KR20140051531A - Structure of offshore structure, manufacturing and constructing method thereof - Google Patents

Structure of offshore structure, manufacturing and constructing method thereof Download PDF

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Publication number
KR20140051531A
KR20140051531A KR1020120117620A KR20120117620A KR20140051531A KR 20140051531 A KR20140051531 A KR 20140051531A KR 1020120117620 A KR1020120117620 A KR 1020120117620A KR 20120117620 A KR20120117620 A KR 20120117620A KR 20140051531 A KR20140051531 A KR 20140051531A
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South Korea
Prior art keywords
conical body
support structure
ring
marine
concrete
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KR1020120117620A
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Korean (ko)
Inventor
김기두
Original Assignee
건국대학교 산학협력단
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Priority to KR1020120117620A priority Critical patent/KR20140051531A/en
Publication of KR20140051531A publication Critical patent/KR20140051531A/en

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    • 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
    • E02B17/025—Reinforced concrete structures
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/32—Foundations for special purposes
    • E02D27/52—Submerged foundations, i.e. submerged in open water
    • E02D27/525—Submerged foundations, i.e. submerged in open water using elements penetrating the underwater ground
    • 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
    • E02B2017/0056—Platforms with supporting legs
    • E02B2017/0073—Details of sea bottom engaging footing

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Foundations (AREA)
  • Revetment (AREA)

Abstract

The present invention relates to a cone-shaped body having a cavity formed therein and having a steel tube for supporting a facility provided on the sea, and being disposed upright on the sea floor; The cone-shaped body is integrally formed with the cone-shaped body so as to maintain a state in which the cone-shaped body is disposed upright on the seabed surface and is seated on the seabed surface. The center of the cone- A support having a plurality of file mounts coupled with a plurality of files pushed in; By providing the marine support structure including the marine support structure, the pile mounting portion of the marine support structure can be positioned on the same circumference, so that the supporting force for supporting the marine supporting facilities can be uniformly applied, It is possible to prevent the marine support structure from being damaged at the time of fixing the marine support structure to the seabed ground.

Description

TECHNICAL FIELD [0001] The present invention relates to a marine support structure, a manufacturing method thereof, and a method of constructing the same,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction field, and more particularly, to a marine support structure, a manufacturing method thereof, and a construction method.

In general, marine support structures are structures that are installed on the ground in the ocean to install various objects such as offshore wind power structures.

These marine support structures are always subjected to external forces due to waves, tides, winds, etc., and thus, these marine support structures are often formed of a concrete material that is most resistant to external forces and resistant to corrosion.

It is most widely used to fix a marine support structure with a concrete material to the ocean floor, to insert a pile of steel material into one side of the marine support structure, In fact.

In order to fix such a marine support structure to the ground, since the cross-sectional centers of the plurality of steel piles hitting the seabed ground are not located on the same circumference, an eccentric load is applied to one side of the marine support structure, Such as an offshore wind power generation structure that is seated on the wind turbine, can not be stably supported.

In order to install such a marine support structure in the ocean, the marine support structure is formed of a concrete material, and the piles for fixing the marine support structure to the ground of the ocean are formed of steel, so that the piles are inserted into one side of the marine support structure There is a problem in that it is not easy to install the support structure in the ocean due to frequent breakage due to impact applied to the support structure at the time of hitting.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to improve the structural stability by allowing the pile mounting portion of the ocean supporting structure to be positioned on the same circumference, And to provide a marine support structure capable of preventing the marine support structure from being damaged at the time of fixing the marine support structure to the seabed ground, and a manufacturing method thereof.

In order to solve the above-described problems, the present invention provides a water treatment system comprising: a conical body having a hollow formed therein and having a steel tube for supporting a facility installed on the sea, The cone-shaped body is integrally formed with the cone-shaped body so as to maintain a state in which the cone-shaped body is disposed upright on the seabed surface and is seated on the seabed surface. The center of the cone- A support having a plurality of file mounts coupled with a plurality of files pushed in; The proposed marine support structure.

The support portion includes a ring-shaped beam formed in a ring shape and having the pile mounting portion on a circumference, a frame portion formed of a linear beam disposed between the pile mounting portion and the pile mounting portion so as to be located inside the ring-shaped beam, And a concrete pouring part integrally formed with the conical body and formed by pouring concrete on the outer surface of the linear beam.

The straight line can be radially arranged from the center of the ring-shaped beam toward the pile mounting portion.

In addition, the straight line view may be formed so as to connect the pile mounting portion and the pile mounting portion to form a polygonal shape as a whole.

In addition, a reinforcement member formed in the same shape as the rectilinear beam may be provided on the upper surface of the conical body on which the steel tube is installed.

A plurality of partition walls may be formed in the conical body in a direction parallel to the sea floor so that the hollow formed inside the conical body can be selectively divided along the radial direction of the conical body.

In addition, a seawater inflow hole may be formed at one side of the plate surface of the partition to allow the seawater to flow into the divided hollow after the conical body is disposed on the sea floor.

In order to solve the above-described problems, the present invention provides a method of manufacturing a rectangular frame, comprising the steps of: preparing a ring-shaped ring-shaped beam provided with a file mounting portion; and a frame portion formed of the ring-shaped beam and the ring- A second step of providing a mold on an outer surface of the frame part and casting concrete to form a concrete pouring part; A third step of pouring concrete on the upper surface of the concrete pouring part integrally with the concrete pouring part to form a conical body; A fourth step of attaching a forced tube to the upper surface of the conical body; The present invention provides a method of manufacturing a marine support structure.

In order to solve the above-described problems, the present invention provides a method for installing a marine support structure, comprising: A second step of inserting and attaching a pile mounting part of a marine support structure to a pile of the ocean floor; Selectively injecting seawater into the hollow of the marine support structure divided by the septum; The present invention also provides a method of constructing a marine support structure.

The present invention allows the pile mounting portion of a marine support structure to be positioned on the same circumference, thereby improving the structural stability of the marine support structure by supporting the marine support structure uniformly, There is an effect that the damage of the marine support structure during the operation can be prevented.

In addition, buoyancy is generated by providing partition walls for forming divided hollows in the inside of the marine support structure, so that a marine heavy equipment cost is not required in marine transportation to the installation point, thereby saving the cost of marine crane leasing.

1 is a perspective view illustrating a structure in which a marine support structure according to an embodiment of the present invention is installed on a sea bed,
FIG. 2 is a longitudinal sectional view showing the structure of a marine support structure installed on the seabed of FIG. 1,
FIG. 3 is a plan view showing the structure of the marine support structure of FIG. 1 viewed from above,
4 is a perspective view illustrating a structure of a frame portion included in a marine support structure according to an embodiment of the present invention,
FIG. 5 is a perspective view showing a structure in which concrete is placed outside the frame portion of FIG. 4,
6 is a perspective view showing the structure of a frame portion built in a marine support structure according to another embodiment of the present invention,
FIG. 7 is a perspective view showing a structure in which concrete is placed outside the frame portion of FIG. 6,
8 is a perspective view showing a structure of a frame part embedded in a marine support structure according to another embodiment of the present invention,
FIG. 9 is a perspective view showing a structure in which concrete is placed outside the frame portion of FIG. 8,
10 is a flowchart sequentially illustrating a method of manufacturing a marine support structure according to the present invention,
11 is a flowchart sequentially illustrating a construction method of a marine support structure according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing a structure in which a marine support structure according to an embodiment of the present invention is installed on the sea floor, FIG. 2 is a longitudinal sectional view showing the structure of a marine support structure installed on the sea floor in FIG. 1, 4 is a perspective view showing the structure of a frame portion built in a marine support structure according to an embodiment of the present invention, and FIG. 5 is a perspective view showing the structure of the frame of FIG. 4, 6 is a perspective view showing a structure of a frame part built in a marine support structure according to another embodiment of the present invention, and Fig. 7 is a perspective view showing a structure of a frame part of Fig. 6 8 is a perspective view showing a structure of a frame portion built in a marine support structure according to another embodiment of the present invention, and Fig. 9 is a perspective view showing the structure of the frame 10 is a flowchart sequentially illustrating a method of manufacturing a supporting structure for a marine structure according to the present invention, and FIG. 11 is a view illustrating a method of sequentially applying a method for constructing a marine supporting structure according to the present invention Fig.

As shown in these drawings, a marine support structure according to the present invention includes a hollow structure having a hollow tube 110 formed therein, a steel tube 120 supporting a facility provided on the sea, The body 100 and the conical body 100 are integrally formed with the conical body 100 and are seated on the bottom surface of the conical body 100 so that the conical body 100 can be maintained upright on the sea floor, And a support part 200 having a plurality of pile mounting parts 210, which are provided on the circumference of the pile to be positioned at the center thereof and are coupled to a plurality of piles 1 mounted on the bottom of the sea floor.

The conical body 100 is formed with an upper surface and a hollow 110 formed on the upper surface thereof so as to allow various objects to be installed thereon.

The conical body 100 is a conical member formed by curing concrete laid after pouring concrete into a form provided on the upper side of a support part 200 to be described later, and supports a facility installed in the ocean.

The conical body 100 has a conical shape in which the load applied by a facility installed in the ocean is uniformly dispersed throughout the lower surface of the conical body 100 so as to stably support the facility, .

A separate steel tube 120 is attached to the upper surface of the conical body 100 and a part of the steel tube 120 is exposed to the sea while the steel tube 120 is in a water- The facilities are supported and supported.

The steel tube 120 may be formed of a steel material, but it may be made of steel composite or concrete, which is a mixture of concrete and steel, instead of a steel material. Of course, the steel tube 120 may be manufactured by selecting a material according to characteristics of a facility to be supported desirable.

The inner circumferential surface of the cone-shaped body 100 is formed with an outer circumferential surface to support the steel tube 120 attached to the upper surface of the cone-shaped body 100 and to improve the resistance to compression of the cone- It is effective that the reinforcing member 130 is provided.

The reinforcing member 130 is preferably formed in the same shape as that of the rectilinear beam 222 to be described later. However, the reinforcing member 130 is not limited to any one shape but may be configured to reinforce the supporting force of the upper surface of the conical body 100 Any configuration may be acceptable.

The reinforcing member 130 may extend radially from the center of the upper surface of the conical body 100 to the inner surface of the conical body 100 or may be formed to interconnect a plurality of points of the upper inner surface of the conical body 100, As shown in FIG.

A partition wall 140 is formed at one side of the hollow 110 of the conical body 100 so as to divide the inner space of the conical body 100 upward and downward.

By controlling the amount of seawater flowing into the interior of the conical body 100 by the partition wall 140, the degree of buoyancy acting on the conical body 100 can be controlled, thereby making it possible to more easily install the offshore structure .

As a result, buoyancy can be generated, and it is possible to move to an offshore installation point without excessive marine heavy equipment, and the weight due to buoyancy can be reduced, so that it can be installed as a small floating crane, thereby reducing the construction cost.

The supporting portion 200 is formed in a ring shape and includes a ring shaped beam 221 having a pile mounting portion 210 on a circumference and a pile portion 221 between the pile mounting portion 210 and the pile mounting portion 210 And a concrete pouring part 222 formed integrally with the conical body 100. The concrete pouring part 222 is formed by pouring concrete on the outer surfaces of the ring-like beams 221 and the straight beams 222, (230).

The frame part 220 is a member constituting a skeleton for forming the support part 200. The frame part 220 includes a ring shaped beam 221 having a file mounting part 210, And a rectilinear linear beam 222 provided between the mounting portion 210 and the pile mounting portion 210.

The eccentricity does not act on the annular beam 221 by the file mounting portion 210 so that the center of the file coupled with the file mounting portion 210 is positioned inside or outside the ring- It is preferable to position the ring-shaped beam 221 on the circumference of the ring-shaped beam 221 without using the ring-

The rectilinear beam 222 can be arranged radially from the center of the ring-shaped beam 221 toward the pile mounting part 210. [

That is, when the number of the file mounting portions 210 is three, the angle formed by the linear beam 222 and the linear beam 222 is 120 degrees. When there are four file mounting portions 210, And an angle formed by the second electrode 222 and the second electrode 222 becomes 90 DEG, resulting in a '+' shape.

The rectilinear beam 222 may be formed to have a polygonal shape by being disposed between the pile mounting part 210 and the pile mounting part 210 and being arranged to connect the pile mounting part 210 and the pile mounting part 210.

That is, the overall shape of the rectilinear beam 222 is triangular when there are three file mounts 210, and the rectangle 222 is rectangular when the file mounts 210 are four. .

The concrete pouring part 230 is formed by forming concrete on the outer side of the frame part 220 and then pouring the concrete into the pouring mold to cure the poured concrete and is formed integrally with the conical body 100 .

In the case of the ring shaped beam 221 and the straight beam 222 of the frame part 220, it is preferable that a form is formed in the interior of the concrete placement part 230. In the case of the file installation part 210, 210 are exposed to the outside, the concrete pouring portion 230 is preferably formed only on the outer surface of the pile mounting portion 210.

In the case of the file installation part 210, when the concrete installation part 230 is formed by placing the concrete up to the inner surface of the file installation part 210, The diameter of the pile may be reduced and coupling with the pile may be impossible. Therefore, the pile of concrete 230 should be formed only on the outer surface of the pile mounting part 210.

A method for manufacturing a marine support structure having such a configuration is as follows.

First of all, a frame portion 220 composed of a ring-shaped ring-shaped beam 221 provided with a file mounting portion 210 and a linear beam 222 provided between the ring-shaped beam 221 and the ring- Thereby constituting a skeleton capable of forming the support portion 200.

The ring-shaped beam 221 and the linear beam 222 should be integrally formed by a method such as welding, and the structure in which the linear beam 222 is disposed may be a structure that can improve the structural stability of the ring- Any configuration is acceptable.

When the frame part 220 is completed, a mold is formed on the periphery of the frame part 220, concrete is poured into the mold, and then the concrete is cured to form a concrete pour part 230.

When the concrete part 230 is formed and the support part 200 is completed, a mold for forming the conical body 100 is provided on the upper surface of the concrete installation part 230 of the support part 200.

After the concrete is poured into the mold and cured, the conical body 100 is formed integrally with the concrete casting part 230, and then the forced tube 120 having a predetermined height is attached to the upper surface of the conical body 100 Thereby completing the fabrication of the ocean support structure.

A method of constructing a marine support structure that has been manufactured by the above-described process on the sea floor is as follows.

A plurality of files are mounted on a seabed surface for installing a facility such as an offshore wind power generator so that a part of the file protrudes to the outside of the sea floor.

Thereafter, the marine support structure is lowered to the seafloor using a device such as a marine crane so that the piles are inserted into the pile mounting part 210 of the marine support structure, and then they are mutually fixed by welding or the like.

Here, when the marine support structure is lowered to the seabed surface, the sea water inflow hole 141 formed in the partition wall 140 is made to be buoyant by lowering the marine support structure in the closed state, so that the load applied to the marine crane is reduced .

After the marine support structure is seated on the seafloor and fixedly connected to the pile, the closed seawater inflow hole 141 is opened to allow a certain amount of seawater to flow into the inside of the marine support structure, So that the construction of the marine support structure is completed.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It is to be understood that both the technical idea and the technical spirit of the invention are included in the scope of the present invention.

100: conical body 110: hollow
120: steel tube 130: reinforcing member
140: Bulkhead 141: Seawater inflow hole
200: support part 210:
220: frame part 221: ring-shaped beam
222: straight beam 230: concrete pouring part

Claims (9)

A conical body (100) having a hollow (110) formed therein and having a steel tube (120) for supporting a facility provided on the sea and being disposed upright on the sea floor;
The conical body 100 is integrally formed with the conical body 100 so as to maintain the state where the conical body 100 is disposed upright on the sea floor and is seated on the bottom surface of the conical body 100, (200) having a plurality of pile mounting parts (210) which are provided at the center and are coupled to a plurality of pile-mounted files;
Wherein the support structure comprises at least one of: The method according to claim 1,
The support part (200)
A ring shaped beam 221 formed in a ring shape and having the file mounting portion 210 on a circumference and a ring shaped beam 221 placed between the file mounting portion 210 and the file mounting portion 210 so as to be positioned inside the ring shaped beam 221 And a concrete pouring part 230 formed integrally with the conical body 100. The concrete pouring part 222 is formed by pouring concrete on the outer surfaces of the ring-shaped beam 221 and the straight beam 222, (230). ≪ / RTI > 3. The method of claim 2,
Wherein the linear beam (222) is disposed radially from the center of the ring-shaped beam (221) toward the pile mounting part (210). 3. The method of claim 2,
Wherein the rectilinear beam (222) is arranged to connect the pile mounting part (210) and the pile mounting part (210) so as to have a polygonal shape as a whole. 3. The method of claim 2,
Wherein a reinforcing member (130) having the same shape as the rectilinear beam (222) is provided on the upper surface of the conical body (100) on which the steel tube (120) is installed. The method according to claim 1,
In order to selectively divide the hollow 110 formed in the conical body 100 along the radial direction of the conical body 100, the conical body 100 is formed in a direction parallel to the sea floor And a plurality of partition walls (140) are formed. The method according to claim 6,
The seawater inflow hole 141 is formed at one side of the plate surface of the partition wall 140 so as to allow the conical body 100 to be introduced into the divided hollows 110 after being disposed on the sea floor. Marine support structures. 8. A method for manufacturing a marine support structure according to any one of claims 1 to 7,
A first step of fabricating a ring-shaped ring-shaped beam provided with a file mounting portion and a linear portion provided between the ring-shaped beam and the ring-shaped beam;
A second step of providing a mold on an outer surface of the frame part and casting concrete to form a concrete pouring part;
A third step of pouring concrete on the upper surface of the concrete pouring part integrally with the concrete pouring part to form a conical body;
A fourth step of attaching a forced tube to the upper surface of the conical body;
Wherein the method comprises the steps of: 8. A method of constructing a marine support structure according to any one of claims 1 to 7,
A first step of piling a plurality of files on a seabed surface to which a marine support structure is to be installed;
A second step of inserting and attaching a pile mounting part of a marine support structure to a pile of the ocean floor;
Selectively injecting seawater into the hollow of the marine support structure divided by the septum;
Wherein the method comprises the steps of:
KR1020120117620A 2012-10-23 2012-10-23 Structure of offshore structure, manufacturing and constructing method thereof KR20140051531A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160026533A (en) * 2014-09-01 2016-03-09 건국대학교 산학협력단 Offshore multi-piled concrete foundation using transition pieces and the construction method therefor
CN106516021A (en) * 2016-11-17 2017-03-22 中交第航务工程局有限公司 Self-propelled carrying and installing all-in-one ship for underwater tunnel immersed tubes
CN106628018A (en) * 2016-11-17 2017-05-10 中交第航务工程局有限公司 Self-propelled large component transportation and installation integrated boat and construction process thereof
CN107882058A (en) * 2017-10-26 2018-04-06 河海大学 The suction barrel base and its delamination pour slurry compacted soil layer method of a kind of protection against erosion
US10836459B2 (en) 2016-11-17 2020-11-17 Cccc First Harbor Engineering Co., Ltd. Self-propelled integrated ship for transporting and installing immersed tubes of underwater tunnel and construction process
KR20210064809A (en) * 2019-11-26 2021-06-03 한국해양과학기술원 Multiple bulkhead hollow underwater foundation

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160026533A (en) * 2014-09-01 2016-03-09 건국대학교 산학협력단 Offshore multi-piled concrete foundation using transition pieces and the construction method therefor
CN106516021A (en) * 2016-11-17 2017-03-22 中交第航务工程局有限公司 Self-propelled carrying and installing all-in-one ship for underwater tunnel immersed tubes
CN106628018A (en) * 2016-11-17 2017-05-10 中交第航务工程局有限公司 Self-propelled large component transportation and installation integrated boat and construction process thereof
US10836459B2 (en) 2016-11-17 2020-11-17 Cccc First Harbor Engineering Co., Ltd. Self-propelled integrated ship for transporting and installing immersed tubes of underwater tunnel and construction process
CN107882058A (en) * 2017-10-26 2018-04-06 河海大学 The suction barrel base and its delamination pour slurry compacted soil layer method of a kind of protection against erosion
KR20210064809A (en) * 2019-11-26 2021-06-03 한국해양과학기술원 Multiple bulkhead hollow underwater foundation
KR20210104011A (en) * 2019-11-26 2021-08-24 한국해양과학기술원 Multiple bulkhead hollow underwater foundation

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