Anti-gravity and anti-lateral-force separation type wind power hybrid tower drum structure

Abstract

The invention discloses an anti-gravity and anti-lateral-force separation type wind power hybrid tower tube structure which is formed by vertically stacking and connecting a plurality of tube rings, each tube ring is of an axisymmetric hollow closed tube-shaped structure, and each tube ring is formed by alternately connecting a plurality of anti-gravity tube pieces and a plurality of anti-lateral tube pieces; the anti-gravity barrel pieces and the anti-lateral barrel pieces of two adjacent barrel rings are correspondingly connected up and down to form a tower barrel structure in which the anti-gravity barrel pieces and the anti-lateral barrel pieces are continuous in the height direction of the tower barrel; the anti-gravity cylinder piece is located at the corner of the section of the cylinder ring, the two sides of the anti-lateral cylinder piece are connected with the anti-gravity cylinder piece, and the anti-gravity cylinder piece is made of a prefabricated reinforced concrete member or a prefabricated steel plate concrete member; the anti-lateral cylinder piece is made of a corrugated steel plate component. The advantages of concrete and steel are fully utilized, and the anti-gravity cylinder piece and the anti-lateral-stiffness cylinder piece are constructed, so that the anti-gravity structure and the anti-lateral-stiffness structure achieve decoupling control, and the anti-gravity structure and the anti-lateral-stiffness structure work efficiently and cooperatively.

Description

Technical Field

[0001] The invention relates to the technical field of wind power generation, and in particular to a wind power hybrid tower structure with separated anti-gravity and anti-lateral force functions. Background Art

[0002] Wind turbine tower is an important supporting structure of wind turbine generator set, usually a tall columnar structure made of steel or concrete. The wind turbine tower is mainly used to support wind turbine units and wind turbine blades. It mainly bears the vertical gravity load of wind turbine units and wind turbine blades and the tower's own weight, and mainly bears wind load laterally.

[0003] Existing wind turbine towers can be divided into all-steel towers and all-concrete towers according to different construction materials. Among them, the all-steel tower has light weight and low damping, but due to its low natural frequency, it is easy to resonate with the wind turbine; and under the continuous action of alternating loads such as wind loads and vibration loads, it is easy to produce fatigue damage and has weak anti-fatigue performance. The all-concrete tower has large damping and high lateral stiffness, but its own weight is large and the construction height is limited. Therefore, there is an urgent need for a tower structure that can coordinate the contradiction between the tower's own weight and lateral stiffness. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a wind power hybrid tower structure with separated anti-gravity and anti-lateral force, which fully utilizes the advantages of concrete and steel to construct anti-gravity cylinder segments and anti-lateral cylinder segments, so that the anti-gravity structure and the anti-lateral stiffness structure can be decoupled and controlled, and the anti-gravity structure and the anti-lateral stiffness structure can work together efficiently, thus solving the contradiction that the weight of the traditional tower will increase significantly while adjusting the anti-lateral stiffness.

[0005] In order to achieve the above-mentioned object, the present invention provides a wind power hybrid tower structure with anti-gravity and anti-lateral force separation, wherein the tower structure is formed by stacking and connecting a plurality of cylinder rings, wherein the cylinder rings are axially symmetrical hollow closed cylinder structures, and the cylinder rings are formed by alternately connecting a plurality of anti-gravity cylinder sheets and a plurality of anti-lateral cylinder sheets;

[0006] The anti-gravity cylinder segments and anti-side cylinder segments of two adjacent cylinder rings are connected correspondingly up and down to form a tower structure in which the anti-gravity cylinder segments and the anti-side cylinder segments are continuous along the height direction of the tower; the anti-gravity cylinder segments are located at the corners of the cylinder ring cross section, and the two sides of the anti-side cylinder segments in the height direction are connected to the corresponding anti-gravity cylinder segments, and the anti-gravity cylinder segments are made of prefabricated reinforced concrete components or prefabricated steel plate concrete components; the anti-side cylinder segments are made of corrugated steel plate components.

[0007] Furthermore, the cross-sectional shape of the anti-gravity tube sheet is arc-shaped or angled.

[0008] Furthermore, the corrugated steel plate component adopts a transverse rib corrugated steel plate or a vertical rib corrugated steel plate, and its waveform is any one of a sine wave, a trapezoid and a rectangle.

[0009] Furthermore, the vertical joints between the anti-gravity cylinder segments and the anti-side cylinder segments are connected by end plate bolts or grouting, and the horizontal joints of the anti-gravity cylinder segments of two adjacent cylinder rings are connected by either or both of post-tensioned prestressed tendon connections and bolt connections; the horizontal joints of the anti-side cylinder segments of two adjacent cylinder rings are connected by bolts.

[0010] Furthermore, the post-tensioned prestressed tendons are internal post-tensioned prestressed tendons or external post-tensioned prestressed tendons, and the post-tensioned prestressed tendons run through the entire height of the tower structure.

[0011] Furthermore, the cross-sectional shape of the tube ring is any one of a chamfered triangle, a chamfered quadrilateral, a rounded-end rectangle and a hexagon, and the structure of the tower tube is a columnar body with equal thickness at the top and bottom or a conical body with a thick bottom and a thin top.

[0012] Furthermore, the concrete strength grade of the anti-gravity cylinder segment is not less than C60.

[0013] Beneficial effects of the present invention:

[0014] 1. The tower structure of the present invention adopts a mixed tube ring form of concrete and steel, and its anti-gravity tube segments adopt reinforced concrete or steel plate concrete, making full use of the advantage of high compressive strength of concrete to bear the vertical effects of the tower and wind turbine set; the anti-lateral tube segments adopt corrugated steel plates, and the advantages of large out-of-plane stiffness, non-local buckling and small dead weight of the corrugated steel plates are used to connect the anti-gravity tube segments, which do not bear vertical loads themselves and are only used to adjust the moment of inertia of the tower, so as to realize convenient adjustment of the tower's anti-lateral stiffness without significantly increasing the tower's dead weight, and meet the anti-lateral stiffness requirements of towers of different heights.

[0015] 2. The tower structure of the present invention not only allows the anti-gravity structure and the anti-lateral stiffness structure to achieve decoupling control, but also ensures that the two work together efficiently, which can well solve the contradiction that the tower weight will also increase significantly when the anti-lateral stiffness is adjusted in the traditional tower. In addition, the vertical stiffness of the corrugated steel plate is small, which is conducive to improving the effectiveness of the prestress of the anti-gravity cylinder segment and enhancing the integrity of the anti-gravity cylinder segment.

[0016] 3. The anti-gravity tube segments and the anti-side tube segments of the present invention are made of concrete and steel respectively, making full use of the respective advantages of concrete and steel, so that the natural frequency of the tower is easy to adjust, the damping is large, and the vibration control of the tower is convenient, combining the advantages of all-steel tower and concrete tower.

[0017] 4. The anti-gravity cylinder segments of the present invention can be produced using standard modules. By adjusting the length of the steel structure anti-side cylinder segments, the cross-sectional changes of the tower along the height can be achieved, which significantly reduces the production cost. The lightweight anti-side cylinder segments can also reduce hoisting, reduce construction costs, and improve construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A partial three-dimensional diagram of the tower structure of Example 1 of the present invention.

[0019] Figure 2 A plan view of the tower structure of Example 1 of the present invention.

[0020] Figure 3 The present invention Figure 2 Section view along section line aa.

[0021] Figure 4 A partial three-dimensional diagram of the tower structure of Example 2 of the present invention.

[0022] Figure 5 A plan view of the tower structure of Example 2 of the present invention.

[0023] Figure 6 A plan view of the tower structure of Example 3 of the present invention.

[0024] In the figure: 1. Anti-gravity cylinder; 2. Anti-side cylinder; 3. High-strength bolts; 4. Post-tensioning prestressed tendons. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0026] The invention discloses a wind power hybrid tower structure capable of resisting gravity and resisting lateral force separately.

[0027] Embodiment 1:

[0028] Reference Figure 1 and Figure 2 A wind power hybrid tower structure with separated anti-gravity and anti-lateral force functions is disclosed. The tower structure is formed by stacking and connecting a number of cylinder rings, each of which is an axisymmetric hollow closed cylinder structure. In this embodiment, the cross-sectional shape of the cylinder ring is a chamfered quadrilateral, which is formed by alternatingly connecting four anti-gravity cylinder sheets 1 and four anti-lateral cylinder sheets 2.

[0029] The anti-gravity cylinder segments 1 and the anti-side cylinder segments 2 of two adjacent cylinder rings are connected correspondingly up and down, forming a tower structure in which the anti-gravity cylinder segments 1 and the anti-side cylinder segments 2 are continuous along the height direction of the tower. The structural form of the tower is a columnar body with equal thickness at the top and bottom. The anti-gravity cylinder segment 1 is located at the corner of the cylinder ring section, and the cross-sectional shape is an arc; the anti-gravity cylinder segment 1 is made of prefabricated reinforced concrete components, and the concrete is ultra-high performance concrete with a concrete strength grade of C120. The anti-side cylinder segment 2 is a straight line, made of a transverse rib corrugated steel plate component; the waveform of the transverse rib corrugated steel plate component is a trapezoidal wave.

[0030] Reference Figure 3 The vertical joints between the anti-gravity cylinder segments 1 and the anti-side cylinder segments 2 are connected by end plates and high-strength bolts 3; the horizontal joints between the anti-gravity cylinder segments 1 of two adjacent cylinder rings are connected by post-tensioned prestressed tendons 4 and high-strength bolts 3, and the post-tensioned prestressed tendons 4 are specifically post-tensioned prestressed tendons 4 in the body; the post-tensioned prestressed tendons 4 run through the full height of the tower structure. The horizontal joints between the anti-side cylinder segments 2 of two adjacent cylinder rings are connected by high-strength bolts 3; the horizontal joints between the anti-gravity cylinder segments 1 and the anti-side cylinder segments 2 of two adjacent cylinder rings are flush.

[0031] Embodiment 2:

[0032] Reference Figure 4 and Figure 5 A wind power hybrid tower structure with separated anti-gravity and anti-lateral force, the tower structure is formed by a plurality of cylinder rings stacked and connected up and down, the cylinder rings are axisymmetric hollow closed cylinder structures, the cross-sectional shape of the cylinder rings in this embodiment is a round-end rectangle, which is formed by four anti-gravity cylinder sheets 1 and two anti-lateral cylinder sheets 2 connected to each other, the two anti-gravity cylinder sheets 1 are adjacent to form a semicircular end portion of the cylinder ring, and the anti-lateral cylinder sheet 2 is connected between the two semicircular ends.

[0033] The anti-gravity cylinder segments 1 and the anti-side cylinder segments 2 of two adjacent cylinder rings are connected correspondingly up and down, forming a tower structure in which the anti-gravity cylinder segments 1 and the anti-side cylinder segments 2 are continuous along the height direction of the tower. The structural form of the tower is a columnar body with equal thickness at the top and bottom. The anti-gravity cylinder segment 1 is located at the corner of the cylinder ring section, and the cross-sectional shape is an arc; the anti-gravity cylinder segment 1 is made of prefabricated reinforced concrete components, and the concrete is ultra-high performance concrete with a concrete strength grade of C120. The anti-side cylinder segment 2 is a straight line, made of a transverse rib corrugated steel plate component; the waveform of the transverse rib corrugated steel plate component is a trapezoidal wave.

[0034] The vertical joints between the anti-gravity cylinder segments 1 and the anti-side cylinder segments 2 are connected by end plates and high-strength bolts 3; the horizontal joints between the anti-gravity cylinder segments 1 of two adjacent cylinder rings are connected by post-tensioned prestressed tendons 4 and high-strength bolts 3, and the post-tensioned prestressed tendons 4 are specifically external post-tensioned prestressed tendons 4; the post-tensioned prestressed tendons 4 run through the full height of the tower structure. The horizontal joints between the anti-side cylinder segments 2 of two adjacent cylinder rings are connected by high-strength bolts 3; the horizontal joints between the anti-gravity cylinder segments 1 and the anti-side cylinder segments 2 of two adjacent cylinder rings are flush.

[0035] Embodiment 3:

[0036] Reference Figure 6 A wind power hybrid tower structure with separated anti-gravity and anti-lateral force functions is disclosed. The tower structure is formed by stacking a number of cylinder rings, each of which is an axisymmetric hollow closed cylinder structure. In this embodiment, the cross-sectional shape of the cylinder ring is a hexagon, which is formed by connecting 6 anti-gravity cylinder segments 1 and 6 anti-lateral cylinder segments 2.

[0037] The anti-gravity cylinder segments 1 and the anti-side cylinder segments 2 of two adjacent cylinder rings are connected correspondingly up and down, forming a tower structure in which the anti-gravity cylinder segments 1 and the anti-side cylinder segments 2 are continuous along the height direction of the tower. The structural form of the tower is a columnar body with equal thickness at the top and bottom. The anti-gravity cylinder segment 1 is located at the corner of the cylinder ring section, and the cross-sectional shape is an angled shape; the anti-gravity cylinder segment 1 is made of prefabricated steel plate concrete components, and the prefabricated steel plate concrete is an inner single steel plate concrete, and the concrete is ultra-high performance concrete, and the concrete strength grade is C100. The anti-side cylinder segment 2 is a straight line, and is made of a transverse rib corrugated steel plate component; the waveform of the transverse rib corrugated steel plate component is a trapezoidal wave.

[0038] The vertical joints between the anti-gravity cylinder segments 1 and the anti-side cylinder segments 2 are connected by high-strength bolts 3 on the end plates; the horizontal joints between the anti-gravity cylinder segments 1 of two adjacent cylinder rings are connected by high-strength bolts 3. The horizontal joints between the anti-side cylinder segments 2 of two adjacent cylinder rings are connected by high-strength bolts 3; the horizontal joints between the anti-gravity cylinder segments 1 and the anti-side cylinder segments 2 of two adjacent cylinder rings are flush.

[0039] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A wind power hybrid tower structure with separated anti-gravity and anti-lateral force, characterized in that: The tower structure is formed by stacking and connecting a plurality of cylinder rings, wherein the cylinder rings are axially symmetrical hollow closed cylinder structures, and the cylinder rings are formed by alternately connecting a plurality of anti-gravity cylinder sheets (1) and a plurality of anti-side cylinder sheets (2); The anti-gravity cylinder segments (1) and the anti-side cylinder segments (2) of two adjacent cylinder rings are connected to each other in correspondence with each other up and down, forming a tower structure in which the anti-gravity cylinder segments (1) and the anti-side cylinder segments (2) are continuous in the height direction of the tower; the anti-gravity cylinder segments (1) are located at the corners of the cylinder ring cross section, and the two sides of the anti-side cylinder segments (2) in the height direction are connected to the corresponding anti-gravity cylinder segments (1); the anti-gravity cylinder segments (1) are made of prefabricated reinforced concrete components or prefabricated steel plate concrete components; the anti-side cylinder segments (2) are made of corrugated steel plate components.

2. The anti-gravity and anti-lateral force separated wind power hybrid tower structure according to claim 1, characterized in that: The cross-sectional shape of the anti-gravity tube sheet (1) is an arc shape or a bent angle shape.

3. The anti-gravity and anti-lateral force separated wind power hybrid tower structure according to claim 2 is characterized in that: The corrugated steel plate component is a transverse rib corrugated steel plate or a vertical rib corrugated steel plate, and its waveform is any one of a sine wave, a trapezoid and a rectangle.

4. A wind power hybrid tower structure with separated anti-gravity and anti-lateral force according to any one of claims 1 to 3, characterized in that: The vertical joints between the anti-gravity cylinder segments (1) and the anti-lateral cylinder segments (2) are connected by end plate bolts or grouting materials, and the horizontal joints between the anti-gravity cylinder segments (1) of two adjacent cylinder rings are connected by post-tensioned prestressed tendons (4) and bolts, or both; the horizontal joints between the anti-lateral cylinder segments (2) of two adjacent cylinder rings are connected by bolts.

5. The anti-gravity and anti-lateral force separated wind power hybrid tower structure according to claim 4, characterized in that: The post-tensioned prestressed tendons (4) are internal post-tensioned prestressed tendons (4) or external post-tensioned prestressed tendons (4), and the post-tensioned prestressed tendons (4) run through the entire height of the tower structure.

6. The anti-gravity and anti-lateral force separated wind power hybrid tower structure according to claim 5, characterized in that: The cross-sectional shape of the tube ring is any one of a chamfered triangle, a chamfered quadrilateral, a rounded-end rectangle and a hexagon, and the structural form of the tower tube is a columnar body with equal thickness at the top and bottom or a conical body with a thick bottom and a thin top.

7. The anti-gravity and anti-lateral force separated wind power hybrid tower structure according to claim 6, characterized in that: The concrete strength grade of the anti-gravity cylinder (1) is not less than C60.

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