CN113833008A - 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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- CN113833008A CN113833008A CN202110969492.5A CN202110969492A CN113833008A CN 113833008 A CN113833008 A CN 113833008A CN 202110969492 A CN202110969492 A CN 202110969492A CN 113833008 A CN113833008 A CN 113833008A
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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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- General Life Sciences & Earth Sciences (AREA)
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- Mechanical Engineering (AREA)
- Foundations (AREA)
Abstract
The invention relates to a method and a structure for modifying 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 rods in the circumferential direction of the inner part of the excavated existing foundation ring, wherein the height of each anchor 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 achievement 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 for planting ribs;
embedding a plurality of anchor rods in the circumferential direction of the inner part of the excavated existing foundation ring, wherein the height of each anchor 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 height of the poured new reinforced concrete and lower than the original reinforced concrete and 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 drilling the bar planting, adopt quiet power drilling mode to bore the bar planting hole, inject the bar planting glue in the 2/3 within range of the bar planting hole degree of depth, then insert the reinforcing bar, fill the bar planting glue in the bar planting hole at last.
Furthermore, an annular groove is dug in the outer side of the outer ring beam of the existing foundation ring, an expanded diameter outer ring beam is placed in the annular groove, the expanded diameter 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 of the structure of the existing foundation, the whole 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 rods, implanting steel bars at the bottom and newly-injected reinforced concrete, and the length of the anchor rods 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 rods embedded in the original foundation ring, the outer part of the flange plate is connected with the flange plate on the original foundation ring through bolts, thus the problem that the fan cylinder is connected with the existing foundation ring after being replaced is solved, and the connection mode can utilize the original foundation ring to be connected, and then compound crab-bolt connected mode can improve the joint strength of changing back fan section of thick bamboo and basis, and the specially adapted is the condition that the low-power fan is changed for 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 base 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 inside the existing foundation ring 1, the reinforced concrete in the area is excavated, the original concrete in the foundation ring is excavated, and then bar planting operation is performed, wherein the bar planting operation needs to drill the inside of the foundation ring in advance and then perform 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 ensured to be not less than 15 times of the diameter of a steel bar, and meanwhile, the bar planting hole needs to be drilled by static force, so that a hand chisel is not needed.
The hole wall should have certain roughness in the bar planting hole, should not smooth, need clear the hole after having bored the bar planting hole simultaneously, clear the hole and adopt scrubbing brush or stereoplasm nylon brush to clean the pore wall, and the downthehole compressed air that will use of bar planting will be faint to blow clean and use water to wash clean simultaneously, and the steel wire brush is clean for the male part that will need bar planting 7 at last again, then slowly rotates in the male 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 2/3 range 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 arranged in the circumferential direction of the inner wall 12 of the existing foundation ring, wherein the number and the size of the foundation ring stiffening plates 13 need to be determined by calculation, and the 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 poured 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 bolts are buried, scraps in the foundation ring are removed, before new reinforced concrete is prepared to be poured, the contact part of the new concrete and the old concrete is cleaned by water, then the 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 member and the old member.
The height of the poured concrete can be flush with or not flush with the flange plate 11 at the top of the existing foundation ring, but does not exceed the height of the flange plate 11 at the top of the existing foundation ring, when the poured concrete has a certain height 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, the outer side of the existing foundation ring outer ring beam 2 is provided with a groove and a hole to form an outer ring groove, 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 overall 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 reinforcing steel bars are bound and templates are supported, the casting operation of expanding the diameter of the outer ring beam 8 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.
What need explain just makes, when digging hole basis 20 is not convenient for construct, can adopt the rock stock basis to replace, can set up every circle quantity, diameter and the number of turns that demonstrate the stock basis according to actual need, when electing with the rock stock basis, this rock stock basis also is along the peripheral even revises of former basic outer loop, can lay many circles, and anchor bar top anchor is in increasing on the warp bottom plate, also can improve the ability that the basis resisted the moment of flexure.
Referring to fig. 2 and 3, an embodiment of the present invention further provides a modified structure of an existing foundation ring type wind turbine foundation, 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 the length of each anchor rod is greater than the 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 current basic ring type fan basis that this embodiment provided reforms transform the structure and has solved a fan section of thick bamboo and change the back and be connected with the difficult problem of basis. 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, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
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 present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (10)
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;
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.
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 reconstructing an existing foundation ring type wind turbine foundation of claim 1, wherein when the height of the poured new reinforced concrete is higher than the height of the original reinforced concrete and lower than the top surface of the foundation ring, a layer of pressure bearing area is arranged on the top of the new reinforced concrete in the circumferential direction.
4. 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.
5. 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.
6. The method for transforming the existing foundation ring type fan foundation according to claim 1, wherein the pouring of the bottom plate stiffening beam is completed by removing the residue soil above the bottom plate of the original outer ring beam of the foundation ring and then binding the reinforcing steel bars on the bottom plate of the outer ring beam.
7. The method for reconstructing the existing foundation ring type fan foundation according to claim 1, wherein 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.
8. 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.
9. The improved structure formed by the method for improving the existing foundation ring type fan foundation according to any one of claims 1 to 8, which is characterized by comprising an existing foundation ring, wherein a plurality of vertically-arranged anchor rods are arranged in the circumferential direction in the existing foundation ring, and the length of each anchor rod is greater than the height of the existing foundation ring.
10. The retrofit structure of claim 9, 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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| Application Number | Priority Date | Filing Date | Title |
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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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| CN113833008A true CN113833008A (en) | 2021-12-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| 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 |
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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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| CN113833008B (en) | 2023-01-10 |
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