JPS59179920A - Underwater structure - Google Patents
Underwater structureInfo
- Publication number
- JPS59179920A JPS59179920A JP5588283A JP5588283A JPS59179920A JP S59179920 A JPS59179920 A JP S59179920A JP 5588283 A JP5588283 A JP 5588283A JP 5588283 A JP5588283 A JP 5588283A JP S59179920 A JPS59179920 A JP S59179920A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- attached
- water
- float
- annular
- 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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Underground Or Underwater Handling Of Building Materials (AREA)
- Revetment (AREA)
Abstract
Description
【発明の詳細な説明】
(産業上の利用分野)
この発明は、築島、作業ヤード、締切堤、防波堤などの
構造物の基礎工を構築するなどに好適な水中構造物に関
する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an underwater structure suitable for constructing foundations for structures such as built islands, work yards, cofferdams, and breakwaters.
(従来の技術)
従来、水中構造物を構築するには次のような手段が一般
に採られていた。(Prior Art) Conventionally, the following methods have generally been used to construct underwater structures.
■盛土による築島、■鋼矢板、鋼管矢板による工法、■
メンブレンによる海上プラットホームの建設。■Building an island using embankment, ■Construction method using steel sheet piles and steel pipe sheet piles,■
Construction of offshore platforms with membranes.
しかし■の方法は法勾配がl:2〜1:5程度必要とし
、扱う土砂の量が多大で施工に手間がかかる。(りの方
法は頂部でしか補強できないため、水深が深くなると矢
板断面が過大となり材料コスト、施工費が犬となる。■
メンブレン内に砂を入れた後、水を排除して外部からの
水圧により土圧に抵抗させるとともに、砂を締め固める
ことを期待している。そのために、底部もメンブレンで
囲んであり、内部を掘削したシ、杭を地盤内に貫入させ
ることはできない。However, method (2) requires a legal slope of about 1:2 to 1:5, requires a large amount of earth and sand, and is laborious to construct. (With this method, reinforcement can only be done at the top, so when the water gets deeper, the cross section of the sheet pile becomes too large, which increases material and construction costs.)
After filling the membrane with sand, the hope is that water will be expelled and the water pressure from the outside will resist earth pressure and compact the sand. For this reason, the bottom is also surrounded by a membrane, making it impossible for piles to penetrate into the ground even if the inside is excavated.
(発明の目的)
この発明は上記問題点に着目してなされたものであり、
その目的は、極めて簡単な構造で構築、撤去が容易であ
り、地盤、水深等の条件に左右されず、しかもケーンン
沈設、杭打膜等の構造物の基礎工が施工できる水中構造
物を提案するにある。(Object of the invention) This invention was made focusing on the above problems,
The purpose is to propose an underwater structure that has an extremely simple structure, is easy to construct and dismantle, is not affected by conditions such as ground and water depth, and can be used for foundation work of structures such as cane sinking and pile driving. There is something to do.
(発明の構成) 以下図示する実施例によシ説明する。(Structure of the invention) The following will explain the embodiments shown in the drawings.
この水中構造物は折曲性がある膜材料からなり、両端が
開口した筒状体1を外殻とする。その一端部にフロート
2を取付けて水上に浮せてあり、他端部はスカート状に
やや拡大開口し、環状アンカー3を取付けて水底に固定
してあり、その先端縁部は水底4に沿って筒状体l内側
に折曲している。This underwater structure is made of a bendable membrane material, and has a cylindrical body 1 with both ends open as an outer shell. A float 2 is attached to one end of the float so that it floats on the water, and the other end has a slightly enlarged skirt-like opening, and an annular anchor 3 is attached to fix it to the bottom of the water. It is bent inside the cylindrical body l.
このように配置した筒状体1の外周フープ方向に所定の
間隔で複数の環状補強材5が取付けてあり、その内部に
は砂6を充填し、円筒形マウンドの水中構造物が構成さ
れている。なお、この構造物は外側水底に沈設したアン
カー7にローブ8で係止して設置安定性の向上を図υ上
端周縁に頂面環状補強材5′ を取付は形状の維持な図
り、頂面を舗装面9となし作業性の向上を図った。A plurality of annular reinforcing members 5 are attached at predetermined intervals in the direction of the outer circumferential hoop of the cylindrical body 1 arranged in this manner, and the inside thereof is filled with sand 6 to form a cylindrical mound underwater structure. There is. This structure is designed to improve installation stability by anchoring anchors 7 sunk in the outer water bottom with lobes 8. A top annular reinforcing member 5' is attached to the upper edge of the structure to maintain its shape. The paved surface 9 was used to improve workability.
この発明で用いる膜材料としてはゴム引布、合成繊維織
物、不織布、合成樹脂シート積層物等の高引張強度と折
りたたみできる折曲性とを有するものである。環状補強
材としては鋼材、FRP等の高分子複合材料、あるいは
合成繊維複合材等の高引張強度を有する材料を用いる。The membrane material used in this invention is one having high tensile strength and foldability, such as rubberized cloth, synthetic fiber fabric, nonwoven fabric, and synthetic resin sheet laminate. As the annular reinforcing material, a material having high tensile strength such as steel, a polymer composite material such as FRP, or a synthetic fiber composite material is used.
ただし頂面環状補強材5′ および下端部を固定する環
状アンカー3は高い剛性をあわせもつ鋼材等を用い形状
の保持を図る必要がある。However, the top annular reinforcing member 5' and the annular anchor 3 for fixing the lower end must be made of steel or the like having high rigidity to maintain their shape.
この構造物は円筒形をなすが、下端直径は通常頂部直径
りの1.0〜1.5倍である。環状補強材は頂部直径り
の115〜1/10の鉛直間隔で配置し、投入した砂の
押拡げ圧力に抵抗させる。The structure has a cylindrical shape, but the diameter at the bottom is typically 1.0 to 1.5 times the diameter at the top. The annular reinforcing members are arranged at vertical intervals of 115 to 1/10 of the top diameter to resist the spreading pressure of the introduced sand.
(作 用)
この水中構造物は以上の構成である。その内部には砂が
充填してあり筒状体には砂によって押し拡げようとする
圧力(土圧)が発生する。この圧力は径が犬となると非
常に大きな引張力として作用するが、環状補強材がフー
プ方向に取付けであるので、比較的薄い膜材料であって
もこの引張力に耐えることができる。構造物の底は開放
してあり直接水底となっているので、ケーソン沈設、杭
打設など構造物の基礎工を施工できる。また、構造が簡
単で、勾配が小で比較的小量の砂の投入、排出のみで、
内水を排除する必要が々いので、容易かつ迅速に構築、
あるいけ撤去できる。さらに地盤中に根入りする必要が
なく、地盤の硬軟、不陸等に影響されず、水深にも左右
されない。(Function) This underwater structure has the above configuration. Its interior is filled with sand, and pressure (earth pressure) is generated in the cylindrical body as it tries to expand due to the sand. This pressure acts as a very large tensile force when the diameter is large, but since the annular reinforcement is attached in the direction of the hoop, even a relatively thin membrane material can withstand this tensile force. Since the bottom of the structure is open and directly under water, foundation work for the structure such as caisson sinking and pile driving can be carried out. In addition, the structure is simple, the slope is small, and only a relatively small amount of sand needs to be input and discharged.
Easy and quick construction, as it is necessary to eliminate inland water.
It can be removed if necessary. Furthermore, it does not need to be rooted in the ground, is not affected by the hardness or softness of the ground, unevenness, etc., and is not affected by water depth.
この構造物を構築するには、膜材料からなる筒状体1に
所定の間隔で環状補強材5を取付け、蛇腹状に折りたた
み現地に搬入する。ここで一端部にフロート2を取り付
けて水面上に浮かせ、設置位置外側に沈設したアンカー
7に係止し7固定した後、折りたたんだ筒状体1を水中
に引きおろし、下端部に環状アンカーを取イ」けて水底
4に固定する。その時下端縁部を水底4地盤面に沿い内
側に折曲げて、砂の流出を防ぐとともに、底部地盤のJ
べり破壊に対する補強を図る。この状態で内部に砂を投
入し、必要に応じ頂部を舗装などして仕」二げる。To construct this structure, annular reinforcing members 5 are attached at predetermined intervals to a cylindrical body 1 made of membrane material, folded into a bellows shape, and transported to the site. Here, a float 2 is attached to one end to float it on the water surface, and after locking and fixing 7 to an anchor 7 sunk outside the installation position, the folded cylindrical body 1 is pulled down into the water, and a ring-shaped anchor is attached to the lower end. Take it out and fix it on the bottom 4 of the water. At that time, bend the lower edge inward along the ground surface of the bottom 4 to prevent sand from flowing out and
To strengthen against sliding failure. In this state, sand is poured inside and the top is paved if necessary.
撤去は、上記の逆の手順で簡単に行なうことができる。Removal can be easily carried out by reversing the above steps.
このとき、外殻をなす筒状体その他部材は繰返し使用で
きる。At this time, the cylindrical body and other members forming the outer shell can be used repeatedly.
さらに例えはこの構造物をケーソンの築島などに利用し
た場合には、沈設時に大きな側圧が作用し5、他の工法
ではこれに対処することが困離であるが、この構造物で
は補強材を強化することで容易に対処できる。Furthermore, if this structure is used to build a caisson island, etc., a large lateral pressure will be applied when it is submerged5, which is difficult to deal with with other construction methods, but with this structure, reinforcing materials are not required. It can be easily dealt with by strengthening it.
(発明の効果)
この発明は牌+の通りで、この水中構造物d次の効果を
もたらす。σ)極めて簡単な構造で構築、撤去が容易で
、地盤、水深等の条件に左右されず低コストで構築でき
る。6)ケーソン沈設、杭打設等杓造物の基礎工の施工
ができる。(Effects of the Invention) This invention is as shown in tile +, and this underwater structure brings about the following effects. σ) It has an extremely simple structure, is easy to construct and remove, and can be constructed at low cost regardless of conditions such as ground and water depth. 6) Able to perform foundation work for ladle structures such as sinking caissons and driving piles.
図面は実施例の水中構造物の縦断面図である。
1・・筒状体、2・・フロート、3・・環状アンカー、
4・・水底、5・・環状補強材、5′・・頂面環状補強
材、6・・砂、
7・・アンカー、8・・ロープ、9・・舗装面。The drawing is a longitudinal sectional view of an underwater structure according to an example. 1. Cylindrical body, 2. Float, 3. Annular anchor,
4. Water bottom, 5. Annular reinforcement, 5'. Top annular reinforcement, 6. Sand, 7. Anchor, 8. Rope, 9. Paved surface.
Claims (1)
状体の一端部にフロートを取付けて水上に浮かせてあり
、他端部は水底に固定してあり、筒状体の外周フープ方
向に所定の間隔で環状補強材を配し、筒状体内に土砂が
充填しであることを特徴とする水中構造物。(1) A cylindrical body made of a bendable membrane material. A float is attached to one end of a cylindrical body with open ends to float it on the water. The other end is fixed to the bottom of the water, and the outer circumference of the cylindrical body is An underwater structure characterized in that annular reinforcing members are arranged at predetermined intervals in the direction of the hoop, and the cylindrical body is filled with earth and sand.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5588283A JPS59179920A (en) | 1983-03-31 | 1983-03-31 | Underwater structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5588283A JPS59179920A (en) | 1983-03-31 | 1983-03-31 | Underwater structure |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS59179920A true JPS59179920A (en) | 1984-10-12 |
JPS6237171B2 JPS6237171B2 (en) | 1987-08-11 |
Family
ID=13011464
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5588283A Granted JPS59179920A (en) | 1983-03-31 | 1983-03-31 | Underwater structure |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59179920A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5120156A (en) * | 1990-08-31 | 1992-06-09 | Rauch Hans G | Submerged breakwater and barrier reef |
EP2252741B1 (en) * | 2008-02-05 | 2016-12-14 | Shoreform Limited | Sediment accretion method |
JP2020159017A (en) * | 2019-03-26 | 2020-10-01 | 裕弘 増田 | Sediment retention submerged bank in membrane structure |
-
1983
- 1983-03-31 JP JP5588283A patent/JPS59179920A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5120156A (en) * | 1990-08-31 | 1992-06-09 | Rauch Hans G | Submerged breakwater and barrier reef |
EP2252741B1 (en) * | 2008-02-05 | 2016-12-14 | Shoreform Limited | Sediment accretion method |
JP2020159017A (en) * | 2019-03-26 | 2020-10-01 | 裕弘 増田 | Sediment retention submerged bank in membrane structure |
Also Published As
Publication number | Publication date |
---|---|
JPS6237171B2 (en) | 1987-08-11 |
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