Tuned mass damper for wind-induced vibration control of a cylindrical high-rise structure with adjustable stiffness and damping and design method and adjustment method thereof

Abstract

The present application relates to a kind of stiffness and adjustable damping of cylindrical high-rise structure wind vibration control tuned mass damper and its design method, adjusting method.Ring movement mass unit is connected with chimney top by suspension unit, adjustable stiffness unit is arranged between ring movement mass unit and chimney structure, for adjusting the overall stiffness and natural frequency of tuned mass damper.Adjustable damping unit is composed of permanent magnet, magnet plate and conductive copper plate arranged on the upper surface of ring fixed support platform and the lower surface of ring movement mass unit, magnet plate on the upper surface of ring fixed support platform is equipped with lifting nut, for adjusting the distance between conductive copper plate on the lower surface of ring movement mass unit and permanent magnet plate on the upper surface of ring fixed support platform, to realize the adjustment of tuned mass damper damping parameter.The tuned mass damper involved in the present application can adjust the stiffness and damping parameter on site, to improve the wind vibration control efficiency of tuned mass damper.

Description

Technical Field

[0001] This invention relates to a tuned mass damper for wind vibration control of a cylindrical tall structure with adjustable stiffness and damping, as well as its design and adjustment methods, belonging to the field of structural vibration control technology. Background Technology

[0002] Tall cylindrical structures (such as chimneys) are highly sensitive to wind loads due to their height and flexibility, and are prone to large-amplitude vibrations under wind loads, which seriously affect structural safety. Tuned mass dampers (TMDs) are an effective technical means to control wind-induced vibrations of tall cylindrical structures such as chimneys, and have been widely used both domestically and internationally.

[0003] Tuned mass dampers (TMDs) utilize the principle of resonance to absorb and transfer the vibration energy of the main structure to the TMD, thereby reducing the wind-induced vibration response of the main structure. A typical TMD device consists of a mass block, a stiffening device, and a damping device. The mass block is connected to the main structure through the stiffening and damping devices; the stiffening device often uses springs, laminated rubber supports, or suspended pendulums; the damping device often uses viscous fluid dampers or eddy current dampers. Because chimneys can vibrate in any horizontal direction, suspended tuned mass dampers are commonly used in engineering. For structures like chimneys that require smoke exhaust, the tuned mass damper mass block is generally installed externally and is often in a ring-shaped form. This solves both the problem of concentrated mass causing uneven weight distribution and the problem of asynchronous vibration caused by multiple dispersed mass blocks.

[0004] The natural frequency of a suspended tuned mass damper (TMD) is only related to its suspension pendulum length. When the chimney's vibration frequency is high, the suspension pendulum length will be very short, making it difficult to accurately adjust the pendulum length during actual construction. This affects the TMD's vibration frequency and reduces its structural vibration reduction effect. Furthermore, with a short suspension pendulum length, the sway angle of the suspended TMD cannot satisfy the linear assumption of small-angle oscillation, leading to a significant increase in the nonlinear vibration of the suspended TMD and adversely affecting its vibration reduction performance.

[0005] Furthermore, during the design of tuned mass dampers (TMDs), there is often a discrepancy between the structural dynamic parameters calculated using the finite element model of the chimney and the actual dynamic parameters of the constructed chimney. To fully utilize the structural vibration reduction effect of the TMD, it is often necessary to fine-tune the TMD's dynamic parameters (stiffness and damping parameters) on-site. Therefore, the tuned mass damper needs to have the ability to adjust the TMD's dynamic parameters on-site to achieve optimal control of the structure. However, suspended tuned mass dampers require adjusting the natural frequency of the damper by adjusting the suspension pendulum length, and for suspended TMDs with short suspension pendulum lengths, adjusting the natural frequency of the TMD on-site is very difficult.

[0006] The damping devices for tuned mass dampers in general structural installations typically employ viscous fluid dampers. However, viscous fluid dampers suffer from high sealing friction and low vibration reduction sensitivity; once worn and leaking oil, they immediately lose their damping force. Therefore, the inspection and maintenance costs of viscous fluid dampers are relatively high. Compared to traditional viscous fluid dampers, eddy current dampers are devices that generate eddy currents through electromagnetic induction and dissipate mechanical vibration energy. They offer advantages such as fast response speed, good damping effect, and no maintenance. However, eddy current dampers have disadvantages such as low energy density and insufficient damping force, making them unsuitable for direct use as dampers for main structural vibration reduction. They are often used as damping devices in tuned mass dampers. However, the actual damping force generated by an eddy current damper is affected by many factors (e.g., the arrangement of permanent magnets, the gap between adjacent conductor plates, etc.), making accurate pre-calculation difficult. Therefore, when eddy current dampers are installed on a structure, the ability to adjust the damping characteristics of the damper on-site is necessary to achieve the best structural vibration reduction control effect. However, existing integrated eddy current dampers have difficulty achieving the aforementioned function of adjusting the damping characteristic parameters of the damper on-site.

[0007] The above analysis shows that existing tuned mass dampers for vibration control of tall cylindrical structures lack the ability to adjust the stiffness and damping parameters on-site, thus affecting their ability to achieve optimal structural vibration control. Therefore, developing a tuned mass damper for vibration control of tall cylindrical structures with on-site stiffness and damping parameter adjustment capabilities has significant practical engineering implications. Summary of the Invention

[0008] This invention provides a cylindrical tall structure wind vibration control tuned mass damper with adjustable stiffness and damping, as well as its design and adjustment methods. The purpose is to solve the problem that existing suspended frequency-tuned mass dampers for cylindrical tall structures (e.g., chimneys) are difficult to adjust on-site, thus affecting the vibration reduction effect of the damper structure.

[0009] This invention is achieved through the following technical solution: A cylindrical tall structure wind vibration control tuned mass damper with adjustable stiffness and damping, the damper comprising a ring-shaped moving mass unit, a suspension unit, an adjustable stiffness unit, a ring-shaped fixed support platform, and an adjustable damping unit; The ring-shaped moving mass unit is suspended and connected to the top of the cylindrical structure via a suspension unit. An adjustable stiffness unit is provided between the ring-shaped moving mass unit and the cylindrical structure to adjust the overall stiffness and natural frequency of the tuned mass damper. The ring-shaped fixed support platform is located below the ring-shaped moving mass unit and is fixed to the cylindrical structure.

[0010] A wind-induced vibration control tuned mass damper for a cylindrical tall structure with adjustable stiffness and damping, wherein the suspension unit includes a suspension bracket and an adjustable length suspension cable; the suspension bracket is horizontally connected to the top of the structure; the upper end of the suspension cable is connected to the suspension bracket, and the lower end of the suspension cable is connected to a ring-shaped moving mass unit; the number of suspension brackets is [number], and they are evenly arranged around the cylindrical tall structure.

[0011] A tuned mass damper for wind-induced vibration control of a cylindrical tall structure with adjustable stiffness and damping is disclosed. The upper surface of the annular moving mass unit is connected to a suspension cable, and an annular conductive copper plate is installed on the lower surface of the annular moving mass unit. An adjustable stiffness unit is provided between the annular moving mass unit and the cylindrical structure at the connection between the suspension cable and the annular moving mass unit.

[0012] A cylindrical tall structure wind vibration control tuned mass damper with adjustable stiffness and damping, wherein the adjustable stiffness unit includes upper and lower support members, left and right support members, four equal-length inclined force transmission rods, one horizontal guide rod, two adjusting nuts and two springs; the upper and lower support members, left and right support members and four equal-length inclined force transmission rods are connected by bolt hinges to form a rhombic mechanism; The left and right support members are provided with coaxial through holes, and the horizontal guide rod is inserted into the through holes of the left and right support members and extends outward. A spring and an adjusting nut are respectively provided at the extended end. The adjusting nut is threadedly connected to the horizontal guide rod; simultaneously, by rotating the adjusting nut, the angle between the oblique force transmission rod and the horizontal guide rod can be adjusted. The adjustable stiffness unit is connected to the cylindrical structure and the ring-shaped moving mass unit through upper and lower support members and connecting bolts, respectively.

[0013] A cylindrical, tall structure wind-induced vibration control tuned mass damper with adjustable stiffness and damping is disclosed. The adjustable damping unit includes an annular fixed support platform, above which is an annular magnetic guide plate. The annular fixed support platform and the annular magnetic guide plate are connected by bolts with adjustable height. The upper surface of the annular magnetic guide plate is provided with multiple permanent magnets, which are uniformly distributed circumferentially on the annular magnetic guide plate, and the magnetic poles of any two adjacent permanent magnets are oriented in opposite directions.

[0014] A cylindrical, tall structure wind-induced vibration control tuned mass damper with adjustable stiffness and damping is disclosed. By using an adjustable height bolt, the distance between the annular magnetic plate and the permanent magnet on its upper surface and the annular conductive copper plate fixed on the lower surface of the annular moving mass unit can be changed, thereby altering the damping parameters of the tuned mass damper.

[0015] A design method for a wind-induced vibration control tuned mass damper for a cylindrical tall structure with adjustable stiffness and damping, the design method comprising the following steps: Step 1: Determine the design mass of the tuned mass damper m Design stiffness k and design damping parameters c ; Step 2: Design the mass of the ring-shaped moving mass unit and the ring-shaped conductive copper plate, so that their total mass equals the design mass of the tuned mass damper. m ; Step 3: Based on the expected swing amplitude of the ring-shaped moving mass unit of the tuned mass damper. Δ Determine the length of the suspension cable for the tuned mass damper. l , Δ / l The ratio is less than 0.05; Step 4: Stiffness provided by each adjustable stiffness element Calculate according to formula (1), (1) Step 5: Rotate the two adjusting nuts in the adjustable stiffness unit to make the angle between the oblique force transmission rod and the horizontal guide rod... , which satisfies formula (2) (2) In the formula, It refers to the stiffness of the spring; Step Six: Establish a model relationship between the damping coefficient of the adjustable damping unit and the distance between the permanent magnet and the annular conductive copper plate, and formulate the model based on the design damping parameters of the tuned mass damper. c Calculate the design distance between the permanent magnet and the annular conductive copper plate; By adjusting the height of the adjustable height bolt, the distance between the permanent magnet and the annular conductive copper plate can meet the above design requirements.

[0016] A method for adjusting a cylindrical tall structure wind-induced vibration control tuned mass damper with adjustable stiffness and damping is provided. When the stiffness and damping parameters of the tuned mass damper need to be adjusted after it has been installed on site, the method provided in steps four to six of the design method for the cylindrical tall structure wind-induced vibration control tuned mass damper with adjustable stiffness and damping can be used. The stiffness and damping parameters of the tuned mass damper can be adjusted by adjusting the position of the adjusting nut and the height of the adjustable height bolt.

[0017] The beneficial effects of this invention are: 1. The tuned mass damper of the present invention includes a variable stiffness device between the cylindrical tower structure and the [structure name missing]. By introducing the variable stiffness device, a longer pendulum suspension device can be used when the natural frequency of the cylindrical tower structure is high, which facilitates the construction of the suspended tuned mass damper.

[0018] 2. By adjusting the position of the adjusting nut in the adjustable stiffness unit, the connection stiffness between the cylindrical tower structure and the ring-shaped moving mass unit provided by the adjustable stiffness unit can be changed, thereby achieving the goal of conveniently adjusting the natural frequency of the suspended tuned mass damper at the installation site.

[0019] 3. The tuned mass damper of this invention incorporates an eddy current damping device composed of a permanent magnet, a magnetically conductive plate, and an annular conductive copper plate. Compared to traditional viscous fluid dampers, the damping device in the tuned mass damper of this invention has the advantages of fast response speed and maintenance-free operation.

[0020] 4. In this invention, the height of the magnetic plate can be easily adjusted using the height adjustment component, thereby adjusting the damping parameters. This is highly beneficial for adjusting the damping parameters of the suspended tuned mass damper at the installation site, facilitating the optimal structural vibration reduction effect of the tuned mass damper. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the main structure of the present invention; Figure 3 This is a magnified view of a damping element. Figure 4 for Figure 2 Cross-sectional view along direction AA; Figure 5 for Figure 2 Cross-sectional view along the BB direction; Figure 6 This is a schematic diagram of the variable stiffness device of the present invention.

[0022] Explanation of the labels in the diagram: 1. Circular moving mass unit; 2. Suspension unit; 3. Adjustable stiffness unit; 4. Circular fixed support platform; 5. Adjustable damping unit; 6. Cylindrical structure; 7. Suspension bracket; 8. Suspension cable; 9. Circular conductive copper plate; 10. Circular magnetic plate; 11. Adjustable height bolt; 12. Permanent magnet; 13. Connecting bolt; 14. Upper and lower support components; 18. Left and right support components; 15. Diagonal force transmission rod; 16. Spring; 17. Adjusting nut; 19. Horizontal guide rod. Detailed Implementation

[0023] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this disclosure. Therefore, the drawings and description are to be considered exemplary in nature and not restrictive.

[0024] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this disclosure, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joint" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or connections that allow for communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0026] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] The following disclosure provides numerous different embodiments or examples for implementing various structures of this disclosure. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this disclosure. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this disclosure, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0028] The preferred embodiments of this disclosure are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0029] like Figure 1 and 2 As shown, a cylindrical tall structure wind vibration control tuned mass damper with adjustable stiffness and damping includes: a ring-shaped moving mass unit 1, a suspension unit 2, an adjustable stiffness unit 3, a ring-shaped fixed support platform 4, and an adjustable damping unit 5. Furthermore, the annular motion mass unit 1 is suspended and connected to the top of the cylindrical structure 6 via the suspension unit 2. An adjustable stiffness unit 3 is provided between the annular motion mass unit 1 and the cylindrical structure 6 to adjust the overall stiffness and natural frequency of the tuned mass damper. The annular fixed support platform 4 is located below the annular motion mass unit 1 and is fixed to the cylindrical structure 6.

[0030] Furthermore, such as Figure 4 As shown, the suspension unit 2 includes a suspension bracket 7 and an adjustable length suspension cable 8; the suspension bracket 7 is horizontally connected to the top of the structure; the upper end of the suspension cable 8 is connected to the suspension bracket 7, and the lower end of the suspension cable 8 is connected to the ring-shaped moving mass unit 1; the number of suspension brackets 7 is 4, and they are evenly arranged around the cylindrical towering structure.

[0031] Furthermore, such as Figure 3 As shown, the upper surface of the annular motion mass unit 1 is connected to the suspension cable 8, and an annular conductive copper plate 9 is installed on the lower surface of the annular motion mass unit 1; at the connection between the suspension cable 8 and the annular motion mass unit 1, an adjustable stiffness unit 3 is provided between the annular motion mass unit 1 and the cylindrical structure 6.

[0032] Furthermore, such as Figure 6 As shown, the adjustable stiffness unit 3 includes upper and lower support members 14, left and right support members 18, four equal-length inclined force transmission rods 15, one horizontal guide rod 19, two adjusting nuts 17 and two springs 16; the upper and lower support members 14, left and right support members 18 and four equal-length inclined force transmission rods 15 are connected by bolt hinges to form a rhomboid mechanism. Furthermore, the left and right support members 18 are provided with coaxial through holes, and the horizontal guide rod 19 is inserted into the through holes of the left and right support members 18 and extends outward. A spring 16 and an adjusting nut 17 are respectively provided at the extended end. Furthermore, the adjusting nut 17 is threadedly connected to the horizontal guide rod 19; simultaneously, by rotating the adjusting nut 17, the angle between the oblique force transmission rod 15 and the horizontal guide rod 19 can be adjusted. The adjustable stiffness unit 3 is connected to the cylindrical structure 6 and the ring-shaped moving mass unit 1 via the upper and lower support members 14 and the connecting bolts 13, respectively.

[0033] Furthermore, such as Figure 5 As shown, the adjustable damping unit 5 includes an annular fixed support platform 4, and an annular magnetic guide plate 10 is provided above the annular fixed support platform 4. The annular fixed support platform 4 and the annular magnetic guide plate 10 are connected by an adjustable height bolt 11. The upper surface of the annular magnetic guide plate 10 is provided with a plurality of permanent magnets 12. The permanent magnets 12 are evenly distributed circumferentially on the annular magnetic guide plate 10, and the magnetic poles of any two adjacent permanent magnets 12 are oriented in opposite directions.

[0034] Furthermore, by using the adjustable height bolt 11, the distance between the annular magnetic plate 10 and the permanent magnet 12 on its upper surface and the annular conductive copper plate 9 fixed on the lower surface of the annular moving mass unit 1 can be changed, thereby changing the damping parameters of the tuned mass damper.

[0035] Furthermore, a design method for a wind-induced vibration control tuned mass damper for a cylindrical tall structure with adjustable stiffness and damping includes the following steps: Step 1: Determine the design mass of the tuned mass damper m Design stiffness k and design damping parameters c ; Step 2: Design the masses of the ring-shaped moving mass unit 1 and the ring-shaped conductive copper plate 9, so that their total mass is equal to the design mass of the tuned mass damper. m ; Step 3: Based on the expected swing amplitude of the ring-shaped moving mass unit 1 of the tuned mass damper. Δ Determine the length of the suspension cable 8 of the tuned mass damper. l , Δ / l The ratio is less than 0.05; Step 4: Stiffness provided by each adjustable stiffness element 3 Calculate according to formula (1), (1) Step 5: Rotate the two adjusting nuts 17 in the adjustable stiffness unit 3 to make the angle between the oblique force transmission rod 15 and the horizontal guide rod 19 so that... , which satisfies formula (2) (2) In the formula, This refers to the stiffness of spring 16; Step 6: Establish a model relationship between the damping coefficient of the adjustable damping unit 5 and the distance between the permanent magnet 12 and the annular conductive copper plate 9, and based on the design damping parameters of the tuned mass damper. c Calculate the design distance between the permanent magnet 12 and the annular conductive copper plate 9; Furthermore, by adjusting the height of the adjustable height bolt 11, the distance between the permanent magnet 12 and the annular conductive copper plate 9 is made to meet the above design requirements.

[0036] Furthermore, when the tuned mass damper needs to be adjusted in terms of stiffness and damping parameters after it has been installed on site, the method provided in steps four to six above can be used to adjust the stiffness and damping parameters of the tuned mass damper by adjusting the position of the adjusting nut 17 and the height of the adjustable height bolt 11.

Claims

1. A cylindrical tall structure wind-induced vibration control tuned mass damper with adjustable stiffness and damping, characterized in that: The damper includes a ring-shaped moving mass unit (1), a suspension unit (2), an adjustable stiffness unit (3), a ring-shaped fixed support platform (4), and an adjustable damping unit (5). The ring-shaped moving mass unit (1) is suspended and connected to the top of the cylindrical structure (6) through the suspension unit (2). An adjustable stiffness unit (3) is provided between the ring-shaped moving mass unit (1) and the cylindrical structure (6) to adjust the overall stiffness and natural frequency of the tuned mass damper. The ring-shaped fixed support platform (4) is located below the ring-shaped moving mass unit (1) and is fixed to the cylindrical structure (6). The adjustable stiffness unit (3) includes upper and lower support members (14), left and right support members (18), four equal-length inclined force transmission rods (15), one horizontal guide rod (19), two adjusting nuts (17) and two springs (16); the upper and lower support members (14), left and right support members (18) and the four equal-length inclined force transmission rods (15) are connected by bolt hinges to form a rhombic mechanism; The left and right support members (18) are provided with coaxial through holes. The horizontal guide rod (19) is inserted into the through holes of the left and right support members (18) and extends outward. A spring (16) and an adjusting nut (17) are respectively provided at the extended end. The adjusting nut (17) is connected to the horizontal guide rod (19) by a thread; at the same time, by rotating the adjusting nut (17), the included angle between the inclined force transmission rod (15) and the horizontal guide rod (19) can be adjusted. The adjustable stiffness unit (3) is connected to the cylindrical structure (6) and the ring-shaped moving mass unit (1) respectively through the upper and lower support members (14) and the connecting bolts (13); The adjustable damping unit (5) includes an annular fixed support platform (4), and an annular magnetic guide plate (10) is provided above the annular fixed support platform (4). The annular fixed support platform (4) and the annular magnetic guide plate (10) are connected by bolts (11) with adjustable height. The upper surface of the annular magnetic guide plate (10) is provided with a plurality of permanent magnets (12). The permanent magnets (12) are evenly distributed circumferentially on the annular magnetic guide plate (10), and the magnetic poles of any two adjacent permanent magnets (12) are opposite in orientation.

2. The cylindrical tall structure wind vibration control tuned mass damper with adjustable stiffness and damping according to claim 1, characterized in that: The suspension unit (2) includes a suspension bracket (7) and an adjustable length suspension cable (8); the suspension bracket (7) is horizontally connected to the top of the structure; the upper end of the suspension cable (8) is connected to the suspension bracket (7), and the lower end of the suspension cable (8) is connected to the ring motion mass unit (1); the number of suspension brackets (7) is 4, and they are evenly arranged around the cylindrical towering structure.

3. A cylindrical tall structure wind-induced vibration control tuned mass damper with adjustable stiffness and damping according to claim 1, characterized in that: The upper surface of the ring-shaped moving mass unit (1) is connected to the suspension cable (8), and a ring-shaped conductive copper plate (9) is installed on the lower surface of the ring-shaped moving mass unit (1); at the connection between the suspension cable (8) and the ring-shaped moving mass unit (1).

4. A design method for a stiffness and damping adjustable cylindrical tall structure wind-induced vibration control tuned mass damper according to any one of claims 1-3, characterized in that: The design method includes the following steps: Step 1: Determine the design mass of the tuned mass damper m Design stiffness k and design damping parameters c ; Step 2: Design the mass of the ring-shaped moving mass unit (1) and the ring-shaped conductive copper plate (9) so that their total mass is equal to the design mass of the tuned mass damper. m ; Step 3: Based on the expected swing amplitude of the ring-shaped moving mass unit (1) of the tuned mass damper. Δ Determine the length of the suspension cable (8) of the tuned mass damper. l , Δ / l The ratio is less than 0.05; Step 4: Stiffness provided by each adjustable stiffness element (3) Calculate according to formula (1), (1) Step 5: Rotate the two adjusting nuts (17) in the adjustable stiffness unit (3) so that the angle between the inclined force transmission rod (15) and the horizontal guide rod (19) is... , satisfying formula (2) (2) In the formula, It is the stiffness of the spring (16); Step 6: Establish a model relationship between the damping coefficient of the adjustable damping unit (5) and the distance between the permanent magnet (12) and the annular conductive copper plate (9), and formulate the model based on the design damping parameters of the tuned mass damper. c Calculate the design distance between the permanent magnet (12) and the annular conductive copper plate (9); By adjusting the height of the adjustable height bolt (11), the distance between the permanent magnet (12) and the annular conductive copper plate (9) is made to meet the above design requirements.

5. The method for adjusting a stiffness and damping adjustable cylindrical tall structure wind vibration control tuned mass damper according to any one of claims 1-3, characterized in that: When the tuned mass damper is installed on site and its stiffness and damping parameters need to be adjusted, the method provided in steps four to six of claim 4 can be used to adjust the stiffness and damping parameters of the tuned mass damper by adjusting the position of the adjusting nut (17) and the height of the adjustable height bolt (11).

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