Anti-seismic prefabricated segment assembled bridge pier connecting device

Abstract

This invention relates to a seismic-resistant precast segmental bridge pier connection device. Two precast piers, one upper and one lower, are fixedly connected by a connecting seat. A connecting sleeve is fixedly connected to the outer wall of the connecting seat. A connecting ring is located above the connecting seat. The connecting ring and the connecting sleeve are respectively fitted onto the upper and lower precast piers. Multiple first rotating seats are fixedly connected to the outer walls of both the connecting sleeve and the connecting ring. A common elastic plate is rotatably connected between two corresponding upper and lower first rotating seats to further fix the two precast piers, enabling them to automatically return to their original position when tilted. A buffer mechanism is provided on the connecting seat to buffer the upper precast pier, increasing the seismic resistance at the connection point. This invention addresses the problem that existing precast segmental bridge pier connections are rigid, leading to pier damage and poor seismic resistance if vibration damping is not implemented during bridge vibrations.

Description

Technical Field

[0001] This invention belongs to the field of seismic resistance technology for bridge piers, and relates to a seismic-resistant prefabricated segmental bridge pier connection device. Background Technology

[0002] With the advancement of urban transportation and the construction of cross-sea bridges, the demand for rapid bridge construction within limited sites is gradually increasing. However, traditional cast-in-place concrete bridge construction methods inevitably require waiting for the concrete to set, leading to long construction periods. Furthermore, the quality of cast-in-place concrete is susceptible to environmental factors, making it difficult to guarantee its durability in harsh environments. Precast assembly technology is a feasible solution to this problem. Currently, precast technology for bridge superstructures is relatively mature, while the application of precast assembly technology for bridge substructures, especially piers, is less common. Domestic engineering examples that have applied this technology include the Donghai Bridge and the Hangzhou Bay Bridge, both located in low-intensity seismic zones.

[0003] CN106869014B discloses a knob-type prefabricated segmental bridge pier assembly connection device, comprising, from bottom to top: a lower prefabricated segment, a first connecting part, a knob part, a second connecting part, and an upper prefabricated segment. The first connecting part connects the lower prefabricated segment and the knob part, and the second connecting part connects the knob part and the upper prefabricated segment. The first and second connecting parts are connected to the knob part in an inverted manner. Using the technical solution of this invention, it is applicable to various bridge constructions requiring rapid construction.

[0004] The connecting device has the following disadvantages in use: In use, it is fastened by two rings and then concrete is poured. Although it can be effectively fixed, the two rings and the poured concrete are rigidly connected. If vibration reduction is not carried out when the bridge vibrates, the pier is easily damaged and the seismic resistance is poor. Therefore, we propose a seismic-resistant precast segmental assembly pier connecting device to solve the above-mentioned problems. Summary of the Invention

[0005] In view of this, in order to solve the problem that the connection between existing prefabricated segmental bridge pier segments is a rigid connection, which makes the bridge piers easy to be damaged when the bridge vibrates and has poor seismic resistance if no damping treatment is carried out, the present invention provides a seismic-resistant prefabricated segmental bridge pier connection device.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a seismic-resistant precast segmental bridge pier connection device, comprising multiple precast piers, with upper and lower precast piers fixedly connected by a connecting seat, the top of the precast pier having a rectangular groove, the bottom of the precast pier having a stepped hole, the top of the connecting seat having a pin corresponding to the stepped hole, and the bottom of the connecting seat having a rectangular block fixedly connected to cooperate with the rectangular groove.

[0007] A connecting sleeve is fixedly connected to the outer wall of the connecting seat. A connecting ring is provided above the connecting seat. The connecting ring and the connecting sleeve are respectively fitted onto the upper and lower precast piers. Multiple first rotating seats are fixedly connected to the outer walls of the connecting sleeve and the connecting ring. The same elastic plate is rotatably connected between two corresponding upper and lower first rotating seats to further fix the upper and lower precast piers so that they can automatically reset when tilted.

[0008] The outer wall of the precast pier is provided with a second threaded hole corresponding to the rectangular groove and a first threaded hole corresponding to the stepped hole. The inner walls of the first threaded hole and the second threaded hole are threaded with a first bolt. The first bolt extends into the pin and the rectangular block and through the connecting sleeve, respectively, so as to facilitate disassembly and assembly.

[0009] The buffer mechanism, installed on the connecting seat, is used to buffer the precast pier above and increase the seismic resistance of the connection.

[0010] Furthermore, the buffer mechanism includes an oil tank fixedly fitted on the outer wall of the connecting seat. A sliding ring is slidably provided on the inner wall of the oil tank. The top and bottom of the sliding ring are elastically connected to the top inner wall and bottom inner wall of the oil tank respectively by a first spring. Multiple second rotating seats are fixedly connected to the top of the oil tank and the outer wall of the connecting ring. The same oil cylinder is rotatably connected between two corresponding upper and lower second rotating seats. The oil inlet of the oil cylinder extends to the top inner wall of the oil tank through a pipe, and the oil outlet of the oil cylinder extends to the bottom inner wall of the oil tank through a pipe.

[0011] Furthermore, the connector has multiple insertion holes on its top, with telescopic rods inserted into the inner walls of the insertion holes. The outer walls of the multiple telescopic rods are fitted with the same rubber pad, and the tops of the multiple telescopic rods are fitted with the same connecting piece. The bottom of the pin is fixedly connected to a fixing seat, and the outer wall of the fixing seat is fixedly fitted with an external threaded sleeve. The bottom of the external threaded sleeve is fixedly connected to a fixing ring, and the connecting piece is rotatably connected to the inner wall of the external threaded sleeve. The connecting piece is located between the fixing seat and the fixing ring, and the external threaded sleeve is threaded into the stepped hole.

[0012] Furthermore, a first rotating ring is rotatably connected to the top of the connecting seat. The top of the first rotating ring has a limiting hole corresponding to the telescopic rod. The first rotating ring is located between the connecting seat and the rubber pad.

[0013] Furthermore, the telescopic rod also includes a guide sleeve disposed in the insertion hole, a guide rod slidably disposed on the inner wall of the guide sleeve, a universal ball fixedly connected to the top of the guide rod, the universal ball being rotatably embedded in the connecting piece, and a tension spring disposed on the outer wall of the guide rod, the two ends of the tension spring being fixedly connected to the top inner wall of the guide sleeve and the outer wall of the guide rod, respectively.

[0014] Furthermore, a limiting ring that abuts against the connecting ring is fixedly fitted on the outer wall of the precast pier. Multiple inserts are fixedly connected to the bottom of the limiting ring, and slots corresponding to the inserts are opened on the top of the connecting ring.

[0015] Furthermore, two arc-shaped plates are fixedly connected to the outer wall of the connecting seat, and a clamping plate is provided on the inner wall of the arc-shaped plate. Multiple second springs are fixedly connected between the clamping plate and the arc-shaped plate.

[0016] Furthermore, the two curved plates are fixedly connected by nuts and a second bolt.

[0017] Furthermore, the limiting hole includes a through hole and an oblong hole, with the through hole corresponding to the guide sleeve and the oblong hole corresponding to the guide rod.

[0018] Furthermore, the elastic plate, the hydraulic cylinder, and the second bolt are misaligned.

[0019] The beneficial effects of this invention are as follows:

[0020] 1. The seismic-resistant precast segmental bridge pier connection device disclosed in this invention enables elastic connection between two precast piers through the setting of rubber pads and telescopic rods, allowing them to cope with external pressure in a timely manner and preventing breakage between the precast piers; the setting of hydraulic cylinders and oil tanks can buffer the precast piers when they tilt and increase the seismic strength between the precast piers; the addition of elastic plates can enable the precast piers to be reset in time after tilting, further increasing the buffering effect and seismic strength; the setting of pins and rectangular blocks facilitates the positioning and installation of the upper and lower precast piers, simplifying the installation method and improving installation efficiency.

[0021] 2. The earthquake-resistant precast segmental bridge pier connection device disclosed in this invention can reduce the tilt of the bridge pier by setting up a hydraulic cylinder and a hydraulic tank, making it more stable. The setting of telescopic rod and rubber pad can make a soft connection between the upper and lower precast piers, further increasing the buffering effect. Furthermore, the setting of elastic plate can make the precast pier automatically reset after tilting, increasing its earthquake resistance.

[0022] 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

[0023] 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:

[0024] Figure 1 This is a three-dimensional structural schematic diagram of a seismic-resistant prefabricated segmental bridge pier connection device according to the present invention;

[0025] Figure 2 For the present invention Figure 1Schematic diagram of the middle connector structure;

[0026] Figure 3 For the present invention Figure 1 Schematic diagram of the cross-sectional structure of the middle connecting seat;

[0027] Figure 4 For the present invention Figure 1 Schematic diagram of the partially exploded structure of the middle connecting seat;

[0028] Figure 5 For the present invention Figure 1 Schematic diagram of the cross-sectional structure of the telescopic rod;

[0029] Figure 6 For the present invention Figure 1 Schematic diagram of partial cross-sectional structure of precast pier;

[0030] Figure 7 For the present invention Figure 1 Schematic diagram of the middle plate structure;

[0031] Figure 8 For the present invention Figure 1 Schematic diagram of the first rotating ring structure;

[0032] Figure 9 For the present invention Figure 3 Enlarged view of a portion of point A in the middle.

[0033] Reference numerals: 1. Precast pier; 2. Connecting seat; 3. Oil tank; 4. Connecting sleeve; 5. First rotating seat; 6. Connecting ring; 7. Elastic plate; 8. Second rotating seat; 9. Oil cylinder; 10. First bolt; 11. Limiting ring; 12. Insert block; 13. Slot; 21. Insertion hole; 22. First rotating ring; 23. Limiting hole; 24. Rubber pad; 25. Telescopic rod; 251. Guide sleeve; 252. Guide rod; 253. Universal joint. 254. Ball; 26. Tension spring; 27. Connecting piece; 28. Retaining ring; 29. ​​External threaded sleeve; 30. Fixing seat; 31. Pin; 32. Arc plate; 33. Nut; 34. Second bolt; 35. Clamping plate; 36. Second spring; 37. Rectangular block; 38. Rectangular groove; 39. Stepped hole; 40. First threaded hole; 41. Second threaded hole; 42. Through hole; 43. Waist-shaped hole; 44. Sliding ring; 45. First spring. Detailed Implementation

[0034] 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.

[0035] 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.

[0036] 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.

[0037] like Figures 1-6 The prefabricated segmental bridge pier connection device shown includes multiple prefabricated piers 1. The upper and lower prefabricated piers 1 are fixedly connected by a connecting seat 2. The top of the prefabricated pier 1 is provided with a rectangular groove 37 and the bottom of the prefabricated pier 1 is provided with a stepped hole 38. The top of the connecting seat 2 is provided with a pin 30 corresponding to the stepped hole 38, and the bottom of the connecting seat 2 is fixedly connected with a rectangular block 36 that cooperates with the rectangular groove 37.

[0038] A connecting sleeve 4 is fixedly connected to the outer wall of the connecting seat 2. A connecting ring 6 is provided above the connecting seat 2. The connecting ring 6 and the connecting sleeve 4 are respectively fitted onto the upper and lower precast piers 1. Multiple first rotating seats 5 are fixedly connected to the outer walls of the connecting sleeve 4 and the connecting ring 6. The same elastic plate 7 is rotatably connected between the two corresponding upper and lower first rotating seats 5, which is used to further fix the upper and lower precast piers 1 so that they can automatically reset when tilted.

[0039] The outer wall of the precast pier 1 is provided with a second threaded hole 40 corresponding to the rectangular groove 37 and a first threaded hole 39 corresponding to the stepped hole 38. The inner walls of the first threaded hole 39 and the second threaded hole 40 are threaded with a first bolt 10. The first bolt 10 extends into the pin 30 and the rectangular block 36 and through the connecting sleeve 4, respectively, so as to facilitate disassembly and assembly.

[0040] The buffer mechanism is set on the connecting seat 2 to buffer the upper precast pier 1, increasing the seismic resistance of the connection. In the above technical solution, the upper and lower precast piers 1 can be fixedly connected together by the connecting seat 2, making it easy to install. The buffer mechanism can also buffer the upper precast pier 1. Finally, the elastic plate 7 can automatically reset it, thus improving the seismic resistance.

[0041] Reference Figures 1-3 The buffer mechanism includes an oil tank 3 fixedly sleeved on the outer wall of the connecting seat 2. A sliding ring 43 is slidably provided on the inner wall of the oil tank 3. The top and bottom of the sliding ring 43 are elastically connected to the top inner wall and bottom inner wall of the oil tank 3 respectively by a first spring 44. Multiple second rotating seats 8 are fixedly connected to the top of the oil tank 3 and the outer wall of the connecting ring 6. The same oil cylinder 9 is rotatably connected between two corresponding upper and lower second rotating seats 8. The oil inlet of the oil cylinder 9 extends to the top inner wall of the oil tank 3 through a pipe, and the oil outlet of the oil cylinder 9 extends to the bottom inner wall of the oil tank 3 through a pipe. In the above technical solution, the setting of the oil cylinder 9 can buffer the precast pier 1 when it is tilted. The setting of the arc plate 31 can make the oil pressure of the oil inlet and oil outlet of the multiple oil cylinders 9 the same, and also has an anti-vibration effect.

[0042] Reference Figures 3-9 Multiple insertion holes 21 are opened on the top of the connecting seat 2. Telescopic rods 25 are inserted into the inner wall of the insertion holes 21. The outer wall of the multiple telescopic rods 25 is fitted with the same rubber pad 24. The top of the multiple telescopic rods 25 is provided with the same connecting piece 26. The bottom of the pin 30 is fixedly connected to the fixing seat 29. The outer wall of the fixing seat 29 is fixedly fitted with an external threaded sleeve 28. The bottom of the external threaded sleeve 28 is fixedly connected to a fixing ring 27. The connecting piece 26 is rotatably connected to the inner wall of the external threaded sleeve 28. The connecting piece 26 is located between the fixing seat 29 and the fixing ring 27. The external threaded sleeve 28 is threadedly connected to the stepped hole 38. In the above technical solution, the setting of the rubber pad 24 can buffer the vibration between the two precast piers 1. The setting of multiple telescopic rods 25 can further increase the buffering effect.

[0043] Reference Figure 4The top of the connecting seat 2 is rotatably connected to a first rotating ring 22. The top of the first rotating ring 22 is provided with a limiting hole 23 corresponding to the telescopic rod 25. The first rotating ring 22 is located between the connecting seat 2 and the rubber pad 24. In the above technical solution, by rotating the first rotating ring 22, multiple telescopic rods 25 can be fixed in the connecting seat 2 so that they will not move up and down.

[0044] Reference Figure 5 The telescopic rod 25 also includes a guide sleeve 251 disposed in the insertion hole 21. A guide rod 252 is slidably disposed on the inner wall of the guide sleeve 251. A universal ball 253 is fixedly connected to the top of the guide rod 252. The universal ball 253 is rotatably embedded in the connecting piece 26. A tension spring 254 is sleeved on the outer wall of the guide rod 252. The two ends of the tension spring 254 are fixedly connected to the top inner wall of the guide sleeve 251 and the outer wall of the guide rod 252, respectively. In the above technical solution, the setting of the universal ball 253 allows the two precast piers 1 to tilt at a short distance, which facilitates the elimination of external factors and further increases the buffering effect.

[0045] Reference Figure 1 , Figure 2 and Figure 6 The outer wall of the precast pier 1 is fixedly fitted with a limiting ring 11 that abuts against the connecting ring 6. Multiple inserts 12 are fixedly connected to the bottom of the limiting ring 11. The top of the connecting ring 6 is provided with a slot 13 corresponding to the inserts 12. In the above technical solution, the connecting ring 6 can be positioned by setting the limiting ring 11 and the inserts 12, which facilitates positioning and installation.

[0046] Reference Figure 4 and Figure 7 Two arc-shaped plates 31 are fixedly connected to the outer wall of the connecting seat 2. The inner wall of the arc-shaped plate 31 is provided with a clamping plate 34. Multiple second springs 35 are fixedly connected between the clamping plate 34 and the arc-shaped plate 31. In the above technical solution, the setting of the clamping plate 34 can protect the rubber pad 24, so that it can be assisted in resetting after deformation, thereby increasing the use effect.

[0047] Reference Figure 4 and Figure 7 The two arc-shaped plates 31 are fixedly connected by nuts 32 and second bolts 33. In the above technical solution, the setting of nuts 32 and second bolts 33 makes it easy to install the arc-shaped plates 31 in a designated position, which is convenient for installation.

[0048] Reference Figure 4 , Figure 5 and Figure 8The limiting hole 23 includes a through hole 41 and an oblong hole 42. The through hole 41 corresponds to the guide sleeve 251, and the oblong hole 42 corresponds to the guide rod 252. In the above technical solution, the through hole 41 and the oblong hole 42 can be rotated by rotating the first rotating ring 22, so that the oblong hole 42 can limit the guide sleeve 251 on the outer wall of the guide rod 252.

[0049] Reference Figure 1 and Figure 2 The elastic plate 7, the hydraulic cylinder 9, and the second bolt 33 are misaligned with each other. The misalignment of the elastic plate 7, the hydraulic cylinder 9, and the second bolt 33 in the above technical solution facilitates its installation and maintenance.

[0050] When using the seismic-resistant precast segmental pier connection device, place the rectangular block 36 into the rectangular groove 37 of the lower precast pier 1, aligning the through hole 41 on the rectangular block 36 with the second threaded hole 40. Then, put the rubber pad 24 on the telescopic rod 25 and insert the telescopic rod 25 into the insertion hole 21. Rotate the first rotating ring 22 to limit the telescopic rod 25 with the waist-shaped hole 42. Place the other precast pier 1 into the connecting ring 6, making the limiting ring 11 abut against the connecting ring 6 and the insertion block 12 snap into the slot 13. Rotate the fixing ring 27, which drives the outer threaded sleeve 28 to rotate. The outer threaded sleeve 28 can be screwed into the stepped hole 38 at the bottom of the upper precast pier 1, aligning the through hole 41 on the pin 30 with the first threaded hole 39. Then, fix the upper and lower precast piers 1 to the rectangular groove 37 with the first bolt 10. On the block 36 and pin 30, the two arc plates 31 are finally clamped to the outer wall of the rubber pad 24 by the nut 32 and the second bolt 33. When the precast pier 1 tilts to the right, the precast pier 1 will press the rubber pad 24 and drive multiple guide rods 252 to rise and fall in sequence. When the rubber pad 24 deforms, it will squeeze the second spring 35 through the clamping plate 34. The precast pier 1 drives the right oil cylinder 9 to move downward through the connecting ring 6, and the hydraulic oil in the oil cylinder 9 flows into the lower space of the oil tank 3 through the pipeline. Correspondingly, the left oil cylinder 9 moves upward, and the hydraulic oil in the left oil cylinder 9 is squeezed into the upper space of the oil tank 3. The sliding ring 43 can keep the oil pressure in the lower space the same, so as to slow down the tilt. And the elastic plate 7 can make the tilted precast pier 1 automatically reset, increase the seismic effect, and facilitate installation.

[0051] 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 seismic-resistant precast segmental bridge pier connection device, comprising multiple precast piers (1), characterized in that, The two precast piers (1) are fixedly connected by a connecting seat (2). The top of the precast pier (1) is provided with a rectangular groove (37) and the bottom of the precast pier (1) is provided with a stepped hole (38). The top of the connecting seat (2) is provided with a pin (30) corresponding to the stepped hole (38). The bottom of the connecting seat (2) is fixedly connected with a rectangular block (36) that cooperates with the rectangular groove (37). The outer wall of the connecting seat (2) is fixedly connected with a connecting sleeve (4). The top of the connecting seat (2) is provided with a connecting ring (6). The connecting ring (6) and the connecting sleeve (4) are respectively fitted on the two precast piers (1). The outer walls of the connecting sleeve (4) and the connecting ring (6) are fixedly connected with multiple first rotating seats (5). The two corresponding first rotating seats (5) are rotatably connected with the same elastic plate (7) for further fixing the two precast piers (1) so that they can automatically reset when tilted. The outer wall of the precast pier (1) is provided with a second threaded hole (40) corresponding to the rectangular groove (37) and a first threaded hole (39) corresponding to the stepped hole (38). The inner walls of the first threaded hole (39) and the second threaded hole (40) are threaded with a first bolt (10). The first bolt (10) extends into the pin (30) and the rectangular block (36) and through the connecting sleeve (4) respectively, so as to facilitate disassembly and assembly. A buffer mechanism is installed on the connecting seat (2) to buffer the precast pier (1) above and increase the seismic resistance of the connection.

2. The seismic-resistant precast segmental bridge pier connection device according to claim 1, characterized in that, The buffer mechanism includes an oil tank (3) fixedly sleeved on the outer wall of the connecting seat (2). A sliding ring (43) is slidably provided on the inner wall of the oil tank (3). The top and bottom of the sliding ring (43) are elastically connected to the top inner wall and bottom inner wall of the oil tank (3) respectively by a first spring (44). Multiple second rotating seats (8) are fixedly connected to the top of the oil tank (3) and the outer wall of the connecting ring (6). The same oil cylinder (9) is rotatably connected between two corresponding upper and lower second rotating seats (8). The oil inlet of the oil cylinder (9) extends to the top inner wall of the oil tank (3) through a pipe. The oil outlet of the oil cylinder (9) extends to the bottom inner wall of the oil tank (3) through a pipe.

3. The seismic-resistant precast segmental bridge pier connection device according to claim 2, characterized in that, The connector (2) has multiple insertion holes (21) on its top. A telescopic rod (25) is inserted into the inner wall of the insertion hole (21). The outer wall of the multiple telescopic rods (25) is fitted with the same rubber pad (24). The top of the multiple telescopic rods (25) is provided with the same connecting piece (26). The bottom of the pin (30) is fixedly connected to a fixing seat (29). The outer wall of the fixing seat (29) is fixedly fitted with an external threaded sleeve (28). The bottom of the external threaded sleeve (28) is fixedly connected to a fixing ring (27). The connecting piece (26) is rotatably connected to the inner wall of the external threaded sleeve (28). The connecting piece (26) is located between the fixing seat (29) and the fixing ring (27). The external threaded sleeve (28) is threadedly connected to the stepped hole (38).

4. The seismic-resistant precast segmental bridge pier connection device according to claim 3, characterized in that, The top of the connecting seat (2) is rotatably connected to a first rotating ring (22), and the top of the first rotating ring (22) is provided with a limiting hole (23) corresponding to the telescopic rod (25). The first rotating ring (22) is located between the connecting seat (2) and the rubber pad (24).

5. The seismic-resistant precast segmental bridge pier connection device according to claim 3, characterized in that, The telescopic rod (25) also includes a guide sleeve (251) disposed in the insertion hole (21). A guide rod (252) is slidably disposed on the inner wall of the guide sleeve (251). A universal ball (253) is fixedly connected to the top of the guide rod (252). The universal ball (253) is rotatably embedded in the connecting piece (26). A tension spring (254) is sleeved on the outer wall of the guide rod (252). The two ends of the tension spring (254) are fixedly connected to the top inner wall of the guide sleeve (251) and the outer wall of the guide rod (252), respectively.

6. The seismic-resistant precast segmental bridge pier connection device according to claim 1, characterized in that, The outer wall of the precast pier (1) is fixedly fitted with a limiting ring (11) that abuts against the connecting ring (6). The bottom of the limiting ring (11) is fixedly connected with a plurality of inserts (12), and the top of the connecting ring (6) is provided with a slot (13) corresponding to the inserts (12).

7. The seismic-resistant precast segmental bridge pier connection device according to claim 3, characterized in that, Two arc-shaped plates (31) are fixedly connected to the outer wall of the connecting seat (2). The inner wall of the arc-shaped plate (31) is provided with a clamping plate (34). Multiple second springs (35) are fixedly connected between the clamping plate (34) and the arc-shaped plate (31).

8. The seismic-resistant precast segmental bridge pier connection device according to claim 7, characterized in that, The two arc-shaped plates (31) are fixedly connected by a nut (32) and a second bolt (33).

9. The seismic-resistant precast segmental bridge pier connection device according to claim 5, characterized in that, The limiting hole (23) includes a through hole (41) and an oblong hole (42). The through hole (41) corresponds to the guide sleeve (251), and the oblong hole (42) corresponds to the guide rod (252).

10. The seismic-resistant precast segmental bridge pier connection device according to claim 8, characterized in that, The elastic plate (7), the oil cylinder (9), and the second bolt (33) are misaligned with each other.

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