Intelligent force bearing adjusting device for bridge swivel construction

Abstract

The invention relates to an intelligent force bearing adjusting device for bridge swivel construction. The intelligent force bearing adjusting device comprises a walking trolley, a rubber pad, a base plate, a hydraulic system, a fixing frame, a pressure sensor, a lower supporting foot and an upper supporting foot. The walking trolley is provided with rolling wheels, the rubber pad is installed between the top of the walking trolley and the base plate, the hydraulic system is installed on the base plate, comprises a plurality of hydraulic jacks and has the displacement synchronization and pressure real-time adjusting functions, and the fixing frame is integrally provided with the walking trolley, the rubber pad, the base plate and the hydraulic system and is connected with the lower supporting foot. The pressure sensor is arranged at the bottom of the lower supporting foot and used for monitoring the stress state of the force bearing device in real time, a gap t1 is formed between the upper supporting foot and the lower supporting foot, and the gap t1 is larger than a gap t2 between a safety fulcrum of the bridge horizontal rotation system and the sliding way system, so that the safety fulcrum and the force bearing device are not stressed at the same time when the bridge falls off. The problems that a traditional spherical hinge swivel system is concentrated in stress, unstable in bridge posture, long in construction period and the like can be effectively solved.

Description

Technical Field

[0001] The present invention belongs to the field of bridge engineering, and particularly relates to an intelligent adjustment bearing device for bridge rotation construction. Background Art

[0002] With the gradual construction of the comprehensive three-dimensional transportation network, the extension and densification of the road network, and the rapid advancement of the urbanization process, the bridge rotation construction technology is increasingly widely used in crossing high-grade highways, railways, and complex terrain conditions. Especially in the development trend of super-large and super-heavy bridges such as large-span, high-rise structures, large cantilevers, asymmetric-span rotations, and wide decks, the traditional bridge construction methods are difficult to meet the engineering requirements. At present, for bridges with a rotation tonnage exceeding 20,000 tons at home and abroad, a spherical hinge rotation system is mostly adopted. This system mainly relies on the central spherical hinge to support the bridge, and the peripheral insurance supports only provide auxiliary support. This single-point support structure causes the stress on the lower bearing platform to be concentrated during the rotation process. At the same time, the rigid displacement mutation method used in the weighing test requires the bridge to be able to rotate vertically relative to the central spherical hinge, making the bridge in a non-horizontal state during the rotation process, which is prone to causing the center of gravity to shift. In addition, after the bridge rotation is completed, additional attitude adjustment is still required to ensure that the bridge elevation meets the design requirements, thus prolonging the construction period and increasing the cost.

[0003] The existing spherical hinge rotation system has the following deficiencies: (1) The main weight of the rotating bridge is borne by the central spherical hinge, and the insurance support only provides a very small vertical reaction force during the rotation process, usually not exceeding 1% of the total reaction force, resulting in a highly concentrated stress on the lower bearing platform and affecting the structural stress balance; (2) For bridges using the rigid displacement mutation method for the weighing test, the structural design requires the bridge to have the ability to rotate vertically relative to the central spherical hinge. Therefore, a certain gap must be maintained between the support and the slideway, making the bridge in a non-horizontal state during the rotation process, prone to vertical rotation phenomena such as one end lowering and one end raising. Especially for high-rise structure bridges, their center of gravity eccentricity is relatively large, seriously affecting the structural safety and stability; (3) After the rotation of the rotating bridge using the single-point support structure is completed, attitude adjustment is still required. Usually, one end of the bridge needs to be jacked up and its elevation adjusted to the design state, which not only lengthens the construction period but also increases the construction cost. In addition, due to the single-center stress characteristic of the spherical hinge, the traditional spherical hinge rotation system is difficult to meet the anti-overturning safety and attitude maintenance requirements of super-large tonnage (40,000 - 80,000 tons), long cantilever (150 - 300 m), large span (250 - 400 m), asymmetric-span rotation, curved bridge, high-rise bridge structure, and construction unbalanced loads (such as sudden strong winds, falling of bridge deck equipment, etc.). Therefore, in the face of complex construction conditions and growing engineering requirements, the existing technology urgently needs to be improved to enhance the safety, stability, and construction efficiency of bridge rotation construction. Summary of the Invention

[0004] In view of the problems of force concentration, unstable bridge posture, long construction period and difficulty in adapting to super-large tonnage and complex structure bridges in the prior art, the present invention provides an intelligent adjustable load-bearing device for bridge rotation construction to improve the safety, stability and construction efficiency of rotation construction.

[0005] To achieve the above object, the technical solution of the present invention is as follows:

[0006] An intelligent adjustable load-bearing device for bridge rotation construction, comprising: a walking trolley, a rubber pad, a pad, a hydraulic system, a fixed frame, a pressure sensor, a lower support leg and an upper support leg; the walking trolley is provided with rollers and can roll radially along the slideway system of the bridge horizontal rotation system; the rubber pad is installed between the top of the walking trolley and the pad, and the load of the walking trolley is evenly distributed through the deformation of the rubber pad itself; the hydraulic system is installed on the pad, and includes a plurality of hydraulic jacks, which have the functions of displacement synchronization and real-time pressure adjustment; the fixed frame is integrated with the walking trolley, rubber pad, pad and hydraulic system, and is connected to the lower support leg; the pressure sensor is arranged at the bottom of the lower support leg, and is used to monitor the stress state of the load-bearing device in real time; a gap t1 is provided between the upper support leg and the lower support leg, and the gap t1 is larger than the gap t2 between the safety fulcrum of the bridge horizontal rotation system and the slideway system, so that the safety fulcrum and the load-bearing device are not subjected to stress at the same time when the bridge is dropped.

[0007] Preferably, the traveling trolley, rubber pad, pad and hydraulic system are all installed inside the fixed frame and rotate with the bridge.

[0008] Preferably, there is no gap between the backing plate and the fixed frame on all sides, and the hydraulic system is embedded in the groove of the backing plate.

[0009] Preferably, the rollers of the traveling trolley are of a conical structure, and the rollers of the conical structure are adapted to the annular slideway of the slideway system.

[0010] Preferably, the hydraulic system is configured to automatically release pressure when the force on the load-bearing device exceeds the design value, and automatically increase pressure when the force is lower than the design value, so as to keep the force on the load-bearing device within the design range.

[0011] Preferably, during rotation, the hydraulic system is only subjected to vertical pressure and can only move up and down.

[0012] Preferably, the upper support leg is fixedly arranged on the upper turntable, and when rotating, the jack of the hydraulic system is lifted up, so that the fixed frame, the pressure sensor and the lower support leg move upward and are fixed to the upper support leg.

[0013] Preferably, the pressure sensor is ultra-thin and has the functions of real-time pressure display and over-limit warning.

[0014] Preferably, 3-4 load-bearing devices are provided and are evenly arranged along the slideway system of the horizontal rotation system of the bridge.

[0015] Preferably, each of the load-bearing devices provides 1000-2000 tons of vertical supporting force, bearing 10%-20% of the total swivel tonnage of the bridge.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] The intelligent load-bearing device for bridge rotation construction provided by the present invention can effectively solve the problems of concentrated force, unstable bridge posture, and long construction period in the traditional ball joint rotation system. The device is generally set up with 3 to 4 pieces, evenly arranged on the slideway system. Each load-bearing device can provide a vertical support force of 1,000 to 2,000 tons, and the total support force accounts for 10 to 20% of the total rotation tonnage of the bridge, greatly improving the force balance of the upper and lower turntables of the rotation and the system bearing capacity, making it suitable for the rotation construction of complex bridges such as super-large tonnage (50,000 to 80,000 tons), long cantilever (150 to 300m), large span (250 to 400m), significant plane curve, asymmetric span rotation, wide bridge deck, and tall structure, thereby improving the reliability and economy of the rotation system. The load-bearing device of the present invention has the characteristics of active bearing, automatic control, real-time monitoring, and precise running. It can finely adjust the posture of the beam before rotation, and intelligently and automatically adjust the bridge posture during the rotation process to cope with unbalanced loads such as sudden strong winds and falling bridge deck equipment, so as to ensure the safe rotation of the bridge. The device adopts a cone-shaped roller walking trolley, which can roll radially along the annular slide to reduce movement resistance and improve walking stability. The rubber pad is installed on the top of the walking trolley and the bottom of the pad, and the load is evenly distributed through its own deformation to ensure that multiple rollers are balanced. The hydraulic system is composed of multiple hydraulic jacks, which have the functions of displacement synchronization and real-time pressure adjustment. It can automatically release pressure when the force exceeds the limit, and automatically increase pressure when the force is insufficient, so as to adapt to the unevenness of the slide, and ensure that the load-bearing device is always within the designed force range. In addition, before the rotation, the lower support leg is lifted by the hydraulic system, contacts and consolidates with the upper support leg, provides vertical support force, so that the bridge axis can be in place at one time, reduces the process of bridge posture adjustment after rotation, and improves construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional schematic diagram of a swivel system with an intelligent load-bearing device for adjusting the load in this embodiment;

[0019] Figure 2 A schematic plan view of a swivel system with an intelligent load-bearing device for adjusting the load in this embodiment;

[0020] Figure 3 This is a schematic elevation diagram of a swivel system with an intelligent load-bearing device for adjusting the load in this embodiment;

[0021] Figure 4 Partial schematic diagram of the intelligent adjustment load-bearing device in this embodiment;

[0022] Figure 5 Structural schematic diagram of the intelligent adjustment load-bearing device in this embodiment (before rotation);

[0023] Figure 6 Structural schematic diagram of the intelligent adjustment load-bearing device in this embodiment (during rotation).

[0024] Explanation of reference numerals: 1 - spherical hinge, 2 - insurance support point, 3 - load-bearing device, 4 - traction system, 5 - slideway system, 3-1 - traveling trolley, 3-2 - rubber pad, 3-3 - backing plate, 3-4 - hydraulic system, 3-5 - fixed frame, 3-6 - pressure sensor, 3-7 - lower brace foot, 3-8 - upper brace foot. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the present invention.

[0026] In addition, the described features, structures or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, many specific details are provided to give a full understanding of the embodiments of the present application. However, those skilled in the art will realize that the technical solutions of the present application can be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, well-known methods, devices, implementations or operations are not shown or described in detail to avoid obscuring various aspects of the present application.

[0027] As Figure 1 shown, the intelligent adjustment load-bearing device 3 for bridge rotation construction disclosed in this embodiment, together with the spherical hinge 1, the insurance support point 2, the traction system 4, and the slideway system 5, jointly constitutes a bridge horizontal rotation system. The intelligent adjustment load-bearing device 3, as a key stress component during the bridge rotation process, works in coordination with the spherical hinge 1 to jointly bear the weight and stress changes during the bridge rotation. The insurance support point 2 provides auxiliary support during the rotation process to ensure the safety of the system and plays a temporary stabilizing role at specific stages. The traction system 4 provides power for the bridge rotation, enabling the bridge to rotate smoothly along the set trajectory, while the slideway system 5 provides guiding support for the movement of the load-bearing device 3, enabling the load-bearing device 3 to move precisely along the slideway system 5, ensuring the attitude control and stress balance during the bridge rotation process, and improving the stability and safety of the construction.

[0028] This embodiment discloses an intelligent adjustable load-bearing device for bridge rotation construction, including a walking trolley 3-1, a rubber pad 3-2, a backing plate 3-3, a hydraulic system 3-4, a fixed frame 3-5, a pressure sensor 3-6, a lower support foot 3-7, and an upper support foot 3-8. Among them, the walking trolley 3-1 is provided with rollers and can roll radially along the slideway system 5 of the bridge horizontal rotation system. The rollers are designed with a conical structure to ensure that the walking trolley 3-1 rolls more smoothly on the slideway system 5, reduce the frictional resistance during operation, and improve the accuracy and stability of the rotation construction. The rubber pad 3-2 is installed between the top of the walking trolley 3-1 and the backing plate 3-3, and the load of the walking trolley 3-1 is evenly distributed through the deformation of the rubber pad 3-2 itself. The setting of the rubber pad 3-2 can effectively buffer the force change of the walking trolley 3-1 on the slideway system 5, avoid local stress concentration, ensure that each roller is evenly stressed, and improve the overall stability. The hydraulic system 3-4 is installed on the backing plate 3-3 and includes multiple hydraulic jacks with displacement synchronization and real-time pressure adjustment functions. The hydraulic system 3-4 ensures synchronous movement of all jacks during the jacking or falling process through synchronous control, avoiding uneven force on the device due to non-synchronization. At the same time, the real-time pressure adjustment function enables the hydraulic system 3-4 to automatically relieve pressure when the load-bearing device 3 is overloaded and automatically pressurize when the force is insufficient to adapt to the unevenness of the slideway system 5 and ensure that the force on the load-bearing device 3 is always within the design range. The fixed frame 3-5 integrally installs the walking trolley 3-1, the rubber pad 3-2, the backing plate 3-3, and the hydraulic system 3-4 and is connected to the lower support foot 3-7. The integrated design of the fixed frame 3-5 ensures the compact arrangement of each component, enables the device to maintain overall stability during the bridge rotation process, and provides a rigid support for the operation of the hydraulic system 3-4. The pressure sensor 3-6 is set at the bottom of the lower support foot 3-7 and is used to monitor the force state of the load-bearing device 3 in real time. The pressure sensor 3-6 adopts a compact design to reduce the impact on the overall structure of the device, enable it to be installed in a limited space, and ensure high-precision monitoring of the force state of the load-bearing device 3. There is a gap t1 between the upper support foot 3-8 and the lower support foot 3-7, and the gap t1 is greater than the gap t2 between the insurance fulcrum 2 of the bridge horizontal rotation system and the slideway system 5, so that the insurance fulcrum 2 and the load-bearing device 3 are not stressed simultaneously when the bridge is decayed, and their functions do not overlap, improving the safety and controllability of the construction.

[0029] Furthermore, the trolley 3-1, rubber pad 3-2, pad 3-3, and hydraulic system 3-4 are all installed inside the fixed frame 3-5 and rotate with the bridge. The fixed frame 3-5 serves as a load-bearing structure, which keeps the trolley 3-1, rubber pad 3-2, pad 3-3, and hydraulic system 3-4 stable as a whole, and moves synchronously during the rotation of the bridge, ensuring that all components work together to avoid abnormal force or unstable operation of the device due to relative displacement. There is no gap between the pad 3-3 and the fixed frame 3-5, and the hydraulic system 3-4 is embedded in the groove of the pad 3-3. This structural design enhances the overall rigidity of the pad 3-3 and the fixed frame 3-5, ensures the stable installation of the hydraulic system 3-4, enables the hydraulic jack to accurately transmit the force of lifting or falling during operation, and effectively avoids lateral displacement of the device under stress.

[0030] Furthermore, the rollers of the trolley 3-1 are of a conical structure, and the rollers of the conical structure are adapted to the annular slide of the slide system 5. The design of the conical rollers enables the trolley 3-1 to roll stably along the annular slide and provide better guidance in the radial direction, thereby reducing rolling friction and improving the movement stability of the trolley 3-1, thereby ensuring the precise alignment of the bridge during the rotation process and improving the safety and reliability of the construction.

[0031] In this embodiment, the hydraulic system 3-4 is configured to automatically release pressure when the force on the intelligent adjustable load-bearing device 3 exceeds the design value, and automatically increase pressure when the force is lower than the design value, so as to keep the force on the intelligent adjustable load-bearing device 3 within the design range. The hydraulic system 3-4 monitors the force state of the intelligent adjustable load-bearing device 3 in real time, dynamically adjusts the internal pressure, and ensures that the intelligent adjustable load-bearing device 3 can provide stable bearing force under various construction conditions, avoiding structural damage due to excessive force, or affecting the stability of the bridge rotation due to insufficient force. During the rotation, the hydraulic system 3-4 only bears vertical pressure and can only move up and down. The vertical force characteristics of the hydraulic system 3-4 ensure that the hydraulic jack will not generate lateral force during the lifting or falling process, thereby avoiding the load-bearing device 3 from tilting or shifting during the force process, and improving the stability and safety of the system. The upper support leg 3-8 is fixedly arranged on the upper turntable. When rotating, the jack of the hydraulic system 3-4 lifts up, so that the fixed frame 3-5, the pressure sensor 3-6 and the lower support leg 3-7 move upward and consolidate with the upper support leg 3-8. The hydraulic system 3-4 provides precise lifting force during the lifting process, so that the lower support leg 3-7 gradually rises and finally contacts firmly with the upper support leg 3-8, thereby realizing precise positioning during the rotation of the bridge, reducing the need for adjusting the bridge posture after rotation, and improving construction efficiency.

[0032] Furthermore, the pressure sensor 3-6 is in an ultra-thin form and has the functions of real-time pressure display and over-limit warning. The real-time pressure display function of the pressure sensor 3-6 can dynamically feedback the force-bearing condition of the force-bearing device 3, enabling the construction personnel to always grasp the change of the bearing force during the rotation process and ensuring the safety of the rotation construction. The over-limit warning function enables the pressure sensor 3-6 to immediately send out an alarm signal when the detected force exceeds the upper design limit or is lower than the lower design limit, prompting the construction personnel to make adjustments or the system to automatically adjust the pressure of the hydraulic system 3-4, thereby ensuring the stability and safety of the bridge rotation construction.

[0033] In this embodiment, according to the force-bearing and construction requirements, 3 to 4 force-bearing devices 3 are provided and evenly arranged along the slideway system 5 of the bridge horizontal rotation system. The uniform arrangement of the force-bearing devices 3 makes the force-bearing of the entire rotation system more balanced, avoiding the problem of uneven bearing caused by single-point force-bearing in the traditional spherical hinge system, and improving the stability and safety of the bridge during the rotation process. Each force-bearing device 3 provides a vertical bearing force of 1000-2000 tons and undertakes 10%-20% of the total rotation tonnage of the bridge. By jointly bearing the main force during the bridge rotation process by multiple force-bearing devices 3, the load on the central spherical hinge 1 is greatly reduced, thereby reducing the problem of concentrated force-bearing on the lower bearing platform, improving the load-bearing capacity of the entire system, and at the same time making the bridge rotation construction applicable to complex working conditions such as ultra-large tonnage, long cantilever, and large span, enhancing the safety and controllability of the construction.

[0034] In summary, the present invention discloses an intelligent adjustable bearing device for bridge rotation construction. This device, together with the spherical hinge 1, the insurance support 2, the traction system 4, and the slideway system 5, constitutes a bridge horizontal rotation system. It adopts a multi-point support method to optimize the force distribution during the bridge rotation process. The intelligent adjustable bearing device 3 includes components such as a hydraulic system 3-4, a pressure sensor 3-6, and a traveling trolley 3-1. Among them, the hydraulic system 3-4 realizes the active adjustment of the supporting force through the synchronous jacking or falling of multiple groups of hydraulic jacks, ensuring the attitude stability of the bridge during the rotation process. The pressure sensor 3-6 can monitor the bearing state in real time and has an over-limit warning function to prevent potential structural safety hazards caused by abnormal forces on the bridge. The traveling trolley 3-1 adopts a conical roller structure, enabling it to roll radially along the circular slideway of the slideway system 5, reducing friction and improving the accuracy and stability of the device movement. The intelligent adjustable bearing device 3 of the present invention has technical characteristics such as active load-bearing, automatic regulation, real-time monitoring, and precise traveling. It can finely adjust the beam body attitude before the bridge rotation and intelligently and automatically adjust the supporting force according to the force state during the rotation process, improving the construction safety and reliability. Usually, 3 to 4 bearing devices 3 are arranged evenly on the slideway system 5. Each bearing device 3 can provide a vertical supporting force of 1000 to 2000 tons, undertaking 10% - 20% of the total rotation tonnage of the bridge, effectively relieving the force on the central spherical hinge 1 and improving the force balance of the upper and lower turntables during rotation, thus greatly enhancing the load-bearing capacity of the system.

[0035] The proposal of the present invention breaks through the technical bottleneck of the traditional bridge rotation system and provides an efficient, reliable, and economical technical solution for bridge rotation construction under large tonnage, long cantilever, large span, and complex working conditions. While enhancing the stability of bridge rotation, this device improves the construction accuracy and efficiency, reduces the need for subsequent attitude adjustment of the bridge rotation, and lowers the construction cost. Especially in the face of unbalanced loads such as sudden strong winds and falling bridge deck equipment, it can provide stronger anti-overturning ability. The present invention can be widely applied to various rotating bridges, especially those with complex working conditions such as large tonnage (20,000 - 80,000 tons), long cantilever (150 - 300 m), large span (250 - 400 m), significant plane curve, asymmetric span rotation, wide bridge deck, high-rise structure, and high bridge deck. It overcomes problems of the traditional spherical hinge rotation system such as concentrated force, unstable bridge attitude, and long construction period, has prominent technical and economic advantages, good engineering adaptability and popularization value, and provides an innovative solution for the development of the bridge construction industry.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; under the idea of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above. For the sake of brevity, they are not provided in detail; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An intelligent adjusting load-bearing device for bridge rotation construction, characterized in that, The invention comprises a trolley (3-1), a rubber pad (3-2), a pad (3-3), a hydraulic system (3-4), a fixed frame (3-5), a pressure sensor (3-6), a lower support leg (3-7) and an upper support leg (3-8); the trolley (3-1) is provided with rollers and can roll radially along a slideway system (5) of a horizontal rotation system of a bridge; the rubber pad (3-2) is installed between the top of the trolley (3-1) and the pad (3-3), and the load of the trolley (3-1) is evenly distributed through the deformation of the rubber pad (3-2) itself; the hydraulic system (3-4) is installed on the pad (3-3), and comprises a plurality of hydraulic jacks, The invention has the functions of synchronous displacement and real-time pressure adjustment; the fixed frame (3-5) is integrated with a walking trolley (3-1), a rubber pad (3-2), a pad (3-3) and a hydraulic system (3-4), and is connected to a lower support leg (3-7); the pressure sensor (3-6) is arranged at the bottom of the lower support leg (3-7) and is used to monitor the stress state of the load-bearing device in real time; a gap t1 is arranged between the upper support leg (3-8) and the lower support leg (3-7), and the gap t1 is larger than the gap t2 between the safety fulcrum (2) and the slideway system (5) of the horizontal rotation system of the bridge, so that the safety fulcrum (2) and the load-bearing device (3) are not subjected to stress at the same time when the bridge is dropped.

2. The intelligent adjustment load-bearing device for bridge rotation construction according to claim 1, wherein The walking trolley (3-1), rubber pad (3-2), pad (3-3) and hydraulic system (3-4) are all installed inside the fixed frame (3-5) and rotate with the bridge.

3. The intelligent adjustment bearing device for bridge rotation construction according to claim 2, wherein, There is no gap around the pad (3-3) and the fixed frame (3-5), and the hydraulic system (3-4) is embedded in the groove of the pad (3-3).

4. The intelligent adjustment load-bearing device for bridge rotation construction according to claim 3, characterized in that, The roller of the traveling trolley (3-1) is a conical structure, and the roller of the conical structure is compatible with the annular slideway of the slideway system (5).

5. The intelligent adjustment load-bearing device for bridge rotation construction according to claim 4, characterized in that, The hydraulic system (3-4) is configured to automatically release pressure when the force applied to the load-bearing device (3) exceeds the design value, and to automatically increase pressure when the force applied is lower than the design value, so as to keep the force applied to the load-bearing device (3) within the design range.

6. The intelligent adjustment load-bearing device for bridge rotation construction according to claim 5, characterized in that, During rotation, the hydraulic system (3-4) only bears pressure in the vertical direction and can only move up and down.

7. The intelligent adjusting load-bearing device for bridge rotation construction according to claim 6, wherein, The upper support leg (3-8) is fixedly arranged on the upper turntable. When rotating, the jack of the hydraulic system (3-4) is lifted, so that the fixed frame (3-5), the pressure sensor (3-6) and the lower support leg (3-7) move upward and are fixed to the upper support leg (3-8).

8. The intelligent adjustment bearing device for bridge rotation construction according to claim 1, characterized in that, The pressure sensor (3-6) is ultra-thin and has the functions of real-time pressure display and over-limit warning.

9. The intelligent adjustment load-bearing device for bridge rotation construction according to claim 1, characterized in that The load-bearing devices (3) are provided in 3 to 4 pieces and are evenly arranged along the slideway system (5) of the horizontal rotation system of the bridge.

10. The intelligent adjustment bearing device for bridge rotation construction according to claim 9, characterized in that, Each load-bearing device (3) provides 1000-2000 tons of vertical support force, bearing 10%-20% of the total rotation tonnage of the bridge.

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