KR101352095B1 - Suction pile substructure - Google Patents

Abstract

The present invention is a tower on which maritime facilities are mounted; A suction pile installed at a lower portion of the tower to support the tower and inserted into the seabed; And installed in the suction pile, and discloses a suction pile substructure comprising a floating body for floating the suction pile. The suction pile undercarriage as described above provides a floating function on the upper portion of the suction pile, so that the suction pile can be transported at sea by providing a towing vessel without the need for a large barge.

Description

Suction pile substructure {SUCTION PILE SUBSTRUCTURE}

The present invention relates to a substructure for fixing offshore facilities such as offshore wind power generators, etc., and particularly relates to a suction pile substructure capable of self-floating.

Recently, due to the problems of environmental regulation and fossil fuel supply and demand due to global warming, the wind power generation as a renewable energy production system is in the spotlight.

In general, wind power generators have been installed mainly on land, but the installation of the sea gradually increases. For the wind power generation, the quality of the wind is generally better than that of the land, and there is an advantage that it can respond to the blade noise problem more easily. In particular, it is necessary to secure large-scale complexes in order to secure economic feasibility, and it is difficult to equip such complexes on land, and offshore and offshore seas are emerging as large offshore wind farms. In order to install these offshore wind turbines offshore, it is necessary to have a substructure for fixing the wind turbines to the seabed.

In the conventional offshore wind turbine fixed structure 10, as shown in Figure 1, the suction pile 15 is coupled to the lower portion of the tower 13 on which the wind power generator 11 is mounted, the suction pile ( 15) is immersed and penetrated the seabed (1).

Since the conventional substructure 10 does not have its own floating function, it is loaded on a barge (not shown) and transported to an installation location, and then lifted from the barge by a marine crane (not shown), and then sinks to an installation location. ). Recently, as the offshore wind turbine becomes larger, the lower structure 10 also becomes large in size and heavy in weight, so in order to install at sea in this way, a large-capacity barge or crane is required.

In addition, the suction pile 15 is submerged in the ground (1) after being submerged to resist the horizontal force and the moment transmitted by the offshore wind turbine, for this purpose, the connection between the suction pile 15 and the tower 13 ribs Since the reinforcement 16 is attached to the reinforcement, the construction cost is increased, and the process is complicated, and air takes a long time.

The present invention is to provide a suction pile substructure that can be used as a floating body in the sea transport process by giving its own floating function.

In addition, the present invention is to provide a suction pile substructure that can support the bearing capacity of the suction pile and resist the horizontal force and the moment transmitted by the offshore wind turbine.

The present invention is a tower on which maritime facilities are mounted; A suction pile installed at a lower portion of the tower to support the tower and inserted into the seabed; And installed in the suction pile, and discloses a suction pile substructure comprising a floating body for floating the suction pile.

In addition, the floating body discloses a suction pile substructure, characterized in that coupled to the upper portion of the suction pile.

In addition, the floating body discloses a suction pile substructure, characterized in that the upper surface has an open cylindrical shape.

In addition, the floating body discloses a suction pile substructure, characterized in that the load filling space is provided inside so that the load can be applied to the load.

In addition, the floating body discloses a suction pile substructure, characterized in that at least one partition is provided in the load filling space.

In addition, both ends of the partition discloses a suction pile substructure, characterized in that coupled to the outside of the tower and the inside of the floating body, respectively.

In addition, the suction file discloses a suction pile substructure, characterized in that the mono suction file consisting of one.

In addition, the suction file discloses a suction pile substructure, characterized in that the multi-suction file consisting of a plurality.

In addition, the floating body discloses a suction pile substructure having a polygonal cross section connecting a plurality of the suction pile.

In addition, the present invention is installed in the tower, and discloses a suction pile substructure further comprising a discharge portion for discharging the water inside the suction pile to the outside.

In addition, the discharge unit, the discharge pipe is installed in the tower, is formed to communicate with the suction pile; And a pump installed in the tower, the pump providing a suction force to the discharge pipe to discharge the water inside the suction file to the outside through the discharge pipe.

The suction pile substructure according to the present invention has the following effects.

(1) The present invention is provided by the floating body on the upper portion of the suction pile to give its own floating function, there is an effect that the suction pile can be transported at sea as long as there is no need for a large barge barge.

(2) The present invention is easy to fill the load through the upper open surface of the floating body such as concrete or sandstone by making the floating body in a cylindrical shape with an open upper surface, the construction speed is fast and material cost can be reduced Has the effect that it can.

(3) The present invention is to penetrate the suction pile into the seabed ground and to fill the load between the bulkheads of the floating body and load the load, thereby reinforcing the support capacity of the suction pile and as a gravity of the load It has an efficient support structure to resist the horizontal forces and moments transmitted by the offshore wind turbine.

(4) The present invention implements the pressure loading function of the suction pile by discharging water inside the suction pile to the outside by using a pump and a discharge pipe installed in the tower, so that the suction pile can be easily introduced into the ground. In addition, since one large-capacity pump is utilized, the suction file may be easily recovered after injecting the suction file into the ground.

(5) The present invention has a very high rent of large equipment in the sea, but if it has its own floating function, it can be quickly installed on the seabed without using a large barge or a large crane, and thus has an effect of reducing the cost of installing the sea.

1 is a view showing a substructure for fixing a conventional offshore wind power generator.
Figure 2 is a perspective view showing a suction pile substructure according to an embodiment of the present invention.
3 is a plan view of Fig.
4 is a cross-sectional view taken along line AA in Fig.
Figure 5 is a cross-sectional view showing a configuration in which the discharge portion is added to the suction pile substructure of the present invention.
Figure 6 is a perspective view showing a suction pile substructure according to another embodiment of the present invention.
FIG. 7 is a plan view of FIG. 6.
FIG. 8 is a cross-sectional view taken along line BB of FIG. 7.
9 is a view sequentially showing the construction work of the suction pile substructure of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

Prior to the description of the present invention, the suction pile substructure described below has been exemplified by the application of the offshore wind turbine to the substructure that is fixed to the undersea ground, but it is noted that it can be applied to both offshore wind turbines as well as offshore facilities. .

Figure 2 is a perspective view showing a suction pile substructure according to an embodiment of the present invention, Figure 3 is a plan view of Figure 2, Figure 4 is a cross-sectional view taken along the line A-A of FIG.

As shown in FIGS. 2 to 4, the suction pile substructure 100 according to the preferred embodiment of the present invention includes a tower 110, a suction pile 120, and a floating body 130.

The tower 110 is manufactured in a cylindrical shape, and is equipped with an offshore facility, for example, an offshore wind power generator 11 (see FIG. 1) at an upper end thereof. Here, the wind power generator 11 includes an upper tower connected to the tower 110 by a flange (not shown), a nacelle that is coupled to the rotor and the upper tower to rotatably support the rotor, and the like. In addition, the wind power generator 11 may further include a power generator, a power storage device, or a power transmission device. Since the wind power generator 11 can be understood by known techniques, detailed description thereof will be omitted.

The suction pile 120 is coupled to the lower portion of the tower 110 to support the tower 110 and is flooded and introduced into the sea bed 1 (see FIG. 9). The suction pile 120 may have a cylindrical shape of a circular or polygonal shape in which the upper surface is sealed and the lower surface is opened. The suction pile 120 may be manufactured in various forms. In the present embodiment, a single suction pile 120 having a cylindrical suction pile 120 is illustrated.

In addition, the suction pile 120 may be made of steel or concrete, but it is preferable to make the suction pile 120 to be made of steel or a steel composite member for weight reduction during sea transport.

The floating body 130 is installed on the upper portion of the suction pile 120 to float the suction pile 120. For example, the floating body 130 may be manufactured by first manufacturing the suction pile 120 and then welding or bolting the upper portion of the suction pile 120. Here, when the floating body 130 is fastened to the suction pile 120 with a bolt, a sealing member (not shown) such as rubber packing is inserted into the connection portion of the suction pile 120 and the floating body 130 to leak water. It is desirable to prevent that.

In addition, the floating body 130 has a cylindrical shape with an open top surface. Here, since the floating body 130 has an open top surface, it is easy to fill the load (3, FIG. 9) to be described later through the upper opening of the floating body 130, so that the construction speed is high and the material cost is high. There is an advantage to reduce. Floating body 130 is preferably made of the same cross-section with the suction pile (120). For example, in the present exemplary embodiment, a configuration in which the floating body 130 is formed in a cylindrical shape so as to have the same circular cross section as the suction pile 120 manufactured in a cylindrical shape is not limited thereto, and the suction pile 120 is not limited thereto. In the case of manufacturing a polygon such as a quadrangle, the floating body 130 may be manufactured as a polygon. In addition, in the present embodiment, the configuration of manufacturing the floating body in the form having the same cross-section as the suction pile, but is not limited to this, it is also possible to produce the floating body in the form having a different cross section than the suction pile.

In addition, the floating body 130 is submerged in the suction pile 120, the infiltration into the seabed ground (1) after filling the load (3, see Fig. 9), such as concrete or sandstone, the upper surface to apply the load Open and the load filling space 131 is provided therein.

In addition, the floating body 130 is provided with at least one partition 133 in the load filling space 131. The partition wall 133 is coupled to each other by welding both ends of the partition wall 133 to the inner surface of the floating body 130 and the outer surface of the tower 110 in the load filling space 131 to suction the tower 110. It serves to reinforce the bearing capacity of the pile (120). In this embodiment, the configuration in which the four partitions 133 are radially provided in the load filling space 131 of the floating body 130, but is not limited to this one partition or two, three, five A plurality of partition walls may be provided.

Figure 5 is a cross-sectional view showing a configuration in which the discharge portion is added to the suction pile substructure of the present invention.

As shown in Figure 5, the suction pile substructure 100 of the present invention further includes a discharge unit 140 for discharging the water inside the suction pile 120 to the outside for the pressure load of the suction pile 120 can do. Here, the discharge unit 140 is composed of a discharge pipe 141 and the pump 143.

Discharge pipe 141 is installed in the longitudinal direction inside the tower 110, the lower end of the discharge pipe 141 is in communication with the top surface of the suction pile 120, the upper end is in communication with the outside through the top of the tower 110. Is connected to the inside of the suction pile 120 is connected to the outside through the discharge pipe 141. In the present exemplary embodiment, the discharge pipe 141 is illustrated in the interior of the tower 110, but the configuration is not limited thereto, and the discharge pipe 141 may be installed outside the tower 110.

The pump 143 is installed in the tower 141, and provides a suction force to the discharge pipe 141 to discharge the water inside the suction pile 120 to the outside through the discharge pipe 141.

Through this, when the lower portion of the suction pile 120 lands on the bottom of the sea, negative pressure, that is, negative pressure generated while extracting water from the inside of the suction pile 120 to the outside using the discharge pipe 141 and the pump 143. Inject the suction pile 120 into the ground (1). In addition, since one large-capacity pump 143 is utilized, the suction pile 120 may be easily inserted into the ground 1 and the suction pile 120 may be recovered.

6 is a perspective view illustrating a suction pile substructure according to another exemplary embodiment of the present invention, FIG. 7 is a plan view of FIG. 6, and FIG. 8 is a cross-sectional view taken along line B-B of FIG. 7.

6 to 8, the suction pile substructure 200 according to another exemplary embodiment of the present invention includes a tower 210, a suction pile 220, and a floating body 230. Here, another embodiment of the present invention, unlike the mono suction file of the above embodiment includes a multi-suction file consisting of a plurality of suction files.

In the present exemplary embodiment, the suction pile 220 includes three pieces 221, 222, and 223, and the suction piles 221, 222, and 223 are arranged in a triangle around the tower 210. It was. Therefore, the present embodiment will not be repeated description of the configuration and operation of the tower 210 and the suction pile 220 performing the same function as the above-described embodiment. Hereinafter, the floating body 230 different from the above-described embodiment will be described.

The floating body 230 is installed on the upper portion of the suction pile 220 to float the suction pile 220.

In addition, the floating body 230 is formed in a cylindrical shape and has a triangular cross section connecting three suction piles 221, 222, and 223.

In addition, the floating body 230 is immersed in the suction pile 220 to penetrate the seabed ground (1), and then the upper surface is opened and filled inside so that it can be loaded with a load (3), such as concrete or sandstone A load filling space 231 is provided.

In addition, the floating body 230 is provided with at least one partition wall 233 in the load filling space 231. The partition wall 233 is coupled to each other by welding both ends of the partition wall 233 to the inner surface of the floating body 230 and the outer surface of the tower 210 in the load filling space 231, so as to suction the tower 210. It serves to reinforce the bearing capacity of the pile (220).

In another embodiment of the present invention described above, the suction file 220 is illustrated a tri-suction file consisting of three (221, 222, 223), but is not limited to two, four, four, It includes a multi-suction file consisting of a plurality, such as five, it is also possible to configure the floating body 230 has a polygonal cross section connecting a plurality of suction files.

9 is a view sequentially showing the construction work of the suction pile substructure of the present invention.

9 illustrates the construction work of the suction pile substructure 100 according to an embodiment of the present invention, the construction work of the suction pile substructure 200 according to another embodiment of the present invention is also the same as the embodiment. .

First, as shown in Figure 9 (a), the suction pile substructure 100 manufactured in a dry dock (not shown) is launched to the sea. At this time, by using the floating body 130 installed on the upper portion of the suction pile 120, the suction pile 120 is floated on the sea. By providing the self-floating function to the suction pile 120 through this, it is possible to transport the suction pile 120 at sea if there is no tug (not shown) without a large barge (not shown).

Next, as shown in Figure 9 (b), the suction pile 120 is floated on the sea and transported to a desired position, and then water is injected into the floating body 130 to immerse the suction pile 120 to submarine ground Intrude in (1).

Next, as shown in Figure 9 (c), when the ground penetration of the suction pile 120 is completed, the load (3), such as concrete or sandstone in the load filling space 131 of the floating body 130 Fill in and apply load. Through this, it has an effective support structure to reinforce the supporting force of the suction pile 120 and to resist the horizontal force and the moment transmitted by the offshore wind turbine as the gravity of the load 3.

Finally, the upper tower of the wind power generator 11 (see FIG. 1) is connected to the tower 110 of the lower structure 100 using a flange (not shown).

According to the suction pile lower structure (100, 200) of the present invention, by installing the floating body (130, 230) on the upper portion of the suction pile (120, 220) to give its own floating function, if there is no need for a large barge, The suction piles 120 and 220 can be transported at sea. In addition, the suction piles (120, 220) are introduced into the seabed (1), and the load (3), such as concrete or sandstone, is filled between the partitions (133, 233) of the floating body (130, 230) by By applying a, it has an effective support structure to reinforce the supporting force of the suction pile (120, 220) and to resist the horizontal force and the moment transmitted by the offshore wind turbine as the gravity of the load (3). In addition, the rent of large equipment is very high in the sea, but if there is a self-floating function can be quickly installed on the seabed ground (1) without using a large barge or a large crane, it is possible to reduce the cost of installing the sea installation.

While the present invention has been described in connection with certain exemplary embodiments, it will be understood by those skilled in the art that various changes may be made without departing from the scope of the present invention. In addition, the description in parentheses in the description of the claims is intended to prevent obscuration of the description, and the scope of the claims of the claims should be construed to include all the items in parentheses.

100, 200: Suction pile substructure
110, 210: Tower
120, 220: Suction pile
130, 230: floating body
131, 231: filling space
133, 233: bulkhead
140: discharge part
141: discharge pipe
143: Pump

Claims (11)

A tower on which maritime facilities are mounted;
A suction pile installed at a lower portion of the tower to support the tower and inserted into the seabed; And
It is installed coupled to the upper portion of the suction pile, and has a cylindrical shape having an upper surface, including a floating body to float the suction pile,
The floating body is a suction pile lower structure, characterized in that the load filling space is provided therein to fill the load to apply the load. delete delete delete The suction pile substructure of claim 1, wherein the floating body includes at least one partition wall in the load filling space. 6. The suction pile substructure of claim 5, wherein both ends of the partition wall are respectively coupled to an outer side of the tower and an inner side of the floating body. The suction pile substructure according to claim 1, wherein the suction pile is a mono suction pile. The suction pile substructure of claim 1, wherein the suction pile is a multi suction pile. The suction pile substructure of claim 8, wherein the floating body has a polygonal cross section connecting a plurality of the suction piles. The method of claim 1, wherein the suction pile substructure,
Suction pile substructure is installed in the tower, further comprising a discharge portion for discharging the water inside the suction pile to the outside. The method of claim 10, wherein the discharge unit,
A discharge pipe installed in the tower and formed to communicate with the suction pile; And
Suction pile substructure is installed in the tower, including a pump for providing a suction force to the discharge pipe to discharge the water inside the suction pile to the outside through the discharge pipe.

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