JPH06158571A - Mooring rope for buoy - Google Patents
Mooring rope for buoyInfo
- Publication number
- JPH06158571A JPH06158571A JP4335340A JP33534092A JPH06158571A JP H06158571 A JPH06158571 A JP H06158571A JP 4335340 A JP4335340 A JP 4335340A JP 33534092 A JP33534092 A JP 33534092A JP H06158571 A JPH06158571 A JP H06158571A
- Authority
- JP
- Japan
- Prior art keywords
- buoy
- mooring
- rope
- chain
- frp rod
- 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.)
- Pending
Links
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
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
Landscapes
- Artificial Fish Reefs (AREA)
- Ropes Or Cables (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はブイ、浮魚礁等の海上又
は海中の浮体係留するロープに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rope for mooring floating bodies on or under the sea such as buoys and floating reefs.
【０００２】[0002]
【従来の技術】従来例としては実開昭６２−１６０８４
８号公報、実開昭６３−０７８５７４号、実開昭６３−
１７４６６５号公報に示されるものがあり、これらの何
れも浮魚礁であり、海底に沈めたアンカーにロープでも
って係留されている。図１は本発明を示すが、図１を借
りて従来例を説明すると、海面Ｓ上に浮上している表層
ブイ１にはチェーン２、スイベル３、ロープ４、スイベ
ル３′、チェーン２′が連結され、チェーン２′は海底
に沈められているアンカー５に連結されている。このよ
うなロープ４は従来、合成繊維ロープ例えばポリエステ
ル繊維を撚糸としたロープが用いられている。2. Description of the Related Art As a conventional example, a full-fledged SHO 62-16084
No. 8, Gazette No. 63-078574, Gazette 63-
There is one disclosed in Japanese Patent No. 174665, all of which are floating reefs and moored by ropes to anchors sunk on the sea floor. FIG. 1 shows the present invention. Explaining the conventional example with reference to FIG. 1, the surface layer buoy 1 floating above the sea surface S includes a chain 2, a swivel 3, a rope 4, a swivel 3 ', and a chain 2'. Connected, the chain 2'is connected to an anchor 5 submerged in the seabed. As such a rope 4, conventionally, a synthetic fiber rope, for example, a rope in which a polyester fiber is twisted is used.
【０００３】[0003]
【発明が解決しようとする課題】係留システムでは、ブ
イ自身が受ける潮流、風などの抵抗の他、ロープ等の係
留部材が受ける潮流抵抗によっても係留張力が発生す
る。従来の合成繊維ロープを使用した係留装置では、直
径の太いロープが必要となるため、相乗して潮流抵抗に
よる張力が増大してこの張力により係留システムの強
度、ブイの予備浮力、アンカー把駐力等に対する要求が
過大なものとなっている。In the mooring system, mooring tension is generated not only by the resistance of tidal current and wind received by the buoy itself but also by the tidal current resistance of the mooring members such as ropes. A mooring device using a conventional synthetic fiber rope requires a rope with a large diameter, which synergistically increases the tension due to the tidal current resistance, and this tension increases the strength of the mooring system, the preliminary buoyancy of the buoy, and the anchor holding force. The demands for etc. have become excessive.
【０００４】本発明は、細くて高強度な係留素材を適用
し、係留装置の潮流抵抗を小さく抑えることにより、係
留張力を軽減し、浮体、アンカーを含めた装置全体を小
型化し、全体的なコストも低減することのできる浮体の
係留ロープを提供することを目的とする。The present invention applies a thin and high-strength mooring material and suppresses the tidal current resistance of the mooring device, thereby reducing the mooring tension, downsizing the entire device including the floating body and the anchor, and overall It is an object of the present invention to provide a mooring rope for a floating body that can reduce costs.
【０００５】[0005]
【課題を解決するための手段】本発明の第１の発明は海
底上に沈めたアンカーに海上又は海中に浮遊するブイ、
浮魚礁を係留するための海上又は海中浮遊物の係留ロー
プにおいて、前記ロープは一方向ガラス繊維を樹脂でロ
ッド状に成形したＦＲＰロッドであることを特徴とする
浮体の係留ロープである。A first invention of the present invention is a buoy floating on the sea or in the sea on an anchor sunk on the seabed.
A mooring rope for mooring floating or reefs for mooring a floating reef, wherein the rope is a FRP rod formed by molding unidirectional glass fiber into a rod shape, which is a floating mooring rope.
【０００６】本発明の第２の発明はＦＲＰロッドは直径
約０．０１ｍｍのガラス繊維を約８０００本／ｍｍ2 の
密度で束にしてガラスの重量含有率約７５％となるよう
にエポキシ樹脂で結合固化してロッド状としたことを特
徴とする第１の発明に記載の浮体の係留ロープである。A second invention of the present invention is that the FRP rod is made of epoxy resin so that glass fibers having a diameter of about 0.01 mm are bundled at a density of about 8000 fibers / mm 2 and the weight content of glass is about 75%. It is a mooring rope for a floating body according to the first invention, characterized in that it is solidified into a rod shape.
【０００７】[0007]
【実施例】以下、本発明の実施例を図面を用いて説明す
る。Embodiments of the present invention will be described below with reference to the drawings.
【０００８】図１に示すように海面Ｓに浮上しているブ
イ１の船底にはチェーンの上端が係止されている。チェ
ーン２は海上Ｓ下の波浪による大きい荷重のかかる範囲
に配設され、通常鋼製である。チェーン２の下端はスイ
ベル３を介してロープ４（以下ＦＲＰロッドとも称す
る）の上端が連結され、ロープ４の下端は海底Ｂ近くま
でのび、チェーン２′の一端にスイベル３′を介して連
結され、チェーン２′の他端は海底に沈駐したアンカー
５に連結されている。チェーン２′は海底Ｂと摺擦する
ので鋼製とし、ロープ４下端が海底と摺擦しないように
してある。As shown in FIG. 1, the upper end of the chain is locked to the bottom of the buoy 1 floating on the sea surface S. The chain 2 is arranged in a range where a large load is applied by waves under the sea S and is usually made of steel. The lower end of the chain 2 is connected to the upper end of a rope 4 (hereinafter also referred to as an FRP rod) via a swivel 3, and the lower end of the rope 4 extends to near the seabed B and is connected to one end of a chain 2'via a swivel 3 '. , The other end of the chain 2'is connected to an anchor 5 sunk on the seabed. The chain 2'is made of steel because it rubs against the seabed B, so that the lower end of the rope 4 does not rub against the seabed.
【０００９】本発明においては上記のロープ４はＦＲＰ
ロッドであり、ロッド４は直径約０．０１ｍｍのガラス
繊維を約８０００本／ｍｍ2 の密度で束にしてガラスの
重量含有率約７５％となるようにエポキシ樹脂で結合固
化してロッド状としてある。In the present invention, the rope 4 is the FRP.
The rod 4 is a rod formed by bundling glass fibers having a diameter of about 0.01 mm at a density of about 8000 fibers / mm 2 and binding and solidifying with an epoxy resin so that the weight content of glass is about 75%. is there.
【００１０】ＦＲＰロッド４は、一方向ガラス繊維を樹
脂でロッド状に成形したもので、以下の特性を有する。The FRP rod 4 is formed by molding unidirectional glass fiber into a rod shape with resin and has the following characteristics.
【００１１】 (1) 引張強度 ： １６０kgf ／ｍｍ2 以上 (2) 曲げ強度 ： １６０kgf ／ｍｍ2 以上 (3) 弾性率 ： ５０００〜７０００kgf ／ｍｍ
2 (4) 比重 ： 約２．０ 上記性能を有するＦＲＰロッド４による係留装置の有効
性を検討するため、従来の合繊ロープによる係留装置と
同一条件のもとで静的釣合計算により比較すると以下の
とおりである。(1) Tensile strength: 160 kgf / mm 2 or more (2) Bending strength: 160 kgf / mm 2 or more (3) Elastic modulus: 5000-7000 kgf / mm
2 (4) Specific gravity: Approximately 2.0 In order to examine the effectiveness of the mooring device using the FRP rod 4 having the above performance, a static balance calculation is performed under the same conditions as the mooring device using the conventional synthetic fiber rope. It is as follows.
【００１２】計算条件は (1) 海域 水深 ： ２０００ｍ 表層潮流 ： ６ｋｔ（水深方向には水深６００ｍで潮
流０となるような直線分布とする） 風速 ： ２０ｍ／ｓ （潮流と同一方向とする） (2) ブイ１（小型定置ブイ） 排水量 ： ８０００kg（係留張力による排水量増加
を除く） 風圧抵抗 ： １００kgf （風速２０ｍ／ｓに対して） 潮流抵抗／排水量比：Ｒ／Ｗ＝０．０８（潮流６ｋｔに
対して） (3) 係留装置 チェーン２ スタッドチェーン 直径３０ｍｍ 長
さ１０ｍ ＦＲＰロッド４（または従来例のポリエステルロー
プ）の長さ ２０００ｍ チェーン２′スタッドチェーン 直径３０ｍｍ 長
さ１０００ｍ ただし、ＦＲＰロッド４および従来例のポリエステルロ
ープの直径はパラメータとした。またのチェーン２′
の長さは長めに取り、釣合状態において海底から離れて
いるチェーンの長さを評価の対象とした。計算方法はブ
イ１、チェーン２、ロープ４、チェーン２′に加わる潮
流抵抗により発生するロープ４張力とチェーン２、ロー
プ４、チェーン２′の重力により発生する張力の合力に
生ずるロープ４の張力を求めた。Calculation conditions are as follows: (1) Sea water depth: 2000 m Surface tide: 6 kt (in the depth direction, a straight line distribution is obtained so that the tide becomes 0 at a depth of 600 m) Wind speed: 20 m / s (in the same direction as the tide) ( 2) Buoy 1 (small stationary buoy) Drainage: 8000 kg (excluding drainage increase due to mooring tension) Wind pressure resistance: 100 kgf (for wind speed 20 m / s) Tide resistance / drainage ratio: R / W = 0.08 (tide 6 kt) (3) Mooring device Chain 2 Stud chain Diameter 30 mm Length 10 m FRP rod 4 (or polyester rope of the conventional example) 2000 m Chain 2'stud chain Diameter 30 mm Length 1000 m However, FRP rod 4 and conventional The diameter of the example polyester rope was used as a parameter. Another chain 2 '
The length of the chain was taken longer, and the length of the chain away from the seabed in the balanced state was the target of evaluation. The calculation method is to calculate the tension of the rope 4 which is the resultant of the tension of the rope 4 generated by the tidal current resistance applied to the buoy 1, the chain 2, the rope 4 and the chain 2'and the tension generated by the gravity of the chain 2, rope 4 and chain 2 '. I asked.
【００１３】計算結果は次の表１のとおりである。The calculation results are shown in Table 1 below.
【００１４】表１に示されているように、安全率（最大
張力／破断張力）を大略４として等しくすると、ＦＲＰ
ロッドを使用した方がポリエステルロープに対し、張力
を約１／２に抑えることができ、チェーンの長さ、アン
カー把駐力も少なくできることがわかる。 As shown in Table 1, when the safety factor (maximum tension / breaking tension) is set to be approximately 4, the FRP is equal.
It can be seen that the use of a rod can reduce the tension to about half that of the polyester rope, and the chain length and the anchor holding force can be reduced.
【００１５】上記表１でみると分るように同じ海域に同
じブイ１を同様に係留した場合、ロープ４の安全率を概
略同じとして従来例のポリエステルロープとＦＲＰロッ
ドを比較すると、直径４５ｍｍのポリエステルロープに
対して、直径１２ｍｍのＦＲＰロッドが安全率３．３２
と３．０９で概略同じであり、ブイ１の必要予備浮力は
直径４５ｍｍのポリエステルロープを用いると１１１９
８ｋｇｆ、直径１２ｍｍのＦＲＰロッドを用いると５８
８４ｋｇｆであり、ブイ１の予備浮力が本発明では著し
く小さくてすむ。チェーン２′の離底長さＬは直径１２
ｍｍのＦＲＰロッドを用いると２００ｍですみ、且つ張
力も小さくなるので海底のチェーン２′は小さくてす
む。もちろん張力が小さいためブイ１に連結したチェー
ン２も軽量となる。そしてアンカー５の把駐力を比較す
ると従来の直径４５ｍｍポリエステルロープであると５
９０２ｋｇｆであるのに対してＦＲＰロッドを用いると
２５９５ｋｇｆですむ。ケースＮＯ２，３についても同
様にＦＲＰロッドの方がポリエステルロープよりも最大
張力、ブイ１の必要予備浮力、チェーン２′の離底長
さ、アンカー把駐力が小さい。従って浮体の係留装置全
体が小さくてすむことが分る。As can be seen from Table 1 above, when the same buoy 1 is similarly moored in the same sea area, the safety factor of the rope 4 is approximately the same and the polyester rope of the conventional example and the FRP rod are compared, and the diameter of 45 mm The safety factor of the FRP rod with a diameter of 12 mm is 3.32 for polyester rope.
And 3.09, the required preliminary buoyancy of buoy 1 is 1119 when a 45 mm diameter polyester rope is used.
58 when using an FRP rod with 8 kgf and a diameter of 12 mm
Since it is 84 kgf, the preliminary buoyancy of the buoy 1 is extremely small in the present invention. The clearance length L of the chain 2'is 12
If the FRP rod of mm is used, it will be 200 m and the tension will be small, so the seabed chain 2'can be small. Of course, since the tension is small, the chain 2 connected to the buoy 1 is also lightweight. And comparing the holding power of the anchor 5, it is 5 when it is a conventional polyester rope with a diameter of 45 mm.
It is 902 kgf, but it can be 2595 kgf using the FRP rod. Similarly, in Cases Nos. 2 and 3, the FRP rod is smaller than the polyester rope in the maximum tension, the necessary preliminary buoyancy of the buoy 1, the clearance length of the chain 2 ', and the anchor holding force. Therefore, it can be seen that the entire mooring device for the floating body can be small.
【００１６】実施例は海面に浮遊するブイについて説明
したが、浮魚礁等の固定係留物も含まれる。又海中に浮
遊する浮体を係留する場合も本発明は適用される。Although the embodiments have described buoys floating on the surface of the sea, fixed moorings such as floating reefs are also included. The present invention is also applicable to mooring a floating body floating in the sea.
【００１７】[0017]
【発明の効果】ＦＲＰロッドは、従来の合成繊維ロープ
に較べて、単位面積当たりの引張強度が大きいので、直
径の細いロープで十分強度が得られる。また、直径の細
いロープを使用することで、潮流抵抗が少なくなり、係
留装置に発生する張力が軽減されるので、係留装置の強
度、ブイの予備浮力、アンカーの把駐力等に対する要求
が軽減され、装置全体の小型化、低コスト化が可能とな
る。Since the FRP rod has a larger tensile strength per unit area than the conventional synthetic fiber rope, a rope having a small diameter can provide sufficient strength. Also, by using a rope with a small diameter, the flow resistance is reduced and the tension generated in the mooring device is reduced, so the requirements for the strength of the mooring device, the preliminary buoyancy of the buoy, the holding force of the anchor, etc. are reduced. As a result, the size and cost of the entire device can be reduced.
【図１】表層ブイを係留するための係留装置の側面図で
ある。FIG. 1 is a side view of a mooring device for mooring a surface buoy.
【図２】ブイとチェーンの関係を示す側面図である。FIG. 2 is a side view showing a relationship between a buoy and a chain.
【図３】チェーン離底長さＬを説明するための側面図で
ある。FIG. 3 is a side view for explaining a chain bottom clearance length L.
１ 表層ブイ ２′ チェーン ３′ スイベル ４ ＦＲＰロッド 1 Surface buoy 2'Chain 3'Swivel 4 FRP rod
Claims (2)
に浮遊するブイ、浮魚礁を係留するための海上又は海中
浮遊物の係留ロープにおいて、前記ロープは一方向ガラ
ス繊維を樹脂でロッド状に成形したＦＲＰロッドである
ことを特徴とする浮体の係留ロープ。1. A mooring rope for mooring a buoy floating on the sea or in the sea to an anchor sunk on the sea floor, or a floating reef for mooring a floating reef, wherein the rope is a rod made of unidirectional glass fiber made of resin. A mooring rope for a floating body, which is a molded FRP rod.
ラス繊維を約８０００本／ｍｍ2 の密度で束にしてガラ
スの重量含有率約７５％となるようにエポキシ樹脂で結
合固化してロッド状としたことを特徴とする請求項１に
記載の浮体の係留ロープ。2. The FRP rod is formed by bundling glass fibers having a diameter of about 0.01 mm at a density of about 8000 fibers / mm 2 and binding and solidifying with an epoxy resin so that the weight content of glass is about 75%. The mooring rope for a floating body according to claim 1, wherein:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4335340A JPH06158571A (en) | 1992-11-20 | 1992-11-20 | Mooring rope for buoy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4335340A JPH06158571A (en) | 1992-11-20 | 1992-11-20 | Mooring rope for buoy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06158571A true JPH06158571A (en) | 1994-06-07 |
Family
ID=18287425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4335340A Pending JPH06158571A (en) | 1992-11-20 | 1992-11-20 | Mooring rope for buoy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06158571A (en) |
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|---|---|---|---|---|
| US6848862B1 (en) * | 2003-11-04 | 2005-02-01 | Harris Corporation | Multi-gimbal marine communication cable to ocean buoy transition interface |
| JP2011521820A (en) * | 2008-04-23 | 2011-07-28 | プリンシプル・パワー・インコーポレーテツド | Column-stabilized offshore platform with water entrapment plate and asymmetric mooring system for offshore wind turbine support |
| JP2012201297A (en) * | 2011-03-28 | 2012-10-22 | Doi Tekko Kk | Floating body mooring device |
| US9810204B2 (en) | 2010-10-15 | 2017-11-07 | Principle Power, Inc. | Floating wind turbine platform structure with optimized transfer of wave and wind loads |
| US9879654B2 (en) | 2013-05-20 | 2018-01-30 | Principle Power, Inc. | System and method for controlling offshore floating wind turbine platforms |
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-
1992
- 1992-11-20 JP JP4335340A patent/JPH06158571A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6848862B1 (en) * | 2003-11-04 | 2005-02-01 | Harris Corporation | Multi-gimbal marine communication cable to ocean buoy transition interface |
| US9446822B2 (en) | 2008-04-23 | 2016-09-20 | Principle Power, Inc. | Floating wind turbine platform with ballast control and water entrapment plate systems |
| JP2015016860A (en) * | 2008-04-23 | 2015-01-29 | プリンシプル・パワー・インコーポレーテツド | Column-stabilized offshore platform with water-entrapment plates and asymmetric mooring system for support of offshore wind turbines |
| JP2015037935A (en) * | 2008-04-23 | 2015-02-26 | プリンシプル・パワー・インコーポレーテツド | Column-stabilized offshore platform with water-entrapment plates and asymmetric mooring system for support of offshore wind turbines |
| JP2015180823A (en) * | 2008-04-23 | 2015-10-15 | プリンシプル・パワー・インコーポレーテツド | Column-stabilized offshore platform with water-entrapment plates and asymmetric mooring system for support of offshore wind turbines |
| JP2011521820A (en) * | 2008-04-23 | 2011-07-28 | プリンシプル・パワー・インコーポレーテツド | Column-stabilized offshore platform with water entrapment plate and asymmetric mooring system for offshore wind turbine support |
| US9810204B2 (en) | 2010-10-15 | 2017-11-07 | Principle Power, Inc. | Floating wind turbine platform structure with optimized transfer of wave and wind loads |
| JP2012201297A (en) * | 2011-03-28 | 2012-10-22 | Doi Tekko Kk | Floating body mooring device |
| US9879654B2 (en) | 2013-05-20 | 2018-01-30 | Principle Power, Inc. | System and method for controlling offshore floating wind turbine platforms |
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