Three-way self-resetting energy dissipation seismic isolation bearing

Abstract

The application relates to a three-way self-resetting energy dissipation isolation bearing, the top of a first bottom plate is connected with a second bottom plate, three first pipes are arranged on the two sides of the second bottom plate, first reset springs are connected on the two first pipes located on the two sides, the top of the second bottom plate is connected with a third bottom plate, two second pipes are arranged at the two ends of the third bottom plate, second reset springs are connected on the two second pipes, a third groove for connecting a transmission device is formed on the top surface of the third bottom plate, a vertical supporting device is arranged in the middle of the transmission device, and a top plate is connected with the top of the vertical supporting device; the two horizontal and one vertical seismic components are decoupled, energy dissipation isolation is considered in three directions, vertical displacement is amplified to a certain extent through a transmission connecting rod, the vertical energy dissipation capacity is greatly increased, if some parts are damaged after the earthquake, the parts can be replaced alone, the whole bearing does not need to be replaced, the cost is reduced, and the green development concept is maintained.

Description

Technical Field

[0001] This invention relates to a three-dimensional self-resetting energy-dissipating seismic isolation bearing, which is applied in the field of building seismic isolation bearing technology. Background Technology

[0002] As is widely known, modern seismic isolation technology is currently widely used in various fields of civil engineering. Compared to seismic resistance, seismic isolation structures have gained widespread recognition in the industry due to their excellent damping effect, safety, durability, economy, and practicality. However, in previous seismic isolation designs, the impact of vertical seismic waves on building structures was largely overlooked. Seismic waves affect building structures with two horizontal seismic components, one vertical seismic component, and three rotational seismic components. For structural safety, the vertical seismic component is often indispensable. With the increasing maturity of energy dissipation and damping technology, more and more energy dissipation and damping concepts are emerging. However, research on vertical seismic isolation bearings still mainly focuses on traditional disc springs, with a generally limited scope and limited application in practical engineering.

[0003] Traditional rubber seismic isolation bearings have drawbacks such as poor deformation capacity and weak self-centering ability. Under strong earthquakes, they are prone to large plastic deformation, leading to structural overturning and failure. In addition, the weak self-centering ability also reduces the service life of the seismic isolation bearings. Moreover, after an earthquake, the cost of replacing the entire bearings is too high, so post-earthquake repair is undoubtedly very important.

[0004] A utility model patent with publication number CN210032111U discloses a seismic isolation rubber bearing device with tensile strength, including an upper guide rail system, a lower guide rail system, an upper seismic isolation rubber bearing, and a lower seismic isolation rubber bearing. The upper and lower guide rail systems are decoupled from and independent of the upper and lower seismic isolation rubber bearings, respectively. Furthermore, the upper and lower guide rail systems can slide perpendicularly to each other via guide rails and sliders, ensuring arbitrary horizontal movement of the upper and lower seismic isolation rubber bearings, effectively reducing the seismic load on the isolation structure. Simultaneously, it provides significant tensile strength, offering a safety margin to prevent structural failure due to the tension of either the upper or lower seismic isolation rubber bearing. While this seismic isolation bearing considers vertical isolation, it does not account for the effects of multi-directional horizontal seismic forces. Additionally, the bearing lacks self-resetting capability and is difficult to repair after an earthquake.

[0005] Therefore, how to provide a multi-directional, highly efficient energy-dissipating, seismic isolation, and green and economical energy-absorbing and damping component is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention provides a three-directional self-resetting energy-dissipating seismic isolation bearing. Through energy dissipation and seismic isolation in three seismic directions and post-earthquake self-resetting, it is safer than the two-directional seismic isolation and energy dissipation of most bearings, and greatly reduces the deformation of buildings after an earthquake.

[0007] The technical solution of the present invention is as follows:

[0008] A three-dimensional self-resetting energy-dissipating seismic isolation bearing includes a first base plate, a second base plate connected to the top of the first base plate, three first guide tubes on both sides of the second base plate, a first reset spring connected to two of the first guide tubes on each side, the inner end of each first guide tube connected to the side wall of the second base plate, and the outer end of each first guide tube connected to a first stop block, the bottom of the first stop block welded to the first base plate, and two first stop blocks symmetrically arranged on both sides of the second base plate; a third base plate connected to the top of the second base plate, two second guide tubes on both ends of the third base plate, a second reset spring connected to each second guide tube, the inner end of each second guide tube connected to the end of the third base plate, and the outer end of each second guide tube connected to a second stop block, the bottom of the second stop block welded to the third base plate, and two second stop blocks symmetrically arranged at both ends of the third base plate; a third groove for connecting a transmission device is formed on the top surface of the third base plate, a vertical support device is provided in the middle of the transmission device, and a top plate is connected to the top of the vertical support device.

[0009] The vertical support device includes a column, a vertical spring connected to the bottom of the column, a circular plate connected to the bottom of the vertical spring, a vertical cylinder sleeved on the outside of the column, the bottom of the vertical cylinder welded to the circular plate, and grooves and reserved holes for connecting the plug rods respectively opened on the vertical cylinder and the column; two support rods are welded to the outer wall of the column, and the two sets of vertical support devices are fixed together by a crossbar; several baffles are evenly distributed on the bottom of the outer wall of the vertical cylinder, the baffles are right-angled triangular structures, and the baffles stably fix the vertical cylinder to the top surface of the third base plate.

[0010] The transmission device includes four transverse cylinders, each corresponding to a third groove. The transverse cylinders are welded to the top surface of the third base plate. A sleeve rod is connected inside the transverse cylinder, and several rings are threaded to the outside of the sleeve rod. A slider is connected to the other end of the sleeve rod, and the slider is slidably connected to the third groove. A guide rail is connected to the other side of the slider, and a third return spring is sleeved on the outside of the guide rail. One end of the third return spring is fixedly connected to the slider, and the other end of the third return spring is fixedly connected to the guide rail. The inner end of the guide rail is fixedly connected to the third base plate.

[0011] A first connecting rod is provided on the top surface of the slider, a second connecting rod is provided at the right end of the first connecting rod, a third connecting rod is fixed in the middle of the second connecting rod, and a fourth connecting rod is provided at the right end of the third connecting rod.

[0012] The two ends of the first connecting rod are rotatably connected to the slider and the second connecting rod, respectively. The right end of the second connecting rod is rotatably connected to the inner end of the guide rail. The right end of the third connecting rod is rotatably connected to the fourth connecting rod. The right end of the fourth connecting rod is rotatably connected to the plug-in rod.

[0013] The top surface of the first base plate has two symmetrical first grooves. The first groove is a T-shaped groove and one end of the first groove is a through-open structure. The bottom of the second base plate is connected to the first base plate by a groove plate that is adapted to the first groove. The through end of the first groove is sealed and closed by a sealing block and a cover plate respectively.

[0014] Two symmetrical second grooves are provided on the top surface of the second base plate. One end of the second groove is a through-open structure. The three first conduits on the left side of the second base plate and the three first conduits on the right side are symmetrically arranged. The inner end of each first conduit is inserted into the second base plate through a reserved hole opened in the side wall of the second base plate. The through end of the second groove is closed by setting a T-shaped block.

[0015] The second groove is arranged perpendicular to the first groove.

[0016] The two second conduits at the front end of the third base plate and the two second conduits at its rear end are symmetrically arranged. The inner end of each second conduit is inserted into the third base plate through a reserved hole at the end of the third base plate. The two second blocks are flush with the ends of the first base plate and the second base plate, respectively.

[0017] The bottom surface of the top plate is welded to the top surface of the column and the support rod, respectively.

[0018] The present invention has the following beneficial effects:

[0019] 1. This invention decouples two horizontal and one vertical seismic components, with each of the three directions taking into account both energy dissipation, seismic isolation, and self-resetting functions. Under certain material conditions, the seismic isolation bearing can effectively dissipate seismic energy with large displacements or velocities, thereby ensuring the safety of the main structure. Therefore, under certain seismic displacement conditions, the structural displacement can be converted by a transmission device, and then the displacement or velocity can be amplified. This increases energy dissipation without increasing the displacement of the building structure itself. This invention amplifies the vertical displacement to a certain extent through a transmission device, greatly increasing the vertical energy dissipation capacity.

[0020] 2. This invention is assembled from various small parts. If a part is damaged after an earthquake, it can be replaced individually without replacing the entire support, thus reducing costs while adhering to the concept of green development.

[0021] 3. The seismic response of building structures under longitudinal waves cannot be ignored. This invention can isolate three directions, which is safer in terms of energy dissipation compared to the two-way isolation of most supports. Moreover, the energy dissipation mode of this invention is clear, the force transmission path is easy to understand, and it has a self-resetting function, which greatly reduces the deformation of buildings after an earthquake. This invention has superior vertical energy dissipation, displacement amplification effect, and damaged parts after an earthquake can be replaced, which has good economic benefits. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the first base plate in this invention;

[0024] Figure 3 This is a schematic diagram of the connection structure between the first base plate and the second base plate in this invention;

[0025] Figure 4 This is a schematic diagram of the connection structure between the second base plate and the third base plate in this invention;

[0026] Figure 5 This is a schematic diagram of the disassembled structure of the column rod and the vertical cylinder in this invention;

[0027] Figure 6 This is a schematic diagram of the connection structure of the vertical support device in this invention;

[0028] Figure 7 This is a schematic diagram of the disassembled structure of the transverse cylinder, guide rail, and third base plate in this invention;

[0029] Figure 8 This is a schematic diagram of the connection structure between the transverse cylinder and the porous circular plate in this invention;

[0030] Figure 9 This is a schematic diagram of the structure of the first link, the second link, the third link, and the fourth link in this invention;

[0031] Figure 10 This is a schematic diagram of the connection structure between the transmission device and the vertical support device in this invention;

[0032] Figure 11 This is a schematic diagram of the first state of the present invention;

[0033] Figure 12 This is a schematic diagram of the second state of the present invention.

[0034] The reference numerals in the figure are as follows:

[0035] 1. First base plate; 101. First groove; 2. Second base plate; 201. Second groove; 3. Sealing block; 4. Cover plate; 5. First guide tube; 6. First return spring; 7. First stop block; 8. Third base plate; 801. Third groove; 9. T-block; 10. Second guide tube; 11. Second return spring; 12. Second stop block; 13. Vertical cylinder; 14. Column rod; 15. Vertical spring; 16. Insert rod; 17. Support rod; 18. Baffle; 19. Guide rail; 20. Third return spring; 21. Slider; 22. Sleeve rod; 23. Horizontal cylinder; 231. Perforated circular plate; 24. Ring; 25. First connecting rod; 26. Second connecting rod; 27. Third connecting rod; 28. Fourth connecting rod; 29. ​​Crossbar; 30. Top plate; 31. Vertical support device; 32. Transmission device. Detailed Implementation

[0036] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0037] See Figures 1 to 12 The aforementioned three-dimensional self-resetting energy-dissipating seismic isolation bearing includes a first base plate 1, a second base plate 2 connected to the top of the first base plate 1, three first guide tubes 5 arranged on both sides of the second base plate 2, and a first return spring 6 connected to two of the first guide tubes located on the sides. The inner end of each first guide tube 5 is connected to the side wall of the second base plate 2, and the outer end of each first guide tube 5 is connected to a first stop block 7. The bottom of the first stop block 7 is welded to the first base plate 1, and the two first stop blocks 7 are symmetrically arranged on both sides of the second base plate 2. A third base plate 8 is connected to the top of the second base plate 2. Two second conduits 10 are provided at both ends of the device, and a second return spring 11 is connected to each second conduit 10. The inner end of each second conduit 10 is connected to the end of the third base plate 8, and the outer end of each second conduit 10 is connected to the second stop block 12. The bottom of the second stop block 12 is welded to the third base plate 8. The two second stop blocks 12 are symmetrically arranged at both ends of the third base plate 8. A third groove 801 for connecting the transmission device 32 is opened on the top surface of the third base plate 8. A vertical support device 31 is provided in the middle of the transmission device 32, and a top plate 30 is connected to the top of the vertical support device 31.

[0038] The vertical support device 31 includes a column 14, with a vertical spring 15 connected to the bottom of the column 14. A circular plate is connected to the bottom of the vertical spring 15. A vertical cylinder 13 is sleeved on the outside of the column 14, and the bottom of the vertical cylinder 13 is welded to the circular plate. The vertical cylinder 13 and the column 14 are respectively provided with a groove and a reserved hole for connecting the insertion rod 16. Two support rods 17 are welded to the outer wall of the column 14. The two sets of vertical support devices 31 are fixed together by a crossbar 29. Several baffles 18 are evenly distributed on the bottom of the outer wall of the vertical cylinder 13. The baffles 18 are right-angled triangular structures, and the baffles 18 stably fix the vertical cylinder 13 to the top surface of the third base plate 8. The baffles 18 provide lateral support and reinforcement for the vertical cylinder 13 (the baffles 18 are fixed by welding or by bolting through changes in component shape).

[0039] The transmission device 32 includes four transverse cylinders 23, each corresponding to a third groove 801. The transverse cylinders 23 are fixed to the top surface of the third base plate 8 (the transverse cylinders 23 are fixed to the third base plate 8 by welding or by bolting through a change in component shape). Several perforated circular plates 231 are provided inside the transverse cylinders 23. A sleeve rod 22 is connected to the transverse cylinder 23. Several rings 24 are threaded to the outside of the sleeve rod 22. The other end of the sleeve rod 22 is connected to a slider 21. The slider 21 is slidably connected to the third groove 801. A guide rail 19 is connected to the other side of the slider 21. A third return spring 20 is sleeved on the outside of the guide rail 19. One end of the third return spring 20 is fixedly connected to the slider 21, and the other end of the third return spring 20 is fixedly connected to the guide rail 19. The inner end of the guide rail 19 is fixedly connected to the third base plate 8. The transverse cylinders 23 are filled with a viscous medium.

[0040] A first connecting rod 25 is provided on the top surface of the slider 21, a second connecting rod 26 is provided at the right end of the first connecting rod 25, a third connecting rod 27 is fixed in the middle of the second connecting rod 26, and a fourth connecting rod 28 is provided at the right end of the third connecting rod 27.

[0041] The two ends of the first connecting rod 25 are rotatably connected to the slider 21 and the second connecting rod 26 respectively. The right end of the second connecting rod 26 is rotatably connected to the inner end of the guide rail 19. The right end of the third connecting rod 27 is rotatably connected to the fourth connecting rod 28. The right end of the fourth connecting rod 28 is rotatably connected to the plug rod 16.

[0042] Two symmetrical first grooves 101 are formed on the top surface of the first base plate 1. The first grooves 101 are T-shaped grooves, and one end of the first grooves 101 is a through-open structure. The bottom of the second base plate 2 is connected to the first base plate 1 by a groove plate adapted to the first grooves 101. The through end of the first grooves 101 is sealed and closed by sealing blocks 3 and cover plates 4 respectively. Before the first base plate 1 is connected to the second base plate 2, the inside of the first grooves 101 is treated with rubber material to ensure its sealing performance after assembly. The second base plate 2 is assembled with the first base plate 1. The second base plate 2 slides into the first groove 101 from the through end and splices. Then, the edges of the first grooves 101 are sealed with two sealing blocks 3 and fixed with bolts. After adjusting the position of the components, a viscous medium is filled into the first grooves 101. Finally, it is sealed with two cover plates 4 with bolt holes. The bottom groove plate of the second base plate 2 has through holes to facilitate viscous energy dissipation during sliding.

[0043] Two symmetrical second grooves 201 are formed on the top surface of the second base plate 2. One end of the second groove 201 is a through-open structure. Three first conduits 5 on the left side of the second base plate 2 and three first conduits 5 on the right side are symmetrically arranged. The inner end of each first conduit 5 is inserted into the second base plate 2 through a reserved hole in the side wall of the second base plate 2. The through end of the second groove 201 is sealed by a T-shaped block 9. The third base plate 8 is assembled with the second base plate 2 and the second base plate 2. The third base plate 8 is slid into the through end of the second groove 201 and spliced, and then the second groove 201 is sealed with a T-shaped block 9.

[0044] The second groove 201 is arranged perpendicularly to the first groove 101.

[0045] The two second conduits 10 at the front end of the third base plate 8 and the two second conduits 10 at its rear end are symmetrically arranged. The inner end of each second conduit 10 is inserted into the third base plate 8 through a reserved hole opened at the end of the third base plate 8. The two second blocks 12 are flush with the ends of the first base plate 1 and the second base plate 2, respectively.

[0046] The bottom surface of the top plate 30 is welded to the top surface of the column rod 14 and the support rod 17, respectively.

[0047] Working principle of the invention:

[0048] The top plate 30 of this support is connected to the column base of the building and is fixed by pre-reserved bolt holes. The first bottom plate 1 under the support is connected to the foundation and is fixed by bolts through pre-reserved bolt holes.

[0049] Under earthquake action, there are two transverse waves and one longitudinal wave, which are transmitted to the first base plate 1 of the support through the foundation. Since there is a displacement in one direction between the first base plate 1 and the second base plate 2, this direction is designated as the X direction. The movement of the first base plate 1 causes relative displacement. The first base plate 1, the second base plate 2, the first guide 5, the first return spring 6, and the first stop block 7, etc., constitute the energy dissipation in the X direction. The second base plate 2 is inserted into the first groove 101 of the first base plate 1. After assembly, the first groove 101 is filled with adhesive. The viscous medium and sealing (the bottom groove plate of the second base plate 2 has a through hole. When the first base plate 1 and the second base plate 2 move, energy is dissipated through the relative movement of the viscous medium and the inner wall of the hole). The viscous medium can be hydraulic oil, silicone oil, silicone adhesive or special suspension, preferably dimethyl silicone oil. Viscous energy is dissipated through the movement of the first base plate 1 and the second base plate 2 in the X direction. The first return spring 6 performs the reset function and the function of storing energy during the earthquake. This is the first stage of energy dissipation and seismic isolation, which is aimed at seismic waves in the X direction.

[0050] Under the action of an earthquake, the seismic wave in the X direction is isolated and dissipated by the structure of the first base plate 1 and the second base plate 2. The seismic wave in the other direction is set as the Y direction. The Y seismic wave is transmitted to the second base plate 2 through the first base plate 1. Since there is a misalignment allowance in the Y direction between the third base plate 8 and the second base plate 2, the second base plate 2 will move relative to the third base plate 8. The second base plate 2 and the third base plate 8 are connected by the second groove 201. At the same time, the second return spring 11, the second guide tube 10, and the second stop block 12 are used for guidance, fixation, and reset. Friction pad material is added in the second groove 201. The misalignment between the second base plate 2 and the third base plate 8 is used to dissipate energy through friction. The second return spring 11 is used for reset and energy storage during the earthquake. In this stage, the seismic energy in the Y direction is weakened. Thus, the energy dissipation and seismic isolation in the two transverse seismic wave directions are completed.

[0051] The longitudinal wave is transmitted sequentially through the foundation to the first base plate 1, the second base plate 2, the third base plate 8, the vertical cylinder 13, and the vertical spring 15. This causes the column rod 14 to misalign with the vertical cylinder 13 (the vertical cylinder 13 has a groove on its wall, which has a limiting function and also facilitates the extension of the connecting rod 16). The vertical spring 15 provides part of the initial vertical stiffness, stores energy during misalignment, and self-resets after vibration. Utilizing the vertical misalignment between the column rod 14 and the lower part of the support, the displacement of the connecting rod 16 is consistent with that of the column rod 14. The two ends of the fourth connecting rod 28 are connected to the connecting rod 16 and the third connecting rod 27, respectively. The first connecting rod 25 is rotatably connected to the slider 21, and the second connecting rod 26 is rotatably connected to the guide rail 19. The relative vertical displacement of the connecting rod 16 causes the movement of the fourth connecting rod 28, which in turn causes the slider to... 21 moves horizontally in the Y direction on the guide rail 19. Part of the slider 21 is in the third groove 801 opened on the third base plate 8, which can improve some frictional energy dissipation. The other end of the slider 21 is connected to the sleeve rod 22. The movement of the slider 21 causes the sleeve rod 22 to move, which in turn pushes and pulls the viscous medium in the transverse cylinder 23. The transverse cylinder 23 is fixed with a perforated circular plate 231 to dissipate viscous energy. Therefore, the vertical relative displacement is converted into the horizontal movement of the slider 21, which dissipates friction and viscous energy, and at the same time has the effect of displacement and velocity amplification. The transmission devices 32 on both sides are symmetrical. At this point, the energy dissipation and seismic isolation in the longitudinal wave direction has been completed. Finally, the weakened seismic energy is transmitted to the top plate 30 through the column rod 14, and then to the upper main structure.

[0052] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A three-dimensional self-resetting energy-dissipating seismic isolation bearing, characterized in that: The system includes a first base plate (1), with a second base plate (2) connected to the top of the first base plate (1). Three first guide tubes (5) are provided on both sides of the second base plate (2). A first reset spring (6) is connected to each of the two first guide tubes (5) located on either side. The inner end of each first guide tube (5) is connected to the side wall of the second base plate (2), and the outer end of each first guide tube (5) is connected to a first stop block (7). The bottom of the first stop block (7) is welded to the first base plate (1). Two first stop blocks (7) are symmetrically arranged on the second base plate. The two sides of the plate (2); the top of the second base plate (2) is connected to the third base plate (8), and two second conduits (10) are provided at both ends of the third base plate (8). A second reset spring (11) is connected to each second conduit (10). The inner end of each second conduit (10) is connected to the end of the third base plate (8), and the outer end of each second conduit (10) is connected to the second stop (12). The bottom of the second stop (12) is welded to the third base plate (8). The two second stops (12) are arranged symmetrically in the third base plate (8). The bottom plate (8) has two ends; the top surface of the third bottom plate (8) is provided with a third groove (801) for connecting the transmission device (32), the transmission device (32) is provided with a vertical support device (31) in the middle, and the top of the vertical support device (31) is connected to a top plate (30); the vertical support device (31) includes a column rod (14), the bottom of the column rod (14) is connected to a vertical spring (15), the bottom of the vertical spring (15) is connected to a circular plate, and a vertical cylinder (13) is sleeved on the outside of the column rod (14). 3) The bottom is welded to the circular plate. The vertical cylinder (13) and the column (14) are respectively provided with a groove and a reserved hole for connecting the plug rod (16). Two support rods (17) are welded on the outer wall of the column (14). The two sets of vertical support devices (31) are fixed by a crossbar (29). Several baffles (18) are evenly distributed on the bottom of the outer wall of the vertical cylinder (13). The baffles (18) are right-angled triangular structures. The baffles (18) stably fix the vertical cylinder (13) on the top surface of the third base plate (8).

2. The three-dimensional self-resetting energy-dissipating seismic isolation bearing as described in claim 1, characterized in that: The transmission device (32) includes four transverse cylinders (23), each corresponding to a third groove (801). The transverse cylinders (23) are welded to the top surface of the third base plate (8). Several perforated circular plates (231) are provided inside the transverse cylinders (23). A sleeve rod (22) is connected to the transverse cylinder (23). Several rings (24) are threaded to the outside of the sleeve rod (22). The other end of the sleeve rod (22) is connected to... There is a slider (21), which is slidably connected to the third groove (801). The other side of the slider (21) is connected to a guide rail (19). A third reset spring (20) is sleeved on the outside of the guide rail (19). One end of the third reset spring (20) is fixedly connected to the slider (21), and the other end of the third reset spring (20) is fixedly connected to the guide rail (19). The inner end of the guide rail (19) is fixedly connected to the third base plate (8). The transverse cylinder (23) is filled with a viscous medium.

3. A three-dimensional self-resetting energy-dissipating seismic isolation bearing as described in claim 2, characterized in that: The top surface of the slider (21) is provided with a first connecting rod (25), the right end of the first connecting rod (25) is provided with a second connecting rod (26), the middle part of the second connecting rod (26) is fixed with a third connecting rod (27), and the right end of the third connecting rod (27) is provided with a fourth connecting rod (28).

4. A three-dimensional self-resetting energy-dissipating seismic isolation bearing as described in claim 3, characterized in that: The two ends of the first link (25) are rotatably connected to the slider (21) and the second link (26) respectively. The right end of the second link (26) is rotatably connected to the inner end of the guide rail (19). The right end of the third link (27) is rotatably connected to the fourth link (28). The right end of the fourth link (28) is rotatably connected to the plug rod (16).

5. A three-dimensional self-resetting energy-dissipating seismic isolation bearing as described in claim 1, characterized in that: Two symmetrical first grooves (101) are provided on the top surface of the first base plate (1). The first groove (101) is a T-shaped groove. One end of the first groove (101) is a through-open structure. The bottom of the second base plate (2) is connected to the first base plate (1) by setting a groove plate that is compatible with the first groove (101). The through end of the first groove (101) is sealed and closed by a sealing block (3) and a cover plate (4) respectively. The first groove (101) is filled with a viscous medium.

6. A three-dimensional self-resetting energy-dissipating seismic isolation bearing as described in claim 1, characterized in that: Two symmetrical second grooves (201) are provided on the top surface of the second base plate (2). One end of the second groove (201) is a through-open structure. The three first conduits (5) on the left side of the second base plate (2) are symmetrically arranged with the three first conduits (5) on the right side. The inner end of each first conduit (5) is inserted into the second base plate (2) through a reserved hole opened in the side wall of the second base plate (2). The through end of the second groove (201) is closed by setting a T-shaped block (9).

7. A three-dimensional self-resetting energy-dissipating seismic isolation bearing as described in claim 6, characterized in that: The second groove (201) is arranged perpendicular to the first groove (101).

8. A three-dimensional self-resetting energy-dissipating seismic isolation bearing as described in claim 1, characterized in that: The two second conduits (10) at the front end of the third base plate (8) are symmetrically arranged with the two second conduits (10) at the rear end. The inner end of each second conduit (10) is inserted into the third base plate (8) through a reserved hole opened at the end of the third base plate (8). The two second blocks (12) are flush with the ends of the first base plate (1) and the second base plate (2), respectively.

9. A three-dimensional self-resetting energy-dissipating seismic isolation bearing as described in claim 1, characterized in that: The bottom surface of the top plate (30) is welded to the top surface of the column rod (14) and the support rod (17), respectively.

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