CN114108683A - A steel sheet pile cylindrical fan foundation - Google Patents
A steel sheet pile cylindrical fan foundation Download PDFInfo
- Publication number
- CN114108683A CN114108683A CN202111510746.3A CN202111510746A CN114108683A CN 114108683 A CN114108683 A CN 114108683A CN 202111510746 A CN202111510746 A CN 202111510746A CN 114108683 A CN114108683 A CN 114108683A
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- Prior art keywords
- steel sheet
- sheet pile
- foundation
- fan foundation
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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
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
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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
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
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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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- 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
-
- 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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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Foundations (AREA)
Abstract
The invention relates to the technical field of wind power generation, in particular to a steel sheet pile cylindrical fan foundation which comprises a fan tower cylinder, a bearing platform and a hollow sheet pile combined cylinder, wherein the fan tower cylinder is connected to the top of the bearing platform, the sheet pile combined cylinder is arranged at the bottom of the bearing platform and is formed by combining a plurality of steel sheet piles in an occluded mode, and grouting materials are filled in the steel sheet piles. The steel sheet pile cylindrical fan foundation adopted by the invention is occluded through the steel sheet pile, so that the problems of expensive mechanical equipment, complex process and the like in open cut and site construction are avoided, and the foundation is convenient to construct, reliable in structure and good in economical efficiency. Avoiding open cut and disturbing the bearing capacity of the soil body. Compared with the conventional pile foundation, the length of the steel sheet pile is reduced by more than 20%, the diameter of the concrete bearing platform is reduced by more than 20%, the total engineering quantity is reduced by more than 20%, and the construction cost can be reduced under the condition of ensuring the strength of the fan foundation.
Description
Technical Field
The invention relates to the field of wind power generation technology, in particular to a steel sheet pile cylindrical fan foundation.
Background
Wind power generation is clean energy, has the characteristics of environmental protection and regeneration, plays a significant role in the field of national energy, and enters a larger-scale development and construction period along with the promotion of national environmental protection policies and the increase of carbon dioxide emission reduction. The wind speed is large, areas have the condition of flat price on-line, but the foundation cost, the construction difficulty and the construction period of the wind turbine have important influence on the economy of projects, and the losses are caused by the projects near the balance point and even the losses are caused by the cost and the construction period of the foundation construction.
The fan foundation is an important supporting structure of the fan, the fan bears the wind load effect, bending moment and horizontal thrust are generated on the bottom foundation, the wind direction can generate load at 360 degrees, and the stability of the fan foundation is important for the safety of a fan unit.
According to different wind turbine loads and local soil conditions, onshore wind turbine foundations can be divided into gravity foundations, pile foundations, rock bolt foundations, cylindrical foundations and the like. Wherein the cylindrical foundation comprises a PH foundation, a secant pile cylindrical foundation and the like, and the stress characteristics of the cylindrical foundation are mainly shown as follows: the vertical resistance of the soil utilized by the traditional foundation of other types is changed into the combination of the horizontal passive soil pressure and the vertical bearing capacity of the soil, so that the requirement on the geological condition is greatly reduced, and the size and the engineering quantity of the bearing platform are reduced.
The cylindrical foundation is usually dug openly, for example, a PH foundation is usually dug to a foundation pit ten meters deep; in addition, special mechanical construction methods such as secant piles and underground continuous walls are adopted. The open cut forms foundation pits or holes and the like, and the undisturbed soil is disturbed, so that the bearing capacity of the foundation is reduced, and a series of construction problems can be caused, such as large sediment thickness, hole collapse, long construction period, troublesome working procedures and other adverse factors.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a steel sheet pile cylindrical fan foundation.
The invention is realized by the following technical scheme:
the utility model provides a steel sheet pile cylindric fan foundation, includes fan tower section of thick bamboo, cushion cap and hollow sheet pile combination section of thick bamboo, fan tower section of thick bamboo is connected in the cushion cap top, sheet pile combination section of thick bamboo sets up in the cushion cap bottom, sheet pile combination section of thick bamboo is by a plurality of steel sheet pile interlock combinations, the inside packing of steel sheet pile has grout.
Preferably, the strength of the grouting material is greater than or equal to 60 MPa.
Preferably, the steel sheet pile is formed by bending a steel sheet and forms a vertical grouting groove, and a closed steel sheet is arranged at an opening in the length direction of the grouting groove.
Preferably, the thickness of the steel plate pile is greater than or equal to 20 mm.
Preferably, the inside pre-buried grout pipe that is equipped with of grout groove, pre-buried grout pipe sets up in the steel sheet pile below, the distance of the minimum of pre-buried grout pipe to steel sheet pile bottom is less than or equal to 2 m.
Preferably, the bearing platform is made of reinforced concrete; the sheet pile combined barrel is embedded with the bearing platform, and the embedding depth is larger than or equal to 100 mm.
Preferably, the steel sheet pile is provided with anchoring steel bars, the anchoring steel bars extend into the bearing platform, and the anchoring depth of the anchoring steel bars is larger than or equal to 1 m.
Preferably, a plurality of shearing resistant pieces are arranged on the steel sheet pile, and the plurality of shearing resistant pieces are vertically and continuously arranged.
Preferably, a bottom supporting plate is arranged at the bottom of the steel sheet pile, the thickness of the bottom supporting plate is greater than or equal to 5mm, and the yield strength of the bottom supporting plate is greater than or equal to 355 MPa.
Preferably, the outer side of the sheet pile combined cylinder is also provided with a stirring pile.
Compared with the prior art, the invention has the following beneficial effects:
the steel sheet pile cylindrical fan foundation adopted by the invention avoids open cut and disturbance of the bearing capacity of the soil body.
According to the invention, the cement soil mixing pile is arranged outside the steel sheet pile combined cylinder, so that the strength of a soil body on the side wall is increased, and the bearing capacity of the foundation is improved.
The shear resistant part can improve the vertical combination degree between the adjacent steel sheet piles, and contributes to improving the strength of the steel sheet piles.
The grouting material provided by the invention concretes the steel sheet pile, so that the integrity is improved.
The length of the steel sheet pile is reduced by more than 20 percent compared with the length of a conventional pile foundation pile, the diameter of a concrete bearing platform is reduced by more than 20 percent, and the total engineering quantity is reduced by more than 20 percent.
Drawings
FIG. 1 is a three-dimensional view of a steel sheet pile combined barrel fan foundation of the present invention;
FIG. 2 is a front view of the foundation of the fan with steel sheet pile combined barrel of the present invention;
FIG. 3 is a top view of the steel plate composite cylinder of the present invention;
FIG. 4 is a three-dimensional view of a steel sheet pile of the present invention;
fig. 5 is a top view of a steel sheet pile of the present invention.
In the figure, 1, a fan tower; 2. a bearing platform; 3. sheet pile combined cylinder; 4. steel sheet piles; 5. a shear resistant member; 6. a bottom pallet; 7. embedding a grouting pipe; 8. stirring the piles; 9. grouting material; 10. sealing the steel plate; 11. and (5) grouting the slurry tank.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
The invention discloses a steel sheet pile cylindrical fan foundation, which refers to fig. 1 and 2 and comprises a fan tower cylinder 1, a bearing platform 2 and a hollow sheet pile combined cylinder 3, wherein the fan tower cylinder 1 is connected to the top of the bearing platform 2 through a high-strength prestressed anchor bolt assembly, and the sheet pile combined cylinder 3 is arranged at the bottom of the bearing platform 2.
The bearing platform 2 is made of reinforced concrete; the steel sheet pile 4 combined barrel 3 is embedded with the bearing platform 2, and the embedding depth is more than or equal to 100 mm.
Referring to fig. 3, the sheet pile composite cylinder 3 is formed by combining a plurality of steel sheet piles 4 in an engaged manner to form a polygonal cylinder structure.
Referring to fig. 4, the steel sheet pile 4 is formed by bending a steel sheet and forms a vertical grouting groove 11, and a closed steel sheet 10 is arranged at an opening in the length direction of the grouting groove 11.
The thickness of the steel sheet pile 4 is greater than or equal to 20 mm.
And the steel sheet pile 4 is provided with anchoring reinforcing steel bars, the anchoring reinforcing steel bars extend into the bearing platform 2, and the anchoring depth is greater than or equal to 1 m.
Referring to fig. 4 and 5, a plurality of shear resistant members 5 are arranged on the steel sheet piles 4, the plurality of shear resistant members 5 are vertically and continuously arranged, the shear resistant members 5 can realize vertical connection of the steel sheet piles, and vertical combination degree between the adjacent steel sheet piles can be improved.
The bottom of the steel sheet pile 4 is provided with a bottom supporting plate 6, the thickness of the bottom supporting plate 6 is greater than or equal to 5mm, and the yield strength is greater than or equal to 355 MPa.
The inside of the steel sheet pile 4 is filled with grouting material 9. Grouting material 9 can consolidate steel sheet pile 4, has improved the wholeness and the stability of fan foundation.
The strength of the grouting material 9 is greater than or equal to 60 MPa. The strength of the grouting material 9 in this example was 60 MPa.
Inside pre-buried grout pipe 7 that is equipped with of steel sheet pile 4, pre-buried grout pipe 7 sets up in steel sheet pile 4 below, and the distance of the minimum of pre-buried grout pipe 7 to steel sheet pile 4 bottoms is less than or equal to 2 m.
The steel sheet pile 4 outside still is equipped with stirring stake 8, and stirring stake 8 can increase lateral wall soil body intensity, improves basic bearing capacity. The mixing pile 8 in this embodiment is formed by pouring cement.
The construction method of the steel sheet pile combined cylinder fan foundation comprises the following steps:
firstly constructing a cement soil mixing pile 8, continuously sinking the steel sheet pile 4 after the mixing pile 8 is constructed, preliminarily locking to form a steel sheet pile combined cylinder 3, then pouring grouting material into pores through an embedded grouting pipe 7, solidifying, excavating a foundation pit after the strength of the grouting material 9 meets the requirement, welding steel bars at the top of the steel sheet pile 4, binding a steel reinforcement cage of the reinforced concrete bearing platform 2, and pouring the bearing platform 2. The bearing platform 2 is embedded with a high-strength prestressed anchor bolt assembly and is connected with the fan tower barrel 1.
The steel sheet pile cylindrical fan foundation adopted by the invention is occluded by the steel sheet pile 4, so that the problems of expensive mechanical equipment, complex process and the like in open cut and field construction are avoided, and the foundation is convenient to construct, reliable in structure and good in economical efficiency. Avoiding open cut and disturbing the bearing capacity of the soil body. The length of the steel sheet pile 4 is reduced by more than 20% compared with the length of a conventional pile foundation pile, the diameter of the concrete bearing platform 2 is reduced by more than 20%, the total engineering quantity is reduced by more than 20%, and the construction cost can be reduced under the condition of ensuring the strength of a fan foundation.
Claims (10)
1. The utility model provides a steel sheet pile cylindric fan basis, its characterized in that includes fan tower section of thick bamboo (1), cushion cap (2) and hollow sheet pile combination section of thick bamboo (3), fan tower section of thick bamboo (1) is connected in cushion cap (2) top, sheet pile combination section of thick bamboo (3) set up in cushion cap (2) bottom, sheet pile combination section of thick bamboo (3) are by a plurality of steel sheet pile (4) interlock combination, steel sheet pile (4) inside packing has grout material (9).
2. The steel sheet pile tubular fan foundation of claim 1, wherein the strength of the grouting material (9) is greater than or equal to 60 MPa.
3. The steel sheet pile cylindrical fan foundation of claim 1, wherein the steel sheet pile (4) is formed by bending a steel sheet and forms a vertical grouting groove (11), and a closed steel sheet (10) is arranged at an opening in the length direction of the grouting groove (11).
4. A steel sheet pile cylindrical fan foundation according to claim 3, characterised in that the steel sheet thickness of the steel sheet pile (4) is greater than or equal to 20 mm.
5. The cylindrical fan foundation of steel sheet pile as claimed in claim 3, wherein an embedded grouting pipe (7) is arranged in the grouting groove (11), the embedded grouting pipe (7) is arranged below the steel sheet pile (4), and the distance from the lowest position of the embedded grouting pipe (7) to the bottom of the steel sheet pile (4) is less than or equal to 2 m.
6. The steel sheet pile tubular fan foundation of claim 1, wherein the bearing platform (2) is made of reinforced concrete; the sheet pile combined barrel (3) is embedded with the bearing platform (2), and the embedding depth is greater than or equal to 100 mm.
7. The steel sheet pile cylindrical fan foundation of claim 6, wherein the steel sheet pile (4) is provided with anchoring steel bars, the anchoring steel bars extend into the bearing platform (2), and the anchoring depth of the anchoring steel bars is greater than or equal to 1 m.
8. The steel sheet pile cylindrical fan foundation according to claim 1, wherein a plurality of shear resistant members (5) are provided on the steel sheet pile (4), and the plurality of shear resistant members (5) are vertically arranged in series.
9. The steel sheet pile cylindrical fan foundation of claim 1, wherein a bottom supporting plate (6) is arranged at the bottom of the steel sheet pile (4), the thickness of the bottom supporting plate (6) is greater than or equal to 5mm, and the yield strength of the bottom supporting plate (6) is greater than or equal to 355 MPa.
10. The steel sheet pile cylindrical fan foundation of claim 1, wherein a stirring pile (8) is further arranged on the outer side of the sheet pile combined cylinder (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111510746.3A CN114108683A (en) | 2021-12-10 | 2021-12-10 | A steel sheet pile cylindrical fan foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111510746.3A CN114108683A (en) | 2021-12-10 | 2021-12-10 | A steel sheet pile cylindrical fan foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114108683A true CN114108683A (en) | 2022-03-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111510746.3A Pending CN114108683A (en) | 2021-12-10 | 2021-12-10 | A steel sheet pile cylindrical fan foundation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114108683A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201033438A (en) * | 2008-12-25 | 2010-09-16 | Nippon Steel Corp | Steel sheet pile wall and constructing method thereof |
| CN111851567A (en) * | 2020-08-20 | 2020-10-30 | 天津大学 | Newly built or expanded wind power foundation on shallow cover layer of weak foundation and its construction method |
| CN112922020A (en) * | 2021-03-11 | 2021-06-08 | 同济大学建筑设计研究院(集团)有限公司 | Fan cylindrical foundation consisting of secant piles and construction method |
-
2021
- 2021-12-10 CN CN202111510746.3A patent/CN114108683A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201033438A (en) * | 2008-12-25 | 2010-09-16 | Nippon Steel Corp | Steel sheet pile wall and constructing method thereof |
| CN111851567A (en) * | 2020-08-20 | 2020-10-30 | 天津大学 | Newly built or expanded wind power foundation on shallow cover layer of weak foundation and its construction method |
| CN112922020A (en) * | 2021-03-11 | 2021-06-08 | 同济大学建筑设计研究院(集团)有限公司 | Fan cylindrical foundation consisting of secant piles and construction method |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Deng Mingji Inventor after: Tan Guangdao Inventor after: Xu Chao Inventor after: Meng Xiujun Inventor after: Wang Dejun Inventor after: Xu Hongfei Inventor after: Zhu Yurui Inventor after: Hu Hui Inventor before: Deng Mingji Inventor before: Tan Daoguang Inventor before: Xu Chao Inventor before: Meng Xiujun Inventor before: Wang Dejun Inventor before: Xu Hongfei Inventor before: Zhu Yurui Inventor before: Hu Hui |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220301 |