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JPS61134409A - Method of preventing scouring of underwater structure - Google Patents

Method of preventing scouring of underwater structure

Info

Publication number
JPS61134409A
JPS61134409A JP25283084A JP25283084A JPS61134409A JP S61134409 A JPS61134409 A JP S61134409A JP 25283084 A JP25283084 A JP 25283084A JP 25283084 A JP25283084 A JP 25283084A JP S61134409 A JPS61134409 A JP S61134409A
Authority
JP
Japan
Prior art keywords
underwater structure
fins
scouring
prevent
present
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
Application number
JP25283084A
Other languages
Japanese (ja)
Inventor
Hitoshi Hatano
倫 波多野
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.)
Nihon Solid Co Ltd
Original Assignee
Nihon Solid Co Ltd
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 Nihon Solid Co Ltd filed Critical Nihon Solid Co Ltd
Priority to JP25283084A priority Critical patent/JPS61134409A/en
Publication of JPS61134409A publication Critical patent/JPS61134409A/en
Pending legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/0017—Means for protecting offshore constructions

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Revetment (AREA)

Abstract

PURPOSE:To prevent the scouring, by a method wherein a fin arranged in a lateral row is located to an underwater structure. CONSTITUTION:A fine 4 is arranged in laterla row in the vicinity of the foundation part of an underwater structure 1, and plural fins 4' and 4'' are installed above the fin 4. This constitution causes a vortex train to be intermittently produced in a water flow around the underwater structure 1 by means of the fins 4, 4' amd 4'' to prevent the production of a downward flow, resulting in the possibility to prevent the occurrence of scouring phenomenon.

Description

【発明の詳細な説明】 本発明は水中における柱状構造体の洗掘防止方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for preventing scouring of a columnar structure in water.

従来、橋脚、ケーソン等の水中に設けられた構造体は水
流によって根元が洗掘され該構造体が不安定になる欠点
があった。Conventionally, structures installed underwater, such as bridge piers and caissons, have had the disadvantage that their roots are scoured by water currents, making the structures unstable.

本発明者は、これら従来の欠点を解決すべく種々検討を
重ねた結果、本発明方法を完成したものである。The present inventor has completed the method of the present invention as a result of various studies aimed at solving these conventional drawbacks.

すなわち本発明は、横列状のフィンを水中構造体に設番
プることを特徴とする水中構造体の洗掘防止方法である
。That is, the present invention is a method for preventing scour of an underwater structure, which is characterized by installing horizontal rows of fins on the underwater structure.

次に本発明を図面を参照しながら説明する。Next, the present invention will be explained with reference to the drawings.

まず従来は第２図に示すように水中構造体１に水流が当
り、該水流が水平流２から下降流３に変換し、その結果
この下降流によって水中構晋体の基礎部分が洗掘される
現象が生起していた。First, as shown in Fig. 2, in the past, a water flow hit the underwater structure 1, and the water flow was converted from a horizontal flow 2 to a downward flow 3, and as a result, the foundation of the underwater structure was scoured by this downward flow. A phenomenon was occurring.

本発明は第１図に示すように、水中構造体の基礎部分近
傍に横列にフィン４を設ける。このフィン４の外に、さ
らに複数のフィン４′、４″を横列に設けることによっ
て洗掘防止効果は向上する。As shown in FIG. 1, the present invention provides fins 4 in horizontal rows near the base of an underwater structure. In addition to the fins 4, a plurality of fins 4', 4'' are provided in rows to improve the scour prevention effect.

また本発明にあってはフィン４の上部に縦列槽動フィン
（以下補助フィンと称する）５を設けることによって一
層効果は向上する。この補正フィン５は水中構造体の全
周面に設けてもよく、また一部の局面（例えば上流側の
み）だけでも良い。特に上流側に設けられる補助フィン
５は水の抵抗を受は条のでフィンの幅は小さいほうが好
ましい。Further, in the present invention, the effect is further improved by providing vertically-coupled tank moving fins (hereinafter referred to as auxiliary fins) 5 above the fins 4. The correction fins 5 may be provided on the entire circumferential surface of the underwater structure, or may be provided only on a part of the surface (for example, only on the upstream side). In particular, since the auxiliary fins 5 provided on the upstream side receive water resistance, it is preferable that the width of the fins be small.

本発明□の水中構造体としては第１図に示すように角柱
体の外、円柱体、楕円体、その他いずれの形状のもので
もよい。The underwater structure according to the present invention □ may have any shape other than a prismatic shape, a cylindrical shape, an ellipsoidal shape, or any other shape as shown in FIG.

本発明によれば、フィンを設けることによって水中構造
体周辺の水流に断続的に渦列を形成させて下降流の生起
を防止することができ、それにともなう洗掘現象も有効
に防止することができる。According to the present invention, by providing the fins, it is possible to intermittently form vortex rows in the water flow around the underwater structure, thereby preventing the occurrence of downward flow, and the accompanying scouring phenomenon can also be effectively prevented. can.

【図面の簡単な説明】[Brief explanation of the drawing]

１４１図は本発明のフィンを設けた水中構造体の斜視図
を示し、第２図は補助フィンを設けた水中構造体の平面
図を示し、第３図は従来の水中構造体における水流の状
態を示す側面図を示す。FIG. 141 shows a perspective view of an underwater structure provided with the fins of the present invention, FIG. 2 shows a plan view of the underwater structure provided with auxiliary fins, and FIG. 3 shows the state of water flow in a conventional underwater structure. FIG.

Claims (1)

【特許請求の範囲】[Claims] 横列状のフィンを水中構造体に設けることを特徴とする
洗掘防止方法。A scour prevention method characterized by providing horizontal rows of fins on an underwater structure.
JP25283084A 1984-12-01 1984-12-01 Method of preventing scouring of underwater structure Pending JPS61134409A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25283084A JPS61134409A (en) 1984-12-01 1984-12-01 Method of preventing scouring of underwater structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25283084A JPS61134409A (en) 1984-12-01 1984-12-01 Method of preventing scouring of underwater structure

Publications (1)

Publication Number Publication Date
JPS61134409A true JPS61134409A (en) 1986-06-21

Family

ID=17242794

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25283084A Pending JPS61134409A (en) 1984-12-01 1984-12-01 Method of preventing scouring of underwater structure

Country Status (1)

Country Link
JP (1) JPS61134409A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100494355B1 (en) * 2002-10-23 2005-06-13 배석동 Structure of Preventing Water Stream Tunnel of Underwater Fabric
JP2006342614A (en) * 2005-06-10 2006-12-21 Yokoyama Kiso Koji:Kk Protection method for the foundation of floating structures
CN113718830A (en) * 2021-09-16 2021-11-30 中国华能集团清洁能源技术研究院有限公司 Offshore wind power foundation with scour prevention function

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49129341A (en) * 1973-04-18 1974-12-11

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49129341A (en) * 1973-04-18 1974-12-11

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100494355B1 (en) * 2002-10-23 2005-06-13 배석동 Structure of Preventing Water Stream Tunnel of Underwater Fabric
JP2006342614A (en) * 2005-06-10 2006-12-21 Yokoyama Kiso Koji:Kk Protection method for the foundation of floating structures
CN113718830A (en) * 2021-09-16 2021-11-30 中国华能集团清洁能源技术研究院有限公司 Offshore wind power foundation with scour prevention function

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