JP2514487B2 - Floating structure with legs - Google Patents
Floating structure with legsInfo
- Publication number
- JP2514487B2 JP2514487B2 JP3185909A JP18590991A JP2514487B2 JP 2514487 B2 JP2514487 B2 JP 2514487B2 JP 3185909 A JP3185909 A JP 3185909A JP 18590991 A JP18590991 A JP 18590991A JP 2514487 B2 JP2514487 B2 JP 2514487B2
- Authority
- JP
- Japan
- Prior art keywords
- floating body
- legs
- leg
- deck
- floating
- 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
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は、脚付き浮体構造物に関
する。浮体式飛行場等の人工島等を海底地盤特性に影響
されず、海底地形に拘らず建設可能とし、また浮体が受
ける地震時の過大な動水圧荷重を低減可能とし、更に潮
位変化に対応可能な脚付き浮体構造物に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floating structure with legs. Artificial islands such as floating airfields can be constructed without being affected by the characteristics of the seabed, regardless of the seafloor topography, and it is possible to reduce the excessive hydrodynamic load at the time of an earthquake that the floating body receives, and it is also possible to respond to tide changes The present invention relates to a floating structure with legs.
【０００２】[0002]
【従来の技術】従来の脚付き浮体構造物では、例えば海
洋開発論文集（土木学会海洋開発委員会ＶＯＬ．５〔１
９８９〕ＰＰ４９〜５４）にある有脚浮揚式係船岸と呼
ばれる図７に示す浮体のように、浮体１の自重、及びデ
ッキ５上の上載荷重は浮力で支え、海底３に打設した鋼
管杭等の複数本の脚体２により波浪等による動揺、傾斜
を抑制するものであり、更に、脚体２と浮体１間に相対
的な上下動を許すローラー１９を設けた係留環１８を取
付け、潮位変化に対応可能としている。BACKGROUND OF THE INVENTION In the conventional leg with a floating structure, for example Ocean Development Papers (Japan Society of Civil Engineers Marine Development Committee VOL. 5 [1
989] PP49 to 54), the floating body 1 shown in FIG. 7, which is called a levitating quay, supports the weight of the floating body 1 and the loading load on the deck 5 by buoyancy, and a steel pipe pile placed on the seabed 3. A plurality of legs 2 such as the above are used to suppress shaking and inclination due to waves and the like, and further, a mooring ring 18 provided with a roller 19 allowing relative vertical movement is attached between the legs 2 and the floating body 1, It is capable of responding to tide changes.
【０００３】[0003]
【発明が解決しようとする課題】前記従来の脚付き浮体
構造物において、潮位変化に対応するため脚体２は浮体
１の一部を貫通する形で海底３に貫入される。そのた
め、海上部には脚体２の頭部が突き出て、低潮位時には
浮体のデッキ５上で例えば重機を用いた作業等を行う際
に障害となる。また、デッキ上を有効に用いようとする
には浮体周縁部のみに脚体２を設ける配管構造により設
計上の制約となる。更に、浮体１を大型にする場合でし
かも脚体数を少なくしたい場合や波浪、流れ、風と地震
等にもたらされる水平荷重が大きくなるような設計条件
下では、最適の位置に脚体を設けることができなく、ま
た脚の剛性を高め大形にする必要があるし、浮体を脚体
に固定し上下に動けるためのローラーから構成される係
留環構造も大型で複雑になる。In the conventional floating body structure with legs, the leg body 2 penetrates the seabed 3 so as to penetrate a part of the float body 1 in order to cope with a change in tide level. Therefore, the heads of the legs 2 project to the upper part of the sea, which becomes an obstacle when performing work using heavy equipment on the deck 5 of the floating body at low tide. Further, in order to effectively use the deck, there is a design limitation due to the piping structure in which the legs 2 are provided only on the peripheral edge of the floating body. Further, when the floating body 1 is to be made large and the number of legs is to be reduced, or under the design conditions in which the horizontal load caused by waves, currents, winds and earthquakes becomes large, the legs are provided at optimal positions. In addition, it is necessary to increase the rigidity of the legs and make them large, and the mooring ring structure composed of rollers for fixing the floating body to the legs and moving it up and down becomes large and complicated.
【０００４】[0004]
【課題を解決するための手段】本発明は、上記の目的を
達成するためになされたものであり、上面が最低潮位よ
り低いレベルを有し、かつ浮体自重より若干小さい浮力
を生ずる下部浮体と、下面が最高潮位より高いレベルを
有するデッキと、下部浮体とデッキとを連結する支持部
材とからなり、該支持部材間に外海と連通する区域を形
成し、前記浮体を脚体により水平可動に支承した脚付き
浮体構造物に係る。本発明は、浮体自重の大部分を下部
浮体に作用する浮力によって受ける一方、下部浮体に立
設した支持部材によりデッキを支持し、潮位の変動を支
持部材に沿わせることにより、潮位の変動による浮力の
変化を出来るだけ小さくし、かかる浮体構造を脚体によ
り水平可動に支承する。前記浮体は下部浮体と、下部浮
体に立設した支持部材により支持されるデッキとにより
構成されるが、本発明で浮体自重とあるのは、浮体上に
載荷重がある場合、この載荷重を浮体自重の中に含める
ことができる。また、本発明の脚付き浮体構造物は脚体
を張力材で結合する場合がある。また、本発明の脚付き
浮体構造物は脚体の上部に水平力に対する緩衝機構を備
え、該緩衝機構を介して下部浮体の下部を脚体により支
承する場合がある。SUMMARY OF THE INVENTION The present invention has been made to achieve the above-mentioned object, and has a lower floating body having an upper surface having a level lower than the lowest tide level and producing a buoyancy slightly lower than the floating body's own weight. , A lower surface is composed of a deck having a level higher than the highest tide level, and a supporting member connecting the lower floating body and the deck, and an area communicating with the open sea is formed between the supporting members, and the floating body is horizontally movable by legs. This relates to the supported floating structure with legs. The present invention receives most of the floating body's own weight by the buoyancy acting on the lower floating body, while supporting the deck by a supporting member standing on the lower floating body, and by allowing the fluctuation of the tide level to follow the supporting member, The change in buoyancy is made as small as possible, and the floating structure is supported horizontally by the legs. The floating body is composed of a lower floating body and a deck supported by a support member provided upright on the lower floating body. In the present invention, the floating body dead weight means that when the floating body has a loading load, It can be included in the weight of the floating body. Further, in the floating body structure with legs of the present invention, the legs may be joined by a tension material. Further, the legged floating body structure of the present invention may be provided with a buffering mechanism against the horizontal force on the upper part of the leg, and the lower part of the lower floating body may be supported by the leg via the buffering mechanism.
【０００５】[0005]
【作用】本発明は、浮体自重の大部分を下部浮体の浮力
により受け、浮体を支承する反力を極力小さく抑えるこ
とができる。また、潮位変動にほぼ相当する長さを有す
る支持部材により、下部部材上においてデッキを支持す
るので、柱状、板状等により構成する支持部材に沿って
上下する潮位変動に伴う浮力の変化は小さいものであ
り、浮体の高さはほぼ一定位置に保持することことがで
きる。また、脚体は張力材により水平力に対する対抗力
を強化できる。また、脚体上部において緩衝機構を設
け、地震力等の水平力を受け、脚体下部に作用する反力
を緩和できる。According to the present invention, most of the weight of the floating body is received by the buoyancy of the lower floating body, and the reaction force for supporting the floating body can be suppressed to a minimum. Further, since the deck is supported on the lower member by the support member having a length substantially equivalent to the tide level fluctuation, the change in buoyancy due to the tide level fluctuation along the support member composed of a columnar shape, a plate shape or the like is small. The height of the floating body can be maintained at a substantially constant position. Further, the leg body can strengthen the counter force against the horizontal force by the tension material. In addition, a cushioning mechanism is provided on the upper part of the leg so that the reaction force acting on the lower part of the leg can be mitigated by receiving horizontal force such as seismic force.
【０００６】[0006]
【実施例】本発明の実施例を以下図面を参照して説明す
る。 （実施例１）図１、図２において、コラム式の浮体１
は、浮体１を着座させるための脚体２により、杭４を介
して海底３に固定される。浮体１は上部のデッキ５と着
座孔１２を有する下部浮体６およびそれらを接続させる
支持部材であるコラム７から構成される。脚体２は水平
抵抗力を向上させるため、互いの上部と底部を取付け具
９により張力材８で結合する。張力材は使用しない場合
もある。脚体２の上部に緩衝機構を設置する。本例では
ローラ１０を用いる場合、そしてローラ１０とフエンダ
ー１１を用いる場合が示される。ローラ１０は浮体から
の水平力に対して一定の抵抗特性を有するものが良い。
ローラ１０の代わりに着座孔１２の側壁と脚体２間にダ
ンパー（図示せず）を用いてもよい。また、ローラとダ
ンパーを組み合わせてもよい。ローラを介しない場合、
緩衝機構の態様として、着座孔底部と脚体の頭部の一方
もしくは両方にテフロン等の一定の抵抗特性を有する材
料を被覆してこれらの両者を直接接触させ、そしてダン
パー、フェンダーを用いるようにしてもよい。一定の抵
抗特性を有する緩衝機構を用いた場合、図３に示す水平
荷重−変位曲線のような水平抵抗力特性を浮体１に付与
することが可能となる。図３の領域ＩとＩＩにおいて、
ローラとかダンパーを用い、それに作用する水平力が所
定のＦ1 を超えるとほぼ一定もしくは若干増加するよう
な水平抵抗力特性となる。定常的に発生するような波
浪、風や流れによる荷重を上回るような抵抗力Ｆ1 が設
定される。これを超えるような荷重が作用すると、脚体
２に対し相対的に浮体１は滑る。その変位がある値Ｕ2
に達すると、脚体２の回りにある緩衝機構であるゴムフ
ェンダー等１１は浮体１と接触する。この領域ＩＩＩに
おいては、ゴムフェンダー等１１の荷重・変位特性によ
り図３のような曲線になる。ゴムフェンダー等１１が圧
縮変形できなくなるある変位Ｕ3 に達すると、脚体２の
弾性変形と杭４の地盤中での変形および杭の弾性変形が
生じて領域ＩＶのような変形特性となる。脚体および杭
が崩壊するまでの変位Ｕ4 まで浮体１は移動する。した
がって、地震時に浮体に生ずる過大な動水圧荷重が一本
当たり換算して図３のＦ2 を上回ると、浮体１と脚体２
間には滑りが生じ、浮体の加速度応答が地震加速度より
小さくなり、浮体に作用する慣性力と動水圧荷重が低減
する。その結果、脚体２には過大な反力が作用しないこ
とになる。また、脚体２が図３のように非線形の荷重・
変位特性を示すと、地震や波浪、風等変動荷重が作用す
る際に荷重履歴がヒステリシスを描き、その結果減衰効
果が発揮され浮体の運動が小さくなる。脚体の上部に緩
衝装置を備えるためのゴムフェンダー１１等の取付は脚
体側でなく、浮体側であっても良い。また、着座孔１２
ではなく、デッキ下面に取付けたストッパーを設けても
良い。一方、図４に浮体１と脚体２間の反力と水位の関
係を示す。水位が浮体１の底部に相当する場合、浮体１
の重量が脚体２に反力Ｒ1 として作用する。水位が上昇
すると、反力は減少する。下部浮体である浮力タンク６
の上面に水位が達すると、反力はＲ2 にまで低下する。
更に、水位が上がると、区域１７の存在により支持部材
であるコラム７に相当する浮力増加のみ生ずるため、デ
ッキ５底面において反力はわずか小さいＲ3 となる。完
全に没入すれば反力Ｒ4 のままとなる。したがって、設
計水深を図２にあるよう平均水面１３に対し、最高潮位
１４及び最低潮位１５に相当する水位をそれぞれ、デッ
キ５下面より低いところ、浮力タンク６上面より高いと
ころに設定すれば、外海に連通する区域１７により図４
に示すように潮位変化に対し反力の変化がほとんど生じ
ないようにできる。また、潮位変化のみならず、波によ
る上下動揺も生じにくい。Embodiments of the present invention will be described below with reference to the drawings. (Embodiment 1) In FIGS. 1 and 2, a column type floating body 1
Are fixed to the seabed 3 via the piles 4 by the legs 2 for seating the floating body 1. The floating body 1 is composed of an upper deck 5, a lower floating body 6 having a seating hole 12, and a column 7 which is a supporting member connecting them. In order to improve the horizontal resistance of the legs 2, the top and the bottom of each leg 2 are connected by a tension member 8 by a fixture 9. In some cases, no tension material is used. A cushioning mechanism is installed on the top of the leg 2. In this example, the case where the roller 10 is used, and the case where the roller 10 and the fan 11 are used are shown. The roller 10 preferably has a constant resistance characteristic against the horizontal force from the floating body.
Instead of the roller 10, a damper (not shown) may be used between the side wall of the seating hole 12 and the leg 2. Also, a roller and a damper may be combined. When not via a roller,
As a mode of the cushioning mechanism, one or both of the bottom of the seating hole and the head of the leg is coated with a material having a certain resistance property such as Teflon to directly contact them, and a damper and a fender are used. May be. When the cushioning mechanism having a constant resistance characteristic is used, it becomes possible to give the floating body 1 a horizontal resistance characteristic such as the horizontal load-displacement curve shown in FIG. In regions I and II of FIG. 3,
When a roller or a damper is used and the horizontal force acting on the roller or the damper exceeds a predetermined F 1 , the horizontal resistance characteristic is such that the horizontal force is substantially constant or slightly increases. The resistance F 1 is set so as to exceed the load caused by waves, wind, and flow that are constantly generated. When a load exceeding this is applied, the floating body 1 slides relative to the leg body 2. The value U 2 whose displacement is
When reaching, the rubber fender 11 or the like, which is a cushioning mechanism around the leg 2, comes into contact with the floating body 1. In this region III, a curve as shown in FIG. 3 is formed due to the load / displacement characteristics of the rubber fender 11 or the like. When the rubber fender 11 reaches a certain displacement U 3 where it cannot be compressed and deformed, elastic deformation of the legs 2, deformation of the pile 4 in the ground, and elastic deformation of the pile occur, resulting in a deformation characteristic like region IV. The floating body 1 moves to the displacement U 4 until the legs and the piles collapse. Therefore, if the excessive hydrodynamic load generated on the floating body during an earthquake exceeds F 2 in Fig. 3 per one, floating body 1 and leg 2
A slip occurs between them, the acceleration response of the floating body becomes smaller than the seismic acceleration, and the inertial force acting on the floating body and the hydrodynamic load are reduced. As a result, an excessive reaction force does not act on the leg body 2. In addition, the leg 2 has a non-linear load as shown in FIG.
When the displacement characteristics are shown, the load history draws a hysteresis when a fluctuating load such as an earthquake, a wave, or a wind acts, and as a result, a damping effect is exhibited and the motion of the floating body becomes small. The rubber fender 11 or the like for mounting the shock absorber on the upper portion of the leg may be attached not on the leg side but on the floating side. Also, the seating hole 12
Instead, a stopper attached to the bottom surface of the deck may be provided. On the other hand, FIG. 4 shows the relationship between the reaction force between the floating body 1 and the legs 2 and the water level. If the water level corresponds to the bottom of the floating body 1, the floating body 1
The weight acts on the leg 2 as a reaction force R 1 . When the water level rises, the reaction force decreases. Buoyancy tank 6 which is the lower floating body
When the water level reaches the upper surface of, the reaction force drops to R 2 .
Furthermore, when the water level rises, the presence of the area 17 causes only an increase in buoyancy corresponding to the column 7, which is a supporting member, so that the reaction force at the bottom surface of the deck 5 is slightly small R 3 . When fully immersed, the reaction force remains at R 4 . Therefore, if the design water depth is set below the lower surface of the deck 5 and above the upper surface of the buoyancy tank 6 with respect to the average water level 13 as shown in FIG. The area 17 communicating with FIG.
As shown in, it is possible to prevent the reaction force from changing with respect to the change in tide level. Moreover, not only the tide level change, but also vertical fluctuation due to waves does not easily occur.
【０００７】（実施例２）図５は、潮位変化があって
も、浮体１における板状の支持部材７の貫通孔１６によ
り外海と連通する区域１７を形成し、浮力変化を生じな
いようにしたものである。浮体１は箱型の浮体であり、
着座孔１２を有する下部浮体６と上部のデッキ５の下面
には貫通孔１６があり、最低潮位１５の位置を下部浮体
６の上面の境界以上の高さに設定すれば、最高潮位１４
の場合でも反力の変化が生じないようにすることができ
る。図６は図５と直角方向の立面図である。図のように
海底３の地形が複雑に変化していても、脚体２の長さを
水深にあわせることで対応可能となる。脚体２は杭４で
海底３に固定される。海底への固定は杭でなく重力式ア
ンカー等を用いてもよい。(Embodiment 2) In FIG. 5, even if there is a change in tide level, the through hole 16 of the plate-like support member 7 in the floating body 1 forms an area 17 communicating with the open sea so that no change in buoyancy occurs. It was done. The floating body 1 is a box-shaped floating body,
There is a through hole 16 in the lower surface of the lower floating body 6 having a seating hole 12 and the upper deck 5, and if the position of the lowest tide level 15 is set to a height above the boundary of the upper surface of the lower floating body 6, the highest tide level 14
Even in the case of, it is possible to prevent the reaction force from changing. FIG. 6 is an elevation view in a direction perpendicular to FIG. Even if the topography of the seabed 3 changes intricately as shown in the figure, it can be dealt with by adjusting the length of the leg 2 to the water depth. The legs 2 are fixed to the seabed 3 with piles 4. For fixing to the seabed, a gravity anchor or the like may be used instead of the pile.
【０００８】[0008]
【発明の効果】本発明は、前述のように構成されている
ので、以下に記載するような効果を奏する。本発明で
は、脚体が、デッキを貫通し、デッキ上に突出して存在
することはないので、デッキ表面の全面をすべて有効表
面として使用することができ、広大なスペースを確保で
きる。また、本発明は、浮体自重をほとんど下部浮体の
浮力により受けるので、脚体に作用する力を極力緩和
し、脚体の本数を少なくし、それだけ経済的な設計を施
すことができる。また、本発明は、デッキと下部浮体と
を連結する支持部材により潮位変動による浮力変化を減
少させ、また浮体を脚体により支承するものであるの
で、浮体構造物の安定が良く、またその高さを絶えず一
定に保持できる。波や風、および地震による過大な水平
力が作用した際、下部浮体は脚体により水平可動に支承
されているため、エネルギーを逸散させ、水平力を吸収
することができ、脚体の曲げ剛性を小さくすることがで
きる。 Since the present invention is constructed as described above, it has the following effects. In the present invention, the legs do not penetrate the deck and do not project above the deck, so that the entire surface of the deck can be used as an effective surface, and a vast space can be secured. Further, according to the present invention, since the weight of the floating body is almost entirely received by the buoyancy of the lower floating body, the force acting on the legs can be relaxed as much as possible, the number of legs can be reduced, and an economical design can be performed. Further, according to the present invention, the change in buoyancy due to the tide level change is reduced by the support member connecting the deck and the lower floating body, and the floating body is supported by the legs, so that the floating body structure is stable and its height is high. Can be kept constant. Excessive horizontal due to waves, wind, and earthquakes
When a force is applied, the lower floating body is supported horizontally by the legs.
Is dissipated and absorbs horizontal forces
It is possible to reduce the bending rigidity of the legs.
Wear.
【図１】実施例１を説明する斜視図である。FIG. 1 is a perspective view illustrating a first embodiment.
【図２】実施例１を説明する立面図である。FIG. 2 is an elevation view illustrating the first embodiment.
【図３】脚体に作用する水平荷重と水平変位の関係を示
す図である。FIG. 3 is a diagram showing a relationship between a horizontal load acting on a leg and a horizontal displacement.
【図４】脚体に作用する反力と水位の関係を示す図であ
る。FIG. 4 is a diagram showing a relationship between a reaction force acting on a leg and a water level.
【図５】実施例２を説明する立面図である。FIG. 5 is an elevation view illustrating a second embodiment.
【図６】実施例２を説明する側面図である。FIG. 6 is a side view illustrating a second embodiment.
【図７】従来の技術を説明する図であり、（イ）は立面
図、（ハ）は平面図である。7A and 7B are diagrams illustrating a conventional technique, in which FIG. 7A is an elevation view and FIG. 7C is a plan view.
１ 浮体 ２ 脚体 ３ 海底 ４ 杭 ５ デッキ ６ 下部浮体 ７ 支持部材 ８ 張力材 ９ 取付け具 １０ ローラ １１ フェンダー １２ 着座孔 １３ 平均潮位 １４ 最高潮位 １５ 最低潮位 １６ 貫通孔 １７ 区域 １８ 係留環 １９ ローラー 1 Floating Body 2 Leg Body 3 Seabed 4 Piles 5 Deck 6 Lower Floating Body 7 Supporting Member 8 Tensile Material 9 Fixture 10 Roller 11 Fender 12 Seating Hole 13 Average Tide Level 14 Highest Tide Level 15 Lowest Tide Level 16 Through Hole 17 Area 18 Mooring Ring 19 Roller
Claims (3)
かつ浮体自重より若干小さい浮力を生ずる下部浮体と、
下面が最高潮位より高いレベルを有するデッキと、下部
浮体とデッキとを連結する支持部材とからなり、該支持
部材間に外海と連通する区域を形成し、前記浮体を脚体
により水平可動に支承したことを特徴とする脚付き浮体
構造物。1. The upper surface has a level below the lowest tide level,
And a lower floating body that produces a buoyancy slightly smaller than the floating body's own weight,
The lower surface is composed of a deck having a level higher than the highest tide level, and a supporting member connecting the lower floating body and the deck, and a region communicating with the open sea is formed between the supporting members, and the floating body is supported horizontally by the legs. A floating structure with legs characterized by the above.
脚付き浮体構造物。2. The floating structure with legs according to claim 1, wherein the legs are connected by a tension member.
備え、該緩衝機構を介して下部浮体の下部を脚体により
支承した請求項１または２記載の脚付き浮体構造物。3. The floating body structure with legs according to claim 1, wherein a shock absorbing mechanism against a horizontal force is provided on an upper part of the leg body, and the lower part of the lower floating body is supported by the leg body via the shock absorbing mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3185909A JP2514487B2 (en) | 1991-07-01 | 1991-07-01 | Floating structure with legs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3185909A JP2514487B2 (en) | 1991-07-01 | 1991-07-01 | Floating structure with legs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH059921A JPH059921A (en) | 1993-01-19 |
| JP2514487B2 true JP2514487B2 (en) | 1996-07-10 |
Family
ID=16179005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3185909A Expired - Fee Related JP2514487B2 (en) | 1991-07-01 | 1991-07-01 | Floating structure with legs |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2514487B2 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3605115B2 (en) * | 1994-06-08 | 2004-12-22 | レイケム・コーポレイション | Electrical device containing conductive polymer |
| JP2003064654A (en) * | 2001-08-23 | 2003-03-05 | Kumagai Gumi Co Ltd | Buoyancy structure |
| JP2007088042A (en) | 2005-09-20 | 2007-04-05 | Tdk Corp | Ptc element and manufacturing method thereof |
| US7417527B2 (en) | 2006-03-28 | 2008-08-26 | Tdk Corporation | PTC element |
| JP5191432B2 (en) * | 2009-04-09 | 2013-05-08 | 株式会社西日本流体技研 | Floating pier swing reducing device, floating pier using the same, and swing reducing method |
| CA2801391C (en) * | 2010-06-30 | 2016-10-11 | Exxonmobil Upstream Research Company | Compliant deck tower |
| KR101358413B1 (en) * | 2011-03-29 | 2014-02-05 | 임기승 | Floating Breakwater |
| KR101280535B1 (en) * | 2011-07-01 | 2013-07-02 | 삼성중공업 주식회사 | Ocean Structure Support Apparatus |
| KR101886815B1 (en) * | 2017-05-30 | 2018-08-08 | 이현용 | Semi-Buoyancy Assisted Fixed Marine AirPort |
| KR102189703B1 (en) * | 2018-10-30 | 2020-12-11 | 현대중공업 주식회사 | Gravity Base Structure |
| KR102200364B1 (en) * | 2018-10-30 | 2021-01-07 | 현대중공업 주식회사 | Gravity Base Structure |
| CN111169601A (en) * | 2020-03-04 | 2020-05-19 | 黄芳 | Stable offshore floating platform |
| CN113513005B (en) * | 2021-04-22 | 2022-08-26 | 杜同 | Offshore floating island |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2552461B1 (en) * | 1983-09-22 | 1986-05-02 | Etpm | FLEXIBLE MARINE PLATFORM |
-
1991
- 1991-07-01 JP JP3185909A patent/JP2514487B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH059921A (en) | 1993-01-19 |
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