Graded energy consumption type seismic mitigation and isolation support

Abstract

The utility model discloses a graded energy consumption type seismic mitigation and isolation support, and relates to the technical field of seismic mitigation and isolation supports. The rubber support is connected to the bottom of the spherical support; the bottom basin assembly comprises a bottom plate and supporting stoppers, the supporting stoppers are fixed to the periphery of the bottom plate, the ends, away from the spherical support, of the rubber supports are connected with the bottom plate, the rubber supports are located in the supporting stoppers, and threaded holes are formed in the ends, away from the bottom plate, of the supporting stoppers; and the limiting stop block is fixed in the threaded hole in the supporting stop piece through the anti-shear pin, and the inner edge of the limiting stop block protrudes out of the inner side of the supporting stop piece and is used for limiting the spherical support. The graded energy dissipation function is achieved, when a bridge and a building structure normally operate, the spherical support horizontally moves and turns, and friction energy dissipation of the spherical support is mainly achieved; under the action of an earthquake, the rubber support is subjected to shear deformation, and the spherical support and the rubber support are combined to consume energy.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration-damping and isolation bearings, and more particularly to a graded energy-consuming vibration-damping and isolation bearing. Background Art

[0002] Bridge bearings are crucial connectors in bridge structures, determining their force transmission paths and dynamic performance under earthquakes. Spherical bearings, commonly used on highway and railway bridges, generally lack seismic isolation capabilities. Under earthquakes, fixed and one-way bearing limiters and connecting bolts can fracture or shear to varying degrees. Movable bearings can also displace excessively, exceeding their designed displacement and resulting in voids.

[0003] Therefore, how to provide a graded energy-absorbing seismic isolation bearing that can dissipate energy during normal operation and at the same time dissipate energy under earthquake action is an urgent problem that needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the utility model provides a graded energy-absorbing seismic isolation bearing, which aims to solve the problems in the above-mentioned background technology. It combines ordinary spherical bearings and rubber bearings to realize the graded energy-absorbing function. When bridges and building structures operate normally, the spherical bearings undergo horizontal displacement and rotation, which is mainly due to the friction energy consumption of the spherical bearings; under the action of earthquakes, the rubber bearings undergo shear deformation, and the spherical bearings and rubber bearings consume energy in combination.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a graded energy-dissipating seismic isolation bearing, comprising:

[0007] Spherical bearing;

[0008] A rubber bearing connected to the bottom of the spherical bearing;

[0009] The bottom basin assembly includes a bottom plate and a support block, wherein the support block is fixed around the bottom plate, the end of the rubber support away from the spherical support is connected to the bottom plate, and the rubber support is located inside the support block, and the end of the support block away from the bottom plate is provided with a threaded hole;

[0010] A limit stop block is fixed in the threaded hole on the support stop member through a shear pin, and the inner edge of the limit stop block protrudes from the inner side of the support stop member, so as to limit the spherical support.

[0011] According to the graded energy-absorbing and seismic-isolating bearing provided by the present invention, the spherical bearing comprises:

[0012] An upper support plate, wherein the lower surface edge of the upper support plate has a first limiting ring;

[0013] A spherical cap is provided below the upper support plate, wherein the upper surface of the spherical cap contacts the lower surface of the upper support plate to dissipate friction energy, and the lower surface of the spherical cap is a spherical surface;

[0014] The lower support plate is arranged below the spherical crown. A spherical groove is provided on the upper surface of the lower support plate. The spherical groove contacts the lower surface of the spherical crown for friction energy consumption, and a portion of the lower support plate extends to the interior of the first limit stop ring so that the first limit stop ring limits the lower support plate. The rubber support is connected to the lower support plate.

[0015] According to the graded energy-absorbing and seismic isolation bearing provided by the present invention, a first friction plate is provided on the lower surface of the upper bearing plate, the first friction plate is located inside the first limit ring, and a flat slide plate is provided on the upper surface of the spherical crown for absorbing friction energy with the first friction plate.

[0016] According to the graded energy-dissipating seismic isolation bearing provided by the present invention, a spherical slide plate for absorbing energy by friction with the spherical surface of the spherical crown is provided in the spherical groove on the upper surface of the lower bearing plate.

[0017] According to the graded energy-absorbing and seismic isolation bearing provided by the present invention, the rubber bearing includes an upper connecting plate, a rubber bearing body and a lower connecting plate connected in sequence from top to bottom, the upper connecting plate is connected to the lower bearing plate, and the lower connecting plate is connected to the base plate.

[0018] According to the graded energy-absorbing and seismic-isolating bearing provided by the present invention, the rubber bearing body is a laminated structure formed by steel plates and rubber.

[0019] According to the graded energy-absorbing and seismic-isolating bearing provided by the present invention, the support block is a cylindrical structure.

[0020] According to the graded energy-absorbing and seismic-isolating bearing provided by the present invention, the support block and the base plate are an integrally formed structure.

[0021] According to the graded energy-absorbing and seismic-isolating bearing provided by the present invention, the height of the supporting block is greater than the height of the rubber bearing.

[0022] According to the graded energy-absorbing and seismic-isolating bearing provided by the present invention, the limit block is a semicircular ring structure or a circular ring structure.

[0023] It can be seen from the above technical solution that compared with the existing technology, the utility model discloses a graded energy-absorbing seismic isolation bearing. By combining the spherical bearing and the rubber bearing, the spherical bearing performs its function when the bridge is operating normally. When the spherical bearing undergoes horizontal displacement or rotation and is subjected to the temperature change effect, wind load, and constant live load of the bridge, the spherical bearing can consume friction energy through rotation and displacement to ensure the safety of the upper structure of the graded energy-absorbing seismic isolation bearing; during an earthquake, the horizontal force on the rubber bearing increases and exceeds the design shear force value of the shear pin. The shear pin is cut off, and the rubber bearing at the bottom of the spherical bearing is displaced and released, shear deformation occurs, and the damping energy dissipation function is exerted, with good seismic isolation effect, improving the ability of the bridge to withstand extreme loads such as earthquakes, and thus achieving graded energy dissipation. The rubber bearing can withstand vertical pressure. During earthquake displacement, the support block limits the displacement of the rubber bearing and protects the bearing structure. At the same time, the restoring force generated after the rubber bearing is deformed is conducive to the restoration of the bearing after the earthquake. That is, the utility model realizes the graded energy dissipation function. When the bridge and building structure are operating normally, the spherical bearing undergoes horizontal displacement and rotation, which is mainly due to the friction energy consumption of the spherical bearing. Under the action of an earthquake, the rubber bearing undergoes shear deformation, and the combined energy of the spherical bearing and the rubber bearing is consumed. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0025] Figure 1 A schematic diagram of the structure of the graded energy-absorbing and seismic-isolating bearing provided by the present utility model;

[0026] Figure 2 A top view of the bottom basin assembly provided by the utility model;

[0027] Figure 3 The limit stop provided by the utility model is a structural schematic diagram of a semicircular ring structure.

[0028] In the figure: 1 is the upper support plate; 2 is the flat slide; 3 is the spherical crown; 4 is the spherical slide; 5 is the lower support plate; 6 is the shear pin; 7 is the limit block; 8 is the rubber support; 9 is the bottom basin assembly. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figure 1 and 2 The embodiment of the utility model discloses a graded energy-absorbing and seismic-isolating bearing, comprising: a spherical bearing, a rubber bearing 8, a bottom basin assembly 9 and a limit block 7.

[0031] The rubber bearing 8 is connected to the bottom of the spherical bearing. Both the spherical bearing and the rubber bearing 8 are common bearing structures.

[0032] The bottom basin assembly 9 includes a bottom plate and a support block, which is fixed around the bottom plate. The end of the rubber support 8 away from the spherical support is connected to the bottom plate, and the rubber support 8 is located inside the support block. A threaded hole is provided at the end of the support block away from the bottom plate.

[0033] The limit block 7 is fixed in the threaded hole on the support block through the shear pin 5, and the inner edge of the limit block 7 protrudes from the inner side of the support block, which is used to limit the spherical bearing.

[0034] It should be noted that the top of the spherical bearing is bolted to the bridge or building superstructure, and the bottom plate of the bottom basin assembly 9 is bolted to the pier or building substructure. The present invention combines the spherical bearing with the rubber bearing 8, allowing the spherical bearing to function during normal bridge operation. When the spherical bearing undergoes horizontal displacement or rotation, and is subjected to bridge temperature changes, wind loads, and constant live loads, the spherical bearing can dissipate frictional energy through rotation and displacement, ensuring the safety of the graded energy-dissipating seismic isolation bearing superstructure. During an earthquake, the horizontal force on the rubber bearing 8 increases, exceeding the designed shear force value of the shear pin 5. The shear pin 5 shears, causing the rubber bearing 8 at the bottom of the spherical bearing to displace and release, shearing and deforming, thus performing a damping and energy-dissipating function. This provides a good seismic isolation effect, improving the bridge's ability to withstand extreme loads such as earthquakes, and thus achieving graded energy dissipation. The rubber bearing 8 can withstand vertical pressure. During earthquake displacement, the support stopper limits the displacement of the rubber bearing 8, protecting the bearing structure. At the same time, the restoring force generated by the deformation of the rubber bearing 8 facilitates its post-earthquake reset.

[0035] According to the graded energy-absorbing and seismic-isolating bearing provided by the present invention, the spherical bearing comprises: an upper bearing plate 1 , a spherical crown 3 and a lower bearing plate 5 .

[0036] The lower edge of the upper support plate 1 has a first limit stop ring; the first limit stop ring is integrally formed with the upper support plate 1. The upper support plate 1 is processed with connection holes for connecting to the bridge or building superstructure through bolts.

[0037] The spherical cap 3 is arranged below the upper support plate 1 , and the upper surface of the spherical cap 3 contacts the lower surface of the upper support plate 1 for friction energy consumption, and the lower surface of the spherical cap 3 is a spherical surface.

[0038] The lower support plate 5 is disposed below the spherical crown 3. A spherical groove is provided on the upper surface of the lower support plate 5. The spherical groove contacts the lower surface of the spherical crown 3 to dissipate frictional energy. A portion of the lower support plate 5 extends into the interior of the first limit stop ring, allowing the first limit stop ring to limit the position of the lower support plate 5. The rubber support 8 is connected to the lower support plate 5. A threaded hole is machined on the lower support plate 5 for connection to the rubber support 8.

[0039] According to the graded energy-dissipating seismic isolation bearing provided by the present invention, a first friction plate is provided on the lower surface of the upper bearing plate 1, and the first friction plate is located inside the first limit ring. A flat slide 2 is provided on the upper surface of the spherical crown 3 for frictionally dissipating energy with the first friction plate. In this embodiment, the first friction plate is preferably a stainless steel plate welded to the lower surface of the upper bearing plate 1. The upper surface of the spherical crown 3 is a planar structure, and a circular groove is provided on the upper surface of the spherical crown 3. The flat slide 2 is disposed within the circular groove, and the upper surface of the flat slide 2 protrudes from the upper surface of the spherical crown 3, so that only the flat slide 2 contacts the stainless steel plate on the lower surface of the upper bearing plate 1. When the bridge is subjected to temperature changes, wind loads, and constant loads, the flat slide 2 and the stainless steel plate engage in sliding friction to dissipate energy.

[0040] According to the graded energy-dissipating seismic isolation bearing provided by the present invention, a spherical slide 4 is disposed within the spherical groove on the upper surface of the lower bearing plate 5, for frictionally dissipating energy with the spherical surface of the spherical crown 3. Preferably, a groove is disposed within the spherical groove on the upper surface of the lower bearing plate 5, and the spherical slide 4 is disposed within the groove such that the upper surface of the spherical slide 4 protrudes from the surface of the spherical groove. When the bridge is subjected to temperature changes, wind loads, or constant live loads, the spherical slide 4 and the lower surface of the spherical crown 3 dissipate frictional energy through rotation and relative sliding. In other embodiments, a friction plate or chrome plating may also be provided on the spherical surface of the spherical crown 3.

[0041] The graded energy-dissipating seismic isolation bearing provided by the present invention comprises an upper connecting plate, a rubber bearing body, and a lower connecting plate, connected sequentially from top to bottom. The upper connecting plate is connected to the lower bearing plate 5, which in turn is connected to the base plate. The rubber bearing 8 possesses certain pressure-bearing and horizontal shear energy-dissipating functions, while also providing a good seismic isolation effect, enhancing the bridge's ability to withstand extreme loads such as earthquakes. Furthermore, the deformation of the rubber bearing 8 generates a restoring force, which facilitates the post-earthquake reset of the graded energy-dissipating seismic isolation bearing.

[0042] According to the graded energy dissipation type seismic isolation bearing provided by the present invention, the rubber bearing body is a laminated structure formed by steel plates and rubber. The specific structure of the rubber bearing body can refer to the structure of the rubber bearing 8 in the prior art.

[0043] According to the graded energy-absorbing and seismic-isolating bearing provided by the present invention, the support block is a cylindrical structure. By setting the support block into a cylindrical structure, the support block exerts equal blocking force on all sides of the rubber bearing 8 when shear deformation occurs.

[0044] According to the graded energy-absorbing and seismic-isolating bearing provided by the present invention, the support block and the bottom plate are integrally formed, thereby improving the structural strength of the bottom basin assembly 9.

[0045] According to the graded energy dissipation type seismic isolation bearing provided by the present invention, the height of the support block is greater than the height of the rubber bearing 8. The support block can limit the shear displacement of the rubber bearing 8, ensuring the integrity of the graded energy dissipation type seismic isolation bearing structure and the safety of the bridge structure.

[0046] See also Figure 3 According to the graded energy-absorbing and seismic isolation bearing provided by the present invention, the limit block 7 is a semicircular ring structure or a circular ring structure. In other embodiments, the limit block ring can also be configured to be composed of multiple arc-shaped blocks, and the multiple arc-shaped blocks can be connected to the top of the support block and then spliced ​​into a circular ring structure.

[0047] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0048] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A graded energy-absorbing seismic isolation bearing, characterized in that: include: Spherical bearing; A rubber bearing connected to the bottom of the spherical bearing; The bottom basin assembly includes a bottom plate and a support block, wherein the support block is fixed around the bottom plate, the end of the rubber support away from the spherical support is connected to the bottom plate, and the rubber support is located inside the support block, and the end of the support block away from the bottom plate is provided with a threaded hole; A limit stop block is fixed in the threaded hole on the support stop member through a shear pin, and the inner edge of the limit stop block protrudes from the inner side of the support stop member, so as to limit the spherical support.

2. The graded energy-absorbing seismic isolation bearing according to claim 1, characterized in that: The spherical bearing comprises: An upper support plate, wherein the lower surface edge of the upper support plate has a first limiting ring; A spherical cap is provided below the upper support plate, wherein the upper surface of the spherical cap contacts the lower surface of the upper support plate to dissipate friction energy, and the lower surface of the spherical cap is a spherical surface; The lower support plate is arranged below the spherical crown. A spherical groove is provided on the upper surface of the lower support plate. The spherical groove contacts the lower surface of the spherical crown for friction energy consumption, and a portion of the lower support plate extends to the interior of the first limit stop ring so that the first limit stop ring limits the lower support plate. The rubber support is connected to the lower support plate.

3. The graded energy-absorbing seismic isolation bearing according to claim 2, characterized in that: A first friction plate is provided on the lower surface of the upper support plate, and the first friction plate is located inside the first limit ring. A flat slide plate is provided on the upper surface of the spherical crown for consuming friction energy with the first friction plate.

4. The graded energy-absorbing seismic isolation bearing according to claim 2 or 3, characterized in that: A spherical slide plate for absorbing friction energy with the spherical surface of the spherical crown is provided in the spherical groove on the upper surface of the lower support plate.

5. The graded energy-absorbing seismic isolation bearing according to claim 2, characterized in that: The rubber support includes an upper connecting plate, a rubber support body and a lower connecting plate which are sequentially connected from top to bottom. The upper connecting plate is connected to the lower support plate, and the lower connecting plate is connected to the bottom plate.

6. The graded energy-absorbing seismic isolation bearing according to claim 5, characterized in that: The rubber bearing body is a laminated structure formed by steel plates and rubber.

7. The graded energy-absorbing seismic isolation bearing according to claim 1, characterized in that: The supporting block is a cylindrical structure.

8. The graded energy-absorbing seismic isolation bearing according to claim 1, characterized in that: The support stopper and the bottom plate are an integrally formed structure.

9. The graded energy-absorbing seismic isolation bearing according to claim 7 or 8, characterized in that: The height of the support stopper is greater than the height of the rubber support.

10. The graded energy-absorbing seismic isolation bearing according to claim 1, characterized in that: The limit stopper is a semicircular ring structure or a circular ring structure.

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