KR20160024111A - Hybrid support structure for marine wind power generation and construction method thereof - Google Patents

Abstract

The present invention relates to a hybrid support structure for offshore wind power generation, and more particularly, to a jacket type support structure comprising an upright structure of an upper structure, an intermediate structure, and a lower structure, A tower installation part for fixing and installing an upper tower of the offshore wind power generation structure; An expandable support member for supporting the jacket-type support member from below and including a cross support frame made of a cross-linking structure to enhance the supporting force and to provide structural stability; A ground fixing file connected to the lower side of the expandable support portion and buried in the seabed ground; , It is possible to greatly enhance the durability and structural stability for supporting and supporting the offshore wind power generation structure and to prevent the offshore wind power generation from being easily transmitted from the influence of external force due to marine environment (waves, algae, etc.) The present invention relates to a hybrid support structure for a hybrid vehicle.

Description

TECHNICAL FIELD [0001] The present invention relates to a hybrid support structure for offshore wind power generation,

The present invention relates to a support structure for offshore wind power generation and a method of constructing the same, and more particularly, to a support structure for an offshore wind power generation in which a wind power generation structure is fixedly installed and stably supported on the sea, It is possible to minimize the punching and fatigue breakage due to the load transfer from the wind power generation structure through the combined structure, and to improve the external resistance and conduction resistance of the waves and algae at sea, Structure and method of construction thereof.

Generally, wind power generation uses electricity to generate electricity using wind, and it is renewable energy using nature. Depending on installation location, it can be divided into land use and marine use. In recent years, The installation of wind turbines for wind turbines is on the rise.

In addition, as shown in the example shown in Fig. 1, the size of marine wind power generation is larger than that of land wind power generation for large capacity generation.

In this way, since the offshore wind turbine, which has recently been installed, is installed on the sea, due to the reduction of the obstacles due to the decrease of obstacles, the wind turbine and the change of the wind speed according to the height or direction are small, It is possible to maintain high power generation by 1.5 ~ 2 times due to low fatigue load. In the case of offshore wind power generation, since it is installed at a distance of about 15 km from the coast, problems such as noise caused by the enlargement of wind turbine, And the wind turbine installed on the sea can produce excellent scenery, and it is expected from the point that it is popular as a sightseeing tour course as well as electric power production.

In addition, it is required that the supporting structure of the sea is installed more strongly than the structure of the terrestrial environment. Such a sea supporting structure is not affected by the seepage of the submarine ground which is relatively soft ground, the influence of waves, And a structure capable of stably supporting wind turbines and structures including a blade and a nacelle (hereinafter, referred to as a 'wind turbine structure').

That is, the wind power generation at sea is composed of a structure including a wind power generation structure and a supporting structure for stably supporting the structure.

Here, as in the example shown in FIG. 1, the support structure has been proposed so far as a monophasic type 20, a tripod type 30, a floating type 40, a caisson type and a jacket type .

However, conventionally used supporting structures for offshore wind power generation are affected by external forces such as waves, algae and wind along with the loads received from the wind power generation structures, and there have been difficulties in stably supporting the wind power generation structures at sea.

In addition, the conventional support structure has a problem that punching and fatigue breakage occurs due to a load transmitted from a wind power generation structure having a weight of 500 tons or more, and distortion such as warpage occurs. There is a problem in that it is not free from the influence of external force such as algae and wind and is turned over.

Accordingly, development of a durable support structure capable of more stably supporting and supporting an offshore wind power generation structure is demanded.

On the other hand, Korean Patent Laid-Open No. 10-2013-0047950 of the prior art document discloses an upper support structure for mounting a facility for wind power generation on an upper part thereof; An intermediate support structure connected to a lower portion of the upper support structure and having a plurality of hollow guide members in the form of a jacket structure, the hollow guide members being hollow on the outside of the jacket structure; And a lower support structure composed of a plurality of hollow lower support members fitted to the hollow guide member and fixed to the sea floor, thereby reducing the installation work time of the wind turbine installed on the sea The support of an offshore wind turbine capable of securing the connection accuracy between the lower support structure and the intermediate support structure installed on the sea floor and the installation position of the offshore wind turbine less affected by the level of the flattening operation of the sea floor. And suggests and describes the technical structure of the structure.

However, as described above, the conventional patent literature has limitations in terms of stability and durability that can withstand the influence of the external force due to the marine environment as well as the load of the offshore wind power generation structure. The present invention is not limited to the support structure for offshore wind power generation in the present invention.

KR 10-2011-0047950 A1 (Published on 2013.05.09.)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the related art as described above, and it is an object of the present invention to provide a punching and fatigue fracture due to a load transfer from a wind power generation structure through a jacket- The present invention provides a hybrid supporting structure for offshore wind power generation capable of minimizing the number of wind turbines and improving resistance and conduction resistance that can be firmly preserved from the influence of external forces due to marine environments (waves, algae, etc.) .

It is another object of the present invention to provide a hybrid support structure for offshore wind power generation capable of enhancing durability and stability for supporting and supporting due to eccentric inclination in a faulty ground of an offshore wind power generation structure, and a construction method thereof.

Another object of the present invention is to provide a hybrid support structure for offshore wind power generation that can improve workability and shorten the construction period and reduce the production cost by minimizing the amount of the structure, and a construction method thereof.

In order to achieve the above object, a hybrid supporting structure for offshore wind power generation according to the present invention is a supporting structure for an offshore wind power for fixing a wind power generation structure including an upper tower and a blade and a nacelle to the sea,

A jacket-type support unit comprising an upper structure, an intermediate structure and an upright connection of the lower structure, the jacket-type support being provided as a jacket-shaped vertical structure; A tower installation part for fixing and installing an upper tower of the offshore wind power generation structure; An expandable support member for supporting the jacket-type support member from below and including a cross support frame made of a cross-linking structure to enhance the supporting force and to provide structural stability; A ground fixing file connected to the lower side of the expandable support portion and buried in the seabed ground; And a control unit.

Here, the expandable support portion is a main frame for stably supporting the jacket-type support portion from below, a cruciform support frame horizontally arranged in a cruciform connection structure and arranged in a diagonal direction to the lower structure; An extended connection file which is vertically arranged in each of the four directions of the cross support frame in the downward direction and is used for connection with the ground fixing file; And the other end of the cross support frame is coupled to the upper side of the lower structure having the jacket type support portion and the support of the jacket type support portion is reinforced Supporting force reinforcement file; A truss structure coupled to the crisscross support frame and the extension connection file, the truss structure being disposed at a lower side of the crisscross support frame and arranged in a cross shape, and having a truss structure for supporting strength and structural stability; As shown in FIG.

Here, the superstructure includes four upper batch files spaced and vertically arranged in four directions to form a square structure; A truss-type connecting rod having a truss-like structure, the side connecting member connecting and holding the quadrangular structure by connecting the four upper arrangement files; As shown in FIG.

Here, the intermediate structure includes four intermediate batch files positioned in four directions and spaced and vertically arranged to form a square structure; A lower side link and a diagonal cross link connecting the four intermediate layout files to support and maintain the square structure; The first and second intermediate batch files are connected diagonally in a diagonal direction so as to connect and support two neighboring intermediate batch files and are arranged diagonally opposite to each other on the sides facing each other for enhancing the supporting force and for the structural stability Oblique connecting rod; As shown in FIG.

Here, the lower structure includes four lower arrangement files spaced and vertically arranged in four directions to form a square structure; A reinforcing link arranged diagonally or X-shaped in a diagonal direction to connect and support two adjacent lower layout files among the four lower layout files; As shown in FIG.

Here, the upper structure, the intermediate structure, and the lower structure may be assembled and connected using a joint can, which is a connecting member, to minimize punching and fatigue failure.

According to another aspect of the present invention, there is provided a method of constructing a hybrid support structure for offshore wind power generation, comprising the steps of: providing a support structure for an offshore wind turbine for fixing a wind power generation structure including an upper tower, In the construction method of the structure,

(A) integrally manufacturing onshore an offshore wind power support structure comprising a jacket type support comprising an upper structure, an intermediate structure and a lower structure, and an expandable support comprising a tower installation and a crisscross support frame; (B) shipping the support structure for offshore wind power generated in step (A) on a barge and transporting it to the installation site; (C) transferring the supporting structure for offshore wind power generation to the ocean floor using a marine crane; (D) embedding and fixing the ground fixing pile for connecting with the expanding support of the supporting structure for offshore wind power generation, and installing it on the ground; (E) fixing a supporting structure for an offshore wind power generator to the sea by connecting an expandable support to a ground fixing file embedded and fixed in the ground; And a control unit.

Here, in the step (A), the upper structure, the intermediate structure, and the lower structure are connected and assembled using a joint can to constitute a jacket type supporting part, and the jacket type supporting part, the tower supporting part and the expandable supporting part are welded together and integrally manufactured. In the step (E), the support structure for offshore wind power generation may be connected to the ground fixing file through a concrete grouting operation.

According to the present invention, it is possible to greatly enhance the durability and structural stability for supporting and supporting an offshore wind power generating structure by providing a structure layout design in which an expandable structure is mutually coupled to a jacket (fixed) structure, It is possible to minimize the punching and fatigue breakage due to the transmission and to strengthen the strength that can be firmly conserved from the influence of the external force due to the marine environment (waves, algae, etc.) A beneficial effect that can improve the conduction resistance can be achieved.

INDUSTRIAL APPLICABILITY The present invention can improve the proof stress and shear stress such as being prevented from being easily warped or deformed from the load due to the eccentric inclination in the faulty ground of the offshore wind power generation structure and shortening the construction period by improving the workability and strengthening the durability and stability It is possible to achieve the usefulness of reducing the manufacturing cost by minimizing the amount of the structure.

1 is an exemplary view showing a conventional support structure for offshore wind power generation.
2 is a perspective view illustrating a support structure for offshore wind power generation according to an embodiment of the present invention.
3 is an exploded perspective view illustrating a support structure for offshore wind power generation according to an embodiment of the present invention.
FIG. 4 is a conceptual diagram showing a maritime installation state of a support structure for offshore wind power generation according to an embodiment of the present invention.
5 is a flowchart illustrating a method of constructing a support structure for offshore wind power generation 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.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. And therefore can be changed according to the intention and custom of the user and the operator. Therefore, it is appropriate to define the terms used in the present invention based on the contents throughout the present specification.

2 to 5 are views for explaining a support structure for offshore wind power generation according to an embodiment of the present invention and a construction method thereof.

2 to 4, the support structure for offshore wind power generation according to the present invention is a support structure for fixing a wind power generation structure 1 including an upper tower and a blade and a nose cell to the sea, A jacket type support 100, a tower installation part 200, an expandable support part 300, and a ground fixing file 400. The above jacket type is a type that is showing great interest in the present state of the offshore wind farm and can be installed at a depth of 20 to 80 m. This type applied in the UK "The Talisman Beatrice Wind Farm Demonstrator" It is supported by a jacketed structure and fixed to the sea floor by piles or piles. It is a large-scale offshore structure and has high installed reliability, and is adopted because it is economically advantageous when used in large-scale complex construction like monophasic type.

The jacket-type support unit 100 includes a jacket-type vertical structure formed by upright connection of the upper structure 110, the intermediate structure 120, and the lower structure 130.

At this time, the upper structure 110 is coupled to the tower installation part 200, and includes four upper arrangement files 111 arranged in four directions and spaced apart to form a square structure, And a truss-type connecting rod 112 having a truss-type structure as a side connecting member for connecting and supporting the quadrangular structure by connecting the four upper batch files 111.

In addition, the intermediate structure 120 may include four intermediate placement files 121 arranged in four directions and spaced apart to form a square structure, and vertically arranged four intermediate placement files 121 A lower side connecting rod 122 and a diagonal cross connecting rod 123 for supporting and holding the square structure, and a lower side connecting rod 122 for connecting and holding two adjacent intermediate batch files among the four intermediate batch files 121 in a diagonal direction A diagonal line and a diagonal line 124 may be formed to be diagonally opposite to each other on the side facing each other for the purpose of strengthening the supporting force and for the structural stability.

In order to minimize durability and stability, the oblique connecting rod 124 may be formed in an X-shaped arrangement rather than a diagonal arrangement.

Further, the lower structure 130 includes four lower arrangement files 131 spaced and vertically arranged in four directions to form a square structure, and two lower arrangement files 131, A reinforcing link 132 that can be diagonally diagonally placed or X-shaped to connect and support the batch file.

Each of the four batch files 111, 121 and 131 is arranged so as to form a quadrangular structure in accordance with the diagonal arrangement, and all of the four batch files 111, 121 and 131 are formed to have the same structure.

Here, a joint can 140, which is a connecting member, is used between the upper structure 110 and the intermediate structure 120 and the lower structure 130 and inserted into the respective batch files 111, 121 and 131 The joint can 140 can improve the ease of assembly, ease of operation, and workability, and can contribute to minimizing punching and fatigue fracture, among other things.

Then, it is preferable that the connection portion is formed so as to be able to maintain a more stable bonding property through a welding operation.

As described above, the jacket-type support unit 100 including the upper structure 110, the intermediate structure 120, and the lower structure 130 has a structure in which a jacket-type structure is arranged and a supporting structure is provided, It is possible to exhibit durability and bearing capacity capable of withstanding the load acting on the power generating structure and to minimize punching and fatigue failure due to the load transmission of the offshore wind power generating structure.

The tower installation part 200 is a flat block type structure for fixing and installing the upper tower of the offshore wind power generation structure, and is positioned on the upper side of the upper structure 110 of the jacket type support part 100 and is disposed and arranged.

At this time, a coupling hole (not shown) may be formed in the tower installation part 200 so that an upper tower as an offshore wind power generation structure can be fastened and fixed.

Here, the tower installation part 200 is coupled to the upper structure 110 by a welding operation.

The expandable support part 300 is a part connected to the lower side of the jacket type support part 100 and is a component for enhancing the overall durability and stability of the support structure by providing a lower expandable structure.

The expandable support portion 300 is an expandable structure for supporting the jacketed support portion 100 from below, and is structured to have a reinforced support structure and structural stability through a configuration including a crisscross support frame having a cross connection structure.

Specifically, the expandable support part 300 is a main frame for stably supporting the jacket-type support part 100 from the lower side, and is horizontally arranged in a cross-linking structure and a diaphragm- An enlarged connection file 320 vertically arranged in the lower direction at each of the four ends of the cross support frame 310 and used for connection with the ground fixing file 400, And the other end is coupled to the upper side surface of the lower structure 130 of the jacket type support portion 100 and is coupled to the upper side of the jacket type support portion 100, A supporting force reinforcing pile 330 for reinforcing the supporting force and a supporting force reinforcing pile 330 coupled to the cross supporting frame 310 and the expansion connecting pile 320 and positioned below the cross supporting frame 310 It arranged in a cross-shaped structure and can be configured as a truss structure 340 which is provided as a truss-like structure for bearing reinforcement and structural stability.

At this time, the expandable support portion 300 is engaged with the jacket-type support portion 100 by a welding operation.

The extended support portion 300 including the cruciform support frame 310 and the extension connection file 320, the support force reinforcing pile 330 and the truss structure 340 is formed by the lower extension of the cross- It is possible to provide the durability and the structural stability through the layout design and especially the support structure can be prevented from being transmitted from the load of the offshore wind power generating structure or the influence of the external force (wave or algae) You can.

In addition, it is noted that the cruciform support frame 310 may be formed of either an H beam or a round steel pipe considering the environmental conditions of the sea and the structural load of the structure.

The ground fixing file 400 is connected to the lower side of the expandable support part 300 and is buried in the seabed ground, and is a vertical arrangement file serving as a basis for fixing the support structure of the present invention to the sea.

In addition, most of the components of the jacket-type support portion 100 and the expandable support portion 300 are combined by the welding operation.

5 is a flowchart illustrating a method of constructing a support structure for offshore wind power generation according to an embodiment of the present invention.

Referring to FIG. 5, a method of constructing a support structure for offshore wind power generation according to an exemplary embodiment of the present invention will be described. Referring to FIG. 5, a jacket type support including an upper structure, an intermediate structure and a lower structure, (S110) having a support structure for an offshore wind power generator including an expandable support unit including an on-offshore wind turbine, and integrally manufacturing onshore;

At this time, it is preferable that the upper structure, the intermediate structure and the lower structure are connected and assembled by using a joint can to provide the jacket type support, and the jacket type support, the tower support and the expandable support are integrally formed through welding.

Here, the geotechnical fixation file is intended to facilitate the sea transportation and to be buried in the seabed, and will be excluded from the integral construction.

A step (S120) of loading the support structure for offshore wind power generation except for the ground fixing file, which is made in an integrated structure on the land, to the barge and transporting it to the installation site

(S 130) moving the supporting structure for offshore wind power generation to the seabed surface using the sea crane when the sea transportation is completed;

At this time, the connection state with the sea crane is maintained.

A step (S140) in which the ground fixing file excluded from the supporting structure for offshore wind power generation is mounted and embedded in a seabed ground and fixedly installed;

(S150) of placing a support structure for an offshore wind power generator on a seabed ground by fixing and installing the support structure of the offshore wind power generation supporting structure on the ground fixing file buried and fixed in the seabed ground.

Here, the connection of the ground fixing file and the expandable support of the support structure for offshore wind power generation is performed by performing the concrete grouting operation so that a more stable connection state can be maintained and the connection between the support structure and the ground fixing file can be strengthened .

Thereafter, an offshore wind power generation structure including an upper tower and a blade and a nacelle can be fixed on the sea by using a supporting structure for offshore wind power installed fixedly on the seabed ground.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, And can be variously modified and modified.

100: jacket type support 110: upper structure
111: upper batch file 112: truss-type linkage
120: intermediate structure 121: intermediate batch file
122: side linkage 123: diagonal cross linkage
124: diagonal connecting rod 130:
131: Lower batch file 132:
140: joint can 200: tower installation part
300: Expandable support 310: Cross support frame
320: extended connection file 330: supporting force reinforcement file
340: truss structure

Claims (8)

1. A support structure for offshore wind power for fixing a wind power generation structure including an upper tower and a blade and a nucelle to the sea,
A jacket-type support having an upper structure, an intermediate structure and an upright connection of the lower structure, the jacket-type support comprising a jacket-shaped vertical structure;
A tower installation part for fixing and installing an upper tower of the offshore wind power generation structure;
An expandable support member for supporting the jacket-type support member from below and including a cross support frame made of a cross-linking structure to enhance the supporting force and to provide structural stability;
A ground fixing file connected to the lower side of the expandable support portion and buried in the seabed ground; And a second support structure for supporting the wind turbine.
The method according to claim 1,
The expandable-
A main frame for stably supporting the jacket-type support portion from below, a cruciform support frame horizontally arranged in a cross-linked structure and arranged in a diagonal direction to the lower structure;
An extended connection file which is vertically arranged in each of the four directions of the cross support frame in the downward direction and is used for connection with the ground fixing file;
And the other end of the cross support frame is coupled to the upper side of the lower structure having the jacket type support portion and the support of the jacket type support portion is reinforced Supporting force reinforcement file;
A truss structure coupled to the crisscross support frame and the extension connection file, the truss structure being disposed at a lower side of the crisscross support frame and arranged in a cross shape, and having a truss structure for supporting strength and structural stability; And a second support structure for supporting the wind turbine.
The method according to claim 1,
The above-
Four top placement files spaced and vertically positioned in four directions to form a square structure;
A truss-type connecting rod having a truss-like structure, the side connecting member connecting and holding the quadrangular structure by connecting the four upper arrangement files; And a second support structure for supporting the wind turbine.
The method according to claim 1,
Wherein the intermediate structure comprises:
Four intermediate placement files spaced and vertically positioned in four directions to form a square structure;
A lower side link and a diagonal cross link connecting the four intermediate layout files to support and maintain the square structure;
The first and second intermediate batch files are connected diagonally in a diagonal direction so as to connect and support two neighboring intermediate batch files and are arranged diagonally opposite to each other on the sides facing each other for enhancing the supporting force and for the structural stability Oblique connecting rod; And a second support structure for supporting the wind turbine.
The method according to claim 1,
The under-
Four sub-layout files spaced and vertically positioned in four directions to form a square structure;
A reinforcing link arranged diagonally or X-shaped in a diagonal direction to connect and support two adjacent lower layout files among the four lower layout files; And a second support structure for supporting the wind turbine.
The method according to claim 1,
Wherein a joint can is used as a connection member between the upper structure and the intermediate structure and the lower structure so as to minimize punching and fatigue fracture.
1. A method of constructing a support structure for offshore wind power for fixing a wind power generation structure including an upper tower and a blade and a nose cell to the sea,
(A) integrally manufacturing onshore an offshore wind power support structure comprising a jacket type support comprising an upper structure, an intermediate structure and a lower structure, and an expandable support comprising a tower installation and a crisscross support frame;
(B) shipping the support structure for offshore wind power generated in step (A) on a barge and transporting it to the installation site;
(C) transferring the supporting structure for offshore wind power generation to the ocean floor using a marine crane;
(D) embedding and fixing the ground fixing pile for connecting with the expanding support of the supporting structure for offshore wind power generation, and installing it on the ground;
(E) fixing a supporting structure for an offshore wind power generator to the sea by connecting an expandable support to a ground fixing file embedded and fixed in the ground; And a second support structure for supporting the hybrid support structure for offshore wind power.
8. The method of claim 7,
In the step (A), the upper structure, the intermediate structure, and the lower structure are connected and assembled by using a joint can to constitute a jacket type supporting part, and welded between the jacket type supporting part, the tower supporting part and the expandable supporting part,
Wherein the supporting structure for offshore wind power generation is connected to the ground fixing file through the concrete grouting operation in the step (E).

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