JP2668436B2 - Dynamic vibration absorber - Google Patents
Dynamic vibration absorberInfo
- Publication number
- JP2668436B2 JP2668436B2 JP1077865A JP7786589A JP2668436B2 JP 2668436 B2 JP2668436 B2 JP 2668436B2 JP 1077865 A JP1077865 A JP 1077865A JP 7786589 A JP7786589 A JP 7786589A JP 2668436 B2 JP2668436 B2 JP 2668436B2
- Authority
- JP
- Japan
- Prior art keywords
- spherical surface
- mass body
- column
- dynamic vibration
- convex spherical
- 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
- Vibration Prevention Devices (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Description
【発明の詳細な説明】 イ．発明の目的 〔産業上の利用分野〕 この発明は、地震・風等の外的強制力を受けて振動す
る構造物における振動の減衰を増加させる制振装置、い
わゆる動吸振装置に関し、特には、横方向振動の卓越す
る建築物に適用される動吸振装置に関する。DETAILED DESCRIPTION OF THE INVENTION Object of the Invention [Industrial application field] The present invention relates to a vibration damping device that increases the damping of vibration in a structure that vibrates under external forcing such as earthquakes and winds, that is, a so-called dynamic vibration absorbing device, The present invention relates to a dynamic vibration absorbing device applied to a building having a superior lateral vibration.
この種の動吸振装置として、特開昭63−114774号公報
には、積層ゴム体により質量体を支えかつ側方に周期微
調整用のばねを配してなる構成のものが開示されてい
る。該公知技術は、この構成により、全方向への振動に
対応でき、かつ、積層ゴム体の横変形特性により、感度
のよい制振作用が発揮できるとともに、共振周期特性を
積層ゴム体によってかなりの程度自由に設定できるとい
うものである。As this kind of dynamic vibration absorbing device, Japanese Patent Application Laid-Open No. 63-114774 discloses a structure in which a mass is supported by a laminated rubber body and a spring for finely adjusting a period is arranged on a side. . According to this known technique, this configuration can cope with vibrations in all directions, and can exert a sensitive vibration damping action by the lateral deformation characteristics of the laminated rubber body, and considerably increase the resonance cycle characteristic by the laminated rubber body. It can be freely set.
しかしながら、更に振動に対する応答性を高めるため
丈高を高くしようとすると、座屈を引き起こし易くなる
とともに上下動変位も現れ、このため感度はある程度以
上には高まらない傾向がある。更に、基本的な共振周期
特性を積層ゴム体の特性によって決めるとはいえ、上記
の制約等から、周期微調整用のばねに頼らざるを得ず、
結局のところ周期特性の設定が容易でない。However, if the height is increased in order to further increase the response to vibration, buckling is likely to occur, and vertical movement displacement also appears, so that the sensitivity does not tend to increase to a certain degree. Further, although the basic resonance cycle characteristic is determined by the characteristics of the laminated rubber body, due to the above restrictions, the spring for fine adjustment of the cycle cannot but be resorted to,
After all, it is not easy to set the periodic characteristics.
本発明は上述した実情に鑑み、この種の横方向に振動
する構造物に設置される動吸振装置において、全方向へ
の変位に対して適用され、かつ、構造物の固有周期に容
易かつ自由に対応できるとともに更に感度のよい動吸振
装置を得ることを目的とする。In view of the above-mentioned circumstances, the present invention is applied to a dynamic vibration absorber installed in a structure that vibrates in a lateral direction of this type in all directions, and easily and freely adjusts the natural period of the structure. It is an object of the present invention to obtain a dynamic vibration absorber having higher sensitivity and higher sensitivity.
ロ．発明の構成 〔問題点を解決するための手段〕 本発明は上述した目的を達成するべく、以下の技術手
段（構成）を採る。すなわち、水平方向に振動する構造
物に設置される動吸振装置であって、下端面が構造物の
平面状の床面に接する大径の凸球面に形成され、上端面
は小径の凸球面または凹球面に形成されるとともに、こ
れらの球面の中心は同一軸線上に配され、当該構造物の
固有振動周期に同期的に対応する所定の長さを有する揺
れ柱と、前記揺れ柱の小径の球面に対して同径の球面を
もって嵌合し、該揺れ柱上に揺動自在に載置される質量
体と、構造物に反力を取るとともに前記質量体に連動
し、該質量体を初期位置に常時復帰させる復帰装置と、
からなることを特徴とする。B. Configuration of the Invention [Means for Solving the Problems] The present invention employs the following technical means (configuration) to achieve the above object. That is, a dynamic vibration absorber installed in a structure that vibrates in the horizontal direction, wherein the lower end surface is formed as a large-diameter convex spherical surface in contact with the planar floor surface of the structure, and the upper end surface is a small-diameter convex spherical surface or While being formed as concave spheres, the centers of these spheres are arranged on the same axis, and have a swing column having a predetermined length synchronously corresponding to the natural oscillation period of the structure, and a small diameter of the swing column. A mass body fitted with a spherical surface having the same diameter as the spherical surface and swingingly mounted on the swinging column, and taking a reaction force on the structure and interlocking with the mass body, initializes the mass body. A return device that always returns to the position,
It is characterized by consisting of.
構造物に地震動・風荷重などの強大な周期エネルギー
が作用して構造物が水平方向に揺れると、該構造物の振
動は本装置に伝えられる。しかるに、本装置の揺れ柱は
構造物の床面に揺動自在に載置されているので、揺れ柱
が振動し、かつ、その上に載置された質量体が振動す
る。When a strong periodic energy such as seismic motion or wind load acts on the structure to shake the structure horizontally, the vibration of the structure is transmitted to this device. However, since the swing column of the present apparatus is swingably mounted on the floor of the structure, the swing column vibrates, and the mass body mounted thereon vibrates.
この振動において、揺れ柱は単振子運動をなし、その
長さは構造物の固有周期に対応するように設定されてい
るので、質量体は該固有周期に同期して振動することに
なり、従って、構造物の振動エネルギーを吸収する。In this vibration, the oscillating column forms a simple pendulum motion, and its length is set to correspond to the natural period of the structure, so that the mass body oscillates in synchronization with the natural period. , Absorb the vibration energy of the structure.
本発明の動吸振装置の実施例を図面に基づいて説明す
る。An embodiment of the dynamic vibration absorber of the present invention will be described with reference to the drawings.
第１図〜第３図はその一実施例を示す。 1 to 3 show an embodiment thereof.
図において、1,2,3はそれぞれ建物の一区画を構成す
る天井面、床面及び壁面である。In the figure, reference numerals 1, 2, and 3 denote a ceiling surface, a floor surface, and a wall surface, which constitute one section of the building.
本実施例の動吸振装置Ｄは、この建物の一区画に設置
され、該建物の床面２に等距離間隔を保って配された複
数（本実施例では４）の下沓部材５と、該下沓部材５上
のそれぞれに、揺動自在に載置され、下端に大凸球面
６、上端に小凸球面７を有する長尺の揺れ柱８と、該揺
れ柱８の小凸球面７上に揺動自在に載置される質量体10
と、該質量体10上に設置される復帰装置12と、を含む。A plurality of (four in the present embodiment) lower shoe members 5 installed in one section of the building and arranged at equal distances on the floor 2 of the building, A long swinging column 8 having a large convex spherical surface 6 at the lower end and a small convex spherical surface 7 at the upper end, and a small convex spherical surface 7 of the swinging column 8. The mass body 10 that is mounted to be swingable on the top
And a return device 12 installed on the mass body 10.
以下、各部の詳細構造を説明する。 Hereinafter, the detailed structure of each part will be described.
下沓部材５は上面に円環状の突壁5aが形成され、該突
壁5a内は平垣な支圧面5bを形成する。そして、外周の取
付けフランジ5cを介して床面２に取付けボルト14をもっ
て固設される。An annular projecting wall 5a is formed on the upper surface of the lower shoe member 5, and the inside of the projecting wall 5a forms a flat bearing surface 5b. And it is fixed to the floor surface 2 with the mounting bolt 14 via the mounting flange 5c on the outer periphery.
揺れ柱８は所定の長さを有し、その下端の大凸球面６
を下沓部材５の平面状の支圧面5bに点接触して立設され
る。該大凸球面６は下沓部材５の突壁5aにわずかに間隙
を存して囲撓され、揺れ柱８のどの方向への傾動移動を
許容し、かつ過度の傾きを阻止する。The rocking column 8 has a predetermined length, and a large convex spherical surface 6 at the lower end thereof.
Is erected in point contact with the flat bearing surface 5b of the lower gear member 5. The large convex spherical surface 6 is surrounded and bent with a slight gap in the protruding wall 5a of the lower shoe member 5, and allows the swing column 8 to tilt and move in any direction, and prevents excessive tilt.
該揺れ柱８は切頭円錐体状に形成され、その上部には
小柱15が突設され、その上端部が半球状の小凸球面７と
なる。大凸球面６は曲率半径Ｒを有し、小凸球面７は曲
率半径ｒを有し、ともに中心Ｏを共有する。揺れ柱８の
長さはこれらの曲率半径R,r、場合によってはＲのみに
よって実質的に決まる。従って、揺れ柱８は本実施例で
は切頭円錐体となっているが、この関係を満たすもので
あれば他の形状であってもよい（第６図（ｂ）参照）。The rocking column 8 is formed in the shape of a truncated cone, and a small column 15 is projectingly provided on the upper part thereof, and the upper end portion thereof becomes a hemispherical small convex spherical surface 7. The large convex sphere 6 has a radius of curvature R, and the small convex sphere 7 has a radius of curvature r, and both share a center O. The length of the sway column 8 is substantially determined by these radii of curvature R, r, and in some cases, R alone. Therefore, the rocking column 8 is a truncated cone in this embodiment, but may have another shape as long as it satisfies this relationship (see FIG. 6 (b)).
質量体10は所定の重量（主振動系の1/10程度）を有
し、本実施例では正方形板状をなし、上沓部材17を介し
て小凸球面７に載置される。The mass body 10 has a predetermined weight (about 1/10 of the main vibration system), has a square plate shape in this embodiment, and is mounted on the small convex spherical surface 7 via the upper gear member 17.
上沓部材17の下面には球面状の凹球面18が凹設され、
揺れ柱８の小凸球面７に被嵌される。該凹球面18の曲率
半径は小凸球面７と同径であり、従って小凸球面７と凹
球面18とは摺動接触する。なお、該凹球面18は小凸球面
７に対して移動を許容すべく半分未満に被嵌される。但
し小凸球面７が半球を超える球体であればこの制約を受
けない（第６図（ａ）参照）。On the lower surface of the upper shoe member 17, a spherical concave spherical surface 18 is provided,
It is fitted on the small convex spherical surface 7 of the swing column 8. The radius of curvature of the concave spherical surface 18 is the same as that of the small convex spherical surface 7, and therefore the small convex spherical surface 7 and the concave spherical surface 18 make sliding contact. The concave spherical surface 18 is fitted in less than half to allow the small convex spherical surface 7 to move. However, if the small convex spherical surface 7 is a sphere larger than a hemisphere, this restriction is not applied (see FIG. 6 (a)).
本装置Ｄにおいては揺れ柱８の諸元に特別の配慮がな
される。In the present device D, special consideration is given to the specifications of the rocking column 8.
すなわち、揺れ柱８の長さすなわち実質的には大凸球
面６の半径Ｒが揺れ柱８の振動周期Ｔを決定する主要要
素となるものであり、これを長周期振動する建物の第１
次固有周期に合致するように決定される。揺れ角度θが
小さい程振動周期Ｔを決定する半径Ｒの影響が大きくな
るものであり、このため半径Ｒは可及的大きく採られる
必要がある。このため、半径Ｒは1m以上となるのが通常
である。従ってまた、本実施例では半径Ｒと半径ｒとの
中心Ｏを共有しているが、この態様に限定されず、長周
期を得るため半径Ｒの中心Ｏを更に上方に移動させても
よいものである。That is, the length of the swing column 8, that is, the radius R of the large convex spherical surface 6 is a main element that determines the oscillation period T of the swing column 8, and this is the first element of a building that vibrates in a long cycle.
It is determined to match the next natural period. The smaller the swing angle θ, the greater the influence of the radius R that determines the vibration period T. Therefore, the radius R needs to be as large as possible. For this reason, the radius R is usually 1 m or more. Therefore, in the present embodiment, the center O of the radius R and the radius r is shared, but the present invention is not limited to this mode, and the center O of the radius R may be moved further upward to obtain a long period. Is.
この結果、質量体10の重量に無関係に固有周期が決ま
ることになる。As a result, the natural period is determined regardless of the weight of the mass body 10.
復帰装置12は、天井面１から垂設される中心棒20と、
該中心棒20の周りに放射状の位置に配され質量体10に固
設される複数のばね座21と、中心棒20とばね座21間に介
装される戻しばね22とからなる。戻しばね22には適宜プ
レ応力を導入し、トリガー効果を持たせることができ
る。The return device 12 includes a center rod 20 suspended from the ceiling surface 1,
It comprises a plurality of spring seats 21 arranged radially around the center bar 20 and fixed to the mass body 10, and a return spring 22 interposed between the center bar 20 and the spring seat 21. Pre-stress can be appropriately introduced into the return spring 22 to provide a trigger effect.
該復帰装置12には中心棒20を利用して減衰装置が付加
される。すなわち、中心棒20の下端に平板状の抵抗板25
が水平を保って固設され、該抵抗板25を囲むように鍋状
凹部26を有する円筒容器27が質量体10に固定される。抵
抗板25と鍋状凹部26の底面とは微小間隙に保持され、少
なくともこの間隙部を満たすように粘性体28が容器27に
充填される。A damping device is added to the restoring device 12 using the center rod 20. That is, a flat resistive plate 25 is attached to the lower end of the center rod 20.
Is fixed horizontally, and a cylindrical container 27 having a pot-shaped concave portion 26 is fixed to the mass body 10 so as to surround the resistance plate 25. The resistance plate 25 and the bottom surface of the pot-shaped recess 26 are held in a minute gap, and the viscous body 28 is filled in the container 27 so as to fill at least this gap.
その他、図において、30は壁面３に固設されたストッ
パであり、ゴム等の弾性素材よりなる。In addition, in the drawing, reference numeral 30 denotes a stopper fixed to the wall surface 3 and is made of an elastic material such as rubber.
第４図は本実施例装置Ｄの設置の態様を示す。図にお
いて、Ａは地盤Ｅに立設された多層階よりなる建物であ
って、その最上層階に本装置Ｄが設置される。すなわ
ち、通常、最上層階において、最も横振動が大きくな
り、動吸振装置Ｄはこの階に設置されて振動エネルギー
の吸収をなす。更には、他の階にも設置されることは自
由である。FIG. 4 shows a mode of installation of the apparatus D of this embodiment. In the figure, A is a multi-story building erected on the ground E, and the device D is installed on the uppermost floor thereof. That is, normally, the transverse vibration becomes largest on the uppermost floor, and the dynamic vibration absorber D is installed on this floor to absorb vibration energy. Furthermore, it can be freely installed on other floors.
（実施例の作用） 地震あるいは風荷重などの強大な強制振動力が建物Ａ
に作用すると該振動は本装置Ｄに伝達され、建物Ａの最
も揺れる場所に載置された本装置Ｄは大きく揺れること
になる。すなわち、本装置の揺れ柱８は下沓部材５の支
圧面5b上に揺動自在に載置されているので、揺れ柱８が
振動し、かつ、その上に載置された質量体10が振動す
る。(Operation of Example) The building A is subjected to a strong forced vibration force such as an earthquake or wind load.
The vibration is transmitted to the device D, and the device D placed at the most swaying location in the building A sways significantly. That is, since the swing column 8 of the present apparatus is swingably mounted on the bearing surface 5b of the lower shoe member 5, the swing column 8 vibrates, and the mass body 10 mounted thereon is moved. Vibrate.
この振動において、揺れ柱８は単振子運動をなし、そ
の長さは建物Ａの固有周期に対応するように設定されて
いるので、質量体10は該固有周期に同期して振動するこ
とになり、従って、建物Ａの振動エネルギーを吸収す
る。In this vibration, the swinging column 8 makes a simple pendulum motion, and its length is set to correspond to the natural period of the building A, so that the mass body 10 vibrates in synchronization with the natural period. Therefore, the vibration energy of the building A is absorbed.
第５図はこの振動時の揺れ柱８の状態を示すものであ
って、揺れ角度θは微小であるが、揺れ柱８の半径Ｒは
大きなものであるので、中心Ｏの水平移動は大きく、従
って、質量体10も大きく水平変位する。なお、揺れ角度
θは揺れ柱８の中心軸と中心Ｏからの垂線とのなす角度
であり、大凸球面６と支圧面5bとの接点Ｐはこの垂線上
にある。FIG. 5 shows the state of the swaying column 8 during this vibration. The swaying angle θ is small, but the radius R of the swaying column 8 is large. Therefore, the mass body 10 is also largely displaced horizontally. The swing angle θ is the angle between the center axis of the swing column 8 and the perpendicular from the center O, and the contact point P between the large convex spherical surface 6 and the bearing surface 5b is on this perpendicular.
また、揺れ柱８の揺動運動において、中心Ｏと、大凸
球面６と支圧面5bとの接点Ｐとは、常に鉛直線上にあ
り、従って中心Ｏは同一水平面上にある。この結果、質
量体10は水平方向に移動する。In the swinging motion of the swinging column 8, the center O and the contact point P between the large convex spherical surface 6 and the bearing surface 5b are always on the vertical line, and the center O is on the same horizontal plane. As a result, the mass body 10 moves in the horizontal direction.
このため、質量体10上に設置された復帰装置12におけ
る減衰装置の抵抗体25と円筒容器27との微小間隙は一定
に保持され、良好な粘性せん断抵抗を発揮する。For this reason, the minute gap between the resistor 25 of the damping device and the cylindrical container 27 in the return device 12 installed on the mass body 10 is kept constant, and good viscous shear resistance is exhibited.
本実施例装置Ｄにおいてはまた、復帰装置12における
戻しばね22にプレ応力が導入されている場合には、一定
以上の大きさの地震に対して作動するトリガー効果を発
揮させることができる。In the device D of the present embodiment, when a prestress is applied to the return spring 22 of the return device 12, a trigger effect that operates for an earthquake of a certain magnitude or more can be exhibited.
更に、本装置Ｄが過度に動いた場合には、質量体10の
側面がストッパ30に当接し、それ以上の移動を阻止す
る。Further, when the device D moves excessively, the side surface of the mass body 10 comes into contact with the stopper 30 to prevent further movement.
本発明は上記実施例に限定されるものではなく、本発
明の基本的技術思想の範囲内で種々設計変更が可能であ
る。すなわち、以下の態様は本発明の技術的範囲内に包
含されるものである。The present invention is not limited to the above embodiment, and various design changes can be made within the scope of the basic technical idea of the present invention. That is, the following embodiments are included in the technical scope of the present invention.
（Ａ）揺れ柱８の上端の小凸球面を半球に限らず、球体
状とする態様（第６図（ａ）参照）を採ることは自由で
ある。(A) The small convex spherical surface at the upper end of the swaying column 8 is not limited to a hemisphere, but may be a spherical shape (see FIG. 6A).
（Ｂ）先の実施例では、揺れ柱８の上端を小凸球面７と
し、上沓部材17に凹球面18を形成したが、これを逆の態
様とすることができる。(B) In the above embodiment, the upper end of the swinging column 8 is formed as the small convex spherical surface 7 and the upper shoe member 17 is formed with the concave spherical surface 18, but this can be reversed.
すなわち、第６図（ｂ）は揺れ柱8Aの上端面に小凹球
面32が凹設され、質量体10の下端には小柱33が垂設さ
れ、該小柱33の下端が小凸球面34とされている。そし
て、小凸球面34の中心Ｏと揺れ柱8Aの大凸球面６の中心
とは一致することは先の実施例と同様である。なお、こ
の揺れ柱8Aにおいては下端部のみが大径にされ、軽量化
が図られている。That is, in FIG. 6 (b), a small concave spherical surface 32 is provided on the upper end surface of the swinging column 8A, and a small column 33 is vertically provided at the lower end of the mass body 10, and the lower end of the small column 33 has a small convex spherical surface. It is said to be 34. The center O of the small convex spherical surface 34 and the center of the large convex spherical surface 6 of the rocking column 8A coincide with each other, as in the previous embodiment. It should be noted that only the lower end of the swinging column 8A has a large diameter to reduce the weight.
（Ｃ）揺れ柱８は４本に限らず、質量体10を自立するに
足る個数を採用することができるばかりでなく、本装置
Ｄ特には質量体10を保持できる構造を採るならば該揺れ
柱８は１本もしくは２本であってもよい。(C) The number of the rocking columns 8 is not limited to four, and not only can the number sufficient to make the mass body 10 self-supporting, but also the apparatus D, in particular, if the structure capable of holding the mass body 10 is adopted, the rocking column 8 The number of columns 8 may be one or two.
（Ｄ）下沓部材５は床面２が十分に硬くかつ平坦であれ
ば、省略することも、あるいは一枚ものを採用すること
ができる。(D) If the floor surface 2 is sufficiently hard and flat, the lower shoe member 5 may be omitted or one piece may be adopted.
（Ｅ）復帰装置12において、中心棒20を質量体10の上面
中心に固定し、ばね座21を天井面１に取り付ける態様を
採っても作用上に本質的な差異はない。(E) In the return device 12, even when the center rod 20 is fixed to the center of the upper surface of the mass body 10 and the spring seat 21 is attached to the ceiling surface 1, there is no essential difference in operation.
（Ｆ）復帰装置12は、本実施例では質量体10上に１箇所
配された態様を採るが、質量体10上に対称位置に２箇所
もしくはそれ以上の箇所に配する態様を採ってもよい。(F) In the present embodiment, the return device 12 employs a mode in which the return device 12 is arranged at one place on the mass body 10, but may employ an aspect in which the return apparatus 12 is arranged at two or more places in a symmetrical position on the mass body 10. Good.
このようにすることにより、質量体10の水平方向の回
転が防止できる。By doing so, the horizontal rotation of the mass body 10 can be prevented.
（Ｇ）第７図及び第８図に復帰装置の他の構造を示す。(G) FIGS. 7 and 8 show another structure of the restoring device.
この復帰装置12Aは、天井面１から垂設された中心棒3
2と、該中心棒32を取り囲んで質量体10の上面に固設さ
れる円筒状の反力筒33と、これらの中心棒32と反力筒33
との間に放射状に等間隔で介装される戻しばね34とダン
パ35とからなる。ダンパ35は通常の油圧ダンパ、あるい
は粘性せん断ダンパ等の種々の態様のものが採用されう
る。該ダンパ35は両端においてピン結合（ユニバーサル
ジョイントを含む）される。図において、復帰装置12A
以外は先の実施例と同一の構成を採る。This returning device 12A is provided with a center rod 3 vertically extending from the ceiling surface 1.
2, a cylindrical reaction tube 33 surrounding the center rod 32 and fixed to the upper surface of the mass body 10; and the center rod 32 and the reaction tube 33
It includes a return spring 34 and a damper 35 which are radially interposed between and at equal intervals. As the damper 35, various modes such as a normal hydraulic damper and a viscous shear damper can be adopted. The damper 35 is pin-coupled (including a universal joint) at both ends. In the figure, the restoring device 12A
Except for this, the configuration is the same as that of the previous embodiment.
この構造によれば、質量体10の横方向移動に伴い、鉛
直方向の変位成分が生じてもこれを吸収することができ
る。According to this structure, even if a displacement component in the vertical direction occurs with the lateral movement of the mass body 10, it can be absorbed.
ハ．発明の効果 本発明の動吸振装置は、以下の特有の効果を有する。C. Effects of the Invention The dynamic vibration absorbing device of the present invention has the following unique effects.
揺れ柱は単振子運動をなし、その長さを適当に選定
することにより構造物の固有長周期振動に容易に対応す
ることができる。The swaying column has a simple pendulum motion, and by appropriately selecting the length, it is possible to easily cope with the natural long-period vibration of the structure.
揺れ柱の長さは十分に大きく採られるので、わずか
な揺れ角度に対しても質量体は大きく揺れ、敏感な応答
をなし、効果的な減衰作用をなす。The length of the sway column is large enough so that the mass will sway greatly for a slight sway angle, providing a sensitive response and effective damping.
図面は本発明の動吸振装置の実施例を示し、第１図はそ
の一実施例の全体構造を示す一部断面側面図、第２図は
第１図のII−II線断面図、第３図は第１図のIII−III線
断面図、第４図は本装置の高層建物内への設置模式図、
第５図は揺れ柱の作動状態を示す模式図、第６図（ａ）
（ｂ）は揺れ柱の他の態様図第７図は復帰装置の他の態
様を示す一部断面側面図、第８図は第７図のVIII−VIII
線断面図である。 ２……床面、６……大凸球面、７……小凸球面、８……
揺れ柱、10……質量体、12……復帰装置、32……小凹球
面The drawings show an embodiment of the dynamic vibration absorbing device of the present invention, FIG. 1 is a partial sectional side view showing the entire structure of the embodiment, and FIG. The figure is a cross-sectional view taken along the line III-III of FIG. 1, FIG. 4 is a schematic view of the installation of this device in a high-rise building,
FIG. 5 is a schematic diagram showing the operating state of the rocking column, FIG. 6 (a)
FIG. 7B is another side view of the rocking column. FIG. 7 is a partial cross-sectional side view showing another mode of the return device, and FIG. 8 is VIII-VIII of FIG.
It is a line sectional view. 2 ... floor surface, 6 ... large convex spherical surface, 7 ... small convex spherical surface, 8 ...
Swing column, 10 …… mass body, 12 …… return device, 32 …… small concave spherical surface
Claims (2)
吸振装置であって、 下端面が構造物の平面状の床面に接する大径の凸球面に
形成され、上端面は小径の凸球面または凹球面に形成さ
れるとともに、これらの球面の中心は同一軸線上に配さ
れ、当該構造物の固有振動周期に同期的に対応する所定
の長さを有する揺れ柱と、 前記揺れ柱の小径の球面に対して同径の球面をもって嵌
合し、該揺れ柱上に揺動自在に載置される質量体と、 当該構造物に反力を取るとともに前記質量体に連動し、
該質量体を初期位置に常時復帰させる復帰装置と、 からなる動吸振装置。1. A dynamic vibration absorber installed on a structure vibrating in a horizontal direction, wherein a lower end surface is formed as a large-diameter convex spherical surface in contact with a planar floor surface of the structure, and an upper end surface has a small diameter. A swing column having a predetermined length corresponding to the natural vibration period of the structure, wherein the swing column is formed as a convex spherical surface or a concave spherical surface, and the centers of these spherical surfaces are arranged on the same axis; A mass body fitted with a spherical surface of the same diameter to a small-diameter spherical surface of the same, and a mass body slidably mounted on the swinging column, taking a reaction force on the structure and interlocking with the mass body,
A dynamic vibration absorbing device comprising: a returning device that constantly returns the mass body to an initial position.
項１に記載の動吸振装置。2. The dynamic vibration absorbing device according to claim 1, wherein a damping device is added to the restoring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1077865A JP2668436B2 (en) | 1989-03-29 | 1989-03-29 | Dynamic vibration absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1077865A JP2668436B2 (en) | 1989-03-29 | 1989-03-29 | Dynamic vibration absorber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02256937A JPH02256937A (en) | 1990-10-17 |
| JP2668436B2 true JP2668436B2 (en) | 1997-10-27 |
Family
ID=13645949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1077865A Expired - Fee Related JP2668436B2 (en) | 1989-03-29 | 1989-03-29 | Dynamic vibration absorber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2668436B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3016331B2 (en) * | 1993-09-07 | 2000-03-06 | 富士通株式会社 | Manufacturing method of electronic equipment housing |
| JP4670188B2 (en) * | 2001-06-14 | 2011-04-13 | 鹿島建設株式会社 | Seismic control device for structures |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62188834A (en) * | 1986-02-14 | 1987-08-18 | Shoichi Hashimoto | Vibration damping supporter |
| JPH0529562Y2 (en) * | 1987-02-09 | 1993-07-28 |
-
1989
- 1989-03-29 JP JP1077865A patent/JP2668436B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02256937A (en) | 1990-10-17 |
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