Environment-friendly high-reset laminated seismic isolation bearing

Abstract

The application discloses an environment-friendly high-reset laminated seismic isolation support and belongs to the technical field of civil engineering structure shock absorption control. The support comprises an upper connecting plate, a lower connecting plate and a laminated main body formed by alternately laminating and vulcanization bonding of rubber layers and steel plate layers, at least one metal rubber core vertically penetrating through the laminated main body and fixedly bonded with a peripheral structure, and an SMA core body which can be additionally arranged. The application completely abandons toxic lead materials, solves the problems of heavy metal pollution, poor self-resetting capacity and long-term unstable performance of traditional lead rubber bearings, and has the advantages of environmental protection, no pollution, high self-resetting, high energy consumption, high durability and designable performance, and is suitable for various buildings, bridge engineering, and harsh engineering scenes such as nuclear power and offshore wind power with high requirements.

Description

Technical Field

[0001] This invention relates to the field of vibration reduction and control technology for civil engineering structures, and more specifically, to an environmentally friendly high-reset laminated seismic isolation bearing. Background Technology

[0002] In the field of seismic engineering structures, base isolation technology, by setting up an isolation layer between the foundation and the superstructure, significantly extends the natural period of the structure and blocks the transmission of seismic energy to the superstructure. It is one of the most widely used and effective seismic technologies. Laminated rubber bearings are the core load-bearing and energy-dissipating components of base isolation systems. Among them, lead-core rubber bearings, with their stable energy dissipation capacity, mature manufacturing process, and low cost, have become the most widely used seismic isolation bearing product in civil buildings, bridge engineering, and municipal infrastructure. Lead-core rubber bearings utilize a lead core at the center of the laminated rubber body to dissipate seismic energy through the plastic deformation of lead. Simultaneously, the laminated rubber provides horizontal flexibility and vertical load-bearing capacity, achieving a synergistic effect of seismic isolation and energy dissipation.

[0003] However, long-term engineering applications and theoretical research have revealed that existing mainstream laminated seismic isolation bearings, represented by lead-core rubber bearings, have inherent defects that are difficult to overcome. They cannot meet the high-performance requirements of current green buildings, resilient engineering in high-intensity earthquake zones, and infrastructure in extreme environments. For example: 1. They have serious environmental defects and do not meet the requirements of green and sustainable development. Lead is a heavy metal with strong neurotoxicity. Throughout the entire life cycle of the bearing, from production and processing to on-site installation, long-term service, and dismantling, there is a risk of lead leakage and heavy metal pollution, causing irreversible damage to construction workers, the surrounding environment, and the ecosystem. Currently, many countries and regions around the world have issued regulations restricting the application of lead products in construction projects. Traditional lead-core rubber bearings can no longer meet the engineering construction requirements of green buildings in my country, posing a clear environmental compliance risk; 2. Their self-resetting ability is seriously insufficient, resulting in large residual deformation after earthquakes. The energy dissipation mechanism of lead cores relies entirely on their own plastic deformation. After a strong earthquake, the lead core will undergo irreversible permanent plastic deformation, directly leading to residual displacement of the bearing. This not only affects the normal use of the superstructure and significantly reduces the subsequent seismic performance of the bearing, but in severe cases, the entire bearing needs to be replaced, significantly increasing the cost and time of post-earthquake repair. It cannot meet the requirements of resilient engineering construction where functions can be quickly restored after an earthquake. 3. Poor long-term service performance stability and insufficient durability. Lead materials are prone to creep and fatigue damage under long-term cyclic loads, and their mechanical properties are highly sensitive to temperature changes. In high-temperature environments, their strength and damping performance are easily reduced significantly, and in low-temperature environments, their brittleness is significantly increased. It is impossible to guarantee long-term performance stability under complex conditions such as extreme temperatures, high humidity salt spray, and high-cycle cyclic loads. The service life of the bearing is limited, making it difficult to apply to engineering scenarios with stringent durability requirements, such as offshore wind power, nuclear power facilities, and high-altitude and cold regions.

[0004] Although there are studies in the industry on replacing lead cores with other damping materials, the relevant solutions generally suffer from problems such as insufficient damping energy dissipation capacity, poor performance in coordination with the laminated rubber body, complex preparation process, high production cost, and difficulty in large-scale application. A mature and reliable technical solution that can fully replace lead core rubber bearings has not yet been formed, so it is urgent to improve it. Summary of the Invention

[0005] This invention provides an environmentally friendly high-reset laminated seismic isolation bearing. The problem it aims to solve is to overcome the inherent defects of existing lead-core rubber bearings, such as high risk of heavy metal pollution, poor self-reset capability, unstable long-term service performance, and insufficient durability. It provides an environmentally friendly high-reset laminated seismic isolation bearing that abandons toxic lead materials and uses a metal rubber core as the core energy dissipation and reset element, achieving a synergy between high energy efficiency and high self-reset performance. At the same time, it takes into account excellent durability, performance designability, and engineering compatibility, fully meeting the application needs of various engineering scenarios for green and high-performance seismic isolation bearings.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An environmentally friendly high-reset laminated seismic isolation bearing includes an upper connecting plate, a lower connecting plate, and a laminated body. The laminated body is located between the upper connecting plate and the lower connecting plate. The laminated body includes multiple rubber layers and steel plate layers. The rubber layers and steel plate layers are alternately stacked and vulcanized to form the laminated body. At least one metal rubber core is vertically inserted into the laminated body. The metal rubber core is bonded and fixed to the rubber layers and steel plate layers.

[0008] Furthermore, at least one SMA core is vertically inserted through the laminated body, and the SMA core is bonded and fixed to the rubber layer and the steel plate layer.

[0009] Furthermore, the metal rubber core is made of metal wires through weaving, molding and sintering processes.

[0010] Furthermore, the metal wire can be any one of stainless steel wire, shape memory alloy wire, or titanium alloy wire.

[0011] Furthermore, the relative density of the metal-rubber core is 10% to 40%.

[0012] Furthermore, a protective layer is provided on the outside of the laminated body. Both the protective layer and the rubber layer are made of any one of high-damping rubber, natural rubber, or high-damping composite material.

[0013] Furthermore, the shape of the seismic isolation bearing can be any one of circular, square, or rectangular.

[0014] Furthermore, a metal rubber core or SMA core is vertically inserted into the central area of ​​the laminated body.

[0015] Furthermore, the upper and lower ends of the metal rubber core and the SMA core are respectively vulcanized and bonded to the upper connecting plate and the lower connecting plate.

[0016] Furthermore, both the upper and lower connecting plates are provided with bolt holes for connecting to the external structure and the stacked main body.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. This invention eliminates the toxic lead material in traditional lead-core rubber bearings and uses metal rubber as the core energy-consuming component. There is no risk of heavy metal leakage or pollution in the entire process of production, installation, service, and dismantling. The core material can be recycled and reused, which fully meets the engineering construction requirements of green building and sustainable development. There is no environmental compliance risk, and the applicable scenarios are not restricted by policies.

[0019] 2. The metal-rubber core used in this invention dissipates seismic energy through the elastoplastic deformation of the internal metal wire network and the interfacial friction between the wires. Unlike the energy dissipation mechanism of lead cores which rely on permanent plastic deformation, this core can form a full and stable hysteresis loop under reciprocating seismic action. It can provide strong recovery force after the earthquake, significantly reduce or even eliminate residual deformation of the support, avoid post-earthquake support replacement and structural repair work, and perfectly meet the requirements of resilient engineering construction where functions can be quickly restored after the earthquake.

[0020] 3. The metal-rubber core of this invention combines the mechanical stability of metal with the high elasticity of rubber. It has excellent properties such as resistance to high and low temperatures, anti-aging, corrosion resistance, and fatigue resistance. It can maintain stable mechanical properties in extreme environments, completely solving the industry pain points of lead cores such as easy creep, temperature sensitivity, and rapid fatigue performance decay. It significantly extends the service life of the support and can meet the application requirements of harsh engineering scenarios such as nuclear power facilities, offshore wind power platforms, and high-altitude and cold regions.

[0021] 4. This invention can precisely customize the stiffness, damping, and hysteresis characteristics of the bearing by adjusting the material, diameter, weaving method, and relative density of the metal wires in the metal rubber core. Compared with the traditional lead core bearing, which can only adjust the performance through the core size, this invention has a wider adjustable range and higher design precision, and can flexibly adapt to the differentiated seismic isolation requirements of different seismic zones, different types of buildings, and infrastructure. At the same time, the metal rubber core can provide an equivalent damping ratio far exceeding that of the traditional lead core bearing, greatly improving the energy dissipation capacity of the bearing and significantly reducing the seismic response of the superstructure under strong earthquakes.

[0022] 5. The main structure of this invention inherits the mature system of traditional laminated rubber bearings, only replacing the core energy-consuming element with a metal rubber core. It is fully compatible with the existing vulcanization molding process and engineering installation method of bearings, without the need for major modifications to existing production lines and construction methods. The manufacturing cost is controllable, and it is easy for engineering technicians to accept and apply, possessing strong value for large-scale promotion. At the same time, an SMA core can be added according to engineering needs to further improve the self-resetting and energy-consuming performance of the bearing, flexibly expanding the performance boundaries and applicable scenarios of the bearing. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings:

[0024] Figure 1 This is a cross-sectional view of a first embodiment of an environmentally friendly high-reset laminated seismic isolation bearing of the present invention.

[0025] Figure 2 This is a circular top view of an embodiment of an environmentally friendly high-reset laminated seismic isolation bearing of the present invention.

[0026] Figure 3 This is a square top view of an embodiment of an environmentally friendly high-reset laminated seismic isolation bearing of the present invention.

[0027] Figure 4 This is a cross-sectional view of a second embodiment of an environmentally friendly high-reset laminated seismic isolation bearing of the present invention.

[0028] Figure 5 This is a top view of a circular structure representing a second embodiment of an environmentally friendly, high-reset, laminated seismic isolation bearing of the present invention.

[0029] Figure 6 This is a top view of an embodiment two of the environmentally friendly high-reset laminated seismic isolation bearing of the present invention.

[0030] In the diagram: 1-Upper connecting plate; 2-Lower connecting plate; 3-Layered main body; 31-Rubber layer; 32-Steel plate layer; 33-Protective layer; 4-Metal rubber core; 5-SMA core; 6-Bolt hole. Detailed Implementation

[0031] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0032] Example 1

[0033] like Figures 1 to 3 As shown, this invention provides an environmentally friendly high-reset laminated seismic isolation bearing, comprising an upper connecting plate 1, a lower connecting plate 2, and a laminated body 3. The laminated body 3 is fixedly disposed between the upper connecting plate 1 and the lower connecting plate 2. The top surface of the upper connecting plate 1 and the bottom surface of the lower connecting plate 2 are provided with multiple bolt holes 6 for connecting with the upper structure, the lower foundation, and the laminated body 3. The bolt holes 6 are evenly arranged along the circumference of the connecting plate to ensure reliable anchoring and force transmission between the bearing and the upper and lower structures.

[0034] The laminated main body 3 comprises multiple layers of rubber 31 and multiple layers of steel plate 32. The rubber layers 31 and steel plate layers 32 are alternately stacked from top to bottom and integrally bonded by a high-temperature vulcanization process. The outer side of the laminated main body 3 is covered with a protective layer 33, which is integrally vulcanized with the rubber layers 31 using the same material, forming a full-coverage protection for the internal laminated structure, isolating it from external environmental corrosion such as water vapor and salt spray, and improving the durability of the support. In this embodiment, both the rubber layers 31 and the protective layer 33 are made of natural rubber 31. However, depending on the additional damping requirements of the project, they can be replaced with high-damping rubber layers 31 or high-damping composite material layers.

[0035] A core mounting hole is vertically drilled through the central area of ​​the laminated main body 3, and a cylindrical metal-rubber core 4 is installed inside the mounting hole. The outer wall of the metal-rubber core 4 is bonded and fixed to the inner wall of the surrounding rubber layer 31 and steel plate layer 32 through a vulcanization process. The upper and lower ends of the metal-rubber core 4 are respectively vulcanized and bonded to the inner end faces of the upper connecting plate 1 and the lower connecting plate 2, ensuring that the metal-rubber core 4, the laminated main body 3, the upper connecting plate 1, and the lower connecting plate 2 cooperate in bearing force, deform synchronously, and work together. In this embodiment, the seismic isolation bearing is circular in shape (corresponding to...). Figure 2 It can also be processed into a square or rectangular shape (corresponding to) according to the installation space and stress requirements of the project. Figure 3 The change in the shape of the support does not affect the stress mechanism and performance of the core structure.

[0036] In this embodiment, the metal-rubber core 4 is integrally manufactured from stainless steel wire through weaving, molding, and sintering processes. The relative density of the metal-rubber core 4 is within the design range of 10% to 40%. The material, diameter, weaving method, and relative density of the metal wire can be flexibly adjusted according to the differentiated requirements of the project for the support stiffness, damping, and load-bearing capacity, achieving precise customization of the support's mechanical properties. For example, the metal wire can be replaced with titanium alloy wire to suit highly corrosive marine engineering scenarios; or it can be replaced with shape memory alloy wire to further improve the core's self-resetting performance.

[0037] The seismic isolation bearing of this embodiment inherits the mature system of traditional lead-core rubber bearings in its main structure. It only replaces the core energy-consuming element from lead core to metal rubber core 4. It is fully compatible with the existing vulcanization molding production line and engineering installation method of laminated rubber bearings. It does not require major modification to the existing process, the manufacturing cost is controllable, and it is easy for engineering technicians to accept and apply. It has great value for large-scale promotion.

[0038] The working principle of this embodiment is as follows:

[0039] When the support is subjected to vertical loads, the steel plate layer 32 within the laminated main body 3 constrains the lateral deformation of the rubber layer 31, providing the support with stable vertical bearing capacity and stiffness, ensuring the vertical safety of the superstructure. When the support is subjected to horizontal seismic action, the horizontal shear force is transmitted to the laminated main body 3 and the metal-rubber core 4 through the upper connecting plate 1 and the lower connecting plate 2. The laminated main body 3 significantly extends the natural vibration period of the structure through its own horizontal flexibility, blocking the transmission of seismic energy to the superstructure and realizing the core seismic isolation function. At the same time, the metal-rubber core 4 undergoes synchronous shear deformation with the support, and its internal metal wire network undergoes elastoplastic bending, stretching, and interfacial friction, efficiently dissipating seismic energy. Unlike the energy dissipation mechanism of lead cores that rely on permanent plastic deformation, the metal-rubber core 4 can simultaneously generate strong elastic recovery force during deformation. After the earthquake, it can drive the support to quickly return to its initial position, significantly reducing or even completely eliminating the residual deformation of the support, eliminating the need to replace the support after the earthquake, and achieving a synergy between high energy dissipation and high self-resetting performance.

[0040] Example 2

[0041] like Figures 4 to 6 As shown, the environmentally friendly high-reset laminated seismic isolation bearing disclosed in this embodiment is a composite structure of metal rubber core 4 and SMA core 5, which is suitable for harsh engineering scenarios with higher requirements for energy consumption capacity, self-reset performance, durability and extreme environmental adaptability, such as high-intensity earthquake zones, nuclear power facilities, offshore wind power platforms, and high-altitude and cold regions.

[0042] The core structure of this embodiment is basically the same as that of Embodiment 1, with the only difference being that at least one metal rubber core 4 and one SMA core 5 are vertically arranged throughout the laminated body 3. In this embodiment, a cylindrical SMA core 5 is provided in the central area of ​​the laminated body 3, and four cylindrical metal rubber cores 4 are evenly arranged around the circumference of the SMA core 5; the number, arrangement, size, and material combination of the metal rubber cores 4 and SMA cores 5 can also be flexibly adjusted according to engineering performance requirements.

[0043] Both the metal rubber core 4 and the SMA core 5 vertically penetrate the laminated body 3. The outer walls of both are bonded and fixed to the inner walls of the surrounding rubber layer 31 and steel plate layer 32 through a vulcanization process. The upper and lower ends of both are respectively vulcanized and bonded to the inner end faces of the upper connecting plate 1 and the lower connecting plate 2, ensuring that the metal rubber core 4, the SMA core 5 and the laminated body 3 work together to bear force and deform synchronously, forming a multi-stage energy dissipation and collaborative reset mechanism.

[0044] In this embodiment, the metal rubber core 4 is made of shape memory alloy wire through weaving, molding, and sintering processes, and the SMA core 5 is formed from shape memory alloy rods. Utilizing the superelastic properties of shape memory alloys, the self-resetting capability and energy dissipation performance of the bearing are further enhanced. In this embodiment, the rubber layer 31 and the protective layer 33 are made of high-damping rubber layer 31, forming a three-level energy dissipation system with the metal rubber core 4 and the SMA core 5, further improving the energy dissipation efficiency of the bearing. In this embodiment, the seismic isolation bearing has a circular shape (corresponding to...). Figure 5 It can also be processed into a square or rectangular shape (corresponding to) according to the installation space and stress requirements of the project. Figure 6 ).

[0045] This embodiment allows for the flexible addition of a metal rubber core 4 according to engineering requirements, further enhancing the self-resetting and energy dissipation performance of the support, and flexibly expanding the performance boundaries and applicable scenarios of the support. Its working principle is as follows:

[0046] Under horizontal seismic loading, the laminated main body 3 provides core horizontal flexibility, achieving foundation isolation and significantly reducing the seismic response of the superstructure. The metal-rubber core 4 dissipates the seismic energy of the main body through the elastoplastic deformation of the internal metal wires and interface friction, while providing foundation restoring force. The SMA core 5 undergoes shear deformation synchronously with the support, utilizing its hyperelastic properties to generate extremely strong restoring force and additional damping under large deformation, forming a synergistic energy dissipation and synergistic reset mechanism with the metal-rubber core 4. Compared with the single metal-rubber core 4 structure in Embodiment 1, the composite core structure of this embodiment can further improve the equivalent damping ratio and post-earthquake self-reset capability of the support, maintain minimal residual deformation under extreme earthquake loading, and further improve the fatigue performance and long-term service stability of the support, perfectly meeting the seismic isolation requirements of major engineering projects with high safety levels and high toughness requirements.

[0047] The following is a comparison of the parameters of a specific embodiment to illustrate the differences between this solution and the traditional lead-core rubber seismic isolation bearing.

[0048] In this embodiment, the metal rubber core 4 is made of 304 stainless steel with a density of 3.1 g / cm³. 3 .

[0049] The density of 304 stainless steel is 7.93 g / cm³. 3

[0050] The Young's modulus of 304 stainless steel is 193 GPa.

[0051] The yield strength of 304 stainless steel is 205 MPa (annealed state).

[0052] The Poisson's ratio of 304 stainless steel is 0.3.

[0053] The calculation process for the main mechanical parameters of metallic rubber is as follows:

[0054] Relative density: ;

[0055] Porosity: ;

[0056] Structural coefficient: k=0.5 [1，4]

[0057] Poisson's ratio for metallic rubber: 0.3 [1，2]

[0058] Metal-rubber elastic modulus [1,2] :

[0059] metal rubber yield stress [1,2] :

[0060] Plastic strain of metal rubber [1,2,3] :

[0061] Fracture plastic strain of the metal wire matrix (e.g., approximately 40% for a 304 stainless steel monofilament);

[0062] α: Deformation constraint coefficient of porous structures (α = 10% to 15% is commonly used in engineering).

[0063] The parameters of LRB (lead-core rubber isolation bearing) and MRB (metal-rubber core 4-way isolation bearing) are shown in the table below.

[0064]

[0065] In specific embodiments, the mechanical properties of the two types of supports are calculated and compared using the LRB and MRB parameters in the table above as examples.

[0066] I. Calculation of Mechanical Properties of Two Types of Composite Seismic Isolation Bearings

[0067] 1. Calculation of horizontal stiffness

[0068] The horizontal stiffness mainly comprises contributions from the rubber layer 31 and the core material. The rubber layer 31 has identical parameters, therefore the horizontal stiffness of the rubber portion is consistent. The shear stiffness of the core material is calculated based on its shear modulus.

[0069] Horizontal stiffness of the rubber component:

[0070] rubber shear modulus G r =0.8 MPa = 0.8 N / mm 2 ;

[0071] The effective diameter of the support is D = 220 mm, and the core material diameter is D p = 20 mm;

[0072] Effective area ;

[0073] Total rubber thickness T r =42.4mm;

[0074] Rubber horizontal stiffness ;

[0075] Core shear stiffness:

[0076] Core area ;

[0077] Core material shear modulus: ;

[0078] For LRB: E p =16460MPa, v p =0.44, ;

[0079] For MRB:E p =38000MPa, v p =0.3,

[0080] Core shear stiffness:

[0081] For LRB:

[0082] For MRB:

[0083] Elastic stiffness (under small to medium deformation):

[0084]

[0085] For LRB: =43.0468kN / mm

[0086] For MRB: =109.0103 kN / mm

[0087] Post-yield stiffness (under large deformation, assuming that only rubber contributes after the lead core yields, while the metal-rubber core 4 will not completely lose stiffness after yielding and will enter the plastic hardening stage, still providing a certain hardening stiffness):

[0088] For LRB:K d =K r =711.3 N / mm = 0.7113 kN / mm

[0089] For MRB: ;

[0090] The post-yield hardening modulus of metal rubber is approximately 1% to 5% of its elastic modulus. It is recommended to use 3% as an intermediate value for engineering applications.

[0091] Therefore, the formula used here is to calculate the hardening shear modulus of the 4-yield thickness of the metal-rubber core:

[0092]

[0093] 2. Vertical bearing capacity calculation

[0094] The vertical load-bearing capacity is shared by the rubber layer 31 and the core material, but the rubber layer 31 is the primary load-bearing element. It is assumed that the compressive strength of the rubber is 10 times its shear modulus (i.e.,...). The load-bearing capacity of the core material is based on its yield stress.

[0095] Vertical load-bearing capacity of the rubber section:

[0096]

[0097] Vertical load-bearing capacity of core material:

[0098] LRB: Yield stress ,

[0099] MRB: Yield stress ,

[0100] Total vertical bearing capacity:

[0101] LRB:

[0102] MRB:

[0103] 3. Damping ratio calculation

[0104] The hysteresis curve of the metal-rubber core 4 exhibits stable rectangular ring-like characteristics, and the damping ratio can be approximated using an equivalent bilinear model. Based on the bilinear model, the equivalent damping ratio is calculated at the design displacement u = 42.4 mm (100% shear strain). The formula is as follows:

[0105] Yield strength: Yield displacement: ;

[0106] Horizontal equivalent stiffness: ;

[0107] Energy dissipation per revolution:

[0108] Equivalent damping ratio

[0109] For LRB: ;

[0110]

[0111]

[0112]

[0113] For MRB: ;

[0114]

[0115]

[0116]

[0117] II. Comparison of Performance Calculation Results of the Two Types of Supports

[0118]

[0119] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. An environmentally friendly high-reset laminated seismic isolation bearing, characterized in that: The device includes an upper connecting plate, a lower connecting plate, and a stacked body. The stacked body is located between the upper connecting plate and the lower connecting plate. The stacked body includes multiple rubber layers and steel plate layers. The rubber layers and steel plate layers are alternately stacked and vulcanized to form the stacked body. At least one metal rubber core is vertically disposed inside the stacked body. The metal rubber core is bonded and fixed to the rubber layers and steel plate layers.

2. The environmentally friendly high-reset laminated seismic isolation bearing according to claim 1, characterized in that: At least one SMA core is vertically inserted into the laminated body, and the SMA core is bonded and fixed to the rubber layer and the steel plate layer.

3. The environmentally friendly high-reset laminated seismic isolation bearing according to claim 1, characterized in that: The metal-rubber core is made of metal wires through weaving, molding and sintering processes.

4. The environmentally friendly high-reset laminated seismic isolation bearing according to claim 2, characterized in that: The metal wire is any one of stainless steel wire, shape memory alloy wire, or titanium alloy wire.

5. The environmentally friendly high-reset laminated seismic isolation bearing according to claim 1, characterized in that: The relative density of the metal-rubber core is 10% to 40%.

6. The environmentally friendly high-reset laminated seismic isolation bearing according to claim 1, characterized in that: The outer side of the laminated body is provided with a protective layer, and both the protective layer and the rubber layer are made of any one of high-damping rubber layer, natural rubber layer or high-damping composite material layer.

7. The environmentally friendly high-reset laminated seismic isolation bearing according to claim 1, characterized in that: The seismic isolation bearing can be any one of the following shapes: circular, square, or rectangular.

8. The environmentally friendly high-reset laminated seismic isolation bearing according to claim 2, characterized in that: The metal rubber core or the SMA core is vertically disposed in the central region of the laminated body.

9. The environmentally friendly high-reset laminated seismic isolation bearing according to claim 2, characterized in that: The upper and lower ends of the metal rubber core and the SMA core are respectively vulcanized and bonded to the upper connecting plate and the lower connecting plate.

10. The environmentally friendly high-reset laminated seismic isolation bearing according to claim 1, characterized in that: Both the upper connecting plate and the lower connecting plate are provided with bolt holes for connecting to the external structure and the stacked main body.

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