JP3323623B2 - Vibration control device for buildings using eccentric brace damper - Google Patents
Vibration control device for buildings using eccentric brace damperInfo
- Publication number
- JP3323623B2 JP3323623B2 JP00171894A JP171894A JP3323623B2 JP 3323623 B2 JP3323623 B2 JP 3323623B2 JP 00171894 A JP00171894 A JP 00171894A JP 171894 A JP171894 A JP 171894A JP 3323623 B2 JP3323623 B2 JP 3323623B2
- Authority
- JP
- Japan
- Prior art keywords
- eccentric
- brace
- arm portion
- eccentric brace
- steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は特に鉄骨構造、その他Ｒ
Ｃ、ＳＲＣ、混合構造に適用される偏心ブレースダンパ
ーによる建築物の制振装置に係るものである。BACKGROUND OF THE INVENTION The present invention relates to a steel structure,
The present invention relates to a vibration damping device for a building using an eccentric brace damper applied to C, SRC, and a mixed structure.
【０００２】[0002]
【従来の技術】従来、骨組構造に用いられる制振構造と
しては図４に示す如く、柱ａ，梁ｂで囲まれた構造にブ
レースＣを取り付け、同ブレースの上部と上部梁との間
に制振パネルｄを取り付けた構造がある。この骨組に層
間変形を生じると制振パネルはせん断力を受け、ブレー
スも軸力を受けることになる。このとき制振パネルはせ
ん断変形し、その履歴吸収エネルギーとして建築物の振
動エネルギーを吸収して建築物の振動を低減させる。ブ
レースは同ブレースに入る軸力によって多少の変形を生
じる。2. Description of the Related Art Conventionally, as a vibration damping structure used in a frame structure, a brace C is attached to a structure surrounded by columns a and beams b as shown in FIG. There is a structure in which a damping panel d is attached. When the frame undergoes interlayer deformation, the damping panel receives a shearing force and the brace also receives an axial force. At this time, the vibration damping panel undergoes shear deformation, and absorbs the vibration energy of the building as its hysteresis absorption energy to reduce the vibration of the building. The brace is slightly deformed by the axial force entering the brace.
【０００３】[0003]
【発明が解決しようとする課題】前記従来の制振構造で
はブレースの変形があるにしても、主に制振パネルが変
形することによって制振効果が得られる。制振パネルの
変形可能なせん断変形量は同パネルの形状と大きさによ
り限界がある。階高の高い建築物において、前記した制
振パネルと制振ブレースとの組合せによって制振を行う
場合、層変形が大きくなって制振パネルの使用限界を超
えることがあり、また構造も複雑化する。In the conventional vibration damping structure, even if the brace is deformed, the vibration damping effect can be obtained mainly by deforming the vibration damping panel. The amount of deformable shear deformation of the damping panel is limited by the shape and size of the panel. In a building with a high floor, when damping is performed by a combination of the damping panel and the damping brace described above, the layer deformation may increase and exceed the use limit of the damping panel, and the structure may be complicated. I do.
【０００４】本発明は前記従来技術の有する問題点に鑑
みて提案されたもので、その目的とする処は、比較的簡
単な構造で確実な制振効果を挙げることができる建築物
の制振装置を提供する点にある。SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned problems of the prior art, and has as its object the purpose of the present invention is to provide a vibration damper for a building which can provide a reliable vibration damping effect with a relatively simple structure. The point is to provide a device.
【０００５】[0005]
【課題を解決するための手段】前記の目的を達成するた
め本発明は、柱と梁で構成された骨組内に形鋼で構成さ
れた偏心ブレースを配設してなる、偏心ブレースダンパ
ーによる建築物の制振装置において、前記偏心ブレース
は、該偏心ブレースの一方の端部をなす第１アーム部分
と、該偏心ブレースの他方の端部をなす第２アーム部分
と、第１端が前記第１アーム部分に連なるように接合さ
れ第２端が前記第２アーム部分に連なるように接合され
た中央変形部分とで構成されており、前記偏心ブレース
は、前記第１アーム部分の先端部が第１連結箇所におい
て前記骨組に連結され、前記第２アーム部分の先端部が
第２連結箇所において前記骨組に連結され、前記第１連
結箇所と前記第２連結箇所とを結ぶ直線に対して前記中
央変形部分が偏心しているように構成されており、前記
偏心ブレースは、前記中央変形部分を構成する形鋼を一
般の鋼材より降伏点の低い鋼材からなる形鋼とすること
で、前記偏心ブレースの両先端部間に圧縮力または引張
力が作用したときに、前記中央変形部分を構成する形鋼
に塑性曲げ変形が発生するように構成されていることを
特徴とする。SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides an eccentric brace damper constructed by arranging an eccentric brace made of a shaped steel in a frame made up of columns and beams. In the vibration damping device for an object, the eccentric brace has a first arm portion forming one end of the eccentric brace, a second arm portion forming the other end of the eccentric brace, and a first end formed by the first end. The eccentric brace comprises a central deformed portion joined so as to be connected to one arm portion and a second end joined so as to be connected to the second arm portion. One end of the second arm portion is connected to the skeleton at a second connection point, and the tip of the second arm portion is connected to the skeleton at a second connection point, and the center of the straight line connecting the first connection point and the second connection point. Deformed part is eccentric The eccentric brace is configured such that the shaped steel constituting the central deformed portion is a shaped steel made of a steel material having a lower yield point than a general steel material, so that the eccentric brace is formed between the two end portions of the eccentric brace. When a compressive force or a tensile force acts on the steel, a plastic bending deformation is generated in the section steel constituting the central deformed portion.
【０００６】また、請求項２の発明は、前記中央変形部
分と前記第１アーム部分との接合部、及び、前記中央変
形部分と前記第２アーム部分との接合部を、脱連結可能
な接合部とすることにより、前記中央変形部分を構成す
る形鋼の交換を容易にしたことを特徴とする。According to a second aspect of the present invention, a joint portion between the central deformed portion and the first arm portion and a joint portion between the central deformed portion and the second arm portion are detachably connectable. The replacement of the section steel forming the central deformed portion is facilitated by the use of the portion.
【０００７】[0007]
【作用】本発明は前記したように構成されているので、
柱と梁で構成された骨組に地震や風等によって層間変形
を生じると、偏心ブレース全体では伸びる方向、又は縮
む方向に軸力を受ける。このとき中央部分のモーメント
は最大となり、曲げ変形が生じる。Since the present invention is configured as described above,
When the frame composed of columns and beams undergoes interlayer deformation due to an earthquake, wind, or the like, the entire eccentric brace receives an axial force in a direction in which it extends or contracts. At this time, the moment in the central portion becomes maximum, and bending deformation occurs.
【０００８】しかるに前記偏心ブレースの上下各アーム
部分間に介在する中央変形部分を構成する形鋼を一般の
鋼材より降伏点の低い鋼材からなる形鋼としたので、前
記偏心ブレースに僅かな力が加わっただけで、中央変形
部分を構成する形鋼に塑性曲げ変形が発生し、建築物が
地震等によって振動する場合、小さな変形のときから振
動エネルギーを履歴吸収エネルギーとして吸収し、振動
を低減させる。However, since the section steel constituting the central deformed portion interposed between the upper and lower arms of the eccentric brace is a section steel having a lower yield point than ordinary steel, a slight force is applied to the eccentric brace. If just added, plastic bending deformation occurs in the section steel that constitutes the central deformation part, and the building vibrates due to an earthquake or the like, the vibration energy is absorbed as hysteretic absorption energy from the time of small deformation, and the vibration is reduced. .
【０００９】以下本発明を図示の実施例について説明す
る。柱１と梁２とで構成された骨組の対角線の両端に位
置する２箇所の柱梁接合部分間にＨ形鋼より構成された
偏心ブレース３が配設されている。図１に示したよう
に、偏心ブレース３は、この偏心ブレース３の一方の端
部をなす上部アーム部分（第１アーム部分）３ａと、こ
の偏心ブレースの他方の端部をなす下部アーム部分（第
２アーム部分）３ｂと、第１端が上部アーム部分３ａに
連なるように接合され第２端が下部アーム部分３ｂに連
なるように接合された中央変形部分３ｃとで構成されて
いる。また、図１から明らかなように、偏心ブレース３
は、上部アーム部分３ａの先端部が第１連結箇所におい
て骨組に連結され、下部アーム部分３ｂの先端部が第２
連結箇所において骨組に連結され、それら第１連結箇所
と第２連結箇所とを結ぶ直線に対して中央変形部分３ｃ
が偏心しているように構成されている。上下両アーム部
分３ａ、３ｂと、中央変形部分３ｃとの間は、接合板４
及びボルト５で接合されており、これによって中央変形
部分３ｃと上部アーム部分３ａとの接合部、及び、中央
変形部分３ｃと下部アーム部分３ｂとの接合部を、脱連
結可能な接合部としている。更に、中央変形部分３ｃを
構成するＨ形鋼を、一般鋼材より降伏点の低い鋼材、例
えば極低降伏点鋼からなるＨ形鋼としている。The present invention will be described below with reference to the illustrated embodiment. An eccentric brace 3 made of H-shaped steel is disposed between two column-beam joints located at both ends of a diagonal line of a frame made up of columns 1 and beams 2. As shown in FIG. 1, the eccentric brace 3 has an upper arm portion (first arm portion) 3 a forming one end of the eccentric brace 3 and a lower arm portion (first arm portion) forming the other end of the eccentric brace 3. (A second arm portion) 3b, and a central deformed portion 3c whose first end is joined to the upper arm portion 3a and whose second end is joined to the lower arm portion 3b. Also, as is clear from FIG.
Is that the tip of the upper arm 3a is connected to the skeleton at the first connection point, and the tip of the lower arm 3b is the second
A central deformed portion 3c which is connected to the skeleton at the connection point and which is connected to a straight line connecting the first connection point and the second connection point.
Are configured to be eccentric. A joining plate 4 is provided between the upper and lower arm portions 3a and 3b and the central deformed portion 3c.
And the bolt 5 so that the joint between the central deformed portion 3c and the upper arm portion 3a and the joint between the central deformed portion 3c and the lower arm portion 3b are detachable joints. . Further, the H-shaped steel constituting the central deformed portion 3c is a steel material having a lower yield point than a general steel material, for example, an H-shaped steel made of an extremely low yield point steel.
【００１０】なお前記中央変形部分３ｃのＨ形鋼は、そ
の全部又は一部が極低降伏点鋼より構成されている。図
示の実施例は前記したように構成されているので、地震
時等に偏心ブレース３の両先端部間に圧縮力または引張
力が作用したときには、偏心ブレース３の中央部分３ｃ
は曲げモーメントが最大となって、図２に示したよう
に、極低降伏点鋼製の同中央変形部分３ｃのＨ形鋼は容
易に曲げ変形を発生し、その曲げ変形が塑性曲げ変形に
至ると履歴吸収エネルギーとして振動エネルギーを吸収
する機能を発現し、振動を低減させる。The H-shaped steel of the central deformed portion 3c is entirely or partially made of an extremely low yield point steel. Since the illustrated embodiment is configured as described above, when a compressive force or a tensile force acts between both ends of the eccentric brace 3 during an earthquake or the like, the central portion 3c of the eccentric brace 3 is used.
The bending moment is maximized, and as shown in FIG. 2, the H-shaped steel of the centrally deformed portion 3c made of extremely low yield point steel easily generates bending deformation, and the bending deformation becomes plastic bending deformation. When it reaches, the function of absorbing vibration energy as hysteresis absorption energy is exhibited, and vibration is reduced.
【００１１】前記偏心ブレース３の中央変形部分３ｃを
構成するＨ形鋼は塑性変形を繰り返し、また残留変形を
生じるが、この中央変形部分３ｃを構成するＨ形鋼は、
上下アーム部分３ａ、３ｂにボルト接合されているので
交換が容易である。図３は本発明の他の実施例を示し、
偏心ブレース３が２重に取り付けられている。図中、前
記実施例と均等部分には同一符号が付されている。The H-shaped steel forming the central deformed portion 3c of the eccentric brace 3 repeatedly undergoes plastic deformation and causes residual deformation.
Since it is bolted to the upper and lower arm portions 3a, 3b, replacement is easy. FIG. 3 shows another embodiment of the present invention,
The eccentric brace 3 is doubly mounted. In the figure, the same reference numerals are given to the same parts as those in the above embodiment.
【００１２】[0012]
【発明の効果】本発明に係る建築物の制振装置は前記し
たように、柱と梁とによって構成された骨組内に形鋼で
構成された偏心ブレースを配設し、同偏心ブレースを、
同偏心ブレースの一方の端部をなす第１アーム部分と、
同偏心ブレースの他方の端部をなす第２アーム部分と、
第１端が第１アーム部分に連なるように接合され第２端
が第２アーム部分に連なるように接合された中央変形部
分とで構成し、同偏心ブレースを、第１アーム部分の先
端部が第１連結箇所において骨組に連結され、第２アー
ム部分の先端部が第２連結箇所において骨組に連結さ
れ、それら第１連結箇所と第２連結箇所とを結ぶ直線に
対して中央変形部分が偏心しているように構成し、更
に、同偏心ブレースを、前記中央変形部分を構成する形
鋼を一般の鋼材より降伏点の低い鋼材からなる形鋼とす
ることで、同偏心ブレースの両先端部間に圧縮力または
引張力が作用したときに、中央変形部分を構成する形鋼
に塑性曲げ変形が発生するように構成したため、同偏心
ブレースの中央変形部分は僅かな力で塑性変形を生じる
ので、地震によって建築物が振動する場合、小さな変形
のときから振動エネルギーを履歴吸収エネルギーとして
吸収し、建築物の振動を低減させる。According to the vibration damping device for a building according to the present invention, as described above, the eccentric brace made of a shaped steel is disposed in a frame constituted by columns and beams, and the eccentric brace is
A first arm portion forming one end of the eccentric brace,
A second arm portion forming the other end of the eccentric brace,
The first eccentric brace comprises a first deformed brace having a first end joined to the first arm portion and a second end joined to the second arm portion. The first connecting portion is connected to the skeleton, the tip of the second arm portion is connected to the skeleton at the second connecting portion, and the central deformed portion is biased with respect to a straight line connecting the first connecting portion and the second connecting portion. The eccentric brace is further configured to have a yield point lower than that of a general steel material, and the eccentric brace is formed from a steel material having a lower yield point than a general steel material. When compressive or tensile force is applied to the steel, the plastic bending deformation occurs in the shape steel constituting the central deformed part, so the central deformed part of the eccentric brace generates plastic deformation with a small force, Built by earthquake If object vibrates to absorb vibration energy as history absorbing energy from the time of small deformation, reducing the vibration of the building.
【００１３】また、前記中央変形部分を構成する形鋼の
長さや断面、それに、前記中央変形部分の形状や偏心量
を調整することによって、偏心ブレースの降伏変位、最
大変形量の設定が容易で、大変形にも追随でき、また構
造も簡単となる。請求項２の発明では、中央変形部分と
第１アーム部分との接合部、及び、中央変形部分と第２
アーム部分との接合部を、脱連結可能な接合部とした。
中央変形部分を構成する形鋼は、塑性変形を繰り返し、
また残留変形を生じるが、取り換えの必要が生じた際に
は、容易に交換しうるものであって、例えば大地震のあ
と、必要に応じて交換すればよい。Further, by adjusting the length and cross section of the section steel constituting the central deformed portion, and the shape and the amount of eccentricity of the central deformed portion, it is easy to set the yield displacement and the maximum amount of deformation of the eccentric brace. It can follow large deformations and has a simple structure. According to the second aspect of the present invention, the joint between the central deformed portion and the first arm portion, and the central deformed portion and the second arm portion are connected to each other.
The joint with the arm portion was a detachable joint.
The shape steel that constitutes the central deformation part repeats plastic deformation,
Although residual deformation occurs, it can be easily replaced when replacement is required. For example, it may be replaced as needed after a large earthquake.
【図１】本発明に係る偏心ブレースダンパーによる建築
物の制振装置の一実施例を示す立面図である。FIG. 1 is an elevation view showing an embodiment of a building vibration damping device using an eccentric brace damper according to the present invention.
【図２】前記制振装置の変形状態を示す説明図である。FIG. 2 is an explanatory view showing a deformed state of the vibration damping device.
【図３】本発明の他の実施例を示す立面図である。FIG. 3 is an elevation view showing another embodiment of the present invention.
【図４】従来の制振装置を示す立面図である。FIG. 4 is an elevation view showing a conventional vibration damping device.
１ 柱 ２ 梁 ３ 偏心ブレース ３ａ 上部アーム部分 ３ｂ 下部アーム部分 ３ｃ 中央変形部分 ４ 接合板 ５ ボルト DESCRIPTION OF SYMBOLS 1 Column 2 Beam 3 Eccentric brace 3a Upper arm part 3b Lower arm part 3c Central deformation part 4 Joining plate 5 Bolt
Claims (2)
された偏心ブレースを配設してなる、偏心ブレースダン
パーによる建築物の制振装置において、 前記 偏心ブレースは、該偏心ブレースの一方の端部をな
す第１アーム部分と、該偏心ブレースの他方の端部をな
す第２アーム部分と、第１端が前記第１アーム部分に連
なるように接合され第２端が前記第２アーム部分に連な
るように接合された中央変形部分とで構成されており、 前記偏心ブレースは、前記第１アーム部分の先端部が第
１連結箇所において前記骨組に連結され、前記第２アー
ム部分の先端部が第２連結箇所において前記骨組に連結
され、前記第１連結箇所と前記第２連結箇所とを結ぶ直
線に対して前記中央変形部分が偏心しているように構成
されており、 前記偏心ブレースは、 前記中央変形部分を構成する形鋼
を一般の鋼材より降伏点の低い鋼材からなる形鋼とする
ことで、前記偏心ブレースの両先端部間に圧縮力または
引張力が作用したときに、前記中央変形部分を構成する
形鋼に塑性曲げ変形が発生するように構成されている、 ことを特徴とする偏心プレースダンパーによる建築物の
制振装置。1. A steel frame in a frame composed of columns and beams
Ing by arranging an eccentric brace that is, eccentrically brace Dan
In the vibration damping device of the building by par, the eccentric brace it one end of the eccentric brace
Between the first arm portion and the other end of the eccentric brace.
A second arm portion and a first end connected to the first arm portion.
And the second end is connected to the second arm portion.
The eccentric brace is configured such that a tip end of the first arm portion is a second deformed portion .
Connected to the skeleton at one connection point;
Tip of the rubber part is connected to the frame at the second connection point
And directly connecting the first connection point and the second connection point.
So that the central deformed part is eccentric to the line
Are, the eccentric brace shaped steel which constitutes the central deformed portion
And shaped steel made from less than ordinary steel of yield point steel
By doing so, a compression force or
When a tensile force is applied, it constitutes the central deformed portion
A vibration damping device for a building using an eccentric place damper , wherein a plastic bending deformation is generated in a shape steel .
との接合部、及び、前記中央変形部分と前記第２アーム
部分との接合部を、脱連結可能な接合部とすることによ
り、前記中央変形部分を構成する形鋼の交換を容易にし
たことを特徴とする請求項１記載の偏心ブレースダンパ
ーによる建築物の制振装置。2. The central deformed portion and the first arm portion.
And the central deformed portion and the second arm
By making the joint with the part a detachable joint
Ri, and facilitate the exchange of shaped steel which constitutes the previous SL in central deformed portion
The building vibration damping device using the eccentric brace damper according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00171894A JP3323623B2 (en) | 1994-01-12 | 1994-01-12 | Vibration control device for buildings using eccentric brace damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00171894A JP3323623B2 (en) | 1994-01-12 | 1994-01-12 | Vibration control device for buildings using eccentric brace damper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07207985A JPH07207985A (en) | 1995-08-08 |
| JP3323623B2 true JP3323623B2 (en) | 2002-09-09 |
Family
ID=11509352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP00171894A Expired - Fee Related JP3323623B2 (en) | 1994-01-12 | 1994-01-12 | Vibration control device for buildings using eccentric brace damper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3323623B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001073238A2 (en) * | 2000-03-29 | 2001-10-04 | The Research Foundation Of The State University Of New York At Buffalo | Highly effective seismic energy dissipation apparatus |
| CN107939133B (en) * | 2017-10-23 | 2019-08-30 | 国核电力规划设计研究院有限公司 | A kind of shearing-type eccentrically braces structure of thermal power plant bunker bay |
| CN109403493B (en) * | 2018-11-22 | 2023-07-25 | 华中科技大学 | Double-shear supporting damper system with displacement amplification and vibration reduction efficiency evaluation method |
| CN111453273B (en) * | 2020-04-01 | 2021-02-05 | 清华大学 | Transfer goods shelf with variable rigidity and locking functions |
| CN112681853A (en) * | 2020-11-30 | 2021-04-20 | 北京建筑大学 | Eccentric supporting steel frame and building |
-
1994
- 1994-01-12 JP JP00171894A patent/JP3323623B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07207985A (en) | 1995-08-08 |
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