A decentralized composite anti-seismic device system based on rubber shock insulation support and construction method

Abstract

The application discloses a kind of dispersion composite anti-seismic device system based on rubber shock insulation support and construction method, wherein: four rubber shock insulation supports are arranged on shock insulation lower support pier, and the lower side of rubber shock insulation support is connected with shock insulation lower support pier through lower flange plate, and the upper side is connected with shock insulation upper support pier through upper flange plate, and fastening bolt is installed in bolt hole;Spring is connected between adjacent rubber shock insulation supports;A circle of spherical hinge support is embedded on shock insulation layer terrace, and upper flange plate is connected with spherical hinge support through elastic steel cable;Multiple symmetrically arranged springs are arranged on the two sides of shock insulation upper support pier beam, and spring is fixed on shock insulation layer terrace through pull ring;Multiple dampers are arranged in lower part, and the upper side of damper is fixed with the lower side of shock insulation upper support pier beam through sling chain, and the lower side of damper is fixed with shock insulation layer terrace through pull rod.The application guarantees anti-seismic effect, also has self-repairing function, reduces the work frequency of later maintenance and repair, and reduces maintenance cost.

Description

Technical Field

[0001] This invention relates to the field of seismic resistance technology for buildings in earthquake-prone areas, and particularly to a decentralized composite seismic resistance device system and construction method based on rubber seismic isolation bearings. Background Technology

[0002] With societal development, the construction industry has expanded its scope, with various buildings and structures found across the country. When buildings and structures are located in seismic zones, various seismic isolation and damping measures are taken to reduce the destructive effects of earthquakes on the buildings and structures in order to protect the safety of users. Rubber seismic isolation bearings are one such measure.

[0003] Currently, rubber seismic isolation bearings on the market vary in size and weight. This invention improves the seismic resistance method of rubber seismic isolation bearings used in general building applications. It is understood that commonly used rubber seismic isolation bearings are generally ≥700mm in size and weigh ≥700kg per bearing. Due to their heavy weight, installation and subsequent maintenance / replacement are difficult, requiring the assistance of traction and lifting machinery. However, rubber seismic isolation bearings are typically located within the seismic isolation layer of a building or at the bearing location of a bridge, making direct operation with large traction and lifting machinery extremely inconvenient.

[0004] To address the aforementioned issues, this invention develops a decentralized composite seismic isolation device system and construction method based on rubber seismic isolation bearings. This avoids the use of large machinery, reduces the difficulty of manual handling, effectively reduces the input of materials, manpower, and machinery, saves costs, and ensures construction safety within a limited space. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a decentralized composite seismic resisting device system and construction method based on rubber seismic isolation bearings, which addresses the deficiencies in the prior art.

[0006] The technical solution adopted by this invention to solve its technical problem is:

[0007] This invention provides a distributed composite seismic isolation device system based on rubber seismic isolation bearings, comprising: rubber seismic isolation bearings, upper flange plate, lower flange plate, bolt holes, seismic isolation lower support, seismic isolation layer floor, ball joint bearings, elastic steel cables, fastening bolts, springs, pull rings, dampers, lifting chains, tie rods, seismic isolation upper support, and seismic isolation upper support connecting beam; wherein:

[0008] Four rubber seismic isolation bearings are installed on the lower seismic isolation pier. The lower part of the rubber seismic isolation bearing is connected to the lower seismic isolation pier through a lower flange plate with a ring of bolt holes. The upper part of the rubber seismic isolation bearing is connected to the upper seismic isolation pier through an upper flange plate with a ring of bolt holes. Fastening bolts are installed in the bolt holes.

[0009] Adjacent rubber seismic isolation bearings are connected by springs; a ring of eight ball joint bearings is pre-embedded around the lower seismic isolation pier on the seismic isolation layer floor, and the outer edge of the upper flange plate is connected to the ball joint bearings by elastic steel cables.

[0010] The upper support beam of the seismic isolation pier is set perpendicular to the upper support pier. Multiple symmetrically arranged springs are installed on both sides of the upper support beam, and the springs are fixed to the seismic isolation layer floor by pull rings. Multiple dampers are installed at the lower part of the upper support beam. The upper part of the dampers is fixed to the lower part of the upper support beam by a hanging chain, and the lower part of the dampers is fixed to the seismic isolation layer floor by a tie rod.

[0011] Furthermore, the internal structure of the rubber seismic isolation bearing of the present invention is composed of repeated stacking of "steel plate-rubber-steel plate-rubber", with a lead core perpendicular to the direction of the steel plate arranged in the center of the interior.

[0012] Furthermore, the upper flange plate and lower flange plate of the present invention are integral components with the rubber seismic isolation bearing, made of 20mm thick steel plate, and are square or round.

[0013] Furthermore, the seismic isolation lower support of the present invention is a reinforced concrete structure, which belongs to the building foundation and is located directly above the foundation. It is used to provide a platform for the installation of rubber seismic isolation bearings. The seismic isolation layer floor is a construction platform surface formed by pouring after backfilling the ground beam, which provides an operating surface for pouring the seismic isolation lower support, installing rubber seismic isolation bearings, and constructing the superstructure.

[0014] Furthermore, the seismic isolation upper support of the present invention is a reinforced concrete structure, belonging to the main body of the building, located under the column, directly above the seismic isolation lower support, and its vertical projection size is the same as that of the seismic isolation lower support; the seismic isolation upper support connecting beam is a reinforced concrete structure, belonging to the main body of the building, and is a first-floor slab structural beam that connects the seismic isolation upper support to the first-floor slab.

[0015] Furthermore, the ball joint support of the present invention is a pear-shaped component that is thicker at the bottom and thinner at the top. It is embedded in the seismic isolation layer floor and can rotate 360° horizontally along its center line and swing vertically along its center line by a certain arc. It has an opening at the top for an elastic steel cable to pass through.

[0016] Furthermore, the elastic steel cable of the present invention is a steel cable with a certain degree of elasticity, one end of which passes through the upper opening of the ball joint support, and the other end passes through the lower edge of the upper flange plate of the rubber vibration isolation support.

[0017] Furthermore, the damper of the present invention is a long strip-shaped component with a damping device inside, the upper surface of which is connected to the lower surface of the seismic isolation upper support beam by a suspension chain, and the lower surface is connected to the seismic isolation layer floor by a tie rod.

[0018] Furthermore, the suspension chain of the present invention is composed of metal rings connected in series, and its function is to connect the damper and the upper support beam of the seismic isolation pier; the lower end of the tie rod is connected to the seismic isolation layer floor through a hinge support, and can swing within a certain range, while the upper end is connected to the lower surface of the damper. The upper and lower ends are connected by a spring, so that the tie rod has a certain degree of flexibility.

[0019] This invention provides a construction method for a distributed composite seismic isolation device system based on rubber seismic isolation bearings, the method comprising the following steps:

[0020] Preparation: During the foundation construction phase, after pouring the concrete for the ground beams and foundations, backfill and compact the soil between the ground beams to prepare for pouring the seismic isolation layer. Extend 50cm outward from the positioning axis of the lower seismic isolation pier and 50cm to both sides from the vertical projection line of the upper seismic isolation pier connecting beam on the seismic isolation layer. Embed the ball hinge bearings and tie rings into the seismic isolation layer. Simultaneously, embed the tie rod connectors at the corresponding location on the seismic isolation layer directly below the lower surface of the upper seismic isolation pier connecting beam to form the tie point of the seismic resistance system. Finally, pour the seismic isolation layer to provide an operating surface for pouring the lower seismic isolation piers, installing rubber seismic isolation bearings, and constructing the superstructure.

[0021] Installation of seismic isolation devices: After the construction of the seismic isolation layer floor is completed, the steel bars of the seismic isolation lower support are washed and cleaned, and then the formwork is erected and the seismic isolation lower support is poured. The bolt holes on the upper surface of the seismic isolation lower support are cleaned, and the rubber seismic isolation bearings are transported to the seismic isolation lower support using a trailer or lifting machinery, so that the bolt holes on the lower flange plate of the rubber seismic isolation bearing are aligned with the bolt holes on the upper surface of the seismic isolation lower support. After installation, the fastening bolts are tightened. The rubber seismic isolation bearings on the same seismic isolation lower support are installed in sequence.

[0022] On the outside of the rubber seismic isolation bearing, the lower end of the elastic steel cable is passed through the upper opening of the ball joint bearing pre-embedded in the seismic isolation layer, and the upper end of the elastic steel cable is passed through the pull ring on the lower edge of the upper flange plate of the rubber seismic isolation bearing, connecting the rubber seismic isolation bearing to the seismic isolation layer through "pull ring - elastic steel cable - ball joint bearing"; on the inside of the rubber seismic isolation bearing, the spring is passed through the pull ring on the lower edge of the upper flange plate of two adjacent rubber seismic isolation bearings, connecting the two adjacent rubber seismic isolation bearings.

[0023] Construction of the superstructure: After the rubber seismic isolation bearings are installed, a prefabricated steel cage for the upper seismic isolation pier is installed above the upper flange plate of the rubber seismic isolation bearings and enclosed with a template. The superstructure is then formed by casting: the upper seismic isolation pier and the upper seismic isolation pier connecting beam. Before casting the upper seismic isolation pier connecting beam, tie rings are pre-embedded on both sides and the bottom surface of the upper seismic isolation pier connecting beam as tie points.

[0024] Complete the seismic resistance system: After the superstructure is poured and the concrete strength reaches the construction requirements, remove the formwork and clean the pre-embedded pull rings on both sides and the bottom surface of the seismic isolation upper support beam. Pass one end of the spring through the pre-embedded pull rings on both sides of the seismic isolation upper support beam, and the other end through the pull ring pre-embedded in the seismic isolation layer floor. Connect the seismic isolation upper support beam and the seismic isolation layer floor through the "pull ring-spring-pull ring" connection. Install the lower end of the tie rod at the corresponding location in the seismic isolation layer floor directly below the lower surface of the seismic isolation upper support beam. Connect the upper end of the tie rod to the lower surface of the damper. Connect the upper surface of the damper to the lower end of the suspension chain. Connect the upper end of the suspension chain to the pre-embedded pull ring on the bottom surface of the seismic isolation upper support beam. Connect the seismic isolation upper support beam and the seismic isolation layer floor through the "pull ring-suspension chain-damper-tie rod" connection to form a complete seismic resistance system.

[0025] The beneficial effects of this invention are as follows: This invention provides a decentralized composite seismic isolation device system and construction method based on rubber seismic isolation bearings. When constructing the seismic isolation layer floor, ball hinge bearings are pre-embedded in the seismic isolation layer floor. At the same time, pull rings are pre-embedded on the seismic isolation layer floor corresponding to the periphery of the upper seismic isolation support beam. The rubber seismic isolation bearings and ball hinge bearings are connected by elastic steel cables. Adjacent rubber seismic isolation bearings are connected by springs. The upper seismic isolation support beam and the seismic isolation layer floor are connected by springs. The upper surface of the damper and the lower surface of the upper seismic isolation support beam are connected by a chain. The lower part of the damper is connected to the seismic isolation layer floor by a tie rod. The entire device forms a seismic isolation device system with self-healing function.

[0026] (1) The small-sized rubber seismic isolation bearing used in this invention has the characteristics of small size and light weight, which makes it convenient for operators to handle, reduces the construction difficulty and cost of installation and replacement, greatly improves construction efficiency, ensures construction period, and is economical.

[0027] (2) In this invention, adjacent rubber seismic isolation bearings are connected by springs, which reduces the relative displacement of adjacent rubber seismic isolation bearings 1 and maintains stability.

[0028] (3) In this invention, the rubber seismic isolation bearing is connected to the seismic isolation layer floor by elastic steel cable, and the upper support beam of the seismic isolation layer is connected to the seismic isolation layer floor by spring, which improves the ability of the seismic system to resist horizontal displacement of seismic load.

[0029] (4) The present invention uses a damper applied to the connecting beam of the seismic isolation upper support to improve the seismic resistance of the structure.

[0030] (5) The replacement of the elastic steel cable, spring, damper, suspension chain and tie rod used in this invention is much less difficult than the replacement of the rubber seismic isolation bearing. It is convenient for later maintenance, reduces maintenance costs, facilitates construction by operators, and has a fast construction cycle.

[0031] (6) The device system of the present invention adopts flexible connection methods such as elastic steel cables, springs, and tie rods to ensure the anti-seismic effect while also having a self-repair function, reducing the frequency of later maintenance and repair work and reducing maintenance costs.

[0032] (7) The ball joint support of the device of the present invention can rotate (swing) in any direction, which satisfies the restriction requirements required for the uncertain displacement generated by the seismic load.

[0033] (8) The construction method in this invention is simple to operate, has high construction efficiency, requires less equipment and personnel, saves costs and has high safety. Attached Figure Description

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0035] Figure 1 This is a schematic diagram of the rubber seismic isolation bearing structure according to an embodiment of the present invention;

[0036] Figure 2 This is a schematic diagram of the seismic isolation lower support structure according to an embodiment of the present invention;

[0037] Figure 3 This is a schematic diagram of the rubber seismic isolation bearing installation structure according to an embodiment of the present invention. Figure 1 ;

[0038] Figure 4 This is a schematic diagram of the rubber seismic isolation bearing installation structure according to an embodiment of the present invention. Figure 2 ;

[0039] In the diagram: 1. Rubber seismic isolation bearing; 2. Upper flange plate; 3. Lower flange plate; 4. Bolt hole; 5. Lower seismic isolation support; 6. Seismic isolation layer floor; 7. Ball joint bearing; 8. Elastic steel cable; 9. Fastening bolt; 10. Spring; 11. Pull ring; 12. Damper; 13. Lifting chain; 14. Tie rod; 15. Upper seismic isolation support; 16. Upper seismic isolation support connecting beam. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0041] like Figures 1-4 As shown, in the distributed composite seismic isolation device system based on rubber seismic isolation bearings of this invention:

[0042] Rubber seismic isolation bearings are key components for building seismic resistance. Their internal structure is typically composed of repeated stacks of steel plates and rubber plates, with a lead core perpendicular to the steel plates at the center to increase stiffness, raise the yield stress, and reduce displacement during earthquakes. Their operating principle is either to increase structural flexibility to prolong the natural period, thereby reducing seismic loads, or to increase damping or energy dissipation to reduce structural displacement due to the prolonged natural period.

[0043] The upper flange plate 2 is an integral component of the rubber seismic isolation bearing. It is processed into a whole with the rubber seismic isolation bearing in the factory. The connection between the two can be regarded as a fixed connection. It is mainly made of 20mm thick steel plate and is generally square or round. Its function is to protect the lower rubber seismic isolation bearing and bear and transfer the load of the upper structure.

[0044] The lower flange plate 3 is an integral component of the rubber seismic isolation bearing. It is processed into a whole with the rubber seismic isolation bearing in the factory. The connection between the two can be regarded as a fixed connection. It is mainly made of 20mm thick steel plate and has the same shape as the upper flange plate. Its function is to protect the upper rubber seismic isolation bearing and bear and transfer the load of the upper structure.

[0045] Bolt hole 4 is located on the upper and lower flange plates and the lower support of the rubber seismic isolation bearing. The fastening bolt is passed through the bolt hole of the upper flange plate and connected to the steel reinforcement of the upper support to form a whole; the fastening bolt is passed through the bolt hole of the lower flange plate and inserted into the bolt hole of the lower support to form a whole.

[0046] The seismic isolation pier 5 is a reinforced concrete structure, part of the building foundation, located directly above the pier cap, and is used to provide a platform for the installation of rubber seismic isolation bearings.

[0047] The isolation layer floor 6 is a construction platform surface formed by pouring after the ground beam is backfilled, providing an operating surface for pouring the lower isolation support, installing rubber isolation bearings, and constructing the superstructure.

[0048] The ball joint support 7, also known as the universal spherical hinge support, is a pear-shaped component that is thicker at the bottom and thinner at the top. It is embedded in the seismic isolation layer floor and can rotate 360° horizontally along its center line. It can also swing vertically along its center line by a certain arc. The upper end has an opening for the elastic steel cable to pass through.

[0049] The elastic steel cable 8 is a steel cable with a certain degree of elasticity. One end passes through the upper opening of the ball joint bearing, and the other end passes through the pull ring on the lower edge of the upper flange plate of the rubber seismic isolation bearing. Its function is to apply a force opposite to the horizontal displacement of the rubber seismic isolation bearing through the elastic steel cable when the rubber seismic isolation bearing undergoes horizontal displacement, thereby reducing the horizontal displacement of the building and achieving the seismic resistance effect.

[0050] Fastening bolt 9 is a connecting component that connects the rubber seismic isolation bearing to the upper and lower seismic isolation piers; it is generally a high-strength bolt.

[0051] Spring 10 is made of high-strength material and has a large elastic modulus. It is installed between adjacent rubber seismic isolation bearings and between the upper seismic isolation support beam and the seismic isolation layer floor. Its function is to limit the horizontal displacement of the rubber seismic isolation bearings and the upper seismic isolation support beam, and to disperse the horizontal force of the seismic load, thereby achieving the effect of seismic resistance.

[0052] The pull ring 11 is installed on the lower edge of the flange plate of the rubber seismic isolation bearing, the seismic isolation layer floor, both sides of the seismic isolation upper support beam, and the ground. It is made of metal material and its function is to connect the rubber seismic isolation bearing to the seismic isolation layer floor through "pull ring-elastic steel cable-spherical hinge bearing", connect the seismic isolation upper support beam to the seismic isolation layer floor through "pull ring-spring-pull ring", and connect the seismic isolation upper support beam to the damper through "pull ring-hanging chain".

[0053] The damper 12 is a long strip-shaped component with a damping device inside. Its upper surface is connected to the lower surface of the seismic isolation upper support beam through a "chain-ring". Its lower surface is connected to the ground of the seismic isolation layer through a tie rod. Its function is to apply a force opposite to the horizontal displacement of the building when the seismic load causes the building to move horizontally, thereby reducing the horizontal displacement of the building and achieving the seismic resistance effect.

[0054] The suspension chain 13 is made of metal rings connected in series, and its function is to connect the damper and the connecting beam of the seismic isolation upper support;

[0055] The lower end of the tie rod 14 is connected to the ground of the seismic isolation layer through a hinge support, allowing it to swing within a certain range. The upper end is connected to the lower surface of the damper, and the upper and lower ends are connected by a spring, giving the tie rod a certain degree of flexibility. Its function is to apply a force opposite to the direction of the horizontal displacement of the building through the contraction of the tie rod itself when the seismic load causes the building to move horizontally, thereby reducing the horizontal displacement of the building and achieving the seismic resistance effect.

[0056] The upper seismic isolation pier 15 is a reinforced concrete structure and belongs to the main building part. It is generally located under the column and directly above the lower seismic isolation pier. Its vertical projection size is the same as that of the lower seismic isolation pier.

[0057] The seismic isolation upper support beam 16 is a reinforced concrete structure and belongs to the main body of the building. It is generally a single-story foundation slab structural beam that connects the seismic isolation upper support to the single-story foundation slab.

[0058] The construction method of the distributed composite seismic isolation device system based on rubber seismic isolation bearings according to embodiments of the present invention includes the following steps:

[0059] Preparation: During the foundation construction phase, after pouring the concrete for the ground beams and foundation caps, backfill and compact the soil between the ground beams to prepare for pouring the seismic isolation layer. Extending approximately 50cm outwards from the positioning axis of the lower seismic isolation pier 5, and extending approximately 50cm to both sides from the vertical projection line of the upper seismic isolation pier connecting beam 16 on the seismic isolation layer 6, pre-embed the ball hinge bearing 7 and the tie ring 11 into the seismic isolation layer 6. Simultaneously, pre-embed the connector of the tie rod 14 at the location directly below the lower surface of the upper seismic isolation pier connecting beam 16 on the corresponding location in the seismic isolation layer 6, forming the tie point of the seismic resistance system. Finally, pour the seismic isolation layer 6, providing an operating surface for pouring the lower seismic isolation pier 5, installing the rubber seismic isolation bearing 1, and constructing the superstructure.

[0060] Installation of seismic isolation devices: After the construction of the seismic isolation layer 6 is completed, the steel reinforcement of the seismic isolation lower support 5 is washed and cleaned, and then the formwork is erected and the seismic isolation lower support 5 is poured. The bolt holes 4 on the upper surface of the seismic isolation lower support 5 are cleaned. The rubber seismic isolation bearing 1 is transported to the seismic isolation lower support 5 by trailer or lifting machinery, so that the bolt holes 4 on the lower flange plate 3 of the rubber seismic isolation bearing 1 are aligned with the bolt holes 4 on the upper surface of the seismic isolation lower support 5. After installation, the fastening bolts 9 are tightened. The rubber seismic isolation bearing 1 on the same seismic isolation lower support 5 is installed in sequence.

[0061] On the outside of the rubber seismic isolation bearing 1, the lower end of the elastic steel cable 8 passes through the upper opening of the ball joint bearing 7, which is pre-embedded in the seismic isolation layer 6. The upper end of the elastic steel cable 8 passes through the pull ring 11 on the lower edge of the upper flange plate 2 of the rubber seismic isolation bearing 1, connecting the rubber seismic isolation bearing 1 and the seismic isolation layer 6 through "pull ring 11—elastic steel cable 8—ball joint bearing 7". On the inside of the rubber seismic isolation bearing 1, the spring 10 passes through the pull ring 11 on the lower edge of the upper flange plate 2 of two adjacent rubber seismic isolation bearings 1, connecting the two adjacent rubber seismic isolation bearings 1.

[0062] Superstructure construction: After the rubber seismic isolation bearing 1 is installed, a prefabricated steel cage for the upper seismic isolation pier 15 is installed above the upper flange plate 2 of the rubber seismic isolation bearing 1, and then enclosed with formwork. The superstructure is then formed by casting: the upper seismic isolation pier 15 and the upper seismic isolation pier connecting beam 16. Before casting the upper seismic isolation pier connecting beam 16, tie rings 11 are pre-embedded on both sides and the bottom surface of the upper seismic isolation pier connecting beam 16 as tie points.

[0063] Complete the seismic resistance device: After the superstructure is poured, and the concrete strength reaches the construction requirements, remove the formwork and clean the sides and bottom of the pre-embedded pull rings 11 of the upper support beam 16. Pass one end of the spring 10 through the pre-embedded pull rings 11 on both sides of the upper support beam 16, and the other end through the pull ring 11 pre-embedded in the seismic isolation layer 6. Connect the upper support beam 16 and the seismic isolation layer 6 through "pull ring 11—spring 10—pull ring 11". Install the lower end of the tie rod 14 at the location corresponding to the seismic isolation layer 6 directly below the lower surface of the upper support beam 16. Connect the upper end of the tie rod 14 to the lower surface of the damper 12. The upper surface of the damper 12 is connected to the lower end of the suspension chain 13, and the upper end of the suspension chain 13 is connected to the pull ring 11 embedded in the bottom surface of the seismic isolation upper support beam 16. The seismic isolation upper support beam 16 and the seismic isolation layer floor 6 are connected through the "pull ring 11-suspension chain 13-damper 12-pull rod 14" to form a complete seismic resistance system.

[0064] Device principle: When an earthquake occurs, the seismic load is transferred from the ground to the building foundation, and the seismic resistance device system begins to work under stress.

[0065] Since earthquake damage to building structures is mainly caused by horizontal loads, when the rubber isolation bearing 1 is subjected to horizontal seismic loads, the rubber layers in its internal structure have a damping effect. The multiple rubber layers resist the horizontal displacement caused by the horizontal seismic loads, reducing the displacement of the superstructure and lowering the possibility of structural damage.

[0066] Adjacent rubber seismic isolation bearings 1 are connected by springs 10, which reduces the relative displacement of adjacent rubber seismic isolation bearings 1 and maintains stability.

[0067] The rubber seismic isolation bearing 1 is adjacent to the seismic isolation layer 6 via an elastic steel cable 8, and the upper seismic isolation support beam 16 is connected to the seismic isolation layer 6 via a spring 10. The elastic steel cable 8 and the spring 10 respectively provide forces opposite to the horizontal displacement direction of the rubber seismic isolation bearing 1 and the upper seismic isolation support beam 16, thereby restricting the horizontal displacement of the rubber seismic isolation bearing 1 and the upper seismic isolation support beam 16.

[0068] In addition, the damper 12, the chain 13, and the tie rod 14 connect the upper support beam 16 of the seismic isolation layer to the ground 6 of the seismic isolation layer. The damper also provides a force opposite to the horizontal displacement direction of the upper support beam 16 of the seismic isolation layer, thus limiting the horizontal displacement of the upper support beam 16 of the seismic isolation layer.

[0069] The device as a whole effectively limited the displacement of the building structure, reduced the damage caused by the earthquake, and ensured the safety of the building structure.

[0070] This invention utilizes small-sized rubber seismic isolation bearings to reduce installation and replacement difficulty. Adjacent rubber seismic isolation bearings are connected by springs, and the bearings are connected to the isolation layer floor via elastic steel cables, thereby enhancing the seismic resistance of the small-sized bearings. Dampers are applied to the connecting beams of the upper support piers of the seismic isolation system to improve the structure's seismic resistance. The system employs flexible connections such as springs, elastic steel cables, and tie rods to ensure seismic resistance while also possessing self-healing capabilities, reducing the frequency of subsequent maintenance and repairs, and lowering maintenance costs. The device and construction method employed in this invention effectively reduce the input of materials, manpower, and machinery, shorten the construction period, and save costs.

[0071] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A distributed composite seismic isolation device system based on rubber seismic isolation bearings, characterized in that, include: Rubber seismic isolation bearing (1), upper flange plate (2), lower flange plate (3), bolt holes (4), seismic isolation lower support (5), seismic isolation layer floor (6), ball joint bearing (7), elastic steel cable (8), fastening bolt (9), spring (10), pull ring (11), damper (12), chain (13), tie rod (14), seismic isolation upper support (15), seismic isolation upper support connecting beam (16); wherein: Four rubber seismic isolation bearings (1) are installed on the lower seismic isolation pier (5). The rubber seismic isolation bearings (1) are connected to the lower seismic isolation pier (5) through a lower flange plate (3) with a ring of bolt holes (4) at the bottom. The rubber seismic isolation bearings (1) are connected to the upper seismic isolation pier (15) through an upper flange plate (2) with a ring of bolt holes (4) at the top. Fastening bolts (9) are installed in the bolt holes (4). Adjacent rubber seismic isolation bearings (1) are connected by springs (10); a ring of eight ball joint bearings (7) is pre-embedded around the seismic isolation lower support (5) on the seismic isolation layer floor (6), and the outer edge of the upper flange plate (2) is connected to the ball joint bearings (7) by elastic steel cables (8). The upper support beam (16) of the seismic isolation pier is set perpendicular to the upper support pier (15). Multiple symmetrically arranged springs (10) are set on both sides of the upper support beam (16). The springs (10) are fixed to the seismic isolation layer floor (6) by pull rings (11). Multiple dampers (12) are set at the lower part of the upper support beam (16). The upper part of the dampers (12) is fixed to the lower part of the upper support beam (16) by a hanging chain (13). The lower part of the dampers (12) is fixed to the seismic isolation layer floor (6) by a tie rod (14).

2. The decentralized composite seismic isolation device system based on rubber seismic isolation bearings according to claim 1, characterized in that, The internal structure of the rubber seismic isolation bearing (1) is composed of repeated stacking of "steel plate - rubber - steel plate - rubber", with a lead core perpendicular to the direction of the steel plate at the center.

3. The decentralized composite seismic isolation device system based on rubber seismic isolation bearings according to claim 1, characterized in that, The upper flange plate (2) and the lower flange plate (3) are integral components with the rubber seismic isolation bearing (1), made of 20mm thick steel plate, and are square or round.

4. The decentralized composite seismic isolation device system based on rubber seismic isolation bearings according to claim 1, characterized in that, The seismic isolation pier (5) is a reinforced concrete structure and belongs to the building foundation. It is located directly above the pier cap and is used to provide a platform for the installation of rubber seismic isolation bearings (1). The seismic isolation layer floor (6) is a construction platform surface formed by pouring after backfilling the ground beam. It provides an operating surface for pouring the seismic isolation pier (5), installing the rubber seismic isolation bearings (1), and constructing the superstructure.

5. The decentralized composite seismic isolation device system based on rubber seismic isolation bearings according to claim 1, characterized in that, The upper seismic isolation pier (15) is a reinforced concrete structure, belonging to the main building part, located under the column, directly above the lower seismic isolation pier (5), and its vertical projection size is the same as that of the lower seismic isolation pier (5); the upper seismic isolation pier connecting beam (16) is a reinforced concrete structure, belonging to the main building part, and is a first-floor slab structural beam that connects the upper seismic isolation pier (15) to the first-floor slab.

6. The decentralized composite seismic isolation device system based on rubber seismic isolation bearings according to claim 1, characterized in that, The ball joint support (7) is a pear-shaped component that is thicker at the bottom and thinner at the top. It is embedded in the seismic isolation layer floor (6) and can rotate horizontally 360° along its center line. It can also swing vertically along its center line to a certain arc. The upper end has an opening for the elastic steel cable (8) to pass through.

7. The decentralized composite seismic isolation device system based on rubber seismic isolation bearings according to claim 6, characterized in that, The elastic steel cable (8) is a steel cable with a certain degree of elasticity. One end passes through the upper opening of the ball joint support (7), and the other end passes through the lower edge of the upper flange plate (2) of the rubber vibration isolation support (1).

8. The decentralized composite seismic isolation device system based on rubber seismic isolation bearings according to claim 1, characterized in that, The damper (12) is a long strip-shaped component with a damping device inside. Its upper surface is connected to the lower surface of the upper support beam of the seismic isolation pier by a chain (13), and its lower surface is connected to the ground floor of the seismic isolation layer (6) by a tie rod (14).

9. The decentralized composite seismic isolation device system based on rubber seismic isolation bearings according to claim 1, characterized in that, The suspension chain (13) is made of metal rings connected in series. Its function is to connect the damper (12) and the upper support beam (16) of the seismic isolation pier. The lower end of the tie rod (14) is connected to the ground of the seismic isolation layer (6) through a hinge support, and can swing within a certain range. The upper end is connected to the lower surface of the damper (12). The upper and lower ends are connected by a spring, so that the tie rod (14) has a certain degree of flexibility.

10. A construction method for a distributed composite seismic isolation device system based on rubber seismic isolation bearings, characterized in that, The method includes the following steps: Preparation: During the foundation construction phase, after pouring the concrete for the ground beams and foundations, backfill and compact the soil between the ground beams to prepare for pouring the seismic isolation layer. Extend 50cm outward from the positioning axis of the lower seismic isolation pier and 50cm to both sides from the vertical projection line of the upper seismic isolation pier connecting beam on the seismic isolation layer. Embed the ball hinge bearings and tie rings into the seismic isolation layer. Simultaneously, embed the tie rod connectors at the corresponding location on the seismic isolation layer directly below the lower surface of the upper seismic isolation pier connecting beam to form the tie point of the seismic resistance system. Finally, pour the seismic isolation layer to provide an operating surface for pouring the lower seismic isolation piers, installing rubber seismic isolation bearings, and constructing the superstructure. Installation of seismic isolation devices: After the construction of the seismic isolation layer floor is completed, the steel bars of the seismic isolation lower support are washed and cleaned, and then the formwork is erected and the seismic isolation lower support is poured. The bolt holes on the upper surface of the seismic isolation lower support are cleaned, and the rubber seismic isolation bearings are transported to the seismic isolation lower support using a trailer or lifting machinery, so that the bolt holes on the lower flange plate of the rubber seismic isolation bearing are aligned with the bolt holes on the upper surface of the seismic isolation lower support. After installation, the fastening bolts are tightened. The rubber seismic isolation bearings on the same seismic isolation lower support are installed in sequence. On the outside of the rubber seismic isolation bearing, the lower end of the elastic steel cable is passed through the upper opening of the ball joint bearing pre-embedded in the seismic isolation layer, and the upper end of the elastic steel cable is passed through the pull ring on the lower edge of the upper flange plate of the rubber seismic isolation bearing, connecting the rubber seismic isolation bearing to the seismic isolation layer through "pull ring - elastic steel cable - ball joint bearing"; on the inside of the rubber seismic isolation bearing, the spring is passed through the pull ring on the lower edge of the upper flange plate of two adjacent rubber seismic isolation bearings, connecting the two adjacent rubber seismic isolation bearings. Superstructure construction: After the rubber seismic isolation bearings are installed, a prefabricated seismic isolation upper support reinforcement cage is installed above the upper flange plate of the rubber seismic isolation bearings and sealed with formwork. The superstructure is then formed by casting: seismic isolation upper support and seismic isolation upper support connecting beam. Before casting the seismic isolation upper support connecting beam, tie rings are pre-embedded on both sides and the bottom surface of the seismic isolation upper support connecting beam as tie points. Complete the seismic resistance system: After the superstructure is poured and the concrete strength reaches the construction requirements, remove the formwork and clean the pre-embedded pull rings on both sides and the bottom surface of the seismic isolation upper support beam. Pass one end of the spring through the pre-embedded pull rings on both sides of the seismic isolation upper support beam, and the other end through the pull ring pre-embedded in the seismic isolation layer floor. Connect the seismic isolation upper support beam and the seismic isolation layer floor through "pull ring-spring-pull ring". Install the lower end of the tie rod at the corresponding location in the seismic isolation layer floor directly below the lower surface of the seismic isolation upper support beam. Connect the upper end of the tie rod to the lower surface of the damper. Connect the upper surface of the damper to the lower end of the suspension chain. Connect the upper end of the suspension chain to the pre-embedded pull ring on the bottom surface of the seismic isolation upper support beam. Connect the seismic isolation upper support beam and the seismic isolation layer floor through "pull ring-suspension chain-damper-tie rod" to form a complete seismic resistance system.

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