JP2015087012A - Seismic control damper - Google Patents

Seismic control damper Download PDF

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JP2015087012A
JP2015087012A JP2014029613A JP2014029613A JP2015087012A JP 2015087012 A JP2015087012 A JP 2015087012A JP 2014029613 A JP2014029613 A JP 2014029613A JP 2014029613 A JP2014029613 A JP 2014029613A JP 2015087012 A JP2015087012 A JP 2015087012A
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steel plate
steel
spacer
steel plates
plate
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JP6313067B2 (en
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野村　武史
Takeshi Nomura
武史 野村
陽輔 川畑
Yosuke Kawabata
陽輔 川畑
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Sumitomo Riko Co Ltd
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Sumitomo Riko Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To effectively prevent buckling in excitation by enhancing buckling strength.SOLUTION: A seismic damper 1 comprises an odd number of steel plates 2, 2, ... overlapped to each other in a thickness direction in a state of being alternately deviated in a longitudinal direction, and a viscoelastic body 3 interposed at an overlapping portion of the steel plates 2, 2, ... in an adhesion state between the respective steel plates. In one end part where the viscoelastic body 3 is not interposed, a spacer 12 keeping the gap between both steel plates 2A, 2B while contacting with the steel plate 2B positioned inside the steel plate 2A, and allowing relative movement of the steel plate 2B is provided on the steel plate 2A positioned outermost.

Description

本発明は、軽量鉄骨構造等の建物のフレーム内に振動を抑えるために配設される制震ダンパーに関する。   The present invention relates to a vibration damping damper disposed in a building frame such as a lightweight steel structure to suppress vibration.

制震ダンパーは、鋼板を複数枚重ね合わせて各鋼板の間に粘弾性体を介在させてなり、建物のフレーム内にブレース状に架設される（例えば特許文献１）。これにより、地震時にはフレームの変形に伴う粘弾性体のせん断変形により、エネルギーを吸収して振動を減衰させることができる。   The damping damper is formed by superposing a plurality of steel plates and interposing a viscoelastic body between the steel plates, and is installed in a brace shape in a building frame (for example, Patent Document 1). Thereby, at the time of an earthquake, the vibration can be attenuated by absorbing energy by the shear deformation of the viscoelastic body accompanying the deformation of the frame.

特開２００５−２４０３１８号公報JP-A-2005-240318

このような制震ダンパーにおいて、軸方向の荷重を増大させるためには、鋼板や粘弾性体の厚みを大きくしたり、積層数を増やしたりすることで対応できる。これは座屈防止にも有効であるが、制震ダンパーには、構造上鋼板の間で粘弾性体が充填されない部分が生じるため、このような部分では座屈強度が低下してしまう。   In such a vibration damper, in order to increase the axial load, it is possible to increase the thickness of the steel plate or the viscoelastic body or increase the number of layers. Although this is effective in preventing buckling, the damping damper is structurally not filled with a viscoelastic body between the steel plates, and the buckling strength is reduced in such a portion.

そこで、本発明は、座屈強度を高めて加振時の座屈を有効に防止できる制震ダンパーを提供することを目的としたものである。   In view of the above, an object of the present invention is to provide a vibration damping damper that can increase buckling strength and effectively prevent buckling during vibration.

上記目的を達成するために、請求項１に記載の発明は、長手方向へ互い違いにずれた状態で厚み方向に重合される奇数枚の鋼板と、その鋼板の重合部分で各鋼板間に接着状態で介在される粘弾性体とを含んでなる制震ダンパーであって、長手方向の少なくとも一方の端部における鋼板に、厚み方向に隣接する他の鋼板に当接して両鋼板間の間隔を保持すると共に、他の鋼板の相対移動を許容するスペーサを設けたことを特徴とするものである。
請求項２に記載の発明は、請求項１の構成において、スペーサは、鋼板に一体成形されたリブであることを特徴とするものである。
請求項３に記載の発明は、請求項１又は２の構成において、鋼板は、一方の端部に取付部を一体に備え、スペーサは取付部に配置されることを特徴とするものである。
請求項４に記載の発明は、請求項１乃至３の何れかの構成において、最外に位置する鋼板は、長手方向の側縁がそれぞれ厚み方向の外側へ折曲されて一対のフランジ部を有し、最外に位置する鋼板同士がフランジ部間に跨がって固定される補強板によって連結されることを特徴とするものである。
請求項５に記載の発明は、請求項４の構成において、補強板と粘弾性体との間に隙間が設けられることを特徴とするものである。 In order to achieve the above-mentioned object, the invention according to claim 1 is an adhesion state between each steel plate at an odd number of steel plates that are polymerized in the thickness direction in a state shifted alternately in the longitudinal direction, and a superposed portion of the steel plates. A damping damper comprising a viscoelastic body interposed between the steel plate and the steel plate at at least one end in the longitudinal direction, abutting against another steel plate adjacent in the thickness direction, and maintaining a distance between the two steel plates. In addition, a spacer that allows relative movement of other steel plates is provided.
According to a second aspect of the present invention, in the configuration of the first aspect, the spacer is a rib integrally formed with the steel plate.
According to a third aspect of the present invention, in the configuration of the first or second aspect, the steel plate is integrally provided with an attachment portion at one end portion, and the spacer is disposed at the attachment portion.
According to a fourth aspect of the present invention, in the configuration according to any one of the first to third aspects, the outermost steel plate has a side edge in the longitudinal direction that is bent outward in the thickness direction to form a pair of flange portions. The outermost steel plates are connected to each other by a reinforcing plate that is fixed across the flange portions.
According to a fifth aspect of the present invention, in the configuration of the fourth aspect, a gap is provided between the reinforcing plate and the viscoelastic body.

請求項１に記載の発明によれば、スペーサによって粘弾性体がない部分の座屈強度を高めて加振時の座屈を有効に防止することができる。
請求項２に記載の発明によれば、請求項１の効果に加えて、スペーサを一体成形されたリブとしたことで、スペーサを低コストで付与可能となる。
請求項３に記載の発明によれば、請求項１又は２の効果に加えて、取付部を利用してスペーサを簡単に設けることができる。
請求項４に記載の発明によれば、請求項１乃至３の何れかの効果に加えて、補強板の採用により座屈防止効果の向上が期待できる。
請求項５に記載の発明によれば、請求項４の効果に加えて、粘弾性体に補強板が接触してせん断変形に干渉することを防止可能となる。 According to the first aspect of the present invention, it is possible to effectively prevent buckling during vibration by increasing the buckling strength of the portion where there is no viscoelastic body by the spacer.
According to the second aspect of the invention, in addition to the effect of the first aspect, the spacer can be provided at a low cost by using the integrally formed rib as the spacer.
According to invention of Claim 3, in addition to the effect of Claim 1 or 2, a spacer can be simply provided using an attachment part.
According to the invention described in claim 4, in addition to the effect of any one of claims 1 to 3, an improvement in buckling prevention effect can be expected by employing a reinforcing plate.
According to the fifth aspect of the present invention, in addition to the effect of the fourth aspect, it is possible to prevent the reinforcing plate from contacting the viscoelastic body and interfering with the shear deformation.

制震ダンパーの説明図で、（Ａ）は側面、（Ｂ）は平面をそれぞれ示す。It is explanatory drawing of a damping damper, (A) shows a side surface, (B) shows a plane, respectively. Ａ矢視図である。FIG. Ｂ−Ｂ線断面図である。It is a BB sectional view. 制震ダンパーを配設したフレームの正面図である。It is a front view of the flame | frame which arrange | positioned the damping damper. 制震ダンパーの変更例の説明図で、（Ａ）は平面、（Ｂ）は側面をそれぞれ示す。It is explanatory drawing of the example of a change of a damping damper, (A) shows a plane, (B) shows a side surface, respectively. 図５のＣ−Ｃ線端面図である。It is the CC sectional view taken on the line of FIG. 図５のＤ−Ｄ線断面図である。It is the DD sectional view taken on the line of FIG.

以下、本発明の実施の形態を図面に基づいて説明する。
図１は、制震ダンパーの一例を示す説明図で、制震ダンパー１は、所定長さの鋼板２，２・・を長手方向へ互い違いにずれた状態で厚み方向に５枚重ね合わせて、長手方向の一方に３枚の鋼板２Ａ，２Ａ・・の端部を、他方に２枚の鋼板２Ｂ，２Ｂの端部をそれぞれ突出させ、５枚の鋼板２，２・・が重合する部分で各鋼板２，２の間に粘弾性体３，３・・（ハッチング部分）を介在させて接着したものである。
このうち厚み方向の両外側の鋼板２Ａ，２Ａには、長手方向の側縁がそれぞれ厚み方向の外側へ直角に折曲されて一対のフランジ部４，４が形成されており、短手方向の両側では、図２に示すように、上下に位置する鋼板２Ａ，２Ａのフランジ部４，４間に跨がって補強板５，５が、ボルト６及びナット７によって固定されている。３枚の鋼板２Ａ，２Ａ・・の端部には、ボルト固定用の透孔８，８・・が形成されている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an explanatory view showing an example of a vibration damping damper. A vibration damping damper 1 is a stack of five steel plates 2, 2... The ends of the three steel plates 2A, 2A,... Are projected on one side in the longitudinal direction and the ends of the two steel plates 2B, 2B are projected on the other side. The viscoelastic bodies 3, 3... (Hatched portions) are interposed between the steel plates 2 and 2 and bonded together.
Of these, the steel plates 2A and 2A on both outer sides in the thickness direction have a pair of flange portions 4 and 4 formed by bending side edges in the longitudinal direction at right angles to the outer sides in the thickness direction. On both sides, as shown in FIG. 2, the reinforcing plates 5 and 5 are fixed by bolts 6 and nuts 7 across the flange portions 4 and 4 of the steel plates 2A and 2A positioned above and below. Bolt fixing through holes 8, 8,... Are formed at the ends of the three steel plates 2A, 2A,.

一方、２枚の鋼板２Ｂ，２Ｂの端部には、図３に示すように短手方向の幅が他の鋼板２Ａよりも大きくなる取付部９が形成されており、取付部９の両側縁には、フランジ部４と同様にそれぞれ厚み方向の外側へ直角に折曲される折曲部１０，１０が形成されている。この取付部９の外端寄りには、ボルト固定用の透孔１１，１１・・が形成されている。   On the other hand, the end portions of the two steel plates 2B, 2B are formed with attachment portions 9 whose width in the short direction is larger than that of the other steel plates 2A as shown in FIG. In the same manner as the flange portion 4, bent portions 10, 10 that are bent at right angles to the outside in the thickness direction are formed. Near the outer end of the mounting portion 9, through holes 11, 11,... For fixing bolts are formed.

そして、両外側の鋼板２Ａ，２Ａの端部において、当該鋼板２Ａとその内側に位置する鋼板２Ｂとの間には、スペーサ１２がそれぞれ設けられている。このスペーサ１２は、鋼板２Ａと鋼板２Ｂとの間の間隔と同じ厚みを有する矩形で樹脂製の板体で、長手方向の寸法は、フランジ部４を除く鋼板２Ａの幅と略等しくなっている。
１３は、鋼板２Ａを外側から貫通してスペーサ１２に螺合される取付ネジで、これによって各スペーサ１２は鋼板２Ａに固定され、鋼板２Ｂとの間は、互いに面方向へ摺動可能となっている。 And in the edge part of steel plate 2A, 2A of both outer sides, the spacer 12 is each provided between the said steel plate 2A and the steel plate 2B located in the inside. This spacer 12 is a rectangular resin plate having the same thickness as the distance between the steel plate 2A and the steel plate 2B, and the dimension in the longitudinal direction is substantially equal to the width of the steel plate 2A excluding the flange portion 4. .
Reference numeral 13 denotes a mounting screw that penetrates the steel plate 2A from the outside and is screwed to the spacer 12, whereby each spacer 12 is fixed to the steel plate 2A and can slide in the plane direction with the steel plate 2B. ing.

以上の如く構成された制震ダンパー１は、建物のフレーム内へブレース状に配設される。図４はその一例を示すもので、図において２０は、軽量鉄骨構造のフレームで、２１は梁や桁の横架材、２２は横架材２１，２１間に立設される柱で、制震ダンパー１では、鋼板２Ｂ，２Ｂの取付部９，９の間に延長鋼板２３の端部を差し込んでボルトで固定すると共に、鋼板２Ａ，２Ａ・・の間に一対の延長鋼板２４，２４の端部を差し込んでボルトで固定することでブレースとなる。このブレースの延長鋼板２３を右上の仕口部に設けたガセットプレート２５にボルトで固定する一方、延長鋼板２４を左下の仕口部に設けたガセットプレート２６にボルトで固定することで、フレーム面内に対角線上に配設される。   The seismic damper 1 configured as described above is arranged in a brace shape in the frame of a building. FIG. 4 shows an example. In the figure, 20 is a lightweight steel frame, 21 is a beam or girder horizontal member, 22 is a column erected between the horizontal members 21 and 21, and is controlled. In the seismic damper 1, while inserting the edge part of the extension steel plate 23 between the attachment parts 9 and 9 of the steel plates 2B and 2B and fixing with bolts, the pair of extension steel plates 24 and 24 between the steel plates 2A, 2A. It becomes a brace by inserting the end and fixing with bolts. The brace extension steel plate 23 is fixed to the gusset plate 25 provided in the upper right joint with a bolt, while the extension steel plate 24 is fixed to the gusset plate 26 provided in the lower left joint with a bolt. It is arranged diagonally inside.

よって、加振によってフレーム２０が水平方向へ変形すると、制震ダンパー１には、軸方向に圧縮力と引張力とが交互に作用して、３枚の鋼板２Ａ，２Ａ・・と２枚の鋼板２Ｂ，２Ｂとが相対変位する。これにより、粘弾性体３をせん断変形させて振動エネルギーを減衰させることができる。
ここで、粘弾性体３のない制震ダンパー１の端部では、鋼板２Ａ，２Ｂの間にスペーサ１２が設けられているので、圧縮力が加わる際に厚み方向の曲げ力に対抗でき、座屈が防止される。また、スペーサ１２があっても鋼板２Ｂとの間では摺動を許容するため、鋼板２Ａ，２Ｂの相対変位に影響を与えることはない。 Therefore, when the frame 20 is deformed in the horizontal direction by the vibration, the compression damper and the tensile force act alternately on the damping damper 1 in the axial direction, and the three steel plates 2A, 2A,. The steel plates 2B and 2B are relatively displaced. Thereby, the viscoelastic body 3 can be shear-deformed to attenuate the vibration energy.
Here, since the spacer 12 is provided between the steel plates 2A and 2B at the end of the vibration damping damper 1 without the viscoelastic body 3, it can counter the bending force in the thickness direction when a compressive force is applied, and the seat Bending is prevented. Further, even if the spacer 12 is present, sliding is allowed between the steel plate 2B and the relative displacement of the steel plates 2A and 2B is not affected.

このように、上記形態の制震ダンパー１によれば、粘弾性体３が介在されない一方の端部において、最外に位置する鋼板２Ａに、その内側の鋼板２Ｂに当接して両鋼板２Ａ，２Ｂ間の間隔を保持すると共に、鋼板２Ｂの相対移動を許容するスペーサ１２を設けたことで、粘弾性体３がない部分の座屈強度を高めて加振時の座屈を有効に防止することができる。   Thus, according to the damping damper 1 of the said form, in one edge part in which the viscoelastic body 3 is not interposed, it contacts the steel plate 2A located in the outermost, and both steel plates 2A, By providing the spacer 12 that maintains the distance between the two steel plates 2B and allows the relative movement of the steel plate 2B, the buckling strength at the portion where the viscoelastic body 3 is not present is increased to effectively prevent buckling during vibration. be able to.

特にここでは、鋼板２Ｂの一方の端部に取付部９を一体に備え、スペーサ１２を取付部９に配置しているので、取付部９を利用してスペーサ１２を簡単に設けることができる。
また、最外に位置する鋼板２Ａは、長手方向の側縁がそれぞれ厚み方向の外側へ折曲されて一対のフランジ部４，４を有し、鋼板２Ａ，２Ａ同士がフランジ部４，４間に跨がって固定される補強板５によって連結されるようにしているので、座屈防止効果の向上が期待できる。 In particular, here, the attachment portion 9 is integrally provided at one end of the steel plate 2B, and the spacer 12 is disposed on the attachment portion 9, so that the spacer 12 can be easily provided using the attachment portion 9.
Further, the outermost steel plate 2A has a pair of flange portions 4, 4 with the side edges in the longitudinal direction being bent outward in the thickness direction, and the steel plates 2A, 2A are between the flange portions 4, 4. Since it is made to be connected by the reinforcing plate 5 that is fixed over the two, an improvement in the buckling prevention effect can be expected.

なお、上記形態ではスペーサ１２は最外の鋼板２Ａに固定しているが、内側の鋼板２Ｂに固定して最外の鋼板２Ａに対して摺動させるようにしてもよい。固定方法もネジ止めに限らず、接着等の他の手段を採用して差し支えない。
また、矩形の板体に限らず、長円や多角形等の他の形状としてもよいし、一つではなく複数に分割してもよい。
さらに、鋼板は５枚に限らず、奇数枚であれば３枚でもよいし７枚以上であってもよい。フランジ部や補強板を省略することもできる。加えて、取付部も内側の鋼板に限らず、最外の鋼板に設けることもできる。 In the above embodiment, the spacer 12 is fixed to the outermost steel plate 2A, but may be fixed to the inner steel plate 2B and slid with respect to the outermost steel plate 2A. The fixing method is not limited to screwing, and other means such as adhesion may be adopted.
The shape is not limited to a rectangular plate, and may be other shapes such as an ellipse or a polygon, or may be divided into a plurality of shapes instead of one.
Furthermore, the number of steel plates is not limited to five, but may be three or seven or more as long as it is an odd number. The flange portion and the reinforcing plate can be omitted. In addition, the attachment portion can be provided not only on the inner steel plate but also on the outermost steel plate.

一方、スペーサの摺動面側の角部は、面取形状やＲ形状とするのが望ましい。このようにすれば、摺動時に鋼板の表面に対して引っ掛かりが生じることがなく、スペーサの摺動性が向上する。
そして、スペーサは別体のものを鋼板に固定する構造に限らず、鋼板自体にプレス加工等によって凸部を形成し、その凸部を鋼板に対して摺動させる構造とする、すなわち一体型のスペーサを採用することも可能である。 On the other hand, the corner of the spacer on the sliding surface side is preferably chamfered or rounded. If it does in this way, it will not be caught with respect to the surface of a steel plate at the time of sliding, and the slidability of a spacer will improve.
The spacer is not limited to a structure in which a separate member is fixed to the steel plate, and a convex portion is formed on the steel plate itself by pressing or the like, and the convex portion is slid with respect to the steel plate. It is also possible to employ a spacer.

図５は、一体型のスペーサを採用した制震ダンパーの一例を示す説明図、図６はそのＣ−Ｃ線端面図で、この制震ダンパー１Ａにおいて、鋼板２Ｂの取付部９には、スペーサとして、鋼板２Ａと鋼板２Ｂとの間隔と同じ高さで長手方向に延びる３つのリブ１４，１４・・がプレス成形されている。このリブ１４は、鋼板２Ｂの短手方向に等間隔で突設されて、粘弾性体３側の略半分をそれぞれ外側の鋼板２Ａに当接させている。
このリブ１４は、座屈強度を上げるためにできるだけ長く形成するのが望ましいが、ここでは透孔１１の形成後にリブ１４をプレス成形する工程としているため、プレス時の透孔１１の歪みを防止するために左右のリブ１４，１４を中央よりも短くして左右の透孔１１，１１との距離を確保している。 FIG. 5 is an explanatory view showing an example of a damping damper adopting an integral spacer, and FIG. 6 is an end view of the CC line. In this damping damper 1A, the mounting portion 9 of the steel plate 2B includes a spacer. As shown, three ribs 14, 14... Extending in the longitudinal direction at the same height as the distance between the steel plate 2A and the steel plate 2B are press-formed. The ribs 14 are provided at equal intervals in the short direction of the steel plate 2B so that substantially half of the viscoelastic body 3 side is in contact with the outer steel plate 2A.
The ribs 14 are desirably formed as long as possible in order to increase the buckling strength. However, since the ribs 14 are formed by press molding after the through holes 11 are formed, distortion of the through holes 11 during pressing is prevented. For this purpose, the left and right ribs 14, 14 are made shorter than the center to ensure a distance from the left and right through holes 11, 11.

また、ここでは、取付部９と反対側の端部において、厚み方向中央の鋼板２Ａにもスペーサとしてのリブ１５，１５・・がプレス成形されて、粘弾性体３側の略半分を上側に隣接する鋼板２Ｂに当接させている。従って、当該端部での粘弾性体３は、図１の場合よりも短くなって透孔８との間にリブ１５の形成スペースを確保している。
さらに、図７に示すように、鋼板２Ａのフランジ部４，４と補強板５との間でボルト６の貫通部分には、補強板５の長手方向の略全長に亘って帯状のスペーサ板１６，１６が設けられている。このスペーサ板１６により、粘弾性体３と補強板５との間に隙間を確保して、粘弾性体３に補強板５が接触してせん断変形に干渉することを防止している。 Here, at the end opposite to the attachment portion 9, ribs 15, 15,... As spacers are also press-formed on the steel plate 2A in the center in the thickness direction, so that approximately half of the viscoelastic body 3 side is on the upper side. It is made to contact | abut to the adjacent steel plate 2B. Therefore, the viscoelastic body 3 at the end portion is shorter than that in the case of FIG.
Furthermore, as shown in FIG. 7, a belt-like spacer plate 16 extends substantially along the entire length of the reinforcing plate 5 in the through portion of the bolt 6 between the flange portions 4, 4 of the steel plate 2 </ b> A and the reinforcing plate 5. , 16 are provided. The spacer plate 16 secures a gap between the viscoelastic body 3 and the reinforcing plate 5 to prevent the reinforcing plate 5 from contacting the viscoelastic body 3 and interfering with shear deformation.

よって、この制震ダンパー１Ａにおいても、鋼板２Ａ，２Ｂの間にリブ１４が設けられているので、圧縮力が加わる際に厚み方向の曲げ力に対抗でき、座屈が防止される。特にここでは、反対側の端部にもリブ１５が設けられているので、当該端部でも補強がなされて座屈防止に有効となる。勿論リブ１４，１５があっても鋼板２Ａ，２Ｂの相対変位に影響を与えることはない。
そして、スペーサを鋼板２Ａ，２Ｂに一体成形されたリブ１４，１５としたことで、スペーサを低コストで付与可能となる。 Therefore, also in this damping damper 1A, since the rib 14 is provided between the steel plates 2A and 2B, the bending force in the thickness direction can be resisted when a compressive force is applied, and buckling is prevented. In particular, here, the rib 15 is also provided at the opposite end, so that the end is also reinforced and effective in preventing buckling. Of course, the presence of the ribs 14 and 15 does not affect the relative displacement of the steel plates 2A and 2B.
And the spacer can be provided at low cost by using the ribs 14 and 15 integrally formed on the steel plates 2A and 2B.

なお、一体型スペーサの形態は上記３つのリブに限らず、数を増減したり、長手方向の長さを変えたり、複数のリブを長手方向へ断続的に形成したり、鋼板から切り起こし形成したり等、適宜変更できる。また、隣接する反対側の鋼板（ここでは２Ａ）に一体型スペーサを設けることもできる。
さらに、制震ダンパーの両端とも一体型のスペーサとする必要はなく、一端側では図１のような別体型を、他端側では図５のような一体型を採用する等、両者の組み合わせは可能である。勿論一端側にのみ一体型のスペーサを設けてもよい。
そして、粘弾性体と補強板との間の隙間の設定は、図７のようなスペーサ板を用いる場合に限らず、フランジ部と補強板との接合面の何れか一方に一体型のリブ等を形成することで隙間が生じるようにしてもよいし、補強板の内面に凹部（逃がし部）を設けて粘弾性体と非接触となるようにしてもよい。また、補強板を平板でなく、フランジ部への取付部分の間（粘弾性体との対向部分）を外側へ膨らむ凸状に折曲形成することで粘弾性体と非接触となるようにすることもできる。 The shape of the integrated spacer is not limited to the above three ribs, but the number can be increased or decreased, the length in the longitudinal direction can be changed, a plurality of ribs can be formed intermittently in the longitudinal direction, or formed by cutting and raising from a steel plate. It can be changed appropriately. Also, an integrated spacer can be provided on the adjacent opposite steel plate (here 2A).
Furthermore, both ends of the vibration damper need not be integrated spacers, and a separate type as shown in FIG. 1 is adopted at one end and an integrated type as shown in FIG. 5 is adopted at the other end. Is possible. Of course, an integral spacer may be provided only on one end side.
The setting of the gap between the viscoelastic body and the reinforcing plate is not limited to the case where the spacer plate as shown in FIG. 7 is used, but an integrated rib or the like on any one of the joint surfaces of the flange portion and the reinforcing plate. By forming the gap, a gap may be formed, or a concave portion (a relief portion) may be provided on the inner surface of the reinforcing plate so as to be in non-contact with the viscoelastic body. Further, the reinforcing plate is not a flat plate, but is formed in a convex shape that bulges outward between the attachment portions to the flange portion (opposite the viscoelastic body) so as to be in non-contact with the viscoelastic body. You can also.

その他、制震ダンパーの配設形態も、上記形態のように制震ダンパーの両端に延長鋼板を接続して配設する構造に限らず、何れか一方にのみ延長鋼板を接続して他方は直接仕口部に連結してもよい。
また、フレーム内で一方の対角線上にのみ配設する場合に限らず、フレームに十分な厚みがあれば、他方の対角線上にも制震ダンパーを配設してＸ状とすることもできるし、いわゆるＫブレース状に配設することもできる。 In addition, the arrangement form of the damping damper is not limited to the structure in which the extension steel plate is connected to both ends of the damping damper as in the above embodiment, and the extension steel plate is connected to only one of them and the other is directly You may connect with a joint part.
In addition, the present invention is not limited to the case where the frame is disposed only on one diagonal line, and if the frame has a sufficient thickness, a damping damper can be disposed on the other diagonal line to form an X shape. It can also be arranged in a so-called K-brace shape.

１，１Ａ・・制震ダンパー、２（２Ａ，２Ｂ）・・鋼板、３・・粘弾性体、４・・フランジ部、５・・補強板、９・・取付部、１２・・スペーサ、１４，１５・・リブ、１６・・スペーサ板、２０・・フレーム、２１・・横架材、２２・・柱、２３，２４・・延長鋼板。   1, 1A ... Damping damper, 2 (2A, 2B) ... Steel plate, 3 ... Viscoelastic body, 4 ... Flange part, 5 ... Reinforcement plate, 9 ... Installation part, 12 ... Spacer, 14 , 15 ··· ribs, 16 ··· spacer plates, 20 ·· frames, 21 ·· horizontal members, 22 · · pillars, 23, 24 · · extended steel plates.

Claims (5)

長手方向へ互い違いにずれた状態で厚み方向に重合される奇数枚の鋼板と、その鋼板の重合部分で各鋼板間に接着状態で介在される粘弾性体とを含んでなる制震ダンパーであって、
長手方向の少なくとも一方の端部における前記鋼板に、厚み方向に隣接する他の前記鋼板に当接して両鋼板間の間隔を保持すると共に、前記他の前記鋼板の相対移動を許容するスペーサを設けたことを特徴とする制震ダンパー。 An anti-seismic damper comprising an odd number of steel plates that are superposed in the thickness direction while being staggered in the longitudinal direction, and a viscoelastic body that is bonded between the steel plates at the superposed portion of the steel plates. And
The steel plate at at least one end in the longitudinal direction is provided with a spacer that abuts against the other steel plate adjacent in the thickness direction to maintain a distance between the two steel plates and allows relative movement of the other steel plate. Damping damper characterized by that. 前記スペーサは、前記鋼板に一体成形されたリブであることを特徴とする請求項１に記載の制震ダンパー。   The vibration control damper according to claim 1, wherein the spacer is a rib formed integrally with the steel plate. 前記鋼板は、前記一方の端部に取付部を一体に備え、前記スペーサは前記取付部に配置されることを特徴とする請求項１又は２に記載の制震ダンパー。   3. The vibration damper according to claim 1, wherein the steel plate is integrally provided with an attachment portion at the one end portion, and the spacer is disposed on the attachment portion. 最外に位置する前記鋼板は、長手方向の側縁がそれぞれ厚み方向の外側へ折曲されて一対のフランジ部を有し、前記最外に位置する前記鋼板同士が前記フランジ部間に跨がって固定される補強板によって連結されることを特徴とする請求項１乃至３の何れかに記載の制震ダンパー。   The outermost steel sheet has a pair of flange portions with side edges in the longitudinal direction bent outward in the thickness direction, and the outermost steel sheets straddle between the flange portions. The damping damper according to any one of claims 1 to 3, wherein the damping damper is connected by a reinforcing plate that is fixed by the bracket. 前記補強板と前記粘弾性体との間に隙間が設けられることを特徴とする請求項４に記載の制震ダンパー。   The seismic damper according to claim 4, wherein a gap is provided between the reinforcing plate and the viscoelastic body.
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