Bridge anti-resonance system

Abstract

The utility model relates to a bridge anti-resonance system. Energy generated in transverse vibration of a bridge is effectively absorbed and dissipated through multiple damping mechanisms. Due to the comprehensive effect, the anti-resonance capacity of the bridge is remarkably enhanced, structural damage and fatigue damage caused by resonance are reduced, and the bridge can keep good stability when subjected to external transverse force due to stable installation and accurate matching of the transverse damping mechanism; the mechanism can flexibly respond to vibration through the combination of the mounting plate and the sliding balls, necessary supporting and damping effects are provided through the fixed damping shell and the damping elements in the fixed damping shell, the overall stability of a bridge structure is jointly maintained, and the service life of the bridge structure is prolonged by reducing the impact and fatigue effect of vibration on the bridge structure. The transverse damping mechanism is beneficial to prolonging the service life of the bridge; long-term stable vibration control can reduce abrasion and aging of structural materials, the maintenance cost and frequency are reduced, and the economical efficiency and sustainability of the bridge are improved.

Description

Technical Field

[0001] This utility model relates to the field of anti-resonance technology for building bridges, and in particular to a bridge anti-resonance system. Background Technology

[0002] Currently, with the rapid development of modern transportation, bridge structures, as a key component of urban infrastructure, are subjected to increasingly complex external environmental influences, including wind loads, earthquakes, and dynamic loads caused by vehicles. Especially during long-term use, lateral vibration poses a serious threat to the structural stability of bridges. Lateral vibration easily leads to resonance in bridges, causing structural fatigue, material wear, and even localized structural damage. This not only shortens the service life of bridges but also significantly increases maintenance and repair costs. Therefore, how to effectively control and reduce the energy of lateral vibration in bridges has become a crucial technical problem that urgently needs to be solved in current bridge engineering.

[0003] Traditional bridge anti-resonance design typically relies on a single damping mechanism, such as mechanical damping or the inherent damping properties of the material, to absorb vibration energy. However, this design has significant limitations when dealing with complex vibration environments, especially when bridges are frequently subjected to vibrations of varying frequencies and amplitudes from wind, earthquakes, and traffic loads during long-term operation. A single damping mechanism often fails to provide a sustained and effective vibration reduction effect. Resonance not only amplifies vibration amplitude but also exacerbates fatigue damage and material wear in critical components, increasing the potential failure risk of the bridge structure. Therefore, existing single-damping designs are insufficient to meet the long-term stability requirements of modern bridges in complex environments.

[0004] In modern bridge seismic construction, seismic bearings are widely used. They absorb and dissipate lateral vibration energy through elastic materials such as high-damping rubber, providing excellent vibration reduction. However, the damping effect of seismic bearings still has some limitations when dealing with vibrations of large amplitude and rapid frequency changes. Especially under the condition of strong aftershocks after an earthquake, the damping performance of seismic bearings is easily affected by fatigue and wear, and the damping efficiency may gradually decrease.

[0005] To solve the above problems, it is necessary to provide an anti-resonance system that meets the requirements. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a bridge anti-resonance system, including a chassis and a longitudinal column vertically mounted thereon; the longitudinal column is provided with a longitudinal electromagnetic damping mechanism, the chassis is provided with a transverse damping mechanism, the longitudinal column is mounted on the transverse damping mechanism, and a plurality of cover plates are provided on the chassis surrounding the longitudinal column, with the plurality of cover plates arranged sequentially end to end around the longitudinal column.

[0007] Furthermore, the longitudinal damping structure includes an electromagnetic ring and an inner magnetic ball. The inner magnetic ball is embedded in the electromagnetic ring. The electromagnetic ring has demagnetizing connecting posts at both ends, and the longitudinal damping structure is connected to the interior of the longitudinal posts through the demagnetizing connecting posts.

[0008] Furthermore, the electromagnetic ring is composed of multiple electromagnetic rings that are distributed in an overlapping manner.

[0009] Furthermore, the longitudinal damping structure is also provided with an outer ring fixing frame, which surrounds the outer wall of the longitudinal column and is connected to the electromagnetic ring through the demagnetizing connecting column.

[0010] Furthermore, the longitudinal column is also provided with an observation window, and the longitudinal electromagnetic damping mechanism is provided between the observation window and the inner wall of the longitudinal column.

[0011] Furthermore, the chassis has a stabilizing groove around its edge, and a plurality of bolt holes are arranged in sequence around the stabilizing groove. The cover plate is provided with corresponding fixing bolts, which can be used to mount the cover plate around the chassis.

[0012] Furthermore, a stabilizing block is provided at the bottom periphery of the cover plate away from the longitudinal column, and the fixing bolt is provided through the top periphery of the cover plate away from the longitudinal column. A stacking block is provided on the adjacent side of the cover plate away from the stabilizing block, and a stacking groove is provided on the other adjacent side of the cover plate away from the stabilizing block. The stacking groove and the stacking block have the same shape, and when adjacent cover plates are arranged and connected to each other, the stacking groove and the stacking block fit together. The cover plate is engaged with the stabilizing ring groove by the stabilizing block, and the fixing bolt is screwed into the bolt hole, thereby ensuring the stability of the cover plate when it is connected to the chassis.

[0013] Furthermore, the lateral damping mechanism includes a circular mounting plate and a plurality of damping rods arranged around it. A clearance sliding groove is provided on the chassis corresponding to the lateral damping mechanism. The lateral damping mechanism is disposed in the clearance sliding groove. The mounting plate is located at the center of the clearance sliding groove. The plurality of damping rods abut against the groove wall of the clearance sliding groove. The longitudinal column is vertically disposed at the center of the mounting plate.

[0014] Furthermore, the bottom of the mounting plate has a plurality of evenly distributed mounting openings, and each of the mounting openings is provided with a sliding ball, so that the mounting plate can slide smoothly in the clearance sliding groove in the chassis.

[0015] Furthermore, the damping rod includes a T-shaped rod, a fixed damping housing, a first damping spring, and a second damping spring; the T-shaped rods are evenly distributed and connected to the outer wall of the mounting plate; the T-shaped rods are connected through the fixed damping housing at one end near the mounting plate; the first damping spring is located at the end of the fixed damping housing away from the T-shaped rod; an abutment plate is located at one end of the T-shaped rod inside the fixed damping housing; an inner groove is provided around the periphery of the fixed damping housing at one end near the T-shaped rod; the second damping spring is located between the T-shaped rod and the inner groove; the abutment plate and the first damping spring abut against each other; the abutment plate slides on the inner wall of the fixed damping housing; and the second damping spring surrounds the outer wall between the T-shaped rod and the inner groove, further increasing the damping effect.

[0016] This invention provides a bridge anti-resonance system with the following advantages: This invention effectively absorbs and dissipates the energy generated by the bridge during lateral vibration through multiple damping mechanisms; this combined effect significantly enhances the bridge's anti-resonance capability, reduces structural damage and fatigue failure caused by resonance, and the stable installation and precise fit of the lateral damping mechanism enable the bridge to maintain good stability when subjected to external lateral forces; the combination of the mounting plate and sliding balls allows the mechanism to respond flexibly to vibration, while the fixed damping shell and internal damping elements provide necessary support and damping effects, jointly maintaining the overall stability of the bridge structure. By reducing the impact and fatigue effects of vibration on the bridge structure, the lateral damping mechanism helps extend the bridge's service life; long-term stable vibration control can reduce the wear and aging of structural materials, lower maintenance costs and frequency, and improve the bridge's economy and sustainability. Attached Figure Description

[0017] The above and other objects, features, and advantages of this utility model will become clearer from the following description of embodiments with reference to the accompanying drawings. The drawings are for illustrative purposes only and are not intended to limit the scope of this utility model. Furthermore, the same reference numerals denote the same parts throughout the drawings.

[0018] Figure 1 Schematic diagram of the overall structure of the anti-resonance system provided in the embodiments of this utility model Figure 1 ;

[0019] Figure 2 Schematic diagram of the overall structure of the anti-resonance system provided in the embodiments of this utility model Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the longitudinal electromagnetic damping mechanism of this utility model.

[0021] Figure 4This is a schematic diagram of the structure of the cover plate of this utility model;

[0022] Figure 5 This is a schematic diagram of the transverse damping mechanism of this utility model;

[0023] Figure 6 This is a schematic diagram of the fixed damping shell structure of this utility model;

[0024] In the diagram, 1. Longitudinal column, 2. Chassis, 3. Longitudinal electromagnetic damping mechanism, 4. Lateral damping mechanism, 5. Cover plate, 6. Outer ring fixing frame.

[0025] 11. Observation window; 21. Stabilizing ring groove; 22. Bolt hole; 23. Leaving sliding circular groove; 31. Inner magnetic ball; 32. Electromagnetic winding ring; 33. Demagnetizing connecting column; 41. Mounting plate; 42. Mounting port; 43. Damping rod; 44. T-shaped rod; 45. Fixed damping shell; 46. First damping spring; 47. Second damping spring; 48. Abutment plate; 49. Embedded groove; 51. Fixing bolt; 52. Stabilizing block; 53. Stacking block; 54. Stacking groove. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0027] Reference Figure 1-6 As shown, a bridge anti-resonance system disclosed in this utility model embodiment includes a chassis 2 and a longitudinal column 1 vertically disposed thereon; a longitudinal electromagnetic damping mechanism 3 is provided in the longitudinal column 1, a transverse damping mechanism 4 is provided in the chassis 2, the longitudinal column 1 is disposed on the transverse damping mechanism 4, and a plurality of cover plates 5 are provided on the chassis 2 surrounding the longitudinal column 1, the plurality of cover plates 5 being arranged sequentially end to end around the longitudinal column 1.

[0028] Reference Figure 1-3 As shown, the longitudinal damping structure 3 includes an electromagnetic ring 32 and an inner magnetic ball 31. The inner magnetic ball 31 is embedded in the electromagnetic ring 32. The electromagnetic ring 32 has demagnetizing connecting posts 33 at both ends, and the longitudinal damping structure 3 is connected to the interior of the longitudinal column 1 through the demagnetizing connecting posts 33.

[0029] Reference Figure 3As shown, the electromagnetic ring 32 is composed of multiple electromagnetic rings that are distributed in an overlapping manner.

[0030] Reference Figure 1-2 As shown, the longitudinal damping structure 3 is also provided with an outer ring fixing frame 6, which surrounds the outer wall of the longitudinal column 1. The outer ring fixing frame 6 is connected to the electromagnetic surrounding ring 32 through the demagnetizing connecting column 33.

[0031] Continue to refer to Figure 1-2 As shown, the longitudinal column 1 is also provided with an observation window 11, and the longitudinal electromagnetic damping mechanism 3 is provided between the observation window 11 and the inner wall of the longitudinal column 1.

[0032] Reference Figure 2 As shown, the chassis 2 is surrounded by a stabilizing groove 21, and a plurality of bolt holes 22 are arranged in sequence in the stabilizing groove 21. The cover plate 5 is provided with corresponding fixing bolts 51, which can be used to install the cover plate 5 around the chassis 2.

[0033] Reference Figure 1 , 4 As shown, a stabilizing block 52 is provided at the bottom periphery of the cover plate 5 away from the longitudinal column 1, and the fixing bolt 51 is provided through the top periphery of the cover plate 5 away from the longitudinal column 1. A stacking block 53 is provided on the adjacent side of the cover plate 5 away from the stabilizing block 52, and a stacking groove 54 is provided on the other adjacent side of the cover plate 5 away from the stabilizing block 52. The stacking groove 54 and the stacking block 53 have the same shape, and when adjacent cover plates 5 are arranged and connected to each other, the stacking groove 54 and the stacking block 53 fit together. The cover plate 5 is engaged with the stabilizing ring groove 21 by the stabilizing block 52, and the fixing bolt 51 is screwed into the bolt hole 22, thereby ensuring the stability of the cover plate 5 when connected to the chassis 2.

[0034] Reference Figure 2 , 5 As shown in Figure 6, the lateral damping mechanism 4 includes a circular mounting plate 41 and a plurality of damping rods 42 surrounding the mounting plate 41. Corresponding to the lateral damping mechanism 4, the chassis 2 is provided with a clearance sliding groove 23. The lateral damping mechanism 4 is disposed in the clearance sliding groove 23. The mounting plate 41 is disposed at the center of the clearance sliding groove 23. The plurality of damping rods 42 abut against the groove wall of the clearance sliding groove 23. The longitudinal column 1 is vertically disposed at the center of the mounting plate 41.

[0035] Reference Figure 5 As shown, the mounting plate 41 has a plurality of evenly distributed mounting openings 42 at its bottom, and each of the mounting openings 42 is provided with a sliding ball, so that the mounting plate 41 can slide smoothly in the clearance sliding groove 23 in the chassis 2.

[0036] Reference Figure 6 As shown, the damping rod 43 includes a T-shaped rod 44, a fixed damping housing 45, a first damping spring 46, and a second damping spring 47. The mounting plate 41 has T-shaped rods 44 evenly distributed and connected on its outer wall. The fixed damping housing 45 has T-shaped rods 44 penetrating through it at one end near the mounting plate 41. The fixed damping housing 45 has the first damping spring 46 at one end away from the T-shaped rod 44. The T-shaped rod 44 has an abutment plate 48 at one end inside the fixed damping housing 45. The fixed damping housing 45 has an encircling inner groove 49 at one end near the T-shaped rod 44. The second damping spring 47 is positioned between the T-shaped rod 44 and the inner groove 49. The abutment plate 48 and the first damping spring 46 abut against each other. The abutment plate 48 slides on the inner wall of the fixed damping housing 45. The second damping spring 47 surrounds the outer wall between the T-shaped rod 44 and the inner groove 49, further increasing the damping effect.

[0037] This utility model discloses a bridge anti-resonance system. Please refer to [link to relevant documentation]. Figure 1-6 As shown, the structure includes a longitudinal column 1 with an observation window 11 running through it. A longitudinal electromagnetic damping mechanism 3 is positioned between opposing sides of the inner wall of the observation window 11. A base plate 2 is located at the bottom of the longitudinal column 1, and multiple cover plates 5 are evenly distributed around the longitudinal column 1 at the top of the base plate 2. A stabilizing annular groove 21 is formed around the outer periphery of the base plate 2, and evenly distributed bolt holes 22 are formed within the stabilizing annular groove 21. A clearance sliding groove 23 is formed at the bottom of the inner side of the base plate 2. A transverse damping mechanism 4 is located at the bottom of the longitudinal column 1. The longitudinal electromagnetic damping mechanism 3 extends out of the observation window 11 and surrounds the outer wall of the longitudinal column 1. The transverse damping mechanism 4 slides within the clearance sliding groove 23. The cover plates 5 and the stabilizing annular groove 21 are interlocked. Through a multi-dimensional damping mechanism and structural optimization, the stability and safety of the bridge are improved. The design revolves around the longitudinal column 1, cleverly incorporating an observation window 11 for easy daily inspection and maintenance. It also houses a built-in longitudinal electromagnetic damping mechanism 3, which effectively absorbs and dissipates energy generated during longitudinal vibrations through electromagnetic force, thus reducing resonance. The bottom of the longitudinal column 1 is encased in a meticulously designed chassis 2, enhancing the overall structural stability. Cover plates 5, evenly distributed around the longitudinal column 1, not only improve sealing but also enhance the structure's impact resistance. Simultaneously, the stabilizing ring groove 21 and its internal bolt holes 22 provide additional fixing points for the entire structure, ensuring tight connections between all components to collectively resist external vibrations. A specially designed sliding groove 23 inside the chassis 2 provides free sliding space for the lateral damping mechanism 4.

[0038] Compared with conventional seismic bearings, the electromagnetic damping device of this invention has the following advantages:

[0039] Traditional seismic bearings rely primarily on the elastic deformation of materials for damping capacity, which cannot be adjusted in real time according to changes in the external environment. In contrast, electromagnetic damping devices can dynamically control the damping force by adjusting the current, responding instantly to the vibration amplitude and frequency of the bridge, enabling the damping system to provide the best damping effect under different vibration conditions. This real-time adjustable characteristic is particularly crucial when dealing with vibrations of different intensities, as it can avoid resonance amplification caused by frequency mismatch.

[0040] The damping effect of traditional seismic bearings is mainly concentrated within a specific vibration frequency range. High-frequency or low-frequency vibrations outside this range can easily weaken their damping performance. However, electromagnetic damping systems can absorb vibrations across multiple frequency bands by controlling changes in the electromagnetic force field. Especially when facing multi-dimensional vibrations, they can more effectively reduce the impact of various vibrations on bridge structures, thereby avoiding the reduction in damping effect caused by frequency drift.

[0041] Continue to refer to the appendix Figure 1-6As shown, the longitudinal electromagnetic damping mechanism 3 is equipped with an outer ring fixing frame 6. Each side of the outer ring fixing frame 6 near the center of the observation window 11 is equipped with a demagnetizing connecting column 33. Each demagnetizing connecting column 33 contains an overlapping electromagnetic ring 32, with an inner magnetic ball 31 inside each ring. The outer ring fixing frame 6 surrounds the outer wall of the longitudinal column 1 and is connected to the electromagnetic ring 32 via the demagnetizing connecting columns 33. The outer ring fixing frame 6 serves as the supporting frame for the entire longitudinal electromagnetic damping mechanism 3. Its tight enclosure around the outer wall of the longitudinal column 1 ensures a stable connection between the damping mechanism and the main bridge structure. Its design considers not only load-bearing capacity but also electromagnetic shielding to reduce the impact of external electromagnetic interference on the damping effect. The demagnetizing connecting columns 33 are located on the side of the outer ring fixing frame 6 near the center of the observation window 11. They are not only the fixing points for the electromagnetic ring 32 but also play a crucial role in converting electromagnetic energy into mechanical damping force. Through a specific demagnetization design, the demagnetizing connecting column 33 can respond rapidly to changes in the electromagnetic field, adjusting the magnetic field distribution within the electromagnetic ring 32 to effectively absorb vibration energy. The electromagnetic ring 32 consists of multiple overlapping electromagnetic rings. These rings generate a strong magnetic field when energized. When the bridge vibrates, the magnetic field lines change accordingly, inducing a current within the electromagnetic ring 32. These induced currents interact with the original magnetic field, generating a damping force that resists vibration. The inner magnetic ball 31, embedded within the electromagnetic ring 32, further enhances the electromagnetic damping effect. The inner magnetic ball 31 moves under the influence of force in the magnetic field, its trajectory opposite to the vibration direction, thus further dissipating vibration energy. Meanwhile, the presence of the inner magnetic sphere 31 makes the magnetic field distribution within the electromagnetic ring 32 more complex and variable, which is beneficial to improving the response speed and stability of the damping mechanism. The longitudinal electromagnetic damping mechanism 3, through the stable support of the outer ring fixing frame 6, the flexible adjustment of the demagnetizing connecting column 33, the strong damping of the electromagnetic ring 32, and the auxiliary reinforcement of the inner magnetic sphere 31, together constitutes a highly efficient and stable vibration suppression system. This system can respond quickly and effectively absorb vibration energy when the bridge is subjected to longitudinal vibration, thereby protecting the integrity and safety of the bridge structure.

[0042] Reference Figure 1-6As shown, a stabilizing block 52 is provided at the bottom periphery of the cover plate 5 away from the longitudinal column 1, and a fixing bolt 51 is provided through the top periphery of the cover plate 5 away from the longitudinal column 1. A stacking block 53 is provided on the adjacent side of the cover plate 5 away from the stabilizing block 52, and a stacking groove 54 is provided on the other adjacent side of the cover plate 5 away from the stabilizing block 52. The stacking groove 54 and the stacking block 53 have the same shape, and when different cover plates 5 are arranged, the stacking groove 54 and the stacking block 53 fit together. The cover plate 5 is engaged with the stabilizing ring groove 21 by the stabilizing block 53, and the fixing bolt 51 is engaged with the stabilizing ring groove 21. The bolt holes 22 are screwed together. The cover plate 5 serves as the basic unit that surrounds the longitudinal column 1 and covers the chassis 2. The design of the cover plate 5 balances strength and sealing. Its surface is flat, which facilitates a tight fit with other components and prevents external moisture, dust, and other impurities from entering the bridge interior. At the same time, the cover plate 5 also has sufficient rigidity to withstand a certain amount of external impact, protecting the safety of the bridge's internal structure. The stabilizing blocks 52, located at the bottom periphery of the cover plate 5, are key components for achieving the interlocking of the cover plate 5 and the stabilizing ring groove 21. These stabilizing blocks 52 have a shape and size that match the stabilizing ring groove 21, ensuring that the cover plate 5 is accurately inserted into the groove during installation, thereby achieving a stable fixing effect. To further enhance the stability of the cover plate 5, a fixing bolt 51 is also provided through the top periphery of the cover plate 5. It is screwed together with the bolt holes 22 opened on the edge of the stabilizing ring groove 21. Tightening the bolts forms a tighter connection between the cover plate and the stabilizing ring groove. This dual-fixing method not only improves the wind pressure and vibration resistance of the cover plate, but also extends its service life. This design not only simplifies the installation process, but also improves the overall stability and sealing of the overlapping cover plate mechanism, realizing the stable sealing and flexible expansion of the bridge top structure. This structure not only improves the bridge's wind pressure and vibration resistance, but also provides convenient conditions for subsequent maintenance and repair work.

[0043] Reference Figure 5-6As shown, the lateral damping mechanism 4 includes a mounting plate 41. The bottom of the mounting plate 41 has evenly distributed mounting openings 42, each containing a sliding ball. The outer wall of the mounting plate 41 has evenly distributed damping rods 43. The T-shaped rods 44 are arranged through the fixed damping housing 45 near the mounting plate 41. The end of the fixed damping housing 45 away from the T-shaped rods 44 is provided with a first damping spring 46. The end of the T-shaped rods 44 located inside the fixed damping housing 45 is provided with an abutment plate 48. The outer periphery of the fixed damping housing 45 near the T-shaped rods 44 is provided with a surrounding inner groove 49. A second damping spring 47 is provided between the T-shaped rods 44 and the inner groove 49. The abutment plate 48 and the first damping spring 46 abut against each other. The abutment plate 48 slides on the inner wall of the fixed damping housing 45. The second damping spring 47 surrounds the outer wall between the T-shaped rods 44 and the inner groove 49. The mounting plate 41 serves as the mounting base for the lateral damping mechanism 4. In this embodiment, the mounting plate 41 has evenly distributed mounting openings 42 at its bottom for mounting sliding balls. These mounting openings not only ensure the stable installation of the sliding balls but also allow the mounting plate to slide smoothly in the clearance sliding groove 23 within the chassis 2, thereby adapting to the lateral vibration of the bridge. The sliding balls, installed in the mounting openings 42, reduce the frictional resistance between the mounting plate 41 and the clearance sliding groove 23 through their rolling action, allowing the mounting plate to slide more smoothly. Simultaneously, the sliding balls also have a certain buffering effect, absorbing some vibration energy. The fixed damping housing 45 is mounted on the outer ring wall of the mounting plate 41, providing protection for the internal damping mechanism. The fixed damping housing 45 has a sliding channel for the T-shaped rod 44 and space for mounting the first damping spring 46 and the second damping spring 47. The T-shaped rod 44 and the abutment plate 48 pass through one end of the fixed damping housing 45. When the bridge experiences lateral vibration... During lateral vibration, the mounting plate 41 drives the T-shaped rod 44 and the abutment plate 48 to move together. The abutment plate 48 abuts against the first damping spring 46, and the vibration energy is consumed through the compression and release of the spring. The second damping spring 47 is located at the end of the fixed damping housing 805 away from the T-shaped rod 804, and interacts with the abutment plate 48 to further enhance the damping effect. The two springs work together to enable the lateral electromagnetic damping mechanism 4 to absorb and dissipate vibration energy in multiple directions, ensuring the stability of the damping mechanism during vibration. The lateral damping mechanism 4 achieves effective absorption and dissipation of the bridge's lateral vibration energy through the coordinated action of components such as the mounting plate 41, sliding ball bearings, fixed damping housing 45, T-shaped rod 44, first damping spring 46, second damping spring 47, and abutment plate 48. This design not only improves the bridge's anti-resonance performance but also enhances the stability and safety of its overall structure.

[0044] In this embodiment, when the bridge experiences longitudinal vibration, the magnetic field in the electromagnetic ring changes with the vibration, generating an induced current. This induced current interacts with the original magnetic field to produce an effective damping force to dissipate the vibration energy.

[0045] The electromagnetic damping force of the longitudinal electromagnetic damping mechanism is calculated based on Faraday's law of electromagnetic induction and the Lorentz force formula. The electromagnetic damping force F... d The expression is: F d =∫ V (J×B)dV, where J is the induced current density (A / m³). 2 B is the magnetic field strength (T), and V is the volume inside the electromagnetic ring.

[0046] The induced current density J can be expressed by Ohm's law and the relationship between the electric field strength E, with the expression J = σE, where σ is the conductivity. According to Faraday's law of induction, the electric field strength E is generated by a time-varying magnetic field, and its expression is... Combining the above formulas, the electromagnetic damping force F d It can be further written as This formula describes the relationship between the rate of change of the electromagnetic field and the damping force. The faster the magnetic field changes, the greater the induced current generated, and thus the greater the damping force F. d The stronger.

[0047] The magnetic field strength B generated by the longitudinal electromagnetic damping mechanism can be calculated using Ampere's circuital law, and its expression is: Where μ0 is the free permeability, approximately 4π × 10⁻⁶. -7 T·m / A.

[0048] For multiple coils with n turns, the expression for the magnetic field strength B is B = μ0·n·I, where I is the current intensity passing through the electromagnetic coil, and the expression for I is... Where R is the resistance of the coil and P is the power.

[0049] The longitudinal electromagnetic damping mechanism requires electric drive, and its power requirement P is calculated as follows: P = I 2 R, where I is the current in the coil, R is the resistance of the electromagnetic coil, and the current I is related to the damping force F. d The power P depends on the damping force required by the system. The current intensity I is adjusted according to the actual situation to achieve the optimal damping effect. For vibrations of different intensities, the magnitude of the current and the magnetic field strength can be dynamically adjusted through a feedback control system.

[0050] Electromagnetic damping systems reduce the vibration amplitude of bridges by consuming vibration energy. The expression for its energy dissipation E is E=∫0 T P(t)dt=∫0 T I2 (t)R dt, where T is the vibration period and P(t) is the instantaneous power. The electromagnetic damping mechanism generates heat in the resistor through current, which dissipates the mechanical energy of the vibration, thereby reducing the vibration energy.

[0051] In summary, the bridge anti-resonance system provided by this utility model has the following beneficial technical effects: This utility model effectively absorbs and dissipates the energy generated by the bridge during lateral vibration through multiple damping mechanisms; this comprehensive effect significantly enhances the bridge's anti-resonance capability, reduces structural damage and fatigue failure caused by resonance, and the stable installation and precise coordination of the lateral damping mechanism enable the bridge to maintain good stability when subjected to external lateral forces; the combination of the mounting plate and sliding ball allows the mechanism to respond flexibly to vibration, while the fixed damping shell and various internal damping elements provide the necessary support and damping effect, jointly maintaining the overall stability of the bridge structure. By reducing the impact and fatigue effect of vibration on the bridge structure, the lateral damping mechanism helps to extend the service life of the bridge; long-term stable vibration control can reduce the wear and aging of structural materials, reduce maintenance costs and frequency, and improve the economy and sustainability of the bridge.

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. Finally, it should be noted that the above embodiments are clearly examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all embodiments here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A bridge anti-resonance system, characterized in that, It includes a chassis and a longitudinal column vertically mounted thereon; the longitudinal column is provided with a longitudinal electromagnetic damping mechanism, the chassis is provided with a transverse damping mechanism, the longitudinal column is mounted on the transverse damping mechanism, and a plurality of cover plates are provided on the chassis surrounding the longitudinal column, with the plurality of cover plates arranged sequentially end to end around the longitudinal column.

2. The bridge anti-resonance system according to claim 1, characterized in that: The longitudinal electromagnetic damping mechanism includes an electromagnetic ring and an inner magnetic ball. The inner magnetic ball is embedded in the electromagnetic ring. The electromagnetic ring has demagnetizing connecting posts at both ends, and the longitudinal electromagnetic damping mechanism is connected to the interior of the longitudinal posts through the demagnetizing connecting posts.

3. The bridge anti-resonance system according to claim 2, characterized in that: The electromagnetic ring is composed of multiple electromagnetic rings that are distributed in an overlapping manner.

4. The bridge anti-resonance system according to claim 2, characterized in that: The longitudinal electromagnetic damping mechanism is also provided with an outer ring fixing frame, which surrounds the outer wall of the longitudinal column and is connected to the electromagnetic ring through the demagnetizing connecting column.

5. The bridge anti-resonance system according to claim 1, characterized in that: The longitudinal column is also provided with an observation window, and the longitudinal electromagnetic damping mechanism is provided between the observation window and the inner wall of the longitudinal column.

6. The bridge anti-resonance system according to claim 1, characterized in that: The chassis is surrounded by a stabilizing groove, and multiple bolt holes are arranged in sequence around the stabilizing groove. The cover plate is provided with corresponding fixing bolts, which can be used to install the cover plate around the chassis.

7. The bridge anti-resonance system according to claim 6, characterized in that: The cover plate has a stabilizing block at its bottom periphery away from the longitudinal column, and a fixing bolt is provided through the top periphery of the cover plate away from the longitudinal column. A stacking block is provided on the adjacent side of the cover plate away from the stabilizing block, and a stacking groove is provided on the other adjacent side of the cover plate away from the stabilizing block. The stacking groove and the stacking block have the same shape, and when adjacent cover plates are arranged and connected to each other, the stacking groove and the stacking block fit together. The cover plate is engaged with the stabilizing ring groove by the stabilizing block, and the fixing bolt is screwed into the bolt hole, thereby ensuring the stability of the cover plate when it is connected to the chassis.

8. The bridge anti-resonance system according to claim 1, characterized in that: The lateral damping mechanism includes a circular mounting plate and a plurality of damping rods arranged around it. A clearance sliding groove is provided on the chassis corresponding to the lateral damping mechanism. The lateral damping mechanism is located in the clearance sliding groove. The mounting plate is located at the center of the clearance sliding groove. The plurality of damping rods abut against the groove wall of the clearance sliding groove. The longitudinal column is vertically arranged at the center of the mounting plate.

9. The bridge anti-resonance system according to claim 8, characterized in that: The mounting plate has multiple evenly distributed mounting openings at its bottom, and each mounting opening is equipped with a sliding ball, allowing the mounting plate to slide smoothly in the clearance sliding groove within the chassis.

10. The bridge anti-resonance system according to claim 8, characterized in that: The damping rod includes a T-shaped rod, a fixed damping shell, a first damping spring, and a second damping spring. The outer wall of the mounting plate is provided with evenly distributed connections to the T-shaped rods. The T-shaped rods are all connected through the fixed damping shell at one end near the mounting plate. The first damping spring is located at the end of the fixed damping shell away from the T-shaped rod. An abutment plate is located at one end of the T-shaped rod within the fixed damping shell. An encircling groove is located around the periphery of the fixed damping shell at the end near the T-shaped rod. The second damping spring is located between the T-shaped rod and the encircling groove. The abutment plate and the first damping spring abut against each other. The abutment plate slides on the inner wall of the fixed damping shell. The second damping spring surrounds the outer wall between the T-shaped rod and the encircling groove, further increasing the damping effect.

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