KR101772508B1 - Structure for supporting offshore facility and method for structuring thereof - Google Patents
Structure for supporting offshore facility and method for structuring thereof Download PDFInfo
- Publication number
- KR101772508B1 KR101772508B1 KR1020150073891A KR20150073891A KR101772508B1 KR 101772508 B1 KR101772508 B1 KR 101772508B1 KR 1020150073891 A KR1020150073891 A KR 1020150073891A KR 20150073891 A KR20150073891 A KR 20150073891A KR 101772508 B1 KR101772508 B1 KR 101772508B1
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- KR
- South Korea
- Prior art keywords
- suction
- pile
- base
- lower portion
- piece
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Classifications
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- 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
- E02D27/42—Foundations for poles, masts or chimneys
- E02D27/425—Foundations for poles, masts or chimneys specially adapted for wind motors masts
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/01—Flat foundations
- E02D27/08—Reinforcements for flat foundations
-
- 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
Abstract
The present invention relates to a support structure for an offshore facility and a method of constructing the same. The support structure for an offshore facility installed on a seabed to support an offshore facility includes a base for supporting a lower portion of the offshore facility, And a pile portion which is inserted and installed in the suction portion. Therefore, according to the present invention, by inserting a pile portion into a plurality of suction portions provided in a base portion and integrally arranging the coupling structure so as to simplify the single structure, it is possible to shorten the attaching operation time of the suction portion and the pile portion to the sea floor, The present invention provides an effect of increasing the number
Description
BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a support structure for an offshore facility and a construction method thereof, and more particularly to a support structure for an offshore facility installed on the sea floor to support an offshore facility and a construction method thereof.
Large-scale storage facilities, and wind power generation facilities are being built on the sea. In order to install these marine structures on the sea, the bases supporting the marine structures should be fixed to the seabed.
Therefore, as a method of constructing a foundation file for constructing an offshore plant structure such as an offshore plant or an offshore wind power generation facility, there is a method in which a foundation file is installed in the same manner as a general land construction process, .
This method of construction of the foundation pile is not difficult to construct in deep sea, but it is extremely difficult to use this construction method in a deep sea. In addition, There is a disadvantage that it is consumed excessively.
A technique for improving the problem of the construction method is a construction method using a suction file. A construction method using a suction file is performed through the following process.
First, the lower part is opened and the upper part is provided with an underwater pump in the closed suction file. The underwater pump is installed on the upper part of the suction file, and the waterpipe is provided with a barge or a general ship. Here, A crane and a position measuring device for measuring the position of the water.
When a suction file is placed in a suitable position using a crane and then an underwater pump is operated to discharge the water inside the file, a pressure difference is generated between the water and the suction file. Due to this pressure difference, .
A plurality of suction files are installed on the seabed ground and a substructure of a marine facility such as a pillar is installed thereon. However, when the substructure of a marine facility having the conventional suction pile is installed on a soft ground, And the longitudinal support force may be weakened. In order to prevent this, there is a problem in that the construction of the ground is difficult and the construction cost is increased because the iron core or the ground improvement method must be performed on the rock bed.
On the other hand, as in the case of installing a wind power generation structure on the sea, a lateral load acts on the upper part of the suction pile base due to a strong wind or ocean current on the foundation of the suction pile as a foundation of the sea structure.
When the suction pile foundation is installed due to the lateral load, the slope of the suction pile foundation becomes large and the horizontal can not be maintained. As a result, there is a problem that stable construction of the marine structure becomes impossible.
Particularly, it is necessary to increase the lateral support force against lateral load acting on the foundation of the suction pile. However, in the conventional structure, since the pile has a structure in which a plurality of wings having a predetermined length are simply provided at regular intervals, Even if applied to the foundation of a suction pile, there is a problem that the lateral support force is weak and the horizontal adjustment of the subsea structure is difficult and the settlement support force is weak.
It is an object of the present invention to provide a support structure for an offshore facility which can shorten the time for attaching the suction portion and the pile portion to the sea floor and increase the fixation support force of the suction portion, The present invention is directed to providing a method for providing a service to a user.
It is still another object of the present invention to provide a support structure for an offshore facility and a method of constructing the same that can improve the joint holding force between the suction portion and the pile portion and increase the holding force of the pile portion.
Another object of the present invention is to provide a support structure for an offshore facility and a construction method thereof that can expand the cross-sectional area of the base portion downward to improve the structural rigidity of the base portion and increase the supporting and supporting force.
It is another object of the present invention to provide a support structure for an offshore facility and a method of constructing the same that can facilitate the coupling between the base portion and the suction portion and improve the coupling force between the base portion and the suction portion.
It is another object of the present invention to provide a support structure for an offshore facility and a method of constructing the same that can keep the contact area between the base portion and the suction portion intact while maintaining the base portion and the suction portion. For another purpose.
It is another object of the present invention to provide a support structure for an offshore facility and a construction method thereof, in which the horizontal state of the base portion can be adjusted at any time by adjusting the settling depths of the suction piles.
Another object of the present invention is to provide a support structure for an offshore facility which can maintain the structural rigidity of the base portion while maintaining the coupling force between the base portion and the suction portion, and a method of construction thereof.
Another object of the present invention is to provide a support structure for an ocean facility and a method of constructing the same that can fix the pile portion to a depth greater than the depth of the suction portion and fix the pile portion to the sea bed to improve the fixation support force of the pile portion.
In order to achieve the above object, the present invention provides a support structure for an offshore facility installed on a seafloor so as to support an offshore facility, comprising: a base portion supporting a lower portion of an offshore facility; A plurality of
The present invention further includes a grouting part (40) filled between the suction part (20) and the pile part (30).
The base part (10) of the present invention comprises: a coupling part (20) which is engaged with a lower part of a support to support a lower part of an offshore facility; An expanding piece formed to gradually expand from a lower portion of the coupling piece to an outer lower portion thereof; And a circumferential piece extending and projecting outwardly around a lower end of the expansion piece.
And a plurality of engagement holes are formed in the upper and lower portions so as to be coupled to the
The suction unit (20) of the present invention comprises: a suction file installed at a lower portion of the base unit (10); And a guide pawl extending from the top of the suction pawl and protruding from the top of the
The suction pail of the present invention is characterized in that a negative pressure injection port is formed to adjust the level by the negative pressure before the insertion of the pile part (30). The guide file of the present invention is formed to be smaller than the diameter of the suction file.
The
The present invention relates to a method of constructing a supporting structure for an offshore facility installed on the seafloor so as to support an offshore facility, comprising the steps of: installing a plurality of suction units (20) below the base (10); Installing the suction unit (20) through the sea floor; Applying a negative pressure to the suction part (20) to set it down; And inserting the pile part (30) into the suction part (20).
The present invention is further characterized by filling grouting portion (40) between the suction portion (20) and the pile portion (30). The
As described above, according to the present invention, by inserting a pile portion into a plurality of suction portions provided in a base portion and integrally arranging the coupling structure so as to simplify the single structure, it is possible to shorten the work time for attaching the suction portion and the pile portion to the sea floor And at the same time, the fixing capacity of the suction portion can be increased.
In addition, by filling the grouting portion between the suction portion and the pile portion, it is possible to improve the joint holding force between the suction portion and the pile portion, and to increase the holding force of the pile portion.
In addition, by forming an enlarged piece between the engaging piece and the peripheral piece of the base portion, the sectional area of the base portion is expanded downward to improve the structural rigidity of the base portion and increase the attaching and supporting force.
Further, by forming the plurality of engagement holes so as to vertically penetrate the suction portion along the periphery of the base portion, the coupling between the base portion and the suction portion can be facilitated and the coupling force between the base portion and the suction portion can be improved to provide.
Further, by forming the guide pawls on the upper portion of the suction pawl so that the upper end of the suction pawl protrudes to the upper portion of the base portion, the contact area between the base portion and the suction pawl remains unchanged, Thereby providing an effect of maintaining the supporting force.
Further, by providing a negative pressure injection port in each suction file, it is possible to control the horizontal state of the base part from time to time by adjusting the settling depth of the suction file to be different from each other.
Further, by forming the diameter of the guide pawl smaller than the diameter of the suction pawl, it is possible to maintain the structural rigidity of the base portion while maintaining the coupling force between the base portion and the suction portion.
In addition, since the file portion is formed of a steel pipe file having a length longer than the length of the suction portion, the pile portion is embedded in the deeper than the depth of the suction portion to fix the pile portion to the sea bed.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a supporting structure of an offshore facility according to an embodiment of the present invention; FIG.
2 is an enlarged view of a portion of a support structure of an offshore facility according to an embodiment of the present invention;
3 is a downward perspective view illustrating a support structure of an offshore facility according to an embodiment of the present invention;
4 is an upward perspective view illustrating a support structure of an offshore facility according to an embodiment of the present invention;
5 is a flow chart illustrating a method of constructing a support structure of an offshore facility according to an embodiment of the present invention.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
2 is a partially enlarged view of a supporting structure of an offshore facility according to an embodiment of the present invention. FIG. 3 is an enlarged view of the supporting structure of an offshore facility according to an embodiment of the present invention. 4 is a perspective view of a supporting structure of an offshore facility according to an embodiment of the present invention, and FIG. 5 is a perspective view illustrating a supporting structure of an offshore facility according to an embodiment of the present invention. Fig. 2 is a flow chart showing a method of constructing a support structure of an offshore facility.
1 to 4, the supporting structure of an offshore facility according to the present embodiment includes a
Various maritime facilities such as various offshore plant facilities for developing a marine mine or marine oil field supporting the lower part by installing a
The
The joining
The
The
The
The
It is preferable that a negative pressure injection port is formed at the upper end of the
The
The
Although the
The support structure of an offshore facility according to an embodiment of the present invention may further include a
The
At this time, in order to maintain the supporting force between the
Therefore, the present invention is characterized in that the
Hereinafter, a method of constructing a support structure of an offshore facility according to the present embodiment will be described in more detail with reference to the accompanying drawings.
As shown in FIGS. 1 and 5, the method for constructing the supporting structure of an offshore facility according to the present embodiment includes a suction part installation step S10, a suction part introduction step S20, a suction part settling step S30, Step S40 to construct a support structure of an offshore facility that is installed on the ocean floor to support the
The step of installing the suction part S10 is a step of installing a plurality of
The suction section penetration step S20 is a step of installing the
At this time, the depth of penetration of the
The suction sub-sedimentation step S30 is a step of submerging the submerged pressure to the
After the
The file section inserting step S40 is a step of inserting the
The method of constructing the supporting structure of the marine facility of the present embodiment may further include a grouting portion filling step (S50) of filling the
The grouting portion filling step S50 is a step of filling the filling member between the
In particular, since the size of the
As described above, according to the present invention, by inserting a pile portion into a plurality of suction portions provided on a base portion and integrally providing a coupling structure so as to simplify a single structure, it is possible to shorten the work time for attaching the suction portion and the pile portion to the sea floor And at the same time, the fixing capacity of the suction portion can be increased.
In addition, by filling the grouting portion between the suction portion and the pile portion, it is possible to improve the joint holding force between the suction portion and the pile portion, and to increase the holding force of the pile portion.
In addition, by forming an enlarged piece between the engaging piece and the peripheral piece of the base portion, the sectional area of the base portion is expanded downward to improve the structural rigidity of the base portion and increase the attaching and supporting force.
Further, by forming the plurality of engagement holes so as to vertically penetrate the suction portion along the periphery of the base portion, the coupling between the base portion and the suction portion can be facilitated and the coupling force between the base portion and the suction portion can be improved to provide.
Further, by forming the guide pawls on the upper portion of the suction pawl so that the upper end of the suction pawl protrudes to the upper portion of the base portion, the contact area between the base portion and the suction pawl remains unchanged, Thereby providing an effect of maintaining the supporting force.
Further, by providing a negative pressure injection port in each suction file, it is possible to control the horizontal state of the base part from time to time by adjusting the settling depth of the suction file to be different from each other.
Further, by forming the diameter of the guide pawl smaller than the diameter of the suction pawl, it is possible to maintain the structural rigidity of the base portion while maintaining the coupling force between the base portion and the suction portion.
In addition, since the file portion is formed of a steel pipe file having a length longer than the length of the suction portion, the pile portion is embedded in the deeper than the depth of the suction portion to fix the pile portion to the sea bed.
The present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. Therefore, the above embodiments are merely illustrative in all respects and should not be construed as limiting.
10: base portion 20: suction portion
30: file portion 40: grouting portion
Claims (11)
A base portion 10 for supporting a lower portion of an offshore facility;
A plurality of suction units 20 disposed around the outer periphery of the base unit 10 and formed on the seabed surface by negative pressure;
A pile portion 30 inserted into the suction portion 20; And
And a grouting part (40) filled between the suction part (20) and the pile part (30)
The base portion 10 includes: an engaging piece which is engaged with a lower portion of the strut to support a lower portion of an offshore facility; An expanding piece formed to gradually expand from a lower portion of the coupling piece to an outer lower portion thereof; And a circumferential piece extending and projecting outwardly around a lower end of the expansion piece,
A plurality of coupling holes are formed in the circumference of the circumferential portion so as to vertically penetrate the suction portions 20,
The suction unit 20 includes a suction file installed at a lower portion of the base unit 10; And a guide pawl extending from the top of the suction pawl and protruding from the top of the base pawl 10,
Wherein the guide pawls are formed to be smaller than the diameter of the suction pawls so as to be engaged with the coupling holes,
A ring-shaped inner space formed between the inner circumferential surface of the suction section 20 and the outer circumferential surface of the pile section 30 is provided with a ring- Wherein a plurality of supports are horizontally installed and spaced apart at equal intervals to maintain the support force.
Characterized in that the suction file is provided with a negative pressure inlet so as to adjust the level of the suction file by negative pressure before the insertion of the pile part (30).
Wherein the pile portion (30) is made of a steel pipe file formed to be longer than the length of the suction portion (20) so as to be buried deeper than the depth of burial of the suction portion (20).
Installing a plurality of suction portions (20) on a lower portion of the base portion (10);
Installing the suction unit (20) through the sea floor;
Applying a negative pressure to the suction part (20) to set it down;
Inserting the pile part (30) into the suction part (20); And
Filling the grouting part (40) between the suction part (20) and the pile part (30)
The base portion 10 includes: an engaging piece which is engaged with a lower portion of the strut to support a lower portion of an offshore facility; An expanding piece formed to gradually expand from a lower portion of the coupling piece to an outer lower portion thereof; And a circumferential piece extending and projecting outwardly around a lower end of the expansion piece,
A plurality of coupling holes are formed in the circumference of the circumferential portion so as to vertically penetrate the suction portions 20,
The suction unit 20 includes a suction file installed at a lower portion of the base unit 10; And a guide pawl extending from the top of the suction pawl and protruding from the top of the base pawl 10,
Wherein the guide pawls are formed to be smaller than the diameter of the suction pawls so as to be engaged with the coupling holes,
A ring-shaped inner space formed between the inner circumferential surface of the suction section 20 and the outer circumferential surface of the pile section 30 is provided with a ring- Wherein a plurality of supports are installed horizontally and spaced apart at equal intervals to maintain the support force.
Wherein the pile portion (30) is formed to be longer than the length of the suction portion (20) so as to be buried deeper than the depth of burial of the suction portion (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150073891A KR101772508B1 (en) | 2015-05-27 | 2015-05-27 | Structure for supporting offshore facility and method for structuring thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020150073891A KR101772508B1 (en) | 2015-05-27 | 2015-05-27 | Structure for supporting offshore facility and method for structuring thereof |
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| KR20160139283A KR20160139283A (en) | 2016-12-07 |
| KR101772508B1 true KR101772508B1 (en) | 2017-08-29 |
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| KR1020150073891A KR101772508B1 (en) | 2015-05-27 | 2015-05-27 | Structure for supporting offshore facility and method for structuring thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190057755A (en) * | 2017-11-20 | 2019-05-29 | 현대건설주식회사 | Gravity based-suction foundation hybrid type support structure and construction method thereof |
| KR20190098123A (en) * | 2017-11-20 | 2019-08-21 | 현대건설주식회사 | Gravity based-suction foundation hybrid type support structure and construction method thereof |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102207398B1 (en) * | 2018-10-29 | 2021-01-26 | 엘티삼보 주식회사 | Ground improvement method for offshore jacket structure construction and ground improvement method for offshore pile construction |
| CN110172998B (en) * | 2019-05-29 | 2021-01-08 | 浙江大学 | Combined suction anchor reinforced by grouting spiral anchor |
| CN110374131A (en) * | 2019-07-19 | 2019-10-25 | 浙江大学 | A kind of cylinder composite truss formula offshore wind turbine foundation and its construction technology |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101403455B1 (en) * | 2014-03-14 | 2014-06-03 | 한국건설기술연구원 | Underwater base structure for wind turbine tower, and constructing method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101794280B1 (en) | 2010-12-27 | 2017-11-07 | 재단법인 포항산업과학연구원 | Suction pile for rapid construction |
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2015
- 2015-05-27 KR KR1020150073891A patent/KR101772508B1/en active IP Right Grant
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101403455B1 (en) * | 2014-03-14 | 2014-06-03 | 한국건설기술연구원 | Underwater base structure for wind turbine tower, and constructing method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190057755A (en) * | 2017-11-20 | 2019-05-29 | 현대건설주식회사 | Gravity based-suction foundation hybrid type support structure and construction method thereof |
| KR20190098123A (en) * | 2017-11-20 | 2019-08-21 | 현대건설주식회사 | Gravity based-suction foundation hybrid type support structure and construction method thereof |
| KR102035664B1 (en) | 2017-11-20 | 2019-10-23 | 현대건설주식회사 | Gravity based-suction foundation hybrid type support structure and construction method thereof |
| KR102053219B1 (en) * | 2017-11-20 | 2019-12-06 | 현대건설주식회사 | Gravity based-suction foundation hybrid type support structure and construction method thereof |
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| Publication number | Publication date |
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| KR20160139283A (en) | 2016-12-07 |
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