CN116084446A - Offshore wind power single pile foundation for reinforcing deep soft soil foundation - Google Patents
Offshore wind power single pile foundation for reinforcing deep soft soil foundation Download PDFInfo
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- CN116084446A CN116084446A CN202310115935.3A CN202310115935A CN116084446A CN 116084446 A CN116084446 A CN 116084446A CN 202310115935 A CN202310115935 A CN 202310115935A CN 116084446 A CN116084446 A CN 116084446A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
- E02D27/425—Foundations for poles, masts or chimneys specially adapted for wind motors masts
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/52—Submerged foundations, i.e. submerged in open water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/08—Improving by compacting by inserting stones or lost bodies, e.g. compaction piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/06—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against corrosion by soil or water
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- 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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- Agronomy & Crop Science (AREA)
- Soil Sciences (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention provides an offshore wind power single pile foundation for reinforcing a deep soft soil foundation, and relates to the field of single pile foundations. The offshore wind power single pile foundation comprises a steel pipe pile body and a reinforced foundation, wherein the reinforced foundation comprises a plurality of pile bodies which are connected in a meshed mode, and the pile bodies are any one of cement stirring piles, high-pressure jet grouting piles and vibroflotation gravel piles; the projection shape of the reinforced foundation on the seabed surface is in a grid shape, pile bodies positioned in the middle of the reinforced foundation are densely arranged to form a positioning pile structure, and the steel pipe pile bodies are inserted into the positioning pile structure; the pile body is provided with an inserting section below the seabed surface, and the inserting section of the pile body is gradually decreased in the radial direction away from the steel pipe pile body; the pile body is provided with a turbulent flow section protruding above the seabed surface, and the turbulent flow section of the pile body is arranged outside the steel pipe pile body Zhou Fensan to form a quincuncial pile array. Through the spoiler design of quincuncial pile array, the ocean bottom velocity of flow is disturbed effectively, has avoided the stake week to erode the destruction, has guaranteed the stability of whole single pile basis.
Description
Technical Field
The invention relates to the technical field of single pile foundations, in particular to an offshore wind power single pile foundation for reinforcing a deep soft soil foundation.
Background
The single pile foundation is widely applied to offshore wind farms, a large-diameter steel pipe pile is driven into the seabed, and the upper end of the steel pipe pile is used for fixedly supporting a tower drum. The single pile foundation bears the environmental load effects of wind, wave, current and the like, particularly, vortex is generated when water flows around the steel pipe pile, and the water facing side and surrounding sediment of the steel pipe pile are vigorously washed, so that a local flushing pit is formed.
The invention patent application of China with the application publication number of CN110439021A and the application publication date of 2019.11.12 discloses an offshore single pile foundation with a cement stirring pile reinforced foundation, in particular a soft soil foundation in which a steel pipe pile is sunk into a seabed, wherein a reinforced foundation formed by an underwater deep cement stirring method is arranged around the steel pipe pile in the soft soil foundation, and the reinforced foundation is a rotator coaxial with the steel pipe pile; the reinforced foundation comprises cement stirring piles and soft soil among the cement stirring piles. And arranging a layer of pile circumference anti-scouring structure around the periphery of the steel pipe pile on the upper surface of the soft soil foundation, wherein the pile circumference anti-scouring structure is a covering layer formed by paving sand quilt, polished stone, soft blocks, interlocking blocks or solidified soil.
The offshore single pile foundation with the cement stirring pile reinforced foundation in the prior art adopts an underwater cement stirring method to improve the strength and rigidity of soil around the pile, and the pile periphery scour prevention structure is used for protecting soft soil foundation and the reinforced foundation reinforced by the underwater deep cement stirring method.
However, the cement mixing pile and the pile periphery anti-scouring structure are only reinforced and protected from the self structure of the single pile foundation, and the problem that the stability of the whole single pile foundation is reduced is still caused because the pile periphery always has environmental ocean currents and the pile periphery anti-scouring structure is damaged under the long-time scouring action of the ocean currents.
Disclosure of Invention
In order to solve the problems, the invention aims to provide an offshore wind power single pile foundation for reinforcing a deep soft soil foundation, so as to solve the problem that the stability of the whole single pile foundation is reduced because the pile circumference always has environmental ocean currents and the erosion prevention structure of the pile circumference is damaged under the long-time scouring action of the ocean currents.
The technical scheme of the offshore wind power single pile foundation for reinforcing the deep soft soil foundation is as follows:
the offshore wind power single pile foundation for reinforcing the deep soft soil foundation comprises a steel pipe pile body and a reinforcing foundation, wherein the reinforcing foundation comprises a plurality of pile bodies which are connected in a meshed mode, and the pile bodies are any one of cement mixing piles, high-pressure jet grouting piles and vibroflotation gravel piles;
the projection shape of the reinforced foundation on the seabed surface is in a grid shape, pile bodies positioned in the middle of the reinforced foundation are densely arranged to form a positioning pile structure, and the steel pipe pile body is inserted into the positioning pile structure;
the pile body is provided with an inserting section below the seabed surface, and the inserting section of the pile body is gradually decreased in a radial direction of the reinforcing foundation away from the steel pipe pile body;
the pile body of the reinforced foundation is provided with a turbulent flow section protruding above the seabed surface, and the turbulent flow section of the pile body is arranged outside the steel pipe pile body Zhou Fensan to form a quincuncial pile array.
Further, the projection shape of the reinforcement foundation on the sea bed surface is concentric ring grid shape, polygonal grid shape or special grid shape.
Further, the positioning pile structure is a concentric ring pile structure and comprises an inner ring pile and an outer ring pile which are concentrically arranged, an annular interval is formed between the inner ring pile and the outer ring pile, and the steel pipe pile body is fixed in the annular interval in an inserting manner.
Further, the positioning pile structure further comprises a center cross pile, wherein the center cross pile is arranged at the center of the inner ring pile, and the center cross pile is connected with the inner ring pile in a meshed mode.
Further, the reinforced foundation comprises a first-stage pile body, a second-stage pile body and a third-stage pile body which are sequentially arranged from the center outwards, wherein the length of an insertion section of the first-stage pile body is a, and the length of an insertion section of the second-stage pile body is b, and a/3 a is less than or equal to a-b is less than or equal to 1/2a; the length of the insertion section of the three-stage pile body is c, and b/3 a is less than or equal to b-c is less than or equal to 1/2a.
Further, the height of the spoiler of the pile body is any size between 1m and 2 m.
Further, the diameter of the steel pipe pile body is D, and the diameter of the reinforcing foundation is D, wherein D is more than or equal to 2.5D and less than or equal to 5D.
Further, the diameter of the pile body is gradually reduced in the radial direction of the reinforcement foundation away from the steel pipe pile body.
Further, the diameter of the pile body is e, and the engagement size between two adjacent pile bodies is f, wherein f is more than or equal to 0.2e and less than or equal to 0.3e.
Furthermore, the positioning pile structure is a dense grid pile structure, the projection shape of the dense grid pile structure on the seabed surface is regular polygon, and the dense grid pile structure and the steel pipe pile body are concentrically distributed.
The beneficial effects are that: this a marine wind power single pile foundation for strengthening deep soft soil foundation has adopted the design form of steel-pipe pile body and reinforcement basis, and wherein, the reinforcement basis comprises a plurality of interlock continuous pile body, and the overall shape of reinforcement basis is the grid form, and in the steel-pipe pile body inserts the locating pile structure at reinforcement basis middle part. By utilizing the interaction between the grid-shaped distributed pile bodies and the deep soft soil, the reinforced foundation and the deep soft soil layer are effectively combined, the bearing capacity of the whole foundation can be improved by compacting the pile soil, and the deformation resistance of the single pile foundation caused by environmental load is improved.
Because the pile body is provided with the insertion section below the seabed surface, the length of the insertion section gradually decreases in the radial direction away from the steel pipe pile body, and the engineering quantity and cost of the reinforced foundation are reduced on the premise of meeting the requirements of bearing capacity, deformation and rigidity of the foundation. And, the part pile body of reinforcement basis still has the spoiler section above the protruding seabed surface, and the spoiler section of pile body is arranged into the quincuncial pile array in the outer Zhou Fensan of steel-pipe pile body.
Through the spoiler design of quincuncial pile array, can perturb the seabed velocity of flow effectively, change the dynamic performance of ocean current around the single pile foundation, can weaken the power of bottom ocean current after the quincuncial pile array, and then reduce the scouring damage that the ocean current caused around the steel-pipe pile body. The reinforced foundation not only reinforces and protects the self structure of the single pile foundation, but also forms a disturbance area through the external quincuncial pile array, thereby avoiding the condition that the pile Zhou Chongshua is damaged under the long-time scouring action of ocean currents and ensuring the stability of the whole single pile foundation.
Drawings
FIG. 1 is a schematic top view of a single pile foundation of embodiment 1 of the offshore wind power single pile foundation for reinforcing a deep soft foundation according to the present invention;
FIG. 2 is a schematic cross-sectional view of a single pile foundation of embodiment 1 of the offshore wind power single pile foundation for reinforcing a deep soft foundation according to the present invention;
FIG. 3 is a schematic view of pile body distribution inside the steel pipe pile body of FIG. 1;
fig. 4 is a schematic top view of a single pile foundation in another embodiment of an offshore wind power single pile foundation for reinforcing a deep soft foundation according to the present invention.
In the figure: 1-steel pipe pile body, 2-reinforcement foundation, 20-pile body, 200-spoiler, 201-primary pile body, 202-secondary pile body, 203-tertiary pile body, 21-location pile structure, 22-inner ring pile, 23-outer ring pile, 24-center cross pile, 3-seabed surface, 4-intensive net pile structure.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
In the specific embodiment 1 of the offshore wind power single pile foundation for reinforcing the deep soft soil foundation, as shown in fig. 1 to 3, the offshore wind power single pile foundation for reinforcing the deep soft soil foundation comprises a steel pipe pile body 1 and a reinforcing foundation 2, wherein the reinforcing foundation 2 comprises a plurality of pile bodies 20 which are connected in a meshed manner, and the pile bodies 20 are any one of cement stirring piles, high-pressure jet grouting piles and vibroflotation gravel piles; the projection shape of the reinforcement foundation 2 on the seabed surface 3 is grid-shaped, pile bodies 20 positioned in the middle of the reinforcement foundation 2 are densely arranged to form a positioning pile structure 21, and the steel pipe pile body 1 is inserted into the positioning pile structure 21.
The pile body 20 is provided with an inserting section below the seabed surface 3, and the inserting section of the pile body 20 is gradually decreased in a radial direction of the reinforcing foundation 2 away from the steel pipe pile body 1; the pile body 20 of the part of the reinforced foundation 2 is also provided with a spoiler 200 protruding above the seabed surface 3, and the spoiler 200 of the pile body 20 is arranged outside the Zhou Fensan of the steel pipe pile body 1 to form a quincuncial pile array.
This a marine wind-powered electricity generation single pile foundation for consolidating deep soft soil foundation has adopted the design form of steel-pipe pile body 1 and reinforcement basis 2, and wherein, the reinforcement basis 2 comprises the pile body 20 that a plurality of interlock link to each other, and the overall shape of reinforcement basis 2 is the grid form, and in steel-pipe pile body 1 inserts the location stake structure 21 in reinforcement basis 2 middle part. By utilizing the interaction between the grid-shaped distributed pile bodies 20 and the deep soft soil, the reinforced foundation 2 and the deep soft soil layer are effectively combined, the bearing capacity of the whole foundation can be improved by compacting the pile soil, and the deformation resistance of the single pile foundation caused by environmental load is improved.
Because the pile body 20 is provided with the insertion section below the seabed surface 3, the length of the insertion section gradually decreases in the radial direction away from the steel pipe pile body 1, and the engineering quantity and cost of the reinforced foundation 2 are reduced on the premise of meeting the requirements of bearing capacity, deformation and rigidity of the foundation. And, the pile body 20 of the part of the reinforcement foundation 2 is also provided with a spoiler 200 protruding above the seabed surface 3, and the spoiler 200 of the pile body 20 is arranged into a quincuncial pile array outside Zhou Fensan of the steel pipe pile body 1.
By the design of the turbulent flow section 200 of the quincuncial pile array, the ocean bottom flow velocity can be effectively disturbed, the power performance of ocean currents around the single pile foundation is changed, the power of the ocean currents at the bottom layer can be weakened after the quincuncial pile array is adopted, and further the scouring damage of the ocean currents to the periphery of the steel pipe pile body 1 is reduced. The reinforced foundation 2 not only reinforces and protects the self structure of the single pile foundation, but also forms a disturbance area through an external quincuncial pile array, thereby avoiding the condition that the pile Zhou Chongshua is damaged under the long-time scouring action of ocean currents and ensuring the stability of the whole single pile foundation.
In this embodiment, the projection shape of the reinforcement foundation 2 on the seabed surface 3 is a concentric ring grid, specifically, the reinforcement foundation 2 is formed by intersecting eight circular piles and eight radial straight piles, and the eight radial straight piles are distributed at a center angle of 45 degrees. The radial straight piles and the circular piles are intersected to form a plurality of circular arc-shaped areas, soft soil is filled in the plurality of circular arc-shaped areas, interaction between the reinforced foundation 2 and deep soft soil is enhanced, and deformation resistance caused by environmental load is improved.
The reinforced foundation 2 is designed into concentric ring grid shapes, so that the structural integrity of the reinforced foundation 2 is guaranteed, parameters of a deep soft soil foundation can be effectively improved, and pile slipping risks are prevented. Correspondingly, the positioning pile structure 21 is a concentric ring pile structure and comprises an inner ring pile 22 and an outer ring pile 23 which are concentrically arranged, an annular space is formed between the inner ring pile 22 and the outer ring pile 23, and the steel pipe pile body 1 is fixedly inserted into the annular space between the inner ring pile 22 and the outer ring pile 23.
The spud structure 21 further comprises a central cross pile 24, the central cross pile 24 is arranged in the central position of the inner ring pile 22, and the central cross pile 24 is in meshed connection with the inner ring pile 22. The concentric ring pile structure plays a role in clamping and fixing the pipe wall of the steel pipe pile body 1 from inside to outside, and the center cross pile 24 generates supporting force to the inner ring pile 22 from inside, so that the structural reliability of the inner ring pile 22 is ensured, and a stable limiting effect is ensured to be formed on the steel pipe pile body 1. The whole reinforced foundation 2 has an effective reinforcing effect on the soft soil foundation inside the steel pipe pile body 1 and the soft soil foundation outside a certain range, so that soil layer parameters of the deep soft soil foundation are improved, pile surrounding soil spring parameters are improved after pile soil is compacted in principle, and bearing capacity and deformation requirements of the foundation are guaranteed. In addition, the pile diameter of the steel pipe pile body 1 can be reduced adaptively, so that the engineering quantity is optimized, and the investment is reduced; in addition, the peculiar smell and harmful gas in the single pile foundation can be effectively reduced, and peculiar smell prevention measures are saved.
As a further preferable scheme, the reinforced foundation 2 comprises a primary pile body 201, a secondary pile body 202 and a tertiary pile body 203 which are sequentially arranged from the center outwards, as shown in fig. 2, the length of an insertion section of the primary pile body 201 is a, and the length of an insertion section of the secondary pile body 202 is b, wherein a/3 a is less than or equal to a-b is less than or equal to 1/2a; the length of the insertion section of the three-stage pile body 203 is c, and b-c is more than or equal to 1/3a and less than or equal to 1/2a. In this embodiment, the pile bodies 20 are arranged in an alternate combination of length, the length of the insertion section of the pile bodies 20 is gradually reduced from the center of the reinforced foundation 2 to the periphery, the relative reduction ratio of the length of the insertion section of each pile body 20 is 1/3 to 1/2, and the engineering quantity and cost of the reinforced foundation 2 are reduced on the premise of meeting the requirements of bearing capacity, deformation and rigidity of the foundation.
In addition, the height of the spoiler 200 of the pile body 20 is any size between 1m and 2 m. The diameter of the steel pipe pile body 1 is D, and the diameter of the reinforced foundation 2 is D, wherein D is more than or equal to 2.5D and less than or equal to 5D. The diameter of the pile body 20 is gradually reduced in the radial direction of the reinforcing foundation 2 away from the steel pipe pile body 1. The diameter of each pile body 20 is e, and the engagement size between two adjacent pile bodies 20 is f which is more than or equal to 0.2e and less than or equal to 0.3e.
In this embodiment, the height of the spoiler 200 of the pile body 20 is 1.5m, and by designing the spoiler 200 of the quincuncial pile array, the submarine flow velocity can be effectively disturbed, so as to reduce the scouring damage of the ocean current to the periphery of the steel pipe pile body 1. Specifically, the diameter of the reinforced foundation 2 is d=5d, the diameter of the pile body 20 is e, the engagement size between two adjacent pile bodies 20 is f, and f=0.25e, so that the integrity of the engagement connection between the pile bodies 20 is ensured.
In other specific embodiments of the offshore wind power single pile foundation for reinforcing a deep soft soil foundation, in order to meet different practical requirements, the projection shape of the reinforcing foundation on the seabed surface can be polygonal grid shape or special-shaped grid shape. As shown in fig. 4, the projection shape of the reinforcement foundation on the seabed surface is an octagonal grid shape, correspondingly, the positioning pile structure is a dense grid pile structure 4, the projection shape of the dense grid pile structure 4 on the seabed surface is a regular quadrangle, and the dense grid pile structure 4 and the steel pipe pile body 1 are concentrically distributed.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (10)
1. The offshore wind power single pile foundation for reinforcing the deep soft soil foundation is characterized by comprising a steel pipe pile body and a reinforcing foundation, wherein the reinforcing foundation comprises a plurality of pile bodies which are connected in a meshed mode, and the pile bodies are any one of cement stirring piles, high-pressure jet grouting piles and vibroflotation gravel piles;
the projection shape of the reinforced foundation on the seabed surface is in a grid shape, pile bodies positioned in the middle of the reinforced foundation are densely arranged to form a positioning pile structure, and the steel pipe pile body is inserted into the positioning pile structure;
the pile body is provided with an inserting section below the seabed surface, and the inserting section of the pile body is gradually decreased in a radial direction of the reinforcing foundation away from the steel pipe pile body;
the pile body of the reinforced foundation is provided with a turbulent flow section protruding above the seabed surface, and the turbulent flow section of the pile body is arranged outside the steel pipe pile body Zhou Fensan to form a quincuncial pile array.
2. Offshore wind power single pile foundation for reinforcing deep soft soil foundations according to claim 1, characterized in that the projected shape of the reinforcing foundation on the seabed surface is a concentric ring grid, a polygonal grid or a special grid.
3. The offshore wind power single pile foundation for reinforcing a deep soft soil foundation according to claim 2, wherein the positioning pile structure is a concentric ring pile structure comprising an inner ring pile and an outer ring pile which are concentrically arranged, an annular space is formed between the inner ring pile and the outer ring pile, and the steel pipe pile body is inserted and fixed in the annular space.
4. An offshore wind power single pile foundation for reinforcing a deep soft soil foundation according to claim 3, wherein the positioning pile structure further comprises a center cross pile, the center cross pile is arranged at the center of the inner ring pile, and the center cross pile is connected with the inner ring pile in a meshed manner.
5. The offshore wind power single pile foundation for reinforcing a deep soft soil foundation according to claim 2, wherein the reinforcing foundation comprises a primary pile body, a secondary pile body and a tertiary pile body which are sequentially arranged from the center outwards, the length of an insertion section of the primary pile body is a, the length of an insertion section of the secondary pile body is b, and a/3 a-b is less than or equal to 1/2a; the length of the insertion section of the three-stage pile body is c, and b/3 a is less than or equal to b-c is less than or equal to 1/2a.
6. Offshore wind power single pile foundation for reinforcing deep soft soil foundations according to claim 1, wherein the height of the spoiler of the pile body is of any size between 1m and 2 m.
7. The offshore wind power single pile foundation for reinforcing a deep soft soil foundation according to claim 1, wherein the diameter of the steel pipe pile body is D, and the diameter of the reinforced foundation is D, and D is 2.5 d.ltoreq.d.ltoreq.5d.
8. Offshore wind power single pile foundation for reinforcing a deep soft foundation according to claim 1, characterized in that the diameter of the pile body is arranged in a stepwise decreasing manner in the radial direction of the reinforcing foundation away from the steel pipe pile body.
9. The offshore wind power single pile foundation for reinforcing a deep soft soil foundation according to claim 1, wherein the diameter of each pile body is e, and the engagement size between two adjacent pile bodies is f which is more than or equal to 0.2e and less than or equal to 0.3e.
10. The offshore wind power single pile foundation for reinforcing a deep soft soil foundation according to claim 1, wherein the positioning pile structure is a dense grid pile structure, the projection shape of the dense grid pile structure on the sea bed surface is regular polygon, and the dense grid pile structure and the steel pipe pile body are concentrically distributed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310115935.3A CN116084446A (en) | 2023-02-13 | 2023-02-13 | Offshore wind power single pile foundation for reinforcing deep soft soil foundation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310115935.3A CN116084446A (en) | 2023-02-13 | 2023-02-13 | Offshore wind power single pile foundation for reinforcing deep soft soil foundation |
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| CN116084446A true CN116084446A (en) | 2023-05-09 |
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| CN202310115935.3A Pending CN116084446A (en) | 2023-02-13 | 2023-02-13 | Offshore wind power single pile foundation for reinforcing deep soft soil foundation |
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- 2023-02-13 CN CN202310115935.3A patent/CN116084446A/en active Pending
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