JP4340378B2

JP4340378B2 - Damping structure

Info

Publication number: JP4340378B2
Application number: JP2000180082A
Authority: JP
Inventors: 佳伸熊川
Original assignee: Sumitomo Forestry Co Ltd
Current assignee: Sumitomo Forestry Co Ltd
Priority date: 2000-06-15
Filing date: 2000-06-15
Publication date: 2009-10-07
Anticipated expiration: 2020-06-15
Also published as: JP2002004634A

Description

【０００１】
【発明の属する技術分野】
本発明は、交差する方向に接合される一対の軸組部材の接合部に設けられる制震構造に関する。
【０００２】
【従来の技術及び発明が解決しようとする課題】
軸組部材は、建物の骨組み構造を構成する部材である。各軸組部材は交差する方向に互いに接合されて、フレームやその他の枠組を形成する。このような骨組み構造は、地震時等において建物を変形させる荷重を受ける場合には、接合部に大きな変形が生じやすい。このような変形に対処するために、接合部を剛接合として変形を抑えることが考えられるが、特に木造建物においては、仕口による接合部を剛接合とすることが困難である。
【０００３】
一方、変形し易い接合部の構造を利用したものとして、当該接合部にダンパーを取り付けることによって所定の剛性と減衰性を付与し、地震時の振動力を建物全体に分散させると共に建物の構造減衰を増加さることにより、耐震性能を向上させた制震構造が採用されている。
【０００４】
かかる制震構造に用いられるダンパーとして、三角形形状をしたプレート部材とプレート部材との間に粘弾性体を挟み込んでなる粘弾性ダンパーが知られている。この粘弾性ダンパーによれば、三角形形状の角部を一対の軸組部材による接合部の角部に配置しつつ当該接合部に取り付けられ、粘弾性体をせん断変形させることにより、地震荷重や風荷重による大振幅から小振幅までの振動エネルギーを安定して吸収することが可能になる。
【０００５】
しかしながら、軸組部材の接合部の角部付近には柱脚金物や筋交い金物等の各種の金物が取り付けられる場合が多いため、従来の粘弾性ダンパーを用いた制震構造によれば、これらの金物との干渉を避けるための工夫が必要であった。また、粘弾性ダンパーは高価な部材であることから、安価で効率良く耐震性能を向上させる制震構造の開発が望まれていた。
【０００６】
本発明は、これらの従来の課題に着目してなされたもので、各種の金物との干渉を避けつつ接合部に容易に設けることができると共に、安価で効率良く耐震性能を向上させることのできる制震構造を提供することを目的とするものである。
【０００７】
【課題を解決するための手段】
本発明者は、三角形形状をした粘弾性ダンパーを、これの角部を一対の軸組部材による接合部の角部に配置しつつ当該接合部に設置した場合、粘弾性ダンパーの角部に近い部分は、耐震性能に有効に寄与していないことを知見した。
【０００８】
本発明は、このような知見に基づいてなされたもので、交差する方向に接合される一対の軸組部材の接合部に設けられる制震構造であって、粘弾性材料を挟み込んで重ね合わせた複数枚のプレート部材を、前記接合部の角部に近接する部位において、前記角部を挟んだ前記一対の軸組部材の内側側面に各々片持ち状態で互い違いに固定することにより構成され、かつ前記複数枚のプレート部材は、各々、角部側の縁部が角部側に屈曲又は湾曲した平面形状を有する帯状重ね合わせプレート部と、該帯状重ね合わせプレート部の一端部を垂直に折り曲げることにより形成されると共に固定孔が設けられた固定プレート部とからなり、各プレート部材は、前記帯状重ね合わせプレート部の角部側の縁部を角部側に屈曲又は湾曲させた片持ち状態で、前記固定プレート部を前記角部から離して前記一対の軸組部材の内側側面に固定して取り付けられていることにより、前記複数枚のプレート部材の重ね合わせ部と前記角部との間に開口が形成されていること特徴とする制震構造を提供することにより、上記目的を達成したものである（請求項１記載の発明）。
【０００９】
本発明の制震構造は、粘弾性材料を挟み込んで重ね合わせた一対のプレート部材を、前記接合部の角部に近接する部位において、前記一対の軸組部材に各々片持ち状態で固定することにより構成されることが好ましい（請求項２記載の発明）。
【００１１】
本発明の制震構造は、前記固定孔の周囲を囲む環状突起を前記固定プレート部の外側面に突出させて形成することが好ましい（請求項４記載の発明）。
【００１２】
ここで、上記記載におけるプレート部材は、例えばステンレス等による鋼板プレートや、樹脂プレート等からなるものである。
【００１３】
【発明の実施の形態】
本発明の好ましい実施形態を添付図面を参照しつつ詳細に説明する。本実施形態の制震構造１０は、図１に示すように、例えば木造建物において、軸組部材である上梁１１、下梁１２及び柱１３によって構成される４角形状のフレーム構造１４の耐震性能を向上させるべく採用されたものである。上梁１１、下梁１２及び柱１３は、各々矩形断面を有する角材であって、柱１３の上下の両端面を上梁１１又は下梁１２の下面又は上面に当接させた状態で、互いに垂直に交差する方向に接合することによって、４角形状の骨組であるフレーム構造１４が形成される。本実施形態の制震構造１０は、フレーム構造１４の４隅に位置する軸組部材１１，１２，１３の接合部２１に後述する制震装置１５を設置することにより構成される。
【００１４】
本実施形態によれば、図２及び図３に示すように、制震装置１５は、粘弾性材料１６を挟み込みんで重ね合わせた一対の鋼製プレート部材１７からなり、各鋼製プレート部材１７は、屈曲した平面形状を有する帯状重ね合わせプレート部１８と、帯状重ね合わせプレート部１８の一端部を垂直に折り曲げることにより形成されると共に、複数の固定孔１９が設けられた固定プレート部２０とからなる。
【００１５】
そして、粘弾性材料１６を挟み込んで重ね合わせた一対の鋼製プレート部材１７を、例えば上梁１１と柱１３との接合部２１の角部２２に近接する部位において、角部２２を挟んだ上梁１１の内側側面２３と柱１３の内側側面２４に各々片持ち状態で互い違いに固定することによって、本実施形態の制震構造１０が構成される。また、本実施形態の制震構造１０によれば、一対の鋼製プレート部材１７は、角部２２から離れて固定されていることにより、一対の鋼製プレート部材１７の重ね合わせ部２５と角部２２との間には開口２６が形成される。
【００１６】
一対の鋼製プレート部材１７は、対称な同一形状を有し、厚さ２〜１０ｍｍ程度の例えばステンレスプレートを加工して形成される。各鋼製プレート部材１７の帯状重ね合わせプレート部１８は、先端側の略３／４の部分が４５度の角度で屈曲した帯状プレートであって、その屈曲部分は幅１００〜１０００ｍｍ程度の帯状の重ね合わせ部２５を構成する。各鋼製プレート部材１７の固定プレート部２０は、帯状重ね合わせプレート部１８の基端部を２５〜３００ｍｍの幅で垂直に折り曲げることにより、基端部に沿って１００〜１０００ｍｍの長さで形成される。固定プレート部２０には、その中央部に例えばラグスクリュー２７等の固定用金具を打ち込んで固定するための固定孔１９が３箇所に形成されている。
【００１７】
また、本実施形態によれば、固定孔１９の周囲を囲む環状突起２９が固定プレート部２０の外側面に突出して形成されている（図３参照）。さらに、本実施形態によれば、固定プレート部２０の側縁部と帯状重ね合わせプレート部１８の側縁部とを接続するようにして、直角三角形状の補強リブ２８が、帯状重ね合わせプレート部１８の基端部の両側に一体として設けられている。この補強リブ２８によって、垂直に折れ曲がった状態の固定プレート部２０を強固に支持して地震時における振動力を軸組部材１１，１３から制震装置１５に一層スムースに伝達させることが可能になり、また作用する方向に対して垂直な方向に制震装置１５が振動するのを効果的に防止することが可能になる。
【００１８】
一対の鋼製プレート部材１７に挟まれる粘弾性材料１６は、例えば粘弾性ゴムやアクリル系等の高分子材料による粘弾性体からなる。粘弾性材料１６は、例えば１〜１０ｍｍ程度の厚さで、両面を各鋼製プレート部材１７に密着接合させた状態で挟み込まれ、一対の鋼製プレート部材１７のせん断方向のズレに応じてせん断変形することにより、地震荷重や風荷重等による振動エネルギーを効果的に吸収する。
【００１９】
上述の構成を有する制震装置１５は、工場で予め製造され、建設現場に搬入して、例えば上梁１１と柱１３との接合部２１に設置される。すなわち、角部２２に近接する部位において、角部２２を挟んだ上梁１１の内側側面２３と柱１３の内側側面２４に対して、固定プレート部２０の先端縁部が例えば各内側側面２３，２４の中心線に沿うように位置決めしつつ、一対の鋼製プレート部材１７を各々片持ち状態で上梁１１と柱１３に固定する。かかる固定作業は、位置決めした後、固定プレート部２０の外側面に突出する環状突起２９を上梁１１や柱１３の内側側面２３，２４に食い込ませつつ、ラグスクリュー２７をねじ込むようにして固定孔１９に打ち込むことにより行われる。これにより鋼製プレート部材１７は位置ズレを生じることなく各々強固に固定されて、本実施形態の制震構造１０が設けられることになる。
【００２０】
本実施形態の制震構造１０によれば、一対の鋼製プレート部材１７の各帯状重ね合わせプレート部１８は４５度の角度で角部２２側に屈曲するものであり、固定プレート部２０は、上梁１１や柱１３の内側側面２３，２４において角部２２から例えば１００〜４００ｍｍ離れて固定される。これによって、一対の鋼製プレート部材１７の重ね合わせ部２５と角部２２との間には相当の大きさの開口２６が形成されることになり、この開口２６には、例えば筋交い金物３０等の各種の金物を制震装置１５と干渉させることなく取り付けることが可能になる。
【００２１】
また、本実施形態の制震構造１０によれば、地震荷重や風荷重による振動力を受けた場合に、一対の鋼製プレート部材１７がズレるのに伴って粘弾性材料１６がせん断変形することにより、エネルギーを効果的に吸収すると共にこれらの荷重を建物全体に分散させる。ここで、一対の鋼製プレート部材１７の重ね合わせ部２５と角部２２との間には相当の大きさの開口２６が形成されているが、角部２２に近い部分においては、粘弾性材料１６を挟み込んだ重ね合わせ部２５を配置しても、この部分は耐震性能に有効に寄与しないことから、この部分を開口２６としても、効率良く耐震性能を向上させることが可能である。したがって、本実施形態によれば、角部２２に近い部分を開口２６とすることにより、粘弾性材料１６の使用面積、及び鋼製プレート部材１７を構成するプレートの使用量を少なくして施工コストを低減できると共に、制震装置１５の軽量化によって施工性を向上させることも可能になる。
【００２２】
すなわち、本実施形態の制震構造１０によれば、各種の金物３０との干渉を避けつつ接合部２１に容易に設けることができると共に、安価で効率良く耐震性能を向上させることができる。
【００２３】
なお、本発明は上記実施形態に限定されることなく種々の変更が可能である。例えば、本発明の制震構造は、図４に示すように３枚又は４枚のプレート部材３１を粘弾性材料３２を挟み込みつつ重ね合わせて構成することもできる。また、図５（ａ），（ｂ）に示すように、プレート部材３３，３４の帯状重ね合わせプレート部３５，３６の平面形状を、例えば角部３７を中心として円弧状に湾曲する形状としたり（（ａ））、直角に屈曲する形状（（ｂ））とすることもできる。円弧状に湾曲する形状とすることによって、振動力に対して特に効率の良い制震構造とすることが可能になる。直角に屈曲する形状とすることにより、プレート部材の製造を効率良く行うことが可能になる。さらに、本発明の制震構造及び制震装置は、梁と柱の接合部だけでなく、その他の軸組部材の接合部に設けることもできる。さらにまた、本発明は木造建物の軸組部材に限定されることなく鋼製の軸組部材等に対しても採用することができる。
【００２４】
【発明の効果】
以上詳細に説明したように、本発明の制震構造によれば、各種の金物との干渉を避けつつ接合部に容易に設けることができると共に、安価で効率良く耐震性能を向上させることができる。
【図面の簡単な説明】
【図１】本発明の一実施形態に係る制震構造が設けられる軸組部材の接合部を説明する正面図である。
【図２】本発明の一実施形態に係る制震構造の構成を示す正面図である。
【図３】本発明の一実施形態に係る制震構造の構成を示す斜視図である。
【図４】３枚のプレート部材を重ね合わせて構成した制震装置の略示断面図である。
【図５】（ａ）及び（ｂ）は、帯状重ね合わせプレート部の他の形状を示す説明図である。
【符号の説明】
１０制震構造
１１上梁（軸組部材）
１２下梁（軸組部材）
１３柱（軸組部材）
１４フレーム構造
１５制震装置
１６粘弾性材料
１７鋼製プレート部材（プレート部材）
１８帯状重ね合わせプレート部
１９固定孔
２０固定プレート部
２１接合部
２２角部
２３上梁の内側側面
２４柱の内側側面
２５重ね合わせ部
２６開口
２７ラグスクリュー
２８補強リブ
２９環状突起
３０筋交い金物[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vibration control structure provided at the junction of a pair of framing members to be joined in a direction intersecting.
[0002]
[Prior art and problems to be solved by the invention]
The shaft member is a member constituting a framework structure of a building. The shaft members are joined to each other in the intersecting direction to form a frame or other frame. Such a frame structure is likely to be greatly deformed at the joint when receiving a load that deforms the building during an earthquake or the like. In order to cope with such deformation, it is conceivable to suppress the deformation by using a joint as a rigid joint. However, particularly in a wooden building, it is difficult to make the joint by a joint a rigid joint.
[0003]
On the other hand, it is assumed that the structure of the joint part that is easily deformed is used, and a damper is attached to the joint part to give a predetermined rigidity and damping property, and the vibration force at the time of earthquake is distributed throughout the building and the structure of the building is attenuated. A seismic control structure with improved seismic performance has been adopted.
[0004]
As a damper used in such a vibration control structure, a viscoelastic damper is known in which a viscoelastic body is sandwiched between a triangular plate member and a plate member. According to this viscoelastic damper, a triangular corner portion is attached to a joint portion of a pair of shaft assembly members while being attached to the joint portion, and the viscoelastic body is subjected to shear deformation so that an earthquake load or wind Vibration energy from a large amplitude to a small amplitude due to a load can be stably absorbed.
[0005]
However, since various hardware such as column base hardware and bracing hardware are often attached near the corner of the joint of the shaft assembly member, according to the vibration control structure using a conventional viscoelastic damper, these A device to avoid interference with hardware was necessary. In addition, since the viscoelastic damper is an expensive member, it has been desired to develop a seismic control structure that improves the seismic performance efficiently at low cost.
[0006]
The present invention has been made paying attention to these conventional problems, and can be easily provided at the joint while avoiding interference with various hardware, and can improve the seismic performance efficiently at low cost. The purpose is to provide a damping structure.
[0007]
[Means for Solving the Problems]
When this inventor arrange | positions the triangular-shaped viscoelastic damper in the said junction part, arrange | positioning the corner | angular part of this in the corner | angular part of a pair of shaft assembly members, it is close to the corner | angular part of a viscoelastic damper The part found that it did not contribute effectively to seismic performance.
[0008]
The present invention has been made based on such knowledge, and is a vibration control structure provided at a joint portion of a pair of shaft assembly members that are joined in an intersecting direction, with a viscoelastic material sandwiched therebetween. A plurality of plate members are configured to be alternately fixed in a cantilevered state to the inner side surfaces of the pair of shaft assembly members sandwiching the corner portions at portions close to the corner portions of the joint portions, and Each of the plurality of plate members has a band-shaped overlapping plate portion having a planar shape in which an edge portion on a corner portion side is bent or curved toward a corner portion, and one end portion of the band-shaped overlapping plate portion is bent vertically. consists of a stationary plate portion fixing hole is provided with formed by each plate member is a cantilever state that is bent or curved edges of the corner side of the plate portion on the corner side was the strip superimposed The fixed plate portion is spaced from the corner portion and fixed to the inner side surface of the pair of shaft assembly members, thereby opening between the overlapping portions of the plurality of plate members and the corner portion. The above-mentioned object is achieved by providing a vibration control structure characterized in that the structure is formed (the invention according to claim 1).
[0009]
In the vibration control structure of the present invention, the pair of plate members sandwiched and laminated with the viscoelastic material are fixed to the pair of shaft members in a cantilevered state at a portion close to the corner of the joint portion. (Invention of claim 2) is preferable.
[0011]
Preferably, the vibration control structure of the present invention is formed by projecting an annular projection surrounding the periphery of the fixed hole on the outer surface of the fixed plate portion (the invention according to claim 4).
[0012]
Here, the plate member in the above description is made of, for example, a steel plate made of stainless steel, a resin plate, or the like.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. As shown in FIG. 1, the seismic control structure 10 of the present embodiment is an earthquake resistance of a rectangular frame structure 14 composed of an upper beam 11, a lower beam 12, and a column 13 that are frame members, for example, in a wooden building. It was adopted to improve performance. The upper beam 11, the lower beam 12, and the column 13 are each a square member having a rectangular cross section, and the upper and lower end surfaces of the column 13 are in contact with the lower surface or the upper surface of the upper beam 11 or the lower beam 12. By joining in a direction that intersects perpendicularly, a frame structure 14 that is a quadrangular frame is formed. The vibration control structure 10 of the present embodiment is configured by installing a vibration control device 15 described later at the joints 21 of the shaft members 11, 12, 13 located at the four corners of the frame structure 14.
[0014]
According to the present embodiment, as shown in FIGS. 2 and 3, the vibration control device 15 is composed of a pair of steel plate members 17 sandwiched and sandwiched with a viscoelastic material 16. A belt-shaped overlapping plate portion 18 having a bent planar shape, and a fixing plate portion 20 formed by vertically bending one end of the belt-shaped overlapping plate portion 18 and provided with a plurality of fixing holes 19. Become.
[0015]
Then, a pair of steel plate members 17 that are stacked with the viscoelastic material 16 interposed therebetween, for example, at a portion close to the corner portion 22 of the joint portion 21 between the upper beam 11 and the column 13, The damping structure 10 of the present embodiment is configured by alternately fixing the inner side surface 23 of the beam 11 and the inner side surface 24 of the column 13 in a cantilever state. In addition, according to the vibration control structure 10 of the present embodiment, the pair of steel plate members 17 are fixed apart from the corner portions 22, so that the overlapping portions 25 and the corners of the pair of steel plate members 17 are square. An opening 26 is formed between the portions 22.
[0016]
The pair of steel plate members 17 have the same symmetrical shape and are formed by processing, for example, a stainless plate having a thickness of about 2 to 10 mm. The strip-like overlapping plate portion 18 of each steel plate member 17 is a strip-like plate in which a substantially ¾ portion on the tip side is bent at an angle of 45 degrees, and the bent portion is a strip-like plate having a width of about 100 to 1000 mm. The overlapping unit 25 is configured. The fixed plate portion 20 of each steel plate member 17 is formed with a length of 100 to 1000 mm along the base end portion by vertically bending the base end portion of the band-shaped overlapping plate portion 18 with a width of 25 to 300 mm. Is done. The fixing plate portion 20 is formed with fixing holes 19 at three locations for fixing a fixing metal fitting such as a lag screw 27 at the center thereof.
[0017]
Moreover, according to this embodiment, the annular protrusion 29 surrounding the periphery of the fixing hole 19 is formed so as to protrude from the outer surface of the fixing plate portion 20 (see FIG. 3). Furthermore, according to this embodiment, the reinforcing ribs 28 having a right triangle shape are connected to the side edge of the fixed plate portion 20 and the side edge of the belt-like overlap plate portion 18 so that the belt-like overlap plate portion is connected. 18 are integrally provided on both sides of the base end portion. This reinforcing rib 28 firmly supports the fixed plate portion 20 in a state of being bent vertically, so that the vibration force during an earthquake can be transmitted more smoothly from the shaft assembly members 11 and 13 to the vibration control device 15. In addition, it is possible to effectively prevent the vibration control device 15 from vibrating in a direction perpendicular to the acting direction.
[0018]
The viscoelastic material 16 sandwiched between the pair of steel plate members 17 is made of a viscoelastic body made of a polymer material such as viscoelastic rubber or acrylic. The viscoelastic material 16 has a thickness of, for example, about 1 to 10 mm and is sandwiched between both surfaces of the steel plate members 17 so as to be sheared according to the shear direction deviation of the pair of steel plate members 17. By deforming, it effectively absorbs vibration energy due to seismic load or wind load.
[0019]
The vibration control device 15 having the above-described configuration is manufactured in advance at a factory, is carried into a construction site, and is installed at, for example, a joint portion 21 between the upper beam 11 and the column 13. That is, at a portion close to the corner 22, the front edge of the fixed plate portion 20 is, for example, the inner side 23, with respect to the inner side 23 of the upper beam 11 and the inner side 24 of the column 13 sandwiching the corner 22. The pair of steel plate members 17 are fixed to the upper beam 11 and the column 13 in a cantilevered state while being positioned along the center line of 24. In this fixing operation, after positioning, the lug screw 27 is screwed into the fixing hole while the annular protrusion 29 protruding to the outer side surface of the fixing plate portion 20 is biting into the inner side surfaces 23 and 24 of the upper beam 11 and the column 13. This is done by typing 19. Thereby, each steel plate member 17 is firmly fixed without causing a positional shift, and the vibration control structure 10 of the present embodiment is provided.
[0020]
According to the vibration control structure 10 of the present embodiment, each band-like overlapping plate portion 18 of the pair of steel plate members 17 is bent toward the corner portion 22 at an angle of 45 degrees, and the fixed plate portion 20 is The inner side surfaces 23 and 24 of the upper beam 11 and the column 13 are fixed away from the corner 22 by, for example, 100 to 400 mm. Accordingly, an opening 26 having a considerable size is formed between the overlapping portion 25 and the corner portion 22 of the pair of steel plate members 17. The opening 26 has, for example, a brace 30 or the like. These various hardware can be attached without interfering with the vibration control device 15.
[0021]
Further, according to the vibration control structure 10 of the present embodiment, the viscoelastic material 16 undergoes shear deformation as the pair of steel plate members 17 are displaced when receiving a vibration force due to an earthquake load or a wind load. Effectively absorbs energy and distributes these loads throughout the building. Here, an opening 26 having a considerable size is formed between the overlapping portion 25 and the corner portion 22 of the pair of steel plate members 17, but in a portion close to the corner portion 22, a viscoelastic material is formed. Even if the overlapping portion 25 sandwiching 16 is disposed, this portion does not contribute to the seismic performance effectively. Therefore, even if this portion is used as the opening 26, the seismic performance can be improved efficiently. Therefore, according to the present embodiment, the opening 26 is a portion close to the corner 22, thereby reducing the usage area of the viscoelastic material 16 and the usage amount of the plate constituting the steel plate member 17. It is also possible to improve the workability by reducing the weight of the vibration control device 15.
[0022]
That is, according to the seismic control structure 10 of the present embodiment, the seismic performance can be easily provided at the joint 21 while avoiding interference with various hardware 30 and the seismic performance can be improved efficiently at low cost.
[0023]
The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, as shown in FIG. 4, the vibration control structure of the present invention can be configured by stacking three or four plate members 31 while sandwiching the viscoelastic material 32. Further, as shown in FIGS. 5A and 5B, the planar shape of the strip-like overlapping plate portions 35 and 36 of the plate members 33 and 34 is, for example, a shape that is curved in an arc shape around the corner portion 37. ((A)), a shape bent at right angles ((b)) can also be used. By making the shape curved in an arc shape, it is possible to provide a vibration control structure that is particularly efficient with respect to vibration force. By making the shape bent at a right angle, the plate member can be manufactured efficiently. Furthermore, the vibration control structure and the vibration control device of the present invention can be provided not only at the joint between the beam and the column but also at the joint between other shaft members. Furthermore, the present invention is not limited to the shaft member of a wooden building, but can be applied to a steel shaft member or the like.
[0024]
【The invention's effect】
As described above in detail, according to the vibration control structure of the present invention, it is possible to easily provide the joint portion while avoiding interference with various hardware, and it is possible to efficiently improve the earthquake resistance performance at a low cost. .
[Brief description of the drawings]
FIG. 1 is a front view illustrating a joint portion of a shaft member provided with a vibration control structure according to an embodiment of the present invention.
FIG. 2 is a front view showing a configuration of a vibration control structure according to an embodiment of the present invention.
FIG. 3 is a perspective view showing a configuration of a vibration control structure according to an embodiment of the present invention.
FIG. 4 is a schematic cross-sectional view of a vibration control device constructed by superposing three plate members.
FIGS. 5A and 5B are explanatory views showing other shapes of the belt-like overlapping plate portion. FIG.
[Explanation of symbols]
10 Damping structure 11 Upper beam (shaft member)
12 Lower beam (shaft member)
13 Pillar (shaft assembly member)
14 Frame structure 15 Damping device 16 Viscoelastic material 17 Steel plate member (plate member)
18 Band-shaped overlapping plate portion 19 Fixing hole 20 Fixing plate portion 21 Joint portion 22 Corner portion 23 Inner side surface 24 of upper beam 24 Inner side surface 25 Column overlapping portion 26 Opening 27 Lag screw 28 Reinforcement rib 29 Annular projection 30 Bracing

Claims

A vibration control structure provided at a joint part of a pair of shaft assembly members joined in a crossing direction, and a plurality of plate members sandwiched and sandwiched with viscoelastic materials are brought close to the corner part of the joint part In the region, each of the plate members is configured to be alternately fixed to the inner side surfaces of the pair of shaft assembly members sandwiching the corner portions in a cantilever state, and each of the plurality of plate members is an edge portion on the corner portion side. Is formed by bending one end of the belt-like overlapping plate portion vertically and having a fixing hole, and a fixing plate portion provided with a fixing hole. becomes, the plate members, the edge portion of the corner side of the strip overlapping the plate portion in a cantilever state that is bent or curved in the corner portion side, the pair of the fixing plate portion away from the corner By fixedly attached to the inner side surface of the set member, vibration control structure, wherein the opening is formed between said plurality of plates superposed section of members the corner.

The pair of plate members sandwiched and laminated with a viscoelastic material are fixed to the pair of shaft assembly members in a cantilevered state at a portion close to a corner of the joint portion. Seismic control structure.

The vibration control structure according to claim 1 or 2, wherein a brace fitting is attached to an opening formed between the overlapping portion and the corner portion of the plurality of plate members .

The damping structure according to any one of claims 1 to 3, wherein an annular protrusion surrounding the periphery of the fixing hole is formed to protrude from the outer surface of the fixing plate portion.

Reinforcing ribs that connect the side edge of the fixed plate portion and the side edge of the belt-like overlapping plate portion are integrally provided on both sides of the base end portion of the belt-like overlapping plate portion. The damping structure in any one of Claims 1-4 .