Conversion section structure of UHPC wind power tower and wind power tower

Abstract

The utility model discloses a conversion section structure of a UHPC wind power tower, which comprises a UHPC tower tube connecting section, a UHPC tower column connecting section and a UHPC connecting beam, and the UHPC tower column connecting section is fixedly arranged on the periphery of the UHPC tower tube connecting section through the UHPC connecting beam. The utility model further provides a UHPC wind power tower. According to the conversion section structure of the UHPC wind power tower, UHPC with excellent mechanical property and durability is adopted as a main body material for each component part, so that the material consumption is greatly reduced, the self weight is reduced, and hoisting construction is facilitated. The conversion section structure of the UHPC wind power tower is reasonable in structure, compared with a conversion section of a traditional steel structure wind power tower, a large number of on-site tedious welding and bolting construction processes are omitted, construction efficiency can be remarkably improved, construction quality is guaranteed, and later operation and maintenance are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of wind power generation, and in particular relates to an auxiliary connection structure of a wind power tower and a wind power tower. Background Art

[0002] With the advancement of technology and the reduction of costs, wind power generation has become an important part of China's energy structure transformation. In the future, as China's demand for clean energy continues to increase, and with the support of technology and policies, wind power generation is expected to continue to develop rapidly and play a more important role in the energy field. However, at present, medium and low-altitude wind resources have been basically developed. Wind power generation needs to develop to an altitude of more than 200m and increase the capacity of single units. Therefore, large-scale wind turbines are an important development trend in the wind power industry. Large megawatts, long blades and high towers have become one of the important breakthroughs for wind power in the parity market.

[0003] A new type of multi-segment lattice UHPC wind power tower structure proposed in patent application CN116641845A has the advantages of low cost, good stability, fatigue resistance and good durability. It can better solve the series of problems caused by the increase of the tower height of the wind power tower. This new tower structure needs to set a connection conversion section above the lattice segment to connect the lattice segment with the tower above it to ensure the overall force performance of the tower column. The method of this patent is to install a steel conversion section above the lattice segment through a flange structure, and the tower is installed on the steel conversion section through a sleeve with a conical plate. This connection method requires welding or bolting at high altitude, which is difficult to construct, and the construction quality is difficult to guarantee. In addition, the later operating cost of the steel conversion section cannot be controlled. Therefore, it is necessary to improve the traditional structure and design a conversion section structure of a UHPC wind power tower with a reasonable structure and convenient construction and operation. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies and defects mentioned in the above background technology and provide a conversion section structure and a wind tower of a UHPC wind tower which are rationally structured and convenient for construction and operation.

[0005] In order to solve the above technical problems, the technical solution proposed by the utility model is:

[0006] A conversion section structure of a UHPC wind power tower comprises a UHPC tower barrel connecting section, a UHPC tower column connecting section and a UHPC connecting beam. The UHPC tower column connecting section is fixedly arranged on the periphery of the UHPC tower barrel connecting section through the UHPC connecting beam.

[0007] In the conversion section structure of the above-mentioned UHPC wind power tower, preferably, a plurality of upper structure prestressed anchoring racks for prestressed anchoring of the upper structure (such as the tower) above the conversion section structure are provided in the UHPC tower barrel connection section, and a lower structure prestressed anchoring rack for prestressed anchoring of the lower structure (such as the tower) below the conversion section structure is provided on the outer wall of the UHPC tower column connection section. By providing the upper structure prestressed anchoring racks and the lower structure prestressed anchoring racks, the conversion section structure can be anchored to the upper structure and the lower structure respectively.

[0008] In the conversion section structure of the above-mentioned UHPC wind power tower, preferably, the anchoring position of the upper structure prestressed anchoring rack is lower than the anchoring position of the lower structure prestressed anchoring rack. The above-mentioned setting mode is that the anchoring position of the prestressed beam at the upper structure prestressed anchoring rack is located at its lower side, and the anchoring position of the prestressed beam at the lower structure prestressed anchoring rack is located at its upper side. The above-mentioned two anchoring positions for anchoring the upper structure and the lower structure are staggered to eliminate the prestressed blank area and realize the smooth conversion from tower column prestressing to tower barrel prestressing.

[0009] In the conversion section structure of the above-mentioned UHPC wind power tower, preferably, the interior of the UHPC tower connection section is a hollow structure, and two upper and lower diaphragms are provided in the UHPC tower connection section, and the height positions of the upper and lower diaphragms are respectively consistent with the upper and lower edges of the UHPC connecting beam, and an elevator shaft passage is provided in the center of the upper and lower diaphragms. The upper and lower diaphragms are arranged in the UHPC tower connection section to improve the structural strength and rigidity, and can effectively reduce the radial deformation of the tower column. At the same time, the upper and lower diaphragms provide additional construction space, which is convenient for the inspection of the prestressed anchoring condition in the later stage. The height positions of the upper and lower diaphragms are respectively consistent with the upper and lower edges of the UHPC connecting beam, so that the UHPC tower and the UHPC connecting beam can better cooperate in force under the action of large bending moments, which is more conducive to the transmission of force, and can further increase the structural strength and rigidity, so that it can play a role safely and stably at high altitudes. The elevator shaft passage can facilitate the installation, construction and maintenance of equipment.

[0010] In the conversion section structure of the above-mentioned UHPC wind tower, preferably, the upper structure prestressed anchor rack is located between the upper and lower transverse partitions, and the edge of the upper transverse partition is also provided with a plurality of first prestressed beam reserved holes, and the opening position of the first prestressed beam reserved hole is located above the upper structure prestressed anchor rack, and the first prestressed beam reserved hole corresponds to the upper structure prestressed anchor rack one by one. The above-mentioned upper structure prestressed anchor rack is located between the upper and lower transverse partitions to facilitate the prestressed tensioning operation, which can prevent the upper structure prestressed anchor rack from being exposed to the sun and rain for a long time, extend the service life of the anchor structure, and facilitate later maintenance. The first prestressed beam reserved hole can facilitate the passage of the prestressed beam.

[0011] In the above-mentioned conversion section structure of the UHPC wind power tower, preferably, the interior of the UHPC tower column connection section and the UHPC connection beam are both hollow structures, one side of the UHPC connection beam is fixed to the surface of the UHPC tower barrel connection section, and the other side of the UHPC connection beam passes through the wall of the UHPC tower column connection section and extends into the inner cavity of the UHPC tower barrel connection section. The other side of the UHPC connection beam passes through the wall of the UHPC tower column connection section and extends into the inner cavity of the UHPC tower barrel connection section. The structural form in which the UHPC connection beam passes through the UHPC tower column connection section can help strengthen the local strength of the UHPC tower column connection section, improve the overall bending, shear, torsional strength and stiffness, and improve the mechanical properties to adapt to complex wind load environments and meet the mechanical performance requirements of the conversion section structure.

[0012] In the conversion section structure of the above-mentioned UHPC wind power tower, preferably, the lower structure prestressed anchor rack is arranged in the inner cavity of the UHPC connecting beam, and the top surface of the UHPC connecting beam is provided with a prestressed tensioning hole, and the bottom surface of the UHPC connecting beam is provided with a second prestressed beam reserved hole, and the prestressed tensioning hole and the second prestressed beam reserved hole are respectively located above and below the lower structure prestressed anchor rack. The lower structure prestressed anchor rack is arranged in the inner cavity of the UHPC connecting beam, and the lower structure prestressed anchor rack is not exposed to the outside, so as to prevent it from being corroded and falling off, which may cause safety hazards, improve its service life, and also facilitate subsequent maintenance. The second prestressed beam reserved hole facilitates the passage of the prestressed beam. By setting the prestressed tensioning hole, it is convenient to tension the external prestressed tendons, protect and inspect the anchors, and facilitate prestressed construction and operation and maintenance.

[0013] In the conversion section structure of the above-mentioned UHPC wind power tower, preferably, the upper edge of the inner cavity of the UHPC tower connecting section is provided with a plurality of tower segment prestressed connection tooth blocks for prestressed connection between the UHPC tower connecting section and the upper tower segment, and the tower segment prestressed connection tooth blocks are located above the upper transverse partition; the inner cavity of the UHPC tower column connecting section is provided with tower column segment prestressed connection tooth blocks for prestressed connection between the UHPC tower column connecting section and the lower tower column segment. The tower segment prestressed connection tooth blocks are used to connect the UHPC tower connecting section with the tower above it, so as to realize the connection between the conversion section structure and the tower above it. The tower column segment prestressed connection tooth blocks are used for the UHPC tower column connecting section and the tower below it, so as to realize the connection between the conversion section structure and the tower below it. The above-mentioned tower segment prestressed connection teeth and tower column segment prestressed connection teeth can both be anchored with low-shrinkage prestressed steel strands (for example, the shrinkage is not more than 1mm). The small shrinkage prestress has the following advantages: reducing the shrinkage, thereby ensuring the consolidation effect and durability; strong tensile strength, which can ensure the safety and stability of the project; and having high corrosion resistance and durability.

[0014] In the conversion section structure of the above-mentioned UHPC wind tower, preferably, the UHPC tower connection section is a hollow cylindrical thin-walled structure with a variable cross-section, and the wall thickness is 0.1-0.4m, and the cross-section of the UHPC tower connection section gradually decreases from bottom to top, and the cross-section is circular or polygonal. In the utility model, due to the high mechanical strength of UHPC, the UHPC tower connection section using UHPC as the main material can be a hollow cylindrical thin-walled structure, which can reduce weight. The UHPC tower connection section adopts a variable cross-section hollow cylindrical thin-walled structure, which can be consistent with the cross-section change of the tower structure above, maintain the integrity of the structure, and facilitate the arrangement of prestress. The above-mentioned wall thickness setting can ensure mechanical strength while reducing the weight of the conversion section structure.

[0015] In the conversion section structure of the above-mentioned UHPC wind power tower, preferably, the UHPC tower column connection section is a hollow cylindrical thin-walled structure, and the UHPC tower column connection section is vertically provided with multiple roots, which are evenly distributed around the vertical center line of the UHPC wind power tower, and the cross-section of the UHPC tower column connection section is circular or polygonal, with a wall thickness of 0.1-0.4m and a cross-sectional outer diameter of 2-4m. Due to the high mechanical strength of UHPC, the UHPC tower column connection section using UHPC as the main material adopts a hollow thin-walled structure, which can reduce weight. The dimensions of the UHPC tower column connection section are all protected and consistent, matching the tower column segments below, and the number of UHPC tower column connection sections matches the number of tower columns below, for example, it can be 3 or 4, because common wind power towers mostly adopt three-limb column and four-limb column structures, and the UHPC tower column connection section needs to match them. The above-mentioned wall thickness setting can ensure mechanical strength while reducing the weight of the conversion section structure.

[0016] In the conversion section structure of the above-mentioned UHPC wind turbine tower, preferably, the UHPC connecting beam is a hollow thin-walled structure, the wall thickness of the UHPC connecting beam is 0.1-0.4m, and the cross section is rectangular. Due to the high mechanical strength of UHPC, the UHPC connecting beam using UHPC as the main material adopts a hollow thin-walled structure to reduce weight. The above-mentioned wall thickness setting can ensure mechanical strength while reducing the weight of the conversion section structure.

[0017] As a general technical concept, the utility model also provides a UHPC wind power tower, including an upper structure and a lower structure, wherein the upper structure includes an upper tower segment, and the lower structure includes a lower tower column segment, the upper structure and the lower structure are connected by the above-mentioned conversion section structure, the top of the lower tower column segment is connected to the UHPC tower column connecting section, and the bottom of the upper tower segment is connected to the UHPC tower connecting section.

[0018] The utility model also provides a construction method of a UHPC wind power tower, comprising the following steps:

[0019] S1: prefabricate the conversion section structure, so that the UHPC tower tube connection section, the UHPC tower column connection section and the UHPC connection beam are integrally cast;

[0020] S2: construct the lower structure, then hoist and install the conversion section structure to the top of the lower tower column segment at the top of the lower structure, connect the top of the lower tower column segment to the UHPC tower column connecting section, tension the prestress in the prestressed connecting tooth block of the tower column segment, and complete the connection between the conversion section structure and the lower structure;

[0021] S3: tensioning the prestressed beams in the prestressed anchor rack of the lower structure, so that the lower structure and the conversion section tower column are in a relatively high compressive stress state;

[0022] S4: hoisting and installing the upper tower segment at the bottom layer of the upper structure onto the transition section structure, connecting the bottom of the upper tower segment to the UHPC tower connection section, tensioning the prestress in the prestressed connection tooth block of the tower segment, completing the connection between the transition section structure and the upper tower segment, and then sequentially constructing other upper tower segments to complete the construction of the upper structure;

[0023] S5: tensioning the prestressed strands in the prestressed anchor rack of the upper structure, so that the upper structure and the conversion section as a whole are in a relatively high compressive stress state, and the construction is completed.

[0024] In the utility model, the UHPC tower tube connection section, the UHPC tower column connection section and the UHPC connection beam are all made of UHPC material with excellent mechanical properties. The axial tensile strength of the UHPC material is above 7MPa and the compressive strength is above 120MPa.

[0025] Compared with the prior art, the advantages of the utility model are:

[0026] 1. The conversion section structure of the UHPC wind power tower of the utility model includes a UHPC tower tube connection section, a UHPC tower column connection section and a UHPC connection beam. Each component adopts UHPC with excellent mechanical properties and durability as the main material, which greatly reduces the material consumption, reduces the dead weight, and facilitates the hoisting construction.

[0027] 2. The conversion section structure of the UHPC wind turbine tower of the utility model is reasonable in structure. Compared with the conversion section of the traditional steel structure wind turbine tower, it gets rid of a large number of cumbersome on-site welding and bolting construction processes, which can significantly improve construction efficiency, ensure construction quality, and reduce later operation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 This is a three-dimensional schematic diagram of the conversion section structure of the UHPC wind tower in Example 1.

[0030] Figure 2 It is a semi-section and semi-erection schematic diagram of the conversion section structure of the UHPC wind tower in Example 1.

[0031] Figure 3 The plan view of the conversion section structure of the UHPC wind power tower in Example 1 (i.e. Figure 1 ).

[0032] Figure 4 This is a schematic diagram of the structure in which the conversion section structure of the UHPC wind tower in Example 1 is connected to the upper tower segment.

[0033] Figure 5 This is a three-dimensional schematic diagram of the UHPC tower connection section in Example 1.

[0034] Figure 6 This is a three-dimensional schematic diagram of the combination of a single UHPC tower column connection section and a UHPC connection beam in Example 1.

[0035] Figure 7 This is a three-dimensional schematic diagram of the diaphragm in Example 1.

[0036] Figure 8 This is a structural schematic diagram of the UHPC wind tower in Example 1, in which the conversion section structure is connected to the upper tower segment through the tower segment prestressed connection tooth block.

[0037] Fig. 9 This is a structural schematic diagram of the conversion section structure of the UHPC wind power tower in Example 1 being connected to the lower tower column segment through the tower column segment prestressed connecting tooth block.

[0038] Fig.10 This is a three-dimensional schematic diagram of the conversion section structure of the UHPC wind tower in Example 2.

[0039] Fig.11 This is a schematic diagram of the structure of the UHPC wind tower in Example 1-Example 2.

[0040] Legend

[0041] 1. UHPC tower connection section; 11. Transverse diaphragm; 13. Elevator shaft passage; 14. Prestressed connection tooth block of tower segment; 15. Prestressed anchor rack of upper structure; 2. UHPC tower column connection section; 21. Prestressed connection tooth block of tower column segment; 22. Prestressed anchor rack of lower structure; 3. UHPC connecting beam; 4. Prestressed tensioning hole; 5. Reserved channel for the first prestressed beam; 6. Reserved channel for the second prestressed beam; 7. Upper structure; 71. Upper tower segment; 8. Lower structure; 81. Lower tower segment; 9. Prestressed beam. DETAILED DESCRIPTION

[0042] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively and carefully below in conjunction with the accompanying drawings and preferred embodiments of the specification, but the protection scope of the present invention is not limited to the following specific embodiments.

[0043] It should be noted that when an element is described as being "fixed, fixed, connected or connected to" another element, it can be directly fixed, fixed, connected or connected to the other element, or it can be indirectly fixed, fixed, connected or connected to the other element through other intermediate connectors.

[0044] Unless otherwise defined, all professional terms used below have the same meanings as those generally understood by those skilled in the art. The professional terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the scope of protection of the present utility model.

[0045] Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present invention can be purchased from the market or prepared by existing methods.

[0046] Embodiment 1:

[0047] like Figure 1 As shown, the conversion section structure of the UHPC wind power tower of this embodiment includes a UHPC tower connecting section 1, a UHPC tower column connecting section 2 and a UHPC connecting beam 3. The UHPC tower column connecting section 2 is fixed to the periphery of the UHPC tower connecting section 1 through the UHPC connecting beam 3.

[0048] like Figure 2 , Figure 4 As shown, in this embodiment, a plurality of upper structure prestressed anchoring racks 15 for prestressed anchoring of the upper structure 7 above the conversion section structure are provided in the UHPC tower tube connection section 1, and a lower structure prestressed anchoring rack 22 for prestressed anchoring of the lower structure 8 below the conversion section structure is provided on the outer wall of the UHPC tower column connection section 2. The anchoring position of the upper structure prestressed anchoring rack 15 is lower than the anchoring position of the lower structure prestressed anchoring rack 22.

[0049] like Figure 4 , Figure 5 , Figure 7 As shown, in this embodiment, the interior of the UHPC tower connecting section 1 is a hollow structure, and two upper and lower transverse partitions 11 are provided in the UHPC tower connecting section 1. The height positions of the upper and lower transverse partitions 11 are respectively consistent with the upper and lower edges of the UHPC connecting beam 3, and an elevator shaft passage 13 is provided in the center of the upper and lower transverse partitions 11.

[0050] like Figure 3 , Figure 5 As shown, in this embodiment, the upper structure prestressed anchor rack 15 is located between the upper and lower transverse partitions 11, and the edge of the upper transverse partition 11 is also provided with a plurality of first prestressed beam reserved channels 5, and the opening position of the first prestressed beam reserved channels 5 is located above the upper structure prestressed anchor rack 15, and the first prestressed beam reserved channels 5 and the upper structure prestressed anchor rack 15 correspond one to one.

[0051] like Figure 2 , Figure 6 As shown, in this embodiment, the interiors of the UHPC tower column connecting section 2 and the UHPC connecting beam 3 are both hollow structures, one side of the UHPC connecting beam 3 is fixed to the surface of the UHPC tower barrel connecting section 1, and the other side of the UHPC connecting beam 3 passes through the wall of the UHPC tower column connecting section 2 and extends into the inner cavity of the UHPC tower barrel connecting section 1.

[0052] like Figure 2 , Figure 6As shown, in this embodiment, the lower structure prestressed anchor rack 22 is arranged in the inner cavity of the UHPC connecting beam 3, and the top surface of the UHPC connecting beam 3 is provided with a prestressed tensioning hole 4, and the bottom surface of the UHPC connecting beam 3 is provided with a second prestressed beam reserved channel 6, and the prestressed tensioning hole 4 and the second prestressed beam reserved channel 6 are respectively located above and below the lower structure prestressed anchor rack 22.

[0053] like Figure 2 , Figure 4 , Figure 8 , Fig. 9 As shown, in this embodiment, a plurality of tower segment prestressed connection tooth blocks 14 for prestressed connection between the UHPC tower segment 1 and the upper tower segment 71 are provided at the upper edge of the inner cavity of the UHPC tower connection segment 1, and a tower segment prestressed connection tooth block 21 for prestressed connection between the UHPC tower segment 2 and the lower tower segment 81 is provided in the inner cavity of the UHPC tower column connection segment 2. The tower column segment prestressed connection tooth blocks 21 and the tower segment prestressed connection tooth blocks 14 both use low-retracted prestressed steel strand anchors with low retracted prestress.

[0054] In this embodiment, the UHPC tower connection section 1 is a variable cross-section hollow cylindrical thin-walled structure with a wall thickness of 0.1-0.4m (any range, such as 0.1m, 0.2m, 0.3m, 0.4m, etc.), and the cross section of the UHPC tower connection section 1 gradually decreases from bottom to top, and the cross section is circular, and the outer diameter of the cross section changes from 2.8-8.8m at the bottom to 2-8m at the top. At this time, the diaphragm 11 is annular. In other embodiments, the variable cross-section hollow cylindrical thin-walled structure can also be polygonal. Three UHPC tower column connection sections 2 are vertically arranged, evenly distributed around the vertical center line of the UHPC wind power tower, and the sizes of the three UHPC tower column connection sections 2 are consistent; the cross section of the UHPC tower column connection section 2 is circular, the wall thickness is 0.1-0.4m (any within the above range, such as 0.1m, 0.2m, 0.3m, 0.4m, etc.), and the outer diameter of the cross section is 2-4m (any within the above range, such as 2m, 3m, 4m, etc.); the wall thickness of the UHPC connecting beam 3 is 0.1-0.4m (any within the above range, such as 0.1m, 0.2m, 0.3m, 0.4m, etc.), the cross section is rectangular, the cross-sectional width is 1-3m, and the cross-sectional height is variable, changing from 4-6m to 5-7m from bottom to top. In other embodiments, the hollow cylindrical thin-walled structure can also be polygonal.

[0055] like Fig.11As shown, the UHPC wind tower of this embodiment includes an upper structure 7 and a lower structure 8, the upper structure 7 includes an upper tower segment 71, the lower structure 8 includes a lower tower column segment 81, the upper structure 7 and the lower structure 8 are connected by the above-mentioned conversion section structure, the top of the lower tower column segment 81 is connected to the UHPC tower column connecting segment 2, and the bottom of the upper tower segment 71 is connected to the UHPC tower connecting segment 1.

[0056] The construction method of the UHPC wind power tower of this embodiment includes the following steps:

[0057] S1: prefabricate the conversion section structure, so that the UHPC tower tube connection section 1, the UHPC tower column connection section 2 and the UHPC connection beam 3 are integrally cast;

[0058] S2: construct the lower structure 8, then hoist and install the conversion section structure to the top of the lower tower column segment 81 at the top of the lower structure 8, connect the top of the lower tower column segment 81 to the UHPC tower column connecting section 2, tension the prestressed beam 9 in the tower column segment prestressed connecting tooth block 21, and complete the connection between the conversion section structure and the lower structure 8;

[0059] S3: tensioning the prestressed beam 9 in the prestressed anchor rack 22 of the lower structure, so that the lower structure 8 and the conversion section tower column are in a relatively high compressive stress state;

[0060] S4: hoist and install the upper tower segment 71 at the bottom layer of the upper structure 7 onto the transition section structure, connect the bottom of the upper tower segment 71 to the UHPC tower connection section 1, tension the prestressed beam 9 in the tower segment prestressed connection tooth block 14, complete the connection between the transition section structure and the upper tower segment 71, and then sequentially construct other upper tower segments 71 to complete the construction of the upper structure 7;

[0061] S5: tensioning the prestressed strands 9 in the prestressed anchor racks 15 of the upper structure, so that the upper structure 7 and the conversion section as a whole are in a relatively high compressive stress state, ie the construction is completed.

[0062] Embodiment 2:

[0063] The conversion section structure of the UHPC wind power tower in this embodiment is basically the same as that in Embodiment 1, except that Fig.10 As shown, in this embodiment, there are four UHPC tower column connecting sections 2, which are vertically distributed around the vertical center line of the wind tower. The cross-section of a single UHPC tower column connecting section 2 adopts a hollow thin-walled circular cross-section, and the sizes of the four UHPC tower column connecting sections 2 are consistent.

Claims

1. A conversion section structure of a UHPC wind power tower, characterized in that: The invention comprises a UHPC tower connecting section (1), a UHPC tower column connecting section (2) and a UHPC connecting beam (3); the UHPC tower column connecting section (2) is fixed to the periphery of the UHPC tower connecting section (1) via the UHPC connecting beam (3).

2. The conversion section structure of the UHPC wind power tower according to claim 1 is characterized in that: The UHPC tower barrel connection section (1) is provided with a plurality of upper structure prestressed anchoring racks (15) for prestressed anchoring of an upper structure (7) above the conversion section structure, and the outer wall of the UHPC tower column connection section (2) is provided with lower structure prestressed anchoring racks (22) for prestressed anchoring of a lower structure (8) below the conversion section structure.

3. The conversion section structure of the UHPC wind power tower according to claim 2 is characterized in that: The anchoring position of the upper structure prestressed anchoring rack (15) is lower than the anchoring position of the lower structure prestressed anchoring rack (22).

4. The conversion section structure of the UHPC wind power tower according to claim 2, characterized in that: The interior of the UHPC tower connection section (1) is a hollow structure. The UHPC tower connection section (1) is provided with two upper and lower transverse partitions (11). The height positions of the upper and lower transverse partitions (11) are respectively consistent with the upper and lower edges of the UHPC connection beam (3).

5. The conversion section structure of the UHPC wind power tower according to claim 4, characterized in that: The upper structure prestressed anchoring rack (15) is located between the upper and lower transverse partitions (11), and the edge of the upper transverse partition (11) is also provided with a plurality of first prestressed beam reserved holes (5), and the opening position of the first prestressed beam reserved holes (5) is located above the upper structure prestressed anchoring rack (15), and the first prestressed beam reserved holes (5) and the upper structure prestressed anchoring rack (15) correspond one to one.

6. The conversion section structure of the UHPC wind power tower according to claim 2, characterized in that: The interiors of the UHPC tower column connection section (2) and the UHPC connection beam (3) are both hollow structures; one side of the UHPC connection beam (3) is fixedly arranged on the surface of the UHPC tower barrel connection section (1); the other side of the UHPC connection beam (3) passes through the wall surface of the UHPC tower column connection section (2) and extends into the inner cavity of the UHPC tower barrel connection section (1).

7. The conversion section structure of the UHPC wind power tower according to claim 6, characterized in that: The lower structure prestressed anchoring rack (22) is arranged in the inner cavity of the UHPC connecting beam (3), and the top surface of the UHPC connecting beam (3) is provided with a prestressed tensioning hole (4), and the bottom surface of the UHPC connecting beam (3) is provided with a second prestressed beam reserved channel (6), and the prestressed tensioning hole (4) and the second prestressed beam reserved channel (6) are respectively located above and below the lower structure prestressed anchoring rack (22).

8. The conversion section structure of a UHPC wind power tower according to any one of claims 1 to 7, characterized in that: The upper edge of the inner cavity of the UHPC tower connecting section (1) is provided with a plurality of tower segment prestressed connection tooth blocks (14) for prestressed connection between the UHPC tower connecting section (1) and an upper tower segment (71), and the inner cavity of the UHPC tower column connecting section (2) is provided with a tower column segment prestressed connection tooth block (21) for prestressed connection between the UHPC tower column connecting section (2) and a lower tower segment (81).

9. The conversion section structure of a UHPC wind power tower according to any one of claims 1 to 7, characterized in that: The UHPC tower connection section (1) is a hollow cylindrical thin-walled structure with a variable cross-section, and the wall thickness is 0.1-0.4 m. The cross section of the UHPC tower connection section (1) gradually decreases from bottom to top, and the cross section is circular or polygonal. The UHPC tower column connecting section (2) is a hollow cylindrical thin-walled structure. A plurality of UHPC tower column connecting sections (2) are vertically arranged and evenly distributed around the vertical center line of the UHPC wind power tower. The cross section of the UHPC tower column connecting section (2) is circular or polygonal, with a wall thickness of 0.1-0.4 m and an outer diameter of the cross section of 2-4 m. The UHPC connecting beam (3) is a hollow thin-walled structure with a wall thickness of 0.1-0.4 m and a rectangular cross section.

10. A UHPC wind power tower, comprising an upper structure (7) and a lower structure (8), characterized in that: The upper structure (7) includes an upper tower segment (71), and the lower structure (8) includes a lower tower column segment (81). The upper structure (7) and the lower structure (8) are connected via a conversion section structure according to any one of claims 1 to 9, the top of the lower tower column segment (81) is connected to the UHPC tower column connecting segment (2), and the bottom of the upper tower segment (71) is connected to the UHPC tower connecting segment (1).

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