CN110657071B - Precast concrete fan tower barrel, tower barrel component and connecting method - Google Patents
Precast concrete fan tower barrel, tower barrel component and connecting method Download PDFInfo
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- CN110657071B CN110657071B CN201911130943.5A CN201911130943A CN110657071B CN 110657071 B CN110657071 B CN 110657071B CN 201911130943 A CN201911130943 A CN 201911130943A CN 110657071 B CN110657071 B CN 110657071B
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000011178 precast concrete Substances 0.000 title claims description 84
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 51
- 239000010959 steel Substances 0.000 claims abstract description 51
- 238000004873 anchoring Methods 0.000 claims abstract description 41
- 239000004567 concrete Substances 0.000 claims abstract description 26
- 238000010276 construction Methods 0.000 claims abstract description 12
- 239000011148 porous material Substances 0.000 claims description 51
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 10
- 239000004800 polyvinyl chloride Substances 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 8
- 239000004698 Polyethylene Substances 0.000 claims description 6
- -1 polyethylene Polymers 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 2
- 235000017491 Bambusa tulda Nutrition 0.000 claims 2
- 241001330002 Bambuseae Species 0.000 claims 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims 2
- 239000011425 bamboo Substances 0.000 claims 2
- 238000009434 installation Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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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
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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
- F03D13/10—Assembly of wind motors; Arrangements for erecting wind motors
-
- 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)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention belongs to the technical field of wind power prestress towers, and particularly relates to a prefabricated concrete fan tower barrel, a tower barrel component and a connecting method. The invention completes the connection of the prefabricated concrete fan tower through six steps of splicing and hoisting the first-stage annular tower components, splicing and hoisting the multi-stage annular tower components, installing an anchoring device, stretching the prestressed steel strands and covering the cover. The invention not only has convenient transportation, but also quickens the assembly progress of the prefabricated parts, and has simple and convenient construction method and safe structure.
Description
Technical Field
The invention belongs to the technical field of wind power prestress towers, and particularly relates to a prefabricated concrete fan tower barrel, a tower barrel component and a connecting method.
Background
With the rapid development of the wind power industry, the single-machine capacity of the wind turbine is continuously increased, and in order to effectively utilize wind energy, the fan tower is also made to be higher. The tower is used as a bearing and supporting part of the whole wind generating set, the cost of the tower is about one fourth of the cost of the whole fan, and besides ensuring the normal operation of the set under various load conditions and the safety of the set under some severe external conditions, the cost control of the tower is also important.
The commonly used towers are in the forms of truss towers, cone-shaped steel towers, concrete towers, steel-mixed towers (the upper part is of a steel plate structure, the lower part is of a concrete tower structure) and the like. Among them, concrete towers or steel-concrete towers are widely used as precast concrete towers. The prefabricated concrete tower is easy to manufacture, simple in transportation, convenient to install and small in influence on ecological environment.
The traditional whole-ring or segmented prefabricated tower barrel encounters a bottleneck period due to the limitation of road transportation, difficult reduction of construction and manufacturing cost and the like, and needs further research and improvement.
Disclosure of Invention
The invention provides a precast concrete fan tower barrel, a tower barrel component and a connecting method, and aims to provide the precast concrete fan tower barrel, the tower barrel component and the connecting method which can accelerate the assembly progress of precast components, are simple and convenient in construction method and are safe in structure.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a precast concrete fan tower barrel component comprises a plurality of single precast concrete components, wherein sections at two sides of the single precast concrete components are connected to form an annular tower barrel component; the single precast concrete member is of an arc-shaped structure with an upper end face and a lower end face which are horizontal, two lateral sections are parallel inclined planes or smooth curved surfaces, a reserved pore canal is arranged on the single precast concrete member vertically in the height direction and penetrates through the upper end face and the lower end face, and the reserved pore canal vertically penetrates through the upper end face and the lower end face.
The reserved pore canals are arranged in a plurality, and the reserved pore canals are uniformly arranged in parallel.
The number of the reserved holes is 4-36.
The reserved pore canal is circular, and the distance between the center of the reserved pore canal and the inner side wall and the outer side wall of the single precast concrete member is equal.
The diameter of the reserved pore canal is 10mm-100mm.
PE pipe or PVC pipe is pre-buried in the reserved pore canal.
A precast concrete fan tower barrel at least comprises a precast concrete fan tower barrel component, a fan tower barrel foundation, a fixing wire and an anchoring device; the prefabricated concrete fan tower barrel component is provided with multiple stages, the multiple stages of prefabricated concrete fan tower barrel components are sequentially connected to the fan tower barrel foundation from bottom to top through fixing lines, and side seams connected with lateral sections of the upper and lower stages of prefabricated concrete fan tower barrel components are mutually connected to form multiple regular spiral seam surfaces; the anchoring device is connected to the upper part of the top precast concrete fan tower barrel component; the central position of the fan tower foundation is provided with an anchoring operation pit, a self-locking type anchorage device is embedded in the anchoring operation pit, the inner diameter of the upper part of the anchoring operation pit is smaller than that of the lower part, the fan tower foundation is vertically and downwards provided with a through hole matched with a reserved pore canal along the periphery of the anchoring operation pit, and the through hole is communicated with the lower part of the anchoring operation pit.
One of the single-piece precast concrete members is provided with a manhole door opening, the manhole door opening and the reserved pore canal are not on the same vertical line, and the single-piece precast concrete member is positioned on the first-stage precast concrete fan tower barrel member and is connected with the fan tower barrel foundation.
The fixing line adopts a prestress steel strand.
A connection method of prefabricated concrete fan tower cylinders comprises the following steps of
Step one: first-stage circumferential tower barrel component splicing
Connecting and splicing sections at two sides of a plurality of single precast concrete members to form a first-stage annular tower barrel member, and penetrating the prestress steel strands into the reserved holes respectively;
step two: hoisting primary annular tower barrel component
Lifting the first-stage annular tower barrel component connected in the step one, penetrating the prestress steel strand below the annular tower barrel component into a through hole on the fan tower barrel foundation, and stretching the prestress steel strand into an anchoring operation pit in the fan tower barrel foundation, wherein a self-locking anchor is embedded in the anchoring operation pit;
step three: splicing and hoisting multi-stage circumferential tower barrel components
Connecting and splicing sections at two sides of a plurality of single-piece precast concrete members to form a secondary annular tower member, and penetrating prestressed steel strands into reserved pore canals of the single-piece precast concrete members in the secondary annular tower member respectively; lifting the secondary annular tower member, connecting the prestress steel strand on the primary annular tower member with the prestress steel strand of the secondary annular tower member through a steel bundle connector, then dropping the secondary annular tower member onto the primary annular tower member, and forming a regular spiral seam surface by a side seam of the connection of the lateral sections of the primary annular tower member and the secondary annular tower member; repeating the above processes until all the series of circumferential tower barrel components are spliced and hoisted, and completing the construction of the precast concrete tower barrel;
step four: mounting anchor device
After the third step is completed, the anchoring device is connected to the top of the annular tower barrel component at the uppermost stage;
step five: tensioning prestressed steel strand
After the fourth step is completed, stretching and anchoring the prestressed steel strand at the top of the precast concrete tower;
step six: cover
And step five, after the completion of the step, covering the joint surfaces of the precast concrete tower barrel, and completing the whole process of connecting the fan tower barrel.
The beneficial effects are that:
according to the invention, the horizontal circular seam surface and the spiral seam surface of the circumferential tower barrel component are connected through the prestress steel strands, so that the vertical tension of the tower barrel caused by the operation of the fan is greatly reduced, the overall stability of the connection of the components is ensured, and the transportation and the construction are convenient.
The foregoing description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention more clearly understood, it can be implemented according to the content of the specification, and the following detailed description of the preferred embodiments of the present invention will be given with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an elevational schematic of the present invention;
FIG. 2 is a schematic illustration of a transverse seam and a spiral seam in an embodiment of the invention;
FIG. 3 is a three-dimensional schematic of a monolithic preform in an embodiment of the invention;
FIG. 4 is a schematic illustration of a single piece preform layout in an embodiment of the present invention;
FIG. 5 is a schematic plan view of a prestressed steel strand in an embodiment of the present invention;
fig. 6 is a connection flow chart of the present invention.
In the figure: 1-prefabricating a concrete tower drum; 2-monolithic precast concrete units; 3-circumferential tower members; 4-horizontal circular seam surface; 5-spiral seam surface; 6-reserving pore canals; 7-manhole door opening; 8-PVC pipe; 9-prestress steel strand; 10-a fan tower foundation; 11-anchoring an operation pit; 12-anchoring means.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
the prefabricated concrete fan tower barrel component shown in the figures 1-3 comprises a plurality of single-piece prefabricated concrete components 2, wherein the sections of two sides of the single-piece prefabricated concrete components 2 are connected to form a circumferential tower barrel component 3; the single precast concrete member 2 is of an arc structure with an upper end face and a lower end face which are horizontal, two lateral sections 6 are parallel inclined planes or smooth curved surfaces, the single precast concrete member 2 is vertical in the height direction and penetrates through the upper end face and the lower end face to be provided with reserved pore channels 6, and the reserved pore channels 6 are vertical and penetrate through the upper end face and the lower end face.
When in actual use, the sections at two sides of the single-piece precast concrete members 2 are connected and spliced into the annular tower barrel member 3, the annular tower barrel member 3 is connected up and down to form a soil blower tower barrel, and the single-piece precast concrete members 2 are designed in actual size according to actual needs so as to be convenient for transportation and installation. The single precast concrete member 2 is vertical along the height direction and penetrates through the reserved pore canal 6 arranged on the upper end face and the lower end face, and is used for penetrating connecting wires in specific application, so that a fan tower barrel is conveniently built.
The adoption of the technical scheme of the invention is convenient for the transportation of the fan tower barrel component and the connection is convenient; because the specifications of the single precast concrete members 2 are the same, the construction cost of the fan tower drum is effectively saved.
Embodiment two:
a precast concrete fan tower according to the embodiment shown in fig. 1, 4 and 5 differs from the embodiment in that: the reserved pore canals 6 are provided with a plurality of reserved pore canals 6 which are uniformly arranged in parallel.
It is preferable that the number of the reserved holes 6 is 4-36.
When in actual use, the number of the reserved pore channels 6 is determined according to the specific requirements of the fan tower structure, and the reserved pore channels are uniformly distributed along the circumferential direction of the tower as much as possible, so that the fan tower is convenient to install and saves cost on the basis of ensuring construction safety. The reserved pore channels 6 are uniformly arranged in parallel, so that the prefabrication of the components is facilitated, the installation is facilitated, and the safety is better.
Embodiment III:
a precast concrete fan tower according to the embodiment shown in fig. 1, 4 and 5 differs from the embodiment in that: the reserved pore canal 6 is round, and the distance between the center of the reserved pore canal 6 and the inner side wall and the outer side wall of the single precast concrete member 2 is equal.
It is preferable that the diameter of the pre-prepared duct 6 is 10mm-100mm.
When in actual use, the diameter of the reserved pore channel 6 is determined according to the number and the diameter of the steel strands needed by the stress of the tower, so that the vertical direction of the concrete structure of the tower is ensured to be mainly based on the compressive stress, and the structural safety is ensured.
Embodiment four:
a precast concrete fan tower according to the embodiment shown in fig. 1, 4 and 5 differs from the embodiment in that: PE pipe or PVC pipe 8 is pre-buried in the reserved duct 6.
When in actual use, PE (polyethylene) pipes or PVC (polyvinyl chloride) pipes 8 are pre-buried in the reserved pore canal 6, so that the construction of the pre-stressed anchor cable can be guaranteed to be convenient and fast on the one hand, and the anchor cable and the tower barrel can be guaranteed not to be in direct contact on the other hand, the anchor cable is guaranteed to be stressed firstly under the action of a fan, and the structural safety of concrete is facilitated.
Fifth embodiment:
according to a precast concrete fan tower illustrated in fig. 1, at least comprising a precast concrete fan tower member, a fan tower foundation 10, a fixing wire and an anchoring device 12; the prefabricated concrete fan tower barrel component is provided with multiple stages, the multiple stages of prefabricated concrete fan tower barrel components are sequentially connected to the fan tower barrel foundation 10 from bottom to top through fixing lines, and side slots connected with lateral sections of the upper and lower stages of prefabricated concrete fan tower barrel components are mutually connected to form multiple regular spiral line slot faces 5; the anchoring device 12 is connected to the upper part of the top precast concrete fan tower barrel component; an anchoring operation pit 11 is arranged at the central position of the fan tower foundation 10, a self-locking anchor is embedded in the anchoring operation pit 11, the inner diameter of the upper portion of the anchoring operation pit 11 is smaller than that of the lower portion, a through hole matched with the reserved pore channel 6 is vertically and downwards formed in the fan tower foundation 10 along the periphery of the anchoring operation pit 11, and the through hole is communicated with the lower portion of the anchoring operation pit 11.
Preferably, the fixing wire is a prestressed steel strand 9.
In actual use, the sections at two sides of a plurality of single precast concrete members 2 are connected and spliced into a first-level annular tower barrel member 3, and prestressed steel strands 9 are respectively penetrated into the reserved pore canal 6; hoisting the connected primary annular tower member 3, penetrating the prestress steel strand 9 below the annular tower member 3 into a through hole on the fan tower foundation 10, and stretching the prestress steel strand 9 into an anchoring operation pit 11 in the fan tower foundation 10; then the sections at two sides of the single precast concrete members 2 are connected and spliced into a secondary annular tower member 3, and prestress steel strands 9 are respectively penetrated into reserved pore passages 6 of the single precast concrete members 2 in the secondary annular tower member 3; lifting the secondary annular tower member 3, connecting the prestress steel strand 9 on the primary annular tower member 3 with the prestress steel strand 9 of the secondary annular tower member 3 through a steel bundle connector, then dropping the secondary annular tower member 3 onto the primary annular tower member 3, and forming a regular spiral seam surface 5 by a side seam connecting the primary annular tower member 3 with a lateral section of the secondary annular tower member 3; repeating the above process until the splicing and hoisting of all the series of annular tower barrel components are completed; then, the anchoring device 12 is connected to the top of the circumferential tower member of the uppermost stage; stretching and anchoring the prestressed steel strand 9 at the top of the precast concrete tower 1; and (3) implementing covers on each seam surface of the precast concrete tower drum 1 to complete the whole process of connecting the fan tower drums.
The horizontal circular seam surface 4 and the spiral seam surface 5 of the circumferential tower member 3 are connected through the prestress steel strand 9, so that the vertical tension of the tower caused by the operation of a fan is greatly reduced, the overall stability of the connection of the members is ensured, and the construction is convenient.
The side seams of the lateral section connection of the single precast concrete members 2 form a regular spiral seam surface 5, and compared with the traditional vertical staggered seams, the technical scheme has the advantages that the seam surface is continuous along the height of the tower, the connection points between the rings of each layer are continuous, the stress is uniform, and the stress concentration caused by the staggered seams can not be generated.
Example six:
a precast concrete fan tower according to fig. 1 is different from the fifth embodiment in that: one of the single-piece precast concrete members 2 is provided with a manhole door opening 7, the manhole door opening 7 and the reserved pore canal 6 are not on the same vertical line, and the single-piece precast concrete member 2 is positioned on a primary precast concrete fan tower barrel member and is connected with a fan tower barrel foundation 10.
When in actual use, the technical scheme is adopted, and the fan tower can be accessed through the door opening, so that the installation and maintenance of the fan tower are more convenient. The manhole door opening 7 and the reserved pore canal 6 are not on the same vertical line, so that the stability of the invention is ensured.
Embodiment seven:
according to the method for connecting the prefabricated concrete fan tower shown in fig. 6, the method comprises the following steps of
Step one: first-stage circumferential tower barrel component splicing
Connecting and splicing sections at two sides of a plurality of single precast concrete members 2 to form a first-stage annular tower barrel member 3, and penetrating prestressed steel strands 9 into reserved pore channels 6 respectively;
step two: hoisting primary annular tower barrel component
Hoisting the first-stage annular tower member 3 connected in the first step, penetrating the prestress steel strand 9 below the annular tower member 3 into a through hole on the fan tower foundation 10, and stretching the prestress steel strand 9 into an anchoring operation pit 11 in the fan tower foundation 10, wherein a self-locking anchor is embedded in the anchoring operation pit 11;
step three: splicing and hoisting multi-stage circumferential tower barrel components
The sections of two sides of the single precast concrete members 2 are connected and spliced into a secondary annular tower barrel member 3, and prestress steel strands 9 respectively penetrate into reserved pore passages 6 of the single precast concrete members 2 in the secondary annular tower barrel member 3; lifting the secondary annular tower member 3, connecting the prestress steel strand 9 on the primary annular tower member 3 with the prestress steel strand 9 of the secondary annular tower member 3 through a steel bundle connector, then dropping the secondary annular tower member 3 onto the primary annular tower member 3, and forming a regular spiral seam surface 5 by a side seam connecting the lateral sections of the primary annular tower member 3 and the secondary annular tower member 3; repeating the above process until all the series of circumferential tower barrel components are spliced and hoisted, and completing the construction of the precast concrete tower barrel 1;
step four: mounting anchor device
After the third step is completed, the anchoring device 12 is connected to the top of the annular tower member at the uppermost stage;
step five: tensioning prestressed steel strand
After the fourth step is completed, stretching the prestressed steel strand 9 at the top of the precast concrete tower 1, and then anchoring;
step six: cover
And step five, after the completion of the step, covering the joint surfaces of the precast concrete tower cylinder 1 to complete the whole process of connecting the fan tower cylinders.
When in actual use, the prefabricated concrete fan tower constructed by the invention not only greatly reduces the vertical tension of the tower caused by the operation of the fan, but also ensures the overall stability of the connection of all the components, and is convenient to construct.
Example eight:
a connection method of precast concrete fan tower barrels is characterized in that reserved pore canals 6 are arranged in each single precast concrete member 2, each reserved pore canal 6 is uniformly distributed along the annular tower barrel member 3, the reserved pore canals 6 avoid manhole door openings 7 of the bottommost annular tower barrel member 3, and the number of the reserved pore canals 6 is 34. Each reserved pore canal 6 vertically penetrates from top to bottom along the height direction of the single precast concrete member 2, the reserved pore canal 6 is of a circular section, the circle center is located at the middle point of the thickness of the single precast concrete member 2, and the diameter of the circle is 56mm. PVC pipes 8 are pre-buried in each reserved pore canal 6, and 11 prestressed steel strands 9 with the diameter of 15.2mm are arranged in the pre-buried PVC pipes 8 in the reserved pore canal 6. The annular tower barrel components 3 at all levels are well connected, the prestressed steel strands 9 in the PVC pipe 8 are anchored after being stretched by an anchoring device 12 connected to the topmost part of the precast concrete tower barrel 1, and engineering waterproof glue is coated on each seam after all the prestressed steel strands 9 are stretched.
The anchoring means 12 in this embodiment are of prior art for securing the prestressed steel strands 9. The invention greatly reduces the vertical tension of the tower barrel caused by the operation of the fan, ensures the overall stability of the connection of all the components and is convenient for construction.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Under the condition of no conflict, the technical features related to the examples can be combined with each other according to actual situations by a person skilled in the art so as to achieve corresponding technical effects, and specific details of the combination situations are not described in detail herein.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
While the invention is susceptible of embodiments in accordance with the preferred embodiments, the invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. Any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (8)
1. A precast concrete fan ring shape tower section of thick bamboo component, its characterized in that: comprises a plurality of single precast concrete members (2), wherein the sections at two sides of the single precast concrete members (2) are connected to form a circumferential tower barrel member (3); the single-piece precast concrete member (2) is of an arc-shaped structure with horizontal upper and lower end faces and smooth curved side sections (6), the single-piece precast concrete member (2) is vertical in the height direction and penetrates through the upper and lower end faces, and reserved pore channels (6) are arranged vertically and penetrate through the upper and lower end faces;
when in splicing, the reserved pore passages (6) communicated with the upper and lower adjacent single precast concrete members (2) are connected through prestressed steel strands (9);
the side seams of the lateral section connection of the single precast concrete members (2) form a regular spiral seam surface (5);
the number of the reserved pore passages (6) is multiple, and the reserved pore passages (6) are uniformly arranged in parallel;
the number of the reserved holes (6) is 4-36.
2. A precast concrete fan annular tower member according to any one of claims 1, wherein: the reserved pore canal (6) is round, and the distance between the center of the reserved pore canal (6) and the inner side wall and the outer side wall of the single-piece precast concrete member (2) is equal.
3. A precast concrete fan annular tower member according to any one of claim 2, wherein: the diameter of the reserved pore canal (6) is 10mm-100mm.
4. A precast concrete fan annular tower member according to any one of claims 1, wherein: PE (polyethylene) pipes or PVC (polyvinyl chloride) pipes (8) are embedded in the reserved pore canal (6).
5. A precast concrete fan tower section of thick bamboo, its characterized in that: comprising at least a precast concrete fan annular tower member according to any one of claims 1-4, a fan tower foundation (10), a fixing wire and an anchoring device (12); the prefabricated concrete fan tower barrel component is provided with multiple stages, the multiple stages of prefabricated concrete fan tower barrel components are sequentially connected to a fan tower barrel foundation (10) from bottom to top through fixing lines, and side seams connected with lateral sections of the upper and lower stages of prefabricated concrete fan tower barrel components are mutually connected to form multiple regular spiral seam surfaces (5); the anchoring device (12) is connected to the upper part of the top precast concrete fan tower barrel component; an anchoring operation pit (11) is arranged at the central position of the fan tower foundation (10), a self-locking anchor is embedded in the anchoring operation pit (11), the inner diameter of the upper portion of the anchoring operation pit (11) is smaller than that of the lower portion, a through hole matched with the reserved pore channel (6) is vertically and downwards formed in the periphery of the anchoring operation pit (11) in the fan tower foundation (10), and the through hole is communicated with the lower portion of the anchoring operation pit (11).
6. A precast concrete fan tower as recited in claim 5, wherein: one of the single-piece precast concrete members (2) is provided with a manhole door opening (7), the manhole door opening (7) and the reserved pore canal (6) are not on the same vertical line, and the single-piece precast concrete member (2) is positioned on a primary precast concrete fan tower barrel member and is connected with a fan tower barrel foundation (10).
7. A precast concrete fan tower as recited in claim 5, wherein: the fixing line adopts a prestress steel strand (9).
8. A method of connecting a precast concrete fan tower according to any one of claims 5 to 7, comprising the steps of
Step one: first-stage circumferential tower barrel component splicing
Connecting and splicing sections at two sides of a plurality of single precast concrete members (2) to form a first-stage annular tower barrel member (3), and penetrating prestressed steel strands (9) into reserved pore channels (6) respectively;
step two: hoisting primary annular tower barrel component
Lifting the first-stage annular tower barrel component (3) connected in the first step, penetrating a prestress steel strand (9) below the annular tower barrel component (3) into a through hole on a fan tower barrel foundation (10), and stretching the prestress steel strand (9) into an anchoring operation pit (11) in the fan tower barrel foundation (10), wherein a self-locking anchor is embedded in the anchoring operation pit (11);
step three: splicing and hoisting multi-stage circumferential tower barrel components
The sections at two sides of the single precast concrete members (2) are connected and spliced into a secondary annular tower barrel member (3), and prestress steel strands (9) are respectively penetrated into reserved pore passages (6) of the single precast concrete members (2) in the secondary annular tower barrel member (3); lifting the secondary annular tower member (3), connecting the prestress steel strand (9) on the primary annular tower member (3) with the prestress steel strand (9) of the secondary annular tower member (3) through a steel bundle connector, then dropping the secondary annular tower member (3) onto the primary annular tower member (3), and forming a regular spiral line seam surface (5) by a side seam connected with the lateral section of the primary annular tower member (3) and the lateral section of the secondary annular tower member (3); repeating the above process until all the series of circumferential tower barrel components are spliced and hoisted, and completing the construction of the precast concrete tower barrel (1);
step four: mounting anchor device
After the step three is completed, connecting an anchoring device (12) to the top of the annular tower member at the uppermost stage;
step five: tensioning prestressed steel strand
After the step four is completed, stretching and anchoring the prestressed steel strand (9) at the top of the precast concrete tower barrel (1);
step six: cover
And step five, after the completion of the step, covering the joint surfaces of the precast concrete tower cylinder (1) to complete the whole process of connecting the fan tower cylinder.
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| CN112796517A (en) * | 2021-01-04 | 2021-05-14 | 中国电建集团华东勘测设计研究院有限公司 | Pre-buried reinforcing steel plate structure in segmentation precast concrete tower section of thick bamboo door opening |
| CN115419102A (en) * | 2022-09-29 | 2022-12-02 | 上海风领新能源有限公司 | Bearing platform foundation and wind power tower cylinder |
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