Anti-beam-separation friction pendulum bearing

Abstract

The application relates to a fall-beam separation type friction pendulum support, which comprises an upper embedded steel plate, an upper connecting plate, an upper sliding plate, a spherical cap lining plate, a curved surface friction pair, a damping sliding plate, a lower connecting plate, a spherical surface sliding plate, a lower anchoring seat and a lower embedded steel plate, the upper connecting plate is fixedly connected below the upper embedded steel plate, the upper sliding plate is arranged below the upper connecting plate, the spherical cap lining plate is arranged below the upper sliding plate, and the spherical surface sliding plate is arranged below the spherical cap lining plate and is in sliding fit with the spherical cap lining plate to form the curved surface friction pair. The application has the functions of decoupling and multi-channel defense. The shock absorption and isolation functions of the friction pendulum and the fall-beam prevention functions of the steel hinge wire are completely separated in the mechanical path, the steel hinge wire does not participate in stress under normal working conditions and small and medium earthquakes, unnecessary fatigue damage is avoided, the steel hinge wire is automatically started under rare earthquakes, three defense lines of the friction pendulum shock absorption and isolation-high displacement stop-steel hinge wire flexible constraint are formed, each line does not interfere with each other, and the design goal of multi-stage defense and graded energy dissipation is achieved.

Description

Technical Field

[0001] This invention relates to the field of anti-fall beam support technology, specifically an anti-fall beam separate friction pendulum support. Background Technology

[0002] The anti-fall beam separated friction pendulum bearing belongs to the field of seismic isolation and anti-fall beam technology in bridge engineering. It is widely used in the connection parts between the beam and pier or cap beam of highway and railway bridges. It is used to bear the vertical load of the bridge beam and superstructure, adapt to the normal horizontal displacement of the beam under the action of temperature change, concrete shrinkage and creep and vehicle traffic, and prevent the beam from falling in the event of an earthquake through seismic isolation and limiting restraint, so as to ensure the overall safety of the bridge structure.

[0003] In existing technologies, bridge bearings typically include an upper embedded steel plate, a lower embedded steel plate, and a friction pendulum unit positioned between them. The friction pendulum unit consists of a spherical cap liner and a spherical sliding plate in sliding engagement. Under normal operating conditions, the friction pendulum unit adapts to the normal horizontal displacement of the beam by sliding on the spherical surface, maintaining stable bearing capacity. During an earthquake, the beam drives the upper bearing assembly to slide back and forth along the spherical surface, dissipating seismic energy through arc-shaped sliding friction, and relying on rigid limiting structures or steel strands to constrain beam displacement and prevent beam collapse. However, existing devices still have the following shortcomings: First, their seismic energy dissipation capacity is limited. The friction pendulum can only dissipate energy through limited arc-shaped friction, failing to achieve gradual and stable dissipation of seismic energy. During earthquakes, the beam vibrates violently, easily damaging the bearing. Second, anti-collapse constraints largely rely on rigid limiting or instantaneous tensioning of steel strands. When the seismic displacement reaches the limit, excessive transient impact loads are generated, easily causing damage to the limiting structure and steel strands, making it difficult to guarantee the reliability and durability of anti-collapse measures. Summary of the Invention

[0004] The purpose of this invention is to provide a separate friction pendulum support for preventing beam fall.

[0005] The objective of this invention is achieved through the following technical solution: a decoupled friction pendulum support for preventing beam fall, comprising an upper embedded steel plate, an upper connecting plate, an upper sliding plate, a spherical crown liner, a curved friction pair, a damping sliding plate, a lower connecting plate, a spherical sliding plate, a lower anchoring seat, and a lower embedded steel plate. The upper connecting plate is fixedly connected to the lower part of the upper embedded steel plate. The upper sliding plate is disposed below the upper connecting plate. The spherical crown liner is disposed below the upper sliding plate. The spherical sliding plate is disposed below the spherical crown liner and slides in cooperation with the spherical crown liner to form the curved friction pair. The damping sliding plate is disposed below the upper embedded steel plate. Below the spherical sliding plate, the lower connecting plate is disposed below the shock-absorbing sliding plate, the lower anchor seat is disposed below the lower connecting plate, and the lower embedded steel plate is fixedly connected to the lower anchor seat; it also includes a steel strand assembly and an elastic buffer pad layer. The steel strand assembly is connected between the upper embedded steel plate and the lower embedded steel plate and is used to limit the separation of the upper embedded steel plate and the lower embedded steel plate when the upper embedded steel plate and the lower embedded steel plate slide relative to each other and the sliding amount exceeds a set range to prevent the beam from falling. The elastic buffer pad layer is disposed between the steel strand assembly and the upper embedded steel plate and the lower embedded steel plate.

[0006] As a further description of the above technical solution: The steel strand assembly includes multiple steel strands, with each steel strand having its two ends fixedly connected to the upper embedded steel plate and the lower embedded steel plate, respectively, and the multiple steel strands are arranged at intervals along the circumference of the upper embedded steel plate and the lower embedded steel plate. As a further description of the above technical solution: The elastic buffer layer is disposed between the steel strand assembly and the upper embedded steel plate and between the steel strand assembly and the lower embedded steel plate, and is used to provide elastic buffer when the steel strand assembly is subjected to tensile impact; As a further description of the above technical solution: The spherical sliding plate has an upward-facing concave spherical surface, and the spherical crown liner has a convex spherical surface adapted to the concave spherical surface. The curved friction pair is a sliding friction surface between the convex spherical surface and the concave spherical surface. The shock-absorbing sliding plate is fitted between the spherical sliding plate and the lower connecting plate to provide shock absorption and damping when the friction pendulum slides. As a further description of the above technical solution: It also includes a bottom anchor seat, a support plate, and a lower anchor bolt; the bottom anchor seat and the support plate are both fixedly connected to the lower anchor seat, and the lower anchor seat is fixedly connected to the lower embedded steel plate by the lower anchor bolt; As a further description of the above technical solution: It also includes a limiting device, which is fixedly connected to the lower embedded steel plate and includes a fixed straight plate, a U-shaped fixed plate, a sliding long plate and a fixing bolt; the U-shaped fixed plate and the fixed straight plate are disposed opposite to each other on the lower embedded steel plate, the sliding long plate is slidably disposed between the U-shaped fixed plate and the fixed straight plate, and the fixing bolt is used to fix the sliding long plate to the fixed straight plate or the U-shaped fixed plate; As a further description of the above technical solution: The limiting device further includes an adjusting screw, a spring, and a rotating disk; the rotating disk is rotatably connected to the fixed straight plate, the adjusting screw is drivenly connected to the rotating disk, the spring is sleeved on the adjusting screw, and one end of the spring abuts against the fixed straight plate and the other end abuts against the sliding long plate, for applying an elastic restoring force to the sliding long plate; As a further description of the above technical solution: The limiting device further includes a sliding limiting plate, a fixed limiting plate, a rotating limiting plate, a fixed round rod, and a limiting cylinder; the fixed limiting plate is fixedly connected to the fixed straight plate or the U-shaped fixed plate, the sliding limiting plate is slidably connected to the fixed limiting plate, the rotating limiting plate is rotatably connected to the fixed limiting plate through the fixed round rod, and the limiting cylinder is fixedly disposed at the end of the rotating limiting plate to limit the sliding range of the sliding plate.

[0007] Compared with the prior art, the advantages of the present invention are as follows: Functional decoupling and multi-layered defense. The vibration reduction and isolation function of the friction pendulum is completely separated from the anti-fall beam function of the steel strand in terms of mechanical path. The steel strand does not participate in the stress under normal working conditions and small and medium earthquakes, avoiding unnecessary fatigue damage; it automatically activates under rare earthquakes, forming three lines of defense: "vibration pendulum vibration reduction and isolation - high displacement stop - steel strand flexible constraint", each without interference, realizing the design goal of multi-level defense and graded energy consumption.

[0008] It has excellent buffering performance. The steel strand has a set relaxation length. After the seismic displacement reaches the limit, the steel strand is gradually tensioned instead of being straightened instantly. At the same time, the elastic buffer layer can further reduce the impact load and avoid the excessive impact force generated by transient collisions in traditional rigid limiting devices.

[0009] It is safe, reliable, and economical. After the functions of the steel strand and the friction pendulum are decoupled, the steel strand only needs to withstand the ultimate tensile force under seismic action, without having to consider other working conditions. This can significantly reduce its cross-sectional size and component specifications, thereby reducing material costs. At the same time, the structure has a high degree of modularity, which facilitates production and on-site installation, and is conducive to the promotion and application of engineering projects.

[0010] Monitorable and maintainable. Each steel strand assembly can be installed and replaced independently, and is equipped with a real-time tension monitoring device, which can monitor the working status of the anti-fall beam unit for a long time, facilitating maintenance and management during operation. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the main body of an embodiment of the anti-fall beam separation friction pendulum support of the present invention; Figure 2 This is a schematic diagram of the lower anchor bolt of a non-falling beam separation friction pendulum support proposed in this invention; Figure 3 This is a schematic diagram of the steel strand assembly of a decoupled friction pendulum support for preventing beam fall, as proposed in this invention. Figure 4 This is a schematic diagram of the curved surface friction pair of a separate friction pendulum support for preventing beam fall, as proposed in this invention. Figure 5 This is a schematic diagram of the U-shaped fixing plate of a non-falling beam separation friction pendulum support proposed in this invention; Figure 6 This is a schematic diagram of the fixed straight plate of a anti-fall beam separation friction pendulum support proposed in this invention; Figure 7 This is a schematic diagram of the fixed limiting plate of a separation friction pendulum support for preventing beam fall, as proposed in this invention. Figure 8 This is a schematic diagram of the rotation limiting plate of a separation friction pendulum support for preventing beam fall, as proposed in this invention.

[0012] Labeling Explanation: 1. Upper Embedded Steel Plate; 2. Upper Connecting Plate; 3. Upper Sliding Plate; 4. Spherical Crown Liner; 5. Curved Friction Pair; 6. Shock Absorbing Slide Plate; 7. Lower Connecting Plate; 8. Bottom Anchor Seat; 9. Spherical Slide Plate; 10. Lower Anchor Seat; 11. Support Plate; 12. Steel Straight Cable Assembly; 13. Elastic Buffer Pad; 14. Lower Embedded Steel Plate; 15. Lower Anchor Bolt; 16. Fixed Straight Plate; 17. U-Shaped Fixed Plate; 18. Sliding Long Plate; 19. Fixed Bolt; 20. Adjusting Screw; 21. Elastic Spring; 22. Rotating Disc; 23. Sliding Limiting Plate; 24. Fixed Limiting Plate; 25. Rotating Limiting Plate; 26. Fixed Round Rod; 27. Limiting Cylinder. Detailed Implementation

[0013] The present invention will now be described in detail with reference to the accompanying drawings and embodiments: like Figure 1 and 8The diagram shown is a schematic representation of an embodiment of a bridge beam-prevention, separable friction pendulum bearing provided by the present invention. It includes an upper embedded steel plate 1, an upper connecting plate 2, an upper sliding plate 3, a spherical crown liner 4, a curved friction pair 5, a damping sliding plate 6, a lower connecting plate 7, a spherical sliding plate 9, a lower anchoring seat 10, and a lower embedded steel plate 14. The upper embedded steel plate 1 is used to bear the vertical load of the bridge beam and superstructure, thereby stably introducing the load into the bearing and maintaining the overall stability of the bearing. The spherical sliding plate 9 has an upward-facing concave spherical surface, which provides a concave spherical sliding surface for the spherical crown liner 4. The friction pendulum unit now slides stably, and the arc-surface restoring force is established smoothly. The spherical cap plate 4 has a convex spherical surface adapted to the concave spherical surface, which slides in conjunction with the spherical sliding plate 9 to achieve reciprocating sliding and continuous frictional energy dissipation under seismic action. The curved friction pair 5 is the sliding friction surface between the convex and concave spherical surfaces, realizing frictional energy dissipation and vibration reduction, and relying on the arc-surface restoring force to pull the support back to the equilibrium position. The damping sliding plate 6 is fitted between the spherical sliding plate 9 and the lower connecting plate 7 to provide damping during the sliding of the friction pendulum, suppressing beam vibration by generating damping during the sliding process. The upper connecting plate 2 is fixedly connected to the lower part of the upper embedded steel plate 1 to receive and transmit the vertical load on the upper embedded steel plate 1 downwards, so as to realize the stable transmission of load from top to bottom and ensure the balanced force on the support; the upper sliding plate 3 is set below the upper connecting plate 2 and slides synchronously with the horizontal displacement of the support to adapt to the normal horizontal displacement of the bridge and ensure that the normal sliding of the support is not interfered with; the spherical crown liner 4 is set below the upper sliding plate 3, and the spherical sliding plate 9 is set below the spherical crown liner 4 and slides in cooperation with the spherical crown liner 4 to form a curved surface. The surface friction pair 5 and the damping plate 6 are located below the spherical plate 9. The lower connecting plate 7 is located below the damping plate 6 and is used to bear and transmit the load output by the friction pendulum unit downward, so as to realize the smooth downward output of the load. The lower anchoring seat 10 is located below the lower connecting plate 7 and is used to bear and transmit the overall load of the support downward, so as to realize the stable transmission of the load to the pier or cap beam. The lower embedded steel plate 14 is fixedly connected to the lower anchoring seat 10 and is used to receive and transmit the entire vertical load of the support downward, so as to realize the reliable transmission of the load to the pier or cap beam through anchoring.

[0014] It also includes a steel strand assembly 12 and an elastic buffer layer 13. The steel strand assembly 12 includes multiple steel strands, each with its ends fixedly connected to the upper embedded steel plate 1 and the lower embedded steel plate 14, respectively. The multiple steel strands are arranged at intervals along the circumference of the upper embedded steel plate 1 and the lower embedded steel plate 14. The steel strand assembly 12 is connected between the upper embedded steel plate 1 and the lower embedded steel plate 14. When the seismic displacement reaches or exceeds the set relaxation length, it gradually tensions from a relaxed state and bears tensile force. It is used to support the upper embedded steel plate 1 and the lower embedded steel plate 14. 4. When relative slippage occurs and the slippage exceeds the set range, the two are restricted from separating to prevent beam drop; the elastic buffer layer 13 is provided between the steel strand assembly 12 and the upper embedded steel plate 1 and / or the lower embedded steel plate 14. The elastic buffer layer 13 is provided between the steel strand assembly 12 and the upper embedded steel plate 1 and between the steel strand assembly 12 and the lower embedded steel plate 14. It is used to provide elastic buffer when the steel strand assembly 12 is subjected to tensile impact. By absorbing the impact of compression at the moment the steel strand assembly 12 is tensioned, the constraint force is established smoothly.

[0015] It also includes a bottom anchorage 8, a support plate 11, and a lower anchor bolt 15. The bottom anchorage 8 is used to collect and bear the vertical load transmitted from the lower part of the support, so as to realize the concentrated collection of load and stable force transmission. The support plate 11 is used to provide auxiliary support to enhance the rigidity of the lower structure of the support and ensure the stable bearing of the support. The bottom anchorage 8 and the support plate 11 are both fixedly connected to the lower anchorage 10. The lower anchorage 10 is fixedly connected to the lower embedded steel plate 14 by the lower anchor bolt 15. The lower anchor bolt 15 is used to anchor the bottom of the support to the pier or cap beam, so as to realize the final reliable transmission of load and the stable installation of the support.

[0016] It also includes a limiting device, which is fixedly connected to the lower embedded steel plate 14. The limiting device includes a fixed straight plate 16, a U-shaped fixed plate 17, a sliding long plate 18, and a fixing bolt 19. The U-shaped fixed plate 17 and the fixed straight plate 16 are arranged opposite to each other on the lower embedded steel plate 14. The fixed straight plate 16 is used to cooperate with the U-shaped fixed plate 17 to form a limiting frame, which guides and limits the sliding of the sliding long plate 18. The U-shaped fixed plate 17 is used to cooperate with the fixed straight plate 16 to form a limiting frame, which provides a sliding channel for the sliding long plate 18 and constrains its sliding direction. The sliding long plate 18 is slidably arranged between the U-shaped fixed plate 17 and the fixed straight plate 16. It slides within the limiting frame to the end of the stroke according to the sliding direction of the support, converting the horizontal displacement of the support into a controllable stroke and limiting it. The fixing bolt 19 is used to fix the sliding long plate 18 to the fixed straight plate 16 or the U-shaped fixed plate 17, constraining the sliding long plate 18, so as to realize that the sliding long plate 18 slides smoothly within the specified stroke and avoids deviation.

[0017] The limiting device also includes an adjusting screw 20, a spring 21, and a rotating disk 22. The rotating disk 22 is rotatably connected to the fixed straight plate 16 and rotates in coordination with the displacement of the sliding long plate 18. It is linked with the adjusting screw 20 and works in conjunction with the reset. The adjusting screw 20 is connected to the rotating disk 22 and rotates in coordination with the rotating disk 22. It is used to adjust the sliding stroke and cooperate with the limiting action. The spring 21 is sleeved on the adjusting screw 20, with one end of the spring 21 abutting against the fixed straight plate 16 and the other end abutting against the sliding long plate 18. It is used to apply an elastic reset force to the sliding long plate 18. It is gradually compressed and stores elastic deformation energy as the sliding long plate 18 is displaced. After the earthquake, it is released to push the support as a whole back to the initial position and restore the standby state.

[0018] The limiting device also includes a sliding limiting plate 23, a fixed limiting plate 24, a rotating limiting plate 25, a fixed round rod 26, and a limiting cylinder 27. The fixed limiting plate 24 is fixedly connected to the fixed straight plate 16 or the U-shaped fixed plate 17 and cooperates with the sliding limiting plate 23 to form a stop, reliably limiting the stroke of the sliding long plate 18. The sliding limiting plate 23 is slidably connected to the fixed limiting plate 24 and cooperates with the fixed limiting plate 24 to stop and limit the sliding end point of the sliding long plate 18. The rotating limiting plate 25 is rotatably connected to the fixed limiting plate 24 through the fixed round rod 26 and rotates around the fixed round rod 26. It rotates flexibly with the displacement of the sliding long plate 18 and cooperates with the limiting. The fixed round rod 26 is used to support the stable rotation of the rotating limiting plate 25, so as to realize the flexible and reliable rotation of the rotating limiting plate 25. The limiting cylinder 27 is fixedly set at the end of the rotating limiting plate 25 and is used to limit the sliding range of the sliding long plate 18. By abutting against the limiting sliding end point, the horizontal displacement of the support is limited within a safe range.

[0019] Working principle: Under normal use, the vertical load of the bridge beam and superstructure is borne by the upper embedded steel plate 1, and is transferred in sequence through the upper connecting plate 2, upper sliding plate 3, spherical crown liner 4, curved friction pair 5, spherical sliding plate 9, damping sliding plate 6, and lower connecting plate 7 to the lower anchorage 10. Then, it merges with the support plate 11 through the bottom anchorage 8 into the lower embedded steel plate 14, and is finally transferred to the pier or cap beam by the lower anchor bolt 15. The support remains stable under the action of vertical load, and the friction pendulum unit is in a static state.

[0020] When the bridge beam undergoes normal horizontal displacement due to temperature changes, concrete shrinkage and creep, or vehicle traffic, the upper embedded steel plate 1 drives the upper connecting plate 2, upper sliding plate 3, and spherical crown liner 4 to swing and slide slightly along the concave spherical surface of the curved friction pair 5. The friction pendulum unit adapts to the normal displacement through arc surface sliding. At this time, the steel strand assembly 12 remains relaxed and does not bear tension due to its own set relaxation length, and the elastic buffer pad 13 does not participate in the compression. The normal sliding of the support is not interfered with.

[0021] When encountering small to medium earthquakes, the horizontal seismic action causes the upper support assembly to drive the beam to slide back and forth along the curved friction pair 5 on the spherical sliding plate 9. The friction between the spherical crown liner 4 and the spherical sliding plate 9 continuously consumes seismic energy. The arc restoring force of the spherical surface pulls the support to the equilibrium position. The damping sliding plate 6 generates damping during the sliding process to suppress vibration. The seismic energy is dissipated step by step. The horizontal seismic action is mainly borne by the sliding deformation of the friction pendulum unit. At this stage, the seismic displacement has not yet reached the relaxation length set by the steel strand assembly 12. The steel strand anti-fall beam unit remains in a non-working state and does not constrain the sliding of the friction pendulum.

[0022] When the seismic displacement continues to increase and reaches or exceeds the relaxation length set by the steel strand assembly 12, the steel strand assembly 12 is gradually tensioned from the relaxed state and begins to bear tensile force, thereby providing flexible restraint force, limiting the separation tendency between the upper embedded steel plate 1 and the lower embedded steel plate 14, restraining the beam above the pier, and preventing the beam from falling; during the tensioning process of the steel strand assembly 12, the elastic buffer pad 13 bears compression and absorbs the impact of the tensioning moment, so that the restraint force is established smoothly.

[0023] When the horizontal displacement of the support exceeds the normal stroke of the friction pendulum unit and enters an extreme working condition, the limiting device installed on the lower embedded steel plate 14 begins to function. The fixed straight plate 16 and the U-shaped fixed plate 17 form a limiting frame. Under the constraint of the fixed bolt 19, the sliding long plate 18 slides within the frame in the direction of the support's sliding movement. When the sliding long plate 18 slides to the end of the set stroke, the sliding limiting plate 23 and the fixed limiting plate 24 cooperate to stop it. The rotating limiting plate 25 rotates around the fixed round rod 26, and the limiting cylinder 27 abuts against the end point of the limited sliding, thereby limiting the horizontal displacement of the support within a safe range. During the sliding process, the adjusting screw 20 and the rotating disk 22 rotate in coordination, and the elastic spring 21 is gradually compressed and stores elastic deformation energy as the sliding long plate 18 is displaced.

[0024] After the earthquake ends, the friction pendulum unit automatically swings back to the center position under the action of the arc surface restoring force of the curved friction pair 5. At the same time, the elastic spring 21 releases the stored elastic deformation energy, pushing the sliding plate 18 to drive the support as a whole back to the initial position. The rotating disk 22 and the rotating limit plate 25 then rotate in the opposite direction, and the support returns to the normal use state. The steel strand assembly 12 returns to the relaxed state, and the whole device enters the standby state, waiting for the next load or earthquake cycle.

Claims

1. A type of anti-fall beam separation friction pendulum support, comprising an upper pre-embedded steel plate (1), an upper connecting plate (2), an upper sliding plate (3), a spherical crown liner (4), a curved surface friction pair (5), a shock-absorbing sliding plate (6), a lower connecting plate (7), a spherical sliding plate (9), a lower anchoring seat (10), and a lower pre-embedded steel plate (14), wherein the upper connecting plate (2) is fixedly connected to the lower part of the upper pre-embedded steel plate (1), the upper sliding plate (3) is disposed below the upper connecting plate (2), and the spherical crown liner (4) is disposed below the upper sliding plate (10). Below the moving plate (3), the spherical sliding plate (9) is disposed below the spherical crown liner (4) and slides in cooperation with the spherical crown liner (4) to form the curved surface friction pair (5). The shock-absorbing sliding plate (6) is disposed below the spherical sliding plate (9). The lower connecting plate (7) is disposed below the shock-absorbing sliding plate (6). The lower anchor seat (10) is disposed below the lower connecting plate (7). The lower embedded steel plate (14) is fixedly connected to the lower anchor seat (10). The feature is that: It also includes a steel strand assembly (12) and an elastic buffer layer (13). The steel strand assembly (12) is connected between the upper embedded steel plate (1) and the lower embedded steel plate (14) and is used to restrict the separation of the upper embedded steel plate (1) and the lower embedded steel plate (14) when they slide relative to each other and the sliding amount exceeds a set range to prevent the beam from falling. The elastic buffer layer (13) is disposed between the steel strand assembly (12) and the upper embedded steel plate (1) and the lower embedded steel plate (14).

2. The anti-fall beam separation friction pendulum support according to claim 1, characterized in that: The steel strand assembly (12) includes multiple steel strands, with each steel strand having its two ends fixedly connected to the upper embedded steel plate (1) and the lower embedded steel plate (14) respectively, and the multiple steel strands are arranged at intervals along the circumference of the upper embedded steel plate (1) and the lower embedded steel plate (14).

3. The anti-fall beam separation friction pendulum support according to claim 2, characterized in that: The elastic buffer layer (13) is disposed between the steel strand assembly (12) and the upper embedded steel plate (1) and between the steel strand assembly (12) and the lower embedded steel plate (14) to provide elastic buffer when the steel strand assembly (12) is subjected to pulling impact.

4. The anti-fall beam separation friction pendulum support according to claim 1, characterized in that: The spherical sliding plate (9) has a concave spherical surface with the opening facing upwards, the spherical crown liner (4) has a convex spherical surface that is adapted to the concave spherical surface, the curved friction pair (5) is the sliding friction surface between the convex spherical surface and the concave spherical surface; the shock-absorbing sliding plate (6) is fitted between the spherical sliding plate (9) and the lower connecting plate (7) to provide shock absorption and damping when the friction pendulum slides.

5. The anti-fall beam separation friction pendulum support according to claim 1, characterized in that: It also includes a bottom anchor (8), a support plate (11) and a lower anchor bolt (15); the bottom anchor (8) and the support plate (11) are both fixedly connected to the lower anchor (10), and the lower anchor (10) is fixedly connected to the lower embedded steel plate (14) by the lower anchor bolt (15).

6. The anti-fall beam separation friction pendulum support according to claim 1, characterized in that: It also includes a limiting device, which is fixedly connected to the lower embedded steel plate (14) and includes a fixed straight plate (16), a U-shaped fixed plate (17), a sliding long plate (18) and a fixing bolt (19); the U-shaped fixed plate (17) and the fixed straight plate (16) are arranged opposite to each other on the lower embedded steel plate (14), the sliding long plate (18) is slidably arranged between the U-shaped fixed plate (17) and the fixed straight plate (16), and the fixing bolt (19) is used to fix the sliding long plate (18) to the fixed straight plate (16) or the U-shaped fixed plate (17).

7. A type of anti-fall beam separation friction pendulum support according to claim 6, characterized in that: The limiting device further includes an adjusting screw (20), a spring (21), and a rotating disk (22); the rotating disk (22) is rotatably connected to the fixed straight plate (16), the adjusting screw (20) is connected to the rotating disk (22) in a transmission manner, the spring (21) is sleeved on the adjusting screw (20), and one end of the spring (21) abuts against the fixed straight plate (16), and the other end abuts against the sliding long plate (18), for applying an elastic restoring force to the sliding long plate (18).

8. A type of anti-fall beam separation friction pendulum support according to claim 7, characterized in that: The limiting device further includes a sliding limiting plate (23), a fixed limiting plate (24), a rotating limiting plate (25), a fixed round rod (26), and a limiting cylinder (27); the fixed limiting plate (24) is fixedly connected to the fixed straight plate (16) or the U-shaped fixed plate (17), the sliding limiting plate (23) is slidably connected to the fixed limiting plate (24), the rotating limiting plate (25) is rotatably connected to the fixed limiting plate (24) through the fixed round rod (26), and the limiting cylinder (27) is fixedly disposed at the end of the rotating limiting plate (25) to limit the sliding range of the sliding plate (18).

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