JPS60208513A - Installation of tower type marine structure - Google Patents
Installation of tower type marine structureInfo
- Publication number
- JPS60208513A JPS60208513A JP6436984A JP6436984A JPS60208513A JP S60208513 A JPS60208513 A JP S60208513A JP 6436984 A JP6436984 A JP 6436984A JP 6436984 A JP6436984 A JP 6436984A JP S60208513 A JPS60208513 A JP S60208513A
- Authority
- JP
- Japan
- Prior art keywords
- structure unit
- guide
- units
- unit
- foundation structure
- 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
- E02B2017/0039—Methods for placing the offshore 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】
旦
産業上の利用分野
この発明は、下端が海底に固定され、上端が海面よりも
上方ｉ突出した塔状海洋構造物の据付方法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to a method for installing a tower-shaped marine structure whose lower end is fixed to the seabed and whose upper end projects above the sea level.
従来技術
従来の塔状海洋構造物は、陸上で組立てられた後ラウン
チング・パージで据付海域まで輸送され、ここでラウン
チング・パージから海中に投下されてその下端部が海底
に固定されていた。Prior Art Conventional tower-shaped offshore structures are assembled on land and then transported to the installation sea area using a launching purge, where they are dropped into the sea through the launching purge and their lower ends are fixed to the seabed.
しかしながら、水深の大きい海域に据付ける場、＆に、
、よ１．遺物、ヵ、な、父型化ｔ、え、陸上での組立作
業およびラウンチング・パージへの積載作業が面倒にな
るという問題があった。しかも、組立てのさいに高所作
業が必要となるため、危険をともなうという問題があっ
た。また、工場の面積、ラウンチング・パージへの積載
用クレーンの能力およびラウンチング・パージの積載能
力に限界があるため、従来の据付方法では塔状海洋構造
物の大きさに限界があり、水深の大きい海域用の構造物
を据付けることができなかった。However, when installing in a deep sea area,
, Yo1. There was a problem in that the assembly work on land and the loading work on the launch purge became troublesome. Furthermore, there is a problem in that assembly requires work at high places, which is dangerous. In addition, due to limitations in the area of the factory, the capacity of the cranes used to load the launching purge, and the loading capacity of the launching purge, conventional installation methods have limitations on the size of tower-like offshore structures, and are difficult to install in large water depths. It was not possible to install structures for marine areas.
発明の目的
この発明は、上記の問題を解決した合理的な据付方法を
提供することを目的とする。OBJECT OF THE INVENTION The purpose of the present invention is to provide a rational installation method that solves the above problems.
発明の構成
この発明による塔状海洋構造物の据付方法は、下端が海
底に固定され、上端が海面よりも上方に突出した塔状海
洋構造物を据付ける方法であって、注排水自在な浮力体
を備えているとともに周辺部に複数のガイド挿通部を有
する基礎構造物ユニットと、注排水自在な浮力体を備え
ており、かつ基礎構造物ユニット上に層状にｉｉ重ねら
れる複数の構造物ユニットと、複数の柱状ガイドとを別
個につくること、基礎構造物ユニット、構造物ユニット
およびガイドを据付海域まで海上輸送し、基礎構造物ユ
ニットおよび構造物ユニットヂを海面に浮かべた状態に
すること、基礎構造物ユニットの浮力体に海水バラスト
を注水してこれを海底に着底させること、着”底した基
礎構造物ユニットのガイド挿通部にガイドを挿通させて
海底に打設し、基礎構造物ユニットを固定すること、す
べての構造物ユニットの浮力体に海水バラストを注水し
、ガイドに案内させながら沈めていき、基礎構造物ユニ
ット上に層状に積重ねること、ならびに基礎構造物ユニ
ットとその上に載った構造物ユニット、および上下に隣
り合う構造物ユニットどうしを連結固定することを含む
ものである。Composition of the Invention The method of installing a tower-shaped marine structure according to the present invention is a method of installing a tower-shaped marine structure whose lower end is fixed to the seabed and whose upper end projects above the sea surface, and has a buoyancy that allows free pouring of water. A basic structure unit having a body and having a plurality of guide insertion parts in the peripheral part, and a plurality of structure units including a buoyant body capable of freely pouring water, and which are stacked in layers on the basic structure unit. and a plurality of columnar guides, transporting the foundation structure unit, structure unit, and guide by sea to the installation sea area, and leaving the foundation structure unit and structure unit floating on the sea surface; Injecting seawater ballast into the buoyant body of the structure unit and letting it land on the seabed; inserting the guide into the guide insertion part of the foundation structure unit that has landed on the bottom and driving it into the seabed; The buoyancy bodies of all structure units are injected with seawater ballast, guided by guides as they sink, and the buoyancy bodies of all structure units are stacked in layers on top of the foundation structure units. This includes connecting and fixing the mounted structural units and vertically adjacent structural units to each other.
実施例と作用
この発明の据付方法は、第１図に示すような塔状海洋構
造物（１）を据付ける方法である。Embodiments and Operations The installation method of the present invention is a method for installing a tower-shaped marine structure (1) as shown in FIG.
塔状海洋構造物（１）は、下端が海底に固定され、上端
が海面よりも上方に突出させられたものであり、海上石
油基地等に用いられる。塔状海洋構造物（１）は、最下
位に位置する基礎構造物ユニット（２）と、基礎構造物
ユニット（２）上に層状に積重ねられる複数の構造物ユ
ニット（３）とを備えている。基礎構造物ユニット（２
）および構造物ユニット（３）は平面から見て矩形で、
それぞれその４角部に筒状ガイド挿通部（４）（５）が
設けられている。ガイド挿通部（４）（５）に柱状ガイ
ド（６）が挿通され、このガイド（６）が海底に打設さ
れている。また、基礎構造物ユニット（２）および構造
物ユニット（３）は、それぞれ注排水自在な密閉状パイ
プ（７）（８）により組立てられており、このパイプ（
７）（８）が浮力体となっている。また、基礎構造物ユ
ニット（２）の上面に凹所（２ａ）が設けられ、構造物
ユニット（３）のうち下端のものの下面に凹所（２ａ）
に嵌合する凸部（３ａ）が設けられて、凹所（２ａ）と
凸部（３ａ）とが互いに嵌合している。The tower-shaped offshore structure (1) has a lower end fixed to the seabed and an upper end projected above the sea surface, and is used for offshore oil bases and the like. The tower-shaped marine structure (1) includes a foundation structure unit (2) located at the lowest level and a plurality of structure units (3) stacked in layers on the foundation structure unit (2). . Foundation structure unit (2
) and the structural unit (3) are rectangular in plan view,
Cylindrical guide insertion portions (4) and (5) are provided at each of the four corners. A columnar guide (6) is inserted into the guide insertion portions (4) and (5), and this guide (6) is driven into the seabed. In addition, the basic structure unit (2) and the structure unit (3) are assembled using sealed pipes (7) and (8) that can be freely filled and drained, respectively.
7) (8) is a buoyant body. Further, a recess (2a) is provided on the upper surface of the basic structure unit (2), and a recess (2a) is provided on the lower surface of the lower end of the structure unit (3).
A convex portion (3a) that fits into the recess (2a) and the convex portion (3a) are provided to fit into each other.
このような塔状海洋構造物を据付ける方法を、第２図か
ら第６図を参照しながら説明する。A method of installing such a tower-shaped offshore structure will be explained with reference to FIGS. 2 to 6.
まず、基礎構造物ユニット（２）、構造物ユニット（３
）および柱状ガイド（６）を別個につくっておく。そし
て、基礎構造物ユニット（２）および構造物ユニット（
３）を横一列に並べて半潜水式パージ（９）上に積載し
、据付海域まで海上輸送する（第２図参照）。これと同
時に構造物ユニット用柱状ガイド（６）もバージ（図示
略）に積載して据付海域まで海上輸送する。ガイド（６
）を注排水自在なパイプ状としておき、またはガイド（
６）に浮力タンクを取付けて、海面に浮かべて輸送して
もよい。First, the basic structure unit (2), the structure unit (3)
) and the columnar guide (6) are made separately. Then, the basic structure unit (2) and the structure unit (
3) are lined up horizontally and loaded onto the semi-submersible purge (9) and transported by sea to the installation area (see Figure 2). At the same time, the structural unit columnar guide (6) is also loaded onto a barge (not shown) and transported by sea to the installation sea area. Guide (6
) in the form of a pipe that can be freely filled or drained, or a guide (
6) A buoyancy tank may be attached to the vessel and the vessel may be transported floating on the sea surface.
据付海域に到着した後、半潜水式パージ（９）を潜水さ
けてパイプ（７）（８）に作用する浮ツノにより両ユニ
ット（２）（３）を海面に浮かべ（第３図参照）、パー
ジ（９）を離脱させる。After arriving at the installation area, the semi-submersible purge (9) is submerged and both units (2) and (3) are floated on the sea surface using floating horns that act on the pipes (7) and (8) (see Figure 3). Remove the purge (9).
つぎに、基礎構造物ユニット（２）のパイプ（７）内に
海水バラストを注水し、常に水平状態を保つように姿勢
を制御しながら沈めて海底に着底させた後、ガイド挿通
部（４）に柱状ガイド（６）を挿通させて海底に打設し
、基礎構造物ユニット（２）を海底に固定する（第４図
参照）。その後、海上クレーン（１ｏ）によって凸部（
３ａ）を有する構造物ユニット（３）のガイド挿通部（
５）がガイド（６）の真上にくるように構造物ユニット
（３）を移動させる（第５図参照）。この状態でパイプ
（８）に海水バラストを注水してガイド（６）を挿通部
（５）に挿合させる（第６図参照）。第５図および第６
図に示すのと同様な操作をすべての構造物ユニツねる。Next, seawater ballast is injected into the pipe (7) of the foundation structure unit (2), and the body is lowered to the bottom by controlling its attitude so as to maintain a horizontal state at all times. After that, the guide insertion part (4) ) through which the columnar guide (6) is inserted and cast into the seabed, and the foundation structure unit (2) is fixed to the seabed (see Figure 4). After that, the convex part (
3a) of the structure unit (3) having the guide insertion portion (
5) Move the structural unit (3) so that it is directly above the guide (6) (see FIG. 5). In this state, seawater ballast is poured into the pipe (8) and the guide (6) is inserted into the insertion portion (5) (see Fig. 6). Figures 5 and 6
Unite all structures by performing operations similar to those shown in the figure.
最後に、基礎構造物ユニツ１〜（２）とその上に載った
ｔＩ４造物ユニット（３）、および隣り合う構造物ユニ
ット（３）どうしを連結固定することにより、第１図に
示す構造物（１）が据付けられる。この連結固定は、付
き合わせるべきパイプ（７）（８）の端部にフランジを
設けておき、フランジどうしをボルト、ナツトで連結す
ることによって行なう。Finally, the structure shown in FIG. 1) is installed. This connection and fixation is performed by providing flanges at the ends of the pipes (7) and (8) to be brought together, and connecting the flanges to each other with bolts and nuts.
油井が枯れた時などは、据付のさいと逆の操作で簡単に
構造物（１）を撤去することができる。When an oil well dries up, the structure (1) can be easily removed by reversing the installation procedure.
このような塔状海洋構造物（１）において、上端に作業
台を設ける必要があるときには、陸上で最上位の構造物
ユニットをつくるさいに、これと一体内に設けておき、
この作業台上に石油掘削等に必要な種々の装置を具備せ
しめておくのがよい。こうしておけば、作業台を構造物
の上端に載せるための大型の海上クレーンを必要とせず
、しかも作業台上に種々の装置を載置するための面倒な
作業が省ける。最上位の構造物ユニットに作業台を一体
的に設けておく場合には、構造物ユニット自身の重量を
支えるための浮力体のほかに、作業台の重量を支える浮
力体を具備させておく。In such a tower-shaped offshore structure (1), if it is necessary to provide a workbench at the upper end, when building the highest structure unit on land, it is provided in one piece with this,
It is preferable to equip this workbench with various devices necessary for oil drilling and the like. This eliminates the need for a large marine crane to place the workbench on the top of the structure, and also eliminates the troublesome work of placing various devices on the workbench. When a workbench is integrally provided in the highest structure unit, a buoyancy body for supporting the weight of the workbench is provided in addition to a buoyancy body for supporting the weight of the structure unit itself.
上記実施例においては、基礎構造物ユニットおよび構造
物ユニットの浮力体は、両ユニットを構成するパイプを
密閉状にするとともに注排水自在とすることによって構
成されているが、これに代えて浮力タンクを設けておい
てもよい。In the above embodiment, the buoyant bodies of the foundation structure unit and the structure unit are constructed by making the pipes constituting both units airtight and allowing free water injection, but instead of this, a buoyancy tank may be provided.
が、これに代えて浮力体に作用する浮力により各ユニッ
トを海面に浮かべておき、船で据付海域まで引張って行
ってもよい。さらに、上記実施例においては、構造物ユ
ニットおよび構造物ユニットのガイド挿通部として筒状
のものが用いられているが、これに限るものではない。However, instead of this, each unit may be floated on the sea surface by the buoyant force acting on the buoyant body, and then pulled by a ship to the installation sea area. Further, in the above embodiments, a cylindrical structure unit and a guide insertion portion of the structure unit are used, but the structure unit is not limited to this.
発明の効果
この発明の据付方法によれば、基礎構造物ユニット、構
造物ユニットおよびガイドを別個につくるから、工場の
大きさを大きくしたり、クレーン等の設備の能力を大き
くする必要はなく、しかも組立を容易に行なえる。しか
も工場内での高所作業の必要がなくなり、危険が避けら
れる。また、複数の部分に分割してつくり、これを分割
状態で据付海域まで輸送し、ここで組立てて塔状海洋構
造物を据付けるのであるから、大水深の海域にも塔状海
洋構造物を据付けることができる。しかも、輸送および
組立て作業が容易になる。また、パイルが強度部材とな
るため、基礎構造物ユニツ、トおよび構造物ユニット友
における強度部材の数踏減少させることができ、各ユニ
ットの軽量化が可能となる。また、基礎構造物ユニット
および構造物ユニットに浮力体が備えられているので、
据付海域で用いる海上クレーン船の能力が小さくてもよ
い。さらに、撤去作業も容易に行なえる。Effects of the Invention According to the installation method of the present invention, since the foundation structure unit, structure unit, and guide are manufactured separately, there is no need to increase the size of the factory or increase the capacity of equipment such as cranes. Moreover, it is easy to assemble. What's more, there is no need to work at heights within the factory, thereby avoiding danger. In addition, because the tower-shaped offshore structure is constructed by dividing it into multiple parts, transporting the divided parts to the installation sea area, and assembling them here to install the tower-shaped offshore structure, it is possible to construct the tower-shaped offshore structure even in deep sea areas. Can be installed. Furthermore, transportation and assembly operations are facilitated. In addition, since the piles serve as the strength members, the number of strength members in the basic structure units and the structural units can be reduced by several steps, making it possible to reduce the weight of each unit. In addition, since the foundation structure unit and the structure unit are equipped with buoyancy bodies,
The capacity of the marine crane vessel used in the installation area may be small. Furthermore, removal work can be easily performed.
第１図はこの発明の方法により据付けられた塔状海洋構
造物の正面図、第２図から第６＠ｌはこの発明による脚
の据付方法を工程順に示す正面図である。
（１）・・・塔状海洋構造物、（２）・・・基礎構造物
ユニット、（３）・・・構造物ユニット、（４）・・・
ガイド挿通部、（６）・・・柱状ガイド、（７）（８）
・・・注排水自在な密閉状パイプ。
以上FIG. 1 is a front view of a tower-like marine structure installed by the method of the present invention, and FIGS. 2 to 6 are front views showing the method of installing legs according to the present invention in the order of steps. (1)...Tower-shaped offshore structure, (2)...Foundation structure unit, (3)...Structure unit, (4)...
Guide insertion part, (6)...Column guide, (7) (8)
...A sealed pipe that can be freely filled and drained. that's all
Claims (1)
た塔状海洋構造物を据付ける方法であって、 注排水自在な浮力体を備えているとともに周辺部に複数
のガイド挿通部を有する基礎構造物ユニットと、注排水
自在な浮力体を備えており、かつ基礎構造物ユニット上
に層状に積重ねられる複数の構造物ユニットと、複数の
柱状ガイドとを別個につくること、 基礎構造物ユニット、構造物ユニットおよびガイドを据
付海域まで海上輸送し、基礎構造物ユニットおよび構造
物ユニットを海面に浮かべた状態にすること、 基礎構造物ユニットの浮力体に海水バラストを注水して
これを海底に着底させること、着底した基礎構造物ユニ
ットのガイド挿通部にガイドを挿通させて海底に打設し
、基礎構造物ユニットを固定すること、 すべての構造物ユニットの浮力体に海水バラストを注水
し、ガイドに案内させながら沈めていき、基礎構造物ユ
ニット上に層状に積重ねること、 ならびに基礎構造物ユニットとその上に載った構造物ユ
ニット、および上下に隣り合う構造物ユニットどうしを
連結固定することを含む塔状海洋構造物の据付方法。[Claims] A method of installing a tower-shaped marine structure whose lower end is fixed to the seabed and whose upper end protrudes above the sea surface, which is equipped with a buoyant body that can be freely filled with water, and has a plurality of floating structures around the periphery. A foundation structure unit having a guide insertion portion, a plurality of structure units that are equipped with a buoyant body capable of freely pouring water and are stacked in layers on the foundation structure unit, and a plurality of columnar guides are separately manufactured. Transporting the foundation structure unit, structure unit, and guide by sea to the installation sea area, leaving the foundation structure unit and structure unit floating on the sea surface, and injecting seawater ballast into the buoyant body of the foundation structure unit. The guide is inserted into the guide insertion part of the basic structure unit that has landed on the bottom, and the guide is inserted into the seabed to fix the basic structure unit. The buoyancy of all structure units is Filling the body with seawater ballast and letting it sink while being guided by a guide, stacking it in layers on the foundation structure unit, as well as the foundation structure unit, the structure unit resting on it, and the structures adjacent above and below. A method for installing a tower-shaped marine structure, including connecting and fixing physical units.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6436984A JPS60208513A (en) | 1984-03-30 | 1984-03-30 | Installation of tower type marine structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6436984A JPS60208513A (en) | 1984-03-30 | 1984-03-30 | Installation of tower type marine structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60208513A true JPS60208513A (en) | 1985-10-21 |
Family
ID=13256291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6436984A Pending JPS60208513A (en) | 1984-03-30 | 1984-03-30 | Installation of tower type marine structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60208513A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4740107A (en) * | 1986-12-01 | 1988-04-26 | Barnett & Casbarian, Inc. | Method and apparatus for protecting a shallow-water well |
| US4907657A (en) * | 1986-12-01 | 1990-03-13 | Shell Offshore, Inc. | Method for protecting a shallow water well |
| US5012875A (en) * | 1986-12-01 | 1991-05-07 | Barnett & Casbarian, Inc. | Method and apparatus for protecting a shallow-water well |
-
1984
- 1984-03-30 JP JP6436984A patent/JPS60208513A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4740107A (en) * | 1986-12-01 | 1988-04-26 | Barnett & Casbarian, Inc. | Method and apparatus for protecting a shallow-water well |
| US4907657A (en) * | 1986-12-01 | 1990-03-13 | Shell Offshore, Inc. | Method for protecting a shallow water well |
| US5012875A (en) * | 1986-12-01 | 1991-05-07 | Barnett & Casbarian, Inc. | Method and apparatus for protecting a shallow-water well |
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