Isolation joint device for seismic isolation building and isolation method thereof

Abstract

The application discloses a kind of shock insulation building shock insulation joint device and its shock insulation method, including retaining wall, it is set in the upper of the foundation main body, the upper of the foundation main body is provided with building main body, the lower of the building main body is provided with shock insulation connecting support;Connecting plate is set in the upper of the retaining wall, one side of the building main body is provided with mounting bracket;Shock insulation joint cover plate is set between the connecting plate and mounting bracket, the upper end of the connecting plate and the lower end of mounting bracket are provided with sliding groove, the inside of the sliding groove is provided with sliding block, the inside of the sliding groove is provided with reset spring, the shock insulation joint cover plate of the shock insulation joint device can be telescopic adjustment from both ends, shock insulation joint cover plate mounting structure has buffering reset function, can quickly make shock insulation joint cover plate reset after being shaken, shock insulation joint cover plate will not fall into shock insulation joint, guarantee subsequent shock insulation joint cover plate use effect, improve the practicality of shock insulation joint device.

Description

Technical Field

[0001] This invention relates to the field of seismic isolation building technology, specifically to a seismic isolation joint device and its seismic isolation method for seismic isolation buildings. Background Technology

[0002] Seismic isolation buildings utilize seismic isolation technology, installing isolation devices at the base or a specific location within the building to form an isolation layer. This isolates the superstructure from the foundation, thereby dissipating seismic energy and preventing or reducing its transmission upwards. This effectively protects the superstructure and the safety of personnel and equipment within the building. With seismic isolation technology, there is a significant relative displacement between adjacent structural units during an earthquake. To ensure that each unit does not interfere with the others during vibration and affect the isolation effect, relatively wide seismic isolation joints are required between the structural units.

[0003] Chinese Patent Publication No. CN218894226U, authorized on April 21, 2023, discloses a seismic isolation joint device for seismic-isolated buildings. The device includes a horizontal isolation joint formed by a seismic isolation layer connecting support, a cantilevered cover plate, and a retaining wall. It also includes a folded steel plate, one end of which is connected to the cantilevered cover plate, and the other end to the retaining wall. The folded steel plate seals the horizontal isolation joint, and the other end rests on the lateral plane of the retaining wall. The height of the folded steel plate is 20mm less than the height of the cantilevered cover plate. The purpose of this invention is to provide a seismic isolation joint device for seismic-isolated buildings. This device has a closed structure, which, while ensuring the seismic isolation effect, prevents the seismic isolation layer from being easily infiltrated by water or sand, thus providing safe and effective protection for the seismic-isolated building.

[0004] To prevent debris from entering the existing seismic isolation joints, an L-shaped seismic isolation joint cover is installed above the seismic isolation joint. The L-shaped seismic isolation joint cover can only be adjusted in one direction. During an earthquake, one end of the seismic isolation joint cover is prone to detach from the floor and fall into the seismic isolation joint, making it impossible to achieve the covering effect afterward, reducing the effectiveness of the seismic isolation joint and failing to meet the usage requirements. Summary of the Invention

[0005] The purpose of this invention is to provide a seismic isolation joint device and its seismic isolation method for seismic isolation buildings, in order to prevent debris from entering the existing seismic isolation joints mentioned in the background art. In order to prevent debris from entering the seismic isolation joints, an L-shaped seismic isolation joint cover plate is installed above the seismic isolation joint. The L-shaped seismic isolation joint cover plate can only be extended and retracted in one direction. In the event of an earthquake, one end of the seismic isolation joint cover plate is prone to detach from the floor and fall into the seismic isolation joint, making it impossible to achieve the covering effect afterward, reducing the effectiveness of the seismic isolation joint and failing to meet the usage requirements.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a seismic isolation joint device for seismic isolation buildings, comprising a foundation body, and further comprising:

[0007] A retaining wall is installed above the main foundation and is cast as a single unit with the main foundation. A building body is installed above the main foundation and is located on one side of the retaining wall. A seismic isolation connection support is installed below the main building and is connected to the main foundation and the main building as a single unit at both ends. A seismic isolation joint is provided between the main building and the retaining wall.

[0008] A connecting plate is provided above the retaining wall, and the connecting plate and the retaining wall are integrated. An installation frame is provided on one side of the main building, and the installation frame is provided above the seismic isolation joint. A reserved installation hole is provided on the main building. An anchor bolt is provided on one side of the installation frame, and the anchor bolt is provided in correspondence with the reserved installation hole.

[0009] A seismic isolation joint cover plate is disposed between the connecting plate and the mounting bracket, with its upper surface inclined. The outer surface of the seismic isolation joint cover plate is coated with an anti-corrosion coating, which is integral with the cover plate. Both the upper end of the connecting plate and the lower end of the mounting bracket are provided with sliding grooves, and each groove contains two sliders, both of which are movably connected to the connecting plate and the mounting bracket. The two sliders are integrally formed with the upper and lower ends of the seismic isolation joint cover plate. Two return springs are disposed inside the sliding grooves, located on either side of the sliders. The two ends of each return spring are fixedly connected to the mounting bracket and the slider, respectively.

[0010] Preferably, the slider is provided with two through holes, which are located on both sides of the return spring. The slide groove is provided with two guide rods, which are located on both sides of the return spring. Both ends of the two guide rods are fixedly connected to the mounting bracket, and the guide rods are connected through the slider. The guide rods are slidably connected to the slider. A baffle is provided on one side of the upper end of the connecting plate, and the baffle is integrated with the connecting plate.

[0011] Preferably, a sealing gasket is provided between the mounting frame and the building body, and the sealing gasket is in close contact with the building body and the mounting frame. An elastic washer is provided between the anchor bolt and the mounting frame, and the elastic washer is movably connected to the anchor bolt. The two ends of the elastic washer are respectively in close contact with the mounting frame and the anchor bolt. Reinforcing ribs are provided at the top and bottom of the mounting frame, with at least six reinforcing ribs provided. The reinforcing ribs are integrated with the mounting frame, and the cross-section of the reinforcing ribs is triangular.

[0012] Preferably, the seismic isolation joint is provided with a first U-shaped connecting seat inside. There are two first U-shaped connecting seats, and the two first U-shaped connecting seats are fixedly connected to the retaining wall and the main body of the building, respectively. A flexible waterproof strip is provided between the two first U-shaped connecting seats, and both ends of the flexible waterproof strip are engaged with the first U-shaped connecting seats.

[0013] Preferably, the seismic isolation joint is provided with a second U-shaped connector inside. There are two second U-shaped connectors, and the two second U-shaped connectors are fixedly connected to the retaining wall and the main building, respectively. A flexible fireproof isolation strip is provided between the two second U-shaped connectors, and both ends of the flexible fireproof isolation strip are engaged with the second U-shaped connectors. The cross-sections of the flexible waterproof strip and the flexible fireproof isolation strip are both arc-shaped. Locking bolts are provided on both the first U-shaped connector and the second U-shaped connector, and the locking bolts are threaded to both the first U-shaped connector and the second U-shaped connector.

[0014] Preferably, the bottom of the foundation body is inclined, and a drainage hole assembly is provided on one side of the retaining wall. There are two drainage hole assemblies, and the drainage hole assembly is connected to the retaining wall as a whole. The drainage hole assembly is connected to the seismic isolation joint.

[0015] Preferably, the sidewall of the slide is provided with a roller groove, and there are two roller grooves. Both ends of the slider are provided with balls, one end of the ball extends into the inside of the roller groove, and the ball is tactilely connected to the mounting bracket and the slider.

[0016] A seismic isolation method for a seismic isolation joint device in a seismic isolation building includes the following steps:

[0017] Step 1: Install the mounting bracket to the building structure using anchor bolts;

[0018] Step 2: Connect the flexible waterproof strip to the first U-shaped connector to form a waterproof structure within the seismic isolation joint;

[0019] Step 3: Connect the flexible fireproof isolation strip to the second U-shaped connector to form a fireproof isolation structure in the seismic isolation joint, so as to avoid the convection of air and moisture inside and outside the structural system from accelerating the aging or oxidation of the seismic isolation connection support.

[0020] Step 4: Connect both ends of the seismic isolation joint cover plate to the connecting plate and the mounting bracket respectively, and seal the upper end of the seismic isolation joint to prevent debris from the ground from entering the gap of the seismic isolation joint. During the seismic isolation process, the main body of the building shakes. The shaking of the main body of the building causes the slider to move in the groove. The extension length of the seismic isolation joint cover plate can be adjusted to effectively cover the seismic isolation joint.

[0021] Step 5: After the earthquake, the reset spring applies a pushing and pulling force to the slider, quickly resetting the slider and restoring the seismic isolation joint cover to its initial state, ensuring the effectiveness of the seismic isolation joint in subsequent use.

[0022] Step 6: The water in the seismic isolation joint flows towards the bottom of the retaining wall, and the water at the bottom of the seismic isolation joint is drained with the help of the drainage hole assembly.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. The invention device, through the arrangement of a connecting plate, a mounting frame, a seismic isolation joint cover plate, a sliding groove, and a slider, connects the two ends of the seismic isolation joint cover plate to the connecting plate and the mounting frame respectively by means of the slider, thereby sealing the upper end of the seismic isolation joint and preventing debris from the ground from entering the gap of the seismic isolation joint. The slider can slide along the sliding groove. After the seismic isolation structure system is subjected to an earthquake, the seismic isolation joint changes, and the slider slides accordingly in the sliding groove, so that the extension of the seismic isolation joint cover plate changes accordingly, thereby fully covering the seismic isolation joint.

[0025] 2. The device of this invention, through the arrangement of baffle, return spring, guide rod and ball, makes one side of the upper part of the retaining wall higher than the other side, which can prevent rainwater from flowing into the seismic isolation joint. The guide rod guides the sliding slider, the ball reduces the sliding resistance of the slider, and the return spring applies a pushing and pulling force to the slider. After the earthquake, the seismic isolation joint cover plate is quickly reset, ensuring the subsequent use effect of the seismic isolation joint.

[0026] 3. The invention device, through the setting of flexible waterproof strip and flexible fireproof isolation strip, forms a waterproof structure in the seismic isolation joint and a fireproof isolation structure in the seismic isolation joint, thereby avoiding the convection of air and moisture inside and outside the structural system from accelerating the aging or oxidation of the seismic isolation connection support.

[0027] 4. The device of this invention, through the setting of the drainage hole assembly, facilitates the drainage of water accumulated at the bottom of the seismic isolation joint, preventing water accumulation in the seismic isolation joint from affecting the service life of the seismic isolation connection support. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 For the present invention Figure 1 A magnified view of a portion of area A;

[0030] Figure 3 This is a cross-sectional view of the present invention;

[0031] Figure 4 This is a diagram showing the connection relationship between the slider and the mounting bracket of the present invention;

[0032] Figure 5 For the present invention Figure 3 A magnified view of a portion of area B.

[0033] In the diagram: 1. Foundation; 2. Retaining wall; 3. Building structure; 4. Seismic isolation connection bearing; 5. Connecting plate; 6. Mounting frame; 7. Seismic isolation joint cover plate; 8. Anchor bolt; 9. Drainage hole assembly; 10. Flexible waterproof strip; 11. Flexible fireproof isolation strip; 12. Sealing gasket; 13. Reinforcing rib; 14. Reserved mounting hole; 15. Elastic washer ring; 16. Slide groove; 17. Baffle; 18. Anti-corrosion coating; 19. Sliding block; 20. Return spring; 21. Through hole; 22. Guide rod; 23. Roller groove; 24. Ball bearing; 25. First U-shaped connecting seat; 26. Second U-shaped connecting seat; 27. Locking bolt; 28. Seismic isolation joint. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0035] Please see Figure 1-5 One embodiment of the present invention provides a seismic isolation joint device for seismic isolation buildings, comprising a foundation body 1, and further comprising:

[0036] A retaining wall 2 is set above the foundation body 1 and is cast as a whole with the foundation body 1. A building body 3 is set above the foundation body 1 and is set on one side of the retaining wall 2. A seismic isolation connection support 4 is set below the building body 3 and is connected to the foundation body 1 and the building body 3 at both ends. A seismic isolation joint 28 is set between the building body 3 and the retaining wall 2.

[0037] A connecting plate 5 is set above the retaining wall 2, and the connecting plate 5 and the retaining wall 2 are integrated. An installation frame 6 is set on one side of the main building 3, and the installation frame 6 is set above the seismic isolation joint 28. A reserved installation hole 14 is set on the main building 3. An anchor bolt 8 is set on one side of the installation frame 6, and the anchor bolt 8 is set in correspondence with the reserved installation hole 14.

[0038] The seismic isolation joint cover plate 7 is disposed between the connecting plate 5 and the mounting bracket 6, and the upper end face of the seismic isolation joint cover plate 7 is inclined. The outer surface of the seismic isolation joint cover plate 7 is provided with an anti-corrosion coating 18, and the anti-corrosion coating 18 is integrated with the seismic isolation joint cover plate 7. The upper end of the connecting plate 5 and the lower end of the mounting bracket 6 are both provided with a sliding groove 16. There are two sliding blocks 19 inside the sliding groove 16, and both sliding blocks 19 are movably connected to the connecting plate 5 and the mounting bracket 6. The upper and lower ends of the two sliding blocks 19 are integrated with the upper and lower ends of the seismic isolation joint cover plate 7. There are two return springs 20 inside the sliding groove 16, and the two return springs 20 are disposed on both sides of the sliding block 19. The two ends of the return springs 20 are fixedly connected to the mounting bracket 6 and the sliding block 19, respectively.

[0039] In use: Use anchor bolts 8 to install the mounting bracket 6 to the building body 3. Use sliders 19 to connect both ends of the seismic isolation joint cover plate 7 to the connecting plate 5 and the mounting bracket 6 respectively. The seismic isolation joint cover plate 7 seals the top of the seismic isolation joint 28 to prevent debris from the ground from entering the gap of the seismic isolation joint. When the building is subjected to an earthquake, the size of the seismic isolation joint 28 changes. The slider 19 slides in the groove 16, thereby changing the extension of the seismic isolation joint cover plate 7 to fully cover the seismic isolation joint 28. The return spring 20 applies a pushing and pulling force to the slider 19. After the earthquake is completed, the return spring 20 resets the slider 19, so that the seismic isolation joint cover plate 7 returns to its initial state, ensuring the subsequent use effect of the seismic isolation joint 28.

[0040] Please see Figure 4 The slider 19 is provided with two through holes 21, which are located on both sides of the return spring 20. The slide groove 16 is provided with two guide rods 22, which are located on both sides of the return spring 20. Both ends of the two guide rods 22 are fixedly connected to the mounting bracket 6, and the guide rods 22 are connected through the slider 19 and slidably connected to the slider 19. A baffle 17 is provided on one side of the upper end of the connecting plate 5, and the baffle 17 is integrated with the connecting plate 5. The guide rods 22 guide and limit the installed slider 19, improve the connection stability between the slider 19 and the connecting plate 5 and the mounting bracket 6, and ensure that the slider 19 slides smoothly in the slide groove 16.

[0041] Please see Figure 1 , Figure 2 and Figure 3 A sealing gasket 12 is provided between the mounting frame 6 and the main building 3, and the sealing gasket 12 is in close contact with the main building 3 and the mounting frame 6. An elastic washer ring 15 is provided between the anchor bolt 8 and the mounting frame 6, and the elastic washer ring 15 is movably connected to the anchor bolt 8. The two ends of the elastic washer ring 15 are respectively in close contact with the mounting frame 6 and the anchor bolt 8. Reinforcing ribs 13 are provided on the top and bottom of the mounting frame 6. There are at least six reinforcing ribs 13, and the reinforcing ribs 13 are integrated with the mounting frame 6. The cross section of the reinforcing ribs 13 is triangular. The sealing gasket 12 and the elastic washer ring 15 improve the connection stability between the mounting frame 6 and the main building 3. They can also play a shock absorption role when subjected to earthquakes. The reinforcing ribs 13 increase the structural strength of the connection end of the reinforcing ribs 13.

[0042] Please see Figure 1 , Figure 3 and Figure 5The seismic isolation joint 28 is provided with a first U-shaped connecting seat 25. There are two first U-shaped connecting seats 25, and the two first U-shaped connecting seats 25 are fixedly connected to the retaining wall 2 and the main building 3 respectively. A flexible waterproof strip 10 is provided between the two first U-shaped connecting seats 25, and both ends of the flexible waterproof strip 10 are engaged with the first U-shaped connecting seat 25, so that a waterproof structure is formed in the seismic isolation joint 28 through the flexible waterproof strip 10.

[0043] Please see Figure 1 , Figure 3 and Figure 5 The seismic isolation joint 28 is provided with a second U-shaped connecting seat 26. There are two second U-shaped connecting seats 26, and the two second U-shaped connecting seats 26 are fixedly connected to the retaining wall 2 and the main building 3 respectively. A flexible fireproof isolation strip 11 is provided between the two second U-shaped connecting seats 26, and both ends of the flexible fireproof isolation strip 11 are engaged with the second U-shaped connecting seats 26. The cross-sections of the flexible waterproof strip 10 and the flexible fireproof isolation strip 11 are both arc-shaped. Locking bolts 27 are provided on the first U-shaped connecting seat 25 and the second U-shaped connecting seat 26, and the locking bolts 27 are threaded to the first U-shaped connecting seat 25 and the second U-shaped connecting seat 26. A fireproof isolation structure is formed in the seismic isolation joint 28 through the flexible fireproof isolation strip 11, so as to avoid the convection of air and moisture inside and outside the structural system from accelerating the aging or oxidation of the seismic isolation connection support 4.

[0044] Please see Figure 1 The bottom of the foundation body 1 is inclined, and a drainage hole assembly 9 is provided on one side of the retaining wall 2. There are two drainage hole assemblies 9, and the drainage hole assembly 9 is connected to the retaining wall 2 as a whole. The drainage hole assembly 9 is connected to the seismic isolation joint 28. The drainage hole assembly 9 facilitates the drainage of water at the bottom of the seismic isolation joint 28, preventing water accumulation in the seismic isolation joint 28 from affecting the service life of the seismic isolation connection support 4.

[0045] Please see Figure 4 The slide 16 has two roller grooves 23 on its side wall. Both ends of the slider 19 are provided with ball bearings 24. One end of the ball bearing 24 extends into the interior of the roller groove 23. The ball bearing 24 is in rolling connection with the mounting bracket 6 and the slider 19. The roller groove 23 and the ball bearing 24 reduce the sliding resistance of the slider 19 and improve the smoothness of the slider 19 sliding in the slide 16.

[0046] A seismic isolation method for a seismic isolation joint device in a seismic isolation building includes the following steps:

[0047] Step 1: Use anchor bolts 8 to install the mounting bracket 6 to the main building 3;

[0048] Step 2: Connect the flexible waterproof strip 10 to the first U-shaped connector 25 to form a waterproof structure within the seismic isolation joint 28;

[0049] Step 3: Connect the flexible fireproof isolation strip 11 to the second U-shaped connecting seat 26 to form a fireproof isolation structure in the seismic isolation joint 28, so as to avoid the convection of air and moisture inside and outside the structural system from accelerating the aging or oxidation of the seismic isolation connecting support 4.

[0050] Step 4: Connect the two ends of the seismic isolation joint cover plate 7 to the connecting plate 5 and the mounting bracket 6 respectively, and seal the upper end of the seismic isolation joint 28 to prevent debris from the ground from entering the gap of the seismic isolation joint 28. During the seismic isolation process, the main body of the building 3 shakes. The shaking of the main body of the building 3 causes the slider 19 to move in the slide groove 16. The extension length of the seismic isolation joint cover plate 7 is adjustable, effectively covering the seismic isolation joint 28.

[0051] Step 5: After the earthquake, the reset spring 20 applies a pushing and pulling force to the slider 19, quickly resetting the slider 19 and restoring the seismic isolation joint cover plate 7 to its initial state, ensuring the subsequent use effect of the seismic isolation joint 28;

[0052] Step 6: The water in the seismic isolation joint 28 flows towards the bottom of the retaining wall 2, and the water at the bottom of the seismic isolation joint 28 is drained by the drainage hole assembly 9.

[0053] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0054] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A seismic isolation joint device for seismic isolation buildings, comprising a foundation body (1), characterized in that: A retaining wall (2) is set above the foundation body (1), and the retaining wall (2) and the foundation body (1) are cast together. A building body (3) is set above the foundation body (1), and the building body (3) is set on one side of the retaining wall (2). A seismic isolation connection support (4) is set below the building body (3), and the two ends of the seismic isolation connection support (4) are connected to the foundation body (1) and the building body (3) respectively. A seismic isolation joint (28) is set between the building body (3) and the retaining wall (2). A connecting plate (5) is set above the retaining wall (2), and the connecting plate (5) and the retaining wall (2) are integrated. An installation frame (6) is set on one side of the building body (3), and the installation frame (6) is set above the seismic isolation joint (28). A reserved installation hole (14) is set on the building body (3). An anchor bolt (8) is set on one side of the installation frame (6), and the anchor bolt (8) is set in correspondence with the reserved installation hole (14). A seismic isolation joint cover plate (7) is disposed between the connecting plate (5) and the mounting bracket (6), and the upper end surface of the seismic isolation joint cover plate (7) is inclined. The exterior of the seismic isolation joint cover plate (7) is provided with an anti-corrosion coating (18), and the anti-corrosion coating (18) is integral with the seismic isolation joint cover plate (7). The upper end of the connecting plate (5) and the lower end of the mounting bracket (6) are both provided with a sliding groove (16), and the interior of the sliding groove (16) is provided with a slider (19). There are two sliders (19), and both sliders (19) are movably connected to the connecting plate (5) and the mounting bracket (6). The upper and lower ends of the two sliders (19) are integral with the upper and lower ends of the seismic isolation joint cover plate (7). The slide groove (16) is equipped with two return springs (20), which are located on both sides of the slider (19). The two ends of the return springs (20) are fixedly connected to the mounting bracket (6) and the slider (19), respectively. The slider (19) is equipped with two through holes (21), which are located on both sides of the return springs (20). The slide groove (16) is equipped with two guide rods (22), which are located on both sides of the return springs (20). The two ends of the guide rods (22) are both connected to the mounting bracket (6) and the slider (19), respectively. The mounting bracket (6) is fixedly connected, and the guide rod (22) and the slider (19) are connected through each other. The guide rod (22) and the slider (19) are slidably connected. A baffle (17) is provided on one side of the upper end of the connecting plate (5), and the baffle (17) and the connecting plate (5) are integrated. A sealing gasket (12) is provided between the mounting bracket (6) and the building body (3), and the sealing gasket (12) is in contact with the building body (3) and the mounting bracket (6). An elastic washer (15) is provided between the anchor bolt (8) and the mounting bracket (6), and the elastic washer (15) is movably connected to the anchor bolt (8). The two ends of the elastic washer (15) are respectively connected to the mounting bracket (6) and the anchor bolt. The parts (8) are fitted together. The mounting frame (6) is provided with reinforcing ribs (13) above and below. There are at least six reinforcing ribs (13), and the reinforcing ribs (13) and the mounting frame (6) are integrated. The cross section of the reinforcing ribs (13) is triangular. The seismic isolation joint (28) is provided with a first U-shaped connecting seat (25). There are two first U-shaped connecting seats (25), and the two first U-shaped connecting seats (25) are fixedly connected to the retaining wall (2) and the main body of the building (3) respectively. A flexible waterproof strip (10) is provided between the two first U-shaped connecting seats (25), and both ends of the flexible waterproof strip (10) are snapped into the first U-shaped connecting seat (25).The seismic isolation joint (28) is provided with a second U-shaped connector (26). There are two second U-shaped connectors (26), and the two second U-shaped connectors (26) are fixedly connected to the retaining wall (2) and the main building (3) respectively. A flexible fireproof isolation strip (11) is provided between the two second U-shaped connectors (26), and both ends of the flexible fireproof isolation strip (11) are engaged with the second U-shaped connectors (26). The cross-sections of the flexible waterproof strip (10) and the flexible fireproof isolation strip (11) are both arc-shaped. Locking bolts (27) are provided on both the first U-shaped connector (25) and the second U-shaped connector (26), and the locking bolts (27) are connected to the first U-shaped connector. The base (25) and the second U-shaped connecting base (26) are both threaded; the bottom of the foundation body (1) is inclined; a drainage hole assembly (9) is provided on one side of the retaining wall (2), there are two drainage hole assemblies (9), and the drainage hole assembly (9) is connected to the retaining wall (2) as a whole; the drainage hole assembly (9) is connected to the seismic isolation joint (28); a roller groove (23) is provided on the side wall of the slide (16), there are two roller grooves (23); both ends of the slider (19) are provided with ball bearings (24), one end of the ball bearing (24) extends into the inside of the roller groove (23), and the ball bearing (24) is tumblingly connected to the mounting frame (6) and the slider (19).

2. A seismic isolation method based on the seismic isolation joint device for seismic isolation buildings according to claim 1, characterized in that: Includes the following steps: Step 1: Use anchor bolts (8) to install the mounting bracket (6) to the building body (3); Step 2: Connect the flexible waterproof strip (10) to the first U-shaped connector (25) to form a waterproof structure in the seismic isolation joint (28); Step 3: Connect the flexible fireproof isolation strip (11) to the second U-shaped connecting seat (26) to form a fireproof isolation structure in the seismic isolation joint (28) to avoid the convection of air and moisture inside and outside the structural system from accelerating the aging or oxidation of the seismic isolation connecting support (4); Step 4: Connect the two ends of the seismic isolation joint cover plate (7) to the connecting plate (5) and the mounting bracket (6) respectively, and seal the upper end of the seismic isolation joint (28) to prevent debris from the ground from entering the gap of the seismic isolation joint (28). During the seismic isolation process, the main body of the building (3) shakes. The shaking of the main body of the building (3) causes the slider (19) to move in the groove (16). The extension length of the seismic isolation joint cover plate (7) is adjustable, effectively covering the seismic isolation joint (28). Step 5: After the earthquake, the reset spring (20) applies a pushing and pulling force to the slider (19) to quickly reset the slider (19), and the seismic isolation joint cover plate (7) returns to its initial state to ensure the effectiveness of the subsequent seismic isolation joint (28). Step 6: The water in the seismic isolation joint (28) flows toward the bottom of the retaining wall (2), and the water at the bottom of the seismic isolation joint (28) is drained by the drainage hole assembly (9).

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