JP2012096601A - Oscillation reducing device for floating body - Google Patents

Oscillation reducing device for floating body Download PDF

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Publication number
JP2012096601A
JP2012096601A JP2010244092A JP2010244092A JP2012096601A JP 2012096601 A JP2012096601 A JP 2012096601A JP 2010244092 A JP2010244092 A JP 2010244092A JP 2010244092 A JP2010244092 A JP 2010244092A JP 2012096601 A JP2012096601 A JP 2012096601A
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floating body
plate
pair
holes
members
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Japanese (ja)
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Yoshihito Ando
義人 安藤
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Mitsubishi Heavy Industries Ltd
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Mitsubishi Heavy Industries Ltd
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Priority to JP2010244092A priority Critical patent/JP2012096601A/en
Priority to EP11836245.8A priority patent/EP2634081A1/en
Priority to PCT/JP2011/074508 priority patent/WO2012057112A1/en
Priority to US13/807,083 priority patent/US20130098281A1/en
Priority to CN2011800322495A priority patent/CN102971210A/en
Priority to BR112012033454A priority patent/BR112012033454A2/en
Priority to KR1020127034022A priority patent/KR20130029096A/en
Priority to RU2012157074/11A priority patent/RU2012157074A/en
Publication of JP2012096601A publication Critical patent/JP2012096601A/en
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
    • B63B39/06—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B2035/448—Floating hydrocarbon production vessels, e.g. Floating Production Storage and Offloading vessels [FPSO]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
    • B63B39/06—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water
    • B63B2039/067—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water effecting motion dampening by means of fixed or movable resistance bodies, e.g. by bilge keels

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Civil Engineering (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Vibration Prevention Devices (AREA)
  • Revetment (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a technology which can further reduce oscillation of a floating body.SOLUTION: The oscillation reducing device includes a pair of plate-shaped members 4 attached to both widthwise edges of the bottom part of a floating body 1. Each upper end of the pair of plate-shaped members is adhered to the bottom part of the floating body. Each of the pair of plate-shaped members has a plurality of thorough-holes 5 lined up in the lengthwise direction of the plate-shaped members, which runs fore to aft along the floating body. Water flows in and out of the through-holes, forming eddies and expending energy, thereby minimizing oscillation of the floating body.

Description

本発明は、浮体の動揺を低減する装置に関する。   The present invention relates to an apparatus for reducing fluctuation of a floating body.

水上に浮体を係留して、様々な用途に用いる技術が実用化又は研究されている。例えばＦＬＮＧ（Ｆｌｏａｔｉｎｇ ＬＮＧ）又はＦＰＳＯ（Ｆｌｏａｔｉｎｇ Ｐｒｏｄｕｃｔｉｏｎ Ｓｔｏｒａｇｅ ＆ Ｏｆｆｌｏａｄｉｎｇ ｕｎｉｔ）と呼ばれるプラントでは、洋上に浮体を浮かべて、海底ガス田から回収した天然ガスを液化してＬＮＧ（液化天然ガス、Ｌｉｑｕｉｆｉｅｄ Ｎａｔｕｒａｌ Ｇａｓ）を生産し蓄積する。蓄積されたＬＮＧは、ＬＮＧ船によって港湾に運ばれる。   A technique for mooring a floating body on water and using it for various purposes has been put into practical use or studied. For example, in a plant called FLNG (Floating LNG) or FPSO (Floating Production Storage & Offloading unit), a floating body floats on the ocean, and LNG (Liquid Natural Gas) is obtained by liquefying natural gas recovered from the submarine gas field. Produce and accumulate. The accumulated LNG is transported to the port by an LNG ship.

例えば海上の水面に発生する波によって、浮体は動揺する。浮体の動揺は、浮体上での作業にとって望ましくない。例えばＦＬＮＧの場合は、稼働率を向上するために、浮体の動揺を抑制する技術が求められる。   For example, floating bodies are shaken by waves generated on the surface of the sea. Fluctuation of the floating body is undesirable for work on the floating body. For example, in the case of FLNG, in order to improve the operation rate, a technique for suppressing the fluctuation of the floating body is required.

特開２００４−１６１０５１号公報JP 2004-161051 A

浮体の動揺を低減するために、浮体本体の波上側に水面を貫通する鉛直板を設け、浮体の揺れを低減する技術が知られている。特許文献１は、その一例である。   In order to reduce the fluctuation of the floating body, a technique for reducing the fluctuation of the floating body by providing a vertical plate penetrating the water surface on the wave upper side of the floating body is known. Patent document 1 is an example.

浮体の動揺を更に低減する技術が求められている。浮体の動揺の状況に応じて効果的に動揺を低減する技術が求められている。   There is a demand for a technique for further reducing the fluctuation of the floating body. There is a need for a technique that effectively reduces the shaking according to the state of the shaking of the floating body.

以下に、［発明を実施するための形態］で使用される番号を括弧付きで用いて、課題を解決するための手段を説明する。これらの番号は、［特許請求の範囲］の記載と［発明を実施するための形態］との対応関係を明らかにするために付加されたものである。ただし、それらの番号を、［特許請求の範囲］に記載されている発明の技術的範囲の解釈に用いてはならない。   Hereinafter, means for solving the problem will be described using the numbers used in [DETAILED DESCRIPTION] in parentheses. These numbers are added to clarify the correspondence between the description of [Claims] and [Mode for Carrying Out the Invention]. However, these numbers should not be used to interpret the technical scope of the invention described in [Claims].

本発明の一側面において、動揺低減装置は、浮体（１）の底部の幅方向の両端部に取り付けられる一対の板状の部材（４）を備える。一対の板状の部材の各々は、長手方向が浮体（１）の前後方向であり、長手方向に並ぶ複数の貫通孔（５）を有する。   In one aspect of the present invention, the fluctuation reducing device includes a pair of plate-like members (4) attached to both ends in the width direction of the bottom of the floating body (1). Each of the pair of plate-like members has a plurality of through holes (5) aligned in the longitudinal direction, with the longitudinal direction being the front-rear direction of the floating body (1).

本発明の他の側面において、動揺低減装置の一対の板状の部材（４）の各々の上端は、浮体（１）の底部に密着する。   In another aspect of the present invention, the upper ends of the pair of plate-like members (4) of the fluctuation reducing device are in close contact with the bottom of the floating body (1).

本発明の更に他の側面において、動揺低減装置の一対の板状の部材（４）は、浮体（１）との間に隙間（６）が形成されるように、支持部材（７）によって浮体に取り付けられる。   In still another aspect of the present invention, the pair of plate-like members (4) of the fluctuation reducing device are floated by the support member (7) such that a gap (6) is formed between the pair of plate-like members (4). Attached to.

本発明の更に他の側面において、動揺低減装置は、複数の貫通孔（１０、１２）の開口面積を制御する制御部を備える。   In still another aspect of the present invention, the fluctuation reducing device includes a control unit that controls the opening area of the plurality of through holes (10, 12).

本発明の一側面における浮体（１）は、本発明による動揺低減装置を備える。   The floating body (1) according to one aspect of the present invention includes the fluctuation reducing device according to the present invention.

本発明により、浮体の動揺を更に低減することを可能とする技術が提供される。更に、浮体の動揺の状況に応じて効果的に動揺を低減することを可能とする技術が提供される。   According to the present invention, a technique that can further reduce the fluctuation of a floating body is provided. Furthermore, a technique is provided that makes it possible to effectively reduce the shaking according to the situation of the shaking of the floating body.

図１は、浮体の斜視図である。FIG. 1 is a perspective view of a floating body. 図２は、浮体の正面図である。FIG. 2 is a front view of the floating body. 図３は、浮体の正面図である。FIG. 3 is a front view of the floating body. 図４は、浮体の正面図である。FIG. 4 is a front view of the floating body. 図５は、浮体の正面図である。FIG. 5 is a front view of the floating body. 図６は、浮体の側面図である。FIG. 6 is a side view of the floating body. 図７は、動揺低減装置を構成する部材を示す。FIG. 7 shows members constituting the sway reduction device. 図８は、動揺低減装置を示す。FIG. 8 shows a sway reduction device. 図９は、動揺低減装置を示す。FIG. 9 shows a sway reduction device.

以下、図面を参照して本発明を説明するための実施形態について説明する。図１と図２は、本発明の第１実施形態における浮体を示す。図１は斜視図、図２は船首側から見た正面図である。浮体本体１は、典型的な例では船首３と船尾２を結ぶ船長方向を長手方向とする箱体である。図１では長手方向がＹ軸として描かれている。このような浮体において、Ｙ軸を中心とする回転運動であるロール方向の動揺を低減することが求められる。   DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for explaining the present invention will be described with reference to the drawings. 1 and 2 show a floating body in the first embodiment of the present invention. 1 is a perspective view, and FIG. 2 is a front view seen from the bow side. In a typical example, the floating body 1 is a box whose longitudinal direction is the ship length direction connecting the bow 3 and the stern 2. In FIG. 1, the longitudinal direction is depicted as the Y axis. In such a floating body, it is required to reduce fluctuation in the roll direction, which is a rotational motion around the Y axis.

浮体本体１の幅方向、すなわち水平面内で長手方向に対して直角なＸ軸方向の両端部に、動揺低減装置が取り付けられる。動揺低減装置は、一対の細長い板状の部材によって構成される。各々の板４の長手方向は、浮体本体１の前後方向（多くの場合、長手方向）と平行である。板４の長辺は浮体本体１の底部に接して取り付けられる。板４の向きは、浮体本体１の底部から鉛直方向下向きに突き出すように取り付けられる。板４の長手方向に並んで多数の孔（貫通孔）５が形成される。   Oscillation reducing devices are attached to both ends in the width direction of the floating body 1, that is, both ends in the X-axis direction perpendicular to the longitudinal direction in the horizontal plane. The sway reduction device is composed of a pair of elongated plate-like members. The longitudinal direction of each plate 4 is parallel to the front-rear direction (in many cases, the longitudinal direction) of the floating body 1. The long side of the plate 4 is attached in contact with the bottom of the floating body 1. The plate 4 is attached so as to protrude downward from the bottom of the floating body 1 in the vertical direction. A large number of holes (through holes) 5 are formed side by side in the longitudinal direction of the plate 4.

このような浮体が水上に浮かべて使用される。浮体本体１に入射する波などの影響によって浮体が動揺する。主な動揺の一つとしてローリングが発生する場合がある。そのような場合、板４が水に対してロール方向に周期的に動揺する。その動揺に伴って、船底に取り付けられた板４の孔５に水が出入りする。孔５の水流の下流側に渦が発生し、波のエネルギーが減衰する。その結果、浮体のローリングが抑制される。浮体の動揺の周期などの状況に応じて孔５のサイズを決めることにより、より効果的に浮体の動揺を抑制することができる。   Such a floating body is used floating on the water. The floating body is shaken by the influence of the wave incident on the floating body 1. Rolling may occur as one of the main fluctuations. In such a case, the plate 4 is periodically shaken in the roll direction with respect to water. Along with the shaking, water enters and exits the holes 5 of the plate 4 attached to the ship bottom. A vortex is generated downstream of the water flow in the hole 5 and the wave energy is attenuated. As a result, the rolling of the floating body is suppressed. By determining the size of the hole 5 according to the situation such as the cycle of the floating body, the floating body can be more effectively suppressed.

図３は、第１実施形態の第１変形例を示す正面図である。この第１変形例では、図１及び図２と同様に孔５−１が形成された板４−１が用いられるが、その向きが異なっている。図３の例において板４−１は、その主面が水平となるように浮体本体１の底面の両側端部に取り付けられる。このような構成によっても、動揺を抑制することができる。図１及び図２と、図３との中間的な斜めの角度となるように板を取り付けても効果が有る。   FIG. 3 is a front view showing a first modification of the first embodiment. In this first modified example, a plate 4-1 in which a hole 5-1 is formed is used as in FIGS. 1 and 2, but the direction is different. In the example of FIG. 3, the plate 4-1 is attached to both side ends of the bottom surface of the floating body 1 so that its main surface is horizontal. Such a configuration can also suppress fluctuations. Even if the plate is attached so as to have an oblique angle intermediate between FIGS. 1 and 2 and FIG. 3, there is an effect.

図４は、第１実施形態の第２変形例を示す正面図である。この変形例では、板５−２は第１部分と第２部分との２つの細長い板状の部材によって構成される。第１部分は浮体本体１の底部から鉛直下向きに突き出す。第２部分は第１部分の下端から主面を水平面として浮体本体１に対して外側に突き出す。孔４−２は、第１部分と第２部分のそれぞれに、長手方向に並ぶように形成される。   FIG. 4 is a front view showing a second modification of the first embodiment. In this modification, the plate 5-2 is configured by two elongated plate-like members of a first portion and a second portion. The first portion protrudes vertically downward from the bottom of the floating body 1. The second part protrudes outward from the floating body 1 with the main surface as a horizontal plane from the lower end of the first part. The holes 4-2 are formed in the first portion and the second portion so as to be aligned in the longitudinal direction.

図５は、第１実施形態の第３変形例を示す正面図である。この変形例では、板５−３は第１部分と第２部分との２つの細長い板状の部材によって構成される。第１部分は浮体本体１の底部から主面を水平面として外側に突き出す。第２部分は第１部分の外側端部から鉛直方向下向きに突き出す。孔４−２は、第１部分と第２部分のそれぞれに、長手方向に並ぶように形成される。これらの変形例によっても、浮体１の動揺を抑制することができる。   FIG. 5 is a front view showing a third modification of the first embodiment. In this modification, the plate 5-3 is constituted by two elongated plate-like members of a first portion and a second portion. The first portion protrudes outward from the bottom of the floating body 1 with the main surface as a horizontal plane. The second part protrudes vertically downward from the outer end of the first part. The holes 4-2 are formed in the first portion and the second portion so as to be aligned in the longitudinal direction. Also by these modified examples, the floating body 1 can be prevented from shaking.

図６は、本発明の第２実施形態における浮体を示す。第１実施形態では板４の長辺が浮体本体１の底面に隙間なく密着しているのに対して、第２実施形態では板４の長辺と浮体本体１の底面との間に隙間６が設けられる。板４は浮体本体１に対して支持部材７を介して取り付けられる。このような構成により、孔５だけでなく隙間６も水が通過する。隙間６を通過した水の下流側に渦ができることにより、波のエネルギーが減衰して浮体のローリングが抑制される。この第２実施形態においても、板４の形状に関して、図３〜図５と同様の変形例を採用することができる。   FIG. 6 shows a floating body according to the second embodiment of the present invention. In the first embodiment, the long side of the plate 4 is in close contact with the bottom surface of the floating body 1 without a gap. In the second embodiment, the gap 6 is formed between the long side of the plate 4 and the bottom surface of the floating body 1. Is provided. The plate 4 is attached to the floating body 1 via a support member 7. With such a configuration, water passes not only through the hole 5 but also through the gap 6. By creating a vortex on the downstream side of the water that has passed through the gap 6, wave energy is attenuated and rolling of the floating body is suppressed. Also in the second embodiment, the same modification as in FIGS. 3 to 5 can be adopted with respect to the shape of the plate 4.

入射波の波長などによって、波のエネルギーを効率的に減衰する孔・隙間の大きさは異なる。その孔・隙間の大きさに適するように、第１実施形態又は第２実施形態が選択される。第２実施形態の場合は、孔５のみでなく隙間６も動揺低減に用いることができる点で有利である。第１実施形態の場合は、板４を直接に浮体本体１の底面に取り付けることができるため、少ない部材で高い強度を得ることが容易である。特に板４には波の抵抗が大きくかかるために高い強度が求められる。   Depending on the wavelength of the incident wave and the like, the size of the hole / gap for efficiently attenuating the wave energy differs. The first embodiment or the second embodiment is selected so as to suit the size of the hole / gap. In the case of the second embodiment, it is advantageous in that not only the hole 5 but also the gap 6 can be used for reducing the fluctuation. In the case of the first embodiment, since the plate 4 can be directly attached to the bottom surface of the floating body 1, it is easy to obtain high strength with a small number of members. In particular, the plate 4 is required to have a high strength because of a large wave resistance.

図７と図８は本発明の第３実施形態における動揺低減装置を示す側面図である。本実施形態においては、第１実施形態又は第２実施形態における孔５に、開口面積を可変的に制御するための機構が追加される。図７と図８はその制御を可能とする構成の一例である。同じ形状を有する一対の板である第１板材８−１と第２板材８−２を用意する。動揺低減装置を組み立てる前の第１板材８−１と第２板材８−２が図７に示されている。第１板材８−１に、長手方向に並ぶ複数の孔９−１が形成される。第２板材８−２に、長手方向に並ぶ複数の孔９−２が形成される。孔９−１のピッチと孔９−２のピッチは同じである。   7 and 8 are side views showing a vibration reduction device according to the third embodiment of the present invention. In the present embodiment, a mechanism for variably controlling the opening area is added to the hole 5 in the first embodiment or the second embodiment. FIG. 7 and FIG. 8 show an example of a configuration that enables the control. A first plate member 8-1 and a second plate member 8-2, which are a pair of plates having the same shape, are prepared. FIG. 7 shows the first plate member 8-1 and the second plate member 8-2 before assembling the vibration reduction device. A plurality of holes 9-1 arranged in the longitudinal direction are formed in the first plate member 8-1. A plurality of holes 9-2 arranged in the longitudinal direction are formed in the second plate member 8-2. The pitch of the holes 9-1 and the pitch of the holes 9-2 are the same.

第１板材８−１と第２板材８−２とは、その平面形状が重なるように互いに取り付けられる。第１板材８−１と第２板材８−２とは長手方向に互いに摺動可能である。第１板材８−１と第２板材８−２との長手方向の相対的な変位Ｌ１は制御部によって制御することができる。例えば制御部は、アクチュエータ等の駆動機構によって変位Ｌ１を設定された値に制御し、その値で固定することができる。第１板材８−１と第２板材８−２とが重なった状態で、孔９−１と孔９−２との重なる部分に、孔１０が形成される。この孔１０が、第１実施形態及び第２実施形態の孔４に相当する。変位Ｌ１を制御することによって孔１０の大きさを変えることができる。   The 1st board | plate material 8-1 and the 2nd board | plate material 8-2 are mutually attached so that the planar shape may overlap. The first plate member 8-1 and the second plate member 8-2 are slidable in the longitudinal direction. The relative displacement L1 in the longitudinal direction between the first plate member 8-1 and the second plate member 8-2 can be controlled by the control unit. For example, the control unit can control the displacement L1 to a set value by a drive mechanism such as an actuator, and can fix the displacement L1 at the set value. In the state where the first plate member 8-1 and the second plate member 8-2 are overlapped, the hole 10 is formed in the portion where the hole 9-1 and the hole 9-2 overlap. The hole 10 corresponds to the hole 4 in the first embodiment and the second embodiment. By controlling the displacement L1, the size of the hole 10 can be changed.

このような動揺低減装置を、例えば図１と図２に示された板４のように、浮体本体１の底部の幅方向の両側端に取り付ける。その際、一対の板材の一方、例えば第２板材８−２を浮体本体１に固定する。作業者は、波の状況などに応じて浮体本体１の上などから遠隔的に変位Ｌ１を制御する。このような構成により、浮体の揺れ周期などの状況に応じて孔１０を動揺低減に適した大きさにすることができる。   Such a sway reduction device is attached to both side ends in the width direction of the bottom of the floating body 1, for example, like a plate 4 shown in FIGS. 1 and 2. At that time, one of the pair of plate members, for example, the second plate member 8-2 is fixed to the floating body 1. The operator remotely controls the displacement L1 from above the floating body 1 according to the state of the waves. With such a configuration, the hole 10 can be made to have a size suitable for reducing shaking according to the situation such as the swing period of the floating body.

図９は、孔の大きさを制御するための他の例を示す。図７及び図８と同様に、長手方向に並ぶ複数の貫通孔が形成された第１板材１１−１と第２板材１１−２を用意する。第１板材１１−１と第２板材１１−２を重ね、互いに取り付け時の鉛直方向に摺動可能であるように取り付ける。鉛直方向の相対的な変位Ｌ２を制御することにより、孔１２の大きさを調節することができる。   FIG. 9 shows another example for controlling the size of the holes. Similar to FIGS. 7 and 8, a first plate member 11-1 and a second plate member 11-2 having a plurality of through holes arranged in the longitudinal direction are prepared. The 1st board | plate material 11-1 and the 2nd board | plate material 11-2 are piled up, and it attaches so that it can slide to the perpendicular direction at the time of attachment. The size of the hole 12 can be adjusted by controlling the relative displacement L2 in the vertical direction.

１ 浮体本体
２ 船尾
３ 船首
４ 板
５ 孔
６ 隙間
７ 支持部材
８−１ 第１板材
８−２ 第２板材
９−１ 孔
９−２ 孔
１０ 孔
１１−１ 第１板材
１１−２ 第２板材
１２ 孔 DESCRIPTION OF SYMBOLS 1 Floating body 2 Stern 3 Bow 4 Plate 5 Hole 6 Clearance 7 Support member 8-1 1st board | plate material 8-2 2nd board | plate material 9-1 Hole 9-2 Hole 10 Hole 11-1 1st board | plate material 11-2 2nd board material 12 holes

Claims (5)

浮体の底部の幅方向の両端部に取り付けられる一対の板状の部材を具備し、
前記一対の板状の部材の各々は、長手方向が前記浮体の前後方向であり、前記長手方向に並ぶ複数の貫通孔を有する
動揺低減装置。 Comprising a pair of plate-like members attached to both ends in the width direction of the bottom of the floating body;
Each of the pair of plate-like members has a plurality of through holes arranged in the longitudinal direction, the longitudinal direction of which is the longitudinal direction of the floating body. 請求項１に記載された動揺低減装置であって、
前記一対の板状の部材の各々の上端は、前記浮体の底部に密着する
動揺低減装置。 The vibration reduction device according to claim 1,
The sway reduction device in which the upper end of each of the pair of plate-like members is in close contact with the bottom of the floating body. 請求項１に記載された動揺低減装置であって、
前記一対の板状の部材は、前記浮体との間に隙間が形成されるように、支持部材によって前記浮体に取り付けられる
動揺低減装置。 The vibration reduction device according to claim 1,
The sway reduction device is attached to the floating body by a support member so that a gap is formed between the pair of plate-like members and the floating body. 請求項１から３のいずれかに記載された動揺低減装置であって、
更に、前記複数の貫通孔の開口面積を制御する制御部
を具備する動揺低減装置。 The vibration reduction device according to any one of claims 1 to 3,
Furthermore, the vibration reduction apparatus which comprises the control part which controls the opening area of these through-holes. 請求項１から４のいずれかに記載された動揺低減装置を具備する浮体。   A floating body comprising the fluctuation reducing device according to any one of claims 1 to 4.
JP2010244092A 2010-10-29 2010-10-29 Oscillation reducing device for floating body Withdrawn JP2012096601A (en)

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JP2010244092A JP2012096601A (en) 2010-10-29 2010-10-29 Oscillation reducing device for floating body
EP11836245.8A EP2634081A1 (en) 2010-10-29 2011-10-25 Rocking-reduction device for floating body
PCT/JP2011/074508 WO2012057112A1 (en) 2010-10-29 2011-10-25 Rocking-reduction device for floating body
US13/807,083 US20130098281A1 (en) 2010-10-29 2011-10-25 Rolling reduction apparatus of floating structure
CN2011800322495A CN102971210A (en) 2010-10-29 2011-10-25 Rocking-reduction device for floating body
BR112012033454A BR112012033454A2 (en) 2010-10-29 2011-10-25 oscillation reduction apparatus and floating structure
KR1020127034022A KR20130029096A (en) 2010-10-29 2011-10-25 Rocking-reduction device for floating body
RU2012157074/11A RU2012157074A (en) 2010-10-29 2011-10-25 FLOAT REDUCTION DEVICE FOR FLOATING OBJECT

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CN102971210A (en) 2013-03-13
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RU2012157074A (en) 2014-06-27
US20130098281A1 (en) 2013-04-25

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