JP5351067B2 - Levitation breakwater - Google Patents

Levitation breakwater Download PDF

Info

Publication number
JP5351067B2
JP5351067B2 JP2010016774A JP2010016774A JP5351067B2 JP 5351067 B2 JP5351067 B2 JP 5351067B2 JP 2010016774 A JP2010016774 A JP 2010016774A JP 2010016774 A JP2010016774 A JP 2010016774A JP 5351067 B2 JP5351067 B2 JP 5351067B2
Authority
JP
Japan
Prior art keywords
rod
floating body
wave
breakwater
buoyancy
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
JP2010016774A
Other languages
Japanese (ja)
Other versions
JP2011153492A (en
Inventor
幸伸 織田
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.)
Taisei Corp
Original Assignee
Taisei Corp
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 Taisei Corp filed Critical Taisei Corp
Priority to JP2010016774A priority Critical patent/JP5351067B2/en
Publication of JP2011153492A publication Critical patent/JP2011153492A/en
Application granted granted Critical
Publication of JP5351067B2 publication Critical patent/JP5351067B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
    • Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters

Landscapes

  • Revetment (AREA)

Description

本発明は浮上式防波堤に関するものである。   The present invention relates to a floating breakwater.

津波などの来襲時に、陸地への侵入を阻止するための防波堤として各種の構造のものが提案されている。
例えば図７に示すようなフラップ式の防波堤が知られている。
これは一端を回転軸ｂに可能可能に支持した板体を海底に固定して防水板ａを構成したものである。
平穏時にはこれを海底に伏せておき、津波の来襲時にはこの防水板ａを押し上げたり浮力を与えて水中で起立させる。
あるいは図８に示すような、鉛直方向に二段式に鋼管を組み合わせた構造が知られている。
これは下段の鋼管ｃの内部に、摺動自在に上段の鋼管ｄを収納して短縮しておき、津波の来襲時に空気を供給して上段の鋼管ｄに浮力を与えて海面上に突出させる構造である。（引用文献１）
あるいは図９に示すような、海面に浮いている浮体ｅから幕ｆを垂らして海底に固定するとともに、浮体の沖側は係留索ｇによって海底に固定した構造も知られている。
これは平穏時には浮体ｅを沈降させておき、津波の来襲時にはこれを浮上させる構造である。（引用文献２） Various types of breakwaters have been proposed as a breakwater to prevent entry into the land during a tsunami.
For example, a flap breakwater as shown in FIG. 7 is known.
In this structure, a waterproof plate a is configured by fixing a plate body, one end of which is supported by the rotating shaft b, to the seabed.
When the tsunami hits, the water-proof board a is pushed up or given buoyancy to stand up in the water.
Alternatively, a structure in which steel pipes are combined in a two-stage manner in the vertical direction as shown in FIG. 8 is known.
This is because the upper steel pipe d is slidably accommodated in the lower steel pipe c and shortened, and air is supplied when the tsunami strikes to give buoyancy to the upper steel pipe d so that it protrudes above the sea surface. Structure. (Cited document 1)
Alternatively, as shown in FIG. 9, a structure is known in which a curtain f is suspended from a floating body e floating on the sea surface and fixed to the sea floor, and the offshore side of the floating body is fixed to the sea floor by a mooring line g.
This is a structure in which the floating body e is allowed to sink during a calm period and floats during a tsunami. (Cited document 2)

特開２００６−３７４１５号公報。JP 2006-37415 A. 特開２００６−２４９９１４号公報。JP 2006-249914 A.

前記した従来の浮上式防波堤にあっては、次のような問題点がある。
＜１＞ 図７に示したような構成の防波堤では、フラップ式の板体を海岸線に沿って長距離にわたって設置するという大規模な設備となり、設置費用、メンテナンス費用が膨大なものとなる。
＜２＞ 図８に示したような構造の防波堤でも、やはり鋼管群を海岸線に沿って長距離にわたって設置するという大規模な設備となり、設置費が膨大なものとなる。さらに下部の鋼管を精度よく鉛直に海底に打設する必要があり、施工が容易ではない。また将来において下部鋼管の交換はほとんど不可能である。その上に鋼管群のメンテナンスに多大な労力と費用を要する。
＜３＞ 図９に示したような構造の防波堤では、浮体の沖側にも係留索の設置が必要であり、広い占有面積が必要となる。またこの構造は沖から来襲する押し波に対しては機能を発揮するが、引き波に対しては防波堤としての機能を発揮できない。したがって引き波によって岸側の水位が低下した場合に、次に来る押し波時に水位差が増大してより大きな力が装置に作用するという問題がある。また、幕体と沖側の係留索の張力がともに浮体に対して下向き成分の力として作用するため、大きな浮力を必要とする。 The above-described conventional floating breakwater has the following problems.
<1> The breakwater having the configuration shown in FIG. 7 is a large-scale facility in which a flap-type plate body is installed over a long distance along the coastline, and installation costs and maintenance costs become enormous.
<2> Even a breakwater having a structure as shown in FIG. 8 is a large-scale facility in which a steel pipe group is installed over a long distance along the coastline, resulting in a huge installation cost. Furthermore, it is necessary to place the lower steel pipe vertically and accurately on the sea floor, and the construction is not easy. In the future, it is almost impossible to replace the lower steel pipe. In addition, a great amount of labor and cost are required for maintenance of the steel pipe group.
<3> In the breakwater having a structure as shown in FIG. 9, it is necessary to install a mooring line on the offshore side of the floating body, and a large occupied area is required. In addition, this structure can function for push waves coming from offshore, but cannot function as a breakwater for pulling waves. Therefore, when the water level on the shore side is lowered due to the pulling wave, there is a problem that the water level difference increases at the next pushing wave and a larger force acts on the apparatus. Moreover, since the tension of the curtain and the mooring line on the offshore side acts as a downward component force on the floating body, a large buoyancy is required.

かかる課題は、本発明によれば、ほぼ平行に配置した少なくとも２本の棒状浮体と、前記少なくとも２本の棒状浮体の間に配置された防波板と、前記防波板の下面に一端部が取り付られた幕体と、前記幕体の下端部が取り付けられたアンカーとを備えたことを特徴とする浮上式防波堤によって解決される。
 Such object is achieved according to the present invention, at least two rod-shaped floating body is arranged substantially parallel, wherein the anti-wave plate disposed between the at least two rod-shaped floating one end on the lower surface of the anti-wave plate This is solved by a levitated breakwater characterized by comprising a curtain body attached with a anchor and an anchor to which the lower end of the curtain body is attached .

本発明の浮上式防波堤は以上説明したようになるから次のような効果のいずれかを得ることができる。
＜１＞ 平穏時は海底に沈めてあり、必要な時に浮上させて津波の侵入に抵抗する構造である。そのために平穏時に船舶の交通の障害とならず、必要なときだけに津波の侵入への抵抗体として作用させることができる。
＜２＞ 海面に配置した場合に、沖側と岸側とが対称構造である。そのために津波の押し波にも、引き波にも同等の抵抗を与えることができる。
＜３＞ 防波板に作用する波力は上向き成分となるため、棒状浮体は回転モーメントに抵抗する浮力だけを有すればよく、大きな浮力を備えておく必要がない。
＜４＞ さらに防波板の棒状浮体間の長さを長くすることで、棒状浮体をより小さく構成することが可能となる。
＜５＞ 構成する材料が市販の安価なものを使用できるから、海岸線に沿った長い延長に配置しても経済的に提供することができる。
＜６＞ 浮力を利用するだけで、その他の機械的な部材をほとんど必要としないから、メンテナンス費用も安価である。
＜７＞ 構造が簡易であるから、短期間に安価に設置することができる。 Since the levitated breakwater according to the present invention is as described above, one of the following effects can be obtained.
<1> The structure is submerged on the sea floor during calm periods, and is surfaced when necessary to resist tsunami invasion. Therefore, it does not become a hindrance to ship traffic during calm, and can act as a resistance to tsunami invasion only when necessary.
<2> When placed on the sea surface, the offshore side and the shore side are symmetrical. Therefore, the same resistance can be given to the tsunami pushing wave and the pulling wave.
<3> Since the wave force acting on the wave preventing plate is an upward component, the rod-like floating body need only have buoyancy that resists the rotational moment, and does not need to have a large buoyancy.
<4> Further, by increasing the length between the rod-like floating bodies of the wave preventing plate, the rod-like floating body can be made smaller.
<5> Since a commercially available inexpensive material can be used, it can be economically provided even if it is arranged in a long extension along the coastline.
<6> Since only buoyancy is used and no other mechanical members are required, the maintenance cost is also low.
<7> Since the structure is simple, it can be installed inexpensively in a short time.

本発明の浮上式防波堤の一部を切断した状態の説明図。Explanatory drawing of the state which cut a part of floating type breakwater of the present invention. 津波が来襲した場合の機能の説明図。Explanatory diagram of functions when a tsunami hits. 浮上式防波堤を沈下させて状態の説明図。Explanatory drawing of a state by sinking a floating breakwater. 給気手段の２の実施例の説明図。Explanatory drawing of 2 Example of an air supply means. 棒状浮体とアンカーを固定するタイプの浮上式防波堤の実施例の説明図。Explanatory drawing of the Example of the floating type breakwater of the type which fixes a rod-shaped floating body and an anchor. 棒状浮体が単体出会った場合の比較例の説明図。Explanatory drawing of the comparative example when a rod-shaped floating body encounters alone. 従来のフラップ式の防波堤の説明図。Explanatory drawing of the conventional flap type breakwater. 引用文献１の防波堤の説明図。Explanatory drawing of the breakwater of the cited reference 1. FIG. 引用文献２の防波堤の説明図。Explanatory drawing of the breakwater of the cited reference 2. FIG.

以下図面を参照にしながら本発明の好適な実施の形態を詳細に説明する。   DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

＜１＞全体の構成。
本発明の浮上式防波堤は、棒状浮体１と防波板２と幕体３という、簡易な部材の組み合わせによって構成する。
また、これらの部材は陸上で組み立てて現地に運搬して設置することができるから、安価で短期間に設置を完了することができる。
簡易な部材の組み合わせであるという理由で、装置の部材の交換も比較的簡単に行うことができ、メンテナンスも容易である。 <1> Overall configuration.
The levitated breakwater according to the present invention is constituted by a combination of simple members such as a rod-like floating body 1, a wave-breaking plate 2, and a curtain body 3.
Moreover, since these members can be assembled on the land, transported to the site, and installed, the installation can be completed in a short time at a low cost.
Because of the simple combination of members, the members of the apparatus can be replaced relatively easily and maintenance is easy.

＜２＞棒状浮体。
棒状浮体１は両端を密閉した円柱状の容器である。
その内部に空気を供給することで浮力を得ることができる。
内部への空気の供給手段、供給時期は後述する。 <2> A rod-shaped floating body.
The rod-shaped floating body 1 is a cylindrical container with both ends sealed.
Buoyancy can be obtained by supplying air into the interior.
The means for supplying air to the inside and the supply timing will be described later.

＜３＞防波板。
防波板２は、前記の棒状浮体１に取り付ける、板状の部材である。
この防波板２は、シートのような可撓性の材料ではなく、波力によっては簡単に変形しない程度の剛性を備えており、それ自体に浮力を備えている必要はないが、軽量であることが望ましい。
この防波板２を、ほぼ平行に配置した２本の棒状浮体１の間に取り付けて設置する。
あるいは２本に限らず中間に配置した複数本の棒状浮体１の間に防波板２を設置することもできる。 <3> Wave barrier plate.
The wave preventing plate 2 is a plate-like member attached to the rod-like floating body 1.
The wave-breaking plate 2 is not a flexible material such as a sheet, and has a rigidity that is not easily deformed by wave force, and does not need to have buoyancy in itself, but is lightweight. It is desirable to be.
The wave preventing plate 2 is attached and installed between two rod-like floating bodies 1 arranged almost in parallel.
Alternatively, the wave preventing plate 2 can be installed between a plurality of rod-like floating bodies 1 arranged in the middle without being limited to two.

＜４＞幕体。
防波板２の下面には、幕体３の一端を取り付ける。
この幕体３はシートのような可撓性の材料で構成し、カーテンの上端を取り付けるような状態で、防波板２の下面に取り付ける。
幕体３の一端を取り付ける方向は、棒状浮体１の方向と平行する方向である。
この幕体３の他の一端、カーテンの裾に当たる端は、後述するように海底に設置したアンカー４に取り付けが可能である。
そのために、たとえばアンカー４側のフックを係合する係合穴を開口するなどの構成を採用する。 <4> Curtain.
One end of the curtain body 3 is attached to the lower surface of the wave preventing plate 2.
The curtain body 3 is made of a flexible material such as a sheet, and is attached to the lower surface of the wave preventing plate 2 with the upper end of the curtain attached.
The direction in which one end of the curtain body 3 is attached is a direction parallel to the direction of the rod-like floating body 1.
The other end of the curtain 3 and the end corresponding to the bottom of the curtain can be attached to an anchor 4 installed on the sea floor as will be described later.
For this purpose, for example, a configuration is employed in which an engagement hole for engaging a hook on the anchor 4 side is opened.

＜５＞給気手段の１。（図２）
棒状浮体１に浮力を与えるためにいくつかの手段を採用することができる。
例えば、棒状浮体１に圧縮空気を供給する給気管５の一端を接続する。
この給気管５は、海底を通して他端を陸上の給気装置６に接続する。
そして平穏時には棒状浮体１は内部の気体は抜いた状態として海底に沈下ささせておく。
このように構成すると、平穏時には海底に沈下している棒状浮体１に対して、陸上の給気装置６を始動した場合にのみ、浮力を与えることができる。
給気管５は、幕体３に沿わせて設置すると、流れの抵抗を受けないが、幕体３とは別に独立して配管をすることもできる。 <5> One of the air supply means. (Figure 2)
In order to give buoyancy to the rod-shaped floating body 1, several means can be adopted.
For example, one end of an air supply pipe 5 that supplies compressed air to the rod-like floating body 1 is connected.
The other end of the air supply pipe 5 is connected to a ground air supply device 6 through the seabed.
And at the time of calm, the rod-shaped floating body 1 is made to sink to the seabed as the state which the inside gas was extracted.
If comprised in this way, a buoyancy can be given only with respect to the rod-shaped floating body 1 which is sinking to the seabed at the time of calm, when the on-air supply apparatus 6 is started.
If the air supply pipe 5 is installed along the curtain body 3, it does not receive flow resistance, but it can be piped independently of the curtain body 3.

＜６＞給気手段の２（図４）
あるいは棒状浮体１自体に、空気を圧縮したボンベなどの圧縮空気の供給装置を取り付けておくこともできる。
平穏時には棒状浮体１の空気を抜いて、海底に沈下させておく。
必要な時にはこの供給装置に、陸上、船上などから有線、無線で信号を送って棒状浮体１の内部に圧縮空気を供給し、棒状浮体１を含んだ浮上式防波堤を海面に浮上させる。 <6> Air supply means 2 (FIG. 4)
Or the supply apparatus of compressed air, such as the cylinder which compressed air, can also be attached to rod-shaped floating body 1 itself.
When it is calm, the rod-like floating body 1 is evacuated and allowed to sink to the seabed.
When necessary, a signal is sent to the supply device by wire or wirelessly from the land, on the ship or the like to supply compressed air to the inside of the rod-like floating body 1, and the floating breakwater including the rod-like floating body 1 is floated on the sea surface.

＜７＞事前に浮力を与える構成（図５）
あるいは棒状浮体１には常に空気を注入しておき、あるいは発泡材料のような浮力を有する材料で構成しておくこともできる。
その場合には平穏時に浮上式防波堤が浮き上がらないように、棒状浮体１または防波板２の下面には、海底のアンカー４への固定装置７を設けておく。
必要な時には陸上、船上などから有線、無線で信号を送って固定装置７を解除して、事前に与えた浮力によって、棒状浮体１を含めた浮上式防波堤を海面に浮上させる。 <7> Configuration to give buoyancy in advance (Fig. 5)
Alternatively, the rod-like floating body 1 can be always infused with air, or can be made of a material having buoyancy such as a foam material.
In that case, a fixing device 7 to the anchor 4 on the seabed is provided on the lower surface of the rod-like floating body 1 or the wave breaker 2 so that the floating breakwater does not rise during the calm.
When necessary, a signal is transmitted by wire or wireless from land, ship, etc., and the fixing device 7 is released, and the levitated breakwater including the rod-like floating body 1 is levitated to the sea surface by buoyancy given in advance.

＜８＞浮上式防波堤の設置。
上記の構成の浮上式防波堤を海上に設置する場合に、まず海底にアンカー４を設置する。
このアンカー４は、重量のあるブロックや、掘削してコンクリートを打設した構造物であり、海底に点状、線状に配置する。
そして、このアンカー４に、前記した幕体３の下端を取り付ける。
棒状浮体１に浮力を与えていない構成では、棒状浮体１、防波板２、幕体３ともに海底に沈下した状態で位置する。
棒状浮体１に事前に浮力を与えておく構成では、平穏時に浮上式防波堤が浮き上がらないように、棒状浮体１または防波板２の下面に設置した取り付け具を利用して海底のアンカー４へ取り付けておく。 <8> Installation of a floating breakwater.
When the floating breakwater having the above configuration is installed on the sea, the anchor 4 is first installed on the seabed.
The anchor 4 is a heavy block or a structure in which concrete is excavated and placed, and is arranged in the form of dots or lines on the sea floor.
Then, the lower end of the curtain 3 is attached to the anchor 4.
In the configuration in which buoyancy is not given to the rod-shaped floating body 1, the rod-shaped floating body 1, the wave preventing plate 2, and the curtain 3 are all located in a state where they are submerged on the seabed.
In the configuration in which buoyancy is given to the rod-shaped floating body 1 in advance, it is attached to the anchor 4 on the sea floor using a mounting tool installed on the bottom surface of the rod-shaped floating body 1 or the wave-breaking plate 2 so that the floating breakwater will not rise during the calm time. Keep it.

＜９＞津波の来襲時。
津波の警報が出たら、陸上の給気装置６からの圧縮空気を、給気管５を通して棒状浮体１内に圧縮空気を供給して浮力を発生させる。
あるいは棒状浮体１自体に、取り付けた圧縮空気の供給装置を、有線、無線を介した信号によって開放して棒状浮体１の内部に圧縮空気を供給して浮力を発生させる。
棒状浮体１に浮力を与えてある構成の場合には、無線、有線を介して信号を送り、アンカー４との係合を解除する。
こうして平行する棒状浮体１と、その間に設置した防波板２が水面に浮上すると、防波板２の下に取り付けた幕体３は、水中で鉛直方向に展開する。 <9> During the tsunami attack.
When a tsunami warning is issued, compressed air from the air supply device 6 on the land is supplied into the rod-like floating body 1 through the air supply pipe 5 to generate buoyancy.
Alternatively, a compressed air supply device attached to the rod-shaped floating body 1 itself is opened by a signal via wire or wireless to supply compressed air to the inside of the rod-shaped floating body 1 to generate buoyancy.
In the case of a configuration in which buoyancy is applied to the rod-like floating body 1, a signal is sent via wireless or wired connection to release the engagement with the anchor 4.
When the parallel rod-like floating bodies 1 and the wave-breaking plate 2 installed therebetween float on the water surface, the curtain body 3 attached under the wave-breaking plate 2 develops in the vertical direction in water.

＜１０＞棒状浮体の作動。
平行して配置した棒状浮体１の作動を図２で説明する。
津波によって図で左側の水位が上昇すると、防波板２には水圧によって時計まわりに回転するモーメントが作用する。
一方、右側の棒状浮体１は左側の棒状浮体１より沈み込む。
すると、右側の棒状浮体１の浮力で、防波板２には反時計まわりのモーメントが作用する。
したがって防波板２はそのモーメントが釣り合う回転角まで傾く。
浮力による反時計回りのモーメントは、棒状浮体１の浮力を大きくすることや、防波板２の幅を長くすることによって、より大きく設定することが可能である。
そのために、予想する津波に応じて防波板２の幅や、棒状浮体１の浮力を設定して最適な構成を採用することができる。 <10> Actuation of the rod-shaped floating body.
The operation of the rod-like floating bodies 1 arranged in parallel will be described with reference to FIG.
When the water level on the left side of the figure rises due to the tsunami, a moment that rotates clockwise by the water pressure acts on the wave preventing plate 2.
On the other hand, the rod-like floating body 1 on the right side sinks from the rod-like floating body 1 on the left side.
Then, a counterclockwise moment acts on the wave preventing plate 2 due to the buoyancy of the rod-like floating body 1 on the right side.
Therefore, the wave preventing plate 2 is tilted to a rotation angle at which the moment is balanced.
The counterclockwise moment due to the buoyancy can be set larger by increasing the buoyancy of the rod-shaped floating body 1 or by increasing the width of the wave preventing plate 2.
Therefore, the optimum configuration can be adopted by setting the width of the wave preventing plate 2 and the buoyancy of the rod-like floating body 1 according to the expected tsunami.

＜１１＞防波板の機能。
本発明の防波板２の機能の説明のために、まず図６に示すような１本だけの単体棒状浮体１ａで幕体３ａを支持した場合の機能、作動を説明する。
図６の単体棒状浮体１ａに浮力が生じているためには、単体棒状浮体１ａの低水位側の水位も単体棒状浮体１ａが水没する水位でなければならない。
したがって図６の左図のように、高水位側の水位が単体棒状浮体１ａの天端面より低い場合には津波の侵入を防ぐことができるが、しかし図６の右図のように水位差がこれを超えると単体棒状浮体１ａの上を越えて水が岸側に侵入することになる。
そのような津波の単体棒状浮体１ａの乗り越えを阻止するためには、単体棒状浮体１ａの高さを、想定される津波の数倍の高さにしなければならず、きわめて不経済なものとなる。
それに対して本発明の浮上式防波堤は、二本の棒状浮体１の間に構成を備えた防波板２を設置してあるから、低水位側の棒状浮体１も、高水位側の棒状浮体１も、それぞれ必要な浮力となる水深で釣り合う。
その結果、大きな水位差の津波に対しても十分に期待した機能を発揮することができる。 <11> Function of wave barrier.
In order to explain the function of the wave preventing plate 2 of the present invention, first, the function and operation when the curtain body 3a is supported by only one single bar-like floating body 1a as shown in FIG. 6 will be described.
In order for buoyancy to occur in the single rod-shaped floating body 1a of FIG. 6, the water level on the low water level side of the single rod-shaped floating body 1a must also be a water level at which the single rod-shaped floating body 1a is submerged.
Therefore, as shown in the left figure of FIG. 6, the tsunami can be prevented from entering when the water level on the high water level is lower than the top end face of the single rod-shaped floating body 1a. However, as shown in the right figure of FIG. If it exceeds this, water will invade the shore side over the single rod-shaped floating body 1a.
In order to prevent such a tsunami from climbing over the single rod-shaped floating body 1a, the height of the single rod-shaped floating body 1a must be several times as high as the expected tsunami, which is extremely uneconomical. .
On the other hand, the levitated breakwater of the present invention is provided with a wave breaker plate 2 having a configuration between two rod-like floating bodies 1, so that the low-water-side rod-like floating body 1 is also a high-water-level rod-like floating body. Each 1 is also balanced at the required water depth.
As a result, it is possible to exhibit the functions expected sufficiently even for a tsunami with a large water level difference.

１：棒状浮体
２：防波板
３：幕体
４：アンカー
５：給気管
６：給気装置
７：固定装置 1: Rod-shaped floating body 2: Wave barrier plate 3: Screen body 4: Anchor 5: Air supply pipe 6: Air supply device 7: Fixing device

Claims (2)

ほぼ平行に配置した少なくとも２本の棒状浮体と、
前記少なくとも２本の棒状浮体の間に配置された防波板と、
前記防波板の下面に一端部を取り付けた幕体と、
前記幕体の下端部が取り付けられたアンカーと
を備えたことを特徴とする浮上式防波堤。 At least two rod-like floating bodies arranged substantially in parallel;
And anti-wave plate disposed between the at least two rod-shaped floating body,
A curtain fitted with one end to the lower surface of the anti-wave plate,
An anchor to which the lower end of the curtain is attached;
Levitation type breakwater characterized by having . 津波による水位上昇に起因する水圧によって前記防波板に作用するモーメントと釣り合うモーメントが大きくなるように、予想する津波に応じて前記防波板の幅が設定されるように構成されたことを特徴とする請求項１に記載の浮上式防波堤。 The width of the wave-breaking plate is set in accordance with the expected tsunami so that the moment that balances the moment acting on the wave-breaking plate is increased by the water pressure caused by the water level rise caused by the tsunami. The levitated breakwater according to claim 1 .
JP2010016774A 2010-01-28 2010-01-28 Levitation breakwater Expired - Fee Related JP5351067B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2010016774A JP5351067B2 (en) 2010-01-28 2010-01-28 Levitation breakwater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2010016774A JP5351067B2 (en) 2010-01-28 2010-01-28 Levitation breakwater

Publications (2)

Publication Number Publication Date
JP2011153492A JP2011153492A (en) 2011-08-11
JP5351067B2 true JP5351067B2 (en) 2013-11-27

Family

ID=44539645

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2010016774A Expired - Fee Related JP5351067B2 (en) 2010-01-28 2010-01-28 Levitation breakwater

Country Status (1)

Country Link
JP (1) JP5351067B2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102995603B (en) * 2012-12-25 2014-12-24 华南师范大学 Wave elimination facility
JP2015068163A (en) * 2013-09-30 2015-04-13 喜裕 平尾 Method for reducing damage caused by major earthquake
JP5610366B1 (en) * 2014-03-27 2014-10-22 岡本 應守 Unit type seawall
CN106836117B (en) * 2017-02-24 2022-05-31 水利部交通运输部国家能源局南京水利科学研究院 Porous floating breakwater
CN111021306A (en) * 2019-12-23 2020-04-17 广东联塑科技实业有限公司 Marine aquaculture leisure breakwater for fishery
CN111058418A (en) * 2020-01-09 2020-04-24 滁州欣皓工程技术有限公司 Combined air bag floating breakwater and construction method thereof
CN115679888A (en) * 2022-10-26 2023-02-03 重庆交通大学 Flow separation dike suitable for tidal river reach branch ship lock

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS463723Y1 (en) * 1969-02-14 1971-02-08
JPS5421865Y2 (en) * 1972-09-30 1979-08-02
JPS52117833U (en) * 1976-03-05 1977-09-07
JPS62114924U (en) * 1986-01-09 1987-07-22
JPH0730536B2 (en) * 1988-10-31 1995-04-05 株式会社イズミ Wave breaking fence
JPH02204515A (en) * 1989-02-03 1990-08-14 Taisei Corp Movable type cam plate wave-breaker
US5304005A (en) * 1992-11-25 1994-04-19 Loeffler Lenz Federico Floating dynamic breakwater
JP2003342935A (en) * 2002-05-28 2003-12-03 Nishimatsu Constr Co Ltd Floating wave-absorbing bank
JP4305872B2 (en) * 2005-02-09 2009-07-29 尾崎 憲正 Tsunami breakwater
JP5070362B1 (en) * 2012-05-02 2012-11-14 株式会社落雷抑制システムズ Floating structure

Also Published As

Publication number Publication date
JP2011153492A (en) 2011-08-11

Similar Documents

Publication Publication Date Title
JP5351067B2 (en) Levitation breakwater
AU2018371270A1 (en) Self-aligning to wind facing floating platform supporting multi-wind turbines and solar for wind and solar power generation and the construction method thereon
KR101192659B1 (en) floating support structure for an offshore wind turbine
BR112016027775B1 (en) FLOATING STRUCTURE AND INSTALLATION PROCEDURE OF A FLOATING STRUCTURE
CN110382344A (en) The gravity substrate that can be floated for the autonomous type being connect with the offshore installations that can be floated
KR20160037693A (en) Floating transfer ocean structure and construction method thereof
JP6492340B2 (en) Emergency protective device
CN102383399A (en) Elevated dragging energy eliminating type ship blocking system
KR101554872B1 (en) floating breakwater
JP5024943B2 (en) Bottom structure of undulating gate type breakwater
US9903080B2 (en) Modular wave-break and bulkhead system
JP3170990U (en) Breakwater for overturning drag
CN105480386B (en) Overwater operation platform
JP2016084660A (en) Foundation structure of off-shore wind turbine generator
CN106638651A (en) Sea fan buoyant foundation integral installing technology
JP3175720U (en) Floating block for wave protection
JP4305872B2 (en) Tsunami breakwater
US20130074758A1 (en) Anchoring apparatus for wave energy converters
JP2006249914A5 (en)
JP2017160701A (en) Installation method to water bottom of gravitational structure
JP2009228268A (en) Leg type offshore breakwater
US9382681B2 (en) Modular wave-break and bulkhead system
KR20080105564A (en) Pile foundation system for marine structure using buoyancy
CN203473217U (en) Supporting rod of offshore platform positioning column
KR20110031403A (en) Power generation apparatus from inertial force of the wave by water pumping

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20120313

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20130306

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20130319

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20130520

RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20130520

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20130521

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: 20130820

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20130822

R150 Certificate of patent or registration of utility model

Ref document number: 5351067

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

LAPS Cancellation because of no payment of annual fees