JPH02136413A - Excessive water depth floating wave dissipation levee - Google Patents
Excessive water depth floating wave dissipation leveeInfo
- Publication number
- JPH02136413A JPH02136413A JP29067788A JP29067788A JPH02136413A JP H02136413 A JPH02136413 A JP H02136413A JP 29067788 A JP29067788 A JP 29067788A JP 29067788 A JP29067788 A JP 29067788A JP H02136413 A JPH02136413 A JP H02136413A
- Authority
- JP
- Japan
- Prior art keywords
- mooring
- floating body
- weight
- waves
- 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.)
- Granted
Links
- 238000007667 floating Methods 0.000 title claims abstract description 59
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 239000000725 suspension Substances 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000013535 sea water Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Landscapes
- Revetment (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は大水深浮消波堤に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a deep-water floating breakwater.
養殖場、ヨツトハーバ−など特定の海域の静穏化を図る
ためには、着底式の防波堤の設置が最も確実と考えられ
るが、海域の地形条件や水深に起因する施工技術、建造
費用の点あるいは撤去、移設等の必要性の点から、浮体
式の消波堤(浮消波堤)が採用されることがある。In order to calm specific sea areas such as fish farms and yacht harbors, it is considered that the most reliable method is to install a bottom-type breakwater, but there are some problems in terms of construction technology, construction cost, etc. due to the topographical conditions and water depth of the sea area. Due to the necessity of removal and relocation, a floating wave-dissipating levee (floating wave-dissipating levee) is sometimes adopted.
浮消波堤には水面に浮上して消波を行う浮体部分と、浮
体部分を所定の位置に繋ぎ留める係留装置の部分とから
なり、従来種々の構造のものが製作又は提案されている
が、大別するとポンツーン型と動揺制御型のものとがあ
る。A floating breakwater consists of a floating part that floats on the water surface to dissipate waves, and a mooring device part that anchors the floating part in a predetermined position, and various structures have been manufactured or proposed in the past. Broadly speaking, there are pontoon type and sway control type.
まず、ポンツーン型では、第2図側面図に示すように、
矩形断面を有する鋼製ないしはコンクリート製の箱型の
浮体01が、チェーンあるいはワイヤからなる係留ライ
ン02によって海底のアンカー03に繋ぎ留められてい
る。この浮消波堤では、入射波04が浮体O1の前面で
反射するとともに、浮体の上下揺れによるエネルギ消費
により、透過波05が減衰し、消波作用が行われる。First, in the pontoon type, as shown in the side view of Figure 2,
A box-shaped floating body 01 made of steel or concrete and having a rectangular cross section is tethered to an anchor 03 on the seabed by a mooring line 02 made of a chain or wire. In this floating wave bank, the incident wave 04 is reflected at the front surface of the floating body O1, and the transmitted wave 05 is attenuated due to energy consumption due to the up-and-down motion of the floating body, resulting in a wave-dissipating effect.
また、動揺制御型では、第3図に示すように、ご(短い
波は浮体の外壁で反射し、比較的短い波は鋼製の浮体0
1の内部における水の運動により、波による浮体01の
動揺を調節し、入射波04と浮体01が造る波の位相差
を利用して透過波05を抑え、長い波は浮体の上下揺れ
を利用して底部から流出入する水流のエネルギ損失で消
波するというものであり、上記ポンツーン型と同様、係
留ライン02を介して海底のアンカー03に係留されて
いる。In addition, in the oscillation control type, as shown in Figure 3, short waves are reflected by the outer wall of the floating body, and relatively short waves are reflected by the steel floating body.
The movement of water inside the floating body 01 adjusts the movement of the floating body 01 caused by waves, and the phase difference between the incident wave 04 and the wave created by the floating body 01 is used to suppress the transmitted wave 05, and long waves utilize the vertical shaking of the floating body. The waves are dissipated by the energy loss of the water flowing in and out from the bottom, and like the pontoon type, it is moored to an anchor 03 on the seabed via a mooring line 02.
しかしながら、この種の浮消波堤はいずれも係留ライン
によって海底のアンカーに弛緩係留されているので、係
留構造の裾は大きく拡がるから、水深が大きい場合、浮
体とアンカーの水平方向距離が非常に大きくなり、その
結果、下記のような問題がある。However, since all of these types of floating breakwaters are loosely moored to an anchor on the seabed by a mooring line, the skirt of the mooring structure widens greatly, so when the water depth is large, the horizontal distance between the floating body and the anchor becomes very large. As a result, the following problems arise.
(1) 係留ラインの物量が増大する。(1) The amount of mooring lines will increase.
(2)係留装置の占有海域が増大し、航行船舶等の自由
な航行に影響を及ぼす。(2) The sea area occupied by mooring devices will increase, affecting the free navigation of navigating vessels.
(3) 係留装置の裾が大きくなる関係上、静穏化す
べき海域に接近して設置できないことから、浮消波堤の
長さあるいは基数が増大する。(3) As the bottom of the mooring device becomes larger, it cannot be installed close to sea areas that should be kept calm, so the length or number of floating breakwaters increases.
本発明は、このような事情に鑑みて提案されたもので、
水深が大きい場合でも係留構造が大きくならず、付近を
航行する船舶への影響をな(する底コストの経済的な大
水深浮消波堤を提供することを目的とする。The present invention was proposed in view of these circumstances, and
The purpose of the present invention is to provide a deep-water floating breakwater that is economical in bottom cost and does not have a large mooring structure even when the water depth is large and does not affect ships sailing nearby.
そのために本発明は、海面に浮上し入射波の反射、造渦
、摩擦及び浮体の運動によって入射波のエネルギを消費
することにより透過波を減衰させる横長立方体状浮体と
、前記浮体の海水浸漬部の前後端に沿ってそれぞれ等間
隔で垂設された複数の鉛直吊下げラインにより海中に宙
吊りされ上記浮体とほぼ同−巾。To this end, the present invention provides an oblong cubic floating body that floats on the sea surface and attenuates transmitted waves by consuming the energy of the incident waves through reflection of the incident waves, vortex formation, friction, and movement of the floating body, and a seawater immersed portion of the floating body. It is suspended in the sea by a plurality of vertical suspension lines placed vertically at equal intervals along the front and rear ends of the floating body, and has approximately the same width as the floating body.
同一長さを有する水平重錘と、裾広状に海中に弛緩的に
張られ前記重錘を海底に沈設された複数のアンカーに撃
留する係留ラインとを具えたことを特徴とする。It is characterized by comprising a horizontal weight having the same length and a mooring line that is stretched loosely in the sea in a wide skirt shape and anchors the weight to a plurality of anchors sunk in the seabed.
このような構成によれば、係留装置の水平方向へのひろ
がりは、重錘とアンカーとの間に弛緩係留的に斜設され
た係留ラインの部分によるもののみであるから、水深の
影響を受けなくなるため、前述したような水深の増大に
伴う係留装置の裾広がりの問題を解決することができる
。According to such a configuration, the horizontal expansion of the mooring device is only due to the part of the mooring line that is installed diagonally between the weight and the anchor in a loose mooring manner, so it is not affected by the water depth. Therefore, it is possible to solve the above-mentioned problem of the bottom of the mooring device widening due to an increase in water depth.
本発明の一実施例を図面について説明すると、第1図は
その側面図である。An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view thereof.
上図において、01は長方形断面を有する横長直立方体
状のポンツーン型浮体であり、入射波04の一部を反射
して透過波05を減衰させる。浮体O1は、その前後端
に等間隔で垂下された複数のチェーンあるいはワイヤか
らなる鉛直吊下げライン06によって水平直方形状重錘
07を水中に吊下げており、重錘07は裾広に張られた
複数の係留ライン02によって海底に沈設された複数の
アンカー03に弛緩係留されている。In the above figure, 01 is a pontoon-type floating body in the shape of a horizontally elongated upright cube with a rectangular cross section, which reflects a part of the incident wave 04 and attenuates the transmitted wave 05. The floating body O1 has a horizontal rectangular weight 07 suspended in the water by a vertical suspension line 06 consisting of a plurality of chains or wires suspended at equal intervals from the front and rear ends of the floating body O1, and the weight 07 is stretched over a wide base. It is loosely moored to a plurality of anchors 03 sunk on the seabed by a plurality of mooring lines 02.
本実施例では浮体をポンツーン型としたが、従来、浮消
波堤を対象としたいかなる形状の浮体でも採用すること
ができる。ただし、重錘07の重量に見合った浮力を増
加させるような配慮が必要である。In this embodiment, the floating body is of a pontoon type, but any conventional floating body suitable for floating breakwaters may be employed. However, consideration must be given to increasing the buoyancy commensurate with the weight of the weight 07.
このような大水深浮消波堤によれば、従来の浮消波堤と
しての消波作用を行うとともに、水深の増大に対して、
浮消波堤と海底のアンカーの水平方向距離は増大しない
ので、下記の効果が奏せられる。Such a deep-water floating breakwater not only performs the wave-dissipating effect of a conventional floating breakwater, but also has the ability to withstand increases in water depth.
Since the horizontal distance between the floating wave bank and the anchor on the seabed does not increase, the following effects can be achieved.
Tl) 係留装置は、吊下げラインの長さを水深に応
じて長くするのみでよい。因に、従来方式の浮消波堤で
は係留ライン長さは水深の2〜3倍は必要である。Tl) For mooring devices, it is only necessary to increase the length of the hanging line according to the water depth. Incidentally, in conventional floating wave banks, the mooring line length needs to be two to three times the water depth.
(2)裾広に張られる係留ラインは海底近くに中吊りさ
れた重錘とアンカーとの間のみであるから、係留装置の
占有海域面積が増大しない。(2) Since the wide mooring line is stretched only between the weight suspended near the seabed and the anchor, the sea area occupied by the mooring device does not increase.
(3)従って、浮消波堤自体を静穏化対象海域に近接し
て設置することができる。(3) Therefore, the floating breakwater itself can be installed close to the sea area to be calmed.
(4)重錘自体をシンカーとして海底に沈設し、吊下げ
ラインをテンションレグとして強力な張力で浮体を引張
ることで係留ラインを省略することも一応考えられるが
、係留ラインを省略すると、浮体は上下方向には不動と
なるから、浮体の上下揺れを利用する消波作用も失われ
てしまうので、大水深浮消波堤としては綜合的にみて得
策でない。(4) It is possible to omit the mooring line by sinking the weight itself into the seabed as a sinker and using the suspension line as a tension leg to pull the floating body with strong tension, but if the mooring line is omitted, the floating body Since it does not move in the vertical direction, the wave-dissipating effect that utilizes the up-and-down motion of the floating body is also lost, so it is not a good idea from an overall perspective as a deep-water floating breakwater.
要するに本発明によれば、海面に浮上し入射波の反射、
造渦、摩擦及び浮体の運動によって入射波のエネルギを
消費することにより透過波を減衰させる横長立方体状浮
体と、前記浮体の海水浸漬部の前後端に沿ってそれぞれ
等間隔で垂設された複数の鉛直吊下げラインにより海中
に宙吊りされ上記浮体とほぼ同−中、同一長さを有する
水平重錘と、裾広状に海中に弛緩的に張られ前記重錘を
海底に沈設された複数のアンカーに撃留する係留ライン
とを具えたことにより、水深が大きい場合でも係留構造
が大きくならず、付近を航行する船舶への影響をなくす
る底コストの経済的な大水深浮消波堤を得るから、本発
明は産業上極めて有益なものである。In short, according to the present invention, floating on the sea surface and reflecting incident waves,
an oblong cubic floating body that attenuates transmitted waves by consuming the energy of incident waves through vortex formation, friction, and movement of the floating body; and a plurality of floating bodies vertically installed at equal intervals along the front and rear ends of the seawater immersed part of the floating body. A horizontal weight suspended in the sea by a vertical suspension line and having approximately the same length and length as the floating body; By equipping the anchor with a mooring line, the mooring structure does not become large even when the water depth is large, and it is an economical deep-water floating breakwater that eliminates the impact on ships navigating nearby. Therefore, the present invention is extremely useful industrially.
第1図は本発明の一実施例を示す全体側面図である。
第2図、第3図はそれぞれ公知の浮消波堤を示す側面図
である。
01・・・浮体、02・・・係留ライン、03・・・ア
ンカー、04・・・入射波、05・・・透過波、06・
・・吊下げライン、07・・・重錘。
代理人 弁理士 塚 本 正 文
第2図
第1図
第3図FIG. 1 is an overall side view showing one embodiment of the present invention. FIGS. 2 and 3 are side views showing known floating wave banks, respectively. 01... Floating body, 02... Mooring line, 03... Anchor, 04... Incident wave, 05... Transmitted wave, 06...
... Suspension line, 07... Weight. Agent Masa Tsukamoto, Patent Attorney Figure 2 Figure 1 Figure 3
Claims (1)
により透過波を減衰させる横長立方体状浮体と、前記浮
体の海水浸漬部の前後端に沿ってそれぞれ等間隔で垂設
された複数の鉛直吊下げラインにより海中に宙吊りされ
上記浮体とほぼ同一巾、同一長さを有する水平重錘と、
裾広状に海中に弛緩的に張られ前記重錘を海底に沈設さ
れた複数のアンカーに繋留する係留ラインとを具えたこ
とを特徴とする大水深浮消波堤。[Scope of Claims] An oblong cubic floating body that floats on the sea surface and attenuates transmitted waves by consuming the energy of incident waves through reflection of incident waves, vortex formation, friction, and movement of the floating body, and a seawater immersed portion of the floating body. a horizontal weight having approximately the same width and length as the floating body, suspended in the sea by a plurality of vertical suspension lines vertically installed at equal intervals along the front and rear ends of the floating body;
1. A deep-water floating breakwater comprising a mooring line loosely extended in the sea in a wide skirt shape and mooring the weight to a plurality of anchors sunk on the seabed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63290677A JP2554145B2 (en) | 1988-11-17 | 1988-11-17 | Deepwater Floating Breakwater |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63290677A JP2554145B2 (en) | 1988-11-17 | 1988-11-17 | Deepwater Floating Breakwater |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH02136413A true JPH02136413A (en) | 1990-05-25 |
JP2554145B2 JP2554145B2 (en) | 1996-11-13 |
Family
ID=17759063
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63290677A Expired - Fee Related JP2554145B2 (en) | 1988-11-17 | 1988-11-17 | Deepwater Floating Breakwater |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2554145B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5827011A (en) * | 1996-12-23 | 1998-10-27 | Kann; Dirk C. | Wave suppression system |
CN102852117A (en) * | 2011-06-29 | 2013-01-02 | 郑钢钢 | Floating dock capable of not changing length of vertical mooring line during change of sea level |
CN115214854A (en) * | 2022-07-28 | 2022-10-21 | 中国电建集团华东勘测设计研究院有限公司 | Floating plate array type photovoltaic wave absorption supporting structure and installation and construction method |
WO2023087916A1 (en) * | 2021-11-19 | 2023-05-25 | 江苏科技大学 | Floating-type wave dissipating apparatus and breakwater |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54115733U (en) * | 1978-02-03 | 1979-08-14 |
-
1988
- 1988-11-17 JP JP63290677A patent/JP2554145B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54115733U (en) * | 1978-02-03 | 1979-08-14 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5827011A (en) * | 1996-12-23 | 1998-10-27 | Kann; Dirk C. | Wave suppression system |
CN102852117A (en) * | 2011-06-29 | 2013-01-02 | 郑钢钢 | Floating dock capable of not changing length of vertical mooring line during change of sea level |
WO2023087916A1 (en) * | 2021-11-19 | 2023-05-25 | 江苏科技大学 | Floating-type wave dissipating apparatus and breakwater |
CN115214854A (en) * | 2022-07-28 | 2022-10-21 | 中国电建集团华东勘测设计研究院有限公司 | Floating plate array type photovoltaic wave absorption supporting structure and installation and construction method |
Also Published As
Publication number | Publication date |
---|---|
JP2554145B2 (en) | 1996-11-13 |
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