Bridge slope adjustment jacking device based on pneumatic isolation and construction method

Abstract

The invention provides a bridge slope adjusting jacking device based on pneumatic isolation and a construction method, and relates to the technical field of bridge engineering, the bridge slope adjusting jacking device is used for being arranged in a gap between a cover beam and a beam body, the bridge slope adjusting jacking device comprises multiple sets of inflatable isolation units, and the multiple sets of inflatable isolation units are longitudinally arranged between the cover beam and the beam body; the inflatable isolation unit comprises an inflatable jacking module, a pressure monitoring module and an automatic pressure regulating system, the automatic pressure regulating system is connected with the inflatable jacking module, and the pressure monitoring module is connected between the inflatable jacking module and the automatic pressure regulating system. The invention relates to a bridge slope-adjusting jacking device based on pneumatic isolation and a construction method, and aims to solve the problem of inclination of a cover beam caused by horizontal force transmission generated by extension of a beam body in the traditional slope-adjusting jacking process, and the device realizes effective isolation of horizontal force by arranging a plurality of groups of inflatable isolation units between the cover beam and the beam body, so that the safety of the cover beam is improved. Therefore, the offset of the capping beam in the slope adjusting and jacking process can be controlled within a small range.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge engineering. Specifically, it relates to a bridge slope adjustment and jacking device based on pneumatic isolation and a construction method, which is applicable to the longitudinal slope adjustment project of highway and railway bridges. Background Art

[0002] In the slope adjustment and jacking construction of existing bridges, there are many problems with traditional jacking methods. For example, the change trajectory of the bridge deck slope is a rigid body rotation motion of the beam body around a fixed axis. Intuitively, it is reflected that the projection of the beam body becomes longer. When directly jacking the capping beam for bridge slope adjustment and jacking, the increase in the beam body projection will transmit horizontal force due to the contact between the bearing and the beam body, thus driving the horizontal movement of the top of the capping beam. This situation will cause the capping beam to tilt and not correspond to the lower pier column, making it impossible to complete the connection.

[0003] In the prior art, although sliding bearings or steel backing plates are used to isolate horizontal forces, these methods have problems such as large friction coefficients, low adjustment accuracy, and complex equipment. Especially when the jacking height of the capping beam exceeds 50 mm, the existing devices are difficult to effectively eliminate the transmission of horizontal forces, resulting in the tilt angle of the capping beam exceeding the allowable deviation of 0.5°. Therefore, we make improvements and propose a bridge slope adjustment and jacking device based on pneumatic isolation and a construction method. Summary of the Invention

[0004] The present invention aims to overcome the problem of capping beam tilt caused by horizontal force transmission in the prior art, and provides a bridge slope adjustment and jacking device based on pneumatic isolation and a construction method to ensure the stability of the capping beam during the jacking process and the connection accuracy with the pier column meets the design requirements.

[0005] To achieve the above-mentioned invention purpose, the present invention provides a bridge slope adjustment and jacking device based on pneumatic isolation and a construction method to improve the above problems.

[0006] Specifically, this application is as follows:

[0007] A bridge slope adjustment and jacking device based on pneumatic isolation, which is used to be arranged in the gap between the capping beam and the beam body, includes multiple groups of inflatable isolation units. The multiple groups of inflatable isolation units are longitudinally arranged between the capping beam and the beam body. The inflatable isolation unit includes an inflatable jacking module, a pressure monitoring module, and an automatic pressure regulating system. The automatic pressure regulating system is connected to the inflatable jacking module, and the pressure monitoring module is connected between the inflatable jacking module and the automatic pressure regulating system.

[0008] As a preferred technical solution of this application, the inflatable jacking module includes several pneumatic devices. The several pneumatic devices are arranged in a plum blossom shape, and the center distance between adjacent two pneumatic devices is 1.2 - 1.5 times the diameter of the pneumatic device. The pneumatic device is an airbag or a pneumatic jack.

[0009] As a preferred technical solution of the present application, the compression ratio of the pneumatic device is 15%-30%.

[0010] As a preferred technical solution of the present application, the automatic pressure regulating system includes an air pump group, the air pump group is connected with a solenoid valve, the solenoid valve is connected with a three-way pipe, and the other two paths of the three-way pipe are respectively connected with an inflation and lifting module and a pressure monitoring module.

[0011] As a preferred technical solution of the present application, a PID controller is connected between the solenoid valve and the pressure monitoring module, and the PID controller is connected with the air pump group.

[0012] As a preferred technical solution of the present application, the bursting pressure of the pneumatic device is ≥5 MPa.

[0013] As a preferred technical solution of the present application, a plurality of the pneumatic devices are all connected with a first connecting pipe, a second connecting pipe is communicated between the plurality of the first connecting pipes, and the second connecting pipe is connected with the solenoid valve through a three-way pipe.

[0014] As a preferred technical solution of the present application, protective frames are arranged on the outer surfaces of a plurality of the pneumatic devices, and the plurality of protective frames are connected together.

[0015] A construction method using a bridge slope adjustment and lifting device based on pneumatic isolation includes the following steps:

[0016] a. Arrange multiple rows of inflation and lifting modules longitudinally along the beam body on the top surface of the capping beam and conduct initial inflation;

[0017] b. Start the automatic pressure regulating system, monitor the pressure of the pneumatic device in real time and dynamically adjust it to ensure that the pressure difference is within 5%;

[0018] c. Start the hydraulic synchronous control system to lift the capping beam, and at the same time monitor the position of the capping beam through the laser positioning system;

[0019] d. After the lifting is completed, verify the connection accuracy between the capping beam and the pier column through the BIM model, remove the inflation and lifting modules and clean the site.

[0020] As a preferred technical solution of the present application, a displacement sensor is further arranged between the capping beam and the beam body to monitor the relative displacement between the capping beam and the beam body in real time to ensure the horizontal force isolation effect.

[0021] Compared with the prior art, the beneficial effects of the present invention:

[0022] In the solution of the present application:

[0023] The present invention relates to a bridge slope adjustment and jacking device based on pneumatic isolation and a construction method, aiming to solve the problem of the capping beam tilting caused by the horizontal force transmission during the traditional slope adjustment and jacking process due to the elongation of the beam body. The device arranges multiple groups of inflatable isolation units between the capping beam and the beam body to effectively isolate the horizontal force and transmit the vertical force at the same time, so that the offset of the capping beam during the slope adjustment and jacking process can be controlled within a small range, meeting the requirements of the jacking construction of long-span box girders, and greatly improving the construction efficiency; the automatic pressure regulating system can automatically and dynamically adjust the pressure of the inflatable jacking module, reducing manual intervention. Description of the Drawings

[0024] Figure 1 It is a schematic diagram of the bridge slope adjustment and jacking device based on pneumatic isolation provided by this application;

[0025] Figure 2 It is a schematic diagram of the structure of the inflatable jacking module provided by this application;

[0026] Figure 3 It is a schematic diagram of the structure with the airbag placed vertically provided by this application;

[0027] Figure 4 Provided by this application Figure 3 Bottom view structure schematic diagram;

[0028] Figure 5 It is a schematic diagram when the bridge slope adjustment and jacking device based on pneumatic isolation provided by this application is in use;

[0029] Figure 6 It is a schematic diagram when the inflatable jacking module is arranged between the capping beam and the beam body provided by this application;

[0030] Figure 7 It is a schematic diagram when the inflatable jacking module is arranged on the capping beam provided by this application;

[0031] Figure 8 It is a bottom view structure schematic diagram of the beam body provided by this application;

[0032] Figure 9 It is a schematic diagram of the structure with the airbag arranged horizontally provided by this application.

[0033] Labels in the figure:

[0034] 1. Inflatable jacking module; 101. Pneumatic device; 102. First connecting pipe; 103. Second connecting pipe; 104. Protection frame; 2. Solenoid valve; 3. Air pump group; 4. Pressure monitoring module; 5. PID controller; 6. Capping beam; 7. Beam body; 8. Pier column; 9. Raft foundation; 10. Pile foundation; 11. Bearing. Detailed Embodiments

[0035] To enable those skilled in the art to better understand the solution of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention 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 without creative efforts shall fall within the protection scope of the present invention.

[0036] It should be noted that, without conflict, the embodiments in the present invention and the features and technical solutions in the embodiments can be combined with each other.

[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0038] Example 1, please refer to Figures 1 - 7 , a bridge slope adjustment and jacking device based on pneumatic isolation, which is used to be arranged at the gap between the capping beam 6 and the beam body 7, and includes multiple groups of inflatable isolation units. The multiple groups of inflatable isolation units are longitudinally arranged between the capping beam 6 and the beam body 7. The inflatable isolation unit includes an inflatable jacking module 1, a pressure monitoring module 4 and an automatic pressure regulating system. The automatic pressure regulating system is connected to the inflatable jacking module 1, and the pressure monitoring module 4 is connected between the inflatable jacking module 1 and the automatic pressure regulating system. By arranging multiple groups of inflatable isolation units between the capping beam 6 and the beam body 7, effective isolation of the horizontal force is achieved, and at the same time, the vertical force is transmitted, so that the offset of the capping beam 6 during the slope adjustment and jacking process can be controlled within a small range. The pneumatic device 101 adopts an aramid fiber-reinforced chloroprene rubber composite material, which has high strength and durability.

[0039] Further, as Figures 2 - 4 shown, the inflatable jacking module 1 includes a number of pneumatic devices 101, and the number of pneumatic devices 101 is arranged in a plum blossom shape. The center distance between two adjacent pneumatic devices 101 is 1.2 - 1.5 times the diameter of the pneumatic device 101; the pneumatic devices 101 arranged in a plum blossom shape can provide uniform support for the beam body 7. The reasonable setting of the center distance ensures that each pneumatic device 101 can fully exert its jacking effect during operation without interfering with each other, so that the jacking force can be evenly transmitted to each part of the beam body 7, maintaining the balance and stability of the beam body 7. Taking a long-span box girder as an example, during the jacking process, the pneumatic devices 101 arranged in a plum blossom shape make the deviation of the jacking force received by each point smaller, ensuring the integrity and stability of the structure of the beam body 7;

[0040] The pneumatic device 101 is an airbag or a pneumatic jack. Utilizing the low horizontal shear stiffness characteristics of the airbag or the pneumatic jack, effective isolation of the horizontal force can be achieved; as Figure 3and Figure 9 As shown, when the pneumatic device 101 is an airbag, the airbag can be horizontally placed or vertically placed. Whether it is horizontal or vertical, the airbag provides an upward lifting force when inflated;

[0041] It should be noted that when the airbag is vertically placed, multiple airbags are arranged in a plum blossom shape as shown in Figure 3 . If it is horizontally placed, it is not arranged in a plum blossom shape but is horizontally arranged as shown in Figure 9 . The airbag has a small stiffness and a strong ability to adapt to deformation, and can effectively isolate the horizontal force.

[0042] Furthermore, the compression ratio of the pneumatic device 101 is 15% - 30%. The compression ratio of 15% - 30% enables the pneumatic device 101 to have good elastic deformation ability, and it can be moderately compressed under pressure, thereby effectively buffering the pressure.

[0043] Furthermore, as shown in Figure 1 , the automatic pressure regulating system includes an air pump group 3. The air pump group 3 is connected to a solenoid valve 2, the solenoid valve 2 is connected to a three-way pipe, and the other two paths of the three-way pipe are respectively connected to the inflation and lifting module 1 and the pressure monitoring module 4, so that the pressure monitoring module 4 can monitor the air pressure of the inflation and lifting module 1 in real time. The pressure monitoring module 4 uses a pressure sensor; the air pump group 3 serves as a power source to provide a continuous and stable air source for the inflation of the inflation and lifting module 1. The solenoid valve 2 precisely controls the on and off of the gas according to the system command. The pressure sensor captures the air pressure data of the pneumatic device 101 in real time. Each component works together, enabling the system to quickly and accurately adjust the air pressure of the pneumatic device 101 and ensuring the smooth progress of the slope adjustment and lifting operation.

[0044] Furthermore, as shown in Figure 1 , a PID controller 5 is connected between the solenoid valve 2 and the pressure monitoring module 4, and the PID controller 5 is connected to the air pump group 3. The solenoid valve 2 is also connected to an exhaust pipe to perform an exhaust operation after use or when it is necessary to reduce the air pressure of the pneumatic device 101. With its powerful algorithm and precise control ability, the PID controller 5 can finely adjust the air pump group 3 and the solenoid valve 2 based on the data feedback by the pressure monitoring module 4, realizing high-precision control of the air pressure of the pneumatic device 101. The setting of the exhaust pipe provides a way for the pneumatic device 101 to reduce pressure after use and adjust the air pressure according to actual needs during construction.

[0045] Furthermore, the bursting pressure of the pneumatic device 101 ≥ 5MPa. When the pneumatic device 101 is an airbag, the airbag is made of aramid fiber-reinforced neoprene composite material. The aramid fiber-reinforced neoprene composite material has excellent performance under different working conditions and a long service life.

[0046] Further, a plurality of pneumatic devices 101 are all connected with first connecting pipes 102. A second connecting pipe 103 is communicated between the plurality of first connecting pipes 102. The second connecting pipe 103 is connected to the electromagnetic valve 2 through a tee pipe. The first connecting pipes 102 connect each pneumatic device 101 with the second connecting pipe 103, and the second connecting pipe 103 is connected to the electromagnetic valve 2 through a tee pipe, forming an orderly gas transmission path. This connection method enables the gas to be evenly distributed to each pneumatic device 101 under the control of the system, ensuring the synchronism and stability of the slope adjustment and jacking operation.

[0047] Further, as Figure 2 shown, protective frames 104 are arranged on the outer surfaces of a plurality of pneumatic devices 101. The plurality of protective frames 104 are connected together. Physical protection is provided for the pneumatic devices 101 through the protective frames 104, which can effectively resist collisions, scratches and other damages of various external objects that may occur during the construction process, reduce the failure rate of the pneumatic devices 101 caused by physical damage, extend the service life of the pneumatic devices 101, and reduce the replacement cost.

[0048] Embodiment 2, as Figures 5 - 8 shown, a construction method using a bridge slope adjustment and jacking device based on pneumatic isolation includes the following steps:

[0049] a. Arrange multiple rows of inflatable jacking modules 1 longitudinally along the top surface of the capping beam 6 and perform initial inflation; specifically, arrange multiple rows of inflatable jacking modules 1 longitudinally along the top surface of the capping beam 6. Use the air pump group 3 to perform initial inflation on the pneumatic devices 101 through the electromagnetic valve 2. After the pneumatic devices 101 are inflated, the beam body 7 will be jacked up, causing the beam body 7 to be separated from the bearing 11 on the capping beam 6; by arranging the inflatable jacking modules 1 and using the air pump group 3 and the electromagnetic valve 2 to perform an orderly initial inflation operation, the pneumatic devices 101 expand evenly, generating an upward jacking force to lift the beam body 7 smoothly, realizing the separation of the beam body 7 from the bearing 11. The longitudinal arrangement method of the multiple rows of inflatable jacking modules 1 can better adapt to the structural characteristics of the beam body 7 and ensure the force balance of the beam body 7 during the slope adjustment and jacking process;

[0050] b. Start the automatic pressure regulating system, monitor the pressure of the pneumatic device 101 in real time and adjust it dynamically to ensure that the pressure difference is within 5%; specifically, the pressure monitoring module 4 monitors the pressure of the pneumatic device 101 in real time, transmits the data to the PID controller 5 and adjusts it dynamically. When the pressure of the pneumatic device 101 is small, the PID controller 5 controls the air pump group 3 and the solenoid valve 2 to start, so that the air pump group 3 inflates the pneumatic device 101 through the solenoid valve 2. If the pressure is too high, the solenoid valve 2 exhausts to ensure the pressure difference; during the entire jacking process, it can continuously and stably ensure that the pressure of the pneumatic device 101 is in an ideal state, effectively maintaining the smoothness and accuracy of the jacking of the beam body 7, strictly controlling the pressure difference within 5%, and effectively preventing serious safety accidents such as the inclination, shaking or collapse of the beam body 7 caused by uneven pressure of the pneumatic device 101. At the same time, the mechanism of dynamically adjusting the pressure can adapt to the change of the pressure demand of the pneumatic device 101 in different construction stages, improving the flexibility and adaptability of the construction; that is, the PID controller 5 can quickly trigger the air pump group 3 to supplement pressure or the solenoid valve 2 to exhaust, quickly restore the pressure balance, and ensure the continuity and stability of the jacking process.

[0051] c. Start the hydraulic synchronous control system to perform the jacking operation on the capping beam 6, and monitor the position of the capping beam 6 through the laser positioning system; specifically, a jack is set between the bearing platform 9 and the capping beam 6, and the capping beam 6 is jacked up by the jack to separate the capping beam 6 from the pier column 8, and the pier column 8 is constructed to realize the elevation or lowering of the pier column 8. After the construction is completed, the jack retracts to connect and reset the capping beam 6 and the pier column 8. Then, when the beam body 7 falls, the pneumatic device 101 effectively isolates the horizontal force and transmits the vertical force at the same time, maintaining the stable jacking operation of the structure and monitoring the position of the capping beam 6. The hydraulic synchronous control system and the laser positioning system are both prior arts and will not be elaborated in this application;

[0052] The jacking process cooperates with the automatic pressure regulating system, the hydraulic synchronous control system, etc., greatly improving the construction efficiency. In the entire bridge slope adjustment and jacking project, it can effectively reduce the construction time, reduce the construction cost, including labor, equipment rental and other expenses, and at the same time reduce the long-term impact on traffic and can quickly restore the normal traffic of the bridge;

[0053] d. After the jacking is completed, verify the connection accuracy between the capping beam 6 and the pier column 8 through the BIM model, remove the inflatable jacking module 1 and clean the site; the BIM model can display the bridge structure in a three-dimensional form, and the construction personnel can clearly observe the connection between the capping beam 6 and the pier column 8 through the model, and use the measurement and analysis tools of the model to accurately detect the connection accuracy.

[0054] The bridge includes pile foundations 10, on which a bearing platform 9 is provided. Multiple pier columns 8 are provided on the top of the bearing platform 9. A capping beam 6 is connected between the tops of the multiple pier columns 8. A bearing 11 is provided on the capping beam 6, and the bearing 11 is connected to a beam body 7. A bridge deck is laid on the beam body 7.

[0055] The present invention can significantly improve the horizontal force isolation efficiency, control the offset of the capping beam 6 within the range of ±2 mm, and the vertical bearing capacity reaches 5000 kN / ㎡, which is suitable for the slope adjustment and jacking requirements of long-span box girders. The construction efficiency is increased by 40%, and the slope adjustment and jacking period of a single pier column 8 is shortened to 3 - 5 hours. It demonstrates excellent performance and advantages in multiple key aspects such as horizontal force isolation, vertical bearing capacity, applicable scope, and construction efficiency. The high-efficiency horizontal force isolation efficiency effectively avoids problems such as the offset and inclination of the capping beam 6 caused by the action of horizontal forces, ensuring the stability and safety of the bridge structure. The strong vertical bearing capacity enables it to easily meet the slope adjustment and jacking requirements of long-span box girders, broadening the application scope of the bridge slope adjustment and jacking technology.

[0056] In various bridge jacking projects, in the face of beam bodies 7 with different weights and structures, this application can provide a stable and reliable jacking force to ensure the smooth jacking of the beam body 7, broadening the application scope of the bridge slope adjustment and jacking technology in bridge projects of different scales. Whether it is a local adjustment of a small bridge or an overall slope adjustment of a large bridge, it can play a good jacking role.

[0057] Furthermore, a displacement sensor is also provided between the capping beam 6 and the beam body 7 to real-time monitor the relative displacement between the capping beam 6 and the beam body 7, ensuring the horizontal force isolation effect.

[0058] The bridge needs to be adjusted in slope. Slope adjustment means raising or lowering the original slope to meet the actual renovation needs. When the beam body 7 is raised or lowered, it will cause hard stress between the beam body 7 and the bearing 11 on the capping beam 6, resulting in an axis deviation between the capping beam 6 and the beam body 7, affecting the structural safety of the entire bridge. The beam body 7 is connected to the capping beam 6 through the bearing 11, so there is a gap between the bottom and the capping beam 6. The inflatable jacking module 1 is placed in the gap between the capping beam 6 and the beam body 7. After the pneumatic device 101 punches, the beam body 7 is jacked up. As long as the beam body 7 is separated from the bearing 11 on the capping beam 6, for example, there is a gap of 5 - 10 mm between the beam body 7 and the bearing 11. After the construction is completed, the pier column 8 and the capping beam 6 are reset. Then, when the beam body 7 falls, the pneumatic device 101 realizes effective isolation of the horizontal force and at the same time transmits the vertical force to maintain the stability of the structure.

[0059] The changing trajectory of the bridge deck slope is a rigid body rotational motion of the beam body 7 around a fixed axis. As the height of the beam body 7 increases, there will be a horizontal movement at the same time. The intuitive reflection is that the projection of the beam body 7 becomes longer. When directly jacking up the capping beam 6 for bridge slope adjustment and jacking, the horizontal movement of the beam body 7 will transfer the horizontal force due to the contact between the bearing 11 and the beam body 7, thus driving the horizontal movement at the top of the capping beam 6. This situation will cause the capping beam 6 to tilt and not correspond to the lower pier column 8, making it impossible to complete the connection. The present application can effectively solve this problem through the above solution.

[0060] Example 3: For the slope adjustment and jacking construction of a 30m-span prestressed concrete continuous beam bridge, the jacking height of the capping beam 6 is 120mm, and the longitudinal slope is adjusted by 2%. 8 inflatable jacking modules 1 are used, and the initial inflation pressure of the pneumatic device 101 is 0.8MPa. Through the BIM model rehearsal, it is determined that the air compression of the pneumatic device 101 is controlled within 22% ± 3%. During the construction process, the real-time monitoring shows that the maximum horizontal displacement is 1.8mm, and the inclination of the capping beam 6 is 0.12‰, meeting the design requirements.

[0061] Example 4: For the slope adjustment and jacking construction of a 50m-span continuous box girder bridge, the jacking height of the capping beam 6 is 150mm, and the longitudinal slope is adjusted by 3%. 12 inflatable jacking modules 1 are used, and the initial inflation pressure is 1.0MPa. The pressure of the pneumatic device 101 is dynamically adjusted to ensure that the pressure difference is kept within 5%. During the construction process, the offset of the capping beam 6 is controlled within the range of ±1.5mm, and the inclination is 0.1‰, and the construction period is shortened to 4 hours.

[0062] In the present invention, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0063] Obviously, the embodiments described above are only a part of the embodiments of the present invention, rather than all embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing specific embodiments, or perform equivalent replacements on some of the technical features. Any equivalent structure directly or indirectly using the content of the specification and drawings of the present invention in other related technical fields is similarly within the scope of the patent protection of the present invention.

Claims

1. A bridge slope adjustment and lifting device based on pneumatic isolation, used for being arranged in the gap between a cap beam (6) and a beam body (7), characterized in that: The invention comprises a plurality of inflatable isolation units, wherein the plurality of inflatable isolation units are longitudinally arranged between a cap beam (6) and a beam body (7), wherein the inflatable isolation units comprise an inflatable lifting module (1), a pressure monitoring module (4) and an automatic pressure regulating system, wherein the automatic pressure regulating system is connected to the inflatable lifting module (1), and the pressure monitoring module (4) is connected between the inflatable lifting module (1) and the automatic pressure regulating system.

2. According to a bridge slope adjustment and lifting device based on pneumatic isolation as described in claim 1, the inflatable lifting module (1) includes a plurality of pneumatic devices (101), the plurality of pneumatic devices (101) are arranged in a plum blossom shape, the center distance between two adjacent pneumatic devices (101) is 1.2-1.5 times the diameter of the pneumatic device (101), and the pneumatic device (101) is an airbag or a pneumatic jack.

3. According to the bridge slope adjustment and jacking device based on pneumatic isolation as described in claim 2, the compression rate of the pneumatic device (101) is 15%-30%.

4. According to a bridge slope adjustment and jacking device based on pneumatic isolation as described in claim 1 or 3, the automatic pressure regulation system includes an air pump group (3), the air pump group (3) is connected to a solenoid valve (2), the solenoid valve (2) is connected to a three-way pipe, and the other two routes of the three-way pipe are respectively connected to the inflation jacking module (1) and the pressure monitoring module (4).

5. According to the bridge slope adjustment and jacking device based on pneumatic isolation described in claim 4, a PID controller (5) is connected between the solenoid valve (2) and the pressure monitoring module (4), and the PID controller (5) is connected to the air pump group (3).

6. According to the bridge slope adjustment and jacking device based on pneumatic isolation as described in claim 2, the bursting pressure of the pneumatic device (101) is ≥5MPa.

7. According to the bridge slope adjustment and lifting device based on pneumatic isolation as described in claim 2, several of the pneumatic devices (101) are connected to a first connecting pipe (102), several of the first connecting pipes (102) are connected to each other by a second connecting pipe (103), and the second connecting pipe (103) is connected to the solenoid valve (2) through a three-way pipe.

8. According to the bridge slope adjustment and jacking device based on pneumatic isolation as described in claim 7, the outer surfaces of several pneumatic devices (101) are provided with protective frames (104), and several protective frames (104) are connected together.

9. A construction method, using the bridge slope adjustment and lifting device based on pneumatic isolation according to any one of claims 1 to 8, characterized in that: The following steps are involved: a. Arrange multiple rows of inflatable lifting modules (1) longitudinally along the top surface of the cap beam (6) and the beam body (7), and perform initial inflation; b. Start the automatic pressure regulating system, monitor the pressure of the pneumatic device (101) in real time and adjust it dynamically to ensure that the pressure difference is within 5%; c. Start the hydraulic synchronous control system to lift the cap beam (6) and monitor the position of the cap beam (6) through the laser positioning system; d. After the lifting is completed, the connection accuracy between the cap beam (6) and the pier column (8) is verified through the BIM model, the inflatable lifting module (1) is removed and the site is cleaned up.

10. The construction method according to claim 9, characterized in that: It also includes arranging a displacement sensor between the cap beam (6) and the beam body (7) to monitor the relative displacement of the cap beam (6) and the beam body (7) in real time to ensure the horizontal force isolation effect.

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