JPH08210434A - Wind external force utilizing vibration control device - Google Patents

Wind external force utilizing vibration control device

Info

Publication number
JPH08210434A
JPH08210434A JP1687595A JP1687595A JPH08210434A JP H08210434 A JPH08210434 A JP H08210434A JP 1687595 A JP1687595 A JP 1687595A JP 1687595 A JP1687595 A JP 1687595A JP H08210434 A JPH08210434 A JP H08210434A
Authority
JP
Japan
Prior art keywords
wind
vibration
duct
gate
building
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.)
Pending
Application number
JP1687595A
Other languages
Japanese (ja)
Inventor
Yoshitsugu Nekomoto
善続 猫本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP1687595A priority Critical patent/JPH08210434A/en
Publication of JPH08210434A publication Critical patent/JPH08210434A/en
Pending legal-status Critical Current

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Landscapes

  • Bridges Or Land Bridges (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

PURPOSE: To provide a vibration control device which reduces vibration of a structure due to wind external force by eliminating necessity for huge mass for damping vibration and large energy consumption. CONSTITUTION: A duct 1 is mounted so that its opening direction can be changed on a building 4 whose vibration must be controlled, and contracts a flow of wind, acting in the building 4, by the dust 1 placed toward a direction of the wind. The downstream of the duct 1 is made to branch in the right/left, and this branch part provides a gate of changing a blow direction of the wind contracted by the duct 1 so as to suppress vibration by the wind of the building 4, also provides a wind vane of detecting a direction of the wind acting in the building 4 and a duct rotating motor 3 of changing an opening direction of the dust 1 toward the wind detected by this wind vane.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、ビル、橋梁、煙突、タ
ワー、クレーンなどの構造物に作用する風外力による振
動を抑制させる制振装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration damping device for suppressing vibrations due to external wind forces acting on structures such as buildings, bridges, chimneys, towers and cranes.

【0002】[0002]

【従来の技術】ビル、橋梁、煙突、タワーなど長大な構
造物は柔軟で振動し易い構造となっており、風外力を受
けて発生する渦により振動が励起される。その振動が大
きい場合には破壊などに至り、大きな問題となることが
ある。
2. Description of the Related Art Large structures such as buildings, bridges, chimneys, and towers are flexible and easily vibrated, and vibrations are excited by vortices generated by external wind forces. If the vibration is large, it may be destroyed, which may cause a serious problem.

【0003】その振動対策の一つとしては、ビルを例に
とると、図14に示すようにビル4の頂部あるいは頂部
近くのビル内部にマス21,ばね22,オイルダンパー
23から構成され、振動数をビル4の振動数に同調させ
た振動系(動吸振器と呼ばれる)を取付け、振動を低減
させる対策が挙げられる(対策1)。
As one of the measures against the vibration, taking a building as an example, as shown in FIG. 14, a mass 21, a spring 22 and an oil damper 23 are provided inside the building at the top of the building 4 or near the top to prevent vibration. There is a measure to reduce the vibration by installing a vibration system (called a dynamic vibration absorber) whose number is synchronized with the frequency of the building 4 (measure 1).

【0004】また、図15に示すようにマス21をアク
チュエータ24で、振動を低減させるように作動させる
能動対策方式が採用されている(対策2)。
Further, as shown in FIG. 15, an active countermeasure system in which the mass 21 is operated by an actuator 24 so as to reduce vibration is adopted (Countermeasure 2).

【0005】[0005]

【発明が解決しようとする課題】前記したマス21,ば
ね22,オイルダンパ23を用いて振動系を構成した対
策1では、所定の振動抑制効果を得るためには、巨大な
マス21で構成される制振装置が必要となり、重量面、
コスト面などにおいても問題が多い。
In the first measure in which the vibration system is constructed by using the mass 21, the spring 22, and the oil damper 23 described above, in order to obtain a predetermined vibration suppressing effect, the mass 21 is composed of a huge mass 21. A vibration control device that requires
There are many problems in terms of cost.

【0006】また、マス21とアクチュエータ24を用
いた前記対策2による場合は大きなマス21をアクチュ
エータ24で作動させる必要があり、多大なエネルギー
が必要となり、コスト面からも問題である。
Further, in the case of the countermeasure 2 using the mass 21 and the actuator 24, the large mass 21 needs to be operated by the actuator 24, which requires a large amount of energy, which is also a problem in terms of cost.

【0007】本発明は、制振のための巨大なマスや多大
なエネルギー消費を必要とせずに、風外力による構造物
の振動を低減させることができる制振装置を提供するこ
とを課題としている。
SUMMARY OF THE INVENTION An object of the present invention is to provide a vibration damping device capable of reducing the vibration of a structure due to an external wind force without requiring a huge mass for vibration damping or a large amount of energy consumption. .

【0008】[0008]

【課題を解決するための手段】本発明は、前記した課題
を解決するため、風向に応じてモータ等により回転する
ダクトを構造物に設置し、そのダクトで構造物に作用す
る風を縮流させ、その吹き出し方向を能動的あるいは受
動的に制御し、流れ出る風の力を利用し、振動を抑制す
る制振力として用いる。
In order to solve the above-mentioned problems, the present invention installs a duct that rotates by a motor or the like according to the wind direction in a structure, and reduces the wind that acts on the structure by the duct. Then, the blowing direction is actively or passively controlled, and the force of the flowing wind is used to suppress the vibration.

【0009】そのため、本発明による制振装置は、開口
方向を変更可能にして構造物に取付けられ、構造物に作
用する風を縮流させるダクトと、このダクトで縮流され
た風を構造物の風による振動を抑制するように吹き出し
方向を変更するゲートと、構造物に作用する風の方向を
検出する風向計と、同風向計で検出された風に向け前記
したダクトの開口方向を変えるダクト回転手段とを設け
た構成とする。
Therefore, the vibration damping device according to the present invention is attached to a structure such that the opening direction can be changed, and a duct for reducing the air flow acting on the structure, and the wind compressed by the duct. The gate to change the blowing direction so as to suppress the vibration due to the wind, the wind vane that detects the direction of the wind that acts on the structure, and the opening direction of the duct that is directed toward the wind detected by the wind vane. A duct rotating means is provided.

【0010】本発明による制振装置におけるゲートは、
構造物の振動を検出するセンサーによりコントロールさ
れる能動型のモータ駆動方式としても、或いは回転ばね
等を設けた受動型のばね方式としてもよい。
The gate in the vibration damping device according to the present invention is
An active motor drive system controlled by a sensor that detects vibration of a structure or a passive spring system provided with a rotary spring or the like may be used.

【0011】[0011]

【作用】本発明による制振装置は前記した構成を有して
おり、ビル等の構造物に設置されたダクトは風向計によ
り常に風上方向を向くように回転され、作用する風外力
はダクト内で縮流される。縮流された風は、ゲートによ
り吹き出る方向が制御され、振動を抑制するように制振
力として用いられる。
The vibration damping device according to the present invention has the above-mentioned structure, and the duct installed in the structure such as a building is rotated by the wind vane so as to always face the windward direction, and the external wind force acting is applied to the duct. Is contracted within. The compressed air is used as a damping force so that the gate controls the blowing direction and suppresses the vibration.

【0012】風の吹き出し方向を変えるゲートを、能動
型のモータ方式のゲート作動機構を有するものとしたも
のでは、そのゲートは構造物の振動を検出するセンサー
に応じてコントロールされ、ゲート用回転モータで駆動
される。
If the gate for changing the blowing direction of the wind has an active motor type gate actuation mechanism, the gate is controlled by a sensor for detecting the vibration of the structure, and the rotary motor for the gate is used. Driven by.

【0013】また、そのゲートを受動型のばね方式のゲ
ート作動機構をもつものにすれば、それは回転ばね等で
支持されたゲートの振動数を構造物の振動数に一致さ
せ、構造物が振動することによりゲートも振動する機構
であり、ゲート用モータの必要の無い機構となる。
If the gate has a passive spring type gate actuating mechanism, it makes the frequency of the gate supported by a rotating spring or the like match the frequency of the structure, and the structure vibrates. By doing so, the gate also vibrates, and the mechanism does not require a gate motor.

【0014】[0014]

【実施例】以下、本発明による風外力利用制振装置を図
1〜図8により具体的に説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The vibration control device utilizing wind force according to the present invention will be described in detail below with reference to FIGS.

【0015】(第1実施例)まず、図1〜図11によ
り、第1実施例による制振装置について説明する。図1
〜図4に示すように、本実施例による制振装置では、ビ
ル4に作用する風を縮流させるダクト1がビル4の頂部
にコロ2に載せて設置されている。12はビル4に作用
する風の向きを検出する風向計である。
(First Embodiment) First, a vibration damping device according to the first embodiment will be described with reference to FIGS. FIG.
As shown in FIG. 4, in the vibration damping device according to the present embodiment, the duct 1 for contracting the wind that acts on the building 4 is installed on the roller 2 on the top of the building 4. Reference numeral 12 is an anemoscope that detects the direction of the wind acting on the building 4.

【0016】本実施例による制振装置では、そのシステ
ム構成を図6に示すように、風向計12の信号はアンプ
14,コントローラ18,ダクト用モータドライブ19
を介してダクト用回転モータ3に伝えられ、ダクト1の
開口部5が常に風上を向くように回転させられる。ビル
4に作用する風はこうしてダクト1内に取り込まれて縮
流される。ダクト1は下流において左右に分岐され、そ
の分岐点にピン8まわりに回動自在にゲート6が支持さ
れている。7はゲート6のサポートである。
In the vibration damping device according to the present embodiment, as shown in the system configuration of FIG. 6, the signals of the wind vane 12 are the amplifier 14, the controller 18, the duct motor drive 19 and the like.
Is transmitted to the duct rotation motor 3 via the, and the opening 5 of the duct 1 is rotated so as to always face upwind. The wind acting on the building 4 is thus taken into the duct 1 and contracted. The duct 1 is branched leftward and rightward, and a gate 6 is rotatably supported around a pin 8 at the branch point. Reference numeral 7 is a support for the gate 6.

【0017】ビル4には加速度計13が取付けられてお
り、図6に示すようにこの加速度計13で検出されるビ
ルの振動は、加速度計用アンプ15を経てゲート用回転
モータコントローラ16に送られ、ゲート用回転モータ
・ドライブ17を作動させてゲート用回転モータ9をピ
ン8まわりに回転させ、ダクト1内で縮流された風を下
流の分岐ダクトの左右に吹き出させて、その吹き出し力
によりビル4に制振力を作用させる。その様子が図9に
示してある。
An accelerometer 13 is attached to the building 4, and as shown in FIG. 6, vibration of the building detected by the accelerometer 13 is sent to a gate rotation motor controller 16 via an accelerometer amplifier 15. The gate rotary motor drive 17 is operated to rotate the gate rotary motor 9 around the pin 8 to blow out the wind contracted in the duct 1 to the left and right of the downstream branch duct, and its blowing force. The damping force acts on the building 4. This is shown in FIG.

【0018】なお、前記した風向計12によるダクト1
の方向制御のフローは図7に示すとおりであり、また、
加速度計13によるゲート6の切り替え制御のフローは
図8に示すとおりである。図10に本風外力利用制振装
置の効果を示す。ゲート6の動きに応じて制振力が発生
し、構造物(ビル4)の応答が抑制される。
The duct 1 using the anemoscope 12 described above.
The flow of the direction control of is as shown in FIG.
The flow of switching control of the gate 6 by the accelerometer 13 is as shown in FIG. FIG. 10 shows the effect of the vibration control device utilizing the external wind force. A damping force is generated according to the movement of the gate 6, and the response of the structure (building 4) is suppressed.

【0019】(第2実施例)次に、図11〜図13によ
り第2実施例による制振装置について説明する。この第
2実施例による制振装置では、ゲート6を受動型のばね
方式としたものである。すなわち、本第2実施例では、
図11に示すように、ゲート6は回転ばね10により支
持され、その振動数はビルの振動数に同調されており、
ビル4の振動に応じて振動し、その振動の位相関係は第
1実施例においてゲート用モータ3で作動させた場合と
一致する。なお、11は回転ばね固定治具である。
(Second Embodiment) Next, a vibration damping device according to a second embodiment will be described with reference to FIGS. 11 to 13. In the vibration damping device according to the second embodiment, the gate 6 is of a passive spring type. That is, in the second embodiment,
As shown in FIG. 11, the gate 6 is supported by a rotary spring 10, and its frequency is tuned to the frequency of the building.
It vibrates according to the vibration of the building 4, and the phase relationship of the vibration is the same as that when the gate motor 3 is operated in the first embodiment. Reference numeral 11 is a rotary spring fixing jig.

【0020】本実施例の場合のシステム構成は図12に
示すように、ダクト1の向きを変えるダクト用回転モー
タ3の制御のみであり、ダクト1内のゲート6はビル4
の振動で受動的に回動される。本実施例におけるゲート
制御のフローは図13に示すとおりであり、その制振効
果は図10に示した第1実施例の場合と同様である。
As shown in FIG. 12, the system configuration of this embodiment is only for controlling the duct rotary motor 3 which changes the direction of the duct 1, and the gate 6 in the duct 1 is the building 4
It is turned passively by the vibration of. The flow of the gate control in this embodiment is as shown in FIG. 13, and the vibration damping effect is the same as in the case of the first embodiment shown in FIG.

【0021】[0021]

【発明の効果】以上のとおり、本発明によれば、構造物
に風を縮流させるダクトと、構造物の風による振動を抑
制するようにその縮流された風の吹き出し方向を変更す
るゲートを用いた風外力利用制振装置を構成することに
より、風外力を制振力として用い構造物の振動を低減さ
せることができる。
As described above, according to the present invention, the duct for reducing the flow of wind in the structure and the gate for changing the blowing direction of the reduced wind so as to suppress the vibration of the structure due to the wind. By constructing the vibration control device using the wind outside force, the vibration of the structure can be reduced by using the wind outside force as the vibration damping force.

【0022】本発明による制振装置では構造物に作用す
る風外力を制振力として用いるため、採用する可動機構
(ゲート)が小さく、エネルギー的に高効率のシステム
で制振できる。このように、可動機構(ゲート)が小さ
く、全体重量が小さくなるため、システム的に低コスト
である。
In the vibration damping device according to the present invention, since the wind external force acting on the structure is used as the vibration damping force, the movable mechanism (gate) adopted is small, and the vibration can be damped by a highly energy efficient system. In this way, the movable mechanism (gate) is small, and the overall weight is small, so the system is low in cost.

【0023】ゲートの駆動機構として、モータ駆動の場
合には、任意の振動数にゲートを作動させることが可能
であり、構造物の任意の振動に対応ができる。また、対
象構造物の振動数が固定の場合には、ゲートをばねを用
いた振動系にすることにより、ゲートの作動機構に電源
が不要で、さらに小エネルギーの制振システムとなる。
In the case of driving the motor as a gate drive mechanism, the gate can be operated at an arbitrary frequency, and the structure can be adapted to any vibration. In addition, when the frequency of the target structure is fixed, by making the gate a vibration system using a spring, a power supply is not required for the operating mechanism of the gate, and a vibration control system of smaller energy is obtained.

【0024】更に、本発明による制振装置では、ダクト
により風の静的成分を制振力として用いるため、風と特
性、つまり動的な乱れについては全く影響を受けること
なく効果があり、ダクトは風向きに応じて回転するた
め、任意の風向に対して制振可能である。また、ダクト
は構造物に取付けるだけであるため、既存の構造物にも
容易に設置できる。
Further, in the vibration damping device according to the present invention, since the static component of the wind is used as the vibration damping force by the duct, there is no effect on the wind and the characteristic, that is, the dynamic turbulence, and the duct is effective. Can rotate in any wind direction because it rotates according to the wind direction. Further, since the duct is simply attached to the structure, it can be easily installed in the existing structure.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の第1実施例に係る風外力利用制振装置
の概要図。
FIG. 1 is a schematic view of a vibration damping device using wind external force according to a first embodiment of the present invention.

【図2】図1に示した風外力利用制振装置の正面図。FIG. 2 is a front view of the vibration damping device using wind external force shown in FIG.

【図3】図1に示した風外力利用制振装置の側面図。FIG. 3 is a side view of the vibration damping device using external wind force shown in FIG. 1.

【図4】第1図のA−A線に沿う断面図。4 is a sectional view taken along the line AA of FIG.

【図5】第1実施例の制振装置におけるゲート駆動機構
の詳細を示す断面図。
FIG. 5 is a cross-sectional view showing details of a gate drive mechanism in the vibration damping device of the first embodiment.

【図6】第1実施例による風外力利用制振装置のシステ
ム構成図。
FIG. 6 is a system configuration diagram of a vibration damping device using external wind force according to the first embodiment.

【図7】第1実施例の風外力利用制振装置におけるダク
トの方向制御のフローを示す説明図。
FIG. 7 is an explanatory diagram showing a flow of direction control of a duct in the vibration damping device using wind external force according to the first embodiment.

【図8】第1実施例の風外力利用制振装置におけるゲー
ト制御のフローを示す説明図。
FIG. 8 is an explanatory view showing a flow of gate control in the vibration damping device using wind external force according to the first embodiment.

【図9】本発明による風外力利用制振装置における制振
力発生の原理を示す説明図で(a)と(b)はそれぞれ
異る方向に制振力を生じている状態を示している。
9 (a) and 9 (b) are explanatory views showing the principle of the damping force generation in the vibration damping device utilizing wind force according to the present invention, and FIGS. 9 (a) and 9 (b) show a state in which the damping force is generated in different directions. .

【図10】本発明による制振装置の制振効果を示す線
図。
FIG. 10 is a diagram showing a damping effect of the damping device according to the present invention.

【図11】本発明の第2実施例による風外力利用制振装
置の構成を示す断面図で、(a)は縦方向断面図、
(b)は水平方向断面図。
FIG. 11 is a sectional view showing the structure of a vibration damping device using wind force according to a second embodiment of the present invention, in which (a) is a longitudinal sectional view;
(B) is a horizontal sectional view.

【図12】第2実施例による風外力利用制振装置のシス
テム構成図。
FIG. 12 is a system configuration diagram of a vibration damping device using external wind force according to a second embodiment.

【図13】第2実施例の風外力利用制振装置におけるゲ
ート制御のフローを示す説明図。
FIG. 13 is an explanatory view showing a flow of gate control in the vibration damping device using wind external force according to the second embodiment.

【図14】従来の制振対策(対策1)を示す説明図。FIG. 14 is an explanatory diagram showing a conventional damping measure (countermeasure 1).

【図15】従来の制振対策(対策2)を示す説明図。FIG. 15 is an explanatory diagram showing a conventional damping measure (countermeasure 2).

【符号の説明】[Explanation of symbols]

1 ダクト 2 コロ 3 ダクト用回転モータ 4 ビル 5 開口部 6 ゲート 7 サポート 8 ピン 9 ゲート用回転モータ 10 回転ばね 11 回転ばね用固定治具 12 風向計 13 加速度計(センサー) 14 風向計用アンプ 15 加速度計用アンプ 16 ゲート用回転モータコントローラ 17 ゲート用回転モータ・ドライブ 18 ダクト用モータコントローラ 19 ダクト用モータドライブ 25 風 26 制振力 1 duct 2 roller 3 rotary motor for duct 4 building 5 opening 6 gate 7 support 8 pin 9 rotary motor for gate 10 rotary spring 11 fixing jig for rotary spring 12 wind vane 13 accelerometer (sensor) 14 wind vane amplifier 15 Accelerometer amplifier 16 Rotary motor controller for gates 17 Rotary motor drive for gates 18 Motor controller for ducts 19 Motor drive for ducts 25 Wind 26 Damping force

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 開口方向を変更可能にして構造物に取付
けられ、同構造物に作用する風を縮流させるダクトと、
同ダクトで縮流された風を前記構造物の風による振動を
抑制するように吹き出し方向を変更するゲートと、前記
構造物に作用する風の方向を検出する風向計と、同風向
計で検出された風に向け前記ダクトの開口方向を変える
ダクト回転手段とを有することを特徴とする風外力利用
制振装置。
1. A duct which is attached to a structure such that an opening direction thereof can be changed, and which reduces a wind that acts on the structure,
The wind contracted in the duct is changed by the gate to change the blowing direction so as to suppress the vibration of the structure, the wind vane that detects the direction of the wind acting on the structure, and the wind vane. And a duct rotating means for changing the opening direction of the duct toward the generated wind.
JP1687595A 1995-02-03 1995-02-03 Wind external force utilizing vibration control device Pending JPH08210434A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1687595A JPH08210434A (en) 1995-02-03 1995-02-03 Wind external force utilizing vibration control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1687595A JPH08210434A (en) 1995-02-03 1995-02-03 Wind external force utilizing vibration control device

Publications (1)

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JPH08210434A true JPH08210434A (en) 1996-08-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP1687595A Pending JPH08210434A (en) 1995-02-03 1995-02-03 Wind external force utilizing vibration control device

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JP (1) JPH08210434A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2457225A (en) * 2007-12-06 2009-08-12 Edward Mortimore Rose Water deflection device for buildings
JP2010242453A (en) * 2009-04-09 2010-10-28 Nishi Nippon Ryutai Giken:Kk Device for reducing oscillation of floating pier and floating pier using the device, and method for reducing oscillation
CN114086809A (en) * 2021-12-02 2022-02-25 哈尔滨工业大学 Blunt body wind-induced vibration control device based on structured porous surface active air suction

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2457225A (en) * 2007-12-06 2009-08-12 Edward Mortimore Rose Water deflection device for buildings
GB2457225B (en) * 2007-12-06 2010-06-09 Edward Mortimore Rose Weather deflection device
JP2010242453A (en) * 2009-04-09 2010-10-28 Nishi Nippon Ryutai Giken:Kk Device for reducing oscillation of floating pier and floating pier using the device, and method for reducing oscillation
CN114086809A (en) * 2021-12-02 2022-02-25 哈尔滨工业大学 Blunt body wind-induced vibration control device based on structured porous surface active air suction
CN114086809B (en) * 2021-12-02 2022-12-27 哈尔滨工业大学 Blunt body wind-induced vibration control device based on structured porous surface active air suction

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