JP4848444B2 - Floating body fluctuation reducing device and floating body provided with the same - Google Patents

Floating body fluctuation reducing device and floating body provided with the same Download PDF

Info

Publication number
JP4848444B2
JP4848444B2 JP2009118952A JP2009118952A JP4848444B2 JP 4848444 B2 JP4848444 B2 JP 4848444B2 JP 2009118952 A JP2009118952 A JP 2009118952A JP 2009118952 A JP2009118952 A JP 2009118952A JP 4848444 B2 JP4848444 B2 JP 4848444B2
Authority
JP
Japan
Prior art keywords
floating body
plate
floating
fluctuation
reference example
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 - Fee Related
Application number
JP2009118952A
Other languages
Japanese (ja)
Other versions
JP2009184671A (en
Inventor
亮 西垣
正己 松浦
隆弘 平井
洋一 山口
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
MM Bridge Co Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Mitsubishi Heavy Industries Bridge and Steel Structures Engineering Co 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, Mitsubishi Heavy Industries Bridge and Steel Structures Engineering Co Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP2009118952A priority Critical patent/JP4848444B2/en
Publication of JP2009184671A publication Critical patent/JP2009184671A/en
Application granted granted Critical
Publication of JP4848444B2 publication Critical patent/JP4848444B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B39/00Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
    • B63B39/06Equipment 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
    • B63B2039/067Equipment 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Description

本発明は、水上に浮かぶ浮桟橋、浮倉庫、浮駐車場、作業船、石油生産プラットフォームなどとして適用される浮体構造物において、入射波による動揺を低減するための浮体の動揺低減装置および浮体に関する。   The present invention relates to a floating body sway reduction device and a floating body for reducing swaying due to incident waves in a floating structure applied as a floating pier, floating warehouse, floating parking lot, work ship, oil production platform, etc. .

水上に浮桟橋や浮駐車場などを設置する場合や、作業船を停留して各種の作業を行う場合、これらの浮桟橋や浮駐車場、作業船などの浮体構造物に対して波が入射して動揺してしまうことから、この浮体構造物の動揺を低減する必要がある。   When installing floating piers, floating parking lots, etc. on the water, or when stopping work vessels and performing various operations, waves are incident on these floating structures such as floating piers, floating parking lots, work vessels, etc. Therefore, it is necessary to reduce the fluctuation of the floating structure.

浮体構造物の動揺を低減する装置として、各種の消波装置が提案されているが、出願人は、下記の特許文献1や特許文献2に既に提案している。この特許文献1に記載された浮体の動揺低減装置では、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ようにしている。また、特許文献2に記載された耐波型大型浮体では、大型浮体の波上側にL型や逆L型をなす形状の異なる消波構造体を幅方向に交互に並設し、浮体の揺れを低減するようにしている。   Various wave-dissipating devices have been proposed as devices for reducing the fluctuation of the floating structure, and the applicant has already proposed in Patent Document 1 and Patent Document 2 below. In the floating body sway reduction device described in Patent Document 1, a vertical plate that penetrates the water surface is provided on the wave upper side of the floating body to reduce the swing of the floating body. Moreover, in the wave-resistant large floating body described in Patent Document 2, wave-dissipating structures having different shapes of L shape and inverted L shape are alternately arranged in the width direction on the wave upper side of the large floating body, and the floating body is shaken. I try to reduce it.

特開2000−142569号公報Japanese Patent Laid-Open No. 2000-14269 特開2001−206284号公報JP 2001-206284 A

ところが、上述した浮体の動揺低減装置は、それぞれの構造を採用することで、浮体の揺れをかなり低減することはできるものの、十分ではなく、確実に浮体の揺れを低減して安全性の向上を図ったものが望まれている。   However, although the above-described floating body sway reduction device can employ the respective structures to significantly reduce the floating body sway, it is not sufficient, and the floating body sway is reliably reduced to improve safety. What is planned is desired.

本発明はこのような問題を解決するものであって、確実に浮体の揺れを低減して安全性の向上を図った浮体の動揺低減装置を提供することを目的とする。   SUMMARY OF THE INVENTION The present invention solves such a problem, and an object of the present invention is to provide a floating body shake reduction device that reliably reduces the floating body swing and improves safety.

上述の目的を達成するための発明の浮体の動揺低減装置は、水上に浮かぶ浮体本体の少なくとも波上側に板状部材を設けると共に、該板状部材の前記浮体本体側端部が、前記浮体本体の底面と同高さから水平方向に所定距離離間し、前記浮体本体は直方体形状をなし、波上側からの入射波が前記浮体本体の側面に当たると共に、一部が前記浮体本体と前記板状部材との間を通水することを特徴とするものである。 In order to achieve the above-mentioned object, the floating body sway reduction device of the present invention is provided with a plate-like member at least on the wave side of a floating body that floats on water, and the floating body-side end of the plate-like member includes the floating body. The floating body is separated by a predetermined distance in the horizontal direction from the same height as the bottom surface of the main body, the floating body has a rectangular parallelepiped shape, an incident wave from the wave upper side hits the side surface of the floating body, and a part of the floating body and the plate shape Water is passed between the members.

さらに、本発明の浮体の動揺低減装置は、前記板状部材は、前記浮体本体の底面に対して斜め方向に設けられていることを特徴とするものである。   In the floating body sway reduction device of the present invention, the plate-like member is provided in an oblique direction with respect to the bottom surface of the floating body body.

さらに、本発明の浮体の動揺低減装置は、前記板状部材は、前記浮体本体から並設された複数のステイを介して所定位置に支持され、該複数のステイの間に通水可能な貫通部が設けられていることを特徴とするものである。   Furthermore, in the floating body sway reduction device of the present invention, the plate-like member is supported at a predetermined position via a plurality of stays arranged in parallel from the floating body main body, and allows water to pass between the plurality of stays. A part is provided.

さらに、本発明の浮体の動揺低減装置は、前記板状部材は該浮体本体の長手方向における少なくとも左右いずれかの一側に設けられたことを特徴とするものである。   Furthermore, the floating body fluctuation reducing device of the present invention is characterized in that the plate member is provided on at least one of the left and right sides in the longitudinal direction of the floating body.

さらに、本発明の浮体の動揺低減装置は、前記板状部材を前記浮体本体の底面より上方に移動可能としたことを特徴とするものである。   Further, the floating body sway reduction device of the present invention is characterized in that the plate-like member is movable upward from the bottom surface of the floating body.

さらに、本発明の浮体の動揺低減装置は、前記板状部材は、ヒンジ機構を介して垂下されていることを特徴とするものである。   Furthermore, the floating body fluctuation reducing device of the present invention is characterized in that the plate-like member is suspended via a hinge mechanism.

さらに、本発明の浮体の動揺低減装置は、前記板状部材は、前記浮体本体から並設された前記ヒンジ機構に支持され、該ヒンジ機構に通水可能な貫通部が設けられていることを特徴とするものである。   Further, in the floating body sway reduction device of the present invention, the plate-like member is supported by the hinge mechanism arranged in parallel from the floating body main body, and a penetrating portion that allows water to pass through the hinge mechanism is provided. It is a feature.

さらに、本発明の浮体の動揺低減装置は、前記板状部材は、該板状部材の延材方向に略直交するよう形成された間隙により分割されていることを特徴とするものである。   Furthermore, the floating body fluctuation reducing device of the present invention is characterized in that the plate-like member is divided by a gap formed so as to be substantially orthogonal to the extending direction of the plate-like member.

また、本発明の浮体は、上記のいずれかに記載の浮体の動揺低減装置と、浮体本体とを備えたことを特徴とするものである。   Moreover, the floating body of the present invention includes any one of the above-described floating body sway reduction devices and a floating body main body.

水上に浮かぶ浮体本体の少なくとも波上側に浮体本体から所定距離離間して板状部材を設け、前記浮体本体は直方体形状をなしているので、入射波が浮体本体の側面および板状部材に当たると共に一部が通水するため、浮体本体に作用する波力が減少できると共に板状部材によりローリングあるいはピッチングを抑制でき、確実に浮体の揺れを低減して安全性も向上を図ることができる。   A plate member is provided at a predetermined distance from the floating body at least on the wave upper side of the floating body that floats on the water. Since the floating body has a rectangular parallelepiped shape, the incident wave strikes the side surface and the plate member of the floating body. Since the portion allows water to flow, the wave force acting on the floating body can be reduced, and rolling or pitching can be suppressed by the plate-like member, and the swinging of the floating body can be reliably reduced and the safety can be improved.

水上に浮かぶ浮体本体の少なくとも波上側に、浮体本体の底面に対して斜め方向に板状部材を設けたので、入射波が浮体本体および板状部材に当たると共に一部が通水するため、浮体本体に作用する波力が減少できると共に板状部材によりローリングあるいはピッチングを抑制でき、確実に浮体の揺れを低減して安全性も向上を図ることができる。さらに、入射波の周期に応じて、板状部材の角度を変化させることにより、ローリングあるいはピッチングを最も低減できるように設定できる。   Since a plate-like member is provided at least on the wave upper side of the floating body that floats on the water and obliquely with respect to the bottom surface of the floating body, the incident wave hits the floating body and the plate-like member, and part of the floating body passes through the water. The wave force acting on the plate can be reduced, and rolling or pitching can be suppressed by the plate-like member, so that the swinging of the floating body can be reliably reduced and the safety can be improved. Furthermore, by changing the angle of the plate member according to the period of the incident wave, it can be set so that rolling or pitching can be reduced most.

板状部材を浮体本体から並設された複数のステイを介して所定位置に支持し、複数のステイの間に通水可能な貫通部を設けたので、簡単な構成で板状部材を所定位置に支持することができる。   The plate-like member is supported at a predetermined position through a plurality of stays arranged in parallel from the floating body, and a penetrating portion that allows water to flow between the stays is provided. Can be supported.

板状部材を浮体本体の長手方向における少なくとも左右一側に設けたので、板状部材により浮体本体のローリングを確実に抑制することができる。   Since the plate member is provided on at least one of the left and right sides in the longitudinal direction of the floating body, rolling of the floating body can be reliably suppressed by the plate member.

板状部材を浮体本体の底面より上方に移動可能としたので、例えば、浮体本体を作業船に適用した場合、不使用時には板状部材を浮体本体の上方に移動することで、航行の邪魔になることを防止することができる。   Since the plate-like member can be moved upward from the bottom surface of the floating body, for example, when the floating body is applied to a work boat, the plate-like member is moved above the floating body when not in use, which obstructs navigation. Can be prevented.

水上に浮かぶ浮体本体の少なくとも波上側に、浮体本体にヒンジ機構を介して垂下される板状部材を設けたので、入射波が浮体本体および板状部材に当たると共に一部が通水するため、浮体本体に作用する波力が減少できると共に、板状部材が波力を吸収するので、板状部材によりローリングあるいはピッチングを抑制でき、確実に浮体の揺れを低減して安全性も向上を図ることができる。   Since a plate-like member suspended from the floating body via a hinge mechanism is provided at least on the wave upper side of the floating body that floats on the water, the incident wave hits the floating body and the plate-like member, and a part of the floating body passes through the floating body. The wave force acting on the main body can be reduced, and the plate-like member absorbs the wave force, so that rolling or pitching can be suppressed by the plate-like member, and the swinging of the floating body can be reliably reduced and the safety can be improved. it can.

板状部材を浮体本体から並設されたヒンジ機構を介して支持し、複数のヒンジ機構の間に通水可能な貫通部を設けたので、簡単な構成で板状部材を支持することができる。   Since the plate-like member is supported via a hinge mechanism arranged in parallel from the floating body, and a penetrating portion capable of passing water is provided between the plurality of hinge mechanisms, the plate-like member can be supported with a simple configuration. .

板状部材の延在方向に略直交するよう形成された間隙により分割された板状部材を設けたので、一体とされた板状部材を設けた場合と同様に、入射波が浮体本体及び板状部材に当たると共に一部が通水するため、浮体本体に作用する波力を減少できると共に板状部材によりローリングあるいはピッチングを抑制でき、確実に浮体の揺れを低減して安全性の向上を図ることができる。   Since the plate-like member divided by the gap formed so as to be substantially orthogonal to the extending direction of the plate-like member is provided, the incident wave is generated by the floating body and the plate in the same manner as the case where the integrated plate-like member is provided. Since part of the water passes through the water as it hits the shaped member, the wave force acting on the floating body can be reduced, and rolling or pitching can be suppressed by the plate-like member, and the swinging of the floating body can be reliably reduced to improve safety. Can do.

本発明の浮体によれば、動揺低減板により浮体の揺れが低減されるので、安全性の高い浮体が実現できる。   According to the floating body of the present invention, since the shaking of the floating body is reduced by the fluctuation reducing plate, a highly safe floating body can be realized.

本発明の第1参考例に係る浮体の動揺低減装置を表す概略図である。It is the schematic showing the fluctuation reduction apparatus of the floating body which concerns on the 1st reference example of this invention. 鉛直板の取付構造を表す浮体本体の概略図である。It is the schematic of the floating body main body showing the attachment structure of a vertical board. 本参考例の浮体の動揺低減装置における鉛直板の取付高さごとの波周期に対する浮体本体のロール角を表すグラフである。It is a graph showing the roll angle of the floating body with respect to the wave period for every installation height of the vertical board in the fluctuation reduction apparatus of the floating body of this reference example. 本参考例の第1変形例に係る浮体の動揺低減装置を表す概略図である。It is the schematic showing the fluctuation reduction apparatus of the floating body which concerns on the 1st modification of this reference example. 本参考例の浮体の動揺低減装置における波周期に対する浮体本体のロール角を表すグラフである。It is a graph showing the roll angle of the floating body with respect to the wave period in the fluctuation reduction apparatus of the floating body of this reference example. 本参考例の第2変形例に係る浮体の動揺低減装置を表す概略図である。It is the schematic showing the fluctuation reduction apparatus of the floating body which concerns on the 2nd modification of this reference example. 本発明の第2参考例に係る浮体の動揺低減装置を表す概略図である。It is the schematic showing the fluctuation reduction apparatus of the floating body which concerns on the 2nd reference example of this invention. 本参考例の浮体の動揺低減装置における水平板の取付高さごとの波周期に対する浮体本体のロール角を表すグラフである。It is a graph showing the roll angle of the floating body with respect to the wave period for every attachment height of the horizontal board in the fluctuation reduction apparatus of the floating body of this reference example. 本参考例の第1変形例に係る浮体の動揺低減装置を表す概略図である。It is the schematic showing the fluctuation reduction apparatus of the floating body which concerns on the 1st modification of this reference example. 本参考例の浮体の動揺低減装置における波周期に対する浮体本体のロール角を表すグラフである。It is a graph showing the roll angle of the floating body with respect to the wave period in the fluctuation reduction apparatus of the floating body of this reference example. 本発明の第3参考例に係る浮体の動揺低減装置を表す概略図である。It is the schematic showing the fluctuation reduction apparatus of the floating body which concerns on the 3rd reference example of this invention. 本発明の変形例に係る浮体の動揺低減装置における波周期に対する浮体本体のピッチ角を表すグラフである。It is a graph showing the pitch angle of the floating body with respect to the wave period in the fluctuation reduction apparatus of the floating body which concerns on the modification of this invention. 本発明の第4参考例に係る浮体の動揺低減装置を表す概略図である。It is the schematic showing the fluctuation reduction apparatus of the floating body which concerns on the 4th reference example of this invention. 本参考例の浮体の動揺低減装置における波周期に対する浮体本体のピッチ角を表すグラフである。It is a graph showing the pitch angle of the floating body with respect to the wave period in the fluctuation reduction apparatus of the floating body of this reference example. 本発明の第1実施形態に係る浮体の動揺低減装置を表す概略図である。It is the schematic showing the fluctuation reduction apparatus of the floating body which concerns on 1st Embodiment of this invention. 本実施形態の浮体の動揺低減装置における板状部材の取付角度ごとの波周期に対する浮体本体のロール角を表すグラフである。It is a graph showing the roll angle of the floating body with respect to the wave period for every attachment angle of the plate-shaped member in the fluctuation reduction apparatus of the floating body of this embodiment. 本発明の第2実施形態に係る浮体の動揺低減装置を表す概略図である。It is the schematic showing the fluctuation reduction apparatus of the floating body which concerns on 2nd Embodiment of this invention. 本実施形態の浮体の動揺低減装置における波周期に対する浮体本体のロール角を表すグラフである。It is a graph showing the roll angle of the floating body with respect to the wave period in the sway reduction apparatus of the floating body of this embodiment. 本発明の第5参考例に係る浮体の動揺低減装置を表す概略図である。It is the schematic showing the fluctuation reduction apparatus of the floating body which concerns on the 5th reference example of this invention. 本参考例の浮体の動揺低減装置における波周期に対する浮体本体のピッチ角を表すグラフである。It is a graph showing the pitch angle of the floating body with respect to the wave period in the fluctuation reduction apparatus of the floating body of this reference example. 本発明の第1参考例の第3変形例に係る浮体の動揺低減装置を表す平面図である。It is a top view showing the fluctuation reduction apparatus of the floating body which concerns on the 3rd modification of the 1st reference example of this invention. 本参考例の浮体の動揺低減装置における波周期に対する浮体本体のロール角を表すグラフである。It is a graph showing the roll angle of the floating body with respect to the wave period in the fluctuation reduction apparatus of the floating body of this reference example. 本発明の第6参考例に係る浮体の動揺低減装置を表す平面図である。It is a top view showing the fluctuation reduction apparatus of the floating body which concerns on the 6th reference example of this invention. 本発明の第6参考例に係る浮体の動揺低減装置を表す側面図である。It is a side view showing the fluctuation reduction apparatus of the floating body which concerns on the 6th reference example of this invention. 本参考例の浮体の動揺低減装置における波周期に対する浮体本体のピッチ角を表すグラフである。It is a graph showing the pitch angle of the floating body with respect to the wave period in the fluctuation reduction apparatus of the floating body of this reference example. 図25に示すグラフの各浮体の動揺低減装置の条件を示す図表である。It is a graph which shows the conditions of the fluctuation reduction apparatus of each floating body of the graph shown in FIG. 本発明の第6参考例の第1変形例に係る浮体の動揺低減装置を表す平面図である。It is a top view showing the fluctuation reduction apparatus of the floating body which concerns on the 1st modification of the 6th reference example of this invention. 本発明の第6参考例の第2変形例に係る浮体の動揺低減装置を表す平面図である。It is a top view showing the fluctuation reduction apparatus of the floating body which concerns on the 2nd modification of the 6th reference example of this invention. 喫水の浅い浮体と、喫水の深い浮体を比較した図である。It is the figure which compared the shallow floating body of draft and the deep floating body of draft.

以下、図面に基づいて本発明の実施の形態を詳細に説明する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

図1に本発明の第1参考例に係る浮体の動揺低減装置を表す概略、図2に鉛直板の取付構造を表す浮体本体の概略、図3に本参考例の浮体の動揺低減装置における鉛直板の取付高さごとの波周期に対する浮体本体のロール角を表すグラフ、図4に本参考例の第1変形例に係る浮体の動揺低減装置を表す概略、図5に本参考例の浮体の動揺低減装置における波周期に対する浮体本体のロール角を表すグラフ、図6に本参考例の第2変形例に係る浮体の動揺低減装置を表す概略を示す。   FIG. 1 is a schematic diagram showing a floating body sway reduction device according to a first reference example of the present invention, FIG. 2 is a schematic diagram of a floating body main body showing a vertical plate mounting structure, and FIG. 3 is a vertical diagram of a floating body sway reduction device of this reference example. FIG. 4 is a graph showing the roll angle of the floating body with respect to the wave period for each mounting height of the plate, FIG. 4 is a schematic diagram showing the sway reduction device of the floating body according to the first modification of this reference example, and FIG. The graph showing the roll angle of the floating body with respect to the wave period in the fluctuation reducing device, and FIG. 6 schematically show the floating fluctuation reducing device according to the second modification of this reference example.

本参考例の浮体の動揺低減装置において、図1及び図2に示すように、浮体本体11は、例えば、鋼板によって直方体形状に形成され、内部に密閉された複数の浮き室(図示略)が設けられている。そのため、浮体本体11はこの浮き室によって発生する浮力により水上(喫水線12)に浮かぶことができる。   In the floating body sway reducing device of this reference example, as shown in FIGS. 1 and 2, the floating body 11 is formed in a rectangular parallelepiped shape by, for example, a steel plate, and has a plurality of floating chambers (not shown) sealed inside. Is provided. Therefore, the floating body 11 can float on the water (draft line 12) by the buoyancy generated by the floating chamber.

この浮体本体11の長手方向における一側、つまり、側面部には複数のステイ13を介して鉛直板14が浮体本体11から所定距離離間して略鉛直方向に沿って支持されている。この鉛直板14は浮体本体11の長手方向寸法とほぼ同じ長さの平板であって、上端部が浮体本体11の底面とほぼ同じ高さ位置にあり、この位置から下方に延出して形成されている。そして、浮体本体11と鉛直板14との間には複数のステイ13により区画された複数の貫通部15が形成され、この貫通部15に通水可能となっている。   A vertical plate 14 is supported along a substantially vertical direction at a predetermined distance from the floating body 11 via a plurality of stays 13 on one side in the longitudinal direction of the floating body 11. The vertical plate 14 is a flat plate having substantially the same length as the longitudinal dimension of the floating body 11, and has an upper end portion at a height position substantially the same as the bottom surface of the floating body 11, and is formed to extend downward from this position. ing. A plurality of through portions 15 partitioned by a plurality of stays 13 are formed between the floating body 11 and the vertical plate 14, and water can be passed through the through portions 15.

従って、このように構成された鉛直板14を有する浮体本体11にあっては、水上に浮かした状態で、波上側(図1にて右側)から入射波16が作用すると、この入射波16は浮体本体11の側面及び鉛直板14に当たると共に、一部が各貫通部15を通水する。そのため、浮体本体11は、貫通部15の通水により入射波16の波力を減少できる。また、鉛直板14は浮体本体11のローリングに対する抵抗になると共に、各貫通部15を流体が通過することによって更に大きな抵抗になるため、浮体本体11の動揺を低減できる。   Therefore, in the floating body 11 having the vertical plate 14 configured as described above, when the incident wave 16 acts from the wave upper side (right side in FIG. 1) while floating on the water, the incident wave 16 is While being in contact with the side surface of the floating body 11 and the vertical plate 14, a part of the water passes through each through portion 15. Therefore, the floating body 11 can reduce the wave force of the incident wave 16 due to water passing through the through portion 15. In addition, the vertical plate 14 becomes resistance against rolling of the floating body 11 and further increases resistance as the fluid passes through each through portion 15, so that the swing of the floating body 11 can be reduced.

この場合、浮体本体11に対する鉛直板14の高さ位置により浮体本体11における動揺の低減効果が変わる。即ち、図3のグラフに示すように、浮体本体11の底面に対して鉛直板14の上端部を下方に位置させた場合と、浮体本体11の底面に対して鉛直板14の上端部を上方に位置させた場合と、浮体本体11の底面と鉛直板14の上端部とをほぼ同一高さに位置させた場合とを比較した。このグラフからわかるように、浮体本体11の底面と鉛直板14の上端部とを同じ高さにしたほうが、浮体本体11のロール角が小さくなり、浮体本体11における動揺を確実に低減する効果がある。   In this case, the fluctuation reduction effect in the floating body 11 changes depending on the height position of the vertical plate 14 with respect to the floating body 11. That is, as shown in the graph of FIG. 3, the upper end of the vertical plate 14 is positioned below the bottom surface of the floating body 11 and the upper end of the vertical plate 14 is positioned above the bottom surface of the floating body 11. And the case where the bottom surface of the floating body 11 and the upper end portion of the vertical plate 14 are positioned at substantially the same height. As can be seen from this graph, when the bottom surface of the floating body 11 and the upper end of the vertical plate 14 are made the same height, the roll angle of the floating body 11 becomes smaller, and the effect of reliably reducing the shaking in the floating body 11 is obtained. is there.

なお、上述の参考例では、浮体本体11の一方の側面部にステイ13を介して鉛直板14を設けたが、図4に示すように、浮体本体11の左右の側面部にステイ13を介して鉛直板14を設けてもよい。浮体本体11の浮遊位置によっては、波が左からあるいは右から作用することが考えられ、このような場合には、入射波16に対して浮体本体11のローリングを抑制でき、浮体本体11の動揺を低減できる。   In the above-described reference example, the vertical plate 14 is provided on one side surface of the floating body 11 via the stay 13. However, as illustrated in FIG. 4, the left and right side surfaces of the floating body 11 are interposed on the stay 13. A vertical plate 14 may be provided. Depending on the floating position of the floating body 11, it is conceivable that the waves act from the left or the right. In such a case, the rolling of the floating body 11 can be suppressed with respect to the incident wave 16, and the floating body 11 is shaken Can be reduced.

このように本参考例にあっては、浮体本体11の一側面部、あるいは両側面部に貫通部15を介して鉛直板14を設けたことで、浮体本体11における動揺を確実に低減することができる。即ち、図5のグラフに示すように、浮体本体のみの場合、浮体本体の一側面部に鉛直板を固定した場合、浮体本体11の一側面部に貫通部15を介して鉛直板14を設けた場合(本参考例)、浮体本体11の両側面部に貫通部15を介して鉛直板14を設けた場合(本参考例の第1変形例)とを比較した。このグラフからわかるように、本参考例で説明した浮体本体11の両側面部に貫通部15を介して鉛直板14を設けたものは、浮体本体のみ及び浮体本体に鉛直板を固定したものに比べて、浮体本体11のロール角を低減できると共にロール固有周期を長い側に移行でき、浮体本体11における動揺を確実に低減できることがわかる。そして、浮体本体11の一側面部に貫通部15を介して鉛直板14を設けたものは、更に浮体本体11における動揺の低減効果を向上できることがわかる。   As described above, in the present reference example, the vertical plate 14 is provided on one side surface or both side surfaces of the floating body 11 via the penetrating portion 15, so that the shaking in the floating body 11 can be reliably reduced. it can. That is, as shown in the graph of FIG. 5, in the case of only the floating body main body, when the vertical plate is fixed to one side surface portion of the floating body main body, the vertical plate 14 is provided on the one side surface portion of the floating body main body 11 through the through portion 15. The case (this reference example) compared with the case where the vertical board 14 was provided in the both sides | surfaces part of the floating body 11 via the penetration part 15 (1st modification of this reference example). As can be seen from this graph, the structure in which the vertical plate 14 is provided on both side surfaces of the floating body 11 described in the present reference example through the penetrating portion 15 is compared to the floating body alone and the vertical body fixed to the floating body. Thus, it can be seen that the roll angle of the floating body 11 can be reduced and the roll natural period can be shifted to the longer side, and the fluctuation in the floating body 11 can be reliably reduced. And what provided the vertical board 14 in the one side part of the floating body 11 via the penetration part 15 can understand that the reduction effect of the shaking in the floating body 11 can further be improved.

更に、上述の参考例では、浮体本体11の一方の側面部にステイ13を介して鉛直板14を固定して設けたが、図6に示すように、浮体本体11の一側面部には複数のガイドレール17が鉛直方向に沿って固定され、このガイドレール17にはガイド部材18が昇降自在に支持され、このガイド部材18にステイ13を介して鉛直板14が支持されており、このガイド部材18は図示しない駆動装置(例えば、駆動チェーン、ねじ軸、流体シリンダ等)により昇降可能となっている。   Furthermore, in the above-described reference example, the vertical plate 14 is fixed to one side surface portion of the floating body 11 via the stay 13, but as shown in FIG. The guide rail 17 is fixed along the vertical direction. A guide member 18 is supported on the guide rail 17 so as to be movable up and down. A vertical plate 14 is supported on the guide member 18 via a stay 13. The member 18 can be moved up and down by a driving device (not shown) (for example, a driving chain, a screw shaft, a fluid cylinder, etc.).

従って、浮体本体11に対して鉛直板14が昇降自在であり、上昇位置では鉛直板14の下端部が浮体本体11の底面より上方の退避位置にあり、浮体本体11を作業船に適用した場合には、鉛直板14が航行の邪魔になることはない。一方、鉛直板14の下降位置ではこの鉛直板14の上端部と浮体本体11の底面とがほぼ同じ高さ位置にあり、入射波16に対して浮体本体11のローリングを抑制して浮体本体11の動揺を低減できる。   Therefore, the vertical plate 14 can be moved up and down with respect to the floating body 11, and the lower end of the vertical plate 14 is in the retracted position above the bottom surface of the floating body 11 in the raised position, and the floating body 11 is applied to a work boat. In this case, the vertical plate 14 does not obstruct the navigation. On the other hand, in the lowered position of the vertical plate 14, the upper end portion of the vertical plate 14 and the bottom surface of the floating body 11 are substantially at the same height, and the rolling of the floating body 11 with respect to the incident wave 16 is suppressed. Can be reduced.

図7に本発明の第2参考例に係る浮体の動揺低減装置を表す概略、図8に本参考例の浮体の動揺低減装置における水平板の取付高さごとの波周期に対する浮体本体のロール角を表すグラフ、図9に本参考例の第1変形例に係る浮体の動揺低減装置を表す概略、図10に本参考例の浮体の動揺低減装置における波周期に対する浮体本体のロール角を表すグラフを示す。なお、前述した第1参考例で説明したものと同様の機能を有する部材には同一の符号を付して重複する説明は省略する。   FIG. 7 is a schematic diagram showing a floating body sway reduction device according to a second reference example of the present invention, and FIG. 8 is a roll angle of the floating body with respect to the wave period for each mounting height of the horizontal plate in the floating body sway reduction device of this reference example. FIG. 9 is a schematic diagram illustrating the floating body sway reducing device according to the first modification of the present reference example, and FIG. 10 is a graph illustrating the roll angle of the floating body with respect to the wave period in the floating body sway reducing device of the present reference example. Indicates. In addition, the same code | symbol is attached | subjected to the member which has the same function as what was demonstrated by the 1st reference example mentioned above, and the overlapping description is abbreviate | omitted.

本参考例の浮体の動揺低減装置において、図7に示すように、浮体本体21は、前述した第1参考例の浮体本体11とほぼ同様の構成をなし、長手方向における一側、つまり、側面部に複数のステイ23を介して水平板24が浮体本体21から所定距離離間して略水平方向に沿って支持されている。この水平板24は浮体本体21の長手方向寸法とほぼ同じ長さの平板であって、上面部が浮体本体21の底面とほぼ同じ高さ位置にあり、浮体本体21と水平板24との間には各ステイ23により複数の貫通部25が形成されて通水可能となっている。   In the floating body sway reducing device of this reference example, as shown in FIG. 7, the floating body 21 has substantially the same configuration as the floating body 11 of the first reference example described above. A horizontal plate 24 is supported by a plurality of stays 23 along a substantially horizontal direction at a predetermined distance from the floating body 21. The horizontal plate 24 is a flat plate having substantially the same length as the longitudinal dimension of the floating body 21, and the upper surface portion is substantially at the same height as the bottom surface of the floating body 21, and between the floating body 21 and the horizontal plate 24. Each stay 23 is formed with a plurality of through portions 25 to allow water to pass therethrough.

従って、このように構成された水平板24を有する浮体本体21にあっては、水上に浮かした状態で、波上側(図7にて右側)から入射波16が作用すると、この入射波16は浮体本体21の側面に当たると共に、一部が各貫通部25を通水する。そのため、浮体本体21は、貫通部25の通水により入射波16の波力を減少できると共に、水平板24及び貫通部25が抵抗となってローリングを抑制でき、浮体本体21の動揺を低減できる。   Therefore, in the floating body 21 having the horizontal plate 24 configured as described above, when the incident wave 16 acts from the wave upper side (right side in FIG. 7) in a state of floating on the water, the incident wave 16 is While hitting the side surface of the floating body 21, a part of the water penetrates each through portion 25. For this reason, the floating body 21 can reduce the wave force of the incident wave 16 due to water passing through the penetrating portion 25, and the horizontal plate 24 and the penetrating portion 25 can be resisted to suppress rolling, thereby reducing the shaking of the floating body 21. .

この場合、浮体本体21に対する水平板24の高さ位置により浮体本体21における動揺の低減効果が変わる。即ち、図8のグラフに示すように、浮体本体21の底面に対して水平板24の上面部を下方に位置させた場合と、浮体本体21の底面と水平板24の上端部とをほぼ同一高さに位置させた場合とを比較した。このグラフからわかるように、浮体本体21の底面と水平板24の上面部とを同じ高さにしたほうが、浮体本体21のロール角が小さくなり、浮体本体21における動揺を確実に低減する効果がある。   In this case, the fluctuation reduction effect in the floating body 21 changes depending on the height position of the horizontal plate 24 with respect to the floating body 21. That is, as shown in the graph of FIG. 8, when the upper surface portion of the horizontal plate 24 is positioned below the bottom surface of the floating body 21, the bottom surface of the floating body 21 and the upper end portion of the horizontal plate 24 are substantially the same. Comparison was made with the case of being positioned at the height. As can be seen from this graph, when the bottom surface of the floating body 21 and the top surface of the horizontal plate 24 are made to have the same height, the roll angle of the floating body 21 becomes smaller, and the effect of reliably reducing fluctuations in the floating body 21 is obtained. is there.

なお、上述の参考例では、浮体本体21の一方の側面部にステイ23を介して水平板24を設けたが、図9に示すように、浮体本体21の左右の側面部にステイ23を介して水平板24を設けてもよい。浮体本体21の浮遊位置によっては、波が左からあるいは右から作用することが考えられ、このような場合には、入射波16に対して浮体本体21のローリングを抑制でき、浮体本体21の動揺を低減できる。   In the above-described reference example, the horizontal plate 24 is provided on one side surface of the floating body 21 via the stay 23. However, as shown in FIG. A horizontal plate 24 may be provided. Depending on the floating position of the floating body 21, it is conceivable that the waves act from the left or the right. In such a case, the rolling of the floating body 21 can be suppressed with respect to the incident wave 16, and the floating body 21 can be shaken. Can be reduced.

このように本参考例にあっては、浮体本体21の一側面部、あるいは両側面部に貫通部25を介して水平板24を設けたことで、浮体本体21における動揺を確実に低減することができる。即ち、図10のグラフに示すように、浮体本体のみの場合、浮体本体の一側面部に鉛直板を固定した場合、浮体本体21の一側面部に貫通部25を介して水平板24を設けた場合(本参考例)、浮体本体21の両側面部に貫通部25を介して水平板24を設けた場合(本参考例の第1変形例)とを比較した。このグラフからわかるように、本参考例で説明した浮体本体21の両側面部に貫通部25を介して水平板24を設けたものは、浮体本体のみ及び浮体本体に鉛直板を固定したものに比べて、浮体本体21のロール角を低減できると共にロール固有周期を長い側に移行でき、浮体本体21における動揺を確実に低減できることがわかる。そして、浮体本体21の一側面部に貫通部25を介して水平板24を設けたものは、更に浮体本体21における動揺の低減効果を向上できることがわかる。   As described above, in the present reference example, the horizontal plate 24 is provided on one side surface or both side surfaces of the floating body 21 via the penetrating portions 25, so that the shaking in the floating body 21 can be reliably reduced. it can. That is, as shown in the graph of FIG. 10, in the case of only the floating body, when a vertical plate is fixed to one side surface of the floating body, a horizontal plate 24 is provided on one side surface of the floating body 21 via the penetrating portion 25. The case (this reference example) compared with the case where the horizontal board 24 was provided in the both side surface part of the floating body 21 via the penetration part 25 (1st modification of this reference example). As can be seen from this graph, the horizontal plate 24 provided on both side surfaces of the floating body 21 described in this reference example through the through-holes 25 is compared to the floating body alone and the vertical body fixed to the floating body. Thus, it can be seen that the roll angle of the floating body 21 can be reduced and the roll natural period can be shifted to the longer side, and the fluctuation in the floating body 21 can be reliably reduced. And what provided the horizontal board 24 in the one side part of the floating body 21 via the penetration part 25 can understand that the reduction effect of the shaking in the floating body 21 can be improved further.

図11に本発明の第3参考例に係る浮体の動揺低減装置を表す概略を示す。本参考例の浮体の動揺低減装置において、図11に示すように、浮体本体31は、前述した各参考例の浮体本体11,21とほぼ同様の構成をなし、長手方向における一側、つまり、側面部に複数のブラケット33を介して回動板34が浮体本体31から所定距離離間して回動自在に支持されている。そして、この回動板34は図示しない駆動装置により回動可能であると共に、浮体本体31の底面より上方にある退避位置(図11にて実線位置)と、浮体本体31の底面とほぼ同位置にある水平位置(図11にて二点鎖線位置)と、浮体本体31の底面から下方へ延出する鉛直位置(図11にて二点鎖線位置)とに停止可能となっている。また、回動板34が水平位置及び鉛直位置にあるとき、浮体本体31と水平板34との間には貫通部35が形成されて通水可能となっている。   FIG. 11 schematically shows a floating body sway reduction device according to a third reference example of the present invention. In the floating body sway reducing device of this reference example, as shown in FIG. 11, the floating body 31 has substantially the same configuration as the floating bodies 11 and 21 of each of the reference examples described above. A rotating plate 34 is supported on the side surface part via a plurality of brackets 33 so as to be spaced apart from the floating body 31 by a predetermined distance. The rotating plate 34 can be rotated by a driving device (not shown), and is in the same position as the retreat position (solid line position in FIG. 11) above the bottom surface of the floating body 31 and the bottom surface of the floating body 31. Can be stopped at a horizontal position (a two-dot chain line position in FIG. 11) and a vertical position (a two-dot chain line position in FIG. 11) extending downward from the bottom surface of the floating body 31. Further, when the rotating plate 34 is in the horizontal position and the vertical position, a through portion 35 is formed between the floating body 31 and the horizontal plate 34 so that water can pass therethrough.

従って、このように構成された回動板34を有する浮体本体31にあっては、水上に浮かした状態で、波上側(図11にて右側)から入射波16が作用すると、回動板34が水平位置にある場合、入射波16は浮体本体31の側面に当たると共に、一部が各貫通部35を通水し、浮体本体31は貫通部35の通水により入射波16の波力を減少できると共に、回動板34が抵抗となってローリングを抑制でき、浮体本体31の動揺を低減できる。また、回動板34が鉛直位置にある場合、入射波16は浮体本体31の側面及び回動板34に当たると共に、一部が各貫通部35を通水し、入射波16の波力を減少できると共に、回動板34によりローリングを抑制でき、浮体本体31の動揺を低減できる。   Therefore, in the floating body 31 having the rotating plate 34 configured as described above, when the incident wave 16 acts from the wave upper side (right side in FIG. 11) in a state of floating on the water, the rotating plate 34 is operated. Is in a horizontal position, the incident wave 16 hits the side surface of the floating body 31 and part of the water passes through the through portions 35. The floating body 31 reduces the wave force of the incident wave 16 by passing through the through portions 35. In addition, the rotating plate 34 becomes a resistance and can suppress rolling, and the swinging of the floating body 31 can be reduced. In addition, when the rotating plate 34 is in the vertical position, the incident wave 16 hits the side surface of the floating body 31 and the rotating plate 34, and part of the incident wave 16 passes through each through portion 35 to reduce the wave force of the incident wave 16. In addition, rolling can be suppressed by the rotating plate 34, and fluctuation of the floating body 31 can be reduced.

そして、浮体本体31に対して回動板34が退避位置と水平位置と鉛直位置に回動して停止可能であるため、浮体本体31を作業船に適用した場合には、作業船の航行時には回動板34を退避位置に移動することで、航行の邪魔になることはない。また、周辺に干渉物(岸壁や航行する船舶等)がない場合には、回動板34を水平位置に移動することで、浮体本体31の動揺を確実に低減できる。更に、周辺に干渉物(岸壁や航行する船舶等)がある場合には、回動板34を鉛直位置に移動することで、周辺部材に干渉することなく、浮体本体31の動揺を低減できる。なお、この場合であっても、回動板34は水平位置でこの上面が浮体本体31の底面とほぼ同一高さにすることが望ましく、鉛直位置では上端が浮体本体31の底面とほぼ同一高さにすることが望ましい。   Since the rotation plate 34 can be rotated to the retracted position, the horizontal position, and the vertical position with respect to the floating body 31 and can be stopped, when the floating body 31 is applied to a work ship, By moving the rotating plate 34 to the retracted position, there is no hindrance to navigation. In addition, when there are no obstacles (such as a quay or a navigating ship) in the vicinity, the swing of the floating body 31 can be reliably reduced by moving the rotating plate 34 to the horizontal position. Furthermore, when there is an interference (such as a quay or a navigating ship) in the vicinity, the swinging of the floating body 31 can be reduced by moving the rotating plate 34 to the vertical position without interfering with the peripheral members. Even in this case, it is desirable that the upper surface of the rotating plate 34 is approximately the same height as the bottom surface of the floating body 31 in the horizontal position, and the upper end is substantially the same height as the bottom surface of the floating body 31 in the vertical position. It is desirable to make it small.

なお、上述の参考例では、浮体本体31の一方の側面部に回動板34を設けたが、浮体本体31の左右の側面部に回動板34を設けてもよい。   In the above-described reference example, the rotating plate 34 is provided on one side surface of the floating body 31, but the rotating plate 34 may be provided on the left and right side portions of the floating body 31.

また、上述の各参考例では、浮体本体11,21,31の側面部に鉛直板14、水平板24、回動板34をそれぞれ設けることで、浮体本体11,21,31のローリングを抑制するようにしたが、浮体本体11,21,31の前後部に鉛直板14、水平板24、回動板34をそれぞれ設けることで、浮体本体11,21,31のピッチングを抑制することができる。   Moreover, in each above-mentioned reference example, the rolling of the floating bodies 11, 21, 31 is suppressed by providing the vertical plate 14, the horizontal plate 24, and the rotating plate 34 on the side surfaces of the floating bodies 11, 21, 31, respectively. However, by providing the vertical plate 14, the horizontal plate 24, and the rotating plate 34 at the front and rear portions of the floating body main bodies 11, 21, 31, pitching of the floating body main bodies 11, 21, 31 can be suppressed.

即ち、図12のグラフに示すように、浮体本体のみの場合、浮体本体11の前部に貫通部15を介して鉛直板14を設けた場合、浮体本体21の前部に貫通部25を介して水平板24を設けた場合とを比較した。このグラフからわかるように、浮体本体のみのものに比べて、浮体本体11の前部に鉛直板14を設けたもの、更に、浮体本体21の前部に水平板24を設けたものの方が、浮体本体11,21のピッチ角を低減でき、浮体本体11,21における動揺を確実に低減できることがわかる。   That is, as shown in the graph of FIG. 12, in the case of only the floating body, when the vertical plate 14 is provided in the front part of the floating body 11 via the penetration part 15, the penetration part 25 is provided in the front part of the floating body 21. The case where the horizontal plate 24 was provided was compared. As can be seen from this graph, compared to the floating body only, the one provided with the vertical plate 14 in the front portion of the floating body 11 and the one provided with the horizontal plate 24 in the front portion of the floating body 21 are It can be seen that the pitch angles of the floating bodies 11 and 21 can be reduced, and the fluctuations in the floating bodies 11 and 21 can be reliably reduced.

図13に本発明の第4参考例に係る浮体の動揺低減装置を表す概略、図14に本参考例の浮体の動揺低減装置における波周期に対する浮体本体のピッチ角を表すグラフを示す。   FIG. 13 is a schematic diagram showing a floating body fluctuation reducing device according to a fourth reference example of the present invention, and FIG. 14 is a graph showing the pitch angle of the floating body relative to the wave period in the floating body fluctuation reducing device of this reference example.

本参考例の浮体の動揺低減装置において、図13に示すように、浮体本体41は、前述した各参考例の浮体本体11,21,31とほぼ同様の構成をなし、長手方向における前端部及び後端部に水面に沿った水面水平板44が固定されている。   In the floating body sway reducing device of the present reference example, as shown in FIG. 13, the floating body main body 41 has substantially the same configuration as the floating body main bodies 11, 21, 31 of each of the reference examples described above, and the front end in the longitudinal direction and A horizontal water plate 44 along the water surface is fixed to the rear end.

従って、このように構成された水面水平板44を有する浮体本体41にあっては、水上に浮かした状態で、波上側(図13にて右側)から入射波16が作用すると、この入射波16は浮体本体41の前面に当たるが、水面水平板44が抵抗となって浮体本体41のピッチングを抑制でき、浮体本体41の動揺を低減できる。   Therefore, in the floating body main body 41 having the water surface horizontal plate 44 configured as described above, when the incident wave 16 acts from the wave upper side (right side in FIG. 13) while floating on the water, the incident wave 16 Although it hits the front surface of the floating body 41, the water level plate 44 acts as a resistance to suppress the pitching of the floating body 41 and reduce the shaking of the floating body 41.

即ち、図14のグラフに示すように、浮体本体のみの場合、浮体本体41の前端部あるいは後端部に水面水平板44を固定した場合、浮体本体41の前端部及び後端部に水面水平板44を固定した場合とを比較した。このグラフからわかるように、浮体本体のみのものに比べて、浮体本体41の前端部あるいは後端部に水面水平板44を固定したものは、浮体本体41のピッチ角を低減でき、浮体本体21における動揺を確実に低減できることがわかる。そして、浮体本体41の前端部及び後端部に水面水平板44を固定したものは、浮体本体41のピッチ角を更に低減でき、浮体本体21における動揺を確実に低減できることがわかる。   That is, as shown in the graph of FIG. 14, in the case of only the floating body, when the water level plate 44 is fixed to the front end portion or the rear end portion of the floating body 41, the water level is horizontal to the front end portion and the rear end portion of the floating body 41. The case where the plate 44 was fixed was compared. As can be seen from this graph, in comparison with the floating body main body alone, the floating horizontal body 44 fixed to the front end portion or the rear end portion of the floating body main body 44 can reduce the pitch angle of the floating body main body 41 and the floating body main body 21. It can be seen that the fluctuations in can be reliably reduced. And what fixed the water surface horizontal board 44 to the front-end part and rear-end part of the floating body 41 can further reduce the pitch angle of the floating body 41, and it turns out that the rocking | fluctuation in the floating body 21 can be reduced reliably.

図15に本発明の第1実施形態に係る浮体の動揺低減装置を表す概略、図16に本実施形態の浮体の動揺低減装置における波周期に対する浮体本体のロール角を表すグラフを示す。   FIG. 15 is a schematic diagram illustrating the floating body fluctuation reducing apparatus according to the first embodiment of the present invention, and FIG. 16 is a graph illustrating the roll angle of the floating body relative to the wave period in the floating body fluctuation reducing apparatus of the present embodiment.

本実施形態の浮体の動揺低減装置において、図15に示すように、浮体本体51は、前述した実施形態の浮体本体11とほぼ同一の構成をなし、長手方向における一側、つまり、側面部に板状部材54が浮体本体51から所定距離離間して浮体本体51の底面に対して斜め方向に支持されている。この板状部材54は浮体本体51の長手方向寸法とほぼ同じ長さの平板であって、上端部が浮体本体51の底面とほぼ同じ高さ位置にあり、浮体本体51と板状部材54との間には複数のステイと複数の貫通部55が形成されて通水可能となっている。   In the floating body sway reducing device of this embodiment, as shown in FIG. 15, the floating body 51 has substantially the same configuration as the floating body 11 of the above-described embodiment, and is on one side in the longitudinal direction, that is, on the side surface. The plate-like member 54 is supported in an oblique direction with respect to the bottom surface of the floating body 51 at a predetermined distance from the floating body 51. The plate-like member 54 is a flat plate having a length substantially the same as the longitudinal dimension of the floating body 51, and has an upper end located at substantially the same height as the bottom surface of the floating body 51, and the floating body 51, the plate-like member 54, A plurality of stays and a plurality of through portions 55 are formed between them to allow water to pass therethrough.

従って、このように構成された板状部材54を有する浮体本体51にあっては、水上に浮かした状態で、波上側(図15にて左側)から入射波16は浮体本体51の側面に当たると共に、一部が貫通部55を通水する。そのため、浮体本体51は、貫通部55の通水により入射波16の波力を減少できると共に、板状部材54及び貫通部55が抵抗となってローリングを抑制でき、浮体本体51の動揺を低減できる。   Therefore, in the floating body 51 having the plate-like member 54 configured as described above, the incident wave 16 hits the side surface of the floating body 51 from the wave upper side (left side in FIG. 15) while floating on the water. Part of the water passes through the through portion 55. Therefore, the floating body 51 can reduce the wave force of the incident wave 16 due to water passing through the through portion 55, and the plate-like member 54 and the through portion 55 can be resisted to suppress rolling, thereby reducing the fluctuation of the floating body 51. it can.

この場合、浮体本体51の底面に対する板状部材54の角度により浮体本体における動揺の低減効果が変わる。即ち、図16のグラフに示すように浮体本体51の底面に対して板状部材54の角度を変化させた場合のロール角を比較した。このグラフからわかるように、板状部材54を浮体本体51の底面に対して、斜め下方向(0〜90度)に設けた場合も、浮体本体51のロール角を低減できると共にロール固有周期を長い側に移行でき、浮体本体51における動揺を確実に低減する効果がある。ここで、浮体本体51の底面の延長面に対して板状部材54がなす角度が0度(α=0°)の時は、板状部材54は第2参考例における水平板24の位置にあり、浮体本体51の底面の延長面に対して板状部材54の角度が90度(α=90°)の時は、板状部材54は第1参考例における鉛直板14の位置にあり、浮体本体51の底面の延長面に対して板状部材の角度は−90度から+90度(図15において反時計回りを正とする。)の範囲で任意に設定できる。   In this case, the effect of reducing shaking in the floating body changes depending on the angle of the plate-like member 54 with respect to the bottom surface of the floating body 51. That is, as shown in the graph of FIG. 16, the roll angles when the angle of the plate-like member 54 was changed with respect to the bottom surface of the floating body 51 were compared. As can be seen from this graph, when the plate-like member 54 is provided obliquely downward (0 to 90 degrees) with respect to the bottom surface of the floating body 51, the roll angle of the floating body 51 can be reduced and the roll natural period can be reduced. It is possible to shift to the long side, and there is an effect of reliably reducing the shaking in the floating body 51. Here, when the angle formed by the plate member 54 with respect to the extended surface of the bottom surface of the floating body 51 is 0 degree (α = 0 °), the plate member 54 is positioned at the position of the horizontal plate 24 in the second reference example. Yes, when the angle of the plate member 54 is 90 degrees (α = 90 °) with respect to the extended surface of the bottom surface of the floating body 51, the plate member 54 is at the position of the vertical plate 14 in the first reference example, The angle of the plate member with respect to the extended surface of the bottom surface of the floating body 51 can be arbitrarily set in a range of −90 degrees to +90 degrees (counterclockwise in FIG. 15 is positive).

なお、上述の実施形態では、浮体本体51の一方の側面部に板状部材54を設けたが、浮体本体51の左右の側面部に板状部材を設けてもよい。浮体本体は51の浮遊位置によっては、波が左あるいは右から作用することが考えられ、このような場合には、入射波16に対して浮体本体51のローリングを抑制でき、浮体本体51の動揺を低減できる。また、上述の実施形態において、板状部材54は、例えば、前述の第1参考例と同様にステイを介して固定して設けられている。しかし、前述の第1参考例と同様に、浮体本体の一側面部に複数のガイドレールを固定し、このガイドレールにはガイド部材が昇降自在に支持され、このガイド部材にステイを介して板状部材54を支持し、このガイド部材を駆動装置(例えば、駆動チェーン、ねじ軸、流体シリンダ等)により昇降可能としてもよい。   In the above-described embodiment, the plate-like member 54 is provided on one side surface of the floating body 51, but the plate-like member may be provided on the left and right side portions of the floating body 51. Depending on the floating position of the floating body 51, it is conceivable that the wave acts from the left or right. In such a case, the floating body 51 can be prevented from rolling with respect to the incident wave 16, and the floating body 51 can be shaken. Can be reduced. In the above-described embodiment, the plate-like member 54 is fixedly provided via a stay, for example, as in the first reference example described above. However, as in the first reference example described above, a plurality of guide rails are fixed to one side surface portion of the floating body, and a guide member is supported on the guide rails so as to be movable up and down. The guide member 54 may be supported, and the guide member may be moved up and down by a drive device (for example, a drive chain, a screw shaft, a fluid cylinder, etc.).

図17に本発明の第2実施形態に係る浮体の動揺低減装置を表す概略、図18に本実施形態の浮体の動揺低減装置における波周期に対する浮体本体のロール角を表すグラフを示す。   FIG. 17 is a schematic diagram showing a floating body fluctuation reducing apparatus according to the second embodiment of the present invention, and FIG. 18 is a graph showing the roll angle of the floating body relative to the wave period in the floating body fluctuation reducing apparatus of this embodiment.

本実施形態の浮体の動揺低減装置において、図17に示すように、浮体本体61は、前述した実施形態の浮体本体11とほぼ同一の構成をなし、長手方向における一側、つまり、板状部材64が浮体本体61から所定距離離間して浮体本体61の側面部の底部からヒンジ機構を介して垂下されている。この板状部材64は浮体本体61の長手方向寸法とほぼ同じ長さの平板であって、浮体本体61と板状部材64との間には複数の貫通部65が形成されて通水可能となっている。   In the floating body sway reducing device of this embodiment, as shown in FIG. 17, the floating body 61 has substantially the same configuration as the floating body 11 of the above-described embodiment, and is one side in the longitudinal direction, that is, a plate-like member. 64 is hung from the bottom of the side surface portion of the floating body 61 via a hinge mechanism at a predetermined distance from the floating body 61. The plate member 64 is a flat plate having a length substantially the same as the longitudinal dimension of the floating body 61, and a plurality of through portions 65 are formed between the floating body 61 and the plate member 64 so that water can pass therethrough. It has become.

従って、このように構成された板状部材64を有する浮体本体61にあっては、水上に浮かした状態で、波上側(図17にて左側)から入射波16は浮体本体61の側面に当たると共に、一部が貫通部65を通水する。そのため、浮体本体61は、貫通部65の通水により入射波16の波力を減少できると共に、板状部材64及び貫通部65が抵抗となってローリングを抑制でき、浮体本体61の動揺を低減できる。   Therefore, in the floating body 61 having the plate-like member 64 configured as described above, the incident wave 16 hits the side surface of the floating body 61 from the wave upper side (left side in FIG. 17) while floating on the water. , A part passes through the penetrating part 65. Therefore, the floating body 61 can reduce the wave force of the incident wave 16 due to water passing through the through portion 65, and the plate-like member 64 and the through portion 65 can be resisted to suppress rolling, thereby reducing the shaking of the floating body 61. it can.

図18に示すように板状部材64を設けた場合、浮体本体61のロール角を低減できると共にロール固有周期を長い側に移行でき、浮体本体61における動揺を確実に低減できる効果がある。   When the plate-like member 64 is provided as shown in FIG. 18, the roll angle of the floating body 61 can be reduced, and the roll natural period can be shifted to the long side, and the fluctuation in the floating body 61 can be reliably reduced.

なお、上述の実施形態では、浮体本体61の一方の側面部に板状部材64を設けたが、浮体本体61の左右の側面部に板状部材を設けてもよい。浮体本体は61の浮遊位置によっては、波が左あるいは右から作用することが考えられ、このような場合には、入射波16に対して浮体本体61のローリングを抑制でき、浮体本体61の動揺を低減できる。   In the above-described embodiment, the plate-like member 64 is provided on one side surface portion of the floating body 61. However, the plate-like member may be provided on the left and right side portions of the floating body 61. Depending on the floating position of the floating body 61, it is conceivable that the wave acts from the left or right. In such a case, the floating body 61 can be prevented from rolling with respect to the incident wave 16, and the floating body 61 can be shaken. Can be reduced.

図19に本発明の第5参考例に係る浮体の動揺低減装置を表す概略、図20に本参考例の浮体の動揺低減装置における波周期に対する浮体本体のピッチ角を表すグラフを示す。   FIG. 19 is a schematic diagram showing a floating body fluctuation reducing apparatus according to a fifth reference example of the present invention, and FIG. 20 is a graph showing the pitch angle of the floating body relative to the wave period in the floating body fluctuation reducing apparatus of this reference example.

本参考例の浮体の動揺低減装置において、図19に示すように、浮体本体71は、前述した各実施形態及び各参考例の浮体本体とは異なり、浮体の長手方向の両端側の底角部76が取り除かれ、長手方向における断面は台形状とされている。また、長手方向における前端部及び後端部にL字型の板状部材74が外向きに固定されている。この板状部材74の底部は、水面より下部に位置しており、かつ、浮体本体71の底面とほぼ同じ高さに位置している。   In the floating body sway reduction device of this reference example, as shown in FIG. 19, the floating body main body 71 is different from the floating body main body of each embodiment and each reference example described above, and the bottom corners on both ends in the longitudinal direction of the floating body. 76 is removed, and the cross section in the longitudinal direction is trapezoidal. Further, L-shaped plate-like members 74 are fixed outward at the front end portion and the rear end portion in the longitudinal direction. The bottom of the plate-like member 74 is located below the water surface and is located at substantially the same height as the bottom surface of the floating body 71.

従って、このように構成された板状部材74を有する浮体本体71にあっては、水上に浮かした状態で、波上側(図19において左側)から入射波16が作用すると、この入射波16は浮体本体71の前面に当たるが、板状部材74が抵抗となって、浮体本体71のピッチングを抑制でき、浮体本体71の動揺を低減できる。   Therefore, in the floating body 71 having the plate-like member 74 configured as described above, when the incident wave 16 acts from the wave upper side (left side in FIG. 19) in a state of floating on the water, the incident wave 16 is Although it hits the front surface of the floating body 71, the plate-like member 74 becomes a resistance, so that the pitching of the floating body 71 can be suppressed and the shaking of the floating body 71 can be reduced.

即ち、図20のグラフに示すように、浮体本体のみの場合、浮体本体71の前端部及び後端部に板状部材74を固定した場合、浮体本体71の前端部あるいは後端部に板状部材74を固定した場合、浮体本体71の前端部に板状部材74を固定し、後端部に第4参考例で前述した水面水平板44を固定した場合、とを比較した。このグラフからわかるように、浮体本体のみのものに比べて、板状部材74等を設けたものは、浮体本体71のピッチ角を低減でき、浮体本体71における動揺を確実に低減できることがわかる。   That is, as shown in the graph of FIG. 20, in the case of only the floating body, when the plate-like member 74 is fixed to the front end portion and the rear end portion of the floating body main body 71, the plate shape is formed at the front end portion or the rear end portion of the floating body main body 71. When the member 74 was fixed, the plate-like member 74 was fixed to the front end part of the floating body 71, and the case where the water surface horizontal plate 44 described above in the fourth reference example was fixed to the rear end part was compared. As can be seen from this graph, it can be seen that the one provided with the plate-like member 74 and the like can reduce the pitch angle of the floating body 71 and can surely reduce the shaking in the floating body 71 as compared with the floating body alone.

なお、上述の参考例では、L字型の板状部材74の底部は、浮体本体71の底面とほぼ同じ高さとしているが、本発明はこれに限定されず、L字型の板状部材74の底部が水面より下部に位置するように固定したものであれば、浮体本体71のピッチ角を低減でき、浮体本体71における動揺を確実に低減できる。   In the above-described reference example, the bottom of the L-shaped plate member 74 has substantially the same height as the bottom surface of the floating body 71, but the present invention is not limited to this, and the L-shaped plate member. If the bottom of 74 is fixed so as to be positioned below the water surface, the pitch angle of the floating body 71 can be reduced, and the shaking in the floating body 71 can be reliably reduced.

図21に第1参考例の第3変形例を示す。なお、図1と異なり平面図であるから、喫水線が示されていないことに留意されたい。図21において、鉛直板14aは、鉛直板14aの延在方向に略直交するよう形成された間隙により分割されている。図22は鉛直板14aを設けた浮体の動揺低減装置における波周期に対する浮体本体11のロール角と、浮体本体11のみの場合のロール角、及び一体とされた鉛直板14を設けた浮体の動揺低減装置における浮体本体11のロール角とを比較したグラフである。   FIG. 21 shows a third modification of the first reference example. It should be noted that the waterline is not shown because it is a plan view unlike FIG. In FIG. 21, the vertical plate 14a is divided by a gap formed so as to be substantially orthogonal to the extending direction of the vertical plate 14a. FIG. 22 shows the roll angle of the floating body 11 with respect to the wave period in the floating body shake reduction apparatus provided with the vertical plate 14a, the roll angle when only the floating body 11 is provided, and the swing of the floating body provided with the integrated vertical plate 14. It is the graph which compared the roll angle of the floating body main body 11 in a reduction device.

図22からわかるように、鉛直板14aの延在方向に略直交するよう形成された間隙により分割された鉛直板14aを設けた場合も、一体とされた鉛直板14を設けた場合には及ばないが、浮体本体11のロール角を低減できると共にロール固有周期を長い側に移行でき、浮体本体11における動揺を確実に低減することができる。   As can be seen from FIG. 22, the case where the vertical plate 14a divided by the gap formed so as to be substantially orthogonal to the extending direction of the vertical plate 14a is also provided when the integrated vertical plate 14 is provided. However, the roll angle of the floating body 11 can be reduced and the roll natural period can be shifted to the longer side, and the shaking in the floating body 11 can be reliably reduced.

同様に、第2参考例に示した水平板の延在方向に略直交するよう形成された間隙により分割された水平板を設けた場合、及び第2実施形態に示した板状部材の延在方向に略直交するよう形成された間隙により分割された板状部材を設けた場合も、浮体本体11のロール角を低減できると共にロール固有周期を長い側に移行でき、浮体本体11における動揺を確実に低減することができる。   Similarly, when a horizontal plate divided by a gap formed so as to be substantially orthogonal to the extending direction of the horizontal plate shown in the second reference example is provided, and the extension of the plate-like member shown in the second embodiment Even when a plate-like member divided by a gap formed so as to be substantially orthogonal to the direction is provided, the roll angle of the floating body 11 can be reduced and the roll natural period can be shifted to the longer side, so that the floating body 11 can be reliably shaken. Can be reduced.

図23に本発明の第6参考例に係る浮体の動揺低減装置を表す断面図、図24に本発明の第6参考例に係る浮体の動揺低減装置を表す側面図、図25に本参考例の浮体の動揺低減板において、図26に示す条件下での波周期に対する浮体本体のピッチ角を表すグラフを示す。   FIG. 23 is a cross-sectional view illustrating a floating body sway reducing device according to a sixth reference example of the present invention, FIG. 24 is a side view illustrating a floating body sway reducing device according to a sixth reference example of the present invention, and FIG. FIG. 27 is a graph showing the pitch angle of the floating body relative to the wave period under the conditions shown in FIG.

本参考例の浮体の動揺低減装置において、図24に示すように、浮体本体81は、例えば、鋼板によって形成され、柱状で、上下方向に貫通する空間が中央に形成された中空とされている。また、浮体本体81内部に密閉された複数の浮き室(図示略)が設けられている。そのため、浮体本体81はこの浮き室によって発生する浮力により水上(喫水線82)に浮かぶことができる。   In the floating body sway reducing device of this reference example, as shown in FIG. 24, the floating body main body 81 is formed of, for example, a steel plate, is columnar, and is hollow with a vertically penetrating space formed in the center. . In addition, a plurality of floating chambers (not shown) are provided inside the floating body 81. Therefore, the floating body 81 can float on the water (draft line 82) by the buoyancy generated by the floating chamber.

この第6参考例に係る浮体は、上記の第1実施形態及び第2実施形態や、第1参考例〜第5参考例に係る浮体に比べて喫水が深い構成となっている。第1実施形態及び第2実施形態や、第1参考例〜第5参考例に係る浮体は図29(a)に示すように喫水幅Xが浮体の水平最大長さ(長手方向長さ)Yに比べて小さくなるような構成で、喫水の浅い浮体である。一方、本参考例に係る浮体は図29(b)に示すように喫水幅Xが浮体の水平長さYとほぼ同じになるような構成で、喫水の深い浮体である。   The floating body according to the sixth reference example has a deeper draft than the first and second embodiments described above and the floating bodies according to the first to fifth reference examples. In the floating bodies according to the first and second embodiments and the first to fifth reference examples, the draft width X is the horizontal maximum length (longitudinal length) Y of the floating body as shown in FIG. It is a shallow floating draft with a structure that is smaller than On the other hand, as shown in FIG. 29 (b), the floating body according to the present reference example is a floating body with a deep draft with a configuration in which the draft width X is substantially the same as the horizontal length Y of the floating body.

このような、喫水が浮体の水平最大長さと同程度となる浮体では、ローリング及びピッチングの固有周期は入射波の卓越周期に比べ十分に長いため、入射波が作用しても入射波の卓越周期成分による動揺はほとんど起こらないが、入射波により誘起される固有周期の動揺が起こりやすい。なお、卓越周期とは、実海面で発生頻度の高い波周期範囲を意味しており、この周期よりも動揺の固有周期が長い方にずれていると、波周期成分の動揺は発生しにくい特性となる。   In such a floating body where the draft is about the same as the horizontal maximum length of the floating body, the natural period of rolling and pitching is sufficiently longer than the dominant period of the incident wave. The fluctuation due to the component hardly occurs, but the fluctuation of the natural period induced by the incident wave tends to occur. The dominant period means the wave period range that occurs frequently on the actual sea surface, and if the natural period of fluctuation deviates from this period, the fluctuation of the wave period component is unlikely to occur. It becomes.

図23、24に示されているようにこの浮体本体81の外周側に対して、ステイ87を介して浮体本体81の底面とほぼ同じ高さ位置に動揺低減板84が支持されている。この動揺低減板84は、上記の第2参考例に係る水平板と同様に平板であって、図23に示すように浮体本体の外周側全周にわたって形成されている。そして、浮体本体81と動揺低減板84との間には複数のステイ87により区画された複数の貫通部85が形成され、この貫通部85は通水可能とされている。なお、本参考例では、動揺低減板84として水平板を設けているが、上記の第1参考例で説明した鉛直板や、第1実施形態で説明した板状部材であってもよい。すなわち、動揺低減板84とは、浮体本体81のロール角を低減するとともにロール固有周期を長い側に移行することにより、入射波の波力を減少させて浮体本体81の動揺を低減させるような板を意味し、動揺低減板84には、少なくとも上記の第1実施形態及び第2実施形態や、第1参考例〜第5参考例で説明した板はすべて含まれるものである。   As shown in FIGS. 23 and 24, the sway reduction plate 84 is supported on the outer peripheral side of the floating body 81 by a stay 87 at substantially the same height as the bottom surface of the floating body 81. This sway reduction plate 84 is a flat plate like the horizontal plate according to the second reference example, and is formed over the entire outer circumference side of the floating body as shown in FIG. A plurality of penetrating portions 85 partitioned by a plurality of stays 87 are formed between the floating body 81 and the fluctuation reducing plate 84, and the penetrating portions 85 can pass water. In this reference example, a horizontal plate is provided as the fluctuation reduction plate 84, but the vertical plate described in the first reference example or the plate-like member described in the first embodiment may be used. That is, the fluctuation reducing plate 84 reduces the roll angle of the floating body 81 and shifts the roll natural period to the longer side, thereby reducing the wave force of the incident wave and reducing the fluctuation of the floating body 81. This means a plate, and the fluctuation reducing plate 84 includes at least all of the plates described in the first and second embodiments and the first to fifth reference examples.

また、中空とされた浮体本体81の内周側に対して、浮体本体81の底面に動揺低減板83が設けられている。この動揺低減板83は、平板であって、図23に示すように浮体本体81の内周側全周にわたって形成されている。   Further, a fluctuation reducing plate 83 is provided on the bottom surface of the floating body 81 with respect to the inner peripheral side of the floating body 81 that is hollow. The fluctuation reducing plate 83 is a flat plate and is formed over the entire inner circumference side of the floating body 81 as shown in FIG.

このように構成された動揺低減板83,84を有する浮体本体81にあっては、水上に浮かした状態で、波上側(図24にて右側)から入射波86が作用すると、この入射波86は浮体本体81の側面及び動揺低減板84に当たると共に、一部が各貫通部85を通水する。そのため、浮体本体81は、動揺低減板84及び貫通部85が抵抗となって、固有周期のローリング及びピッチングを抑制できる。図26に示す各種の動揺低減板84(Fin1A〜Fin1D)を設けた場合、浮体本体81の波周期に対するピッチ角を図25に示す。各動揺低減板84(Fin1A〜Fin1D)は、全長96mの浮体に対してフィン幅(間隔を含む)8mの種々のフィンを設けたものであり、Fin1Aは、浮体本体81に間隔(貫通部)を設けず、直接浮体本体81に8mの動揺低減板84を設けたものであり、Fin1Bは、浮体本体81との間に0.5mの間隔(貫通部85)を形成して7.5mの動揺低減板84を設けたものであり、Fin1Cは、浮体本体81との間に1.0mの間隔(貫通部85)を形成して7.0mの動揺低減板84を設けたものであり、Fin1Dは、浮体本体81との間に1.9mの間隔(貫通部85)を形成して6.1mの動揺低減板84を設けたものである。図25に示すように、上記の各動揺低減板84(Fin1A〜Fin1D)を設けた場合、動揺低減板84を設けない場合(Fin0)と比較すると、明らかに浮体本体81に対するピッチ角は低減され、浮体本体81の動揺を低減していることがわかる。さらに、浮体本体81の内周側に設けられた動揺低減板83により固有周期のヒービング、ローリング及びピッチングを低減でき、浮体本体81における動揺を低減できる。   In the floating body 81 having the fluctuation reducing plates 83 and 84 configured as described above, when the incident wave 86 acts from the wave upper side (right side in FIG. 24) in a state of floating on the water, the incident wave 86 is activated. Hits the side surface of the floating body 81 and the vibration reduction plate 84, and part of the water passes through each through portion 85. Therefore, in the floating body 81, the fluctuation reducing plate 84 and the penetrating portion 85 serve as resistances, and rolling and pitching of the natural period can be suppressed. FIG. 25 shows the pitch angle with respect to the wave period of the floating body 81 when the various fluctuation reduction plates 84 (Fin1A to Fin1D) shown in FIG. 26 are provided. Each sway reduction plate 84 (Fin1A to Fin1D) is provided with various fins having a fin width (including an interval) of 8 m with respect to a floating body having a total length of 96 m, and Fin1A is spaced from the floating body main body 81 (through portion). In this case, the 8 m sway reduction plate 84 is provided directly on the floating body 81, and Fin1B forms a distance of 0.5 m between the floating body 81 (penetrating portion 85) and 7.5 m. The vibration reduction plate 84 is provided, and the Fin1C is provided with a vibration reduction plate 84 of 7.0 m by forming a space of 1.0 m (through portion 85) between the floating body 81 and the fin 1C. Fin1D is provided with a 6.1 m sway reduction plate 84 with a space of 1.9 m (through portion 85) formed between the body 1 and the floating body 81. As shown in FIG. 25, when each of the above-described vibration reduction plates 84 (Fin1A to Fin1D) is provided, the pitch angle with respect to the floating body 81 is obviously reduced as compared with the case where the fluctuation reduction plate 84 is not provided (Fin0). It can be seen that the fluctuation of the floating body 81 is reduced. Further, the fluctuation reducing plate 83 provided on the inner peripheral side of the floating body 81 can reduce the natural period of heaving, rolling, and pitching, and the fluctuation in the floating body 81 can be reduced.

なお、本参考例では、動揺低減板83,84を浮体本体81の内周側及び外周側の全周にわたって形成しているが、本発明はこれに限定されず、動揺低減板83,84は間隙を設けて形成する構成としても、同様の作用・効果を奏することができる。   In this reference example, the vibration reduction plates 83 and 84 are formed over the entire inner circumference side and outer circumference side of the floating body 81, but the present invention is not limited to this, and the fluctuation reduction plates 83 and 84 are Even when the gap is formed, the same operation and effect can be obtained.

また、図27(a)に示すように浮体本体81の中央が中空になっていないものや、(b)に示すように浮体本体81が円筒状の形状のものであっても、浮体本体81に取付けた動揺低減板83,84は同様の作用・効果を奏することができる。さらに、本参考例では、図24に示すように縦断面形状が一様の浮体を用いて説明したが、図28(a)〜(c)に示すような縦断面形状が一様でない浮体であっても、動揺低減板83,84は同様の作用・効果を奏することができる。つまり、本発明の動揺低減板は、種々の形状の浮体に適用することができる。   Further, even if the floating body 81 is not hollow at the center as shown in FIG. 27A, or the floating body 81 is cylindrical as shown in FIG. The sway reduction plates 83 and 84 attached to can provide the same operations and effects. Further, in this reference example, the floating body having a uniform vertical cross-sectional shape as shown in FIG. 24 has been described, but a floating body having a non-uniform vertical cross-sectional shape as shown in FIGS. Even if it exists, the fluctuation reduction plates 83 and 84 can exhibit the same operation and effect. That is, the fluctuation reducing plate of the present invention can be applied to floating bodies having various shapes.

なお、上述の各実施形態及び各参考例では、浮体本体11,21,31の側面部に鉛直板14、水平板24、回動板34をそれぞれ設けることで、浮体本体11,21,31のローリングを抑制し、浮体本体11,21,31の前後部に鉛直板14、水平板24、回動板34をそれぞれ設けたり、浮体本体41の前後端部に水平板44を設けることで、浮体本体11,21,31のピッチングを抑制したが、浮体本体の両側部及び前後端部に水平板等を設けたローリング及びピッチングを抑制してもよい。   In each of the above-described embodiments and reference examples, the vertical plate 14, the horizontal plate 24, and the rotating plate 34 are provided on the side surfaces of the floating body main bodies 11, 21, 31, respectively. By suppressing the rolling and providing the vertical plate 14, the horizontal plate 24, and the rotating plate 34 on the front and rear portions of the floating body 11, 21, 31, and providing the horizontal plate 44 on the front and rear ends of the floating body 41, the floating body Although the pitching of the main bodies 11, 21, 31 is suppressed, rolling and pitching in which horizontal plates or the like are provided on both sides and front and rear ends of the floating body may be suppressed.

また、上述の各実施形態及び各参考例では、浮体本体11,21,31,41を直方体形状としたが、立方体形状や円柱形状として鉛直板や水平板等を設けてもよい。   Further, in each of the above-described embodiments and reference examples, the floating body bodies 11, 21, 31, and 41 have a rectangular parallelepiped shape, but a vertical plate, a horizontal plate, or the like may be provided as a cubic shape or a cylindrical shape.

11,21,31,41,51,61,71,81 浮体本体
12 喫水線
13,23 ステイ
14,14a 鉛直板
15,25,35,55,65 貫通部
16 入射波
17 ガイドレール
18 ガイド部材
24,44 水平板
33 ブラケット
34 回動板
54,64,74 板状部材
83,84 動揺低減板
11, 21, 31, 41, 51, 61, 71, 81 Floating body 12 Waterline 13, 23 Stay 14, 14a Vertical plate 15, 25, 35, 55, 65 Penetration part 16 Incident wave 17 Guide rail 18 Guide member 24, 44 Horizontal plate 33 Bracket 34 Rotating plates 54, 64, 74 Plate members 83, 84 Oscillation reducing plate

Claims (8)

水上に浮かぶ浮体本体の少なくとも波上側に板状部材を設けると共に、該板状部材の前記浮体本体側端部が、前記浮体本体の底面と同高さから水平方向に所定距離離間し、前記浮体本体は直方体形状をなし、
波上側からの入射波が前記浮体本体の側面に当たると共に、一部が前記浮体本体と前記板状部材との間を通水し、
前記板状部材は、前記浮体本体の底面に対して斜め方向に設けられていることを特徴とする浮体の動揺低減装置。
A plate-like member is provided at least on the wave upper side of the floating body that floats on the water, and the floating body-side end of the plate-like member is spaced a predetermined distance in the horizontal direction from the same height as the bottom surface of the floating body, and the floating body The body has a rectangular parallelepiped shape,
The incident wave from the wave upper side hits the side surface of the floating body, and part of the water passes between the floating body and the plate member ,
The plate-like member is provided in a slanting direction with respect to the bottom surface of the floating body .
前記板状部材は、前記浮体本体から並設された複数のステイを介して所定位置に支持され、該複数のステイの間に通水可能な貫通部が設けられていることを特徴とする請求項1に記載の浮体の動揺低減装置。 The plate-like member is supported at a predetermined position via a plurality of stays arranged side by side from the floating body, and a penetrating portion capable of passing water is provided between the plurality of stays. Item 2. The floating body fluctuation reducing device according to Item 1 . 前記板状部材は該浮体本体の長手方向における少なくとも左右いずれかの一側に設けられたことを特徴とする請求項1又は請求項2に記載の浮体の動揺低減装置。 The plate-like member is floating body motion suppression device according to claim 1 or claim 2, characterized in that provided on at least either the left or right one side in the longitudinal direction of the該浮body. 前記板状部材を前記浮体本体の底面より上方に移動可能としたことを特徴とする請求項1乃至請求項3のいずれかに記載の浮体の動揺低減装置。   4. The floating body sway reduction device according to claim 1, wherein the plate-like member is movable upward from a bottom surface of the floating body. 前記板状部材は、ヒンジ機構を介して垂下されていることを特徴とする請求項1乃至請求項のいずれかに記載の浮体の動揺低減装置。 The plate-like member, floating body motion suppression device according to any one of claims 1 to 4, characterized in that it is suspended via a hinge mechanism. 前記板状部材は、前記浮体本体から並設された前記ヒンジ機構に支持され、該ヒンジ機構に通水可能な貫通部が設けられていることを特徴とする請求項に記載の浮体の動揺低減装置。 The said plate-shaped member is supported by the said hinge mechanism arranged in parallel from the said floating body main body, The penetration part which can permeate | transmit water to this hinge mechanism is provided, The rocking | fluctuation of the floating body of Claim 5 characterized by the above-mentioned. Reduction device. 前記板状部材は、該板状部材の延材方向に略直交するよう形成された間隙により分割されていることを特徴とする請求項1乃至請求項のいずれかに記載の浮体の動揺低減装置。 The said plate-shaped member is divided | segmented by the clearance gap formed so that it might be substantially orthogonal to the extending | stretching material direction of this plate-shaped member, The rocking | fluctuation reduction of the floating body in any one of Claim 1 thru | or 6 characterized by the above-mentioned. apparatus. 請求項1乃至請求項のいずれかに記載の浮体の動揺低減装置と、浮体本体とを備えたことを特徴とする浮体。 A motion suppression device for floating according to any one of claims 1 to 7, the floating body, characterized in that a floating body.
JP2009118952A 2000-05-16 2009-05-15 Floating body fluctuation reducing device and floating body provided with the same Expired - Fee Related JP4848444B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009118952A JP4848444B2 (en) 2000-05-16 2009-05-15 Floating body fluctuation reducing device and floating body provided with the same

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2000142929 2000-05-16
JP2000142929 2000-05-16
JP2009118952A JP4848444B2 (en) 2000-05-16 2009-05-15 Floating body fluctuation reducing device and floating body provided with the same

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP2001108277A Division JP4358456B2 (en) 2000-05-16 2001-04-06 Floating body fluctuation reducing device and floating body provided with the same

Publications (2)

Publication Number Publication Date
JP2009184671A JP2009184671A (en) 2009-08-20
JP4848444B2 true JP4848444B2 (en) 2011-12-28

Family

ID=41068348

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009118952A Expired - Fee Related JP4848444B2 (en) 2000-05-16 2009-05-15 Floating body fluctuation reducing device and floating body provided with the same

Country Status (1)

Country Link
JP (1) JP4848444B2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6026197B2 (en) * 2012-09-24 2016-11-16 三井造船株式会社 Floating structure and vibration reduction device thereof
JP6366124B2 (en) * 2013-06-26 2018-08-01 ジャパンマリンユナイテッド株式会社 Floating structure
KR101402763B1 (en) 2013-07-30 2014-06-03 김인기 Rolling pitching damper for aquatic facilities
KR101603167B1 (en) 2015-01-29 2016-03-14 한국해양과학기술원 Maritime floating structure comprising plurality floater
DE102021006269A1 (en) 2021-12-21 2023-06-22 Hans-Josef Bietenbeck Anti-vibration device for light floating platforms

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6018090A (en) * 1983-07-09 1985-01-30 Sony Corp Reproducer of color video signal
US5095839A (en) * 1990-10-09 1992-03-17 Scott G. Nettleman Stabilizer for boats and the like
JP4022973B2 (en) * 1998-02-19 2007-12-19 株式会社Ihi Rolling reduction structure for floating structures
JP3697091B2 (en) * 1998-11-18 2005-09-21 三菱重工業株式会社 Floating body sway reduction device

Also Published As

Publication number Publication date
JP2009184671A (en) 2009-08-20

Similar Documents

Publication Publication Date Title
JP4358456B2 (en) Floating body fluctuation reducing device and floating body provided with the same
JP4848444B2 (en) Floating body fluctuation reducing device and floating body provided with the same
KR20070109824A (en) Anti-sloshing device in moon-pool
JP4619321B2 (en) Mooring equipment
JP5493159B2 (en) Anti-vibration device for floating offshore structures
US20170129571A1 (en) Tapered Column Deep Draft Semi-Submersible (TCDD-SEMI)
KR101138752B1 (en) Apparatus for controling rolling for floating body
KR101487513B1 (en) Wave absorbing apparatus of moonpool
CN1292758A (en) Bilge keel and method for FPSO type petroleum production systems
CA2538492C (en) Apparatus and method for reducing motion of a floating vessel
KR20100055628A (en) Movable bilge keel of ships and floating structures and its activation to reduce roll motion
WO2016103813A1 (en) Oscillation mitigation device and floating body provided with same
JP4022973B2 (en) Rolling reduction structure for floating structures
KR20140144555A (en) Anti-roll apparatus for ship
JP4078006B2 (en) Wave-resistant large floating body
JP4024793B2 (en) Pitching reduction device for ships
JP4469985B2 (en) Wave-absorbing structure
KR200480500Y1 (en) Floating type production structure
KR20200021752A (en) Rolling decreasing and side slipped preventing type ship
JP2007253753A (en) Pile type mooring device
JP4789484B2 (en) Bow valve and ship equipped with the same
KR200474803Y1 (en) Anti-Rolling Tank
RU2011600C1 (en) Ship position stabilizer
KR101824479B1 (en) Offshore structure
JP2001107334A (en) Floating wave dissipating device

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20090515

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20110218

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A132

Effective date: 20110531

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20110801

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20110927

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20111017

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20141021

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Ref document number: 4848444

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

S533 Written request for registration of change of name

Free format text: JAPANESE INTERMEDIATE CODE: R313533

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313115

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees