Demolition-free jacking construction method for old bridge

Abstract

The invention relates to a dismantling-free jacking construction method for an old bridge, and relates to the field of bridge jacking, in the process that a jack jacks a bridge, the height between an abutting seat and a jacking box is obtained through a detection assembly, and the height value is displayed on a touch screen; data such as the height and the preset jacking height of a bridge are analyzed and processed through a PLC, and the telescopic length adjustment value of a jack piston rod and the return adjustment value of a roller shutter piece are obtained and displayed on a touch screen; a dismounting assembly is controlled to dismount a corresponding fixing assembly on the roller shutter piece, and the roller shutter piece extending out of the jacking box is returned into the jacking box in cooperation with a rolling assembly; and after the height between the abutting seat and the jacking box reaches the preset height, the PLC controls the jacks to work according to the adjustment value until the bridge reaches the preset horizontal height, constructors do not need to adjust the lifting height of the jacks at the two ends of the bridge according to personal experience, and the effect of improving the construction efficiency is achieved.

Description

Technical Field

[0001] The present application relates to the field of bridge jacking, and in particular to a method for jacking up old bridges without requiring demolition. Background Art

[0002] Bridge bearings are important components connecting the superstructure and substructure of a bridge. They are located between the bridge and the pedestal. Their main function is to reliably transfer the load and deformation (displacement and rotation) borne by the superstructure of the bridge to the bridge piers.

[0003] After long-term use, bridges experience a reduction in their load-bearing life, leading to aging of their bearings. This can lead to engineering defects such as shear deformation failure and displacement, compromising their safety. Therefore, bridge bearings need to be replaced. Before replacing bearings, the bridge is typically raised using a jacking device, the bearings are replaced, and the bridge is then returned to its original position.

[0004] Regarding the above-mentioned related technologies, the inventor believes that the following defects exist: in the process of lifting the bridge with the jacking device, the staff needs to repeatedly adjust the lifting height of the jacks at the two beam ends of the bridge based on personal experience in order to keep the bridge level and meet the lifting height requirements, which reduces the construction efficiency. Summary of the Invention

[0005] In order to improve the construction efficiency during the construction process, the present application provides a method for jacking up old bridges without dismantling them.

[0006] This application provides a method for jacking up old bridges without demolition, which adopts the following technical solutions:

[0007] A method for jacking up an old bridge without dismantling it comprises the following steps:

[0008] Conduct a survey of the construction environment around the two beam ends of the bridge to be demolished to eliminate uncontrollable factors;

[0009] Distribution beams are set up on both beam ends of the bridge, and two opposite distribution beams are set up on the bottom wall of one end of the bridge;

[0010] Support frames are set up on the piers below the two beam ends of the bridge, and support frames are set up on the opposite side walls of each pier, and the support frames are arranged opposite to the distribution beam in the height direction;

[0011] The construction workers climbed into the support frame and fixed the jacking box inside the support frame;

[0012] The jack is started by triggering the touch screen on the jacking box. The piston rod of the jack drives the rolling curtain to rise and fall synchronously through the abutment seat. At the same time, the winding assembly in the jacking box cooperates with the jack to rewind the rolling curtain.

[0013] The construction workers control the operation of several fixing components through the touch screen to fix the roller shutter parts extending out of the jacking box;

[0014] Construction workers control the detection component through the touch screen. The detection component obtains the height value between the abutment seat and the jacking box and displays the height value on the touch screen. The jacking box is equipped with a PLC controller, which analyzes and processes data such as the height value and the preset jacking height of the bridge, and obtains the adjustment value of the jack piston rod extension length and the roller shutter member return position adjustment value, and displays them on the touch screen.

[0015] The construction workers control the disassembly assembly through the touch screen to remove the corresponding fixing assembly on the rolling curtain member, and cooperate with the reeling assembly to retract the rolling curtain member that extends out of the jacking box into the jacking box; until the height value between the abutment seat and the jacking box reaches the preset height, the PLC controller controls the jack to operate according to the adjustment value until the bridge reaches the preset horizontal height;

[0016] Complete the bridge jacking construction work.

[0017] Optionally, the detection component includes a distance sensor, which is arranged on the bottom wall of the abutment seat to detect the distance between the abutment seat and the top wall of the lifting box, and the distance sensor is electrically connected to the PLC controller.

[0018] Optionally, the rolling curtain member includes a plurality of curtain pieces, and the plurality of curtain pieces are arranged in sequence along the height direction of the pier, and two adjacent curtain pieces are movably connected to each other, and the curtain piece at the top is connected to the abutment seat.

[0019] Optionally, the fixing component includes a rubber sleeve, which is arranged between the opposite side walls of two adjacent curtain pieces. The rubber sleeve is filled with an electrorheological fluid layer. A power supply battery for providing electrical energy to the electrorheological fluid layer is provided in the side wall of the curtain piece. The electrorheological fluid layer changes from liquid to solid when energized.

[0020] Optionally, the top and bottom walls of the rubber sleeve are both provided with a first permanent magnet, the opposite side walls of two adjacent curtain pieces are both provided with a first electromagnet, the power supply battery is used to provide power for the first electromagnet, and the first permanent magnet is magnetically connected to the first electromagnet.

[0021] Optionally, the disassembly assembly includes a horizontal electric cylinder, a vertical electric cylinder and a finger electric cylinder, the horizontal electric cylinder is arranged on the inner wall of the lifting box, the piston rod of the horizontal electric cylinder is connected to the cylinder body of the finger electric cylinder, the opposite side walls of the two jaws of the finger electric cylinder are provided with a first serration, the side wall of the rubber sleeve is provided with a groove for inserting the two jaws of the finger electric cylinder, the groove wall is provided with a second serration opposite to the first serration, the cylinder body of the vertical electric cylinder is arranged on the top wall of the lifting box, the piston rod of the vertical electric cylinder extends into the lifting box and is provided with a push plate for pushing the rubber sleeve into the lifting box, and the lifting box is provided with a storage component for storing the rubber sleeve.

[0022] Optionally, the storage member includes a guide plate and a storage box, the guide plate is tiltedly arranged on the inner wall of the lifting box, the guide plate is provided with a material guide channel, the storage box is arranged on the side wall of the lifting box, the lower end of the guide plate passes through the side wall of the lifting box and is connected to the storage box, and the piston rod of the vertical electric cylinder pushes the rubber sleeve into the guide plate through the push plate.

[0023] Optionally, the side wall of the jacking box is hingedly provided with an inspection door.

[0024] Optionally, the winding assembly includes a winding motor and a winding shaft, the winding motor is arranged in a lifting box, the drive shaft of the winding motor is coaxially fixedly connected to the winding shaft, the rolling curtain member is fixedly installed on the winding shaft, and the top wall of the lifting box is provided with a movable opening for the curtain piece to pass through.

[0025] Optionally, a second permanent magnet is embedded in the side wall of the curtain piece, and a second electromagnet is embedded in the side wall of the movable opening. The height of the second permanent magnet is consistent with the height of the curtain piece, and the second electromagnet is magnetically connected to the second permanent magnet.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. During the lifting process, the distance sensor, PLC controller, proximity switch, and touch screen work together to automatically adjust the lifting height of the jack. This eliminates the need for construction workers to rely on their own experience to adjust the lifting height of the two beam ends of the bridge, saving time and effort and increasing construction efficiency.

[0028] 2. When the height of the jack piston rod extending out of the jacking box needs to be reduced, the rubber sleeve on the curtain piece that needs to be retreated into the jacking box can be removed through the cooperation of the horizontal electric cylinder, vertical electric cylinder, and finger electric cylinder to facilitate the rewinding of the curtain piece;

[0029] 3. By fixing and connecting several curtain sheets to stably support the abutment seat, it helps to disperse the impact pressure of the jack piston rod, thereby helping to improve safety during the construction process;

[0030] 4. When the electrorheological fluid layer is energized, it changes from liquid to solid, which helps to strengthen the stability of the fixed connection between two adjacent curtain blades, helps to prevent the curtain blades from rotating, and helps to improve safety during the construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the overall structure of the bridge jacking system in an embodiment of the present application.

[0032] Figure 2 A schematic diagram showing the specific structure of the positional relationship between the lifting box, rolling shutter component, jack and abutment seat.

[0033] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure.

[0034] Figure 4 for Figure 3 A partial enlarged view of point A in the middle.

[0035] Figure 5 for Figure 4 A partial enlarged view of point B in the middle.

[0036] Figure 6 It is a specific structural diagram that reflects the positional relationship between the finger cylinder and the rubber sleeve.

[0037] Figure 7 A schematic diagram showing the specific structure of the positional relationship between the lifting box, guide plate and storage box.

[0038] Explanation of the accompanying reference numerals: 1. Bridge pier; 2. Bridge; 3. Distribution beam; 4. Support frame; 5. Lifting box; 6. Touch screen; 7. Jack; 8. Rolling curtain member; 81. Curtain blade; 9. Winding assembly; 91. Winding motor; 92. Winding shaft; 10. Fixing assembly; 101. Rubber sleeve; 102. Electrorheological fluid layer; 11. Distance sensor; 12. PLC controller; 13. Disassembly assembly; 131. Horizontal electric cylinder; 132. Vertical electric cylinder; 133. Finger electric cylinder; 134. Groove; 135. Guide plate; 136. Storage box; 14. First permanent magnet; 15. First electromagnet; 16. Second permanent magnet; 17. Second electromagnet; 18. Abutment seat; 19. Proximity switch; 20. Detection hole; 21. Power supply battery; 22. Top hook; 23. Bottom hook; 24. Third electromagnet; 25. Third permanent magnet. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-7 This application is described in further detail.

[0040] The embodiment of the present application discloses a method for jacking up an old bridge 2 without dismantling. Figure 1This solution is based on a jacking system for bridge 2. The jacking system includes support beams, protective beams, abutment seats 18, and auxiliary support mechanisms. Support beams are installed on both side end walls of piers 1 at both beam ends of bridge 2. Two protective beams are installed on the bottom walls of both beam ends of bridge 2. The two protective beams correspond to the support beams on both sides of each pier 1 and are arranged in an upper and lower direction.

[0041] Among them, the auxiliary support mechanism includes a jacking box 5 and a jack 7. The jacking box 5 is fixedly installed on the supporting beam. The jack 7 is vertically arranged on the inner bottom wall of the jacking box 5. The piston rod of the jack 7 extends out of the top wall of the jacking box 5 and is connected to the abutment seat 18. The piston rod of the jack 7 is slidingly connected to the top wall of the jacking box 5. When the bridge 2 is lifted, the four jacks 7 under the two beam ends of the bridge 2 are driven to operate synchronously. The jack 7 abuts the bottom wall of the protective beam through the abutment block to achieve the lifting of the bridge 2.

[0042] Reference Figure 1-Figure 3 In order to improve the anti-impact ability of the jack 7, two rows of rolling curtain members 8 are provided on the top wall of the lifting box 5 and on both sides of the jack 7. Each row of rolling curtain members 8 includes a number of curtain pieces 81 arranged in sequence along the vertical direction. The two adjacent curtain pieces 81 are hingedly connected. The curtain pieces 81 at the top of the two rows of rolling curtain members 8 are respectively fixedly connected to the bottom walls of the two sides of the abutment seat 18. Two sets of winding components 9 are respectively provided in the lifting box 5. The winding components 9 include a winding motor 91 and The winding shaft 92 and the winding motor 91 are arranged on the outer wall of the lifting box 5, the driving shaft of the winding motor 91 is coaxially fixedly connected to the winding shaft 92, the rolling curtain member 8 is fixedly installed on the winding shaft 92, and the top wall of the lifting box 5 is provided with a movable opening for the curtain piece 81 to pass through; the winding motor 91 is started, and the winding shaft 92 is rotated to realize the winding or unwinding of the rolling curtain member 8, and the top wall of the lifting box 5 is provided with a movable opening for the curtain piece 81 to pass through, so that the curtain piece 81 can be stably raised and lowered.

[0043] In this embodiment, as the piston rod of the jack 7 extends, the rolling curtain member 8 needs to be unwound so that several curtain pieces 81 extend out of the lifting box 5 as the piston rod of the jack 7 moves, which helps to enhance the anti-punch ability of the jack 7.

[0044] Reference Figure 2-Figure 5 Since several curtain pieces 81 are hingedly connected, in order to successfully disperse the impact pressure of the jack 7, a flexible part is provided between two adjacent curtain pieces 81, and a curing component for hardening the flexible part is provided on the curtain piece 81, which helps to prevent the curtain piece 81 from shaking.

[0045] The flexible component is a rubber sleeve 101, positioned between the opposing sidewalls of two adjacent curtain slats 81. The curing assembly includes an electrorheological fluid layer 102 and a power supply cell 21. The electrorheological fluid layer 102 is filled within the rubber sleeve 101, and the power supply cell 21 is positioned within the sidewalls of the curtain slats 81. The power supply cell 21 is electrically connected to the electrorheological fluid layer 102 via a wire. Upon powering, the electrorheological fluid layer 102 transforms from a liquid to a solid state, thereby enhancing the rubber sleeve 101's resistance to impact and preventing rotation between the two curtain slats 81. In this embodiment, the electrorheological fluid layer 102 comprises a cavity defined within the rubber sleeve 101, filled with an electrorheological fluid. Under normal conditions, the electrorheological fluid is a suspension that undergoes a liquid-to-solid transition under the influence of an electric field. When the applied electric field strength is significantly below a critical value, the electrorheological fluid is liquid; when the electric field strength is significantly above this critical value, it transforms into a solid state.

[0046] Reference Figure 3-Figure 4 A PLC controller 12 is provided on the inner side wall of the lifting box 5, and a proximity switch 19 is provided on the inner top wall of the lifting box 5 and located on the side of the movable opening. A detection hole 20 is provided on the side wall of each curtain piece 81, and the detection hole 20 of the curtain piece 81 can be arranged opposite to the proximity switch 19. When the piston rod of the jack 7 is extended to the preset height range, the PLC controller 12 starts the proximity switch 19 of the jack 7 to emit a light source to the passing curtain piece 81, and the PLC controller 12 can record the number of each passing curtain piece 81. Once the piston rod of the jack 7 moves to the preset optimal height, the PLC controller 12 can find the last recorded curtain piece 81 and start the power supply battery 21 in the curtain piece 81 at the same time to realize the power supply of the electrorheological fluid layer 102, so as to solidify the electrorheological fluid layer 102, thereby enhancing the anti-punching ability of the rubber sleeve 101.

[0047] Reference Figure 3-Figure 4 A distance sensor 11 is provided on the bottom wall of the abutment seat 18, so that as the jack 7 moves, the distance between the abutment seat 18 and the top wall of the jacking box 5 is detected in real time through the distance sensor 11, and the distance is fed back to the PLC controller 12, so that the PLC controller 12 can obtain the actual height value of the extended piston rod of the jack 7 in real time, so that the PLC controller 12 can judge in real time whether the actual height value is within the preset height range, which helps to improve the accuracy of judging the number of the corresponding curtain piece 81 in the movable opening when the jack 7 is lifted. By strengthening the stability of the fixed connection between the two curtain pieces 81, the bearing capacity of the jack 7 is dispersed, which helps to improve the safety of the construction process.

[0048] The rubber sleeve 101 in this embodiment is detachably connected between two adjacent curtain pieces 81. The top and bottom walls of the rubber sleeve 101 are both provided with first permanent magnets 14, and the opposite side walls of the two adjacent curtain pieces 81 are both provided with first electromagnets 15. The battery 21 is used to provide power to the first electromagnets 15 so that the first permanent magnets 14 and the first electromagnets 15 are magnetically connected, thereby fixing the rubber sleeve 101 between the two adjacent curtain pieces 81.

[0049] Reference Figure 3-Figure 7 In order to facilitate the removal of the rubber sleeve 101 during the lifting process, so that the curtain sheet 81 can be driven downward into the lifting box 5 by the reeling assembly 9 for reeling, and the removal of the rubber sleeve 101 can facilitate the personnel to adjust the lifting height of the jack 7. In this embodiment, the side wall of the lifting box 5 is provided with a disassembly assembly 13 for removing the rubber sleeve 101.

[0050] The disassembly component 13 includes a horizontal electric cylinder 131, a vertical electric cylinder 132 and a finger electric cylinder 133. The horizontal electric cylinder 131 is arranged on the inner wall of the lifting box 5. The piston rod of the horizontal electric cylinder 131 is connected to the cylinder body of the finger electric cylinder 133. The opposite side walls of the two clamping jaws of the finger electric cylinder 133 are provided with a first serration. The side wall of the rubber sleeve 101 is provided with a groove 134 for the two clamping jaws of the finger electric cylinder 133 to insert. The groove wall of the groove 134 can be provided with a second serration opposite to the first serration (not shown in the figure). The cylinder body of the vertical electric cylinder 132 is arranged on the top wall of the lifting box 5. The piston rod of the vertical electric cylinder 132 extends into the lifting box 5 and is provided with a push plate for pushing the rubber sleeve 101 into the lifting box 5. The lifting box 5 is provided with a storage component for storing the rubber sleeve 101.

[0051] The finger electric cylinder 133 is driven by the horizontal electric cylinder 131 to move toward the rubber sleeve 101 so that the two clamping claws of the finger electric cylinder 133 are extended into the two grooves 134. The two clamping claws of the finger electric cylinder 133 are close to each other to clamp the rubber sleeve 101. At this time, the magnetic connection between the rubber sleeve 101 and the two adjacent curtain pieces 81 is cut off. Then, the horizontal electric cylinder 131 can be used to drive the rubber sleeve 101 to move to the bottom of the vertical cylinder. At this time, the two clamping claws of the finger electric cylinder 133 are extended from the grooves 134, so that the rubber sleeve 101 can be removed into the storage component by the vertical electric cylinder 132.

[0052] Reference Figure 4 and Figure 7The storage part includes a guide plate 135 and a storage box 136. The guide plate 135 is tilted on the inner wall of the lifting box 5. A material guide channel is provided on the guide plate 135. The storage box 136 is arranged on the side wall of the lifting box 5. The lower end of the guide plate 135 passes through the side wall of the lifting box 5 and is connected to the storage box 136. The piston rod of the vertical electric cylinder 132 pushes the rubber sleeve 101 into the material guide channel in the guide plate 135 through the push plate. At this time, the rubber sleeve 101 can be introduced into the storage box 136 through the tilted storage box 136.

[0053] In this embodiment, a side wall of the jacking box 5 is hingedly provided with an inspection door, so that construction workers can assemble the rubber sleeve 101 between two adjacent curtain sheets 81 according to on-site construction needs.

[0054] Reference Figure 3-Figure 5 A second electromagnet 17 is provided on the side wall of the movable opening of the jacking box 5, and a second permanent magnet 16 is provided on the side wall of the curtain piece 81. The height of the second permanent magnet 16 is consistent with the height of the curtain piece 81. When the piston rod of the jack 7 is extended to the appropriate position, the second electromagnet 17 is energized, and then the second permanent magnet 16 is magnetically adsorbed and fixed to the second electromagnet 17, so that the curtain piece 81 in the movable opening is fixed in the movable opening. At this time, the supporting force on the abutment seat 18 is dispersed by extending several curtain pieces 81 out of the top wall of the jacking box 5, which helps to reduce the pressure resistance of the jack 7 and thus improves construction safety.

[0055] Reference Figure 3-Figure 5 In this embodiment, two adjacent curtain pieces 81 are movably connected by a hinge structure. The hinge structure specifically includes a top hook 22 and a bottom hook 23. The top hook 22 is set at the top or bottom end of the curtain piece 81, and the bottom hook 23 is set at the bottom or top end of the curtain piece 81. The top hook 22 and the bottom hook 23 of the two adjacent curtain pieces 81 are buckled and connected with each other, and the side walls of the top hook 22 and the bottom hook 23 are provided with rotating openings that rotate with each other.

[0056] In order to further improve the stability of the fixed connection between two adjacent curtain pieces 81, a third electromagnet 24 is embedded in the side wall of the bottom hook 23, and a third permanent magnet 25 is embedded in the side wall of the top hook 22. By connecting the power to the third electromagnet 24, the third permanent magnet 25 and the third electromagnet 24 are magnetically connected, so that the top hook 22 and the bottom hook 23 are fixedly connected.

[0057] Correspondingly, the power supply battery 21 in the curtain piece 81 can supply power to the third electromagnet 24, and the third electromagnet 24 is electrically connected to the PLC controller 12. When the height of the piston rod of the jack 7 reaches the optimal height, the PLC controller 12 controls the power supply battery 21 to supply power to the third electromagnet 24, so that the third permanent magnet 25 is magnetically attracted and connected to the third electromagnet 24. At this time, the top hook 22 and the bottom hook 23 cannot rotate, and finally a fixed connection between the two curtain pieces 81 is achieved.

[0058] Reference Figure 1-Figure 7 Based on the above Bridge 2 jacking system, the Bridge 2 jacking construction method of this application mainly includes the following steps:

[0059] Conduct a survey of the construction environment around the two beam ends of the bridge to be demolished to eliminate uncontrollable factors;

[0060] Distribution beams 3 are set up on both ends of the bridge 2, and two opposite distribution beams 3 are set up on the bottom wall of one end of the bridge 2;

[0061] Support frames 4 are set up on the piers 1 below the two beam ends of the bridge 2. Support frames 4 are set up on the opposite side walls of each pier 1. The support frames 4 are arranged opposite to the distribution beam 3 in the height direction.

[0062] The construction workers climb into the support frame 4 and securely place the jacking box 5 in the support frame 4;

[0063] The touch screen 6 on the jacking box 5 triggers the jack 7 to start, and the piston rod of the jack 7 drives the rolling curtain 8 to rise and fall synchronously through the abutment seat 18. At the same time, the winding assembly 9 in the jacking box 5 cooperates with the jack 7 to rewind the rolling curtain 8;

[0064] The construction personnel control the operation of several fixing components 10 through the touch screen 6 to fix the rolling curtain member 8 extending out of the lifting box 5;

[0065] The construction personnel control the operation of the detection component through the touch screen 6. The detection component obtains the height value between the abutment seat 18 and the jacking box 5 and displays the height value on the touch screen 6. The jacking box 5 is equipped with a PLC controller 12. The PLC controller 12 analyzes and processes the height value and the preset jacking height of the bridge 2, and obtains the adjustment value of the extension and retraction length of the piston rod of the jack 7 and the return adjustment value of the roller shutter member 8, and displays them on the touch screen 6.

[0066] The construction worker controls the disassembly assembly 13 via the touch screen 6 to disassemble the corresponding fixing assembly 10 on the rolling curtain member 8, and cooperates with the reeling assembly 9 to retract the rolling curtain member 8 extending out of the jacking box 5 into the jacking box 5; until the height between the abutment seat 18 and the jacking box 5 reaches a preset height, the PLC controller 12 controls the jack 7 to operate according to the adjustment value until the bridge 2 reaches the preset horizontal height;

[0067] Complete the jacking construction work of Bridge 2.

[0068] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A method for jacking up an old bridge (2) without dismantling, characterized in that: The following steps are involved: Conduct a survey of the construction environment around the two beam ends of the bridge to be demolished (2) to eliminate uncontrollable factors; Distribution beams (3) are set up on both beam ends of the bridge (2), and two opposite distribution beams (3) are set up on the bottom wall of one end of the bridge (2); Support frames (4) are set up on the piers (1) below the two beam ends of the bridge (2), and support frames (4) are set up on the opposite side walls of each pier (1), and the support frames (4) are arranged opposite to the distribution beam (3) in the height direction; The construction workers climb into the support frame (4) and securely place the jacking box (5) in the support frame (4); The jack (7) is triggered to start by the touch screen (6) on the lifting box (5), and the piston rod of the jack (7) drives the rolling curtain (8) to rise and fall synchronously through the abutment seat (18), and at the same time, the reeling assembly (9) in the lifting box (5) cooperates with the jack (7) to reel the rolling curtain (8); The construction personnel control the operation of several fixing components (10) through the touch screen (6) to fix the rolling curtain member (8) extending out of the lifting box (5); The construction personnel control the operation of the detection component through the touch screen (6). The detection component obtains the height value between the abutment seat (18) and the jacking box (5), and displays the height value on the touch screen (6). The jacking box (5) is provided with a PLC controller (12). The PLC controller (12) analyzes and processes the height value and the preset jacking height of the bridge (2), and obtains the adjustment value of the telescopic length of the piston rod of the jack (7) and the return adjustment value of the rolling curtain member (8), and displays them on the touch screen (6); The construction personnel control the disassembly component (13) through the touch screen (6) to disassemble the corresponding fixing component (10) on the rolling curtain member (8), and cooperate with the reeling component (9) to retract the rolling curtain member (8) extending out of the jacking box (5) into the jacking box (5); until the height value between the abutment seat (18) and the jacking box (5) reaches a preset height, the PLC controller (12) controls the jack (7) to operate according to the adjustment value until the bridge (2) reaches the preset horizontal height; The jacking construction work of the bridge (2) is completed.

2. The jacking construction method according to claim 1, characterized in that: The detection component comprises a distance sensor (11), which is arranged on the bottom wall of the abutment seat (18) to detect the distance between the abutment seat (18) and the top wall of the lifting box (5), and the distance sensor (11) is electrically connected to the PLC controller (12).

3. The jacking construction method according to claim 1, characterized in that: The rolling curtain member (8) comprises a plurality of curtain pieces (81), which are arranged in sequence along the height direction of the bridge pier (1), and two adjacent curtain pieces (81) are movably connected, and the curtain piece (81) at the top is connected to the abutment seat (18).

4. The jacking construction method according to claim 3, characterized in that: The fixing assembly (10) comprises a rubber sleeve (101), the rubber sleeve (101) being arranged between opposite side walls of two adjacent curtain sheets (81), the rubber sleeve (101) being filled with an electrorheological fluid layer (102), a power supply battery (21) being arranged in the side wall of the curtain sheet (81) for providing electric energy to the electrorheological fluid layer (102), and the electrorheological fluid layer (102) changing from a liquid state to a solid state when energized.

5. The jacking construction method according to claim 4, characterized in that: The top wall and the bottom wall of the rubber sleeve (101) are both provided with a first permanent magnet (14), the opposite side walls of two adjacent curtain pieces (81) are both provided with a first electromagnet (15), the power supply battery (21) is used to provide power to the first electromagnet (15), and the first permanent magnet (14) is magnetically connected to the first electromagnet (15).

6. The jacking construction method according to claim 5, characterized in that: The disassembly assembly (13) comprises a horizontal electric cylinder (131), a vertical electric cylinder (132) and a finger electric cylinder (133). The horizontal electric cylinder (131) is arranged on the inner side wall of the lifting box (5). The piston rod of the horizontal electric cylinder (131) is connected to the cylinder body of the finger electric cylinder (133). The opposite side walls of the two clamping jaws of the finger electric cylinder (133) are provided with first serrations. The side wall of the rubber sleeve (101) is provided with a The two clamping jaws of the vertical electric cylinder (132) are inserted into the groove (134), the groove wall of the groove (134) is provided with a second sawtooth opposite to the first sawtooth, the cylinder body of the vertical electric cylinder (132) is arranged on the top wall of the jacking box (5), the piston rod of the vertical electric cylinder (132) extends into the jacking box (5) and is provided with a push plate for pushing the rubber sleeve (101) into the jacking box (5), and the jacking box (5) is provided with a storage member for storing the rubber sleeve (101).

7. The jacking construction method according to claim 6, characterized in that: The storage member includes a guide plate (135) and a storage box (136), wherein the guide plate (135) is tiltedly arranged on the inner wall of the lifting box (5), and a material guide channel is provided on the guide plate (135). The storage box (136) is arranged on the side wall of the lifting box (5), and the lower end of the guide plate (135) passes through the side wall of the lifting box (5) and is connected to the storage box (136). The piston rod of the vertical electric cylinder (132) pushes the rubber sleeve (101) into the guide plate (135) through the push plate.

8. The jacking construction method according to claim 7, characterized in that: The side wall of the jacking box (5) is hingedly provided with an inspection door.

9. The jacking construction method according to claim 1, characterized in that: The winding assembly (9) comprises a winding motor (91) and a winding shaft (92); the winding motor (91) is arranged in a lifting box (5); the driving shaft of the winding motor (91) is coaxially fixedly connected to the winding shaft (92); the rolling curtain member (8) is fixedly mounted on the winding shaft (92); and the top wall of the lifting box (5) is provided with a movable opening for the curtain sheet (81) to pass through.

10. The jacking construction method according to claim 9, characterized in that: A second permanent magnet (16) is embedded in the side wall of the curtain piece (81), and a second electromagnet (17) is embedded in the side wall of the movable opening. The height of the second permanent magnet (16) is consistent with the height of the curtain piece (81), and the second electromagnet (17) is magnetically connected to the second permanent magnet (16).

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