Three-dimensional seismic isolation bearing

Abstract

The three-dimensional seismic isolation support includes a longitudinal friction pendulum assembly arranged in the longitudinal direction and a transverse friction pendulum assembly arranged in the transverse direction and cross-distributed with the longitudinal friction pendulum assembly, and is characterized in that: the transverse friction pendulum assembly is supported above the longitudinal plate friction pendulum assembly by a vertical seismic isolator, and the longitudinal friction pendulum assembly, the vertical seismic isolator and the transverse friction pendulum assembly are vertically connected by a double-layer anti-pullout assembly, and the double-layer anti-pullout assembly limits the transverse friction of the longitudinal friction pendulum assembly and limits the longitudinal friction of the transverse friction pendulum assembly. The present invention sets a vertical seismic isolator between the longitudinal friction pendulum assembly and the transverse friction pendulum assembly, which plays a role of vertical seismic isolation, ensures the reliability of horizontal seismic isolation, effectively reduces the internal stress of the vertical seismic isolator, prolongs the fatigue life of the vertical seismic isolator, improves the vertical seismic isolation capacity, and realizes reliable and effective anti-pullout.

Description

Technical Field

[0001] The invention relates to a three-dimensional seismic isolation support and belongs to the field of seismic isolation / vibration of engineering structures. Background Art

[0002] At present, the commonly used horizontal seismic isolation devices are divided into two categories: rubber bearings and friction pendulum bearings. Both types of products have good effects in isolating "horizontal earthquakes", but the vertical shock (vibration) reduction effects are not ideal. The seismic isolation and energy dissipation principle of the friction pendulum bearing is to use the friction sliding layer to extend the self-seismic period of the structure to greatly reduce the structural dynamic amplification effect caused by the earthquake. At the same time, the friction between the sliding surface of the friction pendulum and the slider can effectively consume seismic energy and reduce the structural earthquake input. Although the friction pendulum bearing has the ability to effectively isolate horizontal earthquakes, its vertical seismic isolation capacity is weak and it cannot bear vertical pull-out forces, which greatly limits the widespread application of friction pendulum bearings. In view of the pull-out problems that are prone to occur on subway covers and high-rise buildings in high-intensity areas, additional pull-out devices are currently required. A single product cannot achieve good coordinated shock (vibration) reduction effects and anti-pull-out functions in the horizontal and vertical directions. Summary of the invention

[0003] The three-dimensional seismic isolation bearing provided by the present invention has a vertical seismic isolator arranged between the longitudinal friction pendulum assembly and the transverse friction pendulum assembly, which plays a role of vertical seismic isolation, ensures the reliability of horizontal seismic isolation, effectively reduces the internal stress of the vertical seismic isolator, prolongs the fatigue life of the vertical seismic isolator, improves the vertical seismic isolation capacity, and realizes reliable and effective pull-out resistance.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A three-dimensional seismic isolation bearing comprises a longitudinal friction pendulum assembly arranged in the longitudinal direction and a transverse friction pendulum assembly arranged in the transverse direction and cross-distributed with the longitudinal friction pendulum assembly, wherein the transverse friction pendulum assembly is supported above the longitudinal plate friction pendulum assembly by a vertical seismic isolator, the longitudinal friction pendulum assembly, the vertical seismic isolator and the transverse friction pendulum assembly are vertically connected by a double-layer anti-pullout assembly, and the double-layer anti-pullout assembly limits the transverse friction of the longitudinal friction pendulum assembly and limits the longitudinal friction of the transverse friction pendulum assembly.

[0006] Preferably, the double-layer anti-pull-out assembly includes a lower anti-pull-out assembly vertically connecting the longitudinal friction pendulum assembly and the vertical seismic isolator, and an upper anti-pull-out assembly vertically connecting the vertical seismic isolator and the transverse friction pendulum assembly. The lower anti-pull-out assembly vertically penetrates the vertical seismic isolator and extends into the longitudinal friction pendulum assembly, and the upper anti-pull-out assembly is arranged on both sides of the transverse friction pendulum assembly.

[0007] Preferably, the longitudinal friction pendulum assembly includes a lower seat plate arranged along the longitudinal direction and a lower lining plate forming a longitudinal friction pair with the lower seat plate, the top surface of the lower seat plate is a concave arc surface that is concave downward, the bottom surface of the lower lining plate is an arc surface that matches the top surface of the lower seat plate, and a T-shaped groove arranged along the longitudinal direction and with an inverted T-shaped cross-section is provided on the lower seat plate. The lower end guide of the lower anti-pullout assembly extends into the T-shaped groove, and the upper end is connected to the vertical seismic isolator to form a vertical connection between the longitudinal friction pendulum assembly and the vertical seismic isolator.

[0008] Preferably, the vertical seismic isolator includes a rubber bearing arranged vertically, an upper connecting steel plate fixed to the top of the rubber bearing and a lower connecting steel plate fixed to the bottom of the rubber bearing, the lower lining plate is fixed to the bottom of the lower connecting steel plate, the lower anti-pull-out assembly guide fits through the vertical seismic isolator, and the upper end of the lower anti-pull-out assembly is connected to the upper connecting steel plate.

[0009] Preferably, the lower layer anti-pullout assembly comprises a lower pull rod and an upper pull rod coaxially connected to the lower pull rod, the lower pull rod guide fits into the T-shaped groove, and the upper pull rod is connected to the upper connecting steel plate.

[0010] Preferably, the bottom end of the lower pull rod is a square bottom block that cooperates with the T-shaped groove, the top end of the upper pull rod is a circular top block, and a sink hole that cooperates with the circular top block is opened on the top surface of the upper connecting steel plate. The circular top block is embedded in the sink hole, and the lower pull rod passes through the lower lining plate and the square bottom block extends into the T-shaped groove to limit the lateral movement of the lower lining plate relative to the lower seat plate.

[0011] Preferably, the lateral friction pendulum assembly includes an upper lining plate placed on the upper connecting steel plate, an upper seat plate arranged above the upper lining plate and forming a lateral friction pair with the top surface of the upper lining plate, the bottom surface of the upper seat plate is an upwardly concave arc surface, the top surface of the upper lining plate is an arc surface matching the bottom surface of the upper seat plate, and the upper anti-pullout assembly is symmetrically arranged on both sides of the upper seat plate and vertically connects the upper seat plate and the upper connecting steel plate.

[0012] Preferably, the top surface of the upper connecting steel plate is a concave spherical surface, and the bottom surface of the upper lining plate forms a spherical fit with the top surface of the upper connecting steel plate.

[0013] Preferably, the upper anti-pull-out assembly includes anti-pull-out buckle plates symmetrically arranged on both sides of the upper seat plate, the anti-pull-out buckle plates are arranged vertically, the upper end of the anti-pull-out buckle plate has an upper connecting groove arranged horizontally and opening downward, the side surface of the upper seat plate has an upper seat plate connecting convex edge cooperating with the upper connecting groove, the lower end of the anti-pull-out buckle plate has a lower connecting groove arranged horizontally and opening upward, the upper connecting steel plate has a steel plate connecting convex edge cooperating with the lower connecting groove, the upper seat plate connecting convex edge guide fits into the upper connecting groove, the steel plate connecting convex edge guide fits into the lower connecting groove to vertically connect the upper seat plate and the upper connecting steel plate and limit the longitudinal movement of the upper lining plate relative to the upper seat plate.

[0014] Preferably, the top surface of the lower seat plate, the bottom surface of the upper seat plate and the top surface of the upper connecting steel plate are all fitted with fixed stainless steel plates, and the bottom surface of the lower lining plate, the bottom surface of the upper lining plate and the top panel of the upper lining plate are all fitted with fixed wear-resistant plates that frictionally match the stainless steel plates.

[0015] The beneficial effects of the invention are:

[0016] 1. The three-dimensional seismic isolation support of the present invention has a vertical seismic isolator arranged between the longitudinal friction pendulum assembly and the transverse friction pendulum assembly to provide vertical seismic isolation capability and play a role of vertical seismic isolation. The longitudinal friction pendulum assembly and the transverse friction pendulum assembly are cross-distributed, and the friction motion synthesized by the longitudinal friction pendulum assembly and the transverse friction pendulum assembly consumes horizontal vibration energy and plays a role of horizontal seismic isolation. The double-layer anti-pulling assembly vertically connects the longitudinal friction pendulum assembly, the vertical seismic isolator and the transverse friction pendulum assembly, which not only plays a role of anti-pulling, but also limits the transverse friction of the longitudinal friction pendulum assembly and the longitudinal friction of the transverse friction pendulum assembly, thereby ensuring the stability of the movement directions of the longitudinal friction pendulum assembly and the transverse friction pendulum assembly and ensuring the reliability of horizontal seismic isolation. The vertical seismic isolator is arranged between the longitudinal friction pendulum assembly and the transverse friction pendulum assembly. The friction motion of the longitudinal friction pair and the motion of the transverse friction pair will not drive the vertical seismic isolator to form shear deformation, thereby effectively reducing the internal stress of the vertical seismic isolator, extending the fatigue life of the vertical seismic isolator and improving the vertical seismic isolation capability.

[0017] 2. The double-layer anti-pull-out assembly includes an upper anti-pull-out assembly and a lower anti-pull-out assembly. The lower anti-pull-out assembly vertically penetrates the vertical seismic isolator and is arranged inside the support without occupying the external space of the support. The upper end of the lower anti-pull-out assembly is connected to the upper connecting steel plate, and the lower end is connected to the lower seat plate. The connection is reliable to avoid separation, and the deformation of the rubber support is guided to reduce the shear force of the rubber support. The upper anti-pull-out assembly is arranged on both sides of the lateral friction pendulum assembly. The upper end of the upper anti-pull-out assembly is connected to the upper seat plate, and the lower end is connected to the upper connecting steel plate. The upper connecting steel plate serves as a connector between the upper pulling assembly and the lower pulling assembly to ensure the connection reliability of the double-layer pulling assembly and achieve reliable and effective anti-pull-out. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional seismic isolation bearing of the present invention.

[0019] Figure 2 This is a schematic diagram of the decomposition of the three-dimensional seismic isolation bearing.

[0020] Figure 3 It is a transverse cross-sectional view of the three-dimensional seismic isolation bearing.

[0021] Figure 4 Schematic diagram of the pull-down rod.

[0022] Figure 5Schematic diagram of the pull-up rod.

[0023] Figure 6 Schematic diagram of the upper connecting steel plate.

[0024] Figure 7 Schematic diagram of the tensile gusset plate. DETAILED DESCRIPTION

[0025] Combine the following Figures 1 to 7 The embodiments of the present invention are described in detail.

[0026] A three-dimensional seismic isolation bearing comprises a longitudinal friction pendulum assembly 1 arranged in the longitudinal direction and a transverse friction pendulum assembly 2 arranged in the transverse direction and cross-distributed with the longitudinal friction pendulum assembly 1, wherein the transverse friction pendulum assembly 2 is supported above the longitudinal plate friction pendulum assembly 1 by a vertical seismic isolator 3, the longitudinal friction pendulum assembly 1, the vertical seismic isolator 3 and the transverse friction pendulum assembly 2 are vertically connected by a double-layer anti-pullout assembly 4, and the double-layer anti-pullout assembly 4 limits the transverse friction of the longitudinal friction pendulum assembly 1 and limits the longitudinal friction of the transverse friction pendulum assembly 2.

[0027] The three-dimensional seismic isolation bearing described above is provided with a vertical seismic isolator 3 between the longitudinal friction pendulum assembly 1 and the transverse friction pendulum assembly 2 to provide vertical seismic isolation capability and play a role in vertical seismic isolation. The longitudinal friction pendulum assembly 1 and the transverse friction pendulum assembly 2 are cross-distributed, and the friction motion synthesized by the longitudinal friction pendulum assembly 1 and the transverse friction pendulum assembly 2 consumes the horizontal vibration energy and plays a role in horizontal seismic isolation. The double-layer anti-pulling component 4 vertically connects the longitudinal friction pendulum assembly 1, the vertical seismic isolator 3 and the transverse friction pendulum assembly 2, which not only plays a role in resisting pulling, but also limits the transverse friction of the longitudinal friction pendulum assembly 1 and the longitudinal friction of the transverse friction pendulum assembly 2, thereby ensuring the stability of the movement direction of the longitudinal friction pendulum assembly 1 and the transverse friction pendulum assembly 2 and ensuring the reliability of horizontal seismic isolation. The vertical seismic isolator 3 is arranged between the longitudinal friction pendulum assembly 1 and the transverse friction pendulum assembly 2. The friction motion of the longitudinal friction pair and the motion of the transverse friction pair will not drive the vertical seismic isolator to form shear deformation, thereby effectively reducing the internal stress of the vertical seismic isolator 3, extending the fatigue life of the vertical seismic isolator, and improving the vertical seismic isolation capability.

[0028] Among them, the double-layer anti-pull-out component 4 includes a lower anti-pull-out component 5 vertically connecting the longitudinal friction pendulum component 1 and the vertical seismic isolator 3, and an upper anti-pull-out component 6 vertically connecting the vertical seismic isolator 3 and the transverse friction pendulum component 2. The lower anti-pull-out component 5 vertically penetrates the vertical seismic isolator 3 and extends into the longitudinal friction pendulum component 1, and the upper anti-pull-out component 6 is arranged on both sides of the transverse friction pendulum component 2. The double-layer anti-pull-out component 4 is divided into a lower anti-pull-out component 5 and an upper anti-pull-out component 6. The lower anti-pull-out component 5 connects the longitudinal friction pendulum component 1 and the vertical seismic isolator 3, and is arranged inside the support, does not occupy the peripheral space of the support, and improves the compactness of the structure. The lower anti-pull-out component 5 moves longitudinally synchronously with the longitudinal friction pair, has better connection stability, is not easy to separate, and improves the reliability of anti-pull-out. The lower anti-pull-out component 5 not only connects the longitudinal friction pendulum component 1 and the vertical seismic isolator 3, but also guides the deformation of the vertical seismic isolator through the penetration of the lower anti-pull-out component 5. The vertical seismic isolator deforms along the lower pull-out component 5, reduces shear stress, and extends fatigue life.

[0029] Among them, the longitudinal friction pendulum assembly 1 includes a lower seat plate 11 arranged longitudinally and a lower lining plate 12 forming a longitudinal friction pair with the lower seat plate 11. The top surface of the lower seat plate 11 is a concave arc surface that is concave downward, and the bottom surface of the lower lining plate 12 is an arc surface that matches the top surface of the lower seat plate. The lower seat plate 11 is provided with a T-shaped groove 13 that is arranged longitudinally and has an inverted T-shaped cross-section. The lower end guide of the lower anti-pullout assembly 5 extends into the T-shaped groove 13, and the upper end is connected to the vertical seismic isolator 3 to form a vertical connection between the longitudinal friction pendulum assembly 1 and the vertical seismic isolator 3. It can be seen from the accompanying drawings that the T-shaped groove 13 is opened on the bottom surface of the lower seat plate 11, and is a strip groove arranged longitudinally. The lower end guide of the lower anti-pullout component 5 extends into the T-shaped groove 13, and can move longitudinally with the lower lining plate 12. The cross-section of the T-shaped groove 13 is an inverted T-shape. While hooking the lower end of the lower anti-pullout component 5 vertically, the cooperation between the lower anti-pullout component 5 and the T-shaped groove 13 limits the lateral movement of the lower lining plate 12 on the lower seat plate 11, forming a lateral limit for the longitudinal friction pair, thereby limiting the lateral friction of the longitudinal friction pendulum component 1.

[0030] Among them, the vertical seismic isolator 3 includes a rubber bearing 31 arranged vertically, an upper connecting steel plate 32 fixed to the top of the rubber bearing 31 and a lower connecting steel plate 33 fixed to the bottom of the rubber bearing 31, the lower lining plate 12 is fixed to the bottom of the lower connecting steel plate 12, the lower anti-pull-out component 5 is guided and cooperated through the vertical seismic isolator 3, and the upper end of the lower anti-pull-out component 5 is connected to the upper connecting steel plate 32. The lower connecting steel plate 33 and the upper connecting steel plate 32 are connected to the rubber bearing 31. The lower connecting steel plate 33 is fixed to the lower lining plate 12. The lower end of the lower anti-pull-out component 5 passes through the lower lining plate 12 and is connected to the lower seat plate 11. The upper connecting steel plate 32 is connected to the upper end of the lower anti-pull-out component 5, which is equivalent to passing the vertical seismic isolator 3 on the lower anti-pull-out component 5. The lower lining plate 12 drives the anti-pull-out component 5 and the vertical seismic isolator 3 to move longitudinally along the lower seat plate 11 synchronously. The lower anti-pull-out component 5 vertically connects the vertical seismic isolator 3 and the lower seat plate 11, and guides the deformation of the vertical seismic isolator 3, thereby reducing the shear deformation of the rubber bearing 31, extending the fatigue life of the rubber bearing 31, and improving the structural reliability.

[0031] The lower layer anti-pullout assembly 5 includes a lower tie rod 51 and an upper tie rod 52 coaxially connected to the lower tie rod 51. The lower tie rod 51 is guided and fits into the T-shaped groove 13, and the upper tie rod 52 is connected to the upper connecting steel plate 32. The connection combination of the lower tie rod 51 and the upper tie rod 52 facilitates the vertical connection between the vertical seismic isolator 3 and the longitudinal friction pendulum assembly 1. The lower tie rod 51 is matched with the T-shaped groove 13, the upper tie rod 52 is connected to the upper connecting steel plate 32, and then the upper tie rod 52 and the lower tie rod 51 are coaxially connected to form a vertical connection between the vertical seismic isolator 3 and the longitudinal friction pendulum assembly 1.

[0032] The bottom end of the lower tie rod 51 is a square bottom block 511 that matches the T-shaped groove, the top end of the upper tie rod 52 is a circular top block 521, a sink hole 321 that matches the circular top block 521 is opened on the top surface of the upper connecting steel plate 32, and the circular top block 521 is embedded in the sink hole 321. The lower tie rod 51 passes through the lower lining plate 12 and the square bottom block 511 extends into the T-shaped groove 13 to limit the lateral movement of the lower lining plate 12 relative to the lower seat plate 11. The cooperation of the circular top block 521 and the sink hole 321 connects the top end of the upper tie rod 52 with the upper connecting steel plate 32, and the cooperation of the square bottom block 511 and the T-shaped groove 13 connects the bottom end of the lower tie rod 51 with the lower seat plate 11. At the same time, the cooperation of the square bottom block 511 and the T-shaped groove 13 limits the lateral position of the lower lining plate 12 on the lower seat plate 11, forming a lateral limit for the longitudinal friction pair, and limiting the lateral friction of the longitudinal friction pendulum assembly 1.

[0033] The transverse friction pendulum assembly 2 includes an upper lining plate 21 placed on an upper connecting steel plate 32, an upper seat plate 22 arranged above the upper lining plate 21 and forming a transverse friction pair with the top surface of the upper lining plate 21, the bottom surface of the upper seat plate 22 is an upwardly concave arc surface, the top surface of the upper lining plate 21 is an arc surface matched with the bottom surface of the upper seat plate 22, and the upper anti-pullout assembly 6 is symmetrically arranged on both sides of the upper seat plate 22, and vertically connects the upper seat plate 22 and the upper connecting steel plate 32. A transverse friction pair is formed between the upper seat plate 22 and the upper lining plate 21, and the upper anti-pullout assembly 6 is arranged on both sides of the upper seat plate 22, that is, it plays the role of connecting the upper seat plate 22 and the upper connecting steel plate 32, and limits the longitudinal position of the upper lining plate 21, limits the longitudinal displacement of the upper lining plate 21 relative to the upper seat plate 22, forms a longitudinal limit to the transverse friction pair, and limits the longitudinal friction of the transverse friction pendulum assembly 2.

[0034] The top surface of the upper connecting steel plate 32 is a concave spherical surface, and the bottom surface of the upper lining plate 21 forms a spherical fit with the top surface of the upper connecting steel plate. The top and bottom surfaces of the upper lining plate 21 both have a friction pair structure, the top surface forms a lateral friction pair with the upper seat plate 22, and the bottom surface forms a spherical friction pair with the top surface of the upper connecting steel plate 32. When the upper seat plate and the lower seat plate are relatively displaced, the spherical fit is used to adjust the angle of the upper seat plate, so that the upper seat plate can be kept in a vertical arrangement, and the upper structure on the upper seat plate can be kept vertical.

[0035] Among them, the upper anti-pull-out component 6 includes an anti-pull-out buckle plate 61 symmetrically arranged on both sides of the upper seat plate 22, the anti-pull-out buckle plate 61 is arranged vertically, the upper end of the anti-pull-out buckle plate 61 has an upper connecting groove 62 arranged horizontally and opening downward, the side of the upper seat plate 22 has an upper seat plate connecting flange 23 cooperating with the upper connecting groove 62, the lower end of the anti-pull-out buckle plate 61 has a lower connecting groove 63 arranged horizontally and opening upward, the upper connecting steel plate 32 has a steel plate connecting flange 322 cooperating with the lower connecting groove 63, the upper seat plate connecting flange 23 guides and cooperates to extend into the upper connecting groove 62, the steel plate connecting flange 322 guides and cooperates to extend into the lower connecting groove 63 to vertically connect the upper seat plate 22 and the upper connecting steel plate 32 and limit the longitudinal movement of the upper lining plate 21 relative to the upper seat plate 22. The anti-pulling buckle plate 61 vertically connects the upper seat plate 22 and the upper connecting steel plate 32, and is symmetrically arranged on both sides of the upper seat plate 22, restricting the upper lining plate 31 between the two anti-pulling buckle plates 61, limiting the longitudinal movement of the upper lining plate 21 relative to the upper seat plate 22, forming a longitudinal limit for the lateral friction pair, and limiting the longitudinal friction of the lateral friction pendulum assembly 2.

[0036] The top surface of the lower seat plate 11, the bottom surface of the upper seat plate 22 and the top surface of the upper connecting steel plate 32 are all fitted with the stainless steel plate 7, and the bottom surface of the lower lining plate 21, the bottom surface of the upper lining plate 21 and the top surface of the upper lining plate 21 are all fitted with the wear-resistant plate 8 that is frictionally matched with the stainless steel plate 7. The frictional match between the stainless steel plate and the wear-resistant plate is used on each friction pair to ensure the friction reliability and effectiveness of the friction pair.

[0037] The above is a complete description of the technical solutions of the embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the described embodiments are only part of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

Claims

1. A three-dimensional seismic isolation support, comprising a longitudinal friction pendulum assembly arranged in the longitudinal direction and a transverse friction pendulum assembly arranged in the transverse direction and cross-distributed with the longitudinal friction pendulum assembly, characterized in that: The transverse friction pendulum assembly is supported above the longitudinal plate friction pendulum assembly through a vertical isolator, and the longitudinal friction pendulum assembly, the vertical isolator and the transverse friction pendulum assembly are vertically connected through a double-layer anti-pullout assembly, which limits the transverse friction of the longitudinal friction pendulum assembly and the longitudinal friction of the transverse friction pendulum assembly; The double-layer anti-pullout assembly comprises a lower anti-pullout assembly vertically connecting the longitudinal friction pendulum assembly and the vertical seismic isolator, and an upper anti-pullout assembly vertically connecting the vertical seismic isolator and the transverse friction pendulum assembly. The lower anti-pullout assembly vertically penetrates the vertical seismic isolator and extends into the longitudinal friction pendulum assembly, and the upper anti-pullout assembly is arranged on both sides of the transverse friction pendulum assembly. The longitudinal friction pendulum assembly comprises a lower seat plate arranged in the longitudinal direction and a lower lining plate forming a longitudinal friction pair with the lower seat plate, the top surface of the lower seat plate is a concave arc surface that is concave downward, the bottom surface of the lower lining plate is an arc surface that matches the top surface of the lower seat plate, and a T-shaped groove arranged in the longitudinal direction and having an inverted T-shaped cross section is provided on the lower seat plate, the lower end guide of the lower anti-pullout assembly fits into the T-shaped groove, and the upper end is connected to the vertical seismic isolator, forming a vertical connection between the longitudinal friction pendulum assembly and the vertical seismic isolator; The vertical seismic isolator comprises a rubber support arranged vertically, an upper connecting steel plate fixed to the top of the rubber support and a lower connecting steel plate fixed to the bottom of the rubber support, a lower lining plate fixed to the bottom of the lower connecting steel plate, a lower layer anti-pullout assembly guide fits through the vertical seismic isolator, and the upper end of the lower layer anti-pullout assembly is connected to the upper connecting steel plate; The lateral friction pendulum assembly comprises an upper lining plate placed on the upper connecting steel plate, an upper seat plate arranged above the upper lining plate and forming a lateral friction pair with the top surface of the upper lining plate, the bottom surface of the upper seat plate is an upwardly concave arc surface, the top surface of the upper lining plate is an arc surface matched with the bottom surface of the upper seat plate, and the upper anti-pullout assembly is symmetrically arranged on both sides of the upper seat plate and vertically connects the upper seat plate and the upper connecting steel plate; The upper anti-pull-out component includes anti-pull-out buckle plates symmetrically arranged on both sides of the upper seat plate, the anti-pull-out buckle plates are arranged vertically, the upper end of the anti-pull-out buckle plate has an upper connecting groove arranged horizontally and opening downward, the side of the upper seat plate has an upper seat plate connecting convex edge cooperating with the upper connecting groove, the lower end of the anti-pull-out buckle plate has a lower connecting groove arranged horizontally and opening upward, the upper connecting steel plate has a steel plate connecting convex edge cooperating with the lower connecting groove, the upper seat plate connecting convex edge guide fits into the upper connecting groove, the steel plate connecting convex edge guide fits into the lower connecting groove to vertically connect the upper seat plate and the upper connecting steel plate and limit the longitudinal movement of the upper lining plate relative to the upper seat plate.

2. The three-dimensional seismic isolation bearing according to claim 1, characterized in that: The lower layer anti-pulling assembly comprises a lower pull rod and an upper pull rod coaxially connected to the lower pull rod, the lower pull rod guide fits into the T-shaped groove, and the upper pull rod is connected to the upper connecting steel plate.

3. The three-dimensional seismic isolation bearing according to claim 2, characterized in that: The bottom end of the lower pull rod is a square bottom block that cooperates with the T-shaped groove, the top end of the upper pull rod is a circular top block, and a sinking hole that cooperates with the circular top block is opened on the top surface of the upper connecting steel plate. The circular top block is embedded in the sinking hole, and the lower pull rod passes through the lower lining plate and the square bottom block extends into the T-shaped groove to limit the lateral movement of the lower lining plate relative to the lower seat plate.

4. The three-dimensional seismic isolation bearing according to claim 1, characterized in that: The top surface of the upper connecting steel plate is a concave spherical surface, and the bottom surface of the upper lining plate and the top surface of the upper connecting steel plate form a spherical fit.

5. The three-dimensional seismic isolation bearing according to claim 4, characterized in that: The top surface of the lower seat plate, the bottom surface of the upper seat plate and the top surface of the upper connecting steel plate are all fitted with stainless steel plates, and the bottom surface of the lower lining plate, the bottom surface of the upper lining plate and the top panel of the upper lining plate are all fitted with wear-resistant plates that frictionally match the stainless steel plates.

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