A vibration damping device for tall structures

Abstract

This invention relates to the field of structural energy dissipation and vibration reduction technology, and discloses a vibration reduction device for tall structures, including a structure body, the cylindrical wall of a cylindrical structure in the tall structure, or the inner wall of the structure; a mass tuning assembly that absorbs structural vibration energy using mass; and a force-sharing assembly for distributing the longitudinal force on the mass tuning assembly, thereby cooperating with the mass tuning assembly to achieve multi-directional vibration reduction. The force-sharing assembly includes a tension damper II for connection to the mass tuning assembly, a main tension string connected to the end of the tension damper II, and a mounting base installed on the inner wall of the structure. By using the main and auxiliary rotating wheels to relax the main tension string while simultaneously tightening the auxiliary tension string, the tension damper I is activated, thereby converting the vertical force on the connecting rod and the mass tuning ball into multiple components such as lateral and oblique forces, reducing the vertical force by sacrificing the travel of the connecting rod.

Description

Technical Field

[0001] This invention relates to the field of structural energy dissipation and vibration reduction technology, specifically to a vibration reduction device for tall structures. Background Technology

[0002] Tall structures, such as high-rise buildings, television towers, and chimneys, are often subjected to external dynamic forces such as wind loads and seismic forces due to their height and unique structural characteristics. Under these external dynamic forces, tall structures are prone to significant vibrations and deformations, which can lead to structural damage or even collapse in severe cases. Therefore, how to effectively reduce the vibration of tall structures under wind loads and seismic forces, and ensure the safety and performance of the structures, has become an important research topic in the field of civil engineering.

[0003] Tube structures are a common type of tall structural element, typically characterized by their considerable height and slender shape. Due to their shape, wind loads on their surfaces result in complex wind pressure distribution, making them prone to significant horizontal and torsional vibrations. Furthermore, horizontal seismic forces (transverse waves) and vertical seismic forces (longitudinal waves) during earthquakes also cause significant vibrations in tube structures.

[0004] Seismic waves can be divided into transverse waves (S-waves) and longitudinal waves (P-waves). S-waves cause horizontal ground vibrations, while longitudinal waves cause vertical ground vibrations. Existing seismic damping technologies are mainly designed for S-waves, with less impact on longitudinal waves. This can easily lead to ineffective control of vertical vibrations in structures during earthquakes, resulting in more serious structural problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a vibration damping device for tall structures, solving the problem that some vibration damping technologies are mainly designed for transverse waves, while having little impact on longitudinal waves.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a vibration damping device for tall structures, comprising,

[0007] The structure refers to the cylindrical wall of a tall structure, or the inner wall of a structure.

[0008] Mass-tuned components utilize mass to absorb structural vibration energy;

[0009] The force-sharing component is used to distribute the longitudinal force on the mass-tuned component and work with the mass-tuned component to achieve multi-directional vibration reduction. The force-sharing component includes a tension damper II for connection with the mass-tuned component, a main tension string connected to the end of the tension damper II, a mounting base installed on the inner wall of the structure, a main wheel and a secondary wheel rotating in the middle of the mounting base, and a secondary tension string sleeved on the outside of the secondary wheel.

[0010] Tension-type damper one is a damping structure used to reduce the amplitude under various component forces.

[0011] Preferably, the mass tuning assembly includes a mounting block installed on the inner wall of the structure, and a connecting rod sliding in the middle of the mounting block. The other end of the connecting rod is connected to a crossbar. A notch is opened in the middle of the crossbar, and a support rod passes through the middle of the notch. A mass tuning ball is fixedly installed at the bottom of the support rod, and a positioning ball for positioning is installed at the top of the support rod.

[0012] Preferably, the main wheel and the auxiliary wheel are eccentric circular structures, rotating in the middle of the mounting base via a connecting shaft. The end of the main drawstring away from the second tension damper is fixed in the outer track of the main wheel, and the end of the auxiliary drawstring away from the auxiliary wheel is connected to the end of the first tension damper.

[0013] Preferably, the tension damper includes a main rod and a secondary rod, the main rod and the secondary rod are respectively fixed to the ends of two secondary tension strings, and the secondary rod slides in the middle of the main rod. A damping spring is sleeved on the outer periphery of the secondary rod, one end of the damping spring is fixedly connected to the inner wall of the main rod, and the other end of the damping spring is fixedly connected to the outer side of the secondary rod.

[0014] Preferably, the tension damper further includes an oil reservoir and an oil reservoir, both of which are located inside the main rod. The outer edge of the oil reservoir is provided with multiple oil passage holes, and the oil reservoir is connected to the oil reservoir through the oil passage holes. A piston is also fixedly connected to the end of the auxiliary rod, and the piston slides inside the oil reservoir.

[0015] Preferably, a slider is fixedly connected to the end of the connecting rod, the slider is slidably connected inside the mounting block, and a spring damping rod is rotatably connected to the bottom of the connecting rod, the other end of the spring damping rod being rotatably connected to the inner wall of the structure.

[0016] Preferably, the tension damper further includes two connectors, which are respectively fixedly connected to the ends of the main rod and the auxiliary rod for connection with an external structure.

[0017] Preferably, a positioning sleeve is also fixedly connected to the inner side of the mounting base, and the main drawstring passes through the middle of the positioning sleeve to guide and position the main drawstring.

[0018] Preferably, multiple sets of spring damping rods are rotatably connected between the two structures, and the multiple sets of spring damping rods are distributed in a cross pattern.

[0019] Preferably, the inner diameter of the notch is larger than the outer diameter of the support rod and smaller than the outer diameter of the positioning ball, in order to ensure that the mass tuning ball can swing freely at multiple angles.

[0020] Working Principle: When a tall structure is subjected to external forces such as wind loads or earthquakes, the structure will sway from side to side. Simultaneously, the mass-tuned sphere, under the action of the support rods and positioning balls, will swing freely in the middle of the gap, thereby adapting to the structure's center of gravity and exhibiting a reaction force opposite to the direction of the applied force to reduce the swaying of the tall structure. At the same time, the spring damping rods will initially eliminate the vertical vibration force generated by the mass-tuned sphere. During vertical vibration, the force will cause the mass-tuned sphere to move downwards... The dropper drives the connecting rod to move. At this time, the connecting rod can act on the main drawstring through the second tension damper. The main drawstring will then pull the main wheel to rotate, thereby eliminating the force. When the main wheel rotates, it will drive the auxiliary wheel to rotate synchronously. The auxiliary wheel will then coil and pull the auxiliary drawstring, which will act on the first tension damper. In this way, the force of vertical vibration can be converted into components in multiple directions such as horizontal and oblique. By sacrificing the travel of the connecting rod, vertical swaying is reduced, thereby further reducing the impact of vertical vibration.

[0021] When a tension force is applied to one end of the tension-type damper, it first acts on the auxiliary rod, causing it to move away from the main rod and compressing the damping spring, thus initially eliminating the force. At the same time, as the auxiliary rod moves, it also acts on the piston, causing the piston to slide inside the first oil reservoir. Because the piston and the first oil reservoir are interference-fitted, a negative pressure is formed inside the first oil reservoir when the piston moves. At this time, the hydraulic oil stored in the second oil reservoir enters the first oil reservoir through the oil passage. Because the oil passage is small, the amount of oil entering per unit time is small, thus slowing down the piston's movement speed and achieving shock absorption. Secondly, when the damping spring acts on the auxiliary rod to reset the piston, it pushes the oil in the first oil reservoir back into the second oil reservoir through the oil passage, so as to perform multiple shock absorption actions.

[0022] This invention provides a vibration damping device for tall structures. It has the following beneficial effects:

[0023] 1. This invention utilizes the main and auxiliary rotating wheels to relax the main drawstring while simultaneously tightening the auxiliary drawstring, thereby activating the tension damper and converting the vertical force on the connecting rod and the mass tuning ball into multiple components such as lateral and oblique forces. The vertical force is reduced by sacrificing the travel of the connecting rod.

[0024] 2. This invention uses a damping spring to initially alleviate the pulling force, and then works with a piston to act on the hydraulic oil inside oil reservoir one and oil reservoir two to further slow down the movement speed of the auxiliary rod, thereby achieving vibration reduction operation for tall structures. Attached Figure Description

[0025] Figure 1 This is a perspective view of the present invention;

[0026] Figure 2 This is a cross-sectional schematic diagram of the tension damper one in this invention;

[0027] Figure 3 This is a schematic diagram of the force-sharing component in this invention;

[0028] Figure 4 This is a schematic diagram of the mass tuning component in this invention;

[0029] Figure 5 This is a schematic diagram of the main rotor in this invention;

[0030] Figure 6 In this invention Figure 2 Enlarged view of point A in the middle.

[0031] The components are as follows: 1. Structure; 2. Mounting block; 3. Connecting rod; 4. Crossbar; 5. Spring damping rod one; 6. Notch; 7. Support rod; 8. Mass tuning ball; 9. Positioning ball; 10. Mounting seat; 11. Main wheel; 12. Auxiliary wheel; 13. Connecting shaft; 14. Auxiliary drawstring; 15. Main drawstring; 16. Positioning sleeve; 17. Tension type damper one; 1701. Main rod; 1702. Auxiliary rod; 1703. Piston; 1704. Oil reservoir one; 1705. Oil reservoir two; 1706. Oil passage hole; 1707. Damping spring; 1708. Connector; 18. Tension type damper two; 19. Spring damping rod two; 20. Slider. Detailed Implementation

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example:

[0034] Please see the appendix Figure 1 This invention provides a vibration damping device for tall structures, comprising:

[0035] Structure 1 is the cylindrical wall of the tall structure or the inner wall of the structure; multiple sets of spring damping rods 19 are rotatably connected between two structures 1, and the multiple sets of spring damping rods 19 are distributed in a cross shape. The multiple sets of spring damping rods 19 provide support and damping for the structure 1 itself, and prevent the structural frame of structure 1 from changing due to external forces.

[0036] Please see the appendix Figure 1 and attached Figure 4 The mass tuning assembly utilizes mass to absorb structural vibration energy. It includes a mounting block 2 installed on the inner wall of structure 1 and a connecting rod 3 sliding in the middle of the mounting block 2. The other end of the connecting rod 3 is connected to a crossbar 4. The connection of the connecting rod 3 and the crossbar 4 forms a beam installed between the two structures 1, providing a mounting position for the mass tuning assembly. A notch 6 is provided in the middle of the crossbar 4, through which a support rod 7 passes. A mass tuning ball 8 is fixedly installed at the bottom of the support rod 7, and a positioning ball 9 is installed at the top of the support rod 7. The support rod 7 passes through the middle of the notch 6. When the structure shifts due to external forces, the mass tuning ball 8 swings freely inside structure 1 via the support rod 7 and the notch 6, thereby adjusting the structure's center of gravity and generating a force opposite to the direction of the swing to reduce structural sway. Simultaneously, the positioning ball 9 ensures the stability of the connection between the mass tuning ball 8 and the crossbar 4, preventing the mass tuning ball 8 from falling off.

[0037] Please see the appendix Figure 1 and attached Figure 4 A slider 20 is fixedly connected to the end of the connecting rod 3. The slider 20 is slidably connected inside the mounting block 2. The slider 20 ensures the stability of the connection between the connecting rod 3 and the mounting block 2, and also provides space for the connecting rod 3 to move up and down. A spring damping rod 5 is rotatably connected to the bottom of the connecting rod 3. The other end of the spring damping rod 5 is rotatably connected to the inner wall of the structure 1. The spring damping rod 5 provides initial support for the connecting rod 3, and when subjected to longitudinal force, it can distribute the longitudinal force in the tilt direction to reduce longitudinal vibration.

[0038] The inner diameter of notch 6 is larger than the outer diameter of support rod 7 and smaller than the outer diameter of positioning ball 9, in order to ensure that mass tuning ball 8 can swing freely at multiple angles.

[0039] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 6The tension damper 17 is a damping structure used to reduce the amplitude under various component forces. The tension damper 17 includes a main rod 1701 and a secondary rod 1702. The main rod 1701 and the secondary rod 1702 are respectively fixed to the ends of the two secondary tension strings 14, and the secondary rod 1702 slides in the middle of the main rod 1701. When the end of the tension damper 17 is subjected to tension, it will first act on the secondary rod 1702, causing the secondary rod 1702 to move away from the main rod 1701. A damping spring 1707 is sleeved on the outer periphery of the secondary rod 1702. One end of the damping spring 1707 is fixedly connected to the inner wall of the main rod 1701, and the other end of the damping spring 1707 is fixedly connected to the outer side of the secondary rod 1702. When the secondary rod 1702 slides inside the main rod 1701, it will compress the damping spring 1707, thereby initially eliminating the force. The tension-type damper 17 also includes an oil reservoir 1704 and an oil reservoir 1705. Both oil reservoirs 1704 and 1705 are located inside the main rod 1701. Multiple oil passages 1706 are provided along the outer edge of oil reservoir 1704, which communicates with oil reservoir 1705 through the oil passages 1706. A piston 1703 is also fixedly connected to the end of the auxiliary rod 1702, and the piston 1703 slides inside oil reservoir 1704. The second oil reservoir 1705 contains hydraulic oil. When the auxiliary rod 1702 moves, it will also act on the piston 1703, which will create a negative pressure inside the first oil reservoir 1704. At this time, the hydraulic oil stored in the second oil reservoir 1705 will enter the first oil reservoir 1704 through the oil passage 1706. Since the oil passage 1706 is small, the amount of oil entering per unit time is small, thereby slowing down the movement speed of the piston 1703 and thus achieving damping and shock absorption.

[0040] The tension damper 17 also includes two connectors 1708, which are fixedly connected to the ends of the main rod 1701 and the auxiliary rod 1702, respectively, for connection with external structures.

[0041] Please see the appendix Figure 1 Appendix Figure 3 and attached Figure 5The force-sharing component is used to distribute the longitudinal force on the mass-tuned component, thus cooperating with the mass-tuned component to achieve multi-directional vibration reduction. The force-sharing component includes a tension damper 18 connected to the mass-tuned component, a main tension string 15 connected to the end of the tension damper 18, a mounting base 10 mounted on the inner wall of the structure 1, a main wheel 11 and a secondary wheel 12 rotating in the middle of the mounting base 10, and a secondary tension string 14 sleeved outside the secondary wheel 12. When subjected to vertical vibration, the force causes the mass-tuned ball 8 to fall, driving the connecting rod 3 to move. At this time, the tension damper 18 acts on the main tension string 15, which in turn pulls the main wheel 11 to rotate. Wheel 11 and auxiliary wheel 12 are eccentric circular structures and rotate in the middle of the mounting base 10 via connecting shaft 13. The end of the main drawstring 15 away from the second tension damper 18 is fixed in the outer track of the main drawstring 11. The end of the auxiliary drawstring 14 away from the auxiliary drawstring 12 is connected to the end of the first tension damper 17. When the main drawstring 11 rotates, the center of gravity of the main drawstring 11 and auxiliary wheel 12 changes, and the auxiliary drawstring 14 is wound and pulled, thus acting on the first tension damper 17. In this way, the force of vertical vibration can be converted into components in multiple directions such as horizontal and oblique. By sacrificing the travel of the connecting rod 3, vertical swaying is reduced, further reducing the impact of vertical vibration. A positioning sleeve 16 is also fixedly connected to the inner side of the mounting base 10. The main drawstring 15 passes through the middle of the positioning sleeve 16 to guide and position the main drawstring 15, preventing the main drawstring 15 from derailing due to the swaying of the tall structure.

[0042] It should be noted that the tension damper 218 and tension damper 17 used have the same structure.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vibration damping device for tall structures, characterized in that, include, The structure (1) is the cylindrical wall of a tall structure, or the inner wall of a structure; Mass-tuned components utilize mass to absorb structural vibration energy; The force-sharing component is used to distribute the longitudinal force on the mass tuning component and cooperate with the mass tuning component to achieve multi-directional vibration reduction. The force-sharing component includes a tension type damper II (18) for connection with the mass tuning component, a main tension string (15) connected to the end of the tension type damper II (18), a mounting base (10) installed on the inner wall of the structure (1), a main wheel (11) and a secondary wheel (12) rotating in the middle of the mounting base (10), and a secondary tension string (14) sleeved on the outside of the secondary wheel (12). Tension-type damper 1 (17) is a damping structure used to reduce the amplitude under each component force; The mass tuning assembly includes a mounting block (2) installed on the inner wall of the structure (1), and a connecting rod (3) sliding in the middle of the mounting block (2). The other end of the connecting rod (3) is connected to a crossbar (4). A notch (6) is opened in the middle of the crossbar (4). A support rod (7) passes through the middle of the notch (6). A mass tuning ball (8) is fixedly installed at the bottom of the support rod (7). A positioning ball (9) for positioning is installed at the top of the support rod (7). The main wheel (11) and the auxiliary wheel (12) are eccentric circular structures and rotate in the middle of the mounting base (10) via the connecting shaft (13). The end of the main tension string (15) away from the second tension damper (18) is fixed in the outer track of the main wheel (11), and the end of the auxiliary tension string (14) away from the auxiliary wheel (12) is connected to the end of the first tension damper (17).

2. A vibration damping device for tall structures according to claim 1, characterized in that, The tension damper (17) includes a main rod (1701) and a secondary rod (1702). The main rod (1701) and the secondary rod (1702) are respectively fixed to the ends of two secondary tension strings (14), and the secondary rod (1702) slides in the middle of the main rod (1701). A damping spring (1707) is sleeved on the outer periphery of the secondary rod (1702). One end of the damping spring (1707) is fixedly connected to the inner wall of the main rod (1701), and the other end of the damping spring (1707) is fixedly connected to the outer side of the secondary rod (1702).

3. A vibration damping device for tall structures according to claim 2, characterized in that, The tension damper (17) further includes an oil reservoir (1704) and an oil reservoir (1705). Both the oil reservoir (1704) and the oil reservoir (1705) are located inside the main rod (1701). The outer edge of the oil reservoir (1704) is provided with multiple oil passage holes (1706). The oil reservoir (1704) is connected to the oil reservoir (1705) through the oil passage holes (1706). The end of the auxiliary rod (1702) is also fixedly connected to a piston (1703). The piston (1703) slides inside the oil reservoir (1704).

4. A vibration damping device for tall structures according to claim 1, characterized in that, The connecting rod (3) is fixedly connected to a slider (20) at one end. The slider (20) is slidably connected inside the mounting block (2). The bottom of the connecting rod (3) is rotatably connected to a spring damping rod (5). The other end of the spring damping rod (5) is rotatably connected to the inner wall of the structure (1).

5. A vibration damping device for tall structures according to claim 2, characterized in that, The tension damper (17) further includes two connectors (1708), which are fixedly connected to the ends of the main rod (1701) and the auxiliary rod (1702) respectively, for connection with the external structure.

6. A vibration damping device for tall structures according to claim 1, characterized in that, A positioning sleeve (16) is also fixedly connected to the inner side of the mounting base (10). The main draw string (15) passes through the middle of the positioning sleeve (16) to guide and position the main draw string (15).

7. A vibration damping device for tall structures according to claim 1, characterized in that, Multiple sets of spring damping rods (19) are rotatably connected between the two structures (1), and the multiple sets of spring damping rods (19) are distributed in a cross shape.

8. A vibration damping device for tall structures according to claim 1, characterized in that, The inner diameter of the notch (6) is larger than the outer diameter of the support rod (7) and smaller than the outer diameter of the positioning ball (9), in order to ensure that the mass tuning ball (8) can swing freely at multiple angles.

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