CN113071605A - Anchoring foundation suitable for floating type fan and construction method thereof - Google Patents
Anchoring foundation suitable for floating type fan and construction method thereofDownload PDFInfo
- Publication number
- CN113071605A CN113071605ACN202110271540.3ACN202110271540ACN113071605ACN 113071605 ACN113071605 ACN 113071605ACN 202110271540 ACN202110271540 ACN 202110271540ACN 113071605 ACN113071605 ACN 113071605A
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- anchor
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- sinking plate
- sinking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
- B63B2021/505—Methods for installation or mooring of floating offshore platforms on site
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/727—Offshore wind turbines
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Foundations (AREA)
Abstract
Translated fromChinese
Description
Technical Field
The invention belongs to the technical field of offshore wind power foundations, and relates to an anchoring foundation suitable for a floating type fan and a construction method of the anchoring foundation.
Background
China accelerates social development in recent decades, and particularly changes the world-wide in energy utilization. In recent 30 years, with the increase of the demand for oil and gas resources, oil and gas exploitation tends to be saturated, and harmful gases generated by combustion of fossil energy such as oil and gas and the like can cause certain harm to the living environment of human beings. Since the new century, clean wind energy resources are gradually becoming the focus of new energy development.
Compared with onshore wind power, offshore wind power is more stable, is close to the coastal power concentration place, and has longer annual utilization time. At present, the foundation of offshore wind power is mainly a fixed structure in a shallow sea area, but with less and less offshore wind power resources available for development, a wind power plant gradually develops to a deep sea area. In the sea area with the water depth of more than 50m, the construction difficulty of the fixed foundation is high, the cost is overhigh, and the floating type fan is a better choice. The floating type fan is simple in principle, the wind turbine generator is installed on the floating type platform and is fixed on the seabed anchoring foundation through a plurality of anchor cables. There are three common types of bottom supported platforms for offshore floating wind turbines: semi-submersible, Spar (Spar), and tension leg. The bottom of the semi-submersible platform is provided with a distributed buoy structure, so that a restoring moment resisting the movement of the platform can be generated when the fan inclines, and the applicable water depth range is wide. The gravity center of the column (Spar) platform is far lower than the floating center, when the platform inclines, a restoring couple can be generated between the gravity center and the floating center, and the applicable water depth is usually more than 100 m. The tension leg type platform is similar to a structure of being tightened up and down, mooring tension vertically downwards balances upward buoyancy of the floating body, but the installation process is complex and the manufacturing cost is high.
Disclosure of Invention
The invention aims to solve the technical problem of providing an anchoring foundation suitable for a floating type fan and a construction method thereof, wherein the anchoring foundation is simple in structure, a flange is arranged at the lower part of an anti-sinking plate and is connected with the anti-sinking plate and spiral anchors, an anchor chain assembly is fixedly connected with the upper side surface of the anti-sinking plate, a plurality of spiral anchors are arranged in a triangular shape, an anchor rope connected with the anchor chain assembly extends towards the center of the triangular shape and is connected with a platform, the construction process is simple, the construction efficiency is high, the assembly and the transportation are convenient, the cost is low, and the operation is simple and convenient.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: an anchoring foundation suitable for a floating type fan comprises an anti-sinking plate, a flange, a spiral anchor and an anchor chain assembly; the upper end of the spiral anchor is connected with the lower side of the flange, the flange is connected with the anti-sinking plate, and the anchor chain assembly is connected with the anti-sinking plate; the spiral sheet on the spiral anchor is multiple; the plurality of spiral anchors are arranged in a triangular shape, and the anchor cables connected with the anchor chain components extend upwards to the center of the triangular shape.
The anti-sinking plate is of a hollow box-type structure, a plurality of annular raised studs are arranged at the center of the cover plate of the box body, and fillers are arranged inside the box body.
The upper side surface of the flange is annularly provided with a plurality of mounting holes, and bolts are connected with the mounting holes and the anti-sinking plate.
The spiral sheets of the spiral anchor are distributed in the axis direction of the anchor rod at unequal intervals.
The anchor chain component comprises an anchor ring connected with the fixing plate, an anchor cable connected with the anchor ring, and a plurality of fixing holes distributed annularly and arranged outside the anchor ring.
The construction method of the anchoring foundation suitable for the floating type fan comprises the following steps:
s1, anchoring, namely, penetrating the screw anchor into the seabed at the designated position by adopting a screw drilling machine; when the spiral anchor penetrates, the upper surface of a flange at the upper end of the spiral anchor is above a mud surface, and the lower surface of the flange is in contact with a soil body;
s2, installing the anti-sinking plate, hoisting the anti-sinking plate into the specified spiral anchor by using hoisting equipment, wherein a connecting hole at the bottom of the anti-sinking plate corresponds to a mounting hole on the flange, and a bolt penetrates through the connecting hole and the mounting hole to connect the flange and the anti-sinking plate into a whole;
and S3, mounting the anchor chain assembly, sleeving a fixing hole on a fixing plate of the anchor chain assembly into the stud on the anti-sinking plate, contacting the bottom of the fixing plate with the upper side surface of a cover plate of the anti-sinking plate, and locking the fixing plate by matching a nut and the stud.
According to the invention, the spiral anchor and the anti-sinking plate foundation are reasonably combined, so that the stability of the spiral anchor and the corresponding anti-pulling bearing performance are greatly improved. This anchor basis is assembled structure, is convenient for adjust, the flexibility ratio is high, the installation cost is low, convenient to use, and size, material and position are adjusted according to marine environment and geological conditions in a flexible way to spiral anchor, anti-sinking board and anchor chain subassembly, and the installation between spiral anchor, anti-sinking board and anchor chain subassembly three is mainly fixed through screw bolt and nut. The anchor has low requirements on the materials and the shapes of the spiral anchor and the anti-sinking plate, low processing difficulty, convenient transportation, batch production, transportation and installation, and is a novel anchor foundation which can be produced, manufactured and installed in a modularized way, and has low cost, flexible transportation and superior bearing capacity.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the connection of the flange and the screw anchor according to the present invention.
Fig. 3 is a schematic structural view of the screw anchor of the present invention.
FIG. 4 is a schematic view of the internal structure of the hawse assembly of the present invention.
Fig. 5 is a schematic structural view of the connection of the anti-settling plate and the anchor chain assembly according to the present invention.
Fig. 6 is a state diagram of the present invention in use.
In the figure: theanti-sinking plate 1, the stud 11, theflange 2, thebolt 21, thespiral anchor 3, thespiral sheet 31, theanchor rod 32, theanchor chain component 4, thefixing plate 41, theanchor ring 42, theanchor cable 43 and thefixing hole 44.
Detailed Description
As shown in fig. 1 to 6, an anchoring foundation suitable for a floating type wind turbine includes ananti-sinking plate 1, aflange 2, aspiral anchor 3 and ananchor chain assembly 4; the upper end of thespiral anchor 3 is connected with the lower side of theflange 2, theflange 2 is connected with theanti-sinking plate 1, and theanchor chain assembly 4 is connected with theanti-sinking plate 1; the spiral sheet on thespiral anchor 3 is a plurality of spiral sheets; the plurality ofscrew anchors 3 are arranged in a triangular shape, and theanchor lines 43 connected to thechain assembly 4 extend upward toward the center of the triangle.
Preferably, the spiral anchor foundation has the advantages of fast installation, strong anti-pulling performance and convenient recycling compared with other foundation types.
Preferably, the ordinary screw anchor needs to apply larger torque to penetrate into the soil body, the torque required by the reverse rotation soil discharging surface is only one dozen times of that of the penetration, even smaller, if a single screw anchor foundation is used as an anchoring foundation at the bottom of the floating platform, the single screw anchor foundation is likely to rotate in the reverse direction soil discharging surface, so that the foundation is loosened, the bearing capacity of the foundation is greatly reduced, the superstructure is overturned and damaged, engineering accidents are caused, and the situation is prevented by applying pressure on the upper part of the screw anchor.
Preferably, the anti-sinking plate foundation is large in plate area, and the riprap is added on the upper portion of the anti-sinking plate foundation, so that the upper pressure of the anti-sinking plate foundation is conveniently increased, the spiral anchor is connected with the anti-sinking plate foundation, the spiral anchor is prevented from rotating out of the soil surface, and meanwhile, the anti-pulling bearing performance of the anchoring foundation is further improved; in addition, the anti-sinking plate foundation is easy to produce and transport, and is also an advantage of the anchoring foundation.
Preferably, the foundation can effectively resist complex wind wave load of different sea areas, and meanwhile, the production, installation and recovery cost of the floating wind turbine is greatly reduced.
In the preferred scheme, theanti-sinking plate 1 is a hollow box-shaped structure, a plurality of studs 11 protruding in an annular shape are arranged at the center of a cover plate of the box body, and fillers are arranged in the box body.
Preferably, the size of the spiral anchor and the anti-settling plate is adjusted according to the actual bearing condition, the anti-settling plate is internally arranged in a hollow mode, falling stones, broken sands and other industrial wastes can be conveniently placed to increase the weight of the anti-settling plate, and the anti-pulling bearing performance of the anti-settling plate is greatly improved while the material production cost is saved.
Preferably, the number of the screws, the number of the bolt holes and the number of the bolts for connection are adjusted according to actual requirements.
In a preferable scheme, a plurality of mounting holes are annularly distributed on the upper side surface of theflange 2, and thebolts 21 are connected with the mounting holes and theanti-sinking plate 1.
In a preferred scheme, thespiral sheets 31 of thespiral anchor 3 are distributed at unequal intervals in the axial direction of theanchor rod 32.
Preferably, thespiral sheet 31 is combined with the anchor rod by welding, the depth of thespiral sheet 31 penetrating into the soil body is determined according to the requirement of the uplift bearing capacity, the higher the uplift bearing capacity is required, the deeper the installation depth of the anchor sheet is, and the larger the area of the corresponding anchor sheet is.
Preferably, a plurality ofspiral sheets 31 are arranged on one spiral anchor, the specific number is determined according to the actual bearing capacity requirement, and thespiral sheets 31 are single-blade.
Preferably, in order to fully exert the bearing performance of each anchor sheet and reduce mutual influence, the distance between theadjacent spiral sheets 31 is set to be more than 6 times of the diameter of the anchor sheet, and the specific distance is determined according to geological conditions.
In a preferred embodiment, thechain assembly 4 includes ananchor ring 42 connected to thefixing plate 41, and ananchor line 43 connected to theanchor ring 42, and a plurality offixing holes 44 annularly arranged are disposed outside theanchor ring 42.
Preferably, the bolts protruding from the upper portion of the flange pass through the anti-sinking plate and thefixing holes 44 of thefixing plate 41, and then the three are tightly fixed by nuts.
Preferably, the anti-sinking plate is combined with the screw anchor to effectively prevent the screw anchor from loosening; simultaneously, the anti-pulling bearing capacity provided by the spiral anchor enables the anti-sinking plate to be more stable, and the anti-pulling bearing capacity and the anti-sinking plate cooperate with each other. Moreover, under the condition of the same steel consumption, the bearing performance of the base structure compounded by the two is more excellent. The spiral anchor and the anti-sinking plate can be produced in batches in a modularized mode, the anti-sinking plate serves as a common plate-shaped base structure, the shape of the anti-sinking plate can be square, rectangular or circular, the processing difficulty is low, and the production process is simple and easy.
Preferably, the transportation and installation of the screw anchor-anti-sinking plate anchoring foundation are carried out according to the parts in blocks, and the transportation and installation difficulty of each part is low. After the site selection of the floating platform is determined, a plurality of anti-sinking plates and the screw anchors under the same floating platform are transported to an appointed position, and then the screw anchors are penetrated into an appointed depth by a drilling machine. The fixed foundation is convenient to recover, similar processes are adopted for recovery in blocks after the recovery is completed, the floating platform is convenient to re-select the site, and the cost of the mobile platform is reduced.
Preferably, the screw anchor-anti-sinking plate anchoring foundation is produced in a modularized mode, corresponding parts and the number of the parts are selected according to needs, the corresponding transportation construction process is simple and convenient, after each part is transported to a designated position in a blocking mode, the screw anchor is firstly penetrated into the soil body through the screw drilling machine, the upper surface of the flange of the screw anchor is guaranteed to be above the mud surface, the lower surface of the flange is made to be in contact with the soil body, after the screw anchor is installed, the anti-sinking plate foundation is connected with bolts on the flange according to corresponding hole positions, the foundation is made to be in full contact with seabed soil, and the screw anchor and the anti-sinking plate are fixed through the bolts and nuts. After the connection between the two is completed, theanchor chain assembly 4 is installed. Twoanchor rings 42 are arranged on theanchor chain assembly 4 and used for connecting the spiral anchor-anti-sinking plate anchoring foundation and the floating platform, and theanchor cables 43 are connected with the anchoring foundation through theanchor rings 42.
In a preferred embodiment, the above method for constructing an anchor foundation for a floating wind turbine includes the following steps:
s1, anchoring, namely, adopting a spiral drilling machine to penetrate thespiral anchor 3 into the seabed at the appointed position; when the spiral anchor penetrates, the upper surface of theflange 2 at the upper end of thespiral anchor 3 is above a mud surface, and the lower surface of theflange 2 is in contact with a soil body;
s2, installing the anti-sinking plate, hoisting theanti-sinking plate 1 onto the specifiedspiral anchor 3 by using hoisting equipment, wherein a connecting hole at the bottom of theanti-sinking plate 1 corresponds to a mounting hole on theflange 2, and thebolt 21 penetrates through the connecting hole and the mounting hole to connect theflange 2 and theanti-sinking plate 1 into a whole;
s3, installing the anchor chain assembly, sleeving the fixinghole 44 on the fixingplate 41 of theanchor chain assembly 4 into the stud 11 on theanti-sinking plate 1, contacting the bottom of the fixingplate 41 with the upper side surface of the cover plate of theanti-sinking plate 1, and locking the fixingplate 41 by matching the nut and the stud 11.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and features in the embodiments and examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (6)
Translated fromChinesePriority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110271540.3ACN113071605B (en) | 2021-03-12 | 2021-03-12 | Anchoring foundation suitable for floating wind turbine and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110271540.3ACN113071605B (en) | 2021-03-12 | 2021-03-12 | Anchoring foundation suitable for floating wind turbine and its construction method |
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| CN113071605Atrue CN113071605A (en) | 2021-07-06 |
| CN113071605B CN113071605B (en) | 2022-10-04 |
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| CN202110271540.3AActiveCN113071605B (en) | 2021-03-12 | 2021-03-12 | Anchoring foundation suitable for floating wind turbine and its construction method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114134891A (en)* | 2022-01-29 | 2022-03-04 | 中国长江三峡集团有限公司 | Screw anchor assembly |
| CN114454999A (en)* | 2022-01-29 | 2022-05-10 | 中国长江三峡集团有限公司 | Spiral type penetration plate anchor and construction method thereof |
| CN114855865A (en)* | 2022-05-20 | 2022-08-05 | 中国电建集团华东勘测设计研究院有限公司 | Tensioning type fan foundation anchored on rock-based seabed and arrangement method |
| US20230024467A1 (en)* | 2021-07-26 | 2023-01-26 | Vicinay Mooring Connectors, S.A. | Anchor device for anchoring a floating structure to the seabed and installation method of the anchor device |
| CN119239837A (en)* | 2024-11-13 | 2025-01-03 | 哈尔滨工业大学(深圳)(哈尔滨工业大学深圳科技创新研究院) | A tension leg spiral anchor group system and a fully submersible offshore wind turbine platform |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN119239837A (en)* | 2024-11-13 | 2025-01-03 | 哈尔滨工业大学(深圳)(哈尔滨工业大学深圳科技创新研究院) | A tension leg spiral anchor group system and a fully submersible offshore wind turbine platform |
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