Waveguide polyurethane laminated shock insulation support

Abstract

The waveguide polyurethane laminated shock insulation support comprises an upper connecting plate, a lower connecting plate and a shock absorption body arranged between the upper connecting plate and the lower connecting plate, the upper end face of the shock absorption body is fixed to the bottom face of the upper connecting plate through an upper pressure-bearing wear-resisting layer, and the lower end face of the shock absorption body is fixed to the upper end face of the lower connecting plate through a lower pressure-bearing wear-resisting layer; the damping main body comprises a plurality of multi-layer corrugated steel plates which are distributed up and down and polyurethane elastomers which wrap the multi-layer corrugated steel plates and are alternately vulcanized and tightly attached into a whole. The internal structure of the shock insulation support is optimized, energy is absorbed through waveform deformation during shear deformation, transverse expansion deformation of the polyurethane elastomer is limited under vertical load, the contact area with the polyurethane elastomer is increased, friction force is increased, the energy dissipation capacity is enhanced, and the service life of the shock insulation support is prolonged. The problem that a steel plate and polyurethane are separated or relatively slide due to insufficient binding force of a traditional shock insulation support is solved, the interlayer peeling strength is improved, and the vertical bearing capacity of the support is improved.

Description

Technical Field

[0001] This utility model belongs to the field of engineering vibration reduction technology, specifically relating to a waveguide polyurethane laminated 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 low vertical load-bearing capacity, poor durability, and insufficient damping, resulting in high maintenance costs. Although current cast polyurethane elastomers have higher strength and elongation than rubber bearings, the planar bonding surface between the steel plate and polyurethane leads to insufficient bonding strength during actual use, resulting in reduced vertical load-bearing capacity. When the bonding strength is insufficient, under vertical loads, the polyurethane and steel plate may separate or slide relative to each other, preventing the effective transfer of the vertical force originally shared by both. This causes the bearing's vertical load-bearing capacity to fail to meet design requirements, impacting the safety and reliability of the building. Therefore, improvements are necessary to address the issue of insufficient bonding strength between the steel plate and polyurethane. Utility Model Content

[0003] The technical problem solved by this utility model is to provide a waveguide polyurethane laminated seismic isolation bearing. By optimizing the internal structure of the seismic isolation bearing, a damping body is formed by alternating layers of polyurethane elastomer and corrugated steel plate through vulcanization. The corrugation of the steel plate is utilized, and the polyurethane elastomer fills the gaps between the corrugations. During shear deformation, energy is absorbed through the deformation of the corrugations. Under vertical loads, the lateral expansion deformation of the polyurethane elastomer is restricted, increasing the contact area with the polyurethane elastomer, increasing friction, and enhancing energy dissipation capacity. The tight bond between the polyurethane elastomer and the corrugated steel plate effectively transmits and disperses the vertical load, solving the problem of separation or relative sliding between the steel plate and polyurethane due to insufficient bonding force in traditional seismic isolation bearings. This improves the interlayer peel strength and enhances the vertical bearing capacity of the bearing.

[0004] The technical solution adopted in this utility model is: a waveguide polyurethane laminated vibration isolation bearing, including an upper connecting plate, a lower connecting plate, and a vibration damping body disposed between the upper connecting plate and the lower connecting plate. The upper end surface of the vibration damping body is fixed to the bottom surface of the upper connecting plate through an upper pressure-bearing wear-resistant layer, and the lower end surface of the vibration damping body is fixed to the upper end surface of the lower connecting plate through a lower pressure-bearing wear-resistant layer. The vibration damping body includes multiple multi-layer corrugated steel plates distributed vertically and vertically, and a polyurethane elastomer that wraps the multi-layer corrugated steel plates inside and alternately vulcanizes and tightly bonds them together.

[0005] The upper and lower pressure-bearing wear-resistant layers are both made of short-cut fiber modified polyurethane material.

[0006] Furthermore, the top and bottom surfaces of the polyurethane elastomer are integrally cast with the upper and lower pressure-bearing wear-resistant layers, respectively.

[0007] Furthermore, the ratio of the thickness of the corrugated steel plate to that of the polyurethane elastomer is in the range of 1 to 1.5: 5 to 10.

[0008] Furthermore, both the upper connecting plate and the lower connecting plate are steel plates, and the upper connecting plate and the upper pressure-bearing wear-resistant layer, as well as the lower connecting plate and the lower pressure-bearing wear-resistant layer, are cast as a single unit.

[0009] Advantages of this utility model compared to the prior art:

[0010] 1. This technical solution optimizes the internal structure of the seismic isolation bearing by using a damping body formed by alternating layers of polyurethane elastomer and corrugated steel plate through vulcanization. The corrugation of the steel plate and the polyurethane elastomer filling the gaps between the corrugations allow for energy absorption through corrugation deformation during shear deformation. Under vertical loads, the lateral expansion deformation of the polyurethane elastomer is restricted, increasing the contact area with the polyurethane elastomer, increasing friction, and enhancing energy dissipation capacity. This solves the problem of separation or relative sliding between the steel plate and polyurethane due to insufficient bonding force in traditional seismic isolation bearings, improves interlayer peel strength, and enhances the vertical bearing capacity of the bearing.

[0011] 2. The concave-convex structure of the corrugated steel plate in this technical solution can effectively disperse the stress of the polyurethane elastomer under vertical load and horizontal shear, reduce local stress concentration, and increase the contact area between the two, making the bond between the polyurethane elastomer and the corrugated steel plate tighter, avoiding the problem of polyurethane layer tearing caused by stress concentration.

[0012] 3. The high elasticity of the polyurethane elastomer and the synergistic effect of the corrugated steel plate in this technical solution enable the seismic isolation bearing to recover its deformation through the constraint of the corrugated steel plate while undergoing a large range of horizontal displacement during a strong earthquake.

[0013] 4. This technical solution uses an upper and lower pressure-bearing wear-resistant layer made of short-cut fiber modified polyurethane material, which improves the tensile strength and tear strength of the polyurethane elastomer, thereby improving the vertical bearing capacity and wear resistance of the seismic isolation bearing. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0015] The following will be based on the embodiments of this utility model. Figure 1The 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.

[0016] 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.

[0017] 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.

[0018] Waveguide polyurethane laminated seismic isolation bearing, such as Figure 1As shown, the structure includes an upper connecting plate 1, a lower connecting plate 6, and a damping body disposed between the upper connecting plate 1 and the lower connecting plate 6. The upper end face of the damping body is fixed to the bottom surface of the upper connecting plate 1 through an upper pressure-bearing wear-resistant layer 2, and the lower end face of the damping body is fixed to the upper end face of the lower connecting plate 6 through a lower pressure-bearing wear-resistant layer 5. The damping body includes multiple multi-layer corrugated steel plates 4 distributed vertically and vertically, and a polyurethane elastomer 3 that wraps the multi-layer corrugated steel plates 4 inside and alternately vulcanizes and tightly bonds them together. In the above structure, by optimizing the internal structure of the seismic isolation bearing, a damping body formed by alternately stacking and vulcanizing polyurethane elastomer 3 and corrugated steel plates 4 is used. The corrugations of the corrugated steel plates 4 are utilized, and the polyurethane elastomer 3 fills the gaps between the corrugations. During shear deformation, energy is absorbed through the deformation of the corrugations. Under vertical loads, The lateral expansion and deformation of the polyurethane elastomer 3 are limited, the contact area with the polyurethane elastomer 3 is increased, the friction is increased, and the energy dissipation capacity is enhanced. This solves the problem of separation or relative sliding between the steel plate and polyurethane due to insufficient bonding force in traditional seismic isolation bearings, improves interlayer peel strength, and enhances the vertical bearing capacity of the bearing. The multi-layer corrugated steel plate 4 provides a stable and reliable vertical bearing capacity. The tight bonding between the polyurethane elastomer 3 and the corrugated steel plate 4 effectively transfers and disperses the vertical load. The concave and convex structure of the corrugated steel plate 4 can effectively disperse the stress of the polyurethane elastomer 3 under vertical bearing and horizontal shear, reduce local stress concentration, and the increased contact area between the two makes the bonding between the polyurethane elastomer 3 and the corrugated steel plate 4 tighter, avoiding the problem of polyurethane layer tearing caused by stress concentration.

[0019] The upper pressure-bearing wear-resistant layer 2 and the lower pressure-bearing wear-resistant layer 5 are both made of short-cut fiber modified polyurethane material. The upper pressure-bearing wear-resistant layer 2 and the lower pressure-bearing wear-resistant layer 5 made of short-cut fiber modified polyurethane material improve the tensile strength and tear strength of polyurethane elastomer 3, thereby improving the vertical bearing capacity and wear resistance of the seismic isolation bearing.

[0020] Specifically, the thickness range of the corrugated steel plate 4 is in the ratio of 1 to 1.5 to 5 to 10 of the thickness of the polyurethane elastomer 3.

[0021] The top and bottom surfaces of the polyurethane elastomer 3 are cast integrally with the upper pressure-bearing wear-resistant layer 2 and the lower pressure-bearing wear-resistant layer 5, respectively. Specifically, the upper connecting plate 1 and the lower connecting plate 6 are both steel plates, and the upper connecting plate 1 is cast integrally with the upper pressure-bearing wear-resistant layer 2 and the lower connecting plate 6 is cast integrally with the lower pressure-bearing wear-resistant layer 5.

[0022] This technical solution features a simple structure and novel design. The high elasticity of the polyurethane elastomer 3 and the synergistic effect of the corrugated steel plate 4 enable the seismic isolation bearing to recover its deformation under the constraint of the corrugated steel plate while undergoing a large-scale horizontal displacement during a strong earthquake. Furthermore, the combination of the oil-resistant, acid-alkali-resistant, and UV-resistant polyurethane elastomer 3 and the protective corrugated steel plate can adapt to harsh environments such as high-altitude cold and strong corrosion, extending its service life. Moreover, the vulcanization bonding process creates static friction between the polyurethane elastomer 3 and the corrugated steel plate 4, providing high damping energy dissipation characteristics. During an earthquake, the interlayer sliding of the corrugated steel plate 4 and the elastic deformation of the polyurethane elastomer 3 work together to dissipate energy, effectively reducing the seismic response of the structure.

[0023] 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.

[0024] 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 waveguide polyurethane laminated seismic isolation bearing, characterized in that: It includes an upper connecting plate (1), a lower connecting plate (6), and a shock-absorbing body disposed between the upper connecting plate (1) and the lower connecting plate (6). The upper end face of the shock-absorbing body is fixed to the bottom surface of the upper connecting plate (1) through an upper pressure-bearing wear-resistant layer (2), and the lower end face of the shock-absorbing body is fixed to the upper end face of the lower connecting plate (6) through a lower pressure-bearing wear-resistant layer (5). The shock-absorbing body includes multiple multi-layer corrugated steel plates (4) distributed vertically and vertically, and a polyurethane elastomer (3) that wraps the multi-layer corrugated steel plates (4) inside and alternately vulcanizes and tightly adheres them together.

2. The waveguide polyurethane laminated seismic isolation bearing according to claim 1, characterized in that: The upper pressure-bearing wear-resistant layer (2) and the lower pressure-bearing wear-resistant layer (5) are both made of short-cut fiber modified polyurethane material.

3. The waveguide polyurethane laminated seismic isolation bearing according to claim 1, characterized in that: The top and bottom surfaces of the polyurethane elastomer (3) are cast together with the upper pressure-bearing wear-resistant layer (2) and the lower pressure-bearing wear-resistant layer (5), respectively.

4. The waveguide polyurethane laminated seismic isolation bearing according to claim 1, characterized in that: The ratio of the thickness of the corrugated steel plate (4) to the thickness of the polyurethane elastomer (3) is in the range of 1 to 1.5: 5 to 10.

5. The waveguide polyurethane laminated seismic isolation bearing according to any one of claims 1-4, characterized in that: Both the upper connecting plate (1) and the lower connecting plate (6) are steel plates. The upper connecting plate (1) and the upper pressure-bearing wear-resistant layer (2) and the lower connecting plate (6) and the lower pressure-bearing wear-resistant layer (5) are cast together as a whole.

Images