CN113417807A - Wind turbine generator system concrete tower section of thick bamboo prestressing force steel strand end protection device - Google Patents
Wind turbine generator system concrete tower section of thick bamboo prestressing force steel strand end protection device Download PDFInfo
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- CN113417807A CN113417807A CN202110777713.9A CN202110777713A CN113417807A CN 113417807 A CN113417807 A CN 113417807A CN 202110777713 A CN202110777713 A CN 202110777713A CN 113417807 A CN113417807 A CN 113417807A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 127
- 239000010959 steel Substances 0.000 title claims abstract description 127
- 239000004567 concrete Substances 0.000 title claims abstract description 75
- 235000017166 Bambusa arundinacea Nutrition 0.000 title abstract description 9
- 235000017491 Bambusa tulda Nutrition 0.000 title abstract description 9
- 241001330002 Bambuseae Species 0.000 title abstract description 9
- 235000015334 Phyllostachys viridis Nutrition 0.000 title abstract description 9
- 239000011425 bamboo Substances 0.000 title abstract description 9
- 230000005489 elastic deformation Effects 0.000 claims abstract description 7
- 230000007246 mechanism Effects 0.000 claims abstract description 3
- 230000000670 limiting effect Effects 0.000 claims description 22
- 230000001681 protective effect Effects 0.000 description 11
- 230000002829 reductive effect Effects 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 6
- 238000000926 separation method Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000011513 prestressed concrete Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000002028 premature Effects 0.000 description 3
- 238000010923 batch production Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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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
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
-
- 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)
Abstract
The invention discloses a wind turbine generator concrete tower cylinder prestress steel strand end part protection device, wherein each concrete tower cylinder is longitudinally overlapped and arranged, and the prestress steel strand longitudinally penetrates through each concrete tower cylinder to complete connection and fixation of each concrete tower cylinder, the protection device is arranged at the top end of each concrete tower cylinder, the prestress steel strand penetrates through the protection device, the end part of the steel strand is connected with the top end of the protection device, and an elastic telescopic mechanism is arranged between the top end and the bottom end of the protection device. Through protection device's elastic deformation, reduce the deflection of steel strand wires, delay the increase of prestressing force, the protection tower section of thick bamboo can not increase too fast and too early conquassation because of the prestressing force, has promoted the whole security of a tower section of thick bamboo.
Description
Technical Field
The invention belongs to the technical field of wind power generation, and particularly relates to a wind turbine generator concrete tower cylinder prestress steel strand end protection device.
Background
Environmental pollution and resource shortage are global problems to be solved urgently all the time, and wind power energy is paid more and more attention as clean energy. In order to obtain stable generating capacity, the wind turbine generator is erected in the air through a supporting structure. In recent years, the single-machine capacity, the hub height and the wind wheel diameter of the wind power structure are gradually improved, and the traditional conical steel tower supporting structure is limited in bearing capacity and is more and more difficult to meet the trend of large-scale development of the wind power structure.
The manufacturing cost of each cubic of concrete is less than one tenth of that of each ton of steel, the introduction of the concrete reduces the steel consumption of the supporting structure, and the application limitation of the wind power structure caused by the problems of cost and the like is favorably broken through. In order to reduce the transportation size and the hoisting weight, the concrete tower drum generally needs to be prefabricated in a segmented mode in a factory and integrally assembled on the spot. During on-site assembly, prestressed steel strands are generally used to connect the segments and provide the main anti-overturning moment for the concrete tower barrel.
However, when the tower is subjected to extreme external loads, the anti-overturning moment provided by the prestressed steel strands is not enough to resist the separation between the concrete tower barrel sections, and at the moment, the prestressed reinforcement steel strands are elongated along with the increase of the separation degree of the joints between the sections, and the prestress is increased. If the prestress is increased too fast, the compressive lateral pressure stress of the section of the concrete tower barrel is increased rapidly, and the tower barrel is crushed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a wind turbine concrete tower cylinder prestress steel strand end protection device.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a wind turbine generator system concrete tower section of thick bamboo prestressing force steel strand wires tip protection device, the vertical coincide setting of each concrete tower section of thick bamboo, and prestressing steel strand wires vertically run through in each concrete tower section of thick bamboo, accomplish the connection of each concrete tower section of thick bamboo fixed, protection device sets up in the top of concrete tower section of thick bamboo, prestressing steel strand wires run through in protection device, just the tip of steel strand wires with protection device's top is connected fixedly, just set up elastic telescoping mechanism between protection device's top and the bottom.
According to a preferred embodiment, the protection device comprises: the concrete tower comprises a first limiting part, a second limiting part, elastic gaskets and an anchorage device, wherein the first limiting part is arranged above the second limiting part, the second limiting part is arranged at the top end of a concrete tower barrel, a plurality of elastic gaskets are arranged between the first limiting part and the second limiting part, and the prestressed steel strand runs through the second limiting part, the elastic gaskets and the first limiting part and is rigidly connected with the anchorage device arranged at the top of the first limiting part.
According to a preferred embodiment, a backing plate is arranged between the second retaining element and the concrete tower tube.
According to a preferred embodiment, the surface area of the backing plate is larger than the area of the bottom surface of the second stopper.
According to a preferred embodiment, the elastic washer is a disc washer.
According to a preferred embodiment, the first limiting part is an upper connecting steel sleeve, the second limiting part is a lower connecting steel sleeve, the upper connecting steel sleeve and the lower connecting steel sleeve are groove body structures provided with openings, and the groove body openings of the upper connecting steel sleeve and the lower connecting steel sleeve are oppositely arranged; the elastic gasket is stacked between the groove body structures of the upper connecting steel sleeve and the lower connecting steel sleeve.
According to a preferred embodiment, a gap is provided between the upper and lower connecting steel sleeves, and the distance of the gap is equal to a preset maximum elastic deformation D of an elastic washer provided between the upper and lower connecting steel sleeves.
According to a preferred embodiment, the preset maximum elastic deformation D is:
wherein j represents the number of stages of the concrete tower tube, Δ LiAnd Δ DLiThe deformation of the steel strand corresponding to each section of the concrete tower barrel is respectively the deformation of the steel strand corresponding to each section of the concrete tower barrel when the protection device is not arranged and the protection device is arranged under the condition of the same external load.
According to a preferred embodiment, the first retaining member, the second retaining member and the elastic washer are centrally provided with a through hole structure for passing through the prestressed steel strand.
The main scheme and the further selection schemes can be freely combined to form a plurality of schemes which are all adopted and claimed by the invention; in the invention, the selection (each non-conflict selection) and other selections can be freely combined. The skilled person in the art can understand that there are many combinations, which are all the technical solutions to be protected by the present invention, according to the prior art and the common general knowledge after understanding the scheme of the present invention, and the technical solutions are not exhaustive herein.
The invention has the beneficial effects that:
(1) the invention can effectively enhance the deformability of the concrete tower. After the traditional prestressed concrete tower barrel is subjected to extreme external load, seams between tower barrel segments are separated due to tensile stress, and prestressed steel strands are continuously elongated along with the increase of the separation degree. The elongation of the prestressed steel strands plays a role in inhibiting the separation of the joint, so that the second rigidity of the deformation of the tower barrel is reduced, but the reduction effect is not obvious. According to the invention, the plurality of disc-shaped gaskets are connected in series at the end parts of the prestressed steel strands, and when the prestressed steel strands are elongated, the plurality of disc-shaped gaskets are pressed to deform, so that the second rigidity of deformation of the tower barrel is further reduced, and the deformation capacity of the tower barrel is enhanced.
(2) The invention can effectively avoid the early crushing of the concrete tower tube. As described above, after the joints between the segments are separated, the prestress of the conventional prestressed concrete tower tube is continuously increased along with the elongation of the prestressed steel strands, and the area of the stressed area of the section of the concrete tower tube is continuously reduced along with the separation of the joints, so that the compressive stress on the stressed side of the section of the concrete tower tube is rapidly increased and the concrete is crushed. The invention shares the deformation of partial prestressed steel strands by utilizing the compressive deformation of the plurality of disc-shaped gaskets, reduces the elongation of the prestressed steel strands and reduces the increment of prestress, thereby effectively slowing down the increase of compressive stress on the compressive side of the section of the concrete tower barrel and avoiding premature collapse of the concrete tower barrel.
(3) The invention can effectively avoid the fracture of the prestressed steel strand. As described above, after the joints between the segments are released in the conventional prestressed concrete tower tube, the prestress is continuously increased along with the elongation of the prestressed steel strands. If the initial tension prestress is large, the prestressed steel strand is easy to enter a plastic state after being excessively elongated and even to break. The invention shares the deformation of part of the prestressed steel strands by utilizing the compression deformation of the plurality of disc-shaped gaskets, reduces the elongation of the prestressed steel strands and reduces the increment of the prestress, thereby preventing the fracture of the prestressed steel strands.
(4) The invention has convenient manufacture and simple field installation, and is suitable for industrial production and manufacture. Different from other reinforcing methods of the prestressed concrete tower tube, all the components of the invention do not relate to a more complex processing technology and construction technology, and can be directly assembled at the end part of the prestressed steel strand, thereby being convenient for batch production, manufacture and installation, effectively reducing the production cost and the construction time and having good economic benefit.
Drawings
FIG. 1 is a schematic perspective view of a protective device according to the present invention;
FIG. 2 is a front view of the protective device of the present invention;
FIG. 3 is a cross-sectional view of the protective device of the present invention prior to deformation;
FIG. 4 is a cross-sectional view of the present invention after deformation of the protective device;
FIG. 5 is a schematic view of the construction of the protective device of the present invention connected to a concrete tower before deformation;
FIG. 6 is a schematic view of a construction of the present invention in which the protective device is deformed and then attached to a concrete tower;
FIG. 7 is a graph comparing the deformability of a tower with and without the protective device of the present invention;
FIG. 8 is a schematic view of the connection structure of the protection device of the present invention and a concrete tower when the tower is not under an external load;
FIG. 9 is a schematic view of a deformed configuration of the protection device of the present invention and a concrete tower drum under an external load;
FIG. 10 is a schematic view of a concrete tower drum deformed under an external load applied to the tower drum without the protective device of the present invention;
the concrete tower comprises a disc-shaped gasket 1, an upper connecting steel sleeve 2, a lower connecting steel sleeve 3, steel strand round holes 21, prestressed steel strands 4, an anchor 5, a base plate 6, a steel sleeve interval D and a concrete tower barrel 7.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that, in order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments.
Thus, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations and positional relationships that are conventionally used in the products of the present invention, and are used merely for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, it should be noted that, in the present invention, if the specific structures, connection relationships, position relationships, power source relationships, and the like are not written in particular, the structures, connection relationships, position relationships, power source relationships, and the like related to the present invention can be known by those skilled in the art without creative work on the basis of the prior art.
Example 1:
referring to fig. 1 to 7, the invention discloses a wind turbine concrete tower cylinder prestress steel strand end protection device.
The protection device comprises an upper connecting steel sleeve 2 and a lower connecting steel sleeve 3 which are oppositely arranged, a plurality of disc-shaped gaskets 1 arranged in the steel sleeves, an anchorage device 5 for fixing the upper connecting steel sleeve 2, the lower connecting steel sleeve 3, the disc-shaped gaskets 1 and a prestressed steel strand 4 at the top of a tower barrel and a base plate 6.
In this embodiment, go up to connect steel sleeve 2 and connect steel sleeve 3 down and be one side opening, one side is the hollow opening drum component of the end plate that has round hole 21, goes up to connect steel sleeve 2 and connect steel sleeve 3 opening side to place and the opening side is inwards oppositely, and two connect steel sleeve opening side edges and leave a determining deviation D, guarantee its non-contact, during prestressing steel strand wires 4 passed round hole 21 and inserted connection steel sleeve 2 and connect steel sleeve 3 down in proper order.
A plurality of disc washers 1 are sequentially stacked in the empty grooves of the upper connecting steel sleeve 2 and the lower connecting steel sleeve 3 and are nested on the prestressed steel strands 4. The belleville washers 1 may be any number of multiple in series to vary the protective capacity of the device of the invention.
The size of the distance D between the upper connecting steel sleeve 2 and the lower connecting steel sleeve 3 is equal to the maximum elastic deformation design value of the disc-shaped gaskets 1 connected in series in the upper connecting steel sleeve 2 and the lower connecting steel sleeve 3, and the protection capability of the device can be changed by changing the size of the distance D (meanwhile, the number of the disc-shaped gaskets 1 is correspondingly increased or reduced).
Refer to fig. 8, 9 and 10. Fig. 8 is a schematic view of the connection of the protection device of the present invention to a concrete tower when the tower is not under an external load, wherein the protection device of the present invention is not compressed. FIG. 9 is a schematic view of a deformed configuration of the protection device of the present invention and a concrete tower drum under an external load; at the moment, the protection device of the invention generates compression deformation, and the steel strand generates deformation. Fig. 10 is a schematic diagram of a concrete tower tube deformation structure under an external load on a tower tube without a protective device of the invention, wherein steel strands are deformed. The preset maximum elastic deformation D is as follows:
where j denotes the number of stages of the concrete column, and j is 3 in this embodiment. Δ LiAnd Δ DLiThe deformation of the steel strand corresponding to each section of the concrete tower barrel is respectively the deformation of the steel strand corresponding to each section of the concrete tower barrel when the protection device is not arranged and the protection device is arranged under the condition of the same external load. That is, by arranging the device of the invention, the steel strand 4 can bear the same external force or external load in the horizontal directionHas greater deformability and is less likely to be snapped apart.
The device is nested on a prestressed steel strand 4 and is fixed on a concrete tower barrel 7 through an anchorage device 5 and a backing plate 6, wherein the anchorage device 5 is anchored at the top of an upper connecting steel sleeve 2, and the backing plate is placed between a lower connecting steel sleeve 3 and the concrete tower barrel 7.
The device can effectively enhance the deformability of the concrete tower drum and effectively avoid premature collapse of the concrete tower drum and fracture of the prestressed steel strands.
Specifically, the plurality of disc-shaped gaskets 1 are connected in series to the end parts of the prestressed steel strands 4, and when the prestressed steel strands 4 are elongated, the plurality of disc-shaped gaskets 1 are pressed and deformed with each other, so that the second rigidity of deformation of the concrete tower barrel 7 is effectively reduced, and the deformation capacity of the concrete tower barrel 7 is enhanced. Furthermore, the deformation of partial prestressed steel strands 4 is shared by the compressive deformation of the disc-shaped gasket 1, so that the elongation of the prestressed steel strands 4 is reduced, and the increment of prestress is reduced, thereby preventing the prestressed steel strands 4 from being broken, effectively slowing down the increase of compressive stress on the stressed side of the cross section of the concrete tower barrel 7, and avoiding the premature collapse of the concrete tower barrel 7.
Specifically, the protection capability of the device is determined by the number of disc washers 1 and the opening side distance D between the upper connecting steel sleeve 2 and the lower connecting steel sleeve 3. Referring to fig. 5 and 6, when the concrete tower tube 7 deforms, the disc-shaped washers 1 are pressed against each other and deform, the distance D between the upper connection steel sleeve 2 and the lower connection steel sleeve 3 gradually decreases, when the concrete tower tube 7 deforms, so that the opening sides of the upper connection steel sleeve 2 and the lower connection steel sleeve 3 of the device of the invention are in contact (i.e., when D is 0), the protection capability of the device of the invention is exerted to the utmost, and the second rigidity of the tower tube is restored to the rigidity when the device of the invention is not provided. Therefore, the more the disc washers 1 are connected in series, the larger the distance D between the upper connecting steel sleeve 2 and the lower connecting steel sleeve 3 is, the larger the extrusion deformation of the device can be, the larger the second rigidity degree of the tower can be reduced, and the stronger the protection capability is.
FIG. 7 is a graph comparing the deformability of a tower with and without the protective device of the present invention. That is, by arranging the device of the present invention, the steel strand 4 can have a greater deformation capability under the condition that the tower barrel bears the same horizontal external force or external load, and accordingly, the tower barrel also has a greater deformation capability. Namely, the plurality of disc-shaped gaskets are connected in series at the end parts of the prestressed steel strands, and when the prestressed steel strands are elongated, the plurality of disc-shaped gaskets are pressed to deform, so that the second rigidity of deformation of the tower barrel is further reduced, and the deformation capacity of the tower barrel is enhanced.
In addition, all components of the device do not relate to a complex machining process and a complex construction process, and can be directly assembled at the end part of the prestressed steel strand during specific implementation, so that the device is convenient for batch production, manufacture and installation, thereby effectively reducing the production cost and the construction time, having good economic benefits and being beneficial to popularization.
The foregoing basic embodiments of the invention and their various further alternatives can be freely combined to form multiple embodiments, all of which are contemplated and claimed herein. In the scheme of the invention, each selection example can be combined with any other basic example and selection example at will. Numerous combinations will be known to those skilled in the art.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A wind turbine concrete tower cylinder prestress steel strand end protection device is characterized in that each section of concrete tower cylinder (7) is longitudinally overlapped, and prestress steel strands (4) longitudinally penetrate through each section of concrete tower cylinder (7) to complete the connection and fixation of each section of concrete tower cylinder (7),
the protection device is arranged on the top end of the concrete tower barrel (7), the prestressed steel strands (4) penetrate through the protection device, the end portions of the steel strands (4) are fixedly connected with the top end of the protection device, and the elastic telescopic mechanism is arranged between the top end of the protection device and the bottom end of the protection device.
2. The wind turbine concrete tower prestressed steel strand end protection device of claim 1, wherein said protection device comprises: a first limit piece, a second limit piece, an elastic washer and an anchorage device (5),
the first limiting piece is arranged above the second limiting piece, the second limiting piece is arranged at the top end of the concrete tower barrel (7), a plurality of elastic washers are arranged between the first limiting piece and the second limiting piece,
the prestress steel strand (4) runs through the second limiting part, the elastic washer and the first limiting part and is rigidly connected with an anchorage device (5) arranged at the top of the first limiting part.
3. The wind turbine concrete tower prestressed steel strand end protection device of claim 2, characterized in that a backing plate (6) is provided between said second retaining member and said concrete tower (7).
4. The wind turbine concrete tower prestressed steel strand end protection device of claim 3, wherein the surface area of said backing plate (6) is greater than the area of the bottom surface of the second retaining member.
5. The wind turbine concrete tower pre-stressed steel strand end protection device of claim 2, wherein the elastic washer is a disc washer 1.
6. The wind turbine concrete tower prestressed steel strand end protection device of claim 2, wherein said first stop member is an upper connecting steel sleeve (2), said second stop member is a lower connecting steel sleeve (3),
the upper connecting steel sleeve (2) and the lower connecting steel sleeve (3) are groove body structures provided with openings, and the groove body openings of the upper connecting steel sleeve (2) and the lower connecting steel sleeve (3) are oppositely arranged;
the elastic gasket is stacked between groove body structures of the upper connecting steel sleeve (2) and the lower connecting steel sleeve (3).
7. The wind turbine concrete tower prestressed steel strand end protection device according to claim 6, characterized in that a gap is provided between the upper connection steel sleeve (2) and the lower connection steel sleeve (3), and the distance of the gap is equal to a preset maximum elastic deformation D of an elastic washer provided between the upper connection steel sleeve (2) and the lower connection steel sleeve (3).
8. The wind turbine concrete tower pre-stressed steel strand end protection device of claim 7, wherein the preset maximum elastic deformation D is:
wherein j represents the number of stages of the concrete tower tube, Δ LiAnd Δ DLiThe deformation of the steel strand (4) corresponding to each section of the concrete tower cylinder is respectively the deformation of the steel strand corresponding to each section of the concrete tower cylinder when the protection device is not arranged and the protection device is arranged under the condition of the same external load.
9. The wind turbine concrete tower pre-stressed steel strand end protection device of claim 2, wherein the first retaining member, the second retaining member, and the elastic washer are centrally provided with a through hole structure for passing through the pre-stressed steel strand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110777713.9A CN113417807A (en) | 2021-07-07 | 2021-07-07 | Wind turbine generator system concrete tower section of thick bamboo prestressing force steel strand end protection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110777713.9A CN113417807A (en) | 2021-07-07 | 2021-07-07 | Wind turbine generator system concrete tower section of thick bamboo prestressing force steel strand end protection device |
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| CN113417807A true CN113417807A (en) | 2021-09-21 |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3526941A (en) * | 1967-09-19 | 1970-09-08 | Antonio Brandestini | Method of fastening anchoring means to a tensioning wire |
| US5600927A (en) * | 1995-06-14 | 1997-02-11 | Kennon; Add T. | Strapped rebar end protector |
| JP2005036428A (en) * | 2003-07-16 | 2005-02-10 | Ohbayashi Corp | Structure and method of reinforcing concrete |
| US20110000155A1 (en) * | 2009-07-02 | 2011-01-06 | Frank Wellershoff | Cable End Anchorage With Overload Protection |
| CN205677339U (en) * | 2016-06-19 | 2016-11-09 | 中国二十二冶集团有限公司 | The excessive backing plate in prestressed concrete tower cylinder top and steel tower tube attachment structure |
| CN206468489U (en) * | 2016-11-18 | 2017-09-05 | 江苏金海新能源科技有限公司 | A kind of prestressed concrete tower bolt and steel strand wires connection transfer device |
| CN109853853A (en) * | 2019-02-15 | 2019-06-07 | 广东庆余堂建筑科技有限公司 | A kind of prestress wire anchor |
| CN110042767A (en) * | 2019-05-30 | 2019-07-23 | 广西路桥工程集团有限公司 | A kind of fixing cable anchoring method of CABLEWAY ERECTION SYSTEM |
| CN110259643A (en) * | 2019-06-25 | 2019-09-20 | 中国电建集团华东勘测设计研究院有限公司 | A kind of novel pre-stressed steel reinforced concrete pylon changeover portion conversion equipment |
| CN210976338U (en) * | 2019-08-14 | 2020-07-10 | 兰州恒驰预应力科技有限公司 | Secondary tension low-retraction prestressed anchorage |
| CN112211349A (en) * | 2020-09-10 | 2021-01-12 | 湖南联智智能科技有限公司 | Steel strand anti-slip wire tool for pre-tensioning construction |
| CN215408998U (en) * | 2021-07-07 | 2022-01-04 | 重庆大学 | Wind turbine generator system concrete tower section of thick bamboo prestressing force steel strand end protection device |
-
2021
- 2021-07-07 CN CN202110777713.9A patent/CN113417807A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3526941A (en) * | 1967-09-19 | 1970-09-08 | Antonio Brandestini | Method of fastening anchoring means to a tensioning wire |
| US5600927A (en) * | 1995-06-14 | 1997-02-11 | Kennon; Add T. | Strapped rebar end protector |
| JP2005036428A (en) * | 2003-07-16 | 2005-02-10 | Ohbayashi Corp | Structure and method of reinforcing concrete |
| US20110000155A1 (en) * | 2009-07-02 | 2011-01-06 | Frank Wellershoff | Cable End Anchorage With Overload Protection |
| CN205677339U (en) * | 2016-06-19 | 2016-11-09 | 中国二十二冶集团有限公司 | The excessive backing plate in prestressed concrete tower cylinder top and steel tower tube attachment structure |
| CN206468489U (en) * | 2016-11-18 | 2017-09-05 | 江苏金海新能源科技有限公司 | A kind of prestressed concrete tower bolt and steel strand wires connection transfer device |
| CN109853853A (en) * | 2019-02-15 | 2019-06-07 | 广东庆余堂建筑科技有限公司 | A kind of prestress wire anchor |
| CN110042767A (en) * | 2019-05-30 | 2019-07-23 | 广西路桥工程集团有限公司 | A kind of fixing cable anchoring method of CABLEWAY ERECTION SYSTEM |
| CN110259643A (en) * | 2019-06-25 | 2019-09-20 | 中国电建集团华东勘测设计研究院有限公司 | A kind of novel pre-stressed steel reinforced concrete pylon changeover portion conversion equipment |
| CN210976338U (en) * | 2019-08-14 | 2020-07-10 | 兰州恒驰预应力科技有限公司 | Secondary tension low-retraction prestressed anchorage |
| CN112211349A (en) * | 2020-09-10 | 2021-01-12 | 湖南联智智能科技有限公司 | Steel strand anti-slip wire tool for pre-tensioning construction |
| CN215408998U (en) * | 2021-07-07 | 2022-01-04 | 重庆大学 | Wind turbine generator system concrete tower section of thick bamboo prestressing force steel strand end protection device |
Non-Patent Citations (2)
| Title |
|---|
| 王先铁;刘立达;周绪红;贺博;郑江;: "新型自复位方钢管混凝土框架的抗侧刚度研究", 西安建筑科技大学学报(自然科学版), no. 06, 28 December 2016 (2016-12-28) * |
| 王鹏;张力;王福敏;张赞鹏;: "钢绞线腐蚀时变效应对预应力混凝土梁桥影响研究", 公路交通技术, no. 01, 25 February 2015 (2015-02-25) * |
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