CN216922355U - Steel-concrete hybrid tower - Google Patents
Steel-concrete hybrid tower Download PDFInfo
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- CN216922355U CN216922355U CN202122508354.5U CN202122508354U CN216922355U CN 216922355 U CN216922355 U CN 216922355U CN 202122508354 U CN202122508354 U CN 202122508354U CN 216922355 U CN216922355 U CN 216922355U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/728—Onshore wind turbines
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Abstract
The utility model provides a steel-concrete hybrid tower which comprises a tower foundation, a tower body and a prestressed cable, wherein at least one part of the tower foundation is arranged below the ground, the tower body is arranged on the tower foundation, the tower body comprises a steel tower section, a connecting piece and a concrete tower section which are sequentially connected from top to bottom, the height of the tower body in the vertical direction is more than or equal to 150 m, the prestressed cable penetrates through the concrete tower section, the top end of the prestressed cable is anchored on the connecting piece, and the bottom end of the prestressed cable is connected with the tower foundation. The steel-concrete mixed tower cylinder provided by the embodiment of the utility model has the advantages of high rigidity and good fatigue resistance, and the power generation efficiency of the wind power generation equipment comprising the ultrahigh concrete tower cylinder provided by the embodiment of the utility model is greatly improved.
Description
Technical Field
The utility model relates to the technical field of wind power generation, in particular to a steel-concrete mixed tower cylinder.
Background
Along with the increase of the generating efficiency of the fan, the length of the blade is longer and longer, and the height and the section size of the fan tower barrel matched with the blade are also increased continuously. At present, the common height of the domestic tower drum is mostly 120 meters, and although the improvement of the tower drum can bring the improvement of the generated energy, the increase of the height of the tower drum inevitably leads to the increase of the cost of the tower drum and the foundation, so that the realization of the ultrahigh tower drum with low cost is the challenge facing the industry at present. Traditional steel construction tower section of thick bamboo cost is higher, the transportation difficulty, and steel tower section of thick bamboo is lower at the self-oscillation frequency of wheel hub height when higher, produces the resonance with the wind wheel easily, causes the damage to cabin equipment, therefore steel tower section of thick bamboo receives certain restriction in the application in low wind speed district, is difficult to satisfy the construction requirement of large-section super high tower section of thick bamboo.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the embodiment of the utility model provides an ultrahigh steel-concrete hybrid tower with high structural strength.
The embodiment of the utility model provides a steel-concrete mixed tower cylinder, which comprises: a tower foundation, at least a portion of which is disposed below ground; the tower cylinder body is arranged on the tower cylinder foundation, the tower cylinder body comprises a steel tower cylinder section, a connecting piece and a concrete tower cylinder section which are sequentially connected from top to bottom, and the height of the tower cylinder body in the vertical direction is more than or equal to 150 m; and the prestressed cable penetrates through the concrete tower drum section, the top end of the prestressed cable is anchored on the connecting piece, and the bottom end of the prestressed cable is connected with the tower drum foundation.
The concrete tower section concrete material of the lower half section of the tower body of the steel-concrete mixed tower provided by the embodiment of the utility model has the advantages of high rigidity and good fatigue resistance, can provide a strength foundation for building an ultrahigh tower, and has a wide application scene in wind power energy development in a low wind speed area. In addition, the height of the concrete tower barrel provided by the embodiment of the utility model is higher than 120 meters of the common tower barrel in the related art, and the lifting of the tower barrel height brings the lifting of the wind power generation capacity, so that the power generation efficiency of the wind power generation equipment comprising the ultrahigh concrete tower barrel provided by the embodiment of the utility model is greatly improved.
In some embodiments, the maximum transverse dimension of the concrete tower section is gradually reduced from bottom to top, and the steel tower section is a straight section.
In some embodiments, the top end of the steel drum section has a maximum transverse dimension of 4.0 meters to 4.5 meters.
In some embodiments, the maximum transverse dimension of the bottom end of the concrete drum section is between 10 meters and 13 meters.
In some embodiments, the concrete tower section has a height in the up-down direction of 70 meters to 90 meters.
In some embodiments, the concrete tower tube section comprises a plurality of dry concrete sections which are sequentially connected in the up-down direction, and the steel tower tube section comprises a plurality of steel sections which are sequentially connected in the up-down direction.
In some embodiments, a tower duct is provided on the wall of the concrete section located at the topmost part, a connecting piece duct corresponding to the tower duct is provided on the connecting piece, and the top end of the prestressed cable is anchored after passing through the tower duct and the connecting piece duct in sequence.
In some embodiments, the connecting member is a circular ring, the outer diameter of the top end of the connecting member is smaller than the outer diameter of the bottom end of the connecting member, the height of the connecting member in the vertical direction is less than or equal to 4 meters, the outer diameter of the top end of the connecting member is less than or equal to 4.8 meters, and the outer diameter of the bottom end of the connecting member is less than or equal to 4.5 meters.
In some embodiments, the concrete section at the top most is a cast-in-place concrete section that is annular and configured as an integrally formed piece.
In some embodiments, the tower foundation is a solid structure, the steel-concrete hybrid tower includes an embedded anchor, a bottom of the embedded anchor is embedded in the tower foundation, and a bottom end of the prestressed cable is connected to a portion of the embedded anchor exposed out of the tower foundation.
Drawings
Fig. 1 is a concrete tower drum provided by an embodiment of the present invention.
Fig. 2 is a partially enlarged view of fig. 1 at a.
Fig. 3 is a partially enlarged view of fig. 1 at B.
Reference numerals:
a steel-concrete hybrid tower 100,
The tower comprises a tower base 110, a tower body 120, a steel tower section 121, a steel section 1211, a connecting piece 122, a concrete tower section 123, a concrete section 1231, a tower duct 124, a connecting piece duct 125, an adapter 130, a prestressed cable 140 and embedded anchor rods 150.
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 accompanying drawings are illustrative and intended to explain the present invention and should not be construed as limiting the present invention.
In the following, a steel-concrete hybrid tower 100 according to an embodiment of the present invention is described with reference to fig. 1 to 3, and includes a tower base 110, a tower body 120, and a prestressed cable 140.
At least a portion of tower foundation 110 is disposed below ground. The tower body 120 is disposed on the tower base 110, and a bottom end of the tower body 120 is connected to the tower base 110. The tower body 120 comprises a steel tower section 121, a connecting piece 122 and a concrete tower section 123 which are connected in sequence from top to bottom. It can also be said that the steel tower section 121 and the concrete tower section 123 are connected by a connecting piece 122. The height of the tower body 120 in the vertical direction is greater than or equal to 150 meters. The tower body 120 is hollow. Steel tower section 121, connecting piece 122 and concrete tower section 123 are the tubular structure. The prestressed cable 140 is arranged in the concrete tower barrel section 123 in a penetrating manner, the top end of the prestressed cable 140 is anchored on the connecting piece 122, and the bottom end of the prestressed cable 140 is connected with the tower barrel foundation 110. Optionally, the height of the tower body 120 in the vertical direction is greater than or equal to 150 meters and less than or equal to 170 meters. Further optionally, the height of the tower body 120 in the vertical direction is 160 meters.
The concrete material for the concrete tower section at the lower half section of the tower body of the steel-concrete hybrid tower provided by the embodiment of the utility model has the advantages of high rigidity and good fatigue resistance, can provide a strength foundation for building an ultrahigh tower, and has a wide application scene in wind power energy development in a low wind speed area. In addition, the height of the concrete tower barrel provided by the embodiment of the utility model is higher than 120 meters of the common tower barrel in the related art, and the lifting of the tower barrel height brings the lifting of the wind power generation capacity, so that the power generation efficiency of the wind power generation equipment comprising the ultrahigh concrete tower barrel provided by the embodiment of the utility model is greatly improved.
One embodiment provided by the present invention is described in detail below with reference to fig. 1-3.
As shown in FIG. 1, the steel-concrete hybrid tower 100 includes a tower foundation 110, a tower body 120, and a prestressed cable 140. The prestressed cable 140 includes a plurality of prestressed cables 140, and the plurality of prestressed cables 140 are arranged at intervals along the circumference of the steel-concrete hybrid tower 100. The top of tower section of thick bamboo body 120 still is equipped with adapter 130, and the adapter is used for installing the fan.
The tower base 110 serves as a supporting base for the tower body 120, and at least a portion of the tower base 110 is located under the ground. The bottom end of the prestressed cable 140 is connected to the tower base 110.
In the present embodiment, the tower base 110 is a solid structure. Optionally, tower foundation 110 is cast. In order to facilitate the connection of the lower end of the prestressed cable 140 with the tower foundation 110, an anchor bolt may be embedded when the tower foundation 110 is poured.
As shown in fig. 3, the steel-concrete hybrid tower 100 includes embedded anchor rods 150, the bottom of the embedded anchor rods 150 is embedded in the tower base 110, and the bottom ends of the prestressed cables 140 are connected to the portions of the embedded anchor rods 150 exposed from the tower base 110, so as to anchor the bottom ends of the prestressed cables 140.
The tower body 120 is mainly composed of a concrete tower section 123 at the bottom and a steel tower section 121 at the top, and the concrete tower section 123 and the steel tower section 121 are connected through a connecting piece 122. As shown in fig. 1, in the present embodiment, the concrete tower section 123 is a conical section, the maximum transverse dimension of the concrete tower section 123 gradually decreases from bottom to top, and the steel tower section 121 is a straight section, that is, the dimension of the steel tower section 121 does not change in the up-down direction. The maximum transverse dimension of the concrete tower segment 123 is the diameter of the maximum circumscribed circle thereof, and when the concrete tower segment 123 has a cylindrical structure, the maximum transverse dimension thereof is the outer diameter thereof.
Alternatively, the concrete section 1231 may be a circular cylindrical structure, i.e. circular in cross-section, or a polygonal cylindrical structure, i.e. polygonal in cross-section, e.g. octagonal, hexagonal. The steel section 1211 may have a circular cylindrical structure, i.e., a circular cross-section, or a polygonal cylindrical structure. Those skilled in the art can set up the setting as desired.
Optionally, the concrete tower segment 121 is an integrally formed structure, or may be a multi-piece assembly structure.
By way of example, in the present embodiment, concrete section 1231 is an octagonal ring. As shown in fig. 1, the concrete sections 1231 are tapered, and the maximum lateral dimension of each concrete section 1231 is gradually reduced from bottom to top. Because the size of each concrete segment 1231 is different, the concrete segments 1231 can be set to have different heights in order to facilitate transportation and hoisting, so that the weight of the concrete segments 1231 can be controlled within a reasonable range. As shown in fig. 1, the height of the concrete tower segment 123 located below is smaller than the height of the concrete tower segment 123 located above.
The steel section 1211 has a right circular cylinder structure, that is, the outer diameter of the steel section 1211 is uniform from top to bottom, and the length of each steel section 1211 can be the same. Optionally, each section 1211 of steel has a height of less than 20 meters for ease of transportation.
Optionally, the height of the concrete tower segment 123 in the up-down direction is 70 meters to 90 meters. The height of the steel tower segment 121 in the vertical direction can be set according to the required height of the tower body 120.
In order to ensure sufficient strength of the tower body 120, the tower body may be smaller. Alternatively, the maximum transverse dimension of the top end of the steel drum section 121 is 4.0-4.5 meters, if the steel section 1211 is cylindrical, i.e. the outer diameter of the steel section 1211 is 4.0-4.5 meters. Thereby better preventing the tower body 120 from interfering with the rotation of the blades. The higher the height of the tower body 120, the greater the wind energy that the blade may be subjected to, and because of the greater flexibility of the blade, the greater the risk of the tower body 120 interfering with the rotation of the blade when the maximum transverse dimension of the tip of the steel tower section 121 is greater than 4.5 meters. When the maximum transverse dimension of the top end of the steel tower section 121 is less than 4.0 meters, the structural strength of the tower body 120 may not meet the standard. Thus, the maximum transverse dimension of the top end of the steel tower segment 121 is in the range of 4.0-4.5 meters, and the tower body 120 has sufficient strength to avoid interfering with the rotation of the blades.
In this embodiment, the steel section 1211 has an outer diameter of 4.4 meters. In other embodiments, the outer diameter of steel section 1211 may also be 4.0 meters, 4.1 meters, 4.2 meters, or 4.5 meters.
Optionally, the maximum lateral dimension of the bottom end of the concrete tower segment 123 is 10-13 meters, so that the tower body 120 has excellent stability.
As shown in fig. 2, the connecting member 122 is circular ring-shaped, the outer diameter of the top end of the connecting member 122 is smaller than the outer diameter of the bottom end thereof, and the height of the connecting member in the up-down direction is not more than 4 meters, so as to facilitate transportation. The outer diameter of the bottom end of the connecting piece is less than or equal to 4.8 meters, and the outer diameter of the top end of the connecting piece is less than or equal to 4.5 meters, so that the interference to the blade can be avoided as far as possible. Optionally, the connector 122 is a steel connector.
The connection 122 includes a chassis, a housing, and an upper flange. The outer diameter of the chassis is larger than that of the upper flange. The bottom plate is connected to the bottom end of the housing, the upper flange is connected to the top end of the housing, the bottom plate of the connector 122 is connected to the top end of the topmost concrete section 1231, and the upper flange is connected to the bottom end of the bottommost steel section 1211. The connection mode can be a bolt connection mode and the like, and is not limited here.
In this embodiment, the topmost concrete section 1231 is a cast-in-place concrete tower section, which is annular and is constructed as an integrally formed piece. Optionally, the topmost concrete section 1231 is an octagonal full ring. The other concrete sections 1231 are processed by adopting a prefabrication process and are constructed and installed by adopting an assembly type process.
The prestressed cable 140 is disposed in the concrete tower segment 123, and the prestressed cable 140 may adopt an external prestressing technique or an internal prestressing technique. The top end of the prestressed cable 140 is anchored to the connecting member 122.
As shown in fig. 2, the prestressed cable 140 in this embodiment adopts an external prestressing technique, i.e. the prestressed cable 140 is an external prestressed cable. The wall of the top concrete section 1231 is provided with a tower duct 124, the chassis of the connecting member 122 is provided with a connecting member duct 125 corresponding to the tower duct 124, and the top end of the prestressed cable 140 sequentially passes through the tower duct 124 and the connecting member duct 125 and then is anchored.
The embodiment of the utility model also provides a construction process of the steel-concrete hybrid tower, and the steel-concrete hybrid tower 100 is the steel-concrete hybrid tower 100 of any one of the embodiments.
The construction process of the steel-concrete mixed tower barrel comprises the following steps:
s10: pouring to form a tower foundation 110, embedding an embedded anchor rod 150 in the tower foundation 110, and exposing the top end of the embedded anchor rod 150 from the tower foundation 110;
s20: mounting the concrete tower segment 123 on the tower foundation 110;
s30: installing connector 122 on top of concrete tower section 123;
s40: the prestressed cable 140 penetrates through the concrete tower barrel section 123, the bottom end of the prestressed cable is anchored at the top end of the pre-buried anchor rod 150, the prestressed cable 140 is subjected to prestressed tensioning, and the top end of the prestressed cable 140 is anchored on the chassis of the connecting piece 122;
s50: the bottom of the steel drum segment 121 is connected to a flange portion (upper flange) at the top of the connecting member 122.
In some embodiments, the concrete tower section 123 in step S20 is composed of a plurality of dry concrete sections 1231, and step S20 specifically includes: a number of dry concrete segments 1231 are installed on the tower foundation 110 to form the concrete tower segment 123.
In some embodiments, the steel tower segment 121 in step S50 is composed of a plurality of steel segments 1211, and step S50 specifically includes: a steel tower section 121 of steel sections 1211 is mounted on top of the connecting member 122 such that the steel section 1211 at the bottom most is connected to the connecting member 122.
The construction process of the steel-concrete hybrid tower provided by the embodiment of the utility model can economically construct an ultrahigh tower, and further construct a large wind generating set with higher generating efficiency.
In the description of the present invention, it is to be understood that the terms "central," "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 are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.
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 to implicitly indicate 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 specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. 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" and the like mean that a specific 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, 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 can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. A steel-concrete hybrid tower, comprising:
a tower foundation, at least a portion of which is disposed below ground;
the tower cylinder body is arranged on the tower cylinder foundation, the tower cylinder body comprises a steel tower cylinder section, a connecting piece and a concrete tower cylinder section which are sequentially connected from top to bottom, and the height of the tower cylinder body in the vertical direction is more than or equal to 150 m; and
the prestressed cable penetrates through the concrete tower drum section, the top end of the prestressed cable is anchored on the connecting piece, the bottom end of the prestressed cable is connected with the tower drum foundation,
the steel-concrete hybrid tower cylinder further comprises an embedded anchor rod, the bottom of the embedded anchor rod is embedded in the tower cylinder foundation, and the bottom end of the prestressed cable is connected with the part, exposed out of the tower cylinder foundation, of the embedded anchor rod.
2. The steel-concrete hybrid tower of claim 1, wherein the maximum transverse dimension of the concrete tower section decreases from bottom to top, and the steel tower section is a straight section.
3. The steel-concrete hybrid tower as claimed in claim 1 or 2, wherein the height of the concrete tower segments in the up-down direction is 70-90 meters.
4. The steel-concrete hybrid tower as claimed in claim 1 or 2, wherein the concrete tower section comprises a plurality of concrete sections sequentially connected in an up-down direction, and the steel tower section comprises a plurality of steel sections sequentially connected in an up-down direction.
5. The steel-concrete hybrid tower according to claim 4, wherein a tower duct is formed on a wall of the concrete section located at the topmost portion, a connecting member duct corresponding to the tower duct is formed on the connecting member, and a top end of the prestressed cable is anchored after passing through the tower duct and the connecting member duct in sequence.
6. The steel-concrete hybrid tower drum as claimed in claim 2, wherein the connecting member is circular, the outer diameter of the top end of the connecting member is smaller than the outer diameter of the bottom end thereof, the height of the connecting member in the up-down direction is not greater than 4 m, the outer diameter of the top end of the connecting member is not greater than 4.8 m, and the outer diameter of the bottom end of the connecting member is not greater than 4.5 m.
7. The steel-concrete hybrid tower as claimed in claim 5, wherein the concrete section at the top most is a cast-in-place concrete section, which is ring-shaped and constructed as an integrally formed piece.
8. The steel-concrete hybrid tower as claimed in claim 4, wherein the concrete segments are of a circular or polygonal cylindrical structure.
9. The steel-concrete hybrid tower as in claim 4, wherein the concrete segments are a multi-piece assembly structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122508354.5U CN216922355U (en) | 2021-10-18 | 2021-10-18 | Steel-concrete hybrid tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122508354.5U CN216922355U (en) | 2021-10-18 | 2021-10-18 | Steel-concrete hybrid tower |
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| CN216922355U true CN216922355U (en) | 2022-07-08 |
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| CN202122508354.5U Active CN216922355U (en) | 2021-10-18 | 2021-10-18 | Steel-concrete hybrid tower |
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- 2021-10-18 CN CN202122508354.5U patent/CN216922355U/en active Active
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