Double-elastic anti-detachment type seismic isolation bearing

Abstract

A dual-elastic anti-delamination type seismic isolation bearing is provided, comprising an upper connecting plate, a lower connecting plate, and an anti-delamination damping body located between the upper and lower connecting plates. The anti-delamination damping body is located inside a high-hardness rubber body, and the upper and lower end faces of the high-hardness rubber body are respectively fixedly connected to the upper and lower connecting plates. This invention optimizes the internal structure of the seismic isolation bearing by adopting a structure in which the firmly bonded anti-delamination damping body and the high-hardness rubber body are vulcanized together. This prevents delamination while improving the overall vertical bearing capacity of the seismic isolation bearing. The high-hardness rubber body synergistically dissipates energy from the anti-delamination damping body, simplifying the damping energy dissipation elements required in the bearing. The outer high-hardness rubber body acts as a corrosion barrier, avoiding the risk of interlayer delamination caused by oxidation of the anti-delamination damping body.

Description

Technical Field

[0001] This utility model belongs to the field of engineering vibration reduction technology, specifically relating to a double elastic anti-detachment type seismic isolation bearing. Background Technology

[0002] Earthquake damage to buildings manifests primarily as the combined effects of vertical turbulence from P-waves, horizontal shearing from S-waves, and torsional forces from surface waves. The superposition of these three factors easily triggers resonance and progressive collapse. While traditional rubber bearings possess elasticity and deformation capacity, they suffer from drawbacks such as low vertical load-bearing capacity, poor durability, and insufficient damping, resulting in high maintenance costs. Although current vulcanized polyurethane elastic layers have higher strength and elongation than rubber bearings, the planar surface between the steel plate and polyurethane leads to insufficient bonding strength during actual use, resulting in reduced vertical load-bearing capacity. Furthermore, delamination between the steel plate and polyurethane is prone to occur, causing the seismic isolation bearing to fail. Therefore, improvements are necessary to address these issues. Utility Model Content

[0003] The technical problem solved by this utility model is to provide a double-elastic anti-delamination type seismic isolation bearing. By optimizing the internal structure of the seismic isolation bearing, a structure is adopted in which the anti-delamination type damping body and the high-hardness rubber body are vulcanized together to prevent delamination and improve the overall vertical bearing capacity of the seismic isolation bearing. The high-hardness rubber body helps to dissipate energy for the anti-delamination type damping body, simplifying the damping energy dissipation elements required in the bearing. The outer high-hardness rubber body can serve as an anti-corrosion barrier to avoid the risk of interlayer delamination caused by oxidation of the anti-delamination type damping body.

[0004] The technical solution adopted in this utility model is: a double elastic anti-detachment type seismic isolation bearing, including an upper connecting plate, a lower connecting plate, and an anti-detachment type damping body located between the upper connecting plate and the lower connecting plate. The anti-detachment type damping body is located inside a high-hardness rubber body, and the upper and lower end faces of the high-hardness rubber body are respectively fixedly connected to the upper connecting plate and the lower connecting plate.

[0005] The anti-delamination type shock absorber body includes multiple vertically distributed steel plates and a polyurethane elastic layer located between two adjacent steel plates. Multiple alternating grooves and protrusions are evenly distributed on the upper and lower surfaces of the steel plates. The multiple layers of steel plates and polyurethane elastic layers are alternately arranged and vulcanized into one piece. The upper end surface of the polyurethane elastic layer is adapted to and tightly attached to the bottom surface of the steel plate above it, and the lower end surface of the polyurethane elastic layer is adapted to and tightly attached to the top surface of the polyurethane elastic layer below it, forming the anti-delamination type shock absorber body.

[0006] Furthermore, the thickness ratio of the steel plate to the polyurethane elastic layer ranges from 1 to 1.5: 5 to 10.

[0007] Furthermore, the high-hardness rubber body is vulcanized into one with its internal anti-detachment type shock-absorbing main body.

[0008] Furthermore, the grooves and bosses on the uppermost steel plate are adapted to and tightly fitted to the top surface of the high-hardness rubber inner cavity, and the grooves and bosses on the lower end face of the lowermost steel plate are adapted to and tightly fitted to the bottom surface of the high-hardness rubber inner cavity.

[0009] Furthermore, the high-hardness rubber body is made by blending and vulcanizing natural rubber and styrene-butadiene rubber.

[0010] Furthermore, both the upper connecting plate and the lower connecting plate are steel plates, and the upper and lower ends of the high-hardness rubber body are glued and fixed to the upper connecting plate and the lower connecting plate, respectively.

[0011] Advantages of this utility model compared to the prior art:

[0012] 1. This technical solution optimizes the internal structure of the seismic isolation bearing by designing multiple alternating grooves and protrusions on the upper and lower surfaces of the steel plate. The multiple vertically distributed steel plates and the polyurethane elastic layer located between two adjacent steel plates are vulcanized into one to form an anti-delamination type damping body. This effectively disperses the stress of the anti-delamination type damping body under vertical load and horizontal shear, reduces local stress concentration, and the design of grooves and protrusions effectively increases the contact surface with the polyurethane elastic layer, making the bond between the polyurethane elastic layer and the steel plate tighter and stronger, thus avoiding the problem of seismic isolation bearing failure caused by delamination between the steel plate and the polyurethane elastic layer.

[0013] 2. This technical solution adopts a structure in which the anti-delamination type damping body and the high-hardness rubber body are vulcanized into one, which improves the overall vertical bearing capacity of the seismic isolation bearing. The high-hardness rubber body helps the anti-delamination type damping body to dissipate energy, simplifying the damping energy dissipation components required in the bearing. The outer high-hardness rubber body can serve as an anti-corrosion barrier to avoid the risk of interlayer delamination caused by steel plate oxidation.

[0014] 3. The inner layer of this technical solution uses a polyurethane elastic layer with low stiffness and a steel plate laminate structure with grooves and protrusions to improve the damping performance of the support and play an effective role in seismic isolation and vibration reduction.

[0015] 4. This technical solution has a simple structure, novel design, good practicality, and improves the wear resistance of seismic isolation bearings, thus having high application value. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the internal structure of this utility model;

[0017] Figure 2 This is the main body for shock absorption in this utility model. Detailed Implementation

[0018] The following will refer to the embodiments of this utility model. Figure 1-2 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] It should be noted that, unless otherwise stated herein, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In this document, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0021] Double-elastic anti-detachment type seismic isolation bearing, such as Figure 1 As shown, it includes an upper connecting plate 1, a lower connecting plate 5, and an anti-delamination type shock absorber body located between the upper connecting plate 1 and the lower connecting plate 5. The anti-delamination type shock absorber body is located inside a high-hardness rubber body 2, and the upper and lower end faces of the high-hardness rubber body 2 are respectively fixedly connected to the upper connecting plate 1 and the lower connecting plate 5 as a whole; Figure 2 As shown, the specific structure of the anti-delamination type damping body is as follows: The anti-delamination type damping body includes multiple vertically distributed steel plates 4 and a polyurethane elastic layer 3 located between two adjacent steel plates 4. Multiple alternating grooves 4-1 and protrusions 4-2 are evenly distributed on the upper and lower surfaces of the steel plates 4. The multiple layers of steel plates 4 and polyurethane elastic layers 3 are alternately arranged vertically and vulcanized into one piece. The upper end surface of the polyurethane elastic layer 3 is adapted to and tightly attached to the bottom surface of the steel plate 4 above it, and the lower end surface of the polyurethane elastic layer 3 is adapted to and tightly attached to the top surface of the polyurethane elastic layer 3 below it, forming the anti-delamination type damping body.

[0022] In the above structure, by optimizing the internal structure of the seismic isolation bearing, multiple alternating grooves 4-1 and protrusions 4-2 are designed on the upper and lower surfaces of the steel plate 4. These multiple vertically distributed steel plates 4 and the polyurethane elastic layer 3 located between adjacent steel plates 4 are vulcanized into a single unit to form an anti-delamination type damping body. This effectively disperses the stress of the anti-delamination type damping body under vertical load and horizontal shear, reducing local stress concentration. The design of the grooves 4-1 and protrusions 4-2 effectively increases the contact surface with the polyurethane elastic layer 3, ensuring a smoother connection between the polyurethane elastic layer 3 and the steel plate 4. The tighter bonding between the steel plate 4 and the polyurethane elastic layer 3 makes the bond stronger, avoiding the problem of seismic isolation bearing failure caused by delamination of the steel plate 4 and the polyurethane elastic layer 3. The inner layer uses a polyurethane elastic layer 3 with lower stiffness and a steel plate 4 with grooves 4-1 and protrusions 4-2 in a laminated structure, which improves the vertical bearing capacity, enhances the damping performance of the bearing, plays an effective role in seismic isolation and vibration reduction, has good durability, increases the contact bonding between the steel plate 4 and the polyurethane elastic layer 3, improves the bonding strength between the two, helps to disperse stress, reduce local stress concentration, enhance the stability of the entire seismic isolation bearing structure, and improve its service life.

[0023] The thickness ratio of the steel plate 4 to the polyurethane elastic layer 3 is in the range of 1 to 1.5: 5 to 10.

[0024] The high-hardness rubber body 2 is vulcanized with its internal anti-detachment type damping body. Specifically, the groove 4-1 and boss 4-2 on the uppermost steel plate 4 are adapted to and tightly fitted with the top surface of the inner cavity of the high-hardness rubber body 2, and the groove 4-1 and boss 4-2 on the lower end face of the lowermost steel plate 4 are adapted to and tightly fitted with the bottom surface of the inner cavity of the high-hardness rubber body 2. That is, the contact area between the steel plate 4 and the high-hardness rubber body 2 is increased, thereby improving the bonding strength between the two, which helps to disperse stress, thus ensuring the stability of the entire seismic isolation bearing structure and improving durability and service life.

[0025] The high-hardness rubber body 2 is made of natural rubber and styrene-butadiene rubber through co-vulcanization. It adopts a structure in which the anti-delamination type damping body and the high-hardness rubber body 2 are vulcanized into one, which improves the overall vertical bearing capacity of the seismic isolation bearing. The high-hardness rubber body 2 works together to dissipate energy for the anti-delamination type damping body, simplifying the damping energy dissipation elements required in the bearing. The outer high-hardness rubber body 2 can serve as an anti-corrosion barrier to avoid the risk of interlayer delamination caused by the oxidation of the steel plate 4.

[0026] Specifically, both the upper connecting plate 1 and the lower connecting plate 5 are steel plates, and the upper and lower ends of the high-hardness rubber body 2 are glued and fixed to the upper connecting plate 1 and the lower connecting plate 5, respectively.

[0027] This technical solution has a simple structure, novel design, and good practicality. It improves the wear resistance of seismic isolation bearings and has high application value.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A double-elastic anti-detachment type seismic isolation bearing, characterized in that: It includes an upper connecting plate (1), a lower connecting plate (5) and an anti-delamination type shock absorber body located between the upper connecting plate (1) and the lower connecting plate (5). The anti-delamination type shock absorber body is located inside a high-hardness rubber body (2), and the upper and lower end faces of the high-hardness rubber body (2) are fixedly connected to the upper connecting plate (1) and the lower connecting plate (5) respectively. The anti-detachment type shock absorber body includes multiple steel plates (4) distributed vertically and vertically and a polyurethane elastic layer (3) located between two adjacent steel plates (4). Multiple alternating grooves (4-1) and bosses (4-2) are evenly distributed on the upper and lower surfaces of the steel plates (4). The multiple layers of steel plates (4) and polyurethane elastic layers (3) are alternately arranged vertically and vulcanized into one.

2. The double-elastic anti-detachment type seismic isolation bearing according to claim 1, characterized in that: The upper surface of the polyurethane elastic layer (3) is adapted to and tightly attached to the bottom surface of the steel plate (4) above it, and the lower surface of the polyurethane elastic layer (3) is adapted to and tightly attached to the top surface of the polyurethane elastic layer (3) below it, forming a shock-absorbing body with anti-detachment layer.

3. The double-elastic anti-detachment type seismic isolation bearing according to claim 2, characterized in that: The thickness ratio of the steel plate (4) to the polyurethane elastic layer (3) is in the range of 1 to 1.5: 5 to 10.

4. The double-elastic anti-detachment type seismic isolation bearing according to claim 3, characterized in that: The high-hardness rubber body (2) is vulcanized together with its internal anti-detachment type shock-absorbing body.

5. The double-elastic anti-detachment type seismic isolation bearing according to claim 4, characterized in that: The groove (4-1) and boss (4-2) on the uppermost steel plate (4) are adapted to and tightly fitted to the top surface of the inner cavity of the high-hardness rubber body (2), and the groove (4-1) and boss (4-2) on the lower end face of the lowermost steel plate (4) are adapted to and tightly fitted to the bottom surface of the inner cavity of the high-hardness rubber body (2).

6. The double-elastic anti-detachment type seismic isolation bearing according to claim 1, characterized in that: The high-hardness rubber body (2) is made by blending and vulcanizing natural rubber and styrene-butadiene rubber.

7. The double-elastic anti-detachment type seismic isolation bearing according to any one of claims 1-6, characterized in that: Both the upper connecting plate (1) and the lower connecting plate (5) are steel plates, and the upper and lower ends of the high-hardness rubber body (2) are glued and fixed to the upper connecting plate (1) and the lower connecting plate (5) respectively.

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