JPS60195217A - Installer for large-size marine structure - Google Patents
Installer for large-size marine structureInfo
- Publication number
- JPS60195217A JPS60195217A JP59053258A JP5325884A JPS60195217A JP S60195217 A JPS60195217 A JP S60195217A JP 59053258 A JP59053258 A JP 59053258A JP 5325884 A JP5325884 A JP 5325884A JP S60195217 A JPS60195217 A JP S60195217A
- Authority
- JP
- Japan
- Prior art keywords
- marine structure
- levers
- purge
- float
- jacket
- 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
-
- 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
-
- 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
- E02B17/02—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
-
- 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
- E02B17/02—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
- E02B17/021—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto with relative movement between supporting construction and platform
-
- 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
- E02B2017/0039—Methods for placing the offshore structure
- E02B2017/0043—Placing the offshore structure on a pre-installed foundation structure
-
- 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
- E02B2017/0039—Methods for placing the offshore structure
- E02B2017/0047—Methods for placing the offshore structure using a barge
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明【よ、パージなどの運搬用浮力体に搭載した大
型海洋構造物をジャケットなどの基礎構造物上に据付け
るために使用される大型海洋構造物の据イ］装置に関す
る。[Detailed description of the invention] Industrial field of application This invention Regarding equipment.
従来技術
パージに搭載した大型海洋構造物をジャケット上に据付
ける場合、従来は、バラスト調整によりパージを浮上さ
せて海洋構造物をジャケットの真上に移動したのち、バ
ラスト調整によりパージを徐々に沈下させて海洋構造物
をパージからジャケットに移している。ところが、バラ
スト調整によるパージの沈下速度は遅いので、海洋構造
物をパージからジャケットに移すときに、波のうねりの
谷の位置では海洋構造物がジャケットにのってパージが
海洋構造物から離れ、波のうねりの山の位置では再びパ
ージが海洋構造物に衝突して海洋構造物がジャケットか
ら持上げられるという危険な状態が生じる。このため、
従来をよ、パージと海洋構造物の間または海洋構造物と
基礎構造物の間に緩衝装置を設けて、衝撃ノコを緩和す
る必要があった。Conventional technology When installing a large offshore structure mounted on a purge on a jacket, conventionally, the purge was floated by ballast adjustment to move the offshore structure directly above the jacket, and then the purge was gradually lowered by ballast adjustment. and moving offshore structures from purge to jacket. However, the sinking speed of the purge due to ballast adjustment is slow, so when moving the offshore structure from the purge to the jacket, at the trough of the wave swell, the offshore structure rides on the jacket and the purge separates from the offshore structure. At the crest of the wave swell, the purge again impinges on the marine structure, creating a dangerous situation in which the marine structure is lifted from the jacket. For this reason,
Conventionally, it was necessary to provide a shock absorber between the purge and the offshore structure or between the offshore structure and the foundation structure to cushion the impact saw.
発明の目的
この発明の目的は、海洋構造物を運搬用浮力体から基礎
構造物に移すときにζ運搬用浮力体を瞬時に海洋構造物
から離して、運搬用浮力体休と海洋構造物の一衝突を確
実に防止できる大型海洋構造物の据付装置を提供するこ
とにある。Purpose of the Invention An object of the present invention is to instantly separate the ζ transport buoyant body from the marine structure when transferring the marine structure from the transport buoyant body to the foundation structure, and to separate the transport buoyant body from the marine structure. An object of the present invention is to provide an installation device for a large marine structure that can reliably prevent collisions.
発明の購成
この発明による大型海洋構造物の据付装置は、海洋構造
物運搬用浮力体に複数の起倒自在な海洋構造物支持用レ
バーとレバー起倒用油圧シリンダが設けられ、これらの
油圧シリンダが１つの切換弁または同時に作動する複数
の切換弁を介して油圧源に接続されているものである。Purchase of the Invention In the installation device for a large marine structure according to the present invention, a floating body for transporting a marine structure is provided with a plurality of levers for supporting a marine structure that can be raised and lowered, and a hydraulic cylinder for raising and lowering the levers. The cylinder is connected to a hydraulic power source via one switching valve or a plurality of switching valves that operate simultaneously.
実施例と作用
第１図は、パージ（海洋構造物運搬用浮力体）（１）に
搭載した大型海洋構造物（２）を海上に設置したジャケ
ット（基礎構造物）（３）上に据付けている状態を示す
。Example and operation Figure 1 shows a large marine structure (2) mounted on a purge (buoyant body for transporting marine structures) (1) installed on a jacket (foundation structure) (3) installed on the sea. Indicates the state in which
パージ（１）上面の４箇所に海洋構造物支持用レバー（
４）が起倒自在に取付１ノられ、各レバー（４）とパー
ジ（１）の間にレバー起倒用′油圧シリンダ（５）がそ
れぞれ設置されている。There are offshore structure support levers (
4) are mounted so as to be able to be raised and lowered, and hydraulic cylinders (5) for raising and lowering the levers are installed between each lever (4) and the purge (1).
第２図に示すように、４つの油圧シリンダ（５）の両側
の油室は１つの切換弁（６）を介して油圧源に接続され
ている。そして、各シリンダ（５）のロンド（７）側の
油室と切換弁（６）との間に、それぞれ、可変流量制御
弁（８）と油室側から切換弁（６）側にのみ油を流す逆
止弁〈９）とが並列に設けられ、各シリンダ〈５）のヘ
ッド側の油室と切換弁（６）との間にも、それぞれ、可
変流量制御弁（１０）と油室側から切換弁（６）側にの
み油を流す逆止弁（１１）とが並列に設けられている。As shown in FIG. 2, the oil chambers on both sides of the four hydraulic cylinders (5) are connected to a hydraulic power source via one switching valve (6). Between the oil chamber on the Rondo (7) side of each cylinder (5) and the switching valve (6), oil is provided only from the variable flow control valve (8) and the oil chamber side to the switching valve (6) side. A variable flow control valve (10) and an oil chamber are provided in parallel between the oil chamber on the head side of each cylinder (5) and the switching valve (6). A check valve (11) that allows oil to flow only from the side to the switching valve (6) side is provided in parallel.
第２図において、（１２）は油タンク、（１３）はフィ
ルタ、（１４）は油圧ポンプ、（１５）はポンプ駆動用
電動機、（１６）はリリーフ弁、（１７）は圧力計であ
る。In FIG. 2, (12) is an oil tank, (13) is a filter, (14) is a hydraulic pump, (15) is a pump driving electric motor, (16) is a relief valve, and (17) is a pressure gauge.
海洋構造物（２）の適当箇所に複数の中空支柱（１８）
が垂直に固定され、各支柱（１８）にはそれぞれ脚（１
９）が昇降自在にはめ入れられている。そして、各支柱
（１８）の上側に、脚（１９）を支柱（１８）に沿って
昇降させるとともに任意の位置に固定しつるジヤツキア
ップ装置（２０〉が設けられている。Multiple hollow supports (18) at appropriate locations on the offshore structure (2)
is fixed vertically, and each support (18) has a leg (1
9) is fitted so that it can be raised and lowered freely. A jack-up device (20>) is provided above each support column (18) for raising and lowering the leg (19) along the support column (18) and fixing it in an arbitrary position.
ジャケラ１〜（３）は、図示は省略したが、海底に固定
状に設置されている。ジャケット（３）の上部には、海
洋構造物（２）の脚（１９）に対応して、海面上に突出
した複数の垂直な支柱（２１）が設けられており、各支
柱（２１）の上端には、脚（１９）の下部が挿入される
底のある穴（図示略）がおいている。Although not shown in the drawings, Jackeras 1 to (3) are fixedly installed on the seabed. A plurality of vertical columns (21) protruding above the sea surface are provided on the upper part of the jacket (3), corresponding to the legs (19) of the marine structure (2), and each column (21) has a At the upper end there is a hole (not shown) with a bottom into which the lower part of the leg (19) is inserted.
海洋構造物（２）を輸送する場合、油圧シリンダ（５）
のロンド（７）を伸ばした状態に固定して、レバー（４
）を起立状態にしておく。When transporting offshore structures (2), hydraulic cylinders (5)
Fix the rondo (7) in the extended position, and then release the lever (4).
) in a standing position.
そして、海洋＃Ｉ構造物２）を適宜な手段によってパー
ジ（１）の起立状態のレバー（４）上に搭載し、これを
固縛構造物（図示略）によりパージ（１）に固縛した状
態で据付海域まで輸送する。なお、輸送時には、海洋構
造物（２）の脚（１９）はジヤツキアップ装置（２０）
により上方に移動した位置に固定されている。Then, the marine #I structure 2) was mounted on the upright lever (4) of the purge (1) by appropriate means, and this was secured to the purge (1) by a lashing structure (not shown). The equipment will be transported to the installation area in the same condition. In addition, during transportation, the legs (19) of the marine structure (2) are equipped with a jack-up device (20).
It is fixed in the position moved upward by.
パージ（１）が据付海域に到着したならば、次のように
して、海洋構造物（２）をジャケット（３）上に据付け
る。まず、パージ（１）をジャケラ１−（３）の支柱（
２１）の間に移動し、これらの支柱（２１）の真上に対
応する脚（１９）がくるようにパージ（１）を位置決め
して係留したのち、固縛構造物を撤去する（第１図の状
態）。次に、ジヤツキアップ装置（２０）を解除して、
脚（１９）を自重により支柱（１８）に沿って落下させ
、脚（１９）の下部をジャケット（３）の支柱（２１）
の上端の穴の底に当るまでこれに挿入する。そして、こ
のような状態でジヤツキアップ装置（２０）により脚（
１９）を固定し、これと同時に、切換弁（６）を作動さ
せて油圧シリンダ（５）のロンド（７）を縮めることに
より、レバー（４）を倒して海洋構造物（２）から瞬時
に離脱させる。これにより、海洋構造物（２）はパージ
（１）から完全に離れてジャケット（３）の支柱（２１
）により受りられ、以後は、波があってもパージ（１）
およびレバー（４）が再び海洋Ｉ！！造物動物）に衝突
することはない。なお、起立状態のレバー（４）の最高
点と倒伏状態のレバー（４）の最高点との高さの差は、
このときに波があっても海洋構造物（２）に衝突しない
ように、たとえば波高の１／２以上とする。Once the purge (1) has arrived at the installation area, the marine structure (2) is installed on the jacket (3) as follows. First, purge (1) is applied to the Jakera 1-(3) pillar (
21), position and moor the purge (1) so that the corresponding legs (19) are directly above these supports (21), and then remove the lashing structure (first state). Next, release the jack up device (20) and
The leg (19) is dropped along the support (18) by its own weight, and the lower part of the leg (19) is attached to the support (21) of the jacket (3).
Insert it into this until it hits the bottom of the hole at the top end. Then, in this state, the leg (
19) and, at the same time, actuate the switching valve (6) to retract the rond (7) of the hydraulic cylinder (5), thereby tilting the lever (4) and instantly removing it from the offshore structure (2). make them leave. This causes the marine structure (2) to completely separate from the purge (1) and to support the support (21) of the jacket (3).
), and from then on, even if there is a wave, purge (1)
And the lever (4) is again the ocean I! ! (artificial animals). The difference in height between the highest point of the lever (4) in the upright state and the highest point of the lever (4) in the collapsed state is:
In order to prevent waves from colliding with the marine structure (2) even if there are waves at this time, the height should be set to, for example, 1/2 or more of the wave height.
上記のようにして海洋構造物（２）がパージ（１）から
ジャケット（３）に移されたならば、ジヤツキアップ装
置（２０）により海洋構造物（２）を脚（１９）に沿っ
て昇降させて海面上の所定高さに固定する。そして、脚
（１９）と上下の支柱（１８） （２１）を溶接し、最
後に、パージ（１）およびジヤツキアップ装置（２０）
を撤去して据付けを完了する。Once the offshore structure (2) has been transferred from the purge (1) to the jacket (3) as described above, the offshore structure (2) is raised and lowered along the legs (19) by the jack-up device (20). and fixed at a specified height above sea level. Then, the legs (19) and the upper and lower supports (18) (21) are welded, and finally the purge (1) and jack-up device (20) are welded.
Remove and complete the installation.
上記実施例では、複数の油圧シリンダ（５）が１つの切
換弁（６）を介して油圧源に接続されているが、油圧シ
リンダ（５）は同時に作動する複数の切換弁を介して油
圧源に接続されてもよい。たとえば、各油圧シリンダ（
５）と油圧源との間にそれぞれ１つずつ切換弁を設け、
これらの切換弁を連動させて同時に作動するようにして
もよい。また、レバー（４）の構成、数、配置なども、
上記実施例のものに限らず、適宜変更可能である。In the above embodiment, a plurality of hydraulic cylinders (5) are connected to a hydraulic power source via one switching valve (6), but the hydraulic cylinders (5) are connected to a hydraulic power source via a plurality of switching valves that operate simultaneously. may be connected to. For example, each hydraulic cylinder (
5) Provide one switching valve each between the oil pressure source and the oil pressure source,
These switching valves may be linked so that they operate simultaneously. Also, the configuration, number, arrangement, etc. of the lever (4), etc.
The present invention is not limited to the above embodiments, and may be modified as appropriate.
発明の効果
この発明の大型海洋構造物の据付装置によれば、海洋構
造物運搬用浮力体に複数の起倒自在な海洋構造物支持用
レバーとレバー起倒用油圧シリンダが設りられ、これら
の油圧シリンダが１つの切換弁または同時に作動する複
数の切換弁を介して油圧源に接続されているので、海洋
構造物を起立状態のレバーにより持上げた状態で運搬用
浮力体から基礎構造物上に移したときに、切換弁を作動
させてレバーを倒すことにより、レバーおよび運搬用浮
力体を瞬時に海洋構造物から離すことができる。したが
って、海洋構造物を運搬用浮力体から基礎構造物上に移
す−ときの波による運搬用浮力体と海洋構造物の衝突を
確実に防止することができ、従来のような緩衝装置が不
要になる。Effects of the Invention According to the installation device for a large marine structure of the present invention, a floating body for transporting a marine structure is provided with a plurality of levers for supporting a marine structure that can be freely raised and a hydraulic cylinder for raising and lowering the levers. The hydraulic cylinders are connected to the hydraulic power source via one switching valve or multiple switching valves operating simultaneously, so that when the offshore structure is lifted by the upright lever, it can be moved from the transport buoy to the base structure. By activating the switching valve and tilting the lever, the lever and the buoyant transport body can be instantly separated from the marine structure. Therefore, it is possible to reliably prevent collisions between the floating transportation body and the marine structure caused by waves when moving the marine structure from the buoyant transportation body to the foundation structure, eliminating the need for conventional shock absorbers. Become.
図面はこの発明の実施例を示し、第１図は据（＝１時の
パージ、海洋構造物およびジャケット上部の正面図、第
２図は大型海洋構造物の据付装置の油圧回路図である。
（１）・・・パージ（海洋構造物運搬用浮力体）、（２
）・・・海洋構造物、（４）・・・レバー、（５）・・
・油圧シリンダ、（６）・・・切換弁。
以 上
特許出願人 日立造船 株式会社
外４名
第１図The drawings show an embodiment of the present invention, and FIG. 1 is a front view of the offshore structure and the upper part of the jacket during purge at 1 o'clock, and FIG. 2 is a hydraulic circuit diagram of the installation device for a large offshore structure. (1) Purge (buoyant body for transporting marine structures), (2
)...Marine structure, (4)...Lever, (5)...
・Hydraulic cylinder, (6)...Switching valve. Patent applicants: Hitachi Zosen, Ltd., and 4 others Figure 1
Claims (1)
支持用レバーとレバー起倒用油圧シリンダが設けられ、
これらの油圧シリンダが１つの切換弁または同時に作動
する複数の切換弁に介して油圧源に接続されている大型
海洋構造物の据付装置。A floating body for transporting marine structures is equipped with a plurality of levers for supporting marine structures that can be raised and lowered, and a hydraulic cylinder for raising and lowering the levers.
An installation device for large offshore structures in which these hydraulic cylinders are connected to a hydraulic power source via one switching valve or a plurality of switching valves operating simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59053258A JPS60195217A (en) | 1984-03-19 | 1984-03-19 | Installer for large-size marine structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59053258A JPS60195217A (en) | 1984-03-19 | 1984-03-19 | Installer for large-size marine structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60195217A true JPS60195217A (en) | 1985-10-03 |
Family
ID=12937752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59053258A Pending JPS60195217A (en) | 1984-03-19 | 1984-03-19 | Installer for large-size marine structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60195217A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3508412A1 (en) * | 2018-01-04 | 2019-07-10 | Robert Bosch GmbH | Topside lifting device, topside lifting arrangement, vessel comprising the topside lifting arrangement, and method of lifting or lowering a topside |
| US11035091B1 (en) * | 2020-03-04 | 2021-06-15 | Powerchina Huadong Engineering Corporation Limited | Transportation device for offshore platforms and method for installing the same |
-
1984
- 1984-03-19 JP JP59053258A patent/JPS60195217A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3508412A1 (en) * | 2018-01-04 | 2019-07-10 | Robert Bosch GmbH | Topside lifting device, topside lifting arrangement, vessel comprising the topside lifting arrangement, and method of lifting or lowering a topside |
| US11035091B1 (en) * | 2020-03-04 | 2021-06-15 | Powerchina Huadong Engineering Corporation Limited | Transportation device for offshore platforms and method for installing the same |
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