Concrete-filled steel tube fan tower tube connected through grouting sleeve

Abstract

The utility model relates to the technical field of wind power generation, and aims to provide a concrete filled steel tube fan tower tube connected by using a grouting sleeve. The fan tower drum is convenient to construct, high in tower drum integrity, high in connection strength and good in bearing capacity. The fan tower drum comprises a tower drum assembly and a connecting assembly. The tower drum assembly comprises a plurality of tower drum sections arranged from bottom to top, the bottommost tower drum section is arranged on the foundation platform, and a plurality of concrete filled steel tubular columns are arranged on the inner wall of each tower drum section; the connecting assembly comprises a plurality of grouting sleeves, the grouting sleeves are arranged at the connecting position of every two adjacent tower drum sections and the connecting position of the tower drum section at the bottommost portion and the foundation platform, the upper portions of the grouting sleeves are located in the tower drum sections above the connecting positions, and the lower portions of the grouting sleeves are located in the tower drum sections below the connecting positions or the foundation platform. The utility model solves the problems that the fan tower in the prior art adopts bolts to connect all sections, so that the construction is inconvenient, the integrity of the tower is poorer, and the bearing capacity of the tower is poorer.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, in particular to a steel tube concrete fan tower connected by a grouting sleeve. Background Art

[0002] Driven by the goal of "carbon peak and carbon neutrality", my country's wind power industry has further developed rapidly, and a large number of onshore and offshore wind turbines have been built. With the increase in the unit capacity and impeller diameter of wind turbines, a series of challenges have been brought about, such as the increase in hub height and the sharp increase in tower load.

[0003] In order to improve the safety, stability and durability of wind turbine towers, people gradually use steel tube concrete towers instead of traditional flexible steel towers. Steel tube concrete towers can reduce their construction costs while improving the tower's bearing capacity and normal use capacity. In order to reduce the impact of environmental, tooling and other factors on construction operations, steel tube concrete towers mainly adopt segment prefabrication and assembly, that is, each tower section is prefabricated and then assembled and connected on site. At present, the tower segment connection is connected by bolts. This connection method has the following problems: First, there are a large number of openings on each segment of the tower, and the production and assembly are cumbersome, especially during offshore construction, the working environment is complex, which is not conducive to the assembly work; second, the strength of the bolt connection is low, and the integrity of the tower is poor, resulting in poor tower bearing capacity. Utility Model Content

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the wind turbine tower in the prior art uses bolts to connect the various sections, the bolt hole production and bolt assembly work are complicated, it is not convenient for construction, and the bolt connection strength is low, the tower integrity is poor, and the tower bearing capacity is poor. Thus, a steel tube concrete wind turbine tower connected by a grouting sleeve is provided, which is convenient to construct, has high tower integrity, high connection strength, and good bearing capacity.

[0005] In order to solve the above problems, the utility model provides a steel tube concrete fan tower connected by a grouting sleeve, comprising:

[0006] A tower assembly, wherein the tower assembly comprises a plurality of tower segments arranged in sequence from bottom to top, and the bottommost tower segment is arranged on a foundation pedestal, and a plurality of steel tube concrete columns are arranged at intervals along the circumference of the inner wall of each tower segment, and the steel tube concrete columns of two adjacent tower segments are located at corresponding positions;

[0007] A connection assembly, wherein the connection assembly includes a plurality of grouting sleeves, wherein the grouting sleeves are provided at the connection between two adjacent tower segments and at the connection between the bottommost tower segment and the foundation pedestal, wherein the upper portion of the grouting sleeve is located in the tower segment above the connection, and the lower portion is located in the tower segment below the connection or in the foundation pedestal.

[0008] Optionally, the steel tube concrete column includes: a steel tube connected to the inner wall of the tower segment and concrete arranged between the steel tube and the inner wall of the tower segment.

[0009] Optionally, the grouting sleeve includes: a first connecting member, a second connecting member and a sleeve, the sleeve is arranged along the height direction of the tower assembly, one end of the first connecting member is inserted into the sleeve from the upper end of the sleeve, and one end of the second connecting member is inserted into the sleeve from the lower end of the sleeve.

[0010] Optionally, the other end of the first connecting member is located in the steel tube concrete column of the tower segment above the connection, and the other end of the second connecting member is located in the steel tube concrete column of the tower segment below the connection or in the foundation pedestal.

[0011] Optionally, the bottom surface of the sleeve is flush with the bottom surface of the tower segment above the connection.

[0012] Optionally, slurry is injected into the sleeve.

[0013] Optionally, a grouting hole and an exhaust hole are provided on the sleeve, and the grouting hole is located below the exhaust hole.

[0014] Optionally, the inner wall and / or outer wall of the sleeve has a protrusion.

[0015] Optionally, the protrusion includes a plurality of tooth-shaped protrusions continuously arranged along the height direction of the sleeve.

[0016] Optionally, rubber seals are provided at both ends of the sleeve.

[0017] The utility model has the following advantages:

[0018] 1. The utility model provides a steel tube concrete wind turbine tower connected by a grouting sleeve, comprising: a tower assembly and a connection assembly, wherein the tower assembly comprises a plurality of tower segments arranged in sequence from bottom to top, and the bottom tower segment is arranged on a foundation pedestal. The inner wall of each tower segment is provided with a plurality of steel tube concrete columns at intervals along its circumference, and the positions of the steel tube concrete columns of two adjacent tower segments correspond. The connection assembly comprises a plurality of grouting sleeves, and the connection between two adjacent tower segments and the connection between the bottom tower segment and the foundation pedestal are both provided with grouting sleeves, the upper portion of the grouting sleeve is located in the tower segment above the connection, and the lower portion is located in the tower segment below the connection or in the foundation pedestal. The upper and lower parts of the grouting sleeve are fixed by steel tube concrete columns, and the foundation pedestal and the connection of each tower segment are achieved through the grouting sleeve. This type of wind turbine tower is more convenient during construction, which is conducive to improving the construction rate. In addition, grouting sleeves are arranged at the segment connections, which makes the wind turbine tower more integrated and has a stronger bearing capacity.

[0019] 2. The utility model provides a steel tube concrete fan tower connected by a grouting sleeve, and the steel tube concrete column includes: a steel tube connected to the inner wall of the tower segment and concrete arranged between the steel tube and the inner wall of the tower segment. The steel tube is arranged on the inner wall of the tower segment, and concrete is poured between the steel tube and the inner wall of the tower segment to form a steel tube concrete column. This type of fan tower can be prefabricated in segments in a factory and then transported to the site for construction and assembly.

[0020] 3. The utility model provides a steel tube concrete wind turbine tower connected by a grouting sleeve, wherein the grouting sleeve includes: a first connecting member, a second connecting member and a sleeve, wherein the sleeve is arranged along the height direction of the tower assembly, one end of the first connecting member is inserted into the sleeve from the upper end of the sleeve, and one end of the second connecting member is inserted into the sleeve from the lower end of the sleeve. When the grouting sleeve is arranged at the connection between two adjacent tower segments, the other end of the first connecting member is located in the steel tube concrete column of the upper tower segment of the two adjacent tower segments, and the other end of the second connecting member is located in the steel tube concrete column of the lower tower segment. When the grouting sleeve is arranged at the connection between the bottom tower segment and the foundation pedestal, the other end of the first connecting member is located in the steel tube concrete column of the bottom tower segment, and the other end of the second connecting member is located in the foundation pedestal. By setting up grouting sleeves to achieve the connection between adjacent tower segments or tower segments and foundation pedestals, the connection surfaces can be effectively prevented from being disengaged, the anti-overturning and anti-cracking performance of the wind turbine tower can be improved, and the integrity and safety of the wind turbine tower can be ensured.

[0021] 4. The steel tube concrete fan tower provided by the utility model is connected by a grouting sleeve, and the bottom surface of the sleeve is flush with the bottom surface of the tower segment above the tower segment connection. In this way, the sleeve is not easily damaged when the tower segment is hoisted, and the service life of the sleeve is extended.

[0022] 5. The wind turbine tower provided by the utility model has slurry injected into the sleeve. After the slurry solidifies, the first connecting member and the second connecting member are fastened together, thereby fastening adjacent tower segments or the bottommost tower segment and the foundation pedestal together, and the connection strength is high.

[0023] 6. The steel tube concrete fan tower provided by the utility model is connected with a grouting sleeve, and the sleeve is provided with a grouting hole and an exhaust hole. The grouting hole is provided to facilitate grouting into the sleeve, and the exhaust hole allows the air in the cavity to be discharged from the hole to ensure that the grouting is dense. And the slurry will be discharged from the exhaust hole after being filled. The exhaust hole is also provided to facilitate judging whether the sleeve is filled with slurry.

[0024] 7. The steel tube concrete wind turbine tower provided by the utility model is connected by a grouting sleeve, and the inner wall and / or outer wall of the sleeve has a protrusion. Preferably, the protrusion includes a plurality of tooth-shaped protrusions arranged continuously along the height direction of the sleeve. The mechanical bite force and friction force between the sleeve and the slurry are increased by providing the protrusion, thereby increasing the overall strength of the wind turbine tower and improving its load-bearing performance.

[0025] 8. The steel tube concrete fan tower provided by the utility model is connected by a grouting sleeve, and rubber seals are arranged at both ends of the sleeve. The rubber seals can provide buffering when the tower segments are hoisted and docked, reduce the collision of the docking surfaces, and prevent water seepage inside the sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a schematic diagram of a steel tube concrete fan tower connected by a grouting sleeve according to the utility model;

[0028] Figure 2 It is a schematic diagram of the connection between the bottom tower section of the steel tube concrete fan tower connected by the grouting sleeve and the foundation cap in the utility model;

[0029] Figure 3 It is a top view of the connection between the bottom tower section and the foundation cap in the steel tube concrete fan tower connected by the grouting sleeve of the utility model;

[0030] Figure 4 It is a schematic diagram of connecting two adjacent tower sections of a steel tube concrete fan tower connected by a grouting sleeve according to the utility model;

[0031] Figure 5 It is a top view of two adjacent tower sections of a steel tube concrete fan tower connected by a grouting sleeve according to the utility model;

[0032] Figure 6 The utility model is a schematic diagram of a grouting sleeve in a steel tube concrete fan tower connected by a grouting sleeve.

[0033] Description of reference numerals:

[0034] 1. tower segment, 11. concrete-filled steel tube column, 111. steel tube, 112. concrete;

[0035] 2. Foundation bearing platform;

[0036] 31. grouting sleeve, 311. first connecting piece, 312. second connecting piece, 313. sleeve, 314. grouting hole, 315. exhaust hole, 316. raised part, 317. rubber sealing piece. DETAILED DESCRIPTION

[0037] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0041] like Figure 1 As shown, it is a preferred embodiment of the steel tube concrete wind turbine tower connected by the utility model using a grouting sleeve, and the wind turbine tower includes: a tower assembly and a connection assembly. The tower assembly is in the shape of a truncated cone as a whole, and includes a plurality of tower segments 1 arranged in sequence from bottom to top, and the bottom tower segment 1 is arranged on the foundation pedestal 2. The inner wall of each tower segment 1 is provided with a plurality of steel tube concrete columns 11 at intervals along its circumference, and the positions of the steel tube concrete columns 11 of two adjacent tower segments 1 correspond. The connection assembly is used to connect each tower segment 1 and the foundation pedestal 2, and the connection assembly includes a plurality of grouting sleeves 31. Grouting sleeves 31 are provided at the connection between two adjacent tower segments 1 and the connection between the bottom tower segment 1 and the foundation pedestal 2, and the upper part of the grouting sleeve 31 is located in the tower segment 1 above the connection, and the lower part is located in the tower segment 1 or the foundation pedestal 2 below the connection. During construction, each tower segment 1 is hoisted one by one, that is, the bottom tower segment 1 is first set on the foundation pedestal 2, and then the second, third, etc. tower segments 1 are connected to the previous tower segment 1 in sequence. The upper part of the grouting sleeve 31 set at the connection between two adjacent tower segments 1 is located in the steel tube concrete column 11 of the upper tower segment 1, and the lower part is located in the steel tube concrete column 11 of the lower tower segment 1. The upper part of the grouting sleeve 31 located at the connection between the bottom tower segment 1 and the foundation pedestal 2 is located in the steel tube concrete column 11 of the tower segment 1, and the lower part is located in the foundation pedestal 2. The connection between the foundation pedestal 2 and each tower segment 1 is achieved through the grouting sleeve 31. This type of wind turbine tower is more convenient during construction and can speed up the construction speed. In addition, the grouting sleeve 31 is set at the connection, and the integrity of the wind turbine tower is better, which improves the tower's anti-overturning ability and overall bearing performance.

[0042] Specifically, in this embodiment, six steel tube concrete columns 11 are evenly spaced along the circumference of the inner wall of each tower segment 1. The steel tube concrete column 11 includes: a steel pipe 111 connected to the inner wall of the tower segment 1 and concrete 112 arranged between the steel pipe 111 and the inner wall of the tower segment 1. The steel pipe 111 is connected to the inner wall of the tower segment 1, and the upper and lower ends of the steel pipe 111 are open, and the upper and lower end surfaces are flush with the upper and lower end surfaces of the tower segment 1. Concrete 112 is poured between the steel pipe 111 and the inner wall of the tower segment 1, and after solidification, a steel tube concrete column 11 that is integrated with the tower segment 1 is formed.

[0043] In other embodiments, the number of the steel tube concrete columns 11 arranged on the inner wall of each tower segment 1 may also be three, four, eight, etc.

[0044] Furthermore, in this embodiment, six grouting sleeves 31 are provided at the connection between two adjacent tower segments 1 and at the connection between the bottommost tower segment 1 and the foundation pedestal 2, which is the same as the number of the steel tube concrete columns 11. Specifically, as Figure 6 As shown, the grouting sleeve 31 includes: a first connecting member 311, a second connecting member 312 and a sleeve 313. The sleeve 313 is arranged along the height direction of the tower assembly, one end of the first connecting member 311 is inserted into the sleeve 313 from the upper end of the sleeve 313, and one end of the second connecting member 312 is inserted into the sleeve 313 from the lower end of the sleeve 313. When the grouting sleeve 31 is arranged at the connection of two adjacent tower segments 1, the other end of the first connecting member 311 is located in the steel tube concrete column 11 of the upper tower segment 1 of the two adjacent tower segments 1, and the other end of the second connecting member 312 is located in the steel tube concrete column 11 of the lower tower segment 1. When the grouting sleeve 31 is arranged at the connection of the bottom tower segment 1 and the foundation pedestal 2, the other end of the first connecting member 311 is located in the steel tube concrete column 11 of the bottom tower segment 1, and the other end of the second connecting member 312 is located in the foundation pedestal 2. Specifically, in this embodiment, the first connecting member 311 and the second connecting member 312 are preferably ribbed steel bars. The grouting sleeve 31 is arranged to achieve the connection between adjacent tower segments 1 and the bottom tower segment 1 and the foundation pedestal 2, ensuring the integrity of the wind turbine tower and the safety during use.

[0045] The sleeve 313 is a cylinder with two ends open, and rubber seals 317 are provided at both ends. The rubber seals 317 can provide buffering when the tower segment 1 is hoisted and docked, reduce the collision of the docking surface, and prevent water seepage inside the sleeve 313. Grouting holes 314 and exhaust holes 315 are provided on the side wall of the sleeve 313, wherein the grouting holes 314 are located below the exhaust holes 315, and slurry can be injected into the sleeve 313 through the grouting holes 314. The slurry is preferably a micro-expansion high-strength grouting material. After one end of the first connector 311 and the second connector 312 are inserted into the sleeve 313, the slurry is injected. After the slurry solidifies, the first connector 311 and the second connector 312 can be connected as a whole by inserting the parts of the sleeve 313 into the sleeve 313. During grouting, the exhaust holes 315 can allow the air in the sleeve 313 to be discharged from the exhaust holes 315 to ensure dense grouting. After the slurry is filled, it will be discharged from the exhaust hole 315. The exhaust hole 315 is also provided to facilitate judging whether the inside of the sleeve 313 is already filled with slurry.

[0046] The bottom surface of the sleeve 313 is flush with the bottom surface of the tower segment 1 located above the connection, so that the sleeve 313 is not easily damaged when the tower segment 1 is hoisted, thereby extending the service life of the sleeve 313.

[0047] In other embodiments, the location of the sleeve 313 may also be changed. For example, the bottom surface of the sleeve 313 may also be located below the bottom surface of the tower segment 1 .

[0048] In addition, the inner wall and / or outer wall of the sleeve 313 has a protrusion 316. Figure 6 As shown, in this embodiment, a protrusion 316 is provided on both the inner wall and the outer wall of the sleeve 313, and the protrusion 316 includes a plurality of tooth-shaped protrusions continuously provided along the height direction of the sleeve 313. The mechanical bite force and friction force between the sleeve 313 and the slurry are increased by providing the protrusion 316, thereby increasing the overall strength of the wind turbine tower and improving its bearing performance.

[0049] In other embodiments, the protrusion 316 may be provided only on the inner wall or only on the outer wall, or the protrusion 316 may not be provided on both the inner wall and the outer wall.

[0050] In other embodiments, the protrusion 316 may also be a protrusion in other shapes such as a triangle.

[0051] The installation process of the wind turbine tower provided in this embodiment is described as follows:

[0052] The tower segment 1 is a prefabricated component and needs to be prefabricated in the factory. Six steel pipes 111 are welded and set at the corresponding positions of the inner wall of the tower segment 1, and then the first connector 311 is set at the bottom of the steel pipe 111 through tooling positioning. Then the sleeve 313 is set through tooling positioning, so that one end of the first connector 311 is inserted into the sleeve 313, and half of the length of the first connector 311 is inserted into the sleeve 313. The bottom surface of the sleeve 313 is adjusted synchronously to be flush with the bottom surface of the tower segment 1. After that, it is necessary to open a hole in the steel pipe 311 to expose the grouting hole 314 and the exhaust hole 315, so as to subsequently grout and exhaust the sleeve 313. Then, the second connector 312 is set at the top of the steel pipe 311 through tooling positioning, so that one end of the second connector 312 extends out of the top surface of the tower segment 1, and half of the length of the second connector 312 extends out of the top surface of the tower segment 1. In addition, the first connecting member 311 , the second connecting member 312 and the sleeve 313 are optimally located at the center of the cavity between the steel pipe 311 and the inner wall of the tower segment 1 .

[0053] After the first connector 311, the second connector 312 and the sleeve 313 are positioned, concrete 112 is injected into the steel tube 111, and the concrete 112 solidifies to form a steel tube concrete column 11. At this time, the first connector 311 and the sleeve 313 are all buried in the steel tube concrete column 11, and the lower half of the second connector 312 is also buried in the steel tube concrete column 11, and the upper half extends out of the top surface of the tower segment 1. This completes the prefabrication of the tower segment 1. The prefabricated tower segments 1 are delivered to the construction site for on-site construction.

[0054] like Figure 2 , Figure 3As shown, the on-site construction is as follows: first, connect the bottom tower segment 1 and the foundation pedestal 2. Before pouring, the foundation pedestal 2 is pre-buried with multiple second connectors 312, so that the upper end of the second connector 312 extends out of the foundation pedestal 2 by a certain length, preferably half the length of the second connector 312. Then, pour the foundation pedestal 2. When the demoulding and curing of the foundation pedestal 2 is completed and the concrete strength reaches the design value, apply high-strength structural adhesive on the top surface of the foundation pedestal 2. The structural adhesive can adjust the horizontality. Then, hoist the bottom tower segment 1 above the foundation pedestal 2. Insert the upper end of the second connector 312 set on the foundation pedestal 2 into the corresponding sleeve 313. Then, grout (micro-expansion high-strength grouting material) is injected into the sleeve 313 from the grouting hole 314 until the grout overflows continuously and evenly from the exhaust hole 315, and then the grouting hole 314 and the exhaust hole 315 are blocked.

[0055] The connection methods of the remaining tower segments 1 are the same, and the installation process is described by taking two tower segments 1 as an example. Figure 4 , Figure 5 As shown, after the installation of a tower segment 1 located at the bottom is completed, a second connecting piece 312 will be reserved on its top, and high-strength structural adhesive will be applied to the top surface of the tower segment 1. The tower segment 1 located above is hoisted over, and the upper end of the second connecting piece 312 set on the tower segment 1 located below is inserted into the corresponding sleeve 313 on the tower segment 1 located above. Then, grouting (micro-expansion high-strength grouting material) is injected into the sleeve 313 from the grouting hole 314 until the grout continuously and evenly overflows from the exhaust hole 315, and then the grouting hole 314 and the exhaust hole 315 are blocked, and the connection of the tower segment 1 is completed. Follow these steps when installing the remaining tower segments 1.

[0056] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A steel tube concrete fan tower connected by a grouting sleeve, characterized in that: include: A tower assembly, the tower assembly comprising a plurality of tower segments (1) arranged in sequence from bottom to top, wherein the bottommost tower segment (1) is arranged on a foundation pedestal (2), a plurality of steel tube concrete columns (11) are arranged at intervals along the circumference of the inner wall of each tower segment (1), and the positions of the steel tube concrete columns (11) of two adjacent tower segments (1) are corresponding; A connection assembly, the connection assembly comprising a plurality of grouting sleeves (31), wherein the grouting sleeves (31) are provided at the connection between two adjacent tower segments (1) and at the connection between the bottommost tower segment (1) and the foundation pedestal (2), wherein the upper portion of the grouting sleeve (31) is located in the tower segment (1) above the connection, and the lower portion is located in the tower segment (1) or the foundation pedestal (2) below the connection.

2. The steel tube concrete fan tower connected by grouting sleeve according to claim 1 is characterized in that: The steel tube concrete column (11) comprises: a steel tube (111) connected to the inner wall of the tower segment (1) and concrete (112) arranged between the steel tube (111) and the inner wall of the tower segment (1).

3. The steel tube concrete fan tower connected by grouting sleeve according to claim 2 is characterized in that: The grouting sleeve (31) comprises: a first connecting piece (311), a second connecting piece (312) and a sleeve (313); the sleeve (313) is arranged along the height direction of the tower assembly; one end of the first connecting piece (311) is inserted into the sleeve (313) from the upper end of the sleeve (313); and one end of the second connecting piece (312) is inserted into the sleeve (313) from the lower end of the sleeve (313).

4. The steel tube concrete fan tower connected by grouting sleeve according to claim 3 is characterized in that: The other end of the first connecting member (311) is located in the steel tube concrete column (11) of the tower segment (1) above the connection, and the other end of the second connecting member (312) is located in the steel tube concrete column (11) of the tower segment (1) below the connection or in the foundation pedestal (2).

5. The steel tube concrete fan tower connected by grouting sleeve according to claim 4, characterized in that: The bottom surface of the sleeve (313) is flush with the bottom surface of the tower segment (1) above the connection point.

6. The steel tube concrete fan tower connected by grouting sleeve according to claim 3, characterized in that: The sleeve (313) is filled with slurry.

7. The steel tube concrete fan tower connected by grouting sleeve according to claim 6, characterized in that: The sleeve (313) is provided with a grouting hole (314) and an exhaust hole (315), and the grouting hole (314) is located below the exhaust hole (315).

8. The steel tube concrete fan tower connected by grouting sleeve according to claim 3, characterized in that: The inner wall and / or outer wall of the sleeve (313) has a protrusion (316).

9. The steel tube concrete fan tower connected by grouting sleeve according to claim 8, characterized in that: The protrusion (316) comprises a plurality of tooth-shaped protrusions continuously arranged along the height direction of the sleeve (313).

10. The steel tube concrete fan tower connected by grouting sleeve according to claim 3, characterized in that: Rubber sealing members (317) are provided at both ends of the sleeve (313).

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