Three-dimensional seismic isolation bearing

Abstract

The embodiment of the application provides a three-dimensional isolation bearing, which comprises a first support and a second support, wherein the first support comprises a base and a sliding seat, the base comprises two first seat plates oppositely arranged along a first direction, the sliding seat is arranged between the two first seat plates and is slidably connected with the two first seat plates respectively, surfaces of the two first seat plates close to the sliding seat are provided with a first groove and a second groove formed by further recessing from a groove bottom of the first groove, the sliding seat comprises a second seat plate and two limiting blocks, the two limiting blocks are connected to two ends of the second seat plate along the first direction, and the two limiting blocks are arranged in the two second grooves respectively; the second support is used for elastic deformation along the first direction and is arranged on a side of at least one first seat plate away from the sliding seat. The three-dimensional isolation bearing provided by the embodiment of the application aims to improve horizontal seismic capacity through multi-stage horizontal prevention, has stronger performance of preventing beam falling and has better reliability.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of bridge seismic isolation, and particularly relates to a three-dimensional seismic isolation support. BACKGROUND

[0002] Earthquake is vibration caused by rapid energy release of the crust. Human society cannot avoid this natural phenomenon so far. Personnel casualties and economic losses caused by earthquakes are mainly caused by building collapse. Therefore, countries around the world are working hard to do well in engineering seismic disaster reduction and working hard to improve the seismic fortification level and seismic capacity of construction projects.

[0003] As a technology that can significantly improve the seismic capacity of buildings, seismic isolation technology is being applied more and more. It uses flexible connection between the upper structure of the building and the foundation, and sets a safe seismic isolation system. Due to the "seismic isolation" and "seismic absorption" of the isolation layer, the upper structure of the building moves approximately horizontally when an earthquake occurs, and the structural response is greatly reduced.

[0004] As a device that can prolong the seismic response period in the horizontal and vertical directions and further improve the stability of the main building when an earthquake occurs, the three-dimensional seismic isolation support has been widely used in the construction of bridges and buildings. However, the current three-dimensional seismic isolation support usually only sets one anti-seismic structure in the horizontal direction, which causes the main building to still easily sway horizontally and have poor anti-overturning capacity when an earthquake occurs, and further easily fall off the beam, resulting in poor reliability of the three-dimensional seismic isolation support of the related technology. SUMMARY

[0005] The technical problem to be solved by the application is to provide a three-dimensional seismic isolation support that has stronger horizontal seismic capacity, good anti-beam-falling performance and better reliability.

[0006] In a first aspect, an embodiment of the application provides a three-dimensional seismic isolation support, which comprises a first support and a second support. The first support comprises a base and a sliding seat. The base comprises two first seat plates oppositely arranged along a first direction. The sliding seat is arranged between the two first seat plates and is in sliding connection with the two first seat plates, respectively. The surfaces of the two first seat plates close to the sliding seat are provided with a first groove and a second groove formed by further recessing from the bottom of the first groove. The sliding seat comprises a second seat plate and two limiting blocks. The two limiting blocks are connected to the two ends of the second seat plate along the first direction and are arranged in the two second grooves, respectively. The second support is arranged on the side of at least one first seat plate away from the sliding seat and is elastically deformed along the first direction.

[0007] According to an embodiment of the first aspect of the present application, the gap between the groove wall of the first groove and the second base plate is greater than the gap between the groove wall of the second groove and the limiting block, and the sliding base is connected to the two first base plates in the second direction, and the second direction intersects the first direction.

[0008] According to an embodiment of the first aspect of the present application, in the first direction, there is a gap between the limiting block and the groove bottom of the second groove.

[0009] According to an embodiment of the first aspect of the present application, the three-dimensional seismic isolation support further comprises two wear-resistant plates, which are respectively arranged between the groove bottom of the two first grooves and the second base plate; the size of the gap in the first direction is greater than or equal to the size of the wear-resistant plate in the first direction.

[0010] According to an embodiment of the first aspect of the present application, the limiting block and the second base plate are connected by a shear pin.

[0011] According to an embodiment of the first aspect of the present application, the center line of the first groove in the first direction, the center line of the second groove in the first direction, and the center line of the first base plate in the first direction coincide.

[0012] According to an embodiment of the first aspect of the present application, the groove bottom surface of the first groove is a spherical surface, and the two end surfaces of the second base plate in the first direction are spherical surfaces and match the groove bottom of the first groove.

[0013] According to an embodiment of the first aspect of the present application, the second support comprises an elastic damping member and a guide rod, the elastic damping member is used for elastic deformation in the first direction, the guide rod is connected to the elastic damping member, and one end of the guide rod protrudes from the elastic damping member; the surface of the first base plate away from the sliding base is provided with a third groove, at least part of the guide rod is arranged in the third groove and gap-fitted with the groove wall of the third groove.

[0014] According to an embodiment of the first aspect of the present application, the elastic damping member comprises an end plate and at least one damping unit, one end of the guide rod is connected to the end plate, and the other end is arranged in the third groove; the damping unit is arranged at the periphery of the guide rod and clamped between the first base plate and the end plate, the damping unit comprises two support plates and an elastic body clamped between the two support plates, and the end surface of the elastic body away from the guide rod is curved and recessed towards the guide rod.

[0015] According to an embodiment of the first aspect of the present application, the guide rod and the groove bottom of the third groove are arranged in a spaced manner.

[0016] The beneficial effect of the present application is that by arranging two first seat plates, the surfaces close to the sliding seat are provided with first grooves, and the second grooves are formed by further recessing from the groove bottoms of the first grooves, during installation, the two limiting blocks of the sliding seat are arranged in the two second grooves respectively, so that when an earthquake occurs, the sliding seat and the two first seat plates slide horizontally, so that the limiting blocks move horizontally in the second grooves, and then abut against the groove walls of the second grooves, the horizontal load generated by the earthquake is transmitted, the reflection time of the earthquake is prolonged for the first time, when the limiting blocks are damaged (fall off) under the action of the earthquake, they can be accommodated in the second grooves, reducing the influence of the limiting blocks on the continuous horizontal sliding of the sliding seat, and at the same time, the groove walls of the first grooves can be used to limit the second seat plate, the horizontal load generated by the earthquake is transmitted again, and the reflection time of the earthquake is prolonged again, so that the multi-stage horizontal earthquake prevention can consume the earthquake energy in multiple times, reduce the damage of the earthquake to the building main body, realize the function of preventing beam falling, and the reliability is better. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0018] Figure 1 is a planar structure schematic diagram of a three-dimensional seismic isolation support provided by the first aspect of the present application;

[0019] Figure 2 is a partial cross-sectional view of a damping unit in the three-dimensional seismic isolation support provided by the first aspect of the present application.

[0020] In the figure, 100, three-dimensional seismic isolation support; 10, first support; 11, base; 111, first seat plate; 1111, first groove; 1112, second groove; 1113, third groove; 12, sliding seat; 121, second seat plate; 122, limiting block; 123, shear pin; 20, second support; 21, elastic damping member; 211, end plate; 212, damping unit; 2121, support plate; 2122, elastic body; 22, guide rod; 30, wear plate; 40, stainless steel plate;

[0021] X, first direction; Y, second direction. DETAILED DESCRIPTION

[0022] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0023] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used in the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion. The terms "first", "second" and the like in the specification and claims of the present application and the above description of drawings are used to distinguish different objects, not to describe a particular order or primary and secondary relationship.

[0024] In the present application, the phrase "embodiments" means that the specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears at various places in the specification does not necessarily all refer to the same embodiments, nor are they necessarily mutually exclusive or alternative embodiments to each other. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in the present application can be combined with other embodiments.

[0025] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection", "attach" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] In the present application, the term "and / or" is only a description of the association relationship between the associated objects, which means that there can be three kinds of relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in the present application generally represents an "or" relationship between the front and rear associated objects.

[0027] "Multiple" appearing in the present application means two or more (including two), and similarly, "multiple groups" means two or more groups (including two groups), and "multiple pieces" means two or more pieces (including two pieces).

[0028] Figure 1 is a planar structural schematic diagram of a three-dimensional seismic isolation support provided by an embodiment of the first aspect of the application; Figure 2 is a partial cross-sectional view of a damping unit in a three-dimensional seismic isolation support provided by an embodiment of the first aspect of the application.

[0029] As shown in Figure 1 and Figure 2 , the embodiment of the application provides a three-dimensional seismic isolation support 100, which comprises a first support 10 and a second support 20, wherein the first support 10 comprises a base 11 and a sliding seat 12, the base 11 comprises two first seat plates 111 oppositely arranged along a first direction X, the sliding seat 12 is arranged between the two first seat plates 111 and is respectively connected with the two first seat plates 111 in sliding mode, the surfaces of the two first seat plates 111 close to the sliding seat 12 are provided with first grooves 1111 and second grooves 1112 formed by further recessing from the groove bottoms of the first grooves 1111, the sliding seat 12 comprises a second seat plate 121 and two limiting blocks 122, the two limiting blocks 122 are connected to the two ends of the second seat plate 121 along the first direction X, and the two limiting blocks 122 are respectively arranged in the two second grooves 1112; the second support 20 is used for elastic deformation along the first direction X and is arranged on the side of at least one first seat plate 111 away from the sliding seat 12.

[0030] The three-dimensional seismic isolation support 100 is applied to the construction industry and is arranged between the foundation and the building body, so as to absorb the energy generated by the earthquake in the horizontal direction and the vertical direction through the change of its own structure when the earthquake comes, and reduce the impact of the earthquake energy on the building body. In these embodiments of the application, the building body can be a bridge, a building, etc., and the application takes the building body as a bridge as an example for description.

[0031] The first support 10 and the second support 20 are two components used for jointly supporting the building body and realizing the seismic isolation effect. In these embodiments of the application, the first support 10 is mainly used for absorbing the impact energy generated by the earthquake in the horizontal direction, and the second support 20 is mainly used for absorbing the impact energy generated by the earthquake in the vertical direction.

[0032] In these embodiments of the application, the first support 10 can be selected as a friction pendulum support, which can consume the impact energy generated by the earthquake in the horizontal direction through its own "pendulum movement" when the earthquake comes.

[0033] The first support 10 comprises a base 11 and a sliding seat 12, wherein the base 11 is a part of the first support 10 for connecting with the building body. The base 11 generally comprises two parts, i.e. the part for connecting with the building body and the part for connecting with the foundation or the ground, and the sliding seat 12 is arranged between the two parts of the base 11, so that when the earthquake comes, the part of the base 11 for connecting with the building body and the part for connecting with the foundation can respectively move horizontally relative to the sliding seat 12 to absorb the horizontal load generated by the earthquake and reduce the influence of the horizontal impact force of the earthquake on the building body.

[0034] Exemplarily, in the embodiments of the present application, the base 11 comprises two first seat plates 111 arranged opposite along the first direction X, i.e. one of the first seat plates 111 is the part for connecting with the building body and the other first seat plate 111 is the part for connecting with the foundation.

[0035] In the embodiments of the present application, the first direction X can be a vertical direction, i.e. a direction perpendicular to the horizontal line.

[0036] The sliding seat 12 is arranged between the two first seat plates 111 and is in sliding connection with the two first seat plates 111 respectively, which means that the sliding seat 12 is clamped between the two first seat plates 111 and the two end faces of the sliding seat 12 along the first direction X abut against the two first seat plates 111 respectively, so as to be able to slide relative to each other when subjected to the horizontal impact force.

[0037] The surfaces of the two first seat plates 111 close to the sliding seat 12 are provided with first recesses 1111, which means that the first recesses 1111 are arranged close to the sliding seat 12 for accommodating and limiting the sliding seat 12; in the embodiments of the present application, the openings of the two first recesses 1111 are arranged opposite to each other to jointly form a space for accommodating the sliding seat 12.

[0038] Correspondingly, the two second recesses 1112 are recessed from the groove bottom of the first recess 1111, so that the openings of the two second recesses 1112 are arranged opposite to each other. The second recess 1112 serves to accommodate part of the structure of the sliding seat 12, and the opening size of the second recess 1112 along the direction perpendicular to the first direction X is smaller than that of the first recess 1111.

[0039] The second seat plate 121 is a component of the sliding seat 12 for sliding friction with the two first seat plates 111.

[0040] The two limiting blocks 122 are connected to the two ends of the second base plate 121 along the first direction X. In a possible implementation, the two limiting blocks 122 are integrally formed with the second base plate 121, so as to strengthen the consistency between the two limiting blocks 122 and the second base plate 121, and further strengthen the structural strength of the limiting blocks 122, thereby improving the ability of the building main body to resist small earthquakes in areas where earthquakes rarely occur or areas where the earthquake level is not high.

[0041] The two limiting blocks 122 are arranged in the two second grooves 1112 respectively. In the stage without earthquake, the two limiting blocks 122 are normally accommodated in the two second grooves 1112. When the earthquake comes, the horizontal load generated by the earthquake acts on the two first base plates 111, so that the two first base plates 111 are displaced in the horizontal direction relative to the second base plate 121. At this time, the two limiting blocks 122 can transmit the horizontal load in the horizontal direction by abutting against the two second grooves 1112, thereby prolonging the reaction period of the earthquake.

[0042] It should be noted that, in the embodiments of the present application, the first groove 1111 can be circular or rectangular in the cross-sectional shape perpendicular to the first direction X, and the first base plate 111 can be circular or rectangular in the cross-sectional shape perpendicular to the first direction X. Correspondingly, the second groove 1112 can be circular or rectangular in the cross-sectional shape perpendicular to the first direction X, and the limiting block 122 can be circular or rectangular in the cross-sectional shape perpendicular to the first direction X.

[0043] For example, in some embodiments, the first groove 1111 can be circular or rectangular in the cross-sectional shape perpendicular to the first direction X, and the first base plate 111 can be circular or rectangular in the cross-sectional shape perpendicular to the first direction X. Correspondingly, the second groove 1112 can be circular or rectangular in the cross-sectional shape perpendicular to the first direction X, and the limiting block 122 can be circular or rectangular in the cross-sectional shape perpendicular to the first direction X.

[0044] In the embodiments of the present application, the second support 20 is used for elastic deformation along the first direction X, that is, the second support 20 is used for transmitting the vertical load generated by the earthquake along the first direction X. In this way, the second support 20 cooperates with the first support 10 to realize the transmission of the horizontal load and the vertical load of the earthquake in all directions, thereby prolonging the reaction time of the earthquake and improving the seismic stability of the building main body, and the reliability is higher.

[0045] The second support 20 is arranged on the side of the at least one first base plate 111 away from the sliding base 12, that is, in the vertical direction, the second support 20 can be arranged at the upper end of the first support 10, or the second support 20 can be arranged at the lower end of the first support 10, or the number of the second support 20 can be two, and the two second supports 20 are arranged at the two ends of the first support 10 along the first direction X respectively.

[0046] According to the three-dimensional seismic isolation support 100 provided in the embodiments of the present application, the surfaces of the two first seat plates 111 close to the sliding seat 12 are provided with first grooves 1111, and second grooves 1112 are formed by further recessing from the groove bottoms of the first grooves 1111. During installation, the two limiting blocks 122 of the sliding seat 12 are arranged in the two second grooves 1112 respectively. When an earthquake occurs, the sliding seat 12 and the two first seat plates 111 slide horizontally, so that the limiting blocks 122 move horizontally in the second grooves 1112 and abut against the groove walls of the second grooves 1112, to transmit the horizontal load generated by the earthquake, thereby prolonging the reaction time of the earthquake for the first time. After the limiting blocks 122 are damaged (fall off) under the action of the earthquake, the damaged limiting blocks 122 can be accommodated in the second grooves 1112, to reduce the influence of the limiting blocks 122 on the continuous horizontal sliding of the sliding seat 12. At the same time, the groove walls of the first grooves 1111 can be used to limit the second seat plate 121, to transmit the horizontal load generated by the earthquake again, thereby prolonging the reaction time of the earthquake again. In this way, the multi-stage horizontal shock absorption can consume the earthquake energy in multiple times, reduce the damage of the earthquake to the building main body, realize the function of preventing the beam from falling, and has better reliability.

[0047] According to one of the embodiments of the first aspect of the present application, the gap between the groove wall of the first groove 1111 and the second seat plate 121 is greater than the gap between the groove wall of the second groove 1112 and the limiting block 122. The sliding seat 12 is connected to the two first seat plates 111 in the second direction Y, and the second direction Y intersects the first direction X.

[0048] The groove wall of the first groove 1111 refers to the side wall of the first groove 1111, that is, the wall parallel to the first direction X. Correspondingly, the groove wall of the second groove 1112 also refers to the side wall of the second groove 1112.

[0049] In the embodiments of the present application, the gap between the groove wall of the first groove 1111 and the second seat plate 121 is greater than the gap between the groove wall of the second groove 1112 and the limiting block 122, to improve the multi-stage horizontal shock absorption performance of the three-dimensional seismic isolation support 100. That is, the second groove 1112 and the limiting block 122 can form a first-stage shock absorption structure, and the first groove 1111 and the second seat plate 121 can form a second-stage shock absorption structure, to have higher reliability.

[0050] The sliding seat 12 is connected to the two first seat plates 111 in the second direction Y, and the second direction Y intersects the first direction X. A possible implementation manner is that the second direction Y is a horizontal direction, that is, the second direction Y is perpendicular to the first direction X. In some embodiments of the present application, in order to meet the shock absorption requirements of special building main bodies, the angle between the second direction Y and the first direction X can also be adjusted.

[0051] According to an embodiment of the first aspect of the present application, there is a gap between the limiting block 122 and the groove bottom of the second groove 1112 along the first direction X.

[0052] The gap between the limiting block 122 and the groove bottom of the second groove 1112 is set to improve the reliability of the movement of the limiting block 122 in the horizontal direction within the second groove 1112. That is, by setting the gap between the limiting block 122 and the groove bottom of the second groove 1112, it can be ensured that there is always a gap between the limiting block 122 and the groove bottom of the second groove 1112 when the components in the three-dimensional seismic isolation support 100 expand or shrink due to temperature, thereby reducing the risk of affecting the sliding efficiency between the sliding seat 12 and the base 11 due to the contact between the limiting block 122 and the groove bottom of the second groove 1112.

[0053] Meanwhile, during the use of the three-dimensional seismic isolation support 100, the friction between the second seat plate 121 and the two first seat plates 111 will inevitably cause the size of the first seat plate 111 or the second seat plate 121 in the first direction X to change, causing the limiting block 122 to be closer to the groove bottom of the second groove 1112. In these embodiments of the present application, the gap between the limiting block 122 and the groove bottom of the second groove 1112 is set to adapt to this characteristic of the three-dimensional seismic isolation support 100, thereby further improving the reliability of the three-dimensional seismic isolation support 100.

[0054] According to an embodiment of the first aspect of the present application, the three-dimensional seismic isolation support 100 further comprises two wear-resistant plates 30, which are respectively arranged between the groove bottom of the two first grooves 1111 and the second seat plate 121; the size of the gap along the first direction X is greater than or equal to the size of the wear-resistant plate 30 along the first direction X.

[0055] The wear-resistant plate 30 is arranged between the groove bottom of the first groove 1111 and the second seat plate 121 to improve the friction performance between them and reduce the amount of material wear. For example, in some embodiments, the material of the wear-resistant plate 30 can be, but is not limited to, polytetrafluoroethylene, modified polytetrafluoroethylene, or ultra-high molecular weight polyethylene.

[0056] In these embodiments of the present application, the size of the gap along the first direction X is greater than or equal to the size of the wear-resistant plate 30 along the first direction X, i.e., the size of the gap between the limiting block 122 and the groove bottom of the second groove 1112 along the first direction X is greater than or equal to the size of the wear-resistant plate 30 along the first direction X. In this way, even in the extreme working state of the wear-resistant plate 30 (worn out), there is still a gap between the limiting block 122 and the groove bottom of the second groove 1112, further improving the reliability of the three-dimensional seismic isolation support 100.

[0057] In some embodiments of the present application, a stainless steel plate 40 can also be arranged between the wear plate 30 and the groove bottom of the first groove 1111 to form a double pendulum type friction pendulum structure with the first seat plate 111. At this time, one wear plate 30 and one stainless steel plate 40 can form a sliding surface friction pair of the first support 10, and another wear plate 30 and another stainless steel plate 40 can form a rotating friction pair or a sliding friction pair, and the reliability is better.

[0058] It should be noted that in these embodiments of the present application, one end surface of the stainless steel plate 40 along the first direction X needs to match the groove bottom surface of the first groove 1111, and the other end surface along the first direction X needs to match the wear plate 30. The meaning of matching is that the curvature and size are adapted to each other, so as not to affect each other, and to form a rotating friction pair and / or a sliding friction pair.

[0059] According to an embodiment of the first aspect of the present application, the limiting block 122 and the second seat plate 121 are connected through the shear pin 123.

[0060] In these embodiments of the present application, the limiting block 122 and the second seat plate 121 are connected through the shear pin 123, which can further weaken the connection stiffness between the limiting block 122 and the second seat plate 121. When the three-dimensional seismic isolation support 100 encounters a strong earthquake, after the limiting block 122 abuts against the groove wall of the second groove 1112, the shear pin 123 can be sheared and fractured under the action of the horizontal load, so that the limiting block 122 is separated from the second seat plate 121, and then the limiting of the limiting block 122 to the sliding seat 12 in the horizontal direction is cancelled. At this time, the sliding seat 12 can realize the limiting in the horizontal direction through the abutment between the second seat plate 121 and the groove wall of the first groove 1111.

[0061] In these embodiments of the present application, the number of shear pins 123 can be multiple. In this way, when an earthquake occurs, the horizontal load generated by the earthquake can be first transmitted through the cooperation between the limiting block 122 and the second groove 1112 to prolong the response period of the earthquake and realize the first-stage seismic isolation. Further, when the limiting block 122 is in a state of abutting against the groove wall of the second groove 1112 for a long time, the shear pins 123 used to connect the limiting block 122 and the second seat plate 121 are in a shearing state. At this time, the horizontal load can be further transmitted through the shear pins 123 to dissipate the energy of the earthquake in the horizontal direction, so as to realize the second-stage seismic isolation. Further, when the shear pins 123 are sheared and fractured under the horizontal load generated by the earthquake, the sheared shear pins 123 and the limiting block 122 are accommodated in the second groove 1112. At this time, the second seat plate 121 abuts against the groove bottom of the first groove 1111 to further transmit the horizontal load and dissipate the energy of the earthquake again.

[0062] According to the three-dimensional seismic isolation support 100 provided in the embodiments of the present application, through the design of the first groove 1111, the second groove 1112, the limiting block 122 and the shear pin 123, multiple levels of horizontal shock absorption are provided for the three-dimensional seismic isolation support 100, which can greatly meet the requirements of preventing beam falling, so as to realize the beam falling prevention performance of the building main body by using the three-dimensional seismic isolation support 100, and the reliability is better.

[0063] According to one of the embodiments of the first aspect of the present application, the middle line of the first groove 1111 along the first direction X, the middle line of the second groove 1112 along the first direction X and the middle line of the first seat plate 111 along the first direction X coincide.

[0064] In the embodiments of the present application, the first groove 1111 and the second groove 1112 are arranged in the middle part of the first seat plate 111, so that the three-dimensional seismic isolation support 100 has good shock absorption and isolation effect when coping with horizontal loads in different directions.

[0065] According to one of the embodiments of the first aspect of the present application, the bottom surface of the first groove 1111 is a spherical surface, and the two end surfaces of the second seat plate 121 along the first direction X are spherical surfaces and match the bottom of the first groove 1111.

[0066] In the embodiments of the present application, the bottom surface of the first groove 1111 and the two end surfaces of the second seat plate 121 along the first direction X are arranged as spherical surfaces, which are adapted to the swing condition of the building main body during the earthquake, and can form a "pendulum" swing during the earthquake.

[0067] The two end surfaces of the second seat plate 121 along the first direction X match the bottom of the first groove 1111, which means that the shapes of the two spherical surfaces match.

[0068] According to one of the embodiments of the first aspect of the present application, the second support 20 includes an elastic shock absorbing member 21 and a guide rod 22, the elastic shock absorbing member 21 is used for elastic deformation along the first direction X, the guide rod 22 is connected to the elastic shock absorbing member 21, and one end of the guide rod 22 protrudes from the elastic shock absorbing member 21; the surface of the first seat plate 111 away from the sliding seat 12 is provided with a third groove 1113, at least part of the guide rod 22 is arranged in the third groove 1113 and gap-fitted with the groove wall of the third groove 1113.

[0069] The elastic shock absorbing member 21 is a component in the second support 20 that plays a shock absorbing effect, and the guide rod 22 plays a role in guiding the elastic shock absorbing member 21 and limiting the deformation direction of the elastic shock absorbing member 21, so that the elastic shock absorbing member 21 is used for elastic deformation along the first direction X.

[0070] The guide rod 22 is connected to the elastic damping member 21, and possible implementation manners are that the guide rod 22 is detachably connected to the elastic damping member 21 to facilitate subsequent maintenance and replacement; in some embodiments, the guide rod 22 can also be fixedly connected to the elastic damping member 21 to increase the connection strength of the guide rod 22 and the elastic damping member 21 and reduce the probability of structural damage of the guide rod 22 and the elastic damping member 21 due to earthquakes.

[0071] The end of the guide rod 22 protrudes from the elastic damping member 21, which means that the guide rod 22 is arranged along the first direction X and one end thereof protrudes from the elastic damping member 21 along the first direction X.

[0072] At least part of the guide rod 22 is arranged in the third groove 1113 and gap-fitted with the groove wall of the third groove 1113, which means that the part of the guide rod 22 protruding from the elastic damping member 21 is fitted with the groove wall of the third groove 1113 so that the guide rod 22 can move in the third groove 1113 along the first direction X.

[0073] In the embodiments of the present application, the elastic damping member 21 is used to absorb the vertical seismic load of the three-dimensional seismic isolation support 100 under the guidance of the guide rod 22, and the first support 10 is used to absorb the horizontal seismic load of the three-dimensional seismic isolation support 100 to realize full-directional seismic isolation.

[0074] According to one embodiment of the first aspect of the present application, the elastic damping member 21 comprises an end plate 211 and at least one damping unit 212, one end of the guide rod 22 is connected to the end plate 211, and the other end is arranged in the third groove 1113; the damping unit 212 is arranged at the periphery of the guide rod 22 and clamped between the first seat plate 111 and the end plate 211, the damping unit 212 comprises two support plates 2121 and an elastic body 2122 clamped between the two support plates 2121, and the end surface of the elastic body 2122 away from the guide rod 22 is curved and recessed towards the guide rod 22.

[0075] The damping unit 212 is the smallest unit for damping in the second support 20.

[0076] The damping unit 212 is arranged at the periphery of the guide rod 22, which means that the damping unit 212 is arranged around the guide rod 22 in a plane perpendicular to the first direction X. Exemplarily, in the embodiment in which the guide rod 22 is circular in cross section perpendicular to the first direction X, the damping unit 212 can be arranged along the circumference of the guide rod 22.

[0077] The at least one damping unit 212 is clamped between the first seat plate 111 and the end plate 211 to absorb the vertical load generated by the earthquake through its own deformation, further improving the stability of the building main body.

[0078] In the embodiments of the present application, the damping unit 212 comprises two support plates 2121 and an elastic body 2122 clamped between the two support plates 2121, wherein the material of the elastic body 2122 can be selected as polyurethane, so as to bear greater vertical surface pressure and have higher reliability.

[0079] In the embodiments of the present application, the end surface of the elastic body 2122 away from the guide rod 22 can be curved and recessed towards the direction close to the guide rod 22, so as to leave a space for the deformation of the elastic body 2122 between the two support plates 2121, so that the elastic body 2122 can maintain a good shape when being extruded and deformed between the two support plates 2121 when the second support 20 bears vertical load, thereby reducing the possibility of creep and damage of the elastic body 2122.

[0080] According to an embodiment of the first aspect of the present application, the guide rod 22 is spaced apart from the bottom of the third groove 1113.

[0081] In the embodiments of the present application, the guide rod 22 is spaced apart from the bottom of the third groove 1113, so that the guide rod 22 can move in the first direction X in the third groove 1113, thereby further improving the vertical load bearing capacity of the three-dimensional seismic isolation support 100 and having higher reliability.

[0082] It should be understood by those skilled in the art that the above discussion of any embodiment is only exemplary and is not intended to imply that the scope of protection of the present application is limited to these examples; under the idea of the present application, the above embodiments or technical features in different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of one or more embodiments of the present application as described above. In order to be brief, they are not provided in details.

[0083] One or more embodiments of the present application are intended to cover all such alternatives, modifications and variations falling within the broad scope of the present application. Therefore, any omission, modification, equivalent replacement, improvement, etc. made within the spirit and principles of one or more embodiments of the present application shall be included in the scope of protection of the present application.

Claims

1. A three-dimensional seismic isolation bearing (100) characterized by, The utility model relates to a three-dimensional shock insulation support (100) comprising: a first support (10) comprising a base (11) and a sliding base (12), the base (11) comprising two first base plates (111) oppositely arranged along a first direction (X), the sliding base (12) being arranged between the two first base plates (111) and being slidably connected with the two first base plates (111) respectively, the surfaces of the two first base plates (111) close to the sliding base (12) being provided with first grooves (1111) and second grooves (1112) formed by further recessing from the groove bottoms of the first grooves (1111), the sliding base (12) comprising a second base plate (121) and two limiting blocks (122), the two limiting blocks (122) being connected to the two ends of the second base plate (121) along the first direction (X) and being arranged in the two second grooves (1112) respectively; a second support (20) for elastically deforming along the first direction (X) and being arranged on the side of at least one first base plate (111) away from the sliding base (12); the gap between the groove wall of the first groove (1111) and the second base plate (121) being greater than the gap between the groove wall of the second groove (1112) and the limiting block (122), the sliding base (12) being slidably connected with the two first base plates (111) along a second direction (Y) intersecting the first direction (X) respectively; along the first direction (X), there is a gap between the limiting block (122) and the groove bottom of the second groove (1112).

2. The three-dimensional seismic isolator (100) according to claim 1, characterized in that The three-dimensional shock insulation support (100) further comprises two wear-resistant plates, the two wear-resistant plates being arranged between the groove bottoms of the two first grooves (1111) and the second base plate (121) respectively; the size of the gap between the limiting block (122) and the groove bottom of the second groove (1112) along the first direction (X) being greater than or equal to the size of the wear-resistant plate along the first direction (X).

3. The three-dimensional seismic isolator (100) of claim 1, characterized in that, The limiting block (122) and the second base plate (121) are connected by a shear pin (123).

4. The three-dimensional seismic isolator (100) of claim 1, wherein, The middle line of the first groove (1111) along the first direction (X), the middle line of the second groove (1112) along the first direction (X) and the middle line of the first base plate (111) along the first direction (X) coincide.

5. The three-dimensional seismic isolator (100) of claim 1, wherein, The groove bottom surface of the first groove (1111) is a spherical surface, the two end surfaces of the second base plate (121) along the first direction (X) are spherical surfaces and match the groove bottom of the first groove (1111).

6. The three-dimensional seismic isolator (100) of claim 1, wherein, The second support (20) comprises an elastic damping member (21) for elastically deforming along the first direction (X) and a guide rod (22) connected to the elastic damping member (21), one end of the guide rod (22) protruding from the elastic damping member (21). The surface of the first seat plate (111) facing away from the sliding seat (12) is provided with a third groove (1113), and the guide rod (22) is at least partially arranged in the third groove (1113) and gap-fitted with the groove wall of the third groove (1113).

7. The three-dimensional seismic isolating bearing (100) according to claim 6, characterized in that, The elastic damping member (21) comprises an end plate (211) and at least one damping unit (212), one end of the guide rod (22) is connected to the end plate (211), and the other end is arranged in the third groove (1113). The damping unit (212) is arranged at the periphery of the guide rod (22) and clamped between the first seat plate (111) and the end plate (211), the damping unit (212) comprises two support plates (2121) and an elastic body (2122) clamped between the two support plates (2121), and the elastic body (2122) is curved and recessed away from the end surface of the guide rod (22) and towards the direction close to the guide rod (22).

8. The three-dimensional seismic isolating bearing (100) according to claim 6, characterized in that, The guide rod (22) is arranged in a spaced manner with the groove bottom of the third groove (1113).

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