CN114960739A - Wind turbine generator prestress foundation structure and construction method thereof - Google Patents
Wind turbine generator prestress foundation structure and construction method thereof Download PDFInfo
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- CN114960739A CN114960739A CN202210771857.8A CN202210771857A CN114960739A CN 114960739 A CN114960739 A CN 114960739A CN 202210771857 A CN202210771857 A CN 202210771857A CN 114960739 A CN114960739 A CN 114960739A
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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
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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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
- Y02E10/728—Onshore wind turbines
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Abstract
The invention discloses a wind turbine generator prestress foundation structure and a construction method thereof, the wind turbine generator prestress foundation structure comprises an intermediate cylinder formed by vertically splicing a plurality of sub-intermediate cylinders, each sub-intermediate cylinder comprises an upper connecting ring cylinder, a precast concrete cylinder and a lower connecting ring cylinder, the upper connecting ring cylinder is connected with an upper ring plate provided with jacks, the lower connecting ring cylinder is connected with a lower ring plate provided with an insert block, the connecting block is connected with a steel wire rope penetrating through a supporting ring plate and extending out of the precast concrete cylinder, and the steel wire rope surrounds the outer wall of a liquid storage ring box for a plurality of circles and then extends into the precast concrete cylinder again and is connected with a baffle plate. The connection stability between the insert block and the lower ring plate is improved.
Description
Technical Field
The invention relates to the technical field of foundation structures of wind power equipment, in particular to a prestressed foundation structure of a wind turbine generator and a construction method thereof.
Background
At present, most offshore wind power plants in China are built in typhoon multi-generation sea areas, the power of the adopted wind generating sets is increasingly large, the load magnitude of the high-power wind generating sets in the typhoon multi-generation areas is huge, the requirements on the rigidity and the strength of foundations are higher, the capacity of a single fan is increased, and the diversity of seabed geological conditions in deep water areas puts new requirements and challenges on the foundation structural forms of the offshore wind generating sets.
In the prior art, a prestressed gravity type foundation of an offshore wind generating set with the publication number of CN108677992A and an installation method thereof are provided. The concrete prefabricated shell comprises a bottom plate, a concrete prefabricated shell and a reinforcing ring beam; a prestressed pore channel is arranged in the concrete prefabricated shell, a prestressed tendon penetrates into the prestressed pore channel, the lower end of the prestressed tendon is anchored in the bottom plate, and the upper end of the prestressed tendon is anchored in the reinforcing ring beam; the concrete prefabricated shell is filled with ballast fillers in a cavity, a concrete prefabricated shell structure is adopted, post-tensioning prestress tensioning is carried out on the shell, the strength and the rigidity of a gravity type foundation are greatly improved, the size and the weight of the gravity type foundation are remarkably reduced, the seawater corrosion prevention effect is good, steel is saved, a land prefabricated mode is built, the offshore field installation workload is low, the construction time and the cost are saved, the structure is small in whole under the action of waves and ocean currents, the gravity center is low, and the concrete prefabricated shell has good stability and can be applied to deep-water sea areas, large-capacity wind turbine generators and offshore wind power plants with shallow covering layers under geological conditions.
However, the prior art still has major defects, such as: the precast concrete casing need have higher height in order to stretch out the sea level, therefore precast concrete casing has great dead weight and volume, is difficult to the integrated manufacturing and transports to the mounted position, and adopts the longer prestressing tendons of length to the whole prestressing force that applys of precast concrete casing, can make the whole prestressing force that receives of precast concrete casing comparatively disperse and slightly little, is difficult to make precast concrete casing have stronger resistance to compression effect.
Disclosure of Invention
The invention aims to provide a wind turbine generator prestress foundation structure and a construction method thereof, and aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a wind turbine generator prestress foundation structure comprises an upper end fixedly connected with a mounting flange and a lower end fixedly connected with a middle cylinder of a concrete slab, wherein the middle cylinder is formed by vertically assembling at least two sub-middle cylinders, the sub-middle cylinders are formed by integrally pouring an upper connecting ring cylinder, a precast concrete cylinder and a lower connecting ring cylinder which are distributed from top to bottom, the precast concrete cylinder for storing ballast fillers is of a circular platform cylinder structure with a narrow upper part and a wide lower part, the size of the lower connecting ring cylinder of the upper sub-middle cylinder is the same as that of the upper connecting ring cylinder of the lower sub-middle cylinder, an upper ring plate is fixedly connected to the outer side of the upper connecting ring cylinder, a plurality of vertically through insertion holes are formed in the upper ring plate, a lower ring plate is fixedly connected to the outer side of the lower connecting ring cylinder, and a plurality of insertion blocks extending into the insertion holes of the lower sub-middle cylinder are fixedly connected to the lower ring plate;
precast concrete section of thick bamboo inner wall hoop fixedly connected with supporting ring board, and supporting ring inboard wall department activity extrusion has the connection dog, and connects dog fixedly connected with and pass the supporting ring board and stretch out the wire rope of a precast concrete section of thick bamboo, the jack outside is connected with the annular groove, and the annular groove internal fixation is provided with around the jack outside and inside stock solution ring case of depositing the adhesion agent, wire rope stretches out and encircles a plurality of rings of stock solution ring case outer wall and stretch into a precast concrete section of thick bamboo once more after a precast concrete section of thick bamboo, and wire rope stretches into a precast concrete section of thick bamboo one end below fixedly connected with baffle once more.
Preferably, a plurality of puncture blocks with sharp parts are stored in the liquid storage ring box.
Preferably, the outer wall of the precast concrete cylinder is fixedly connected with a guide block with an upward hole, and the steel wire rope penetrates through the support ring plate and the precast concrete cylinder, upwards extends out of the guide block and then extends into the annular groove.
Preferably, the inner wall of the supporting ring plate is evenly provided with a plurality of connecting check blocks along the circumferential direction of the supporting ring plate, any one of the connecting check blocks is fixedly connected with a steel wire rope which stretches out of the precast concrete cylinder, stretches into the precast concrete cylinder again after encircling the liquid storage ring box for a plurality of rings, and the steel wire rope stretches into one end of the precast concrete cylinder again and is fixedly connected above the same baffle.
Preferably, the ring direction fixedly connected with of precast concrete section of thick bamboo inner wall is no less than two, upper and lower interval distribution's supporting ring board, and all passes in any supporting ring board and has stretched out a precast concrete section of thick bamboo, encircle the wire rope that stretches into in the precast concrete section of thick bamboo once more after the liquid storage ring case a plurality of rings.
Preferably, the steel cable penetrating through the upper support ring plate extends downwards in the side wall of the precast concrete cylinder and is fixedly connected to a steel cable body penetrating through the lower support ring plate and extending into the side wall of the precast concrete cylinder.
Preferably, a plurality of concave points are drilled on the outer wall of the insert block.
Preferably, the upper connecting ring cylinder of the uppermost terminal intermediate cylinder is fixedly connected with the mounting flange, and the lower connecting ring cylinder of the lowermost terminal intermediate cylinder is fixedly connected with the concrete slab.
A construction method is used for the wind turbine generator prestress foundation structure and comprises the following steps:
a, forming a sub-middle cylinder rudiment with an upper connecting ring cylinder, a precast concrete cylinder, a lower connecting ring cylinder, an upper ring plate, a lower ring plate and an insert block by pouring and molding concrete, and reserving a channel for a steel wire rope to pass through;
b, cutting a jack according to the position of the insert block, cutting an annular groove on the outer wall of the jack, and fixing the liquid storage ring box on the inner wall of the annular groove;
c, fixing the support ring plate on the inner wall of the precast concrete cylinder, penetrating a steel wire rope with a connecting stop block out of the precast concrete cylinder, surrounding the liquid storage ring box for a plurality of circles, then extending into the precast concrete cylinder again, and welding a baffle below one end of the steel wire rope extending into the precast concrete cylinder again;
d, fixing the mounting flange on the upper connecting ring cylinder of the middle cylinder of the uppermost terminal, and fixedly connecting the lower connecting ring cylinder of the middle cylinder of the lowermost terminal with the concrete slab;
e, conveying the plurality of sub-middle barrels to a preset position through a conveying device such as a traction boat and the like, and sequentially and downwards putting the sub-middle barrels from large to small, so that the insertion blocks of the upper sub-middle barrel extend into the insertion holes of the lower sub-middle barrel;
and F, after the sub-middle cylinders are assembled, filling ballast fillers downwards from the mounting flange.
Compared with the prior art, the invention has the beneficial effects that:
according to the wind turbine generator prestress foundation structure and the construction method thereof, the plurality of sub-middle cylinders are spliced to form the middle cylinder, so that the manufacturing and transportation cost is reduced, the supporting ring plates, the connecting stop blocks, the steel wire ropes and the baffle plates are arranged in each precast concrete cylinder, the ballast filler is used for compressing the baffle plates, and the prestress which expands outwards is applied to each precast concrete cylinder one by one, so that the precast concrete cylinders are fully and intensively prestressed, the compression resistance effect of the precast concrete cylinders is improved, the steel wire ropes compress the liquid storage ring box to collapse and release the adhesive during stretching, the connection stability between the insertion blocks and the lower ring plate is improved, and the splicing stability between the adjacent sub-middle cylinders is further improved.
Drawings
FIG. 1 is a three-dimensional schematic view of the overall structure of the present invention;
FIG. 2 is a schematic sectional elevation view of the overall structure of the present invention;
FIG. 3 is a schematic cross-sectional front view of a single sub-cartridge structure according to the present invention;
FIG. 4 is a schematic view of a steel wire rope in the invention encircling a liquid storage ring;
FIG. 5 is a schematic top view of a single sub-cartridge structure according to the present invention;
FIG. 6 is a schematic top sectional view of the precast concrete cylinder and the support ring plate joint according to the present invention.
In the figure: the concrete slab comprises a flange 1, a concrete slab 2, a precast concrete cylinder 3, an upper connecting ring cylinder 4, a lower connecting ring cylinder 5, an upper ring plate 6, a jack 61, an annular groove 62, a liquid storage ring box 7, a lower ring plate 8, an insert block 9, a support ring plate 10, a connecting stop block 11, a steel wire rope 12, a baffle 13, a puncture block 14 and a guide block 15.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution:
the first embodiment is as follows:
a wind turbine generator prestress foundation structure comprises an upper end fixed connection mounting flange 1 and a lower end fixed connection middle cylinder of a concrete slab 2, wherein the middle cylinder is formed by vertically assembling three sub-middle cylinders, the middle cylinder is formed by vertically assembling the three sub-middle cylinders in a matched mode, the manufacture and transportation are convenient, the production and transportation cost is reduced, any one sub-middle cylinder is an upper connecting ring cylinder 4, a precast concrete cylinder 3 and a lower connecting ring cylinder 5 which are distributed from top to bottom in an integrated pouring mode, the joints of the precast concrete cylinder 3, the upper connecting ring cylinder 4 and the lower connecting ring cylinder 5 are in circular arc transition, the internal stress of the joints of the precast concrete cylinder 3, the upper connecting ring cylinder 4 and the lower connecting ring cylinder 5 is reduced due to the circular arc transition, the firmness of the sub-middle cylinders is improved, and the precast concrete cylinder 3 used for storing ballast fillers is of a circular platform cylinder structure with a narrow upper part and a wide part, when the wind turbine generator prestress base structure is assembled, the lower connecting ring cylinder 5 of the large-size sub-middle cylinder is fixedly connected with the concrete plate 2, the upper connecting ring cylinder 4 of the small-size sub-middle cylinder is fixedly connected with the mounting flange 1, then the large-size sub-middle cylinder, the medium-size sub-middle cylinder and the small-size sub-middle cylinder are sequentially placed into the sea with large heads facing downwards, the lower connecting ring cylinder 5 of the medium-size sub-middle cylinder is aligned and pressed on the upper connecting ring cylinder 4 of the large-size sub-middle cylinder, and the lower connecting ring cylinder 5 of the small-size sub-middle cylinder is aligned and pressed on the upper connecting ring cylinder 4 of the medium-size sub-middle cylinder;
the outer side of the upper connecting ring cylinder 4 is fixedly connected with an upper ring plate 6, the upper ring plate 6 is provided with four vertically through insertion holes 61, the four insertion holes 61 are uniformly distributed along the annular direction of the upper ring plate 6, the outer side of the lower connecting ring cylinder 5 is fixedly connected with a lower ring plate 8, the lower ring plate 8 is fixedly connected with four insertion blocks 9 which are aligned one by one and extend into the insertion holes 61 of the lower sub-middle cylinder, the insertion blocks 9 are inserted into the insertion holes 61, so that the splicing between the upper and lower adjacent sub-middle cylinders is completed, the operation is simple and reliable, the underwater operation is convenient, the arrangement of the lower ring plate 8 improves the drainage volume of the sub-middle cylinder, the conveying convenience of the sub-middle cylinder is improved, the upper ring plate 6 is not arranged on the uppermost sub-middle cylinder in the embodiment, the lower ring plate 8 is not arranged on the lowermost sub-middle cylinder, and the production and manufacturing cost of the sub-middle cylinder is reduced on the premise that the installation and the use are not influenced;
the inner wall of the precast concrete cylinder 3 is annularly and fixedly connected with a supporting ring plate 10, the supporting ring plate 10 is an annular steel plate, the supporting ring plate 10 is arranged to support the precast concrete cylinder 3, the compression resistance of the precast concrete cylinder 3 is improved, so that the precast concrete cylinder 3 placed in the sea can bear larger water pressure, the service life of the precast concrete cylinder 3 is prolonged, the inner wall of the supporting ring plate 10 is movably extruded with a connecting block 11, the connecting block 11 is fixedly connected with a steel wire rope 12 which penetrates through the supporting ring plate 10 and extends out of the precast concrete cylinder 3, the outer side of the jack 61 is connected with an annular groove 62, the annular groove 62 is opened at the lower end face of the lower ring plate 6, the liquid storage ring box 7 is convenient to be installed subsequently, the inner wall of the annular groove 62 is fixedly connected with a liquid storage ring box 7 which surrounds the outer wall of the liquid storage ring box 7 and stores an adhesive inside, the steel wire rope 12 extends out of the precast concrete cylinder 3 and surrounds a plurality of rings around the outer wall of the liquid storage ring box 7 and extends into the precast concrete cylinder 3 again, the steel wire rope 12 extends into the lower part of one end of the precast concrete cylinder 3 again, a baffle 13 is fixedly connected with the lower part of one end of the precast concrete cylinder, after the three sub-middle cylinders are assembled, ballast filler is injected downwards from the mounting flange 1 and falls into the inner cavity of the sub-middle cylinder, and the mounting stability of the wind turbine prestress base structure is improved by injecting the ballast filler;
in the process of injecting ballast filler into the inner cavity of the sub-intermediate cylinder, the ballast filler downwards presses the baffle plate 13, so that the baffle plate 13 downwards slides, the baffle plate 13 downwards slides and pulls the steel wire rope 12, the steel wire rope 12 is stressed and stretched and presses the liquid storage ring box 7, the liquid storage ring box 7 is broken and damaged under the compression of the steel wire rope 12, an adhesive in the liquid storage ring box 7 flows out and is filled in gaps among the insert block 9, the jack 61 and the annular groove 62, wherein the adhesive is a waterproof adhesive, so that the insert block 9 is fixedly adhered in the lower ring plate 6, the connection strength between adjacent sub-intermediate cylinders is improved, the steel wire rope 12 pulls the connecting block 11 along the direction close to the precast concrete cylinder 3 under the pulling of the baffle plate 13, the connecting block 11 presses the supporting ring plate 10 to outwards expand, the supporting ring plate 10 outwards presses the precast concrete cylinder 3 to outwards expand, so that the supporting ring plate 10 and the precast concrete cylinder 3 have the prestress of outwards expanding, thereby offsetting the inward pressing force of the follow-up water pressure to the precast concrete cylinder 3 and prolonging the service life of the precast concrete cylinder 3.
Example two:
example two the prestressing force that precast concrete cylinder 3 received is optimized on the basis of example one, namely: four connecting stop blocks 11 are uniformly arranged on the inner wall of the supporting ring plate 10 along the circumferential direction of the supporting ring plate, any one of the connecting stop blocks 11 is fixedly connected with a steel wire rope 12 which extends out of the precast concrete cylinder 3 and extends into the precast concrete cylinder 3 again after encircling the liquid storage ring box 7 for a plurality of circles, one end of each of the four steel wire ropes 12 extending into the precast concrete cylinder 3 again is fixedly connected above the same baffle plate 13, the baffle plates 13 are stably and horizontally arranged in the precast concrete cylinder 3 under the traction of the four steel wire ropes 12, so that the baffle plates 13 are conveniently pressed downwards by subsequent ballast fillers, and the baffle plates 13 slide downwards under the compression of the ballast fillers to enable the four connecting stop blocks 11 to press the supporting ring plate 10 to expand outwards, so that the stability of outward expansion of the supporting ring plate 10 is improved;
furthermore, the inner wall of any one precast concrete cylinder 3 is annularly and fixedly connected with two support ring plates 10 which are distributed at intervals up and down, a steel wire rope 12 which penetrates through the upper support ring plate 10 extends downwards in the side wall of the precast concrete cylinder 3 and is fixedly connected to a steel wire rope 12 which penetrates through the lower support ring plate 10 and extends into the side wall of the precast concrete cylinder 3, when a baffle 13 slides downwards, the steel wire rope 12 presses the two support ring plates 10 to expand outwards through a connecting stop block 11, the support ring plates 10 expand outwards and press the precast concrete cylinder 3 to expand outwards, and the stability of the outward expansion of the precast concrete cylinder 3 is improved by arranging the two support ring plates 10;
further, the outer wall of the precast concrete cylinder 3 is fixedly connected with a guide block 15 with an upward hole, the steel wire rope 12 penetrates through the supporting ring plate 10 and the precast concrete cylinder 3 and extends into the annular groove 62 after extending out of the guide block 15, the guide block 15 guides the advancing path of the steel wire rope 12, the guide block 15 protects the steel wire rope 12 and the outer wall of the precast concrete cylinder 3, and the problem that the steel wire rope 12 is extruded and abraded with the outer wall of the precast concrete cylinder 3 when being stressed and stretched is solved.
Example three:
embodiment three optimizes the adhesion strength between the insert 9 and the lower ring plate 6 on the basis of embodiment one, namely: a plurality of puncture blocks 14 with sharp portions are stored in the liquid storage ring box 7, the steel wire rope 12 presses the liquid storage ring box 7 to deform inwards to collapse under the action of external force stretching, the inner wall of the liquid storage ring box 7 is in extrusion contact with the puncture blocks 14 in the inward deformation collapse process, the puncture blocks 14 puncture the liquid storage ring box 7, the rupture degree of the liquid storage ring box 7 is increased, the adhesive agent can flow out conveniently, a plurality of concave points are formed in the outer wall of the insertion block 9, the contact area between the adhesive agent and the outer wall of the insertion block 9 is increased by the arrangement of the concave points, and the adhesive strength between the insertion block 9 and the lower ring plate 6 is further improved.
A construction method is used for the wind turbine generator prestress foundation structure and comprises the following steps:
a, forming a sub-middle cylinder rudiment with an upper connecting ring cylinder 4, a precast concrete cylinder 3, a lower connecting ring cylinder 5, an upper ring plate 6, a lower ring plate 8 and an insert block 9 by pouring and molding concrete, and reserving a channel for a steel wire rope 12 to pass through;
b, cutting a jack 61 according to the position of the insert block 9, cutting an annular groove 62 on the outer wall of the jack 61, and fixing the liquid storage ring box 7 on the inner wall of the annular groove 62;
c, fixing the support ring plate 10 on the inner wall of the precast concrete cylinder 3, penetrating a steel wire rope 12 with a connecting stop block 11 out of the precast concrete cylinder 3, surrounding the liquid storage ring box 7 for a plurality of circles, then extending into the precast concrete cylinder 3 again, and welding a baffle plate 13 below one end of the steel wire rope 12 extending into the precast concrete cylinder 3 again;
d, fixing the mounting flange 1 on an upper connecting ring cylinder 4 of the middle cylinder of the uppermost terminal, and fixedly connecting a lower connecting ring cylinder 5 of the middle cylinder of the lowermost terminal with the concrete slab 2;
e, conveying the plurality of sub-middle cylinders to a preset position through a conveying device such as a traction boat and the like, and sequentially and downwards putting the sub-middle cylinders from large to small, so that the insertion blocks 9 of the upper sub-middle cylinder extend into the insertion holes 61 of the lower sub-middle cylinder;
f, after the sub-middle cylinders are assembled, filling ballast fillers downwards from the mounting flange 1.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a wind turbine generator system prestressing force foundation structure, includes an intermediate section of thick bamboo of upper end fixed connection mounting flange (1), lower extreme fixed connection concrete slab (2), its characterized in that: the middle cylinder is formed by assembling at least two sub-middle cylinders up and down, the sub-middle cylinders are formed by integrally pouring an upper connecting ring cylinder (4), a precast concrete cylinder (3) and a lower connecting ring cylinder (5) which are distributed from top to bottom, the precast concrete cylinder (3) used for storing ballast fillers is of a circular table cylinder structure with a narrow upper part and a wide lower part, the lower connecting ring cylinder (5) of the upper sub-middle cylinder is the same as the upper connecting ring cylinder (4) of the lower sub-middle cylinder in size, an upper ring plate (6) is fixedly connected to the outer side of the upper connecting ring cylinder (4), a plurality of vertically through insertion holes (61) are formed in the upper ring plate (6), a lower ring plate (8) is fixedly connected to the outer side of the lower connecting ring cylinder (5), and a plurality of insertion blocks (9) extending into the insertion holes (61) of the lower sub-middle cylinder are fixedly connected to the lower ring plate (8);
precast concrete section of thick bamboo (3) inner wall hoop fixedly connected with supporting ring board (10), and supporting ring board (10) inner wall department activity extrusion has connection dog (11), and connects dog (11) fixedly connected with and pass supporting ring board (10) and stretch out wire rope (12) of precast concrete section of thick bamboo (3), jack (61) outside is connected with annular groove (62), and annular groove (62) internal fixation is provided with around stock solution ring case (7) of depositing the adhesion agent outside and inside jack (61), wire rope (12) stretch out after precast concrete section of thick bamboo (3) around a plurality of rings of stock solution ring case (7) outer wall and stretch into precast concrete section of thick bamboo (3) once more, and wire rope (12) stretch into one end below fixedly connected with baffle (13) of precast concrete section of thick bamboo (3) once more.
2. The wind turbine prestressed infrastructure of claim 1, wherein: a plurality of puncture blocks (14) with sharp parts are stored in the liquid storage ring box (7).
3. The wind turbine prestressed infrastructure of claim 1, characterized in that: the outer wall of the precast concrete cylinder (3) is fixedly connected with a guide block (15) with an upward hole, and the steel wire rope (12) penetrates through the supporting ring plate (10) and the precast concrete cylinder (3) and extends into the annular groove (62) after extending out of the guide block (15) upwards.
4. The wind turbine prestressed infrastructure of claim 1, characterized in that: the supporting ring plate is characterized in that a plurality of connecting check blocks (11) are evenly arranged on the inner wall of the supporting ring plate (10) along the circumferential direction of the supporting ring plate, any one of the connecting check blocks (11) is fixedly connected with a prefabricated concrete cylinder (3) and surrounds a plurality of rings of the liquid storage ring box (7) and then stretches into a steel wire rope (12) in the prefabricated concrete cylinder (3), and the steel wire rope (12) stretches into one end of the prefabricated concrete cylinder (3) again and is fixedly connected above the same baffle (13).
5. The wind turbine prestressed infrastructure of claim 1, characterized in that: the prefabricated concrete cylinder (3) inner wall hoop fixedly connected with is no less than two, upper and lower interval distribution's supporting ring board (10), and all passes in arbitrary supporting ring board (10) and has stretched out prefabricated concrete cylinder (3), encircle and stretch into wire rope (12) in prefabricated concrete cylinder (3) again behind liquid storage ring case (7) a plurality of rings.
6. Wind turbine prestressed infrastructure according to claim 5, characterized in that: the steel wire rope (12) penetrating through the upper supporting ring plate (10) extends downwards in the side wall of the precast concrete cylinder (3) and is fixedly connected to a steel wire rope body of the steel wire rope (12) penetrating through the lower supporting ring plate (10) and extending into the side wall of the precast concrete cylinder (3).
7. The wind turbine prestressed infrastructure of claim 1, wherein: the outer wall of the insertion block (9) is provided with a plurality of concave points.
8. The wind turbine prestressed infrastructure of claim 1, characterized in that: an upper connecting ring cylinder (4) of the middle cylinder of the uppermost terminal is fixedly connected with the mounting flange (1), and a lower connecting ring cylinder (5) of the middle cylinder of the lowermost terminal is fixedly connected with the concrete slab (2).
9. A construction method for a wind turbine prestressed foundation structure according to any one of claims 1 to 8, characterized in that it comprises the following steps:
a, forming a sub-middle cylinder embryonic form with an upper connecting ring cylinder (4), a precast concrete cylinder (3), a lower connecting ring cylinder (5), an upper ring plate (6), a lower ring plate (8) and an insert block (9) by pouring and molding concrete, and reserving a channel for a steel wire rope (12) to pass through;
b, cutting a jack (61) according to the position of the insert block (9), cutting an annular groove (62) on the outer wall of the jack (61), and fixing the liquid storage ring box (7) on the inner wall of the annular groove (62);
c, fixing the support ring plate (10) on the inner wall of the precast concrete cylinder (3), penetrating a steel wire rope (12) with a connecting stop block (11) out of the precast concrete cylinder (3) and surrounding the liquid storage ring box (7) for a plurality of circles, then extending into the precast concrete cylinder (3) again, and welding a baffle plate (13) below one end of the steel wire rope (12) extending into the precast concrete cylinder (3) again;
d, fixing the mounting flange (1) on an upper connecting ring barrel (4) of the middle barrel of the uppermost terminal, and fixedly connecting a lower connecting ring barrel (5) of the middle barrel of the lowermost terminal with the concrete slab (2);
e, conveying the plurality of sub-middle cylinders to a preset position through a conveying device such as a traction boat and the like, and sequentially and downwards putting the sub-middle cylinders from large to small, so that the insertion block (9) of the upper sub-middle cylinder extends into the insertion hole (61) of the lower sub-middle cylinder;
f, after the sub-middle cylinders are assembled, filling ballast fillers downwards from the mounting flange (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210771857.8A CN114960739B (en) | 2022-06-30 | 2022-06-30 | Prestressed foundation structure of wind turbine generator and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210771857.8A CN114960739B (en) | 2022-06-30 | 2022-06-30 | Prestressed foundation structure of wind turbine generator and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114960739A true CN114960739A (en) | 2022-08-30 |
| CN114960739B CN114960739B (en) | 2023-08-22 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886400A (en) * | 2010-07-01 | 2010-11-17 | 江苏新誉重工科技有限公司 | Foundation of wind generating set |
| CN204024928U (en) * | 2014-07-10 | 2014-12-17 | 中国电建集团西北勘测设计研究院有限公司 | One can assemble self-erecting type wind power generating set prestressed concrete steel combination pylon |
| CN108266330A (en) * | 2018-03-06 | 2018-07-10 | 中国电建集团华东勘测设计研究院有限公司 | A kind of Wind turbines prestressing force steel reinforced concrete tower |
| CN108867684A (en) * | 2018-07-18 | 2018-11-23 | 上海勘测设计研究院有限公司 | Offshore wind turbine gravity caisson basis and its installation method |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886400A (en) * | 2010-07-01 | 2010-11-17 | 江苏新誉重工科技有限公司 | Foundation of wind generating set |
| CN204024928U (en) * | 2014-07-10 | 2014-12-17 | 中国电建集团西北勘测设计研究院有限公司 | One can assemble self-erecting type wind power generating set prestressed concrete steel combination pylon |
| CN108266330A (en) * | 2018-03-06 | 2018-07-10 | 中国电建集团华东勘测设计研究院有限公司 | A kind of Wind turbines prestressing force steel reinforced concrete tower |
| CN108867684A (en) * | 2018-07-18 | 2018-11-23 | 上海勘测设计研究院有限公司 | Offshore wind turbine gravity caisson basis and its installation method |
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