Seismic isolation bearing provided with a high viscoelastic asphalt damper

Abstract

The utility model relates to a kind of shock insulation support of setting high viscoelastic asphalt damper, comprising: lower support;Multiple high viscoelastic asphalt damping plates are located on lower support, and are arranged along circumference interval;Sliding block is located in lower support, and sliding slot is equipped with corresponding high viscoelastic asphalt damping plate, sliding slot is left with the clearance for high viscoelastic asphalt damping plate movement in length direction and width direction;Plate spring is located between the side wall corresponding to sliding block and lower support, one side is attached with sliding block and is connected by bolt, the other side forms support leg, and support leg is attached on the side wall corresponding to lower support.The utility model uses high viscoelastic asphalt damping strip to replace the lead core on the existing shock insulation support, solves the problems of temperature influence and lead pollution existing in lead core.The high viscoelastic asphalt damping strip has high damping ratio, high shock absorption efficiency, low temperature sensitivity, can cover most underground space and building environment, and has strong adaptability.

Description

Technical Field

[0001] This utility model relates to the field of seismic isolation technology, and specifically to a seismic isolation bearing equipped with a high viscoelastic asphalt damper. Background Technology

[0002] Seismic isolation technology is a superior earthquake-resistant technique. It involves placing a seismic isolation layer between the structure and the foundation. This layer decouples the superstructure from ground motion, "softening" the connection between the ground and the superstructure by using a low-stiffness isolation layer. This reduces the stiffness of the superstructure, lengthens its period, and thus reduces its seismic response. Sliding friction seismic isolation bearings are less dependent on earthquake frequency, do not resonate, and have wider applicability. They are frequently used in building and bridge structures to reduce seismic response.

[0003] The applicant has a prior Chinese patent (authorization announcement number CN210483191U, utility model name: a seismic isolation bearing) that uses a lead core in the horizontal direction. During use, the bearing base plate and the lead core work together to absorb horizontal vibration forces, achieving a seismic isolation effect. However, the lead core used in the aforementioned seismic isolation bearing has drawbacks such as increased yield strength at low temperatures, decreased energy dissipation capacity, and easy softening and accelerated fatigue at high temperatures. Furthermore, the lead core also poses a risk of lead contamination. Utility Model Content

[0004] The purpose of this invention is to overcome the defects of the prior art and provide a seismic isolation bearing with a high viscoelastic asphalt damper. This solves the problems of existing seismic isolation bearings using lead cores to absorb vibrations, such as increased yield force at low temperatures, decreased energy dissipation capacity, easy softening at high temperatures, accelerated fatigue, and the risk of lead contamination.

[0005] The technical solution to achieve the above objectives is:

[0006] This utility model provides a seismic isolation bearing with a high viscoelastic asphalt damper, comprising:

[0007] Lower support;

[0008] Multiple high viscoelastic asphalt damping plates are provided on the lower support, and the high viscoelastic asphalt damping plates are spaced apart along the circumference;

[0009] A slider is provided in the lower support, and the slider is provided with a groove corresponding to the high viscoelastic asphalt damping plate. The groove has gaps in both the length and width directions for the high viscoelastic asphalt damping plate to move.

[0010] A leaf spring is disposed between the slider and the side wall corresponding to the lower support. One side of the leaf spring is attached to the slider and connected by bolts, and the other side of the leaf spring forms a support foot, which is attached to the side wall corresponding to the lower support.

[0011] A further improvement of the seismic isolation bearing with a high viscoelastic asphalt damper in this invention is that the leaf spring is positioned corresponding to the high viscoelastic asphalt damping plate and located above the high viscoelastic asphalt damping plate.

[0012] A further improvement of the seismic isolation bearing with a high viscoelastic asphalt damper of this utility model is that the top of the slider is provided with an installation groove.

[0013] The seismic isolation bearing also includes an upper support disposed in the mounting groove, and a spherical crown plate is disposed between the upper support and the bottom of the mounting groove.

[0014] A further improvement of the seismic isolation bearing with a high viscoelastic asphalt damper of this utility model is that the inner wall of the mounting groove is provided with a protrusion extending inward.

[0015] The bottom of the upper support is provided with a stop portion located below the protrusion.

[0016] A further improvement of the seismic isolation bearing with a high viscoelastic asphalt damper of this utility model is that the top of the slider is provided with an installation groove.

[0017] The seismic isolation bearing also includes an upper support, which is disposed in the mounting groove and a disc spring is provided between the upper support and the bottom of the mounting groove.

[0018] A further improvement of this utility model is that the seismic isolation bearing with a high viscoelastic asphalt damper is that the upper bearing is provided with multiple guide columns arranged vertically.

[0019] A guide sleeve is provided in the mounting groove of the slider corresponding to the guide post;

[0020] The guide post is inserted into the guide sleeve and can slide up and down relative to the guide sleeve.

[0021] A further improvement of the seismic isolation bearing with a high viscoelastic asphalt damper in this utility model is that a buffer spring is provided inside the guide sleeve, and the two ends of the buffer spring abut against the bottom of the guide post and the mounting groove, respectively.

[0022] A further improvement of the seismic isolation bearing with a high viscoelastic asphalt damper of this utility model is that a limiting plate is provided at the bottom of the guide column.

[0023] The top of the guide sleeve is provided with an anti-detachment ring plate corresponding to the limiting plate.

[0024] A further improvement of the seismic isolation bearing with a high viscoelastic asphalt damper of this utility model is that a high viscoelastic asphalt damping cylinder is provided between the disc spring and the bottom of the mounting groove.

[0025] A further improvement of the seismic isolation bearing with a high viscoelastic asphalt damper of this utility model is that the side wall of the lower bearing is provided with a ring plate, and the end of the ring plate is located close to the outer surface of the slider.

[0026] The outer surface of the slider is provided with a stepped surface corresponding to the ring plate. The horizontal surface of the stepped surface is flush with the upper surface of the ring plate, and the vertical surface of the stepped surface is opposite to the end face of the ring plate.

[0027] The bottom portion of the slider is located below the ring plate.

[0028] The beneficial effects of this utility model of a seismic isolation bearing with a high viscoelastic asphalt damper are as follows:

[0029] This invention replaces the lead core in existing seismic isolation bearings with a high-viscoelastic asphalt damping strip, solving the defects of lead cores such as increased yield strength at low temperatures, decreased energy dissipation capacity, easy softening at high temperatures, and accelerated fatigue, as well as addressing the risk of lead pollution. This high-viscoelastic asphalt damping strip has a high damping ratio, high vibration reduction efficiency, low temperature sensitivity, and can cover most underground spaces and building environments, exhibiting strong adaptability. It contains no heavy metal components, aligning with green development trends. Furthermore, this high-viscoelastic asphalt damping strip exhibits high fatigue performance and recovery rate, maintaining stable performance under repeated loading and minimizing stiffness degradation. Moreover, asphalt damping is a distributed viscoelastic energy dissipation method with no abrupt stiffness plateau, maintaining smooth energy dissipation characteristics even under large deformations.

[0030] The seismic isolation bearing of this invention uses a high-viscoelastic asphalt damping cylinder to replace the rubber damping in the existing seismic isolation bearing, which solves the problem that rubber damping is prone to hardening at low temperatures and softening at high temperatures, causing its damping performance to change significantly with temperature. Attached Figure Description

[0031] Figure 1 A cross-sectional view of the first embodiment of the seismic isolation bearing with a high viscoelastic asphalt damper according to this utility model.

[0032] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0033] Figure 3 This is a top view of the lower support, slider, and leaf spring connection of the first embodiment of the seismic isolation bearing with a high viscoelastic asphalt damper according to the present invention.

[0034] Figure 4A cross-sectional view of a second embodiment of the seismic isolation bearing with a high viscoelastic asphalt damper according to this utility model.

[0035] Figure 5 This is a schematic diagram of the lower support and the high viscoelastic asphalt damping plate installed on it in the third embodiment of the seismic isolation bearing with a high viscoelastic asphalt damper according to the present invention.

[0036] Figure 6 A cross-sectional view of the third embodiment of the seismic isolation bearing with a high viscoelastic asphalt damper according to this utility model. Detailed Implementation

[0037] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0038] See Figure 1 This invention provides a seismic isolation bearing with a high-viscoelastic asphalt damper, addressing the shortcomings of lead-core seismic isolation bearings, such as increased yield strength at low temperatures, decreased energy dissipation capacity, and easy softening and accelerated fatigue at high temperatures, as well as the risk of lead pollution. The seismic isolation bearing of this invention employs a high-viscosity, high-elasticity modified asphalt damping strip with a high loss factor, high viscosity, and low temperature sensitivity. This strip is combined with a leaf spring and positioned around the perimeter of the seismic isolation bearing. This high-viscoelastic asphalt damping strip has a high damping ratio and high vibration reduction efficiency, and it contains no heavy metal components, aligning with green development trends. The seismic isolation bearing with a high-viscoelastic asphalt damper of this invention will be described below with reference to the accompanying drawings.

[0039] See Figure 1 This is a cross-sectional view of the first embodiment of the seismic isolation bearing with a high viscoelastic asphalt damper of this utility model. The following is in conjunction with... Figure 1 This invention describes the seismic isolation bearing equipped with a high-viscoelastic asphalt damper.

[0040] like Figure 1 As shown, the seismic isolation bearing of this utility model with a high viscoelastic asphalt damper includes a lower support 21, a high viscoelastic asphalt damping plate 26, a slider 22, and a leaf spring 25, combined with... Figure 2 As shown, multiple high-viscoelastic asphalt damping plates 26 are disposed on the lower support 21. Each high-viscoelastic asphalt damping plate 26 is located on the upper surface of the base plate of the lower support 21, and the high-viscoelastic asphalt damping plates 26 are spaced apart along the circumference. A slider 22 is disposed within the lower support 21, and the slider 22 has a groove 223 corresponding to the high-viscoelastic asphalt damping strip 26. The groove 223 has gaps in both the length and width directions for the high-viscoelastic asphalt damping strip 26 to move. Figure 3As shown, the leaf spring 25 is disposed between the slider 22 and the corresponding side wall of the lower support 21. One side of the leaf spring 25 is attached to the slider 22 and connected by bolt 31. The other side of the leaf spring 25 forms a support leg 251, which is attached to the corresponding side wall of the lower support 21.

[0041] In practical use, when the seismic isolation bearing is under certain vibration conditions, the slider 22 of the seismic isolation bearing begins to slide under the action of vibration force, sliding along the length direction of the high viscoelastic asphalt damping plate 26. Since the groove 223 has gaps in both the length and width directions for the movement of the high viscoelastic asphalt damping plate 26, the slider 22 can slide along the high viscoelastic asphalt damping plate 26 to absorb the vibration force in the horizontal direction. The leaf spring 25 is set between the slider 22 and the lower support 21. The leaf spring 25 enables the seismic isolation bearing to have a certain self-resetting function after being subjected to vibration force, so that the seismic isolation bearing has controllable displacement when the vibration force is large. The main function of the leaf spring 25 is to provide support and rebound, and the main function of the high viscoelastic asphalt damping plate 26 is to provide damping and absorb vibration energy. The combination of the leaf spring 25 and the high viscoelastic asphalt damping plate 26 forms a seismic isolation bearing that can effectively support and quickly attenuate vibration.

[0042] Furthermore, such as Figure 3 As shown, the outer contour of the lower support 21 is square and has four side walls. Four high viscoelastic asphalt damping plates 26 are provided. The high viscoelastic asphalt damping plates 26 are provided on the lower surface of the bottom plate of the lower support 21 and are arranged perpendicularly to the corresponding side walls. In this way, the four high viscoelastic asphalt damping plates 26 can provide the slider 22 with the function of absorbing horizontal vibration force.

[0043] Furthermore, leaf springs 25 are positioned above and corresponding to the high viscoelastic asphalt damping plate 26. Four leaf springs 25 are also provided, one on each side wall. Each leaf spring 25 comprises multiple overlapping spring steel plates of unequal length and equal width. The longest spring steel plate has legs 251 at both ends, and the shortest spring steel plate is in contact with the outer surface of the slider 22. Bolts 31 are then inserted through the middle of each spring steel plate to connect them to the slider 22. Thus, when the slider 22 slides horizontally, the corresponding leaf spring 25 deforms, generating a restoring force to return the slider 22 to its original position.

[0044] Furthermore, the lower support 21 includes a base plate and baffles erected around the base plate. The slider 22 is placed on the base plate and located inside the baffles. A clearance is left between the side of the slider 22 and the baffles to allow the slider 22 to slide. A limiting protrusion can also be provided on the outside of the slider 22 to allow a clearance between the limiting protrusion and the corresponding baffle.

[0045] In one specific embodiment of this utility model, the side wall of the lower support 21 is provided with an annular plate 211, the end of which is located near the outer surface of the slider 22; the outer surface of the slider 22 is provided with a stepped surface corresponding to the annular plate 211, the horizontal surface 221 of which is flush with the upper surface of the annular plate 211, and the vertical surface 222 of which is opposite to the end face of the annular plate 211; a portion of the bottom of the slider 22 is located below the annular plate 211. The annular plate 211 restricts the vertical position of the slider 22 relative to the lower support 21, preventing the slider 22 from detaching from the lower support 21.

[0046] In one specific embodiment of this utility model, such as Figure 1 and Figure 3 As shown, the top of the slider 22 is provided with a vertically oriented mounting groove located at the center of the top surface of the slider 22. The vibration isolation support also includes an upper support 24 disposed within the mounting groove. A spherical crown plate 23 is provided between the upper support 24 and the bottom of the mounting groove. A spherical sliding plate can be disposed between the spherical crown plate 23 and the lower support 24. A stainless steel plate and a flat sliding plate can be disposed between the spherical crown plate 23 and the bottom of the mounting groove. The spherical and flat sliding plates can be made of polytetrafluoroethylene (PTFE). This allows for frictional sliding between the upper support 24 and the slider 22. A gap is left between the outer periphery of the upper support 24 and the groove wall of the mounting groove to allow the upper support 24 to rotate to a certain extent relative to the mounting groove of the slider 22, thereby achieving vibration isolation.

[0047] Furthermore, the inner wall of the mounting groove is provided with an inwardly protruding protrusion, and the bottom of the upper support 24 is provided with a stop portion located below the protrusion. The protrusion can limit the vertical displacement of the stop portion, thereby preventing the upper support 24 from detaching from the mounting groove. The protrusion is preferably annular.

[0048] In one specific embodiment of this utility model, the high-viscoelastic asphalt damping plate 26 can be covered by a thin sheet of iron. This thin sheet of iron protects the high-viscoelastic asphalt damping plate 26. To prevent the thin sheet of iron from affecting the shear deformation of the high-viscoelastic asphalt damping plate 26, the thin sheet of iron is connected to the high-viscoelastic asphalt damping plate 26 using intermittent adhesive application, leaving more than 90% of the area unbonded. Furthermore, notches can be spaced out on the thin sheet of iron to ensure that it can be wrinkled and bent. Alternatively, the thin sheet of iron can be U-shaped and fitted onto the high-viscoelastic asphalt damping plate 26, allowing the top surface of the high-viscoelastic asphalt damping plate 26 to be exposed and in contact with the slider 22.

[0049] like Figure 4As shown, in the second embodiment, based on the first embodiment, a mounting base 27, a connector 32, a steel spring 28, and a high-viscoelastic asphalt damping cylinder 29 are further provided. The bottom of the mounting base 27 is connected to the top of the upper support 24 through multiple connectors 32. The connectors 32 pass through the top of the upper support 24 and the bottom plate of the mounting base 27, and are then connected by threaded nuts to achieve the connection between the mounting base 27 and the upper support 24. A steel spring 28 is fitted on the connector 32, which is supported between the mounting base 27 and the upper support 24. The high-viscoelastic asphalt damping cylinder 29 is also supported between the mounting base 27 and the upper support 24. The top and bottom of the high-viscoelastic asphalt damping cylinder 29 form connecting discs, which can be fixedly connected to the mounting base 27 and the upper support 24 by bolts. The high-viscoelastic asphalt damping cylinder 29 and the steel spring 28 are used to absorb the vertical vibration force of the mounting base 27. The connector 32 is preferably a screw, but it can also be a bolt or other connecting components.

[0050] The second embodiment of this utility model adds a vertical vibration isolation function based on the first embodiment.

[0051] like Figure 5 and Figure 6 As shown, in the third embodiment, the lower support 21 is a square frame with a bottom plate and an opening at the top. The high viscoelastic asphalt damping plate 26 is a long strip, disposed on the bottom plate of the square frame, and vertically connected to the side frame plate corresponding to the lower support 21.

[0052] The slider 22 is mounted on the base plate. The top of the slider 22 is provided with a mounting groove. The vibration isolation support also includes an upper support 24, which is located in the mounting groove. A disc spring 34 is provided between the upper support 24 and the bottom of the mounting groove. The upper support 24 is supported on the bottom of the mounting groove by the disc spring 34, which is used to absorb vertical vibration force.

[0053] Furthermore, the upper support 24 is provided with multiple vertically arranged guide posts 241. A guide sleeve 32 is provided in the mounting groove of the slider 22 corresponding to the guide post 241. The guide post 241 is inserted into the corresponding guide sleeve 32, and the guide post 241 can slide up and down relative to the guide sleeve 32. Through the arrangement of the guide post 241 and guide sleeve 32, the vertical sliding of the upper support 24 can be guided and limited, and the movement direction of the disc spring 34 can also be guided and limited. The guide posts 241 and guide sleeves 32 are arranged at intervals along the circumference, and preferably four guide posts 241 and guide sleeves 32 are provided.

[0054] Furthermore, a buffer spring 33 is provided inside the guide sleeve 32, with its two ends abutting against the guide post 241 and the bottom of the mounting groove, respectively. The buffer spring 33 can further absorb vertical vibration and reduce vertical vibration force.

[0055] Furthermore, a limiting plate 242 is provided at the bottom of the guide post 241, and an anti-detachment ring plate is provided at the top of the guide sleeve 32 corresponding to the limiting plate 242. The anti-detachment ring plate can block the limiting plate 242 to prevent the guide post 241 from coming out of the guide sleeve 32.

[0056] Furthermore, a high-viscoelastic asphalt damping cylinder 29 is provided between the disc spring 34 and the bottom of the mounting groove. The top and bottom of the high-viscoelastic asphalt damping cylinder 29 have connecting plates. The bottom connecting plate is connected to the slider 22 (the bottom of the mounting groove) via bolts or other connectors, and the top connecting plate is connected to the disc spring 34 via bolts or other connectors. A connecting plate for connection can be provided at the bottom of the disc spring 34. The combination of the high-viscoelastic asphalt damping cylinder 29 and the disc spring 34 can further reduce vertical vibration force and increase the seismic isolation effect of the seismic isolation bearing.

[0057] The high viscoelastic asphalt damping cylinder 29 is cylindrical and hollow inside. Connecting discs are integrally formed at the top and bottom of the high viscoelastic asphalt damping cylinder 29 for installing the high viscoelastic asphalt damping cylinder 29.

[0058] In the third embodiment, the slider 22 is also provided with a groove corresponding to the high viscoelastic asphalt damping plate 26, and a leaf spring 25 is also provided between the slider 22 and the side frame plate of the lower support 21. The structure of the groove and the leaf spring 25 is the same as that of the groove 223 and the leaf spring 25 in the first embodiment.

[0059] A blocking plate 212 is provided on the side frame plate of the lower support 21 to prevent the slider 22 from falling out in the vertical direction. The blocking plate 212 can be provided on the four side frame plates or on two opposite side frame plates.

[0060] The stiffness of the leaf spring 25, steel spring 28, and buffer spring 33 in this utility model can be determined according to the vertical load of the support design to ensure that the support has good mobility and self-resetting ability after earthquake. It is generally recommended to be greater than 8kN / mm for building structures.

[0061] In one specific embodiment of this utility model, the high viscoelastic asphalt damping plate 26 and the high viscoelastic asphalt damping cylinder 29 of this utility model are formed of high viscoelastic modified asphalt, which includes the following materials by weight: 100 parts by weight of base asphalt, 3.0 parts by weight of compatibilizer, 5.0 parts by weight of PE, 7.0 parts by weight of tackifier, 4.0 parts by weight of SBR, 6.0 parts by weight of SBS, 2.5 parts by weight of plasticizer and 0.03 parts by weight of stabilizer.

[0062] In a preferred embodiment, the compatibilizer is an interface agent. Specifically, the interface agent is an aromatic solvent oil.

[0063] In a preferred embodiment, the tackifier is coumarone resin.

[0064] In a preferred embodiment, the stabilizer is a composite stabilizer. In this embodiment, the composite stabilizer is WD-5 type composite vulcanization stabilizer from Shandong Haosheng Energy Co., Ltd.

[0065] Furthermore, the high-viscosity and high-elasticity modified asphalt exhibits the following characteristics at different temperatures: 1.5–20 MPa storage shear modulus, 1.5–20 MPa loss shear modulus, and 0.8–1.1 at a temperature range of 5–15℃ and a frequency range of 1–10Hz; 0.2–5.0 MPa storage shear modulus, 0.2–5.0 MPa loss shear modulus, and 1.0–1.3 loss factor at a temperature range of 15–25℃ and a frequency range of 1–10Hz; and 0.08–0.9 MPa storage shear modulus, 0.09–1.1 MPa loss shear modulus, and 1.1–1.3 loss factor at a temperature range of 25–35℃ and a frequency range of 1–10Hz.

[0066] The high-viscosity and high-elasticity modified asphalt has a viscosity-toughness of not less than 32.0 N·m and a toughness of not less than 24.0 N·m at 25°C.

[0067] This invention uses high-viscosity, high-elasticity modified asphalt, which is not the high-viscosity modified asphalt specified in standards such as the "Technical Specification for Design and Construction of Drainage Asphalt Pavement" (JTG / T 3350–03–2020), nor the high-elasticity modified asphalt specified in standards such as the "Technical Standard for Construction of Asphalt Concrete Bridge Deck in Urban Bridges" (CJJ / T279–2018). The high-viscosity, high-elasticity modified asphalt of this invention has high Brinell rotational viscosity, high softening point, and high viscosity-toughness and toughness. It also features high penetration, high penetration index (low temperature sensitivity), and high ductility, exhibiting excellent high-temperature and low-temperature performance, and maintaining good physical and mechanical properties over a wide temperature range.

[0068] In operation, the seismic isolation bearing of the third embodiment of this utility model is placed in the seismic isolation layer between the building structure, bridge structure and foundation. When vibration occurs, the bearing is subjected to vibration force and slides. Under the action of vibration force, the slider 22 begins to slide. The slider 22 slides along the direction of the high viscoelastic asphalt damping strip 26 to absorb horizontal vibration force. During a large earthquake, the leaf spring 25 controls the displacement distance of the bearing, allowing it to self-reset after the vibration ends. The upper bearing 24 displaces along the axial direction of the disc spring 34 to absorb vertical vibration force. The disc spring 34 and the high viscoelastic asphalt damping cylinder 29 together absorb vertical vibration force. The sliding cooperation of the guide post 241 and the guide sleeve 32 further absorbs vertical vibration energy, providing a better isolation effect for vertical vibration.

[0069] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A seismic isolation bearing equipped with a high viscoelastic asphalt damper, characterized in that, include: Lower support; Multiple high viscoelastic asphalt damping plates are provided on the lower support, and the high viscoelastic asphalt damping plates are spaced apart along the circumference; A slider is provided in the lower support, and the slider is provided with a groove corresponding to the high viscoelastic asphalt damping plate. The groove has gaps in both the length and width directions for the high viscoelastic asphalt damping plate to move. A leaf spring is disposed between the slider and the side wall corresponding to the lower support. One side of the leaf spring is attached to the slider and connected by bolts, and the other side of the leaf spring forms a support foot, which is attached to the side wall corresponding to the lower support.

2. The seismic isolation bearing with a high viscoelastic asphalt damper as described in claim 1, characterized in that, The leaf spring is positioned corresponding to the high viscoelastic asphalt damping plate and is located above the high viscoelastic asphalt damping plate.

3. The seismic isolation bearing with a high viscoelastic asphalt damper as described in claim 1, characterized in that, The top of the slider is provided with a mounting groove; The seismic isolation bearing also includes an upper support disposed in the mounting groove, and a spherical crown plate is disposed between the upper support and the bottom of the mounting groove.

4. The seismic isolation bearing with a high viscoelastic asphalt damper as described in claim 3, characterized in that, The inner wall of the mounting groove is provided with protrusions that extend inward; The bottom of the upper support is provided with a stop portion located below the protrusion.

5. The seismic isolation bearing with a high viscoelastic asphalt damper as described in claim 1, characterized in that, The top of the slider is provided with a mounting groove; The seismic isolation bearing also includes an upper support, which is disposed in the mounting groove and a disc spring is provided between the upper support and the bottom of the mounting groove.

6. The seismic isolation bearing with a high viscoelastic asphalt damper as described in claim 5, characterized in that, The upper support is provided with multiple guide posts arranged vertically; A guide sleeve is provided in the mounting groove of the slider corresponding to the guide post; The guide post is inserted into the guide sleeve and can slide up and down relative to the guide sleeve.

7. The seismic isolation bearing with a high viscoelastic asphalt damper as described in claim 6, characterized in that, A buffer spring is provided inside the guide sleeve, and the two ends of the buffer spring abut against the bottom of the guide post and the mounting groove, respectively.

8. The seismic isolation bearing with a high viscoelastic asphalt damper as described in claim 6, characterized in that, The bottom of the guide post is provided with a limiting plate; The top of the guide sleeve is provided with an anti-detachment ring plate corresponding to the limiting plate.

9. The seismic isolation bearing with a high viscoelastic asphalt damper as described in claim 5, characterized in that, A high viscoelastic asphalt damping cylinder is provided between the disc spring and the bottom of the mounting groove.

10. The seismic isolation bearing with a high viscoelastic asphalt damper as described in claim 1, characterized in that, The side wall of the lower support is provided with a ring plate, and the end of the ring plate is disposed close to the outer surface of the slider; The outer surface of the slider is provided with a stepped surface corresponding to the ring plate. The horizontal surface of the stepped surface is flush with the upper surface of the ring plate, and the vertical surface of the stepped surface is opposite to the end face of the ring plate. The bottom portion of the slider is located below the ring plate.

Images