JP2577977Y2 - Damping device - Google Patents
Damping deviceInfo
- Publication number
- JP2577977Y2 JP2577977Y2 JP1990084199U JP8419990U JP2577977Y2 JP 2577977 Y2 JP2577977 Y2 JP 2577977Y2 JP 1990084199 U JP1990084199 U JP 1990084199U JP 8419990 U JP8419990 U JP 8419990U JP 2577977 Y2 JP2577977 Y2 JP 2577977Y2
- Authority
- JP
- Japan
- Prior art keywords
- building
- mass
- cylinder
- damping device
- vibration damping
- 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
Description
【考案の詳細な説明】 （産業上の利用分野） 本考案は、建造物の振動を抑制する制振装置の改良に
関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to an improvement of a vibration damping device that suppresses vibration of a building.
（従来の技術） ビルなどの建造物の制振装置として、第４図に示すよ
うに積層ゴム２を介してマス１を建造物３に支持し、積
層ゴム２の減衰作用で建造物３の水平振動を抑制するよ
うにした装置が知られている。(Prior Art) As a vibration damping device for a building such as a building, a mass 1 is supported on a building 3 via a laminated rubber 2 as shown in FIG. A device that suppresses horizontal vibration is known.
（考案の課題） この場合に、適正な制振作用を得るためには制振装置
の固有振動の周波数と建造物３の固有振動の周波数とを
一定の関係に保つ必要があった。(Problem of the Invention) In this case, in order to obtain an appropriate vibration damping action, it is necessary to maintain a constant relationship between the frequency of the natural vibration of the vibration damping device and the frequency of the natural vibration of the building 3.
制振装置の固有振動の角周波数Wnは、マスの質量を
ｍ、免震体の水平方向のばね常数をｋとすると、 で与えられ、これを調整するには積層ゴム２の数量、形
状または材質を変えるか、マス１の質量を変える必要が
あった。The angular frequency Wn of the natural vibration of the vibration damping device is as follows, where m is the mass of the mass, and k is the spring constant of the seismic isolator in the horizontal direction To adjust this, it was necessary to change the number, shape or material of the laminated rubber 2 or change the mass of the mass 1.
しかしながら、これらはいずれも容易でなく、特に制
振装置をいったん施工した後に固有角周波数を変更する
ことは困難であった。However, none of these methods is easy, and it is particularly difficult to change the natural angular frequency after the vibration damping device is once constructed.
本考案は、以上の問題を解決すべくなされたもので、
固有角周波数の調整機構を備えた制振装置を提供するこ
とを目的とする。The present invention has been made to solve the above problems,
An object of the present invention is to provide a vibration damping device provided with a natural angular frequency adjustment mechanism.
（課題を達成するための手段） 本考案は、建造物上に免震体を介してマスを搭載し、
マスと建造物とを垂直方向で連結するチューニング用の
ガススプリングを設けた制振装置において、このガスス
プリングは、シリンダの中に介在するピストンにより両
側にシリンダ室を形成し、シリンダ室に作動油を封入
し、ピストンに結合したロッドを一方のシリンダ室から
突出させ、上記ロッド端部またはシリンダの、いずれか
一方をマスに他方を建造物に結合した構造を備えるとと
もに、ガスを封入したタンクを両シリンダ室のいずれか
一方に接続し、ガス圧で作動油を加圧してチューニング
した。(Means for achieving the object) In the present invention, a mass is mounted on a building via a seismic isolation body,
In a vibration damping device provided with a tuning gas spring for vertically connecting a mass and a building, the gas spring forms a cylinder chamber on both sides by a piston interposed in a cylinder, and hydraulic oil is provided in the cylinder chamber. A rod connected to the piston is protruded from one of the cylinder chambers, and a structure is provided in which one of the rod end or the cylinder is connected to a building and the other is connected to a building, and a tank filled with gas is provided. Tuning was performed by connecting to either one of the two cylinder chambers and pressurizing hydraulic oil with gas pressure.
（作用） チューニング用のガススプリングを建造物とマスの間
に介装することにより、制振装置のばね定数が変化する
ので、固有角周波数を変更することができる。(Operation) By interposing a gas spring for tuning between the building and the mass, the spring constant of the vibration damping device changes, so that the natural angular frequency can be changed.
（実施例） 第１図〜第３図に本考案の実施例を示す。(Embodiment) Figs. 1 to 3 show an embodiment of the present invention.
第１図において、１はマス、２はマス１を建造物３に
支持する免震体としての積層ゴムである。マス１と建造
物３とを垂直方向で連結するチューニング用のガススプ
リング４を設ける。In FIG. 1, reference numeral 1 denotes a mass, and 2 denotes a laminated rubber as a seismic isolator for supporting the mass 1 on a building 3. A tuning gas spring 4 for vertically connecting the mass 1 and the building 3 is provided.
ガススプリング４は、シリンダ５の中に介在するピス
トン６により両側にシリンダ室10、11を形成させ、シリ
ンダ室10、11に作動油を封入し、ピストン６に結合した
ロッド９を一方のシリンダ室10から突出させ、上記ロッ
ド９端部をマス１に、シリンダ室11端部を建造物３に結
合した構造を備えるとともに、ガスを封入したタンク７
をシリンダ室11に接続し、このガス圧力でピストン６を
例えば伸張方向に付勢したもので、ピストンの摺動に伴
ってシリンダ５とタンク７の間を作動油が流通する。The gas spring 4 has cylinder chambers 10 and 11 formed on both sides by a piston 6 interposed in the cylinder 5, hydraulic oil is sealed in the cylinder chambers 10 and 11, and a rod 9 connected to the piston 6 is connected to one of the cylinder chambers. A tank 7 having a structure in which the end of the rod 9 is connected to the mass 1 and the end of the cylinder chamber 11 is connected to the building 3,
Is connected to the cylinder chamber 11, and the gas pressure urges the piston 6 in, for example, the extension direction. Hydraulic oil flows between the cylinder 5 and the tank 7 as the piston slides.
次に作用を説明する。 Next, the operation will be described.
第２図に示すようにマス１が距離ｘだけ水平変位した
状態で、マス１と建造物３の間に作用する水平方向の力
Ｆは次式で表される。As shown in FIG. 2, when the mass 1 is horizontally displaced by the distance x, the horizontal force F acting between the mass 1 and the building 3 is expressed by the following equation.
Ｆ＝−kx＋（f/l）ｘ ＝−（ｋ−f/l）ｘ ただし、f:ガススプリング４のばね荷重 また、制振装置の固有角周波数は次式で表される。F = −kx + (f / l) x = − (k−f / l) x where, f: spring load of the gas spring 4 Further, the natural angular frequency of the vibration damping device is expressed by the following equation.
この式に明らかなように、ばね荷重ｆを変化させるこ
とにより、つまりガススプリング４のタンク７に封入さ
れたガス圧の調整により、マス１や積層ゴム２に変更を
加えずに任意の固有角周波数Wnを得ることができる。 As is apparent from this equation, by changing the spring load f, that is, by adjusting the gas pressure sealed in the tank 7 of the gas spring 4, any arbitrary natural angle can be obtained without changing the mass 1 or the laminated rubber 2. The frequency Wn can be obtained.
また、ロッド９端部を建造物３に、シリンダ室11端部
をマス１に結合しても良く、さらに、ガススプリング４
を伸長方向へ付勢する代わりに、ガススプリング４を収
縮方向に付勢するようにタンク７をシリンダ５に接続す
ることによりばね荷重ｆの符号も変えられる このため、建造物３の固有振動の周波数を厳密に推定
することが困難な場合であっても、マス１と積層ゴム２
の施工後にタンク７のガス圧を調整すれば、制振装置は
建造物３の固有振動に対応した固有角周波数を持つよう
に調整され、最適の制振作用が得られる。Further, the end of the rod 9 may be connected to the building 3 and the end of the cylinder chamber 11 may be connected to the mass 1.
Instead of urging the gas spring 4 in the extension direction, the sign of the spring load f can be changed by connecting the tank 7 to the cylinder 5 so as to urge the gas spring 4 in the contraction direction. Even when it is difficult to accurately estimate the frequency, the mass 1 and the laminated rubber 2
If the gas pressure in the tank 7 is adjusted after the construction, the vibration damping device is adjusted to have a natural angular frequency corresponding to the natural vibration of the building 3, and an optimum vibration damping action can be obtained.
第３図は積層ゴム２を介して建造物３に支持されたマ
ス１と建造物２の間にアクチュエータ８を介装し、建造
物３の振動を別途に検出して、これに対抗するようにア
クチュエータ８を駆動するアクティブ方式の制振装置で
あるが、このようなアクティブ方式の制振装置において
もガススプリング４による固有角周波数の調整が有効で
ある。FIG. 3 shows that the actuator 8 is interposed between the building 1 and the mass 1 supported by the building 3 via the laminated rubber 2, and the vibration of the building 3 is separately detected to counter the vibration. In this case, the adjustment of the natural angular frequency by the gas spring 4 is effective.
（考案の効果） 以上のように、本考案は建造物上に免震体を介してマ
スを搭載し、マスと建造物とを垂直方向で連結するチュ
ーニング用のガススプリングを設けた制振装置におい
て、このガススプリングは、シリンダの中に介在するピ
ストンにより両側にシリンダ室を形成し、シリンダ室に
作動油を封入し、ピストンに結合したロッドを一方のシ
リンダ室から突出させ、上記ロッド端部またはシリンダ
の、いずれか一方をマスに他方を建造物に結合した構造
を備えるとともに、ガスを封入したタンクを両シリンダ
室のいずれか一方に接続し、ガス圧で作動油を加圧して
チューニングしたので、ガススプリングの付勢方向やガ
ス圧の調整でプラス、マイナスの微調整をおこなうこと
により、制振装置の施工後であっても制振装置の固有角
周波数を容易にかつ任意に変更できる。(Effects of the Invention) As described above, the present invention mounts a mass on a building via a seismic isolation body, and provides a tuning gas spring for vertically connecting the mass and the building. In this gas spring, a cylinder chamber is formed on both sides by a piston interposed in the cylinder, hydraulic oil is sealed in the cylinder chamber, a rod connected to the piston is projected from one cylinder chamber, and the rod end Or a cylinder was equipped with a structure in which either one was connected to a mass and the other was connected to a building, and a tank filled with gas was connected to one of the two cylinder chambers, and tuning was performed by pressurizing hydraulic oil with gas pressure. Therefore, by making fine adjustments in the plus and minus directions by adjusting the bias direction and gas pressure of the gas spring, the natural angular frequency of the vibration Can be easily and arbitrarily changed.
第１図は本考案の実施例を示す制振装置の概略側面図、
第２図は同じくマスの変位と力の作用との関係を説明す
る模式図、第３図は別の実施例を示すアクティブ方式の
制振装置の概略側面図である。 また、第４図は従来例を示す制振装置の概略側面図であ
る。 １……マス、２……積層ゴム、３……建造物、４……ガ
ススプリング。FIG. 1 is a schematic side view of a vibration damping device showing an embodiment of the present invention,
FIG. 2 is a schematic diagram for explaining the relationship between the displacement of the mass and the action of the force, and FIG. 3 is a schematic side view of an active vibration damping device showing another embodiment. FIG. 4 is a schematic side view of a vibration damping device showing a conventional example. 1 ... square, 2 ... laminated rubber, 3 ... building, 4 ... gas spring.
Claims (1)
マスと建造物とを垂直方向で連結するチューニング用の
ガススプリングを設けた制振装置において、このガスス
プリングは、シリンダの中に介在するピストンにより両
側にシリンダ室を形成し、シリンダ室に作動油を封入
し、ピストンに結合したロッドを一方のシリンダ室から
突出させ、上記ロッド端部またはシリンダの、いずれか
一方をマスに他方を建造物に結合した構造を備えるとと
もに、ガスを封入したタンクを両シリンダ室のいずれか
一方に接続し、ガス圧で作動油を加圧してチューニング
したことを特徴とする制振装置。1. A mass is mounted on a building via a seismic isolation body,
In a vibration damping device provided with a tuning gas spring for vertically connecting a mass and a building, the gas spring forms a cylinder chamber on both sides by a piston interposed in a cylinder, and hydraulic oil is provided in the cylinder chamber. A rod connected to the piston is protruded from one of the cylinder chambers, and a structure is provided in which one of the rod end or the cylinder is connected to a building and the other is connected to a building, and a tank filled with gas is provided. A vibration damping device connected to one of the two cylinder chambers and tuned by pressurizing hydraulic oil with gas pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990084199U JP2577977Y2 (en) | 1990-08-09 | 1990-08-09 | Damping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990084199U JP2577977Y2 (en) | 1990-08-09 | 1990-08-09 | Damping device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0442562U JPH0442562U (en) | 1992-04-10 |
| JP2577977Y2 true JP2577977Y2 (en) | 1998-08-06 |
Family
ID=31632488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990084199U Expired - Lifetime JP2577977Y2 (en) | 1990-08-09 | 1990-08-09 | Damping device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2577977Y2 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5272071A (en) * | 1975-12-11 | 1977-06-16 | Tokico Ltd | Gas spring |
| JPH0419253Y2 (en) * | 1986-06-13 | 1992-04-30 | ||
| JPH073127B2 (en) * | 1986-10-31 | 1995-01-18 | 株式会社竹中工務店 | Building damping device |
| JP2544984B2 (en) * | 1990-02-26 | 1996-10-16 | 清水建設株式会社 | Vibration suppression device for structures |
-
1990
- 1990-08-09 JP JP1990084199U patent/JP2577977Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0442562U (en) | 1992-04-10 |
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