CN215292758U - Submarine cable protection structure for single-pile composite cylinder foundation - Google Patents

Abstract

The utility model provides a submarine cable protection structure for single pile composite cylinder foundation, which comprises a protection tube and a pressing piece, wherein the protection tube comprises an arc section, a straight section and a bell mouth which are sequentially communicated, the arc section is arranged at the joint of a single pile and a top cover, the straight section is arranged above the top cover, and the bell mouth is positioned at the outer edge of the top cover; the pressing piece presses and covers the submarine cable which is positioned above the surface of the submarine bed and outside the bell mouth. The utility model discloses an useful part lies in, connects the protection tube that forms and covers the piece with pressing through setting up different sections, has solved the problem that the submarine cable in the compound section of thick bamboo basis of current single pile can't rationally walk the line effectively, has avoided adopting the extravagant phenomenon of material that traditional J type pipe caused to the protection submarine cable is no longer impaired on the surface of the sea bed. The whole submarine cable protection structure is well suitable for the structure of the single-pile composite cylinder foundation, the submarine cable is protected by effectively utilizing the structural characteristics of the single-pile composite cylinder foundation, the overall structure is simple, and the submarine cable protection structure is easy to construct and assemble.

Description

Submarine cable protection structure for single-pile composite cylinder foundation

Technical Field

The utility model relates to an offshore wind turbine generator system constructs technical field, especially relates to a submarine cable protection architecture for compound section of thick bamboo basis of single pile.

Background

Wind energy has attracted attention in the world as the renewable energy with the highest development value, and the China has wide breadth, long coastline and abundant offshore wind energy resources. Because large-area shallow covering layer foundations exist in coastal areas such as Liaoning, Shandong, Zhejiang, Fujian, Guangdong and Guangxi in China, the buried depth of the surface of the foundation is shallow, the steel pipe pile cannot be sunk to a required design height usually, construction needs to be carried out on embedded rocks, the construction period is long, and the difficulty is high. The single-pile composite barrel foundation combines a traditional single-pile foundation and a barrel-shaped foundation, the traditional single-pile foundation and the barrel-shaped foundation are connected through a connecting piece, and the bottom of the connecting piece is connected to a cover plate of the barrel-shaped foundation. This structure atress is simple, and the negative pressure in usable single pile and the whole dead weight of cylindric basis and the cylindric basis makes whole structure sink to appointed elevation, and it is short to marine construction window period demand, is a novel reasonable fan foundation form.

The submarine cable is used as a large channel for offshore power transmission, the protection work of the submarine cable is vital, once the submarine cable breaks down, large-area power failure can be caused, the normal production of an offshore wind farm is influenced, and huge economic loss is caused. According to the construction experience of the existing offshore wind farm, the most prone to failure is the section of submarine cable extending from the surface of the sea bed to the J-shaped pipe fixed on the single pile, and the reason is that the section of submarine cable is exposed and suspended, is very prone to damage, and cannot be protected sufficiently. If the section of submarine cable is protected by the J-shaped pipe, the shape of the submarine cable is not consistent, and materials are wasted.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned defect, the utility model aims to provide a submarine cable protection architecture for compound section of thick bamboo basis of single pile, the protection submarine cable avoids the damage.

The utility model provides a sea cable protection architecture for compound section of thick bamboo basis of single pile, compound section of thick bamboo basis of single pile include from top to bottom continuous single pile and cylindric basis, be equipped with a plurality of connecting pieces that extend along radial on the outer wall of single pile, the bottom of connecting piece sets up on the top cap of cylindric basis, sea cable protection architecture includes protection tube and covers the piece, the protection tube includes segmental arc, straight section and the horn mouth that communicates in proper order, the segmental arc sets up the junction of single pile and top cap, straight section is installed in the top cap top, the horn mouth is located the outside border department of top cap; the pressing piece presses and covers the submarine cable which is positioned above the surface of the submarine bed and outside the bell mouth.

Preferably, the ends of the arcuate segments are welded to the monopile.

Preferably, a plurality of vertical supports are provided between the top cap and the protective tube.

Preferably, the flare is higher than the surface of the sea bed.

Preferably, the pressing piece is a pressing block array and comprises a grid formed by a plurality of ropes which are connected transversely and longitudinally and a plurality of concrete blocks which are uniformly distributed in the grid.

Preferably, the cord is a polypropylene cord.

Preferably, the pressing member is prefabricated on land and then lifted to a designated place in the sea by a lifting appliance.

The utility model discloses an useful part lies in, connects the protection tube that forms and covers the piece with pressing through setting up different sections, has solved the problem that the submarine cable in the compound section of thick bamboo basis of current single pile can't rationally walk the line effectively, has avoided adopting the extravagant phenomenon of material that traditional J type pipe caused to the protection submarine cable is no longer impaired on the surface of the sea bed. The whole submarine cable protection structure is well suitable for the structure of the single-pile composite cylinder foundation, the submarine cable is protected by effectively utilizing the structural characteristics of the single-pile composite cylinder foundation, the overall structure is simple, and the submarine cable protection structure is easy to construct and assemble.

Drawings

Fig. 1 is a schematic view of the installation structure of the submarine cable protection structure according to the present invention;

FIG. 2 is a schematic view of the pressing part

Element number description:

1 Single pile

2 Top cover

3 connecting piece

4 submarine cable

5 protective tube

51 arc segment

52 straight section

53 horn mouth

54 flange

55 supporting piece

6 pressing and covering piece

61 concrete block

62 rope

Detailed Description

The following describes the present invention in further detail with reference to the accompanying drawings. These embodiments are provided only for illustrating the present invention and are not intended to limit the present invention.

In the description of the present invention, it should be noted that the terms "longitudinal", "lateral", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

As shown in fig. 1, the conventional mono-pile composite cylindrical foundation includes a mono-pile 1 and a cylindrical foundation connected up and down, a plurality of connecting members 3 extending in a radial direction are provided on an outer wall of the mono-pile 1, and bottoms of the connecting members 3 are provided on a top cover 2 of the cylindrical foundation. The utility model provides a submarine cable protection architecture for compound section of thick bamboo basis of single pile, this submarine cable protection architecture include protection tube 5 and cover 6 with pressing.

The protection tube 5 comprises an arc section 51, a straight section 52 and a bell mouth 53 which are sequentially communicated, wherein the arc section 51 is arranged at the joint of the monopile 1 and the top cover 2, and the end part of the arc section extends upwards and is welded on the monopile 1. A plurality of vertical supports 55 are provided on the top cover 2, and the straight section 52 is installed at a designated height above the top cover 2 by being supported by the supports 55. In operation, the arc-shaped section 51 and the straight section 52 can be split into a plurality of small sections according to transportation or construction requirements, and two adjacent small sections are connected in a sealing mode through the flange 54. The arcuate section 51, the straight section 52 and the support 55 are in particular circular steel tubes. The bell mouth 53 is located at the outer edge of the top cover 2 and is slightly higher than the surface of the sea bed, which can help the sea cable 4 smoothly transit from the surface of the sea bed into the protection tube 5, and prevent the sea cable 4 from being damaged by the sharp edge cutting of the steel tube.

As shown in fig. 1 and 2, the pressing member 6 presses the submarine cable 4 located above the surface of the submarine bed and outside the bell mouth 53, thereby protecting the submarine cable 4 from being damaged by foreign objects and preventing the submarine cable 4 from being damaged. In one embodiment of the present invention, the pressing member 6 is a pressing block array including a grid formed by a plurality of ropes 62 connected in a horizontal and vertical direction, and a plurality of concrete blocks 61 uniformly distributed on the nodes of the grid. The concrete block 61 is generally square and the rope 62 is a polypropylene rope or other braided rope of equal strength requirements. The polypropylene fiber rope is acid and alkali resistant, corrosion resistant and strong in stretching, and can adapt to the application scene in seawater. The press-on part 6 is usually prefabricated on land, and the size of the grid formed by connecting a plurality of ropes 62 in series can be adjusted according to requirements. After the pressing piece 6 is manufactured, the pressing piece 6 can be hung to a designated place in the sea through a lifting appliance, and the submarine cable 4 is pressed.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims (7)

1. A submarine cable protection structure for a single-pile composite barrel foundation, wherein the single-pile composite barrel foundation comprises a single pile (1) and a barrel-shaped foundation which are connected up and down, the outer wall of the single pile (1) is provided with a plurality of connecting pieces (3) which extend along the radial direction, and the bottom of each connecting piece (3) is arranged on a top cover (2) of the barrel-shaped foundation, the submarine cable protection structure is characterized by comprising a protection pipe (5) and a pressing piece (6), wherein the protection pipe (5) comprises an arc-shaped section (51), a straight section (52) and a bell mouth (53) which are sequentially communicated, the arc-shaped section (51) is arranged at the joint of the single pile (1) and the top cover (2), the straight section (52) is arranged above the top cover (2), and the bell mouth (53) is positioned at the outer edge of the top cover (2); the pressing piece (6) presses and covers the submarine cable (4) which is positioned above the surface of the submarine bed and outside the bell mouth (53).

2. Submarine cable protection according to claim 1, wherein the ends of the curved sections (51) are welded to the monopile (1).

3. Submarine cable protection according to claim 1, wherein a plurality of vertical supports (55) are provided between the top cap (2) and the protection pipe (5).

4. Submarine cable protection according to claim 1, wherein the flare (53) is higher than the surface of the sea bed.

5. Submarine cable protection according to claim 1, wherein the crimp elements (6) are an array of compacts comprising a grid formed by a plurality of transverse and longitudinal connected ropes (62), and a plurality of concrete masses (61) uniformly distributed in the grid.

6. Submarine cable protection according to claim 5, wherein said rope (62) is a polypropylene rope.

7. Submarine cable protection according to claim 5, wherein the ballast part (6) is prefabricated on land and then lifted to the desired location in the sea by means of a spreader.

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