A steel damping and seismic isolation bearing

Abstract

The present invention relates to a steel damping seismic isolation bearing, comprising an upper top plate, a spherical crown, an intermediate lining plate and a lower bottom plate arranged in sequence from top to bottom, a sliding friction pair is arranged between the upper top plate and the spherical crown, between the spherical crown and the intermediate lining plate, and between the intermediate lining plate and the lower bottom plate, and a directional slideway and a steel damping component are arranged between the upper top plate and the spherical crown, and between the intermediate lining plate and the lower bottom plate. Compared with the prior art, the present invention can meet the free expansion and contraction of the main beam under the action of variable loads such as temperature under normal operation of the bridge; when an earthquake occurs, the pins are sheared off, and the limit blocks on both sides of the directional slideway fail, so that the seismic force on the fixed piers no longer increases, and the seismic isolation effect is played. At the same time, the steel damping components on each pier play a role, and the reciprocating motion of the steel damping components dissipates the seismic force to prevent the piers and beams from being too displaced relative to each other; the present invention has a simple structure, obvious effect, is economical and practical, and can meet product design requirements.

Description

Technical Field

[0001] The invention belongs to the technical field of vibration reduction and isolation components of bridge engineering, and relates to a steel damping and vibration reduction and isolation support. Background Art

[0002] The bearing is a functional component that connects the main beam and the pier of the bridge. Fixed bearings can realize the displacement constraint of the main beam under normal use of the bridge; movable bearings can meet the expansion and contraction of the main beam under normal use. In a simply supported beam bridge, a fixed bearing is used at one end of the main beam and a movable bearing is used at the other end; in a continuous beam bridge, only one pier in a bridge uses a fixed bearing, and the remaining piers are arranged with movable bearings.

[0003] Under the action of seismic load, the movable piers will have a large relative displacement between the piers and beams because there is no connection device. Most of the seismic force is borne by the fixed piers. In rare earthquakes, the fixed piers are severely damaged due to the lack of energy dissipation devices.

[0004] The Chinese invention patent with publication number CN110306426A relates to an elastic-plastic structural damping bearing, including a support module and a shock-absorbing module. Among them, the support module includes an upper top plate, a spherical crown, an intermediate lining plate and a lower bottom plate stacked from top to bottom. Sliding surfaces that move relative to each other along the longitudinal direction and the transverse direction of the bridge are processed between the upper top plate and the spherical crown, and between the lower bottom plate and the intermediate lining plate, respectively. The spherical crown and the intermediate lining plate are connected by spherical contact; the shock-absorbing module includes a limiting energy-absorbing component arranged along the longitudinal direction and the transverse direction of the bridge, respectively. The two ends of the limiting energy-absorbing component arranged along the longitudinal direction of the bridge are respectively connected to the upper top plate and the spherical crown, and the two ends of the limiting energy-absorbing component arranged along the transverse direction of the bridge are respectively connected to the lower bottom plate and the intermediate lining plate. This technical solution can adapt to the expansion and contraction deformation of the main beam under the action of temperature. The annular component plays both the role of energy consumption and limiting. There is no problem of oil leakage, blockage, etc. It can be disassembled and installed according to actual needs, which is convenient for daily bearing maintenance and post-earthquake replacement. However, the arc structure added in the middle of the circular ring part of the damping bearing will affect the deformation of the steel damping component. It cannot match the annular structure well, and the entire steel damping component is prone to local damage during the deformation process; each small circular ring component needs to be connected by winding steel strands, which is very complicated in actual engineering and the connection is extremely unstable; the various circular rings are connected in series and require anti-buckling rods. Since the anti-buckling rods are long, the required cross-section will be larger, which is not reasonable in engineering design; the limited capacity shear pins are dispersed in the slideway. Due to tolerance issues, it is difficult to control the simultaneous shearing of each shear pin, which will result in a large difference between the actual bearing fuse force and the designed fuse force. At the same time, after the limited capacity shear pin is broken, its fracture can easily hinder the normal sliding of the slideway. The steel damping component in the present invention is cut and formed in one piece, and there is no connection problem. Only a limit groove and a pin are needed to achieve the anti-buckling effect; the circular ring and the S-shape can achieve good matching, and the parallel connection between the two can increase the damping force, and the series connection of each small component can increase the deformation capacity of the steel damping; the limit block is set at the end of the slideway, which can reduce the error between the designed fuse force and the actual fuse force, and the port of the capacity-limiting shear pin does not affect the normal sliding of the bearing friction surface. Summary of the invention

[0005] The purpose of the present invention is to provide a steel damping and seismic isolation bearing, which can meet the normal rotation and expansion of the main beam under normal use conditions. When an earthquake occurs, the structural system conversion is realized so that the movable piers can bear the seismic force, and each pier is subjected to force together, exerting a damping effect and dissipating seismic energy.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A steel damping and seismic isolation bearing comprises an upper top plate, a spherical crown, an intermediate lining plate and a lower bottom plate which are arranged in sequence from top to bottom; sliding friction pairs are arranged between the upper top plate and the spherical crown, between the spherical crown and the intermediate lining plate, and between the intermediate lining plate and the lower bottom plate; and directional slideways and steel damping components are arranged between the upper top plate and the spherical crown, and between the intermediate lining plate and the lower bottom plate.

[0008] Preferably, the sliding friction pair is composed of a stainless steel plate and a polytetrafluoroethylene plate.

[0009] Furthermore, the directional slide between the upper top plate and the ball crown is an upper directional slide, the directional slide between the middle lining plate and the lower bottom plate is a lower directional slide, and the length direction of the upper directional slide is perpendicular to the length direction of the lower directional slide. That is to say, one of the upper directional slide and the lower directional slide is longitudinally oriented and the other is transversely oriented.

[0010] Furthermore, the directional slide includes a slide groove and a slide rail; in the upper directional slide, the slide rail is fixedly arranged at the bottom of the upper top plate, the slide groove is opened at the top of the spherical crown, and a sliding friction pair is arranged between the slide groove and the slide rail; in the lower directional slide, the slide rail is fixedly arranged at the top of the lower bottom plate, the slide groove is opened at the bottom of the middle lining plate, and a sliding friction pair is arranged between the slide groove and the slide rail.

[0011] As an optional technical solution, both ends of the directional slide are provided with limit blocks, limited capacity shear pins, bolts and pads, and the limit blocks are provided with pin holes; the limit blocks are arranged at the bottom of the upper top plate and / or the top of the lower bottom plate, and the limited capacity shear pins pass through the limit blocks and the upper top plate or pass through the limit blocks and the lower bottom plate at the same time, and are fixed by bolts and pads. The pad is attached to the limit block from the other side, and the pad and the limited capacity shear pin are screwed in at the same time by bolts for fixing. Limit blocks can be set at both ends of the directional slide as required. The principle of the limited capacity shear pin is that when the shear force reaches the limit value, the shear pin fails due to shear damage.

[0012] Furthermore, the steel damping component between the upper top plate and the ball crown is an upper steel damping component, and the steel damping component between the middle lining plate and the lower bottom plate is a lower steel damping component; two upper steel damping components are arranged in parallel and parallel to the length direction of the upper directional slide; two lower steel damping components are arranged in parallel and parallel to the length direction of the lower directional slide, that is, the steel damping components are arranged symmetrically in front and behind and in the left and right of the support. The steel damping movement direction of the upper steel damping component is consistent with the length direction of the upper directional slide, and the steel damping movement direction of the lower steel damping component is consistent with the length direction of the lower directional slide.

[0013] Furthermore, both the upper top plate and the lower bottom plate are provided with limit grooves, in which pins connected to the steel damping component are slidably provided, the limit grooves on the upper top plate are parallel to the upper steel damping component, and the limit grooves on the lower bottom plate are parallel to the lower steel damping component. The pins can slide freely along the limit grooves, and the pins are welded to the steel damping component, which can prevent the steel damping from buckling out of the plane during reciprocating motion.

[0014] Preferably, the support may be provided with a unidirectional or bidirectional steel damping component. When a bidirectional steel damping component is provided, the sum of the vertical heights of the steel damping components in two directions should be less than the vertical clearance height between the upper top plate and the lower bottom plate.

[0015] Furthermore, one end of the upper steel damping component is connected to the upper top plate, and the other end is connected to the spherical crown; one end of the lower steel damping component is connected to the lower bottom plate, and the other end is connected to the middle lining plate.

[0016] Furthermore, the spherical crown and the middle lining are both provided with ear plates, the upper top plate and the lower bottom plate are both provided with connecting blocks, one end of the steel damping component is connected to the spherical crown or the middle lining through the ear plate, and the other end is connected to the upper top plate or the lower bottom plate through the connecting block.

[0017] Further, the connection block is a fixed connection block or a movable connection block, the fixed connection block is provided with a round hole adapted to the end of the steel damping component, the movable connection block is provided with a long strip hole adapted to the end of the steel damping component, and the central axis of the long strip hole along the length direction is collinear with the central axis of the matching steel damping component along the length direction. The fixed connection block or the movable connection block is selected according to the needs.

[0018] Furthermore, the support is a fixed support, a two-way movable support or a one-way movable support;

[0019] When the support is a fixed support, both ends of the upper directional slideway and the lower directional slideway are provided with limit blocks, and the connecting blocks on the upper top plate and the lower bottom plate are fixed connecting blocks;

[0020] When the support is a two-way movable support, the connecting blocks on the upper top plate and the lower bottom plate are both movable connecting blocks;

[0021] When the support is a one-way movable support, limit blocks are provided at both ends of the upper directional slide or the lower directional slide; if limit blocks are provided at both ends of the upper directional slide, the connecting blocks on the upper top plate are fixed connecting blocks, and the connecting blocks on the lower bottom plate are movable connecting blocks; if limit blocks are provided at both ends of the lower directional slide, the connecting blocks on the lower bottom plate are fixed connecting blocks, and the connecting blocks on the upper top plate are movable connecting blocks.

[0022] Specifically, there are limit stops at both ends of the directional slideways in both directions of the fixed bearing, one end of the steel damping component is connected to the ear plate of the spherical crown or the middle lining, and the other end is connected to the fixed connecting block of the upper top plate or the lower bottom plate; no limit stops are set at both ends of the directional slideways in both directions of the two-way movable bearing, one end of the steel damping component is connected to the ear plate of the spherical crown or the middle lining, and the other end is connected to the movable connecting block of the upper top plate or the lower bottom plate, so that the bearing can move freely within a certain displacement, and the displacement of free movement needs to be determined according to the needs of the bridge under normal operating conditions; no limit stops are set on both sides of the directional slideway in the movable direction of the unidirectional movable bearing, one end of the steel damping component is connected to the ear plate of the middle lining, and the other end is connected to the movable connecting block of the lower bottom plate or the upper top plate, and there are limit stops on both sides of the directional slideway in the fixed direction, one end of the steel damping component is connected to the ear plate of the spherical crown, and the other end is connected to the fixed connecting block of the upper top plate or the lower bottom plate.

[0023] Among them, when one end of the steel damping component is connected to the movable connection block, the reserved gap must meet the expansion and contraction length of the main beam under normal use conditions, and play a limiting role when an earthquake occurs, so that the steel damping can play a role.

[0024] The present invention realizes the controllable function of the support through the limit stopper. Under normal use and small earthquakes, the limit stopper constrains the displacement of the main beam. Under large earthquakes, in order to prevent the lower structure from being damaged, the limit stopper fails, the bridge system conversion is completed, the displacement of the main beam is released, and then the steel damping component begins to work. By reasonably controlling the limited capacity value of the shear pin and the yield force of the steel damping, the failure mode of the bridge at each stage can be effectively controlled.

[0025] In the present invention, the steel damping component has good mechanical properties and a large deformation capacity. The ring is connected in parallel with the S-shaped steel to improve the yield force of the steel damping, and the series connection between each small component can increase the deformation capacity of the steel damping.

[0026] Compared with the prior art, the present invention has the following characteristics:

[0027] 1) The steel damping and seismic isolation bearing provided by the present invention can meet the free expansion and contraction of the main beam under variable loads such as temperature through the steel damping component under normal operation of the bridge, and the steel damping component does not play a role. When an earthquake occurs, the load on the bridge structure increases, the pins are sheared off, and the limit blocks on both sides of the directional slideway fail, so that the seismic force on the fixed piers no longer increases, playing a role of seismic isolation. At the same time, the steel damping components on each pier play a role, and the reciprocating motion of the steel damping components dissipates the seismic force to prevent the piers and beams from being too far apart.

[0028] 2) The present invention has a simple structure, obvious effect, is economical and practical, and can meet product design requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a top view of the function-controllable unidirectional movable steel damping and seismic isolation bearing in Example 1;

[0030] Figure 2 for Figure 1 AA half section as shown in;

[0031] Figure 3 for Figure 1 BB half-section as shown in;

[0032] Figure 4 It is a schematic diagram of the structure of the limit stopper;

[0033] Figure 5 It is a schematic diagram of the connection structure between the limit stopper and the upper top plate;

[0034] Figure 6 It is a schematic diagram of the matching structure of the movable connection block and the steel damping component;

[0035] Figure 7 It is a schematic diagram of the matching structure of the fixed connection block and the steel damping component;

[0036] Figure 8 A top view of the function-controllable fixed steel damping and seismic isolation bearing in Example 2;

[0037] Fig. 9 for Figure 8 AA half section as shown in;

[0038] Fig.10 for Figure 8 BB half-section as shown in;

[0039] Fig.11 It is a top view of the function-controllable bidirectional movable steel damping and seismic isolation bearing in Example 3;

[0040] Fig.12 for Fig.11 AA half section as shown in;

[0041] Fig.13 for Fig.11 BB half-section as shown in;

[0042] Description of the markings in the figure:

[0043] 1—upper top plate, 2—sliding friction pair, 3—ball crown, 4—middle lining plate, 5—lower bottom plate, 6—steel damping component, 7—directional slideway, 71—slide rail, 72—slide groove, 8—limit block, 81—limited capacity shear pin, 82—pin hole, 83—bolt, 84—shim plate, 9—ear plate, 10—movable connection block, 11—fixed connection block, 12—limit groove, 13—pin. DETAILED DESCRIPTION

[0044] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0045] Embodiment 1:

[0046] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, a function-controllable unidirectional movable steel damping and seismic isolation bearing mainly includes an upper top plate 1, a spherical crown 3, an intermediate lining plate 4, and a lower bottom plate 5. A sliding friction pair 2 is provided between the upper top plate 1 and the spherical crown 3, between the spherical crown 3 and the intermediate lining plate 4, and between the intermediate lining plate 4 and the lower bottom plate 5. A directional slideway 7 is provided between the top plate 1 and the spherical crown 3, and between the intermediate lining plate 4 and the bottom plate 5. Steel damping components 6 are provided in front, behind, and on the left and right of the bearing.

[0047] The directional slide 7 between the upper top plate 1 and the spherical crown 3 is composed of a slide groove 72 and a slide rail 71. The slide rail 71 is connected to the upper top plate 1 as a whole. The slide groove 72 is located on the spherical crown 3. A sliding friction pair 2 is provided between the slide rail 71 and the slide groove 72. The direction of the directional slide 7 between the middle lining plate 4 and the lower bottom plate 5 is perpendicular to the direction of the directional slide 7 between the upper top plate 1 and the spherical crown 3. The slide rail 71 is connected to the lower bottom plate 5 as a whole. The slide groove 72 is located on the middle lining plate 4. A sliding friction pair 2 is provided between the slide rail 71 and the slide groove 72.

[0048] The two ends of the directional slideway 7 between the upper top plate 1 and the spherical crown 3 are provided with limit blocks 8, and the limit blocks 8 have a limited capacity shear pin 81, a pin hole 82, a bolt 83 and a pad 84, such as Figure 4 , Figure 5 shown.

[0049] Steel damping components 6 are provided at the front, back, left and right of the support, one end of one set of steel damping components 6 is connected to the fixed connection block 11 of the upper top plate 1, and the other end is connected to the ear plate 9 of the spherical crown 3, and another set of steel damping components 6 is connected to the movable connection block 10 of the lower bottom plate 5 at one end, and the other end is connected to the ear plate 9 of the middle lining plate 4. The number of circular rings of the steel damping components 6 can be determined according to the actual needs of the support.

[0050] Limiting grooves 12 are respectively provided on the upper top plate 1 and the lower bottom plate 5. The limiting grooves 12 contain pins 13. The pins 13 can slide freely along the limiting grooves 12. The pins 13 are welded to the steel damping component 6 to prevent out-of-plane buckling of the steel damping component during reciprocating motion.

[0051] Embodiment 2:

[0052] like Figure 8 , Fig. 9 and Fig.10 As shown, a function-controllable fixed steel damping and seismic isolation bearing mainly includes an upper top plate 1, a spherical crown 3, an intermediate lining plate 4, and a lower bottom plate 5. A sliding friction pair 2 is arranged between the upper top plate 1 and the spherical crown 3, between the spherical crown 3 and the intermediate lining plate 4, and between the intermediate lining plate 4 and the lower bottom plate 5. A directional slideway 7 is arranged between the top plate 1 and the spherical crown 3, and between the intermediate lining plate 4 and the bottom plate 5. Steel damping components 6 are arranged in front, behind, and on the left and right of the bearing.

[0053] The directional slide 7 between the upper top plate 1 and the spherical crown 3 is composed of a slide groove 72 and a slide rail 71. The slide rail 71 is connected to the upper top plate 1 as a whole. The slide groove 72 is located on the spherical crown 3. A sliding friction pair 2 is provided between the slide rail 71 and the slide groove 72. The direction of the directional slide 7 between the middle lining plate 4 and the lower bottom plate 5 is perpendicular to the direction of the directional slide 7 between the upper top plate 1 and the spherical crown 3. The slide rail 71 is connected to the lower bottom plate 5 as a whole. The slide groove 72 is located on the middle lining plate 4. A sliding friction pair 2 is provided between the slide rail 71 and the slide groove 72.

[0054] Limit blocks 8 are set at both ends of the directional slide 7 between the upper top plate 1 and the spherical crown 3, and limit blocks 8 are also set at both ends of the directional slide 7 between the lower bottom plate 5 and the middle lining plate 4. The limit blocks 8 have limited capacity shear pins 81, pin holes 82, bolts 83 and gaskets 84.

[0055] Steel damping components 6 are provided at the front, back, left and right of the support, one end of one set of steel damping components 6 is connected to the fixed connection block 11 of the upper top plate 1, and the other end is connected to the ear plate 9 of the spherical crown 3; another set of steel damping components 6 is connected to the fixed connection block 11 of the lower bottom plate 5 at one end, and the other end is connected to the ear plate 9 of the middle lining plate 4. The number of circular rings of the steel damping components 6 can be determined according to the actual needs of the support.

[0056] Limiting grooves 12 are respectively provided on the upper top plate 1 and the lower bottom plate 5. The limiting grooves 12 contain pins 13. The pins 13 can slide freely along the limiting grooves 12. The pins 13 are welded to the steel damping component 6 to prevent out-of-plane buckling of the steel damping component during reciprocating motion.

[0057] Embodiment 3:

[0058] like Fig.11 , Fig.12 and Fig.13As shown, a function-controllable bidirectional movable steel damping and seismic isolation bearing mainly includes an upper top plate 1, a spherical crown 3, an intermediate lining plate 4, and a lower bottom plate 5. A sliding friction pair 2 is arranged between the upper top plate 1 and the spherical crown 3, between the spherical crown 3 and the intermediate lining plate 4, and between the intermediate lining plate 4 and the lower bottom plate 5. A directional slideway 7 is arranged between the top plate 1 and the spherical crown 3, and between the intermediate lining plate 4 and the bottom plate 5. Steel damping components 6 are arranged in front, behind, and on the left and right of the bearing.

[0059] The directional slide 7 between the upper top plate 1 and the spherical crown 3 is composed of a slide groove 72 and a slide rail 71. The slide rail 71 is connected to the upper top plate 1 as a whole. The slide groove 72 is located on the spherical crown 3. A sliding friction pair 2 is provided between the slide rail 71 and the slide groove 72. The direction of the directional slide 7 between the middle lining plate 4 and the lower bottom plate 5 is perpendicular to the direction of the directional slide 7 between the upper top plate 1 and the spherical crown 3. The slide rail 71 is connected to the lower bottom plate 5 as a whole. The slide groove 72 is located on the middle lining plate 4. A sliding friction pair 2 is provided between the slide rail 71 and the slide groove 72.

[0060] Steel damping components 6 are provided at the front, back, left and right of the support, one end of one set of steel damping components 6 is connected to the movable connection block 10 of the upper top plate 1, and the other end is connected to the ear plate 9 of the spherical crown 3; another set of steel damping components 6 is connected to the movable connection block 10 of the lower bottom plate 5 at one end, and the other end is connected to the ear plate 9 of the middle lining plate 4. The number of circular rings of the steel damping components 6 can be determined according to the actual needs of the support.

[0061] Limiting grooves 12 are respectively provided on the upper top plate 1 and the lower bottom plate 5. The limiting grooves 12 contain pins 13. The pins 13 can slide freely along the limiting grooves 12. The pins 13 are welded to the steel damping component 6 to prevent out-of-plane buckling of the steel damping component during reciprocating motion.

[0062] Embodiment 4:

[0063] A steel damping and seismic isolation bearing comprises an upper top plate 1, a spherical crown 3, an intermediate lining plate 4 and a lower bottom plate 5 which are arranged in sequence from top to bottom; a sliding friction pair 2 is provided between the upper top plate 1 and the spherical crown 3, between the spherical crown 3 and the intermediate lining plate 4, and between the intermediate lining plate 4 and the lower bottom plate 5; and a directional slideway 7 and a steel damping component 6 are provided between the upper top plate 1 and the spherical crown 3, and between the intermediate lining plate 4 and the lower bottom plate 5.

[0064] Among them, the directional slide 7 between the upper top plate 1 and the spherical crown 3 is an upper directional slide, and the directional slide 7 between the middle lining plate 4 and the lower bottom plate 5 is a lower directional slide. The length direction of the upper directional slide is perpendicular to the length direction of the lower directional slide.

[0065] The directional slide 7 includes a slide groove 72 and a slide rail 71; in the upper directional slide, the slide rail 71 is fixedly arranged at the bottom of the upper top plate 1, the slide groove 72 is opened at the top of the spherical crown 3, and a sliding friction pair 2 is arranged between the slide groove 72 and the slide rail 71; in the lower directional slide, the slide rail 71 is fixedly arranged at the top of the lower bottom plate 5, the slide groove 72 is opened at the bottom of the middle lining plate 4, and a sliding friction pair 2 is arranged between the slide groove 72 and the slide rail 71.

[0066] Both ends of the directional slide 7 are provided with a limit stop block 8, a capacity limiting shear pin 81, a bolt 83 and a gasket 84, and a pin hole 82 is opened on the limit stop block 8; the limit stop block 8 is arranged at the bottom of the upper top plate 1 and / or the top of the lower bottom plate 5, and the capacity limiting shear pin 81 passes through the limit stop block 8 and the upper top plate 1 at the same time or passes through the limit stop block 8 and the lower bottom plate 5 at the same time, and is fixed by bolts 83 and gaskets 84.

[0067] The steel damping component 6 between the upper top plate 1 and the spherical crown 3 is an upper steel damping component, and the steel damping component 6 between the middle lining plate 4 and the lower bottom plate 5 is a lower steel damping component; two upper steel damping components are arranged in parallel and parallel to the length direction of the upper directional slide; two lower steel damping components are arranged in parallel and parallel to the length direction of the lower directional slide.

[0068] Both the upper top plate 1 and the lower bottom plate 5 are provided with a limiting groove 12, in which a pin 13 connected to the steel damping component 6 is slidably provided. The limiting groove 12 on the upper top plate 1 is parallel to the upper steel damping component, and the limiting groove 12 on the lower bottom plate 5 is parallel to the lower steel damping component.

[0069] One end of the upper steel damping component is connected to the upper top plate 1 , and the other end is connected to the spherical crown 3 ; one end of the lower steel damping component is connected to the lower bottom plate 5 , and the other end is connected to the middle lining plate 4 .

[0070] Ear plates 9 are provided on the spherical crown 3 and the middle lining plate 4, and connecting blocks are provided on the upper top plate 1 and the lower bottom plate 5. One end of the steel damping component 6 is connected to the spherical crown 3 or the middle lining plate 4 through the ear plate 9, and the other end is connected to the upper top plate 1 or the lower bottom plate 5 through the connecting block.

[0071] The connecting block is a fixed connecting block 11 or a movable connecting block 10. The fixed connecting block 11 is provided with a circular hole adapted to the end of the steel damping component 6. The movable connecting block 10 is provided with a long strip hole adapted to the end of the steel damping component 6. The central axis of the long strip hole along the length direction is collinear with the central axis of the matching steel damping component 6 along the length direction.

[0072] In this embodiment, the support is a fixed support, and both ends of the upper directional slide and the lower directional slide are provided with limit blocks 8, and the connecting blocks on the upper top plate 1 and the lower bottom plate 5 are both fixed connecting blocks 11.

[0073] Embodiment 5:

[0074] In this embodiment, the support is a two-way movable support, and the connecting blocks on the upper top plate 1 and the lower bottom plate 5 are both movable connecting blocks 11. The rest is the same as in the fourth embodiment.

[0075] Embodiment 6:

[0076] In this embodiment, the support is a one-way movable support. Limit blocks 8 are provided at both ends of the upper directional slideway, the connecting block on the upper top plate 1 is a fixed connecting block 11, and the connecting block on the lower bottom plate 5 is a movable connecting block 11. The rest is the same as in embodiment 4.

[0077] Embodiment 7:

[0078] In this embodiment, the support is a one-way movable support. Limit blocks 8 are provided at both ends of the lower directional slideway, the connecting block on the lower bottom plate 5 is a fixed connecting block 11, and the connecting block on the upper top plate 1 is a movable connecting block 11. The rest is the same as in embodiment 4.

[0079] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. A steel damping and seismic isolation bearing, the bearing comprising an upper top plate (1), a spherical cap (3), an intermediate lining plate (4) and a lower bottom plate (5) arranged in sequence from top to bottom, characterized in that: Sliding friction pairs (2) are provided between the upper top plate (1) and the spherical crown (3), between the spherical crown (3) and the middle lining plate (4), and between the middle lining plate (4) and the lower bottom plate (5); and directional slideways (7) and steel damping components (6) are provided between the upper top plate (1) and the spherical crown (3), and between the middle lining plate (4) and the lower bottom plate (5); The directional slideway (7) between the upper top plate (1) and the ball crown (3) is an upper directional slideway, and the directional slideway (7) between the middle lining plate (4) and the lower bottom plate (5) is a lower directional slideway. The length direction of the upper directional slideway is perpendicular to the length direction of the lower directional slideway. Both ends of the directional slideway (7) are provided with a limit stopper (8), a capacity limiting shear pin (81), a bolt (83) and a pad (84), and a pin hole (82) is provided on the limit stopper (8); The limit stopper (8) is arranged at the bottom of the upper top plate (1) and / or the top of the lower bottom plate (5), and the capacity limiting shear pin (81) passes through the limit stopper (8) and the upper top plate (1) or passes through the limit stopper (8) and the lower bottom plate (5) at the same time, and is fixed by bolts (83) and a gasket (84); The upper top plate (1) and the lower bottom plate (5) are both provided with a limiting groove (12), and a pin (13) connected to the steel damping component (6) is slidably provided in the limiting groove (12). The limiting groove (12) on the upper top plate (1) is parallel to the upper steel damping component, and the limiting groove (12) on the lower bottom plate (5) is parallel to the lower steel damping component. The pin (13) slides freely along the limiting groove (12), and the pin (13) is welded to the steel damping component (6) to prevent the steel damping component (6) from buckling out of the plane during reciprocating motion.

2. A steel damping and seismic isolation bearing according to claim 1, characterized in that: The directional slideway (7) comprises a slide groove (72) and a slide rail (71); In the upper directional slideway, the slide rail (71) is fixedly arranged at the bottom of the upper top plate (1), the slide groove (72) is opened at the top of the ball crown (3), and a sliding friction pair (2) is arranged between the slide groove (72) and the slide rail (71); In the lower directional slideway, the slide rail (71) is fixedly arranged on the top of the lower base plate (5), the slide groove (72) is opened at the bottom of the middle lining plate (4), and a sliding friction pair (2) is provided between the slide groove (72) and the slide rail (71).

3. The steel damping and seismic isolation bearing according to claim 1, characterized in that: The steel damping component (6) between the upper top plate (1) and the spherical crown (3) is an upper steel damping component, and the steel damping component (6) between the middle lining plate (4) and the lower bottom plate (5) is a lower steel damping component; The upper steel damping components are provided in parallel with two of them and are parallel to the length direction of the upper directional slideway; The lower steel damping components are provided with two in parallel and are parallel to the length direction of the lower directional slideway.

4. The steel damping and seismic isolation bearing according to claim 3 is characterized in that: One end of the upper steel damping component is connected to the upper top plate (1), and the other end is connected to the spherical crown (3); one end of the lower steel damping component is connected to the lower bottom plate (5), and the other end is connected to the middle lining plate (4).

5. The steel damping and seismic isolation bearing according to claim 4, characterized in that: The spherical crown (3) and the intermediate lining (4) are both provided with ear plates (9), the upper top plate (1) and the lower bottom plate (5) are both provided with connecting blocks, one end of the steel damping component (6) is connected to the spherical crown (3) or the intermediate lining (4) through the ear plate (9), and the other end is connected to the upper top plate (1) or the lower bottom plate (5) through the connecting block.

6. The steel damping and seismic isolation bearing according to claim 5, characterized in that: The connecting block is a fixed connecting block (11) or a movable connecting block (10), the fixed connecting block (11) is provided with a circular hole adapted to the end of the steel damping component (6), the movable connecting block (10) is provided with a long strip hole adapted to the end of the steel damping component (6), the central axis of the long strip hole along the length direction is collinear with the central axis of the matching steel damping component (6) along the length direction.

7. The steel damping and seismic isolation bearing according to claim 6, characterized in that: The support is a fixed support, a two-way movable support or a one-way movable support; When the support is a fixed support, both ends of the upper directional slideway and the lower directional slideway are provided with limit blocks (8), and the connecting blocks on the upper top plate (1) and the lower bottom plate (5) are fixed connecting blocks (11); When the support is a bidirectional movable support, the connecting blocks on the upper top plate (1) and the lower bottom plate (5) are both movable connecting blocks (10); When the support is a one-way movable support, limit blocks (8) are provided at both ends of the upper directional slide or the lower directional slide; if limit blocks (8) are provided at both ends of the upper directional slide, the connecting block on the upper top plate (1) is a fixed connecting block (11), and the connecting block on the lower bottom plate (5) is a movable connecting block (10); if limit blocks (8) are provided at both ends of the lower directional slide, the connecting block on the lower bottom plate (5) is a fixed connecting block (11), and the connecting block on the upper top plate (1) is a movable connecting block (10).

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