Vibration control system based on tremor elastic rod

Abstract

A vibration control system based on a tremor elastic rod relates to the technical field of civil engineering structure vibration control, and comprises a tuning damping block connected to the surface of a civil engineering structure through a spring; the elastic support is connected to the bottom end of the tuning damping block and used for supporting the tuning damping block; and the at least two vibration elastic rods are symmetrically connected to the two sides of the tuning damping block, one end of each vibration elastic rod extends outwards and is connected with a balancing weight, and the vibration elastic rods can vibrate to dissipate energy when the tuning damping block vibrates. When the civil engineering structure vibrates, effective energy dissipation and vibration reduction can be conducted through tremor of the tremor elastic rod, especially at the tail stage of shaking, when the shaking amplitude becomes small but the frequency becomes large rapidly, the tremor elastic rod can shake at the larger frequency, the end balancing weight of the tremor elastic rod shakes more frequently, and the vibration reduction effect is better. And therefore, the energy dissipation and vibration reduction effects are exerted to a greater extent, and the safety and comfort of the civil engineering structure under the action of earthquakes or other loads are effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of civil engineering structure vibration control, in particular to a vibration control system based on a tremor elastic rod. Background Art

[0002] In the field of civil engineering, the vibration performance of structures has always been a crucial research topic. With the acceleration of urbanization and the growing demand for large-scale infrastructure construction, buildings and bridges are facing increasingly complex and changeable vibration environments. From the perspective of natural factors, earthquakes occur frequently, and the seismic waves they generate will impact buildings and bridges with different frequencies and amplitudes, causing structural safety problems; in addition, wind loads, traffic loads, etc. also continue to act on these structures. Long-term accumulated vibrations may cause structural fatigue damage and comfort problems, and even threaten the safety and stability of buildings and bridges in extreme cases.

[0003] In order to meet the above challenges, various vibration control systems have been developed in the prior art. For example, elastic dampers use elastic elements to generate restoring force and consume vibration energy through damping elements. However, the energy consumption efficiency of traditional elastic dampers is closely related to the vibration frequency. In the initial stage when the vibration frequency is low, the energy consumption effect is acceptable, but when the vibration enters the final stage and the frequency increases sharply, its energy consumption capacity is limited and cannot effectively meet the high-frequency vibration control needs of civil engineering structures.

[0004] Some vibration control systems use a combination of a mass block and a spring-damper, attempting to enhance the control effect through the inertia of the mass block. However, the setting of the mass block increases the complexity and deadweight of the system, and puts forward higher requirements on the structural design and bearing capacity of buildings or bridges. In actual applications, there is still a lot of room for optimization of its vibration reduction performance, especially in the final stage of high-frequency vibration. It is difficult to achieve the ideal control effect, and it is impossible to fully guarantee the comfort, safety and durability of buildings and bridges in complex vibration environments. Summary of the invention

[0005] The purpose of the present invention is to provide a vibration control system based on a tremor elastic rod, so as to achieve a greater degree of energy dissipation and vibration reduction effect at the end stage of shaking, and effectively improve the high-frequency vibration control performance of civil engineering structures.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solution: a vibration control system based on a trembling elastic rod, comprising: A tuned damping mass, attached to the surface of a civil engineering structure by a spring; An elastic support, connected to the bottom end of the tuning damping block to support the tuning damping block; At least two vibration elastic rods are symmetrically connected to the two sides of the tuning damping block, one end of the vibration elastic rod extends outward and is connected to a counterweight block, and the vibration elastic rod can vibrate when the tuning damping block vibrates to dissipate energy and reduce vibration.

[0007] Preferably, the tuning damping block is disposed in a container, the elastic support is installed at the bottom of the container, and the container is filled with a damping medium around the tuning damping block.

[0008] More preferably, a through hole is formed on the side wall of the container for the vibration elastic rod to pass through, and the shape of the through hole matches the shape of the vibration elastic rod and a distance is provided between the two to ensure that the vibration elastic rod can vibrate freely.

[0009] More preferably, the damping medium is one or a combination of granular matter, fluid or powdered matter.

[0010] More preferably, a supporting component for supporting the rod shaft is also provided in the middle portion of the vibration elastic rod.

[0011] More preferably, the supporting component comprises a Y-shaped bracket and an inner side surface of the Y-shaped bracket is provided with an elastic buffer pad for contacting the vibration elastic rod.

[0012] In addition, the present invention also provides a bridge, which is provided with the vibration control system based on the vibration elastic rod. At the same time, the present invention also provides a building, which is provided with the vibration control system based on the vibration elastic rod.

[0013] Compared with the prior art, the present invention can effectively dissipate energy and reduce vibration through the vibration of the vibration elastic rod when the structure vibrates, especially at the end stage of shaking, when the shaking amplitude becomes smaller but the frequency increases rapidly, the vibration elastic rod can shake at a higher frequency and its end shakes more frequently, thereby achieving a greater degree of energy dissipation, effectively improving the high-frequency vibration control effect of the engineering structure, reducing the risk of damage to the structure under earthquakes or other loads, and enhancing the comfort, safety and stability of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure in the embodiment; Figure 2 Schematic diagram of the vibration elastic rod in the embodiment when it vibrates.

[0015] In the figure: 1——Tuned damping block 2——Elastic support 3——Vibration elastic rod 4——Container 5——damping medium 6——support component. DETAILED DESCRIPTION

[0016] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0017] It should be noted in advance that, in the present invention, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the present invention, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact through another feature between them.

[0018] like Figure 1 As shown, the vibration control system based on the tremor elastic rod includes: A tuned damping mass 1 is connected to the surface of the civil engineering structure via a spring; An elastic support 2, connected to the bottom end of the tuning damping block 1 to support the tuning damping block 1; Two vibration elastic rods 3 are symmetrically connected to the two sides of the tuning damping block 1. One end of the vibration elastic rod 3 extends outward and is connected to a counterweight block. The vibration elastic rod 3 can vibrate when the tuning damping block 1 vibrates to dissipate energy and reduce vibration.

[0019] Those skilled in the art should know that the vibration elastic rod 3 is symmetrically connected to the two sides of the tuning damping block 1. This symmetrical connection method makes the vibration elastic rod 3 be affected by the inertia force and restoring force from the tuning damping block 1 when the tuning damping block 1 vibrates. When the tuning damping block 1 shakes upward, the vibration elastic rod 3 will be subjected to an upward pulling force, causing it to deform; when the tuning damping block 1 shakes downward, the vibration elastic rod 3 will be subjected to downward pressure, further aggravating its deformation. This repeated deformation and recovery process, such as Figure 2 As shown, the vibration elastic rod 3 can be made to vibrate.

[0020] Secondly, one end of the vibration elastic rod 3 is connected to a counterweight block, which makes the vibration elastic rod 3 have greater inertia during the shaking process. When the tuning damping block 1 vibrates, the counterweight block will generate additional torque due to inertia, further aggravating the vibration amplitude and frequency of the vibration elastic rod 3. In addition, the vibration elastic rod 3 itself has a certain elasticity and flexibility, and can produce elastic deformation and recovery during the shaking process. This elastic property enables the vibration elastic rod 3 to continuously accumulate and release energy during the shaking process, thereby achieving continuous vibration energy consumption.

[0021] At the end of the shaking, when the shaking amplitude decreases but the frequency increases rapidly, the shaking frequency of the shaking elastic rod 3 will also increase. This is because under high-frequency shaking, the elastic deformation and recovery process of the shaking elastic rod 3 is faster, and the inertia effect of the counterweight block is more obvious, which makes the end of the shaking elastic rod 3 shake more frequently, thereby achieving a greater degree of energy dissipation and effectively improving the vibration reduction control effect of the structure during high-frequency vibration.

[0022] Furthermore, the tuning damping block 1 is arranged in a container 4, the elastic support 2 is installed at the bottom of the container 4, and the container 4 is filled with a damping medium 5 around the tuning damping block 1. The damping medium 5 can generate a damping force when the tuning damping block 1 shakes, increase the damping ratio of the system, further consume vibration energy, and enhance the vibration reduction effect. The side wall of the container 4 is provided with a through hole for the vibration elastic rod 3 to pass through. The shape of the through hole matches the shape of the vibration elastic rod 3 and a spacing is provided between the two to ensure that the vibration elastic rod 3 can vibrate freely.

[0023] The damping medium 5 is one or more combinations of granular substances, fluids or powdered substances, ensuring that it has suitable viscosity and fluidity. In addition, a screen or a diaphragm with elastic deformation capability can be provided in the through hole to prevent the damping medium from leaking out of the through hole. A deformable barrier enclosure can be provided on the periphery of the elastic support 2 to reduce the influence of the damping medium on the elastic support 2.

[0024] In addition, in some embodiments, if the shaft of the trembling elastic rod 3 is relatively long, a supporting component 6 for supporting the shaft may be further provided in the middle of the trembling elastic rod 3. The supporting component 6 includes a Y-shaped bracket and an elastic buffer pad for contacting the trembling elastic rod 3 is provided on the inner side of the Y-shaped bracket. Since the shaft of the trembling elastic rod 3 has a sufficiently large elastic deformation capacity, even if it collides with the elastic buffer pad on the Y-shaped bracket during the trembling process, it will not cause significant damage, and the purpose of energy consumption can be achieved as long as the trembling can be smoothly performed.

[0025] When the vibration control system based on the tremor elastic rod provided in the above embodiment is applied to a building or a bridge, it can be installed between the main beams of the upper and lower floors or between the bridge and the piers with reference to the existing shock absorbing mechanism.

[0026] When an earthquake occurs or the bridge deck shakes vertically due to a large load, the tuned damping block 1 fixedly connected to the bottom of the bridge will shake synchronously. Since the tuned damping block 1 is set in the container 4, the damping medium 5 filled in the container 4 will generate resistance to the shaking of the tuned damping block 1, consume part of the vibration energy, and play a preliminary vibration reduction role. The elastic support 2 is installed at the bottom of the container 4 and connected to the bottom end of the tuned damping block 1 to provide elastic support for the tuned damping block 1. During the shaking of the tuned damping block 1, the elastic support 2 will undergo elastic deformation, absorb and buffer part of the vibration energy, and further reduce the impact of vibration on the bridge.

[0027] At the same time, at least two vibration elastic rods 3 are symmetrically connected to both sides of the tuning damping block 1, and one end thereof extends outward and is connected to a counterweight block. When the tuning damping block 1 shakes vertically, the vibration elastic rod 3 will be affected by the inertial force and the restoring force, and will vibrate up and down. Since the vibration elastic rod 3 has a certain length and elasticity, it will produce elastic deformation and recovery during the shaking process, consuming vibration energy. Especially at the end stage of shaking, when the shaking amplitude becomes smaller but the frequency increases rapidly, the vibration frequency of the vibration elastic rod 3 will also increase accordingly, and its end will shake more frequently, thereby achieving a greater degree of energy consumption, and effectively improving the vibration reduction effect of the bridge during high-frequency vertical shaking.

[0028] The present invention arranges a tuning damping block 1 in a container 4 filled with a damping medium 5, and uses an elastic support 2 to support the tuning damping block, and at the same time symmetrically connects vibration elastic rods 3 on both sides of the tuning damping block 1. When the civil engineering structure vibrates, the tuning damping block 1 drives the vibration elastic rods 3 to shake, and the vibration elastic rods 3 vibrate and consume energy during the shaking process, especially at the end of the shaking stage when the shaking frequency is high, the vibration frequency of the vibration elastic rods 3 increases, achieving a greater degree of energy consumption, effectively improving the vibration reduction control effect of the structure during high-frequency vibration, reducing the risk of damage to the civil engineering structure, and enhancing its safety and stability.

[0029] In order to make it easier for ordinary technicians in the field to understand the improvements of the present invention over the prior art, some drawings and descriptions of the present invention have been simplified, and the above-mentioned embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A vibration control system based on a vibrating elastic rod, characterized in that: include: A tuned damping mass (1) connected to a surface of a civil engineering structure via a spring; An elastic support (2) connected to the bottom end of the tuning damping block (1) for supporting the tuning damping block (1); At least two vibration elastic rods (3) are symmetrically connected to two sides of the tuning damping block (1); one end of the vibration elastic rod (3) extends outward and is connected to a counterweight block; the vibration elastic rod (3) can vibrate when the tuning damping block (1) vibrates to dissipate energy and reduce vibration.

2. The vibration control system based on the tremor elastic rod according to claim 1, characterized in that: The tuning damping block (1) is arranged in a container (4), the elastic support (2) is installed on the bottom of the container (4), and the container (4) is filled with a damping medium (5) around the tuning damping block (1).

3. The vibration control system based on the tremor elastic rod according to claim 2, characterized in that: The side wall of the container (4) is provided with a through hole for the vibration elastic rod (3) to pass through, the shape of the through hole matches the shape of the vibration elastic rod (3) and a distance is provided between the two to ensure that the vibration elastic rod (3) can vibrate freely.

4. The vibration control system based on the tremor elastic rod according to claim 1, characterized in that: The damping medium (5) is one or a combination of granular matter, fluid or powdered matter.

5. The vibration control system based on the tremor elastic rod according to claim 1, characterized in that: A supporting component (6) for supporting the rod body is also provided in the middle of the vibration elastic rod (3).

6. The vibration control system based on the tremor elastic rod according to claim 5, characterized in that: The supporting component (6) comprises a Y-shaped bracket, and the inner side surface of the Y-shaped bracket is provided with an elastic buffer pad for contacting the vibration elastic rod (3).

7. A bridge, characterized in that: A vibration control system based on a tremor elastic rod according to any one of claims 1-6 is provided.

8. A building, characterized in that: A vibration control system based on a tremor elastic rod according to any one of claims 1-6 is provided.

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