KR102443891B1 - Jig assembly for interpenetration of marine monopile and the interpenetration method using this - Google Patents

Abstract

The present invention relates to a jig assembly for penetrating a monopile of a sea-bed and a monopole penetrating method using the same, comprising: a monopile having a lower end part which penetrates toward the sea-bed; and a penetration supporting unit including a main jig pipe detachably coupled to one of a plurality of monopiles penetrated into the sea-bed, and supporting a remaining monopile of the plurality of monopiles to be sequentially penetrated into the sea-bed. According to an embodiment of the present invention, an offshore structure using the monopile can be easily installed on the sea-bed.

Description

A jig assembly for monopile penetration of the seabed and a monopile penetration method using the same

The present invention relates to a jig assembly for monopile penetration of the seabed and a monopile penetration method using the same, and more particularly, to a monopile penetration of the seabed so that an offshore structure using a monopile can be easily installed on the seabed. It relates to a jig assembly and a monopile penetration method using the same.

When constructing an offshore wind power plant or offshore structure, an upper structure, for example, a monopile is widely used as a support structure for supporting an upper turbine in an offshore wind power plant.

Such monopile can be said to be a structure widely used in the field of supporting structures for offshore wind power structures or offshore structures.

In Europe, monopiles account for 75~80% of offshore wind power support structures, and these monopiles must secure sufficient resistance against axial force and moment according to turbine load, it will have to be fixed

Invented from the above point of view, there may be mentioned such as "Monopile type offshore wind turbine structure and its installation method" (hereinafter referred to as prior art) of Patent Registration No. 10-1549194.

The prior art is a lower body installed on the seabed, a connection part installed on the upper part of the lower body and connected to the tower part, a ring member provided on the outer peripheral surface of the lower body and positioned under the connection part to support the connection part, and the lower end is on the seabed It includes a plurality of support members rotatably coupled and the upper end is rotatably coupled to the side surface of the ring member, and a gap is provided between the lower body and the ring member to limit left/right shaking of the lower body and the connection part according to the water depth. It provides a monopile type offshore wind turbine structure formed in.

However, in the prior art, since both ends of the support member for supporting the connection have a structure that is rotatably coupled to the connection and the seabed, respectively, it is deformed and damaged due to corrosion over a long period of time in the rotationally connected portion. There was a fear of facing problems such as loss of balance and falling of the connection part due to the vibration and shock load caused by the waves.

Therefore, it is urgent to develop a device that can easily install an offshore structure using a monopile on the seabed, as well as ensure that the penetration and fixed state on the seabed can be reliably and firmly maintained.

Registered Patent No. 10-1549194

The present invention was invented to improve the above problems, and to provide a jig assembly for penetrating a monopile of the seabed that allows an offshore structure using a monopile to be easily installed on the seabed, and a monopile penetrating method using the same it is for

In order to achieve the above object, the present invention is a monopile (monopile) having a lower end penetrating toward the bottom of the sea; and a main jig pipe that is detachably coupled to one monopile intruded into the seabed among the plurality of monopiles, and a penetration support for supporting the remaining monopile of the plurality of monopiles to sequentially penetrate into the seabed. It will be possible to provide a jig assembly for monopile penetration of the seabed, characterized in that it includes a unit.

Here, the monopile includes a first tooth formed along the lower edge of the hollow monopile, an external penetrating thread formed in a spiral shape along the lower outer circumferential surface of the monopile, and the lower inner circumferential surface of the monopile An internal penetration thread formed in a spiral shape along An external support bucket having an inner peripheral surface facing the outer peripheral surface of the pile and having second teeth formed along the lower end edge, and an external support bucket mounted on the lower surface of the scour prevention cap and having an inner peripheral surface facing the outer peripheral surface of the monopile, the external support A central support bucket having an outer circumferential surface facing the inner circumferential surface of the bucket and having third teeth formed along the edge of the lower end, and a space between the outer circumferential surface of the monopile and the inner circumferential surface of the central support bucket disposed on the upper surface of the scour prevention cap and A first discharge valve communicating and discharging water, mud, and air generated when the monopile penetrates the seabed, and disposed on the upper surface of the scour prevention cap to support the outer peripheral surface of the central support bucket and the external support A second discharge valve communicating with the space between the inner circumferential surfaces of the bucket and discharging water, mud, and air generated in the process of the monopile penetrating into the seabed, and the monopile mounted on the outer circumferential surface of the monopile It communicates with the internal space and is disposed above the upper surface of the anti-scour cap, and further comprises a third discharge valve for discharging water, mud, and air generated while the monopile penetrates the seabed. do it with

At this time, the penetration support unit includes at least one auxiliary jig pipe connected to the main jig pipe, and a plurality of first main fluid cylinders radially disposed on the upper outer circumferential surface of the main jig pipe penetrating both upper and lower ends; A first main body equipped with a first main contact piece mounted on each of the plurality of first main fluid cylinders to expand and contract with fluid pressure, and a first main contact piece contacting the outer circumferential surface of one monopile penetrating into the seabed among the plurality of monopiles at the distal end A fixed rod, a plurality of second main fluid cylinders radially disposed on the outer peripheral surface of the lower side of the main jig pipe passing through the upper and lower ends, respectively, are mounted on the plurality of second main fluid cylinders, and expand and contract with fluid pressure, Of the monopile, it characterized in that it further comprises a second main fixing rod provided at the distal end of the second main contact piece in contact with the outer circumferential surface of one monopile penetrated into the seabed.

In addition, the penetration support unit has at least one auxiliary jig pipe connected to the main jig pipe, and a first end connected to the outer peripheral surface of the lower side of the main jig pipe, and from the first end to the main jig pipe. A first supporting rod extending perpendicularly to the outer circumferential surface, and constituting the auxiliary jig pipe, a first jig divided piece having a semi-cylindrical shape to which a second end, which is the end of the first supporting rod, is connected, and the auxiliary jig pipe A second jig split piece having a semi-cylindrical shape that is detachably coupled to the first jig split piece to form the auxiliary jig pipe, and a plurality of first auxiliary fluids radially disposed on the outer circumferential surface of the first jig split piece a cylinder, a first auxiliary fixing rod each mounted to the plurality of first auxiliary fluid cylinders, and the first auxiliary contact piece having a first auxiliary contact piece in contact with the outer circumferential surface of the remaining monopile at the distal end thereof, the second jig A plurality of second auxiliary fluid cylinders radially disposed on the outer circumferential surface of the divided piece, and a second auxiliary contact piece that is respectively mounted to the plurality of second auxiliary fluid cylinders and expands and contracts with a fluid pressure, contacting the outer circumferential surface of the remaining monopile is a distal end A second auxiliary fixing rod provided in the, a third end connected to the outer peripheral surface of the upper side of the main jig pipe, and extending obliquely from the third end with respect to the outer peripheral surface of the main jig pipe to the outer peripheral surface of the first jig split piece It further comprises a second support rod having a connected fourth end, and the distance from the center of the upper end to the center of the lower end of the main jig pipe is greater than the distance from the center of the upper end to the center of the lower end of the auxiliary jig pipe.

In addition, the penetration support unit, the first support rod, the second support rod, and the auxiliary connecting portion comprising the auxiliary jig pipe is connected to a plurality of the main jig pipe, the plurality of the remaining monopile They are characterized in that the intrusion guide to the seabed by the auxiliary connection part connected in plurality.

On the other hand, in the present invention, one monopile (hereinafter, the first monopile) of a plurality of monopiles is penetrated into the sea floor, and is formed in a cylindrical shape that penetrates both upper and lower ends, or a pair of semi-cylindrical shapes that penetrate both upper and lower ends. It may be possible to provide a monopile penetration method using a monopile penetration device of the seabed, characterized in that the main jig pipe divided into and mounted on the first monopile.

In addition, the present invention is a first step of penetrating one of the plurality of monopile (monopile) monopile (hereinafter the first monopile) to the seabed; a second step of mounting a main jig pipe divided into a pair of semi-cylindrical shapes that penetrate both upper and lower ends or are formed in a cylindrical shape that penetrates both upper and lower ends to the first monopile; Determine the number of remaining monopiles except for the first monopile among the plurality of monopiles, and prepare a plurality of auxiliary jig pipes divided into a pair of semi-cylindrical shapes penetrating both upper and lower ends as much as the number of the remaining monopiles, , a third step of connecting the auxiliary jig pipe prepared by the number of the remaining monopile with the main jig pipe; One monopile (hereinafter referred to as the second monopile) of the remaining monopile is penetrated into the seabed according to the divided portion of one auxiliary jig pipe among the plurality of auxiliary jig pipes, and then the remainder of the auxiliary jig pipe is divided a fourth step of fastening the part and fixing the second monopile to the one auxiliary jig pipe; and a fifth step of separating and removing the main jig pipe and the plurality of auxiliary jig pipes from the plurality of monopiles penetrating the seabed after repeating the fourth step by the number of the remaining monopile Of course, it is also possible to provide a monopile penetration method using a jig assembly for monopile penetration of the seabed, characterized in that.

According to the present invention having the above configuration, the following effects can be achieved.

First, the present invention maximizes the convenience of installing and constructing an upper structure such as an offshore structure or an offshore wind power plant, in that a plurality of monopiles can be penetrated at an accurate position by a penetration support unit including a main jig pipe. It has the advantage of being able to

In particular, in the present invention, since the thread for penetration is formed inside and outside the monopile, it can be easily penetrated by crushing obstacles such as gravel depending on the condition of the seabed, as well as the penetration fixed state is certain and firm It has the advantage that it can be maintained.

In addition, the present invention is a variety of seabed in that the diameter of the monopile penetrating into the seabed or the width and width of the screw thread can be deformed and changed according to the state of the seabed, that is, the soil quality such as mud or sand, and can be constructed. It will have the advantage of being able to provide a reliable facility that can respond to the construction environment.

In addition, the present invention can be said to be a very excellent invention in terms of versatility, since it is possible to easily perform the monopile penetration operation by utilizing an existing facility such as an existing barge, offshore crane, or floating offshore structure.

1 is a perspective conceptual view showing the overall structure of an apparatus for penetrating a monopile by applying a jig assembly for penetrating a monopile of the seabed according to various embodiments of the present invention;
2 is a perspective conceptual view showing a state in which the penetration support unit, which is a main part of the monopile penetration jig assembly on the seabed according to an embodiment of the present invention, is mounted on the monopile;
3 is a partially cut-away isometric conceptual view showing part III of FIG. 1 by partially incision so that the internal structure can be understood
4 is a partially enlarged isometric conceptual view showing an enlarged part IV of FIG. 1 so that the internal coupling relationship can be grasped;
5 is a perspective view showing the overall structure of the penetration support unit, which is a main part of the monopile penetration jig assembly according to an embodiment of the present invention;
6 is a partially enlarged exploded isometric conceptual view illustrating an enlarged part VI of FIG. 4 so that the coupling relationship can be grasped;
7 is a perspective conceptual view illustrating a monopile penetrating using a monopile penetrating jig assembly according to another embodiment of the present invention;
8 is a perspective view illustrating a monopile penetration method using a jig assembly for monopile penetration according to another embodiment of the present invention;

Advantages and features of the present invention, and methods of achieving them, will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms.

In the present specification, the present embodiment is provided to complete the disclosure of the present invention, and to completely inform those of ordinary skill in the art to which the present invention pertains to the scope of the present invention.

And the invention is only defined by the scope of the claims.

Thus, in some embodiments, well-known components, well-known operations, and well-known techniques have not been specifically described to avoid obscuring the present invention.

In addition, like reference numerals refer to like elements throughout the specification, and terms used (referred to) in this specification are for the purpose of describing the embodiments and are not intended to limit the present invention.

In this specification, the singular also includes the plural unless specifically stated in the phrase, and elements and operations referred to as 'comprising (or having)' do not exclude the presence or addition of one or more other elements and operations. .

Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used with the meaning commonly understood by those of ordinary skill in the art to which the present invention belongs.

Also, terms defined in commonly used dictionary are not to be interpreted ideally or excessively unless defined.

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

First, FIG. 1 is a perspective conceptual view showing the overall structure of an apparatus for penetrating a monopile 200 by applying a jig assembly for penetrating a monopile of the seabed according to various embodiments of the present invention.

And, FIG. 2 is a perspective view illustrating a state in which the penetration support unit 100, which is a main part of the monopile penetration jig assembly on the seabed, is mounted on the monopile 200 according to an embodiment of the present invention.

And, FIG. 3 is a partially cut-away isometric conceptual view showing the part III of FIG. 1 by partially incision so that the internal structure can be grasped.

And, FIG. 4 is a partially enlarged perspective conceptual view showing an enlarged part IV of FIG. 1 so that the internal coupling relationship can be grasped.

And, Figure 5 is a perspective conceptual view showing the overall structure of the penetration support unit 100, which is a main part of the monopile penetration jig assembly according to an embodiment of the present invention.

And, FIG. 6 is a partially enlarged exploded isometric conceptual view showing the part VI of FIG. 4 to understand the coupling relationship.

In addition, FIG. 7 is a perspective view illustrating the penetration of the monopile 200 using the jig assembly for penetrating the monopile according to another embodiment of the present invention.

In addition, FIG. 8 is a perspective view illustrating a monopile penetration method using a jig assembly for monopile penetration according to another embodiment of the present invention.

First, penetration of the monopile 200 according to the present invention may be made by a monopile penetration device as shown in FIG. 1 .

That is, the monopile penetration device includes a working frame 10 mounted on one side of the installation object 400 as shown, and a penetration unit is installed in the working frame 10 to the seabed of the monopile 200, monopile. A penetration operation is performed on the surface 920 , and it can be understood that the crane 30 is mounted on one side of the installation object 400 .

The penetration unit is installed in the work frame 100 to guide and guide the penetration of the monopile 200 having a lower end penetrating from the sea level 910 toward the sea floor 920 Spline accommodating the monopile 200 It may include a pipe 500 .

Here, the penetration unit repeats the pattern of rotating the monopile 200 in a clockwise or counterclockwise direction together with the spline pipe 500 and moves the monopile 200 together with the spline pipe 500 to the sea floor 920 ) by pressing toward the side, the lower end of the monopile 200 may perform an operation of lowering with respect to the sea floor 920 .

For reference, it goes without saying that intrusion of the monopile 200 into the seabed 920 in the monopile penetration method according to the present invention to be described later may be performed by the same mechanism using the apparatus shown in FIG. 1 .

In addition, the crane 30 is mounted on one side of the installation object 400 and lifts the spline pipe 500 in which the monopile 200 is accommodated from the upper side of the work frame 10 to a predetermined position on the work frame 10 . It may also serve to collect and lift the monopile intrusion into the seabed 920 in cooperation with the intrusion unit.

In addition, the penetrating unit includes a rotating unit 600 for forward and reverse rotation of the monopile 200, a pressing unit 700 for pressing and pressing the monopile 200, and a rotating unit 600 and a pressing unit 700. It may include a rotational pressure induction unit 800 that provides an installation space and area and induces rotation and pressing operation.

The specific operating mechanism of the monopile penetration device as described above and the method of intruding the monopile 200 into the sea floor 920 using this monopile penetration device are described in Patent Application No. 10-2021-0102039 previously applied by the present applicant. Since it is very similar to the contents described in the previous application (hereinafter referred to as the previous application case), detailed description thereof will be omitted below, and the detailed operation mechanism and the intrusion method of the monopile 200 may refer to the contents of the previous application case described above.

On the other hand, the present invention is a monopile 200 having a lower end penetrating toward the seabed 920 as shown in FIG. Including a main jig pipe 110 detachably coupled to the pile 200, the penetration support unit 100 for supporting the remaining monopiles 200 among the plurality of monopiles 200 to sequentially penetrate the seabed 920 ) may be applied to an embodiment of a structure including

Here, the main jig pipe 110 may be formed in a cylindrical shape integrally formed through both upper and lower ends, or may be formed in a pair of semi-cylindrical shapes that are divided and detachable in the vertical direction for convenience of operation.

The present invention can be applied to the above-described embodiments, and it will be of course also possible to apply the following various embodiments.

First, the monopile 200 is hollow so that it can be securely penetrated and fixed to the seabed 920 while crushing and discharging gravel, mud, seawater, etc. generated in the process of penetrating the seabed 920 as shown in FIG. 3 . An embodiment of a structure in which threads are formed on the inside and outside of the monopile 200 may be applied.

First, by forming the first teeth 201 along the lower edge of the hollow monopile 200, the monopile 200 can be penetrated while crushing and removing the mud and gravel of the seabed 920. .

In addition, the external penetrating thread 210 may be formed in a spiral shape along the outer peripheral surface of the lower side of the monopile 200 .

In addition, the inner penetrating thread 220 may be formed in a spiral shape along the inner peripheral surface of the lower side of the monopile 200 .

Here, a scour prevention cap 230 is mounted on the outer circumferential surface of the monopile 200 and may be disposed on the upper side of the external penetration thread 210 .

At this time, the outer support bucket 240 is mounted on the lower surface of the anti-scour cap 230 to have an inner peripheral surface facing the outer peripheral surface of the monopile 200, and second teeth 241 along the lower end edge of the external support bucket 240 . ) may be formed.

In addition, the central support bucket 250 is mounted on the lower surface of the anti-scouring cap 230 and has an inner peripheral surface facing the outer peripheral surface of the monopile 200, and has an outer peripheral surface facing the inner peripheral surface of the external support bucket 240, Of course, the third tooth 251 may be formed along the lower edge of the central support bucket 250 .

Here, the pitch of the external penetrating thread 210 and the internal penetrating thread 220 may be formed to be constant or variable along the vertical direction of the monopile 200 .

That is, the above-described pitch can be modified and applied design according to the state, environment and situation of the seabed 920 so that the monopile 200 can be effectively penetrated and fixed to the seabed 920 .

In other words, the above-mentioned pitch may be formed to be the same and uniformly along the vertical direction of the monopile 200 .

In addition, the above-described pitch is gradually increased from the lower end to the upper side of the monopile 200, or applied and modified design such as gradually becoming smaller will also be possible.

In addition, the external support bucket 240 and the central support bucket 250 serve to more reliably and firmly fix the monopile 200 penetrating into the seabed 920, and the external support bucket 240 described above. And the number of the central support bucket 250 may be installed by adding or subtracting a plurality, specifically, within the range of about 2 to 5 depending on the situation and environment of the seabed 920.

In addition, the distance from the lower surface of the anti-scour cap 230 to the lower edge of the outer support bucket 240 (hereinafter, the first distance), and from the lower surface of the anti-scour cap 230 to the lower edge of the central support bucket 250 . The distance (hereinafter, the second distance) may be designed and manufactured to be the same or different.

Here, of course, the second distance may be formed to be greater than or equal to the first distance.

At this time, the ratio of the length and the outer diameter or inner diameter in the vertical direction of the outer support bucket 240 and the central support bucket 250 may be appropriately changed according to the environment of the seabed 920 to perform the operation.

In addition, the first teeth 201, the second teeth 241, and the third teeth 251 are the monopile 200 when performing the penetration operation to crush the obstacles of the seabed 920, such as mud and rocks. It is designed to perform a role.

In addition, it is preferable that the penetration of the monopile 200 is made until the upper end edges of the outer support bucket 240 and the central support bucket 250 reach the sea floor 920 .

Meanwhile, the anti-scouring cap 230 may further include a disk-shaped prevention cover piece 231 having an inner edge mounted on the outer circumferential surface of the monopile 200 and having an upper surface orthogonal to the outer circumferential surface.

In addition, the anti-scouring cap 230 may further include a cover wing piece 232 having an inclined surface bent and extended downwardly from the edge of the anti-scouring cover piece 231 .

Here, it can be understood that the upper end of the outer support bucket 240 and the upper end of the central support bucket 250 are mounted on the lower surface of the prevention cover piece 231 .

In this case, it may further include a plurality of reinforcing support ribs 202 disposed radially along the outer circumferential surface of the monopile 200 to interconnect the prevention cover piece 231 and the monopile 200 .

In addition, the first discharge valve 261 is disposed on the upper surface of the anti-scour cap 230 to communicate with the space between the outer circumferential surface of the monopile 200 and the inner circumferential surface of the central support bucket 250 , and the monopile 200 is Water, mud, and air generated in the process of penetrating into the seabed 920 are discharged.

And, the second discharge valve 262 is disposed on the upper surface of the anti-scour cap 230 to communicate with the space between the outer peripheral surface of the central support bucket 250 and the inner peripheral surface of the external support bucket 240, and the monopile 200 Water, mud, and air generated in the process of penetrating the seabed 920 are discharged.

In addition, a third discharge valve 263 is mounted on the outer circumferential surface of the monopile 200 to communicate with the inner space of the monopile 200 and is disposed above the upper surface of the scour prevention cap 230 , the monopile 200 ) is to discharge water, mud, and air generated in the process of penetrating into the seabed 920 .

On the other hand, the penetration support unit 100 may further include a plurality of first main fluid cylinders 131 radially disposed on the upper outer peripheral surface of the main jig pipe 110 penetrating at both upper and lower ends, as shown in FIG. 4 . .

Here, the penetration support unit 100 is mounted on each of the plurality of first main fluid cylinders 131 to expand and contract with fluid pressure, and one monopile penetrated into the seabed 920 among the plurality of monopiles 200 . The first main contact piece 133 in contact with the outer circumferential surface of 200 may further include a first main fixing rod 132 provided at a distal end thereof.

In this case, the penetration support unit 100 may further include a plurality of second main fluid cylinders 141 radially disposed on the outer peripheral surface of the lower side of the main jig pipe 110 penetrating both upper and lower ends.

In addition, the penetration support unit 100 is mounted on each of the plurality of second main fluid cylinders 141 to expand and contract with fluid pressure, and one monopile penetrated into the seabed 920 among the plurality of monopiles 200 . The second main contact piece 143 in contact with the outer circumferential surface of 200 may further include a second main fixing rod 142 provided at the distal end thereof.

Meanwhile, the penetration support unit 100 may further include at least one auxiliary jig pipe 120 connected to the main jig pipe 110 as shown in FIGS. 5 and 6 .

Here, the penetration support unit 100 has a first end connected to the outer circumferential surface of the lower side of the main jig pipe 110 , and a first support rod extending orthogonally from the first end to the outer circumferential surface of the main jig pipe 110 . (151) may be further provided.

At this time, the penetrating support unit 100 constitutes the auxiliary jig pipe 120, and the first jig split piece 121 of a semi-cylindrical shape to which the second end, which is the end of the first support rod 151, is connected is further added. can be provided

In addition, the penetration support unit 100 constitutes the auxiliary jig pipe 120 , and is detachably coupled to the first jig split piece 121 to form the auxiliary jig pipe 120 . A piece 122 may be further provided.

In addition, the penetration support unit 100 may further include a plurality of first auxiliary fluid cylinders 161 radially disposed on the outer circumferential surface of the first jig split piece 121 .

In addition, the penetration support unit 100 is mounted on each of the plurality of first auxiliary fluid cylinders 161 to expand and contract with fluid pressure, and the first auxiliary contact piece 163 in contact with the outer circumferential surface of the remaining monopile 200 is A first auxiliary fixing rod 162 provided at the distal end may be further provided.

In addition, the penetration support unit 100 may further include a plurality of second auxiliary fluid cylinders 171 radially disposed on the outer peripheral surface of the second jig split piece 122 .

In addition, the penetration support unit 100 is mounted on each of the plurality of second auxiliary fluid cylinders 171 and expands and contracts with fluid pressure, and the second auxiliary contact piece 173 in contact with the outer peripheral surface of the remaining monopile 200 is A second auxiliary fixing rod 172 provided at the distal end may be further provided.

In addition, the penetration support unit 100 includes a third end connected to the outer peripheral surface of the upper side of the main jig pipe 110, and a first jig split piece extending obliquely from the third end to the outer peripheral surface of the main jig pipe 110 A second support rod 152 having a fourth end connected to the outer circumferential surface of the 121 may be further provided.

Here, the distance from the center of the upper end to the center of the lower end of the main jig pipe 110 is preferably greater than the distance from the center of the upper end to the center of the lower end of the auxiliary jig pipe 120 so as to ensure a reliable and robust monopile support structure. do.

Accordingly, the auxiliary connecting portion comprising the first supporting rod 151, the second supporting rod 152, and the auxiliary jig pipe 120 is shown in Figs. 1 and 6 and 7 with respect to the main jig pipe 110 It can be connected in plural together.

In this case, the plurality of remaining monopiles 200 are guided to penetrate into the seabed 920 by a plurality of auxiliary connecting parts connected thereto.

On the other hand, the penetration support unit 100, referring back to FIG. 5, further comprising a vertical connecting rod 153 and a horizontal connecting rod 154 to secure a smooth load distribution support structure for the main jig pipe 110. it is preferable

Here, at least one or more vertical connecting rods 153 have upper and lower opposite ends connecting the first support rod 151 and the second support rod 152 to each other.

At this time, at least one or more horizontal connecting rods 154 have an auxiliary connecting portion connected to the main jig pipe 110 and left and right both ends that are disposed adjacent to the auxiliary connecting portion and interconnect the auxiliary connecting portion connected to the main jig pipe 110 .

On the other hand, the penetration support unit 100 is formed on the outer peripheral surface of one side of the main jig pipe 110 fixed to the upper end of the monopile 200 penetrated into the sea bottom 920 as shown in FIG. 7, the main jig pipe 110 It may further include an injection hole 115 communicating with the inner space of the injection hole 115 and a cylindrical injection sleeve 116 extending along the edge of the injection hole 115 and perpendicular to the outer circumferential surface of the main jig pipe 110 . .

Therefore, it goes without saying that urethane resin and cement for fixing the monopile 200 into the inside of the main jig pipe 110 through the injection hole 115 may be injected.

Here, the ratio of urethane and cement injected may be appropriately adjusted according to the state of the seabed 920 .

Hereinafter, with reference to FIG. 8 together with FIGS. 2 to 7, a monopile penetration method using a monopile penetration device of the seabed according to various embodiments of the present invention will be described.

First, one monopile (200, hereinafter, the first monopile 200) of the plurality of monopiles 200 is penetrated into the sea bottom 920, and is formed in a cylindrical shape that penetrates both upper and lower ends or is penetrating both upper and lower ends. The main jig pipe 110 divided into a pair of semi-cylindrical shapes may be mounted on the first monopile 200 .

Here, after penetrating the plurality of monopiles 200 into the seabed 920, the upper portion having the main jig pipe 110 as shown in FIGS. 7 and 8 from the upper side of each of the plurality of monopiles 200. The operation of installing the structure 300 may be additionally performed.

At this time, the operation of injecting and fixing urethane and cement through the injection hole 115 formed on the outer peripheral surface of one side of the main jig pipe 110 and communicating with the inner space of the main jig pipe 110 may be additionally performed.

On the other hand, the monopile penetration method using the monopile penetration device of the seabed according to various embodiments of the present invention will be looked at in more detail with reference to FIG. 8 .

① A plurality of monopiles (200, monopile) of one monopile (200, hereinafter, the first monopile 200) is carried out the operation of penetrating the seabed 920 (S1: first step).

② The operation of mounting the main jig pipe 110 divided into a pair of semi-cylindrical shapes that are formed in a cylindrical shape that penetrates both upper and lower ends or that penetrates both upper and lower ends to the first monopile 200 is carried out (S2: second step).

A plurality of auxiliary jig pipes 120 that are divided into a pair of semi-cylindrical shapes penetrating both upper and lower ends are determined, and the number of the remaining monopiles 200 except for the first monopile 200 among the plurality of monopiles 200 is determined. Prepares as much as the number of the remaining monopile 200, and performs the operation of connecting the auxiliary jig pipe 120 prepared by the number of the remaining monopile 200 with the main jig pipe 110 (S3: 3rd step) .

③ One monopile (200, hereinafter the second monopile 200) of the remaining monopile 200 is aligned with the divided portion of one auxiliary jig pipe 120 among the plurality of auxiliary jig pipes 120 to the sea floor After penetrating into the 920, the remaining divided parts of the auxiliary jig pipe 120 are fastened and the operation of fixing the second monopile 200 to one auxiliary jig pipe 120 is performed (S4: fourth step).

④ ~ ⑥ After repeating the fourth step (S4) by the number of the remaining monopile 200, ⑦ the main jig pipe 110 and the plurality of auxiliary jig pipes 120 are inserted into the seabed 920. Separation and removal from the monopile 200 is performed (S5: fifth step).

Here, in the second step (S2), the first main fixing rod 132 that expands and contracts by the fluid pressure from a plurality of first main fluid cylinders radially disposed on the outer peripheral surface of the upper side of the main jig pipe 110 is moved. .

At the same time, the second main fixing rod 142 that expands and contracts by the fluid pressure from the plurality of second main fluid cylinders radially disposed on the outer peripheral surface of the lower side of the main jig pipe 110 is moved.

Accordingly, the first main fixing rod 132 and the second main fixing rod 142 are brought into contact with the outer circumferential surface of the first monopile 200 through which the main jig pipe 110 is inserted, and the first monopile 200 is attached to the first monopile 200 . The operation of fixing the main jig pipe 110 may be additionally performed.

At this time, in the fourth step (S4), the fluid pressure from the plurality of first auxiliary fluid cylinders 161 radially disposed on the outer circumferential surface of the first jig split piece 121 divided by dividing the auxiliary jig pipe 120 into equal parts. Moves the first auxiliary fixing rod 162 to expand and contract by the

At the same time, a second auxiliary that expands and contracts by fluid pressure from a plurality of second auxiliary fluid cylinders 171 radially disposed on the outer circumferential surface of the second jig split piece 122 divided by dividing the auxiliary jig pipe 120 into equal parts. The fixed rod 172 is operated.

Accordingly, the auxiliary jig to the remaining monopile 200 by contacting the first auxiliary fixing rod 162 and the second auxiliary fixing rod 172 to the outer circumferential surface of the remaining monopile 200 through which the auxiliary jig pipe 120 is inserted. An operation of fixing the pipe 120 may be additionally performed.

As described above, it is understood that the basic technical idea of the present invention is to provide a jig assembly for penetrating a monopile of the seabed that enables an offshore structure using a monopile to be easily installed on the seafloor, and a method for penetrating a monopile using the same. can

And, within the scope of the basic technical spirit of the present invention, many other modifications and applications are also possible for those of ordinary skill in the art.

100... Penetration support unit
110...Main jigpipe
115...injection hole
116...injection sleeve
120...Auxiliary jig pipe
121...The first jig division
122...Second Jig Division
131...First main fluid cylinder
132...first main fixed rod
133...first main contact piece
141...2nd main fluid cylinder
142...Second main fixed rod
143...Second main contact piece
151...First support bar
152...Second support bar
153...vertical connecting rod
154...Horizontal connecting rod
161...First auxiliary fluid cylinder
162...first auxiliary fixed rod
163...first auxiliary contact piece
171...Second auxiliary fluid cylinder
172...Second auxiliary fixed rod
173...Second auxiliary contact piece
200... monopile
201...1st tooth
202...reinforced support ribs
203...First Flange
210...External Penetration Thread
220...Internal Penetration Thread
230...anti-scour cap
231...Prevention cover piece
232...cover wing piece
240...External support bucket
241...2nd tooth
250...central support bucket
251...3rd tooth
261...First discharge valve
262...Second discharge valve
263...Third discharge valve
300...Superstructure
910... at sea level
920...the bottom
S1...First step
S2...Second stage
S3...3rd stage
S4... Step 4
S5... Step 5

Claims (7)

a monopile having a lower end penetrating toward the bottom of the sea; and
A penetration support unit comprising a main jig pipe detachably coupled to one monopile penetrating into the seabed among the plurality of monopiles, and supporting the remaining monopiles of the plurality of monopiles to sequentially penetrate into the seabed. includes,
The monopile is
A first tooth formed along the lower edge of the hollow monopile,
an external penetrating thread formed in a spiral shape along the outer peripheral surface of the lower side of the monopile;
an internal penetrating thread formed in a spiral shape along the inner peripheral surface of the lower side of the monopile;
a scour prevention cap mounted on the outer circumferential surface of the monopile and disposed on the upper side of the external penetration thread;
an external support bucket mounted on the lower surface of the anti-scouring cap, having an inner peripheral surface facing the outer peripheral surface of the monopile, and having second teeth formed along the lower end edge;
A central support bucket mounted on the lower surface of the anti-scouring cap and having an inner peripheral surface facing the outer peripheral surface of the monopile, having an outer peripheral surface facing the inner peripheral surface of the external support bucket, and having third teeth along the lower end edge;
It is disposed on the upper surface of the scour prevention cap and communicates with the space between the outer circumferential surface of the monopile and the inner circumferential surface of the central support bucket, and discharges water, mud and air generated in the process of the monopile penetrating into the seabed. a first discharge valve;
It is disposed on the upper surface of the scour prevention cap and communicates with the space between the outer circumferential surface of the central support bucket and the inner circumferential surface of the outer support bucket, and discharges water, mud, and air generated in the process of the monopile penetrating into the seabed. a second discharge valve to
It is mounted on the outer circumferential surface of the monopile, communicates with the interior space of the monopile, is disposed above the upper surface of the scour prevention cap, and removes water, mud and air generated in the process of the monopile penetrating into the seabed. A jig assembly for monopile penetration of the seabed, characterized in that it further comprises a third discharge valve for discharging.
delete The method according to claim 1,
The penetration support unit,
At least one auxiliary jig pipe connected to the main jig pipe;
A plurality of first main fluid cylinders radially disposed on the outer peripheral surface of the upper side of the main jig pipe passing through both upper and lower ends;
A first main contact piece mounted on each of the plurality of first main fluid cylinders to expand and contract with fluid pressure, a first main contact piece contacting the outer peripheral surface of one monopile penetrating into the seabed among the plurality of monopiles is provided at the distal end main fixed rod,
A plurality of second main fluid cylinders radially disposed on the outer peripheral surface of the lower side of the main jig pipe passing through both upper and lower ends;
A second main contact piece mounted on each of the plurality of second main fluid cylinders to expand and contract with fluid pressure, and a second main contact piece contacting the outer circumferential surface of one monopile penetrating into the seabed among the plurality of monopiles is provided at the distal end The jig assembly for monopile penetration of the seabed, characterized in that it further comprises a main fixed rod.
a monopile having a lower end penetrating toward the bottom of the sea; and
A penetration support unit comprising a main jig pipe detachably coupled to one monopile penetrating into the seabed among the plurality of monopiles, and supporting the remaining monopiles of the plurality of monopiles to sequentially penetrate into the seabed. includes,
The penetration support unit,
At least one auxiliary jig pipe connected to the main jig pipe;
a first support rod having a first end connected to the outer circumferential surface of the lower side of the main jig pipe and extending perpendicularly from the first end to the outer circumferential surface of the main jig pipe;
A first jig divided piece of a semi-cylindrical shape to which a second end, which is a distal end of the first support rod, is connected to constitute the auxiliary jig pipe;
A second jig divided piece of a semi-cylindrical shape constituting the auxiliary jig pipe, which is detachably coupled to the first divided piece and forms the auxiliary jig pipe;
a plurality of first auxiliary fluid cylinders radially disposed on the outer circumferential surface of the first jig division piece;
a first auxiliary fixing rod mounted on each of the plurality of first auxiliary fluid cylinders, expanding and contracting with fluid pressure, and having a first auxiliary contact piece in contact with the outer circumferential surface of the remaining monopile at the distal end thereof;
a plurality of second auxiliary fluid cylinders radially disposed on the outer circumferential surface of the second jig division piece;
a second auxiliary fixing rod which is respectively mounted on the plurality of second auxiliary fluid cylinders, expands and contracts with fluid pressure, and has a second auxiliary contact piece in contact with the outer circumferential surface of the remaining monopile at its distal end;
A second support rod having a third end connected to the upper outer circumferential surface of the main jig pipe, and a fourth end extending obliquely from the third end to the outer circumferential surface of the main jig pipe and connected to the outer circumferential surface of the first jig split piece further comprising,
The distance from the center of the upper end to the center of the lower end of the main jig pipe is greater than the distance from the center of the upper end to the center of the lower end of the auxiliary jig pipe.
5. The method according to claim 4,
The penetration support unit,
The first support rod, the second support rod, and an auxiliary connecting portion configured to include the auxiliary jig pipe,
It is connected in plurality with respect to the main jig pipe,
A plurality of the remaining monopile is a jig assembly for penetrating the monopile of the seabed, characterized in that the penetration guide to the seabed by the auxiliary connection part connected in plurality.
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