Bridge anti-resonance system

Abstract

The invention 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] The invention relates to the technical field of anti-resonance of building bridges, and in particular to an anti-resonance system for bridges. Background Art

[0002] At present, with the rapid development of modern transportation, bridge structures, as key components of urban infrastructure, are subject to increasingly complex external environmental influences, including wind loads, earthquakes, and dynamic loads caused by vehicles. In particular, lateral vibration poses a serious threat to the structural stability of bridges during long-term use. Lateral vibration can easily cause resonance in bridges, thereby causing structural fatigue, material wear, and even local structural damage. This not only shortens the service life of bridges, but also significantly increases the cost of maintenance and repair. Therefore, how to effectively control and reduce the energy of bridges in lateral vibration has become an important technical issue that needs to be solved in current bridge engineering.

[0003] Traditional anti-resonance design of bridges usually relies on a single damping mechanism, such as mechanical damping or the damping properties of the material itself to absorb vibration energy. However, this design has obvious limitations when dealing with complex vibration environments, especially when bridges are frequently affected by vibrations of different frequencies and amplitudes such as wind, earthquakes and traffic loads during long-term operation. A single damping mechanism often cannot provide a continuous and effective shock absorption effect. The occurrence of resonance not only amplifies the vibration amplitude, but also aggravates fatigue damage and material wear in key parts, increasing the potential failure risk of the bridge structure. Therefore, the existing single damping design is difficult to meet the long-term stability requirements of modern bridges in complex environments.

[0004] In modern bridge seismic construction, seismic bearings are widely used, which absorb and dissipate lateral vibration energy through elastic materials such as high-damping rubber, providing good shock absorption effect. However, the damping effect of seismic bearings still has some limitations when dealing with large-amplitude, fast-frequency vibrations. Especially in the face 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] In order to solve the above problems, it is necessary to provide an anti-resonance system that meets the requirements. Summary of the invention

[0006] In view of the shortcomings of the prior art, the present invention provides a bridge anti-resonance system, including a chassis and a longitudinal column vertically arranged thereon; a longitudinal electromagnetic damping mechanism is provided in the longitudinal column, a transverse damping mechanism is provided in the chassis, the longitudinal column is arranged on the transverse damping mechanism, a plurality of cover plates are provided on the chassis surrounding the longitudinal column, and the plurality of cover plates are arranged in sequence end to end around the longitudinal column.

[0007] Furthermore, the longitudinal damping structure includes an electromagnetic surrounding ring and an inner magnetic ball, the inner magnetic ball is embedded in the electromagnetic surrounding ring, demagnetizing connecting columns are provided at both ends of the electromagnetic surrounding ring, and the longitudinal damping structure is connected to the inside of the longitudinal column through the demagnetizing connecting columns.

[0008] Furthermore, the electromagnetic surrounding ring is composed of a plurality of electromagnetic rings that are distributed in an intersecting and overlapping manner.

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

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

[0011] Furthermore, a stabilizing ring groove is provided around the edge of the chassis, a plurality of bolt holes are sequentially provided around the stabilizing ring groove, and fixing bolts are correspondingly provided on the cover plate, so that the cover plate can be installed around the chassis.

[0012] Furthermore, a stabilizing block is provided at the outer bottom of the cover plate away from the longitudinal column, the fixing bolt is penetrated at the outer top 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 clamped to each other with the stabilizing ring groove through the stabilizing block, and the fixing bolt and the bolt hole are screwed to each other, thereby ensuring the stability of the cover plate when connected to the chassis.

[0013] Furthermore, the lateral damping mechanism includes a circular mounting plate and a plurality of damping rods arranged around it, the chassis corresponding to the lateral damping mechanism is provided with a give-way sliding circular groove, the lateral damping mechanism is arranged in the give-way sliding circular groove, the mounting plate is arranged at the center position of the give-way sliding circular groove, the plurality of damping rods abut against the groove wall of the give-way sliding circular groove, and the longitudinal column is vertically arranged at the center position of the mounting plate.

[0014] Furthermore, a plurality of evenly distributed mounting openings are provided at the bottom of the mounting plate, and sliding balls are provided in each of the plurality of mounting openings, so that the mounting plate can slide smoothly in the yielding sliding circular groove in the chassis.

[0015] Furthermore, 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 T-shaped rods connected thereto, one end of the fixed damping shell close to the mounting plate is penetrated by the T-shaped rod, the first damping spring is provided in the fixed damping shell at one end away from the T-shaped rod, an abutment plate is provided at one end of the T-shaped rod located in the fixed damping shell, an outer periphery of the end of the fixed damping shell close to the T-shaped rod is provided with a surrounding embedded groove, the second damping spring is provided between the T-shaped rod and the embedded 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, and the second damping spring surrounds the outer wall between the T-shaped rod and the embedded groove to further increase the damping effect.

[0016] A bridge anti-resonance system provided by the present invention has the following advantages: the present invention effectively absorbs and dissipates the energy generated by the bridge in lateral vibration through multiple damping mechanisms; this combined effect significantly enhances the anti-resonance ability of the bridge, reduces structural damage and fatigue damage caused by resonance, and the stable installation and precise matching 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 the sliding ball enables the mechanism to flexibly respond to vibrations, while the fixed damping shell and the various damping elements inside provide the necessary support and damping effects, jointly maintaining the overall stability of the bridge structure, and by reducing the impact and fatigue effects 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and other objects, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment mode and are not to be considered as limiting the present invention. In addition, the same reference symbols are used to represent the same components throughout the accompanying drawings.

[0018] Figure 1 The overall structure of the anti-resonance system provided by the embodiment of the present invention is shown in FIG. Figure 1 ;

[0019] Figure 2 The overall structure of the anti-resonance system provided by the embodiment of the present invention is shown in FIG. Figure 2 ;

[0020] Figure 3 It is a schematic diagram of the structure of the longitudinal electromagnetic damping mechanism of the present invention;

[0021] Figure 4 It is a structural schematic diagram of the cover plate of the present invention;

[0022] Figure 5 It is a schematic diagram of the structure of the lateral damping mechanism of the present invention;

[0023] Figure 6 It is a schematic diagram of the fixed damping housing structure of the present invention;

[0024] In the figure, 1, longitudinal column, 2, chassis, 3, longitudinal electromagnetic damping mechanism, 4, transverse damping mechanism, 5, cover plate, 6, outer ring fixing frame,

[0025] 11. Observation window, 21. Stabilizing ring groove, 22. Bolt hole, 23. Make way sliding circular groove, 31. Inner magnetic ball, 32. Electromagnetic surrounding ring, 33. Demagnetizing connecting column, 41. Mounting plate, 42. Mounting port, 43. Damping rod, 44. T-shaped rod, 45. Fixed damping housing, 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 DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0027] Reference Figure 1-6 As shown, an anti-resonance system for a bridge disclosed in an embodiment of the present invention comprises a chassis 2 and a longitudinal column 1 vertically arranged thereon; a longitudinal electromagnetic damping mechanism 3 is arranged in the longitudinal column 1, a transverse damping mechanism 4 is arranged in the chassis 2, the longitudinal column 1 is arranged on the transverse damping mechanism 4, a plurality of cover plates 5 are arranged on the chassis 2 around the longitudinal column 1, and the plurality of cover plates 5 are arranged around the longitudinal column 1 in sequence, connected end to end.

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

[0029] Reference Figure 3 As shown, the electromagnetic surrounding ring 32 is composed of a plurality of electromagnetic rings that are cross-overlapped and distributed.

[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 , and 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 further 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, a stabilizing annular groove 21 is provided around the edge of the chassis 2 , and a plurality of bolt holes 22 are sequentially provided around the stabilizing annular groove 21 . The cover plate 5 is correspondingly provided with fixing bolts 51 , so that the cover plate 5 can be installed around the chassis 2 .

[0033] Reference Figure 1 , 4 As shown, a stabilizing block 52 is provided at the outer bottom of the cover plate 5 away from the longitudinal column 1, and the fixing bolt 51 is penetrated through the outer top 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 clamped with the stabilizing ring groove 21 through the stabilizing block 52, and the fixing bolt 51 is screwed with 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. The chassis 2 is provided with a yielding sliding circular groove 23 corresponding to the lateral damping mechanism 4. The lateral damping mechanism 4 is arranged in the yielding sliding circular groove 23. The mounting plate 41 is arranged at the center position of the yielding sliding circular groove 23. The plurality of damping rods 42 abut against the groove wall of the yielding sliding circular groove 23. The longitudinal column 1 is vertically arranged at the center position of the mounting plate 41.

[0035] Reference Figure 5 As shown, a plurality of evenly distributed mounting openings 42 are provided at the bottom of the mounting plate 41 , and sliding balls are provided in each of the plurality of mounting openings 42 , so that the mounting plate 41 can slide smoothly in the yielding sliding circular groove 23 in the chassis 2 .

[0036] Reference Figure 6As shown, the damping rod 43 includes a T-shaped rod 44, a fixed damping shell 45, a first damping spring 46 and a second damping spring 47; the outer wall of the mounting plate 41 is provided with the T-shaped rods 44 connected in an evenly distributed manner, the end of the fixed damping shell 45 close to the mounting plate 41 is penetrated and connected with the T-shaped rods 44, the first damping spring 46 is provided at the end of the fixed damping shell 45 away from the T-shaped rod 44, the T-shaped rod 44 is provided with an abutment plate 48 at one end located in the fixed damping shell 45, the fixed damping shell 45 is provided with a surrounding embedded groove 49 on the periphery of one end close to the T-shaped rod 44, the second damping spring 47 is provided between the T-shaped rod 44 and the embedded 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 shell 45, and the second damping spring 47 surrounds the outer wall between the T-shaped rod 44 and the embedded groove 49 to further increase the damping effect.

[0037] The embodiment of the present invention discloses a bridge anti-resonance system, please refer to Figure 1-6As shown, it includes a longitudinal column 1, an observation window 11 is penetrated through the longitudinal column 1, a longitudinal electromagnetic damping mechanism 3 is arranged between the inner walls of the observation window 11, a chassis 2 is arranged at the bottom of the longitudinal column 1, a plurality of cover plates 5 are evenly distributed with the longitudinal column 1 as the axis on the top of the chassis 2, a stabilizing annular groove 21 is opened on the periphery of the chassis 2, evenly distributed bolt holes 22 are opened in the stabilizing annular groove 21, a yielding sliding circular groove 23 is opened at the bottom of the chassis 2, a transverse damping mechanism 4 is arranged 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 in the yielding sliding circular groove 23, the cover plate 5 and the stabilizing annular groove 21 are mutually engaged, and the stability and safety of the bridge are improved through multi-dimensional damping mechanism and structural optimization. The design revolves around the longitudinal column 1, on which an observation window 11 is cleverly set, which is not only convenient for daily inspection and maintenance, but also has a built-in longitudinal electromagnetic damping mechanism 3. This mechanism effectively absorbs and dissipates the energy generated by the longitudinal vibration of the bridge through the action of electromagnetic force, thereby reducing the occurrence of resonance. The bottom of the longitudinal column 1 is wrapped by a carefully designed chassis 2, which enhances the stability of the overall structure. The cover plate 5 provided on the top of the chassis is evenly distributed with the longitudinal column 1 as the center, which not only enhances the sealing, but also improves the impact resistance of the structure through this design. At the same time, the design of the stabilizing ring groove 21 and the bolt hole 22 therein provides an additional fixing point for the entire structure, ensuring that all components are tightly connected to jointly resist external vibrations. The specially opened sliding circular groove 23 inside the chassis 2 provides a free sliding space for the lateral damping mechanism 4. This design enables the lateral damping mechanism 4 to flexibly respond and absorb vibration energy when the bridge is subjected to lateral vibration, further enhancing the all-round anti-resonance capability of the bridge. The anti-resonance structure of the bridge achieves multi-dimensional absorption and dissipation of the vibration energy of the bridge by combining innovative elements such as observation windows, longitudinal electromagnetic damping mechanisms, cover plate structures, stabilizing ring grooves and lateral damping mechanisms, thereby significantly improving the stability and safety of the bridge under complex environmental conditions.

[0038] Compared with conventional seismic bearings, the electromagnetic damping device of the present invention has the following advantages: the shock-absorbing capacity of conventional seismic bearings mainly depends on the elastic deformation of the material and cannot be adjusted in real time according to changes in the external environment; while the electromagnetic damping device can dynamically control the damping force by adjusting the current, and respond instantly according to the vibration amplitude and frequency of the bridge, so that the damping system can provide the best shock-absorbing effect under different vibration conditions; this real-time adjustable feature is particularly critical when dealing with vibrations of different intensities, and can avoid the resonance amplification phenomenon caused by frequency mismatch.

[0039] The shock-absorbing effect of traditional seismic bearings is mainly concentrated within a specific vibration frequency range. High-frequency or low-frequency vibrations beyond this range can easily weaken its shock-absorbing performance. The electromagnetic damping system can achieve multi-frequency vibration absorption by controlling the changes in the electromagnetic force field. Especially when facing multi-dimensional vibrations, it can more effectively reduce the impact of various vibrations on the bridge structure, thereby avoiding the reduction of shock-absorbing effect due to frequency drift.

[0040] Continue to refer to the attached Figure 1-6 As shown, the longitudinal electromagnetic damping mechanism 3 is provided with an outer ring fixing frame 6, and a demagnetizing connecting column 33 is provided on one side of the outer ring fixing frame 6 close to the center position of the observation window 11, and electromagnetic surrounding rings 32 which are cross-overlapped and distributed are arranged inside the demagnetizing connecting column 33, and an inner magnetic ball 31 is arranged inside the electromagnetic surrounding ring 32. The outer ring fixing frame 6 surrounds the outer wall of the longitudinal column 1, and the outer ring fixing frame 6 is connected to the electromagnetic surrounding ring 32 through the demagnetizing connecting column 33. The outer ring fixing frame 6 serves as the supporting frame of the entire longitudinal electromagnetic damping mechanism 3. The outer ring fixing frame 6 is tightly surrounded on the outer wall of the longitudinal column 1 to ensure the stable connection between the damping mechanism and the main structure of the bridge; its design not only considers the load-bearing capacity, but also takes into account the electromagnetic shielding effect to reduce the influence of external electromagnetic interference on the damping effect, and the demagnetizing connecting column 33 is arranged on one side of the outer ring fixing frame 6 close to the center position of the observation window 11. They are not only the fixing points of the electromagnetic surrounding ring 32, but also undertake the key task of converting electromagnetic energy into mechanical damping force. Through a specific demagnetization design, the demagnetization connecting column 33 can respond quickly when the electromagnetic field changes, adjust the magnetic field distribution within the electromagnetic surround ring 32, and thus achieve effective absorption of vibration energy. The electromagnetic surround ring 32 is composed of multiple electromagnetic rings that are cross-overlapped and distributed. These electromagnetic rings generate a strong magnetic field after being energized. When the bridge vibrates, the magnetic lines of force in the magnetic field will change accordingly, and then induced currents will be generated inside the electromagnetic surround ring 32. These induced currents interact with the original magnetic field to generate a damping force that hinders vibration. The inner magnetic ball 31 is embedded in the electromagnetic surround ring 32, further enhancing the electromagnetic damping effect. The inner magnetic ball 31 moves in the magnetic field under the action of force, and its movement trajectory is opposite to the vibration direction, thereby further consuming vibration energy. At the same time, the presence of the inner magnetic ball 31 also makes the magnetic field distribution in the electromagnetic surrounding ring 32 more complex and changeable, which is conducive to improving the response speed and stability of the damping mechanism. The longitudinal electromagnetic damping mechanism 3 constitutes an efficient and stable vibration suppression system through the stable support of the outer ring fixing frame 6, the flexible adjustment of the demagnetization connecting column 33, the strong damping of the electromagnetic surrounding ring 32 and the auxiliary enhancement of the inner magnetic ball 31. The 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.

[0041] Reference Figure 1-6As shown, a stabilizing block 52 is provided at the outer bottom of the cover plate 5 away from the longitudinal column 1, a fixing bolt 51 is penetrated through the outer top 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 the stacking groove 54 and the stacking block 53 fit together when different cover plates 5 are arranged with each other. The cover plate 5 is mutually clamped with the stabilizing ring groove 21 through the stabilizing block 53, and the fixing bolt 51 is connected with the The bolt holes 22 are screwed together. The cover plate 5 is a basic unit that surrounds the longitudinal column 1 and covers the chassis 2. The design of the cover plate 5 takes into account both strength and sealing. Its surface is flat, which is convenient for close fit with other components to prevent external moisture, dust and other impurities from invading the interior of the bridge. At the same time, the cover plate 5 also has sufficient rigidity to withstand certain external force impacts and protect the safety of the internal structure of the bridge. The stable clamping block 52 is set at the bottom of the outer periphery of the cover plate 5. It is a key component to achieve the mutual clamping of the cover plate 5 and the stable ring groove 21. These stable clamping blocks 52 have a shape and size that matches the stable ring groove 21, which can ensure that the cover plate 5 is accurately inserted into the groove during installation, thereby achieving a stable fixing effect. In order to further enhance the stability of the cover plate 5, a fixing bolt 51 is also penetrated through the top of the outer periphery of the cover plate 5, which is screwed together with the bolt hole 22 opened on the edge of the stable ring groove 21. By tightening the bolt, a tighter connection is formed between the cover plate and the stable ring groove. This double fixing method not only improves the cover's ability to resist wind pressure and vibration, 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 mechanism, and realizes the stable sealing and flexible expansion of the bridge's top structure. This structure not only improves the bridge's ability to resist wind pressure and vibration, but also provides convenient conditions for subsequent maintenance and inspection work.

[0042] Reference Figure 5-6As shown, the lateral damping mechanism 4 includes a mounting plate 41, the bottom of which is provided with evenly distributed mounting openings 42, each of which is provided with sliding balls, the outer wall of the mounting plate 41 is provided with evenly distributed damping rods 43, the end of the fixed damping shell 45 close to the mounting plate 41 is penetrated by the T-shaped rod 44, the end of the fixed damping shell 45 away from the T-shaped rod 44 is provided with a first damping spring 46, the end of the T-shaped rod 44 located in the fixed damping shell 45 is provided with an abutment plate 48, the outer periphery of the end of the fixed damping shell 45 close to the T-shaped rod 44 is provided with a surrounding embedded groove 49, a second damping spring 47 is provided between the T-shaped rod 44 and the embedded 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 shell 45, the second damping spring 47 surrounds the outer wall between the T-shaped rod 44 and the embedded groove 49, and the mounting plate 41 serves as the installation base of the lateral damping mechanism 4. In this embodiment, evenly distributed mounting openings 42 are provided at the bottom of the mounting plate 41 for installing sliding balls. These mounting openings not only ensure the stable installation of the sliding balls, but also enable the mounting plate to slide smoothly in the yield sliding circular groove 23 in the chassis 2, thereby adapting to the lateral vibration of the bridge. The sliding balls are installed in the mounting openings 42, and the friction resistance between the mounting plate 41 and the yield sliding circular groove 23 is reduced through their rolling action, so that the mounting plate can slide more smoothly. At the same time, the sliding balls also have a certain buffering effect and can absorb part of the vibration energy. The fixed damping shell 45 is installed on the outer ring wall of the mounting plate 41 to provide protection for the internal damping mechanism; the fixed damping shell 45 is designed with a sliding channel for the T-bar 44 and a space for installing the first damping spring 46 and the second damping spring 47. The T-bar 44 and the abutment plate 48 pass through one end of the fixed damping shell 45. When the bridge occurs During lateral vibration, the mounting plate 41 drives the T-bar 44 and the abutment plate 48 to move together, and the abutment plate 48 abuts against the first damping spring 46 to consume vibration energy through compression and release of the spring. The second damping spring 47 is arranged at the end of the fixed damping shell 805 away from the T-bar 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, thereby ensuring the stability of the damping mechanism during vibration. The lateral damping mechanism 4 achieves effective absorption and dissipation of the lateral vibration energy of the bridge through the coordinated action of components such as the mounting plate 41, sliding balls, fixed damping shell 45, T-bar 44, first damping spring 46, second damping spring 47 and abutment plate 48. This design not only improves the anti-resonance performance of the bridge, but also enhances the stability and safety of its overall structure.

[0043] In this embodiment, when the bridge vibrates longitudinally, the magnetic field in the electromagnetic surround ring changes with the vibration, forming an induced current, which interacts with the original magnetic field to generate an effective damping force to consume the vibration energy.

[0044] The electromagnetic damping force of the longitudinal electromagnetic damping mechanism is calculated according to 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 / m2), B is the magnetic field strength (T), and V is the volume inside the electromagnetic ring.

[0045] The induced current density J can be expressed by the relationship between Ohm's law and the electric field strength E. Its expression is J = σE, where σ is the conductivity. According to Faraday's law of induction, the electric field strength E is generated by the time-varying magnetic field. Its expression is Combining the above formula, 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 damping force F d The stronger.

[0046] The magnetic field intensity B generated by the longitudinal electromagnetic damping mechanism can be calculated by Ampere's loop law, and its expression is: Where μ0 is the vacuum magnetic permeability, which is approximately 4π×10 -7 T·m / A.

[0047] For a coil with n turns, the expression of magnetic field intensity B is B = μ0·n·I, where I is the current intensity passing through the electromagnetic ring. The expression of I is Where R is the resistance of the coil and P is the power.

[0048] The longitudinal electromagnetic damping mechanism requires electric drive, and its power demand P is calculated as: 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 best damping effect. For vibrations of different intensities, the current size and magnetic field strength can be dynamically adjusted through the feedback control system.

[0049] The electromagnetic damping system reduces the vibration amplitude of the bridge by consuming vibration energy. The expression of its energy dissipation E is: Among them, T is the vibration period, P(t) is the instantaneous power, and the electromagnetic damping mechanism generates heat in the resistor through the current, dissipating the mechanical energy of the vibration, thereby reducing the vibration energy.

[0050] In summary, the bridge anti-resonance system provided by the present invention has the following beneficial technical effects: the present invention effectively absorbs and dissipates the energy generated by the bridge in lateral vibration through multiple damping mechanisms; this combined effect significantly enhances the anti-resonance ability of the bridge, reduces the structural damage and fatigue damage caused by resonance, and the stable installation and precise matching 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 the sliding ball enables the mechanism to respond to vibration flexibly, while the fixed damping shell and the various damping elements inside provide the necessary support and damping effects, and jointly maintain the overall stability of the bridge structure, and by reducing the impact and fatigue effects 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.

[0051] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements. Finally, it should be noted that: Obviously, the above embodiments are only examples made to clearly illustrate the present invention, and are not limitations on the implementation methods. For ordinary technicians in the field, other different forms of changes or modifications can also be made on the basis of the above description. It is not necessary and impossible to exhaust all implementation methods here. And the obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

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

2. The bridge anti-resonance system according to claim 1, characterized in that: The longitudinal damping structure includes an electromagnetic surrounding ring and an inner magnetic ball, wherein the inner magnetic ball is embedded in the electromagnetic surrounding ring, and demagnetizing connecting columns are provided at both ends of the electromagnetic surrounding ring, and the longitudinal damping structure is connected to the inside of the longitudinal column through the demagnetizing connecting columns.

3. The bridge anti-resonance system according to claim 2, characterized in that: The electromagnetic surrounding ring is composed of a plurality of electromagnetic rings which are distributed crosswise and overlapped with each other.

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

5. The bridge anti-resonance system according to claim 1, characterized in that: An observation window is also provided on the longitudinal column, 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 edge of the chassis is surrounded by a stabilizing ring groove, and a plurality of bolt holes are sequentially surrounded in the stabilizing ring groove. The cover plate is correspondingly provided with fixing bolts, so that the cover plate can be installed around the chassis.

7. The bridge anti-resonance system according to claim 6, characterized in that: A stabilizing block is provided at the outer bottom of the cover plate away from the longitudinal column, the fixing bolt is penetrated at the outer top 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 clamped to each other with the stabilizing ring groove through the stabilizing block, and the fixing bolt and the bolt hole are screwed to each other, thereby ensuring the stability of the cover plate when connected to the chassis.

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

9. The bridge anti-resonance system according to claim 8, characterized in that: The bottom of the mounting plate is provided with a plurality of mounting openings which are evenly distributed, and sliding balls are arranged in the plurality of mounting openings, so that the mounting plate can slide smoothly in the yielding sliding circular groove in 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 T-shaped rods connected thereto, the end of the fixed damping shell close to the mounting plate is penetrated by the T-shaped rods, the first damping spring is provided at the end of the fixed damping shell away from the T-shaped rod, the T-shaped rod is provided with an abutment plate at one end located in the fixed damping shell, the fixed damping shell is provided with a surrounding embedded groove on the periphery of one end close to the T-shaped rod, the second damping spring is provided between the T-shaped rod and the embedded 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 embedded groove to further increase the damping effect.

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