CN113833008B - Method and structure for transforming existing foundation ring type fan foundation - Google Patents
Method and structure for transforming existing foundation ring type fan foundation Download PDFInfo
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- CN113833008B CN113833008B CN202110969492.5A CN202110969492A CN113833008B CN 113833008 B CN113833008 B CN 113833008B CN 202110969492 A CN202110969492 A CN 202110969492A CN 113833008 B CN113833008 B CN 113833008B
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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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/44—Foundations for machines, engines or ordnance
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D37/00—Repair of damaged foundations or foundation structures
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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
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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
- E02D2600/00—Miscellaneous
- E02D2600/30—Miscellaneous comprising anchoring details
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/728—Onshore wind turbines
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Abstract
The invention relates to a method and a structure for transforming an existing foundation ring type fan foundation, belonging to the technical field of identification and reinforcement, wherein the method comprises the following steps: excavating original reinforced concrete in the existing foundation ring, and drilling holes at the bottom of the inner part of the existing foundation ring for planting ribs; embedding a plurality of anchor bolt rods in the circumferential direction in the excavated existing foundation ring, wherein the height of each anchor bolt rod is greater than that of the foundation ring; the method can utilize the structure of the original fan foundation and the excellent machine position of the original wind field, not only can reduce the problem of environmental damage caused by machine position replacement, but also has remarkable economic benefit.
Description
Technical Field
The invention belongs to the technical field of identification and reinforcement, and particularly relates to a method and a structure for modifying an existing foundation ring type fan foundation.
Background
The service life of the fan is generally 20-25 years, and the wind field needs to be modified after the service is finished. In 2019, 1 month, the first original wind field upgrading and transformation project in China, namely the first 220kW fan in Tongliao city, is used for grid-connected power generation. According to the project, wind generating sets with single machine capacity of 850kW are dismantled, wind generating sets with single machine capacity of 2200kW and 2300kW are newly built in an original wind field area, and the number of fans is reduced from 58 fans to 22 fans. However, this retrofit project fails to utilize the original wind turbine foundation. The newly-built fan foundation causes vegetation damage and waste of the original fan foundation, and is not beneficial to the realization of the aims of carbon peak reaching and carbon neutralization in China.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a method and a structure for modifying an existing foundation ring type fan foundation.
The embodiment of the invention provides a method for transforming an existing foundation ring type fan foundation, which comprises the following steps:
excavating original reinforced concrete in the existing foundation ring, and drilling holes at the bottom of the inner part of the existing foundation ring to plant bars;
embedding a plurality of anchor bolt rods in the circumferential direction in the excavated existing foundation ring, wherein the height of each anchor bolt rod is greater than that of the foundation ring;
and pouring new reinforced concrete into the hollowed inside of the existing foundation ring, wherein the strength of the poured new reinforced concrete is greater than that of the original reinforced concrete.
Furthermore, after the original reinforced concrete in the existing foundation ring is excavated, a plurality of stiffening plates are fixed on the inner wall of the existing foundation ring in the circumferential direction.
Furthermore, when the height of the poured new reinforced concrete is higher than the original reinforced concrete and lower than the top surface of the foundation ring, a layer of pressure bearing area is arranged in the circumferential direction of the top of the new reinforced concrete.
Further, when the bar is planted in the drilling hole, the bar planting hole is drilled in a static drilling mode, bar planting glue is injected in the range of 2/3 of the depth of the bar planting hole, then the steel bar is inserted, and finally the bar planting glue is filled in the bar planting hole.
Furthermore, an annular groove is dug in the outer side of the outer ring beam of the existing foundation ring, an expanding outer ring beam is placed in the annular groove, the expanding outer ring beam is connected with the original outer ring beam of the foundation ring, and then the annular groove is poured.
And further, removing the residue soil above the original outer ring beam bottom plate of the foundation ring, and then binding reinforcing steel bars on the outer ring beam bottom plate to finish the pouring of the bottom plate stiffening beam.
Furthermore, a circle of diameter increasing bottom plate is arranged on the outer side of the foundation bottom plate of the existing foundation ring, and a circle of hole digging foundation or rock anchor rod foundation can be arranged below the diameter increasing bottom plate.
Furthermore, steel fiber and carbon fiber materials are added into the new reinforced concrete.
The embodiment of the invention also provides a transformation structure formed by adopting any one of the foundation ring type fan foundation transformation methods, the structure comprises an existing foundation ring, a plurality of vertically placed anchor rods are arranged in the existing foundation ring in the circumferential direction, and the length of each anchor rod is greater than the height of the existing foundation ring.
Furthermore, a pressure bearing area is arranged at the top of the reinforced concrete inside the existing foundation ring, and the top surface of the pressure bearing area is flush with the top surface of the flange plate at the top of the existing foundation ring.
The invention has the following beneficial effects:
therefore, the existing foundation ring type fan foundation improvement provided by the implementation of the invention can fully utilize the excellent position of the original fan position and most structures of the existing foundation, the integral strength of the existing foundation ring is enhanced by removing the concrete in the foundation ring, implanting steel bars at the bottom and embedding a plurality of vertical anchor bolts, implanting steel bars at the bottom and newly-injected reinforced concrete, and simultaneously the length of the anchor bolts is greater than the height of the original foundation ring, so that the width of the flange plate at the bottom of the fan cylinder to be installed can be increased, the inner part of the flange plate at the bottom of the fan cylinder to be installed can be connected with the anchor bolts embedded in the original foundation ring, and the outer part of the flange plate is connected with the flange plate on the original foundation ring through bolts, so that the problem that the fan cylinder is connected with the existing foundation ring after replacement is solved, the connection mode can utilize the original foundation ring for connection, and further compound the anchor bolt connection mode, the connection mode can improve the connection strength between the fan cylinder and the foundation after replacement, and is particularly suitable for the situation that a low-power fan is replaced into a high-power fan.
Drawings
FIG. 1 is an elevation view of an existing foundation ring base provided by an embodiment of the present invention;
FIG. 2 is a modified front view of an existing foundation ring provided by an embodiment of the present invention;
FIG. 3 is a structural diagram of the existing foundation ring after being transformed to connect with a newly installed wind turbine according to an embodiment of the present invention;
FIG. 4 is an elevation view of an existing foundation ring base reinforcement scheme provided by an embodiment of the present invention;
fig. 5 is a top view of an existing foundation ring basic reinforcement scheme provided by an embodiment of the present invention.
In the figure: 1. the foundation ring comprises an existing foundation ring, 2, an existing foundation ring outer ring beam, 3, an existing foundation ring bottom plate, 4, an anchor bolt connecting structure, 5, an existing foundation ring top surface, 7, steel bars, 8, an expanded diameter outer ring beam, 9, a bottom plate stiffening beam, 10, a diameter increasing bottom plate, 11, an existing foundation ring top flange plate, 12, an existing foundation ring inner wall, 13, a foundation ring stiffening plate, 14, a fan cylinder wall, 15, a fan cylinder bottom flange plate, 16, a first anchor bolt rod, 17, a second anchor bolt rod, 18, bolts, 19, a high-performance pressure-bearing area, 20 and an excavated foundation.
Detailed Description
As shown in fig. 1, an embodiment of the present invention provides a method for transforming an existing foundation ring type wind turbine foundation, where the method includes the following steps:
(1) Excavating the original reinforced concrete in the existing foundation ring 1, reserving the ring-through ribs in the existing foundation ring 1, and planting the ribs at the bottom of the excavated existing foundation ring 1;
considering that a part of the area which can be excavated exists in the existing foundation ring 1, the reinforced concrete in the area is excavated, the original concrete in the foundation ring is excavated, and then the bar planting operation is performed, wherein the bar planting operation needs to drill the inside of the foundation ring in advance and then perform the bar planting operation in the foundation ring, so that the overall strength of the existing foundation ring is enhanced.
Specifically, when 7 operations of bar planting are carried out, the depth of a bar planting hole is not less than 15 times of the diameter of a steel bar, and meanwhile, a static force drilling hole is needed for bar planting drilling, so that a hand chisel is not needed.
The bar planting hole inner wall should have certain roughness, should not smooth, need carry out clear hole after having bored the bar planting hole simultaneously, clear hole adopts scrubbing brush or stereoplasm nylon brush to clean the pore wall, and the bar planting is downthehole simultaneously will be faint to blow clean and use water to wash clean with compressed air, and the steel wire brush is clean for the inserted part that will need bar planting 7 at last again, then slowly rotates in the inserted hole.
In order to enhance the firmness of the implanted steel bar, when the static drilling mode is adopted for drilling, firstly, the steel bar planting glue is injected in the range of 2/3 of the depth of the steel bar planting hole, then the steel bar is inserted, and finally, the steel bar planting hole is filled with the steel bar planting glue, so that the connectivity between the steel bar and the wall hole is improved.
As shown in fig. 3, in order to further enhance the overall strength of the existing foundation ring, a plurality of foundation ring stiffening plates 13 may be disposed in the circumferential direction of the inner wall 12 of the existing foundation ring, wherein the number and size of the foundation ring stiffening plates 13 need to be calculated, and this structure may improve the overall bearing capacity of the existing foundation ring 1 and improve the connection strength between the existing foundation ring 1 and the internally cast concrete.
(2) Uniformly embedding a plurality of anchor bolts in the inner circumferential direction of the existing excavated foundation ring 1;
specifically, a plurality of anchor rods are embedded in the existing foundation ring 1 which is dug out to form an anchor connecting structure 4, and the top of the anchor rods is close to the edge of a flange 11 at the top of the existing foundation ring without contacting.
The number and length of the anchor rods are determined according to the structure of the fan barrel mounted on the top of the existing foundation ring.
(3) Pouring new reinforced concrete into the existing hollowed foundation ring 1, wherein the height of the poured new reinforced concrete is higher than that of the original reinforced concrete in the foundation ring or higher than the top surface 5 of the existing foundation ring, and meanwhile, the strength of the new reinforced concrete is higher than that of the original reinforced concrete;
specifically, original reinforced concrete is dug in a foundation ring, then, after steel bars are planted and anchor bolt rods are buried, scraps in the foundation ring are removed, before new reinforced concrete is prepared to be poured, contact parts of the new and old concrete are cleaned by water, then, water is sprayed for wetting for 24 hours, and then, an interface agent is scraped in the foundation ring to ensure the binding force between the new and old components.
The height of the poured concrete can be flush with or not flush with the top flange 11 of the existing foundation ring, but does not exceed the height of the top flange 11 of the existing foundation ring, when the poured concrete has a certain height away from the top surface of the foundation ring, a layer of high-performance bearing area 19 can be arranged at the top of the poured concrete, and the high-performance bearing area 19 is an annular body, so that the bottom force of a cylinder body needing to be provided with a fan can be transmitted into the poured new reinforced concrete through the high-performance bearing area 19.
Therefore, the existing foundation ring type fan foundation improvement provided by the implementation of the invention can fully utilize the excellent position of the original fan position and most structures of the existing foundation, the width of the flange plate at the bottom of the fan to be installed can be increased by removing the concrete in the foundation ring, implanting steel bars at the bottom and embedding anchor bolts, wherein the length of the anchor bolts is greater than the height of the original foundation ring, so that the inside of the flange plate at the bottom of the fan to be installed can be connected with the anchor bolts embedded in the original foundation ring, and the outside of the flange plate is connected with the flange plate on the original foundation ring through bolts, thereby solving the problem of connection with the foundation after the fan cylinder is replaced. This connected mode can utilize former basic ring to connect, and then compound crab-bolt connected mode, can improve the joint strength who changes a back fan section of thick bamboo and basis, and the specially adapted miniwatt fan changes the condition for high-power fan.
After the existing foundation ring is transformed, the flange plate at the bottom of the fan cylinder to be installed can be widened, then the inner side of the flange plate at the bottom of the fan cylinder is fixed with the bolt rods embedded in the foundation ring through nuts, the outer side of the flange plate is connected with the flange plate 11 at the top of the existing foundation ring through bolts 18, as shown in fig. 3, the inner side of the flange plate 15 at the bottom of the fan cylinder in the embodiment is connected with a first anchor bolt rod 16 and a second anchor bolt rod 17 in the existing foundation ring, wherein the first anchor bolt rod 16 is positioned at the inner side of the fan cylinder wall 14, and the second anchor bolt rod 17 is positioned at the outer side of the fan cylinder wall 14.
When a high-power fan is installed on the existing foundation ring and the bearing capacity of the outer ring beam of the foundation ring is insufficient, the overall bearing capacity can be enhanced by additionally arranging the expanded outer ring beam 8, which is shown in fig. 4.
Specifically, an outer ring groove is formed by slotting and drilling the outer side of the existing foundation ring outer ring beam 2, referring to fig. 2 and fig. 4, chiseling operation is performed in the outer ring groove, the chiseling depth needs to be 15-40 mm, then bar planting operation is performed in the outer ring groove, steel bars implanted in the outer ring groove need to be connected with steel bars of the original ring beam, so that the integral bearing capacity of the outer ring beam can be improved, then residues on the surface of the outer ring groove are removed, the outer ring groove is cleaned with clear water, water is sprayed for wetting for 24 hours, and finally an interface agent is scraped.
Further, after the reinforcing steel bars are bound and the formwork is supported, the casting operation of the outer ring beam 8 with the diameter expanded is carried out.
When the load that the fan received after the change is great, when current foundation ring bottom plate 3 bearing capacity can not satisfy the designing requirement, at first carry out foundation bottom plate at first and consolidate, just can carry out a fan section of thick bamboo installation.
When the foundation ring bottom plate is reinforced, a foundation pit is excavated, then the residue soil above the foundation ring bottom plate is removed, then bar planting operation is carried out, specifically, binding steel bars and supporting templates are also carried out, and finally pouring of the bottom plate stiffening beam 9 is completed.
Referring to fig. 2 and 5, when the existing foundation ring bottom plate is not enough to meet the bearing capacity requirement, a diameter increasing bottom plate 10 can be arranged on the outer side of the foundation ring bottom plate, a circle of hole digging foundations 20 can be arranged below the diameter increasing bottom plate 10, the diameter increasing bottom plate 10 is annular, original ring beams of the foundation ring are connected through planting bars in the horizontal direction to improve the bearing capacity of the bottom plate, and the hole digging foundations 20 are uniformly arranged along the periphery of the original foundation outer ring and are continuously poured with the diameter increasing bottom plate 10 and a bottom plate stiffening beam 9 to jointly improve the bearing capacity of the foundation ring bottom plate.
Specifically, the outer side of the outer ring bottom plate of the existing foundation is dug to a specified depth in a manual hole digging mode, the safety of workers is guaranteed during hole digging operation, and a protective wall can be arranged and measures such as oxygen delivery can be adopted according to actual requirements.
Further, a reinforcement cage is bound and placed, and the longitudinal reinforcements of the excavation foundation 20 have enough anchoring length, so that the connection reliability of the excavation foundation 20 and the upper diameter-increasing bottom plate 10 is ensured.
It should be noted that, when the foundation 20 is not convenient for construction, the foundation can be replaced by a rock anchor rod foundation, the number, diameter and number of turns of the foundation can be set according to actual needs, when the foundation is selected, the foundation is uniformly supplemented and supplemented along the periphery of the outer ring of the original foundation, a plurality of turns can be laid, and the top of the anchor bar is anchored on the warp increasing bottom plate, so that the bending moment resistance of the foundation can be improved.
Referring to fig. 2 and 3, an embodiment of the present invention further provides an existing foundation ring type wind turbine foundation transformation structure, which includes an existing foundation ring 1, wherein a plurality of vertically disposed anchor rods are installed in the existing foundation ring 1 in a circumferential direction, and a length of each anchor rod is greater than a height of the existing foundation ring 1. And a pressure-bearing area is arranged at the top of the reinforced concrete inside the existing foundation ring, and the top surface of the pressure-bearing area is flush with the top surface of the flange plate at the top of the existing foundation ring.
The difficult problem of being connected with the basis after a fan section of thick bamboo is changed has been solved to the current basic ring type fan basis transformation structure that this embodiment provided. The connection mode can utilize the original foundation ring for connection, and further the anchor bolt connection mode is compounded, so that the connection strength between the fan cylinder and the foundation after replacement can be improved, and the method is particularly suitable for the condition that a low-power fan is replaced by a high-power fan;
finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive changes in the technical solutions of the present invention.
Claims (9)
1. A method for transforming an existing foundation ring type fan foundation is characterized by comprising the following steps:
excavating original reinforced concrete in the existing foundation ring, and drilling holes at the bottom of the inner part of the existing foundation ring for planting ribs;
embedding a plurality of anchor rods in the circumferential direction in the excavated existing foundation ring, wherein the height of each anchor rod is greater than that of the existing foundation ring; ensuring that the top of the anchor rods is close to but not contacted with the flange edge at the top of the existing foundation ring;
pouring new reinforced concrete into the inner part of the excavated existing foundation ring, wherein the height of the poured new reinforced concrete is higher than that of the original reinforced concrete in the foundation ring or higher than the top surface of the existing foundation ring; the strength of the poured new reinforced concrete is greater than that of the original reinforced concrete;
the height of the poured concrete can be flush with or not flush with the top flange of the existing foundation ring, but does not exceed the height of the top flange of the existing foundation ring, and when the poured concrete has a certain height from the top surface of the foundation ring, a layer of high-performance bearing area is arranged at the top of the poured concrete;
after the existing foundation ring is transformed, the flange plate at the bottom of the fan cylinder to be installed is widened, then the inner side of the flange plate at the bottom of the fan cylinder is fixed with the bolt rod embedded in the foundation ring through the nut, and the outer side of the flange plate is connected with the flange plate at the top of the existing foundation ring through the bolt.
2. The method for transforming the existing foundation ring type wind turbine foundation as claimed in claim 1, wherein after the original reinforced concrete inside the existing foundation ring is excavated, a plurality of stiffening plates are fixed on the inner wall of the existing foundation ring in the circumferential direction.
3. The method for improving the existing foundation ring type fan foundation according to claim 1, wherein when the bar planting is drilled, a bar planting hole is drilled in a static drilling mode, bar planting glue is injected within 2/3 of the depth of the bar planting hole, then a steel bar is inserted, and finally the bar planting glue is filled in the bar planting hole.
4. The method for transforming the existing foundation ring type wind turbine foundation as claimed in claim 1, wherein an annular groove is dug at the outer side of the outer ring beam of the existing foundation ring, an outer ring beam with an enlarged diameter is placed in the annular groove, the outer ring beam with the enlarged diameter is connected with the original outer ring beam of the foundation ring, and then the annular groove is poured.
5. The method for improving the existing foundation ring type fan foundation according to claim 1, wherein the residual soil above the original outer ring beam bottom plate of the foundation ring is removed, and then reinforcing steel bars are bound on the outer ring beam bottom plate to complete the pouring of the bottom plate stiffening beam.
6. The method for reconstructing the existing foundation ring type fan foundation of claim 1, wherein a circle of diameter-increasing bottom plates are arranged on the outer sides of the foundation bottom plates of the existing foundation ring, and a circle of hole digging foundations or rock bolt foundations are arranged below the diameter-increasing bottom plates.
7. The method for reconstructing an existing foundation ring fan foundation of claim 1, wherein steel fiber and carbon fiber materials are added into the new reinforced concrete.
8. The improved structure formed by the method for improving the foundation of the existing foundation ring type wind turbine according to any one of claims 1 to 7, which is characterized by comprising an existing foundation ring, wherein a plurality of anchor rods which are vertically arranged are arranged in the inner circumference direction of the existing foundation ring, and the length of each anchor rod is greater than the height of the existing foundation ring.
9. The retrofit structure of claim 8, wherein a pressure-bearing area is provided on top of the reinforced concrete inside the existing foundation ring, the pressure-bearing area having a top surface that is flush with a top surface of the flange on top of the existing foundation ring.
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| CN202110969492.5A CN113833008B (en) | 2021-08-23 | 2021-08-23 | Method and structure for transforming existing foundation ring type fan foundation |
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| CN202110969492.5A CN113833008B (en) | 2021-08-23 | 2021-08-23 | Method and structure for transforming existing foundation ring type fan foundation |
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| CN114592536A (en) * | 2022-03-23 | 2022-06-07 | 山东建筑大学 | Fan foundation transformation structure and construction method |
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| CN112900513A (en) * | 2021-02-18 | 2021-06-04 | 重庆大学 | High-performance wind power tower cylinder foundation reinforcing device |
| CN213448538U (en) * | 2020-08-14 | 2021-06-15 | 内蒙古金海新能源科技股份有限公司 | Anchor rod type reinforcing device for fan foundation |
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2021
- 2021-08-23 CN CN202110969492.5A patent/CN113833008B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN206396816U (en) * | 2017-01-13 | 2017-08-11 | 中国电建集团中南勘测设计研究院有限公司 | A kind of blower foundation various dimensions ruggedized construction |
| CN109024661A (en) * | 2018-09-07 | 2018-12-18 | 中国电力工程顾问集团新能源有限公司 | Foundation of wind-driven generator unit hardened system |
| CN110130424A (en) * | 2019-05-06 | 2019-08-16 | 同济大学 | Prestressed bolt blower foundation reinforcement means |
| KR102205960B1 (en) * | 2019-09-30 | 2021-01-21 | 한국건설기술연구원 | Tower connection structure of foundation structure for partial repowering of new wind turbine, and construction method for the same |
| CN212612598U (en) * | 2020-08-14 | 2021-02-26 | 天津大学 | Pile and beam splicing combined type wind power foundation structure |
| CN213448538U (en) * | 2020-08-14 | 2021-06-15 | 内蒙古金海新能源科技股份有限公司 | Anchor rod type reinforcing device for fan foundation |
| CN112064664A (en) * | 2020-09-17 | 2020-12-11 | 武大巨成结构股份有限公司 | Improved structure and improved method for fan foundation |
| CN112900513A (en) * | 2021-02-18 | 2021-06-04 | 重庆大学 | High-performance wind power tower cylinder foundation reinforcing device |
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