CN113047333A - Land flood control fan foundation structure - Google Patents
Land flood control fan foundation structure Download PDFInfo
- Publication number
- CN113047333A CN113047333A CN202110476024.4A CN202110476024A CN113047333A CN 113047333 A CN113047333 A CN 113047333A CN 202110476024 A CN202110476024 A CN 202110476024A CN 113047333 A CN113047333 A CN 113047333A
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- Prior art keywords
- flood
- flood control
- retaining wall
- fan foundation
- foundation structure
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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
- E02D27/32—Foundations for special purposes
- E02D27/44—Foundations for machines, engines or ordnance
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Foundations (AREA)
Abstract
The invention provides a land flood control fan foundation structure which comprises a fan foundation structure body, wherein a flood control retaining wall structure of an annular structure is arranged at the top of the fan foundation structure body, and a tower cylinder is arranged at the top of the fan foundation structure body and is arranged in an inner cavity of the flood control retaining wall structure; the fan foundation structure body and the flood control retaining wall structure are separately designed, so that when the flood level reaches a higher area, the flood control retaining wall structure is added on the existing fan foundation structure and is connected with the existing fan foundation structure; the long platform column does not need to be checked, the reliability of basic design is improved, and the requirements of different flood level heights can be met.
Description
Technical Field
The invention relates to the technical field of wind generating set foundations, in particular to a land flood control fan foundation structure.
Background
The installed capacity of wind power in China is rapidly increased, the large-scale trend of a fan is accelerated, the construction cost of a wind power plant is urgently required to be reduced in various aspects, and the construction period of the wind power plant is shortened. The geology of some wind-powered electricity generation field district is complicated, and the flood level is higher, leads to traditional fan foundation form to raise the column, and the length of column reaches the length more than 3m, and the height of whole basis can reach about 8m, and concrete and reinforcing bar volume all increase more. From the design perspective, the great length of the column can lead to the root of the cylinder to be stressed greatly, and the safety of the fan operation is reduced. The traditional foundation is high in construction cost and poor in applicability, so that a new fan foundation form is needed to adapt to areas with high flood, construction cost is reduced, and construction period is shortened.
When the foundation of the traditional foundation fan is designed, the height of the upper surface of the table column is 0.5m higher than the designed flood level plus the safety superelevation; this foundation has the disadvantages of long construction time and high cost.
Disclosure of Invention
The invention aims to provide a land flood control fan foundation structure, which is designed separately from a flood control structure, so that the foundation design does not need to consider the form of long table posts to meet the requirement of flood level, and the integrity and the stability of the flood control structure are good.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides a land flood control fan foundation structure which comprises a fan foundation structure body, wherein a flood control retaining wall structure of an annular structure is arranged at the top of the fan foundation structure body, and a tower barrel is arranged at the top of the fan foundation structure body and is arranged in an inner cavity of the flood control retaining wall structure.
Preferably, the fan foundation structure body comprises a bearing platform, and a platform column is arranged at the top of the bearing platform; flood control barricade structure and tower section of thick bamboo all set up the top at the stage post.
Preferably, the tower cylinder and the table column are connected through anchor bolt assemblies embedded in the table column.
Preferably, the flood control retaining wall structure is connected with the stand column through embedded connecting pieces embedded in the stand column.
Preferably, the bottom of the bearing platform is provided with a plurality of pile foundations which are uniformly distributed along the circumferential direction of the bearing platform.
Preferably, the distance between the flood control retaining wall structure and the tower is more than 0.5 m.
Preferably, the flood control retaining wall structure is an annular reinforced concrete or annular steel structure, wherein when the flood control retaining wall structure is a steel structure, the wall thickness is 10 mm-300 mm, and the strength is Q235 or Q335; when the flood control retaining wall structure is a concrete structure, the wall thickness is 10 mm-100 mm, and the strength is greater than C20.
Preferably, the height of the upper surface of the flood control retaining wall structure is higher than the designed flood level and the safety superelevation by 0.5 m.
Compared with the prior art, the invention has the beneficial effects that:
according to the land flood control fan foundation structure provided by the invention, the fan foundation structure body and the flood control retaining wall structure are separately designed, so that when the flood level reaches a higher area, the flood control retaining wall structure is added on the existing fan foundation structure and is connected with the existing fan foundation structure; the long platform column does not need to be checked, the reliability of basic design is improved, and the requirements of different flood level heights can be met.
Furthermore, the conventional long-column foundation needs to be cast with lower concrete during construction, which belongs to large-volume concrete casting, and the conventional long-column foundation is difficult to perform formwork support and steel bar binding during construction due to the fact that the columns are high; the height of the column of the invention is lower than that of the traditional column, thereby avoiding the complex reinforcing steel bar binding process and the large-volume concrete pouring process, saving the construction period by more than 10 percent and saving the whole construction cost by more than 5 percent.
Drawings
Fig. 1 is a front sectional view of a land-based flood protection fan infrastructure of the present invention.
Fig. 2 is a top view of a land-based flood protection fan infrastructure of the present invention.
In the figure: the method comprises the following steps of 1-tower barrel, 2-anchor bolt assembly, 3-flood control retaining wall structure, 4-bearing platform, 5-pile foundation, 6-flood level, 7-platform column, 8-embedded connecting piece and 9-waterproof airtight door.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1-2, an embodiment of the present invention provides a land flood protection blower foundation structure, which includes an anchor bolt assembly 2, a flood protection retaining wall structure 3, a bearing platform 4, a pile foundation 5, a pillar 7, an embedded connector 8, and a waterproof airtight door 9, wherein the bearing platform 4 is a circular truncated cone structure, the pillar 7 is disposed on the top of the circular truncated cone structure, and the pillar 7 is a cylindrical structure; the top of the platform column 7 is provided with a flood control retaining wall structure 3, and the flood control retaining wall structure 3 is annular reinforced concrete or annular steel structure.
The top of platform post 7 is provided with a tower section of thick bamboo 1, a tower section of thick bamboo 1 is arranged in flood control barricade structure 3's inner chamber.
The table column 7 and the tower drum 1 are connected through an anchor bolt assembly 2 pre-buried in the table column 7.
The bottom of cushion cap 4 is provided with a plurality of pile foundations 5, and a plurality of pile foundations 5 are along the circumferencial direction equipartition of cushion cap 4.
The table column 7 and the bearing platform 4 are of an integrated structure.
Be provided with waterproof airtight door 9 on the flood control barricade structure 3, it is inside that personnel get into overhauls.
The distance between flood control retaining wall structure 3 and tower section of thick bamboo 1 is greater than 0.5m, and the later stage crab-bolt stretch-draw construction space of being convenient for is enough.
The flood control retaining wall structure 3 is in a ring-shaped reinforced concrete or steel structure, wherein when the flood control retaining wall structure 3 is in a steel structure, the wall thickness is 10 mm-300 mm, and the strength is Q235 or Q335; when the flood control retaining wall structure 3 is a concrete structure, the wall thickness is 10 mm-100 mm, and the strength is more than C20.
The height of the flood control retaining wall structure 3 is determined according to the historical highest flood level or the design flood level, and the height of the upper surface of the general flood control retaining wall structure 3 is higher than the design flood level and is higher than the safety superelevation by 0.5 m.
The outer side of the flood control retaining wall structure 3 needs to be coated with waterproof paint, and the service life of 50 years needs to be met.
The diameter of the table column 7 is 5-9 m, the height is 3-6 m, and the strength is more than C40.
The anchor bolt material of the anchor bolt assembly 2 is 42CrMo alloy steel, and the model is M36-M64, so that the service life is not less than 20 years.
The end part of the anchor bolt assembly 2 needs to be subjected to special anti-corrosion treatment, the body is preferably subjected to Dacromet treatment, and a protective cap is arranged and is filled with lithium-based grease lubricant with the mass 2 label.
The pile foundation 5 is suitable for all geological conditions, but rock conditions are not recommended. Depending on the flood level, common geological conditions include, but are not limited to, silt, sandy soil, silt, and the like. The pile foundation 5 is used for providing the anti-pulling and anti-pressing effects by the side friction resistance and the end resistance together. According to different geological conditions, different pile types are selected, such as mixing piles, precast piles and the like.
The bearing platform 4 is made of C30-C60 reinforced concrete, the bottom of the bearing platform is circular, the diameter of the bottom of the bearing platform is about 16-23 m, and the steel bars need to meet the requirements of relevant specifications.
The pillar is connected with the flood control retaining wall structure through the embedded connecting piece 8. The pre-buried connecting piece 8 is made of low-alloy high-strength structural steel or carbon structural steel, the diameter of the pre-buried connecting piece is 8-28 mm, ribs are arranged on the pre-buried connecting piece, and the yield strength of the pre-buried connecting piece is 215-355N/mm2The arrangement mode is that the annular interval is 50mm ~ 200mm, and 2 layers are no less than to radial interval, mainly is fixed flood control barricade structure. Can finish the construction of the table column and carry out the construction of a special flood control retaining wall. Or, the flood control retaining wall and the platform column are integrally cast.
The anchor bolt assembly 2 comprises a plurality of studs, the studs are arranged into two concentric circles by taking the center as a circle center, and all the studs on the two concentric circles are uniformly distributed. The foundation and the tower cylinder are in straight flexible connection, stress is reasonable, stress concentration is reduced, and reliability is improved. The stud is made of 42CrMo alloy steel, and the model is M36-M64, so that the service life of the bolt 5 is not less than 20 years.
In order to facilitate understanding of the invention, the construction method of the onshore flood control fan foundation structure comprises the following steps:
step 1: determining the size and the number of the pile foundations 5 according to the geological condition and the pile test result, measuring and positioning on site, and performing construction on the pile foundations 5;
step 2: after the pile foundation construction is finished, fixing the anchor bolt assembly 2, and then binding the reinforcing steel bars of the bearing platform 4;
and step 3: in the process of binding the reinforcing steel bars of the bearing platform 4, fixing the embedded connecting piece 8 at the corresponding position of the platform column 7, and connecting the embedded connecting piece and the reinforcing steel bars together;
and 4, step 4: pouring concrete into the bearing platform 4, and simultaneously pouring the platform column 7;
and 5: when the flood control retaining wall structure 3 is a steel structure, the flood control retaining wall structure is directly fixedly connected with the embedded connecting piece 8 through bolts. When the flood control retaining wall structure 3 is a concrete structure, corresponding steel bars are bound to be connected with the embedded connecting pieces 8, and then concrete is poured;
step 6: in the construction process of the flood control retaining wall structure 3, reserving a position, and finally installing a waterproof airtight door; and finally, performing waterproof treatment on the outer side of the flood control retaining wall structure 3.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The utility model provides a land flood control fan foundation structure, its characterized in that, includes fan foundation structure body, the top of fan foundation structure body is provided with ring structure's flood control barricade structure (3), and wherein, a tower section of thick bamboo (1) is arranged at the top of fan foundation structure body, and arranges in the inner chamber of flood control barricade structure (3).
2. A land flood protection fan infrastructure according to claim 1, characterized in that the fan infrastructure body comprises a bearing platform (4), the top of the bearing platform (4) is provided with a platform column (7); flood control barricade structure (3) and tower section of thick bamboo (1) all set up the top at stand (7).
3. A land flood protection fan foundation structure according to claim 2, wherein the tower (1) and the platform columns (7) are connected through anchor bolt assemblies (2) pre-buried in the platform columns (7).
4. A land flood control fan foundation structure according to claim 2, wherein the flood control retaining wall structure (3) is connected with the pillars (7) through pre-embedded connecting pieces (8) pre-embedded in the pillars (7).
5. A land flood protection fan foundation structure according to claim 2, wherein the bottom of the platform 4 is provided with a plurality of pile foundations (5), and the plurality of pile foundations (5) are uniformly distributed along the circumferential direction of the platform (4).
6. A land flood protection wind turbine foundation structure according to claim 1, wherein the distance between the flood protection retaining wall structure (3) and the tower (1) is larger than 0.5 m.
7. A land flood protection blower substructure as claimed in claim 1, wherein said flood protection retaining wall structure (3) is of annular reinforced concrete or annular steel structure, wherein, when the flood protection retaining wall structure (3) is of steel structure, the wall thickness is 10 mm-300 mm, and the strength is Q235 or Q335; when the flood control retaining wall structure (3) is a concrete structure, the wall thickness is 10 mm-100 mm, and the strength is higher than C20.
8. A land flood protection fan foundation structure according to claim 1, wherein the height of the upper surface of the flood protection retaining wall structure (3) is 0.5m higher than the designed flood level plus the safety height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110476024.4A CN113047333A (en) | 2021-04-29 | 2021-04-29 | Land flood control fan foundation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110476024.4A CN113047333A (en) | 2021-04-29 | 2021-04-29 | Land flood control fan foundation structure |
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| Publication Number | Publication Date |
|---|---|
| CN113047333A true CN113047333A (en) | 2021-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110476024.4A Pending CN113047333A (en) | 2021-04-29 | 2021-04-29 | Land flood control fan foundation structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114541469A (en) * | 2022-03-01 | 2022-05-27 | 上海电力设计院有限公司 | Flood control structure suitable for desert gobi terrain and construction method |
-
2021
- 2021-04-29 CN CN202110476024.4A patent/CN113047333A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114541469A (en) * | 2022-03-01 | 2022-05-27 | 上海电力设计院有限公司 | Flood control structure suitable for desert gobi terrain and construction method |
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