CN218151249U - Circular cross section assembled self-lifting wind power tower cylinder - Google Patents

Abstract

The utility model provides a circular cross section assembled is from promoting wind power tower cylinder, including tower cylinder basis, tower cylinder body and wind turbine generator system, tower cylinder body includes concrete section and steel section, the steel section links to each other with the top of concrete section, the concrete section includes first concrete section and second concrete section, first concrete section includes a plurality of first concrete segments and the first bracket festival section that is located the bottom, the second concrete section includes a plurality of second concrete segments and the second bracket festival section that is located the top, first concrete section and second concrete section adopt the assembled technique to build respectively, and adopt between first concrete section and the second concrete section from promoting the technique equipment, first bracket festival section links to each other with the second bracket festival section. The utility model discloses a wind power tower section of thick bamboo adopts assembled structure and from the scheme that the lifting technology combined together, solves the tradition and promotes the precision control and the quality control difficult problem that cast-in-place tube structure exists certainly, solves the limitation of traditional assembled tower section of thick bamboo face to super high height.

Description

Circular cross section assembled self-lifting wind power tower cylinder

Technical Field

The utility model belongs to the technical field of wind power generation technique and specifically relates to a circular cross section assembled is from promoting wind power tower cylinder.

Background

With the rapid promotion of development and utilization of renewable energy sources such as wind energy and the like, ultrahigh-height wind power tower drum products are developed in the middle-east low wind speed region to obtain more stable wind resources, and the method has great strategic significance. The limit height of the assembled tower drum hub design reaches 160 meters, so that the assembled tower drum hub mainly faces tower drum products with the hub design height of 150-160 meters or less, and the construction and installation scheme basically adopts a section-by-section hoisting installation mode.

In the product research and development of the ultra-high wind power tower barrel (particularly over 170 meters), a self-lifting technology is generally adopted, the self-lifting technology in the related technology is based on a cast-in-place barrel body, particularly cast-in-place cantilever corbels, and the self-lifting internal force transmission is realized through the structure of the inner and outer barrel body cantilever corbels by a prestressed steel strand self-lifting method, but the cast-in-place technology has the defects of high difficulty, difficult precision and quality control, long construction period, influence on the self-lifting effect and quality control, and bring adverse effects to the engineering quality control and the engineering cost reduction and efficiency improvement.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, the embodiment of the utility model provides a circular cross section assembled is from promoting wind power tower cylinder.

The circular-section assembled self-lifting wind power tower cylinder comprises a tower cylinder foundation, a tower cylinder body and a wind power generator set, wherein the tower cylinder body is arranged on the tower cylinder foundation, and the wind power generator set is arranged at the top of the tower cylinder foundation; wherein, the tower section body includes concrete section and steel section, the steel section with the top of concrete section links to each other, the concrete section includes first concrete section and second concrete section, first concrete section includes a plurality of first concrete segments that link to each other in proper order on the tower section of height direction and the first bracket festival section that is located the bottom, the second concrete section includes a plurality of second concrete segments that link to each other in proper order on the tower section of height direction and the second bracket festival section that is located the top, first concrete section with the second concrete section adopts the assembled technology to build respectively, just first concrete section with adopt between the second concrete section from promoting the technology equipment, first bracket festival section with the second bracket festival section links to each other.

The utility model provides a circular cross section assembled is from promoting wind power tower section of thick bamboo adopts the assembled structure and from the scheme that the lifting technology combined together, solve the tradition and promote the precision control and the quality control difficult problem that cast-in-place tube structure exists certainly, solve the limitation of traditional assembled tower section of thick bamboo face to super high height, bracket segment section adopts the assembled technical construction, realized the prefabricated assembly of bracket segment section for the self-lifting, solve the weak problem of traditional formula bracket local performance of pouring, improve the whole atress performance of a tower section of thick bamboo bracket position, satisfy its atress characteristic needs of self-lifting. Therefore, the utility model provides a circular cross section assembled is from promoting wind power tower cylinder provides the thinking for super high wind power tower cylinder's construction.

In some embodiments, the first concrete segment comprises a plurality of first prefabricated pipe pieces which are sequentially spliced and connected in the circumferential direction of the first concrete segment, each first prefabricated pipe piece comprises a key groove and a shear key, the shear key of one first prefabricated pipe piece is matched in the key groove of the other first prefabricated pipe piece, and the first prefabricated pipe pieces and the shear keys are connected by adopting vertical dowel bars; and/or, the second concrete segment comprises a plurality of second prefabricated pipe pieces which are sequentially spliced in the circumferential direction of the second concrete segment, each second prefabricated pipe piece comprises a key groove and a shear key, the shear key of each second prefabricated pipe piece is matched with the other shear key in the key groove of each second prefabricated pipe piece, and the two prefabricated pipe pieces are connected through vertical dowel bars.

In some embodiments, the first corbel section is an L-shaped corbel section, and includes a first connection portion for connecting to the first concrete section and a first corbel portion for connecting to the second corbel section, and the first corbel section is provided with a first pre-stressed duct extending through each of the first connection portion and the first corbel portion, and a first anchor duct extending through the first corbel portion and a second pre-stressed duct.

In some embodiments, a first pre-buried bolt hole is formed in the top of the first concrete segment, and a third pre-stressed duct is formed in the first concrete segment, wherein the third pre-stressed ducts are communicated with each other and opposite to the first pre-stressed duct.

In some embodiments, the first bracket segment comprises a plurality of first bracket prefabricated pipe pieces which are sequentially spliced and connected in the circumferential direction, each first bracket prefabricated pipe piece comprises at least two key slots and at least two shear keys, the shear keys of the first bracket prefabricated pipe pieces are matched with one another in a one-to-one mode in the key slots of the first bracket prefabricated pipe pieces and are connected with one another through vertical inserted bars, wherein the first bracket prefabricated pipe pieces correspond to the parts of the first connecting portions and are provided with at least one key slot and at least one shear key, and the first bracket prefabricated pipe pieces correspond to the parts of the first bracket portions and are provided with at least one key slot and at least one shear key.

In some embodiments, the second bracket section is an L-shaped bracket section including a second connecting portion for connecting to the second concrete section and a second bracket portion for connecting to the first bracket section, the second bracket section having a fourth pre-stressed duct formed therethrough for each of the second connecting portion and the second bracket portion, a second anchor duct formed therethrough for the second bracket portion, and a fifth pre-stressed duct formed therethrough for the second anchor duct, wherein the fifth pre-stressed duct is opposite to the second pre-stressed duct so as to arrange a self-lifting pre-stressed tendon, and the first anchor duct is opposite to the second anchor duct so as to arrange a connecting anchor.

In some embodiments, the top of the second concrete segment is provided with a second pre-buried bolt hole, and the second concrete segment is further provided with a sixth pre-stressed duct which penetrates through the second pre-stressed duct and is opposite to the fourth pre-stressed duct.

In some embodiments, the second bracket segment comprises a plurality of second bracket prefabricated pipe pieces which are sequentially spliced and connected in the circumferential direction, each second bracket prefabricated pipe piece comprises at least two key grooves and at least two shear keys, the shear keys of the second bracket prefabricated pipe pieces are matched with one another in a one-to-one mode in the key grooves of the second bracket prefabricated pipe pieces and are connected with one another through vertical inserted bars, wherein the second bracket prefabricated pipe pieces correspond to the parts of the second connecting parts and are provided with at least one key groove and at least one shear key, and the second bracket prefabricated pipe pieces correspond to the parts of the second bracket parts and are provided with at least one key groove and at least one shear key.

In some embodiments, the width of the shear key in the vertical direction gradually decreases toward the direction protruding into the key groove, so that at least one of two vertically opposite side surfaces thereof is configured as a slope.

In some embodiments, the wind tower further comprises a steel transition segment, the first concrete segment at the topmost portion of the first concrete segment is a top transition segment, and the steel segment and the top transition segment are connected through the steel transition segment; the top transition section comprises a first portion and a second portion, wherein the first portion is used for being connected with the steel transition section, the second portion is used for being adjacent to the lower portion, the first portion is connected with the first concrete section, the thickness of the side wall of the first portion is consistent, the thickness of the side wall of the second portion is gradually reduced from top to bottom, the top size of the second portion is matched with the bottom size of the first portion, and the bottom size of the second portion is adjacent to the lower portion, and the top size of the first concrete section is matched with the top size of the second concrete section.

In some embodiments, the first concrete section comprises a straight cylinder section, a conical cylinder section and a middle transition section in the height direction of the tower, the bottom of the straight cylinder section is connected with the top of the conical cylinder section through the middle transition section, the middle transition section comprises a straight cylinder section connected with the straight cylinder section and a conical section connected with the conical cylinder section, and the bottom of the conical section is larger than the straight cylinder section.

In some embodiments, the middle transition section comprises a steel shell and concrete filled in the steel shell.

In some embodiments, the second concrete segment at the bottommost part of the second concrete segment is a door opening segment, the side wall of the door opening segment is provided with a through door opening, and the thickness of the side wall near the door opening is larger than that of the side wall at other parts.

In some embodiments, the wind tower has a height of 170 meters or more.

Drawings

Fig. 1 is a circular cross section assembled from promoting wind power tower cylinder's structure chart in the embodiment of the utility model.

Fig. 2 is a structural diagram of a tower body according to an embodiment of the present invention.

Fig. 3 is a cross-sectional view of a first section of concrete in an embodiment of the invention.

Fig. 4 is a cross-sectional view of a second section of concrete in an embodiment of the invention.

Fig. 5 is a block diagram of a top transition section in an embodiment of the invention.

Fig. 6 is a partial structural view of the top transition section in the embodiment of the present invention.

Fig. 7 is a block diagram of a first concrete segment of a straight section in an embodiment of the invention.

Fig. 8 is a partial structural view of fig. 7.

Fig. 9 is a block diagram of a first concrete segment of a cone segment in an embodiment of the invention.

Fig. 10 is a partial structural view of fig. 9.

Fig. 11 is a structural diagram of a middle transition section in an embodiment of the present invention.

Fig. 12 is a partial structural view of fig. 11.

Fig. 13 is a partial structural view of a steel housing in an embodiment of the present invention.

Fig. 14 is a block diagram of a first corbel section in an embodiment of the invention.

Fig. 15 is a structure diagram of a first bracket prefabricated segment in an embodiment of the present invention.

Fig. 16 is a block diagram of a second corbel section in an embodiment of the invention.

Fig. 17 is a structural diagram of a second bracket prefabricated segment in an embodiment of the present invention.

Fig. 18 is a block diagram of a second concrete segment in an embodiment of the invention.

Fig. 19 is a block diagram of a second prefabricated segment in an embodiment of the present invention.

Fig. 20 is a block diagram of a second, bottommost concrete segment in an embodiment of the invention.

Fig. 21 is a partial structural view of fig. 20.

Fig. 22 is a structural diagram of a tower foundation and a self-elevating platform according to an embodiment of the present invention.

Fig. 23 is a schematic view of a first construction process of a wind power tower according to an embodiment of the present invention.

Fig. 24 is a schematic view of a second construction process of a wind power tower according to an embodiment of the present invention.

Fig. 25 is a third schematic view of a building process of a wind power tower in an embodiment of the present invention.

Fig. 26 is a schematic view illustrating a fourth process of building a wind tower according to an embodiment of the present invention.

Fig. 27 is a schematic view of a fourth construction process of the wind power tower in the embodiment of the present invention.

Fig. 28 is a partial schematic view of fig. 27.

Fig. 29 is a bottom view of the structure of fig. 27.

Fig. 30 is a cross-sectional view of fig. 28.

Fig. 31 is a cross-sectional view of fig. 27.

FIG. 32 is a partial schematic view of a fully constructed wind tower.

Reference numerals:

a wind power tower cylinder 100,

The self-lifting bearing platform 11, the tower body 2, the steel section 21, the first concrete section 22, the straight cylinder section 2201, the conical cylinder section 2202, the middle transition section 2203, the straight cylinder section 2204, the conical section 2205, the steel shell 2206, the first concrete section 221, the first prefabricated pipe piece 2211, the top transition section 2212, the first part 2213, the second part 2214, the first bracket section 222, the first connection part 2221, the first bracket part 2222, the first bracket prefabricated pipe piece 2223, the second concrete section 23, the second concrete section 231, the second prefabricated pipe piece 2311, the door opening 2312, the second bracket section 232, the steel section 2201, the steel shell and the steel shell the second connecting portion 2321, the second bracket portion 2322, the second bracket prefabricated segment 2323, the key slot 24, the second reserved hole 241, the shear key 25, the first reserved hole 251, the wind turbine generator 3, the steel transfer section 4, the first pre-stressed hole 51, the second pre-stressed hole 52, the third pre-stressed hole 53, the fourth pre-stressed hole 54, the fifth pre-stressed hole 55, the sixth pre-stressed hole 56, the first pre-buried bolt hole 61, the second pre-buried bolt hole 62, the first anchor rod hole 71, the second anchor rod hole 72, the anchor rod 8, the self-lifting pre-stressed tendons 9 and the pre-stressed tendons 10.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

The present invention provides a circular cross-section fabricated self-lifting wind tower 100 as described below with respect to FIGS. 1-32. Wind power tower cylinder 100 includes tower cylinder basis 1, tower cylinder body 2 and wind turbine generator system 3, and tower cylinder body 2 establishes on tower cylinder basis 1, and wind turbine generator system 3 installs at tower cylinder body 2 tops.

The tower body 2 comprises a concrete section and a steel section 21, wherein the steel section 21 is connected with the top of the concrete section, and the concrete section comprises a first concrete section 22 and a second concrete section 23 which are assembled and connected by adopting a self-lifting technology.

As shown in fig. 3, the first concrete segment 22 includes a plurality of first concrete segments 221 and a first bracket segment 222, the plurality of first concrete segments 221 and the first bracket segment 222 are sequentially assembled in the tower height direction by using an assembly technique, and the first bracket segment 222 is located at the bottom of the first concrete segment 22, that is, the plurality of first concrete segments 221 and the first bracket segment 222 are sequentially connected from top to bottom to form the first concrete segment 22.

As shown in fig. 4, the second concrete segment 23 includes a plurality of second concrete segments 231 and a plurality of second bracket segments 232, the plurality of second concrete segments 231 and the plurality of second bracket segments 232 are sequentially assembled in the tower height direction by using an assembly technique, and the second bracket segments 232 are located at the top of the second concrete segment 23, that is, the second bracket segments 232 and the plurality of second concrete segments 231 are sequentially connected from top to bottom to form the second concrete segment 23. The first leg segment 222 is connected to the second leg segment 232.

The utility model provides a circular cross section assembled is from promoting wind power tower section of thick bamboo adopts assembled structure and the scheme that combines together from the lifting technology, solve the tradition and promote the accurate control and the quality control difficult problem that cast-in-place tube structure exists certainly, solve the limitation of traditional assembled tower section of thick bamboo face super high, bracket segment section adopts the assembly type technical construction, the prefabricated assembly who uses bracket segment section from promoting has been realized, solve the weak problem of traditional cast bracket local performance, improve the whole atress performance of a tower section of thick bamboo bracket position, satisfy its atress characteristic needs from promoting. Therefore, the utility model provides a circular cross section assembled is from promoting wind power tower cylinder provides the thinking for super high wind power tower cylinder's construction.

As shown in fig. 1 to 32, the cross section of the assembled self-lifting wind power tower provided by the embodiment of the present invention is circular, that is, the assembled self-lifting wind power tower provided by the present invention is a cylindrical structure.

In some embodiments, as shown in FIG. 2, the wind tower 100 further includes a steel transition segment 4, and the steel segment 21 and the first concrete segment 22 are connected by the steel transition segment 4. That is, steel transition piece 4 is attached to the top of first concrete segment 22 and steel segment 21 is attached to the top of steel transition piece 4.

In some embodiments, as shown in fig. 3, the topmost first concrete segment 221 of the first concrete segment 22 is a top transition 2212, and the steel segment 21 and the top transition 2212 are connected by a steel transition 4. As shown in fig. 5 and 6, the top transition 2212 includes a first portion 2213 and a second portion 2214 in the up-down direction. The bottom of the first portion 2213 is connected to the top of the second portion 2214, the first portion 2213 is adapted to be connected to a steel transition section 4, and the second portion 2214 is adapted to be connected to an underlying adjacent first concrete segment 221. The first portion 2213 is a uniform cylindrical structure with uniform thickness of the sidewalls. The sidewall thickness of the second portion 2214 gradually decreases from top to bottom.

In the embodiment shown in fig. 5 and 6, the inner and outer circumferential surfaces of the first portion 2213 extend in the vertical direction, and the inner wall surface of the second portion 2214 is beveled. The top dimension of the second portion 2214 matches the bottom dimension of the first portion 2213, i.e., the top of the second portion 2214 matches smoothly with the bottom shape of the first portion 2213, the bottom dimension of the second portion 2214 matches the top dimension of the first concrete segment 221 adjacent below, i.e., the bottom of the second portion 2214 matches the top shape of the first concrete segment 221 adjacent below, to make the first concrete segment 22 structurally sound.

Preferably, the bottom dimension of the steel transition section 4 matches the top dimension of the first portion 2213.

As shown in fig. 5 and 6, the top transition segment 2212 is provided with a plurality of third pre-stressed ducts 53 distributed at intervals along the circumference, the third pre-stressed ducts 53 penetrate through the top transition segment 2212, and the third pre-stressed ducts 53 are used for penetrating pre-stressed tendons. The top of top changeover portion 2212 still is equipped with a plurality of first pre-buried bolt holes 61 along its circumference interval distribution to the installation rings.

In some embodiments, as shown in FIG. 3, first concrete section 22 includes, in the height direction of the tower, a straight cylindrical section 2201, a conical cylindrical section 2202, and a middle transition section 2203, with the bottom of straight cylindrical section 2201 connected to the top of conical cylindrical section 2202 through middle transition section 2203.

The straight-tube section 2201 comprises a plurality of straight-tube-shaped first concrete segments 221 (as shown in fig. 7 and 8) which are sequentially connected in the height direction, the inner circumferential surface and the outer circumferential surface of the first concrete segment 221 of the straight-tube section 2201 extend in the vertical direction, a plurality of third pre-stressed ducts 53 are arranged at intervals along the circumferential direction, the third pre-stressed ducts 53 penetrate through the first concrete segments 221, and the third pre-stressed ducts 53 are used for penetrating through pre-stressed tendons. The top of the first concrete segment 221 in fig. 7 is further provided with a plurality of first pre-buried bolt holes 61 distributed at intervals along the circumference thereof for installing hoisting rings.

The cone section 2202 comprises a plurality of cone-shaped first concrete segments 221 connected in series in the height direction (as shown in fig. 9 and 10). The outer diameter of the conical tube section 2202 gradually increases from top to bottom. The inner and outer peripheral surfaces of the first concrete segment 221 of the conical cylinder section 2202 are both inclined surfaces, and are provided with a plurality of third pre-stressed ducts 53 distributed at intervals along the circumferential direction, the third pre-stressed ducts 53 penetrate through the first concrete segment 221, and the third pre-stressed ducts 53 are used for penetrating pre-stressed tendons. The top of the first concrete segment 221 in fig. 9 is further provided with a plurality of first pre-buried bolt holes 61 distributed at intervals along the circumference thereof for installing the hoisting ring. Optionally, the taper of the barrel section 2202 ranges from 65-80 degrees.

As shown in fig. 11 and 12, middle transition section 2203 includes a straight section 2204 connected to straight section 2201 and a tapered section 2205 connected to tapered section 2202, the top of tapered section 2205 being connected to the bottom of straight section 2204, and the top of tapered section 2205 being sized to match the bottom of straight section 2204 and the bottom of tapered section 2205 being sized to match the top of adjacent first concrete section 221. The bottom dimension of the tapered portion 2205 is larger than the straight portion 2204. The middle transition section 2203 is provided with a plurality of third prestressed ducts 53 distributed at intervals along the circumferential direction of the middle transition section 2203, the third prestressed ducts 53 penetrate through the middle transition section 2203, and the third prestressed ducts 53 are used for penetrating through prestressed tendons. The top of middle part changeover portion 2203 still is equipped with a plurality of first pre-buried bolt holes 61 along its circumference interval distribution for install rings.

After the first concrete segment 22 is assembled, the third prestressed ducts 53 of the plurality of first concrete segments 221 in the straight cylinder section 2201, the third prestressed duct 53 of the middle transition section 2203, and the third prestressed ducts 53 of the plurality of first concrete segments 221 in the tapered cylinder section 2202 are opposite to and communicated with each other, that is, the third prestressed ducts 53 of the first concrete segments 221 are opposite to and communicated with each other, and the prestressed tendons penetrate through the prestressed ducts from top to bottom to tension the first concrete segment 22 in a prestressed manner.

To improve structural strength, in some alternative embodiments, top transition 2212 and middle transition 2203 are reinforced concrete segments, for example, as shown in fig. 13, middle transition 2203 comprises steel shell 2206 and concrete filled in steel shell 2206.

In some embodiments, as shown in fig. 5, 7, 9, and 11, the first concrete segment 221 includes several first prefabricated segment 2211 spliced together in sequence in the circumferential direction, the first prefabricated segment 2211 includes a key slot 24 and a shear key 25, and the shear key 25 of the first prefabricated segment 2211 is fitted in the key slot 24 of another first prefabricated segment 2211 and connected to the first prefabricated segment 2211 by a vertical dowel.

Specifically, as shown in fig. 5, 7, 9, 11, first concrete segment 221 is spliced from two first prefabricated segments 2211. As shown in fig. 6, 8, 10 and 12, the first segment 2211 is provided with a key slot 24 at one end in the circumferential direction and a shear key 25 at the other end. The shear key 25 is provided with a first reserved hole 251 penetrating along the vertical direction, a second reserved hole 241 penetrating is arranged above and below the key groove 24, the first reserved hole 251 is opposite to the second reserved hole 241, and the first prefabricated duct pieces 2211 are spliced by inserting ribs into the holes in grouting. As shown in fig. 11, a part of the key slot 24 and the shear key 25 of the first prefabricated segment 2211 of the middle transition section 2203 are located on the straight cylinder portion 2204, and another part of the key slot 24 and the shear key 25 are located on the tapered portion 2205, that is, the key slot 24 and the shear key 25 are located at the variable diameter portion of the middle transition section 2203, so that the connection at the variable diameter portion of the middle transition section 2203 is more stable.

Of course, in other embodiments, first concrete segment 221 may be spliced from more than two first prefabricated segment 2211. Alternatively, first preform segment 2211 may be provided with a plurality of keyways 24 and a plurality of shear keys 25.

Further, the width of the shear key 25 in the vertical direction gradually decreases toward the direction protruding into the key groove 24, so that at least one of two vertically opposite side surfaces thereof is configured as a slope. In the embodiment shown in fig. 6, 8, 10 and 12, the two vertically opposite sides of the shear key 25 are beveled. The shape of the key groove 24 is matched with that of the shear key 25, namely the splicing surfaces of the key groove 24 and the shear key 25 are inclined surfaces. Therefore, the splicing process precision and the structural strength between the first prefabricated segment 2211 are further improved.

Further, as shown in fig. 3, the joints before first prefabricated segment 2211 of two adjacent first concrete segments 221 are staggered, so that the structural strength can be further improved.

In some embodiments, as shown in fig. 14 and 15, the first leg section 222 is an L-shaped leg section, and includes a first connection portion 2221 and a first leg portion 2222, a bottom portion of the first connection portion 2221 is connected to the first leg portion 2222, the first connection portion 2221 and the first leg portion 2222 are configured in an L-shaped structure, and a portion of the first leg portion 2222 is located outside the first connection portion 2221. The first connection portion 2221 is adapted to be connected to the first concrete segment 221, and the first bracket portion 2222 is adapted to be connected to the second bracket segment 232.

As shown in fig. 14 and 15, a first pre-stressed duct 51 extending through each of the first connection portion 2221 and the first corbel portion 2222, a first anchor duct 71 extending through the first corbel portion 2222, and a second pre-stressed duct 52 are provided in the first corbel section 222. The third prestressed duct 53 of the first concrete segment 221 is opposite to the first prestressed duct 51, and the prestressed tendon passes through the third prestressed duct 53 and the first prestressed duct 51 from top to bottom to prestress and stretch the first concrete segment 22. The second pre-stressing aperture 52 is used to arrange a self-lifting pre-stressing tendon to lift the first bracket section 222, and the first anchor aperture 71 is used to pass the anchor 8 after the self-lifting is completed to be connected to the second bracket section 232.

In some embodiments, as shown in fig. 15, the first bracket section 222 includes a plurality of first bracket prefabricated pipe pieces 2223 connected in series in a splicing manner in the circumferential direction, each first bracket prefabricated pipe piece 2223 includes at least two key slots 24 and at least two shear keys 25, the shear keys 25 of the first bracket prefabricated pipe pieces 2223 are fitted in the key slots 24 of another first bracket prefabricated pipe piece 2223 in a one-to-one correspondence manner, and are connected to each other by vertical insertion ribs, wherein at least one key slot 24 and at least one shear key 25 are provided on a portion of the first bracket prefabricated pipe piece 2223 corresponding to the first connection portion 2221, and at least one key slot 24 and at least one shear key 25 are provided on a portion of the first bracket prefabricated pipe piece 2223 corresponding to the first bracket portion 2222.

Specifically, as shown in fig. 14 and 15, the first bracket section 222 is formed by splicing four first bracket prefabricated pipe pieces 2223, one end of each first bracket prefabricated pipe piece 2223 in the circumferential direction is provided with two key grooves 24, the two key grooves 24 are distributed up and down, and the other end is provided with two shear keys 25. The shear key 25 is provided with a first reserved hole 251 penetrating in the vertical direction, a second reserved hole 241 penetrating is arranged above and below the key groove 24, the first reserved hole 251 is opposite to the second reserved hole 241, and the inner reinforcing steel bar inserting grouting is performed to achieve splicing of the first corbel prefabricated pipe pieces 2223. A key groove 24 and a shear key 25 are formed in a portion of the first corbel preform segment 2223 corresponding to the first connection portion 2221, and a key groove 24 and a shear key 25 are formed in a portion of the first corbel preform segment 2223 corresponding to the first corbel portion 2222.

Further, the width of the shear key 25 in the vertical direction is gradually reduced toward the direction protruding into the key groove 24, so that at least one of two side faces thereof opposed in the vertical direction is configured as a slope. In the embodiment shown in fig. 1, both vertically opposite sides of the shear key 25 are beveled. The shape of the key groove 24 is matched with that of the shear key 25, namely the splicing surfaces of the key groove 24 and the shear key 25 are inclined surfaces. Therefore, the splicing process precision and the structural strength between the first bracket prefabricated pipe pieces 2223 are further improved.

In some embodiments, as shown in fig. 16 and 17, the second bracket segment 232 is an L-shaped bracket segment, and includes a second connecting portion 2321 and a second bracket portion 2322, a top portion of the second connecting portion 2321 is connected to the second bracket portion 2322, the second connecting portion 2321 and the second bracket portion 2322 are configured as an L-shaped structure, and a portion of the second bracket portion 2322 is located inside the second connecting portion 2321. The second connecting portion 2321 is adapted to be connected to the second concrete segment 231, and the second corbel portion 2322 is adapted to be connected to the first corbel segment 222.

As shown in fig. 16 and 17, a fourth pre-stressed duct 54 extending through each of the second connecting portion 2321 and the second corbel portion 2322, a second anchor duct 72 extending through the second corbel portion 2322, and a fifth pre-stressed duct 55 are disposed within the second corbel segment 232. The fifth pre-stressed duct 55 is opposite to the second pre-stressed duct 52, and is used for arranging the self-lifting tendon. The second anchor bore 72 is opposite the first anchor bore 71 for passing the anchor 8 after self-lifting is complete to effect connection of the first bracket section 222 with the second bracket section 232.

As shown in fig. 18 to 21, the second concrete segment 231 is provided with a plurality of sixth pre-stressed ducts 56 spaced along the circumference thereof, the sixth pre-stressed ducts 56 penetrate through the second concrete segment 231, and the sixth pre-stressed ducts 56 are used for penetrating pre-stressed tendons. The top of second concrete segment 231 still is equipped with a plurality of second pre-buried bolt holes 62 along its circumference interval distribution for rings are installed to the later stage. The sixth pre-stressed ducts 56 of the second concrete segment 231 are communicated with each other and opposite to the fourth pre-stressed duct 54, and the pre-stressed tendons pass through the fourth pre-stressed duct 54 of the second bracket segment 232 and the sixth pre-stressed duct 56 of the second concrete segment 231 from top to bottom to pre-stress-stretch the second concrete segment 23.

In some embodiments, as shown in fig. 16 and 17, the second bracket segment 232 includes several second bracket prefabricated duct pieces 2323 sequentially spliced and connected in the circumferential direction thereof, each second bracket prefabricated duct piece 2323 includes at least two key slots 24 and at least two shear keys 25, the shear keys 25 of the second bracket prefabricated duct pieces 2323 are fitted into the key slots 24 of another second bracket prefabricated duct piece 2323 in a one-to-one correspondence manner, and are connected with each other by vertical dowels, wherein the portion of each second bracket prefabricated duct piece 2323 corresponding to the second connecting portion 2321 is provided with at least one key slot 24 and at least one shear key 25, and the portion of each second bracket prefabricated duct piece 2323 corresponding to the second bracket portion 2322 is provided with at least one key slot 24 and at least one shear key 25.

Specifically, as shown in fig. 16 and 17, the second bracket segment 232 is formed by splicing four second bracket prefabricated duct pieces 2323, one end of each second bracket prefabricated duct piece 2323 in the circumferential direction is provided with two key grooves 24, the two key grooves 24 are distributed up and down, and the other end is provided with two shear keys 25. The shear key 25 is provided with a first reserved hole 251 penetrating in the vertical direction, a second reserved hole 241 penetrating is arranged above and below the key groove 24, the first reserved hole 251 is opposite to the second reserved hole 241, and the second bracket prefabricated duct pieces 2323 are spliced through the inner reinforcing bar grouting. The portion of the second bracket precast segment 2323 corresponding to the second connection portion 2321 is provided with a key groove 24 and a shear key 25, and the portion of the second bracket precast segment 2323 corresponding to the second bracket portion 2322 is provided with a key groove 24 and a shear key 25.

Further, the width of the shear key 25 in the vertical direction gradually decreases toward the direction protruding into the key groove 24, so that at least one of two vertically opposite side surfaces thereof is configured as a slope. In the embodiment shown in fig. 16 and 17, both vertically opposite sides of the shear key 25 are beveled. The shape of the key groove 24 is matched with that of the shear key 25, namely the splicing surface of the key groove 24 and the shear key 25 is an inclined surface. Therefore, the splicing process precision and the structural strength between the second bracket prefabricated duct pieces 2323 are further improved.

Further, as shown in fig. 4, the joints before first prefabricated segment 2211 of two adjacent first concrete segments 221 are staggered, so that the structural strength can be further improved.

In some embodiments, the second concrete segment 231 includes a straight cylindrical second concrete segment 231 and a conical cylindrical second concrete segment 231. Wherein the conical second concrete segment 231 is arranged below the straight second concrete segment 231.

In some embodiments, as shown in fig. 18-21, the second concrete segment 231 comprises a plurality of second prefabricated segment 2311 spliced together in sequence in the circumferential direction, the second prefabricated segment 2311 comprises a key slot 24 and a shear key 25, the shear key 25 of the second prefabricated segment 2311 is fitted in the key slot 24 of another second prefabricated segment 2311, and the two segments are connected by vertical dowel bars.

Specifically, as shown in fig. 18-21, the second concrete segment 231 is formed by splicing four second prefabricated segments 2311, and one end of the second prefabricated segments 2311 in the circumferential direction is provided with a key groove 24, and the other end is provided with a shear key 25. The shear key 25 is provided with a first reserved hole 251 penetrating along the vertical direction, a second reserved hole 241 penetrating is arranged above and below the key groove 24, the first reserved hole 251 is opposite to the second reserved hole 241, and the second prefabricated pipe pieces 2311 are spliced by inserting ribs into the holes in grouting mode.

Of course, in other embodiments, the second concrete segment 231 may be spliced from more than four second prefabricated segments 2311. Alternatively, second segment 2311 may be provided with a plurality of keyways 24 and a plurality of shear keys 25.

Further, the width of the shear key 25 in the vertical direction gradually decreases toward the direction protruding into the key groove 24, so that at least one of two vertically opposite side surfaces thereof is configured as a slope. In the embodiment shown in fig. 24, both vertically opposite side surfaces of the shear key 25 are beveled. The shape of the key groove 24 is matched with that of the shear key 25, namely the splicing surface of the key groove 24 and the shear key 25 is an inclined surface. Therefore, the splicing process precision and the structural strength between the second prefabricated pipe pieces 2311 are further improved.

As shown in fig. 20 and 21, the second concrete segment 231 at the bottommost of the second concrete segment 23 is a door opening segment, the sidewall of the door opening segment is provided with a door opening 2312 therethrough, the thickness of the sidewall near the door opening 2312 is larger than that of the sidewall at other parts, that is, the sidewall near the door opening 2312 is locally thickened, so as to enhance the structural strength at the door opening 2312.

In some embodiments, the height of the wind tower 100 may be greater than or equal to 170 meters.

In some embodiments, the height of the wind tower 100 may be 200 meters or greater.

Optionally, the height of the first concrete segment 221 is 2-6 meters. Optionally, the height of the second concrete segment 231 is 2-6 meters.

The following description of the embodiment of the present invention provides a construction process of a circular cross section assembled self-lifting wind power tower 100 according to fig. 1-32:

s10: as shown in fig. 22, a tower foundation 1 is arranged, and a self-lifting bearing platform 11 is installed at the top of the tower foundation 1, wherein the self-lifting bearing platform 11 is composed of a plurality of piles at intervals;

s20: assembling the first bracket section 222 on the self-lifting platform 11 (as shown in fig. 23), assembling the second concrete section 231 (i.e., the door opening section) at the bottom and sleeving the first bracket section 222 and the self-lifting platform 11 (as shown in fig. 24), wherein the door opening 2312 of the door opening section is opposite to the interval between the pile columns, so that an operator can enter the wind power tower 100 through the door opening 2312 and can climb up the inner safety staircase tower;

s30: assembling a first concrete segment 221 above a first corbel segment 222 from below and above in sequence to form a first concrete segment 22, and assembling the remaining second concrete segments 231 and a second corbel segment 232 below and above in sequence to the door opening segment to form a second concrete segment 23, fig. 25 being an in-construction structure, fig. 26 being a completed construction;

s40: lifting the first concrete segment 22 upwardly using a self-lifting technique connects the first leg segment 222 with the second leg segment 232 to complete the self-lifting assembly of the first concrete segment 22 and the second concrete segment 23.

The embodiment of the utility model provides a circular cross section assembled is from promoting wind power tower's construction technology can improve the wind power tower section of thick bamboo of superelevation height (the biggest wheel hub design height reaches 200 meters) and build the efficiency, realizes industrialization, the standardization of superelevation height wind power tower section of thick bamboo product.

In some embodiments, in step S30, as shown in fig. 27, after the first concrete segment 22 is assembled, the steel transition segment 4 is assembled on top of the first concrete segment 22, the first concrete segment 22 is prestressed and tensioned, the embedded bolts of the steel transition segment 4 are connected with the prestressed tendons penetrating the first concrete segment 22, and then the steel segment 21 and the wind turbine generator 3 are assembled on the steel transition segment 4.

In step S40, as shown in fig. 28 to 31, the self-lifting prestressing tendons 9 respectively pass through the fifth prestressing duct 55 on the second bracket segment 232 and the second prestressing duct 52 on the first bracket segment 222 downward and are anchored at the bottom of the first bracket segment 222, the lifting operation is performed at a rated speed, and the first concrete segment 22, the steel transfer segment 4, the steel segment 21 and the wind turbine generator set 3 are lifted upward until the top of the first bracket prefabricated segment 2223 of the first bracket segment 222 abuts against the bottom of the second bracket prefabricated segment 2323 of the second bracket segment 232. As shown in fig. 32, the first and second leg segments 222 and 232 are connected by using the anchor 8 through the first and second anchor hole 71 and 72, the self-elevating tendon 9 is anchored at the top of the second leg segment 232, and the self-elevating tendon 9 is cut and the inner gap of the hole is filled with aggregate after the anchoring is completed.

As shown in fig. 32, after the first bracket segment 222 is connected to the second bracket segment 232, the second concrete segment 23 is prestressed and tensioned by the prestressed tendon 10.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations to the above embodiments by those of ordinary skill in the art are intended to be within the scope of the present invention.

Claims (14)

1. The utility model provides a circular cross section assembled is from promoting wind power tower cylinder which characterized in that includes: the wind power generation system comprises a tower drum foundation, a tower drum body and a wind power generation set, wherein the tower drum body is arranged on the tower drum foundation, and the wind power generation set is arranged at the top of the tower drum foundation;

the tower body comprises a concrete section and a steel section, the steel section is connected with the top of the concrete section, the concrete section comprises a first concrete section and a second concrete section, the first concrete section comprises a plurality of first concrete sections which are sequentially connected in the height direction of the tower and a first bracket section which is positioned at the bottom, the second concrete section comprises a plurality of second concrete sections which are sequentially connected in the height direction of the tower and a second bracket section which is positioned at the top, the first concrete section and the second concrete section are respectively built by adopting an assembly type technology, the first concrete section and the second concrete section are assembled by adopting a self-lifting technology, and the first bracket section is connected with the second bracket section.

2. The circular-section assembled self-lifting wind turbine tower of claim 1, wherein the first concrete segment comprises a plurality of first prefabricated segments sequentially spliced and connected in the circumferential direction thereof, the first prefabricated segments comprise key slots and shear keys, the shear key of one prefabricated segment is fitted in the key slot of another prefabricated segment, and the first prefabricated segment and the shear key are connected by vertical dowel bars;

and/or, the second concrete segment comprises a plurality of second prefabricated pipe pieces which are sequentially spliced in the circumferential direction of the second concrete segment, each second prefabricated pipe piece comprises a key groove and a shear key, the shear key of each second prefabricated pipe piece is matched with the other shear key in the key groove of each second prefabricated pipe piece, and the two prefabricated pipe pieces are connected through vertical dowel bars.

3. The circular-section fabricated self-lifting wind tower according to claim 1, wherein the first corbel section is an L-shaped corbel section including a first connecting portion for connecting to the first concrete section and a first corbel portion for connecting to the second corbel section, the first corbel section having a first pre-stressing aperture therethrough and each of the first connecting portion and the first corbel portion, and first anchor apertures therethrough and a second pre-stressing aperture therethrough.

4. The circular-section assembled self-lifting wind tower as claimed in claim 3, wherein the first concrete segments are provided with first pre-buried bolt holes at the top and third pre-stressed ducts passing through the first concrete segments, the third pre-stressed ducts passing through each other and being opposite to the first pre-stressed ducts.

5. The circular-section assembled self-lifting wind tower drum as claimed in claim 3, wherein the first bracket segment comprises a plurality of first bracket prefabricated segments sequentially spliced and connected in the circumferential direction thereof, the first bracket prefabricated segments comprise at least two key slots and at least two shear keys, the shear keys of the first bracket prefabricated segments are fitted in the key slots of the other first bracket prefabricated segments in a one-to-one correspondence manner and are connected with each other by vertical dowel bars,

the first bracket prefabricated pipe piece corresponds the part of first connecting portion is equipped with at least one keyway and at least one shear force key, first bracket prefabricated pipe piece corresponds the part of first bracket portion is equipped with at least one keyway and at least one shear force key.

6. The circular-section fabricated self-lifting wind tower of claim 3, wherein the second leg segment is an L-shaped leg segment comprising a second connection portion for connecting to the second concrete segment and a second leg portion for connecting to the first leg segment, the second leg segment having a fourth pre-stressed aperture therethrough and each of the second connection portion and the second leg portion, a second anchor aperture therethrough and a fifth pre-stressed aperture therethrough,

wherein the fifth pre-stressed duct is opposite to the second pre-stressed duct for arranging self-lifting pre-stressed tendons, and the first anchor rod duct is opposite to the second anchor rod duct for arranging a connecting anchor rod.

7. The circular-section assembled self-lifting wind tower according to claim 6, wherein the second concrete segment is provided with second pre-buried bolt holes at the top, and the second concrete segment is further provided with sixth pre-stressed ducts passing through the second concrete segment, and the sixth pre-stressed ducts pass through the second pre-stressed ducts and are opposite to the fourth pre-stressed ducts.

8. The assembled self-lifting wind tower drum as claimed in claim 6, wherein the second bracket segment comprises a plurality of second bracket prefabricated segments sequentially spliced and connected in the circumferential direction, the second bracket prefabricated segments comprise at least two key slots and at least two shear keys, the shear keys of the second bracket prefabricated segments are fitted into the key slots of another second bracket prefabricated segment in a one-to-one correspondence manner and connected with each other by vertical dowel bars,

the second bracket prefabricated pipe piece corresponds the part of second connecting portion is equipped with at least one keyway and at least one shear force key, the second bracket prefabricated pipe piece corresponds the part of second bracket portion is equipped with at least one keyway and at least one shear force key.

9. The circular-section fabricated self-lifting wind tower as claimed in claim 2, 5 or 8, wherein the shear key has a width in the vertical direction that gradually decreases toward the inside of the key slot, so that at least one of two vertically opposite side surfaces thereof is configured as a bevel.

10. The circular-section fabricated self-lifting wind tower according to any one of claims 1-8, wherein the wind tower further comprises a steel transition section, wherein the first concrete segment at the topmost portion of the first concrete segment is a top transition section, and the steel segment and the top transition section are connected through the steel transition section;

the top transition section comprises a first portion and a second portion, wherein the first portion is used for being connected with the steel transition section, the second portion is used for being adjacent to the lower portion, the first portion is connected with the first concrete section, the thickness of the side wall of the first portion is consistent, the thickness of the side wall of the second portion is gradually reduced from top to bottom, the top size of the second portion is matched with the bottom size of the first portion, and the bottom size of the second portion is adjacent to the lower portion, and the top size of the first concrete section is matched with the top size of the second concrete section.

11. The circular cross-section assembled self-lifting wind tower according to any one of claims 1 to 8, wherein the first concrete section comprises a straight cylinder section, a conical cylinder section and a middle transition section in the height direction of the tower, the bottom of the straight cylinder section is connected with the top of the conical cylinder section through the middle transition section, the middle transition section comprises a straight cylinder section connected with the straight cylinder section and a conical section connected with the conical cylinder section, and the bottom size of the conical section is larger than the size of the straight cylinder section.

12. The circular-section fabricated self-lifting wind tower of claim 11, wherein the middle transition section comprises a steel shell and concrete filled within the steel shell.

13. The circular-section fabricated self-lifting wind tower according to any one of claims 1-8, wherein the second concrete segment at the bottommost portion of the second concrete segment is a door opening segment, a door opening is formed in a side wall of the door opening segment, and the thickness of the side wall near the door opening is larger than that of the side wall of other portions.

14. The circular-section fabricated self-lifting wind tower of any one of claims 1-8, wherein the wind tower has a height of 170 meters or more.

Images