CN111663557A - Satellite type foundation of onshore wind power generation tower and arrangement method - Google Patents
Satellite type foundation of onshore wind power generation tower and arrangement method Download PDFInfo
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- CN111663557A CN111663557A CN202010608537.1A CN202010608537A CN111663557A CN 111663557 A CN111663557 A CN 111663557A CN 202010608537 A CN202010608537 A CN 202010608537A CN 111663557 A CN111663557 A CN 111663557A
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- 238000010248 power generation Methods 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 32
- 239000010959 steel Substances 0.000 claims description 32
- 239000004567 concrete Substances 0.000 claims description 12
- WSNMPAVSZJSIMT-UHFFFAOYSA-N COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 Chemical compound COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 WSNMPAVSZJSIMT-UHFFFAOYSA-N 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 23
- 239000000463 material Substances 0.000 abstract description 3
- 239000011440 grout Substances 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012795 verification Methods 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
- E02D27/42—Foundations for poles, masts or chimneys
- E02D27/425—Foundations for poles, masts or chimneys specially adapted for wind motors masts
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- 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
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
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Abstract
The invention discloses a satellite type foundation of a land wind power generation tower and an arrangement method, at least comprising a main tower body foundation directly bearing the land wind power generation tower and three or more satellite foundations uniformly arranged around the circumference of the main tower body foundation; the tower body of the land wind power generation tower is vertically arranged on a main tower body foundation, and the satellite foundation is connected with the tower body of the land wind power generation tower through a prestressed inhaul cable. The arrangement method comprises the following steps: the satellite foundations of the land wind power generation towers are arranged in a net structure, wherein the satellite foundation in the center of the net structure is simultaneously connected with the adjacent main tower body foundation. The satellite type foundation of the onshore wind power generation tower can obviously improve the stability of the onshore wind power generation tower; the material consumption is less, the construction cost is low, the occupied area is small, and the wind power generation tower is convenient to arrange; the construction of each foundation can be expanded at the same time, and the construction speed is high; the arrangement method can further improve the support stability of the wind power generation tower, and has a good application prospect.
Description
Technical Field
The invention belongs to the technical field of wind driven generator foundations, and relates to a satellite type foundation of a land wind driven generator tower and a layout method.
Background
Energy is an important support essential for the development of human society. With the continuous development of society, people's environmental awareness is continuously strengthened, and the demand for clean energy is higher and higher. Wind power generation is an environment-friendly energy form, and simultaneously, the huge wind energy in the natural environment is not effectively developed, so that the wind power generation is increasingly paid attention by all countries in the world.
With the rapid increase of the scale of wind power installations in various countries in the world, the installation number of wind power generators is also increased synchronously. The wind power generation tower is a main component of a wind power generation unit, and along with the continuous development of wind power generation, ultrahigh or huge wind power generation towers are increasingly appeared.
The design mode of a tower base is generally adopted by the current wind power generation tower, and along with the continuous increase of the volume, the height and the weight of the wind power generation tower, in order to ensure the bearing stability, the foundation for bearing the wind power generation tower has to be made bigger and bigger, on one hand, the time and the labor are wasted, the consumption of consumables is large, the construction cost of the wind power generation tower is greatly increased, on the other hand, the occupied area is wide, and the arrangement of the wind power generation tower is greatly influenced.
Therefore, the development of the satellite type foundation of the onshore wind power generation tower, which has small occupied area, low consumption of consumables and low cost, has practical significance, and the design mode of multiple bases on one tower can more effectively meet the construction requirements of the ultrahigh and giant wind power generation tower.
Disclosure of Invention
The invention aims to overcome the defects that the land wind power generation tower foundation in the prior art is wide in occupied area, affects the arrangement of a wind power generation tower, wastes time and labor, consumes large consumables and is high in construction cost, and provides the land wind power generation tower foundation which is small in occupied area, consumes small consumables and is low in cost.
In order to achieve the purpose, the invention provides the following technical scheme:
a satellite type foundation of a land wind power generation tower at least comprises a main tower body foundation directly bearing the land wind power generation tower and three or more satellite foundations uniformly distributed around the circumference of the main tower body foundation;
the tower body of the onshore wind power generation tower is vertically arranged on a main tower body foundation, and the satellite foundation is connected with the tower body of the onshore wind power generation tower through a prestressed inhaul cable.
According to the satellite type foundation of the onshore wind power generation tower, the pressure borne by the main tower body foundation is shared by the three or more satellite foundations uniformly distributed around the main tower body foundation, so that the size of the main tower body foundation is reduced, the satellite foundations uniformly distributed on the circumference are uniformly stressed, the bearing stability of the satellite type foundation can be remarkably improved, namely, the consumption of consumables is reduced on the premise of ensuring the stability of the foundation of the ultrahigh/large fan generator tower, the construction cost is reduced, meanwhile, the occupied area can be reduced by distributed arrangement, the wind power generation tower can be greatly convenient to arrange, in addition, the construction of each foundation can be simultaneously expanded by the distributed arrangement during engineering construction, the construction speed is high, and the application prospect is good.
As a preferred technical scheme:
the satellite type foundation of the land wind power generation tower comprises a base I;
the base I is a concrete pouring piece;
a steel ring I used for fixedly connecting a tower body of a land wind power generation tower is arranged above the base I, anchor rods penetrating through the base I are arranged on the steel ring I in pairs and are arranged in an annular mode on the circumference of the steel ring I, and the other ends of the anchor rods are connected with a steel ring II buried in the base I in an embedded mode. The protection scope of the main tower foundation of the present invention is not limited to this, and only one feasible technical solution is given here, and those skilled in the art can select a suitable main tower foundation according to actual requirements.
The satellite type foundation of the land wind power generation tower comprises a base I and a base II, wherein the base I comprises a circular truncated cone structure and a cylindrical structure connected with the smaller diameter end of the circular truncated cone structure;
the diameter of the cylindrical structure is equal to that of the smaller diameter end of the circular truncated cone structure, and the cylindrical structure and the circular truncated cone structure are connected in a seamless mode. During construction, the circular truncated cone structure of the base I can be covered by backfill soil so as to be reinforced for the second time. The structure of the base I of the present invention is not limited thereto, and only one possible technical solution is given here, and those skilled in the art can select the appropriate shape and size according to the actual needs.
The satellite type foundation of the land wind power generation tower is characterized in that the steel ring I is arranged at the free end of the cylindrical structure;
the base I is arranged on the base platform I, and the base platform I is a concrete leveling layer formed by pouring at the bottom of a leveled foundation pit.
The satellite foundation of the land wind power generation tower comprises a base II;
the base II is a concrete pouring part;
one end of the prestressed inhaul cable is embedded in the base II, and the other end of the prestressed inhaul cable is connected with a tower body of the onshore wind power generation tower.
According to the satellite type foundation of the land wind power generation tower, the satellite foundation is connected with the tower body of the land wind power generation tower through the plurality of parallel prestressed pull cables, the parallel prestressed pull cables can ensure that each prestressed pull cable is stressed uniformly, and the single prestressed pull cable can be prevented from being broken due to overlarge stress;
the both ends of many prestressing force cables are equipped with fixed steel sheet structure I and steel sheet structure II each other respectively, and wherein steel sheet structure I is pre-buried in base II, prestressing force cable overcoat has the grout sleeve, and grout in the sleeve, treat that the cement in the sleeve solidifies and can consolidate the prestressing force cable, still buried the cable in the base II and supported the steelframe underground, the cable supports the steelframe other end and fixes on the grout sleeve, supports it.
The satellite type foundation of the land wind power generation tower is characterized in that the base II is of a quadrangular frustum pyramid structure; the foundation pit leveling device is arranged on a base platform II, and the base platform II is a concrete leveling layer poured at the bottom of a leveled foundation pit;
and the foundation II is covered with backfill soil to reinforce the foundation II for the second time.
The invention also provides a method for arranging satellite foundations of land wind power generation towers, wherein a plurality of satellite foundations of land wind power generation towers are arranged in a net structure, and the satellite foundation in the center of the net structure is simultaneously connected with the adjacent main tower body foundation.
According to the arrangement method, the same satellite foundation can provide support for the main tower bodies of the wind power generation towers, so that the consumption of consumables is greatly reduced, the overall stability and wind resistance of the main tower bodies of the wind power generation towers in the net-shaped structure can be improved, the support stability is better than that of a single onshore wind power generation tower foundation, the satellite foundations can be constructed simultaneously during construction, the construction area is large, the speed is high, and the application prospect is good.
As a preferred technical scheme:
in the arrangement method, the net structure comprises four main tower foundations and nine satellite foundations;
the nine satellite foundations are arranged in a shape like a Chinese character 'tian' (four satellite foundations are arranged around one main tower body foundation), the satellite foundation at the center of the shape like a Chinese character 'tian' is connected with the four main tower bodies simultaneously through the prestress guys, the satellite foundations at four corners of the shape like a Chinese character 'tian' are connected with one main tower body respectively through the prestress guys, and the rest satellite foundations are connected with the two main tower bodies simultaneously respectively through the prestress guys.
In the arrangement method, the mesh structure comprises five main tower foundations and six satellite foundations;
the five satellite foundations enclose a regular pentagon (three satellite foundations are arranged around one main tower body foundation), the center of the regular pentagon is also provided with one satellite foundation which is respectively connected with the five main tower bodies through prestressed guys, and the rest satellite foundations are respectively connected with one main tower body through the prestressed guys. The scope of protection of the present invention is not limited thereto, and only one possible solution is given here, and the mesh structure can be arranged reasonably according to practical circumstances by a person skilled in the art.
Has the advantages that:
(1) according to the satellite type foundation of the onshore wind power generation tower, the satellite foundation is arranged around the main tower body foundation to share the pressure borne by the main tower body foundation, so that the size of the main tower body foundation is reduced, and meanwhile, the satellite foundations uniformly distributed on the circumference are uniformly stressed, so that the stability of the onshore wind power generation tower can be remarkably improved;
(2) according to the satellite type foundation of the onshore wind power generation tower, the distributed arrangement can reduce the consumption of consumables (materials such as reinforced concrete and the like) on the premise of ensuring the stability of the foundation of the ultra-high/large fan generator tower, reduce the construction cost, reduce the occupied area and greatly facilitate the arrangement of the wind power generation tower;
(3) the satellite type foundation of the terrestrial wind power generation tower can be distributed and can be used for simultaneously expanding the construction of each foundation when engineering construction is carried out, the construction speed is high, and the application prospect is good;
(4) the method for arranging satellite foundations of onshore wind power generation towers can greatly reduce the consumption of consumables, improve the overall stability and wind resistance of the main tower body foundations of the wind power generation towers in the net structure, and has better support stability compared with the satellite foundations of a single-group onshore wind power generation tower.
Drawings
FIG. 1 is a schematic view of a satellite based foundation for a land wind power tower of the present invention;
FIGS. 2 and 3 are schematic and top views, respectively, of the main tower foundation of the present invention;
FIG. 4 is a cross-sectional view of FIG. 3A-A;
FIG. 5 is an enlarged view of FIG. 4B;
FIG. 6 is a top view of the satellite base of the present invention;
FIG. 7 is a cross-sectional view of FIGS. 6C-C;
FIG. 8 is a schematic view of a mesh structure of example 3;
fig. 9 is a schematic view of the net structure of example 4 (the circle in fig. 8 and 9 represents a satellite foundation, and the square represents a main tower foundation);
the steel frame supporting method comprises the following steps of 1-steel ring I, 2-base I, 21-cylindrical structure, 22-round platform structure, 3-anchor rod, 4-base II, 5-base II, 6-grouting sleeve, 7-prestressed inhaul cable, 8-steel plate structure I, 9-steel plate structure II, 10-backfill, 11-steel ring II, 12-inhaul cable supporting steel frame.
Detailed Description
The following further describes the embodiments of the present invention with reference to the attached drawings.
Example 1
A satellite type foundation of a land wind power generation tower is shown in figure 1, and comprises a main tower body foundation directly bearing the land wind power generation tower and three satellite foundations uniformly arranged around the circumference of the main tower body foundation;
the tower body of the onshore wind power generation tower is vertically arranged on the main tower body foundation, and the satellite foundation is connected with the tower body of the onshore wind power generation tower through a prestressed inhaul cable 7;
the main tower foundation comprises a base I2, the base I2 is a concrete casting, the base I2 comprises a circular truncated cone structure 22 and a cylindrical structure 21 connected with the end with the smaller diameter of the circular truncated cone structure 22, the diameter of the cylindrical structure 21 is equal to the diameter of the end with the smaller diameter of the circular truncated cone structure 22, and the circular truncated cone structure and the cylindrical structure are connected in a seamless mode;
a steel ring I1 used for fixedly connecting a tower body of an onshore wind power generation tower is arranged above the base I2, namely the free end of the cylindrical structure 21, anchor rods 3 penetrating through the base I2 are arranged on the steel ring I, the anchor rods 3 are arranged on the circumference of the steel ring I1 in pairs and are arranged in an annular mode, and the other end of each anchor rod 3 is connected with a steel ring II 11 embedded in the base I2;
the base I2 is arranged on a base platform I, and the base platform I is a concrete leveling layer poured at the bottom of the leveled foundation pit;
the satellite foundation is shown in fig. 6-7, and comprises a base II 4, wherein the base II 4 is a concrete casting with a quadrangular frustum pyramid structure and is arranged on a base II 5, the base II 5 is a concrete leveling layer formed by casting at the bottom of a leveled foundation pit, and backfill 10 is covered on the base II 4;
the one end of prestressing force cable 7 is pre-buried in base II 4, the other end is connected with the shaft of land wind power generation tower, the shaft of a satellite basis and land wind power generation tower is connected through many (totally four) prestressing force cables 7 that are parallel to each other, the both ends of many prestressing force cables 7 are equipped with fixed steel sheet structure I8 and steel sheet structure II 9 each other respectively, wherein steel sheet structure I8 is pre-buried in base II 4, 7 overcoat of prestressing force cable have grout sleeve 6 (every two prestressing force cables 7 overcoat has a grout sleeve 6).
According to the satellite type foundation of the land wind power generation tower, the satellite foundation is arranged around the main tower body foundation to share the pressure borne by the main tower body foundation, so that the size of the main tower body foundation is reduced, and meanwhile, the satellite foundations uniformly distributed on the circumference are uniformly stressed, so that the stability of the land wind power generation tower can be remarkably improved; the distributed arrangement can not only reduce the consumption of consumables (materials such as reinforced concrete and the like) and reduce the construction cost on the premise of ensuring the stability of the foundation of the ultra-high/large fan generator tower, but also reduce the occupied area and greatly facilitate the arrangement of the wind power generation tower; the distributed arrangement can simultaneously expand the construction of each foundation when in engineering construction, has high construction speed and has wide application prospect.
Example 2
A satellite type foundation of a land wind power generation tower is basically the same as that of embodiment 1, and the difference is that four satellite foundations are correspondingly arranged around one main tower body foundation.
Example 3
A method for arranging satellite type foundations of land wind power generation towers integrally has a mesh structure as shown in figure 8, wherein the mesh structure comprises four main tower body foundations (corresponding to square blocks in figure 8) and nine satellite foundations (corresponding to circular blocks in figure 8), and the integral structures of the main tower body foundations and the satellite foundations are the same as those of embodiment 1;
the nine satellite foundations are arranged in a shape like a Chinese character 'tian', the satellite foundation at the center of the shape like a Chinese character 'tian' is connected with the four main tower bodies through the prestressed stay cables simultaneously, the satellite foundations at the four corners of the shape like a Chinese character 'tian' are connected with one main tower body through the prestressed stay cables respectively, and the rest satellite foundations are connected with the two main tower bodies through the prestressed stay cables simultaneously respectively.
Through verification, the satellite type foundation arrangement method for the land wind power generation tower can greatly reduce the consumption of consumables, improve the overall stability and wind resistance of the main tower body of each wind power generation tower in the net structure, has better support stability compared with that of a single land wind power generation tower foundation, can construct each satellite foundation simultaneously during construction, and has the advantages of large construction area, high speed and good application prospect.
Example 4
A method for arranging satellite type foundations of land wind power generation towers integrally has a mesh structure as shown in figure 9, wherein the mesh structure comprises five main tower body foundations (corresponding to square blocks in figure 9) and six satellite foundations (corresponding to circular blocks in figure 9), and the integral structures of the main tower body foundations and the satellite foundations are the same as those of embodiment 1;
the five satellite foundations enclose a regular pentagon, the center of the regular pentagon is also provided with one satellite foundation which is connected with the five main tower bodies through the prestressed guy cables, and the rest satellite foundations are connected with one main tower body through the prestressed guy cables.
Although specific embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these embodiments are merely illustrative and various changes or modifications may be made without departing from the principles and spirit of the invention.
Claims (10)
1. A satellite type foundation of a land wind power generation tower is characterized by at least comprising a main tower body foundation directly bearing the land wind power generation tower and three or more satellite foundations uniformly distributed around the circumference of the main tower body foundation;
the tower body of the onshore wind power generation tower is vertically arranged on a main tower body foundation, and the satellite foundation is connected with the tower body of the onshore wind power generation tower through a prestressed inhaul cable.
2. A satellite foundation for a land based wind power tower as claimed in claim 1 wherein said main tower foundation comprises a foundation I;
the base I is a concrete pouring piece;
a steel ring I used for fixedly connecting a tower body of a land wind power generation tower is arranged above the base I, anchor rods penetrating through the base I are arranged on the steel ring I in pairs and are arranged in an annular mode on the circumference of the steel ring I, and the other ends of the anchor rods are connected with a steel ring II buried in the base I in an embedded mode.
3. The satellite foundation of a land wind power tower as claimed in claim 2, wherein the base I comprises a circular truncated cone structure and a cylindrical structure connected with the smaller diameter end thereof;
the diameter of the cylindrical structure is equal to that of the smaller diameter end of the circular truncated cone structure, and the cylindrical structure and the circular truncated cone structure are connected in a seamless mode.
4. A satellite foundation for land-based wind power towers according to claim 3, wherein said steel ring I is mounted at the free end of said cylindrical structure;
the base I is arranged on the base platform I, and the base platform I is a concrete leveling layer formed by pouring at the bottom of a leveled foundation pit.
5. A satellite foundation for a land based wind power tower as claimed in claim 1 wherein said satellite foundation comprises a foundation II;
the base II is a concrete pouring part;
one end of the prestressed inhaul cable is embedded in the base II, and the other end of the prestressed inhaul cable is connected with a tower body of the onshore wind power generation tower.
6. The satellite foundation of claim 5, wherein a satellite foundation is connected to the tower body of the wind power tower by a plurality of pre-stressed cables parallel to each other;
the two ends of the prestressed inhaul cables are respectively provided with a steel plate structure I and a steel plate structure II which are fixed with each other, wherein the steel plate structure I is pre-embedded in the base II, the prestressed inhaul cables are externally sleeved with grouting sleeves, inhaul cable supporting steel frames are also embedded in the base II, and the other ends of the inhaul cable supporting steel frames are fixed on the grouting sleeves to support the inhaul cable supporting steel frames.
7. The satellite foundation of land wind power tower as claimed in claim 5, wherein said foundation II is of quadrangular frustum pyramid structure; the foundation pit leveling device is arranged on a base platform II, and the base platform II is a concrete leveling layer poured at the bottom of a leveled foundation pit;
and the base II is covered with backfill soil.
8. The method for arranging satellite foundations of land wind turbines as defined in any one of claims 1 to 7, wherein a plurality of satellite foundations of land wind turbines are arranged in a net structure, wherein the satellite foundations at the center of the net structure are simultaneously connected to the adjacent main tower body by different prestressed cables.
9. The method of claim 8, wherein the mesh structure includes four main tower foundations and nine satellite foundations;
the nine satellite foundations are arranged in a shape like a Chinese character 'tian', the satellite foundation at the center of the shape like a Chinese character 'tian' is connected with the four main tower bodies at the same time, the satellite foundations at the four corners of the shape like a Chinese character 'tian' are connected with one main tower body through the prestressed stay cables respectively, and the rest satellite foundations are connected with the two main tower bodies through the prestressed stay cables respectively.
10. The method of claim 8, wherein the mesh structure includes five main tower foundations and six satellite foundations;
the five satellite foundations enclose a regular pentagon, the center of the regular pentagon is also provided with one satellite foundation which is respectively connected with the five main tower bodies through prestress guys, and the rest satellite foundations are respectively connected with one main tower body through the prestress guys.
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Cited By (1)
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CN117027044A (en) * | 2023-09-08 | 2023-11-10 | 北京瑞科同创能源科技有限公司 | Foundation structure and wind driven generator |
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CN101063509A (en) * | 2006-04-30 | 2007-10-31 | 通用电气公司 | Tower adapter, method of producing a tower foundation and tower foundation |
CN202132187U (en) * | 2011-07-14 | 2012-02-01 | 华锐风电科技(集团)股份有限公司 | Guyed tower structure of wind generating set |
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