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

Abstract

The invention relates to the technical field of fan tower drums, in particular to a concrete filled steel tube fan tower drum connected through grouting sleeves, which comprises a base and a plurality of tower sections, the base is connected with the tower sections connected to the base through the grouting sleeves, and the adjacent tower sections are connected through the grouting sleeves; the grouting sleeve comprises a sleeve, a first connecting rod and a second connecting rod, the upper end of the first connecting rod is connected with the upper-layer structure, the lower end of the first connecting rod is arranged in the sleeve, and the upper end of the second connecting rod is arranged in the sleeve, and the lower end of the second connecting rod is connected with the lower-layer structure; the bottom of the sleeve is provided with a grouting port, and the top is provided with an air outlet. The upper-layer structure and the lower-layer structure are connected through the grouting sleeve, and the grouting material is injected into the sleeve, so that the stability and durability of connection of the first connecting rod, the second connecting rod and the sleeve are improved, the impact resistance and the bearing capacity of the whole structure are enhanced, and the problem of stress concentration is effectively avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fan tower, in particular to a steel pipe concrete fan tower connected by grouting sleeve. BACKGROUND

[0002] The steel pipe concrete fan tower connected by grouting sleeve is a structure form mainly applied to the construction of wind power fan tower. The basic structure is to combine steel pipe and concrete to form a whole tower through grouting sleeve connection. The role of grouting sleeve is to connect steel pipe sections to ensure the close combination between steel pipe sections and the force transmission efficiency of the connection.

[0003] However, during the tower construction process, when installing the tower in a strong wind area, the bottom may be affected by wind force, which may cause the sleeve to tilt or even collapse. Therefore, it is necessary to strengthen the connection between each tower section and the bottom and the base. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application aims to provide a steel pipe concrete fan tower connected by grouting sleeve to strengthen the connection between each tower section and the bottom and the base.

[0005] The technical solution adopted by the present application to solve its technical problems is: A steel pipe concrete fan tower connected by grouting sleeve, comprising a base and a plurality of tower sections, the base and the tower sections connected thereto, and adjacent tower sections are connected by grouting sleeves; the grouting sleeve comprises a sleeve, a first connecting rod and a second connecting rod, the inner part of the tower section is pre-buried with the first connecting rod and the sleeve, and the top of the base and the tower section is pre-buried with the second connecting rod; the lower end of the first connecting rod is placed in the upper part of the sleeve, and the upper end of the second connecting rod is placed in the lower part of the sleeve; the bottom of the sleeve is provided with a grouting port, and the top is provided with an air outlet.

[0006] Compared with the prior art, the present application has the following advantages: In the present application, the upper structure and the lower structure are connected by grouting sleeve, and grouting material is injected into the sleeve to form a solid bonding layer inside the sleeve, which improves the stability and durability of the first connecting rod, the second connecting rod and the sleeve connection, and also enhances the impact resistance and carrying capacity of the overall structure, effectively avoiding stress concentration problems.

[0007] As a preferred embodiment, the further technical solution of the present application is: Preferably, the base is provided with a connecting column near the corner.

[0008] Preferably, the outer surface of the sleeve is provided with an external thread structure one in the axial direction.

[0009] Preferably, the inner wall of the sleeve is provided with an internal thread structure in the axial direction.

[0010] Preferably, the outer surface of the first connecting rod and the second connecting rod is respectively provided with an external thread structure two in the axial direction.

[0011] Preferably, the top of the sleeve is provided with a connecting cylinder, the air outlet is arranged on the connecting cylinder, the top of the connecting cylinder is provided with a sealing band, and the bottom of the sleeve is provided with a sealing cover.

[0012] Preferably, the air outlet is arranged directly above the grouting port.

[0013] Preferably, the outer part of the lowermost tower section connected with the foundation is provided with a fixing seat, and the inner part of the lowermost tower section is provided with a connecting steel bar, both ends of the connecting steel bar penetrating through the lowermost tower section and being connected with the fixing seat.

[0014] Preferably, the top of each tower section is provided with an annular rib, and the foundation and the bottom of each tower section are provided with an annular groove matched with the annular rib.

[0015] By increasing the fixing seat on the outer part of the lowermost tower section and matching the annular rib and the annular groove at the connection between the upper and lower structures, the shear strength and tensile strength of the tower section are enhanced, and the stability and anti-seismic performance of the overall structure are improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic diagram of the fan tower in the application; Figure 2 is a structural schematic diagram of the grouting sleeve in the application; Figure 3 is a sectional view of Figure 2 ; Figure 4 is a schematic diagram of the grouting sleeve for installing the upper and lower structures; Figure 5 is a sectional view of the grouting sleeve for connecting the upper and lower structures; Figure 6 is a schematic diagram of the connection between the fixing seat and the lowermost tower section; Figure 7 is a structural schematic diagram of the annular groove; Explanation of reference signs: 1, base; 2, tower section; 3, grouting sleeve; 301, sleeve; 302, first connecting rod; 303, second connecting rod; 304, outer thread structure one; 305, inner thread structure; 306, outer thread structure two; 307, sealing cover; 308, grouting port; 309, connecting cylinder; 310, sealing band; 311, air outlet; 4, connecting column; 5, fixing seat; 6, connecting steel bar; 7, annular rib; 8, annular groove. DETAILED DESCRIPTION

[0017] The purpose of the following further elaboration of the present application in conjunction with specific examples is merely to better understand the content of the present application, and therefore, the examples do not limit the protection scope of the present application.

[0018] A steel pipe concrete wind turbine tower connected by grouting sleeves is composed of grouting sleeves 3, a base 1, and a plurality of tower sections 2. The base 1 is provided with connecting columns 4 near the corners at the bottom. The base 1 and the lowermost tower section 2 and the adjacent tower sections 2 are connected by the annularly arranged grouting sleeves 3.

[0019] The grouting sleeve 3 is composed of a sleeve 301, a first connecting rod 302, and a second connecting rod 303. The lower end of each tower section 2 is pre-buried with the first connecting rod 302 and the sleeve 301, and the lower end of the first connecting rod 302 is inserted into the top of the sleeve 301. The upper surface of the base 1 and the upper end surface of each tower section 2 are pre-buried with the second connecting rod 303 (wherein the topmost tower section 2 can not need to be pre-buried with the second connecting rod 303), and the upper end of the second connecting rod 303 extends to the outside of the structure end surface where it is located, and the upper end of the second connecting rod 303 is inserted into the bottom of the sleeve 301.

[0020] The outer surface of the sleeve 301 is provided with an outer thread structure one 304 along the axial direction thereof, the inner wall of the sleeve 301 is provided with an inner thread structure 305 along the axial direction thereof, and the outer surface of the first connecting rod 302 and the second connecting rod 303 is provided with an outer thread structure two 306. The provision of the thread structures on the sleeve 301, the first connecting rod 302, and the second connecting rod 303 can increase the contact area of the grouting material with the three, so that the grouting material can better penetrate and adhere to the surface of the sleeve 301, the first connecting rod 302, and the second connecting rod 303, improve the bonding force between the three and the concrete, and ultimately help to improve the connection strength of the overall structure of the tower.

[0021] After the bonding force between the grouting sleeve 3 and the grouting material is enhanced, when subjected to external forces (such as wind force, vibration, etc.), the grouting material will not easily fall off, and the thread structure can also disperse and transmit shear force, thereby enhancing the shear resistance of the overall structure, reducing the structural deformation or damage caused by external forces, and ensuring the stability of the tower under various loads.

[0022] In this embodiment, the bottom of the sleeve 301 is provided with an annular sealing cover 307, and the bottom of the side wall of the sleeve 301 is provided with a grouting port 308; the top of the sleeve 301 is fixedly connected with a connecting cylinder 309, the top of the connecting cylinder 309 is provided with an annular sealing band 310, the top of the side wall of the connecting cylinder 309 is provided with a gas outlet 311, and the gas outlet 311 is directly above the grouting port 308.

[0023] In this embodiment, the outer wall of each tower section 2 is provided with a hole corresponding to the position of the grouting port 308 and the gas outlet 311, respectively, and the hole is in communication with the grouting port 308 or the gas outlet 311 at the corresponding position; the grouting port 308 provides an inlet for the injection of grouting material, so that the grouting material can smoothly enter the inside of the sleeve 301; the gas outlet 311 is directly above the grouting port 308, and its main function is to discharge the bubbles or air generated during the grouting process, so as to avoid the existence of bubbles in the grouting material in the sleeve 301 and prevent the problem of low connection strength caused by gaps or bubbles in the inside of the sleeve 301.

[0024] The outer part of the lowermost tower section 2 connected with the base 1 is provided with an annular fixing seat 5, the lowermost tower section 2 is placed inside the fixing seat 5, and the inside of the lowermost tower section 2 is fixedly connected with a connecting steel bar 6, both ends of the connecting steel bar 6 penetrating through the side wall of the lowermost tower section 2 are connected with the fixing seat 5.

[0025] In this embodiment, the connecting steel bars 6 in the inside of the lowermost tower section 2 are arranged in a cross shape, the fixing seat 5 is connected with the lowermost tower section 2 into a whole through the connecting steel bars 6, the bearing capacity of the lowermost tower section 2 is improved, the external force applied to the lowermost tower section 2 can be dispersed and transmitted, the external load such as vibration and wind can be effectively shared, and the anti-seismic and anti-wind capacity of the structure is enhanced.

[0026] The upper surface of the base 1 and the top end surface of each tower section 2 are also respectively provided with annular ribs 7, and the lower surface of each tower section 2 is provided with an annular groove 8 engaged with the annular rib 7. The upper structure and the lower structure are connected through the annular rib 7 and the annular groove 8, the anti-deformation capacity of the tower section 2 when bearing load is enhanced, especially the anti-twisting and anti-bending capacity of the tower section 2 is increased, the structural stability of the tower section 2 can also be enhanced, and uneven deformation or damage caused by external force in the long-term use process is prevented.

[0027] In the embodiment, each tower section 2 is a prefabricated part manufactured in a factory, and in the embodiment, the sleeve 301, the first connecting rod 302 and the second connecting rod 303 are respectively pre-buried during the manufacturing of the tower section 2; the sleeve 301 is made of alloy steel to provide sufficient strength and rigidity, to ensure that the sleeve 301 can maintain stability when bearing the tower connection, and to maintain good connection performance under conditions such as strong wind and vibration, especially when the fan tower is exposed to harsh environments for a long time, to prevent structural aging or corrosion caused by wind, rain and other factors.

[0028] When the construction is carried out, after the parts are processed in the factory, the base 1 is first placed on the ground, the connecting column 4 at the bottom of the base 1 is embedded in the ground and fixed, so that the base 1 is flush with the ground; the surface of the annular rib 7 on the base 1 is smeared with adhesive, the lowermost tower section 2 is hoisted above the base 1, the position of the lowermost tower section 2 is adjusted so that the upper end of the second connecting rod 303 on the base 1 is inserted into the sleeve 301; the sleeve 301 is grouted, the grouting material enters the inside of the sleeve 301 through the grouting port 308, as the grouting material in the inside of the sleeve 301 increases, the air in the sleeve 301 is discharged through the air outlet 311, until the grouting material uniformly overflows from the air outlet 311, at this time the sleeve 301 is filled with grouting material, the grouting is stopped, and the grouting port 308 and the air outlet 311 are plugged; after a certain time of hardening, the grouting material will form a solid adhesive layer, at this time the grouting sleeve 3 and the second connecting rod 303 are connected into a whole, and then the base 1 and the lowermost tower section 2 are connected. The connection mode between other tower sections 2 is the same as the above method, which is not described here.

[0029] In the application, the grouting sleeve forms a close connection between the first connecting rod and the second connecting rod, improves the stability and durability of the connection node, enhances the seismic resistance and impact resistance of the structure, optimizes the construction process, and effectively avoids the stress concentration problem; and the overall carrying capacity and long-term reliability of the structure are enhanced.

[0030] The above only describes the preferred embodiments of the application, and is not intended to limit the scope of the application, and any equivalent changes made according to the content of the specification and drawings of the application are included in the scope of the application.

Claims

1. A steel tube concrete wind turbine tower connected by means of grouted sleeves, comprising a base and a number of tower segments, characterized in that: The base and the tower section connected thereon and the adjacent tower sections are connected by grouting sleeves respectively; the grouting sleeve comprises a sleeve, a first connecting rod and a second connecting rod, the inner part of the tower section is pre-buried with the first connecting rod and the sleeve respectively, and the top part of the tower section and the base are pre-buried with the second connecting rod respectively; the lower end of the first connecting rod is arranged at the upper part of the sleeve, and the upper end of the second connecting rod is arranged at the lower part of the sleeve; the bottom part of the sleeve is provided with a grouting port, and the top part of the sleeve is provided with an air outlet.

2. A steel pipe concrete wind turbine tower incorporating a grout sleeve connection according to claim 1 characterised in that: The base is provided with connecting columns near the corners at the bottom part.

3. The steel pipe concrete wind turbine tower of claim 1, wherein: The outer surface of the sleeve is axially provided with an external thread structure one.

4. The steel pipe concrete wind turbine tower of claim 1, wherein: The inner wall of the sleeve is axially provided with an internal thread structure.

5. The steel pipe concrete wind turbine tower of claim 1, wherein: The outer surface of the first connecting rod and the second connecting rod is respectively axially provided with an external thread structure two.

6. A steel pipe concrete wind turbine tower incorporating a grout sleeve connection according to claim 1 characterised in that: The top part of the sleeve is provided with a connecting cylinder, the air outlet is arranged on the connecting cylinder, the top part of the connecting cylinder is provided with a sealing band, and the bottom part of the sleeve is provided with a sealing cover.

7. The steel pipe concrete wind turbine tower of claim 1, wherein: The air outlet is arranged directly above the grouting port.

8. The steel pipe concrete wind turbine tower connected with grouting sleeve according to claim 1, characterized in that: The outer part of the lowermost tower section connected with the base is provided with a fixing seat, and the inner part of the lowermost tower section is provided with a connecting steel bar, both ends of the connecting steel bar penetrating through the lowermost tower section and being connected with the fixing seat.

9. The steel pipe concrete wind turbine tower connected with grouted sleeve according to claim 1, characterized in that: The top part of each tower section is provided with an annular rib, and the bottom part of the base and each tower section is provided with an annular groove for clamping the annular rib.

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