CN115434359A - Offshore wind turbine foundation - Google Patents
Offshore wind turbine foundation Download PDFInfo
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- CN115434359A CN115434359A CN202211119479.1A CN202211119479A CN115434359A CN 115434359 A CN115434359 A CN 115434359A CN 202211119479 A CN202211119479 A CN 202211119479A CN 115434359 A CN115434359 A CN 115434359A
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- 239000004567 concrete Substances 0.000 claims abstract description 70
- 238000004873 anchoring Methods 0.000 claims description 13
- 239000004570 mortar (masonry) Substances 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 4
- 235000017491 Bambusa tulda Nutrition 0.000 claims 4
- 241001330002 Bambuseae Species 0.000 claims 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims 4
- 239000011425 bamboo Substances 0.000 claims 4
- 238000005452 bending Methods 0.000 abstract description 12
- 238000010248 power generation Methods 0.000 abstract description 2
- 238000005336 cracking Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000008859 change 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
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
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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
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- 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
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- Life Sciences & Earth Sciences (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
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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 end of the supporting column penetrates through the inner cavity of the pressure bearing cylinder and is inserted into the lower part of the groove, a plurality of clamping pieces are inserted into a gap between the outer side wall of the supporting column and the inner cavity wall of the pressure bearing cylinder, the clamping pieces are arranged around the axial direction of the supporting column at intervals, one side of each clamping piece is abutted to the outer side wall of the supporting column, the other side of each clamping piece is abutted to the inner side wall of the pressure bearing cylinder, the supporting column is clamped in the groove, when the supporting column is subjected to bending moment, the tensile side of the supporting column acts on the clamping pieces through tensile force, and therefore upward tensile force applied by the supporting column to the clamping pieces can only cause micro sliding between the clamping pieces and the supporting column, and accordingly concrete poured outside the supporting column is prevented from being warped upwards and cracked.
Description
Technical Field
The invention relates to the technical field of wind power generation, in particular to an offshore wind turbine foundation.
Background
Gravity type basis is one of the main basic pattern among the offshore wind turbine bearing structure, and gravity type basis includes the concrete foundation, and the middle part of concrete foundation is equipped with and supplies support column male mounting groove, and the opening of mounting groove is up, and during the use, the fan is installed on the upper portion of support column, and the lower extreme of support column is inserted and is established in the mounting groove, then pours concrete in the clearance of support column and mounting groove and the upper end of concrete foundation for support column and concrete foundation fixed connection.
Compared with an onshore wind power plant, the offshore wind turbine foundation structure is high in gravity center, large in horizontal load and overturning bending moment, and meanwhile, environmental influence factors such as waves, ocean currents, seabed geology and sea ice are considered, so that the concrete foundation serving as the offshore wind turbine foundation is greatly influenced by the bending moment load of the wind turbine. When the concrete foundation is subjected to a bending moment by resisting overturning moment generated by upper fan load and external environment load by virtue of self weight, as shown in fig. 1, a compression side of a support column 2 applies compressive stress to a first side of the concrete foundation 1, a tension side of the support column 2 applies upward tensile stress to a second side of the concrete foundation 1, the tensile strength of the concrete is far lower than that of the concrete, and the concrete at the upper end of the concrete foundation 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 upwards tilted and cracked by upward tensile force, and 1a in fig. 1 is a schematic diagram of a part, which is easy to crack, of the concrete foundation 1 when the support column 2 is subjected to a leftward bending moment; along with the change of the wind direction, the position of the tension side of the support column 2 is changed continuously, so that the part, positioned on the peripheral side of the support column 2, of the upper end of the concrete base 1 is cracked completely; after the concrete at the upper end of the concrete base 1 is cracked, the concrete in the middle of the concrete base 1 lacks downward constraint force, so that when the support column 2 is subjected to bending moment again, the middle of the concrete base 1 is cracked downwards; therefore, the cracks can circulate downwards layer by layer until the support column 2 is separated from the concrete base 1; fig. 2 is a schematic view showing that the middle of the concrete foundation 1 starts to crack after the uppermost layer of the concrete foundation 1 is completely cracked. Therefore, the upper end of the concrete base 1 is cracked, and the normal operation of the offshore wind power equipment is seriously influenced.
Disclosure of Invention
The technical problem to be solved by the invention is 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 easily pulled upwards to tilt and crack upwards, so that the connection between the support column and the gravity type foundation is loosened.
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 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 end of the supporting column penetrates through the inner cavity of the pressure bearing cylinder and is inserted into the lower portion of the groove, the outer side wall of the supporting column and the inner cavity wall of the pressure bearing cylinder are arranged at intervals, a plurality of clamping pieces are inserted into the interval between the outer side wall of the supporting column and the inner cavity wall of the pressure bearing cylinder, each clamping piece surrounds the axial interval of the supporting column, one side of each clamping piece is abutted to the outer side wall of the supporting column, and the other side of each clamping piece is abutted to the inner side wall of the pressure bearing cylinder.
As a preferable scheme, each of the clamping members is plate-shaped, a plurality of accommodating grooves matched with the corresponding clamping members in width are formed in the wall of the inner cavity of the pressure bearing cylinder, each of the accommodating grooves is communicated with the space, the bottom wall of each of the accommodating grooves is a first inclined surface inclined upwards in the direction away from the support column, one side of each of the clamping members opposite to the corresponding first inclined surface is a second inclined surface inclined downwards in the direction close to the support column, and each of the first inclined surfaces is attached to the corresponding second inclined surface.
Preferably, the roughness of each first inclined surface and the roughness of each second inclined surface are both greater than the roughness of the side of the corresponding clamping piece opposite to the supporting column.
Preferably, the first inclined surface and the second inclined surface have an inclination angle in the up-down direction of 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, each anchoring piece is arranged around the axial direction of the pressure bearing cylinder at intervals, and one end, far away from the pressure bearing cylinder, of each anchoring piece is buried in the concrete base.
Preferably, each anchoring piece is radially arranged around the axis of the pressure bearing cylinder; and a reinforcing rib plate is fixedly connected between each anchoring part and the outer side wall of the support column.
Preferably, the outer side of the lower end of the support column and the groove wall of the groove are arranged at intervals, and concrete is poured into a gap between the outer side of the lower end of the support column and the groove wall of the groove.
Preferably, a plurality of ballast tanks are arranged in the concrete base, each ballast tank is arranged around the axial direction of the groove at intervals, and mortar is filled in each ballast tank; the pressure-bearing rings are fixedly connected with the bulkheads of the ballast tanks.
Preferably, the supporting column is a cylinder, grouting pipes are arranged in the cylinder, a plurality of grooves with downward openings are formed in the bottom of the concrete base at intervals, grouting holes are formed in the bottom wall of each 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 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 end of the support column penetrates through the inner cavity of the pressure bearing cylinder and is inserted into the lower part of the groove, the outer side wall of the support column and the inner cavity wall of the pressure bearing cylinder are arranged at intervals, a plurality of clamping pieces are inserted into the interval 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 to the outer side wall of the support column, the other side of each clamping piece is abutted to the inner side wall of the pressure bearing cylinder, so that the support column is clamped in the groove, when the support column is subjected to bending moment, the tensile side of the support column exerts tensile force on each clamping piece, and 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, so that the upward tensile force exerted on the clamping pieces by the support column can only cause slight sliding between the clamping pieces and the support column and cannot be transmitted to a concrete base, and the fan base avoids the upward tilting and cracking of the upper end of concrete poured outside the support column.
Drawings
FIG. 1 is a schematic view of the cracking of concrete at the uppermost layer of a concrete foundation;
FIG. 2 is a schematic view illustrating the cracking of the middle portion of the concrete base after the uppermost layer of the concrete base is completely cracked;
FIG. 3 is a schematic structural view of a wind turbine foundation of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3 at C;
FIG. 5 is a schematic structural diagram of a clamping piece inserted in a gap between the outer side wall of the supporting column and the inner cavity wall of the pressure bearing cylinder;
FIG. 6 isbase:Sub>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 barrel;
FIG. 9 is a side view of the catch;
FIG. 10 is a front view of the catch;
FIG. 11 is an enlarged partial view of the bottom of the concrete foundation;
in the figure, 1, a concrete foundation; 11. a groove; 12. a ballast tank; 13. a groove; 131. grouting holes; 2. a support pillar; 3. a pressure-bearing cylinder; 31. accommodating grooves; 311. a first inclined plane; 32. an anchoring member; 33. a reinforcing rib plate; 4. a retaining member; 41. a second inclined plane; 5. a grouting pipe; 6. the seabed.
Detailed Description
The following detailed description of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, which are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.
As shown in fig. 3 to 11, the preferred embodiment of the offshore wind turbine foundation of the present invention includes a concrete base 1 and a pressure-bearing cylinder 3, wherein a groove 11 is formed in the middle of the concrete base 1, the groove 11 is used for inserting the support column 2, and the pressure-bearing cylinder 3 is fixedly disposed on the upper portion of the groove 11; the lower extreme of support column 2 passes the inner chamber of a pressure-bearing cylinder 3 and inserts the lower part of recess 11, the lateral wall of support column 2 and the inner chamber wall interval arrangement of a pressure-bearing cylinder 3, it is equipped with a plurality of cards and holds 4 to insert in the interval between the lateral wall of support column 2 and the inner chamber wall of a pressure-bearing cylinder 3, each card is held 4 and is encircleed the axial interval arrangement of support column 2, each card is held one side of 4 and is all with the lateral wall butt of support column 2, each card is held the opposite side of 4 and all with the inside wall butt of a pressure-bearing cylinder 3. Therefore, the supporting column 2 is clamped in the groove 11, when the supporting column 2 is subjected to the action of bending moment, the tension side of the supporting column 2 applies tension to the clamping piece 4, and the clamping piece 4 is inserted in the gap between the outer side wall of the supporting column 3 and the inner cavity wall of the pressure-bearing cylinder 3, so that the upward tension applied to the clamping piece 4 by the supporting column 2 only causes micro-sliding between the clamping piece 4 and the supporting column 2 and cannot be transmitted to the concrete base 1; therefore, the fan foundation of the invention avoids the upper end of the concrete poured outside the support column 2 from tilting and cracking upwards.
Specifically, the bearing plate 3 and the groove 11 are coaxially arranged, the outer side of the lower end of the support column 2 and the groove wall of the 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 groove 11. The bearing ring 3 is arranged above a gap between the outer side of the lower end of the support column 2 and the groove wall of the groove 11, so that the concrete at the lower end of the bearing ring 3 exerts downward constraint force, and the concrete below the bearing ring 3 cannot be warped upwards and cracked when the support column 2 is subjected to bending moment.
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 which are matched with the width of the corresponding clamping piece 4, each accommodating groove 31 is communicated with the space, the bottom wall of each accommodating groove 31 is a first inclined surface 311 which inclines upwards to the direction far 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 which inclines downwards to the direction near the supporting 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, and the larger the downward movement distance of the holding member 4 is, the larger the pressing force of the holding member 4 on the supporting column 2 is, and the tighter the supporting column 2 is clamped; the arrangement of the first inclined surface 311 and the second inclined surface 41 can adjust the degree of clamping of the catch 4 to the support column 2.
Further, the inclination angles of the first inclined surface 311 and the second inclined surface 41 in the vertical direction are greater than or equal to 3 ° and less than or equal to 5 °, and the static friction force of the pressure-bearing cylinder 3 in the vertical direction applied to the second inclined surface 41 through the first inclined surface 311 is relatively large; moreover, the contact surface of the support column 2 and the retaining member 4 is in line contact, so when the support column 2 applies an upward pulling force to the retaining member 4 due to a bending moment, the friction force between the support column 2 and the retaining 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 slightly slides with the retaining member 4, and the retaining member 4 and the pressure-bearing cylinder 3 are kept stationary.
Further, the roughness of each first inclined surface 311 and the roughness of each second inclined surface 41 are both greater than the roughness of the side of the corresponding clamping member 4 opposite to the supporting 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 slopes 311 and each of the second slopes 41 are subjected to the blasting.
In other embodiments of the invention, one side of the clamping member 4 opposite to the pressure-bearing cylinder 3 is an arc-shaped surface attached to the inner side surface of the pressure-bearing cylinder 3, and the arc-shaped surface is in surface contact with the inner side surface of the pressure-bearing cylinder 3, so that the friction force between the clamping member 4 and the pressure-bearing cylinder 3 is greater than the friction force between the clamping member 4 and the support column 2; in other embodiments of the present invention, the retaining member 4 may also be a cylindrical body or a ball, and when the retaining member 4 is set to be a cylindrical body or a ball, even if the supporting column 2 applies an upward pulling force to the retaining member 4 due to a bending moment, the retaining member 4 slides upward relative to the pressure bearing cylinder 3, and as long as the retaining member 4 does not slide out of a gap between the supporting column 2 and the retaining member 4, the retaining member 4 can still provide a radial constraint force to the supporting column 2, so as to prevent the supporting column 2 from tilting.
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 pressure-bearing cylinder 3 at intervals in the axial direction, and one end of each anchoring member 32, which is far away from the pressure-bearing cylinder 3, is embedded in the concrete foundation 1. Thereby ensuring the connection strength between the pressure-bearing cylinder 3 and the concrete base 1.
Further, the anchors 32 are radially arranged around the axis of the pressure-bearing cylinder 3; a reinforcing rib plate 33 is fixedly connected between each anchor 32 and the outer side wall of the support column 2. Thereby securing the coupling strength between each anchor 32 and the bearing cylinder 3. Specifically, both ends of the reinforcing rib 33 are welded to the upper end of the corresponding anchor 32 and the outer side of the pressure-receiving cylinder 3, respectively.
In the embodiment, a plurality of ballast tanks 12 are arranged in the concrete base 1, the ballast tanks 12 are arranged around the groove 11 at intervals in the axial direction, and mortar is filled in each ballast tank 12; the pressure rings 3 are fixedly connected to the walls of the respective ballast tanks 12. Specifically, the walls of each ballast tank 12 are of reinforced concrete construction.
Because the bottom area of concrete base 1 is big, and concrete base 1's rigidity is very big simultaneously, so whole and local roughness of foundation require very high, the large tracts of land contact failure of basal area probably appears during the installation, leads to concrete base 1's bearing capacity influenced. In this embodiment, as shown in fig. 3 and 11, the supporting column 2 is a cylinder, a grouting pipe 5 is arranged in the cylinder, a plurality of grooves 13 with downward openings are arranged at intervals at the bottom of the concrete base 1, grouting holes 131 are arranged on the bottom wall of each groove 13, and each grouting hole 131 is communicated with the grouting pipe 5. After the concrete base 1 is placed on the seabed 6, the grooves 13 and the seabed form a closed grouting space, the top of the closed grouting space is connected with the grouting holes 131, grouting materials can enter the closed grouting space through the grouting holes 131, and the grouting materials flow in the closed grouting space by pressure and fill all spaces and gravel gaps. The grouting of the closed grouting space comprises two steps: firstly, estimating the size of slurry which can be contained by the broken stone by calculating the porosity of the broken stone, stopping grouting when the grouting amount reaches the value, and waiting for initial setting; and after the grouting material is initially set in the first step, grouting again to fill the closed grouting space, and completing the whole grouting process after the grouting material is solidified. It should be noted that, when grouting, it is not required to fill all the gravel spaces, and the effect of improving the stability of the gravel can be achieved as long as the gravel spaces are filled.
In order to further improve the rigidity of the support column 2 and avoid the elastic deformation of the support column 2, mortar is filled in the lower part of the cylinder cavity of the support column 2.
In conclusion, in the offshore wind turbine foundation, the middle part of the concrete base 1 is provided with the groove 11 for inserting the support column 2, the pressure-bearing cylinder 3 is coaxially arranged at the upper part of the 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 a pressure-bearing cylinder 3 and inserts the lower part of recess 11, the lateral wall of support column 2 and the inner chamber wall interval arrangement of a pressure-bearing cylinder 3, it is equipped with a plurality of clamps 4 to insert in the clearance between the lateral wall of support column 2 and the inner chamber wall of a pressure-bearing cylinder 3, each clamps 4 around the axial interval arrangement of support column 2, each clamps one side of 4 all with the lateral wall butt of support column 2, each clamps the opposite side of 4 all with the inside wall butt of a pressure-bearing cylinder 3. Therefore, the support column 2 is clamped in the groove 11, when the support column 2 is subjected to the action of bending moment, the tensile side of the support column 2 applies tensile force to the clamping piece 4, and the clamping piece 4 is inserted in a gap between the outer side wall of the support column 3 and the inner cavity wall of the pressure-bearing cylinder 3, so that the upward tensile force applied to the clamping piece 4 by the support column 2 only causes the clamping piece 4 to slightly slide upwards and cannot be transmitted to the concrete base 1, and the fan foundation avoids the upward upwarp and fracture of the upper end of concrete poured outside the support column 2.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. The offshore wind turbine foundation is characterized by comprising a concrete base (1) and a pressure-bearing cylinder (3), wherein a groove (11) is formed in the middle of the concrete base (1), and the pressure-bearing cylinder (3) is fixedly arranged at the upper part of the groove (11);
the lower extreme of support column (2) is passed the inner chamber of a pressure bearing section of thick bamboo (3) and is inserted the lower part of recess (11), the lateral wall of support column (2) with the inner chamber wall interval arrangement of a pressure bearing section of thick bamboo (3), the lateral wall of support column (2) with it is equipped with a plurality of cards in the interval between the inner chamber wall of a pressure bearing section of thick bamboo (3) and holds a piece (4), each to hold a piece (4) and encircle the axial interval arrangement of support column (2), each one side of holding a piece (4) all with the lateral wall butt of support column (2), each the opposite side of holding a piece (4) all with the inside wall butt of a pressure bearing section of thick bamboo (3).
2. The offshore wind turbine foundation according to claim 1, wherein each of the retaining members (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 retaining member (4), each of the accommodating grooves (31) is communicated with the space, the bottom wall of each of the accommodating grooves (31) is a first inclined surface (311) inclined upward in a direction away from the supporting column (2), one side of each of the retaining members (4) opposite to the corresponding first inclined surface (311) is a second inclined surface (41) inclined downward in a direction close to the supporting column (2), and each of the first inclined surfaces (311) is respectively attached to the corresponding second inclined surface (41).
3. Offshore wind turbine foundation according to claim 2, wherein the roughness of each first bevel (311) and the roughness of each second bevel (41) are each larger than the roughness of the corresponding catch (4) on the side opposite the support column (2).
4. Offshore wind turbine foundation according to claim 2, wherein the inclination of the first inclined plane (311) and the second inclined plane (41) in the up-down direction is equal to or greater than 3 ° and equal to or less than 5 °.
5. The offshore wind turbine foundation of claim 1, wherein 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 pressure bearing cylinder (3) at intervals in the axial direction, and one end of each anchoring member (32) far away from the pressure bearing cylinder (3) is embedded in the concrete foundation (1).
6. Offshore wind turbine foundation according to claim 5, wherein each of the anchors (32) is arranged radially around the axis of the pressure bearing cartridge (3); and a reinforcing rib plate (33) is fixedly connected between each anchoring piece (32) and the outer side wall of the supporting column (2).
7. The wind turbine foundation according to claim 1, characterized in that the lower outer sides of the supporting columns (2) are spaced from the wall of the groove (11), and concrete is poured into the gaps between the lower outer sides of the supporting columns (2) and the wall of the groove (11).
8. Offshore wind turbine foundation according to claim 1, wherein a plurality of ballast tanks (12) are arranged in the concrete foundation (1), each ballast tank (12) is arranged around the groove (11) at axial intervals, and mortar is filled in each ballast tank (12); the pressure-bearing ring (3) is fixedly connected with the bulkhead of each ballast tank (12).
9. Offshore wind turbine foundation according to any of claims 1 to 8, wherein the support column (2) is a cylinder, a grouting pipe (5) is arranged in the cylinder, a plurality of grooves (13) with downward openings are arranged at intervals at the bottom of the concrete foundation (1), a grouting hole (131) is arranged at the bottom wall of each groove (13), and each grouting hole (131) is communicated with the grouting pipe (5).
10. Offshore wind turbine foundation according to claim 9, characterized in that the lower part of the cylinder cavity of the supporting columns (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 |
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| 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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| CN115434359A true CN115434359A (en) | 2022-12-06 |
| CN115434359B 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116695771A (en) * | 2023-08-01 | 2023-09-05 | 中国建筑第六工程局有限公司 | Truss type land wind power foundation and construction method thereof |
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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 |
| KR101864857B1 (en) * | 2017-07-28 | 2018-06-05 | 주식회사 넥스기술 | Construction method of foundation pile with reinforced casing structure |
| CN108867688A (en) * | 2018-07-18 | 2018-11-23 | 上海勘测设计研究院有限公司 | A kind of offshore wind turbine gravity type foundation and its installation method |
| 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 |
| 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 |
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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 |
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| CN116695771A (en) * | 2023-08-01 | 2023-09-05 | 中国建筑第六工程局有限公司 | Truss type land wind power foundation and construction method thereof |
| 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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| CN115434359B (en) | 2023-10-20 |
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