TLD bridge damping device with disc-shaped water tank

Abstract

The invention relates to the technical field of vibration damping devices, in particular to a TLD bridge vibration damping device with disc-shaped water tanks, which comprises a plurality of vibration damping mechanisms arranged at the bottom in a box girder and used for dissipating energy, each vibration damping mechanism comprises a disc-shaped water tank used for storing liquid, and a drainage assembly used for guiding the liquid is arranged in each disc-shaped water tank. A buffering assembly used for buffering the dish-shaped water tank is arranged at the bottom of the dish-shaped water tank and comprises a supporting part arranged in the center of the bottom of the dish-shaped water tank, a plurality of buffering parts are arranged on the periphery of the supporting part, one end of each buffering part is installed at the bottom of the dish-shaped water tank, and the other end of each buffering part is installed at the bottom in the box girder. Liquid can fully flow in all directions in the dish-shaped water tank through the dish-shaped water tank, the flowing paths of the liquid in the dish-shaped water tank are diversified through the drainage assembly, changes of the acceleration and the flow speed are provided, energy is consumed through dynamic side force generated when the liquid shakes, and the damping and buffering effects are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of vibration reduction devices, and in particular to a TLD bridge vibration reduction device with a disc-shaped water tank. Background Art

[0002] With the rapid development of the transportation industry, the number of bridges being built is increasing. At the same time, the number of traffic that bridges bear every day is also very large. Bridges are prone to vibration under the influence of crowd loads, car loads, wind loads, and earthquakes. If this continues for a long time, it will cause damage to the bridges and affect their service life. It may also cause serious casualties and property losses.

[0003] The vibration reduction principle of the tuned liquid damper (TLD) is to use the dynamic lateral force generated by the liquid in the fixed water tank during the shaking process to provide vibration reduction. At the same time, it can also adjust its own frequency to match the vibration frequency of the building to achieve resonance to reduce vibration. Most of the existing TLD water tanks are rectangular or cylindrical. Due to the sharp edges and corners of the rectangular water tank, the liquid will frequently collide with the edges and corners during the shaking process, causing the flow direction and speed of the liquid to suddenly change, thereby limiting the dynamic lateral force generated when the liquid shakes. Although there is no influence of the edges and corners when the cylindrical water tank shakes the liquid, due to the relatively sudden spatial change in the radial direction, the movement characteristics of the liquid in the area close to the center and the circumference are quite different, which limits the dynamic lateral force generated when the liquid shakes. In addition, most of the existing TLD water tanks are fixed water tanks, which have limitations in dealing with multi-directional vibrations. In addition, when the existing TLD shakes rapidly, the internal liquid will form complex vortices and water flows in the water tank, making the vibration reduction effect unstable and easily causing damage to the bridge. Summary of the invention

[0004] The purpose of the present invention is to provide a TLD bridge vibration reduction device with a disc-shaped water tank to solve the problems existing in the above-mentioned prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following scheme: a TLD bridge vibration reduction device with a dish-shaped water tank, comprising a plurality of vibration reduction mechanisms for consuming energy arranged at the bottom of a box girder, the vibration reduction mechanism comprising a dish-shaped water tank for storing liquid, a drainage assembly for diverting the liquid being arranged in the dish-shaped water tank, a buffer assembly for buffering the dish-shaped water tank being arranged at the bottom of the dish-shaped water tank, the buffer assembly comprising a support portion arranged at the center of the bottom of the dish-shaped water tank, a plurality of buffer portions being arranged around the support portion, one end of the buffer portion being installed at the bottom of the dish-shaped water tank, and the other end of the buffer portion being installed at the bottom of the box girder.

[0006] Preferably, the drainage assembly includes a plurality of baffles fixedly connected to the dish-shaped water tank, and a plurality of through holes are formed at one end of the baffle close to the bottom of the dish-shaped water tank.

[0007] Preferably, the baffle is in a circular ring shape.

[0008] Preferably, the diameters of the plurality of baffles are different.

[0009] Preferably, the centers of the plurality of baffles are arranged concentrically with the center of the disc-shaped water tank.

[0010] Preferably, the heights of the two innermost and outermost baffles are greater than the height of the middle baffle.

[0011] Preferably, the support portion includes a center column fixedly connected to the box beam, a support pad is installed at one end of the center column away from the box beam, a ball is installed in one end of the support pad away from the center column, the ball is rotatably connected to a soft rubber suction cup, and the soft rubber suction cup is installed at the bottom center of the dish-shaped water tank.

[0012] Preferably, the support pad is arranged in a concave shape.

[0013] Preferably, the central axis of the central column and the central axis of the disc-shaped water tank are on the same central axis.

[0014] Preferably, the buffer part includes a spring and a damper, one end of the spring and the damper is connected to the bottom of the disc-shaped water tank through a metal support rod, and one end of the spring and the damper is connected to the bottom of the box beam through the metal support rod.

[0015] The present invention discloses the following technical effects:

[0016] The present invention uses a dish-shaped dish-shaped water tank to enable liquid to flow fully in all directions in the dish-shaped water tank, and utilizes the dynamic lateral force when the liquid shakes to consume energy, thereby achieving a vibration reduction effect; the drainage component can diversify the flow path of the liquid in the dish-shaped water tank, so that the dish-shaped water tank can provide the liquid with acceleration and flow rate changes when the liquid shakes, effectively guiding the flow pattern of the liquid to generate dynamic lateral force during the shaking process, so that a stronger impact is formed at the edge of the dish-shaped water tank, so that the dynamic lateral force can act on the dish-shaped water tank more effectively, and the support component allows the dish-shaped water tank to swing with multiple degrees of freedom; and the buffer component is used to buffer the multi-freedom swing of the dish-shaped water tank, thereby achieving a vibration reduction and buffering effect, and effectively extending the service life of the box beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the structure of the present invention installed in a box beam;

[0019] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 3 This is a bottom view of the structure of the dish-shaped water tank of the present invention;

[0021] Figure 4 It is a schematic diagram of the top view of the disc-shaped water tank of the present invention;

[0022] Figure 5 It is a schematic diagram of the partial structure inside the dish-shaped water tank of the present invention;

[0023] Among them, 1. vibration reduction mechanism; 2. box beam; 3. disc-shaped water tank; 4. liquid; 5. spring; 6. damper; 7. soft rubber suction cup; 8. metal support rod; 9. support pad; 10. ball; 11. center column; 12. baffle; 13. through hole. DETAILED DESCRIPTION

[0024] The possible implementation schemes found in the art are:

[0025] The patent publication number CN110080088A discloses a grid plate type tuned water tank damper, including a water tank, the water tank is a groove with an open top surface, the groove has a bottom surface and a groove wall, the bottom surface is connected to the groove wall, the groove wall includes an inner wall surface and an outer wall surface, water is stored in the groove, and also includes X rows of grid plates, X is a natural number not less than 1, the grid plates are vertically fixed in the groove by a fixing device on the inner wall of the groove, and the water tank is divided into X+1 compartments, and small holes are distributed on the grid plates. The fixing device is a positioning card slot vertically and symmetrically arranged on the inner wall surface of the groove. The logarithm of the positioning card slot is X, corresponding to the number of rows of the grid plate. The height of the positioning card slot is less than the height of the groove wall. The height of the grid plate is equal to the height of the groove wall. The small holes are equidistantly distributed on the grid plate, and the shape of the small holes is one or more of square, circular, and triangular. The water tank is a rectangular parallelepiped with an open top surface. The small hole is circular, and its diameter is 1 / 20-1 / 10 of the minimum value of the height and width of the cuboid; the small hole is square or triangular, and its side length is 1 / 20-1 / 10 of the minimum value of the height and width of the cuboid. The ratio of the height of the water body in the water tank to the length of the water tank in the vibration direction is 1 / 25-1 / 2, and the vibration direction is the vibration direction of the water tank. X+1 compartments are equally divided in the water tank, with the same structure, and the compartments are cuboids. The total damping is equal to the sum of the damping generated by the friction between the water body, the water body and the inner wall of the water tank during vibration, and the damping when the water body passes through the small holes on the grid plate. The amount of water in the water tank can adjust the mass ratio of the grid plate type tuning water tank damper and the main structure connected to the damper; the number of rows of the grid plate can adjust the damping ratio of the system to which the damper belongs.

[0026] The design principle of the invention is: the grid plate type tuned water tank damper provided by the invention is rigidly installed on the main structure. Under the action of dynamic loads (wind loads, seismic loads, etc.), the main structure drives the water tank of the damper to vibrate together, thereby causing the water in the water tank to slosh. The friction generated by the sloshing of the water boundary layer, the broken waves generated under strong excitation, and the vortex flow around the small holes of the grid plate can dissipate the energy of the main structure vibration, thereby achieving control of the main structure vibration.

[0027] The design idea of ​​the invention is:

[0028] 1) Select the appropriate mass ratio (i.e. the ratio of the total mass of the water body to the total mass of the main structure) according to the specific requirements of the main structure.

[0029] 2) Select the size of the water tank and determine the number of grille plates based on the space allowed by the main structure.

[0030] 3) Establish a finite element analysis system, analyze its dynamic parameters (frequency ratio and damping ratio, etc.), continuously adjust the number and position of the grid plates according to the finite element analysis results, and establish a corresponding database for subsequent screening.

[0031] 4) Filter out the grille plate setting scheme that meets the requirements from the established database.

[0032] The invention has the following beneficial effects and advantages:

[0033] (1) The grid plate type tuned water tank damper provided by the invention has a simple structure and is flexible to use. The size and arrangement of the water tank can be flexibly adjusted according to the spatial size of the main structure;

[0034] (2) The design principle of the invention is simple, and the grid plate is easy to adjust. The grid plate can significantly reduce the nonlinear characteristics of ordinary TLD, avoid nonlinear characteristics such as "frequency hopping" and "frequency offset", and can also adjust the damping size provided by the damper;

[0035] (3) The grating plate type tuned water tank damper provided by the invention is easy to install and has multiple uses. It only requires setting a grating plate in an ordinary TLD, which is low in cost. At the same time, the water stored in the water tank can also be used in the construction of buildings or bridges, so that resources are fully utilized and the application prospects are very broad.

[0036] Patent publication number CN115949010A discloses a three-chamber rectangular water tank MTLD device for vibration reduction in bridge construction, including a rectangular water tank, two partition plates installed inside the rectangular water tank, vertical support angle steels and oblique support angle steels welded to the external front facade of the rectangular water tank, horizontal stiffening angle steels welded to the upper edges of the external front facade and side facades of the rectangular water tank, steel hanging ears welded at the four corners of the external top surface of the rectangular water tank, an I-beam base welded to the external bottom surface of the rectangular water tank, a water inlet pipe and a drainage pipe installed on the external side facade of the rectangular water tank, and water poured into the rectangular water tank.

[0037] The invention has the following outstanding essential features and remarkable advantages:

[0038] 1) The invention adjusts the natural frequency of the water tank by adjusting the water depth in the water tank, which can easily achieve the consistency between the natural frequency of the water tank and the natural frequency of the bridge that gradually changes during the bridge construction process, thereby achieving the expected vibration reduction effect.

[0039] 2) The invention can independently adjust the water depth in the three chambers to adjust the three natural frequencies of the water tank MTLD device. When the middle frequency of the water tank is equal to the natural frequency of the bridge, and the maximum frequency and minimum frequency of the water tank are 1.1 times and 0.9 times the natural frequency of the bridge respectively, the vibration reduction efficiency can be ensured while greatly improving the vibration reduction stability and reliability of the device.

[0040] 3) The water tank of the invention has a simple structure, and the vibration reduction working medium is liquid water, which can be recycled and has low cost. When there is no demand for bridge vibration reduction function in non-strong wind weather, the water in the water tank can also be used as a backup water source for bridge construction and fire fighting water. Compared with the tuned mass damper (TMD), the invention has obvious economic advantages.

[0041] 4) The water tank of the present invention is easy to install. The steel lifting ears at the four corners of the outer top surface of the water tank can be lifted using the lifting machinery commonly used at the bridge construction site. The installation position of the water tank can be easily adjusted. As the construction of the bridge progresses gradually, the position of the water tank can be adjusted to the cantilever end beam of the newly erected bridge to obtain the best vibration reduction effect.

[0042] 5) The water tank of the invention is suitable for industrial modular production, and its vibration reduction effect is approximately linearly related to the number of water tanks. During the bridge construction process, the appropriate number of water tanks can be selected according to the specific engineering vibration reduction goals.

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0045] Reference Figure 1-Figure 5 The present invention provides a TLD bridge vibration reduction device with a dish-shaped water tank, comprising a plurality of vibration reduction mechanisms 1 for consuming energy arranged at the bottom of a box beam 2, the vibration reduction mechanism 1 comprising a dish-shaped water tank 3 for storing a liquid 4, a drainage component for guiding the liquid 4 being arranged in the dish-shaped water tank 3, a buffer component for buffering the dish-shaped water tank 3 being arranged at the bottom of the dish-shaped water tank 3, the buffer component comprising a supporting portion arranged at the center of the bottom of the dish-shaped water tank 3, a plurality of buffer portions being arranged around the supporting portion, one end of the buffer portion being mounted at the bottom of the dish-shaped water tank 3, and the other end of the buffer portion being mounted at the bottom of the box beam 2.

[0046] Liquid 4 uses liquid 4 with relatively high viscosity. Viscosity is also called "internal friction" or "flow resistance", which is the property inside the fluid that hinders its relative flow.

[0047] In a stationary fluid, the forces acting on either side of any surface must be perpendicular to that surface, and there is no shear stress.

[0048] When a fluid flows in a pipe, the flow velocity of each particle at a certain section is different. The flow velocity close to the pipe wall is zero, and the flow velocity increases as it approaches the center of the pipe. Due to the different flow velocities of each layer, relative motion occurs between the laminar flows at each point, and internal friction resistance that hinders relative motion is generated between adjacent flow layers, which is called viscosity. The property of a liquid having viscosity is called viscosity.

[0049] The present invention uses a dish-shaped dish-shaped water tank 3 to enable the liquid 4 to flow fully in all directions in the dish-shaped water tank 3, and utilizes the dynamic lateral force when the liquid 4 shakes to consume energy, thereby achieving a vibration reduction effect; the drainage component can diversify the flow path of the liquid 4 in the dish-shaped water tank 3, so that the dish-shaped water tank 3 can provide the liquid 4 with acceleration and flow rate changes when the liquid 4 shakes, effectively guiding the flow pattern of the liquid 4 to generate dynamic lateral force during the shaking process, so that a stronger impact is formed at the edge of the dish-shaped water tank 3, so that the dynamic lateral force can act on the dish-shaped water tank 3 more effectively, and the dish-shaped water tank 3 can swing with multiple degrees of freedom through the support component; and the multi-freedom swing of the dish-shaped water tank 3 is buffered by the buffer component, thereby achieving a vibration reduction and buffering effect, and effectively extending the service life of the box beam 2.

[0050] The dish-shaped water tank 3 is shaped like a dish, with a more prominent middle part and a relatively flat edge. Since the overall structure of the dish-shaped water tank 3 is relatively compact, the height of the dish-shaped water tank 3 is relatively low and the floor space is relatively small under the same volume. Moreover, due to the dish-shaped shape, the stress distribution of the dish-shaped water tank 3 is relatively uniform when it is subjected to internal pressure, and it can withstand a certain pressure, thereby ensuring the safety and stability of the dish-shaped water tank 3. Furthermore, since the height of the dish-shaped water tank 3 is relatively low, in some places with limited space, such as inside the box beam 2, the space inside the box beam 2 can be better utilized to save installation space.

[0051] The disc-shaped water tank 3 has a better energy consumption effect. When resisting torsional vibration or small shaking in multiple directions, the liquid 4 can fully flow in all directions in the disc-shaped water tank 3, and the dynamic lateral force of the liquid 4 when shaking is used to consume energy, thereby achieving a vibration reduction effect.

[0052] Moreover, the flying saucer-shaped edge of the dish-shaped water tank 3 can make the flow path of the liquid 4 more diverse, and can generate dynamic side forces in more directions. The dish-shaped water tank 3 can provide the liquid 4 with greater acceleration and speed change when the liquid 4 sways, thereby generating greater dynamic side forces.

[0053] The flying saucer shape of the dish-shaped water tank 3 is also helpful in guiding the liquid 4 to form a flow pattern that is more conducive to generating dynamic lateral force during the shaking process, forming a stronger impact at the edge, so that the dynamic lateral force can act on the dish-shaped water tank 3 more effectively.

[0054] In order to make the liquid 4 shake more effectively, the dish-shaped water tank 3 is filled with an appropriate amount of liquid 4, and sufficient space is left between the surface of the liquid 4 and the top surface of the dish-shaped water tank 3, so that the liquid 4 can shake more effectively in the dish-shaped water tank 3.

[0055] In a further optimized solution, the drainage assembly includes a plurality of baffles 12 fixedly connected to the disc-shaped water tank 3, and a plurality of through holes 13 are formed at one end of the baffle 12 close to the bottom of the disc-shaped water tank 3. The through holes 13 can play a role in expanding the frequency adjustment range.

[0056] According to a further optimized solution, the baffle 12 is in a circular ring shape.

[0057] In a further optimized solution, the diameters of the baffles 12 are all different, so that the baffle 12 with a smaller diameter is placed inside the baffle 12 with a larger diameter.

[0058] According to a further optimization scheme, the centers of the plurality of baffles 12 and the center of the disc-shaped water tank 3 are arranged concentrically.

[0059] According to a further optimization scheme, the heights of the two innermost and outermost baffles 12 are greater than the height of the baffle 12 in the middle.

[0060] The baffles 12 are arranged according to their diameters, and natural channels are formed between adjacent baffles 12 to guide and direct the liquid 4 , thereby effectively preventing the liquid 4 from generating complex vortices and currents.

[0061] The height and spacing of the baffles 12 and the size of the through holes 13 can be adjusted according to actual conditions, which can effectively expand the frequency modulation range.

[0062] A further optimized solution is that the supporting part includes a central column 11 fixedly connected to the box beam 2, a support pad 9 is installed at one end of the central column 11 away from the box beam 2, a ball 10 is installed in the end of the support pad 9 away from the central column 11, the ball 10 is rotatably connected to a soft rubber suction cup 7, and the soft rubber suction cup 7 is installed at the bottom center of the disc-shaped water tank 3.

[0063] According to a further optimized solution, the support pad 9 is arranged in a concave shape.

[0064] According to a further optimization scheme, the central axis of the central column 11 and the central axis of the dish-shaped water tank 3 are on the same central axis.

[0065] By moving the ball 10 in the concave shape of the support pad 9, the dish-shaped water tank 3 can swing in multiple degrees of freedom and in multiple directions, thereby achieving multi-directional vibration reduction.

[0066] According to a further optimized solution, the buffer part includes a spring 5 and a damper 6, one end of the spring 5 and the damper 6 is connected to the bottom of the disc-shaped water tank 3 through a metal support rod 8, and one end of the spring 5 and the damper 6 is connected to the bottom of the box beam 2 through the metal support rod 8.

[0067] The spring 5 can provide buffering and resetting effects when the disc-shaped water tank 3 is pressed down, and the damper 6 is used to vertically reduce vibration and energy consumption; by connecting the spring 5 and the damper 6 in parallel, the stiffness coefficients of the spring 5 and the damper 6 are multiplied, so that the overall damping ratio of the spring 5 and the damper 6 is increased, and the overall stiffness is reduced, which can effectively keep the frequency unchanged and effectively improve safety and stability.

[0068] The damper 6 may be an air damper, a friction damper or the like.

[0069] Working process:

[0070] When the bridge vibrates at a low frequency, it will cause the vibration of the vibration reduction mechanism 1 in the box girder 2. This low frequency vibration has a low frequency, the number of times the object vibrates per unit time is small, and each vibration cycle is long. When subjected to a certain energy impact, it is easier to produce a large displacement, that is, an amplitude. Under this low frequency vibration, the disc-shaped water tank 3 will also have a large amplitude. At this time, since the disc-shaped water tank 3 can provide a larger acceleration and speed change for the liquid 4 when the liquid 4 is shaking, thereby generating a larger dynamic lateral force, a stronger impact is formed at the edge of the disc-shaped water tank 3, so that the dynamic lateral force can act more effectively on the disc-shaped water tank 3, and the dynamic lateral force generated by the liquid 4 when it shakes greatly and the resistance of the baffle 12 are used to effectively dissipate energy; at the same time, a natural channel will be formed between the two adjacent baffles 12, which can play a role in diversion and drainage when the disc-shaped water tank 3 swings violently, avoiding the liquid 4 from generating complex vortices and water flows; and the spring 5 and damper 6 at the bottom can respectively play the role of buffering reset and vertical vibration reduction when the disc-shaped water tank 3 swings greatly.

[0071] When the bridge vibrates at high frequency, the object does not have time to move greatly to enter the next vibration cycle because of the high frequency and short period, so the amplitude is small. Under this high-frequency vibration, the liquid 4 is restricted by the high baffle 12 and does not have enough time to flow smoothly like it does during low-frequency vibration. Instead, it changes its flow direction quickly in a smaller space. In addition, the natural channels formed between each circle of baffles 12 and the through holes 13 under each circle of baffles 12 can effectively consume the energy of high-frequency vibration through the rapid changes of the liquid 4.

[0072] The present invention effectively achieves the effect of vibration reduction and buffering through the multi-degree-of-freedom swing of the disc-shaped water tank 3 and the central column 11 and the mutual cooperation of the spring 5 and the damper 6, and effectively prolongs the service life of the bridge.

[0073] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0074] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A TLD bridge vibration reduction device with a disc-shaped water tank, characterized in that: The invention comprises a plurality of vibration-damping mechanisms (1) for consuming energy, which are arranged at the bottom of a box beam (2); the vibration-damping mechanism (1) comprises a disc-shaped water tank (3) for storing liquid (4); a drainage component for guiding the liquid (4) is arranged in the disc-shaped water tank (3); a buffer component for buffering the disc-shaped water tank (3) is arranged at the bottom of the disc-shaped water tank (3); the buffer component comprises a support portion arranged at the center of the bottom of the disc-shaped water tank (3); a plurality of buffer portions are arranged around the support portion; one end of the buffer portion is mounted on the bottom of the disc-shaped water tank (3); and the other end of the buffer portion is mounted on the bottom of the box beam (2).

2. The TLD bridge vibration reduction device with a dish-shaped water tank according to claim 1 is characterized in that: The drainage assembly comprises a plurality of baffles (12) fixedly connected to the disc-shaped water tank (3); a plurality of through holes (13) are formed at one end of the baffles (12) close to the bottom of the disc-shaped water tank (3).

3. The TLD bridge vibration reduction device with a dish-shaped water tank according to claim 2 is characterized in that: The baffle (12) is in the shape of a circular ring.

4. The TLD bridge vibration reduction device with a dish-shaped water tank according to claim 2 is characterized in that: The diameters of the plurality of baffles (12) are all different.

5. The TLD bridge vibration reduction device with a dish-shaped water tank according to claim 2 is characterized in that: The centers of the plurality of baffles (12) are arranged concentrically with the center of the disc-shaped water tank (3).

6. The TLD bridge vibration reduction device with a dish-shaped water tank according to claim 2, characterized in that: The heights of the two baffles (12) located at the innermost side and the outermost side are greater than the height of the baffle (12) located in the middle.

7. The TLD bridge vibration reduction device with a dish-shaped water tank according to claim 1, characterized in that: The support portion comprises a central column (11) fixedly connected to the box beam (2); a support pad (9) is installed at one end of the central column (11) away from the box beam (2); a ball (10) is installed in one end of the support pad (9) away from the central column (11); the ball (10) is rotatably connected to a soft rubber suction cup (7); and the soft rubber suction cup (7) is installed at the bottom center of the disc-shaped water tank (3).

8. The TLD bridge vibration reduction device with a dish-shaped water tank according to claim 7 is characterized in that: The support pad (9) is arranged in a concave shape.

9. The TLD bridge vibration reduction device with a dish-shaped water tank according to claim 7, characterized in that: The central axis of the central column (11) and the central axis of the disc-shaped water tank (3) are located on the same central axis.

10. The TLD bridge vibration reduction device with a dish-shaped water tank according to claim 1, characterized in that: The buffer part comprises a spring (5) and a damper (6); one end of the spring (5) and the damper (6) are connected to the bottom of the disc-shaped water tank (3) via a metal support rod (8); and one end of the spring (5) and the damper (6) are connected to the bottom of the box beam (2) via the metal support rod (8).

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