Chimeric self-resetting anti-seismic energy-dissipation type pier

Abstract

The present application relates to a kind of chimeric self-resetting anti-seismic energy dissipation type pier, the top of four pile foundations is equipped with same bearing platform, the top of bearing platform is equipped with rectangular slot, the inner wall of the bottom of rectangular slot is slidably equipped with rubber pad, the top of rubber pad is equipped with pier column, the outer wall of pier column is fixedly connected with connecting ring, the outer wall of connecting ring is fixedly connected with multiple second fixed blocks, and first viscous damper is rotatably connected between second fixed block and bearing platform;First buffering mechanism, set on the top of bearing platform for buffering rubber pad, so that it eliminates part of earthquake force to pier column;Second buffering mechanism, set between bearing platform and pile foundation, for further buffering earthquake force to bearing platform;When the existing pier is subjected to earthquake, the pier will deform to a certain extent, and the deformation square is arbitrary, if not buffered and dissipated, it is easy to make the pier and the bearing platform connection fracture, and the energy dissipation effect is small.

Description

Technical Field

[0001] This invention belongs to the field of bridge engineering technology, and in particular relates to an interlocking self-resetting seismic energy dissipation bridge pier. Background Technology

[0002] A search revealed a seismic isolation structure for a self-resetting, swaying pier (publication number CN104278620B). This pier includes a main beam, pier, foundation, semi-protruding spherical pier base, pier flange, rubber pad, hollowed-out hemispherical foundation top, shape memory alloy shear bolts, and inclined section blocks. It replaces the fixed connection between the pier and foundation with a hinged connection that allows for swaying. This invention separates the pier from the foundation, using swaying to filter seismic energy, thus protecting both the pier and the foundation. This structure offers significant socio-economic benefits and is worthy of widespread application.

[0003] The structure also has the following disadvantages when in use: the piers and the abutment are connected by bolts. When subjected to an earthquake, the piers will deform to a certain extent. The deformation is arbitrary. If there is no buffering and energy dissipation, the connection between the pier and the abutment is prone to breakage. Moreover, the energy dissipation effect is small and it is not convenient to use. In order to address the above problems, this invention proposes an interlocking self-resetting seismic energy dissipation pier. Summary of the Invention

[0004] In view of this, in order to solve the problem that existing bridge piers will deform under earthquakes, and the deformation is arbitrary, which can easily lead to breakage at the connection between the bridge pier and the abutment if buffering and energy dissipation are not carried out, and the energy dissipation effect is small and inconvenient to use, the present invention provides a self-resetting seismic energy dissipation bridge pier.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A self-resetting, seismic-resistant, and energy-dissipating bridge pier with an interlocking design includes: four pile foundations installed underground, the top of the four pile foundations having the same bearing platform, the top of the bearing platform having a rectangular groove, the bottom inner wall of the rectangular groove having a rubber pad slidingly attached, the top of the rubber pad having a pier column, the outer wall of the pier column being fixedly connected to a connecting ring, the outer wall of the connecting ring being fixedly connected to multiple second fixing blocks, and the second fixing blocks being rotatably connected to the bearing platform with a first viscous damper.

[0007] The first buffer mechanism is set on the top of the pier cap to buffer the rubber pad, thereby eliminating part of the seismic force on the pier column;

[0008] The second buffer mechanism is set between the pile cap and the pile foundation to further buffer the seismic force on the pile cap support.

[0009] Furthermore, the first buffer mechanism includes two sets of first and second sliding grooves opened on the inner wall of the pier. Two sliding blocks are slidably provided on the inner wall of each of the first and second sliding grooves. The same first sliding rod is fixedly connected between two corresponding left and right sliding blocks, and the same second sliding rod is fixedly connected between two corresponding front and rear sliding blocks. 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 the second sliding rod, and the two first springs are respectively located on the front and rear sides of the rubber pad. Two second springs are sleeved on the outer wall of the first sliding rod, and the two second springs are respectively located on the left and right sides of the rubber pad. The two ends of the first springs and the second springs are fixedly connected to the rubber pad and the sliding block on the side closest to each other.

[0010] Furthermore, a first base plate is fixedly connected to the bottom of the rubber pad, and a second base plate is fixedly connected to the bottom inner wall of the rectangular groove. Multiple balls are embedded in the bottom of the first base plate, and the balls abut against the second base plate.

[0011] Furthermore, the second buffer mechanism includes four connecting covers fixedly connected to the bottom of the pile cap. The inner wall of the connecting cover is embedded with a first universal ball. A through hole is opened at the top of the pile foundation. A second viscous damper is installed in the through hole. The end of the second viscous damper away from the pile foundation is fixedly connected to the first universal ball.

[0012] Furthermore, a second universal ball is embedded in the bottom of the second fixed block, and the second universal ball is fixedly connected to the top of the first viscous damper. A first fixed block corresponding to the first viscous damper is fixedly connected to the top of the support platform, and the other end of the first viscous damper is rotatably connected to the first fixed block.

[0013] Furthermore, the bottom of the pier is provided with a hemisphere, and the top of the rubber pad is provided with a groove corresponding to the hemisphere.

[0014] Furthermore, hollow shafts are slidably sleeved on the outer walls of both the first and second sliding rods, and the hollow shafts are fixedly connected to the inner wall of the rubber pad.

[0015] Furthermore, the connecting ring is fixedly connected to the reinforcing steel inside the pier column.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. The self-resetting, shock-resistant, and energy-dissipating bridge pier disclosed in this invention, when the bridge is subjected to a vertical seismic force: firstly, the rubber pad is squeezed, and the deformation of the rubber pad by the squeezing can initially play a buffering and shock-resistant effect. At the same time, the rubber pad drives the pier cap to move downward and squeeze the second viscous damper, and the pier column drives the second fixed block to squeeze the first viscous damper, which can further buffer the shock and dissipate energy.

[0018] 2. The self-resetting seismic energy dissipation bridge pier disclosed in this invention, when the bridge is subjected to seismic forces from the front, rear, left, and right, will cause the rubber pad to move within a rectangular groove via the pier column. When the rubber pad moves to the right, it compresses the second spring on the right side and stretches the second spring on the left side, which can buffer and dissipate the seismic forces from the left and right. When the rubber pad moves forward, it compresses the first spring in front and stretches the first spring behind, which can buffer and dissipate the seismic forces from the front and rear, and prevent the connection between the pier column and the abutment from breaking.

[0019] 3. The self-resetting seismic energy dissipation bridge pier disclosed in this invention can make the pier column tilt to a certain extent on the rubber pad by setting the first viscous damper and the second universal ball, which further buffers and dissipates energy. The ball bearings under the first base plate reduce the friction between the rubber pad and the rectangular groove, which is beneficial for the rubber pad to move in the rectangular groove.

[0020] 4. The self-resetting, seismic-resistant, and energy-dissipating bridge pier disclosed in this invention can buffer and dissipate the seismic forces in the front, rear, left, and right directions of the bridge by setting a rubber pad on the pier platform, and the rubber pad can move within the pier platform. Furthermore, the vertical seismic forces of the pier can be further buffered by setting a first viscous damper and a second viscous damper. At the same time, the pier can tilt to a certain extent on the pier platform, which can effectively prevent the connection between the pier and the pier platform from breaking.

[0021] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0022] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0023] Figure 1 This is a three-dimensional structural schematic diagram of an interlocking self-resetting seismic-resistant energy-dissipating bridge pier according to the present invention;

[0024] Figure 2 This is a schematic cross-sectional view of the pile foundation structure of an embedded self-resetting seismic energy dissipation bridge pier according to the present invention;

[0025] Figure 3 This is a schematic diagram of the second fixing block structure in a self-resetting, seismic-resistant, and energy-dissipating bridge pier according to the present invention;

[0026] Figure 4 This is a schematic diagram of a sliding rod structure in a self-resetting, seismic-resistant, and energy-dissipating bridge pier according to the present invention.

[0027] Figure 5This is a schematic diagram of the ball bearing structure in a self-resetting, seismic-resistant, and energy-dissipating bridge pier according to the present invention.

[0028] Reference numerals: 1. Foundation; 2. Pier; 3. Pile foundation; 4. Rectangular groove; 5. Rubber pad; 6. First fixing block; 7. Connecting ring; 8. Second fixing block; 9. First viscous damper; 10. First slide groove; 11. Second slide groove; 12. Second viscous damper; 13. Connecting cover; 14. First universal ball; 15. Hemisphere; 16. Second universal ball; 17. First base plate; 18. Second base plate; 19. First sliding rod; 20. Second sliding rod; 21. First spring; 22. Sliding block; 23. Second spring; 24. Groove; 25. Ball bearing; 26. Hollow shaft. Detailed Implementation

[0029] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0030] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0031] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0032] Reference Figure 1A self-resetting, seismic-resistant, and energy-dissipating bridge pier with a fitting design includes: four pile foundations 3 set underground, the top of the four pile foundations 3 being provided with the same bearing platform 1, the top of the bearing platform 1 being provided with a rectangular groove 4, the bottom inner wall of the rectangular groove 4 being provided with a rubber pad 5, the top of the rubber pad 5 being provided with a pier column 2, the outer wall of the pier column 2 being fixedly connected with a connecting ring 7, the outer wall of the connecting ring 7 being fixedly connected with a plurality of second fixing blocks 8, and the second fixing blocks 8 being rotatably connected to the bearing platform 1 with a first viscous damper 9.

[0033] The first buffer mechanism is set on the top of the pier cap 1 to buffer the rubber pad 5, so that it can eliminate part of the seismic force on the pier column 2;

[0034] The second buffer mechanism is set between the pier cap 1 and the pile foundation 3 to further buffer the seismic force on the pier cap 1. In the above technical solution, the pier column 2 can be fixed by the rubber pad 5, so that the pier column 2 and the pier cap 1 are elastically connected, effectively preventing the pier cap 1 from breaking. At the same time, the first buffer mechanism and the second buffer mechanism can buffer and dissipate the seismic force in different directions, and reduce the damage to the bridge pier.

[0035] Reference Figure 2 and Figure 4 The first buffer mechanism includes two sets of first sliding grooves 10 and second sliding grooves 11 opened on the inner wall of the pier 1. Two sliding blocks 22 are slidably provided on the inner wall of each of the first sliding grooves 10 and the second sliding groove 11. The same first sliding rod 19 is fixedly connected between the two left and right corresponding sliding blocks 22, and the same second sliding rod 20 is fixedly connected between the two front and rear corresponding sliding blocks 22. The rubber pad 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 located on the front and rear sides of the rubber pad 5, respectively. Two second springs 23 are sleeved on the outer wall of the first sliding rod 19. The two second springs 23 are located on the left and right sides of the rubber pad 5, respectively. The two ends of the first springs 21 and the second springs 23 are fixedly connected to the rubber pad 5 and the sliding block 22 on the side closer to each other, respectively. In the above technical solution, the setting of the first sliding rods 19 and the second sliding rods 20 enables the rubber pad 5 to move back and forth and left and right in the rectangular groove 4, and the setting of the second springs 23 and the first springs 21 can buffer and dissipate the seismic forces in the front, back and left and right.

[0036] Reference Figure 4 and Figure 5 The bottom of the rubber pad 5 is fixedly connected to a first base plate 17, and the bottom inner wall of the rectangular groove 4 is fixedly connected to a second base plate 18. A plurality of balls 25 are embedded in the bottom of the first base plate 17, and the balls 25 abut against the second base plate 18. In the above technical solution, the setting of the balls 25 can reduce the friction between the rubber pad 5 and the rectangular groove 4, making it easier for the rubber pad 5 to move in the rectangular groove 4.

[0037] Reference Figure 2 The second buffer mechanism includes four connecting covers 13 fixedly connected to the bottom of the pile cap 1. The inner wall of the connecting cover 13 is embedded with a first universal ball 14. A through hole is opened at the top of the pile foundation 3. A second viscous damper 12 is installed in the through hole. The end of the second viscous damper 12 away from the pile foundation 3 is fixedly connected to the first universal ball 14. In the above technical solution, the pile cap 1 can be buffered by the setting of the second viscous damper 12 and the first universal ball 14, so that the pile cap 1 and the pile foundation 3 are elastically connected. When subjected to seismic force, the energy can be buffered and dissipated by the second viscous damper 12.

[0038] Reference Figure 1 and Figure 3 The bottom of the second fixing block 8 is embedded with a second universal ball 16, which is fixedly connected to the top of the first viscous damper 9. The top of the pier 1 is fixedly connected with a first fixing block 6 corresponding to the first viscous damper 9. The other end of the first viscous damper 9 is rotatably connected to the first fixing block 6. In the above technical solution, the setting of the second universal ball 16 allows the connecting ring 7 to rotate in multiple directions on multiple first viscous dampers 9, increasing the tilting direction of the pier 2, which is beneficial for protecting the pier 2.

[0039] Reference Figure 3 and Figure 4 The bottom of the pier 2 is provided with a hemisphere 15, and the top of the rubber pad 5 is provided with a groove 24 corresponding to the hemisphere 15. In the above technical solution, the setting of the hemisphere 15 and the groove 24 allows the second viscous damper 12 to rotate and tilt in multiple directions on the rubber pad 5, and facilitates the positioning and installation of the pier 2 on the rubber pad 5.

[0040] Reference Figure 5 Hollow shafts 26 are slidably sleeved on the outer walls of the first sliding rod 19 and the second sliding rod 20. The hollow shafts 26 are fixedly connected to the inner wall of the rubber pad 5. In the above technical solution, the hollow shafts 26 can isolate the first sliding rod 19 and the second sliding rod 20 from the rubber pad 5, which is beneficial for the rubber pad 5 to move in the rectangular groove 4.

[0041] Reference Figure 1 and Figure 3 The connecting ring 7 is fixedly connected to the reinforcing steel inside the pier 2. In the above technical solution, by fixing the connecting ring 7 to the reinforcing steel inside the pier 2, the connecting ring 7 and the pier 2 can form an integral whole, increasing the overall strength.

[0042] The working principle and usage process of this technical solution are as follows:

[0043] When the bridge is subjected to vertical seismic force, the rubber pad 5 is squeezed first. The deformation of the rubber pad 5 by squeezing it can initially play a buffering and seismic resistance role. At the same time, the rubber pad 5 drives the pier cap 1 to move downward and squeeze the second viscous damper 12. The pier column 2 drives the second fixed block 8 to squeeze the first viscous damper 9, which can further buffer and resist seismic forces and dissipate energy.

[0044] When the bridge is subjected to seismic forces from the front, rear, left, and right, the rubber pad 5 moves within the rectangular groove 4 via the pier 2. When the rubber pad 5 moves to the right, it compresses the second spring 23 on the right side and stretches the second spring 23 on the left side, thus buffering and dissipating the seismic forces from the left and right. When the rubber pad 5 moves forward, it compresses the first spring 21 in front and stretches the first spring 21 behind, thus buffering and dissipating the seismic forces from the front and rear, preventing the connection between the pier 2 and the abutment 1 from breaking. At the same time, the setting of the first viscous damper 9 and the second universal ball 16 allows the pier 2 to tilt to a certain extent on the rubber pad 5, further buffering and dissipating the energy. The setting of the ball bearing 25 under the first base plate 17 reduces the friction between the rubber pad 5 and the rectangular groove 4, which is beneficial for the movement of the rubber pad 5 within the rectangular groove 4.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A self-resetting, seismic-resistant, energy-dissipating bridge pier with an interlocking design, characterized in that, include: Four pile foundations (3) are set underground. The top of the four pile foundations (3) is provided with the same pile platform (1). The top of the pile platform (1) is provided with a rectangular groove (4). The bottom inner wall of the rectangular groove (4) is provided with a rubber pad (5). The top of the rubber pad (5) is provided with a pier (2). The outer wall of the pier (2) is fixedly connected with a connecting ring (7). The outer wall of the connecting ring (7) is fixedly connected with multiple second fixing blocks (8). The second fixing blocks (8) are rotatably connected to the pile platform (1) with a first viscous damper (9). The first buffer mechanism is set on the top of the pier (1) to buffer the rubber pad (5) so that it can eliminate part of the seismic force on the pier column (2). The first buffer mechanism includes two sets of first sliding grooves (10) and second sliding grooves (11) opened on the inner wall of the pier (1). The inner walls of the first sliding groove (10) and the second sliding groove (11) are each provided with two sliding blocks (22). The two sliding blocks (22) corresponding to each other on the left and right are fixedly connected with the same first sliding rod (19). The two sliding blocks (22) corresponding to each other on the front and back are fixedly connected with the same second sliding rod (20). The rubber pad (5) is slidably sleeved on the two first sliding rods (19) and the two sliding rods (20). On the second sliding rod (20), two first springs (21) are sleeved on the outer wall of the second sliding rod (20). The two first springs (21) are located on the front and rear sides of the rubber pad (5) respectively. Two second springs (23) are sleeved on the outer wall of the first sliding rod (19). The two second springs (23) are located on the left and right sides of the rubber pad (5) respectively. The two ends of the first springs (21) and the second springs (23) are fixedly connected to the rubber pad (5) and the sliding block (22) on the side close to each other respectively. The bottom of the pier (2) is provided with a hemisphere (15). The top of the rubber pad (5) is provided with a groove (24) corresponding to the hemisphere (15). The second buffer mechanism is set between the pier cap (1) and the pile foundation (3) to further buffer the seismic force on the pier cap (1).

2. The embedded self-resetting seismic-resistant energy-dissipating bridge pier according to claim 1, characterized in that, The bottom of the rubber pad (5) is fixedly connected to a first base plate (17), and the bottom inner wall of the rectangular groove (4) is fixedly connected to a second base plate (18). A plurality of balls (25) are embedded in the bottom of the first base plate (17), and the balls (25) abut against the second base plate (18).

3. The embedded self-resetting seismic-resistant energy-dissipating bridge pier according to claim 1, characterized in that, The second buffer mechanism includes four connecting covers (13) fixedly connected to the bottom of the foundation (1). The inner wall of the connecting cover (13) is embedded with a first universal ball (14). The top of the pile foundation (3) is provided with a through hole, and a second viscous damper (12) is provided in the through hole. The end of the second viscous damper (12) away from the pile foundation (3) is fixedly connected to the first universal ball (14).

4. The embedded self-resetting seismic-resistant energy-dissipating bridge pier according to claim 1, characterized in that, The bottom of the second fixing block (8) is embedded with a second universal ball (16), the second universal ball (16) is fixedly connected to the top of the first viscous damper (9), the top of the support (1) is fixedly connected with a first fixing block (6) corresponding to the first viscous damper (9), and the other end of the first viscous damper (9) is rotatably connected to the first fixing block (6).

5. The embedded self-resetting seismic-resistant energy-dissipating bridge pier according to claim 1, characterized in that, The outer walls of the first sliding rod (19) and the second sliding rod (20) are both fitted with hollow shafts (26), which are fixedly connected to the inner wall of the rubber pad (5).

6. A self-resetting, seismic-resistant, energy-dissipating bridge pier according to any one of claims 1-5, characterized in that, The connecting ring (7) is fixedly connected to the reinforcing bars inside the pier (2).

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