JP2973787B2 - Eccentric brace structure with vibration suppression function - Google Patents
Eccentric brace structure with vibration suppression functionInfo
- Publication number
- JP2973787B2 JP2973787B2 JP5216331A JP21633193A JP2973787B2 JP 2973787 B2 JP2973787 B2 JP 2973787B2 JP 5216331 A JP5216331 A JP 5216331A JP 21633193 A JP21633193 A JP 21633193A JP 2973787 B2 JP2973787 B2 JP 2973787B2
- Authority
- JP
- Japan
- Prior art keywords
- brace
- damper
- eccentric
- brace structure
- damper means
- 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 - Lifetime
Links
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- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【産業上の利用分野】本発明は、制振機能を持つ偏心ブ
レース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 eccentric brace structure having a vibration control function.
【０００２】[0002]
【従来の技術】中・高層建築物では、地震や風等の水平
力に対する抵抗要素として、ブレース構造を用いた建物
架構が広く用いられている。ところが、このブレース架
構では、層毎の剪断剛性が極めて高くなるため、建物全
体の剛性が大きくなって地震の入力が増加したり、ブレ
ース架構と併用したラーメン架構が有効に働かない等の
弊害が起ることがある。2. Description of the Related Art In middle- and high-rise buildings, a building frame using a brace structure is widely used as a resistance element against a horizontal force such as an earthquake or wind. However, in this braced frame, the shear rigidity of each layer is extremely high, so the rigidity of the entire building is increased and the input of earthquakes is increased, and adverse effects such as the ramen frame used together with the braced frame do not work effectively. May happen.
【０００３】そこで、近年では、柱・梁・ブレースの材
軸心を互いに一致させない構成として、建物に安定した
弾塑性挙動を付加することができる偏心ブレースが提案
され、かつ、実用化されるに至っている。偏心ブレース
の代表的なものとしては、図７に示すように（Ａ）のＹ
形ブレース、（Ｂ）の２連Ｙ形ブレース、（Ｃ）の改良
ハ形ブレース等があり、いずれも山形のブレース１又は
屋根形のブレース２の上端部と梁３とを垂直な束材４を
介して結合するようにしている。Therefore, in recent years, an eccentric brace capable of adding a stable elasto-plastic behavior to a building has been proposed as a structure in which the axial axes of columns, beams, and braces are not coincident with each other, and have been put to practical use. Has reached. As a representative example of the eccentric brace, as shown in FIG.
There are a shape brace, a double Y-brace (B), and an improved C-shaped brace (C). In each case, the upper end of the mountain-shaped brace 1 or the roof-shaped brace 2 and the beam 3 are vertically bundled in a bundle 4. Through the connection.
【０００４】偏心ブレース構造を用いた場合の利点とし
ては、(1) ブレース１，２自体を座屈させない、(2) 束
材４を最初に降伏させる、(3) 束材４の持つ良好な弾塑
性変形挙動で地震等のエネルギーを吸収し、主要構造部
材の損傷を最小限度に抑さえる、こと等を挙げることが
できる。The advantages of using the eccentric brace structure are as follows: (1) the braces 1 and 2 do not buckle themselves; (2) the bundle 4 is yielded first; Elasto-plastic deformation behavior absorbs energy such as earthquakes and minimizes damage to main structural members.
【０００５】この種の偏心ブレース構造としては、例え
ば、特開昭６３−６７３８２号公報に開示されたものが
ある。この偏心ブレース構造では、弾塑性変形挙動を付
与する束材の長さや断面形状及び断面積を適宜設定する
ことにより、剛性，耐力の調節を行うと共に、地震エネ
ルギーの吸収（ダンパー効果）を図っている。このた
め、前記束材に予め設定した長さ，断面形状及び断面積
によって、地震エネルギーの吸収を行う際の制振領域が
自ずと決定されてしまう。An eccentric brace structure of this type is disclosed, for example, in Japanese Patent Application Laid-Open No. 63-67382. In this eccentric brace structure, rigidity and proof stress are adjusted and seismic energy is absorbed (damper effect) by appropriately setting the length, cross-sectional shape, and cross-sectional area of the bundle material that imparts elasto-plastic deformation behavior. I have. For this reason, the vibration control region at the time of absorbing seismic energy is naturally determined by the length, cross-sectional shape, and cross-sectional area preset for the bundle material.
【０００６】また、一般のＸ形ブレース構造であって、
積極的にダンパー効果を狙ったものが実開平１−９８８
６９号公報により提案されている。即ち、このＸ形ブレ
ース構造は、ブレース交点に制振材を介装し、ブレース
の変形に伴なって生ずる剪断変形により制振材を降伏さ
せ、このときに得られる履歴減衰をダンパーとして用い
る構造となっている。しかし、このように制振材を介装
した場合にあっても、その制振領域が特定され、主に大
変形時にしかその有効性が発揮されない。Further, a general X-shaped brace structure,
The one that actively aimed at the damper effect was the actual opening 1-988
No. 69 proposes this. That is, this X-shaped brace structure has a structure in which a damping material is interposed at a brace intersection, the yielding of the damping material is caused by shear deformation caused by the deformation of the brace, and the hysteresis damping obtained at this time is used as a damper. It has become. However, even when the damping material is interposed in this way, its damping region is specified, and its effectiveness is exerted mainly only during large deformation.
【０００７】このように、建物架構内に偏心ブレースを
設置し、ブレースと梁の間に建物の塑性化に先行して降
伏するような部材を一つ又は並列に配して制振層として
使用しようという考え方は、これまで幾つか提案されて
いる。As described above, the eccentric brace is installed in the building frame, and a member which yields before the plasticization of the building is arranged between the brace and the beam, or one or more members are arranged in parallel and used as a vibration damping layer. Several ideas have been proposed so far.
【０００８】しかし、従来はブレース架構を設計する
に、大きな地震を想定して制振領域を決定していたた
め、比較的小振幅領域の制振に対してはダンパー効果が
何等作用せず、振動がそのまま建物に入力されてしまう
という課題があった。However, in the past, when designing a brace frame, the vibration control region was determined on the assumption of a large earthquake. However, there is a problem that the data is directly input to the building.
【０００９】そこで、特開平５−１００５０号公報にお
いて、束材を弾性係数や耐力の異なる数種類の部材を組
み合わせて構成することにより、小変形から大変形まで
の制振効果を期待しようという考え方が提案されてい
る。Therefore, Japanese Patent Application Laid-Open No. 5-1050 discloses a concept that a bundle material is constructed by combining several kinds of members having different elastic coefficients and proof stresses, thereby expecting a vibration damping effect from small deformation to large deformation. Proposed.
【００１０】[0010]
【発明が解決しようとする課題】しかしながら、従来の
偏心ブレース構造では、ブレースと梁の間隔を全て使用
しているため、各部材のダンパー特性に差を付けにく
く、小変形と大変形に対するダンパーの差別化が難しい
という問題があった。However, in the conventional eccentric brace structure, since all the distances between the brace and the beam are used, it is difficult to make a difference in the damper characteristics of each member, and the damper has a small deformation and a large deformation. There was a problem that differentiation was difficult.
【００１１】そこで、本発明の目的は、上記課題を解決
し、小変形と大変形に対するダンパーの差別化を容易に
して、小振幅から大振幅に至る広い範囲の振動領域にお
いてダンパー効果を発揮し、建物の制振領域を大幅に拡
大することができる制振機能を持つ偏心ブレース構造を
提供することにある。Accordingly, an object of the present invention is to solve the above-mentioned problems, to facilitate differentiation of a damper against small deformation and large deformation, and to exhibit a damper effect in a wide range of vibration from small amplitude to large amplitude. Another object of the present invention is to provide an eccentric brace structure having a vibration control function capable of greatly expanding a vibration control area of a building.
【００１２】[0012]
【課題を解決するための手段】上記目的を達成するた
め、本発明による制振機能を持つ偏心ブレース構造は、
上・下階の梁とこれら梁を上下方向に接続する柱とで区
画される空間内で、上階の梁に垂設した束材の下端部
に、下階の梁から斜め上方へ立設したブレースの上端部
を結合して、柱・梁・ブレースの材軸心を互いに一致さ
せないようにした偏心ブレース構造において、上記束材
を、小変形で早期に塑性化する第１のダンパー手段と、
大変形で塑性化する第２のダンパー手段とを並置して構
成し、上記第１のダンパー手段は、ブレースと梁との上
下方向隙間に設けられてその隙間間隔を狭く調整するた
めの剛材と、該剛材に積層して上記隙間間隔に配設され
る低降伏点鋼材とからなるものである（請求項１）。To achieve the above object, an eccentric brace structure having a vibration damping function according to the present invention comprises:
In the space defined by the upper and lower floor beams and the columns connecting these beams in the vertical direction, the lower end of the bundle suspended from the upper floor beams is erected diagonally upward from the lower floor beams. An eccentric brace structure in which the upper ends of the brace are joined so that the axes of the columns, beams, and braces do not coincide with each other, and a first damper means for plasticizing the bundle early with small deformation. ,
And configure juxtaposition and second damper means for plasticized with large deformation, the first damper means, on the brace and the beam
It is provided in the downward gap to adjust the gap
And a rigid material laminated on the rigid material and disposed at the gap.
That it is made of a low yield point steel (claim 1).
【００１３】上記第１のダンパー手段は、好ましくはブ
レースと梁との間に上下に配設した剛材と、該剛材間に
介在させた低降伏点鋼材とで構成され（請求項２）、上
記低降伏点鋼材が鉛から成る（請求項３）か、上記低降
伏点鋼材が鋼板同士を高力ボルトで連結したものから成
る（請求項４）。[0013] The first damper means is preferably composed of a rigid material vertically arranged between the brace and the beam, and a low yield point steel material interposed between the rigid materials. The low-yield-point steel material is made of lead (claim 3), or the low-yield-point steel material is made by connecting steel plates with high-strength bolts (claim 4).
【００１４】上記第２のダンパー手段は、上記ブレース
と梁との間に取り付けた低剛性高耐力の剛材により構成
される（請求項５）。[0014] The second damper means is formed of a low-rigidity, high-strength rigid material attached between the brace and the beam.
【００１５】[0015]
【作用】請求項１の第１のダンパー手段では、ブレース
と梁との上下方向隙間に設けられてその隙間間隔を狭く
調整するための剛材と、該剛材に積層して上記隙間間隔
に配設される低降伏点鋼材とからなっているため、ブレ
ースと梁との間にこれらを連結する形態でダンパを設置
する構造を前提としながらも、エネルギー吸収に寄与し
ない剛体を梁とブレースとの間に設けることによってそ
の上下方向隙間間隔の調整を可能とし、これにより梁と
ブレースとの間に設置されるエネルギー吸収材としての
低降伏点鋼材の性能を調整することができるようになっ
ている。そしてこの構成により、このブレースと梁との
上下間隔の間には、従来以上に剪断変形が集中する部分
が作られる。この剪断変形の集中度がより大きい部分
に、耐力は小さい低降伏点鋼材（例えば鉛のようなも
の）を配していて、この低降伏点鋼材の剛性は上記隙間
間隔が狭いことから高く設定できることになる。従っ
て、第１のダンパー手段は、従来よりも小変形で早期に
塑性化する。The first damper means is provided in the vertical gap between the brace and the beam to reduce the gap therebetween.
A rigid material for adjustment, and a gap between the rigid materials
Since that is of a low yield point steel which is disposed, shake
A damper is installed between the base and beam to connect them
While contributing to energy absorption,
By providing a rigid body between the beam and the brace.
The vertical gap can be adjusted, which allows
As an energy absorbing material installed between the brace
It is now possible to adjust the performance of low yield point steel
ing. With this configuration, a portion where the shear deformation is more concentrated than before is created between the vertical space between the brace and the beam. The degree of concentration is greater than the portion of the shear yield strength is not arranged small low yield point steel (e.g. lead like), the rigidity of the low yield point steel the gap
Since the interval is small, it can be set high. Therefore, the first damper means is plasticized earlier with a smaller deformation than before.
【００１６】また、この第１のダンパー手段は、大変形
で塑性化する第２のダンパー手段と組み合わされて２段
階ダンパーを構成しているため、従来よりも小振幅から
大振幅に至る広い範囲の振動領域において、ダンパー効
果を発揮し、建物の制振領域を大幅に拡大することがで
きる。Further, since the first damper means constitutes a two-stage damper in combination with the second damper means which is plasticized by large deformation, the first damper means has a wider range from a small amplitude to a large amplitude than the conventional one. In the vibration region, a damper effect is exhibited, and the vibration suppression region of the building can be greatly expanded.
【００１７】請求項２では、ブレースと梁との間に上下
に剛材を配設し、該剛材間に低降伏点鋼材を設けている
ので、簡易で実用的な構成が得られる。According to the second aspect, since a rigid material is disposed vertically between the brace and the beam, and a low-yield point steel material is provided between the rigid materials, a simple and practical configuration can be obtained.
【００１８】請求項３では、上記低降伏点鋼材に鉛を用
いているので簡易な構成が得られる。According to the third aspect, since lead is used for the low yield point steel material, a simple structure can be obtained.
【００１９】請求項４では、上記低降伏点鋼材を、鋼板
同士を高力ボルトで連結したもので構成しているので、
鉛を用いないで、所望の作用効果を得ることができる。According to the fourth aspect of the present invention, the low-yield-point steel material is formed by connecting steel plates with high-strength bolts.
The desired function and effect can be obtained without using lead.
【００２０】請求項５では、上記第２のダンパー手段
を、上記ブレースと梁との間に取り付けた低剛性高耐力
の剛材により構成しているので、簡易で実用的な構成が
得られる。According to the fifth aspect, since the second damper means is formed of a low-rigidity, high-strength rigid material attached between the brace and the beam, a simple and practical configuration can be obtained.
【００２１】[0021]
【実施例】以下、本発明の一実施例を添付図面に基づい
て説明する。図２は本実施例の偏心ブレース構造１０で
あり、図３はそれを用いた建築物の骨格を示す。An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 2 shows an eccentric brace structure 10 of the present embodiment, and FIG. 3 shows a skeleton of a building using the same.
【００２２】本実施例の偏心ブレース構造１０を適用し
た偏心ブレース１２は、図７に示した（Ａ）のＹ形ブレ
ースであって、図２及び図３に示すように偏心ブレース
１２は、下階の梁１４と直上階の梁１６との間に立設さ
れる一対の柱１８，１８間に設けられ、これら柱１８，
１８の下端から上方に向かって、一対のブレース２０，
２０を山形となるように傾斜させ、それぞれの上端部を
梁１６から下方に適宜離れた位置で接合するようになっ
ている。また、上記ブレース２０，２０の上端接合部
は、垂直に配置される束材２２を介して上記梁１６と接
合される。The eccentric brace 12 to which the eccentric brace structure 10 of this embodiment is applied is the Y-shaped brace shown in FIG. 7A, and the eccentric brace 12 is, as shown in FIGS. It is provided between a pair of pillars 18 and 18 erected between the beam 14 on the floor and the beam 16 on the floor immediately above.
18, a pair of braces 20,
20 is inclined so as to form a mountain shape, and upper ends of the respective members are joined at positions appropriately separated downward from the beams 16. The upper end joints of the braces 20, 20 are joined to the beam 16 via a vertically arranged bundle 22.
【００２３】上記束材２２は、図１に示すように、小変
形で従来以上に早期に塑性化する第１のダンパー手段３
０と、大変形で塑性化する第２のダンパー手段４０とを
有して、２段階ダンパーの形に構成されている。As shown in FIG. 1, the bundle member 22 is made of a first damper unit 3 which plasticizes earlier with a small deformation than before.
0 and a second damper means 40 for plasticizing with large deformation, and is configured in the form of a two-stage damper.
【００２４】第１のダンパー手段３０は、ブレース２０
と梁１６との間隔Ｌ内に、上下に一つ以上の厚い剛板か
ら成る剛材３１を配設して、この厚い剛板から成る剛材
３１と他の剛材との間に、より狭い間隔部分（小間隔部
分と略す）３２を形成し、この小間隔部分３２に低降伏
点鋼材３３を介在させたもので構成されている。The first damper means 30 includes the brace 20
A rigid member 31 made of one or more thick rigid plates is disposed above and below the gap L between the beam 16 and the rigid member 31 composed of the thick rigid plate and another rigid member. A narrow space portion (abbreviated as a small space portion) 32 is formed, and a steel material 33 having a low yield point is interposed in the small space portion 32.
【００２５】本実施例では、梁１６の下面に鋼材２４を
設けると共に、ブレース２０，２０の上端接合部にリン
ク部２６を設け、この鋼材２４とリンク部２６との間に
おいて上下に厚い剛板から成る剛材３１，３１を配設し
て両者間に小間隔部分３２を形成し、この小間隔部分３
２に低降伏点鋼材３３として鉛を配設している。In the present embodiment, a steel material 24 is provided on the lower surface of the beam 16 and a link portion 26 is provided at the upper end joint of the braces 20, 20, and a thick rigid plate is provided vertically between the steel material 24 and the link portion 26. Rigid members 31, 31 are disposed to form a small interval portion 32 therebetween, and the small interval portion 3 is formed.
2 is provided with lead as the low yield point steel material 33.
【００２６】次に、第２のダンパー手段４０は、上記ブ
レース２０と梁１６との間隔Ｌの間、正確には鋼材２４
とリンク部２６との間に、低剛性高耐力の鋼棒等の剛材
４１を取り付けて、その上端を剛部４２で固定し下端を
回転自在なピン支持状態で取り付けた構成となってい
る。本実施例の場合、剛材４１には鋼棒が用いられてお
り、該鋼棒４１は、上記第１のダンパー部材３０を中心
として左右対称に、即ち梁１６の延在方向に相前後して
計２本設けられている。Next, the second damper means 40 adjusts the distance between the brace 20 and the beam 16, more precisely, the steel material 24.
A rigid member 41 such as a low-rigidity, high-strength steel bar is attached between the link member 26 and the link member 26, the upper end thereof is fixed by the rigid portion 42, and the lower end is attached in a rotatable pin-supported state. . In the case of the present embodiment, a steel rod is used for the rigid member 41, and the steel rod 41 is symmetrical about the first damper member 30, that is, in the extending direction of the beam 16. There are two in total.
【００２７】上記したように、第１のダンパー手段３０
は、ブレース２０と梁１６との間隔Ｌ内に、間隔が狭い
小間隔部分３２を作って従来以上に剪断変形を集中さ
せ、この小間隔部分３２に低降伏点鋼材３３を用いるの
で、低降伏点鋼材３３はより高剛性となる。要するに、
剪断変形の集中度がより大きい部分では、第１のダンパ
ー手段３０に、剛性が高く耐力が小さい材質を選択した
関係になっている。一方、集中度がより小さい部分で
は、第２のダンパー手段４０に、第１のダンパー手段３
０よりも剛性が低く耐力が高い材質を選択した関係にな
っている。As described above, the first damper means 30
Since a small gap portion 32 having a small gap is formed in the gap L between the brace 20 and the beam 16 to concentrate the shear deformation more than before, and a low yield point steel material 33 is used for the small gap portion 32, a low yield The point steel material 33 has higher rigidity. in short,
In a portion where the degree of concentration of shear deformation is higher, the first damper means 30 is made of a material having high rigidity and low proof strength. On the other hand, in the part where the degree of concentration is smaller, the first damper means 3 is provided to the second damper means 40.
The relationship is such that a material having a lower stiffness than 0 and a high proof stress is selected.
【００２８】以上の如く構成した本実施例の偏心ブレー
ス構造１０にあっては、上記偏心ブレース１２に地震力
とか強風により横力が作用した場合、この横力を原因と
して束材２２、つまり、第１のダンパー３０及び／又は
第２のダンパー４０に剪断変形が生ずる。これにより、
剪断変形の集中する部分では小変形で第１のダンパー３
０が従来以上に早期に塑性化し、従来以上の制振効果を
得る。また剪断変形の集中度が小さい第２のダンパー４
０の部分では、大変形で塑性化し制振効果を発揮し、さ
らに構造物の耐力をも分担する。In the eccentric brace structure 10 of the present embodiment configured as described above, when a lateral force acts on the eccentric brace 12 due to seismic force or strong wind, the bundle member 22, ie, Shear deformation occurs in the first damper 30 and / or the second damper 40. This allows
In the part where the shear deformation concentrates, the first damper 3 has a small deformation.
0 plasticizes earlier than before, and a vibration damping effect higher than before is obtained. In addition, the second damper 4 having a low degree of concentration of shear deformation
In the part of 0, it plasticizes due to large deformation, exhibits a vibration damping effect, and also shares the proof stress of the structure.
【００２９】即ち、上記束材２２の弾性性能を示す履歴
特性は図４に示したように表わされ、高剛性・低耐力の
上記第１のダンパー３０の鉛は、同図中実線イで示す履
歴特性となり、低剛性・高耐力の上記第２のダンパー４
０の鋼棒４１は、同図中実線ロで示す履歴特性となる。
つまり、剛材３１によって剛性が高くなっている第１の
ダンパー３０の鉛部分３２は比較的耐力が小さく、領域
ａで示すように小振幅の振動に対して大きなダンパー効
果を発揮する一方、曲げ変形が大きく剛性の低い第２の
ダンパー４０の鋼棒４１は耐力が大きく、領域ｂで示す
ように大振幅の振動に対して大きなダンパー効果を発揮
する。That is, the hysteresis characteristic indicating the elastic performance of the bundle material 22 is represented as shown in FIG. 4, and the lead of the first damper 30 having high rigidity and low proof stress is represented by a solid line A in FIG. The second damper 4 has low hysteresis and high proof stress because of the hysteresis characteristics shown in FIG.
The steel rod 41 of 0 has the hysteresis characteristic shown by the solid line B in FIG.
In other words, the lead portion 32 of the first damper 30 whose rigidity is increased by the rigid material 31 has a relatively small proof stress, and exhibits a large damper effect against small-amplitude vibration as shown in the area a, while bending. The steel rod 41 of the second damper 40 having large deformation and low rigidity has a large proof strength, and exhibits a large damper effect against a large amplitude vibration as shown by a region b.
【００３０】上記実施例では、第１のダンパー３０にお
ける小間隔部分３２の低降伏点鋼材３３を鉛で構成し、
第２のダンパー４０の剛材４１に鋼棒を用いたが、本発
明はこれに限定されるものではない。In the above embodiment, the low yield point steel material 33 of the small interval portion 32 in the first damper 30 is made of lead,
Although a steel rod is used as the rigid material 41 of the second damper 40, the present invention is not limited to this.
【００３１】例えば、図５に示すように、第２のダンパ
ー４０の剛材４１に鋼棒ではなく小型Ｈ鋼材４３を用い
ることができる。For example, as shown in FIG. 5, a small H steel material 43 can be used for the rigid material 41 of the second damper 40 instead of a steel rod.
【００３２】また、図６（ａ）（ｂ）に示すように、第
１のダンパー３０における小間隔部分３２には、低降伏
点鋼材３３として、鉛の代りに、（ｂ）に示す如く鋼板
３４同士を高力ボルト３５で連結したものを用いること
ができ、この場合は高力ボルト３５によって生じる鋼板
３４相互の摩擦力を利用するように構成されていて、ま
た第２のダンパー４０の剛材４１に高張力鋼４４を用い
ることができる。As shown in FIGS. 6 (a) and 6 (b), the small gap portion 32 of the first damper 30 is replaced by a low yield point steel material 33 instead of lead, as shown in FIG. In this case, the frictional force between the steel plates 34 generated by the high-strength bolts 35 is used, and the rigidity of the second damper 40 is used. High tensile steel 44 can be used for the material 41.
【００３３】尚、上記各実施例にあってはＹ形ブレース
に本発明を適用した場合を示したが、これに限ることな
く、例えば、図７中（Ｂ），（Ｃ）に示したその他の偏
心ブレース構造にあっても、本発明を適用できることは
勿論である。In each of the above embodiments, the case where the present invention is applied to the Y-shaped brace is shown. However, the present invention is not limited to this, and for example, the other cases shown in FIGS. It goes without saying that the present invention can be applied to the eccentric brace structure described above.
【００３４】[0034]
【発明の効果】以上述べたように、本発明によれば、次
のような優れた効果が得られる。As described above, according to the present invention, the following excellent effects can be obtained.
【００３５】１）請求項１によれば、第２のダンパーと
並置される第１のダンパー手段を、ブレースと梁との上
下方向隙間に設けられてその隙間間隔を狭く調整するた
めの剛材と、該剛材に積層して上記隙間間隔に配設され
る低降伏点鋼材とから構成したので、ブレースと梁との
間にこれらを連結する形態でダンパを設置する構造を前
提としながらも、エネルギー吸収に寄与しない剛体を梁
とブレースとの間に設けることによってその上下方向隙
間間隔の調整を可能とし、これにより梁とブレースとの
間に設置されるエネルギー吸収材としての低降伏点鋼材
の性能を調整することができる。そしてこの構成によ
り、ブレースと梁の間に従来以上に剪断変形の集中する
部分を作り、この部分に当該隙間間隔が狭いことからそ
の剛性を高く設定することができた低降伏点鋼材を配し
ているため、第１のダンパー手段は、従来よりも小変形
で早期に塑性化することとなり、従来よりも小変形用ダ
ンパーとしての差別化が顕著となる。また、この第１の
ダンパー手段は、大変形で塑性化する第２のダンパー手
段と組み合わさせて２段階ダンパーを構成しているた
め、従来よりも小振幅から大振幅に至る広い範囲の振動
領域において、ダンパー効果を発揮し、建物の制振領域
を大幅に拡大することができる。1) According to claim 1, the second damper and
The first damper means juxtaposed above the brace and the beam
It is provided in the downward gap to adjust the gap
And a rigid material laminated on the rigid material and disposed at the gap.
And low yield point steel
The structure where the damper is installed in the form of connecting them between
A rigid body that does not contribute to energy absorption
Between the brace and the brace.
It is possible to adjust the distance between the beam and the brace.
Low yield point steel as an energy absorbing material installed in between
Performance can be adjusted. And with this configuration
Therefore, a part where the shear deformation is concentrated more than before is created between the brace and the beam, and the gap is narrower in this part,
Since the low yield point steel material which can set the rigidity of the steel is set high , the first damper means is plasticized earlier with a smaller deformation than before, and is used as a small deformation damper as compared with the related art. Is remarkable. Further, since the first damper means constitutes a two-stage damper in combination with the second damper means which is plasticized by large deformation, the vibration range in a wider range from a small amplitude to a large amplitude as compared with the prior art. In this case, a damper effect is exhibited, and the vibration damping area of the building can be greatly expanded.
【００３６】２）請求項２では、ブレースと梁との間に
上下に剛材を配設し、該剛材間に低降伏点鋼材を設けて
いるので、簡易で実用的な構成が得られる。2) According to the second aspect, since a rigid material is disposed vertically between the brace and the beam, and a low yield point steel material is provided between the rigid materials, a simple and practical configuration can be obtained. .
【００３７】３）請求項３では、上記低降伏点鋼材に鉛
を用いているので、簡易な構成で所望の作用効果が得ら
れる。3) According to the third aspect, since lead is used for the low-yield-point steel material, a desired operation and effect can be obtained with a simple configuration.
【００３８】４）請求項４では、上記低降伏点鋼材を、
鋼板同士を高力ボルトで連結したもので構成しているの
で、鉛を用いないで、所望の作用効果を得ることができ
る。4) In claim 4, the low yield point steel material is
Since the steel plates are connected by high-strength bolts, desired effects can be obtained without using lead.
【００３９】５）請求項５では、上記第２のダンパー手
段を、上記ブレースと梁との間に取り付けた低剛性高耐
力の剛材により構成しているので、簡易で実用的な構成
が得られる。(5) According to the fifth aspect, the second damper means is formed of a low-rigidity, high-strength rigid material attached between the brace and the beam, so that a simple and practical configuration is obtained. Can be
【図１】本発明の一実施例に係る偏心ブレース構造の要
部を示す図である。FIG. 1 is a view showing a main part of an eccentric brace structure according to an embodiment of the present invention.
【図２】本発明の偏心ブレース構造を示す図である。FIG. 2 is a view showing an eccentric brace structure of the present invention.
【図３】本発明の偏心ブレース構造を用いた建築物の骨
格を示す概略構成図である。FIG. 3 is a schematic configuration diagram showing a skeleton of a building using the eccentric brace structure of the present invention.
【図４】本発明に係る偏心ブレースの束材の弾塑性性状
を示す履歴特性図である。FIG. 4 is a hysteresis characteristic diagram showing the elasto-plastic properties of the bundle of the eccentric brace according to the present invention.
【図５】本発明の他の実施例に係る偏心ブレース構造の
要部を示す図である。FIG. 5 is a view showing a main part of an eccentric brace structure according to another embodiment of the present invention.
【図６】本発明の更に他の実施例に係る偏心ブレース構
造の要部を示す図である。FIG. 6 is a view showing a main part of an eccentric brace structure according to still another embodiment of the present invention.
【図７】一般的な偏心ブレース構造を示す概略図であ
る。FIG. 7 is a schematic view showing a general eccentric brace structure.
１０ 偏心ブレース構造 １２ 偏心ブレ
ース １４ 下階の梁 １６ 直上階の
梁 １８ 柱 ２０ ブレース ２４ 鋼材 ２６ リンク部 ３０ 第１のダンパー手段 ３１ 剛材 ３２ 小間隔部分 ３３ 低降伏点
鋼材 ３４ 鋼板 ３５ 高力ボル
ト ４０ 第２のダンパー手段 ４１ 低剛性高
耐力の剛材 ４２ 剛部 ４３ 小型Ｈ鋼
材 Ｌ ブレースと梁との間隔DESCRIPTION OF SYMBOLS 10 Eccentric brace structure 12 Eccentric brace 14 Lower beam 16 Beam of immediately upper floor 18 Column 20 Brace 24 Steel material 26 Link part 30 First damper means 31 Rigid material 32 Small interval portion 33 Low yield point steel material 34 Steel plate 35 High strength bolt 40 Second damper means 41 Low rigidity and high strength rigid material 42 Rigid part 43 Small H steel material L Spacing between brace and beam
フロントページの続き (56)参考文献 特開 平５−10051（ＪＰ，Ａ) 特開 平４−64675（ＪＰ，Ａ) 特開 平３−66877（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) E04H 9/02 311 E04B 1/18 Continuation of the front page (56) References JP-A-5-10051 (JP, A) JP-A-4-64675 (JP, A) JP-A-3-66877 (JP, A) (58) Fields investigated (Int) .Cl. 6 , DB name) E04H 9/02 311 E04B 1/18
Claims (5)
続する柱とで区画される空間内で、上階の梁に垂設した
束材の下端部に、下階の梁から斜め上方へ立設したブレ
ースの上端部を結合して、柱・梁・ブレースの材軸心を
互いに一致させないようにした偏心ブレース構造におい
て、 上記束材を、小変形で早期に塑性化する第１のダンパー
手段と、大変形で塑性化する第２のダンパー手段とを並
置して構成し、 上記第１のダンパー手段は、ブレースと梁との上下方向
隙間に設けられてその隙間間隔を狭く調整するための剛
材と、該剛材に積層して上記隙間間隔に配設される低降
伏点鋼材とからなることを特徴とする制振機能を持つ偏
心ブレース構造。In a space defined by upper and lower floor beams and columns connecting these beams in a vertical direction, a lower end of a bundle material suspended from an upper floor beam is connected to a lower floor beam by a lower floor beam. In the eccentric brace structure in which the upper ends of the braces erected diagonally upward are connected so that the material axes of the columns, beams and braces do not coincide with each other, a plastic deformation of the bundle material at an early stage with small deformation is performed. The first damper means and the second damper means for plasticizing by large deformation are juxtaposed, and the first damper means is arranged in the vertical direction between the brace and the beam.
Having a Tsuyoshizai for adjusting the gap spacing narrower provided in the gap, a damping function, characterized in that it consists of a low yield point steel disposed in the gap interval by laminating the rigid material Eccentric brace structure.
梁との間に上下に配設した剛材と、該剛材間に介在させ
た低降伏点鋼材とで構成したことを特徴とする請求項１
記載の制振機能を持つ偏心ブレース構造。2. The method according to claim 1, wherein said first damper means comprises a rigid material vertically disposed between a brace and a beam, and a low yield point steel material interposed between said rigid materials. Claim 1
Eccentric brace structure with the described damping function.
徴とする請求項１又は２記載の制振機能を持つ偏心ブレ
ース構造。3. The eccentric brace structure having a vibration damping function according to claim 1, wherein the low yield point steel material is made of lead.
トで連結したものから成ることを特徴とする請求項１又
は２記載の制振機能を持つ偏心ブレース構造。4. The eccentric brace structure having a vibration damping function according to claim 1, wherein the low yield point steel material is formed by connecting steel plates with high strength bolts.
スと梁との間に取り付けた低剛性高耐力の剛材により構
成したことを特徴とする請求項１〜４いずれかの項に記
載の制振機能を持つ偏心ブレース構造。5. The method according to claim 1, wherein the second damper means is made of a low-rigidity, high-strength rigid material attached between the brace and the beam. Eccentric brace structure with vibration control function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5216331A JP2973787B2 (en) | 1993-08-31 | 1993-08-31 | Eccentric brace structure with vibration suppression function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5216331A JP2973787B2 (en) | 1993-08-31 | 1993-08-31 | Eccentric brace structure with vibration suppression function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0762927A JPH0762927A (en) | 1995-03-07 |
| JP2973787B2 true JP2973787B2 (en) | 1999-11-08 |
Family
ID=16686868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5216331A Expired - Lifetime JP2973787B2 (en) | 1993-08-31 | 1993-08-31 | Eccentric brace structure with vibration suppression function |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2973787B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01247379A (en) * | 1988-03-28 | 1989-10-03 | Toshiba Corp | Device for controlling elevator |
| JP5181278B2 (en) * | 2008-04-17 | 2013-04-10 | 清水建設株式会社 | Brace damper |
| JP5286432B2 (en) * | 2012-03-21 | 2013-09-11 | 積水化学工業株式会社 | Damping device and building |
| CN108118939A (en) * | 2018-01-12 | 2018-06-05 | 郑州大学 | A kind of high-strength steel controller perturbation ductility construction |
| CN114033060B (en) * | 2021-10-29 | 2023-11-17 | 上海方寻减振科技有限公司 | Highly adaptive inclined energy dissipation structure and application |
-
1993
- 1993-08-31 JP JP5216331A patent/JP2973787B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0762927A (en) | 1995-03-07 |
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