JPH04272312A - Active vibration control type marine structure - Google Patents
Active vibration control type marine structureInfo
- Publication number
- JPH04272312A JPH04272312A JP3086191A JP3086191A JPH04272312A JP H04272312 A JPH04272312 A JP H04272312A JP 3086191 A JP3086191 A JP 3086191A JP 3086191 A JP3086191 A JP 3086191A JP H04272312 A JPH04272312 A JP H04272312A
- Authority
- JP
- Japan
- Prior art keywords
- floating
- damping
- marine structure
- vibration
- structure body
- 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 claims abstract description 112
- 238000007667 floating Methods 0.000 claims abstract description 48
- 238000000034 method Methods 0.000 abstract description 10
- 239000000463 material Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 210000002435 tendon Anatomy 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は海底地盤上に構築したり
、あるいはフローティング等を用いて洋上に浮遊可能と
した海洋構造物について、アクチュエーターまたは可変
減衰装置等の制振装置と、これを制御するコンピュータ
ー等を用いた制御手段を設け、風、波、地震等の外乱に
対する揺れを防止した能動型制振海洋構造物に関するも
のである。海洋構造物としては例えば石油掘削リグ、あ
るいはフィッシングレストラン、水中展望塔等の海洋レ
ジャー施設等がある。[Industrial Application Field] The present invention relates to a vibration damping device such as an actuator or a variable damping device, and a control system for marine structures built on the seabed or made floating on the ocean using floating technology. This invention relates to an active vibration-damping offshore structure that is equipped with a control means using a computer or the like to prevent shaking due to external disturbances such as wind, waves, and earthquakes. Examples of marine structures include oil drilling rigs, fishing restaurants, underwater observation towers, and other marine leisure facilities.
【０００２】0002
【従来の技術】出願人は構造物の柱梁架構内に、ブレー
スや壁等の形で可変剛性要素（耐震要素）を組み込み、
可変剛性要素自体の剛性、あるいは架構本体と可変剛性
要素との連結状態を可変とし、地震や風等の振動外力に
対し、その特性をコンピューターにより解析して、非共
振となるよう構造物の剛性を変化させて構造物の安全を
図る能動的制震システム、可変剛性構造等を種々開発し
ている（例えば特開昭６２−２６８４７９号、特開昭６
３−１１４７７０号、特開昭６３−１１４７７１号等）
。[Prior Art] The applicant has incorporated variable stiffness elements (earthquake-resistant elements) in the form of braces, walls, etc. into the column-beam frame of a structure.
The rigidity of the variable rigidity element itself or the connection state between the frame body and the variable rigidity element is made variable, and its characteristics are analyzed by computer against vibrational external forces such as earthquakes and wind, and the rigidity of the structure is determined so that it does not resonate. Various active damping systems and variable rigidity structures have been developed to improve the safety of structures by changing the
3-114770, JP-A-63-114771, etc.)
.
【０００３】また、装置の減衰係数を可変とした油圧式
の制震装置を用い、構造物の非共振性や減衰性を考慮し
た種々の能動型制震システムを提案している（例えば特
開平２−２０９５６８〜７１号等）。[0003] In addition, various active damping systems have been proposed that take into consideration the non-resonance and damping properties of structures, using hydraulic damping devices with variable damping coefficients (for example, Japanese Patent Laid-Open Publication No. 2-209568 to 71, etc.).
【０００４】さらに、これらの能動型制震システムに利
用可能な制震装置として、例えば特願平２−３７９９２
号のシリンダーロック装置や、特願平２−４２０７８号
の制震構造物用可変減衰装置等がある。Furthermore, as a vibration damping device that can be used in these active vibration damping systems, for example, Japanese Patent Application No. 2-37992 discloses
These include the cylinder lock device of No. 1, and the variable damping device for vibration damping structures of Japanese Patent Application No. 2-42078.
【０００５】上記シリンダーロック装置の基本原理は、
シリンダー本体内の両ロッド形ピストンの両側に油圧室
を設け、両油圧室内の圧油を切換弁により閉止し、また
は流動させることにより、前記ピストンを固定し、また
は移動自在とするものである。The basic principle of the cylinder lock device is as follows:
Hydraulic chambers are provided on both sides of both rod-shaped pistons in the cylinder body, and the pistons are fixed or movable by closing the pressure oil in the two hydraulic chambers using switching valves or by allowing them to flow.
【０００６】シリンダーロック装置を能動型制震システ
ムに用いる場合には、構造物の柱梁架構内に可変剛性要
素を設け、柱梁架構と前記可変剛性要素（または可変剛
性要素どうし）の一方にシリンダー本体を連結し、他方
にロッドを連結する。切換弁を全開した状態では実質的
に圧油の移動が自由であり、シリンダーロック装置の減
衰係数は最小値ｃｍｉｎ をとる。このとき、柱梁架構
と可変剛性要素の相対移動も実質的に自由である。切換
弁を閉止した状態では実質的に圧油の移動がなく（必ず
しも完全に閉止する必要はない）、シリンダーロック装
置の減衰係数は最大値ｃｍａｘ をとる。このとき、柱
梁架構と可変剛性要素は実質的に固定された状態または
固定に近い状態となる。また、上記可変減衰装置はシリ
ンダーロック装置における切換弁の開度を調整し得るよ
うにしたもので、装置の減衰係数を多段階または無段階
に変化させることができる。When the cylinder lock device is used in an active damping system, a variable stiffness element is provided within the column and beam frame of the structure, and one of the column and beam frame and the variable stiffness element (or the variable stiffness elements) is Connect the cylinder bodies and connect the rod to the other. When the switching valve is fully open, the pressure oil is substantially free to move, and the damping coefficient of the cylinder lock device takes the minimum value cmin. At this time, relative movement between the column-beam frame and the variable rigidity element is also substantially free. When the switching valve is closed, there is virtually no movement of pressure oil (it does not necessarily have to be completely closed), and the damping coefficient of the cylinder lock device takes the maximum value cmax. At this time, the column-beam frame and the variable rigidity element are substantially fixed or nearly fixed. Furthermore, the variable damping device described above is capable of adjusting the opening degree of the switching valve in the cylinder lock device, and can change the damping coefficient of the device in multiple stages or steplessly.
【０００７】この他、出願人は特願平２−２８０７１２
号において、高い減衰係数を有する高減衰装置の減衰係
数を構造物の固有振動モードに応じた所定の減衰係数に
設定し、受動的な制震を実現する高減衰構造物を提案し
ている。[0007] In addition, the applicant has filed Japanese Patent Application No. 2-280712.
In this paper, we propose a high-damping structure that realizes passive vibration damping by setting the damping coefficient of a high-damping device having a high damping coefficient to a predetermined damping coefficient according to the natural vibration mode of the structure.
【０００８】[0008]
【発明が解決しようとする課題】ところで、海洋構造物
を考えた場合、外乱としては風、地震の他、波浪の影響
が大きい。特に浮遊形式の海洋構造物では構造物本体の
架構内に設けた制振装置で振動を制御することは困難で
ある。[Problems to be Solved by the Invention] When considering offshore structures, external disturbances include wind, earthquakes, and waves. Particularly in the case of floating marine structures, it is difficult to control vibrations using a vibration damping device installed within the frame of the structure itself.
【０００９】本発明は風、地震、波浪等の外乱による振
動を能動的に制御でき、外乱に対する揺れの少ない安全
な海洋構造物を提供することを目的としたものである。An object of the present invention is to provide a safe marine structure that can actively control vibrations caused by external disturbances such as wind, earthquakes, waves, etc., and has less shaking due to external disturbances.
【００１０】0010
【課題を解決するための手段】本発明は油圧シリンダー
等のアクチュエーターまたは可変減衰装置と、これらを
制御するためのコンピューター等を用いた制御手段とを
設け、海洋構造物の外乱による振動を制御できるように
したものである。[Means for Solving the Problems] The present invention provides an actuator such as a hydraulic cylinder or a variable damping device, and a control means using a computer or the like to control these, and can control vibrations caused by disturbances of marine structures. This is how it was done.
【００１１】アクチュエーターまたは可変減衰装置は、
浮遊形式の海洋構造物の場合には緊張材等からなる係留
手段、または係留手段と構造物本体間に設けることがで
きる。また、構造物本体と別体のフローティングを設け
る場合には、アクチュエーターまたは可変減衰装置を構
造物本体とフローティング間、あるいは複数に分割した
フローティング間に設置することもできる。The actuator or variable damping device is
In the case of a floating marine structure, a mooring means made of tension material or the like or between the mooring means and the structure body can be provided. Further, when a floating body separate from the structure body is provided, an actuator or a variable damping device can be installed between the structure body and the floating body, or between the floating body divided into a plurality of parts.
【００１２】また、アクチュエーターまたは可変減衰装
置と並列に空気バネ、その他のバネ手段を設けることに
より、安定的な接続状態において、アクチュエーターま
たは可変減衰装置を効果的に機能させることができる。Furthermore, by providing an air spring or other spring means in parallel with the actuator or variable damping device, the actuator or variable damping device can function effectively in a stable connection state.
【００１３】浮遊形式の海洋構造物では風および波浪に
よる影響が大きく、構造物本体、係留手段の所定位置、
フローティング等の必要箇所に設けたセンサー（例えば
加速度計等）によって得られた振動をコンピューター等
で解析し、アクチュエーターの作動（制御力）を制御し
たり、あるいは可変減衰装置の減衰係数を制御すること
により、海洋構造物の振動を抑制することができる。[0013] Floating marine structures are greatly affected by wind and waves, and the main body of the structure, the predetermined position of the mooring means,
Using a computer, etc., to analyze vibrations obtained by sensors (e.g. accelerometers, etc.) installed at necessary locations such as floating devices, and control the operation (control force) of actuators or the damping coefficient of variable damping devices. This makes it possible to suppress vibrations of marine structures.
【００１４】石油掘削リグ、水中展望塔等で構造物本体
を海底地盤上に構築する形式の海洋構造物では、風や波
浪だけでなく地震による振動も抑制することが望ましく
、従来の地上の構造物における制振と同様、構造物本体
の架構内に架構構成要素間に可変減衰装置を設け、構造
物本体の振動に応じて減衰装置の減衰係数を能動的に制
御することにより構造物本体の振動を抑制することがで
きる。また、可変減衰装置の代わりに油圧シリンダー等
のアクチュエーターを用い、架構構成要素間に制御力を
発生させるものでもよい。[0014] For offshore structures such as oil drilling rigs and underwater observation towers, where the main body of the structure is constructed on the seabed, it is desirable to suppress not only wind and wave vibrations but also vibrations caused by earthquakes. Similar to vibration damping in objects, a variable damping device is installed between the frame components within the frame of the structure body, and the damping coefficient of the damping device is actively controlled according to the vibration of the structure body. Vibration can be suppressed. Furthermore, instead of the variable damping device, an actuator such as a hydraulic cylinder may be used to generate a control force between the frame components.
【００１５】具体的な制御方法に関しては、油圧シリン
ダー等のアクチュエーターを用いる場合には、直接振動
を抑える方向の制御力を働かせればよい。Regarding a specific control method, when an actuator such as a hydraulic cylinder is used, it is sufficient to apply a control force in the direction of directly suppressing vibration.
【００１６】可変減衰装置を用いる場合には、例えば以
下のような制御方法を利用することかできる。When using a variable attenuation device, the following control method can be used, for example.
【００１７】■ 可変減衰装置をフリーに近い状態（
減衰係数が小さい状態）と、ロックに近い状態（減衰係
数が大きい状態）との間で切り換える形で制御し、外乱
に対する非共振を図る方法。■ Put the variable damping device in a nearly free state (
A method of controlling by switching between a state (with a small damping coefficient) and a near-lock state (with a large damping coefficient) to eliminate resonance against disturbances.
【００１８】■ 特開平２−２４０３４０号公報記載
の制震システムのように、振動レベルに応じ、低振動レ
ベルでは大きな減衰係数を与え、できるだけ大きな減衰
力を働かせ、高振動レベルでは非共振を図る方法。[0018] ■ Like the vibration control system described in Japanese Patent Application Laid-open No. 2-240340, a large damping coefficient is applied at low vibration levels to exert as large a damping force as possible depending on the vibration level, and non-resonance is achieved at high vibration levels. Method.
【００１９】■ 特開平２−２０９５６９号公報記載
の制震システムのように、複数の振動レベルを想定し、
各振動レベルで最適な減衰性が得られるよう可変減衰装
置の減衰係数を制御する方法。■ Like the vibration control system described in Japanese Patent Application Laid-open No. 2-209569, multiple vibration levels are assumed,
A method of controlling the damping coefficient of a variable damping device to obtain the optimum damping performance at each vibration level.
【００２０】■ 特開平２−２０９５６８号公報また
は特開平２−２０９５７０号公報記載の制震システムの
ように、非共振性と減衰性を複合的に判断して、外乱の
特性に応じて可変減衰装置の減衰係数を選定し、制御す
る方法。[0020] ■ Like the damping system described in JP-A-2-209568 or JP-A-2-209570, non-resonance and damping properties are judged in a composite manner, and variable damping is performed according to the characteristics of the disturbance. How to select and control the damping coefficient of a device.
【００２１】■ 特開平２−２０９５７１号公報記載
の制震システムのように、可変減衰装置によって与えら
れる制御力に着目し、この制御力を制御する方法。(2) A method of controlling the control force by focusing on the control force provided by the variable damping device, such as the vibration damping system described in JP-A-2-209571.
【００２２】なお、上記■の方法は特に地震等の非定常
振動に対し有効であり、また■の方法は油圧シリンダー
等のアクチュエーターによる制御に近いものとなる。[0022] The above method (2) is particularly effective against unsteady vibrations such as earthquakes, and the method (2) is similar to control using an actuator such as a hydraulic cylinder.
【００２３】[0023]
【実施例】以下、図示した実施例について説明する。[Embodiment] The illustrated embodiment will be explained below.
【００２４】図１は本発明の一実施例を示したものであ
る。FIG. 1 shows an embodiment of the present invention.
【００２５】本実施例の海洋構造物Ａはフローティング
２により構造物本体１を海面上に浮上させ、ＰＣ鋼棒、
またはケーブル等の緊張材３で所定位置に係留している
。[0025] In the marine structure A of this embodiment, the structure main body 1 is floated above the sea surface by the floating 2, and the PC steel rods,
Alternatively, it is moored at a predetermined position with a tension member 3 such as a cable.
【００２６】緊張材３の途中には制振装置としての可変
減衰装置４がバネ５と並列に設けられている。可変減衰
装置４を緊張材３の途中に介在させたことで、波浪や風
により構造物本体１が振動すると、その振動が緊張材３
に伝わり、緊張材３間を連結する可変減衰装置４の減衰
係数に応じた抵抗力が発生する。なお、図中バネ５はコ
イルスプリングとして示してあるが、必ずしもコイル状
のものを意味するのではなく、緊張材３に比べ弾性係数
の大きいものを意味している。A variable damping device 4 as a vibration damping device is provided in the middle of the tension material 3 in parallel with the spring 5. By interposing the variable damping device 4 in the middle of the tendon material 3, when the structure body 1 vibrates due to waves or wind, the vibration is transmitted to the tendon material 3.
, and a resistance force corresponding to the damping coefficient of the variable damping device 4 connecting the tension members 3 is generated. Although the spring 5 is shown as a coil spring in the figure, this does not necessarily mean that it is coil-shaped, but rather that it has a larger elastic modulus than the tension material 3.
【００２７】可変減衰装置４は主として緊張材３に緊張
力が作用する浮き上がり時に機能するため、複数、放射
状に設けるのが好ましい。[0027] Since the variable damping devices 4 mainly function when a tension force is applied to the tension material 3 when it is lifted up, it is preferable to provide a plurality of variable damping devices 4 radially.
【００２８】また、本実施例ではフローティング２の下
方の水中に第２のフローティング７を設け、フローティ
ング２と第２のフローティング７との間にも可変減衰装
置４ａと、バネ５ａを設けている。Further, in this embodiment, a second floating 7 is provided in the water below the floating 2, and a variable damping device 4a and a spring 5a are also provided between the floating 2 and the second floating 7.
【００２９】緊張材３の途中に設けた可変減衰装置４は
構造物本体１の回転方向の振動も制御しているのに対し
、フローティング２の下方の可変減衰装置４ａは主とし
て構造物本体１の鉛直方向の沈み込み時に機能する。The variable damping device 4 provided in the middle of the tension member 3 also controls vibrations in the rotational direction of the structure body 1, whereas the variable damping device 4a below the floating member 2 mainly controls the vibration of the structure body 1. It functions when sinking in the vertical direction.
【００３０】図中、６はフローティング２に取り付けた
センサー（普通は複数のセンサー）であり、センサー２
により構造物本体１の傾き、上下動、水平動を検知し、
これを構造物本体１内等に設けたコンピューター等の制
御手段で解析し、可変減衰装置４，４ａの減衰係数を制
御し、構造物本体１の振動を抑制する。In the figure, 6 is a sensor (usually a plurality of sensors) attached to the floating 2.
detects the inclination, vertical movement, and horizontal movement of the structure body 1,
This is analyzed by a control means such as a computer provided within the structure body 1, and the damping coefficients of the variable damping devices 4, 4a are controlled to suppress the vibration of the structure body 1.
【００３１】本実施例では構造物本体１とフローティン
グ２が一体であるため、フローティング２にセンサーを
取り付けているが、もちろん構造物本体に取り付けても
よい。また、コンピューター等の制御手段は海洋構造物
外に設けられていてもかまわない。さらに、本実施例で
は可変減衰装置４を用いているが、制振装置として油圧
シリンダー等を用い、直接制御力を与えてもよい。In this embodiment, since the structure body 1 and the floating 2 are integrated, the sensor is attached to the floating 2, but it may of course be attached to the structure body. Further, the control means such as a computer may be provided outside the marine structure. Furthermore, although the variable damping device 4 is used in this embodiment, a hydraulic cylinder or the like may be used as the vibration damping device to directly apply the control force.
【００３２】図２は本発明の他の実施例を示したもので
ある。FIG. 2 shows another embodiment of the invention.
【００３３】本実施例の海洋構造物Ｂはフローティング
１２により構造物本体１１を海面上に浮上させ、フロー
ティング部分を索１３により岸壁に係留している。本実
施例では可変減衰装置１４をフローティング１２と構造
物本体１１との間に設け、可変減衰装置１４と、これと
並列に設けた空気バネ１５とで、構造物本体１１を支持
している。In the marine structure B of this embodiment, the main body 11 of the structure is floated above the sea surface by a floating member 12, and the floating portion is moored to a quay wall by a cable 13. In this embodiment, a variable damping device 14 is provided between the floating 12 and the structure main body 11, and the structure main body 11 is supported by the variable damping device 14 and an air spring 15 provided in parallel with the variable damping device 14.
【００３４】本実施例において、センサー１６は構造物
本体１１の頂部に設けられており、構造物本体１１の傾
き等を検知する。In this embodiment, the sensor 16 is provided at the top of the structure body 11, and detects the inclination of the structure body 11.
【００３５】図１の実施例と同様、可変減衰装置の代わ
りに油圧シリンダー等のアクチュエーターを用いてもよ
く、制御方法に関しても図１の実施例の場合と基本的に
同じである。可変減衰装置１４および空気バネ１５がフ
ローティング１２上に設けられているため、図１の実施
例の場合のように装置部分が水中に没している場合に比
べ、施工、調整やメンテナンスが容易である。Similar to the embodiment shown in FIG. 1, an actuator such as a hydraulic cylinder may be used instead of the variable damping device, and the control method is also basically the same as in the embodiment shown in FIG. Since the variable damping device 14 and the air spring 15 are provided on the floating 12, construction, adjustment, and maintenance are easier than in the case of the embodiment shown in FIG. 1, where the device parts are submerged in water. be.
【００３６】図３は本発明のさらに他の実施例を示した
ものである。FIG. 3 shows still another embodiment of the present invention.
【００３７】本実施例は海洋構造物Ｃが海底地盤上に構
築される場合であり、比較的水深が浅い場所に適してい
る。This embodiment is a case where the marine structure C is constructed on the seabed, and is suitable for a place where the water depth is relatively shallow.
【００３８】構造物本体２１の架構内に可変減衰装置２
４を設け、可変減衰装置２４によりブレース２２と梁２
３を連結している。構造的には従来の地上の能動型制震
構造物の場合と同様であるが、風および地震に加え波浪
を考慮する必要がある。A variable damping device 2 is installed within the frame of the structure body 21.
4 is provided, and the brace 22 and the beam 2 are connected by the variable damping device 24.
3 are connected. The structure is similar to that of conventional ground-based active damping structures, but it is necessary to consider waves in addition to wind and earthquakes.
【００３９】図では構造物本体２１の架構の各層に可変
減衰装置２４を設けているが、水深や構造物本体の高さ
等に応じ、地震、波浪、風の影響が異なり、通常水中部
分については可変減衰装置２４を省略するか、あるいは
個数を減らし、簡略化することが可能である。In the figure, a variable damping device 24 is provided on each layer of the frame of the structure body 21, but the effects of earthquakes, waves, and wind vary depending on the water depth, the height of the structure body, etc. It is possible to omit the variable attenuation device 24 or reduce its number to simplify the structure.
【００４０】[0040]
【発明の効果】■ 海洋構造物について、可変減衰装
置等を組み込んだ能動型の制振機構を設けることにより
、風、波浪、地震等による海洋構造物の振動を抑制し、
水平安定性を効率よく保つことができる。[Effects of the invention]■ By providing an active vibration damping mechanism incorporating a variable damping device for marine structures, vibrations of marine structures caused by wind, waves, earthquakes, etc. can be suppressed,
Horizontal stability can be maintained efficiently.
【００４１】■ 地震の影響の少ない浮遊形式の海洋
構造物においては、最も問題となる波浪および風に対し
、効果的な制御が可能であり、設置箇所の水深に関係な
く適用できる。[0041] In floating marine structures that are less affected by earthquakes, it is possible to effectively control waves and wind, which are the most problematic, and can be applied regardless of the water depth at the installation location.
【図１】本発明の一実施例を示す概要図である。FIG. 1 is a schematic diagram showing an embodiment of the present invention.
【図２】本発明の他の実施例を示す概要図である。FIG. 2 is a schematic diagram showing another embodiment of the invention.
【図３】本発明のさらに他の実施例を示す概要図である
。FIG. 3 is a schematic diagram showing still another embodiment of the present invention.
１…構造物本体、２…フローティング、３…緊張材、４
…可変減衰装置、５…バネ、６…センサー、７…第２の
フローティング、１１…構造物本体、１２…フローティ
ング、１３…索、１４…可変減衰装置、１５…空気バネ
、１６…センサー、２１…構造物本体、２２…ブレース
、２３…梁、２４…可変減衰装置1...Structure body, 2...Floating, 3...Tension material, 4
... Variable damping device, 5... Spring, 6... Sensor, 7... Second floating, 11... Structure body, 12... Floating, 13... Cable, 14... Variable damping device, 15... Air spring, 16... Sensor, 21 ...Structure body, 22...Brace, 23...Beam, 24...Variable damping device
Claims (11)
いて、前記海洋構造物本体を所定位置に係留するための
係留手段に対し、前記海洋構造物本体の振動を抑制する
ための制御力を前記海洋構造物本体と前記係留手段との
間に発生させるアクチュエーターと、前記制御力を前記
海洋構造物本体の振動に応じて能動的に制御する制御手
段とを設けたことを特徴とする能動型制振海洋構造物。1. A marine structure capable of floating on the ocean, in which a control force for suppressing vibration of the marine structure body is applied to a mooring means for mooring the marine structure body at a predetermined position. An active type control system comprising: an actuator that generates a force between the marine structure body and the mooring means; and a control means that actively controls the control force according to vibrations of the marine structure body. Wave marine structure.
した緊張材であり、前記アクチュエーターは前記緊張材
の途中に設けられている請求項１記載の能動型制振海洋
構造物。2. The active damping marine structure according to claim 1, wherein the mooring means is a tension member with one end anchored to the seabed, and the actuator is provided midway along the tension member.
るバネ手段を前記アクチュエーターと並列に設けてある
請求項２記載の能動型制振海洋構造物。3. The active vibration damping marine structure according to claim 2, wherein spring means having a predetermined elasticity is provided in the middle of the tension member in parallel with the actuator.
係数を可変とした可変減衰装置を設け、前記海洋構造物
本体の振動に応じて前記減衰装置の減衰係数を制御手段
により能動的に制御し、前記海洋構造物本体と前記係留
手段間の連結状態を制御可能としたことを特徴とする請
求項１、２または３記載の能動型制振海洋構造物。4. A variable damping device having a variable damping coefficient is provided in place of the actuator, and the damping coefficient of the damping device is actively controlled by a control means in accordance with the vibration of the marine structure body, 4. The active vibration damping marine structure according to claim 1, wherein the state of connection between the structure body and the mooring means can be controlled.
体を浮遊させるための第１フローティングが一体に設け
られており、前記第１フローティングの下方にはさらに
第２フローティングが設けられ、前記第１フローティン
グと第２フローティングの間には、前記海洋構造物本体
の振動を抑制するための制御力を前記第１フローティン
グと第２フローティングとの間に発生させるための第２
のアクチュエーターと、所定の弾性を有する第２のバネ
手段が並列に設けられている請求項３または４記載の能
動型制振海洋構造物。5. The marine structure main body is integrally provided with a first floating for floating the marine structure main body, a second floating is further provided below the first floating, and a second floating is further provided below the first floating, and a second floating is further provided below the first floating. Between the first floating and the second floating, a second floating for generating a control force between the first floating and the second floating for suppressing vibration of the marine structure main body.
5. The active damping marine structure according to claim 3, wherein the actuator and second spring means having a predetermined elasticity are provided in parallel.
において、前記第２のアクチュエーターの代わりに減衰
係数を可変とした可変減衰装置を設け、前記海洋構造物
本体の振動に応じて前記減衰装置の減衰係数を制御手段
により能動的に制御し、前記第１フローティングと第２
フローティングの間の連結状態を制御可能としたことを
特徴とする能動型制振海洋構造物。6. The active vibration damping marine structure according to claim 5, wherein a variable damping device with a variable damping coefficient is provided in place of the second actuator, and the vibration damping system according to the vibration of the marine structure body is provided with a variable damping device having a variable damping coefficient. The damping coefficient of the damping device is actively controlled by a control means, and the first floating and the second floating
An active vibration damping marine structure characterized by being able to control the connection state between floating structures.
洋上に浮遊可能とした海洋構造物において、前記構造物
本体の振動を抑制するための制御力を前記構造物本体と
前記フローティング間に発生させるアクチュエーターと
、前記制御力を前記構造物本体の振動に応じて能動的に
制御する制御手段とを設けたことを特徴とする能動型制
振海洋構造物。7. An actuator for generating a control force between the structure body and the floating structure to suppress vibrations of the structure body, in a marine structure in which a structure body can be floated on the ocean by providing floating. and a control means for actively controlling the control force according to vibrations of the structure body.
間に所定の弾性を有するバネ手段を前記アクチュエータ
ーと並列に設けてある請求項７記載の能動型制振海洋構
造物。8. The active damping marine structure according to claim 7, further comprising spring means having a predetermined elasticity provided between the structure body and the floating body in parallel with the actuator.
洋構造物において、前記アクチュエーターの代わりに減
衰係数を可変とした可変減衰装置を設け、前記構造物本
体の振動に応じて前記減衰装置の減衰係数を制御手段に
より能動的に制御し、前記構造物本体と前記フローティ
ング間の連結状態を制御可能としたことを特徴とする能
動型制振海洋構造物。9. The active vibration damping marine structure according to claim 7 or 8, wherein a variable damping device with a variable damping coefficient is provided in place of the actuator, and the damping device 1. An active damping marine structure, characterized in that a damping coefficient of the structure is actively controlled by a control means, and a state of connection between the structure body and the floating can be controlled.
なる海洋構造物において、前記構造物本体の架構内に架
構構成要素間を連結し、前記架構構成要素間に前記構造
物本体の振動を抑制するための制御力を発生させるアク
チュエーターと、前記制御力を前記構造物本体の振動に
応じて能動的に制御するための制御手段とを設けたこと
を特徴とする能動型制振海洋構造物。10. An offshore structure in which a structure body is constructed on seabed ground, wherein frame components are connected within the frame of the structure body, and vibration of the structure body is connected between the frame components. An active vibration damping marine structure comprising: an actuator that generates a control force for suppressing vibration; and a control means that actively controls the control force in accordance with vibrations of the structure body. thing.
造物において、前記アクチュエーターの代わりに減衰係
数を可変とした可変減衰装置を設け、前記構造物本体の
振動に応じて前記減衰装置の減衰係数を制御手段により
能動的に制御し、前記架構構成要素間の連結状態を制御
可能としたことを特徴とする能動型制振海洋構造物。11. The active vibration damping marine structure according to claim 10, wherein a variable damping device with a variable damping coefficient is provided in place of the actuator, and the damping device is configured to damp the damping device in accordance with the vibration of the structure body. 1. An active damping marine structure characterized in that a coefficient is actively controlled by a control means, thereby making it possible to control a state of connection between the structural components.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3030861A JP2605492B2 (en) | 1991-02-26 | 1991-02-26 | Active vibration control offshore structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3030861A JP2605492B2 (en) | 1991-02-26 | 1991-02-26 | Active vibration control offshore structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04272312A true JPH04272312A (en) | 1992-09-29 |
| JP2605492B2 JP2605492B2 (en) | 1997-04-30 |
Family
ID=12315510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3030861A Expired - Lifetime JP2605492B2 (en) | 1991-02-26 | 1991-02-26 | Active vibration control offshore structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2605492B2 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0727592A1 (en) * | 1995-02-17 | 1996-08-21 | Avenir Poelouev | Universal dynamic stabilizer |
| WO2006026980A1 (en) | 2004-09-06 | 2006-03-16 | Gerb Schwingungsisolierungen Gmbh & Co. Kg | System for stabilizing supporting structures |
| JP2008014409A (en) * | 2006-07-06 | 2008-01-24 | Shimizu Corp | Vibration absorbing structure |
| JP2012526698A (en) * | 2009-05-14 | 2012-11-01 | サイペム エス．アー． | Floating support or ship with a device for detecting the movement of the free surface of a large amount of liquid |
| JP2015504122A (en) * | 2012-01-23 | 2015-02-05 | トランスオーシャン セドコ フォレックス ベンチャーズ リミテッド | High-definition rate for offshore drilling |
| US9217290B2 (en) | 2012-01-23 | 2015-12-22 | Transocean Sedco Forex Ventures Limited | High definition drilling rate of penetration for marine drilling |
| CN107269760A (en) * | 2017-08-18 | 2017-10-20 | 湖南科技大学 | Pier self-positioning damps rope vibration absorber |
| CN112281791A (en) * | 2020-11-20 | 2021-01-29 | 大连理工大学 | Underwater energy dissipation and shock absorption device with horizontally symmetrical double umbrella covers |
| CN113152407A (en) * | 2020-11-20 | 2021-07-23 | 大连理工大学 | Umbrella-shaped underwater vertical damping and energy dissipation device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5677415A (en) * | 1979-11-30 | 1981-06-25 | Mitsubishi Heavy Ind Ltd | Method and apparatus for mooring tension foot type marine structure |
| JPS6189804A (en) * | 1984-10-09 | 1986-05-08 | 松下電工株式会社 | Manufacture of decorative material |
| JPH02289769A (en) * | 1989-02-23 | 1990-11-29 | Kajima Corp | Variable damper for damping structure |
-
1991
- 1991-02-26 JP JP3030861A patent/JP2605492B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5677415A (en) * | 1979-11-30 | 1981-06-25 | Mitsubishi Heavy Ind Ltd | Method and apparatus for mooring tension foot type marine structure |
| JPS6189804A (en) * | 1984-10-09 | 1986-05-08 | 松下電工株式会社 | Manufacture of decorative material |
| JPH02289769A (en) * | 1989-02-23 | 1990-11-29 | Kajima Corp | Variable damper for damping structure |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0727592A1 (en) * | 1995-02-17 | 1996-08-21 | Avenir Poelouev | Universal dynamic stabilizer |
| WO2006026980A1 (en) | 2004-09-06 | 2006-03-16 | Gerb Schwingungsisolierungen Gmbh & Co. Kg | System for stabilizing supporting structures |
| JP2008014409A (en) * | 2006-07-06 | 2008-01-24 | Shimizu Corp | Vibration absorbing structure |
| JP2012526698A (en) * | 2009-05-14 | 2012-11-01 | サイペム エス．アー． | Floating support or ship with a device for detecting the movement of the free surface of a large amount of liquid |
| JP2015504122A (en) * | 2012-01-23 | 2015-02-05 | トランスオーシャン セドコ フォレックス ベンチャーズ リミテッド | High-definition rate for offshore drilling |
| US9217290B2 (en) | 2012-01-23 | 2015-12-22 | Transocean Sedco Forex Ventures Limited | High definition drilling rate of penetration for marine drilling |
| CN107269760A (en) * | 2017-08-18 | 2017-10-20 | 湖南科技大学 | Pier self-positioning damps rope vibration absorber |
| CN112281791A (en) * | 2020-11-20 | 2021-01-29 | 大连理工大学 | Underwater energy dissipation and shock absorption device with horizontally symmetrical double umbrella covers |
| CN113152407A (en) * | 2020-11-20 | 2021-07-23 | 大连理工大学 | Umbrella-shaped underwater vertical damping and energy dissipation device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2605492B2 (en) | 1997-04-30 |
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