JP2000017849A - Vibration control reinforcing structure of existing building - Google Patents

Vibration control reinforcing structure of existing building

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Publication number
JP2000017849A
JP2000017849A JP10182360A JP18236098A JP2000017849A JP 2000017849 A JP2000017849 A JP 2000017849A JP 10182360 A JP10182360 A JP 10182360A JP 18236098 A JP18236098 A JP 18236098A JP 2000017849 A JP2000017849 A JP 2000017849A
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JP
Japan
Prior art keywords
existing
column
steel frame
columns
protruded
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP10182360A
Other languages
Japanese (ja)
Other versions
JP3456417B2 (en
Inventor
Norihide Kojika
紀英 小鹿
Mitsuo Sakamoto
光雄 坂本
Shunichi Yamada
俊一 山田
Tomohiko Arita
友彦 有田
Norio Suzuki
紀雄 鈴木
Yasutsugu Kurokawa
泰嗣 黒川
Akihiro Kunimatsu
晃寛 國末
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kajima Corp
Original Assignee
Kajima Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a reinforcing structure for an existing building which can absorb earthquake energy by a vibration control device, and enhance the earthquake-resistance for the existing building with the building extension of fewer reinforcing elements, and simplify the connection of the reinforcing structural plane to existing columns and beams to improve workability, and reduce the rigidity of columns by integrally forming the existing columns and beams and a steel framework, and prevent the shear fracture of the existing columns. SOLUTION: A steel framework brace structure having a vibration control device such as an elastoplastic damper 6 or the like is assembled in an opening 3 surrounded by existing columns 1 and beams 2, and an anchorage metal fitting 7 is protruded at the face of the opening side of the column 1 and the beam 2, and a stud 8 is protruded at the face of the column-beam side of the steel framework 4, and a filling material 9 is charged between the column 1 and the beam 2 and the steel framework 4 without providing reinforcing rods, and a vibration control reinforcing structural plane is constructed by the vibration control device, and further, connection of the reinforcing structural plane to the existing column 1 and the beam 2 is simplified.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、耐震性の低い既存
建築物に対して、制震装置を組み込んだ補強要素を増設
することにより、既存建築物を制震化する制震補強構造
に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-seismic structure for an existing building having low seismic resistance by adding a reinforcing element incorporating a vibration control device to the existing building to control the existing building. It is.

【0002】[0002]

【従来の技術と発明が解決しようとする課題】従来、耐
震性の低い既存の鉄筋コンクリート建物を耐震補強する
場合、新たに壁あるいは鉄骨枠組ブレースを組み込んだ
耐震要素を増設する方法が採用されていた。
2. Description of the Related Art Conventionally, when an existing reinforced concrete building with low seismic resistance is seismically reinforced, a method of newly adding a seismic element incorporating a wall or a steel frame brace has been adopted. .

【0003】しかし、これらの方法により、所要の耐震
強度を得ようとすると、数多くの補強構面が必要とな
り、建物の使用勝手が低下し、また経済的でない等の問
題があった。
[0003] However, in order to obtain the required seismic strength by these methods, a large number of reinforcing structures are required, and there is a problem that the usability of the building is reduced and that the method is not economical.

【0004】また、鉄骨枠組を周囲の既存フレームに接
合する場合、既存の柱および梁の内面に後施工アンカー
などの定着金物を打ち込み、鉄骨枠組の外面にはスタッ
ドを打ち、その間にスパイラルフープ筋などの補強筋を
組み込み、無収縮モルタルなどの充填材を圧入して、既
存の柱および梁と鉄骨枠組とを完全に剛結している。
[0004] When a steel frame is joined to a surrounding existing frame, a fixing metal such as a post-installed anchor is driven into the inner surfaces of the existing columns and beams, and studs are driven into the outer surface of the steel frame. And reinforcing materials such as non-shrink mortar, and press-fitting fillers to completely connect the existing columns and beams with the steel frame.

【0005】しかし、このように鉄骨枠組を既存の柱・
梁に剛結する方法では、 接合作業が煩雑となり、施
工性が低下する、 鉄骨枠組を柱に剛結することで剛
性・耐力が上昇するが、その定量的評価が困難となる、
剛性が上昇することにより、補強構面の柱に応力が
集中する、 柱に鉄骨枠組を剛結していることによっ
て、一体化に伴う耐力上昇以上に、柱の剛性の上昇によ
る応力集中が生じ、逆に早期に柱が破壊してしまう可能
性がある、などの問題点がある。
[0005] However, as described above, the steel frame is used for the existing columns and
In the method of rigidly connecting to the beam, the joining work becomes complicated and the workability decreases, and rigidity and proof stress increase by rigidly connecting the steel frame to the column, but its quantitative evaluation becomes difficult.
Due to the increase in rigidity, stress concentrates on the columns of the reinforcement structure.By rigidly connecting the steel frame to the columns, stress concentration occurs due to the increase in rigidity of the columns more than the increase in proof stress accompanying integration On the contrary, there is a problem that the pillar may be broken at an early stage.

【0006】本発明は、このような問題点を解消すべく
なされたもので、その目的は、地震により建築物に入力
されたエネルギーを制震装置で吸収して数少ない補強要
素の増設で既存の建築物の耐震性を向上させることがで
きると共に、補強構面の既存の柱・梁への接合を簡略化
して施工性を向上させることができ、さらに既存の柱・
梁と鉄骨枠組との一体化による柱の剛性の上昇を低減
し、既存の柱の剪断破壊を防止することが可能な既存建
築物の制震補強構造を提供することにある。
The present invention has been made in order to solve such a problem, and an object of the present invention is to add an energy input to a building due to an earthquake by a vibration damping device and to add a few reinforcing elements to the existing structure. It can improve the seismic resistance of the building, simplify the joining of the reinforcement structure to the existing columns and beams, improve the workability, and improve the existing columns and beams.
An object of the present invention is to provide a seismic control reinforcement structure for an existing building that can reduce an increase in rigidity of a column due to integration of a beam and a steel frame and can prevent shear failure of an existing column.

【0007】[0007]

【課題を解決するための手段】本発明の既存建築物の制
震補強構造は、既存建築物の柱と梁で囲まれた開口部に
制震装置(鉄骨枠組とブレース間の相対変位量に応じて
振動エネルギを吸収する弾塑性ダンパー、オイルダンパ
ー、粘性ダンパー,粘弾性ダンパーなど)付きの鉄骨枠
組ブレース架構を組み込み、既存の柱および梁の開口部
側の面に後施工アンカー等の定着金物を突設し、鉄骨枠
組の柱梁側の面にスタッドを突設し、柱および梁と鉄骨
枠組との間にモルタル類等の充填材を充填して(柱部お
よび梁部に補強筋(スパイラルフープ筋、溶接金網、鉄
筋格子等)を設けない)構成されていることを特徴とす
る(請求項1:図1、図2(a) 参照)。
According to the present invention, there is provided a seismic control and reinforcement structure for an existing building, which comprises a vibration control device (a relative displacement between a steel frame and a brace) in an opening surrounded by columns and beams of the existing building. (Elasto-plastic dampers, oil dampers, viscous dampers, visco-elastic dampers, etc.) that absorb vibration energy according to the requirements. And studs are protruded from the column-beam side of the steel frame, and a filler such as mortar is filled between the columns and beams and the steel frame (reinforcing bars (columns and beams) No spiral hoop, welding wire mesh, reinforcing grid, etc.) are provided (see claim 1: FIGS. 1 and 2 (a)).

【0008】あるいは、既存建築物の柱と梁で囲まれた
開口部に制震装置付きの鉄骨枠組ブレース架構を組み込
み、既存の梁の開口部側の面に定着金物を突設し、鉄骨
枠組の梁部鉄骨の梁側の面にスタッドを突設し、梁と鉄
骨枠組の梁部鉄骨との間に充填材を充填し(梁部に補強
筋を設けない)、柱と鉄骨枠組の柱部鉄骨との間には充
填材のみを充填(柱部に定着金物・スタッド・補強筋を
設けない)する(請求項2:図2(b) 参照)。
[0008] Alternatively, a steel frame brace frame with a vibration control device is incorporated into an opening surrounded by columns and beams of an existing building, and a fixing hardware is protruded from a surface of the existing beam on the opening side to form a steel frame. Studs are protruded from the beam-side surface of the beam-shaped steel frame, and filler is filled between the beam and the beam-shaped steel frame of the steel frame (no reinforcing bars are provided in the beam), and the column and the column of the steel frame are framed. Only the filler is filled into the space between the steel parts (no fixing metal, studs, and reinforcing bars are provided on the pillars) (see claim 2: FIG. 2 (b)).

【0009】あるいは、既存建築物の柱と梁で囲まれた
開口部に制震装置付きの鉄骨枠組ブレース架構を組み込
み、既存の梁の開口部側の面に定着金物を突設し、鉄骨
枠組の梁部鉄骨の梁側の面にスタッドを突設し、梁と鉄
骨枠組の梁部鉄骨との間に充填材を充填し(梁部に補強
筋を設けない)、柱と鉄骨枠組の柱部鉄骨との間には隙
間を形成(柱部に定着金物・スタッド・補強筋・充填材
を設けない)する(請求項3:図2(c) 参照)。
[0009] Alternatively, a steel frame braced frame with a vibration control device is incorporated in an opening surrounded by columns and beams of an existing building, and a fixing metal is protruded from a surface of the existing beam on the opening side to form a steel frame. Studs are protruded from the beam-side surface of the beam-shaped steel frame, and filler is filled between the beam and the beam-shaped steel frame of the steel frame (no reinforcement is provided in the beam), and the column and the column of the steel frame are A gap is formed between the steel part and the column (no fixing hardware, studs, reinforcing bars, or fillers are provided on the pillar part) (see claim 3: FIG. 2 (c)).

【0010】また、柱が脆弱で剪断破壊をするような場
合には、既存建築物の柱と梁で囲まれた開口部に制震装
置付きの鉄骨枠組ブレース架構を組み込み、既存の柱の
開口部側の面に補強鋼板を添設し、この補強鋼板の開口
部側の面にスタッドを突設し、既存の梁の開口部側の面
に定着金物を突設し、鉄骨枠組の柱梁側の面にスタッド
を突設し、柱の補強鋼板および梁と鉄骨枠組との間に、
補強筋を組み込み、充填材を充填する(請求項4:図3
参照)。
In the case where the columns are fragile and cause shear failure, a steel frame brace frame with a vibration control device is incorporated in the opening surrounded by the columns and beams of the existing building, and the opening of the existing column is opened. A reinforcing steel plate is attached to the surface of the steel plate, studs are protruded from the surface on the opening side of this reinforcing steel plate, and fixing hardware is protruded from the surface on the opening side of the existing beam. Protruding studs on the side surface, between the reinforcing steel plate and beam of the column and the steel frame,
Reinforcing bars are incorporated and filler is filled (Claim 4: FIG. 3)
reference).

【0011】あるいは、既存建築物の柱と梁で囲まれた
開口部に制震装置付きの鉄骨枠組ブレース架構を組み込
み、既存の柱の開口部側の面に補強鋼板を添設し、この
補強鋼板の開口部側の面にスタッドを突設し、既存の梁
の開口部側の面に定着金物を突設し、鉄骨枠組の柱梁側
の面にスタッドを突設し、柱の補強鋼板および梁と鉄骨
枠組との間に、充填材を充填(補強筋を設けない)する
(請求項5:図3参照)。
[0011] Alternatively, a steel frame brace frame with a vibration control device is incorporated into an opening surrounded by columns and beams of an existing building, and a reinforcing steel plate is attached to a surface of the existing column on the opening side, and the reinforcement is provided. Studs are protruded on the surface of the steel plate on the opening side, fixing hardware is protruded on the surface of the existing beam on the opening side, and studs are protruded on the column-beam surface of the steel frame to strengthen the steel plate for the column. A filler is filled between the beam and the steel framework (no reinforcing bars are provided) (see claim 5: FIG. 3).

【0012】以上の制震補強構造において、充填材に
は、モルタルの他、補強繊維混入モルタルを用いること
もできる(請求項6)。
In the above-described vibration damping reinforcement structure, a mortar mixed with reinforcing fibers can be used as the filler in addition to the mortar.

【0013】以上のような構成において、既存の柱と梁
に囲まれた開口部内に制震装置付きの鉄骨枠組ブレース
架構が組み込まれ、地震により建築物自体が変形する
と、同時に制震装置も変形を受け、この制震装置は変形
により振動エネルギーを吸収して制震効果を発揮し、補
強構面の増設数が少なくても既存の建築物の耐震性を向
上させることができる。
In the above configuration, a steel frame brace frame with a vibration control device is incorporated in an opening surrounded by existing columns and beams, and when the building itself is deformed due to an earthquake, the vibration control device is also deformed. In response to this, the vibration damping device absorbs vibration energy by deformation to exhibit a vibration damping effect, and can improve the seismic resistance of existing buildings even with a small number of reinforcing structures.

【0014】また、このような制震補強では、補強構面
から周辺フレームに伝達すべき力が、一般の耐震補強よ
り小さくてすみ、また、その大きさを確実にコントロー
ルすることができるので、補強構面の既存の柱・梁への
接合法を簡略化することができ、施工性を高めることが
できる。
[0014] Further, in such a seismic control reinforcement, the force to be transmitted from the reinforcement structure to the peripheral frame can be smaller than that of a general seismic reinforcement, and the magnitude can be reliably controlled. It is possible to simplify the method of joining the reinforcing structure surface to the existing columns and beams, and to improve workability.

【0015】さらに、既存の柱・梁と鉄骨枠組の接合部
が簡略化されることにより、柱と鉄骨枠組の一体化によ
る柱の剛性の上昇が緩和もしくは防止され、柱に耐力以
上の応力が集中せず、また柱際の充填材部分には早期に
クラックが生じ、その面での滑りによりエネルギー吸収
効果が得られ、また補強筋を用いる請求項4では補強鋼
板により柱が補強され、柱の早期の剪断破壊を防止する
ことができる。
Further, by simplifying the joint between the existing column / beam and the steel frame, an increase in rigidity of the column due to the integration of the column and the steel frame is reduced or prevented, and a stress greater than the proof stress is applied to the column. The filler does not concentrate, cracks are formed in the filler portion at the front of the column at an early stage, and an energy absorbing effect is obtained by sliding on the surface. In addition, in the case of using reinforcing bars, the column is reinforced by a reinforcing steel plate. Premature shear failure can be prevented.

【0016】[0016]

【発明の実施の形態】以下、本発明を図示する実施の形
態に基づいて説明する。図1は本発明の既存の鉄筋コン
クリート造の建物における制震補強構造の基本的な実施
形態を示したものである。図2、図3はその変形例を示
したものである。図1において、既存の鉄筋コンクリー
ト造の骨組みにおける柱1、1と梁2、2で囲まれた開
口部3に、鉄骨枠組4とV字型または逆V字型のブレー
ス5からなる架構を組み込み、鉄骨枠組4の梁部鉄骨4
aとブレース5の頭部5aとを弾塑性ダンパー(鋼板ダ
ンパー)6で連結する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings. FIG. 1 shows a basic embodiment of a vibration damping reinforcement structure in an existing reinforced concrete building of the present invention. FIG. 2 and FIG. 3 show modified examples thereof. In FIG. 1, a frame composed of a steel frame 4 and a V-shaped or inverted V-shaped brace 5 is incorporated into an opening 3 surrounded by columns 1, 1 and beams 2, 2 in an existing reinforced concrete frame. Steel frame 4 of steel frame 4
a and the head 5 a of the brace 5 are connected by an elastic-plastic damper (steel plate damper) 6.

【0017】弾塑性ダンパー6は、鋼板に円形等の孔を
形成したものであり、梁部鉄骨4aおよび頭部5aを構
面の面外方向から挟持するように一対で、梁長手方向に
は複数組で配設され、梁部鉄骨4aおよび頭部5aにボ
ルトで固定される。なお、制震装置は図示したものに限
らず、その他の弾塑性ダンパー、オイルダンパー、粘性
ダンパー、粘弾性ダンパー等でもよい。
The elasto-plastic damper 6 is formed by forming a circular hole or the like in a steel plate. A pair of the elastic-plastic damper 6 sandwiches the beam steel frame 4a and the head 5a from the out-of-plane direction of the structural surface. A plurality of sets are provided and fixed to the beam steel frame 4a and the head 5a with bolts. The vibration damping device is not limited to the illustrated one, but may be another elasto-plastic damper, oil damper, viscous damper, viscoelastic damper, or the like.

【0018】既存の上下の梁2の開口部3側の内面には
後施工アンカーなどの定着金物7を打ち込み、鉄骨枠組
4の上下の梁部鉄骨4aおよび左右の柱部鉄骨4bの柱
梁側の外面にはスタッド8を突設しておき、柱1および
梁2と鉄骨枠組4との間に、補強筋を設けることなく、
モルタル、補強繊維混入モルタル等の充填材9を注入し
て、既存の柱1および梁2と鉄骨枠組4とを一体化す
る。
An anchoring metal 7 such as a post-installed anchor is driven into the inner surface of the existing upper and lower beams 2 on the opening 3 side, and the upper and lower beams 4a and the right and left columns 4b of the steel frame 4 are connected. A stud 8 is protruded from the outer surface of the steel frame, and a reinforcing bar is not provided between the column 1 and the beam 2 and the steel frame 4,
A filler 9 such as mortar or mortar mixed with reinforcing fibers is injected to integrate the existing column 1 and beam 2 with the steel frame 4.

【0019】図2(a) は、図1と同様の制震装置付き鉄
骨枠組ブレース架構において、構面内中央に開口11が
形成されるようにしたものであり、下梁2上の床スラブ
10に取り付く梁部鉄骨4aの中央部分をカットしてい
る。接合方法は、図1と同様である。
FIG. 2 (a) shows a steel framing brace frame with a vibration damping device similar to that of FIG. 1, in which an opening 11 is formed in the center of the construction plane. The central portion of the beam steel frame 4a attached to 10 is cut. The joining method is the same as in FIG.

【0020】図2(b) は、図1と同様の制震装置付き鉄
骨枠組ブレース架構において、梁部分のみに定着金物7
・スタッド8・充填材9を施し、既存の柱1と柱部鉄骨
4bの間に充填材9のみを充填した例である。
FIG. 2 (b) shows a steel frame brace frame with a vibration damping device similar to that of FIG.
In this example, the stud 8 and the filler 9 are applied, and only the filler 9 is filled between the existing column 1 and the column steel frame 4b.

【0021】図2(c) は、図1と同様の制震装置付き鉄
骨枠組ブレース架構において、梁部分のみに定着金物7
・スタッド8・充填材9を施し、既存の柱1と柱部鉄骨
4bの間には充填材を充填することなく間隙が形成され
るようにした例である。
FIG. 2 (c) shows a steel frame brace frame with a vibration damping device similar to that of FIG.
In this example, a stud 8 and a filler 9 are applied so that a gap is formed between the existing column 1 and the column steel frame 4b without filling the filler.

【0022】また、柱1が脆弱で剪断破壊をするような
場合には、図3に示すように、柱1の開口部3側の面を
鋼板20で補強し、その上で前述した制震装置付き鉄骨
枠組ブレース架構を組み込み、柱1の補強鋼板20の開
口部3側の内面にスタッド21を突設し、既存の梁2に
は定着金物7を打ち込み、鉄骨枠組4の柱梁側の外面に
はスタッド8を突設し、柱1の補強鋼板20および既存
の梁2と鉄骨枠組4との間に補強筋22を組み込み、充
填材9を注入して一体化させる。
In the case where the column 1 is fragile and breaks in shear, as shown in FIG. 3, the surface of the column 1 on the side of the opening 3 is reinforced with a steel plate 20, and then the above-described vibration control is performed. A steel frame brace frame with a device is incorporated, a stud 21 is protruded from the inner surface of the reinforcing steel plate 20 of the column 1 on the side of the opening 3, a fixing metal 7 is driven into the existing beam 2, and a column-beam side of the steel frame 4 is provided. Studs 8 are protruded from the outer surface, and reinforcing bars 22 are installed between the steel plate 20 of the column 1 and the existing beam 2 and the steel frame 4, and the filler 9 is injected to be integrated.

【0023】あるいは、図3と同様の構造において、柱
1の補強鋼板20および既存の梁2と鉄骨枠組4との間
に補強筋を設けることなく、充填材9を注入して一体化
させる。
Alternatively, in a structure similar to that of FIG. 3, the filler 9 is injected and integrated without providing reinforcing bars between the reinforcing steel plate 20 of the column 1 and the existing beam 2 and the steel frame 4.

【0024】以上のような構成の制震装置付き鉄骨枠組
ブレース架構において、 (1) 地震により建築物に入力されたエネルギーが弾塑性
ダンパー6で吸収され、数少ない補強要素の増設で既存
の建築物の耐震性が向上する。 (2) このような鉄骨枠組ブレース架構に制震装置の付い
た制震補強では、補強構面から周辺フレームに伝達すべ
き力が一般に耐震補強よりも小さくてすみ、また、その
大きさを確実にコントロールすることができるので、補
強構面の既存の柱1、梁2への接合方法を簡略化するこ
とができ、施工性を向上させることができる。なお、図
1、図2(a) 、図2(b) 、図2(c) の順に施工性が向上
する。 (3-1) 既存の柱1と鉄骨枠組4の接合部を簡略化するこ
とにより、枠組み鉄骨と一体化による柱1の剛性の上昇
が緩和され(図1、図2(a) 、図2(b) の場合)、ある
いは防止され(図2(c) の場合)、柱1に耐力以上の応
力を集中させないようにすることができる。図3の場合
には、補強鋼板20により柱1に耐力以上の応力が集中
しない。 (3-2) その結果として、脆弱な柱(剪断補強筋の少ない
柱)に応力が集中して剪断破壊などが早期に生じること
を解消することが可能となる。 (3-3) 柱1の充填材部分には早期にクラックが生じ、そ
の面での滑りによりエネルギーの吸収効果が得られる
(図1、図2(a) 、図2(b) の場合)。(3-4) 既存の柱
1と鉄骨枠組4の縁が切れて、独立で挙動することか
ら、柱1の補強後の剛性・耐力の評価が容易となり、補
強設計の精度や信頼性が保証される。 (3-5) 既存の柱1と柱部鉄骨4bの接合部における定着
金物7・スタッド8の有無(図1と図2(b))により、
柱1の定着材部分にクラックが生じる層間変形レベルが
異なることから、対象とする地震動の大きさに応じて、
図1タイプと図2(b)タイプを使い分け、損傷程度やエ
ネルギー吸収の効果をコントロールすることができる。
In the steel frame brace frame with a vibration control device having the above-described structure, (1) the energy input to the building due to the earthquake is absorbed by the elasto-plastic damper 6, and the existing building is expanded by adding a few reinforcing elements. The seismic resistance of is improved. (2) In the case of such a seismic reinforcement with a steel frame brace frame equipped with a vibration control device, the force to be transmitted from the reinforcement structure to the surrounding frame is generally smaller than that of the seismic reinforcement, and the size must be ensured. Therefore, it is possible to simplify the method of joining the reinforcing structure to the existing columns 1 and beams 2 and to improve workability. The workability is improved in the order of FIGS. 1, 2 (a), 2 (b) and 2 (c). (3-1) By simplifying the joint between the existing column 1 and the steel frame 4, the increase in rigidity of the column 1 due to integration with the framework steel frame is mitigated (FIGS. 1 and 2 (a) and FIG. 2). In the case of (b)), or is prevented (in the case of FIG. 2 (c)), it is possible to prevent the stress more than the proof stress from being concentrated on the column 1. In the case of FIG. 3, the stress higher than the proof stress is not concentrated on the column 1 by the reinforcing steel plate 20. (3-2) As a result, it is possible to prevent the stress from being concentrated on the fragile column (the column with few shear reinforcing bars) and causing shear failure or the like at an early stage. (3-3) Cracks occur early in the filler portion of the column 1, and the effect of absorbing energy can be obtained by sliding on that surface (in the case of FIGS. 1, 2 (a) and 2 (b)). . (3-4) The existing column 1 and steel frame 4 are cut off and behave independently, making it easy to evaluate the rigidity and proof strength of the column 1 after reinforcement, and guarantee the accuracy and reliability of the reinforcement design. Is done. (3-5) Depending on the presence or absence of the fixing hardware 7 and the stud 8 at the joint between the existing column 1 and the column steel frame 4b (FIGS. 1 and 2 (b)),
Since the interlayer deformation level at which cracks occur in the fixing material portion of the column 1 differs, depending on the magnitude of the target seismic motion,
By selectively using the type shown in FIG. 1 and the type shown in FIG. 2B, the degree of damage and the effect of energy absorption can be controlled.

【0025】[0025]

【発明の効果】本発明の既存建築物の制震補強構造は、
既存建築物の柱と梁で囲まれた開口部に制震装置付きの
鉄骨枠組ブレース架構を組み込み、既存の柱および梁の
開口部側の面に後施工アンカー等の定着金物を突設し、
鉄骨枠組の柱梁側の面にスタッドを突設し、柱および梁
と鉄骨枠組との間に補強筋を設けることなくモルタル等
の充填材を充填するなどして、既存の柱・梁と鉄骨枠組
の剛接合を解消するようにしたため、次のような効果を
奏する。 (1) 既存の柱と梁に囲まれた開口部内に制震装置付きの
鉄骨枠組ブレース架構が組み込まれ、地震により建築物
自体が変形すると、同時に制震装置も変形を受け、この
制震装置は変形により振動エネルギーを吸収して制震効
果を発揮し、補強構面の増設数が少なくても既存の建築
物の耐震性を向上させることができ、建物の使用勝手が
向上すると共に、比較的安価な既存建築物の補強構造を
得ることができる。 (2) このような制震補強では、補強構面から周辺フレー
ムに伝達すべき力が、一般の耐震補強より小さくてす
み、また、その大きさを確実にコントロールすることが
できるので、補強構面の既存の柱・梁への接合法を簡略
化することができ、施工性を向上させることができ、コ
ストの低減を図ることができる。 (3) 既存の柱・梁と鉄骨枠組の接合部が簡略化されるこ
とにより、柱と鉄骨枠組の一体化による柱の剛性の上昇
が緩和もしくは防止され、柱に耐力以上の応力が集中せ
ず、また柱際の補強筋を設けない充填材部分には早期に
クラックが生じ、その面での滑りによりエネルギー吸収
効果が得られ、柱の早期の剪断破壊を防止することがで
きる。
According to the present invention, the seismic control and reinforcement structure of an existing building is
Incorporate a steel frame brace frame with a vibration control device into the opening surrounded by columns and beams of the existing building, and protrude anchoring hardware such as post-installed anchors on the surface of the existing columns and beams on the opening side,
Studs are protruded from the column-beam side of the steel frame, and fillers such as mortar are filled without providing reinforcement between the columns and beams and the steel frame. Since the rigid connection of the framework is eliminated, the following effects are obtained. (1) A steel framed brace frame with a vibration control device is installed in the opening surrounded by the existing columns and beams, and when the building itself is deformed by the earthquake, the vibration control device is also deformed. Can absorb vibration energy by deformation and exert a vibration damping effect, improve the seismic resistance of existing buildings even with a small number of reinforcement structures, improve the use of buildings, and compare It is possible to obtain an inexpensive reinforcing structure for existing buildings. (2) With such a seismic control reinforcement, the force to be transmitted from the reinforcement structure to the surrounding frame can be smaller than that of general seismic reinforcement, and the size can be controlled reliably. The method of joining the surface to the existing columns and beams can be simplified, the workability can be improved, and the cost can be reduced. (3) By simplifying the joints between the existing columns / beams and the steel frame, the increase in rigidity of the columns due to the integration of the columns and the steel frame is reduced or prevented, and stresses higher than the proof stress are concentrated on the columns. In addition, cracks occur early in the filler portion where no reinforcing bars are provided near the pillars, and an energy absorbing effect can be obtained by slipping on the surface, whereby early shear failure of the pillars can be prevented.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の既存建築物の制震補強構造の基本的な
例であり、(a) は正面図、(b)は(a) におけるb−b線
断面図である。
FIG. 1 is a basic example of a seismic control and reinforcement structure for an existing building according to the present invention, wherein (a) is a front view and (b) is a cross-sectional view taken along the line bb in (a).

【図2】図1の制震補強構造の変形例を示す正面図であ
る。
FIG. 2 is a front view showing a modified example of the vibration damping reinforcement structure of FIG.

【図3】図1の制震補強構想の他の変形例であり、(a)
は正面図、(b) は(a) のb−b線断面図である。
FIG. 3 is another modified example of the seismic control reinforcement concept of FIG. 1, and (a).
2 is a front view, and FIG. 2B is a sectional view taken along line bb of FIG.

【符号の説明】[Explanation of symbols]

1……柱 2……梁 3……開口部 4……鉄骨枠組 4a…梁部鉄骨 4b…柱部鉄骨 5……ブレース 5a…頭部 6……弾塑性ダンパー(鋼板ダンパー) 7……定着金物(後施工アンカー等) 8……スタッド 9……充填材(モルタル、補強繊維混入モルタル等) 10……床スラブ 11……開口 20……補強鋼板 21……スタッド 22……補強筋(スパイラルフープ筋等) DESCRIPTION OF SYMBOLS 1 ... Column 2 ... Beam 3 ... Opening 4 ... Steel frame 4a ... Beam steel 4b ... Column steel 5 ... Brace 5a ... Head 6 ... Elastic-plastic damper (steel plate damper) 7 ... Fixation Hardware (post-installed anchor, etc.) 8 Stud 9 Filler (mortar, mortar mixed with reinforcing fiber, etc.) 10 Floor slab 11 Opening 20 Reinforced steel plate 21 Stud 22 Reinforcing bar (spiral) Hoop streaks, etc.)

フロントページの続き (72)発明者 山田 俊一 東京都港区元赤坂1丁目2番7号 鹿島建 設株式会社内 (72)発明者 有田 友彦 東京都港区元赤坂1丁目2番7号 鹿島建 設株式会社内 (72)発明者 鈴木 紀雄 東京都港区元赤坂1丁目2番7号 鹿島建 設株式会社内 (72)発明者 黒川 泰嗣 東京都港区元赤坂1丁目2番7号 鹿島建 設株式会社内 (72)発明者 國末 晃寛 東京都港区元赤坂1丁目2番7号 鹿島建 設株式会社内 Fターム(参考) 2E176 AA04 BB15 BB28 Continuation of the front page (72) Inventor Shunichi Yamada Kashima Construction Co., Ltd. 1-2-7 Moto-Akasaka, Minato-ku, Tokyo (72) Inventor Tomohiko Arita Kashima Ken 1-2-7 Moto-Akasaka, Minato-ku, Tokyo (72) Inventor Norio Suzuki Kashima Construction 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction (72) Inventor Yasushi Kurokawa 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima (72) Inventor Akihiro Kunimatsu 1- 2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Corporation F-term (reference) 2E176 AA04 BB15 BB28

Claims (6)

【特許請求の範囲】[Claims] 【請求項1】 既存建築物の柱と梁で囲まれた開口部に
制震装置付きの鉄骨枠組ブレース架構を組み込み、既存
の柱および梁の開口部側の面に定着金物を突設し、鉄骨
枠組の柱梁側の面にスタッドを突設し、柱および梁と鉄
骨枠組との間に充填材を充填して構成されていることを
特徴とする既存建築物の制震補強構造。
1. A steel frame brace frame with a vibration control device is incorporated in an opening surrounded by columns and beams of an existing building, and a fixing metal is projected from a surface of the existing columns and beams on the opening side, A seismic control reinforcement structure for an existing building, characterized in that a stud is protruded from a column-beam side surface of a steel frame and a filler is filled between the column and the beam and the steel frame.
【請求項2】 既存建築物の柱と梁で囲まれた開口部に
制震装置付きの鉄骨枠組ブレース架構を組み込み、既存
の梁の開口部側の面に定着金物を突設し、鉄骨枠組の梁
部鉄骨の梁側の面にスタッドを突設し、梁と鉄骨枠組の
梁部鉄骨との間に充填材を充填し、柱と鉄骨枠組の柱部
鉄骨との間には充填材のみを充填して構成されているこ
とを特徴とする既存建築物の制震補強構造。
2. A steel frame framework having a brace frame with a vibration control device incorporated in an opening surrounded by columns and beams of an existing building, and a fixing hardware protruding from a surface of the existing beam on the opening side. Studs are protruded from the beam side surface of the beam steel frame, and the filler is filled between the beam and the beam steel frame of the steel frame.Only the filler is filled between the column and the column steel frame of the steel frame. A seismic control reinforcement structure for an existing building, characterized by being filled with a material.
【請求項3】 既存建築物の柱と梁で囲まれた開口部に
制震装置付きの鉄骨枠組ブレース架構を組み込み、既存
の梁の開口部側の面に定着金物を突設し、鉄骨枠組の梁
部鉄骨の梁側の面にスタッドを突設し、梁と鉄骨枠組の
梁部鉄骨との間に充填材を充填し、柱と鉄骨枠組の柱部
鉄骨との間には隙間を形成して構成されていることを特
徴とする既存建築物の制震補強構造。
3. A steel frame with a brace frame with a vibration control device incorporated in an opening surrounded by columns and beams of an existing building, and a fixing hardware is projected from a surface on an opening side of the existing beam. Studs are protruded from the beam side surface of the beam of the steel frame, and filler is filled between the beam and the beam of the steel frame, forming a gap between the column and the steel frame of the steel frame. A seismic control reinforcement structure for existing buildings, characterized by being constructed as follows.
【請求項4】 既存建築物の柱と梁で囲まれた開口部に
制震装置付きの鉄骨枠組ブレース架構を組み込み、既存
の柱の開口部側の面に補強鋼板を添設し、この補強鋼板
の開口部側の面にスタッドを突設し、既存の梁の開口部
側の面に定着金物を突設し、鉄骨枠組の柱梁側の面にス
タッドを突設し、柱の補強鋼板および梁と鉄骨枠組との
間に、補強筋を組み込み、充填材を充填して構成されて
いることを特徴とする既存建築物の制震補強構造。
4. A steel frame brace frame with a vibration control device is incorporated in an opening surrounded by columns and beams of an existing building, and a reinforcing steel plate is attached to a surface of the existing column on the opening side, and the reinforcement is provided. Studs are protruded on the surface of the steel plate on the opening side, fixing hardware is protruded on the surface of the existing beam on the opening side, and studs are protruded on the column-beam surface of the steel frame to strengthen the steel plate for the column. A seismic control reinforcement structure for an existing building, wherein reinforcement structures are incorporated between a beam and a steel frame and filled with filler.
【請求項5】 既存建築物の柱と梁で囲まれた開口部に
制震装置付きの鉄骨枠組ブレース架構を組み込み、既存
の柱の開口部側の面に補強鋼板を添設し、この補強鋼板
の開口部側の面にスタッドを突設し、既存の梁の開口部
側の面に定着金物を突設し、鉄骨枠組の柱梁側の面にス
タッドを突設し、柱の補強鋼板および梁と鉄骨枠組との
間に、充填材を充填して構成されていることを特徴とす
る既存建築物の制震補強構造。
5. A steel framed brace frame with a vibration control device is incorporated into an opening of an existing building surrounded by columns and beams, and a reinforcing steel plate is attached to a surface of the existing column on the opening side, and the reinforcement is provided. Studs are protruded on the surface of the steel plate on the opening side, fixing hardware is protruded on the surface of the existing beam on the opening side, and studs are protruded on the column-beam surface of the steel frame to strengthen the steel plate for the column. A seismic control reinforcement structure for an existing building, characterized by being filled with filler between a beam and a steel frame.
【請求項6】 充填材に補強繊維混入モルタルを用いる
ことを特徴とする請求項1、請求項2、請求項3、請求
項4、または請求項5に記載の既存建築物の制震補強構
造。
6. The vibration damping reinforcement structure for an existing building according to claim 1, wherein a mortar mixed with reinforcing fibers is used as a filler. .
JP18236098A 1998-06-29 1998-06-29 Seismic control reinforcement structure of existing building Expired - Lifetime JP3456417B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18236098A JP3456417B2 (en) 1998-06-29 1998-06-29 Seismic control reinforcement structure of existing building

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18236098A JP3456417B2 (en) 1998-06-29 1998-06-29 Seismic control reinforcement structure of existing building

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JP2000017849A true JP2000017849A (en) 2000-01-18
JP3456417B2 JP3456417B2 (en) 2003-10-14

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Country Link
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JP2002121903A (en) * 2000-10-12 2002-04-26 Kajima Corp Aseismatic reinforcing structure for existing structure
JP2003049547A (en) * 2001-08-03 2003-02-21 Toda Constr Co Ltd Seismic-response controlled and aseismatic reinforcing structure for existing building
JP2008014065A (en) * 2006-07-07 2008-01-24 Toda Constr Co Ltd Aseismatic reinforcing structure of existing building, and its construction method
JP2008111314A (en) * 2006-10-31 2008-05-15 Toda Constr Co Ltd Aseismatic reinforcing structure of existing building and aseismatic reinforcing method used for the same
KR101026106B1 (en) 2010-08-27 2011-04-05 (주)다인건설 Junction structure of installation frame for seismic control damper and it's junction method
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Publication number Priority date Publication date Assignee Title
JP2002121903A (en) * 2000-10-12 2002-04-26 Kajima Corp Aseismatic reinforcing structure for existing structure
JP2003049547A (en) * 2001-08-03 2003-02-21 Toda Constr Co Ltd Seismic-response controlled and aseismatic reinforcing structure for existing building
JP2008014065A (en) * 2006-07-07 2008-01-24 Toda Constr Co Ltd Aseismatic reinforcing structure of existing building, and its construction method
JP2008111314A (en) * 2006-10-31 2008-05-15 Toda Constr Co Ltd Aseismatic reinforcing structure of existing building and aseismatic reinforcing method used for the same
KR101026106B1 (en) 2010-08-27 2011-04-05 (주)다인건설 Junction structure of installation frame for seismic control damper and it's junction method
WO2012111968A2 (en) * 2011-02-15 2012-08-23 조선대학교 산학협력단 Displacement amplification-type seismic control system and constructing method thereof
KR101181987B1 (en) 2011-02-15 2012-09-11 조선대학교산학협력단 Displacement-Amplifying damping system and Construction method using that
WO2012111968A3 (en) * 2011-02-15 2012-12-20 조선대학교 산학협력단 Displacement amplification-type seismic control system and constructing method thereof
JP2014510204A (en) * 2011-02-15 2014-04-24 インダストリー−アカデミック コーポレーション ファウンデイション,チョソン ユニバーシティー Displacement amplification type vibration control system and its construction method

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