JPH01127800A - Anti-rolling device for sunk buried caisson - Google Patents

Anti-rolling device for sunk buried caisson

Info

Publication number
JPH01127800A
JPH01127800A JP62285423A JP28542387A JPH01127800A JP H01127800 A JPH01127800 A JP H01127800A JP 62285423 A JP62285423 A JP 62285423A JP 28542387 A JP28542387 A JP 28542387A JP H01127800 A JPH01127800 A JP H01127800A
Authority
JP
Japan
Prior art keywords
submerged
water
box
caisson
immersed
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
JP62285423A
Other languages
Japanese (ja)
Inventor
Yutaro Motoyoshi
元良 勇太郎
Hide Isa
伊佐 秀
Kenji Wada
憲治 和田
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 JP62285423A priority Critical patent/JPH01127800A/en
Publication of JPH01127800A publication Critical patent/JPH01127800A/en
Pending legal-status Critical Current

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  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Abstract

PURPOSE: To reduce swing by sealing fluid moving in the opposite direction to the direction of swing of a submerged caisson into a water tank in the submerged caisson submerged by suspending from a ship on water. CONSTITUTION: Vertical caissons 2, 21 are formed by a bottom plate, a side plate, and a ceiling plate, and a horizontal pipe 3 with valve 31 is set to communicate with an intermediate part between the caissons 2 and 21 in a lowermost part and constitute a damping arrangement 1. Furthermore, a space 41 is provided in an upper part of the caissons 2, 21 of the damping arrangement 1, respectively, to seal fluid such as water 4 and is arranged at the center of an inner bottom face of the submerged caisson. When the submerged caisson is suspended by a wire rope from a submerged article installing ship and is submerged, water 4 is moved in the direction opposite to swing of the submerged caisson in accordance with the occurrence of swing of the submerged caisson so that it acts as moment for returning the submerged caisson to a stationary position. Consequently, damping effect of the submerged caisson is increased, positioning on a sea bottom face becomes very easy, and work efficiency is improved.

Description

【発明の詳細な説明】 〈産業上の利用分野〉 本発明は水上の沈設船などから吊り下げた沈埋函を水底
に沈設して行う水底トンネル工法において、沈埋函の沈
設時に発生する沈埋函の揺動を減衰させる沈埋函の減揺
装置に関するものである。
[Detailed Description of the Invention] <Industrial Application Field> The present invention is an underwater tunnel construction method in which a submerged box suspended from a submerged vessel on the water is sunk to the bottom of the water. This invention relates to a rocking reduction device for a submerged box that dampens rocking.

く本発明が解決しようとする問題点〉 沈埋函による水底トンネル工法は、その延長距離に応じ
て複数個を水底面上にて連結結合して構築される。
Problems to be Solved by the Present Invention The underwater tunnel construction method using immersed boxes is constructed by connecting and connecting a plurality of tunnels on the underwater surface depending on the extension distance.

水面上の沈設船などからワイヤーロープなどで吊り下げ
られた沈埋函を、所定の位置に沈設する時、その位置決
めは沈設船を移動することにより行われる。
When a sunken box suspended from a sunken ship or the like on the surface of the water by a wire rope or the like is sunk into a predetermined position, the positioning is performed by moving the sunken ship.

その時、沈設船の移動開始時刻と水中にある沈埋函の移
動開始時刻がその流体抵抗によりずれてしまう。
At that time, the time at which the submerged ship starts moving and the time when the submerged box starts moving differ due to the fluid resistance.

そのため、沈埋函は沈設船の吊り点を支点として振り子
の様な単振動を起こして揺動する。
Therefore, the immersed box oscillates using the hanging point of the submerged ship as a fulcrum, creating a simple motion like a pendulum.

従って、以下のような問題が生じる。Therefore, the following problems arise.

(1)沈埋函の揺動が大きいため、水底面上の位置決め
が困難である。
(1) Because the immersed box swings so much, it is difficult to position it on the water bottom surface.

(2)沈埋函が大きく揺動して、水底の既設沈埋函など
に衝突するため、連結結合作業が危険である。
(2) The connection work is dangerous because the submerged box swings greatly and collides with existing submerged boxes on the bottom of the water.

(3)短時間に沈埋函を移動させると、揺動がさらに太
き(なり、揺動の減衰時間が長くなる。
(3) If the immersed box is moved in a short period of time, the oscillation becomes even thicker, and the decay time of the oscillation becomes longer.

即ち、沈埋函が静止状態に戻るまで長時間待つ必要があ
り、著しく作業効率が低下する。
That is, it is necessary to wait for a long time until the submerged burial box returns to a stationary state, which significantly reduces work efficiency.

く本発明の目的〉 本発明は上記のような問題点を解決するためになされた
もので、沈埋函の沈設時の揺動を減衰し、効率良く、し
かも安全に沈設作業を行える沈埋函の減揺装置を提供す
ることを目的とする。
OBJECTS OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and provides an immersed burial box that attenuates the vibrations when the immersed burial box is being sunk and allows efficient and safe sinking work. The purpose of the present invention is to provide a vibration reduction device.

く本発明の構成〉 以下、図面を参照しながら本発明の一実施例について説
明する。
Configuration of the Present Invention> An embodiment of the present invention will be described below with reference to the drawings.

本発明の減揺袋g11は、鉛直面2.21と水平管3か
ら構成される。
The anti-sway bag g11 of the present invention is composed of a vertical surface 2.21 and a horizontal tube 3.

くイ〉鉛直面(第1図) 鉛直面2.21は、底板と側板及び天板からなる同形の
函体である。
〉Vertical surface (Fig. 1) Vertical surface 2.21 is a box of the same shape consisting of a bottom plate, side plates, and top plate.

鉛直面2.21の側板の最下部には、後述する水平管3
を連結するための開口部を設ける。
At the bottom of the side plate on the vertical plane 2.21 is a horizontal pipe 3, which will be described later.
Provide an opening for connecting the

鉛直面2.21は、開口部を有する側板を対向させて位
置させる。
Vertical surfaces 2.21 are positioned opposite side plates having openings.

く口〉水平管(第1図) 水平管3は、中間部にバルブ31を有する管体である。Exit〉Horizontal pipe (Fig. 1) The horizontal pipe 3 is a pipe body having a valve 31 in the middle part.

この水平管3の両端部を、前述の鉛直面2.21の開口
部にそれぞれ連結し、鉛直面2.21と水平管3の内部
空間を連通させる。
Both ends of this horizontal tube 3 are connected to the openings of the vertical surface 2.21, respectively, so that the vertical surface 2.21 and the internal space of the horizontal tube 3 are communicated with each other.

連結する場合には、鉛直面2.21と水平管3が直角に
なるように行う。
When connecting, it is done so that the vertical plane 2.21 and the horizontal pipe 3 are at right angles.

バルブ31は、水平管3内の流体の流量を調節し、鉛直
面2.21内の流体の上下振動周期を調節するものであ
る。
The valve 31 is for adjusting the flow rate of the fluid in the horizontal pipe 3 and the vertical vibration period of the fluid in the vertical plane 2.21.

くハ〉流体の封入(第1図) 以上のように構成した減揺装置1の内部には、水4など
の流体を封入する。
(c) Enclosure of fluid (FIG. 1) A fluid such as water 4 is enclosed inside the vibration reduction device 1 configured as described above.

水4の封入量は、沈埋函の総排水量の数パーセントの重
量が望ましい。
The amount of water 4 enclosed is preferably several percent of the total drainage volume of the submerged burial box.

封入する時には、鉛直面2.21の上部に空間41を設
けて封入する。
When enclosing, a space 41 is provided above the vertical surface 2.21 for enclosing.

く二〉減揺装置の設r!!(第2図) 第2図は、沈設船5からワイヤーロープなどにする作業
を示しでいる。
2〉Installation of vibration reduction device! ! (Fig. 2) Fig. 2 shows the work of making a wire rope or the like from the submerged ship 5.

本発明の減揺装置11は、この沈埋函6の内部底面61
の中央に設置すると効果的である。
The vibration reduction device 11 of the present invention has an internal bottom surface 61 of this submerged burial box 6.
It is effective to install it in the center of the

このとき、減揺袋M1の鉛直面2.21は、底面61に
対して直角方向に設置する。
At this time, the vertical surface 2.21 of the anti-sway bag M1 is installed in a direction perpendicular to the bottom surface 61.

く本発明の作用〉(第3〜5図) 第3図は、沈埋曇6が揺動していない静止状態を示して
おり、鉛直面2.21内の水4も静止状態であり、水位
は等しい。
Effect of the present invention> (Figures 3 to 5) Figure 3 shows a stationary state in which the submerged cloud 6 is not oscillating, and the water 4 in the vertical plane 2.21 is also in a stationary state, and the water level is are equal.

第4図に示すように、沈埋函6が矢印方向に揺動すると
、鉛直面21(Illの水位が上昇し、鉛直面21と鉛
直面2内の水4に水位差が生じる(破線で示す)。
As shown in FIG. 4, when the immersed burial box 6 swings in the direction of the arrow, the water level on the vertical surface 21 (Ill) rises, creating a water level difference between the vertical surface 21 and the water 4 in the vertical surface 2 (as shown by the broken line). ).

そのため、鉛直面21内の水4が鉛直面2内に流入し、
沈埋函6の揺動と反対方向に水4が移動することになる
Therefore, the water 4 in the vertical plane 21 flows into the vertical plane 2,
The water 4 moves in the opposite direction to the rocking of the immersed burial box 6.

従って、この水4の反対方向の移動が、沈埋函6を静止
位置に戻すモーメントとして沈埋函6に働き、減揺効果
を高めることができる。
Therefore, the movement of the water 4 in the opposite direction acts on the immersed burial box 6 as a moment to return the immersed burial box 6 to the rest position, thereby increasing the sway reduction effect.

次に、沈埋函6は第4図の矢印方向と反対に、第5図の
矢印方向に揺動する。
Next, the submerged burial box 6 swings in the direction of the arrow in FIG. 5, opposite to the direction of the arrow in FIG.

この場合ら上記と同様に、沈埋函6の揺動と反対方向に
水4が移動するため、沈埋函6の揺動を減衰させること
ができる。
In this case, similarly to the above, since the water 4 moves in the opposite direction to the rocking of the immersed burial box 6, the rocking of the immersed burial box 6 can be attenuated.

以上のような作用が繰り返し沈埋函6に働くことによっ
て、沈埋函6の揺動を効果的に減衰させることができる
By repeatedly acting on the immersed burial box 6, the vibration of the immersed burial box 6 can be effectively damped.

くその他の実施例〉 減揺装置のその他の実施例としては、第6.7図に示す
ような、円筒形あるいは円柱形などの水槽7.71が考
えられる。
Other Embodiments As other embodiments of the vibration damping device, a cylindrical or cylindrical water tank 7.71 as shown in FIG. 6.7 can be considered.

これらの水槽7.71は、減衰効果を考慮して複数段に
形成されており、各層の内部には水4を封入しである。
These water tanks 7 and 71 are formed in multiple stages in consideration of the damping effect, and water 4 is sealed inside each layer.

水4の合計水量は、上記実施例と同様に、沈埋函6の総
排水量の数パーセントの重量とする。
The total amount of water 4 is set to be several percent of the total amount of water discharged from the immersed burial box 6, as in the above embodiment.

これによって第8〜10図に示すように、沈埋函6が揺
動するき、上記実施例と同様に、水4が揺動方向と反対
方向に移動し、沈埋函6を静止位置に戻すモーメントと
して沈埋函6に働く。
As a result, as shown in FIGS. 8 to 10, when the immersed burial box 6 swings, the water 4 moves in the opposite direction to the swinging direction, as in the above embodiment, and a moment is generated to return the immersed burial box 6 to its resting position. Works as a submerged box 6.

従って、これらの簡単な構造の水槽7.71を用いるこ
とによって、極めて簡便に減衰効果を高めることができ
る。
Therefore, by using these water tanks 7 and 71 with a simple structure, the damping effect can be enhanced very easily.

く本発明の効果〉 本発明は以上説明したようになるので、次のような効果
を期待することができる。
Effects of the Present Invention> Since the present invention has been described above, the following effects can be expected.

くイ〉水上の沈設船などから吊り下げた沈埋函を水底に
沈設して行う水底トンネル工法において、従来技術では
、沈埋函の沈設時に発生する沈埋函の揺動が大きいため
、水底面上での位置決めが困難である。
Kui> In the underwater tunnel construction method, which is carried out by lowering a submerged box suspended from a submerged ship on the water, etc., in the conventional technology, there is a large amount of shaking of the submerged box that occurs when the submerged box is sunk. positioning is difficult.

それに対して本発明は、鉛直面と水平管よりなる減揺装
置によって、沈埋函の揺動を効果的に減衰させることが
できる。
In contrast, the present invention can effectively attenuate the rocking of a submerged burial box using a rocking damping device comprising a vertical surface and a horizontal pipe.

即ち、減揺装置内に封入した水を、沈埋函の揺動と反対
方向に移動させ、沈埋函を静止位置に戻すモーメントと
して沈埋函に作用させ、減揺効果を高めることができる
わけである。
In other words, the water sealed in the rocking reduction device is moved in the opposite direction to the rocking of the immersed box, acting on the immersed box as a moment to return the immersed box to its resting position, thereby increasing the rocking reduction effect. .

そのため、沈埋函の水底面上での位置決めが非常に容易
になり、作業効率を向上させることができる。
Therefore, positioning of the submerged box on the water bottom becomes very easy, and work efficiency can be improved.

く口〉従来技術では、沈埋函が大きく揺動して、水底の
既設沈埋函などに衝突するため、連結結合作業が非常に
危険である。
In the conventional technology, the connection work is extremely dangerous because the immersion box swings a lot and collides with the existing immersion box on the bottom of the water.

しかし本発明は、沈埋函の揺動を減衰させ、小さくする
ことができる。
However, the present invention can attenuate and reduce the shaking of the immersed burial box.

そのため、安全に連結結合作業を行うことができる。Therefore, connection work can be performed safely.

くハ〉従来は、短時間に沈埋函を移動させると、揺動が
さらに大きくなり、揺動の減衰時間が長(なる。
Conventionally, if the immersed burial box was moved in a short period of time, the shaking would become even larger and the decay time of the shaking would become longer.

即ち、沈埋函が静止状態に戻るまで長時間待つ必要があ
り、著しく作業効率が低下する。
That is, it is necessary to wait for a long time until the submerged burial box returns to a stationary state, which significantly reduces work efficiency.

しかし本発明は、沈埋函の揺動を効果的に減衰させるこ
とができるため、短時間で沈埋函を静止状態に戻すこと
ができる。
However, the present invention can effectively attenuate the rocking of the immersed burial box, so the immersed burial box can be returned to a stationary state in a short time.

そのため、従来のように揺動が減衰するまで長時間待つ
必要がなく、作業を短時間に効率よく行うことができる
Therefore, it is not necessary to wait for a long time until the swinging motion is attenuated as in the conventional case, and the work can be done efficiently in a short time.

く二〉本発明の減揺装置には、内部に水を封入した円筒
形あるいは円柱形などの簡単な構造の水槽を用いること
もできる。
(2) A water tank having a simple structure such as a cylindrical or cylindrical shape with water sealed inside can also be used in the vibration reduction device of the present invention.

そのため、装置の製造コストが低下し、極めて簡便に沈
埋函の揺動を減衰させることができる。
Therefore, the manufacturing cost of the device is reduced, and the shaking of the immersed burial box can be attenuated very easily.

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

第1図:本発明の一実施例の説明図 第2図:沈埋函の沈設方法の説明図 第3〜5図二減揺装置の作用の説明図 Figure 1: Explanatory diagram of one embodiment of the present invention Figure 2: Explanatory diagram of the method of submerging a submerged box Figures 3 to 5. Two explanatory diagrams of the action of the vibration reduction device.

Claims (1)

【特許請求の範囲】 水上の沈設船などから吊り下げた沈埋函を水底に沈設し
て行う水底トンネル工法において、沈埋函の沈設時に発
生する沈埋函の揺動を減衰させる減揺装置であって、 沈埋函内に設置した水槽内に、 沈埋函の揺動方向と反対方向に移動するよう流体を封入
して構成する、 沈埋函の減揺装置
[Scope of Claims] A rock reduction device that damps the shaking of a submerged box that occurs when the submerged box is sunk in an underwater tunnel construction method in which the submerged box is suspended from a submerged ship or the like on the water and is sunk to the bottom of the water. , an immersed box rocking reduction device that consists of a water tank installed inside the immersed box and a fluid filled in so that the fluid moves in the opposite direction to the rocking direction of the immersed box.
JP62285423A 1987-11-13 1987-11-13 Anti-rolling device for sunk buried caisson Pending JPH01127800A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62285423A JPH01127800A (en) 1987-11-13 1987-11-13 Anti-rolling device for sunk buried caisson

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62285423A JPH01127800A (en) 1987-11-13 1987-11-13 Anti-rolling device for sunk buried caisson

Publications (1)

Publication Number Publication Date
JPH01127800A true JPH01127800A (en) 1989-05-19

Family

ID=17691329

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62285423A Pending JPH01127800A (en) 1987-11-13 1987-11-13 Anti-rolling device for sunk buried caisson

Country Status (1)

Country Link
JP (1) JPH01127800A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7062146B1 (en) * 2022-01-13 2022-05-02 東亜建設工業株式会社 How to install the box in water and the device to prevent the box from swinging

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7062146B1 (en) * 2022-01-13 2022-05-02 東亜建設工業株式会社 How to install the box in water and the device to prevent the box from swinging

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