A sway damping type pole tower with a spherical support and a use method

Abstract

This invention proposes a swaying vibration-damping tower with a spherical support and its usage method. The tower includes a tower body and a base. The bottom of the tower body is connected to the base, and a hemispherical support is connected to the bottom of the tower body. A hemispherical groove is provided at the center of the top of the base, and the hemispherical support is installed within the hemispherical groove. The tower body and the foundation are connected by a vibration-damping device. This invention installs a viscoelastic damper at the bottom of the tower as a support and energy-absorbing component, which can resist dynamic loads, improve structural safety, and extend service life.

Description

Technical Field

[0001] This invention belongs to the technical field of tall tower structures in civil engineering, specifically relating to a swaying vibration-damping tower with spherical supports and its usage method. Background Technology

[0002] Tall tower structures are commonly used in power transmission towers, communication towers, streetlights, monitoring poles, and wind turbine towers. These structures are characterized by their large height, high slenderness ratio, and low damping, and must withstand dynamic forces such as wind, earthquakes, and environmental vibrations during service. Under long-term dynamic loads, the structure is prone to fatigue damage, leading to a shortened service life. Under high-intensity seismic or wind loads, the structure is susceptible to severe damage or even collapse, affecting the function of power and communication systems. Therefore, improving the safety and stability of tower structures against dynamic loads is of great significance. Traditional tower structures are generally fixed to the foundation through direct burial or bolt anchoring, with a rigid connection between the upper tower and the foundation. While these structures have high rigidity, they place high demands on the bearing capacity of the tower base under horizontal loads. Furthermore, their relatively low damping makes them susceptible to fatigue failure or excessive displacement and acceleration response under long-term fatigue loads or high-intensity dynamic loads, affecting the safety of the tower structure and the equipment on it.

[0003] The existing tower structure uses a rigid connection with the foundation. While this ensures high stiffness and stability, the high stiffness also leads to excessive seismic forces under earthquake loads. Furthermore, the constraint of high stiffness results in small structural deformation, making it difficult to install additional damping materials and achieve a high structural damping ratio. Improving the structural safety and reliability of tower structures under dynamic loads is one of the key issues in the application of tall tower structures. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a swaying vibration-damping tower with a spherical support and a method of using it, which releases the rotation constraint of the tower base. The dampers are connected to the tower body and the surrounding foundation respectively. When the tower body generates a swaying response, the viscoelastic dampers provide vertical support force and absorb vibration energy by deformation.

[0005] The embodiments of this application are implemented as follows: This application provides a rocking vibration-damping pole with a spherical support, including a tower body and a base. The bottom of the tower body is connected to the base. The tower body is characterized by having a hemispherical support connected to the bottom of the tower body, and a hemispherical groove at the center of the top of the base. The hemispherical support is installed in the hemispherical groove, and the tower body and the base are connected by a vibration-damping device.

[0006] In some alternative implementations, the vibration damping device includes a plurality of viscoelastic dampers, the top ends of which are connected to the tower body via an upper connector, and the bottom ends of which are connected to the base via a lower connector.

[0007] In some alternative embodiments, the viscoelastic damper includes outer steel plates on the left and right sides of the inner and outer clamping structure and an intermediate steel plate, with a viscoelastic material layer disposed between the outer steel plates and the intermediate steel plates.

[0008] In some alternative implementations, the upper connector includes an annular sleeve and a connecting seat. The annular sleeve is fitted over the tower body, and the connecting seat is connected to the annular sleeve and the top of the outer steel plate of the viscoelastic damper by bolts.

[0009] In some alternative embodiments, the lower connector includes an annular steel plate with a plurality of connecting blocks evenly spaced along the inner circumference of the annular steel plate. The connecting blocks are tangent to the inner circle of the annular steel plate, and the top of the connecting blocks is connected to the bottom of the inner steel plate of the viscoelastic damper. The annular steel plate is aligned with the center of the hemispherical groove and is connected to the base by bolts. The inner radius of the annular steel plate is smaller than the radius of the hemispherical groove.

[0010] In some alternative implementations, the gap between the hemispherical support and the hemispherical groove is filled with rubber to form a seal.

[0011] In some alternative implementations, the tower body is provided with a connecting flange at its bottom, which is connected to the top surface of the hemispherical support by connecting bolts.

[0012] In some optional embodiments, the annular sleeve is formed by sequentially splicing multiple arc-shaped clamps, and two adjacent arc-shaped clamps are connected by connecting lugs on both sides; the connecting seat includes a flat base and two connecting wing plates symmetrically arranged at the center of one side of the flat base, forming a locking gap between the two connecting wing plates, the locking gap being inserted into the connecting lugs of the two adjacent arc-shaped clamps and connected by bolts, and the flat base being connected to the outer steel plate by bolts.

[0013] In some alternative implementations, the annular steel plate is composed of multiple arc-shaped plates spliced ​​together and fixed to the base by bolts.

[0014] A method for using a rocking vibration-damping pole tower with a spherical support, characterized by the following: The base constrains the horizontal displacement of the tower body and supports the weight of the tower body, but does not constrain the rotation of the tower body. Under horizontal load, the tower body sways around the base. The tower body sways and hits the annular sleeve, and then transmits the force to the viscoelastic damper and the annular steel plate at the bottom. The viscoelastic damper dissipates energy through the deformation of the shear viscoelastic material layer and provides vertical support force. The annular steel plate is connected to the base by bolts to provide support force.

[0015] The beneficial effects of this application are as follows: This application provides a swaying vibration-damping tower with spherical supports and a method of using it. Vertical viscoelastic dampers are arranged around the bottom of the tower body. The viscoelastic dampers are connected to the tower body and the base respectively. When the tower body produces a swaying response, the viscoelastic dampers provide vertical support force and absorb vibration energy by deformation, forming a swaying energy-dissipating and vibration-damping tower structure. This reduces the vibration of the structure under earthquakes, wind and other dynamic loads, and has the functions of resisting dynamic loads, improving structural safety and extending service life. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a front view of the swaying vibration-damping tower in the embodiments of this application; Figure 2 This is a top view of the swaying vibration-damping tower in the embodiments of this application; Figure 3 This is a schematic diagram of the swaying vibration-damping tower in the embodiments of this application; Figure 4 This is a schematic diagram of the viscoelastic damper in the embodiments of this application; Figure 5a , Figure 5b This is a schematic diagram of the annular sleeve in an embodiment of this application; Figure 6 This is a schematic diagram of the connector structure in an embodiment of this application; Figure 7 This is a schematic diagram of the structure of the annular steel plate in the embodiments of this application. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0020] It should be understood that the sequence number of each step in the embodiment does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] The features and performance of this application will be further described in detail below with reference to the embodiments.

[0023] like Figures 1-2 As shown, this application provides a rocking vibration-damping pole with a spherical support, including a pole body 1 and a base 2. The bottom of the pole body is connected to the base, and a hemispherical support 3 is connected to the bottom of the pole body. A hemispherical groove 4 is provided at the center of the top of the base, and the hemispherical support is installed in the hemispherical groove. The pole body and the foundation are connected by a vibration damping device 5.

[0024] Furthermore, the vibration damping device includes multiple viscoelastic dampers 51, the top ends of which are connected to the tower body via upper connectors 52, and the bottom ends of which are connected to the base via lower connectors 53.

[0025] Example 1 like Figure 4 As shown, in this embodiment, the viscoelastic damper includes outer steel plates 511 on the left and right sides of the inner and outer clamping structure and a middle steel plate 512, with a viscoelastic material layer 513 disposed between the outer steel plate and the middle steel plate.

[0026] Furthermore, the upper connecting component includes an annular sleeve 521 and a connecting seat 522. The annular sleeve is fitted onto the tower body, and the connecting seat is connected to the top of the annular sleeve and the outer steel plate of the viscoelastic damper respectively by bolts.

[0027] The lower connector includes an annular steel plate 531, with multiple connecting blocks 532 evenly spaced along the inner circumference of the annular steel plate. The connecting blocks are tangent to the inner circle of the annular steel plate, and the top of the connecting blocks is connected to the bottom of the inner steel plate of the viscoelastic damper. The annular steel plate is aligned with the center of the hemispherical groove and connected to the base by bolts. The inner radius of the annular steel plate is smaller than the radius of the hemispherical groove.

[0028] Example 2 In this embodiment, the gap between the hemispherical support and the hemispherical groove is filled with rubber 6 to form a seal (see...). Figure 3 ).

[0029] Furthermore, the bottom of the tower body is provided with a connecting flange 7, which is connected to the top surface of the hemispherical support by connecting bolts.

[0030] Furthermore, the annular clamp is formed by sequentially splicing multiple arc-shaped clamps 5211, and two adjacent arc-shaped clamps are connected by connecting lugs 5212 on both sides (see...). Figure 5a , Figure 5b The connecting seat includes a flat base 5221 and two connecting wing plates 5222 symmetrically arranged at the center of one side of the flat base (see...). Figure 6 A locking gap is formed between the two connecting wing plates. The locking gap is inserted into the connecting lugs of the two adjacent arc-shaped clamps and connected by bolts. The flat plate base is connected to the outer steel plate by bolts.

[0031] Example 3 In this embodiment, the annular steel plate is composed of multiple arc-shaped plates 5311 spliced ​​together (see...). Figure 7 It is fixed to the base with bolts for easy installation and disassembly.

[0032] In this application, the base constrains the horizontal displacement of the tower body and supports the weight of the tower body, but does not constrain the rotation of the tower body. Under horizontal load, the tower body sways around the base. The tower body sways and hits the annular sleeve, and then transmits the force to the viscoelastic damper and the annular steel plate at the bottom. The viscoelastic damper dissipates energy through the deformation of the shear viscoelastic material layer and provides vertical support force. The annular steel plate is connected to the base by bolts to provide support force.

Claims

1. A rocking vibration-damping pole with a spherical support, comprising a tower body and a base, wherein the bottom of the tower body is connected to the base, characterized in that, The tower body is connected to a hemispherical support at the bottom, and a hemispherical groove is provided at the center of the top of the base. The hemispherical support is installed in the hemispherical groove, and the tower body and the foundation are connected by a vibration damping device.

2. A rocking vibration-damping tower with a spherical support according to claim 1, characterized in that, The vibration damping device includes multiple viscoelastic dampers. The top ends of the multiple viscoelastic dampers are connected to the tower body via an upper connector, and the bottom ends of the multiple viscoelastic dampers are connected to the base via a lower connector.

3. A rocking vibration-damping tower with a spherical support according to claim 2, characterized in that, The viscoelastic damper includes outer steel plates on the left and right sides of the inner and outer clamping structure and a middle steel plate, with a viscoelastic material layer disposed between the outer steel plate and the middle steel plate.

4. A rocking vibration-damping tower with a spherical support according to claim 3, characterized in that, The upper connecting component includes an annular sleeve and a connecting seat. The annular sleeve is fitted onto the tower body, and the connecting seat is connected to the annular sleeve and the top of the outer steel plate of the viscoelastic damper by bolts.

5. A rocking vibration-damping tower with a spherical support according to claim 3 or 4, characterized in that, The lower connector includes an annular steel plate, with multiple connecting blocks evenly spaced along the inner circumference of the annular steel plate. The connecting blocks are tangent to the inner circle of the annular steel plate, and the top of the connecting blocks is connected to the bottom of the inner steel plate of the viscoelastic damper. The annular steel plate is aligned with the center of the hemispherical groove and connected to the base by bolts. The inner radius of the annular steel plate is smaller than the radius of the hemispherical groove.

6. A rocking vibration-damping tower with a spherical support according to claim 5, characterized in that, The gap between the hemispherical support and the hemispherical groove is filled with rubber to form a seal.

7. A rocking vibration-damping tower with a spherical support according to claim 2 or 6, characterized in that, The tower body is equipped with a connecting flange at the bottom, which is connected to the top surface of the hemispherical support by connecting bolts.

8. A rocking vibration-damping tower with a spherical support according to claim 4, characterized in that, The annular sleeve is formed by sequentially splicing multiple arc-shaped clamps, and two adjacent arc-shaped clamps are connected by connecting lugs on both sides; the connecting seat includes a flat base and two connecting wing plates symmetrically arranged at the center of one side of the flat base. A locking gap is formed between the two connecting wing plates, and the locking gap is inserted into the connecting lugs of the two adjacent arc-shaped clamps and connected by bolts. The flat base is connected to the outer steel plate by bolts.

9. A rocking vibration-damping tower with a spherical support according to claim 5 or 6, characterized in that, The annular steel plate is composed of multiple arc-shaped plates spliced ​​together and fixed to the base by bolts.

10. A method of using a rocking vibration-damping tower with a spherical support, characterized in that, Includes the following: The base constrains the horizontal displacement of the tower body and supports the weight of the tower body, but does not constrain the rotation of the tower body. Under horizontal load, the tower body sways around the base. The tower body sways and hits the annular sleeve, and then transmits the force to the viscoelastic damper and the annular steel plate at the bottom. The viscoelastic damper dissipates energy through the deformation of the shear viscoelastic material layer and provides vertical support force. The annular steel plate is connected to the base by bolts to provide support force.

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