CN-122013658-A - Multiple friction damping anti-falling shock-absorbing spherical support

CN122013658ACN 122013658 ACN122013658 ACN 122013658ACN-122013658-A

Abstract

The invention provides a multiple friction damping anti-falling shock-absorbing spherical support, and relates to the technical field of bridge construction. The multi-friction damping anti-falling shock-absorbing spherical support comprises an upper support plate, a planar sliding plate, a spherical crown lining plate, a spherical sliding plate, a pressure-bearing component, a high-friction sliding piece, a wedge-shaped damping device, a lower support plate, a sleeve, an anchor rod and an anchor bolt, wherein a planar stainless steel sliding plate is arranged on the inner cavity surface of the upper support plate, the planar sliding plate is arranged above the spherical crown lining plate and is in contact with the planar stainless steel sliding plate, the spherical crown lining plate is placed on the spherical sliding plate, and the spherical sliding plate is installed at the upper end of the pressure-bearing component. According to the invention, the first heavy friction energy consumption is realized through the cooperation of the high friction sliding piece and the high friction contact plate, the secondary damping superposition energy consumption is realized through the extrusion of the pressure-bearing component trapezoid structure and the wedge-shaped damping device, and the rigid limit is realized through the limit stop, so that the problems of rigid collision and beam falling of the beam body are effectively solved, and the anti-seismic safety performance of the bridge is remarkably improved.

Inventors

ZHOU YUAN
LI RANGWEI
WANG YINFANG
You Qixuan
ZHANG TAO
JIANG TAO
Qiu Puqin
LI CONG
HU JUNWEI

Assignees

四川零公里工程构件有限责任公司

Dates

Publication Date: 20260512
Application Date: 20260331

Claims (8)

1. The utility model provides a multiple friction damping anti-falling shock attenuation ball-type support, includes upper bracket board (1), plane slide (2), spherical crown welt (3), sphere slide (10), pressure-bearing component (9), high friction slider (8), wedge damping device (6), lower bracket board (7), sleeve (4), stock (5) and anchor bolt (12), wherein upper bracket board (1) inner chamber surface is equipped with plane stainless steel slide (14), plane slide (2) set up above spherical crown welt (3) and with plane stainless steel slide (14) contact, spherical crown welt (3) are placed on sphere slide (10), sphere slide (10) are installed in pressure-bearing component (9) upper end; The lower end of the pressure-bearing assembly (9) is provided with a lower end spigot (21), and the high-friction sliding piece (8) is arranged in the lower end spigot (21); the upper surface of the lower support plate (7) is provided with a high-friction contact plate (17), and the high-friction sliding piece (8) is in contact fit with the high-friction contact plate (17); The wedge-shaped damping device (6) is fixedly arranged on the lower support plate (7) and is opposite to the lower structure of the pressure-bearing component (9).
2. The multi-friction damping anti-falling shock-absorbing spherical support according to claim 1, wherein the lower structure of the pressure-bearing component (9) is specifically a quadrangle trapezoid structure, a straight sliding surface is arranged in the middle of the quadrangle trapezoid structure, the wedge-shaped damping device (6) is located at the side of the quadrangle trapezoid structure, when the earthquake displacement is smaller than a preset value, the pressure-bearing component (9) slides on the high-friction contact plate (17) through the high-friction sliding piece (8) to consume energy, and when the earthquake displacement exceeds the preset value, the quadrangle trapezoid structure of the pressure-bearing component (9) slides into the wedge-shaped damping device (6) to be in extrusion contact with the wedge-shaped damping device.
3. The multi-friction damping anti-falling shock-absorbing spherical support according to claim 1, wherein limit stops (13) are arranged on two sides of the upper support plate (1) in the displacement direction, a displacement downward stop block (19) corresponding to the limit stop block (13) is arranged at the upper end of the pressure-bearing assembly (9), and when the displacement reaches a limit, the limit stop block (13) is in mechanical abutting connection with the displacement downward stop block (19) to limit the displacement of the beam body.
4. The multi-friction damping anti-falling shock-absorbing spherical support is characterized in that sliding stop blocks (15) are arranged on two limiting sides of the upper support plate (1), side stainless steel sliding plates (16) are welded on the inner surfaces of the sliding stop blocks (15), copper-based sliding strips (11) are welded on the surfaces of limiting downward stop blocks (20) at the upper ends of the pressure-bearing assemblies (9), and the copper-based sliding strips (11) are in contact fit with the side stainless steel sliding plates (16) to form lateral limiting sliding surfaces.
5. The multi-friction damping anti-falling shock-absorbing spherical support according to claim 1, wherein the wedge-shaped damping device (6) is anchored on the lower support plate (7) through bolts (18), the inclined plane angle of the wedge-shaped damping device (6) can be adjusted according to damping requirements, and a high-friction material layer is arranged on the inner side surface of the wedge-shaped damping device (6).
6. The multi-friction damping anti-falling shock-absorbing spherical support is characterized in that the spherical surface of the spherical crown liner plate (3) is subjected to polishing chromium plating or mirror surface stainless steel coating treatment, the upper surface of the plane sliding plate (2) is coated with silicone grease, and the plane sliding plate (2) forms a low-friction sliding surface with the plane stainless steel sliding plate (14) through the silicone grease.
7. The multi-friction damping anti-falling shock-absorbing spherical support according to claim 1, wherein the high-friction sliding piece (8) is made of metal or high polymer materials.
8. The multi-friction damping anti-falling shock-absorbing spherical support is characterized in that four corners of the upper support plate (1) and the lower support plate (7) are respectively provided with an anchoring hole, and the sleeve (4) is in threaded connection with the anchor rod (5) and is in anchoring connection with the upper support plate (1) and the lower support plate (7) through the anchoring bolts (12).

Description

Multiple friction damping anti-falling shock-absorbing spherical support Technical Field The invention relates to the technical field of bridge construction, in particular to a multiple friction damping anti-falling shock-absorbing spherical support. Background The spherical support is used as a key force transmission component in a bridge structure, has the advantages of large bearing capacity, flexible rotation and the like, is widely applied to various bridge projects at present, and mainly has the functions of transmitting load and adapting to displacement and rotation angle of a beam body. Along with the improvement of bridge design standards, higher requirements are put forward on the safety performance of the support under complex working conditions, particularly under the action of earthquake. However, the conventional spherical support has relatively single function, lacks an effective damping energy consumption mechanism, is difficult to consume earthquake energy when an earthquake occurs, and leads to the beam body to be easily damaged due to rigid collision, and meanwhile, the conventional support has limited displacement control capability under the action of strong earthquake, lacks reliable limiting measures and has the risk of sliding down the beam body. Therefore, a person skilled in the art provides a multiple friction damping anti-falling shock absorbing spherical support to solve the problems set forth in the background art. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a multi-friction damping anti-falling shock-absorbing spherical support, which solves the problems that the rigid collision of a beam body is damaged when the existing spherical support lacks damping energy consumption mechanism and the beam body is easy to slide under the action of strong shock due to limited displacement control capability. In order to achieve the above purpose, the invention is realized by the following technical scheme: The utility model provides a multiple friction damping anti-falling shock attenuation ball-type support, includes upper bracket plate, plane slide, spherical crown welt, sphere slide, pressure-bearing component, high friction slider, wedge damping device, lower bracket plate, sleeve, stock and anchor bolt, upper bracket plate inner chamber surface is equipped with plane stainless steel slide, plane slide sets up above spherical crown welt and contacts with plane stainless steel slide, spherical crown welt is placed on sphere slide, the upper end at pressure-bearing component is installed to sphere slide; The lower end of the pressure-bearing component is provided with a lower end spigot, and the high-friction sliding piece is arranged in the lower end spigot; The upper surface of the lower support plate is provided with a high-friction contact plate, and the high-friction sliding piece is in contact fit with the high-friction contact plate; The wedge-shaped damping device is fixedly arranged on the lower support plate and is opposite to the lower structure of the pressure-bearing assembly; Through the technical scheme, the first heavy friction energy consumption is realized through the cooperation of the high friction sliding piece and the high friction contact plate, the secondary damping superposition energy consumption is realized by utilizing the extrusion of the pressure-bearing component trapezoid structure and the wedge-shaped damping device, the rigidity limit is realized through the limit stop, the problems of the rigid collision and the beam falling of the beam body are effectively solved, and the anti-seismic safety performance of the bridge is remarkably improved. Further, the lower structure of the pressure-bearing component is specifically a quadrangle trapezoid structure, a straight sliding surface is arranged in the middle of the quadrangle trapezoid structure, the wedge-shaped damping device is positioned at the side of the quadrangle trapezoid structure, when the earthquake displacement is smaller than a preset value, the pressure-bearing component slides on the high-friction contact plate through the high-friction sliding piece to consume energy, and when the earthquake displacement exceeds the preset value, the quadrangle trapezoid structure of the pressure-bearing component slides into the wedge-shaped damping device and is in extrusion contact with the wedge-shaped damping device; Through the technical scheme, the multistage energy consumption function of the support is realized, the high-friction sliding is utilized to carry out primary energy consumption under the action of small earthquake, the secondary friction damping is generated through the extrusion of the trapezoid structure and the wedge-shaped device under the action of large earthquake, the energy dissipation efficiency is remarkably improved, and meanwhile, the geometrical characteristic of the wedge-shaped structure is utilized to provide post-earthquake self