JPS6260532B2 - - Google Patents
Info
- Publication number
- JPS6260532B2 JPS6260532B2 JP11718281A JP11718281A JPS6260532B2 JP S6260532 B2 JPS6260532 B2 JP S6260532B2 JP 11718281 A JP11718281 A JP 11718281A JP 11718281 A JP11718281 A JP 11718281A JP S6260532 B2 JPS6260532 B2 JP S6260532B2
- Authority
- JP
- Japan
- Prior art keywords
- dock
- workbench
- legs
- leg
- work platform
- 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.)
- Expired
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 238000007796 conventional method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
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
- E02B17/02—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
- E02B2017/0056—Platforms with supporting legs
- E02B2017/006—Platforms with supporting legs with lattice style supporting legs
-
- 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
- E02B2017/0056—Platforms with supporting legs
- E02B2017/0073—Details of sea bottom engaging footing
- E02B2017/0082—Spudcans, skirts or extended feet
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
Description
【発明の詳細な説明】
本発明は、高揚程を有する着地昇降式海上作業
台の組立方法に関するものである。更に詳しく
は、浮力を有する作業台の脚部（支柱）の組立に
際しこの作業台およびこれを支持する脚部の下部
構造を組立て、次いでこの作業台を組立ている船
渠内に注水してこの作業台を支持している船渠の
底部に掛る重量を軽減する方法を提供するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for assembling a landing lift type offshore work platform having a high lift. More specifically, when assembling the legs (pillars) of a buoyant workbench, the workbench and the lower structure of the legs that support it are assembled, and then water is poured into the dock where the workbench is being assembled to remove the workbench. The present invention provides a method of reducing the weight on the bottom of a dock supporting a ship.
近来現有石油資源の枯渇から、大陸棚等におい
てこの資源の開発が活溌になされているが、この
場合海上作業台が使用されている。この海上作業
台には種々の形式のものが使用されているがその
一つに複数本の脚部を着地させこの脚部にそつて
作業台を昇降させる着地昇降式海上作業台があ
る。 In recent years, due to the depletion of existing oil resources, the development of these resources on the continental shelf has become active, and in this case offshore work platforms are used. Various types of offshore work platforms are used, one of which is an elevating type offshore work platform on which a plurality of legs land and the work platform is raised and lowered along the legs.
ところで、かかる作業台は、一般的に支柱の長
さが80ｍ以上で重量が7000トンにも及ぶ大重量物
であるために、その製作には種々の問題があり、
その一つに脚部の組立方法がある。 By the way, such a workbench is generally a heavy object with a support length of 80m or more and a weight of 7000 tons, so there are various problems in manufacturing it.
One of them is the method of assembling the legs.
即ち、この種の作業台は、昇降装置を有する作
業台と脚部とを別々に製作した後、この脚部を昇
降装置に遊嵌させるのが一般的であるが、前述し
たようにこの脚部は80ｍにも及ぶため脚部を作業
台に遊嵌させる作業には90ｍ以上の揚程を有する
クレーンを必要とする。しかしながら、かかる大
型のクレーンを新設すると莫大な費用を必要とす
ることとなるために脚部を現有クレーンの能力に
応じて５ないし20ｍ程度の単位脚体して製作し、
この単位脚体を継ぎ足して脚部を組み立てる方法
が一般的である。 That is, in this type of workbench, the workbench with the lifting device and the legs are generally manufactured separately, and then the legs are fitted loosely into the lifting device. Since the length of the legs is 80m, a crane with a lifting height of 90m or more is required to loosely fit the legs onto the workbench. However, installing such a large crane would require a huge amount of cost, so the legs are manufactured in units of about 5 to 20 meters, depending on the capacity of the existing crane.
A common method is to assemble the legs by adding these unit legs together.
更に別の問題としては前記のように作業台の重
量が7000トンであるためにその全重量を船渠の底
部で支持することが困難である。そのために作業
台の組立に際しては、前記底部に局部的な荷重が
作用しないように脚部の下端部に設けられたフー
チングの下方に多数の盤木や特殊な支持物を設け
なければならなかつた。そのために作業台の完成
度に応じて盤木を追加したり配列を変えなければ
ならなかつた。 Another problem is that, as mentioned above, the weight of the workbench is 7000 tons, so it is difficult to support the entire weight at the bottom of the dock. Therefore, when assembling the workbench, it was necessary to install a large number of boards and special supports below the footings provided at the lower ends of the legs to prevent local loads from acting on the bottom. . For this reason, it was necessary to add boards or change the arrangement depending on the degree of completion of the workbench.
本発明は、前記従来の着地昇降式海上作業台の
組立方法の欠点を改良するために得られたもので
あつて、船渠中において作業台と脚部の下部構造
を盤木によつて支持させながら組立てたのち、船
渠内に注水し、作業台を浮力によつて支持しなが
ら脚部の上部構造を組み立てることを特徴とする
ものである。 The present invention was obtained in order to improve the drawbacks of the conventional method of assembling a landing-type lifting type offshore work platform, and the present invention is to improve the shortcomings of the above-mentioned conventional method of assembling a landing-type lifting type offshore work platform, and the present invention is to support the work platform and the lower structure of the legs by boards in a dock. After assembling, water is poured into the dock, and the upper structure of the legs is assembled while supporting the workbench by buoyancy.
次に図面を参照しながら本発明の実施例につい
て説明する。 Next, embodiments of the present invention will be described with reference to the drawings.
第１図は船渠内において海上作業台の下部構造
を組み立てる状況を示す図で、船渠Ａ内に昇降装
置２を有する作業台１を盤木３によつて支持し、
下端部にフーチング４を有する単位脚体５−１を
前記昇降装置２に遊嵌させ、船渠側に設けられた
クレーン６により第２の単位脚体５−２を吊り上
げて前記単位脚体５−１上に継ぎ足していく。以
降第２、第３の単位脚体を上方に継ぎ足してい
き、クレーン６の揚程に達すると盤木３及び粒状
の支持物８を支持している船渠Ａの底部にはかな
りの重量が作用することとなる。 FIG. 1 is a diagram showing the situation in which the lower structure of a marine work platform is assembled in a dock A. A work platform 1 having a lifting device 2 is supported by a board 3 in a dock A.
A unit leg 5-1 having a footing 4 at the lower end is loosely fitted into the lifting device 2, and a crane 6 provided on the dock side lifts the second unit leg 5-2 to lift the unit leg 5-1. Add on top of 1. Thereafter, the second and third unit legs are added upward, and when the lifting height of the crane 6 is reached, a considerable weight acts on the bottom of the dock A that supports the board 3 and the granular supports 8. It happens.
そこで第２図の如く、船渠Ａ内に注水し、作業
台１の重量をその浮力によつてある程度もたせ
る。なお、作業台１と脚部等の全重量を船渠の底
部に支持させるばあいには、盤木３等を十分に補
強する必要がある。 Therefore, as shown in Fig. 2, water is poured into the dock A, and the weight of the workbench 1 is supported to some extent by its buoyancy. In addition, when supporting the entire weight of the workbench 1, legs, etc. on the bottom of the dock, it is necessary to sufficiently reinforce the board 3 and the like.
前記のようにして脚部の下方部分の組立が終る
と、船渠側に設けられた水平引き込み式塔型クレ
ーン７によつて単位脚体５−３を吊り上げてすで
に組立の終了している脚部の上方に継ぎ足してい
く。 When the lower part of the leg is assembled as described above, the unit leg 5-3 is lifted up by the horizontal retractable tower crane 7 installed on the dock side, and the leg that has already been assembled is lifted up by the horizontal retractable tower crane 7 installed on the dock side. Continue to add to the top.
一本の脚部５の組立が終了すると別の脚部の組
立が必要である。その場合には、第３図のように
船渠Ａ内に更に注水して作業台１を浮上させてこ
れをゆつくり回転（回頭）させる。 Once one leg 5 has been assembled, another leg must be assembled. In that case, as shown in FIG. 3, water is further injected into the dock A to float the workbench 1 and slowly rotate (turn) it.
次に、第４図の如く、クレーン７の作業範囲の
下方に脚部５−ｍを位置させこれに単位脚体５−
ｎを接続する。 Next, as shown in FIG. 4, the leg 5-m is positioned below the working range of the crane 7, and the unit leg 5-m is
Connect n.
以下同様にして次の脚部の上部に単位脚体５−
ｎを接続していく。 Similarly, attach the unit leg 5- to the top of the next leg.
Connect n.
前記したように本発明は、作業台１とこれを支
持する脚部５の下部構造を船渠Ａ内において組立
てたのち、この船渠Ａ内に注水してその浮力によ
つて作業台１の重量を軽減させ、しかるのち脚部
５の上部構造を組み立てることに特徴がある。 As described above, the present invention involves assembling the lower structure of the workbench 1 and the legs 5 that support it in the dock A, and then injecting water into the dock A to reduce the weight of the workbench 1 by its buoyancy. The feature is that the upper structure of the leg part 5 is assembled afterwards.
従つて、本発明によれば船渠内に特別に補強す
る必要がないとともに、盤木の配列を作業の進行
に従つて変える必要がない。又、一本の脚部と組
立てたのち他の脚部を組み立てる際には、船渠内
に注水して作業台を浮上させてこれを回転させれ
ばよくかなり長い脚部を水平引き込み式塔型クレ
ーンによつて簡単に組み立てることができる。 Therefore, according to the present invention, there is no need for special reinforcement within the dock, and there is no need to change the arrangement of the planks as the work progresses. Also, when assembling one leg and then assembling the other, all you have to do is pour water into the dock, float the workbench, and rotate it. Can be easily assembled by crane.
本発明は前記実施例の如く、門型クレーンと水
平引き込み塔型クレーンの両者を使用して作業台
を組も立てる際に有効に実施することができる
が、本発面はこれのみに限定されるのではなく、
要するに、作業台を船渠内に於て浮上させてその
重量を軽減させて組み立てるものであればいかな
る組立方法を採用してもよい。 Although the present invention can be effectively implemented when assembling a work platform using both a gate type crane and a horizontal pull-in tower type crane as in the above embodiment, the present invention is not limited to this. Rather than
In short, any assembly method may be used as long as the work platform is floated in the dock to reduce its weight.
図面は本発明の実施例を示すもので、第１図は
船渠内において作業台と脚部の下部構造を組み立
てる状況を示すものである。第２図は、脚部の上
部構造を組み立てる状況を示すものであり、第３
図は作業台を船渠内において回転させ状況を示す
ものであり、第４図は前記により回転した作業台
の別の脚部を組み立てる状況を示すものである。
１……作業台、２……昇降装置、３……盤木、
４……フーチング、５……脚部、５−１，５−
２，５−３……単位脚体、６，７……クレーン。
The drawings show an embodiment of the present invention, and FIG. 1 shows a situation in which a work platform and a lower structure of legs are assembled in a dock. Figure 2 shows the situation in which the upper structure of the leg is assembled;
The figure shows the situation in which the workbench is rotated in the dock, and FIG. 4 shows the situation in which another leg of the rotated workbench is assembled as described above. 1... Workbench, 2... Lifting device, 3... Board,
4... Footing, 5... Leg, 5-1, 5-
2, 5-3... unit leg body, 6, 7... crane.
Claims (1)
半完成品を盤木によつて支持した状態において、
前記船渠内に注水して前記作業台の重量を軽減し
た後前記脚部の上部を完成させることを特徴とす
る着地昇降式海上作業台の組立方法。1. With the semi-finished work platform and lower structure of the legs supported by boards in the dock,
A method for assembling a landing lift type offshore work platform, characterized in that the upper part of the leg section is completed after reducing the weight of the work platform by injecting water into the dock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11718281A JPS5820813A (en) | 1981-07-28 | 1981-07-28 | Fabrication of landing and elevating type offshore working platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11718281A JPS5820813A (en) | 1981-07-28 | 1981-07-28 | Fabrication of landing and elevating type offshore working platform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5820813A JPS5820813A (en) | 1983-02-07 |
| JPS6260532B2 true JPS6260532B2 (en) | 1987-12-16 |
Family
ID=14705442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11718281A Granted JPS5820813A (en) | 1981-07-28 | 1981-07-28 | Fabrication of landing and elevating type offshore working platform |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5820813A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10811341B2 (en) | 2009-01-05 | 2020-10-20 | Amkor Technology Singapore Holding Pte Ltd. | Semiconductor device with through-mold via |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1040731B1 (en) * | 2014-03-18 | 2015-11-26 | Ale Heavylift B V | Method and constructions for placing an extension part on a jack-up leg. |
-
1981
- 1981-07-28 JP JP11718281A patent/JPS5820813A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10811341B2 (en) | 2009-01-05 | 2020-10-20 | Amkor Technology Singapore Holding Pte Ltd. | Semiconductor device with through-mold via |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5820813A (en) | 1983-02-07 |
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