JPH07187065A - Buoyancy body for floating structure - Google Patents
Buoyancy body for floating structureInfo
- Publication number
- JPH07187065A JPH07187065A JP5333130A JP33313093A JPH07187065A JP H07187065 A JPH07187065 A JP H07187065A JP 5333130 A JP5333130 A JP 5333130A JP 33313093 A JP33313093 A JP 33313093A JP H07187065 A JPH07187065 A JP H07187065A
- Authority
- JP
- Japan
- Prior art keywords
- buoyancy body
- buoyancy
- resin
- fiber reinforced
- reinforced plastic
- 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
Landscapes
- Bridges Or Land Bridges (AREA)
- Revetment (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は浮体構造物用浮力体に関
し、特に、ポリスチレン系樹脂発泡体を浮力体として用
いた改良された浮体構造物用浮力体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a buoyancy body for a floating body structure, and more particularly to an improved buoyancy body for a floating body structure using a polystyrene resin foam as a buoyancy body.
【０００２】[0002]
【従来の技術】船の乗降、積み荷の揚げ下ろし、船の接
舷、繋船などに便宜を図るべく設けられる浮き桟橋など
の構造物は、それを水面上に支持するために浮力体が付
設される。従来、この種の浮力体はポリエチレンなどを
ブロー成形した中空体、あるいは空洞を持つ鋼製品やコ
ンクリート製品、さらにはその内部に発泡樹脂を充填し
たものなどが用いられている。2. Description of the Related Art Structures such as floating piers provided for the convenience of boarding / unloading of ships, unloading / loading of ships, docking of ships, berthing, etc. are provided with buoyant bodies to support them on the water surface. It Conventionally, as this type of buoyant body, a hollow body formed by blow molding of polyethylene or the like, a steel product or a concrete product having a cavity, or a product having a foamed resin filled therein is used.
【０００３】さらに、より改良された浮力体として、所
定形状の発泡スチロールの外面にウレタン樹脂を吹き付
けて被膜を密着成形して浮力体を構成し、さらにその内
部を貫通する貫通孔を形成して取り付け用貫通ボルトに
より構造物にとりつけるようにしたもの（実開平３−１
０９９９４号公報参照）、あるいは、エポキシ樹脂など
の熱硬化性樹脂と微小中空体とポリスチレン発泡体粒と
の混合物を硬化させてなる心材の全表面をエポキシ樹脂
によりコートし、さらにそのコート層を繊維強化プラス
チックで２〜３層積層したもの（実公平３−１４３４５
号公報参照）などが知られている。Further, as a further improved buoyancy body, a urethane resin is sprayed on the outer surface of a styrofoam having a predetermined shape to form a buoyancy body by contact-molding a coating, and a through hole penetrating the inside thereof is formed and attached. Which is attached to the structure with a through bolt for
No. 09994), or a core material formed by curing a mixture of a thermosetting resin such as an epoxy resin, micro hollow bodies and polystyrene foam particles is coated with an epoxy resin, and the coating layer is further coated with a fiber. 2 to 3 layers of reinforced plastic (Jikkou 3-14345)
(See Japanese Patent Publication) and the like are known.
【０００４】[0004]
【発明が解決しようとする課題】内部に空洞を持つ浮力
体は製造も容易であり低コストのものであるがひび割れ
などにより水が浮力体内部に侵入して浮力を低減させる
可能性がある。鋼製品やコンクリート製品の空洞部に発
泡樹脂を充填した浮力体は浮力低下の心配はないものの
その製造が困難であり比重も高く、またコスト高になっ
ている。The buoyancy body having a cavity inside is easy to manufacture and is low in cost, but water may enter the buoyancy body due to cracks or the like to reduce the buoyancy. The buoyancy body in which the cavity of a steel product or a concrete product is filled with a foamed resin has no fear of lowering the buoyancy, but its manufacture is difficult, its specific gravity is high, and its cost is high.
【０００５】発泡スチロールの外面にウレタン樹脂を吹
き付けたものは比較的製造が容易であり耐久性も高い利
点はあるが、ウレタン樹脂吹き付け層は強度的に十分で
なく偏荷重が作用したような場合にウレタン樹脂層が破
壊する恐れがある。また、熱硬化性樹脂とポリスチレン
発泡体粒などを混合したものを硬化させエポキシ樹脂を
心材として用い、そこに繊維強化プラスチック層を形成
したものは比較的に低比重でありかつ圧壊抵抗も高いも
のであるが、心材の製造過程が複雑でありコスト的にも
高価なものとなる。The foamed polystyrene having the urethane resin sprayed on its outer surface is relatively easy to manufacture and has high durability, but the urethane resin sprayed layer is not sufficient in strength and is subjected to an unbalanced load. The urethane resin layer may be destroyed. Also, a mixture of thermosetting resin and polystyrene foam particles is cured and epoxy resin is used as a core material, and a fiber reinforced plastic layer is formed on it. It has a relatively low specific gravity and high crush resistance. However, the manufacturing process of the core material is complicated and costly.
【０００６】本発明は、上記の不都合を解消した浮体構
造物用浮力体を提供することを目的としており、より具
体的には、十分な浮力を持ち、かつ、偏荷重による外皮
の破壊を回避でき、さらに全体として高い圧壊抵抗を持
ちながら低いコストで製造することのできる浮体構造物
用浮力体を提供することを目的としている。An object of the present invention is to provide a buoyant body for a floating body structure in which the above-mentioned inconvenience is eliminated. More specifically, the buoyant body has sufficient buoyancy and avoids damage to the outer skin due to an unbalanced load. It is an object of the present invention to provide a buoyant body for a floating body structure that can be manufactured at low cost while having high crush resistance as a whole.
【０００７】[0007]
【課題を解決するための手段】本発明者らは、上記の目
的を達成することのできる浮体構造物用浮力体を開発す
べく、多くの材料について実験と研究を行った。その過
程において、ポリスチレン系樹脂発泡体はコスト的にも
安価でありまた低比重でかつ所要の機械的強度を持つこ
とから、浮体構造物用浮力体の心材として用いるには最
も適していることを知った。また、浮体構造物用浮力体
の外皮としてはガラス繊維強化プラスチックは靱性もあ
り引張りにも強くまた耐腐食性も高いことからきわめて
有効な素材であることも確認した。The present inventors have conducted experiments and researches on many materials in order to develop a buoyant body for a floating body structure which can achieve the above-mentioned object. In that process, polystyrene-based resin foam is the most suitable for use as the core material of the buoyancy body for the floating structure because it is inexpensive in cost, has low specific gravity, and has the required mechanical strength. Knew. It was also confirmed that glass fiber reinforced plastic is an extremely effective material for the outer skin of the buoyancy body for a floating structure, because it has toughness, tensile strength, and high corrosion resistance.
【０００８】しかし同時に、ポリスチレン系樹脂発泡体
の表面へ直接ガラス繊維強化プラスチックを成形する場
合において、不飽和ポリエステル樹脂などを直接塗布す
るとポリスチレン系樹脂発泡体の表面が溶解してしまい
形状が不安定になることを知った。その理由は、ガラス
繊維強化プラスチックの樹脂成分である不飽和ポリエス
テル樹脂あるいはエポキシ樹脂などの粘度を下げるため
にスチレンモノマーなどのビニルモノマーが用いられて
おり、このビニルモノマーがポリスチレン系樹脂発泡体
に対して溶剤として作用することによると解される。However, at the same time, when the glass fiber reinforced plastic is directly molded on the surface of the polystyrene resin foam, if the unsaturated polyester resin or the like is directly applied, the surface of the polystyrene resin foam is dissolved and the shape becomes unstable. I knew that. The reason is that vinyl monomers such as styrene monomers are used to reduce the viscosity of unsaturated polyester resins or epoxy resins, which are resin components of glass fiber reinforced plastics. It is understood that by acting as a solvent.
【０００９】本発明者らはさらに実験を継続することに
より、スチレン改質ポリエチレン発泡樹脂成形体は不飽
和ポリエステル樹脂あるいはエポキシ樹脂を樹脂成分と
するガラス繊維強化プラスチックに対して不溶性であ
り、塗布後も安定していることを知った。しかし、スチ
レン改質ポリエチレン発泡樹脂成形体はポリスチレン系
樹脂発泡体よりもコスト的に高価なことから、スチレン
改質ポリエチレン発泡樹脂成形体で浮体構造物用浮力体
の心材の全てを構成することは必ずしも得策でないこと
も知覚した。[0009] The inventors of the present invention further conducted experiments and found that the styrene-modified polyethylene foamed resin molded article was insoluble in the glass fiber reinforced plastic containing an unsaturated polyester resin or an epoxy resin as a resin component. I also found that it was stable. However, since the styrene-modified polyethylene foamed resin molded body is more expensive than the polystyrene-based resin foamed body, it is not possible to form all of the core material of the buoyancy body for a floating structure with the styrene-modified polyethylene foamed resin molded body. I also perceived that it was not always a good idea.
【００１０】本発明は上記の知覚に基づくものであり、
本発明による浮体構造物用浮力体はポリスチレン系樹脂
発泡体の表層にスチレン改質ポリエチレン発泡樹脂成形
体が積層され、さらに、その周囲にガラス繊維強化プラ
スチックが成形された構造を持つ。本発明でいうスチレ
ン改質ポリエチレン発泡樹脂成形体とは、例えばエチレ
ンとスチレンの共重合発泡体をいい、具体的には積水化
成品工業（株）製ピオセラン（登録商標）などがあげら
れる。The present invention is based on the above perception,
The buoyancy body for a floating structure according to the present invention has a structure in which a styrene-modified polyethylene foamed resin molding is laminated on the surface layer of a polystyrene resin foam, and further, glass fiber reinforced plastic is molded around it. The styrene-modified polyethylene foamed resin molded product referred to in the present invention means, for example, a copolymer foamed product of ethylene and styrene, and specific examples thereof include PIOCELAN (registered trademark) manufactured by Sekisui Plastics Co., Ltd.
【００１１】心材としてのポリスチレン系樹脂発泡体の
比重や容積は目的とする浮力体の用途に応じて適宜選定
される。その周囲に積層するスチレン改質ポリエチレン
発泡樹脂成形体は比重２０〜５００ｋｇ／ｍ3 程度のも
のが強度的観点から好ましく、その厚みを１０〜１００
ｍｍ程度であれば十分である。積層は嵌着あるいは接着
などにより行うことができる。The specific gravity and volume of the polystyrene resin foam as the core material are appropriately selected according to the intended use of the buoyancy body. The styrene-modified polyethylene foamed resin molded product laminated around it preferably has a specific gravity of about 20 to 500 kg / m 3 from the viewpoint of strength, and has a thickness of 10 to 100.
It is sufficient if it is about mm. Lamination can be performed by fitting or adhering.
【００１２】前記の積層構造物に対して、樹脂として不
飽和ポリエステル、エポキシなどを樹脂成分として使用
したガラス繊維強化プラスチックをハンドレイアップ法
などにより成形させる。図１は上記の構成を持つ本発明
による浮体構造物用浮力体の一実施例の一部破断した斜
視図であり、ポリスチレン系樹脂発泡体１の周囲にスチ
レン改質ポリエチレン発泡樹脂成形体２が接着積層さ
れ、さらに、その周囲にガラス繊維強化プラスチック３
が塗布された構造を持つ。この浮力体には貫通孔４が形
成されており、この貫通孔には図示しないスリーブおよ
びフンンジ５が嵌入されていて、該貫通孔４を通る図示
しない長尺ボルトにより、浮力体は構造物側に取り付け
られる。A glass fiber reinforced plastic using unsaturated polyester, epoxy or the like as a resin as a resin component is molded on the above laminated structure by a hand lay-up method or the like. FIG. 1 is a partially broken perspective view of an embodiment of a buoyancy body for a floating structure according to the present invention having the above-mentioned structure. A polystyrene-based resin foam body 1 is surrounded by a styrene-modified polyethylene foam resin molding body 2. Adhesively laminated, and glass fiber reinforced plastic 3 around it
It has a structure coated with. A through hole 4 is formed in the buoyancy body, and a sleeve and a funnel 5 (not shown) are fitted in the through hole. The buoyancy body is attached to the structure side by a long bolt (not shown) passing through the through hole 4. Attached to.
【００１３】[0013]
【実施例】以下、実施例により本発明を説明する。心材
として、２０００×２０００×４００ｍｍの寸法のポリ
スチレン系樹脂発泡体を用意し、その周囲の全面に、厚
さ５０ｍｍのスチレン改質ポリエチレン発泡樹脂成形体
を接着により一体化し、浮体本体を作成した。EXAMPLES The present invention will be described below with reference to examples. As a core material, a polystyrene-based resin foam having a size of 2000 × 2000 × 400 mm was prepared, and a styrene-modified polyethylene foam resin molded body having a thickness of 50 mm was integrally bonded by adhesion to the entire surface around it to form a floating body.
【００１４】浮体本体の全表面に、樹脂成分として不飽
和ポリエステルを使用したガラス繊維強化プラスチック
をハンドレイアップ法により成形した。ガラス繊維強化
プラスチックの成形の過程において、浮体本体の変形は
見られなかった。３日後に浮力体を破壊して、ガラス繊
維強化プラスチックとスチレン改質ポリエチレン発泡樹
脂成形体との接着面を観察したが、何の変化も見られな
かった。この浮力体の比重は５０ｋｇ／ｍ3 であり、衝
撃破壊強度は５０ｋｇ／ｍ2 であって、浮体構造物用浮
力体として満足するものであった。A glass fiber reinforced plastic using unsaturated polyester as a resin component was molded on the entire surface of the floating body by a hand lay-up method. No deformation of the floating body was observed in the process of molding the glass fiber reinforced plastic. After 3 days, the buoyant body was destroyed and the adhesive surface between the glass fiber reinforced plastic and the styrene-modified polyethylene foamed resin molding was observed, but no change was observed. The specific gravity of this buoyancy body was 50 kg / m 3 , and the impact fracture strength was 50 kg / m 2 , which was satisfactory as a buoyancy body for a floating structure.
【００１５】[0015]
【発明の効果】上記の構造を持つ本発明による浮体構造
物用浮力体によれば、十分な浮力と強度を持ちかつ製造
コストの低い浮体構造物用浮力体が提供される。According to the buoyancy body for a floating structure according to the present invention having the above structure, a buoyancy body for a floating structure having a sufficient buoyancy and strength and a low manufacturing cost is provided.
【図１】本発明による浮体構造物用浮力体の一部破断斜
視図。FIG. 1 is a partially cutaway perspective view of a buoyancy body for a floating body structure according to the present invention.
１…ポリスチレン系樹脂発泡体、２…スチレン改質ポリ
エチレン発泡樹脂成形体、３…ガラス繊維強化プラスチ
ック、４…取り付け用の貫通孔1 ... Polystyrene resin foam, 2 ... Styrene-modified polyethylene foam resin molding, 3 ... Glass fiber reinforced plastic, 4 ... Through hole for attachment
Claims (1)
レン改質ポリエチレン発泡樹脂成形体が積層され、さら
に、その周囲にガラス繊維強化プラスチックが塗布され
た構造を持つ浮体構造物用浮力体。1. A buoyancy body for a floating structure having a structure in which a styrene-modified polyethylene foamed resin molding is laminated on a surface layer of a polystyrene resin foam, and further, glass fiber reinforced plastic is applied to the periphery thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5333130A JPH07187065A (en) | 1993-12-27 | 1993-12-27 | Buoyancy body for floating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5333130A JPH07187065A (en) | 1993-12-27 | 1993-12-27 | Buoyancy body for floating structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07187065A true JPH07187065A (en) | 1995-07-25 |
Family
ID=18262633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5333130A Pending JPH07187065A (en) | 1993-12-27 | 1993-12-27 | Buoyancy body for floating structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07187065A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7121767B1 (en) * | 2001-11-14 | 2006-10-17 | Cuming Corporation | Rugged foam buoyancy modules and method of manufacture |
| DE102005046794A1 (en) * | 2005-09-29 | 2007-04-12 | Clement, Jürgen | Floatable structure |
| KR101131503B1 (en) * | 2011-12-12 | 2012-04-04 | 서현석 | Device for reinforce float |
| KR101349966B1 (en) * | 2013-05-29 | 2014-02-17 | 동신산업(주) | Assemblable type pontoon |
| CN105235832A (en) * | 2015-11-03 | 2016-01-13 | 无锡同春新能源科技有限公司 | Buoyancy block with PIN core material and PE buoyancy box wrapped by glass fiber coated with ultraviolet-proof materials |
| CN105383648A (en) * | 2015-11-22 | 2016-03-09 | 无锡同春新能源科技有限公司 | Water floating UAV (Unmanned Aerial Vehicle) parking platform produced through buoyancy material |
| WO2018051766A1 (en) * | 2016-09-14 | 2018-03-22 | シバタ工業株式会社 | Coating unit, coating structure, and method for forming coating member of coating unit |
| JP2018048540A (en) * | 2016-09-14 | 2018-03-29 | シバタ工業株式会社 | Coating unit and coating structure and method for forming coating member of coating unit |
| KR20180034801A (en) * | 2016-09-28 | 2018-04-05 | 주식회사 세기종합환경 | Floatable object and method of manufacturing the same |
| KR20230118474A (en) * | 2022-02-04 | 2023-08-11 | (주)블루웨이 | An unit buoyancy body and a floating structure assembly method using the buoyancy body |
| WO2023204475A1 (en) * | 2022-04-18 | 2023-10-26 | 주식회사 세기종합환경 | On-water floating structure capable of preventing collision |
-
1993
- 1993-12-27 JP JP5333130A patent/JPH07187065A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7121767B1 (en) * | 2001-11-14 | 2006-10-17 | Cuming Corporation | Rugged foam buoyancy modules and method of manufacture |
| DE102005046794A1 (en) * | 2005-09-29 | 2007-04-12 | Clement, Jürgen | Floatable structure |
| DE102005046794B4 (en) * | 2005-09-29 | 2008-03-06 | Clement, Jürgen | Floatable structure |
| KR101131503B1 (en) * | 2011-12-12 | 2012-04-04 | 서현석 | Device for reinforce float |
| KR101349966B1 (en) * | 2013-05-29 | 2014-02-17 | 동신산업(주) | Assemblable type pontoon |
| CN105235832A (en) * | 2015-11-03 | 2016-01-13 | 无锡同春新能源科技有限公司 | Buoyancy block with PIN core material and PE buoyancy box wrapped by glass fiber coated with ultraviolet-proof materials |
| CN105383648A (en) * | 2015-11-22 | 2016-03-09 | 无锡同春新能源科技有限公司 | Water floating UAV (Unmanned Aerial Vehicle) parking platform produced through buoyancy material |
| WO2018051766A1 (en) * | 2016-09-14 | 2018-03-22 | シバタ工業株式会社 | Coating unit, coating structure, and method for forming coating member of coating unit |
| JP2018048540A (en) * | 2016-09-14 | 2018-03-29 | シバタ工業株式会社 | Coating unit and coating structure and method for forming coating member of coating unit |
| KR20180034801A (en) * | 2016-09-28 | 2018-04-05 | 주식회사 세기종합환경 | Floatable object and method of manufacturing the same |
| KR20230118474A (en) * | 2022-02-04 | 2023-08-11 | (주)블루웨이 | An unit buoyancy body and a floating structure assembly method using the buoyancy body |
| WO2023204475A1 (en) * | 2022-04-18 | 2023-10-26 | 주식회사 세기종합환경 | On-water floating structure capable of preventing collision |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3627622A (en) | Partial resin coated foamed resinous articles | |
| US3269887A (en) | Settable, flexible, foamed resins | |
| JPH07187065A (en) | Buoyancy body for floating structure | |
| US3150032A (en) | Abuse resistant articles of manufacture and method of making | |
| CN103153604B (en) | Structural composite laminate | |
| WO2005118275A2 (en) | Improved structural and other composite materials and methods for making same | |
| US5028459A (en) | Imitation stone counter material and method of making the same | |
| CA2518873A1 (en) | Structural and other composite materials and methods for making same | |
| US20140030457A1 (en) | Molded foam product, buoyant material and construction material including same | |
| US20160107053A1 (en) | Pickleball paddle | |
| JPH07144381A (en) | Proximate surface reinforcement of honeycomb sandwich structure by enhancing durability using foamable adhesive | |
| CA2314678A1 (en) | Sandwich structure and method of repairing the same | |
| WO2002074843A3 (en) | Hdpe (high density polyethylene) foam core laminate structure | |
| US3660216A (en) | Semi-rigid paneling | |
| GB2171008A (en) | Baths | |
| JPH07233630A (en) | Plate body for concrete formwork | |
| US4401715A (en) | Fiber reinforced plastic molded articles and process for the production thereof | |
| JPH08142273A (en) | Composite panel | |
| KR101279828B1 (en) | manufacturing method of floating body for sailing route light buoyage | |
| JP2006247366A (en) | Surfboard | |
| JPH08133174A (en) | Buoyant material | |
| JPH08276934A (en) | Pallet made of expanded material | |
| JPH1134233A (en) | Panel | |
| JPH0893217A (en) | Plate body for concrete form | |
| JP2000190412A (en) | Lightweight laminated sheet |