JPS6375263A - Vibration damping apparatus - Google Patents
Vibration damping apparatusInfo
- Publication number
- JPS6375263A JPS6375263A JP21819986A JP21819986A JPS6375263A JP S6375263 A JPS6375263 A JP S6375263A JP 21819986 A JP21819986 A JP 21819986A JP 21819986 A JP21819986 A JP 21819986A JP S6375263 A JPS6375263 A JP S6375263A
- Authority
- JP
- Japan
- Prior art keywords
- vibration damping
- damping device
- vibration
- force acting
- damping apparatus
- 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.)
- Granted
Links
- 238000013016 damping Methods 0.000 title claims description 23
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
Landscapes
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は塔状構造物全般における制振装置に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a vibration damping device for tower-like structures in general.
第２図において構造物０１に矢示方向の風０２が作用し
た時構造物０１の後流には周期的な渦０４が発生し、こ
の渦０４により構造物０１は風０２に直角方向０３に振
動する。In Figure 2, when a wind 02 in the direction of the arrow acts on a structure 01, a periodic vortex 04 is generated in the wake of the structure 01, and this vortex 04 causes the structure 01 to move in a direction 03 perpendicular to the wind 02. Vibrate.
従来上記振動を抑制するには第３図及び第４図に示すよ
うな油の粘性を利用し九制振装置〔オイルダンパー０６
〕または傾斜台の摩擦を利用した制振装置〔スライデン
グブロック０７〕等を構造物０１に取りつけ機械的に制
振するか、第５，６図又は第７，８図に示すように構造
物０１のまわシの流れを整流する部材（カウリング０８
）または流れを乱す部材〔ヘリカルワイヤー０９〕を構
造物０１に取りつけ後流に渦０４が発生しないようにし
て空力的に制振する方法が用いられている。Conventionally, in order to suppress the above-mentioned vibrations, a nine-vibration damping device [oil damper 06
] Or, attach a vibration damping device [sliding block 07] etc. to the structure 01 that utilizes the friction of an inclined table to mechanically damp the vibration, or install a vibration damping device using the structure as shown in Figures 5 and 6 or 7 and 8. A member that rectifies the flow of cowling 01 (cowling 08
) or a method of aerodynamically damping vibration by attaching a flow-disturbing member [helical wire 09] to the structure 01 to prevent the generation of vortices 04 in the wake is used.
第３図、第４図に示すような機械的な割振対策は、大型
の海洋橋梁のようにまわシに岸が無い場合、又まわシの
海が船舶の航行上使用できない場合等、設置場所数シつ
け場所の無い場合には使用できない。また第５，６図及
び第７，８図に示すような空力的な制振対策は取υ付は
取りはすしのだめの施行が大がかシとなるので恒久的な
対策としては良いが吊橋の主塔のように架設時のある時
期のみ必要となる一時的対策としては不向きである。Mechanical allocation measures such as those shown in Figures 3 and 4 can be used in cases where there is no shore, such as large offshore bridges, or where the sea around the area cannot be used for ship navigation. Cannot be used if there is no place to attach several sheets. In addition, aerodynamic damping measures such as those shown in Figures 5 and 6 and Figures 7 and 8 are good as permanent measures, but they are not suitable for suspension bridges. It is unsuitable as a temporary measure that is only needed at a certain time during construction, such as the main tower of .
従って、周囲の地形的な制約を受けずにかつ取付け、取
外しの容易は制振装置を開発する必要がある。Therefore, it is necessary to develop a vibration damping device that is not subject to surrounding topographical restrictions and that is easy to install and remove.
第３図、第４図に示すように、空気力を構造的な力で打
ち消しあわせる制振対策、また第５．６図及び第７，８
図のように振動を生ぜしめる空気力を働かないようにす
る割振対策に対し、本発明においては空気力を空気力で
打ち消しあわせる。As shown in Figures 3 and 4, vibration damping measures are taken to cancel aerodynamic forces with structural forces, as well as Figures 5.6 and 7 and 8.
As shown in the figure, in contrast to the distribution measures that prevent the aerodynamic force that causes vibrations from working, in the present invention, the aerodynamic force is canceled out by the aerodynamic force.
具体的には第１図において、構造物１の動きを時々刻々
検知する装置１０よシ送られる信号に従い駆動装置１１
を用いて翼形状を有する制振装置１２を回動させ構造物
０１に働く空気力と真形状を有する制振装置１２に働く
空気力を常に反対方向に作用させ打ち消しあわせる。Specifically, in FIG. 1, a drive device 11 is activated in accordance with a signal sent from a device 10 that detects the movement of a structure 1 from time to time.
is used to rotate the vibration damping device 12 having a wing shape, so that the aerodynamic force acting on the structure 01 and the aerodynamic force acting on the vibration damping device 12 having a true shape are always applied in opposite directions and cancel each other out.
翼断面形状を有する部材は風向に対して傾きを与えると
風向に直角方向の揚力を発生する。前記の渦によって発
生する交番力と逆方向に揚力を発生させると構造物の振
動振幅は小さくなる。When a member having a wing cross-sectional shape is tilted with respect to the wind direction, it generates lift in a direction perpendicular to the wind direction. When a lifting force is generated in the opposite direction to the alternating force generated by the vortices, the vibration amplitude of the structure becomes smaller.
第１図に本発明の１実施例としての制振装置の概略斜視
図を示す。FIG. 1 shows a schematic perspective view of a vibration damping device as an embodiment of the present invention.
構造物１の頂上附近に取付けられ該構造物１の動きを検
知する装置１０と、該検知装置１０より送られる指令に
よシ回転駆動する装置１１と駆動軸１３で連結された翼
断面形状を有する制振部材１２よシなる。A blade cross-sectional shape that is connected by a drive shaft 13 to a device 10 that is attached near the top of a structure 1 and detects the movement of the structure 1, and a device 11 that is rotated by a command sent from the detection device 10. This is compared to the vibration damping member 12 that has the same structure.
第１図では構造物の動きを検出する装ｆｔ１ｏは１個だ
け取付けた実施例を示したが、構造物の形状によってそ
の取付数は決ｔ、ｂ、複数個取付けるのが通常である。Although FIG. 1 shows an embodiment in which only one device for detecting the movement of a structure is installed, the number of devices to be installed is determined depending on the shape of the structure, and it is usual to install a plurality of devices.
交番渦列によって発生する構造物の振動を、交番渦列と
同一周期で逆方向の力（翼形状体に働く揚力）を与える
ことによシ構造物の振動を抑制することができる。Vibration of the structure generated by the alternating vortex row can be suppressed by applying a force (lifting force acting on the airfoil) in the opposite direction at the same period as the alternating vortex row.
また周囲の地形による影響を受けることがなく、装置の
取付け、取外しが容易である。Furthermore, the device is not affected by the surrounding topography and can be easily installed and removed.
第１図は本発明制振装置の実施例の斜視図、第２図は風
による振動のメカニズム説明図である。
第３図は従来の制振装置の１例を示す概略図、第４図は
従来の制振装置の他の例を示す概略図である。
第５図は従来の制振装置の他の例を示す平面図、第６図
は第５図の側面図である。
第７図は従来の制振装置の他の例を示す平面図、第８図
は第７図の側面図である。
１・・・構造物
２・・・風
１ｏ・・・構造物の動きを検知する装置１１・・・駆動
装置
１２・・・翼断面形状を有する制振部材復代理人 弁理
士 岡 本 重 文 外２名第２図
第４図
ｎ９
第５図
第６図FIG. 1 is a perspective view of an embodiment of the vibration damping device of the present invention, and FIG. 2 is an explanatory diagram of the mechanism of vibration caused by wind. FIG. 3 is a schematic diagram showing one example of a conventional vibration damping device, and FIG. 4 is a schematic diagram showing another example of the conventional vibration damping device. FIG. 5 is a plan view showing another example of a conventional vibration damping device, and FIG. 6 is a side view of FIG. 5. FIG. 7 is a plan view showing another example of a conventional vibration damping device, and FIG. 8 is a side view of FIG. 7. 1...Structure 2...Wind 1o...Device for detecting movement of structure 11...Driving device 12...Vibration damping member having a wing cross-sectional shape Sub-agent Patent attorney Shigefumi Okamoto 2 people Figure 2 Figure 4 Figure n9 Figure 5 Figure 6
Claims (1)
いて、 前記構造物の動きを検知する装置から送られる指令によ
つて翼断面形状の制振部材を回動させ、前記翼断面形状
の制振部材に作用する揚力の方向を交番的に変えること
によつて構造物に作用する交番力を弱めるようにしたこ
とを特徴とする制振装置。[Claims] A vibration damping device for suppressing wind-induced vibrations of a tower-like structure, wherein a vibration damping member having a blade cross-section is rotated by a command sent from a device that detects movement of the structure. A vibration damping device characterized in that the alternating force acting on the structure is weakened by alternately changing the direction of the lift force acting on the vibration damping member having the wing cross-sectional shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21819986A JPH0674674B2 (en) | 1986-09-18 | 1986-09-18 | Vibration control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21819986A JPH0674674B2 (en) | 1986-09-18 | 1986-09-18 | Vibration control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6375263A true JPS6375263A (en) | 1988-04-05 |
| JPH0674674B2 JPH0674674B2 (en) | 1994-09-21 |
Family
ID=16716169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21819986A Expired - Fee Related JPH0674674B2 (en) | 1986-09-18 | 1986-09-18 | Vibration control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0674674B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005083266A1 (en) * | 2004-02-27 | 2005-09-09 | Mitsubishi Heavy Industries, Ltd. | Wind turbine generator, active vibration damping method for the same, and wind turbine tower |
| CN114233783A (en) * | 2021-12-06 | 2022-03-25 | 天津大学 | D-shaped fin for tower vibration reduction |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180087199A (en) * | 2018-03-28 | 2018-08-01 | 정시은 | Balancing System for High Altitude Structure |
-
1986
- 1986-09-18 JP JP21819986A patent/JPH0674674B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005083266A1 (en) * | 2004-02-27 | 2005-09-09 | Mitsubishi Heavy Industries, Ltd. | Wind turbine generator, active vibration damping method for the same, and wind turbine tower |
| US7692322B2 (en) | 2004-02-27 | 2010-04-06 | Mitsubishi Heavy Industries, Ltd. | Wind turbine generator, active damping method thereof, and windmill tower |
| US8026623B2 (en) | 2004-02-27 | 2011-09-27 | Mitsubishi Heavy Industries, Ltd | Wind turbine generator, active damping method thereof, and windmill tower |
| US8115331B2 (en) | 2004-02-27 | 2012-02-14 | Mitsubishi Heavy Industries, Ltd. | Wind turbine generator, active damping method thereof, and windmill tower |
| US8299643B2 (en) | 2004-02-27 | 2012-10-30 | Mitsubishi Heavy Industries, Ltd. | Wind turbine generator, active damping method thereof, and windmill tower |
| US8395273B2 (en) | 2004-02-27 | 2013-03-12 | Mitsubishi Heavy Industries, Ltd. | Wind turbine generator, active damping method thereof, and windmill tower |
| US8546968B2 (en) | 2004-02-27 | 2013-10-01 | Mitsubishi Heavy Industries, Ltd. | Wind turbine generator, active damping method thereof, and windmill tower |
| CN114233783A (en) * | 2021-12-06 | 2022-03-25 | 天津大学 | D-shaped fin for tower vibration reduction |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0674674B2 (en) | 1994-09-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |