CN-117587698-B - Mosaic type self-resetting anti-seismic energy dissipation type bridge pier

CN117587698BCN 117587698 BCN117587698 BCN 117587698BCN-117587698-B

Abstract

The invention relates to a mosaic type self-resetting earthquake-resistant energy-dissipating bridge pier, wherein the tops of four pile foundations are provided with the same bearing platform, the tops of the four pile foundations are provided with rectangular grooves, the inner walls of the bottoms of the rectangular grooves are slidably provided with rubber pads, the tops of the rubber pads are provided with pier columns, the outer walls of the pier columns are fixedly connected with connecting rings, the outer walls of the connecting rings are fixedly connected with a plurality of second fixing blocks, a first viscous damper is rotationally connected between the second fixing blocks and the bearing platform, a first buffer mechanism is arranged at the tops of the bearing platforms and used for buffering the rubber pads so as to eliminate part of earthquake force of the pier columns, and a second buffer mechanism is arranged between the bearing platform and the pile foundations and used for further buffering the earthquake force of the bearing platform.

Inventors

LIU HAIMING
PAN FEI
WANG LIYUE
LI HAIJIAO
CHEN YIQIAN
YANG JIAN
LI YUANCHAO
YAO ZHILAN

Assignees

招商局重庆交通科研设计院有限公司
天津城建设计院有限公司

Dates

Publication Date: 20260505
Application Date: 20231113

Claims (6)

1. The embedded self-resetting anti-seismic energy dissipation pier is characterized by comprising four pile foundations (3) arranged underground, wherein the tops of the four pile foundations (3) are provided with the same bearing platform (1), the tops of the bearing platforms (1) are provided with rectangular grooves (4), the inner walls of the bottoms of the rectangular grooves (4) are slidably provided with rubber pads (5), the tops of the rubber pads (5) are provided with pier columns (2), the outer walls of the pier columns (2) are fixedly connected with connecting rings (7), the outer walls of the connecting rings (7) are fixedly connected with a plurality of second fixing blocks (8), and first viscous dampers (9) are rotationally connected between the second fixing blocks (8) and the bearing platforms (1); The first buffer mechanism is arranged at the top of the bearing platform (1) and is used for buffering the rubber cushion (5) to enable the rubber cushion (2) to eliminate partial earthquake force, the first buffer mechanism comprises two groups of first sliding grooves (10) and second sliding grooves (11) formed in the inner wall of the bearing platform (1), two sliding blocks (22) are slidably arranged on the inner walls of the first sliding grooves (10) and the second sliding grooves (11), the same first sliding rod (19) is fixedly connected between the two sliding blocks (22) which correspond to each other left and right, the same second sliding rod (20) is fixedly connected between the two sliding blocks (22) which correspond to each other front and back, the rubber cushion (5) is slidably sleeved on the two first sliding rods (19) and the two second sliding rods (20), two first springs (21) are sleeved on the outer wall of the second sliding rod (20), the two first springs (21) are respectively positioned on the front side and the rear sides of the rubber cushion (5), two second springs (23) are sleeved on the outer wall of the first sliding rod (19), the two second springs (23) are fixedly connected with the two second sliding rods (20) which are positioned on the two sides of the two rubber cushion (2) respectively, the two second springs (23) are respectively positioned on the two sides of the rubber cushion (5), the top of the rubber pad (5) is provided with a groove (24) corresponding to the semicircular sphere (15); The second buffer mechanism is arranged between the bearing platform (1) and the pile foundation (3) and is used for further buffering earthquake force for supporting the bearing platform (1).
2. The embedded self-resetting earthquake-resistant energy dissipation pier according to claim 1, characterized in that a first bottom plate (17) is fixedly connected to the bottom of the rubber pad (5), a second bottom plate (18) is fixedly connected to the inner wall of the bottom of the rectangular groove (4), a plurality of balls (25) are embedded into the bottom of the first bottom plate (17), and the balls (25) are abutted against the second bottom plate (18).
3. The embedded self-resetting anti-seismic energy dissipation pier according to claim 1, wherein the second buffer mechanism comprises four connecting covers (13) fixedly connected to the bottom of the bearing platform (1), first universal balls (14) are embedded in the inner wall of the connecting covers (13), through holes are formed in the tops of the pile foundations (3), second viscous dampers (12) are arranged in the through holes, and one ends, far away from the pile foundations (3), of the second viscous dampers (12) are fixedly connected with the first universal balls (14).
4. The embedded self-resetting anti-seismic energy dissipation pier according to claim 1, wherein a second universal ball (16) is embedded in the bottom of the second fixed block (8), the second universal ball (16) is fixedly connected to the top of the first viscous damper (9), the top of the bearing platform (1) is fixedly connected with a first fixed block (6) corresponding to the first viscous damper (9), and the other end of the first viscous damper (9) is rotationally connected with the first fixed block (6).
5. The embedded self-resetting earthquake-resistant energy dissipation pier according to claim 1, characterized in that the outer walls of the first sliding rod (19) and the second sliding rod (20) are respectively provided with a hollow shaft (26) in a sliding sleeve manner, and the hollow shafts (26) are fixedly connected to the inner wall of the rubber pad (5).
6. A self-resetting earthquake-resistant and energy-dissipating pier according to any of claims 1-5, characterized in that the connecting ring (7) is fixedly connected to the steel bars in the pier column (2).

Description

Mosaic type self-resetting anti-seismic energy dissipation type bridge pier Technical Field The invention belongs to the technical field of bridge engineering, and particularly relates to a chimeric self-resetting anti-seismic energy dissipation type bridge pier. Background Through the search, the vibration isolation structure of the self-resetting swinging pier column with the bulletin number of CN104278620B comprises a girder, a pier, a bearing platform, a semi-convex spherical pier bottom, a pier wing plate, a rubber cushion layer, a hollowed hemispherical bearing platform top, a shape memory alloy shear bolt and an inclined section stop block. The bridge pier and the bearing platform are fixedly connected into a hinged joint capable of swinging. The invention separates the bridge pier column from the foundation, sways and filters the earthquake energy, protects the bridge pier and the foundation, has good social and economic benefits, and is worthy of popularization and application. The structure has the following defects that the bridge pier is connected with the bearing platform through the bolts when the structure is used, the bridge pier can deform to a certain extent when the bridge pier is subjected to an earthquake, the deformation is square and random, if buffering energy dissipation is not performed, the connection part of the bridge pier and the bearing platform is easy to break, the energy dissipation effect is small, the use is inconvenient, and the embedded self-resetting earthquake-resistant energy dissipation bridge pier is provided aiming at the problems. Disclosure of Invention In view of the above, the invention provides a mosaic type self-resetting earthquake-resistant energy dissipation pier, which aims to solve the problems that when the existing pier is subjected to an earthquake, the pier can deform to a certain extent, if the deformation is square and random, the joint of the pier and a bearing platform is easy to break, the energy dissipation effect is small, and the use is inconvenient. In order to achieve the above purpose, the present invention provides the following technical solutions: The embedded self-resetting anti-seismic energy dissipation pier comprises four pile foundations arranged underground, wherein the tops of the four pile foundations are provided with a same bearing platform, the tops of the bearing platform are provided with rectangular grooves, the inner walls of the bottoms of the rectangular grooves are slidably provided with rubber pads, the tops of the rubber pads are provided with pier columns, the outer walls of the pier columns are fixedly connected with connecting rings, the outer walls of the connecting rings are fixedly connected with a plurality of second fixing blocks, and a first viscous damper is rotationally connected between each second fixing block and the bearing platform; the first buffer mechanism is arranged at the top of the bearing platform and used for buffering the rubber pad so as to eliminate partial earthquake force on the pier column; and the second buffer mechanism is arranged between the bearing platform and the pile foundation and is used for further buffering earthquake force for supporting the bearing platform. Further, the first buffer mechanism comprises two groups of first sliding grooves and second sliding grooves which are formed in the inner wall of the bearing platform, two sliding blocks are arranged on the inner wall of each of the first sliding grooves and the second sliding grooves in a sliding mode, the same first sliding rod is fixedly connected between the two sliding blocks corresponding to each other in the left-right mode, the same second sliding rod is fixedly connected between the two sliding blocks corresponding to each other in the front-back mode, the rubber pad is slidably sleeved on the two first sliding rods and the two second sliding rods, two first springs are sleeved on the outer wall of each second sliding rod and are respectively located on the front side and the rear side of the rubber pad, two second springs are sleeved on the outer wall of each first sliding rod and are respectively located on the left side and the right side of the rubber pad, and two ends of each first spring and each second spring are respectively fixedly connected with the rubber pad and one side, close to each other, of the two second springs. Further, the bottom fixedly connected with first bottom plate of rubber pad, the bottom inner wall fixedly connected with second bottom plate of rectangular channel, the bottom embedding of first bottom plate is equipped with a plurality of balls, the ball is contradicted with the second bottom plate. Further, the second buffer gear includes four connecting covers of fixed connection in the cushion cap bottom, and the inner wall embedding of connecting cover is equipped with first universal ball, and the through-hole has been seted up at the top of pile foundation, is equipped with