Bridge multi-point support adaptive swivel system and construction method thereof

Abstract

The application is suitable for the field of bridge construction technology, and particularly relates to a bridge multi-point support adaptive swivel system and a construction method thereof, comprising a ring track foundation and a bridge pier above the ring track foundation, a ring track is arranged on the ring track foundation, a gear ring is arranged on the outer side of the ring track, and the gear ring is fixedly arranged relative to the ring track foundation; a plurality of wheel frame assemblies are arranged at the bottom of the bridge pier in a circumferential direction at intervals. The cooperation of the ring track foundation, the multi-point wheel frame assembly, the vertical load bearing wheel, the radial limiting wheel and the gear ring driving assembly enables the bridge pier to stably rotate along the fixed ring track in a multi-point support state, disperses the vertical load and reduces the local stress concentration; the suspension oil cylinder can adjust the pressure of each support point, the sensor and the controller are cooperated to correct the swivel posture in real time, the deviation and the shaking are reduced, the swivel precision, the safety, the construction efficiency and the adaptability to different bridge working conditions are improved.

Description

Technical Field

[0001] This invention relates to the field of bridge construction technology, specifically to a bridge multi-point support adaptive rotation system and its construction method. Background Technology

[0002] Bridge rotation construction is a common method used when crossing existing roads, railways, rivers, and complex obstacles. It typically involves completing the main bridge structure in a non-designed position, then using a rotation device to rotate the bridge to the designed alignment. Most existing bridge rotation systems employ a central ball-joint structure, where a ball-joint is placed at the bottom of the pier as the main load-bearing and rotating component, in conjunction with a traction device, ring support, or temporary restraint structure to achieve bridge rotation.

[0003] However, the central ball-joint rotating structure still has certain shortcomings in practical applications. Since the bridge load is mainly concentrated at the ball-joint location, the ball-joint not only needs high load-bearing capacity but also high processing and installation precision, resulting in high manufacturing and construction costs. Especially in the construction of large-tonnage or wide-span bridges, the size and load-bearing requirements of the ball-joint further increase, making it susceptible to limitations imposed by processing, transportation, and installation conditions.

[0004] Furthermore, traditional bridge rotation methods are susceptible to factors such as eccentric loading, changes in frictional resistance, and asynchronous driving during rotation, leading to swaying, displacement, or instability of the bridge structure. After the bridge structure is rotated into position, secondary fixation with wedges, bolts, or other locking structures is usually required, making the construction process cumbersome. Therefore, it is necessary to provide a bridge rotation system and construction method that can distribute the bridge load, improve rotation stability, and facilitate locking after rotation. Summary of the Invention

[0005] The purpose of this invention is to provide a bridge multi-point support adaptive rotation system and its construction method, aiming to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A bridge multi-point support adaptive rotation system includes a ring track foundation and a bridge pier located above the ring track foundation. A ring track is provided on the ring track foundation, and a toothed ring is provided on the outer side of the ring track. The toothed ring is fixedly set relative to the ring track foundation.

[0008] The bottom of the bridge pier is provided with several wheel frame assemblies spaced circumferentially, and the wheel frame assembly is provided with vertical load-bearing wheels, radial limiting wheels and suspension cylinders;

[0009] The vertical load-bearing wheel is rolled on the circular track, the radial limiting wheel is limited by the circular track, the suspension cylinder is installed on the wheel frame assembly, one end of the suspension cylinder is connected to the bridge pier, and the other end is connected to the mounting part of the vertical load-bearing wheel.

[0010] At least a portion of the wheel frame assembly is provided with a drive component, which is engaged with a gear ring drive to drive the wheel frame assembly to move circumferentially along a ring track, thereby causing the bridge pier to rotate.

[0011] Furthermore, a guide flange is provided on the annular track, and the radial limiting wheel rolls with the side of the guide flange to limit the radial displacement of the wheel frame assembly relative to the annular track.

[0012] Furthermore, the drive assembly includes a hydraulic drive motor mounted on the wheel frame assembly and a drive gear connected to the output end of the hydraulic drive motor, the drive gear meshing with the gear ring.

[0013] Furthermore, there are multiple driving components, which are arranged at circumferential intervals along the pier.

[0014] Furthermore, the system also includes a synchronization controller, which is connected to multiple drive components and is used to control the multiple drive components to drive synchronously.

[0015] Furthermore, the bridge pier is equipped with a tilt sensor, which is used to detect the tilt state of the bridge pier.

[0016] Furthermore, a pressure sensor is provided on the suspension cylinder, which is used to detect the supporting pressure of the corresponding suspension cylinder.

[0017] Furthermore, the system also includes a controller, which is connected to the suspension cylinder and to the pressure sensor and / or the tilt sensor;

[0018] The controller is used to adjust the support pressure of at least one of the suspension cylinders based on the support pressure detected by the pressure sensor and / or the tilt state detected by the tilt sensor.

[0019] Furthermore, a rear-turn locking structure is provided between the annular track foundation and the bridge pier. The rear-turn locking structure is a concrete locking structure cast in the gap between the annular track foundation and the bridge pier.

[0020] A construction method for a bridge multi-point support adaptive rotation system, the construction method comprising:

[0021] S1: Construct the circular track foundation, and install the circular track and gear ring on the circular track foundation, so that the gear ring is fixed relative to the circular track foundation;

[0022] S2: Install several wheel frame assemblies at circumferential intervals at the bottom of the bridge pier, and install vertical load-bearing wheels, radial limiting wheels, suspension cylinders and drive components on the wheel frame assemblies;

[0023] S3: Adjust the support state of the vertical support wheel by means of the suspension cylinder, so that the vertical support wheel is rolled and supported on the annular track, and the radial limiting wheel is limited and engaged with the annular track;

[0024] S4: Activate the drive assembly to engage with the gear ring drive, thereby driving the wheel frame assembly to move circumferentially along the annular track;

[0025] S5: During the circumferential movement of the wheel frame assembly, the pier is rotated by the wheel frame assembly, and the support pressure of at least one of the suspension cylinders is adjusted to maintain the stability of the pier's rotational posture.

[0026] S6: After the bridge pier rotates to the predetermined position, concrete is poured in the gap between the circular track foundation and the bridge pier to form a post-rotation locking structure.

[0027] The present invention provides a bridge multi-point support adaptive rotation system and its construction method, which have the following beneficial effects:

[0028] This invention utilizes a combination of a circular track foundation, a multi-point wheel frame assembly, vertical load-bearing wheels, radial limiting wheels, and a gear ring drive assembly to enable the bridge pier to rotate smoothly along a fixed circular track under multi-point support, thereby dispersing the vertical load and reducing localized stress concentration. The suspension cylinder can adjust the pressure at each support point, and in conjunction with sensors and controllers, it can correct the rotation posture in real time, reducing offset and swaying, and improving rotation accuracy, safety, construction efficiency, and adaptability to different bridge working conditions. Attached Figure Description

[0029] Figure 1 This is a front view structural diagram of the rotating support part in a bridge multi-point support adaptive rotating system.

[0030] Figure 2 This is a top view schematic diagram of the rotating support section in a multi-point support adaptive rotating system for bridges.

[0031] In the diagram: 1. Circular track foundation; 2. Radial limiting wheel; 3. Vertical load-bearing wheel; 4. Pressure sensor; 5. Suspension cylinder; 6. Wheel frame assembly; 7. Pier; 8. Tilt sensor; 9. Drive assembly; 10. Circular track; 11. Gear ring. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0033] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0034] like Figures 1-2 As shown in the figure, an adaptive rotation system for bridge multi-point support provided by an embodiment of the present invention includes a ring track foundation 1 and a pier 7 located above the ring track foundation 1. A ring track 10 is provided on the ring track foundation 1, and a toothed ring 11 is provided on the outer side of the ring track 10. The toothed ring 11 is fixedly set relative to the ring track foundation 1.

[0035] The bottom of the pier 7 is provided with several wheel frame assemblies 6 spaced circumferentially. Each wheel frame assembly 6 is equipped with a vertical load-bearing wheel 3, a radial limiting wheel 2, and a suspension cylinder 5. The vertical load-bearing wheel 3 is rolled and supported on a circular track 10. The radial limiting wheel 2 is in a limiting engagement with the circular track 10. The suspension cylinder 5 is installed on the wheel frame assembly 6, with one end connected to the pier 7 and the other end connected to the mounting part of the vertical load-bearing wheel 3.

[0036] At least a portion of the wheel frame assembly 6 is provided with a drive assembly 9, which is in drive engagement with the gear ring 11 to drive the wheel frame assembly 6 to move circumferentially along the annular track 10, thereby causing the pier 7 to rotate. The drive assembly 9 includes a hydraulic drive motor mounted on the wheel frame assembly 6 and a drive gear connected to the output end of the hydraulic drive motor, the drive gear meshing with the gear ring 11.

[0037] In one embodiment of the present invention, the invention is applicable to construction scenarios where the bridge pier 7 and its superstructure need to rotate circumferentially relative to the circular track foundation 1 during bridge rotation construction. The circular track foundation 1 is set at the construction location as a fixed load-bearing foundation, the circular track 10 is fixedly set on the circular track foundation 1, and the gear ring 11 is set on the outside of the circular track 10 and remains fixed relative to the circular track foundation 1. The bridge pier 7 does not rotate directly through the central ball joint, but is supported on the circular track 10 by several wheel frame assemblies 6 set at the bottom of the bridge pier 7, thereby distributing the vertical load of the bridge pier 7 and its superstructure to multiple support positions.

[0038] In operation, the vertical load-bearing rollers 3 roll on the circular track 10. The weight of the pier 7 and its superstructure is transferred to the circular track 10 and the circular track foundation 1 via the suspension cylinder 5 and the vertical load-bearing rollers 3. The suspension cylinder 5 is mounted on the wheel frame assembly 6, with one end connected to the pier 7 and the other end connected to the mounting part of the vertical load-bearing roller 3. Therefore, the suspension cylinder 5 can form an adjustable support structure between the pier 7 and the vertical load-bearing rollers 3. Before or during rotation, the support state of the corresponding vertical load-bearing rollers 3 can be adjusted by extending and retracting the suspension cylinder 5, so that the multiple support points at the bottom of the pier 7 can bear the load more evenly, thereby improving the stability of the support during the rotation of the pier 7.

[0039] When the pier 7 rotates, the hydraulic drive motor in the drive assembly 9 drives the drive gear to rotate. Since the drive gear meshes with the fixed gear ring 11, the drive gear generates a circumferential traveling force relative to the gear ring 11 during rotation, thereby driving the wheel frame assembly 6, which is equipped with the drive assembly 9, to move circumferentially along the annular track 10. Since the wheel frame assembly 6 is located at the bottom of the pier 7 and forms a supporting connection with the pier 7, when the wheel frame assembly 6 moves along the annular track 10, it can drive the pier 7 and its upper bridge body to rotate around the center of the annular track foundation 1.

[0040] During the aforementioned rotation process, the vertical load-bearing wheel 3 is mainly used to bear the vertical load and achieve rolling movement. The radial limiting wheel 2 cooperates with the annular track 10 to limit the radial displacement of the wheel frame assembly 6 relative to the annular track 10, so that the wheel frame assembly 6 can move stably along a predetermined circumferential trajectory, avoiding significant deviation of the pier 7 during rotation. Thus, the vertical load-bearing wheel 3, the radial limiting wheel 2, the suspension cylinder 5, and the drive assembly 9 respectively undertake the functions of bearing, limiting, adjusting, and driving, and are integrated into a rotating support unit that can move along the annular track 10 through the wheel frame assembly 6.

[0041] The basic principle of this invention is as follows: the annular track base 1, the annular track 10, and the gear ring 11 constitute a fixed side structure; the pier 7, the wheel frame assembly 6, the vertical load-bearing wheel 3, the radial limiting wheel 2, the suspension cylinder 5, and the drive assembly 9 constitute a movable side structure that rotates with the pier 7; the drive assembly 9 obtains circumferential driving force through meshing with the fixed gear ring 11; the vertical load-bearing wheel 3 rolls along the fixed annular track 10; the radial limiting wheel 2 constrains the radial position of the wheel frame assembly 6; and the suspension cylinder 5 forms an adjustable support between the pier 7 and the vertical load-bearing wheel 3. Through the above coordination, the pier 7 can rotate smoothly along the annular track 10 under multi-point support.

[0042] Compared to structures that rely on a single central support for rotation, this invention uses multiple wheel frame assemblies 6 spaced circumferentially along the pier 7, distributing the vertical load of the pier 7 across multiple vertical load-bearing wheels 3, reducing the stress concentration at a single support location. Through the meshing transmission between the drive assembly 9 and the gear ring 11, the output power of the hydraulic drive motor can be converted into the circumferential movement force of the wheel frame assembly 6 along the annular track 10. The transmission path is clear, facilitating the rotation construction of the pier 7. The cooperation between the radial limiting wheel 2 and the annular track 10 further improves the guiding stability of the wheel frame assembly 6 during its movement.

[0043] This invention allows for adaptive configuration of the quantity and arrangement of the wheel frame assembly 6, vertical load-bearing wheels 3, radial limiting wheels 2, suspension cylinders 5, and drive components 9 based on the weight of the pier 7 and its superstructure, the rotation radius, and construction space conditions. Therefore, it is applicable to the rotation construction of bridges of different scales. The system utilizes a circular track support and circumferential movement of the wheel frame assembly to achieve the rotation of the pier 7. The structural relationship is clear, the load-bearing path is well-defined, and it possesses good engineering applicability and promotional value.

[0044] In this embodiment, a guide flange is provided on the annular track 10, and the radial limiting wheel 2 rolls against the side of the guide flange to limit the radial displacement of the wheel frame assembly 6 relative to the annular track 10. The guide flange on the annular track 10 serves as a radial limiting reference, and the radial limiting wheel 2 rolls against the side of the guide flange when the wheel frame assembly 6 moves circumferentially along the annular track 10. Through this engagement, the radial position of the wheel frame assembly 6 can be constrained, ensuring that the vertical load-bearing wheel 3 is stably maintained in the bearing position of the annular track 10, preventing the wheel frame assembly 6 from radially deviating or deviating from the predetermined motion trajectory during rotation, thereby improving the stability and safety of the bridge pier 7 during rotation.

[0045] In this embodiment, there are multiple drive components 9, which are arranged at intervals along the circumference of the pier 7. This arrangement allows the driving force to be applied synchronously from multiple positions at the bottom of the pier 7. During rotation, the multiple drive components 9 engage with the gear ring 11 and jointly drive the corresponding wheel frame assembly 6 to move circumferentially along the annular track 10, thereby causing the pier 7 to rotate smoothly. This arrangement disperses the driving load of individual drive components 9, reduces localized force concentration, and improves the synchronicity and stability of the pier 7 during rotation.

[0046] In this embodiment, the system also includes a synchronization controller connected to multiple drive components 9, used to control the synchronous driving of the multiple drive components 9. The synchronization controller coordinates the actions of the multiple drive components 9. During rotation, the synchronization controller controls the multiple drive components 9 to run at consistent or matched drive speeds, causing the multiple wheel frame assemblies 6 to move synchronously circumferentially along the circular track 10, avoiding deflection, jamming, or excessive local stress on the pier 7 due to asynchronous outputs from the drive components 9. This setting improves the motion consistency and rotation accuracy of the pier 7 during rotation.

[0047] In this embodiment, a tilt sensor 8 is installed on the pier 7 to detect the tilt state of the pier 7. A pressure sensor 4 is installed on the suspension cylinder 5 to detect the supporting pressure of the corresponding suspension cylinder 5. The tilt sensor 8 is used to acquire the tilt state of the pier 7 in real time, and the pressure sensor 4 is used to acquire the supporting pressure of the corresponding suspension cylinder 5 in real time. During the rotation process, when the pier 7 tilts due to uneven force or changes in motion resistance, the force state of each support position can be determined based on the detection results of the tilt sensor 8 and the pressure sensor 4, providing a basis for subsequent adjustment of the suspension cylinder 5. Through this setting, the attitude changes of the pier 7 and the load-bearing status of each support point can be grasped in a timely manner, which is beneficial to improving the stability and safety of the rotation process.

[0048] The system also includes a controller connected to the suspension cylinder 5 and to a pressure sensor 4 and / or a tilt sensor 8. The controller adjusts the support pressure of at least one suspension cylinder 5 based on the support pressure detected by the pressure sensor 4 and / or the tilt state detected by the tilt sensor 8. The controller receives the support pressure detected by the pressure sensor 4 and / or the tilt state detected by the tilt sensor 8, and adjusts the support pressure of at least one suspension cylinder 5 according to the detection results. During the rotation process, if the pressure at a certain support point is too high or too low, or if the pier 7 shows a tilting trend, the controller can control the corresponding suspension cylinder 5 to extend, retract, or adjust its pressure to balance the force on each support point and correct the posture of the pier 7. This setting enables adaptive leveling of the pier 7 during rotation, improving rotation stability and safety.

[0049] In the above embodiments, the controller can be a PLC controller, an industrial controller, or a microcontroller controller. The suspension cylinder 5 is connected to a hydraulic pump station, and an electromagnetic directional valve, a proportional valve, or a servo valve is installed between the hydraulic pump station and the suspension cylinder 5. The controller adjusts the extension and contraction of the suspension cylinder 5 and its support pressure by controlling the opening and closing state or opening degree of the electromagnetic directional valve, proportional valve, or servo valve. The pressure sensor 4 sends the support pressure signal of the corresponding suspension cylinder 5 to the controller, and the tilt sensor 8 sends the tilt state signal of the pier 7 to the controller. The controller compares the received support pressure signal and / or tilt state signal with a preset pressure range, a preset pressure difference, or a preset tilt angle range. When the support pressure of a certain suspension cylinder 5 is greater than the preset value, the controller controls the corresponding suspension cylinder 5 to reduce the support pressure; when the support pressure of a certain suspension cylinder 5 is less than the preset value, the controller controls the corresponding suspension cylinder 5 to increase the support pressure. When the pier 7 tilts, the controller controls at least one suspension cylinder 5 located on the tilted side or the opposite side to extend and contract according to the tilt direction, so as to reduce the tilt state of the pier 7 and make the support pressure of each support point tend to be balanced. Through the above closed-loop control method, multiple support points can be adjusted in real time during the rotation of pier 7, so that pier 7 can maintain a stable support posture, thereby improving the feasibility of the system and the safety of rotation.

[0050] In this embodiment, a post-rotation locking structure is provided between the circular track foundation 1 and the pier 7. This post-rotation locking structure is a concrete locking structure cast within the gap between the circular track foundation 1 and the pier 7. The post-rotation locking structure is used to fix the relative position between the pier 7 and the circular track foundation 1 after the pier 7 has rotated into place. During construction, after the pier 7 rotates to the predetermined position, concrete is poured into the gap between the circular track foundation 1 and the pier 7. After the concrete solidifies, it forms the locking structure connecting the circular track foundation 1 and the pier 7. This design allows the pier 7 to be converted from a rotation construction state to a stable support state, reducing the need for secondary mechanical locking after rotation and improving the overall stability of the pier 7 after it is in place.

[0051] like Figures 1-2 As shown in the figure, this embodiment of the invention also provides a construction method for a bridge multi-point support adaptive rotation system, the construction method including:

[0052] A construction method for a bridge multi-point support adaptive rotation system, the construction method comprising:

[0053] S1: Construct the circular track foundation 1, and install the circular track 10 and the gear ring 11 on the circular track foundation 1, so that the gear ring 11 is fixed relative to the circular track foundation 1.

[0054] S2: Install several wheel frame assemblies 6 at circumferential intervals at the bottom of the pier 7, and install vertical load-bearing wheels 3, radial limiting wheels 2, suspension cylinders 5 and drive components 9 on the wheel frame assemblies 6;

[0055] S3: Adjust the support state of the vertical support wheel 3 by means of the suspension cylinder 5, so that the vertical support wheel 3 is rolled and supported on the ring track 10, and the radial limit wheel 2 is limited and matched with the ring track 10.

[0056] S4: Start the drive assembly 9, so that the drive assembly 9 and the gear ring 11 are engaged in transmission, so as to drive the wheel frame assembly 6 to move circumferentially along the circular track 10;

[0057] S5: During the circumferential movement of the wheel frame assembly 6, the pier 7 is rotated by the wheel frame assembly 6, and the support pressure of at least one suspension cylinder 5 is adjusted to maintain the stability of the rotation posture of the pier 7.

[0058] S6: After the pier 7 rotates to the predetermined position, concrete is poured in the gap between the circular track foundation 1 and the pier 7 to form a locking structure after rotation.

[0059] In the aforementioned construction process, the circular track foundation 1, the circular track 10, and the gear ring 11 serve as the fixed-side structure, while the pier 7, wheel frame assembly 6, vertical load-bearing wheel 3, radial limiting wheel 2, suspension cylinder 5, and drive assembly 9 serve as the movable-side structure. After the drive assembly 9 engages with the fixed gear ring 11, it causes the wheel frame assembly 6 to move circumferentially along the circular track 10, thereby driving the pier 7 to rotate. The vertical load-bearing wheel 3 bears the vertical load of the pier 7, the radial limiting wheel 2 limits the radial offset of the wheel frame assembly 6, and the suspension cylinder 5 adjusts the support pressure at the corresponding support positions. Thus, the pier 7 can be smoothly rotated under multi-point support, and after rotation, a concrete locking structure secures the pier 7 to the circular track foundation 1.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A bridge multi-point support adaptive rotation system, comprising a ring track foundation (1) and piers (7) located above the ring track foundation (1), characterized in that, A ring track (10) is provided on the ring track base (1), and a toothed ring (11) is provided on the outer side of the ring track (10). The toothed ring (11) is fixedly provided relative to the ring track base (1). The bottom of the pier (7) is provided with several wheel frame assemblies (6) spaced circumferentially. The wheel frame assembly (6) is provided with a vertical load-bearing wheel (3), a radial limiting wheel (2) and a suspension cylinder (5). The vertical load-bearing wheel (3) is rolled on the ring track (10), the radial limiting wheel (2) is limited to the ring track (10), the suspension cylinder (5) is installed on the wheel frame assembly (6), one end of the suspension cylinder (5) is connected to the pier (7), and the other end is connected to the mounting part of the vertical load-bearing wheel (3); At least part of the wheel frame assembly (6) is provided with a drive assembly (9), which is in transmission cooperation with the gear ring (11) to drive the wheel frame assembly (6) to move circumferentially along the ring track (10) so as to drive the pier (7) to rotate.

2. The bridge multi-point support adaptive rotation system according to claim 1, characterized in that, The annular track (10) is provided with a guide flange, and the radial limiting wheel (2) rolls with the side of the guide flange to limit the radial displacement of the wheel frame assembly (6) relative to the annular track (10).

3. The bridge multi-point support adaptive rotation system according to claim 1, characterized in that, The drive assembly (9) includes a hydraulic drive motor mounted on the wheel frame assembly (6) and a drive gear connected to the output end of the hydraulic drive motor, the drive gear meshing with the gear ring (11).

4. The bridge multi-point support adaptive rotation system according to claim 3, characterized in that, There are multiple drive components (9), and the multiple drive components (9) are arranged at circumferential intervals along the pier (7).

5. The bridge multi-point support adaptive rotation system according to claim 4, characterized in that, It also includes a synchronization controller, which is connected to the plurality of drive components (9) for controlling the synchronous driving of the plurality of drive components (9).

6. The bridge multi-point support adaptive rotation system according to claim 1, characterized in that, An inclination sensor (8) is installed on the pier (7) to detect the inclination state of the pier (7).

7. The bridge multi-point support adaptive rotation system according to claim 1, characterized in that, A pressure sensor (4) is provided on the suspension cylinder (5), and the pressure sensor (4) is used to detect the support pressure of the corresponding suspension cylinder (5).

8. A bridge multi-point support adaptive rotation system according to claim 6 or 7, characterized in that, It also includes a controller, which is connected to the suspension cylinder (5) and to the pressure sensor (4) and / or the tilt sensor (8); The controller is used to adjust the support pressure of at least one of the suspension cylinders (5) based on the support pressure detected by the pressure sensor (4) and / or the tilt state detected by the tilt sensor (8).

9. A bridge multi-point support adaptive rotation system according to claim 1, characterized in that, A rear-turn locking structure is provided between the circular track foundation (1) and the bridge pier (7). The rear-turn locking structure is a concrete locking structure cast in the gap between the circular track foundation (1) and the bridge pier (7).

10. A construction method for a bridge multi-point support adaptive rotation system, characterized in that, The construction method of the bridge multi-point support adaptive rotation system as described in any one of claims 1 to 9 includes: S1: Construct a circular track foundation (1), and install a circular track (10) and a gear ring (11) on the circular track foundation (1), so that the gear ring (11) is fixed relative to the circular track foundation (1); S2: Install several wheel frame assemblies (6) at circumferential intervals at the bottom of the pier (7), and install vertical load-bearing wheels (3), radial limiting wheels (2), suspension cylinders (5) and drive components (9) on the wheel frame assemblies (6). S3: Adjust the support state of the vertical load-bearing wheel (3) by means of the suspension cylinder (5), so that the vertical load-bearing wheel (3) is rolled and supported on the ring track (10), and the radial limiting wheel (2) is limited and matched with the ring track (10); S4: Start the drive assembly (9) so that the drive assembly (9) and the gear ring (11) are engaged in transmission to drive the wheel frame assembly (6) to move circumferentially along the annular track (10); S5: During the circumferential movement of the wheel frame assembly (6), the pier (7) is rotated by the wheel frame assembly (6), and the support pressure of at least one of the suspension cylinders (5) is adjusted to maintain the stability of the rotation posture of the pier (7). S6: After the bridge pier (7) rotates to the predetermined position, concrete is poured in the gap between the circular track foundation (1) and the bridge pier (7) to form a lock structure after rotation.

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