぞれアンカーボルト３０，３０，３０と締付ボルト３２を挿入する。 The column reinforcement structure 1 is constructed according to the following procedure.
First, the fixing member insertion holes 16, 16, 16 are formed in the column 10 by drilling from the front surface 13 of the column 10, and the through hole 18 is formed by drilling from the side surface of the column 10. Next, the reinforcing member 20 is disposed at a predetermined position, and the anchor bolts 30, 30, 30 and the tightening bolt 32 are inserted into the fixing member insertion holes 16, 16, 16 and the through hole 18, respectively.
次に、アンカーボルト３０，３０，３０と締付ボルト３２に補強部材２０を仮止め固定し、柱１０と補強部材２０の隙間と、固定部材挿入孔１６，１６，１６と、貫通孔１８に充填材３１を充填する。
そして、充填材３１が固化した後、アンカーボルト３０，３０，３０と締付ボルト３２により、補強部材２０を締め付ける。 Next, the reinforcing member 20 is temporarily fixed and fixed to the anchor bolts 30, 30, 30 and the fastening bolt 32, and the clearance between the column 10 and the reinforcing member 20, the fixing member insertion holes 16, 16, 16, and the through hole 18 are fixed. Filling material 31 is filled.
Then, after the filler 31 is solidified, the reinforcing member 20 is tightened by the anchor bolts 30, 30, 30 and the tightening bolt 32.
そして、充填材３１が固化した後、アンカーボルト３０，３０，３０と締付ボルト３２により、補強部材２０を締め付ける。 Next, the reinforcing member 20 is temporarily fixed and fixed to the anchor bolts 30, 30, 30 and the fastening bolt 32, and the clearance between the column 10 and the reinforcing member 20, the fixing member insertion holes 16, 16, 16, and the through hole 18 are fixed. Filling material 31 is filled.
Then, after the filler 31 is solidified, the reinforcing member 20 is tightened by the anchor bolts 30, 30, 30 and the tightening bolt 32.
なお、本実施形態では、アンカーボルト３０，３０，３０と締付ボルト３２に補強部材２０を仮止め固定してから充填材３１を充填するものとしたが、補強部材２０を配置する前に、固定部材挿入孔１６，１６，１６にアンカーボルト３０，３０，３０を挿入するとともに充填材３１を充填し、アンカーボルト３０，３０，３０を柱１０に固定してから、補強部材２０を配置してもよい。
In the present embodiment, the reinforcing member 20 is temporarily fixed to the anchor bolts 30, 30, 30 and the fastening bolt 32 and then the filler 31 is filled. However, before the reinforcing member 20 is arranged, The anchor bolts 30, 30, 30 are inserted into the fixing member insertion holes 16, 16, 16 and the filler 31 is filled, and the anchor bolts 30, 30, 30 are fixed to the pillar 10, and then the reinforcing member 20 is disposed. May be.
以上、本実施形態に係る柱補強構造１によれば、コの字状に形成された補強部材により、柱１０の頭部１１と脚部１２において、柱１０の前面１３、側面１４，１５を拘束するため、柱１０の端部のせん断破壊や、柱１０の付着割裂破壊（表面のコンクリートの剥落等）を防止し、柱１０のじん性を改善することを可能としている。
つまり、地震により大きな力が建物に作用すると、柱１０と梁Ｂとの接合部に大きな応力が発生し、この部分において柱１０に破損が生じる。これに対して、本実施形態に係る柱補強構造１は、大きな応力が作用する柱１０の頭部１１と脚部１２を補強部材２０により拘束するため、このような破損を防止することができる。 As described above, according to the column reinforcing structure 1 according to the present embodiment, the front surface 13 and the side surfaces 14 and 15 of the column 10 are formed at the head portion 11 and the leg portion 12 of the column 10 by the reinforcing member formed in a U shape. Since it restrains, the shear failure of the edge part of the pillar 10 and the adhesion split fracture of the pillar 10 (peeling off of concrete on the surface, etc.) can be prevented, and the toughness of the pillar 10 can be improved.
That is, when a large force acts on the building due to an earthquake, a large stress is generated at the joint between the column 10 and the beam B, and the column 10 is damaged at this portion. On the other hand, since the column reinforcement structure 1 according to the present embodiment restrains the head portion 11 and the leg portion 12 of the column 10 to which a large stress acts by the reinforcement member 20, it is possible to prevent such damage. .
つまり、地震により大きな力が建物に作用すると、柱１０と梁Ｂとの接合部に大きな応力が発生し、この部分において柱１０に破損が生じる。これに対して、本実施形態に係る柱補強構造１は、大きな応力が作用する柱１０の頭部１１と脚部１２を補強部材２０により拘束するため、このような破損を防止することができる。 As described above, according to the column reinforcing structure 1 according to the present embodiment, the front surface 13 and the side surfaces 14 and 15 of the column 10 are formed at the head portion 11 and the leg portion 12 of the column 10 by the reinforcing member formed in a U shape. Since it restrains, the shear failure of the edge part of the pillar 10 and the adhesion split fracture of the pillar 10 (peeling off of concrete on the surface, etc.) can be prevented, and the toughness of the pillar 10 can be improved.
That is, when a large force acts on the building due to an earthquake, a large stress is generated at the joint between the column 10 and the beam B, and the column 10 is damaged at this portion. On the other hand, since the column reinforcement structure 1 according to the present embodiment restrains the head portion 11 and the leg portion 12 of the column 10 to which a large stress acts by the reinforcement member 20, it is possible to prevent such damage. .
また、柱補強構造１は、補強部材２０を柱１０に締付固定するとともに充填材３１を充填するのみで完了するため、簡易かつ早期に施工を行うことが可能である。
また、柱補強構造１は、壁Ｗと一体に形成された柱１０について、壁Ｗに加工を加えることなく、前面１３と側面１４，１５との２方向から拘束することを可能としているため、作業性に優れているとともに、建物が有する既存の耐力を維持したまま、補強を行うことを可能としている。 Moreover, since the column reinforcement structure 1 is completed only by tightening and fixing the reinforcing member 20 to the column 10 and filling the filler 31, the column reinforcement structure 1 can be easily and quickly constructed.
In addition, the column reinforcing structure 1 enables the column 10 formed integrally with the wall W to be restrained from two directions of the front surface 13 and the side surfaces 14 and 15 without processing the wall W. It is excellent in workability and can be reinforced while maintaining the existing strength of the building.
また、柱補強構造１は、壁Ｗと一体に形成された柱１０について、壁Ｗに加工を加えることなく、前面１３と側面１４，１５との２方向から拘束することを可能としているため、作業性に優れているとともに、建物が有する既存の耐力を維持したまま、補強を行うことを可能としている。 Moreover, since the column reinforcement structure 1 is completed only by tightening and fixing the reinforcing member 20 to the column 10 and filling the filler 31, the column reinforcement structure 1 can be easily and quickly constructed.
In addition, the column reinforcing structure 1 enables the column 10 formed integrally with the wall W to be restrained from two directions of the front surface 13 and the side surfaces 14 and 15 without processing the wall W. It is excellent in workability and can be reinforced while maintaining the existing strength of the building.
また、補強部材２０は、柱１０の形状に応じて形成されており、また、頭部１１と脚部１２のみに配設されるため、既存の居住空間に与える影響が少ない。
また、補強部材２０は、柱１０の頭部１１および脚部１２のみに配設されるように、小型に形成されているため、取り扱いが容易で、柱補強構造１を構成するための施工性に優れているとともに安価である。 Moreover, since the reinforcement member 20 is formed according to the shape of the pillar 10 and is disposed only in the head portion 11 and the leg portion 12, there is little influence on the existing living space.
In addition, the reinforcing member 20 is formed in a small size so as to be disposed only on the head portion 11 and the leg portion 12 of the column 10, so that it is easy to handle and workability for configuring the column reinforcing structure 1. It is excellent and inexpensive.
また、補強部材２０は、柱１０の頭部１１および脚部１２のみに配設されるように、小型に形成されているため、取り扱いが容易で、柱補強構造１を構成するための施工性に優れているとともに安価である。 Moreover, since the reinforcement member 20 is formed according to the shape of the pillar 10 and is disposed only in the head portion 11 and the leg portion 12, there is little influence on the existing living space.
In addition, the reinforcing member 20 is formed in a small size so as to be disposed only on the head portion 11 and the leg portion 12 of the column 10, so that it is easy to handle and workability for configuring the column reinforcing structure 1. It is excellent and inexpensive.
また、補強部材２０の本体部２１には、柱１０の側面に当接するように形成されたリブ２５，２６を備えているため、アンカーボルト３０による締付力を直接柱１０に伝達することが可能となり、柱１０の拘束力を高めることが可能となる。
また、アンカーボルト３０のみでは、アンカーボルト３０の周囲のみで柱１０を拘束することになるが、リブ２５，２６を介して力を伝達することで、拘束範囲を広げることが可能となる。 In addition, since the main body portion 21 of the reinforcing member 20 includes ribs 25 and 26 formed so as to contact the side surface of the column 10, the tightening force by the anchor bolt 30 can be directly transmitted to the column 10. This makes it possible to increase the restraining force of the column 10.
Further, with the anchor bolt 30 alone, the column 10 is constrained only around the anchor bolt 30, but by transmitting force through the ribs 25 and 26, the constraining range can be expanded.
また、アンカーボルト３０のみでは、アンカーボルト３０の周囲のみで柱１０を拘束することになるが、リブ２５，２６を介して力を伝達することで、拘束範囲を広げることが可能となる。 In addition, since the main body portion 21 of the reinforcing member 20 includes ribs 25 and 26 formed so as to contact the side surface of the column 10, the tightening force by the anchor bolt 30 can be directly transmitted to the column 10. This makes it possible to increase the restraining force of the column 10.
Further, with the anchor bolt 30 alone, the column 10 is constrained only around the anchor bolt 30, but by transmitting force through the ribs 25 and 26, the constraining range can be expanded.
また、リブ２５，２６は、本体部２１と翼部２２，２３との角部において、本体部２１と翼部２２，２３との両方に固定されているため、翼部２２，２３が開いて柱１０との隙間が広がることを防止する。
また、下段のリブ２６は、柱１０と補強部材２０との隙間に充填材３１を充填する際の型枠としても機能するため、型枠の設置作業を一部省略することが可能となり、作業性に優れている。なお、リブ２５，２５，…は互いに間隔を空けて配置されているため、柱１０と補強部材２０との隙間への充填材３１の充填の妨げとなることはない。 Further, since the ribs 25 and 26 are fixed to both the main body 21 and the wings 22 and 23 at the corners of the main body 21 and the wings 22 and 23, the wings 22 and 23 are opened. The gap with the pillar 10 is prevented from spreading.
Further, the lower rib 26 also functions as a mold for filling the gap 31 between the column 10 and the reinforcing member 20 with the filler 31, so that part of the work for installing the mold can be omitted. Excellent in properties. The ribs 25, 25,... Are spaced apart from each other, and therefore do not hinder the filling of the filler 31 into the gap between the column 10 and the reinforcing member 20.
また、下段のリブ２６は、柱１０と補強部材２０との隙間に充填材３１を充填する際の型枠としても機能するため、型枠の設置作業を一部省略することが可能となり、作業性に優れている。なお、リブ２５，２５，…は互いに間隔を空けて配置されているため、柱１０と補強部材２０との隙間への充填材３１の充填の妨げとなることはない。 Further, since the ribs 25 and 26 are fixed to both the main body 21 and the wings 22 and 23 at the corners of the main body 21 and the wings 22 and 23, the wings 22 and 23 are opened. The gap with the pillar 10 is prevented from spreading.
Further, the lower rib 26 also functions as a mold for filling the gap 31 between the column 10 and the reinforcing member 20 with the filler 31, so that part of the work for installing the mold can be omitted. Excellent in properties. The ribs 25, 25,... Are spaced apart from each other, and therefore do not hinder the filling of the filler 31 into the gap between the column 10 and the reinforcing member 20.
また、充填材３１を、補強部材２０と柱１０との隙間と固定部材挿入孔１６と貫通孔１８とに一体に充填することで、より強固に補強部材２０を固定することが可能となった。
In addition, by filling the filler 31 into the gap between the reinforcing member 20 and the column 10, the fixing member insertion hole 16, and the through hole 18, the reinforcing member 20 can be fixed more firmly. .
また、アンカーボルト３０の配置位置を、柱１０と梁Ｂとの角部から柱せいの１／３以内の高さｈとすることで、アンカーボルト３０を、柱１０の頭部１１または脚部１２に生じる破壊に対応する補強筋として機能させることが可能となる。
つまり、地震時等に柱１０の頭部１１または脚部１２には、柱１０と梁Ｂとの角部から、約４５°の角度で亀裂が生じる場合が多い。そのため、この角部から柱せいの１／３以内の高さｈにアンカーボルト３０を配置すれば、このような亀裂の発生を防止するのに効果的である。 Further, the anchor bolt 30 is disposed at a height h within 1/3 of the column from the corner between the column 10 and the beam B, so that the anchor bolt 30 is connected to the head portion 11 or the leg portion of the column 10. 12 can be made to function as a reinforcing bar corresponding to the breakage that occurs in 12.
In other words, the head 11 or the leg 12 of the column 10 is often cracked at an angle of about 45 ° from the corner of the column 10 and the beam B during an earthquake or the like. Therefore, if the anchor bolt 30 is arranged at a height h within 1/3 of the column from this corner, it is effective to prevent the occurrence of such cracks.
つまり、地震時等に柱１０の頭部１１または脚部１２には、柱１０と梁Ｂとの角部から、約４５°の角度で亀裂が生じる場合が多い。そのため、この角部から柱せいの１／３以内の高さｈにアンカーボルト３０を配置すれば、このような亀裂の発生を防止するのに効果的である。 Further, the anchor bolt 30 is disposed at a height h within 1/3 of the column from the corner between the column 10 and the beam B, so that the anchor bolt 30 is connected to the head portion 11 or the leg portion of the column 10. 12 can be made to function as a reinforcing bar corresponding to the breakage that occurs in 12.
In other words, the head 11 or the leg 12 of the column 10 is often cracked at an angle of about 45 ° from the corner of the column 10 and the beam B during an earthquake or the like. Therefore, if the anchor bolt 30 is arranged at a height h within 1/3 of the column from this corner, it is effective to prevent the occurrence of such cracks.
また、補強部材２０により柱１０の頭部１１および脚部１２を拘束する範囲が、柱せいの１／２以上、好ましくは１／２〜１の範囲であるため、柱１０と梁Ｂとの角部から約４５°の角度で生じる亀裂の発生を防止するのに効果的である。
さらに、補強部材２０が、アンカーボルト３０，３０，３０に加えて、締付ボルト３２により締付固定されているため、柱１０の前面１３および側面１４，１５をより効果的に拘束する。 Moreover, since the range which restrains the head 11 and the leg part 12 of the pillar 10 with the reinforcement member 20 is more than 1/2 of the pillar, Preferably it is the range of 1 / 2-1. It is effective in preventing the occurrence of cracks occurring at an angle of about 45 ° from the corner.
Furthermore, since the reinforcing member 20 is fastened and fixed by the fastening bolt 32 in addition to the anchor bolts 30, 30, 30, the front surface 13 and the side surfaces 14, 15 of the column 10 are more effectively restrained.
さらに、補強部材２０が、アンカーボルト３０，３０，３０に加えて、締付ボルト３２により締付固定されているため、柱１０の前面１３および側面１４，１５をより効果的に拘束する。 Moreover, since the range which restrains the head 11 and the leg part 12 of the pillar 10 with the reinforcement member 20 is more than 1/2 of the pillar, Preferably it is the range of 1 / 2-1. It is effective in preventing the occurrence of cracks occurring at an angle of about 45 ° from the corner.
Furthermore, since the reinforcing member 20 is fastened and fixed by the fastening bolt 32 in addition to the anchor bolts 30, 30, 30, the front surface 13 and the side surfaces 14, 15 of the column 10 are more effectively restrained.
＜第２の実施の形態＞
次に、図４を参照して、第２の実施の形態に係る柱補強構造２について説明する。
ここで、図４は、第２の実施の形態にかかる柱補強構造の概略を示す図であって、（ａ）は斜視図、（ｂ）は断面図、（ｃ）補強部材の分解斜視図である。なお、柱補強構造２は、柱１０の頭部１１および脚部１２について同様に補強を行っているため、図４（ａ）では、頭部１１のみを表示するものとする。 <Second Embodiment>
Next, with reference to FIG. 4, the column reinforcement structure 2 which concerns on 2nd Embodiment is demonstrated.
Here, FIG. 4 is a diagram showing an outline of the column reinforcing structure according to the second embodiment, where (a) is a perspective view, (b) is a cross-sectional view, and (c) an exploded perspective view of a reinforcing member. It is. In addition, since the column reinforcement structure 2 is reinforcing similarly about the head part 11 and the leg part 12 of the pillar 10, only the head part 11 shall be displayed in Fig.4 (a).
次に、図４を参照して、第２の実施の形態に係る柱補強構造２について説明する。
ここで、図４は、第２の実施の形態にかかる柱補強構造の概略を示す図であって、（ａ）は斜視図、（ｂ）は断面図、（ｃ）補強部材の分解斜視図である。なお、柱補強構造２は、柱１０の頭部１１および脚部１２について同様に補強を行っているため、図４（ａ）では、頭部１１のみを表示するものとする。 <Second Embodiment>
Next, with reference to FIG. 4, the column reinforcement structure 2 which concerns on 2nd Embodiment is demonstrated.
Here, FIG. 4 is a diagram showing an outline of the column reinforcing structure according to the second embodiment, where (a) is a perspective view, (b) is a cross-sectional view, and (c) an exploded perspective view of a reinforcing member. It is. In addition, since the column reinforcement structure 2 is reinforcing similarly about the head part 11 and the leg part 12 of the pillar 10, only the head part 11 shall be displayed in Fig.4 (a).
第２の実施の形態に係る柱補強構造２は、図４（ａ）に示すように、補強部材２０’が、断面Ｌ字状に形成された鋼板（第一部材２０ａおよび第二部材２０ｂ）を２枚組み合わせることにより断面コの字状に構成されている点で、断面コの字状の鋼板からなる補強部材２０を使用する第１の実施の形態の柱補強構造１と異なっている。
As shown in FIG. 4A, the column reinforcing structure 2 according to the second embodiment is a steel plate (first member 20a and second member 20b) in which a reinforcing member 20 ′ is formed in an L-shaped cross section. This is different from the column reinforcing structure 1 of the first embodiment in which the reinforcing member 20 made of a steel plate having a U-shaped cross section is used in that the two are combined in a U-shaped cross section.
補強部材２０’を構成する第一部材２０ａおよび第二部材２０ｂは、それぞれ一片２１ａ，２１ｂが前面１３、他片２２ａ，２２ｂが側面１４または側面１５に配置されるように形成された断面Ｌ字状の鋼板である。
一片２１ａ，２１ｂには、それぞれ、柱１０に形成された固定部材挿入孔１６に対応する位置にボルト孔２４，２４ａ，２４ｂ，２４が形成されている。 The first member 20a and the second member 20b constituting the reinforcing member 20 ′ are L-shaped in cross section formed such that one piece 21a, 21b is disposed on the front surface 13 and the other piece 22a, 22b is disposed on the side surface 14 or the side surface 15, respectively. Shaped steel plate.
Bolt holes 24, 24a, 24b, and 24 are formed in the pieces 21a and 21b at positions corresponding to the fixing member insertion holes 16 formed in the pillar 10, respectively.
一片２１ａ，２１ｂには、それぞれ、柱１０に形成された固定部材挿入孔１６に対応する位置にボルト孔２４，２４ａ，２４ｂ，２４が形成されている。 The first member 20a and the second member 20b constituting the reinforcing member 20 ′ are L-shaped in cross section formed such that one piece 21a, 21b is disposed on the front surface 13 and the other piece 22a, 22b is disposed on the side surface 14 or the side surface 15, respectively. Shaped steel plate.
Bolt holes 24, 24a, 24b, and 24 are formed in the pieces 21a and 21b at positions corresponding to the fixing member insertion holes 16 formed in the pillar 10, respectively.
第一部材２０ａおよび第二部材２０ｂは、図４（ａ）および（ｂ）に示すように、他片２２ａ，２２ｂをそれぞれ柱１０の側面１４，１５に係止した状態で、一片２１ａ，２１ｂ同士を柱１０の前面１３において重ね合わせた状態で配置されている。このとき、一片２１ａ，２１ｂにそれぞれ形成されたボルト孔２４ａ，２４ｂは、中央に配設されたアンカーボルト３０が挿通可能となるように、重ね合わされている。
As shown in FIGS. 4A and 4B, the first member 20a and the second member 20b are formed as one piece 21a, 21b with the other pieces 22a, 22b locked to the side surfaces 14, 15 of the column 10, respectively. They are arranged in a state where they are superposed on the front surface 13 of the pillar 10. At this time, the bolt holes 24a and 24b formed in the pieces 21a and 21b are overlapped so that the anchor bolt 30 disposed in the center can be inserted.
そして、重ね合わされた一片２１ａ，２１ｂ同士が、溶接Ａにより互いに接合されている。
なお、第一部材２０ａと第二部材２０ｂの溶接は、柱１０に配置した状態で行ってもよいし、配置する前に溶接を行い、補強部材２０’としてコの字を呈した状態で柱１０に配置してもよい。また、第一部材２０ａと第二部材２０ｂは、必ずしも接合されていなくてもよい。 The superposed pieces 21 a and 21 b are joined to each other by welding A.
In addition, welding of the first member 20a and the second member 20b may be performed in a state where the first member 20a and the second member 20b are disposed, or the column is performed in a state where a U-shape is provided as the reinforcing member 20 ′ by performing welding before the disposition. 10 may be arranged. Moreover, the 1st member 20a and the 2nd member 20b do not necessarily need to be joined.
なお、第一部材２０ａと第二部材２０ｂの溶接は、柱１０に配置した状態で行ってもよいし、配置する前に溶接を行い、補強部材２０’としてコの字を呈した状態で柱１０に配置してもよい。また、第一部材２０ａと第二部材２０ｂは、必ずしも接合されていなくてもよい。 The superposed pieces 21 a and 21 b are joined to each other by welding A.
In addition, welding of the first member 20a and the second member 20b may be performed in a state where the first member 20a and the second member 20b are disposed, or the column is performed in a state where a U-shape is provided as the reinforcing member 20 ′ by performing welding before the disposition. 10 may be arranged. Moreover, the 1st member 20a and the 2nd member 20b do not necessarily need to be joined.
第一部材２０ａおよび第二部材２０ｂには、図４（ｃ）に示すように、それぞれ一片２１ａ，２１ｂの柱１０側の面のボルト孔２４，２４ｂ，２４に対応する位置に、補剛プレート２８，２８，２８が配設されている。なお、本実施形態では、第一部材２０ａにはボルト孔２４に対応する箇所に、第二部材２０ｂにはボルト孔２４およびボルト孔２４ｂに対応する箇所に、それぞれ１ずつ配設されている。
As shown in FIG. 4C, the first member 20a and the second member 20b are provided with stiffening plates at positions corresponding to the bolt holes 24, 24b, 24 on the pillar 10 side surfaces of the pieces 21a, 21b, respectively. 28, 28, 28 are arranged. In the present embodiment, the first member 20a is disposed at a position corresponding to the bolt hole 24, and the second member 20b is disposed at a position corresponding to the bolt hole 24 and the bolt hole 24b.
補剛プレート２８は、図４（ｂ）および（ｃ）に示すように、柱１０の前面１３と補強部材２０’との間に形成された隙間に対応する厚みからなる矩形状の鋼板であって、一片２１ａ，２１ｂに溶接接合されることにより構成されている。この補剛プレート２８の中央には第一部材２０ａおよび第二部材２０ｂに形成されたボルト孔２４と同じ内径のボルト孔が形成されている。
補強部材２０’は、図４（ｂ）に示すように、補剛プレート２８，２８，２８が、柱１０の前面１３に当接した状態で配設される。 As shown in FIGS. 4B and 4C, the stiffening plate 28 is a rectangular steel plate having a thickness corresponding to a gap formed between the front surface 13 of the column 10 and the reinforcing member 20 ′. And it is comprised by welding joining to the piece 21a, 21b. In the center of the stiffening plate 28, a bolt hole having the same inner diameter as the bolt hole 24 formed in the first member 20a and the second member 20b is formed.
As shown in FIG. 4B, the reinforcing member 20 ′ is disposed in a state where the stiffening plates 28, 28, 28 are in contact with the front surface 13 of the column 10.
補強部材２０’は、図４（ｂ）に示すように、補剛プレート２８，２８，２８が、柱１０の前面１３に当接した状態で配設される。 As shown in FIGS. 4B and 4C, the stiffening plate 28 is a rectangular steel plate having a thickness corresponding to a gap formed between the front surface 13 of the column 10 and the reinforcing member 20 ′. And it is comprised by welding joining to the piece 21a, 21b. In the center of the stiffening plate 28, a bolt hole having the same inner diameter as the bolt hole 24 formed in the first member 20a and the second member 20b is formed.
As shown in FIG. 4B, the reinforcing member 20 ′ is disposed in a state where the stiffening plates 28, 28, 28 are in contact with the front surface 13 of the column 10.
その他、第２の実施の形態に係る柱補強構造２の構成は、第１の実施の形態の柱補強構造１と同様なため、詳細な説明は省略する。なお、第２の実施形態では、締付ボルトを配設しないものとしたが、必要に応じて締付ボルトを配設してもよい。
In addition, since the structure of the column reinforcement structure 2 which concerns on 2nd Embodiment is the same as that of the column reinforcement structure 1 of 1st Embodiment, detailed description is abbreviate | omitted. In the second embodiment, the tightening bolt is not disposed. However, the tightening bolt may be disposed as necessary.
柱補強構造２の施工は、下記の手順により行う。
まず、柱１０の前面１３から削孔することにより、柱１０に固定部材挿入孔１６，１６，１６を形成する。次に、固定部材挿入孔１６，１６，１６にアンカーボルト３０，３０，３０を挿入するとともに、固定部材挿入孔１６，１６，１６に充填材３１を充填する。なお、固定部材挿入孔１６，１６，１６への充填材３１の充填は、アンカーボルト３０，３０，３０を挿入する前に行ってもよいし、挿入した後に行ってもよい。 The column reinforcement structure 2 is constructed according to the following procedure.
First, the fixing member insertion holes 16, 16, 16 are formed in the pillar 10 by drilling holes from the front surface 13 of the pillar 10. Next, the anchor bolts 30, 30, 30 are inserted into the fixing member insertion holes 16, 16, 16, and the filler 31 is filled into the fixing member insertion holes 16, 16, 16. The filling material 31 may be filled into the fixing member insertion holes 16, 16, 16 before or after the anchor bolts 30, 30, 30 are inserted.
まず、柱１０の前面１３から削孔することにより、柱１０に固定部材挿入孔１６，１６，１６を形成する。次に、固定部材挿入孔１６，１６，１６にアンカーボルト３０，３０，３０を挿入するとともに、固定部材挿入孔１６，１６，１６に充填材３１を充填する。なお、固定部材挿入孔１６，１６，１６への充填材３１の充填は、アンカーボルト３０，３０，３０を挿入する前に行ってもよいし、挿入した後に行ってもよい。 The column reinforcement structure 2 is constructed according to the following procedure.
First, the fixing member insertion holes 16, 16, 16 are formed in the pillar 10 by drilling holes from the front surface 13 of the pillar 10. Next, the anchor bolts 30, 30, 30 are inserted into the fixing member insertion holes 16, 16, 16, and the filler 31 is filled into the fixing member insertion holes 16, 16, 16. The filling material 31 may be filled into the fixing member insertion holes 16, 16, 16 before or after the anchor bolts 30, 30, 30 are inserted.
固定部材挿入孔１６に充填された充填材３１が固化したら、アンカーボルト３０，３０，３０に補強部材２０’を仮止め固定する。そして、柱１０と補強部材２０の隙間に充填材３１を充填し、充填材３１が固化して十分な強度を発現した後、アンカーボルト３０，３０，３０を介して、補強部材２０’を締め付ける。
なお、充填材３１を充填する前に、補強部材２０’を固定してもよい。 When the filler 31 filled in the fixing member insertion hole 16 is solidified, the reinforcing member 20 ′ is temporarily fixed to the anchor bolts 30, 30, 30. Then, the filler 31 is filled in the gap between the column 10 and the reinforcing member 20, and after the filler 31 is solidified and exhibits sufficient strength, the reinforcing member 20 ′ is tightened via the anchor bolts 30, 30, 30. .
Note that the reinforcing member 20 ′ may be fixed before the filling material 31 is filled.
なお、充填材３１を充填する前に、補強部材２０’を固定してもよい。 When the filler 31 filled in the fixing member insertion hole 16 is solidified, the reinforcing member 20 ′ is temporarily fixed to the anchor bolts 30, 30, 30. Then, the filler 31 is filled in the gap between the column 10 and the reinforcing member 20, and after the filler 31 is solidified and exhibits sufficient strength, the reinforcing member 20 ′ is tightened via the anchor bolts 30, 30, 30. .
Note that the reinforcing member 20 ′ may be fixed before the filling material 31 is filled.
以上、柱補強構造２によれば、補強部材２０’が、第一部材２０ａと第二部材２０ｂとに分割されているため、取り扱いが容易である。したがって、施工を容易に行うことが可能となる。
As described above, according to the column reinforcing structure 2, since the reinforcing member 20 'is divided into the first member 20a and the second member 20b, handling is easy. Therefore, construction can be easily performed.
この他、第２の実施の形態に係る柱補強構造２の作用効果は、第１の実施の形態の柱補強構造１と同様なため、詳細な説明は省略する。
In addition, since the effect of the column reinforcement structure 2 according to the second embodiment is the same as that of the column reinforcement structure 1 of the first embodiment, detailed description thereof is omitted.
＜第３の実施の形態＞
次に、図５を参照して、第３の実施の形態に係る柱補強構造３について説明する。
ここで、図５は、第３の実施の形態にかかる柱補強構造の概略を示す図であって、（ａ）は斜視図、（ｂ）は断面図、（ｃ）は補強部材の斜視図である。なお、柱補強構造３は、柱１０の頭部１１および脚部１２について同様に補強を行っているため、図５（ａ）では、頭部１１のみを表示するものとする。 <Third Embodiment>
Next, a column reinforcing structure 3 according to a third embodiment will be described with reference to FIG.
Here, FIG. 5 is a diagram showing an outline of the column reinforcing structure according to the third embodiment, wherein (a) is a perspective view, (b) is a sectional view, and (c) is a perspective view of a reinforcing member. It is. In addition, since the column reinforcement structure 3 is reinforcing similarly about the head 11 and the leg part 12 of the pillar 10, only the head 11 is displayed in Fig.5 (a).
次に、図５を参照して、第３の実施の形態に係る柱補強構造３について説明する。
ここで、図５は、第３の実施の形態にかかる柱補強構造の概略を示す図であって、（ａ）は斜視図、（ｂ）は断面図、（ｃ）は補強部材の斜視図である。なお、柱補強構造３は、柱１０の頭部１１および脚部１２について同様に補強を行っているため、図５（ａ）では、頭部１１のみを表示するものとする。 <Third Embodiment>
Next, a column reinforcing structure 3 according to a third embodiment will be described with reference to FIG.
Here, FIG. 5 is a diagram showing an outline of the column reinforcing structure according to the third embodiment, wherein (a) is a perspective view, (b) is a sectional view, and (c) is a perspective view of a reinforcing member. It is. In addition, since the column reinforcement structure 3 is reinforcing similarly about the head 11 and the leg part 12 of the pillar 10, only the head 11 is displayed in Fig.5 (a).
第３の実施の形態に係る柱補強構造３は、図５（ａ）に示すように、補強部材２０が、柱１０の後面１７から前面１３を貫通して配設された貫通ボルト（第一の固定部材）３３，３３，３３により締付固定されている点で、第１の実施の形態に係る柱補強構造１と異なっている。
As shown in FIG. 5A, the column reinforcing structure 3 according to the third embodiment includes a through bolt (first member) in which the reinforcing member 20 is disposed to penetrate the front surface 13 from the rear surface 17 of the column 10. This is different from the column reinforcing structure 1 according to the first embodiment in that it is fastened and fixed by 33, 33, 33.
図５（ｂ）に示すように、柱補強構造３では、柱１０を前後方向で貫通する貫通孔（固定部材挿入孔）１９が形成されており、貫通ボルト３３は、柱１０を前後方向に貫通して形成された貫通孔１９に挿通されている。貫通孔１９の形状は限定されるものではなく、適宜設定することが可能である。また、第３の実施の形態では貫通ボルト３３を上下２段に２本ずつ計４本配設するものとしたが、その本数や配置は限定されるものではない。
As shown in FIG. 5B, in the column reinforcing structure 3, a through hole (fixing member insertion hole) 19 that penetrates the column 10 in the front-rear direction is formed, and the through bolt 33 extends the column 10 in the front-rear direction. It is inserted through a through hole 19 formed so as to penetrate therethrough. The shape of the through hole 19 is not limited and can be set as appropriate. In the third embodiment, a total of four through bolts 33 are arranged in two upper and lower two stages, but the number and arrangement are not limited.
柱１０の後面１７には補強板３４が配設されており、貫通ボルト３３は、補強部材２０と補強板３４の外面に係止された状態で配置されている。
また、貫通孔１９と貫通ボルト３３との間に形成された隙間には、柱１０と補強部材２０との隙間と一体に充填材３１が充填されている。 A reinforcing plate 34 is disposed on the rear surface 17 of the column 10, and the through bolt 33 is disposed in a state of being locked to the outer surface of the reinforcing member 20 and the reinforcing plate 34.
A gap formed between the through hole 19 and the through bolt 33 is filled with a filler 31 integrally with the gap between the column 10 and the reinforcing member 20.
また、貫通孔１９と貫通ボルト３３との間に形成された隙間には、柱１０と補強部材２０との隙間と一体に充填材３１が充填されている。 A reinforcing plate 34 is disposed on the rear surface 17 of the column 10, and the through bolt 33 is disposed in a state of being locked to the outer surface of the reinforcing member 20 and the reinforcing plate 34.
A gap formed between the through hole 19 and the through bolt 33 is filled with a filler 31 integrally with the gap between the column 10 and the reinforcing member 20.
また、柱補強構造３では、上下の貫通ボルト３３，３３の上下方向の間に、貫通ボルト３３と接触することがないように、締付ボルト３２を配設するものとする。なお、締付ボルト３２の本数は限定されるものではなく、２本以上配設してもよい。
本実施形態では、上側の貫通ボルト３３を、柱１０と梁Ｂとの角部からの１／３以内の高さｈに位置するように配置する（図２（ａ）参照）。 In the column reinforcing structure 3, the fastening bolt 32 is disposed between the upper and lower through bolts 33, 33 so as not to contact the through bolt 33. In addition, the number of the fastening bolts 32 is not limited, and two or more bolts may be provided.
In the present embodiment, the upper penetrating bolt 33 is disposed so as to be positioned at a height h within 1/3 from the corner portion of the column 10 and the beam B (see FIG. 2A).
本実施形態では、上側の貫通ボルト３３を、柱１０と梁Ｂとの角部からの１／３以内の高さｈに位置するように配置する（図２（ａ）参照）。 In the column reinforcing structure 3, the fastening bolt 32 is disposed between the upper and lower through bolts 33, 33 so as not to contact the through bolt 33. In addition, the number of the fastening bolts 32 is not limited, and two or more bolts may be provided.
In the present embodiment, the upper penetrating bolt 33 is disposed so as to be positioned at a height h within 1/3 from the corner portion of the column 10 and the beam B (see FIG. 2A).
補強部材２０の本体部２１の背面（柱１０の前面に対応する部分）には、図５（ｂ）に示すように、それぞれ２枚のリブ（補剛材）２５，２５が２段（上段および中段）、計４枚設けられている。リブ２５は、鋼板を本体部２１に接合することにより形成されており、本体部２１と直交した状態で接合されている。また、各リブ２５は、各ボルト孔２４の上方に形成されている。
As shown in FIG. 5B, two ribs (stiffeners) 25 and 25 are provided on the back surface of the main body portion 21 of the reinforcing member 20 (the portion corresponding to the front surface of the column 10) (upper stage). 4) in total. The rib 25 is formed by bonding a steel plate to the main body portion 21 and is bonded in a state orthogonal to the main body portion 21. Each rib 25 is formed above each bolt hole 24.
また、各段のリブ２５，２５は、互いに隙間を空けて並設されている。
さらに、左右に配設されたリブ２５，２５は、それぞれ、本体部２１と翼部２２，２３との角部に配設されており、本体部２１および翼部２２，２３に一体に接合されている。
なお、リブ２５の接合方法は限定されるものではないが、本実施形態では溶接接合により行う。また、リブ２５の個数および段数は限定されるものではない。また、リブ２５，２５，…の配置も限定されるものではなく、千鳥状に配置されていてもよい。 Further, the ribs 25 and 25 of each step are arranged in parallel with a gap therebetween.
Further, the ribs 25, 25 disposed on the left and right are respectively disposed at the corners of the main body 21 and the wings 22, 23 and are integrally joined to the main body 21 and the wings 22, 23. ing.
In addition, although the joining method of the rib 25 is not limited, in this embodiment, it performs by welding joining. The number of ribs 25 and the number of steps are not limited. Further, the arrangement of the ribs 25, 25,... Is not limited, and the ribs 25, 25,.
さらに、左右に配設されたリブ２５，２５は、それぞれ、本体部２１と翼部２２，２３との角部に配設されており、本体部２１および翼部２２，２３に一体に接合されている。
なお、リブ２５の接合方法は限定されるものではないが、本実施形態では溶接接合により行う。また、リブ２５の個数および段数は限定されるものではない。また、リブ２５，２５，…の配置も限定されるものではなく、千鳥状に配置されていてもよい。 Further, the ribs 25 and 25 of each step are arranged in parallel with a gap therebetween.
Further, the ribs 25, 25 disposed on the left and right are respectively disposed at the corners of the main body 21 and the wings 22, 23 and are integrally joined to the main body 21 and the wings 22, 23. ing.
In addition, although the joining method of the rib 25 is not limited, in this embodiment, it performs by welding joining. The number of ribs 25 and the number of steps are not limited. Further, the arrangement of the ribs 25, 25,... Is not limited, and the ribs 25, 25,.
また、本体部２１には、本体部２１の背面の下端に沿って下段のリブ２６が形成されている。下段のリブ２６は、一枚の鋼板からなり、左右の翼部２２，２３間に横設されるように形成されている。そして、下段のリブ２６は、本体部２１および翼部２２，２３に一体に接合されている。なお、リブ２６の接合方法は限定されるものではないが、本実施形態では溶接接合により行う。
Further, a lower rib 26 is formed on the main body 21 along the lower end of the back surface of the main body 21. The lower rib 26 is made of a single steel plate, and is formed so as to be horizontally provided between the left and right wing portions 22 and 23. The lower rib 26 is integrally joined to the main body portion 21 and the wing portions 22 and 23. In addition, although the joining method of the rib 26 is not limited, in this embodiment, it performs by welding joining.
補強部材２０は、図５（ｂ）に示すように、リブ２５（２６）が、柱１０の前面１３に当接した状態で配設されている。
As shown in FIG. 5B, the reinforcing member 20 is disposed with the ribs 25 (26) in contact with the front surface 13 of the column 10.
この他、柱補強構造３の構成に関する事項は、第１の実施の形態に係る柱補強構造１の構成と同様なため、詳細な説明は省略する。
In addition, since the matters regarding the configuration of the column reinforcing structure 3 are the same as the configuration of the column reinforcing structure 1 according to the first embodiment, detailed description thereof is omitted.
柱補強構造３の施工は、下記の手順により行う。
まず、柱１０の前面１３から削孔することにより、柱１０に貫通孔１９，１９，…を形成するとともに、柱１０の側面１４（１５）から削孔を行うことで、貫通孔１８を形成する。次に、所定の位置に補強部材２０および補強板３４を配置するとともに、貫通孔１９，１９，…に貫通ボルト３３，３３，…を挿入し、貫通孔１８に締付ボルト３２を挿入する。 The column reinforcement structure 3 is constructed according to the following procedure.
First, through holes 19, 19,... Are formed in the pillar 10 by drilling from the front surface 13 of the pillar 10, and through holes 18 are formed by drilling from the side face 14 (15) of the pillar 10. To do. Next, the reinforcing member 20 and the reinforcing plate 34 are arranged at predetermined positions, the through bolts 33, 33,... Are inserted into the through holes 19, 19,.
まず、柱１０の前面１３から削孔することにより、柱１０に貫通孔１９，１９，…を形成するとともに、柱１０の側面１４（１５）から削孔を行うことで、貫通孔１８を形成する。次に、所定の位置に補強部材２０および補強板３４を配置するとともに、貫通孔１９，１９，…に貫通ボルト３３，３３，…を挿入し、貫通孔１８に締付ボルト３２を挿入する。 The column reinforcement structure 3 is constructed according to the following procedure.
First, through holes 19, 19,... Are formed in the pillar 10 by drilling from the front surface 13 of the pillar 10, and through holes 18 are formed by drilling from the side face 14 (15) of the pillar 10. To do. Next, the reinforcing member 20 and the reinforcing plate 34 are arranged at predetermined positions, the through bolts 33, 33,... Are inserted into the through holes 19, 19,.
次に、貫通ボルト３３，３３，…と締付ボルト３２に補強部材２０を仮止め固定し、柱１０と補強部材２０の隙間と、貫通孔１９，１９，…と、貫通孔１８に充填材３１を充填する。
そして、充填材３１が固化した後、貫通ボルト３３，３３，…と締付ボルト３２により、補強部材２０を締め付ける。 Next, the reinforcing member 20 is temporarily fixed to the through bolts 33, 33,... And the fastening bolt 32, and the gap between the column 10 and the reinforcing member 20, the through holes 19, 19,. 31 is filled.
Then, after the filler 31 is solidified, the reinforcing member 20 is tightened by the through bolts 33, 33,.
そして、充填材３１が固化した後、貫通ボルト３３，３３，…と締付ボルト３２により、補強部材２０を締め付ける。 Next, the reinforcing member 20 is temporarily fixed to the through bolts 33, 33,... And the fastening bolt 32, and the gap between the column 10 and the reinforcing member 20, the through holes 19, 19,. 31 is filled.
Then, after the filler 31 is solidified, the reinforcing member 20 is tightened by the through bolts 33, 33,.
なお、本実施形態では、貫通ボルト３３，３３，…と締付ボルト３２に補強部材２０を仮止め固定してから充填材３１を充填するものとしたが、補強部材２０を配置する前に、貫通孔１９，１９，…に充填材３１を充填し、貫通ボルト３３，３３，…を柱１０に固定してから、補強部材２０および補強板３４を配置してもよい。
In this embodiment, the reinforcing member 20 is temporarily fixed to the through bolts 33, 33,... And the fastening bolt 32, and then the filler 31 is filled, but before the reinforcing member 20 is disposed, The reinforcing member 20 and the reinforcing plate 34 may be disposed after filling the through holes 19, 19,... With the filler 31 and fixing the through bolts 33, 33,.
以上、第３の実施の形態に係る柱補強構造３によれば、貫通ボルト３３，３３，３３を締め付けることにより、柱１０の前面に配設された補強部材２０と柱１０の後面１７に配設された補強板３４を介して、前後方向で柱１０を拘束することが可能となる。そのため、頭部１１および脚部１２において柱１０の周囲を拘束することが可能となり、柱１０のじん性が向上する。
As described above, according to the column reinforcing structure 3 according to the third embodiment, the through bolts 33, 33, 33 are tightened to arrange the reinforcing member 20 disposed on the front surface of the column 10 and the rear surface 17 of the column 10. The pillar 10 can be restrained in the front-rear direction via the provided reinforcing plate 34. Therefore, it becomes possible to restrain the circumference | surroundings of the pillar 10 in the head 11 and the leg part 12, and the toughness of the pillar 10 improves.
また、貫通ボルト３３は、貫通孔１９内において、充填材３１により一体に固定されるため、せん断補強筋としての機能も発揮する。充填材３１は、柱１０と補強部材２０の隙間、貫通孔１６および貫通孔１９に一体に充填されるため、柱補強構造３が一体として、地震時に作用する応力に対して抵抗する構造を発揮する。
Further, since the through bolt 33 is integrally fixed by the filler 31 in the through hole 19, it also functions as a shear reinforcement. Since the filler 31 is integrally filled in the gap between the column 10 and the reinforcing member 20, the through hole 16 and the through hole 19, the column reinforcing structure 3 is integrated and exhibits a structure that resists stress acting during an earthquake. To do.
また、上側の貫通ボルト３３の配置位置を、柱１０と梁Ｂとの角部から柱せいの１／３以内の高さｈとすることで、貫通ボルト３３を、柱１０の頭部１１または脚部１２に生じるせん断破壊に対応するせん断補強筋として機能させることが可能となる。
つまり、地震時等に柱１０の頭部１１または脚部１２に生じるせん断破壊は、柱１０と梁Ｂとの角部から、約４５°の角度で亀裂が生じる場合が多い。そのため、この角部から柱せいの１／３以内の高さｈに貫通ボルト３３を配置すれば、このような亀裂の発生を防止するのに効果的である。ここで、貫通ボルト３３は、柱１０を貫通して配置されているため、柱１０の頭部１１または脚部１２に生じることが想定されるせん断破壊の亀裂を抑制するせん断補強鉄筋としての機能を奏する。 Further, by setting the upper through bolt 33 to be disposed at a height h within 1/3 of the column from the corner between the column 10 and the beam B, the through bolt 33 can be connected to the head 11 of the column 10 or It becomes possible to function as a shear reinforcing bar corresponding to the shear fracture occurring in the leg portion 12.
That is, the shear failure that occurs in the head 11 or the leg 12 of the column 10 during an earthquake or the like often causes a crack at an angle of about 45 ° from the corner of the column 10 and the beam B. Therefore, if the through bolt 33 is arranged at a height h within 1/3 of the column from this corner, it is effective to prevent the occurrence of such cracks. Here, since the penetration bolt 33 is disposed through the column 10, it functions as a shear reinforcement bar that suppresses the crack of shear fracture that is supposed to occur in the head portion 11 or the leg portion 12 of the column 10. Play.
つまり、地震時等に柱１０の頭部１１または脚部１２に生じるせん断破壊は、柱１０と梁Ｂとの角部から、約４５°の角度で亀裂が生じる場合が多い。そのため、この角部から柱せいの１／３以内の高さｈに貫通ボルト３３を配置すれば、このような亀裂の発生を防止するのに効果的である。ここで、貫通ボルト３３は、柱１０を貫通して配置されているため、柱１０の頭部１１または脚部１２に生じることが想定されるせん断破壊の亀裂を抑制するせん断補強鉄筋としての機能を奏する。 Further, by setting the upper through bolt 33 to be disposed at a height h within 1/3 of the column from the corner between the column 10 and the beam B, the through bolt 33 can be connected to the head 11 of the column 10 or It becomes possible to function as a shear reinforcing bar corresponding to the shear fracture occurring in the leg portion 12.
That is, the shear failure that occurs in the head 11 or the leg 12 of the column 10 during an earthquake or the like often causes a crack at an angle of about 45 ° from the corner of the column 10 and the beam B. Therefore, if the through bolt 33 is arranged at a height h within 1/3 of the column from this corner, it is effective to prevent the occurrence of such cracks. Here, since the penetration bolt 33 is disposed through the column 10, it functions as a shear reinforcement bar that suppresses the crack of shear fracture that is supposed to occur in the head portion 11 or the leg portion 12 of the column 10. Play.
この他、第３の実施の形態に係る柱補強構造３の作用効果は、第１の実施の形態の柱補強構造１と同様なため、詳細な説明は省略する。
In addition, since the effect of the column reinforcement structure 3 according to the third embodiment is the same as that of the column reinforcement structure 1 of the first embodiment, detailed description thereof is omitted.
以上、本発明について、好適な実施形態について説明したが、本発明は前記の実施形態に限られず、本発明の趣旨を逸脱しない範囲で適宜設計変更が可能である。
例えば、前記各実施形態では、柱の頭部および脚部の両方を補強部材により補強する場合について説明したが、頭部または脚部のいずれか一方のみを補強する構成としてもよい。 As mentioned above, although preferred embodiment was described about this invention, this invention is not limited to the said embodiment, A design change is possible suitably in the range which does not deviate from the meaning of this invention.
For example, in each of the above-described embodiments, the case where both the head portion and the leg portion of the column are reinforced by the reinforcing member has been described. However, only one of the head portion or the leg portion may be reinforced.
例えば、前記各実施形態では、柱の頭部および脚部の両方を補強部材により補強する場合について説明したが、頭部または脚部のいずれか一方のみを補強する構成としてもよい。 As mentioned above, although preferred embodiment was described about this invention, this invention is not limited to the said embodiment, A design change is possible suitably in the range which does not deviate from the meaning of this invention.
For example, in each of the above-described embodiments, the case where both the head portion and the leg portion of the column are reinforced by the reinforcing member has been described. However, only one of the head portion or the leg portion may be reinforced.
また、前記各実施形態では、補強部材を固定する第一の固定部材として、アンカーボルトまたは貫通ボルト等により締付固定するものとしたが、補強部材の固定方法は、柱を２方向（３面）から拘束することが可能であれば、ボルトによる締付固定に限定されるものではない。例えば、ＰＣ鋼棒による固定でもよい。
Further, in each of the above embodiments, the first fixing member for fixing the reinforcing member is fastened and fixed by an anchor bolt or a through bolt, but the reinforcing member is fixed in two directions (three faces). As long as it can be restrained from the above, it is not limited to fastening with bolts. For example, fixing with a PC steel rod may be used.
また、前記各実施形態では、いわゆる壁付きコンクリート柱を補強する場合について説明したが、本発明の補強構造は、壁が接続されていない柱にも適用可能である。
また、柱の前後方向の中央に壁が接続されている場合には、柱の前後にそれぞれ本発明の柱補強構造を構成してもよい。 Moreover, although each said embodiment demonstrated the case where a so-called concrete column with a wall was reinforced, the reinforcement structure of this invention is applicable also to the column to which the wall is not connected.
Moreover, when the wall is connected to the center of the front-back direction of a pillar, you may comprise the column reinforcement structure of this invention before and behind a pillar, respectively.
また、柱の前後方向の中央に壁が接続されている場合には、柱の前後にそれぞれ本発明の柱補強構造を構成してもよい。 Moreover, although each said embodiment demonstrated the case where a so-called concrete column with a wall was reinforced, the reinforcement structure of this invention is applicable also to the column to which the wall is not connected.
Moreover, when the wall is connected to the center of the front-back direction of a pillar, you may comprise the column reinforcement structure of this invention before and behind a pillar, respectively.
また、第一の固定部材を、柱と柱に接続する梁との角部から、柱せいの１／３以内の位置において固定するものとしたが、第一の固定部材の固定位置はこれに限定されるものではない。
また、第一の固定部材の数は限定されるものではなく、適宜設定することが可能である。なお、固定部材を複数利用して補強部材を固定する場合において、少なくとも最も梁に近い位置に配設された補強部材が、梁と柱との角部から柱せいの１／３以内の位置に配置されるのが好ましい。 In addition, the first fixing member is fixed at a position within 1/3 of the column from the corner of the column and the beam connected to the column. It is not limited.
Further, the number of the first fixing members is not limited and can be set as appropriate. When fixing a reinforcing member using a plurality of fixing members, the reinforcing member disposed at least at the position closest to the beam is positioned within 1/3 of the column from the corner between the beam and the column. Preferably it is arranged.
また、第一の固定部材の数は限定されるものではなく、適宜設定することが可能である。なお、固定部材を複数利用して補強部材を固定する場合において、少なくとも最も梁に近い位置に配設された補強部材が、梁と柱との角部から柱せいの１／３以内の位置に配置されるのが好ましい。 In addition, the first fixing member is fixed at a position within 1/3 of the column from the corner of the column and the beam connected to the column. It is not limited.
Further, the number of the first fixing members is not limited and can be set as appropriate. When fixing a reinforcing member using a plurality of fixing members, the reinforcing member disposed at least at the position closest to the beam is positioned within 1/3 of the column from the corner between the beam and the column. Preferably it is arranged.
また、前記各実施形態では、補強部材の本体部（柱の前面に対応する部分）に補剛材（リブ、補剛プレート等）を形成するものとしたが、補剛材は必要に応じて形成すればよく、省略することも可能である。また、必要に応じて補剛材を翼部（柱の側面に対応する部分）に形成してもよい。また、補剛材の形状は、限定されない。
前記各実施形態では、補強部材により柱の頭部および脚部を拘束する範囲が、柱と梁との角部から柱せいの１／２以上の範囲となるように構成したが、必ずしも角部から柱せいの１／２以上の範囲でなくてもよい。 Further, in each of the above embodiments, the stiffener (rib, stiffening plate, etc.) is formed on the main body of the reinforcing member (the part corresponding to the front surface of the column). It may be formed and may be omitted. Moreover, you may form a stiffener in the wing | blade part (part corresponding to the side surface of a pillar) as needed. Further, the shape of the stiffener is not limited.
In each of the above embodiments, the range in which the head and legs of the column are constrained by the reinforcing member is configured to be in the range of 1/2 or more of the column length from the corner of the column and the beam. It may not be in the range of more than 1/2 of the column.
前記各実施形態では、補強部材により柱の頭部および脚部を拘束する範囲が、柱と梁との角部から柱せいの１／２以上の範囲となるように構成したが、必ずしも角部から柱せいの１／２以上の範囲でなくてもよい。 Further, in each of the above embodiments, the stiffener (rib, stiffening plate, etc.) is formed on the main body of the reinforcing member (the part corresponding to the front surface of the column). It may be formed and may be omitted. Moreover, you may form a stiffener in the wing | blade part (part corresponding to the side surface of a pillar) as needed. Further, the shape of the stiffener is not limited.
In each of the above embodiments, the range in which the head and legs of the column are constrained by the reinforcing member is configured to be in the range of 1/2 or more of the column length from the corner of the column and the beam. It may not be in the range of more than 1/2 of the column.
また、第二の固定部材として、鋼棒（締付ボルト）の代わりに、アンカーボルトやＰＣ鋼棒等を利用して、補強部材を柱の側面に固定する構成としてもよい。
Moreover, it is good also as a structure which fixes a reinforcement member to the side surface of a pillar using an anchor bolt, a PC steel rod, etc. instead of a steel rod (clamping bolt) as a 2nd fixing member.
また、アンカーボルトの長さは限定されるものではなく、補強部材の柱への締付固定のみを目的とする場合は、所定の定着長が確保できる長さであればよい。
Further, the length of the anchor bolt is not limited, and when the purpose is only to fasten and fix the reinforcing member to the column, it may be a length that can secure a predetermined fixing length.
１，２，３ 柱補強構造
１０ 柱
１１ 頭部
１２ 脚部
１３ 前面
１４、１５ 側面
１６ 固定部材挿入孔
１９ 貫通孔
２０ 補強部材
２５ リブ（補剛材）
２８ 補剛プレート（補剛材）
３０ アンカーボルト（第一の固定部材）
３２ 締付ボルト（第二の固定部材）
３３ 貫通ボルト（第一の固定部材）
Ｂ 梁
Ｗ 壁 1, 2 and 3 Column reinforcement structure 10 Column 11 Head portion 12 Leg portion 13 Front surface 14, 15 Side surface 16 Fixing member insertion hole 19 Through hole 20 Reinforcement member 25 Rib (stiffening material)
28 Stiffening plate (stiffening material)
30 Anchor bolt (first fixing member)
32 Tightening bolt (second fixing member)
33 Through bolt (first fixing member)
B Beam W Wall
１０ 柱
１１ 頭部
１２ 脚部
１３ 前面
１４、１５ 側面
１６ 固定部材挿入孔
１９ 貫通孔
２０ 補強部材
２５ リブ（補剛材）
２８ 補剛プレート（補剛材）
３０ アンカーボルト（第一の固定部材）
３２ 締付ボルト（第二の固定部材）
３３ 貫通ボルト（第一の固定部材）
Ｂ 梁
Ｗ 壁 1, 2 and 3 Column reinforcement structure 10 Column 11 Head portion 12 Leg portion 13 Front surface 14, 15 Side surface 16 Fixing member insertion hole 19 Through hole 20 Reinforcement member 25 Rib (stiffening material)
28 Stiffening plate (stiffening material)
30 Anchor bolt (first fixing member)
32 Tightening bolt (second fixing member)
33 Through bolt (first fixing member)
B Beam W Wall
Claims (3)
- 柱の頭部と脚部において前記柱の前面および左右の側面を拘束する柱補強構造であって、
前記柱の前面および左右の側面に沿設された断面コの字状の補強部材と、
前記柱に形成された固定部材挿入孔に配設されて、前記補強部材を前記柱の前面に締め付ける第一の固定部材と、
前記補強部材と前記柱との隙間および前記固定部材挿入孔と前記第一の固定部材との隙間に充填される充填材と、
前記柱の左右の側面に突設されて、前記補強部材を前記柱の側面に締め付ける第二の固定部材と、を備え、
前記第一の固定部材は、前記柱と該柱に接続する梁との角部から柱せいの１／３以内の高さの位置にて先端が前記柱の中間よりも後面側となるように配置されていて、かつ、前記第二の固定部材と交差していて、
前記柱の前面および左右の側面を前記補強部材により拘束していることを特徴とする、柱補強構造。 A column reinforcement structure that restrains the front and left and right sides of the column at the head and legs of the column,
Reinforcing members having a U-shaped cross section provided along the front and left and right side surfaces of the pillar,
A first fixing member that is disposed in a fixing member insertion hole formed in the column and fastens the reinforcing member to the front surface of the column;
A filler filled in a gap between the reinforcing member and the column and a gap between the fixing member insertion hole and the first fixing member;
A second fixing member that protrudes from the left and right side surfaces of the column and clamps the reinforcing member to the side surface of the column, and
The first fixing member is arranged such that the tip is on the rear side of the middle of the column at a position within a third of the column from the corner of the column and the beam connected to the column. Arranged and intersecting the second fixing member,
A column reinforcing structure characterized in that a front surface and left and right side surfaces of the column are constrained by the reinforcing member. - 柱の頭部と脚部において前記柱の前面および左右の側面を拘束する柱補強構造であって、
前記柱の前面および左右の側面に沿設された断面コの字状の補強部材と、
前記柱に形成された固定部材挿入孔に配設されて、前記補強部材を前記柱の前面に締め付ける第一の固定部材と、
前記補強部材と前記柱との隙間および前記固定部材挿入孔と前記第一の固定部材との隙間に充填される充填材と、
前記柱の左右の側面に突設されて、前記補強部材を前記柱の側面に締め付ける第二の固定部材と、を備え、
前記柱の前面および左右の側面を前記補強部材により拘束していて、
前記補強部材の前記柱の前面に対応する部分に補剛材が設けられており、
前記補剛材は、前記柱の前面に当接し、前記第一の固定部材の締付力を直接前記柱に伝達することを特徴とする、柱補強構造。 A column reinforcement structure that restrains the front and left and right sides of the column at the head and legs of the column,
Reinforcing members having a U-shaped cross section provided along the front and left and right side surfaces of the pillar,
A first fixing member that is disposed in a fixing member insertion hole formed in the column and fastens the reinforcing member to the front surface of the column;
A filler filled in a gap between the reinforcing member and the column and a gap between the fixing member insertion hole and the first fixing member;
A second fixing member that protrudes from the left and right side surfaces of the column and clamps the reinforcing member to the side surface of the column, and
The front and left and right sides of the pillar are constrained by the reinforcing member ,
A stiffener is provided in a portion corresponding to the front surface of the column of the reinforcing member,
The stiffener is in contact with the front surface of the column, and transmits the tightening force of the first fixing member directly to the column . - 前記補強部材が、一片が前記前面、他片が前記側面に配置されるように断面Ｌ字状に形成された鋼板を２枚組み合わせることにより断面コの字を呈することを特徴とする、請求項１または請求項２に記載の柱補強構造。 The reinforcing member exhibits a U-shaped cross-section by combining two steel plates formed in an L-shaped cross section so that one piece is disposed on the front surface and the other piece is disposed on the side surface. The column reinforcement structure according to claim 1 or 2.
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| JP5211016B2 (en) * | 2009-11-04 | 2013-06-12 | 日立Ｇｅニュークリア・エナジー株式会社 | Post-casting anchor structure in steel plate concrete structure and post-casting method of anchor in steel plate concrete structure |
| JP5192093B1 (en) * | 2012-09-27 | 2013-05-08 | 等 塩原 | Concrete beam shear reinforcement structure |
| JP2015063890A (en) * | 2013-08-27 | 2015-04-09 | 一般社団法人 レトロフィットジャパン協会 | Reinforcing structure of concrete column |
| JP2015135040A (en) * | 2013-12-16 | 2015-07-27 | Ｊｆｅシビル株式会社 | Repair and reinforcement structure for reinforced concrete building |
| JP6280145B2 (en) * | 2013-12-16 | 2018-02-14 | Ｊｆｅシビル株式会社 | Repair and reinforcement structure for reinforced concrete structures |
| JP6340194B2 (en) * | 2013-12-25 | 2018-06-06 | 大成建設株式会社 | Shear reinforcement structure and shear reinforcement method |
| JP5725488B1 (en) * | 2014-07-31 | 2015-05-27 | 一般社団法人 レトロフィットジャパン協会 | Concrete column reinforcement structure |
| JP5780442B1 (en) * | 2014-12-05 | 2015-09-16 | 一般社団法人 レトロフィットジャパン協会 | Reinforcement structure of building |
| KR101880630B1 (en) * | 2017-04-05 | 2018-07-20 | (주)제이스코리아 | a Seismic strengthening structure of buildings and a Seismic strengthening method using the same |
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| JPH0978534A (en) * | 1995-09-08 | 1997-03-25 | Mitsui Constr Co Ltd | Aseismatic reinforcing method for concrete pole structure |
| JPH09273318A (en) * | 1996-04-04 | 1997-10-21 | Fujita Corp | Earthquakeproof reinforcing structure for beam-column joint in existing reinforced concrete or steel-concrete composite structure |
| JPH09328909A (en) * | 1996-06-07 | 1997-12-22 | Shimizu Corp | Method for reinforcing concrete pillar |
| JP3764212B2 (en) * | 1996-06-18 | 2006-04-05 | 東急建設株式会社 | Reinforced concrete column reinforcement structure and its construction method |
| JP3766937B2 (en) * | 1996-07-12 | 2006-04-19 | 株式会社竹中工務店 | Reinforcing method for existing building pillars, beams, etc. and reinforcing member used in this reinforcing method |
| JPH10196132A (en) * | 1997-01-14 | 1998-07-28 | Toda Constr Co Ltd | Earthquake resistant reinforcing structure of column with wall |
| JP3806252B2 (en) * | 1998-08-04 | 2006-08-09 | 新日本製鐵株式会社 | Reinforcing method of concrete structure with reinforcing fiber sheet |
| JP2004060269A (en) * | 2002-07-29 | 2004-02-26 | Yoshiyuki Ogushi | Method of reinforcing column with wing wall |
| JP2005171728A (en) * | 2003-12-15 | 2005-06-30 | Kajima Corp | Bar arrangement structure in reinforced concrete-constructed beam-column connection part |
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2007
- 2007-08-24 JP JP2007218188A patent/JP5324764B2/en not_active Expired - Fee Related
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