A prefabricated pipe pile bridge pier column cap connecting device

Abstract

The application relates to the technical field of rail transit construction, in particular to a prefabricated pipe pile bridge pier column pile cap connecting device; the device comprises a first pier column section, a second pier column section, a pile cap, a connecting assembly and an auxiliary assembly, the first pier column section and the second pier column section are fixedly connected through the connecting assembly and the pile cap, the connecting assembly is arranged in the pile cap, and a first grouting layer and a second grouting layer are arranged in the connecting assembly; the first grouting layer is provided with a plurality of first grouting areas, and the second grouting layer is provided with a plurality of second grouting areas; the auxiliary assembly is used for obtaining the offset condition of the second pier column section during assembly, and the grouting amount in each first grouting area and each second grouting area is judged according to the offset condition of the second pier column section obtained by the auxiliary assembly; the application strengthens the stability between the pier column sections and guarantees the quality of the bridge pier.

Description

Technical Field

[0001] This invention relates to the field of rail transit construction technology, and in particular to a precast pipe pile bridge pier cap connection device. Background Technology

[0002] Piers are the load-bearing structures in civil engineering that support the superstructure. They are an important component in bridges such as highway bridges, railway bridges, pedestrian bridges, overpasses, ramp bridges, and pedestrian bridges. As a crucial part of bridge construction, the appearance design and quality management of piers have a profound impact on the overall stability of the bridge.

[0003] Piers are typically formed by fixing multiple pier segments together. For example, prior art CN115233559A discloses a method for connecting precast piers using bonded prestressed tendons and reinforcing bars. This method includes: precast pipe piles, a foundation, and a precast pier formed by splicing at least two pier segments in sequence. Prestressed steel strands pass through the precast pier and are anchored inside the foundation. The prestressed steel strands form a bonded structure with the precast pier and foundation through grouting material. The connection between the pier segments is fixed by shear key structure, second reinforcing bars, and steel strands.

[0004] However, the connection between the two pier segments connected by the above method is not very stable and is prone to bending, which can lead to the destruction of the pier.

[0005] Therefore, there is an urgent need to provide a precast pipe pile bridge pier cap connection device that, compared with existing technologies, enhances the stability between pier segments and ensures the quality of the bridge pier. Summary of the Invention

[0006] This invention addresses the technical problems existing in the prior art and provides a precast pipe pile bridge pier cap connection device.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] A precast pipe pile bridge pier cap connection device includes a first pier segment, a second pier segment, a cap, a connecting component, and auxiliary components. The first pier segment and the second pier segment are fixedly connected to the cap via the connecting component. The connecting component is disposed inside the cap. The connecting component includes a first fixing plate, a second fixing plate, a first partition plate, and a second partition plate. The first fixing plate is sleeved on the outside of the second pier segment, and the second fixing plate is sleeved on the outside of the first pier segment. The upper ends of the first partition plate and the second partition plate are connected to the first fixing plate, and the lower ends of both the first partition plate and the second partition plate are connected to the second fixing plate. The second partition plate is sleeved on the outside of the first partition plate. A first grouting layer is provided between the first partition plate and the first pier segment and the second pier segment, and a second grouting layer is provided between the first partition plate and the second partition plate. The first grouting layer has multiple first grouting zones, and the second grouting layer has multiple second grouting zones.

[0009] The auxiliary component is used to obtain the offset of the second pier segment during assembly, and to determine the grouting volume in each first grouting zone and each second grouting zone based on the offset of the second pier segment obtained by the auxiliary component.

[0010] Furthermore, the auxiliary components include a first support frame, a second support frame, and a lifting platform. Both the first support frame and the second support frame are U-shaped, and multiple lifting platforms are arranged between the first support frame and the second support frame. Both the first pier segment and the second pier segment are located inside the first support frame and the second support frame.

[0011] The second support frame is internally slidably connected to the first detection component and the second detection component, with the first detection component and the second detection component being arranged opposite to each other; the first detection component and the second detection component are arranged to clamp the second pier segment, and the first detection component and the second detection component are used to detect the pressure values ​​at multiple different positions on the side wall of the second pier segment, and to determine the displacement of the second pier segment based on the measured pressure values.

[0012] Furthermore, the first detection component includes a sliding block, a fixed block, an electric push rod, a telescopic rod, a spring, a contact plate, and a pressure sensor. The sliding block is slidably connected inside the second support frame and extends out of the second support frame. The end face of the sliding block outside the second support frame is a semi-circular arc surface. Multiple fixed blocks are spaced circumferentially along the semi-circular arc surface of the sliding block. The fixed blocks are embedded inside the sliding block. The outer end face of the fixed block is fixedly connected to the electric push rod and multiple telescopic rods. The electric push rod is located within the space enclosed by the multiple telescopic rods. The end of the telescopic rod away from the fixed block is connected to the contact plate. The outer end face of the contact plate is an arc surface. The spring is sleeved on the outside of the telescopic rod. One end of the spring is fixedly connected to the fixed block, and the other end of the spring is fixedly connected to the contact block.

[0013] Furthermore, the method for determining the offset of the second pier segment is as follows:

[0014] S1. Multiple pressure value detection positions are set along the circumference of the second pier segment. The first detection component and the second detection component acquire the pressure value of the second pier segment at each pressure value detection position, denoted as P = {P1, P2, ..., P...} I}, where P represents the set of pressure values ​​at each pressure detection location on the sidewall of the second pier segment, P1 represents the pressure value at the first pressure detection location on the sidewall of the second pier segment, P2 represents the pressure value at the second pressure detection location on the sidewall of the second pier segment, P I This indicates the pressure value at the I-th pressure value detection location on the side wall of the second pier segment, where I represents the total number of pressure value detection locations on the side wall of the second pier segment.

[0015] S2. Sort the pressure values ​​in P from largest to smallest to obtain P. ′ ={P1′,P2′,…,P I ′}, where P ′ This represents the set of pressure values ​​at each pressure detection location on the sidewall of the second pier segment after sorting. P1′ represents the pressure value at the first pressure detection location on the sidewall of the second pier segment after sorting, and P2′ represents the pressure value at the second pressure detection location on the sidewall of the second pier segment after sorting. I ′ represents the pressure value detected at the I-th pressure value detection location on the sidewall of the second pier segment after sorting;

[0016] S3. Obtain the offset position, specifically:

[0017] When |P1′-P2′|≤P0, the position between the pressure value detection positions of the two second pier segments corresponding to P1′ and P2′ is set as the offset position;

[0018] When |P1′-P2′|>P0, the pressure value detection position of the second pier segment corresponding to P1′ is set to the offset position;

[0019] Where P0 represents the pressure threshold.

[0020] Furthermore, the pressure detection positions of the first grouting zone and the sidewall of the second pier segment are set one-to-one, and the grouting volume of each first grouting zone is determined according to the offset position, specifically:

[0021] (1) When the offset position is between the pressure value detection positions of the two second pier segments corresponding to P1′ and P2′, the first grouting area corresponding to P1′ and P2′ is set as the first grouting volume area, denoted as Q1. The two adjacent first grouting areas corresponding to P1′ and P2′ are set as the second grouting volume areas, denoted as Q2, and so on, to obtain Q1. in Indicates the first Grouting volume area;

[0022] The grouting volume for the first grouting zone is calculated using the following formula:

[0023]

[0024] Where Q1 represents the grouting volume of the first grouting volume zone, and Q0 represents the grouting volume setting value;

[0025] Set the first The grouting volume in the grouting volume zone is the set value for the grouting volume;

[0026] Based on the grouting volume of the first grouting zone and the... The grouting volume in the grouting zone is set to decrease sequentially.

[0027] (2) When the offset position is the pressure value detection position of the second pier segment corresponding to P1′, the first grouting area corresponding to P1′ is set as the first grouting volume area, the two first grouting areas connected to the first grouting area corresponding to P1′ are set as the second grouting volume areas, and so on, to obtain Q1. in Indicates the first Grouting volume area;

[0028] The grouting volume for the first grouting zone is calculated using the following formula:

[0029]

[0030] Wherein, Q1 represents the grouting volume of the first grouting volume zone;

[0031] Set the first The grouting volume in the grouting volume zone is the set value for the grouting volume;

[0032] Based on the grouting volume of the first grouting zone and the... The grouting volume in the grouting zone is set to decrease sequentially.

[0033] Furthermore, the pressure measurement positions of the second grouting zone and the sidewall of the second pier segment are set one-to-one. The grouting volume of each second grouting zone is determined according to the offset position, specifically:

[0034] (1) When the offset position is between the pressure value detection positions of the two second pier segments corresponding to P1′ and P2′,

[0035] The grouting volume of the second grouting zone corresponding to the first grouting zone is calculated using the following formula:

[0036]

[0037] With the The grouting volume of the second grouting zone corresponding to the grouting volume zone is calculated using the following formula:

[0038]

[0039] Where Q1′ represents the grouting volume of the second grouting zone corresponding to the first grouting volume zone, and Q0′ represents the grouting volume of the second grouting zone corresponding to the first grouting volume zone. Grouting volume corresponding to the second grouting zone in the grouting volume zone;

[0040] Based on the grouting volume of the second grouting zone corresponding to the first grouting zone and the grouting volume of the first grouting zone... The grouting volume of the second grouting zone corresponding to the grouting volume zone is set to increase sequentially. The corresponding grouting volume for the second grouting zone;

[0041] (2) When the offset position is the pressure value detection position of the second pier segment corresponding to P1′:

[0042] The grouting volume of the second grouting zone corresponding to the first grouting zone is calculated using the following formula:

[0043]

[0044] With the The grouting volume of the second grouting zone corresponding to the grouting volume zone is calculated using the following formula:

[0045]

[0046] Based on the grouting volume of the second grouting zone corresponding to the first grouting zone and the grouting volume of the first grouting zone... The grouting volume of the second grouting zone corresponding to the grouting volume zone is set to increase sequentially. The corresponding grouting volume for the second grouting zone.

[0047] Furthermore, the second support frame is provided with two cylinders on its exterior. The two cylinders are respectively configured to correspond to the first detection component and the second detection component. The first detection component and the second detection component are slidably connected inside the second support frame through the cylinders.

[0048] Furthermore, the cylinder corresponding to the offset position extends and moves at a set speed. During the movement of the cylinder, the pressure values ​​at multiple pressure detection positions on the second pier segment are acquired in real time. When the absolute value of the difference between the pressure values ​​at any two pressure detection positions is less than or equal to the pressure threshold, the movement of the cylinder is stopped.

[0049] Furthermore, a mixture of crushed stone and concrete grout is injected into the first grouting layer.

[0050] Furthermore, fiber-reinforced fine sand concrete is injected into the second grouting layer.

[0051] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0052] This invention obtains the offset of the second pier segment relative to the first pier segment by measuring the pressure values ​​at different positions on the outer circumference of the second pier segment during the installation of the first and second pier segments. Based on the offset, the grouting volume of each first and second grouting zone is determined. For different offset situations, the grouting volume of each first and second grouting zone is set differently. By adjusting the grouting volume of the first and second grouting zones, the reinforcement force of the connecting components on the pier segments can be specifically enhanced, thereby strengthening the stability between the pier segments and ensuring the quality of the bridge pier. Attached Figure Description

[0053] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0054] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0055] Figure 3 yes Figure 2 Enlarged view of point B in the middle.

[0056] Figure 4 This is the main view of the auxiliary component of the present invention.

[0057] Figure 5 This is a cross-sectional view showing the internal structure of the second support frame according to the present invention.

[0058] Figure 6 yes Figure 5 A magnified view of point C in the middle.

[0059] Explanation of reference numerals in the attached figures:

[0060] 1. First pier segment; 2. Second pier segment; 3. Pier cap; 4. Connecting assembly; 41. First fixing plate; 42. Placement groove; 43. Rubber pad; 44. First partition plate; 45. First grouting layer; 46. Second partition plate; 47. Second fixing plate; 48. Second grouting layer; 5. Auxiliary assembly; 51. First support frame; 52. Second support frame; 521. Sliding groove; 53. Lifting machine; 54. First detection assembly; 541. Cylinder; 542. Fixing block; 543. Electric push rod; 544. Telescopic rod; 545. Spring; 546. Contact plate; 547. Pressure sensor; 548. Positioning groove; 549. Sliding block; 55. Second detection assembly; 6. Connecting column; 7. Guide groove. Detailed Implementation

[0061] The technical solution of the present invention will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are not all embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention. It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description. They 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, and therefore should not be construed as a limitation of the present invention.

[0062] like Figure 1 , Figure 2 As shown, the present invention provides a precast pipe pile bridge pier-cap connection device, including a first pier segment 1, a second pier segment 2, a cap 3, a connecting component 4, and an auxiliary component 5. The first pier segment 1 and the second pier segment 2 are fixedly connected to the cap 3 via the connecting component 4. The connecting component 4 is disposed inside the cap 3 and includes a first fixing plate 41, a second fixing plate 47, a first partition plate 44, and a second partition plate 46. The first fixing plate 41 is sleeved on the outside of the second pier segment 2, and the second fixing plate 47 is disposed on the outside of the second pier segment 2. Plate 47 is fitted outside the first pier segment 1. The upper ends of the first partition plate 44 and the second partition plate 46 are connected to the first fixing plate 41, and the lower ends are connected to the second fixing plate 47. The second partition plate 46 is fitted outside the first partition plate 44. The first partition plate 44 is fitted outside the connection between the first pier segment 1 and the second pier segment 2. A first grouting layer 45 is provided between the first partition plate 44 and the first pier segment 1 and the second pier segment 2. A second grouting layer 48 is provided between the first partition plate 44 and the second partition plate 46.

[0063] The upper end face of the first pier segment 1 is provided with multiple guide grooves 7, and the lower end face of the second pier segment 2 is also provided with multiple guide grooves 7. The guide grooves 7 provided in the first pier segment 1 and the guide grooves 7 provided in the second pier segment 2 are arranged one-to-one. A connecting column 6 is inserted into each corresponding guide groove 7 of the first pier segment 1 and the guide groove 7 of the second pier segment 2. The connecting column 6 is cast and fixedly connected to the guide groove 7. The setting of the connecting column 6 plays a guiding and fixing role in the connection between the first pier segment 1 and the second pier segment 2.

[0064] like Figure 3 As shown, the lower wall of the first fixing plate 41 is provided with a placement groove 42, which is annular. The upper end of the first partition plate 44 extends into the placement groove 42. A rubber pad 43 is attached to the inner wall of the placement groove 42, and the side wall of the first partition plate 44 is in contact with the rubber pad 43.

[0065] The first grouting layer 45 is provided with multiple first grouting zones, and the second grouting layer 48 is provided with multiple second grouting zones; the auxiliary component 5 is used to obtain the offset of the second pier segment 2 during assembly, and to determine the grouting volume in each first grouting zone and each second grouting zone based on the offset of the second pier segment 2 obtained by the auxiliary component 5; a mixture of crushed stone and concrete is injected into the first grouting layer 45; and fiber-reinforced fine sand concrete is injected into the second grouting layer 48.

[0066] like Figure 4 , Figure 5 , Figure 6 As shown, the auxiliary component 5 includes a first support frame 51, a second support frame 52, and a lifting mechanism 53. Both the first support frame 51 and the second support frame 52 are U-shaped. Multiple lifting mechanisms 53 are arranged between the first support frame 51 and the second support frame 52. The first pier segment 1 and the second pier segment 2 are both located inside the first support frame 51 and the second support frame 52. A first detection component 54 and a second detection component 55 are slidably connected inside the second support frame 52, with the first detection component 54 and the second detection component 55 arranged opposite to each other. The first detection component 54 and the second detection component 55 are used to clamp the second pier segment 2 and detect the pressure values ​​at multiple different locations on the sidewall of the second pier segment 2. The displacement of the second pier segment 2 is determined based on the measured pressure values.

[0067] Cylinders 541 are fixedly connected to the opposite outer walls of the second support frame 52. The output end of each cylinder 541 passes through the side wall of the second support frame 52. The output end of one cylinder 541 passes through the second support frame 52 and is fixedly connected to the first detection component 54, pushing the first detection component 54 to slide inside the second support frame 52. The output end of the other cylinder 541 passes through the second support frame 52 and is fixedly connected to the second detection component 55, pushing the second detection component 55 to slide inside the second support frame 52. The structure of the first detection component 54 and the position of the second detection component 55 are arranged opposite to each other, but the specific structure is the same.

[0068] The first detection component 54 includes a sliding block 549, a fixed block 542, an electric push rod 543, a telescopic rod 544, a spring 545, a contact plate 546, and a pressure sensor 547. The sliding block 549 is slidably connected inside the second support frame 52 and extends out of the second support frame 52. The end face of the sliding block 549 outside the second support frame 52 is a semi-circular arc surface. Multiple fixed blocks 542 are spaced circumferentially along the semi-circular arc surface of the sliding block 549. The fixed blocks 542 are embedded inside the sliding block 549. The outer end face of the fixed block 542 is fixedly connected to the electric push rod 543 and multiple telescopic rods 544. The multiple telescopic rods 544 are arranged around the electric push rod 543. The ends of the telescopic rods 544 away from the fixed blocks 542 are in contact with the contact plate 547. The contact plate 546 is connected, and the outer end face of the contact plate 546 is an arc surface. A spring 545 is sleeved on the outside of the telescopic rod 544. One end of the spring 545 is fixedly connected to the fixing block 542, and the other end of the spring 545 is fixedly connected to the contact plate 546. The telescopic rod 544 includes a first rod and a second rod sleeved on it. One end of the second rod extends into the interior of the first rod and will not slide out from the interior of the first rod. The other end of the second rod is fixedly connected to the contact plate 546. The end of the first rod away from the second rod is fixedly connected to the fixing block 542 (the structure of the telescopic rod 544 is prior art and is not shown in the attached drawings). A pressure sensor 547 is embedded in the end face of the contact plate 546 away from the telescopic rod 544. The pressure sensor 547 is located at the most concave part of the end face of the contact plate 546.

[0069] The contact plate 546 is provided with a positioning groove 548 on the end face near the telescopic rod 544. The positioning groove 548 is correspondingly set with the telescopic end of the electric push rod 543. After the electric push rod 543 extends out, it extends into the positioning groove 548 and then pushes the contact plate 546 to move closer to the second pier column segment 2.

[0070] The method for determining the offset of the second pier segment 2 is as follows:

[0071] S1. The second pier segment 2 has multiple pressure detection positions along its circumference. Each pressure detection position is equipped with a pressure sensor 547 to measure the pressure value. First, two cylinders 541 are controlled to extend by the same distance. When the reading of one pressure sensor 547 is not zero, the movement of the two cylinders 541 is stopped. Then, all the electric push rods 543 inside the first detection component 54 and all the electric push rods 543 inside the second detection component 55 are controlled to extend by the same distance. When the readings of all pressure sensors 547 are not zero, the movement of all electric push rods 543 is stopped. The pressure value of the second pier segment 2 at each pressure detection position is obtained at this time and denoted as P = {P1, P2, ..., P...} I}, where P represents the set of pressure values ​​at each pressure value detection position on the side wall of the second pier segment 2, P1 represents the pressure value at the first pressure value detection position on the side wall of the second pier segment 2, P2 represents the pressure value at the second pressure value detection position on the side wall of the second pier segment 2, P I This indicates the pressure value at the I-th pressure value detection location on the second pier segment 2 sidewall, where I represents the total number of pressure value detection locations on the second pier segment 2 sidewall.

[0072] S2. Sort the pressure values ​​in P from largest to smallest to obtain P. ′ ={P1′,P2′,…,P I ′}, where P ′ This represents the set of pressure values ​​at each pressure value detection location on the second pier segment 2 sidewall after sorting. P1′ represents the pressure value at the first pressure value detection location on the second pier segment 2 sidewall after sorting. P2′ represents the pressure value at the second pressure value detection location on the second pier segment 2 sidewall after sorting. I ′ represents the pressure value detected at the I-th pressure value detection position on the side wall of the second pier segment after sorting.

[0073] S3. Obtain the offset position, specifically:

[0074] When |P1′-P2′|≤P0, the position between the pressure value detection positions of the two second pier segments 2 corresponding to P1′ and P2′ is set as the offset position.

[0075] When |P1′-P2′|>P0, the pressure value detection position of the second pier segment 2 corresponding to P1′ is set to the offset position.

[0076] Where P0 represents the pressure threshold.

[0077] The pressure detection positions of the first grouting zone and the side wall of the second pier segment are set one-to-one. The grouting volume of each first grouting zone is determined according to the offset position, specifically:

[0078] (1) When the offset position is between the pressure value detection positions of the two second pier segments 2 corresponding to P1′ and P2′, the first grouting area corresponding to P1′ and P2′ is set as the first grouting volume area, denoted as Q1. The two adjacent first grouting areas corresponding to P1′ and P2′ are set as the second grouting volume areas, denoted as Q2, and so on, to obtain Q1. in Indicates the first Grouting volume area.

[0079] The grouting volume for the first grouting zone is calculated using the following formula:

[0080]

[0081] Where Q1 represents the grouting volume of the first grouting volume zone, and Q0 represents the grouting volume setting value.

[0082] Set the first The grouting volume in the grouting volume zone is the set value for the grouting volume.

[0083] Based on the grouting volume of the first grouting zone and the... The grouting volume in the grouting zone is set to decrease sequentially.

[0084] (2) When the offset position is the pressure value detection position of the second pier segment 2 corresponding to P1′, the first grouting area corresponding to P1′ is set as the first grouting volume area, the two first grouting areas connected to the first grouting area corresponding to P1′ are set as the second grouting volume areas, and so on, to obtain Q1. in Indicates the first Grouting volume area.

[0085] The grouting volume for the first grouting zone is calculated using the following formula:

[0086]

[0087] Q1 represents the grouting volume of the first grouting volume zone.

[0088] Set the first The grouting volume in the grouting volume zone is the set value for the grouting volume.

[0089] Based on the grouting volume of the first grouting zone and the... The grouting volume in the grouting zone is set to decrease sequentially.

[0090] The pressure measurement positions of the second grouting zone and the second pier column segment 2 are set one-to-one. The grouting volume of each second grouting zone is determined according to the offset position, specifically:

[0091] (1) When the offset position is between the pressure value detection positions of the two second pier segments 2 corresponding to P1′ and P2′,

[0092] The grouting volume of the second grouting zone corresponding to the first grouting zone is calculated using the following formula:

[0093]

[0094] With the The grouting volume of the second grouting zone corresponding to the grouting volume zone is calculated using the following formula:

[0095]

[0096] Where Q1′ represents the grouting volume of the second grouting zone corresponding to the first grouting volume zone, and Q0′ represents the grouting volume of the second grouting zone corresponding to the first grouting volume zone. Grouting volume corresponding to the second grouting zone.

[0097] Based on the grouting volume of the second grouting zone corresponding to the first grouting zone and the grouting volume of the first grouting zone... The grouting volume of the second grouting zone corresponding to the grouting volume zone is set to increase sequentially. The corresponding grouting volume for the second grouting zone.

[0098] (2) When the offset position is the pressure value detection position of the second pier segment 2 corresponding to P1′:

[0099] The grouting volume of the second grouting zone corresponding to the first grouting zone is calculated using the following formula:

[0100]

[0101] With the The grouting volume of the second grouting zone corresponding to the grouting volume zone is calculated using the following formula:

[0102]

[0103] Based on the grouting volume of the second grouting zone corresponding to the first grouting zone and the grouting volume of the first grouting zone... The grouting volume of the second grouting zone corresponding to the grouting volume zone is set to increase sequentially. The corresponding grouting volume for the second grouting zone.

[0104] After obtaining the offset position, control cylinder 541 to move, control cylinder 541 corresponding to the offset position to extend, cylinder 541 moves at a set speed, during the movement of cylinder 541, the pressure value of multiple pressure value detection positions on the second pier segment 2 is obtained in real time, when the absolute value of the pressure value difference between any two pressure value detection positions is less than or equal to the pressure threshold, the movement of cylinder 541 is stopped.

[0105] This invention obtains the offset of the second pier segment 2 relative to the first pier segment 1 by measuring the pressure values ​​at different positions on the outer circumference of the second pier segment 2 during the installation process of the first pier segment 1 and the second pier segment 2. Based on the offset, the grouting volume of each first grouting zone and each second grouting zone is determined. For different offset situations, the grouting volume of each first grouting zone and each second grouting zone is set differently. By adjusting the grouting volume of the first grouting zone and the second grouting zone, the reinforcement force of the connecting component 4 on the pier segment can be specifically enhanced, thereby strengthening the stability between the pier segments and ensuring the quality of the bridge pier.

[0106] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, and is not intended to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention do not depart from the essence and scope of the technical solution of the present invention.

Claims

1. A precast pipe pile bridge pier cap connection device, characterized in that, The system includes a first pier segment, a second pier segment, a pier cap, a connecting assembly, and auxiliary components. The first pier segment and the second pier segment are fixedly connected to the pier cap via the connecting assembly. The connecting assembly is disposed inside the pier cap and includes a first fixing plate, a second fixing plate, a first partition plate, and a second partition plate. The first fixing plate is sleeved on the outside of the second pier segment, and the second fixing plate is sleeved on the outside of the first pier segment. The upper ends of both the first and second partition plates are connected to the first fixing plate, and the lower ends of both are connected to the second fixing plate. The second partition plate is sleeved on the outside of the first partition plate. A first grouting layer is provided between the first partition plate and the first and second pier segments, and a second grouting layer is provided between the first partition plate and the second partition plate. The first grouting layer has multiple first grouting zones, and the second grouting layer has multiple second grouting zones. The auxiliary component is used to obtain the offset of the second pier segment during assembly, and to determine the grouting volume in each first grouting zone and each second grouting zone based on the offset of the second pier segment obtained by the auxiliary component. The auxiliary components include a first support frame, a second support frame, and a lifting mechanism. Both the first and second support frames are U-shaped. Multiple lifting mechanisms are arranged between the first and second support frames. Both the first and second pier segments are located inside the first and second support frames. The second support frame is internally slidably connected to the first detection component and the second detection component, with the first detection component and the second detection component being arranged opposite to each other; the first detection component and the second detection component are arranged to clamp the second pier segment, and the first detection component and the second detection component are used to detect the pressure values ​​at multiple different positions on the side wall of the second pier segment, and to determine the displacement of the second pier segment based on the measured pressure values; The first detection component includes a sliding block, a fixed block, an electric push rod, a telescopic rod, a spring, a contact plate, and a pressure sensor. The sliding block is slidably connected inside the second support frame and extends out of the second support frame. The end face of the sliding block outside the second support frame is a semi-circular arc surface. Multiple fixed blocks are spaced circumferentially along the semi-circular arc surface of the sliding block. The fixed blocks are embedded inside the sliding block. The outer end face of the fixed block is fixedly connected to the electric push rod and multiple telescopic rods. The electric push rod is located within the space enclosed by the multiple telescopic rods. The end of the telescopic rod away from the fixed block is connected to the contact plate. The outer end face of the contact plate is an arc surface. The spring is sleeved on the outside of the telescopic rod. One end of the spring is fixedly connected to the fixed block, and the other end of the spring is fixedly connected to the contact plate.

2. The precast pipe pile bridge pier cap connection device according to claim 1, characterized in that, The method for determining the offset of the second pier segment is as follows: S1. The second pier segment has multiple pressure value detection positions along its circumference. The first detection component and the second detection component acquire the pressure value of the second pier segment at each pressure value detection position, denoted as... ,in, This represents the set of pressure values ​​detected at various pressure points on the sidewall of the second pier segment. This indicates the pressure value detected at the first pressure value detection location on the side wall of the second pier segment. This indicates the pressure value detected at the second pressure value detection location on the side wall of the second pier segment. This indicates the pressure value at the I-th pressure value detection location on the side wall of the second pier segment, where I represents the total number of pressure value detection locations on the side wall of the second pier segment. S2, to The pressure values ​​are sorted from largest to smallest to obtain... ,in This represents the set of pressure values ​​detected at various pressure value detection locations on the sidewall of the second pier segment after sorting. This indicates the pressure value detected at the first pressure value detection location on the sidewall of the second pier segment after sorting. This indicates the pressure value detected at the second pressure value detection location on the side wall of the second pier segment after sorting. This indicates the pressure value detected at the I-th pressure value detection location on the sidewall of the second pier segment after sorting. S3. Obtain the offset position, specifically: when When, set , The position between the pressure value detection locations of the two corresponding second pier segments is the offset position; when When, set The corresponding pressure value detection location for the second pier segment is the offset position; in, This indicates the pressure threshold.

3. The precast pipe pile bridge pier cap connection device according to claim 2, characterized in that, The pressure detection positions of the first grouting zone and the sidewall of the second pier segment are set one-to-one. The grouting volume of each first grouting zone is determined according to the offset position, specifically: (1) When the offset position is , When setting the position between the pressure value detection locations of the corresponding two second pier segments, , The corresponding first grouting zone is the first grouting volume zone, denoted as... , , The two adjacent first grouting zones corresponding to the first grouting zone are the second grouting zone, denoted as . And so on, we get ,in Indicates the first Grouting volume area; The grouting volume for the first grouting zone is calculated using the following formula: ； in, This indicates the grouting volume for the first grouting zone. This indicates the grouting volume setting value; Set the first The grouting volume in the grouting volume zone is the set value for the grouting volume; Based on the grouting volume of the first grouting zone and the... The grouting volume in the grouting zone is set to decrease sequentially. ; (2) When the offset position is When detecting the pressure value of the corresponding second pier segment, set The corresponding first grouting zone is the first grouting volume zone. The two first grouting zones connected to the corresponding first grouting zone are the second grouting zone, and so on, to obtain... ,in Indicates the first Grouting volume area; The grouting volume for the first grouting zone is calculated using the following formula: ； in, This indicates the grouting volume for the first grouting zone; Set the first The grouting volume in the grouting volume zone is the set value for the grouting volume; Based on the grouting volume of the first grouting zone and the... The grouting volume in the grouting zone is set to decrease sequentially. .

4. The precast pipe pile bridge pier cap connection device according to claim 3, characterized in that, The pressure measurement positions of the second grouting zone and the sidewall of the second pier segment are set one-to-one. The grouting volume of each second grouting zone is determined according to the offset position, specifically: (1) When the offset position is , When the pressure value detection positions of the two corresponding second pier segments are located, The grouting volume of the second grouting zone corresponding to the first grouting zone is calculated using the following formula: ； With the The grouting volume of the second grouting zone corresponding to the grouting volume zone is calculated using the following formula: ； in, This indicates the grouting volume of the second grouting zone corresponding to the first grouting volume zone. Indicates the relationship with the first Grouting volume corresponding to the second grouting zone in the grouting volume zone; Based on the grouting volume of the second grouting zone corresponding to the first grouting zone and the grouting volume of the first grouting zone... The grouting volume of the second grouting zone corresponding to the grouting volume zone is set to increase sequentially. The corresponding grouting volume for the second grouting zone; (2) When the offset position is When detecting the pressure value of the corresponding second pier segment: The grouting volume of the second grouting zone corresponding to the first grouting zone is calculated using the following formula: ； With the The grouting volume of the second grouting zone corresponding to the grouting volume zone is calculated using the following formula: ； Based on the grouting volume of the second grouting zone corresponding to the first grouting zone and the grouting volume of the first grouting zone... The grouting volume of the second grouting zone corresponding to the grouting volume zone is set to increase sequentially. The corresponding grouting volume for the second grouting zone.

5. A precast pipe pile bridge pier cap connection device according to claim 2, characterized in that, The second support frame is provided with two cylinders on its exterior. The two cylinders are respectively configured to correspond to the first detection component and the second detection component. The first detection component and the second detection component are slidably connected inside the second support frame through the cylinders.

6. A precast pipe pile bridge pier cap connection device according to claim 5, characterized in that, The cylinder corresponding to the offset position extends and moves at a set speed. During the movement of the cylinder, the pressure values ​​at multiple pressure detection positions on the second pier segment are acquired in real time. When the absolute value of the difference between the pressure values ​​at any two pressure detection positions is less than or equal to the pressure threshold, the movement of the cylinder stops.

7. A precast pipe pile bridge pier cap connection device according to claim 1, characterized in that, The first grouting layer is filled with a mixture of crushed stone and concrete grout.

8. A precast pipe pile bridge pier cap connection device according to claim 1, characterized in that, Fiber-reinforced fine sand concrete is injected into the second grouting layer.

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