CN114837210A - Fan foundation with honeycomb type underground continuous wall and construction method thereof - Google Patents
Fan foundation with honeycomb type underground continuous wall and construction method thereof Download PDFInfo
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- CN114837210A CN114837210A CN202210094469.0A CN202210094469A CN114837210A CN 114837210 A CN114837210 A CN 114837210A CN 202210094469 A CN202210094469 A CN 202210094469A CN 114837210 A CN114837210 A CN 114837210A
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- 238000010276 construction Methods 0.000 title claims abstract description 17
- 239000002689 soil Substances 0.000 claims abstract description 11
- 230000002787 reinforcement Effects 0.000 claims description 20
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 3
- 230000001413 cellular effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000006467 substitution reaction 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
- E02D27/00—Foundations as substructures
- E02D27/30—Foundations made with permanent use of sheet pile bulkheads, walls of planks, or sheet piling boxes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
- F03D13/22—Foundations specially adapted for wind motors
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
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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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- General Life Sciences & Earth Sciences (AREA)
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Abstract
The invention provides a fan foundation with a honeycomb type underground continuous wall and a construction method. The honeycomb type underground continuous wall is buried in a foundation, the bearing platform is located above the honeycomb type underground continuous wall and connected with the honeycomb type underground continuous wall, and the cross section of the honeycomb type underground continuous wall perpendicular to the vertical direction is of a honeycomb structure. A plurality of holes extending in the vertical direction are defined in the honeycomb type underground continuous wall, and soil bodies are filled in the holes. The honeycomb type underground continuous wall fan foundation provided by the invention can improve the anti-overturning stability of the fan, and meanwhile, the fan foundation has higher strength and rigidity and smaller floor area.
Description
Technical Field
The invention belongs to the technical field of wind power, and particularly relates to a fan foundation with a honeycomb type underground continuous wall and a construction method of the fan foundation.
Background
The onshore wind driven generator is one of the important forms of wind power generation, and the upper structure of the wind turbine is larger and heavier, so the stability of the wind turbine foundation against overturning, shearing and fatigue is very important. Common forms of onshore wind turbine foundations include pile foundations, extended foundations, and the like. The pile foundation is formed by vertically or obliquely arranging foundation piles in a foundation and connecting the foundation piles with a bearing platform to bear upper load. The expansion foundation is that the section of the foundation is properly enlarged, so that the load applied to the foundation is smaller than the maximum allowable bearing capacity of the foundation. At present, along with the popularization and application of a large-capacity wind turbine generator, the safety requirements of the tower drum weight and the load of a fan on a fan foundation structure are improved. Under the condition, the traditional fan foundation has the problems of small bearing capacity, large occupied area and the like, and the requirement of a large-capacity wind turbine generator can not be met.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the embodiment of the invention provides a fan foundation with a honeycomb-structure underground continuous wall, which has good anti-overturning stability.
The fan foundation with the honeycomb-structure underground continuous wall comprises the following components: honeycomb underground continuous wall and cushion cap. The cross section of the honeycomb type underground continuous wall perpendicular to the vertical direction is of a honeycomb structure, a plurality of holes extending along the vertical direction are defined in the honeycomb type underground continuous wall, soil bodies are filled in the holes, and the bearing platform is located above the honeycomb type underground continuous wall and connected with the honeycomb type underground continuous wall.
According to the fan foundation with the honeycomb-structure underground continuous wall, the anti-overturning stability of the fan is enhanced, the strength of the fan foundation is improved, the service life of the fan is prolonged, and the occupied area of the fan foundation is reduced through the arrangement of the honeycomb-structure underground continuous wall.
In some embodiments, the honeycomb underground continuous wall comprises a plurality of honeycomb units which are closely arranged, the middle parts of the honeycomb units define the holes, and a section of wall body is shared by adjacent honeycomb units.
In some embodiments, the honeycomb unit is a hollow regular polygonal prism structure.
In some embodiments, the honeycomb underground diaphragm wall is composed of seven honeycomb units with the same structure, wherein six honeycomb units are arranged around the honeycomb unit positioned in the middle and are connected in sequence.
In some embodiments, the peripheral outline of a cross section of the honeycomb unit perpendicular to the vertical direction has a side length of 1.5-2.5 m.
In some embodiments, the wall thickness of the honeycomb underground continuous wall is greater than or equal to 400 mm.
In some embodiments, the honeycomb underground diaphragm wall has a height of 10-20m in the vertical direction.
In some embodiments, the honeycomb underground diaphragm wall is a symmetrical structure.
In some embodiments, the wind turbine foundation is according to any one of claims 1-9, the construction method comprising the steps of:
step 1, constructing a guide wall;
and 5, pouring to form the bearing platform.
Drawings
FIG. 1 is a structural diagram of a honeycomb type underground continuous wall fan foundation provided by an embodiment of the invention.
FIG. 2 is a sectional view of a honeycomb type underground continuous wall provided by an embodiment of the present invention.
Fig. 3 is a partially enlarged schematic view of fig. 1.
Reference numerals:
a fan base 100; a honeycomb underground diaphragm wall 1; a cellular unit 11; a hole 12; a bearing platform 2; an anchor-bolt cage assembly 3; a flange 31; an upper anchor plate 32; high-strength grouting material 33; an anchor bar 34; a lower anchor plate 35; a reinforcement cage 4;
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The basic structure of a wind turbine foundation 100 having a honeycomb type underground diaphragm wall in the embodiment of the present invention will be described with reference to fig. 1 to 3.
The wind turbine foundation 100 includes a honeycomb type underground diaphragm wall 1 and a cap 2. The honeycomb type underground continuous wall 1 is buried underground to be used as a supporting structure of a fan foundation 100, the bottom of the bearing platform 2 is connected with the top of the honeycomb type underground continuous wall 1, the top of the bearing platform 2 is flush with the ground, and the top of the bearing platform 2 is used for being connected with structures above the ground such as a fan and the like. In other words, the honeycomb type underground continuous wall 1 and the bearing platform 2 are both positioned below the ground level, and the honeycomb type underground continuous wall 1 is positioned below the bearing platform 2.
The honeycomb type underground continuous wall 1 is composed of continuous walls extending in the vertical direction, and the cross section of the continuous walls perpendicular to the vertical direction is of a honeycomb structure. The honeycomb type underground continuous wall 1 comprises a plurality of honeycomb units 11, the honeycomb units 11 are closely arranged to form the honeycomb type underground continuous wall 1, a hole 12 extending in the vertical direction is defined in the middle of each honeycomb unit 11, and soil is filled in the hole 12. It is understood that adjacent honeycomb units 11 share a wall. In other words, the honeycomb units 11 are of a tubular structure, the walls of the plurality of honeycomb units 11 are connected with one another to form the honeycomb underground continuous wall 1 extending in the vertical direction, the holes 12 in the honeycomb underground continuous wall 1 are filled with soil, and the soil filled in the holes 12 plays a role in further enhancing the overturning resistance and the extrusion resistance of the fan foundation.
The fan foundation comprises a honeycomb type underground continuous wall for supporting a bearing platform, wherein the honeycomb type underground continuous wall is composed of a plurality of closely arranged honeycomb units, the honeycomb units can disperse and bear large bending moment load together, and foundation soil on the outer side and the inner side of the honeycomb type underground continuous wall exerts certain pressure on the wall body, so that the extrusion resistance, the overturning resistance stability and the bearing capacity of the honeycomb type underground continuous wall are superior to those of a traditional continuous wall structure with a circular or single polygonal section. In addition, the honeycomb type underground continuous wall has stronger bearing capacity, so that the honeycomb type underground continuous wall can have smaller floor area under the condition of meeting the load requirement of the wind turbine generator.
The wind turbine foundation provided by the embodiment of the invention can be applied to an onshore wind turbine foundation, in particular to a natural foundation of a large-capacity wind turbine.
One embodiment provided by the present invention is described below with reference to fig. 1-3. For convenience of description, the extending direction of the fan base 100 is defined as an up-down direction, which is indicated by an arrow in fig. 1.
As shown in fig. 1, the honeycomb type underground continuous wall fan foundation 100 includes a honeycomb type underground continuous wall 1, a bearing platform 2, an anchor bolt cage assembly 3 and a reinforcement cage 4.
The honeycomb type underground continuous wall 1 is formed by a plurality of closely arranged honeycomb units 11, and adjacent honeycomb units 11 share a section of wall body. It can be understood that the wall body of the plurality of honeycomb units 11 which are closely arranged is of a continuous structure, namely an integrated wall body, and is formed by one-time pouring.
Further, as shown in fig. 2, the structural shapes of the plurality of honeycomb units 11 constituting the honeycomb type underground continuous wall 1 are the same, and the honeycomb units 11 are of a hollow regular hexagonal prism structure. In other words, the cross section of the honeycomb unit 11 perpendicular to the vertical direction is a regular hexagonal structure. Specifically, in the present embodiment, the outer peripheral profile of the cross section of the honeycomb unit 11 perpendicular to the vertical direction is a regular hexagon, and the inner peripheral profile of the cross section of the honeycomb unit 11 perpendicular to the vertical direction is a regular hexagon, that is, the cross section of the middle hole 12 of the honeycomb unit 11 is a regular hexagon. Alternatively, the inner circumferential profile of the cross section of the honeycomb unit 11 perpendicular to the vertical direction may be circular or other shape, i.e., the cross section of the central hole 12 of the honeycomb unit 11 may be circular or other shape.
In order to make the structure of the honeycomb type underground continuous wall 1 more uniform and reasonable, the honeycomb type underground continuous wall 1 in the present embodiment is formed by arranging seven honeycomb units 11 densely and connecting them to each other. As shown in fig. 2, one cell unit 11 is located at the center, and the remaining six cell units 11 are arranged in order around the cell unit 11 located at the center. It can be understood that the peripheral honeycomb units 11 share a wall with the central honeycomb unit 11, and since the honeycomb units 11 in this embodiment are formed by connecting six walls end to end, the wall of the central honeycomb unit 11 shares with the walls of the other honeycomb units 11. It can also be considered that the honeycomb unit 11 in the middle is formed of six honeycomb units 11 that are sequentially connected in the circumferential direction.
In practical application, compacted soil bodies are arranged outside the honeycomb underground continuous wall 1 and in the inner holes 12, and the soil bodies provide certain compression force for the wall bodies to support the wall bodies. When a fan above the fan foundation 100 is acted by a strong wind force, the bending moment load is downwardly transmitted to the honeycomb type underground continuous wall 1, and each section of wall body of each honeycomb unit 11 forming the honeycomb type underground continuous wall 1 can share the bending moment load together to avoid overturning, so that the honeycomb type underground continuous wall 1 provided by the embodiment of the invention has stronger anti-overturning stability compared with the related art. In addition, because the honeycomb structure of the honeycomb underground continuous wall 1 can bear larger compression force from the external soil under the condition that the inner holes 12 of the honeycomb underground continuous wall are filled with the soil, compared with the related art, the honeycomb underground continuous wall 1 provided by the embodiment of the invention has stronger compression resistance.
Of course, in other embodiments, the cellular underground diaphragm wall 1 may be formed by other numbers of cellular units 11, or the cellular units 11 forming the cellular underground diaphragm wall 1 may have other arrangements, which is not limited by the invention.
It should be noted that the honeycomb unit 11 is not limited to the regular hexagonal prism structure, for example, in other alternative embodiments, the honeycomb unit 11 may also be a regular triangular prism structure, a regular quadrangular prism structure, or the like. As an example, when the honeycomb unit 11 has a regular triangular prism structure, the honeycomb underground continuous wall 1 may be composed of six honeycomb units 11, the six honeycomb units 11 are arranged in sequence along the circumferential direction, and two adjacent honeycomb units 11 share a wall, so as to form the honeycomb underground continuous wall 1 having a regular hexagonal prism-like structure. In addition, the honeycomb units 11 constituting the honeycomb type underground diaphragm wall 1 may include various types, for example, a regular triangular prism structured honeycomb unit 11 and a regular hexagonal prism structured honeycomb unit 11 are mixedly arranged. When the honeycomb unit 11 is not in a regular polygonal prism structure, the construction difficulty is large, and the force on each edge is uneven. Therefore, the honeycomb unit 11 is preferably selected to be in a regular polygon prism structure, so that each section of wall is uniformly stressed, and construction is convenient.
Preferably, the size of the honeycomb underground continuous wall 1 is the same in multiple directions, or the honeycomb underground continuous wall 1 is a symmetrical structure, so that the structure of the wind turbine foundation 100 is more stable and reliable.
Alternatively, the side length of the peripheral outline (regular hexagon) of the cross section of the honeycomb unit 11 perpendicular to the vertical direction is 1.5 to 2.5 m. Further alternatively, the side length of the peripheral outline (regular hexagon) of the cross section of the honeycomb unit 11 perpendicular to the vertical direction is 1.5 to 2.0m, for example, any of 1.5m, 2m, 2.5 m.
Optionally, the thickness of the wall body of the honeycomb underground continuous wall 1 is greater than or equal to 400mm, for example, the thickness of the wall body of the honeycomb underground continuous wall 1 can be selected from any one of 400mm, 500mm, 700mm and 1000 mm.
Alternatively, the strength of the wall body of the honeycomb type underground diaphragm wall 1 is not lower than C20.
Optionally, the height of the honeycomb underground continuous wall 1 is 10-20m, for example, the height of the honeycomb underground continuous wall 1 is any one of 10m, 12m, 14m, 16m, 18m and 20 m.
In this embodiment, the platform 2 is a circular extended base platform. The central axis (vertical direction) of the honeycomb type underground continuous wall 1 and the central axis of the circular expansion foundation bearing platform 2 are on the same straight line. Optionally, the diameter of the circular cross section of the bottom surface of the platform 2 is 8m to 14m, specifically, the length of the circular cross section of the bottom surface of the platform 2 can be any value of 8m, 10m, 12m and 14m, and it should be noted that the diameter of the circular cross section of the bottom surface of the platform 2 should be larger than the maximum width dimension of the honeycomb type underground continuous wall 1.
As shown in fig. 3, the anchor assembly 3 includes a flange 31, an upper anchor plate 32, a high-strength grout 33, an anchor rod 34, and a lower anchor plate 35. The upper anchor plate 32 is located above the bearing platform 2, the space between the upper anchor plate 32 and the upper surface of the bearing platform 2 is filled with high-strength grouting material 33, and the flange 31 is located above the upper anchor plate 32. The lower anchor plate 35 is positioned at the bottom of the bearing platform 2, the anchor rod 4 is positioned in the bearing platform 2, the upper end of the anchor rod penetrates through the flange 31 and is tensioned, and the lower end of the anchor rod is connected with the lower anchor plate 35 to strengthen the strength of the bearing platform 2.
And the reinforcement cage 4 is positioned in the honeycomb type underground continuous wall 1 and is used for enhancing the structural strength of the poured honeycomb type underground continuous wall 1. Preferably, the reinforcement cage 4 is a continuous structure and corresponds to the wall structure of the honeycomb type underground continuous wall 1, so that the structural strength of the honeycomb type underground continuous wall 1 is optimized, or the reinforcement cage 4 is formed by splicing a plurality of sections of reinforcements, so that the construction difficulty is simplified. Alternatively, in other embodiments, the reinforcement cage 4 may be disposed only in a part of the wall body of the honeycomb type underground continuous wall 1 to reduce the construction cost.
Further, as shown in fig. 2, in order to improve the structural stability of the wind turbine foundation 100, the top of the reinforcement cage 4 extends from the top of the honeycomb type underground continuous wall 1 and into the bearing platform 2, so as to improve the connection strength and rigidity between the honeycomb type underground continuous wall 1 and the bearing platform 2. Further, the reinforcement cage 4 extending deep into the platform 2 may be connected to the reinforcement (not shown) inside the platform 2 to further improve the connection strength and rigidity.
Preferably, as shown in fig. 2, the bottom of the reinforcement cage 4 is flush with the bottom of the honeycomb type underground continuous wall 1 to optimize the structural strength of the honeycomb type underground continuous wall 1. Of course, in other embodiments, the bottom of the reinforcement cage 4 may be located above the bottom of the honeycomb underground continuous wall 1, i.e., the reinforcement cage 4 does not need to penetrate the honeycomb underground continuous wall 1 up and down, so as to save the construction cost.
The embodiment of the invention also provides a construction method of the fan foundation 100. The wind turbine foundation 100 is the wind turbine foundation 100 with the honeycomb type underground continuous wall 1 in any one of the embodiments, and the construction method mainly comprises the following steps:
step 1, constructing a guide wall;
and 5, pouring to form a bearing platform.
It should be noted that, the step of forming the honeycomb type underground continuous wall 1 in the step 4 is an integral casting method, and optionally, a conduit method is adopted for underwater concrete casting, and the reinforcement cage 4 in the step 3 is cast therein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A wind turbine foundation having a honeycomb diaphragm wall, comprising: the honeycomb type underground continuous wall is buried in a foundation, the bearing platform is located above the honeycomb type underground continuous wall and connected with the honeycomb type underground continuous wall, the cross section of the honeycomb type underground continuous wall perpendicular to the vertical direction is of a honeycomb structure, a plurality of holes extending along the vertical direction are defined in the honeycomb type underground continuous wall, and soil is filled in the holes.
2. The wind turbine foundation with the honeycomb underground diaphragm wall as claimed in claim 1, wherein the honeycomb underground diaphragm wall comprises a plurality of honeycomb units which are closely arranged, the middle parts of the honeycomb units define the holes, and a section of wall body is shared by adjacent honeycomb units.
3. The fan foundation with the honeycomb type underground continuous wall as claimed in claim 2, wherein the honeycomb unit is a hollow regular polygonal prism structure.
4. The fan foundation with the honeycomb underground diaphragm wall as claimed in claim 2, wherein the honeycomb unit is a hollow regular hexagonal prism structure.
5. The wind turbine foundation having the honeycomb underground diaphragm wall according to claim 4, wherein the honeycomb underground diaphragm wall is composed of seven honeycomb units having the same structure, and six honeycomb units are arranged around the honeycomb unit located at the middle and are connected in sequence.
6. The fan foundation with the honeycomb type underground continuous wall as claimed in claim 4 or 5, wherein the side length of the peripheral outline of the cross section of the honeycomb unit in the vertical and vertical directions is 1.5-2.5 m.
7. The wind turbine foundation having a honeycomb underground diaphragm wall according to any one of claims 1 to 5, wherein the wall thickness of the honeycomb underground diaphragm wall is 400mm or more.
8. The wind turbine foundation having the honeycomb underground diaphragm wall according to any one of claims 1 to 5, wherein the height of the honeycomb underground diaphragm wall in the vertical direction is 10 to 20 m.
9. The wind turbine foundation having a honeycomb underground diaphragm wall according to any one of claims 1 to 5, wherein the honeycomb underground diaphragm wall has a symmetrical structure.
10. A construction method of a wind turbine foundation, characterized in that the wind turbine foundation is the wind turbine foundation according to any one of claims 1 to 9, the construction method comprising the steps of:
step 1, constructing a guide wall;
step 2, performing grooving construction and performing groove cleaning work;
step 3, prefabricating a reinforcement cage and sinking the reinforcement cage into the groove;
step 4, pouring concrete to form the honeycomb type underground continuous wall;
and 5, pouring to form the bearing platform.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210094469.0A CN114837210A (en) | 2022-01-26 | 2022-01-26 | Fan foundation with honeycomb type underground continuous wall and construction method thereof |
| PCT/CN2023/072198 WO2023143148A1 (en) | 2022-01-26 | 2023-01-13 | Wind turbine foundation having honeycomb type underground diaphragm wall and construction method of wind turbine foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210094469.0A CN114837210A (en) | 2022-01-26 | 2022-01-26 | Fan foundation with honeycomb type underground continuous wall and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114837210A true CN114837210A (en) | 2022-08-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210094469.0A Pending CN114837210A (en) | 2022-01-26 | 2022-01-26 | Fan foundation with honeycomb type underground continuous wall and construction method thereof |
Country Status (2)
| Country | Link |
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| CN (1) | CN114837210A (en) |
| WO (1) | WO2023143148A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023143148A1 (en) * | 2022-01-26 | 2023-08-03 | 中国华能集团清洁能源技术研究院有限公司 | Wind turbine foundation having honeycomb type underground diaphragm wall and construction method of wind turbine foundation |
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| US20120070233A1 (en) * | 2010-09-17 | 2012-03-22 | Ensoft, Inc. | Foundation for wind turbine generator |
| CN102359118B (en) * | 2011-08-02 | 2013-12-04 | 北京健安诚岩土工程有限公司 | Annular foundation of underground continuous wall and construction method thereof |
| CN104234069A (en) * | 2013-06-07 | 2014-12-24 | 刘红静 | Offshore wind turbine foundation with plug-in honeycomb structure chassis |
| CN114837210A (en) * | 2022-01-26 | 2022-08-02 | 华能清能通榆电力有限公司 | Fan foundation with honeycomb type underground continuous wall and construction method thereof |
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2022
- 2022-01-26 CN CN202210094469.0A patent/CN114837210A/en active Pending
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- 2023-01-13 WO PCT/CN2023/072198 patent/WO2023143148A1/en unknown
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| JPH07166561A (en) * | 1994-06-06 | 1995-06-27 | Ohbayashi Corp | Construction method for large foundation |
| CN102808530A (en) * | 2012-08-23 | 2012-12-05 | 成都赛珞仓储工程设计有限公司 | Open-web box vertical wall combined honeycomb storage bin |
| CN112854288A (en) * | 2021-03-11 | 2021-05-28 | 同济大学建筑设计研究院(集团)有限公司 | Fan cylindrical foundation consisting of underground continuous walls and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023143148A1 (en) * | 2022-01-26 | 2023-08-03 | 中国华能集团清洁能源技术研究院有限公司 | Wind turbine foundation having honeycomb type underground diaphragm wall and construction method of wind turbine foundation |
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| WO2023143148A1 (en) | 2023-08-03 |
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Application publication date: 20220802 |