Fabricated segmented prestressed concrete tower drum structure and construction method

Abstract

The invention discloses an assembly type segmented prestressed concrete tower drum structure and a construction method, the assembly type segmented prestressed concrete tower drum structure comprises a drum body formed by splicing a plurality of concrete drum sections in a segmented mode in the height direction, the diameter of the concrete drum sections is reduced in the height direction of the drum body, and the concrete drum sections are formed by splicing a plurality of prefabricated pipe pieces into a whole through bent bolts. The fabricated prestressed concrete structure is adopted, and the bearing capacity, rigidity and crack resistance of the tower drum are remarkably improved. The segmented prestress can change the prestress value gradient of the tower barrels with different heights, the performance design of the tower barrels is achieved to meet the requirements of different scenes, and the fatigue life and the service cycle of the tower barrels are prolonged. Prefabricated pipe pieces are produced in a factory in a standardized mode, prestress is tensioned, on-site overall prestress tensioning is avoided, the construction efficiency and the construction quality are improved, only embedded bolt connection needs to be completed on site, construction is convenient and fast, connection is reliable, and wide application prospects are achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of wind power generation, and in particular relates to an assembled segmented prestressed concrete tower structure and a construction method. Background Art

[0002] The tower is an important part of the wind turbine. It not only supports the entire nacelle and blades to achieve the optimal windward height, but also resists the swing and vibration of the unit to meet the requirements of overall safe operation. As the capacity and height of wind turbines increase, the importance of the tower becomes more and more obvious.

[0003] In recent years, prefabricated concrete towers have been widely used in wind farms at home and abroad due to their high rigidity, convenient construction and high cost-effectiveness. However, in the actual construction process, concrete towers still have certain shortcomings, such as the need to tension prestressed tendons through the height after on-site hoisting, complex construction, and insufficient overall structural firmness. Therefore, it is necessary to develop a new type of tower with superior structure and stable performance, so as to promote the development and application of high tower structures. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide an assembled segmented prestressed concrete tower structure and a construction method, so as to improve the construction efficiency while ensuring or improving its overall structural performance.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] An assembled segmented prestressed concrete tower structure comprises a cylinder body, wherein the cylinder body is composed of a plurality of concrete cylinder segments, each of the concrete cylinder segments is connected into a whole in a circumferential direction by a plurality of prefabricated pipe segments, each of the prefabricated pipe segments comprises a concrete pipe body, and the diameter decreases from bottom to top, an upper corbel is arranged on the top end surface of the concrete pipe body, and a lower corbel is arranged on the bottom end surface, the inner diameter of the upper corbel is the same as the inner diameter of the concrete pipe body, and the outer diameter of the lower corbel is the same as the outer diameter of the concrete pipe body, so that the cross section of the prefabricated pipe segment is in a "Z" shape; in the upper and lower adjacent prefabricated pipe segments, the inner and outer diameters of the lower corbel of the upper prefabricated pipe segment are the same as the inner and outer diameters of the upper corbel of the lower prefabricated pipe segment.

[0007] In one embodiment, the upper corbel includes precast concrete 1, annular steel bar 1 and reinforcing stirrup 1, the lower corbel includes precast concrete 2, annular steel bar 2 and reinforcing stirrup 2, the concrete pipe body includes precast concrete 3, annular steel bar 3, vertical steel bars and prestressed steel bars, wherein the prestressed steel bars are parallel to the vertical steel bars and arranged alternately; the precast concrete 1, precast concrete 2 and precast concrete 3 are cast as one; the vertical steel bars and prestressed steel bars extend from the concrete pipe body to the upper corbel and the lower corbel, wherein in the upper corbel, the inner vertical steel bars overlap with the reinforcing stirrup 1, and the outer vertical steel bars overlap with the reinforcing stirrup 2; in the lower corbel, the inner vertical steel bars overlap with the reinforcing stirrup 2, and the outer vertical steel bars overlap with the reinforcing stirrup 1.

[0008] In one embodiment, the annular steel bar 1, the annular steel bar 2 and the annular steel bar 3 are all multiple rows of steel bars, and are arranged at equal intervals along the height direction of the cylinder;

[0009] The reinforcing stirrup 1 includes a horizontal section 1 and a bent section 1, and the bent section 1 is overlapped on the annular steel bars 1 at both ends of the radial direction;

[0010] The reinforcing stirrup 2 comprises a horizontal section 2 and a bent section 2, and the bent section 2 is overlapped on the annular steel bars 2 at both ends of the radial direction.

[0011] In one embodiment, an upper embedded anchor plate is provided in the upper corbel, a lower embedded anchor plate is provided in the lower corbel, anchor device 1 is provided above the upper embedded anchor plate, and anchor device 2 is provided below the lower embedded anchor plate, the prestressed steel bars pass through the upper embedded anchor plate and the lower embedded anchor plate and reserve a certain length, and are tensioned to the design value by using the pre-tensioning method.

[0012] In one embodiment, arc-shaped bolt grooves are respectively arranged on both sides of the prefabricated pipe segment in the circumferential direction, and two circumferentially adjacent prefabricated pipe segments are circumferentially connected by passing bent bolts through the arc-shaped bolt grooves.

[0013] In one embodiment, the diameter of the cylinder decreases from bottom to top.

[0014] In one embodiment, upper and lower adjacent concrete cylinder sections are installed by vertical seam splicing, and the vertical seam splicing is butt seam splicing or staggered seam splicing.

[0015] In one embodiment, the vertical seam splicing includes circumferentially evenly arranged embedded bolts and bolt holes corresponding to the embedded bolts and a connecting plate; wherein the embedded bolts are arranged on the upper corbel, the bolt holes are arranged on the lower corbel, the connecting plate is arranged on the upper end surface of the lower corbel, the embedded bolts pass through the bolt holes and are fixed to the ends of the connecting plate, thereby realizing the vertical seam splicing of adjacent concrete cylinder sections.

[0016] In one embodiment, the embedded bolts are arranged in the middle area of ​​the upper corbel, pass through the upper embedded anchor plate and are exposed. After the prestressed steel bars are tensioned, the embedded bolts are passed through the upper embedded anchor plate and fixed.

[0017] The present invention also provides a construction method of the assembled segmented prestressed concrete tower, comprising the following steps:

[0018] 1) In the factory, vertical steel bars, circumferential steel bars and reinforcing stirrups are tied, and the prestressed steel bars are passed through the upper and lower embedded anchor plates and tensioned;

[0019] 2) In the factory, pour the precast concrete of each part to complete the processing of the precast segments;

[0020] 3) On site, adjacent prefabricated segments are circumferentially spliced ​​using bent bolts;

[0021] 4) On site, adjacent concrete cylinder sections are vertically connected using embedded bolts.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1) Convenient construction

[0024] The assembled segmented prestressed concrete tower has a simple structure. The entire tower is made up of several concrete tower segments. The segments are connected by several prefabricated segments through bent bolts, and adjacent segments are connected by embedded bolts. The prefabricated segments are standardized and prestressed in the factory to improve construction efficiency and quality. Only bolt connection is required on site, which is convenient for construction and reliable.

[0025] 2) Performance Improvement

[0026] The assembled segmented prestressed concrete tower structure adopts segmented prestressing, which significantly improves the tower's bearing capacity, rigidity and crack resistance. It can also change the prestressing value gradient of the tower at different heights, realize the performance-based design of the tower to meet the needs of different scenarios, and improve the fatigue life and service cycle of the tower. The connection method of embedded bolts inside the bracket is adopted to improve the fatigue resistance and durability of the connection.

[0027] 3) Good economic efficiency

[0028] The assembled segmented prestressed concrete tower structure gives full play to the material properties of prestressed tendons and concrete. The prestressing forces the entire cross-section of the tower concrete to be compressed, which improves the utilization rate of material strength, reduces the labor cost of on-site construction, and adopts piecemeal transportation, which is not limited by the road's capacity, reduces the requirements for lifting tools, improves transportation and lifting efficiency, and has good economic benefits.

[0029] In general, the prefabricated segmented prestressed concrete tower structure adopts segmented prestressing, which significantly improves the tower's bearing capacity, stiffness and crack resistance. It can also change the prestress value gradient of the tower at different heights, realize the performance-based design of the tower to meet the needs of different scenarios, and improve the fatigue life and service life of the tower. Prefabricated segments are standardized and prestressed in the factory to improve construction efficiency and quality. Only bolt connections need to be completed on site. The construction is convenient and the connection is reliable, which has a wide range of engineering application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is an overall schematic diagram of an assembled segmented prestressed concrete tower structure of the present invention.

[0031] Figure 2 It is a schematic diagram of the structure of the prefabricated pipe segment in the present invention.

[0032] Figure 3 It is a schematic cross-sectional view of the upper corbel in the present invention.

[0033] Figure 4 It is a schematic cross-sectional view of the lower corbel in the present invention.

[0034] Figure 5 It is a schematic diagram of the annular connection of the prefabricated pipe segments in the present invention.

[0035] Figure 6 It is a schematic diagram of the vertical connection of the concrete cylinder section in the present invention.

[0036] Figure 7 It is a schematic diagram of butt seam splicing of vertical seam splicing in the present invention.

[0037] Figure 8 It is a schematic diagram of staggered splicing of vertical seam splicing in the present invention. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0040] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0041] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the product is usually placed when in use. These are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0042] The present invention provides an assembled segmented prestressed concrete tower structure as follows Figure 1 As shown, it includes a cylinder 1, which is composed of a number of concrete cylinder sections 2 segmented along the height direction. Each concrete cylinder section 2 is composed of a number of prefabricated pipe segments 3 connected along the circumferential direction. Each prefabricated pipe segment 3 includes a concrete pipe body 5 and an upper corbel 6 at the top and a lower corbel 7 at the bottom.

[0043] In the present invention, the diameter of a single concrete barrel section 2 decreases from bottom to top, and the structural composition of the prefabricated pipe segment 3 makes its cross section present a "Z" shape. Specifically, the upper bracket 6 is arranged on the top end surface of the concrete pipe body 5, and can extend radially away from the center of the concrete barrel section 2. The lower bracket 7 is arranged on the bottom end surface of the prefabricated pipe segment 3, and can extend radially toward the center of the concrete barrel section 2. Specifically, the inner diameter of the upper bracket 6 is the same as the inner diameter of the concrete pipe body 5, and the outer diameter of the lower bracket 7 is the same as the outer diameter of the concrete pipe body 5, so as to form the structure with a "Z" shape in cross section. At the same time, in order to ensure the assembly effect of the upper and lower adjacent concrete barrel sections 2, in the upper and lower adjacent prefabricated pipe segments 3, the inner and outer diameters of the lower bracket 7 of the upper prefabricated pipe segment 3 are the same as the inner and outer diameters of the upper bracket 6 of the lower prefabricated pipe segment 3.

[0044] According to the above structure, the prefabricated pipe segment 3 and even the concrete cylinder segment 2 can be produced in a standardized manner in the factory, which improves the construction efficiency and quality. Only the embedded bolt connection needs to be completed on site. The construction is convenient and the connection is reliable, which has broad application prospects.

[0045] In a further embodiment of the present invention, Figure 2 , Figure 3 and Figure 4 As shown, the concrete pipe body 5 and its upper corbel 6 and lower corbel 7 have the same circumferential length, so that a closed ring-shaped concrete barrel section 2 is obtained after the splicing is completed.

[0046] Among them, the upper corbel 6 includes precast concrete 81, annular steel bars 91 and reinforcing stirrups 111. The annular steel bars 91 are multiple rows of steel bars and are arranged at equal intervals along the height direction of the cylinder 1. Obviously, the height direction of the present invention has a similar meaning to the up-down direction. The only difference is that the height direction refers to the direction perpendicular to the ground, while the up-down direction can have a certain angle with the vertical direction, for example, the direction from low to high (or from high to low) along the side of the cylinder 1. In the radial direction, the annular steel bars 91 can also have multiple layers, that is, each layer has a different distance from the concrete cylinder section 2. The reinforcing stirrups 111 can be multiple in both radial and annular directions, and they and each annular steel bar 91 form the steel frame of the upper corbel 6. The precast concrete 81 casts the steel frame of the upper corbel 6 inside.

[0047] Similarly, the lower corbel 7 includes precast concrete 82, annular steel bars 92 and reinforcing stirrups 112. The annular steel bars 92 are multiple rows of steel bars and are arranged at equal intervals along the height direction of the cylinder 1. In the radial direction, the annular steel bars 92 can also have multiple layers, that is, the distances between each layer and the concrete cylinder section 2 are different. The reinforcing stirrups 112 can be multiple in both radial and annular directions, and they and the annular steel bars 92 form the steel frame of the lower corbel 7. The precast concrete 81 casts the steel frame of the lower corbel 7 inside.

[0048] At the same time, the concrete pipe body 5 includes precast concrete 3 83, circumferential steel bars 3 93, vertical steel bars 10 and prestressed steel bars 16. The circumferential steel bars 3 93 are multiple rows of steel bars and are arranged at equal intervals along the height direction of the cylinder 1. The vertical steel bars 10 are arranged along the height direction, and the prestressed steel bars 16 are also vertical and arranged alternately with the vertical steel bars 10. In the radial direction, the circumferential steel bars 3 93, the vertical steel bars 10, and the prestressed steel bars 16 can have multiple layers, that is, each layer has a different distance from the concrete cylinder section 2.

[0049] In actual engineering, precast concrete one 81, precast concrete two 82 and precast concrete three 83 are an integral cast structure. The vertical steel bars 10 and the prestressed steel bars 16 extend from the concrete pipe body 5 to the upper corbel 6 and the lower corbel 7, wherein in the upper corbel 6, the inner vertical steel bars 10 overlap with the reinforcing stirrup one 111, and the outer vertical steel bars 10 overlap with the reinforcing stirrup two 112; in the lower corbel 7, the inner vertical steel bars 10 overlap with the reinforcing stirrup two 112, and the outer side vertical steel bars 10 overlap with the reinforcing stirrup one 111. The above-mentioned precast pipe segments 3 are produced in a standardized manner in the factory and prestressed to avoid overall prestressing on site. At the same time, due to the use of segmented prestressing, the overall bearing capacity, stiffness and crack resistance of the tower 1 can be significantly improved, and the prestress value gradient of the tower 1 at different heights can also be changed.

[0050] In a further embodiment of the present invention, the reinforcing stirrup 111 includes a horizontal section 121 and a bending section 131, wherein the bending section 131 is bent in the direction of the annular steel bar 91 (specifically, in the up-down direction) and overlapped on the annular steel bar 91 at both ends of the radial direction. Similarly, the reinforcing stirrup 2 112 includes a horizontal section 2 122 and a bending section 2 132, wherein the bending section 2 132 is bent in the direction of the annular steel bar 92 (specifically, in the up-down direction) and overlapped on the annular steel bar 92 at both ends of the radial direction. By designing the reinforcing stirrups of the horizontal section and the bending section, better overall performance can be achieved and the steel structure thereof can be optimized.

[0051] In a further embodiment of the present invention, still referring to Figure 2 , Figure 3 and Figure 4 , an upper embedded anchor plate 14 is arranged in the upper corbel 6, and a lower embedded anchor plate 15 is arranged in the lower corbel 7. The main function of the upper embedded anchor plate 14 and the lower embedded anchor plate 15 is to allow the prestressed steel bar 16 to pass through and anchor. Specifically, an anchor 171 can be arranged above the upper embedded anchor plate 14, and an anchor 2 172 can be arranged below the lower embedded anchor plate 15. The prestressed steel bar 16 passes through the upper embedded anchor plate 14 and the lower embedded anchor plate 15 and a certain length is reserved. The pre-tensioning method is used to tension the prestressed steel bar 16 to the design value, and the anchor 1 171 and the anchor 2 172 are used to anchor the prestressed steel bar 16 at the upper and lower ends, respectively. The upper embedded anchor plate 14 and the lower embedded anchor plate 15 can also further enhance the overall performance.

[0052] In a further embodiment of the present invention, reference Figure 5 and Figure 6 Arc bolt grooves 18 are respectively arranged on both sides of the prefabricated pipe segment 3 in the circumferential direction. The arc bolt groove 18 refers to an arc-shaped inner groove, and its function is to insert the bent bolt 4, and the bent bolt 4 passes through the arc bolt groove 18 to complete the circumferential connection of two circumferentially adjacent prefabricated pipe segments 3.

[0053] In a further embodiment of the present invention, reference Figure 1 , Figure 7 and Figure 8 The upper and lower adjacent concrete cylinder sections 2 are installed by vertical seam splicing 21, and the vertical seam splicing 21 can be a butt seam splicing or a staggered seam splicing. Figure 7 That is seam splicing. Figure 8 That is staggered splicing.

[0054] Continue to refer Figures 2 to 6The vertical seam splicing 21 of the present invention mainly includes embedded bolts 19, bolt holes 20 and connecting plates 22, wherein the number of embedded bolts 19 is multiple, preferably uniformly arranged along the circumferential direction, and they are arranged in the upper corbel 6, and the bolt holes 20 correspond to the embedded bolts 19 one by one, and they are arranged in the lower corbel 7. The connecting plate 22 is arranged on the upper end surface of the lower corbel 7, and the embedded bolts 19 pass through the bolt holes 20 and are fixed to the ends of the connecting plate 22, so as to realize the vertical seam splicing 21 of the adjacent concrete cylinder sections 2. The present invention adopts the connection method of embedded bolts inside the corbel, which can greatly improve the fatigue resistance and durability of the connection.

[0055] Furthermore, the embedded bolts 19 are arranged in the middle area of ​​the upper corbel 6, pass through the upper embedded anchor plate 14 and are exposed. After the prestressed steel bars 16 are tensioned, the embedded bolts 19 are passed through the upper embedded anchor plate 14 and fixed.

[0056] The construction method of the assembled segmented prestressed concrete tower of the present invention mainly comprises the following steps:

[0057] 1. In the factory, the vertical steel bars 10, the annular steel bars and the reinforcing stirrups are tied, the prestressed steel bars 16 are respectively passed through the upper embedded anchor plates 14 and the lower embedded anchor plates 15 in the upper corbels 6 and the lower corbels 7 and exposed, and tensioned by the pre-tensioning method, and the embedded bolts 19 are passed through the upper embedded anchor plates 14 and fixed.

[0058] 2. In the factory, the precast concrete in the concrete pipe body 5, the upper corbel 6 and the lower corbel 7 is poured at the same time to complete the processing of the precast pipe segment 3.

[0059] 3. On site, adjacent prefabricated segments 3 are passed through the arc-shaped bolt grooves 18 by means of bent bolts 4 and fastened to complete the circumferential splicing of adjacent prefabricated segments 3 to obtain a single concrete cylinder section 2. The above operation is repeated to obtain several concrete cylinder sections 2.

[0060] 4. On site, align the lower bracket 7 of the upper concrete cylinder section 2 with the upper bracket 6 of the lower concrete cylinder section 2, pass the embedded bolts 19 of the lower concrete cylinder section 2 through the bolt holes 20 of the upper concrete cylinder section 2, install the connecting plate 22 and tighten the embedded bolts 19 to complete the vertical seam splicing 21 of the adjacent concrete cylinder sections 2.

[0061] In summary, the present invention discloses an assembled segmented prestressed concrete tower structure and a construction method, wherein the prefabricated pipe segment includes a concrete pipe body, an upper corbel and a lower corbel, prestressed tendons are arranged in the concrete pipe body, embedded anchor plates are arranged in the upper corbel and the lower corbel respectively, the upper corbel is also provided with embedded bolts, and adjacent tube segments are connected by embedded bolts. The assembled segmented prestressed concrete tower structure adopts segmented prestressing, which significantly improves the bearing capacity, stiffness and crack resistance of the tower. It can also change the prestress value gradient of the tower at different heights, realize the performance design of the tower to meet the needs of different scenarios, and improve the fatigue life and service cycle of the tower. The prefabricated pipe segments are produced in a standardized manner in the factory and prestressed to improve construction efficiency and quality. Only bolt connection needs to be completed on site. The construction is convenient and the connection is reliable. It has a wide range of engineering application scenarios.

[0062] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An assembled segmented prestressed concrete tower structure, comprising a cylinder (1), wherein the cylinder (1) is segmented by a plurality of concrete cylinder segments (2), each of the concrete cylinder segments (2) is connected into a whole by a plurality of prefabricated segments (3) in a circumferential direction, and the diameter decreases from bottom to top, characterized in that: Each of the prefabricated pipe segments (3) comprises a concrete pipe body (5), an upper bracket (6) is arranged on the top end surface of the concrete pipe body (5), and a lower bracket (7) is arranged on the bottom end surface, the inner diameter of the upper bracket (6) is the same as the inner diameter of the concrete pipe body (5), and the outer diameter of the lower bracket (7) is the same as the outer diameter of the concrete pipe body (5), so that the cross section of the prefabricated pipe segment (3) is in a "Z" shape; in the upper and lower adjacent prefabricated pipe segments (3), the inner and outer diameters of the lower bracket (7) of the upper prefabricated pipe segment (3) are the same as the inner and outer diameters of the upper bracket (6) of the lower prefabricated pipe segment (3).

2. The assembled segmented prestressed concrete tower structure according to claim 1, characterized in that: The upper corbel (6) comprises precast concrete (81), annular steel bar (91) and reinforcing stirrup (111); the lower corbel (7) comprises precast concrete (82), annular steel bar (92) and reinforcing stirrup (112); the concrete pipe body (5) comprises precast concrete (83), annular steel bar (93), vertical steel bar (10) and prestressed steel bar (16); wherein the prestressed steel bar (16) is parallel to the vertical steel bar (10) and arranged in an alternating manner; the precast concrete (81), the precast concrete (91) and the vertical steel bar (10) are arranged in an alternating manner; (82) and precast concrete three (83) are cast in one piece; the vertical steel bars (10) and prestressed steel bars (16) extend from the concrete pipe body (5) to the upper corbel (6) and the lower corbel (7), wherein in the upper corbel (6), the inner vertical steel bars (10) overlap with the reinforcing stirrup one (111), and the outer vertical steel bars (10) overlap with the reinforcing stirrup two (112); in the lower corbel (7), the inner vertical steel bars (10) overlap with the reinforcing stirrup two (112), and the outer vertical steel bars (10) overlap with the reinforcing stirrup one (111).

3. The assembled segmented prestressed concrete tower structure according to claim 2, characterized in that: The annular steel bar one (91), the annular steel bar two (92) and the annular steel bar three (93) are all multiple rows of steel bars, and are arranged at equal intervals along the height direction of the cylinder (1); the reinforcing stirrup one (111) includes a horizontal section one (121) and a bent section one (131), and the bent section one (131) is overlapped on the annular steel bar one (91) at both ends in the radial direction; the reinforcing stirrup two (112) includes a horizontal section two (122) and a bent section two (132), and the bent section two (132) is overlapped on the annular steel bar two (92) at both ends in the radial direction.

4. The assembled segmented prestressed concrete tower structure according to claim 2, characterized in that: An upper embedded anchor plate (14) is arranged in the upper corbel (6), a lower embedded anchor plate (15) is arranged in the lower corbel (7), an anchor 1 (171) is arranged above the upper embedded anchor plate (14), and an anchor 2 (172) is arranged below the lower embedded anchor plate (15), the prestressed steel bar (16) passes through the upper embedded anchor plate (14) and the lower embedded anchor plate (15) and reserves a certain length, and is tensioned to the design value by using the pre-tensioning method.

5. The assembled segmented prestressed concrete tower structure according to claim 2, characterized in that: The prefabricated pipe segments (3) are respectively provided with arc-shaped bolt grooves (18) on both sides in the circumferential direction, and two prefabricated pipe segments (3) adjacent in the circumferential direction are connected in the circumferential direction by means of bent bolts (4) passing through the arc-shaped bolt grooves (18).

6. The assembled segmented prestressed concrete tower structure according to any one of claims 1 to 5, characterized in that: The upper and lower adjacent concrete cylinder sections (2) are installed by vertical seam splicing (21).

7. The assembled segmented prestressed concrete tower structure according to claim 6, characterized in that: The vertical seam splicing (21) is butt seam splicing or staggered seam splicing.

8. The assembled segmented prestressed concrete tower structure according to claim 6, characterized in that: The vertical seam splicing (21) comprises pre-embedded bolts (19) uniformly arranged in a circumferential direction, bolt holes (20) corresponding to the pre-embedded bolts (19), and a connecting plate (22); wherein the pre-embedded bolts (19) are arranged on the upper corbel (6), the bolt holes (20) are arranged on the lower corbel (7), the connecting plate (22) is arranged on the upper end surface of the lower corbel (7), the pre-embedded bolts (19) pass through the bolt holes (20) and are fixed to the ends of the connecting plate (22), thereby realizing the vertical seam splicing (21) of adjacent concrete cylinder sections (2).

9. The assembled segmented prestressed concrete tower structure according to claim 8, characterized in that: The embedded bolts (19) are arranged in the middle area of ​​the upper corbel (6), pass through the upper embedded anchor plate (14) and are exposed. After the prestressed steel bars (16) are tensioned, the embedded bolts (19) pass through the upper embedded anchor plate (14) and are fixed.

10. The construction method of the assembled segmented prestressed concrete tower according to any one of claims 1 to 9, characterized in that: The steps include: 1) In the factory, the vertical steel bars (10), the annular steel bars and the reinforcing stirrups are tied, and the prestressed steel bars (16) are passed through the upper embedded anchor plate (14) and the lower embedded anchor plate (15) and tensioned; 2) In the factory, pouring precast concrete of each part to complete the processing of the precast segments (3); 3) On site, adjacent prefabricated segments (3) are circumferentially spliced ​​together using bent bolts (4); 4) On site, adjacent concrete cylinder sections (2) are vertically connected by embedded bolts (19).

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