Shock absorption and isolation support with yield reserve stiffness

Abstract

The invention relates to the technical field of constructional engineering, and provides a seismic mitigation and isolation support with yield reserve stiffness, which is provided with an upper sealing plate and a lower sealing plate which are respectively connected with a building structure and a foundation, and comprises one seismic isolation support and a plurality of damping parts which are arranged on the periphery of the seismic isolation support, and the two ends of each damping part are respectively arranged on the upper sealing plate and the lower sealing plate. The damping piece comprises two universal joints which are respectively arranged on the upper sealing plate and the lower sealing plate; the sleeve is hinged to one universal joint, and a sliding space is formed in the sleeve; one end of the pull rod is located in the sliding space, and the other end of the pull rod penetrates through the sleeve to be hinged to the other universal joint; the self-locking device is composed of a stop block and a spring piece and connected with a lower bottom plate of the metal damper, and the self-locking device is used for limiting sliding of the pull rod. By means of the technical scheme, the problems that under the earthquake action, after the seismic mitigation and isolation support is yielded, deformation is large, weak parts are prone to damage, and the energy dissipation capacity is single are solved.

Description

Technical Field

[0001] The invention relates to the technical field of building engineering, and in particular to a seismic isolation bearing with yield reserve stiffness. Background Art

[0002] Structural seismic isolation refers to a structural system formed by installing a certain seismic isolation device between the bottom of the structure and the foundation surface (or the top of the bottom column), which usually includes three parts: the upper structure, the seismic isolation device and the lower structure. The seismic isolation layer can absorb most of the seismic energy, block the transmission of seismic power to the upper structure, significantly extend the natural seismic period of the building, significantly reduce the seismic response, achieve the predetermined seismic resistance and shock reduction goals, and more effectively ensure the safety of the structure. In view of the above advantages of seismic isolation technology, seismic isolation technology has been applied in many building structures, such as bridge bearings, rail transit seismic isolation, high-rise building foundation isolation, etc.

[0003] In terms of energy dissipation and shock absorption. Structural energy dissipation and shock absorption technology is to install energy dissipation devices in certain parts of the structure, and generate greater damping through friction, bending, and elastic-plastic hysteresis deformation of the energy dissipation devices to dissipate or absorb the energy input into the structure by earthquakes, so as to reduce the earthquake response of the main structure, thereby avoiding damage or collapse of the structure and achieving the purpose of shock absorption control. However, the relatively weak links of the existing seismic isolation bearings are more easily damaged under the action of earthquakes, and the energy dissipation capacity is relatively single. Summary of the invention

[0004] The present invention provides a seismic isolation bearing with yield reserve stiffness, which solves the problem in the related art that weak links of the seismic isolation bearing are easily damaged during earthquake action and the energy dissipation capacity is relatively single.

[0005] The technical solution of the present invention is as follows: A seismic isolation bearing with yield reserve stiffness, used for connecting a building structure and a foundation, comprising: An upper sealing plate and a lower sealing plate, wherein the upper sealing plate and the lower sealing plate are connected to the building structure and the foundation respectively; The damping member is provided in plurality and arranged on the periphery of the seismic isolation support. The two ends of the damping member are respectively arranged on the upper sealing plate and the lower sealing plate. The damping member comprises: Universal joint, each of the damping members has two, which are respectively arranged on the upper sealing plate and the lower sealing plate; A sleeve, hinged on one of the universal joints, wherein the sleeve has a sliding space; A pull rod, having one end located in the sliding space and the other end passing through the sleeve and hinged to another universal joint; A friction gasket is arranged in the sleeve; the friction gasket abuts against the inner wall of the pull rod; A self-locking device is arranged on the pull rod, and the self-locking device is used to limit the sliding of the pull rod.

[0006] Optionally, also include: There are a plurality of inner reinforcing plates and outer reinforcing plates, wherein the outer reinforcing plates and the inner reinforcing plates have the same length along the length direction of the tie rod and are arranged on the sleeve, the inner reinforcing plates are located in the sliding space, the friction pad is arranged on a side of the inner reinforcing plate close to the tie rod, the width of the friction pad is equal to the width of the tie rod, and the width of the outer reinforcing plates and the inner reinforcing plates is 1.2 times the width of the tie rod; The fastening bolts are arranged on the inner reinforcing plate and the outer reinforcing plate, and the fastening bolts are used to connect the inner reinforcing plate, the outer reinforcing plate and the sleeve.

[0007] Optionally, the pull rod has a slide groove, and further comprises: There are several energy absorbing parts, which are arranged on the sleeve, and when the pull rod slides, the energy absorbing parts slide along the slide groove; The lower bottom plate has a plurality of parts and is arranged on the energy consuming parts; A connecting piece, arranged on the lower bottom plate; A limit block, arranged on the connecting piece; The stop block is arranged in the slide groove, and the limit blocks are provided on both sides of the stop block. The side of the limit block away from the stop block has an inclined surface. After the pull rod slides, the energy absorbing part abuts against the inclined surface, and the energy absorbing part is used to absorb the kinetic energy of the sliding of the stop block.

[0008] Optionally, the connecting piece has a long hole groove, and the limiting block is slidably arranged in the long hole groove.

[0009] Optionally, the energy dissipation component is a metal yield plate, further comprising: An upper top plate is arranged on the sleeve, and the energy absorbing component is connected to the sleeve through the upper top plate.

[0010] Optionally, a plurality of the sleeves form a polygon, further comprising: A rubber bearing is arranged between the upper sealing plate and the lower sealing plate, and the rubber bearing bears the vertical load.

[0011] Optionally, the friction pad is one of a metal-based friction material, an infinite non-metal-based friction material, an organic non-metal-based friction material, and a composite friction material.

[0012] Optionally, the energy absorbing component has a width at the upper and lower ends greater than a width in the middle portion, and is composed of a plurality of metal yield plates.

[0013] Optionally, also include: There are two end plates, which are detachably arranged at the two ends of the sleeve, and the pull rod passes through one of the end plates.

[0014] The working principle and beneficial effects of the present invention are: In the present invention, the upper sealing plate and the lower sealing plate are connected to the building structure and the foundation. The one connected to the foundation is called the lower sealing plate, and the one connected to the building structure is called the upper sealing plate. The materials and shapes of the two are the same, but the connection positions are different. The upper sealing plate and the lower sealing plate have a large plane, which is not only convenient for them to be connected to the building structure and the foundation, but also the large area of ​​themselves can prevent them from tipping over or falling when subjected to lateral force, thereby improving the safety performance of the support. The universal joint is used to connect the sleeve, and the sleeve itself is also hinged with the universal joint. The use of multiple universal joints can ensure that even if the sleeve is fixed on the upper sealing plate, it can still rotate relatively freely in all directions, so that the support can withstand forces from multiple directions. The pull rod slides relative to the sleeve, and the friction gasket is arranged inside the sleeve to apply resistance to the sliding of the pull rod and limit the sliding of the pull rod. If the pull rod wants to slide, it needs to consume enough energy to overcome the resistance before it can slide. When an earthquake disaster occurs, most of the energy generated by the earthquake will be absorbed by the friction gasket and will not be transmitted to the building, thereby ensuring the safety and stability of the building. At the same time, self-locking devices are set on both sides of the rod movement. When the vibration is too large and the rod moves, the self-locking device will enter the working state. At this time, the impact force of the vibration will be completely absorbed by the metal damper and the friction damper. Through two different ways of absorbing impact, the seismic isolation bearing can adapt to different scenarios, thereby improving the applicability of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 is a cross-sectional view of the damping member in the present invention; Figure 3 For the present invention Figure 2 A partial enlarged view of the middle part; Figure 4 is a cross-sectional view of the damping member of the present invention from another perspective; Figure 5 It is a schematic diagram of the structure of the pull rod and related parts in the present invention; Figure 6 It is a structural schematic diagram of the self-locking device in the present invention.

[0017] In the figure: 1, upper sealing plate, 2, lower sealing plate, 3, damping member, 4, universal joint, 5, sleeve, 6, sliding space, 7, pull rod, 8, friction gasket, 9, self-locking device, 10, inner reinforcement plate, 11, outer reinforcement plate, 12, fastening bolts, 13, slide groove, 14, energy dissipation part, 15, lower bottom plate, 16, connecting plate, 17, limit block, 18, stop block, 19, inclined surface, 20, long hole groove, 21, upper top plate, 22, rubber bearing, 23, end plate. DETAILED DESCRIPTION

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, they can also be understood as further technical solutions without creative work. In some figures, components with the same structure or function are only schematically illustrated, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0019] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0021] Reference Figure 1 to Figure 6 , which is the first embodiment of the present invention, proposes a seismic isolation bearing with yield reserve stiffness, which is used to connect a building structure and a foundation, including: an upper cover plate 1 and a lower cover plate 2 respectively connecting the building structure and the foundation; there are a plurality of damping members 3, which are circumferentially spaced between the upper cover plate 1 and the lower cover plate 2, and the two ends of the damping member 3 are respectively arranged on the upper cover plate 1 and the lower cover plate 2, and the damping member 3 includes: there are two universal joints 4, which are respectively arranged on the upper cover plate 1 and the lower cover plate 2; a sleeve 5 is hinged on a universal joint 4, and a sliding space 6 is provided in the sleeve 5; there are a plurality of pull rods 7, which are slidably arranged in the sliding space 6, and one end of the pull rod 7 passes through the sleeve 5 and is hinged to another universal joint 4; a self-locking device 9 is arranged on the pull rod 7 and the sleeve 5, and the self-locking device 9 is used to limit the sliding of the pull rod 7.

[0022] In the present invention, the upper sealing plate 1 and the lower sealing plate 2 are connected to the building structure and the foundation. The one connected to the foundation is called the lower sealing plate 2, and the one connected to the building structure is called the upper sealing plate 1. The materials and shapes of the two are the same, but the connection positions are different. The upper sealing plate 1 and the lower sealing plate 2 have a large plane, which is not only convenient for them to be connected to the building structure and the foundation, but also their large area can prevent them from tipping over or falling when subjected to lateral force, thereby improving the safety performance of the support. The universal joint 4 is used to connect the sleeve 5, and the sleeve 5 itself is also hinged to the universal joint 4. The use of multiple universal joints 4 can ensure that the sleeve 5 can rotate relatively freely in all directions even if it is fixed on the upper sealing plate 1, so that the support can withstand forces from multiple directions. The pull rod 7 slides relative to the sleeve 5, and the friction gasket 8 is arranged inside the sleeve 5, which applies resistance to the sliding of the pull rod 7 and limits the sliding of the pull rod 7. If the pull rod 7 wants to slide, it needs to consume enough energy to overcome the resistance before it can slide. When an earthquake disaster occurs, most of the energy generated by the earthquake will be absorbed by the friction pad 8 and will not be transmitted to the building, ensuring the safety and stability of the building. At the same time, self-locking devices 9 are set on both sides of the moving pull rod 7. When the vibration is too large and the pull rod 7 moves, the self-locking device 9 will enter the working state. At this time, the impact force of the vibration will be completely absorbed by the metal damper and the friction damper. Through two different ways of absorbing impact, the seismic isolation bearing can adapt to different scenarios, thereby improving the scope of application of the bearing.

[0023] Further, it also includes: an inner reinforcing plate 10 and an outer reinforcing plate 11, which are provided in plurality, wherein the outer reinforcing plate 11 and the inner reinforcing plate 10 are equal in length along the length direction of the tie rod 7, and are arranged on the sleeve 5, the inner reinforcing plate 10 is located in the sliding space 6, the friction pad 8 is arranged on a side of the inner reinforcing plate 10 close to the tie rod 7, the width of the friction pad 8 is equal to the width of the tie rod 7, and the width of the outer reinforcing plate 11 and the inner reinforcing plate 10 is 1.2 times the width of the tie rod 7; In this embodiment, the inner reinforcing plate 10 and the outer reinforcing plate 11 are used to connect the friction pad 8 and are fixed by the fastening bolts 12. The design of the inner reinforcing plate 10 and the outer reinforcing plate 11 can make the connection between the friction pad 8 and the sleeve 5 more stable. Even if the vibration caused by the earthquake is very large, the friction pad 8 will not be separated from the sleeve 5. At the same time, the bearing strength of the side wall of the sleeve 5 is also reinforced in disguise, and the stability of the device operation is improved. By adjusting the fastening bolts 12, the resistance of the friction pad 8 to the pull rod 7 can also be adjusted, so that accurate adjustment can be made for the resistance of different buildings.

[0024] Furthermore, the pull rod 7 is provided with a slide groove 13, and also includes: a plurality of energy-absorbing parts 14, which are arranged on the sleeve 5, and the energy-absorbing parts 14 are located in the sliding space 6. When the pull rod 7 slides, the energy-absorbing parts 14 slide along the slide groove 13; a plurality of lower base plates 15, which are arranged on the energy-absorbing parts 14; a connecting piece 16 is arranged on the lower base plate 15; a limit block 17 is arranged on the connecting piece 16; a stop block 18 is arranged in the slide groove 13, and there are limit blocks 17 on both sides of the stop block 18. The side of the limit block 17 close to the slide groove 13 has a slope 19. After the pull rod 7 slides, the energy-absorbing part 14 abuts against the slope 19 and compresses the energy-absorbing part 14.

[0025] In this embodiment, when the energy generated by the earthquake is large enough, the pull rod 7 will overcome the friction force of the damping member 3 and then slide relative to the sleeve 5. At this time, the stop block 18 will slide synchronously driven by the sleeve 5. After sliding a certain distance, the stop block 18 will abut against the limit member. Since the force generated by the earthquake is large enough, the limit block 17 will also be driven to slide. The limit block 17 will eventually be driven to the position of the lower base plate 15 and contact the energy absorbing member 14. When the limit block 17 contacts the energy absorbing member 14, the metal damper will absorb a large amount of energy to prevent the limit block 17 from continuing to slide, which has a shock-absorbing effect and prevents the vibration from being transmitted to the building when the impact is too large. There are multiple metal dampers, and no matter which direction the vibration is received, the corresponding energy absorbing member 14 can absorb the energy, thereby improving the safety performance of the device.

[0026] Furthermore, the connecting piece 16 has a long hole groove 20 , and the limiting block 17 is slidably arranged in the long hole groove 20 .

[0027] In this embodiment, the connecting piece 16 has a long hole groove 20, and after the limit block 17 is contacted by the stop block 18, it will slide along the long hole groove 20, which can ensure that the sliding direction of the limit block 17 will not deviate, and ensure that the limit block 17 can be stably brought to the energy consuming part 14, thereby ensuring the stability of the device during application.

[0028] Furthermore, the energy absorbing member 14 is a metal yield plate, and further includes: an upper top plate 21 disposed on the sleeve 5, and the energy absorbing member 14 is connected to the sleeve 5 via the upper top plate 21; a lower bottom plate 15 disposed on a side of the energy absorbing member 14 away from the upper top plate 21, and the lower bottom plate 15 abuts against the bottom of the slide groove 13.

[0029] In this embodiment, the design of the upper top plate 21 and the lower bottom plate 15 enhances the stability between the energy-absorbing component 14 and the sleeve 5, and ensures the contact area between the upper top plate 21 and the lower bottom plate 15. Even if the impact force is too large, it will be shared by the excessively large contact area, ensuring that the sleeve 5 will not be damaged.

[0030] Furthermore, a plurality of sleeves 5 form a polygon, and further include: a rubber support 22 disposed between the upper sealing plate 1 and the lower sealing plate 2, and the rubber support 22 bears weight.

[0031] In this embodiment, the rubber bearing 22 is arranged between the upper sealing plate 1 and the lower sealing plate 2. The rubber bearing 22 is made of hard rubber and can provide great supporting force. The design of the rubber bearing 22 greatly improves the bearing capacity of the seismic isolation bearing, ensures that the bearing can bear the weight of the building, and improves the safety of the bearing.

[0032] Furthermore, the friction pad 8 is one of a composite friction material, a metal friction material, and a polymer friction material.

[0033] In this embodiment, the friction gasket 8 can be made of a variety of different materials, all of which can provide sufficiently large friction resistance. At the same time, these materials are also relatively wear-resistant, thereby increasing the service life of the friction gasket 8.

[0034] Furthermore, the width of the upper and lower ends of the energy dissipation member 14 is greater than the width of the middle portion, and the energy dissipation member 14 is composed of a plurality of metal yield plates.

[0035] In this embodiment, the upper top plate 21 and the lower bottom plate 15 are both connected to the energy absorbing member 14, and the widths are both wider than the middle part of the energy absorbing member 14. The larger width ensures the contact area between the upper top plate 21 and the lower top plate and the energy absorbing member 14, and increases the connection strength therebetween. At the same time, the sliding plate and the upper top plate 21 are fixed to the sleeve 5 by bolts. The lower width in the middle can ensure that the bolts are more easily disassembled and assembled, thereby increasing the speed of installation. At the same time, the setting of multiple energy absorbing members 14 can ensure that after the limit block 17 contacts the energy absorbing member 14, the energy that the energy absorbing member 14 can absorb is increased, further increasing the protection range of the support. Furthermore, it also includes: there are two end plates 23 which are detachably arranged at the two ends of the sleeve 5 , and the pull rod 7 passes through the end plates 23 .

[0036] In this embodiment, the detachable end plate 23 simplifies the disassembly and assembly process, making it more convenient to inspect and replace internal parts after being vibrated, thereby reducing the difficulty of the work and shortening the work time.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A seismic isolation bearing with yield reserve stiffness, used for connecting a building structure and a foundation, characterized in that: include: An upper sealing plate (1) and a lower sealing plate (2), wherein the upper sealing plate (1) and the lower sealing plate (2) are connected to the building structure and the foundation respectively; A plurality of damping members (3) are arranged on the periphery of the seismic isolation support, and two ends of the damping member (3) are respectively arranged on the upper sealing plate (1) and the lower sealing plate (2). The damping member (3) comprises: A universal joint (4), each of the damping members (3) having two, which are respectively arranged on the upper sealing plate (1) and the lower sealing plate (2); A sleeve (5) is hinged on one of the universal joints (4), and a sliding space (6) is provided in the sleeve (5); A pull rod (7), having one end located in the sliding space (6) and the other end passing through the sleeve (5) and being hinged to another universal joint (4); A friction gasket (8) is arranged in the sleeve (5); the friction gasket (8) abuts against the inner wall of the pull rod (7); A self-locking device (9) is arranged on the pull rod (7), and the self-locking device (9) is used to limit the sliding of the pull rod (7).

2. The seismic isolation bearing with yield reserve stiffness according to claim 1, characterized in that: Also includes: There are a plurality of inner reinforcing plates (10) and outer reinforcing plates (11), wherein the outer reinforcing plates (11) and the inner reinforcing plates (10) are of equal length along the length direction of the tie rod (7) and are arranged on the sleeve (5), the inner reinforcing plates (10) are located in the sliding space (6), the friction pad (8) is arranged on a side of the inner reinforcing plate (10) close to the tie rod (7), the width of the friction pad (8) is equal to the width of the tie rod (7), and the width of the outer reinforcing plates (11) and the inner reinforcing plates (10) is 1.2 times the width of the tie rod (7); A fastening bolt (12) is arranged on the inner reinforcing plate (10) and the outer reinforcing plate (11), and the fastening bolt (12) is used to connect the inner reinforcing plate (10), the outer reinforcing plate (11) and the sleeve (5).

3. The seismic isolation bearing with yield reserve stiffness according to claim 1, characterized in that: The pull rod (7) is provided with a slide groove (13), and further comprises: A plurality of energy absorbing parts (14) are arranged on the sleeve (5), and when the pull rod (7) slides, the energy absorbing parts (14) slide along the slide groove (13); The lower bottom plates (15) are provided in plurality and are arranged on the energy consuming parts (14); A connecting piece (16) is arranged on the lower base plate (15); A limit block (17) arranged on the connecting piece (16); A stop block (18) is arranged in the slide groove (13), and the stop block (18) has the limit blocks (17) on both sides. The limit block (17) has an inclined surface (19) on the side facing away from the stop block (18). After the pull rod (7) slides, the energy absorbing component (14) abuts against the inclined surface (19), and the energy absorbing component (14) is used to absorb the kinetic energy of the sliding of the stop block (18).

4. The seismic isolation bearing with yield reserve stiffness according to claim 3, characterized in that: The connecting piece (16) is provided with a long hole groove (20), and the limiting block (17) is slidably arranged in the long hole groove (20).

5. The seismic isolation bearing with yield reserve stiffness according to claim 3, characterized in that: The energy dissipation component (14) is a metal yield plate, and further comprises: An upper top plate (21) is arranged on the sleeve (5), and the energy dissipation component (14) is connected to the sleeve (5) via the upper top plate (21).

6. The seismic isolation bearing with yield reserve stiffness according to claim 1, characterized in that: A plurality of the sleeves (5) form a polygon, and further include: A rubber support (22) is arranged between the upper sealing plate (1) and the lower sealing plate (2), and the rubber support (22) bears a vertical load.

7. The seismic isolation bearing with yield reserve stiffness according to claim 1, characterized in that: The friction pad (8) is one of a metal-based friction material, an infinite non-metal-based friction material, an organic non-metal-based friction material, and a composite friction material.

8. The seismic isolation bearing with yield reserve stiffness according to claim 5, characterized in that: The energy dissipation component (14) has a width at the upper and lower ends that is greater than a width in the middle portion, and is composed of a plurality of metal yield plates.

9. The seismic isolation bearing with yield reserve stiffness according to claim 1, characterized in that: Also includes: There are two end plates (23) which are detachably arranged at the two ends of the sleeve (5), and the pull rod (7) passes through one of the end plates (23).

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