CN115434359B - Offshore wind turbine foundation - Google Patents
Offshore wind turbine foundation Download PDFInfo
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- CN115434359B CN115434359B CN202211119479.1A CN202211119479A CN115434359B CN 115434359 B CN115434359 B CN 115434359B CN 202211119479 A CN202211119479 A CN 202211119479A CN 115434359 B CN115434359 B CN 115434359B
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- 239000004567 concrete Substances 0.000 claims abstract description 68
- 238000004873 anchoring Methods 0.000 claims description 8
- 239000004570 mortar (masonry) Substances 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract description 15
- 235000017491 Bambusa tulda Nutrition 0.000 abstract description 15
- 241001330002 Bambuseae Species 0.000 abstract description 15
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract description 15
- 239000011425 bamboo Substances 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 2
- 238000010248 power generation Methods 0.000 abstract description 2
- 238000005452 bending Methods 0.000 description 11
- 239000004575 stone Substances 0.000 description 6
- 238000005336 cracking Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
Classifications
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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
- E02D27/44—Foundations for machines, engines or ordnance
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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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
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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
Abstract
The invention relates to the technical field of wind power generation, in particular to an offshore wind turbine foundation, which comprises a concrete base and a pressure-bearing cylinder, wherein a groove is formed in the middle of the concrete base, and the pressure-bearing cylinder is fixedly arranged at the upper part of the groove; the lower extreme of support column passes the inner chamber of pressure-bearing section of thick bamboo and inserts the lower part of recess, insert in the clearance between the inner chamber wall of support column lateral wall and pressure-bearing section of thick bamboo and be equipped with a plurality of clamps, each clamp surrounds the axial interval arrangement of support column, each clamp's one side all is in butt with the lateral wall of support column, each clamp's opposite side all is in butt with the inside wall of pressure-bearing section of thick bamboo, thereby hold the support column in the recess, when the support column receives moment effect, the tension side of support column will act on the clamp, consequently the support column only can cause the microslip between clamp and the support column to the clamp applied pulling force of support column, thereby avoided pouring the outside concrete upwarp of support column cracked.
Description
Technical Field
The invention relates to the technical field of wind power generation, in particular to an offshore wind turbine foundation.
Background
The gravity type foundation is one of main foundation types in the offshore wind turbine supporting structure, the gravity type foundation comprises a concrete base, an installing groove for supporting columns to be inserted is formed in the middle of the concrete base, an opening of the installing groove faces upwards, when the offshore wind turbine supporting structure is used, a wind turbine is installed on the upper portion of each supporting column, the lower end of each supporting column is inserted into the corresponding installing groove, and then concrete is poured into a gap between each supporting column and the corresponding installing groove and the upper end of the concrete base, so that the supporting columns are fixedly connected with the concrete base.
Compared with a land wind farm, the foundation structure of the offshore wind turbine has high gravity center, large horizontal load and large overturning bending moment, and meanwhile, environmental influence factors such as waves, ocean currents, seabed geology, sea ice and the like are considered, so that the concrete base serving as the foundation of the offshore wind turbine is greatly affected by the bending moment load of the wind turbine. When the concrete base resists the overturning moment generated by the upper fan load and the external environment load by means of the self weight and is subjected to bending moment, as shown in fig. 1, the compression side of the support column 2 applies compressive stress to the first side of the concrete base 1, the tension side of the support column 2 applies upward tensile stress to the second side of the concrete base 1, the tensile strength of the concrete is far lower than the compressive strength of the concrete, and the concrete at the upper end of the concrete base 1 lacks downward constraint force, so that the upper end of the concrete poured outside the tension side of the support column 2 is easy to be subjected to upward tensile force to be tilted and cracked, and in fig. 1, 1a is a schematic diagram of the concrete base 1 easy to crack when the support column 2 is subjected to bending moment to the left; along with the change of wind direction, the tension side position of the support column 2 is changed continuously, so that all parts of the upper end of the concrete base 1, which are positioned on the periphery side of the support column 2, are cracked; after the concrete at the upper end of the concrete base 1 is cracked, the concrete at the middle part of the concrete base 1 lacks downward constraint force, so that the middle part of the concrete base 1 is cracked downwards when the support column 2 is subjected to bending moment again; fig. 2 is a schematic view showing that after the uppermost layer of the concrete foundation 1 is completely cracked, the middle part of the concrete foundation 1 starts to crack. Therefore, the upper end of the concrete base 1 is cracked, and the normal operation of the offshore wind power equipment is seriously affected.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: in the offshore wind power foundation in the prior art, the upper end of concrete poured outside the tension side of the support column is easy to be lifted and cracked upwards due to upward tension, so that the connection between the support column and the gravity foundation is loose.
In order to solve the technical problems, the invention aims to provide an offshore wind turbine foundation, which comprises a concrete base and a pressure-bearing cylinder, wherein a first groove is formed in the middle of the concrete base, and the pressure-bearing cylinder is fixedly arranged on the upper part of the first groove;
the lower extreme of support column passes the inner chamber of pressure-bearing section of thick bamboo and inserts the lower part of first recess, the lateral wall of support column with the inner chamber wall interval arrangement of pressure-bearing section of thick bamboo, the lateral wall of support column with insert in the interval between the inner chamber wall of pressure-bearing section of thick bamboo and be equipped with a plurality of clamps, each the clamp encircles the axial interval arrangement of support column, each one side of clamp all with the lateral wall butt of support column, each the opposite side of clamp all with the inside wall butt of pressure-bearing section of thick bamboo.
As a preferred scheme, each clamping piece is plate-shaped, the inner cavity wall of the pressure-bearing cylinder is provided with a plurality of accommodating grooves matched with the widths of the corresponding clamping pieces, each accommodating groove is communicated with the interval, the bottom wall of each accommodating groove is a first inclined surface inclined upwards in a direction away from the supporting column, one side, opposite to the corresponding first inclined surface, of each clamping piece is a second inclined surface inclined downwards in a direction close to the supporting column, and each first inclined surface is respectively attached to the corresponding second inclined surface.
Preferably, the roughness of each first inclined surface and the roughness of each second inclined surface are larger than the roughness of the opposite side of the corresponding clamping piece to the support column.
Preferably, the inclination angle of the first inclined surface and the second inclined surface in the up-down direction is 3 ° or more and 5 ° or less.
Preferably, a plurality of anchoring pieces are fixedly connected to the outer side of the pressure-bearing cylinder, the anchoring pieces are arranged around the axial direction of the pressure-bearing cylinder at intervals, and one end, away from the pressure-bearing cylinder, of each anchoring piece is buried in the concrete base.
Preferably, the anchors are radially arranged around the axis of the pressure-bearing cylinder; reinforcing rib plates are fixedly connected between the anchoring pieces and the outer side walls of the supporting columns.
Preferably, the outer side of the lower end of the supporting column is arranged at intervals with the groove wall of the first groove, and concrete is poured in a gap between the outer side of the lower end of the supporting column and the groove wall of the first groove.
As a preferable scheme, a plurality of ballast tanks are arranged in the concrete base, the ballast tanks are arranged at intervals around the axial direction of the first groove, and mortar is filled in the ballast tanks; the pressure-bearing cylinders are fixedly connected with the bulkhead of each ballast tank.
As a preferred scheme, the support column is a cylinder, a grouting pipe is arranged in the cylinder, a plurality of second grooves with downward openings are arranged at intervals at the bottom of the concrete base, grouting holes are formed in the bottom wall of each second groove, and each grouting hole is communicated with the grouting pipe.
Preferably, mortar is filled in the lower part of the cylinder cavity of the supporting column.
Compared with the prior art, the invention has the beneficial effects that:
the fan foundation comprises a concrete base and a pressure-bearing cylinder, wherein a first groove is formed in the middle of the concrete base, and the pressure-bearing cylinder is fixedly arranged on the upper part of the first groove; the lower end of the support column penetrates through the inner cavity of the pressure-bearing cylinder and is inserted into the lower part of the first groove, the outer side wall of the support column is arranged at intervals with the inner cavity wall of the pressure-bearing cylinder, a plurality of clamping pieces are inserted into the intervals between the outer side wall of the support column and the inner cavity wall of the pressure-bearing cylinder, each clamping piece is arranged around the axial direction of the support column at intervals, one side of each clamping piece is abutted with the outer side wall of the support column, the other side of each clamping piece is abutted with the inner side wall of the pressure-bearing cylinder, the support column is clamped in the first groove, when the support column is subjected to bending moment, the tension side of the support column applies tension to the clamping pieces, and as the clamping pieces are inserted into the gaps between the outer side wall of the support column and the inner cavity wall of the pressure-bearing cylinder, the upward tension applied by the support column to the clamping pieces only causes micro-sliding between the clamping pieces and the support column and is not transmitted to the concrete base, and the fan foundation avoids upward tilting and cracking of the upper end of concrete poured outside the support column.
Drawings
FIG. 1 is a schematic illustration of the principle of cracking of concrete in the uppermost layer of a concrete foundation;
FIG. 2 is a schematic diagram of the principle of cracking of the middle part of the concrete foundation after the uppermost layer of the concrete foundation is cracked;
FIG. 3 is a schematic view of the structure of the fan foundation of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3 at C;
FIG. 5 is a schematic view of the retainer inserted in the gap between the outer sidewall of the support column and the inner cavity wall of the pressure cylinder;
FIG. 6 is a cross-sectional view taken at A-A of FIG. 3;
FIG. 7 is a cross-sectional view taken at B-B of FIG. 3;
FIG. 8 is a top view of the pressure cylinder;
FIG. 9 is a side view of the catch;
FIG. 10 is a front view of the catch;
FIG. 11 is an enlarged view of a portion of the bottom of a concrete foundation;
in the figure, 1, a concrete base; 11. a first groove; 12. a ballast tank; 13. a second groove; 131. grouting holes; 2. a support column; 3. a pressure-bearing cylinder; 31. a receiving groove; 311. a first inclined surface; 32. an anchor; 33. reinforcing rib plates; 4. a clamping piece; 41. a second inclined surface; 5. grouting pipe; 6. the seabed.
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 description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "top", "bottom", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements 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. It should be understood that the terms "first," "second," and the like are used herein to describe various information, but such information should not be limited to these terms, which are used merely to distinguish one type of information from another. For example, a "first" message may also be referred to as a "second" message, and similarly, a "second" message may also be referred to as a "first" message, without departing from the scope of the invention.
As shown in fig. 3 to 11, a preferred embodiment of the offshore wind turbine foundation of the present invention comprises a concrete base 1 and a pressure-bearing cylinder 3, wherein a first groove 11 is formed in the middle of the concrete base 1, the first groove 11 is used for inserting a support column 2, and the pressure-bearing cylinder 3 is fixedly arranged on the upper portion of the first groove 11; the lower extreme of support column 2 passes the inner chamber of pressure-bearing section of thick bamboo 3 and inserts the lower part of first recess 11, and the lateral wall of support column 2 and the inner chamber wall interval arrangement of pressure-bearing section of thick bamboo 3 insert in the interval between the lateral wall of support column 2 and the inner chamber wall of pressure-bearing section of thick bamboo 3 and be equipped with a plurality of clamps 4, each clamp 4 encircles the axial interval arrangement of support column 2, and each clamp 4's one side all is with the lateral wall butt of support column 2, and each clamp 4's opposite side all is with the inside wall butt of pressure-bearing section of thick bamboo 3. When the support column 2 is acted by bending moment, the tension side of the support column 2 acts on the clamping piece 4, and as the clamping piece 4 is inserted into a gap between the outer side wall of the support column 2 and the inner cavity wall of the pressure-bearing cylinder 3, the upward tension applied by the support column 2 to the clamping piece 4 only causes micro sliding between the clamping piece 4 and the support column 2 and is not transmitted to the concrete base 1; therefore, the fan foundation of the present invention prevents the upper end of the concrete poured outside the support column 2 from being tilted upward and chipped.
Specifically, the pressure-bearing cylinder 3 and the first groove 11 are coaxially arranged, the outer side of the lower end of the support column 2 and the groove wall of the first groove 11 are arranged at intervals, and concrete is poured in a gap between the outer side of the lower end of the support column 2 and the groove wall of the first groove 11. The pressure-bearing cylinder 3 is arranged above the gap between the outer side of the lower end of the support column 2 and the wall of the first groove 11, so that the concrete of the pressure-bearing cylinder 3 at the lower end of the pressure-bearing cylinder 3 exerts downward restraining force, and therefore, the concrete below the pressure-bearing cylinder 3 cannot tilt upwards and crack when the support column 2 is subjected to bending moment.
Wherein, each clamping piece 4 is plate-shaped, the inner cavity wall of the pressure-bearing cylinder 3 is provided with a plurality of accommodating grooves 31 matched with the width of the corresponding clamping piece 4, each accommodating groove 31 is communicated with the above space, the bottom wall of each accommodating groove 31 is a first inclined surface 311 inclined upwards in a direction away from the support column 2, one side of each clamping piece 4 opposite to the corresponding first inclined surface 311 is a second inclined surface 41 inclined downwards in a direction close to the support column 2, and each first inclined surface 311 is respectively attached to the corresponding second inclined surface 41.
Specifically, as shown in fig. 4 and 5, the inclination angles of the first inclined surface 311 and the second inclined surface 41 are matched, the greater the downward movement distance of the clamping member 4, the greater the extrusion force of the clamping member 4 on the support column 2, and the tighter the support column 2 is clamped; the first inclined surface 311 and the second inclined surface 41 are arranged to adjust the clamping degree of the clamping piece 4 on the support column 2.
Further, the inclination angles of the first inclined surface 311 and the second inclined surface 41 in the up-down direction are 3 ° or more and 5 ° or less, and the static friction force in the vertical direction applied to the second inclined surface 41 by the pressure-bearing cylinder 3 through the first inclined surface 311 is large; moreover, the contact surface between the support column 2 and the clamping member 4 is in line contact, so when the support column 2 applies an upward pulling force to the clamping member 4 due to a bending moment, the friction force between the support column 2 and the clamping member 4 is smaller than the friction force between the first inclined surface 311 and the second inclined surface 41, and therefore, the support column 2 and the clamping member 4 slightly slide, and the clamping member 4 and the pressure-bearing cylinder 3 remain stationary.
Further, the roughness of each first inclined surface 311 and the roughness of each second inclined surface 41 are larger than those of the opposite side of the corresponding clamping piece 4 to the support column 2, so that the static friction self-locking performance between the first inclined surfaces 311 and the second inclined surfaces 41 is further improved. Specifically, each of the first inclined surfaces 311 and each of the second inclined surfaces 41 is sandblasted.
In other embodiments of the present invention, the opposite side of the clamping piece 4 to the pressure-bearing cylinder 3 is an arc surface attached to the inner side surface of the pressure-bearing cylinder 3, and the arc surface is in surface contact with the inner side surface of the pressure-bearing cylinder 3, so that the friction force between the clamping piece 4 and the pressure-bearing cylinder 3 is greater than the friction force between the clamping piece 4 and the support column 2; in other embodiments of the present invention, the retaining member 4 may be a column or a ball, and when the retaining member 4 is configured as a column or a ball, the retaining member 4 can still provide a radial constraint force to the support column 2, so long as the retaining member 4 does not slide out of the gap between the support column 2 and the retaining member 4, and the support column 2 is prevented from tilting, even if the retaining member 4 slides upward relative to the pressure-bearing cylinder 3 when the support column 2 applies an upward tensile force to the retaining member 4 due to a bending moment.
In this embodiment, a plurality of anchoring members 32 are fixedly connected to the outer side of the pressure-bearing cylinder 3, each anchoring member 32 is arranged around the axial direction of the pressure-bearing cylinder 3 at intervals, and one end of each anchoring member 32, which is far away from the pressure-bearing cylinder 3, is buried in the concrete base 1. Thereby ensuring the connection strength between the pressure-bearing cylinder 3 and the concrete base 1.
Further, each anchor 32 is radially arranged around the axis of the pressure-bearing cylinder 3; reinforcing ribs 33 are fixedly connected between each anchor 32 and the outer side wall of the support column 2. Thereby ensuring the connection strength between each anchor 32 and the pressure-bearing cylinder 3. Specifically, both ends of the reinforcing rib 33 are welded to the upper end of the corresponding anchor 32 and the outside of the pressure-receiving cylinder 3, respectively.
In the embodiment, a plurality of ballast tanks 12 are arranged in the concrete base 1, each ballast tank 12 is arranged at intervals around the axial direction of the first groove 11, and each ballast tank 12 is filled with mortar; the pressure-receiving cylinders 3 are fixedly connected to the bulkheads of the respective ballast tanks 12. Specifically, each of the bulkheads of the ballast tanks 12 is of reinforced concrete construction.
Because the bottom area of the concrete base 1 is large, and meanwhile, the rigidity of the concrete base 1 is large, the requirements on the whole and local flatness of the foundation are high, and poor contact of the large bottom area can occur during installation, so that the bearing capacity of the concrete base 1 is affected. In this embodiment, as shown in fig. 3 and 11, the support column 2 is a cylinder, a grouting pipe 5 is disposed in the cylinder, a plurality of second grooves 13 with downward openings are disposed at intervals at the bottom of the concrete base 1, grouting holes 131 are disposed at the bottom wall of each second groove 13, and each grouting hole 131 is communicated with the grouting pipe 5. After the concrete foundation 1 is placed on the seabed 6, each second groove 13 and the seabed form a closed grouting space, the top of the closed grouting space is connected with the grouting holes 131, grouting material can enter the closed grouting space through the grouting holes 131, and the grouting material flows in the closed grouting space by pressure and fills all the spaces and crushed stone gaps. Grouting the closed grouting space comprises two steps: firstly, estimating the size of the crushed stone which can be accommodated by calculating the porosity of the crushed stone, stopping grouting when the grouting amount reaches the value, and waiting for initial setting; and (3) grouting again after the grouting material in the first step is initially set, filling the closed grouting space, and completing the whole grouting process after the grouting material is set. It should be noted that, the grouting does not require filling of all the crushed stone spaces, and the effect of improving the stability of crushed stone can be achieved only by filling part of the crushed stone spaces.
In order to further improve the rigidity of the support column 2 and avoid elastic deformation of the support column 2, mortar is filled in the lower part of the cylinder cavity of the support column 2.
In summary, according to the offshore wind turbine foundation disclosed by the invention, the middle part of the concrete base 1 is provided with the first groove 11 for inserting the supporting column 2, the pressure-bearing cylinder 3 is coaxially arranged at the upper part of the first groove 11, and the outer side of the pressure-bearing cylinder 3 is fixedly connected with the concrete base 1; the lower extreme of support column 2 passes the inner chamber of pressure-bearing section of thick bamboo 3 and inserts the lower part of first recess 11, and the lateral wall of support column 2 and the inner chamber wall interval arrangement of pressure-bearing section of thick bamboo 3 insert in the clearance between the lateral wall of support column 2 and the inner chamber wall of pressure-bearing section of thick bamboo 3 and be equipped with a plurality of clamps 4, each clamp 4 encircles the axial interval arrangement of support column 2, and each clamp 4's one side all is with the lateral wall butt of support column 2, and each clamp 4's opposite side all is with the inside wall butt of pressure-bearing section of thick bamboo 3. Therefore, the support column 2 is clamped in the first groove 11, when the support column 2 is subjected to bending moment, the tension side of the support column 2 acts on the clamping piece 4, and as the clamping piece 4 is inserted into a gap between the outer side wall of the support column 2 and the inner cavity wall of the pressure-bearing cylinder 3, the upward tension applied by the support column 2 to the clamping piece 4 only causes the clamping piece 4 to slightly slide upwards and not to be transmitted to the concrete base 1, and therefore, the fan foundation provided by the invention avoids upward tilting and cracking of the upper end of concrete poured outside the support column 2.
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 (6)
1. The offshore wind turbine foundation is characterized by comprising a concrete base (1) and a pressure-bearing cylinder (3), wherein a first groove (11) is formed in the middle of the concrete base (1), and the pressure-bearing cylinder (3) is fixedly arranged on the upper portion of the first groove (11);
the lower end of the support column (2) penetrates through the inner cavity of the pressure-bearing cylinder (3) and is inserted into the lower part of the first groove (11), the outer side wall of the support column (2) is arranged at intervals with the inner cavity wall of the pressure-bearing cylinder (3), a plurality of clamping pieces (4) are inserted into the intervals between the outer side wall of the support column (2) and the inner cavity wall of the pressure-bearing cylinder (3), the clamping pieces (4) are arranged at intervals around the axial direction of the support column (2), one side of each clamping piece (4) is abutted with the outer side wall of the support column (2), and the other side of each clamping piece (4) is abutted with the inner side wall of the pressure-bearing cylinder (3);
each clamping piece (4) is plate-shaped, the inner cavity wall of the pressure-bearing barrel (3) is provided with a plurality of containing grooves (31) matched with the widths of the corresponding clamping pieces (4), each containing groove (31) is communicated with the corresponding interval, the bottom wall of each containing groove (31) is a first inclined surface (311) inclined upwards in the direction away from the supporting column (2), one side of each clamping piece (4) opposite to the corresponding first inclined surface (311) is a second inclined surface (41) inclined downwards in the direction close to the supporting column (2), each first inclined surface (311) is respectively attached to the corresponding second inclined surface (41), the roughness of each first inclined surface (311) and the roughness of each second inclined surface (41) are larger than those of one side of the corresponding clamping piece (4) opposite to the supporting column (2), the outer side of the pressure-bearing barrel (3) is fixedly connected with a plurality of anchors (32), the anchors (32) are arranged around the corresponding second inclined surfaces (41) inclined downwards in the direction close to the supporting column (2), and the axial direction of the anchors (3) is far away from the axial direction of the anchor (32) of the pressure-bearing barrel (3); reinforcing rib plates (33) are fixedly connected between the anchoring pieces (32) and the outer side walls of the supporting columns (2).
2. Offshore wind turbine foundation according to claim 1, wherein the inclination angle of the first inclined surface (311) and the second inclined surface (41) in the up-down direction is 3 ° or more and 5 ° or less.
3. Offshore wind turbine foundation according to claim 1, characterized in that the outer side of the lower end of the support column (2) is arranged at a distance from the groove wall of the first groove (11), and that concrete is poured in the gap between the outer side of the lower end of the support column (2) and the groove wall of the first groove (11).
4. Offshore wind turbine foundation according to claim 1, wherein a plurality of ballast tanks (12) are provided in the concrete foundation (1), each ballast tank (12) being arranged at axial intervals around the first recess (11), each ballast tank (12) being filled with mortar; the pressure-bearing cylinders (3) are fixedly connected with the bulkheads of the ballast tanks (12).
5. Offshore wind turbine foundation according to any of claims 1-4, wherein the support column (2) is a cylinder, a grouting pipe (5) is arranged in the cylinder, a plurality of second grooves (13) with downward openings are arranged at intervals at the bottom of the concrete foundation (1), grouting holes (131) are formed in the bottom wall of each second groove (13), and each grouting hole (131) is communicated with the grouting pipe (5).
6. Offshore wind turbine foundation according to claim 5, characterized in that the lower part of the cylinder cavity of the support column (2) is filled with mortar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211119479.1A CN115434359B (en) | 2022-09-14 | 2022-09-14 | Offshore wind turbine foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211119479.1A CN115434359B (en) | 2022-09-14 | 2022-09-14 | Offshore wind turbine foundation |
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| Publication Number | Publication Date |
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| CN115434359A CN115434359A (en) | 2022-12-06 |
| CN115434359B true CN115434359B (en) | 2023-10-20 |
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| CN202211119479.1A Active CN115434359B (en) | 2022-09-14 | 2022-09-14 | Offshore wind turbine foundation |
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| CN116695771B (en) * | 2023-08-01 | 2023-12-12 | 中国建筑第六工程局有限公司 | Truss type land wind power foundation |
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| CN106638661A (en) * | 2016-11-15 | 2017-05-10 | 天津大学 | Four-cylindrical-foundation combined foundation structure system of concrete support structure |
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| CN209443462U (en) * | 2018-12-04 | 2019-09-27 | 中交第一航务工程局有限公司 | Pile cover for cast-in-place concrete pile steel pile casting |
| CN109537606A (en) * | 2019-01-05 | 2019-03-29 | 北京京水建设集团有限公司 | A kind of slope protection barricade masonry formwork structure |
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