Shock absorption and isolation structure of anti-seismic building

Abstract

The invention relates to the technical field of building design, and discloses a shock absorption and isolation structure of an anti-seismic building, comprising: a protection box for fixing a bridge foundation and providing mounting positions for other components; the shock isolation assembly is installed on one side of the bridge foundation and used for reducing vibration transmitted to a building; the damping assembly is installed in an inner cavity of the shock isolation assembly, and a magnetic field is formed through electrification to increase swing damping of the balance weight ball; the damping assembly comprises a shielding ring, the shielding ring is installed in an inner cavity of the protection box, the inner wall of the shielding ring is sleeved with multiple sets of electromagnetic coils, and one end of each electromagnetic coil is connected with a power supply cable. And through the damping effect of the electromagnetic coil and the counterweight ball, the absorption efficiency of vibration energy is remarkably improved. The magnetic field generated by the electromagnetic coils effectively inhibits swinging of the counterweight ball and dissipates vibration energy, the multiple sets of electromagnetic coils adjust the magnetic field intensity in real time, the damping effect is optimized according to the vibration intensity, impact of energy concentration on the structure is avoided, and therefore damage of vibration to a building is effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of building design, in particular to a shock-absorbing and seismic-isolating structure of an earthquake-resistant building. Background Art

[0002] Earthquake-resistant buildings refer to building structures that use special design and technical measures to improve the building's ability to resist earthquake damage. With the frequent occurrence of earthquakes around the world, especially in countries and regions with high earthquake risk, the earthquake resistance of buildings has become a crucial part of building design and construction. In recent years, scientists and engineers have continuously developed new shock absorption and seismic isolation technologies to reduce earthquake damage to buildings, improve the earthquake resistance of buildings, and protect life and property.

[0003] As an important transportation hub, bridges have extremely strict requirements for seismic performance. Compared with ordinary buildings, the long span structure and high flexibility of bridges make them extremely vulnerable to damage in earthquakes. The vibration of the bridge body not only affects the safety of the bridge itself, but may also cause traffic interruptions and even endanger lives. Therefore, the seismic design of bridges is particularly important in the field of civil engineering.

[0004] Existing bridge seismic resistance technologies usually use methods such as foundation reinforcement or bridge material strengthening, but these methods have several significant shortcomings:

[0005] Lack of shock absorption function: The design of many traditional bridges relies on strengthening the bearing capacity of bridge piers and bridge foundations, but does not take into account the use of shock absorption devices, resulting in the inability to effectively disperse and absorb earthquake energy. When earthquake waves act directly on the bridge foundation and bridge deck, it often causes bridge displacement, pier damage and even bridge collapse.

[0006] Limited seismic isolation technology: Some modern bridges use base seismic isolation technology, such as installing rubber bearings or sliding bearings to isolate vibrations. However, these seismic isolation technologies have certain limitations when facing multi-directional seismic waves, especially they cannot effectively deal with vertical vibrations, the seismic isolation effect is limited, and it is easy to cause uneven structural deformation.

[0007] Insufficient damping technology: Although existing damper technology can absorb vibration energy to a certain extent, most existing dampers rely on the energy absorption characteristics of a single material, such as viscous dampers or friction dampers, and cannot be adjusted in real time according to the intensity of the earthquake. The damping efficiency is relatively fixed. For earthquake waves of different intensities and frequencies, these fixed dampers have limited adaptability and it is difficult to provide the best shock absorption effect.

[0008] To this end, those skilled in the art provide a shock-absorbing and seismic isolation structure for an earthquake-resistant building to solve the problems raised in the above-mentioned background technology. Summary of the invention

[0009] In view of the deficiencies in the prior art, the present invention provides a shock-absorbing and seismic isolation structure for an earthquake-resistant building, which solves the problems in the prior art of vibration energy transmission, poor effect of fixed dampers and insufficient multi-directional seismic isolation capability.

[0010] To achieve the above objectives, the present invention is implemented through the following technical solutions: A seismic isolation structure for seismic resistant buildings, comprising:

[0011] A protective box, used to fix the bridge foundation and provide a location for mounting other components;

[0012] Seismic isolation components, installed on one side of the bridge foundation, are used to reduce the transmission of vibrations to the building;

[0013] The damping component is installed in the inner cavity of the seismic isolation component, and forms a magnetic field by energizing to increase the swing damping of the weight ball;

[0014] The damping assembly includes a shielding ring, which is installed in the inner cavity of the protection box, and the inner wall of the shielding ring is sleeved with multiple groups of electromagnetic coils, and one end of the electromagnetic coil is connected to a power supply cable, which is used to charge the electromagnetic coil through an external power supply to form a magnetic field when in use;

[0015] The primary shock-absorbing assembly is installed on the inner wall of the protection box to buffer the initial vibration;

[0016] The secondary shock absorbing assembly is installed on one side of the primary shock absorbing assembly to buffer the vibration again.

[0017] Preferably, the seismic isolation assembly includes a first seismic isolation pad, which is installed on one side of the protection box and is used to buffer the horizontal vibration of the bridge foundation. The first seismic isolation pad is made of rubber material, and a supporting component is installed on one side of the seismic isolation assembly.

[0018] Preferably, a load-bearing column is fixedly connected to the top of the bridge foundation, and a plurality of seismic isolation connection pads are installed on the top of the load-bearing column for connecting the bridge deck and isolating the bridge deck.

[0019] Preferably, the supporting component includes a plurality of second seismic isolation pads, the second seismic isolation pads are installed on one side of the bridge foundation, a plurality of damping supports are installed on one side of the second seismic isolation pads, and the damping supports are arranged inside the protection box.

[0020] Preferably, the counterweight ball is connected to a steel chain at the bottom of the seismic isolation connection pad and is suspended in the inner cavity of the bridge foundation.

[0021] Preferably, the first-level shock-absorbing assembly is installed on one side of the second-level shock-absorbing assembly, and includes an extrusion rod. A plurality of the extrusion rods are installed on one side of the second seismic isolation pad, and are used to push the first slider connected to the extrusion rod to slide on the top of the limit block. A push rod is fixed to one side of the first slider, and a first spring is provided on the outer wall of the first slider, so that preliminary shock absorption is achieved by damping the first slider with the first spring.

[0022] Preferably, the secondary shock absorbing assembly includes a locking block, a plurality of the locking blocks are installed in the inner cavity of the protective box, one side of the locking block is fixed to the bottom of the limit block, a plurality of first sliding grooves are opened on one side of the locking block for guiding the movement of the skateboard connected to the push rod, and a connecting rod is hinged on one side of the skateboard.

[0023] Preferably, the inner cavity of the limit block is provided with a second slide groove, and a second slider and an auxiliary plate are slid in the inner cavity of the second slide groove. A mounting block is installed on one side of the bottom of the limit block for fixing the damper and always limiting the sliding position of the second slider in the inner cavity of the second slide groove.

[0024] Preferably, a second spring is installed in the inner cavity of the auxiliary plate to increase the movement resistance of the compression rod.

[0025] Preferably, one side of the connecting rod is hinged to one side of the limiting block.

[0026] Working principle: First, install a seismic isolation assembly on one side of the bridge foundation. The seismic isolation assembly is used to reduce the transmission of vibration to the building. A damping assembly is set in the inner cavity of the seismic isolation assembly. The damping assembly forms a magnetic field by energizing, thereby increasing the swing damping of the counterweight ball. The damping assembly includes a shielding ring, which is installed in the inner cavity of the protection box. The inner wall of the shielding ring is provided with multiple sets of electromagnetic coils. The electromagnetic coils are connected to an external power supply through a power supply cable to form a magnetic field to enhance the damping effect.

[0027] On this basis, a primary shock-absorbing assembly is provided for preliminary vibration buffering. The primary shock-absorbing assembly is installed on the inner wall of the protection box. The primary shock-absorbing assembly realizes the preliminary vibration buffering function through the extrusion rod, the first slider and the first spring. Next, a secondary shock-absorbing assembly is installed on one side of the primary shock-absorbing assembly for further vibration buffering. The secondary shock-absorbing assembly includes a locking block, a first slide groove and a connecting rod, which are used to guide and limit the movement of the push rod and the slide plate to ensure that the vibration is gradually attenuated.

[0028] The seismic isolation assembly further includes a first seismic isolation pad, which is installed on one side of the protection box and is used to buffer the horizontal vibration of the bridge foundation. The first seismic isolation pad is made of rubber material to improve the buffering effect. A support component is also installed on one side of the seismic isolation assembly. The support component includes a plurality of second seismic isolation pads, which are installed on one side of the bridge foundation and enhance the shock absorption effect through a damping supporter. The damping supporter is located inside the protection box to provide further support for the overall system.

[0029] The top of the bridge foundation is fixedly connected with a load-bearing column, and multiple seismic isolation pads are installed on the top of the load-bearing column to connect the bridge deck and achieve seismic isolation. The counterweight ball is suspended in the inner cavity of the bridge foundation through a steel chain, and the counterweight ball is connected to the bottom of the seismic isolation pad to enhance the damping effect during swinging.

[0030] In the primary shock-absorbing assembly, the extrusion rod pushes the first slider to slide on the top of the limit block, the push rod is fixed on one side of the first slider, and the first spring is sleeved on the outer wall of the first slider. The damping effect of the spring achieves preliminary shock absorption. The secondary shock-absorbing assembly guides and controls the slider through the locking block. The inner cavity of the limit block is provided with a second slide groove, in which the second slider and the auxiliary plate slide. The mounting block is fixed at the bottom of the limit block to fix the damper and limit the sliding position of the second slider. The second spring is installed in the inner cavity of the auxiliary plate to further enhance the resistance of the compression rod.

[0031] The connecting rod is hinged on one side of the limit block to achieve linkage and vibration buffering of the entire structure, ensuring that the multi-stage shock absorption system effectively attenuates vibration transmission.

[0032] The present invention provides a shock-absorbing and seismic-isolating structure for earthquake-resistant buildings. It has the following beneficial effects:

[0033] 1. The present invention realizes multi-stage shock absorption through primary and secondary shock absorption components, which can absorb and buffer earthquake energy layer by layer. The primary shock absorption component absorbs initial vibration through extrusion rods, sliders and springs, while the secondary shock absorption component performs secondary buffering on residual vibration through locking blocks, slide plates and dampers. The multi-stage structural design ensures that the vibration energy is attenuated step by step, effectively reducing the impact force transmitted to the building structure by vibration, thereby improving the overall seismic performance of the building, and is suitable for earthquake environments of different intensities.

[0034] 2. The present invention significantly improves the absorption efficiency of vibration energy through the damping effect of the electromagnetic coil and the counterweight ball. The magnetic field generated by the electromagnetic coil effectively suppresses the swing of the counterweight ball and dissipates the vibration energy. Multiple sets of electromagnetic coils adjust the magnetic field strength in real time and optimize the damping effect according to the vibration intensity. This design ensures that the vibration energy is gradually dissipated during the transmission process, avoiding the impact of energy concentration on the structure, thereby effectively reducing the damage to the building caused by vibration.

[0035] 3. The present invention adopts a modular structure to ensure the stability and coordinated work of each shock-absorbing component. The primary and secondary shock-absorbing components disperse the vibration stress through the linkage of push rods and connecting rods, thereby improving the stability of the overall structure. The electromagnetic coil can intelligently adjust the magnetic field strength, adapt to different vibration conditions, and optimize the shock-absorbing effect. This design enhances the ability of the structure to cope with different earthquake environments and ensures the safety of the building. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A perspective view of the present invention;

[0037] Figure 2 It is a schematic diagram of the cross-sectional structure of the protection box of the present invention;

[0038] Figure 3 It is a schematic diagram of the cross-sectional structure of a load-bearing column of the present invention;

[0039] Figure 4 It is a schematic diagram of the explosion of the first seismic isolation pad structure of the present invention;

[0040] Figure 5 It is a schematic diagram of the structure of the second seismic isolation pad of the present invention;

[0041] Figure 6 It is a schematic diagram of the cross-sectional structure of the limit block of the present invention;

[0042] Figure 7 It is a schematic diagram of the cross-sectional structure of the auxiliary plate of the present invention.

[0043] Among them, 1. protection box; 2. first isolation pad; 3. bridge foundation; 4. load-bearing column; 5. isolation connection pad; 6. second isolation pad; 7. damping support; 8. steel chain; 9. counterweight ball; 10. shielding ring; 11. electromagnetic coil; 12. power supply cable; 13. extrusion rod; 14. limit block; 15. locking block; 16. first slide groove; 17. first slider; 18. push rod; 19. first spring; 20. slide plate; 21. connecting rod; 22. mounting block; 23. damper; 24. second slide groove; 25. second slider; 26. compression rod; 27. auxiliary plate; 28. second spring. DETAILED DESCRIPTION

[0044] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] An embodiment of the present invention provides a seismic isolation structure for an earthquake-resistant building, comprising:

[0046] Please see attached Figure 1 , a protection box 1 is used to fix the bridge foundation 3 and provide a location for installing other components;

[0047] Specifically, the protection box 1 serves as the basic support part of the entire shock-absorbing and seismic isolation structure, and plays the role of bearing and protecting each seismic isolation component and damping component. Its design structure is sturdy, capable of bearing the weight of the bridge foundation 3, and effectively fixing the bridge foundation 3 in a predetermined position to ensure the stability of the overall structure when an earthquake occurs. At the same time, the protection box 1 provides multiple inner cavities and external mounting surfaces for accommodating and installing key components such as seismic isolation components and damping components, thereby realizing functional integration.

[0048] During use, the protection box 1 is tightly connected to the bridge foundation 3, which can ensure the structural strength between the bridge foundation 3 and other installation components. Through precise layout and design, the protection box 1 not only fixes the bridge foundation 3, but also provides necessary space and support for various seismic isolation components installed inside and outside it. The outer side of the protection box 1 is used to install the first seismic isolation pad 2, which is responsible for buffering horizontal vibrations, and the interior of the protection box 1 is also provided with space for installing damping supports 7, which can effectively absorb vibration energy and provide secondary buffering for the overall structure.

[0049] In addition, the interior of the protection box 1 provides installation positions for the shielding ring 10 and the electromagnetic ring 11 for the damping components, and these components can form a magnetic field through the electromagnetic principle to achieve a damping effect on the swing of the counterweight ball 9. Through the design of the protection box 1, all components can be closely matched to ensure the efficient operation of the shock-absorbing and seismic isolation system under vibration conditions, improve the earthquake resistance of the building and reduce the damage of vibration to the upper structure.

[0050] Please see attached Figure 2 -Attached Figure 4 , a seismic isolation component is installed on one side of the bridge foundation 3 to reduce the transmission of vibration to the building; the seismic isolation component includes a first seismic isolation pad 2, which is installed on one side of the protection box 1 to buffer the horizontal vibration of the bridge foundation 3. The first seismic isolation pad 2 is made of rubber, and a supporting component is installed on one side of the seismic isolation component.

[0051] The top of the bridge foundation 3 is fixedly connected with a load-bearing column 4, and a plurality of seismic isolation connection pads 5 are installed on the top of the load-bearing column 4 for connecting the bridge deck and isolating the bridge deck. The supporting component includes a plurality of second seismic isolation pads 6, which are installed on one side of the bridge foundation 3, and a plurality of damping supports 7 are installed on one side of the second seismic isolation pad 6, and the damping supports 7 are arranged inside the protection box 1.

[0052] Specifically, the seismic isolation assembly includes a first seismic isolation pad 2, which is installed on one side of the protection box 1 and is specifically used to buffer the horizontal vibration of the bridge foundation 3. Since horizontal vibration during an earthquake is highly destructive to the building structure, the first seismic isolation pad 2 can effectively absorb vibration energy and reduce the impact of the earthquake on the bridge foundation 3 through its excellent rubber material. The rubber material has the characteristics of good elasticity and strong durability, so the seismic isolation performance can be maintained without attenuation in multiple earthquake events.

[0053] Support components are also installed on one side of the seismic isolation assembly, which are used to provide additional structural support and enhance the seismic isolation effect. The support components include a plurality of second seismic isolation pads 6, which are installed on one side of the bridge foundation 3. In conjunction with the first seismic isolation pads 2, the second seismic isolation pads 6 can further reduce the vibration transmission in the horizontal and vertical directions. These second seismic isolation pads 6 play a key secondary protection role in the structure, especially when the seismic waves are strong, they can further disperse and absorb the energy transmitted to the bridge foundation 3.

[0054] The top of the bridge foundation 3 is fixedly connected with a load-bearing column 4, which is the main supporting part of the building structure and must have good earthquake resistance. In order to enhance the earthquake resistance of the load-bearing column 4, a plurality of seismic isolation pads 5 are installed on the top of the load-bearing column 4, which are used to connect the bridge deck and effectively isolate seismic waves. The seismic isolation pads 5 adapt to vibrations through elastic deformation, and at the same time transmit vibrations to the counterweight structure, and reduce the transmission of vibrations to the bridge deck through a series of mechanical conversions.

[0055] In addition, a plurality of damping supports 7 are installed on one side of the second seismic isolation pad 6. The damping supports 7 are arranged inside the protection box 1 to further absorb the residual energy in the vibration. The damping supports 7 provide a function similar to "buffering" when an earthquake occurs through their damping materials and mechanical structures, so that the vibration energy is gradually attenuated during the transmission process, and finally the safety of the building structure is guaranteed. The reasonable layout and quantity setting of the damping supports 7 can be adjusted according to the structural characteristics of the building, so as to provide the most suitable protection effect in different types of earthquakes.

[0056] Please see attached Figure 3 -Attached Figure 5 , a damping component is installed in the inner cavity of the seismic isolation component, and forms a magnetic field by energizing to increase the swing damping of the weight ball 9;

[0057] The damping assembly includes a shielding ring 10, which is installed in the inner cavity of the protective box 1, and a plurality of groups of electromagnetic coils 11 are sleeved on its inner wall. One end of the electromagnetic coil 11 is connected to a power supply cable 12, which is used to charge the electromagnetic coil 11 through an external power supply to form a magnetic field when in use; the counterweight ball 9 is connected to the steel chain 8 at the bottom of the seismic isolation connection pad 5 and is suspended in the inner cavity of the bridge foundation 3, and the outer wall of the counterweight ball 9 is provided with a plurality of permanent magnets.

[0058] Specifically, the damping assembly includes a shielding ring 10, which is firmly mounted in the inner cavity of the protective box 1 and is used to fix and support the electromagnetic device. A plurality of groups of electromagnetic coils 11 are sleeved on the inner wall of the shielding ring 10, and these electromagnetic coils 11 are connected to an external power source through a power supply cable 12. In actual use, the external power supply charges the electromagnetic coil 11 through the power supply cable 12. When the current passes through the electromagnetic coil 11, the electromagnetic coil 11 will generate a magnetic field. The magnetic field interacts with other magnetic components in the system, especially during the swinging process of the counterweight ball 9. The presence of the magnetic field will inhibit its movement and increase the damping effect of the counterweight ball 9.

[0059] The counterweight ball 9 is suspended at the bottom of the seismic isolation connection pad 5 by a steel chain 8 and is in the inner cavity of the bridge foundation 3. When the building is affected by seismic waves, the bridge foundation 3 vibrates, which in turn causes the counterweight ball 9 to swing. Since there is a magnetic interaction between the magnetic field generated by the electromagnetic coil 11 and the counterweight ball 9, when the counterweight ball 9 swings, this interaction will effectively suppress the movement of the counterweight ball 9, thereby increasing the resistance during the swinging process. This damping effect can quickly attenuate the energy transmitted by the vibration and slow down the vibration amplitude of the entire building, especially in severe horizontal or vertical vibrations, which can greatly reduce the impact of vibration on the building superstructure.

[0060] In addition, the swing of the counterweight ball 9 is closely connected to the suspension structure of the seismic isolation connection pad 5 through the steel chain 8. The suspension design of the steel chain 8 allows the counterweight ball 9 to swing freely in multiple directions and can adapt to vibrations from different directions. When the building undergoes a large displacement during the vibration process, the electromagnetic coil 11 adjusts the magnetic field strength through the current to control the movement of the counterweight ball 9. As the current changes, the strength of the magnetic field also changes accordingly. Therefore, the damping force of the magnetic field on the counterweight ball 9 can be automatically adjusted according to the strength of the building's vibration, thereby achieving efficient vibration control.

[0061] The arrangement of multiple sets of electromagnetic coils 11 ensures that the system can provide continuous damping effect at different stages of vibration, and the design of the shielding ring 10 can not only enhance the structural stability of the electromagnetic coils 11, but also prevent the external magnetic field from interfering with the internal magnetic field of the system, thereby ensuring the accuracy and stability of the electromagnetic damping system. This seismic isolation principle achieved through electromagnetic damping, combined with the multi-directional swing design of the weighted ball 9, can not only improve the system's adaptability to complex vibrations, but also effectively reduce the transmission of vibration energy to the building's superstructure, thereby ensuring the overall safety and structural integrity of the building during an earthquake.

[0062] Overall, the damping assembly of the present invention achieves efficient seismic isolation and shock absorption effects of the building in an earthquake through the coordinated work of the shielding ring 10, the electromagnetic coil 11, the weighted ball 9 and the steel chain 8. The design is not only structurally reasonable, but also can accurately adjust the vibration through the electromagnetic control system, providing an intelligent shock absorption solution, so that the building has a stronger earthquake resistance in a vibration environment.

[0063] Please see attached Figure 6 -Attached Figure 7 , a first-level shock-absorbing component is installed on the inner wall of the protection box 1, and is used to buffer the initial vibration; the first-level shock-absorbing component is installed on one side of the second-level shock-absorbing component, including an extrusion rod 13, and multiple extrusion rods 13 are installed on one side of the second seismic isolation pad 6, which are used to push the first slider 17 connected to the extrusion rod 13 to slide on the top of the limit block 14. A push rod 18 is fixed to one side of the first slider 17, and a first spring 19 is provided on the outer wall of the first slider 17. The initial shock absorption is achieved by the damping of the first slider 17 by the first spring 19.

[0064] Specifically, the core components of the first-stage shock-absorbing assembly include an extrusion rod 13, and multiple extrusion rods 13 are symmetrically installed on one side of the second shock-absorbing pad 6. The function of the extrusion rod 13 is to push the first slider 17 connected to it to slide on the top of the limit block 14, thereby realizing the shock-absorbing function.

[0065] In actual operation, when the building is subjected to external vibration, the second seismic isolation pad 6 will first absorb and buffer part of the vibration energy. At the same time, the vibration is transmitted to the first slider 17 through the extrusion rod 13. The pushing action of the extrusion rod 13 causes the first slider 17 to slide along the surface of the limit block 14. In order to control the sliding speed and shock absorption effect of the slider, the outer wall of the first slider 17 is sleeved with a first spring 19. When the first slider 17 moves under the action of vibration, the first spring 19 will generate a reverse damping force, which effectively limits the rapid displacement of the slider, thereby achieving preliminary mitigation and absorption of the vibration.

[0066] At the same time, a push rod 18 is fixed to one side of the first slider 17. The push rod 18 serves as a transmission element between the slider and other shock-absorbing components to further optimize the transmission of force during the vibration process. The combination of the first slider 17 and the first spring 19 can effectively absorb vibration energy, and reduce the displacement amplitude of the slider through the compression and rebound of the spring, thereby reducing the impact of external vibration on the building infrastructure.

[0067] The working principle of the primary shock-absorbing assembly relies on the process of gradual transmission and absorption of vibration energy. When the extrusion rod 13 pushes the first slider 17 to move, the vibration energy is released and dissipated in stages through the damping force of the first spring 19, avoiding excessive impact force directly acting on the upper structure. The setting of the limit block 14 ensures the movement direction and range of the first slider 17, so that the primary shock-absorbing assembly can effectively control the vibration while maintaining the stability of the structure.

[0068] Please see attached Figure 6 -Attached Figure 7 , the secondary shock absorbing assembly is installed on one side of the primary shock absorbing assembly, and is used to buffer the vibration again. The secondary shock absorbing assembly includes a locking block 15, and multiple locking blocks 15 are installed in the inner cavity of the protection box 1. One side of the locking block 15 is fixed to the bottom of the limit block 14. One side of the locking block 15 is provided with multiple first slide grooves 16, which are used to guide the movement of the slide plate 20 connected to the push rod 18. One side of the slide plate 20 is hinged with a connecting rod 21. The inner cavity of the limit block 14 is provided with a second slide groove 24, and the inner cavity of the second slide groove 24 slides with a second slider 25 and an auxiliary plate 27. A mounting block 22 is installed on one side of the bottom of the limit block 14, which is used to fix the damper 23 and always limit the sliding position of the second slider 25 in the inner cavity of the second slide groove 24. The inner cavity of the auxiliary plate 27 is installed with a second spring 28, which is used to increase the movement resistance of the compression rod 26. One side of the connecting rod 21 is hinged to one side of the limit block 14.

[0069] Specifically, one of the core components of the secondary shock absorbing assembly is a locking block 15. Multiple locking blocks 15 are installed in the inner cavity of the protection box 1, and one side of the locking block 15 is fixed to the bottom of the limit block 14. The locking block 15 has a stable structure and is mainly used to support and fix the shock absorbing assembly and play a restraining role. Multiple first slide grooves 16 are provided on one side of the locking block 15 to guide the movement of the slide plate 20 connected to the push rod 18. The slide plate 20 can slide along the fixed track in the first slide groove 16 to ensure that the movement direction of the push rod 18 is controlled and stable.

[0070] A connecting rod 21 is hinged on one side of the slide plate 20. The connecting rod 21 is a connecting element between the slide plate 20 and the limit block 14, and can transmit the force generated during the movement. The hinge design of the connecting rod 21 allows the slide plate 20 to have a certain degree of freedom of movement when vibration occurs, and can not only react to the displacement of the push rod 18, but also reasonably distribute the force to other shock absorbing components, thereby achieving a multi-level buffering effect.

[0071] The inner cavity of the limit block 14 is provided with a second slide groove 24, which is used to accommodate and guide the movement of the second slider 25 and the auxiliary plate 27. The second slider 25 and the auxiliary plate 27 slide in the second slide groove 24, and undertake the second stage of shock absorption during the vibration transmission process. A mounting block 22 is also installed on one side of the bottom of the limit block 14, and the mounting block 22 is used to fix the damper 23. The damper 23 further reduces the possibility of vibration energy being transmitted to the upper structure by applying a damping force to the movement of the second slider 25.

[0072] In order to ensure the stability of the shock absorption effect, the movement of the second slider 25 is strictly controlled by the limiting device, and the mounting block 22 always limits the sliding position of the second slider 25 in the second slide groove 24. This design ensures that the slider will not produce excessive displacement during vibration, thereby maintaining the balance of the entire shock absorption system.

[0073] The inner cavity of the auxiliary plate 27 is provided with a second spring 28, which provides additional resistance when vibration occurs, and in particular, when the compression rod 26 moves, the second spring 28 can generate a reverse force to enhance the buffering effect. The combined structure of the auxiliary plate 27 and the second spring 28 further improves the secondary shock absorbing assembly's ability to absorb vibration energy, so that it can effectively disperse and dissipate energy when an earthquake occurs, reducing the impact on the building.

[0074] In addition, one side of the connecting rod 21 is hinged to one side of the limit block 14. Through the hinge design of the connecting rod 21, the entire shock-absorbing assembly can achieve flexible mechanical transmission in structure, ensuring that the vibration energy can be gradually dissipated through multiple paths. The close fit and reasonable arrangement between each structural component ensure the efficient operation of the secondary shock-absorbing assembly, which can cooperate with the primary shock-absorbing assembly to achieve a more superior multi-stage vibration buffering effect, ensuring the stability and safety of the building in a vibration environment.

[0075] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A seismic isolation structure for an earthquake-resistant building, characterized in that: include: A protective box (1) is used to fix the bridge foundation (3) and provide a location for installing other components; A seismic isolation assembly is installed on one side of the bridge foundation (3) to reduce the transmission of vibration to the building; A damping component is installed in the inner cavity of the seismic isolation component, and forms a magnetic field by energizing to increase the swing damping of the weight ball (9); The damping assembly comprises a shielding ring (10), the shielding ring (10) being installed in the inner cavity of the protection box (1), the inner wall of which is sleeved with a plurality of groups of electromagnetic coils (11), one end of the electromagnetic coil (11) being connected to a power supply cable (12) for charging the electromagnetic coil (11) through an external power supply to form a magnetic field when in use; A primary shock absorbing assembly, mounted on the inner wall of the protection box (1) and used to buffer initial vibration; The secondary shock absorbing assembly is installed on one side of the primary shock absorbing assembly to buffer the vibration again.

2. The seismic isolation structure of an earthquake-resistant building according to claim 1, characterized in that: The seismic isolation assembly comprises a first seismic isolation pad (2), which is installed on one side of the protection box (1) and is used to buffer the horizontal vibration of the bridge foundation (3). The first seismic isolation pad (2) is made of rubber material. A supporting component is installed on one side of the seismic isolation assembly.

3. The seismic isolation structure of an earthquake-resistant building according to claim 2, characterized in that: A load-bearing column (4) is fixedly connected to the top of the bridge foundation (3), and a plurality of seismic isolation connection pads (5) are installed on the top of the load-bearing column (4) for connecting the bridge deck and isolating the bridge deck.

4. The seismic isolation structure of an earthquake-resistant building according to claim 2, characterized in that: The supporting component comprises a plurality of second seismic isolation pads (6), the second seismic isolation pads (6) being installed on one side of the bridge foundation (3), a plurality of damping supports (7) being installed on one side of the second seismic isolation pads (6), and the damping supports (7) being arranged inside the protection box (1).

5. The seismic isolation structure of an earthquake-resistant building according to claim 1, characterized in that: The counterweight ball (9) is connected to a steel chain (8) at the bottom of the seismic isolation connection pad (5) and is suspended in the inner cavity of the bridge foundation (3).

6. The seismic isolation structure of an earthquake-resistant building according to claim 1, characterized in that: The first-stage shock-absorbing assembly is installed on one side of the second-stage shock-absorbing assembly, and comprises an extrusion rod (13). A plurality of the extrusion rods (13) are installed on one side of the second shock-isolating pad (6) and are used to push a first slider (17) connected to the extrusion rod (13) to slide on the top of the limit block (14). A push rod (18) is fixed on one side of the first slider (17). A first spring (19) is sleeved on the outer wall of the first slider (17). Preliminary shock absorption is achieved by damping the first slider (17) with the first spring (19).

7. The seismic isolation structure of an earthquake-resistant building according to claim 6, characterized in that: The secondary shock absorbing assembly comprises a locking block (15), a plurality of the locking blocks (15) are installed in the inner cavity of the protection box (1), one side of the locking block (15) is fixed to the bottom of the limit block (14), one side of the locking block (15) is provided with a plurality of first sliding grooves (16) for guiding the movement of a slide plate (20) connected to the push rod (18), and one side of the slide plate (20) is hinged with a connecting rod (21).

8. The seismic isolation structure of an earthquake-resistant building according to claim 6, characterized in that: The inner cavity of the limit block (14) is provided with a second slide groove (24), and a second slider (25) and an auxiliary plate (27) slide in the inner cavity of the second slide groove (24). A mounting block (22) is installed on one side of the bottom of the limit block (14) for fixing the damper (23) and always limiting the sliding position of the second slider (25) in the inner cavity of the second slide groove (24).

9. The seismic isolation structure of an earthquake-resistant building according to claim 8, characterized in that: A second spring (28) is installed in the inner cavity of the auxiliary plate (27) to increase the movement resistance of the compression rod (26).

10. The seismic isolation structure of an earthquake-resistant building according to claim 7, characterized in that: One side of the connecting rod (21) is hinged to one side of the limiting block (14).

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