Synchronous jacking and dynamic leveling system and method for bridge

Abstract

The invention relates to the technical field of bridge construction, and particularly discloses a synchronous jacking and dynamic leveling system and method for a bridge. The system comprises a jacking execution module, a transverse restraining module, a dynamic monitoring module, a support leveling module, a temporary supporting module and an overall stabilizing module. According to the system, high-risk experience operation of jacking construction can be converted into an industrial process capable of being accurately regulated and controlled, and improvement of safety, quality and efficiency is achieved. The method comprises the steps of S1, construction preparation and site arrangement; s2, a limiting and restraining system is installed; s3, a jacking execution and temporary supporting system is constructed; s4, constructing a multi-dimensional dynamic monitoring network; s5, cooperative jacking and dynamic slope adjustment are carried out; s6, load transfer and cyclic jacking; s7, leveling and transforming the support system; s8, system fallback and post-work recovery are carried out; the construction safety and quality can be improved, and meanwhile, the uncertainty of human factors is remarkably reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bridge construction, in particular to a synchronous jacking and dynamic leveling system and method for bridge. BACKGROUND

[0002] In bridge maintenance and reconstruction projects, bridge jacking and leveling is a key technology, widely used in bearing replacement, bridge deck elevation adjustment, line slope adjustment and other scenarios. This technology arranges jacking devices such as jacks on the piers or bent caps, and lifts the upper box girder structure as a whole or in segments, so as to carry out maintenance or adjustment of the lower structure.

[0003] However, the traditional bridge jacking and leveling method has many limitations. First, during the jacking process, adjacent box girder segments lack effective rigid connection and limiting at expansion joints, which are prone to lateral misalignment or torsion due to asynchronous jacking, posing a threat to the safety of the bridge structure. Second, traditional elevation monitoring relies on manual intermittent measurement using a level or the use of a limited-range dial gauge, which has problems such as data feedback lag, insufficient accuracy, inability to achieve real-time synchronous control, and is difficult to meet the requirements of high-precision jacking and leveling. In addition, traditional bearing installation and leveling is usually pre-processed on the ground, and once the bearing is stressed unevenly during jacking or due to uneven foundation settlement, there is a lack of effective in-situ adjustment means, often requiring re-jacking and steel plate padding, which is tedious and ineffective. Finally, for complex conditions requiring simultaneous adjustment of bridge longitudinal or transverse slopes, the traditional method mainly relies on the experience of operators to adjust the jacking amount of jacks at different positions, which has poor controllability, low precision, and is prone to adverse internal force redistribution of the girder structure. SUMMARY

[0004] The present application provides a synchronous jacking and dynamic leveling system and method for bridge, which can overcome some or some defects of the prior art.

[0005] According to the synchronous jacking and dynamic leveling system for bridge of the present application, it comprises: a jacking execution module, a lateral constraint module, a dynamic monitoring module, a bearing leveling module, a temporary support module and a whole stability module.

[0006] The lifting execution module includes a slope adjustment component for driving the partial lifting and lowering of the box girder; the lateral constraint module includes a limiting component for limiting the lateral displacement of adjacent box girders during the lifting process; the dynamic monitoring module includes an observation component for real-time monitoring of the vertical displacement of the box girder and feeding the monitoring data back to the lifting execution module and the support leveling module; the support leveling module includes an auxiliary component for adjusting the levelness of the supports based on the feedback from the dynamic monitoring module during the lifting process; the temporary support module includes a temporary support component for providing temporary support during the lifting process and working in conjunction with the support leveling module to maintain the temporary stability of the bridge; the overall stability module includes a limiting component for providing lateral support to the bridge structure during the lifting process.

[0007] Preferably, the limiting component includes two fixing seats respectively disposed on both sides of the expansion joint of adjacent box girders. Each fixing seat includes a base plate connected to the box girder, and a vertical plate perpendicular to the base plate is provided at the upper end of the base plate. A connecting rod is provided between the two fixing seats, with both ends passing through the vertical plate. An adjustment and fixing mechanism is provided at the connection between the connecting rod and the vertical plate. The adjustment and fixing mechanism is used to assist the connecting rod in passing through the vertical plate and to connect the two fixing seats.

[0008] The main body of the observation component includes a telescopic rod for connecting to the bottom of the box girder and a guide seat for connecting to the cap beam; the guide seat includes a first measuring scale, and mounting plates are provided on both sides of the first measuring scale along the length direction of the first measuring scale. The first measuring scale and the mounting plates together form a guide groove into which the telescopic rod extends.

[0009] The auxiliary component includes a support frame for supporting the support base. The support frame includes a rectangular upper support plate. A connecting mechanism is provided between the upper support plate and the support base to connect the upper support plate and the support base. Support legs perpendicular to the upper support plate are provided at the four corners of the upper support plate. A pushing mechanism is provided at the end of the support leg away from the upper support plate. The pushing mechanism is used to cooperate with the connecting mechanism to adjust the level of the support base.

[0010] The main body of the slope adjustment component includes two connectors located on both sides of the box girder. Each connector includes a connecting seat for connecting to the bottom side wall of the box girder. Below the connecting seat is a first lifting plate for supporting a steel plate. A lifting mechanism is provided between the first lifting plate and the connecting seat. The lifting mechanism is used to push the first lifting plate towards the bottom of the box girder.

[0011] Preferably, the adjusting and fixing mechanism includes a first limiting hole provided on the vertical plate, a sliding seat provided at the first limiting hole, the sliding seat including a first sleeve passing through the first limiting hole, and mounting rings provided at both ends of the side walls of the first sleeve; the ratio of the outer diameter of the first sleeve to the diameter of the first limiting hole is 2:3; and a first nut for threaded engagement with the connecting rod is provided on both sides of the vertical plate.

[0012] As preferred, the telescopic rod comprises a first hollow rod, a sliding rod arranged inside the first hollow rod along the length direction of the first hollow rod; a strip-shaped through hole arranged along the length direction of the first hollow rod is arranged on the side wall of the first hollow rod away from the first measuring scale, a first threaded rod penetrating through the strip-shaped through hole is arranged on the side wall of the sliding rod, and a second nut threadedly matched with the first threaded rod is arranged on the end of the first threaded rod penetrating through the strip-shaped through hole.

[0013] As preferred, one end of the first hollow rod is provided with a connecting block for connecting the box girder and the first hollow rod; the connecting block comprises a first flat plate, two first clamping plates arranged perpendicularly to the first flat plate are arranged on the end surface of the first flat plate, and the two first clamping plates and the first flat plate jointly form a clamping interval for the one end of the first hollow rod to extend into; a first bolt hole is arranged on the side wall of the first hollow rod extending into the clamping interval, and a second bolt hole corresponding to the first bolt hole is arranged on the side wall of each of the two first clamping plates; a plurality of third bolt holes are arranged on the first flat plate.

[0014] As preferred, the limiting assembly comprises an assembly main body, the assembly main body comprises a stabilizing seat for connecting with the bridge base, an inclined support mechanism is arranged above the stabilizing seat, the inclined support mechanism comprises a first inclined support plate for supporting the bridge and a second inclined support plate for supporting the first inclined support plate; a plurality of limiting mechanisms arranged at intervals along the length direction of the stabilizing seat are arranged on the stabilizing seat, and the limiting mechanisms are used for fixing the first inclined support plate and the second inclined support plate;

[0015] The temporary support assembly comprises a support assembly main body arranged between the beam plate and the pier, the support assembly main body comprises a plurality of support seats arranged at intervals along the height direction of the pier, and a rotating ball head for adjusting the support angle is arranged on the top of each support seat; the heights of the plurality of connected support seats gradually decrease from bottom to top; and the adjacent support seats are fixedly connected.

[0016] As preferred, the first inclined support plate and the second inclined support plate are in U-shaped cross section, first through holes are arranged on the side walls of both ends of the second inclined support plate, second through holes corresponding to the first through holes are arranged on the side wall of the first inclined support plate, a first threaded rod arranged along the width direction of the first inclined support plate and penetrating through the first through holes and the second through holes is arranged on the first inclined support plate, and first nuts threadedly matched with the first threaded rod are arranged on both ends of the first threaded rod.

[0017] As preferred, the stabilizing seat comprises a sliding plate in U-shaped cross section, the limiting mechanism comprises a plurality of third through holes arranged on the side walls of both sides of the sliding plate, the plurality of third through holes are arranged at intervals along the length direction of the sliding plate; a fourth through hole corresponding to the third through hole is arranged on the side wall of one end of the first inclined support plate close to the sliding plate, a second threaded rod arranged along the width direction of the first inclined support plate and penetrating through the fourth through hole and the third through holes at both ends is arranged on one end of the first inclined support plate close to the fourth through hole, and second nuts threadedly matched with the second threaded rod are arranged on both ends of the second threaded rod;

[0018] The second inclined support plate is provided with a third threaded rod arranged along the width direction of the second inclined support plate at one end close to the sliding plate, both ends of the third threaded rod pass through the first through hole and the third through hole, and both ends of the third threaded rod are provided with a third nut threadedly matched with the third threaded rod.

[0019] Preferably, the sliding plate is provided with a connecting plate arranged along the length direction of the sliding plate at both sides, and the connecting plate is provided with a connecting block for connecting the sliding plate and the connecting plate at both ends; the connecting block, the sliding plate and the connecting plate jointly form a storage interval for the third nut and the second nut to extend into; the connecting plate is provided with a plurality of fifth through holes arranged at intervals along the length direction of the connecting plate.

[0020] Through the present application, the jacking construction is changed from high-risk experience operation to industrialized process that can be accurately controlled through integrated design and data closed-loop control, and the safety, quality and efficiency are improved; the structural risks are actively prevented through multi-module cooperation, the jacking, slope adjustment and accurate installation are simultaneously completed in single operation, and the final stress state and whole life cycle of the bridge are optimized.

[0021] The present application provides a synchronous jacking and dynamic leveling method for a bridge, which is realized by the above-mentioned synchronous jacking and dynamic leveling system for a bridge, and the steps are as follows,

[0022] S1, construction preparation and site arrangement

[0023] Determine the jacking point and the limiting point below the beam plate to be jacked, the jacking point is arranged directly below the original support or the main beam web of the beam plate, and is used for installing the jacking equipment; the limiting point is located at both ends of the bridge base and the joint of the adjacent beam plate, and is used for installing the limiting assembly and the limiting assembly body; a plurality of through holes are arranged at intervals along the length direction of the side wall at both ends of the bridge base; a scaffold is erected at the pier and a full-paved tread is arranged to form a construction interface, and an anti-side-slip baffle is installed at the bent cap block;

[0024] S2, installation of limiting and restraining system

[0025] The limiting assembly is installed at the limiting point of the bridge base, the stable seat is fixedly connected with the through hole through bolts, and the inclined support mechanism thereon is adjusted, so that the first inclined support plate is in close contact with the bottom surface or the side surface of the beam plate, and a spatial restraint is formed; the limiting assembly body is installed at the expansion joint of the adjacent box girder, the fixed seat is installed on the surface of the beam plate on both sides of the expansion joint, the connecting rod passes through the vertical plates of the fixed seats on both sides, and the horizontal restraint is formed by adjusting and locking the fixed mechanism;

[0026] S3, construction of jacking execution and temporary support system

[0027] Install the main jack at the jacking point. Next to the jack, stack and fix multiple support seats from bottom to top between the bridge base and the beam to form a temporary support assembly. Adjust the rotating ball head on the top support seat to make it fully fit with the bottom surface of the beam.

[0028] S4. Construct a multi-dimensional dynamic monitoring network

[0029] Mark observation points at key sections of the bridge deck as benchmarks for macroscopic height and displacement, and as manual verification points; install digital displacement sensors near the main jacks and connect them to the central PLC main control system; install observation components, fix the upper end of the telescopic rod to the bottom of the beam, fix the guide seat to the cap beam, and extend the lower end of the telescopic rod into the guide groove of the guide seat to cover the first measuring scale, forming a real-time vertical displacement monitoring point;

[0030] S5, Coordinated Lifting and Dynamic Slope Adjustment

[0031] Start all main jacks to synchronously lift the beam to a reference height, allowing the beam to smoothly detach from its original supports and enter a controllable suspension state. Then, perform a stepped differential lifting process. The central PLC main control system, based on data feedback from the multi-dimensional monitoring network, instructs each main jack to lift at different strokes, with each lifting stroke not exceeding 2 centimeters. By controlling the differential lifting amount at each support point, the slope of the beam is dynamically adjusted synchronously during the lifting process. After each stage of lifting is completed, immediately check and adjust the inclined bracing mechanism of the limit assembly and the rotating ball joint of the temporary support assembly to ensure they maintain close contact with the beam, providing continuous constraint and auxiliary support.

[0032] S6. Load Transfer and Cyclic Lifting

[0033] When the beam is lifted to the height of a unit of support, the new support is connected to the top of the established temporary support assembly and its rotating ball head is adjusted.

[0034] Transfer the load of the main jacks completely to the temporary support components on this floor, then lower the jacks to begin the next lifting cycle; repeat steps S5 and S6 until the beam reaches the predetermined elevation;

[0035] S7, Leveling and Modification of Support System

[0036] After the jacking and slope adjustment are in place, the support system is replaced and leveled. First, the main body of the slope adjustment component is installed at intervals along the length of the beam under the bottom surface. The leveling steel plate is placed on the first lifting plate and the lifting mechanism is used to lift the leveling steel plate to fit against the bottom surface of the beam and fix it. Then, the main body of the auxiliary component is used to support the new support. The horizontal angle of the support is finely adjusted by the pushing mechanism at the bottom of its support leg so that it fits completely against the leveling steel plate on the bottom surface of the beam and is then welded and fixed. Finally, the support pad stone is modified, including removing the old pad stone, extending the reinforcing bars, pre-embedding the anchor bolts, and pouring high-performance grout.

[0037] S8, System Fallback and Post-Work Recovery

[0038] Following the reverse sequence of the jacking process, the beams are lowered slowly and in stages, allowing the load on the beams to be smoothly transferred to the new support system. After acceptance and confirmation, the main jacks, temporary support components, all limit components and other construction devices are removed in sequence to restore the bridge to its normal state.

[0039] Through this invention, holes are drilled in the side wall of the bridge pier, and a limiting device with diagonal bracing is installed with bolts. Compared with traditional welding, this not only does not damage the original structure, but also forms a rigid connection that can actively tighten the beam and effectively prevent displacement and slippage.

[0040] Using a set of modular support bases with decreasing height and fixed connection, the jacking process can be carried out in a cyclical manner according to standard steps, which is highly efficient; the rotating ball head at the top can automatically adapt to the uneven bottom of the beam, achieving full-area support and avoiding the risk of local crushing; through the combination of methods and devices, construction efficiency is further improved and the construction cycle is shortened.

[0041] Through the system integration of modular devices, the process of jacking and leveling construction has been standardized and the operation has been made more precise. The traditional extensive operation that relies on experience has been transformed into a controllable industrial process, which improves construction safety and quality while significantly reducing the uncertainty of human factors. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the main body of the component in Example 1.

[0043] Figure 2 This is an exploded view of the main body of the component in Example 1.

[0044] Figure 3 A schematic diagram of the sliding plate in Example 1.

[0045] Figure 4 A schematic diagram of the diagonal bracing mechanism in Example 1.

[0046] Figure 5 A schematic diagram of the second diagonal brace in Example 1.

[0047] Figure 6 A schematic diagram of the first diagonal brace in Example 1.

[0048] Figure 7 A schematic diagram of the installation position of the main component in Example 1.

[0049] Figure 8 A schematic diagram of the main body of the support component in Example 1.

[0050] Figure 9 Exploded view of the main body of the support component in Example 1.

[0051] Figure 10 A schematic diagram of the support base in Example 1.

[0052] Figure 11 Exploded view of the support base in Example 1.

[0053] Figure 12 Cross-sectional view of the main body of the support component in Example 1.

[0054] Figure 13 A schematic diagram of the construction status of the main support component in Example 1.

[0055] Figure 14 This is a schematic diagram of the main body of the limiting component in Example 1.

[0056] Figure 15 This is a schematic diagram of the fixing base in Example 1.

[0057] Figure 16 This is a schematic diagram of the sliding seat in Example 1.

[0058] Figure 17 This is a schematic diagram of the first limiting hole in Example 1.

[0059] Figure 18 This is a cross-sectional view of the main body of the limiting component in Example 1.

[0060] Figure 19 This is a schematic diagram of the main body of the observation component in Example 1.

[0061] Figure 20 This is a schematic diagram of the guide seat in Example 1.

[0062] Figure 21 This is a schematic diagram of the telescopic rod in Example 1.

[0063] Figure 22 This is an exploded view of the telescopic rod in Example 1.

[0064] Figure 23 This is a schematic diagram of the connecting block in Example 1.

[0065] Figure 24 This is a schematic diagram of the sliding rod in Example 1.

[0066] Figure 25 This is a schematic diagram of the main body of the auxiliary component in Example 1.

[0067] Figure 26 This is a schematic diagram of the support frame in Example 1.

[0068] Figure 27 This is a schematic diagram of the upper support plate in Example 1.

[0069] Figure 28 This is a schematic diagram of the support leg in Example 1.

[0070] Figure 29 This is a schematic diagram of the main body of the slope adjustment component in Example 1.

[0071] Figure 30 This is a schematic diagram of the connector in Example 1.

[0072] Figure 31 This is a schematic diagram of the connector in Example 1.

[0073] Figure 32 This is a schematic diagram of the first lifting plate in Example 1.

[0074] Figure 33 This is a schematic diagram of the second lifting plate in Example 1.

[0075] Figure 34 This is a schematic diagram of the second threaded rod in Example 1.

[0076] Figure 35 This is a schematic diagram of the installation position of the main body of the slope adjustment component in Example 1. Detailed Implementation

[0077] To further understand the content of this invention, the invention will be described in detail with reference to the embodiments. It should be understood that the embodiments are merely illustrative and not limiting of the invention.

[0078] Example 1

[0079] like Figures 1-35 As shown, this embodiment provides a synchronous jacking and dynamic leveling system for bridges, including a jacking execution module, a lateral constraint module, a dynamic monitoring module, a support leveling module, a temporary support module, and an overall stability module;

[0080] The lifting execution module includes a slope adjustment component body 1600 for driving partial lifting and lowering of the box girder; the lateral constraint module includes a limiting component body 100 for limiting the lateral displacement of adjacent box girders during the lifting process; the dynamic monitoring module includes an observation component body 600 for real-time monitoring of the vertical displacement of the box girder and feeding back the monitoring data to the lifting execution module and the support leveling module; the support leveling module includes an auxiliary component body 1200 for adjusting the levelness of the supports according to the feedback from the dynamic monitoring module during the lifting process; the temporary support module includes a temporary support component for providing temporary support during the lifting process and working in conjunction with the support leveling module to maintain the temporary stability of the bridge; the overall stability module includes a limiting component for providing lateral support to the bridge structure during the lifting process.

[0081] The limiting component body 100 includes two fixing seats 120 respectively disposed on both sides of the expansion joint of adjacent box girders. The fixing seat 120 includes a base plate 220 connected to the box girder. A vertical plate 240 is provided at the upper end surface of the base plate 220 perpendicular to the base plate 220. A connecting rod 130 is provided between the two fixing seats 120, with both ends passing through the vertical plate 240. An adjustment and fixing mechanism is provided at the connection between the connecting rod 130 and the vertical plate 240. The adjustment and fixing mechanism is used to assist the connecting rod 130 in passing through the vertical plate 240 and to connect the two fixing seats 120.

[0082] The main body 600 of the observation component includes a telescopic rod 610 for connecting to the bottom of the box girder and a guide seat 620 for connecting to the cap beam; the guide seat 620 includes a first measuring scale 710, and mounting plates 730 are provided on both sides of the first measuring scale 710 along the length direction of the first measuring scale 710. The first measuring scale 710 and the mounting plates 730 together form a guide groove 720 into which the telescopic rod 610 extends.

[0083] The auxiliary component body 1200 includes a support frame 1202 for supporting the support 1201. The support frame 1202 includes a rectangular upper support plate 1401. A connecting mechanism is provided between the upper support plate 1401 and the support 1201 for connecting the upper support plate 1401 and the support 1201. Each of the four corners of the upper support plate 1401 is provided with a support leg 1302 perpendicular to the upper support plate 1401. A pushing mechanism is provided at the end of the support leg 1302 away from the upper support plate 1401. The pushing mechanism is used to cooperate with the connecting mechanism to adjust the level of the support 1201.

[0084] The slope adjustment component body 1600 includes two connectors 1602 located on both sides of the box girder. Each connector 1602 includes a connecting seat 1701 for connecting to the bottom side wall of the box girder. A first lifting plate 1601 for supporting steel plates is provided below the connecting seat 1701. A lifting mechanism is provided between the first lifting plate 1601 and the connecting seat 1701. The lifting mechanism is used to push the first lifting plate 1601 to move towards the bottom of the box girder.

[0085] In this embodiment, before lifting the box girder, construction workers first erect scaffolding at the piers, and then lay a construction interface composed of planks on top of the scaffolding. Simultaneously, anti-slip baffles are installed at the cap beam blocks, with the baffles positioned along the bridge lifting direction and fixed to the blocks with screws. Next, the limiting component body 100 is installed at the expansion joint of adjacent box girders. When installing the limiting component body 100, construction workers first create multiple bolt holes on the upper surface of opposite ends of the adjacent box girders. Then, the fixing seat 120 is installed along the width direction of the box girder. The fixtures are arranged one-to-one. After the arrangement is completed, bolts are passed through the base plate 220 of the fixing seat 120 and inserted into the bolt holes to fix the fixing seat 120. Then, the construction workers pass the connecting rod 130 through the vertical plate 240 on the corresponding fixing seat 120. Finally, the first nuts 140 on both sides of the vertical plate 240 are tightened to make the first nuts 140 press against the vertical plate 240, thereby fixing the fixing seat 120. This prevents the fixing seat 120 from being moved asynchronously during the box girder lifting process, which could cause lateral misalignment or torsion and threaten the safety of the bridge structure.

[0086] After the jacking preparation is completed, main jacks are installed at the bottom of the box girder, and temporary supports consisting of support blocks are configured below the stress-bearing parts at the bottom of the box girder. The support blocks are made by welding rectangular plates on both sides of the sleeve, and the sleeve is filled with sand or concrete. Multiple support blocks are prepared. After the temporary supports are completed, observation points are marked at the ends and mid-span of the key sections of the bridge deck as macroscopic benchmarks and manual verification points for the jacking height and displacement. Subsequently, digital displacement sensors are installed near each jack and connected to the central PLC main control system via data cables. Then, the main body of the observation component 600 is installed. When installing the main body of the observation component 600, bolt holes are first drilled at the bottom of the box girder. Then, the construction workers extend the upper end of the telescopic rod 610 to the bolt holes and fix the telescopic rod 610 to the box girder with bolts. Then, bolt holes are drilled on the cap beam, the guide seat 620 is placed at the bolt holes, and bolts are used to fix it to the box girder. During the fixing of the guide seat 620, the telescopic rod 610 extends into the guide groove 720 on the guide seat 620 and covers the scale on the first measuring scale 710, so that the lower end of the telescopic rod 610 is exactly at the 0 mark line of the first measuring scale 710. Compared with the prior art, this device provides a precise vertical movement trajectory for the telescopic rod 610 through the guide groove 720 structure formed by the first measuring scale 710 and the mounting plates 730 on both sides, effectively eliminating measurement errors caused by lateral swaying. At the same time, it ensures that the rod body always maintains a constant distance from the scale surface during the measurement process, achieving millimeter-level measurement accuracy. This component can serve as an independent measurement system to provide visualized displacement data, and it can also complement the data of the electronic sensor system. When the automation system malfunctions, the staff can directly read the scale of the first measuring scale 710 to obtain the real displacement value, forming a reliable emergency verification plan.

[0087] Then, all jacks are activated to synchronously lift the box girder to a reference height, allowing the girder to smoothly detach from the temporary supports and enter a controllable suspended state. Each jack is then lifted to different heights, with each lift not exceeding 2 centimeters, and this process is repeated. By controlling the differential lifting amount at each jack's support point, the slope of the box girder is dynamically adjusted synchronously during the lifting process. After the slope adjustment is in place, the temporary supports are raised, and then the support system is replaced. First, the slope adjustment component body 1600 is used. During installation, two slope adjustment component bodies 1600 are installed at intervals along the length of the box girder to adjust the slope. The connectors 1602 on the main body 1600 are located on both sides of the bottom of the box girder. When installing the connectors 1602, bolt holes are first drilled on the side walls of both sides of the bottom of the box girder. Bolts are then passed through the connectors 1701 to fix the connectors 1701 to the side walls of the box girder. Next, the workers pass the upper end of the second threaded rod 1703 through the connector 1701 and the lower end through the first lifting plate 1601 and the second lifting plate 1704. A third nut 2101 is then screwed onto the connector 1701 above the connector 1701 and below the second lifting plate 1704. Finally, the leveling steel plate is placed on the first lifting plate 1601, and then the second lifting plate 1602 is rotated. The third nut 2101 below 704 rises along the second threaded rod 1703, thereby pushing the first lifting plate 1601, the second lifting plate 1704, and the leveling steel plate upwards until the leveling steel plate rises to the bottom surface of the box girder and fits against it. Finally, the construction workers fix the leveling steel plate to the bottom surface of the box girder with bolts. This component uses symmetrically arranged connectors 1602 on both sides, which are firmly connected to the bottom sidewall of the box girder, forming a stable load-bearing foundation. The leveling steel plate is mechanically lifted and finally fully fits against the bottom surface of the box girder, ensuring uniform transmission of the lifting force and effectively avoiding local stress concentration. Rotating the third nut 2101 drives the leveling steel plate to rise and fall, achieving millimeter-level precise control of the leveling steel plate height. Unlike traditional slope adjustment methods that rely on operating jacks and require indirect judgment of the effect through remote sensors and computer screens, this component's mechanical adjustment method allows construction personnel to directly rotate the nut and visually observe the rising of the lifting plate and steel plate. This avoids potential signal delays and data misreading issues that may occur in electronic systems, significantly reducing the operational threshold and complexity, making the operation process clear and straightforward. The connections between components are mainly achieved through bolts and threaded rods, resulting in a high degree of standardization and quick and easy on-site assembly.

[0088] After the leveling steel plate is installed, the auxiliary component body 1200 is used to lift the new support 1201. First, the construction workers place the new support 1201 on the upper support plate 1401. Then, the support 1201 is connected to the upper support plate 1401 through the connecting mechanism to prevent the support 1201 from moving on the upper support plate 1401. Next, the construction workers activate the pushing mechanism under the support leg 1302 to lift the entire support frame 1202, causing the support 1201 to rise. After the support 1201 rises to a suitable height, the construction workers adjust the support angle of the support frame 1202 and the support 1201 by adjusting the four pushing mechanisms respectively, so that the support 1201 is in close contact with the leveling steel plate on the bottom surface of the box girder. If there are small gaps, they are filled with thin steel sheets. Finally, the support 1201 is welded to the leveling steel plate. This component realizes the integrated operation of positioning, lifting, and leveling of the support 1201. The supporting leg 1302 push mechanism can simultaneously complete the vertical positioning and horizontal attitude adjustment of the bearing 1201, and can precisely adjust the three-dimensional spatial attitude of the bearing 1201 to ensure that it achieves full-area stress-free fit with the leveling steel plate of the box girder. Through the dual guarantee of mechanical connection and fine-tuning filling, it not only ensures the stability of the installation process, but also fundamentally eliminates the risk of bearing eccentric pressure, providing a long-term reliable support foundation for the bridge. In the traditional method, the lifting of the bearing relies on jacks and the leveling relies on manual padding, which are separate processes. This component combines the two. Through the push mechanism under the supporting leg 1302, the lifting and high-precision leveling of the bearing 1201 are completed in place at the installation position, which simplifies the process, reduces the dependence on and interference of the main lifting system, and simplifies the operation steps, avoiding dependence on the technical skills of the construction personnel. Afterwards, the removal of the bearing pad stone, the extension of the reinforcing steel, the pre-embedding of the anchor bolts, and the pouring of high-performance grouting material are carried out.

[0089] Finally, following the reverse sequence of the jacking process, the girder was lowered slowly and in stages, allowing the load of the box girder to be smoothly transferred to the new support 1201. After acceptance and confirmation, all construction equipment was removed, and the bridge was restored to its normal state.

[0090] In this embodiment, the adjusting and fixing mechanism includes a first limiting hole 410 provided on the vertical plate 240, a sliding seat 150 provided at the first limiting hole 410, and a first sleeve 320 passing through the first limiting hole 410. The first sleeve 320 is provided with mounting rings 330 at both ends of its sidewalls. The ratio of the outer diameter of the first sleeve 320 to the diameter of the first limiting hole 410 is 2:3. The vertical plate 240 is provided with a first nut 140 on both sides for threaded engagement with the connecting rod 130.

[0091] In this embodiment, when installing the connecting rod 130, the construction personnel first pass both ends of the connecting rod 130 through the first sleeve 320. Since the diameter of the first limiting hole 410 is larger than the outer diameter of the first sleeve 320, the first sleeve 320 can slide within the first limiting hole 410. This allows the construction personnel to easily pass both ends of the connecting rod 130 through the fixing seat 120 on the bridge by adjusting the position of the first sleeve 320. This avoids the need to re-erect bolt holes and further damage the bridge due to deviations in the positions of the corresponding fixing seats 120 on adjacent bridges when the construction personnel connect the fixing seats 120 to the bridge.

[0092] In this embodiment, a plurality of diagonal bracing plates 230 are provided between the base plate 220 and the vertical plate 240, which are spaced apart along the width direction of the base plate 220.

[0093] In this embodiment, the diagonal brace 230 connects the base plate 220 and the vertical plate 240, thereby further strengthening the overall structural strength of the fixed base 120.

[0094] In this embodiment, the telescopic rod 610 includes a first hollow rod 820, inside which is provided a sliding rod 830 arranged along the length direction of the first hollow rod 820; the side wall of the first hollow rod 820 away from the first measuring ruler 710 is provided with a strip-shaped through hole 920 arranged along the length direction of the first hollow rod 820, and the side wall of the sliding rod 830 is provided with a first threaded rod 1101 passing through the strip-shaped through hole 920, and one end of the first threaded rod 1101 passing through the strip-shaped through hole 920 is provided with a second nut 1102 that is threadedly engaged with the first threaded rod 1101.

[0095] In this embodiment, after the construction worker inserts the telescopic rod 610 into the guide groove 720, the worker pushes the first threaded rod 1101 along the strip-shaped through hole 920, causing the sliding rod 830 to move along the first hollow rod 820. Ultimately, the lower end of the sliding rod 830 moves to the 0 mark of the first measuring scale 710, facilitating adjustment of the sliding rod 830 so that its lower end is at the 0 mark, allowing for subsequent observation. After the sliding rod 830 has moved, the worker rotates the second nut 1102 to press it against the first hollow rod 820, thus connecting and fixing the sliding rod 830 to the first hollow rod 820, preventing the sliding rod 830 from moving.

[0096] In this embodiment, one end of the first hollow rod 820 is provided with a connecting block 810 for connecting the box girder and the first hollow rod 820; the connecting block 810 includes a first flat plate 1001, and two first clamping plates 1002 are provided at one end face of the first flat plate 1001, which are perpendicular to the first flat plate 1001. The two first clamping plates 1002 and the first flat plate 1001 together form a clamping interval 1003 into which one end of the first hollow rod 820 extends; a first bolt hole 910 is provided on the side wall of the first hollow rod 820 extending into the clamping interval 1003, and a second bolt hole 1004 corresponding to the first bolt hole 910 is provided on the side wall of each of the two first clamping plates 1002; and a plurality of third bolt holes 1005 are provided on the first flat plate 1001.

[0097] In this embodiment, when installing the telescopic rod 610, the construction personnel first insert one end of the first hollow rod 820 into the clamping section 1003 on the connecting block 810, and then connect the first hollow rod 820 and the connecting block 810 by passing bolts through the first clamping plate 1002 and the second bolt hole 1004 and the first bolt hole 910 on the first hollow rod 820. When connecting the telescopic rod 610 to the box girder, bolt holes are first drilled at the bottom of the box girder, then the third bolt hole 1005 on the first flat plate 1001 is aligned with the bolt holes, and finally the first flat plate 1001 and the box girder are fixedly connected by bolts, which facilitates the construction personnel to connect the telescopic rod 610 and the box girder.

[0098] In this embodiment, the upper support plate 1401 includes two parallel first connecting plates 1301 and two parallel second connecting plates 1306, which are connected end to end in sequence; between the two second connecting plates 1306, there are multiple third connecting plates 1305 spaced apart along the length direction of the first connecting plates 1301, and multiple first holes 1304 spaced apart along the length direction of the third connecting plates 1305 are provided at both ends of the sidewalls of the third connecting plates 1305; the connecting mechanism includes an L-shaped pin 1307, which passes through the support 1201 and the first holes 1304 to limit the position of the support 1201.

[0099] In this embodiment, when installing the support plate 1401, two first connecting plates 1301 and two second connecting plates 1306 are connected by welding. Both the first connecting plates 1301 and the second connecting plates 1306 are made of square steel. The third connecting plate 1305 is welded to the second connecting plates 1306, and the third connecting plate 1305 is also made of square steel. When the construction personnel place the support 1201 on the third connecting plate 1305, the through hole at the bottom of the support 1201 is aligned with the first hole 1304 on the third connecting plate 1305. Then, the pin rod 1307 passes through the first hole 1304 and the through hole at the bottom of the support 1201 to limit the support 1201 and prevent the support 1201 from moving on the third connecting plate 1305. By setting multiple first holes 1304, supports 1201 of different sizes can be accommodated.

[0100] In this embodiment, both ends of the two first connecting plates 1301 are provided with second holes 1402 corresponding to the first holes 1304.

[0101] In this embodiment, by providing multiple second holes 1402, the upper support plate 1401 can adapt to and limit supports 1201 of different sizes.

[0102] In this embodiment, the connecting seat 1701 includes a parallel plate 1804 arranged parallel to the top surface of the box girder, an inclined plate 1803 arranged at one end of the parallel plate 1804, a fixing plate 1801 for connecting the parallel plate 1804 and the inclined plate 1803 at both ends, and a fifth bolt hole 1802 is provided at the inclined plate 1803.

[0103] In this embodiment, the inclination of the inclined plate 1803 is the same as the inclination of the bottom side wall of the box girder, which facilitates the inclined plate 1803 to fit against the side wall of the box girder and keeps the parallel plate 1804 horizontal. By aligning the fifth bolt hole 1802 with the bolt hole opened on the side wall of the box girder, and then inserting the limiting bolt 1702 through the fifth bolt hole 1802 into the bolt hole, the inclined plate 1803 and the box girder are fixedly connected. The fixing plate 1801 connects the parallel plate 1804 and the inclined plate 1803, further strengthening the overall structural strength of the connecting seat 1701.

[0104] In this embodiment, the lifting mechanism includes a second lifting plate 1704 for supporting the first lifting plate 1601. A guide strip hole 1805 is provided at the parallel plate 1804. The lifting mechanism includes a second threaded rod 1703 passing through the guide strip hole 1805, the second lifting plate 1704 and the first lifting plate 1601. A third nut 2101 that is threadedly engaged with the second threaded rod 1703 is provided above the parallel plate 1804 and below the second lifting plate 1704.

[0105] In this embodiment, construction workers can rotate the third nut 2101 to push the first lifting plate 1601 and the second lifting plate 1704 along the second threaded rod 1703, which makes it easier for construction workers to push the adjusting steel plate above the first lifting plate 1601 to the bottom of the box girder.

[0106] In this embodiment, the limiting component includes a component body 3100, which includes a stabilizing seat 3120 for connecting to the bridge base. A diagonal bracing mechanism 3110 is provided above the stabilizing seat 3120. The diagonal bracing mechanism 3110 includes a first diagonal bracing plate 3220 for supporting the bridge and a second diagonal bracing plate 3210 for supporting the first diagonal bracing plate 3220. A plurality of limiting mechanisms are provided at the stabilizing seat 3120, spaced apart along the length of the stabilizing seat 3120. These limiting mechanisms are used to fix the first diagonal bracing plate 3220 and the second diagonal bracing plate 3210.

[0107] The temporary support assembly includes a support assembly body 3800 disposed between the beam and the pier. The support assembly body 3800 includes a plurality of support seats 3820 spaced apart along the height direction of the pier. The top of each support seat 3820 is provided with a rotating ball head 3810 for adjusting the support angle. The height of the plurality of connected support seats 3820 gradually decreases from bottom to top. Adjacent support seats 3820 are fixedly connected.

[0108] In this embodiment, before lifting the beam, the construction workers set lifting points and limiting points on the bridge base below the beam to be lifted. The lifting points are located directly below the original supports or web of the main beam, and the limiting points are located at both ends of the bridge base. After the limiting points are determined, multiple through holes are drilled at both ends of the bridge base sidewalls using an electric drill. These through holes are spaced apart along the length of the bridge base. After the through holes are drilled, the construction workers first place the stabilizing seat 3120 on the main body 3100 of the component at the through hole position, aligning the through hole on the bridge base with the fifth through hole 3310 on the connecting plate 3250. Then, bolts are used to connect the stabilizing seat 3120 to the bridge base through the through hole. After the stabilizing seat 3120 is fixed, the construction workers connect the diagonal bracing mechanism 3110 to the stabilizing seat 3120. One end of a diagonal brace 3220 extends toward a sliding plate 3230. Then, a second threaded rod 3450 passes through a third through hole 3320 on the sliding plate 3230 and a fourth through hole 3620 on the first diagonal brace 3220. Then, a second nut 3460 is screwed onto both ends of the second threaded rod 3450 to rotatably connect the first diagonal brace 3220 and the sliding plate 3230. Then, the second diagonal brace 3210 and the first diagonal brace 3220 are rotatably connected in the same way through the first threaded rod 3420 and the first nut 3410. Then, the first diagonal brace 3220 is adjusted to form a tight contact with the bottom or side surface of the beam plate. Finally, the lower end of the second diagonal brace 3210 is fixedly connected to the sliding plate 3230 through the third threaded rod 3440 and the third nut 3430, thereby supporting the first diagonal brace 3220.

[0109] After the inclined bracing mechanism 3110 is completed, jacks are installed at the jacking points, and temporary support components are assembled simultaneously on one side of the jacks. When installing the temporary support components, support seats 3820 of different heights are first stacked according to the height between the bridge base and the beam, until the support seats 3820 can reach the beam position. When connecting the support seats 3820, bolts are passed through the bolt holes 31001 on the first baffle 31003 at the upper end of the lower support seat 3820 and the bolt holes 31001 on the second baffle 31004 at the lower end of the upper support seat 3820 to fix two adjacent support seats 3820 together. Then, the support seats 3820 are connected and stacked in the same way. After the support seats 3820 are stacked to the required height, the construction workers adjust the rotating ball head 3810 at the top to make it fully fit with the bottom surface of the beam to form auxiliary support.

[0110] After the limit assembly and temporary support assembly are installed, the jacks are used for staged lifting, lifting a certain distance each time, with the lifting distance gradually decreasing each time. After each stage of lifting, the jacks stop lifting. At this point, the construction workers loosen the connecting bolts between the stabilizer 3120 and the bridge base, adjust the position of the stabilizer 3120, and then reconnect the stabilizer 3120 to the bridge base using bolts. After the stabilizer 3120 is adjusted, the connection positions of the first diagonal brace 3220 and the second diagonal brace 3210 with the stabilizer 3120 are adjusted so that the first diagonal brace... Plate 3220 forms a tight contact with the bottom or side surface of the beam slab; after the limiting component is adjusted, remove the rotating ball head 3810 from the top of the support base 3820, stack the support bases 3820 to a suitable height, and then place the rotating ball head 3810 on top of the support base 3820. Adjust the rotating ball head 3810 at the top to make it fully fit with the bottom surface of the beam slab; then lower the jack to carry out the next cycle of lifting; then repeat the above operation until the beam slab reaches the expected height, and then remove the jack, temporary support component and limiting component.

[0111] In summary, compared with traditional structures, the limiting components allow construction workers to continuously adjust their position and support angle according to the lifting process of the beam, enabling them to follow the beam's upward trajectory and change their support state. This prevents the beam from deviating during the lifting process, which is difficult to correct effectively. At the same time, the limiting components do not require welding or steel wedges for fixing, thus causing less damage to the original bridge abutment concrete structure.

[0112] Compared to existing technologies, the temporary support assembly features a top rotating ball head 3810 that automatically adjusts its angle, ensuring that the support seat 3820 maintains a tight fit across the entire beam regardless of its flatness, evenly distributing the concentrated force of the jack into a surface load. This avoids the risk of localized crushing of the beam concrete caused by point or line contact with traditional rigid pads. The design of all support seats having the same width but progressively decreasing height eliminates the need for complex measurements and calculations to determine the required pad height after each jacking operation, standardizing the construction process and speeding up the process. The jacking stroke and final posture at each step are controllable, reducing the risk of over-jacking or insecure support due to measurement or judgment errors. The fixed connection between adjacent support seats 3820 solves the problems of poor overall integrity and low stiffness in traditional pad stacking systems. The fixed connection ensures that the support system can effectively resist bending moments generated by horizontal forces or eccentric loads, resulting in greater stability.

[0113] In this embodiment, the first inclined plate 3220 and the second inclined plate 3210 have U-shaped cross sections. The second inclined plate 3210 has a first through hole 3520 at both ends of its sidewall. The first inclined plate 3220 has a second through hole 3610 at its sidewall, which corresponds to the first through hole 3520. The first inclined plate 3220 has a first threaded rod 3420 that is arranged along the width direction of the first inclined plate 3220 and passes through the first through hole 3520 and the second through hole 3610. The first threaded rod 3420 has a first nut 3410 at both ends that is threadedly engaged with the first threaded rod 3420.

[0114] In this embodiment, the first diagonal brace 3220 and the second diagonal brace 3210 are made of channel steel. The first threaded rod 3420 and the first nut 3410 cooperate to connect the second diagonal brace 3210 and the first diagonal brace 3220, so that the second diagonal brace 3210 and the first diagonal brace 3220 can rotate at the connection point. This allows construction personnel to adjust the support angle of the first diagonal brace 3220 by adjusting the rotation angle of the second diagonal brace 3210 and the first diagonal brace 3220, so that the first diagonal brace 3220 can fit tightly with the bottom or side of the beam or slab. At the same time, it can adapt to the bottom or side of the beam or slab with different inclinations.

[0115] In this embodiment, the stabilizing base 3120 includes a sliding plate 3230 with a U-shaped cross-section. The limiting mechanism includes a plurality of third through holes 3320 disposed on the side walls of both sides of the sliding plate 3230. The plurality of third through holes 3320 are spaced apart along the length direction of the sliding plate 3230. The first inclined support plate 3220 is provided with a fourth through hole 3620 corresponding to the third through hole 3320 at one end of its side wall near the sliding plate 3230. The first inclined support plate 3220 is provided with a second threaded rod 3450 disposed along the width direction of the first inclined support plate 3220 and passing through the fourth through hole 3620 and the third through hole 3320 at both ends. The second threaded rod 3450 is provided with a second nut 3460 threadedly engaged with the second threaded rod 3450 at both ends.

[0116] The second inclined plate 3210 is provided with a third threaded rod 3440 at one end near the sliding plate 3230, which is arranged along the width direction of the second inclined plate 3210. Both ends of the third threaded rod 3440 pass through the first through hole 3520 and the third through hole 3320, and both ends of the third threaded rod 3440 are provided with a third nut 3430 that is threadedly engaged with the third threaded rod 3440.

[0117] This embodiment facilitates the connection between the first inclined plate 3220 and the sliding plate 3230, as well as the second inclined plate 3210 and the sliding plate 3230, by the cooperation of the second threaded rod 3450 and the second nut 3460, the third threaded rod 3440 and the third nut 3430.

[0118] In this embodiment, both sides of the sliding plate 3230 are provided with connecting plates 3250 arranged along the length direction of the sliding plate 3230, and both ends of the connecting plates 3250 are provided with connecting blocks 3240 for connecting the sliding plate 3230 and the connecting plates 3250; the connecting blocks 3240, the sliding plate 3230 and the connecting plates 3250 together constitute a storage area for the third nut 3430 and the second nut 3460 to extend into; the connecting plates 3250 are provided with a plurality of fifth through holes 3310 spaced apart along the length direction of the connecting plates 3250.

[0119] In this embodiment, the construction personnel pass the bolts through the through holes drilled at both ends of the bridge base and through the fifth through hole 3310 on the connecting plate 3250 to connect the connecting plate 3250 to the bridge base. Through the storage area, the third nut 3430 and the second nut 3460 will extend into the storage area to prevent the third nut 3430 and the second nut 3460 from affecting the connection between the sliding plate 3230 and the bridge base.

[0120] In this embodiment, the support base 3820 includes a connecting sleeve 31005. The two ends of the connecting sleeve 31005 are respectively provided with a first baffle 31003 and a second baffle 31004 fixedly connected to the connecting sleeve 31005. The connecting sleeve 31005, the first baffle 31003 and the second baffle 31004 together constitute a storage area 31201 for storing concrete.

[0121] In this embodiment, when the construction workers are making the support base 3820, one end of the connecting sleeve 31005 is first welded to the second baffle 31004. After the welding is completed, concrete is injected into the connecting sleeve 31005 until the inside of the connecting sleeve 31005 is filled with concrete. Finally, the first baffle 31003 is welded to the upper end of the connecting sleeve 31005 to prevent concrete leakage. The concrete is stored in the storage area 31201, thereby further strengthening the overall structural strength of the support base 3820.

[0122] In this embodiment, the first baffle 31003 and the second baffle 31004 are rectangular in shape. Bolt holes 31001 are provided at the corners of the first baffle 31003 and the second baffle 31004. The first baffle 31003 and the second baffle 31004 of the adjacent support base 3820 are connected by bolts passing through the bolt holes 31001.

[0123] In this embodiment, after stacking the support bases 3820, two adjacent support bases 3820 are connected by bolts to prevent the two adjacent support bases 3820 from detaching.

[0124] In this embodiment, the second baffle 31004 is provided with a plurality of limiting holes 31006 distributed circumferentially along the connecting sleeve 31005, and the first baffle 31003 is provided with a reinforcing block 31002 at one end face away from the second baffle 31004 that corresponds to the limiting holes 31006 and passes through the limiting holes 31006.

[0125] In this embodiment, when it is necessary to stack support bases 3820, the reinforcing block 31002 on the first baffle 31003 of the lower support base 3820 will pass through the limiting hole 31006 on the second baffle 31004 of the upper support base 3820, thereby limiting the upper support base 3820 and making it convenient for construction personnel to install bolts to connect the upper and lower support bases 3820.

[0126] This embodiment provides a method for synchronous jacking and dynamic leveling of bridges, implemented by the aforementioned synchronous jacking and dynamic leveling system for bridges. The steps are as follows:

[0127] S1. Construction Preparation and Site Layout

[0128] Determine the jacking point and limiting point below the beam to be jacked. The jacking point is set directly below the original support of the beam or the web of the main beam and is used to install the jacking equipment. The limiting point is located at both ends of the bridge base and at the joints of adjacent beams and is used to install the limiting component and the limiting component body 100. Multiple through holes are drilled at intervals along the length of the side walls at both ends of the bridge base. Scaffolding is erected at the piers and fully covered with treads to form a construction interface, and anti-slip baffles are installed at the cap beam blocks.

[0129] S2, Installation Limit and Restraint System

[0130] Limiting components are installed at the limiting points on the bridge base. The stabilizing seat 3120 is fixedly connected to the through hole by bolts, and the inclined bracing mechanism 3110 on it is adjusted so that the first inclined bracing plate 3220 is in close contact with the bottom or side of the beam plate to form a spatial constraint. The main body 100 of the limiting component is installed at the expansion joint of the adjacent box girder. The fixing seat 120 is installed on the beam plate surface on both sides of the expansion joint, and the connecting rod 130 is passed through the vertical plate 240 of the fixing seat on both sides. The fixing mechanism is adjusted and locked to form a lateral constraint.

[0131] S3. Construct a lifting execution and temporary support system.

[0132] Install the main jack at the jacking point. Next to the jack, stack and fix multiple support seats 3820 from bottom to top between the bridge base and the beam to form a temporary support assembly. Adjust the rotating ball head 3810 on the top support seat to make it fully fit with the bottom surface of the beam.

[0133] S4. Construct a multi-dimensional dynamic monitoring network

[0134] Mark observation points at key sections of the bridge deck as benchmarks for macroscopic height and displacement, and as manual verification points; install digital displacement sensors near the main jacks and connect them to the central PLC main control system; install observation components, fix the upper end of the telescopic rod 610 to the bottom of the beam, fix the guide seat 620 to the cap beam, and extend the lower end of the telescopic rod into the guide groove 720 of the guide seat 620, covering the scale of the first measuring ruler 710, to form a real-time vertical displacement monitoring point;

[0135] S5, Coordinated Lifting and Dynamic Slope Adjustment

[0136] Start all main jacks to synchronously lift the beam to a reference height, allowing the beam to smoothly detach from its original supports and enter a controllable suspension state. Then, perform step-by-step differential lifting. The central PLC main control system, based on data feedback from the multi-dimensional monitoring network, instructs each main jack to lift at different strokes, with each lifting stroke not exceeding 2 centimeters. By controlling the differential lifting amount at each support point, the slope of the beam is dynamically adjusted synchronously during the lifting process. After each stage of lifting is completed, immediately check and adjust the inclined bracing mechanism 3110 of the limit component and the rotating ball head 3810 of the temporary support component to ensure that they maintain close contact with the beam and provide continuous constraint and auxiliary support.

[0137] S6. Load Transfer and Cyclic Lifting

[0138] When the beam is lifted to the height of a unit of support 3820, the new support 3820 is connected to the top of the established temporary support assembly and its rotating ball head 3810 is adjusted.

[0139] Transfer the load of the main jacks completely to the temporary support components on this floor, then lower the jacks to begin the next lifting cycle; repeat steps S5 and S6 until the beam reaches the predetermined elevation;

[0140] S7, Leveling and Modification of Support System

[0141] After the jacking and slope adjustment are in place, the support system is replaced and leveled. First, the slope adjustment component body 1600 is installed at intervals along the length of the beam slab below the bottom surface. The leveling steel plate is placed on the first lifting plate 1601, and the leveling steel plate is lifted and fixed to the bottom surface of the beam slab by the lifting mechanism. Then, the auxiliary component body 1200 is used to support the new support 1201. The horizontal angle of the support 1201 is finely adjusted by the pushing mechanism at the bottom of its support leg 1302 so that it is completely in contact with the leveling steel plate on the bottom surface of the beam slab and then welded and fixed. Finally, the support pad stone is modified, including removing the old pad stone, extending the reinforcing bars, pre-embedding the anchor bolts, and pouring high-performance grout.

[0142] S8, System Fallback and Post-Work Recovery

[0143] Following the reverse sequence of the jacking process, the beams are lowered slowly and in stages, allowing the load on the beams to be smoothly transferred to the new support system. After acceptance and confirmation, the main jacks, temporary support components, all limit components and other construction devices are removed in sequence to restore the bridge to its normal state.

[0144] In this embodiment, holes are drilled in the side wall of the pier, and a limiting device with diagonal bracing is installed with bolts. Compared with traditional welding, this not only does not damage the original structure, but also forms a rigid connection that can actively tighten the beam and effectively prevent displacement and slippage.

[0145] Using a set of modular support bases with decreasing height and fixed connection, the jacking process can be carried out in a cyclical manner according to standard steps, which is highly efficient; the rotating ball head at the top can automatically adapt to the uneven bottom of the beam, achieving full-area support and avoiding the risk of local crushing; through the combination of methods and devices, construction efficiency is further improved and the construction cycle is shortened.

[0146] Through the system integration of modular devices, the process of jacking and leveling construction has been standardized and the operation has been made more precise. The traditional extensive operation that relies on experience has been transformed into a controllable industrial process, which improves construction safety and quality while significantly reducing the uncertainty of human factors.

[0147] Example 2

[0148] like Figures 14-18 As shown, this embodiment provides a longitudinal limiting component for expansion joints used in bridge jacking preparation, including a limiting component body 100. The limiting component body 100 includes two fixing seats 120 respectively disposed on both sides of the expansion joint of adjacent box girders. The fixing seat 120 includes a base plate 220 connected to the box girder. A vertical plate 240 is provided at the upper end surface of the base plate 220, perpendicular to the base plate 220. A connecting rod 130 is provided between the two fixing seats 120, with both ends passing through the vertical plate 240. An adjustment and fixing mechanism is provided at the connection between the connecting rod 130 and the vertical plate 240. The adjustment and fixing mechanism is used to assist the connecting rod 130 in passing through the vertical plate 240 and to connect the two fixing seats 120.

[0149] In this embodiment, the main body 100 of the limiting component is installed at the expansion joint of the adjacent box girder. When installing the main body 100 of the limiting component, the construction workers first set up multiple bolt holes on the upper surface of the opposite end of the adjacent box girder. Then, the construction workers place the fixing seats 120 one by one along the width direction of the box girder. After the placement is completed, the fixing seats 120 are fixed by passing bolts through the bottom plate 220 of the fixing seat 120 and extending into the bolt holes. Then, the construction workers pass the connecting rod 130 through the vertical plate 240 on the corresponding fixed seat 120. Finally, the first nuts 140 on both sides of the vertical plate 240 are turned so that the first nuts 140 are pressed against the vertical plate 240, thereby fixing the fixing seat 120. This prevents the fixing seat 120 from being displaced or twisted by the adjacent box girders during the box girder lifting process, which would threaten the safety of the bridge structure.

[0150] In this embodiment, the adjusting and fixing mechanism includes a first limiting hole 410 provided on the vertical plate 240, a sliding seat 150 provided at the first limiting hole 410, and a first sleeve 320 passing through the first limiting hole 410. The first sleeve 320 is provided with mounting rings 330 at both ends of its sidewalls. The ratio of the outer diameter of the first sleeve 320 to the diameter of the first limiting hole 410 is 2:3. The vertical plate 240 is provided with a first nut 140 on both sides for threaded engagement with the connecting rod 130.

[0151] In this embodiment, when installing the connecting rod 130, the construction personnel first pass both ends of the connecting rod 130 through the first sleeve 320. Since the diameter of the first limiting hole 410 is larger than the outer diameter of the first sleeve 320, the first sleeve 320 can slide within the first limiting hole 410. This allows the construction personnel to easily pass both ends of the connecting rod 130 through the fixing seat 120 on the bridge by adjusting the position of the first sleeve 320. This avoids the need to re-erect bolt holes and further damage the bridge due to deviations in the positions of the corresponding fixing seats 120 on adjacent bridges when the construction personnel connect the fixing seats 120 to the bridge.

[0152] In this embodiment, a plurality of diagonal bracing plates 230 are provided between the base plate 220 and the vertical plate 240, which are spaced apart along the width direction of the base plate 220.

[0153] In this embodiment, the diagonal brace 230 connects the base plate 220 and the vertical plate 240, thereby further strengthening the overall structural strength of the fixed base 120.

[0154] In this embodiment, the base plate 220 is provided with a plurality of first through holes 210 spaced apart along the length of the base plate 220.

[0155] In this embodiment, construction workers can easily connect the base plate 220 to the bridge by inserting bolts through the first through hole 210 on the base plate 220 and into the bolt holes drilled on the bridge.

[0156] In this embodiment, a plurality of reinforcing plates 310 are provided between the mounting ring 330 and the side wall of the first sleeve 320, distributed circumferentially along the first sleeve 320.

[0157] Through this embodiment, the reinforcing plate 310 can further enhance the overall structural strength of the sliding seat 150 and prevent the sliding seat 150 from being crushed and damaged by the first nut 140.

[0158] In this embodiment, the first limiting hole 410 is disposed between adjacent inclined bracing plates 230.

[0159] In this embodiment, the inclined support plate 230 is provided with multiple holes, which in turn provides multiple first limiting holes 410, and multiple connecting rods 130 connect the two fixing seats 120, thereby improving the overall connection strength of the limiting component body 100.

[0160] This embodiment provides a bridge jacking and leveling device, including the aforementioned longitudinal limiting component for expansion joints.

[0161] Example 3

[0162] like Figures 19-24 As shown, this embodiment provides a vertical displacement observation component for use in the construction of a multidimensional monitoring network, including an observation component body 600. The observation component body 600 includes a telescopic rod 610 for connecting to the bottom of the box girder and a guide seat 620 for connecting to the cap beam. The guide seat 620 includes a first measuring ruler 710. Both sides of the first measuring ruler 710 are provided with mounting plates 730 arranged along the length direction of the first measuring ruler 710. The first measuring ruler 710 and the mounting plates 730 together form a guide groove 720 into which the telescopic rod 610 extends.

[0163] In this embodiment, when installing the main body 600 of the observation component, bolt holes are first drilled at the bottom of the box girder. Then, the construction workers extend the upper end of the telescopic rod 610 to the bolt holes and fix the telescopic rod 610 to the box girder with bolts. Next, bolt holes are drilled on the cap beam, and the guide seat 620 is placed at the bolt holes and fixed with bolts. During the fixing of the guide seat 620, the telescopic rod 610 extends into the guide groove 720 on the guide seat 620 and covers the scale on the first measuring scale 710, so that the lower end of the telescopic rod 610 is exactly at the 0 mark line of the first measuring scale 710. During the rising of the box girder, the box girder will drive the telescopic rod 610 to rise, thereby causing the telescopic rod 610 to gradually move from the first measuring scale 710 and become exposed on the first measuring scale 710. After the box girder stops rising, construction workers observe the scale value on the first measuring ruler 710 at the lower end of the telescopic rod 610 to determine the height of the box girder's rise. Compared with existing technologies, this device provides a precise vertical movement trajectory for the telescopic rod 610 through the guide groove 720 structure formed by the first measuring ruler 710 and the mounting plates 730 on both sides, effectively eliminating measurement errors caused by lateral swaying. At the same time, it ensures that the rod body maintains a constant distance from the scale surface during the measurement process, achieving millimeter-level measurement accuracy. This component can serve as an independent measurement system to provide visualized displacement data, and it can also complement the data of the electronic sensor system. When the automated system malfunctions, workers can directly read the scale of the first measuring ruler 710 to obtain the true displacement value, forming a reliable emergency verification plan.

[0164] In this embodiment, the telescopic rod 610 includes a first hollow rod 820, inside which is provided a sliding rod 830 arranged along the length direction of the first hollow rod 820; the side wall of the first hollow rod 820 away from the first measuring ruler 710 is provided with a strip-shaped through hole 920 arranged along the length direction of the first hollow rod 820, and the side wall of the sliding rod 830 is provided with a first threaded rod 1101 passing through the strip-shaped through hole 920, and one end of the first threaded rod 1101 passing through the strip-shaped through hole 920 is provided with a second nut 1102 that is threadedly engaged with the first threaded rod 1101.

[0165] In this embodiment, after the construction worker inserts the telescopic rod 610 into the guide groove 720, the worker pushes the first threaded rod 1101 along the strip-shaped through hole 920, causing the sliding rod 830 to move along the first hollow rod 820. Ultimately, the lower end of the sliding rod 830 moves to the 0 mark of the first measuring scale 710, facilitating adjustment of the sliding rod 830 so that its lower end is at the 0 mark, allowing for subsequent observation. After the sliding rod 830 has moved, the worker rotates the second nut 1102 to press it against the first hollow rod 820, thus connecting and fixing the sliding rod 830 to the first hollow rod 820, preventing the sliding rod 830 from moving.

[0166] In this embodiment, one end of the first hollow rod 820 is provided with a connecting block 810 for connecting the box girder and the first hollow rod 820; the connecting block 810 includes a first flat plate 1001, and two first clamping plates 1002 are provided at one end face of the first flat plate 1001, which are perpendicular to the first flat plate 1001. The two first clamping plates 1002 and the first flat plate 1001 together form a clamping interval 1003 into which one end of the first hollow rod 820 extends; a first bolt hole 910 is provided on the side wall of the first hollow rod 820 extending into the clamping interval 1003, and a second bolt hole 1004 corresponding to the first bolt hole 910 is provided on the side wall of each of the two first clamping plates 1002; and a plurality of third bolt holes 1005 are provided on the first flat plate 1001.

[0167] In this embodiment, when installing the telescopic rod 610, the construction personnel first insert one end of the first hollow rod 820 into the clamping section 1003 on the connecting block 810, and then connect the first hollow rod 820 and the connecting block 810 by passing bolts through the first clamping plate 1002 and the second bolt hole 1004 and the first bolt hole 910 on the first hollow rod 820. When connecting the telescopic rod 610 to the box girder, bolt holes are first drilled at the bottom of the box girder, then the third bolt hole 1005 on the first flat plate 1001 is aligned with the bolt holes, and finally the first flat plate 1001 and the box girder are fixedly connected by bolts, which facilitates the construction personnel to connect the telescopic rod 610 and the box girder.

[0168] In this embodiment, the mounting plate 730 is provided with a plurality of fourth bolt holes 740 spaced apart along the length of the mounting plate 730.

[0169] In this embodiment, construction workers can connect the mounting plate 730 to the cover beam by inserting a bolt through the fourth bolt hole 740 and into the bolt hole on the cover beam, thereby facilitating the construction workers to fix the guide seat 620.

[0170] In this embodiment, the first measuring ruler 710 is welded to the mounting plate 730.

[0171] This embodiment facilitates the assembly of the guide seat 620 by construction personnel.

[0172] This embodiment provides a bridge jacking and leveling device, including the aforementioned vertical displacement observation component.

[0173] Example 4

[0174] like Figures 29-35As shown, this embodiment provides a leveling steel plate installation slope adjustment component for box girder during the support system modification process. It includes a slope adjustment component body 1600 set at the bottom of the box girder. The slope adjustment component body 1600 includes two connectors 1602 located on both sides of the box girder. Each connector 1602 includes a connecting seat 1701 for connecting to the bottom side wall of the box girder. A first lifting plate 1601 for supporting the steel plate is provided below the connecting seat 1701. A lifting mechanism is provided between the first lifting plate 1601 and the connecting seat 1701. The lifting mechanism is used to push the first lifting plate 1601 to move towards the bottom of the box girder.

[0175] In this embodiment, during installation, two slope adjustment component bodies 1600 are first installed at intervals along the length of the box girder. Connectors 1602 on the slope adjustment component bodies 1600 are located on both sides of the bottom of the box girder. When installing the connectors 1602, bolt holes are first drilled on the side walls of both sides of the bottom of the box girder. Bolts are then passed through the connecting seats 1701 to fix the connecting seats 1701 to the side walls of the box girder. Afterwards, the construction workers pass the upper end of the second threaded rod 1703 through the connecting seat 1701, and the lower end... Passing through the first lifting plate 1601 and the second lifting plate 1704, and screwing on the third nut 2101 above the connecting seat 1701 and below the second lifting plate 1704, the leveling steel plate is finally placed on the first lifting plate 1601. Then, by rotating the third nut 2101 below the second lifting plate 1704, the third nut 2101 rises along the second threaded rod 1703, thereby pushing the first lifting plate 1601, the second lifting plate 1704, and the leveling steel plate to rise until the leveling steel plate rises to... The leveling steel plate is bolted to the bottom surface of the box girder and then attached to it. The component uses symmetrically arranged connectors 1602 on both sides, firmly connected to the bottom sidewall of the box girder, forming a stable load-bearing foundation. The leveling steel plate is mechanically lifted and fully attached to the bottom surface of the box girder, ensuring uniform transmission of lifting force and effectively avoiding localized stress concentration. The leveling steel plate is raised and lowered by rotating the third nut 2101, achieving millimeter-level precise control of its height. Unlike traditional slope adjustment methods that rely on operating jacks and require indirect judgment of the effect through remote sensors and computer screens, this component's mechanical adjustment method allows construction personnel to directly rotate the nut and visually observe the rising of the lifting plate and steel plate. This avoids potential signal delays and data misreading issues in electronic systems, significantly reducing the operational threshold and complexity, making the operation process clear and straightforward. The connections between components are mainly achieved through bolts and threaded rods, resulting in a high degree of standardization and quick and easy on-site assembly.

[0176] In this embodiment, the connecting seat 1701 includes a parallel plate 1804 arranged parallel to the top surface of the box girder, an inclined plate 1803 arranged at one end of the parallel plate 1804, a fixing plate 1801 for connecting the parallel plate 1804 and the inclined plate 1803 at both ends, and a fifth bolt hole 1802 is provided at the inclined plate 1803.

[0177] In this embodiment, the inclination of the inclined plate 1803 is the same as the inclination of the bottom side wall of the box girder, which facilitates the inclined plate 1803 to fit against the side wall of the box girder and keeps the parallel plate 1804 horizontal. By aligning the fifth bolt hole 1802 with the bolt hole opened on the side wall of the box girder, and then inserting the limiting bolt 1702 through the fifth bolt hole 1802 into the bolt hole, the inclined plate 1803 and the box girder are fixedly connected. The fixing plate 1801 connects the parallel plate 1804 and the inclined plate 1803, further strengthening the overall structural strength of the connecting seat 1701.

[0178] In this embodiment, the lifting mechanism includes a second lifting plate 1704 for supporting the first lifting plate 1601. A guide strip hole 1805 is provided at the parallel plate 1804. The lifting mechanism includes a second threaded rod 1703 passing through the guide strip hole 1805, the second lifting plate 1704 and the first lifting plate 1601. A third nut 2101 that is threadedly engaged with the second threaded rod 1703 is provided above the parallel plate 1804 and below the second lifting plate 1704.

[0179] In this embodiment, construction workers can rotate the third nut 2101 to push the first lifting plate 1601 and the second lifting plate 1704 along the second threaded rod 1703, which makes it easier for construction workers to push the adjusting steel plate above the first lifting plate 1601 to the bottom of the box girder.

[0180] In this embodiment, the guide strip hole 1805 is provided along the length direction of the parallel plate 1804.

[0181] Through this embodiment, construction workers can move the two connecting seats 1701 and adjust the distance between them, so that the two connecting seats 1701 can adapt to box girders of different widths.

[0182] In this embodiment, a second scale 1902 is provided on the side wall of the first lifting plate 1601.

[0183] In this embodiment, after the construction personnel place the leveling steel plate onto the first lifting plate 1601, they observe whether the two ends of the leveling steel plate correspond to the same position on the second scale 1902 on the two first lifting plates 1601, to prevent the leveling steel plate from tilting and causing deviation when connecting with the bottom of the box girder.

[0184] In this embodiment, both ends of the first lifting plate 1601 are provided with sixth bolt holes 1901 for the second threaded rod 1703 to pass through.

[0185] In this embodiment, the sixth bolt hole 1901 restricts the left and right swaying of the first lifting plate 1601, making the first lifting plate 1601 more stable during the rising process; the first lifting plate 1601 is made of square steel.

[0186] In this embodiment, the second lifting plate 1704 is provided with a seventh bolt hole 2001 for the second threaded rod 1703 to pass through.

[0187] This embodiment facilitates the installation of the second threaded rod 1703 through the second lifting plate 1704 by construction personnel.

[0188] This embodiment provides a bridge jacking and leveling device, including the aforementioned box girder leveling steel plate installation slope adjustment component.

[0189] Example 5

[0190] like Figures 25-28 As shown, this embodiment provides an auxiliary component for installing a leveling steel plate for a box girder after synchronous jacking during the modification of the support system. The component includes a main body 1200, which includes a support frame 1202 for supporting the support 1201. The support frame 1202 includes a rectangular upper support plate 1401. A connecting mechanism is provided between the upper support plate 1401 and the support 1201 to connect them. Support legs 1302 perpendicular to the upper support plate 1401 are provided at each of the four corners of the upper support plate 1401. A pushing mechanism is provided at the end of the support leg 1302 away from the upper support plate 1401. The pushing mechanism cooperates with the connecting mechanism to adjust the levelness of the support 1201.

[0191] In this embodiment, using the auxiliary component body 1200, a new support 1201 is lifted. First, the construction workers place the new support 1201 on the upper support plate 1401. Then, the support 1201 is connected to the upper support plate 1401 via a connecting mechanism to prevent movement of the support 1201 on the upper support plate 1401. Next, the construction workers activate the pushing mechanism below the support leg 1302 to lift the entire support frame 1202, causing the support 1201 to rise. Once the support 1201 reaches a suitable height, the construction workers adjust the support angles of the support frame 1202 and the support 1201 by adjusting the four pushing mechanisms respectively, ensuring that the support 1201 fits snugly against the leveling steel plate on the bottom surface of the box girder. If small gaps exist, they are filled with thin steel sheets. Finally, the support 1201 is welded to the leveling steel plate. This component realizes the lifting of the support 1201. The integrated operation of positioning, lifting, and leveling allows for simultaneous vertical positioning and horizontal attitude adjustment of the support 1201 via the pushing mechanism of the support leg 1302. It enables precise three-dimensional spatial attitude adjustment of the support 1201, ensuring a stress-free, full-area fit with the box girder leveling steel plate. The dual guarantee of mechanical connection and fine-tuning filling ensures the stability of the installation process and fundamentally eliminates the risk of support eccentricity, providing a long-term reliable support foundation for the bridge. Traditionally, lifting the support relies on jacks, and leveling relies on manual padding—separate processes. This component combines these two processes, using the pushing mechanism under the support leg 1302 to complete lifting and high-precision leveling in situ at the installation position of the support 1201. This simplifies the process, reduces reliance on and interference with the main lifting system, simplifies operation steps, and avoids dependence on the technical skills of construction personnel.

[0192] In this embodiment, the upper support plate 1401 includes two parallel first connecting plates 1301 and two parallel second connecting plates 1306, which are connected end to end in sequence; between the two second connecting plates 1306, there are multiple third connecting plates 1305 spaced apart along the length direction of the first connecting plates 1301, and multiple first holes 1304 spaced apart along the length direction of the third connecting plates 1305 are provided at both ends of the sidewalls of the third connecting plates 1305; the connecting mechanism includes an L-shaped pin 1307, which passes through the support 1201 and the first holes 1304 to limit the position of the support 1201.

[0193] In this embodiment, when installing the support plate 1401, two first connecting plates 1301 and two second connecting plates 1306 are connected by welding. Both the first connecting plates 1301 and the second connecting plates 1306 are made of square steel. The third connecting plate 1305 is welded to the second connecting plates 1306, and the third connecting plate 1305 is also made of square steel. When the construction personnel place the support 1201 on the third connecting plate 1305, the through hole at the bottom of the support 1201 is aligned with the first hole 1304 on the third connecting plate 1305. Then, the pin rod 1307 passes through the first hole 1304 and the through hole at the bottom of the support 1201 to limit the support 1201 and prevent the support 1201 from moving on the third connecting plate 1305. By setting multiple first holes 1304, supports 1201 of different sizes can be accommodated.

[0194] In this embodiment, both ends of the two first connecting plates 1301 are provided with second holes 1402 corresponding to the first holes 1304.

[0195] In this embodiment, by providing multiple second holes 1402, the upper support plate 1401 can adapt to and limit supports 1201 of different sizes.

[0196] In this embodiment, the support leg 1302 includes a fourth connecting plate 1501 connected to the first connecting plate 1301, and a U-shaped clamping plate 1502 is connected to the lower end of the fourth connecting plate 1501.

[0197] In this embodiment, the fourth connecting plate 1501 is made of square steel, and the fourth connecting plate 1501 is welded to the clamping plate 1502, which is made of channel steel.

[0198] In this embodiment, the pushing mechanism includes a hydraulic jack 1303 disposed below the card plate 1502.

[0199] In this embodiment, the hydraulic jack 1303 pushes the support leg 1302 and lifts the support frame 1202, thereby ensuring that the support 1201 on the support frame 1202 can fit with the leveling steel plate at the bottom of the box girder.

[0200] In this embodiment, a leveling bubble tube 1308 is provided on the upper surface of each of the two first connecting plates 1301 and the two second connecting plates 1306.

[0201] In this embodiment, when the construction personnel are leveling the support frame 1202, they can observe the leveling bubble tube 1308 to ensure that the bubble in the leveling bubble tube 1308 is in the center, thereby making it easier for the construction personnel to adjust the support frame 1202 to be level.

[0202] This embodiment provides a bridge jacking and leveling device, including the above-mentioned auxiliary component for installing the leveling steel plate of the support after synchronous jacking of box girder.

[0203] Example 6

[0204] like Figures 1-7 As shown, this embodiment provides a limiting component, including a component body 3100. The component body 3100 includes a stabilizing seat 3120 for connecting with a bridge base. A diagonal bracing mechanism 3110 is provided above the stabilizing seat 3120. The diagonal bracing mechanism 3110 includes a first diagonal bracing plate 3220 for supporting the bridge and a second diagonal bracing plate 3210 for supporting the first diagonal bracing plate 3220. A plurality of limiting mechanisms are provided at the stabilizing seat 3120 at intervals along the length direction of the stabilizing seat 3120. The limiting mechanisms are used to fix the first diagonal bracing plate 3220 and the second diagonal bracing plate 3210.

[0205] In this embodiment, before lifting the beam, the construction workers set lifting points and limiting points on the bridge base below the beam to be lifted. The lifting points are located directly below the original supports or web of the main beam, and the limiting points are located at both ends of the bridge base. After the limiting points are determined, multiple through holes are drilled at both ends of the bridge base sidewalls using an electric drill. These through holes are spaced apart along the length of the bridge base. After the through holes are drilled, the construction workers first place the stabilizing seat 3120 on the main body 3100 of the component at the through hole position, aligning the through hole on the bridge base with the fifth through hole 3310 on the connecting plate 3250. Then, bolts are used to connect the stabilizing seat 3120 to the bridge base through the through hole. After the stabilizing seat 3120 is fixed, the construction workers connect the diagonal bracing mechanism 3110 to the stabilizing seat 3120. One end of a diagonal brace 3220 extends toward a sliding plate 3230. Then, a second threaded rod 3450 passes through a third through hole 3320 on the sliding plate 3230 and a fourth through hole 3620 on the first diagonal brace 3220. Then, a second nut 3460 is screwed onto both ends of the second threaded rod 3450 to rotatably connect the first diagonal brace 3220 and the sliding plate 3230. Then, the second diagonal brace 3210 and the first diagonal brace 3220 are rotatably connected in the same way through the first threaded rod 3420 and the first nut 3410. Then, the first diagonal brace 3220 is adjusted to form a tight contact with the bottom or side surface of the beam plate. Finally, the lower end of the second diagonal brace 3210 is fixedly connected to the sliding plate 3230 through the third threaded rod 3440 and the third nut 3430, thereby supporting the first diagonal brace 3220.

[0206] After the limit components are installed, the jacks are started to lift the bridge in stages, lifting a certain distance each time, with the lifting distance gradually decreasing each time. After each stage of lifting, the jacks stop lifting. At this time, the construction personnel loosen the connecting bolts between the stabilizer 3120 and the bridge base, adjust the position of the stabilizer 3120, and then reconnect the stabilizer 3120 to the bridge base with bolts. After the stabilizer 3120 is adjusted, the connection position between the first diagonal brace 3220 and the second diagonal brace 3210 and the stabilizer 3120 is adjusted so that the first diagonal brace 3220 forms a tight contact with the bottom or side of the beam.

[0207] Compared with traditional structures, the limiting component allows construction workers to continuously adjust its position and support angle according to the lifting process of the beam, enabling the limiting component to follow the rising trajectory of the beam and change its support state to prevent the beam from deviating during the lifting process, which is difficult to correct effectively. At the same time, the limiting component does not require welding or driving in steel wedges to fix it, causing less damage to the original bridge abutment concrete structure.

[0208] In this embodiment, the first inclined plate 3220 and the second inclined plate 3210 have U-shaped cross sections. The second inclined plate 3210 has a first through hole 3520 at both ends of its sidewall. The first inclined plate 3220 has a second through hole 3610 at its sidewall, which corresponds to the first through hole 3520. The first inclined plate 3220 has a first threaded rod 3420 that is arranged along the width direction of the first inclined plate 3220 and passes through the first through hole 3520 and the second through hole 3610. The first threaded rod 3420 has a first nut 3410 at both ends that is threadedly engaged with the first threaded rod 3420.

[0209] In this embodiment, the first diagonal brace 3220 and the second diagonal brace 3210 are made of channel steel. The first threaded rod 3420 and the first nut 3410 cooperate to connect the second diagonal brace 3210 and the first diagonal brace 3220, so that the second diagonal brace 3210 and the first diagonal brace 3220 can rotate at the connection point. This allows construction personnel to adjust the support angle of the first diagonal brace 3220 by adjusting the rotation angle of the second diagonal brace 3210 and the first diagonal brace 3220, so that the first diagonal brace 3220 can fit tightly with the bottom or side of the beam or slab. At the same time, it can adapt to the bottom or side of the beam or slab with different inclinations.

[0210] In this embodiment, the stabilizing base 3120 includes a sliding plate 3230 with a U-shaped cross-section. The limiting mechanism includes a plurality of third through holes 3320 disposed on the side walls of both sides of the sliding plate 3230. The plurality of third through holes 3320 are spaced apart along the length direction of the sliding plate 3230. The first inclined support plate 3220 is provided with a fourth through hole 3620 corresponding to the third through hole 3320 at one end of its side wall near the sliding plate 3230. The first inclined support plate 3220 is provided with a second threaded rod 3450 disposed along the width direction of the first inclined support plate 3220 and passing through the fourth through hole 3620 and the third through hole 3320 at both ends. The second threaded rod 3450 is provided with a second nut 3460 threadedly engaged with the second threaded rod 3450 at both ends.

[0211] The second inclined plate 3210 is provided with a third threaded rod 3440 at one end near the sliding plate 3230, which is arranged along the width direction of the second inclined plate 3210. Both ends of the third threaded rod 3440 pass through the first through hole 3520 and the third through hole 3320, and both ends of the third threaded rod 3440 are provided with a third nut 3430 that is threadedly engaged with the third threaded rod 3440.

[0212] This embodiment facilitates the connection between the first inclined plate 3220 and the sliding plate 3230, as well as the second inclined plate 3210 and the sliding plate 3230, by the cooperation of the second threaded rod 3450 and the second nut 3460, the third threaded rod 3440 and the third nut 3430.

[0213] In this embodiment, both sides of the sliding plate 3230 are provided with connecting plates 3250 arranged along the length direction of the sliding plate 3230, and both ends of the connecting plates 3250 are provided with connecting blocks 3240 for connecting the sliding plate 3230 and the connecting plates 3250; the connecting blocks 3240, the sliding plate 3230 and the connecting plates 3250 together constitute a storage area for the third nut 3430 and the second nut 3460 to extend into; the connecting plates 3250 are provided with a plurality of fifth through holes 3310 spaced apart along the length direction of the connecting plates 3250.

[0214] In this embodiment, the construction personnel pass the bolts through the through holes drilled at both ends of the bridge base and through the fifth through hole 3310 on the connecting plate 3250 to connect the connecting plate 3250 to the bridge base. Through the storage area, the third nut 3430 and the second nut 3460 will extend into the storage area to prevent the third nut 3430 and the second nut 3460 from affecting the connection between the sliding plate 3230 and the bridge base.

[0215] In this embodiment, mounting rings 3510 are provided on both ends of the second diagonal brace 3210 near the first through hole 3520.

[0216] In this embodiment, the mounting ring 3510 is welded to the side wall of the second diagonal brace 3210 and allows the third threaded rod 3440 to pass through. The mounting ring 3510 can fill the gap between the second diagonal brace 3210 and the sliding plate 3230, preventing the second diagonal brace 3210 from slipping when supporting the first diagonal brace 3220, and also improving the structural strength of the connection between the second diagonal brace 3210 and the sliding plate 3230.

[0217] In this embodiment, the first inclined support plate 3220 is provided with a first arc-shaped surface 3630 at one end near the sliding plate 3230.

[0218] In this embodiment, the first arc-shaped surface 3630 enables the first inclined support plate 3220 to rotate and adjust the support angle so that it will not be blocked by the sliding plate 3230.

[0219] In this embodiment, the second inclined plate 3210 has a second arc-shaped surface 3530 at both ends.

[0220] In this embodiment, the second arc-shaped surface 3530 ensures that the second inclined support plate 3210 is not blocked by the first inclined support plate 3220 and the sliding plate 3230 when it rotates, thus preventing it from being unable to rotate.

[0221] This embodiment includes a lifting device, which includes the aforementioned limiting component.

[0222] Example 7

[0223] like Figures 8-13 As shown, this embodiment provides a temporary support assembly, characterized in that: it includes a support assembly body 3800 disposed between the beam and the pier, the support assembly body 3800 includes a plurality of support seats 3820 spaced apart along the height direction of the pier, and the top of the support seat 3820 is provided with a rotating ball head 3810 for adjusting the support angle; the height of the plurality of support seats 3820 gradually decreases from bottom to top; adjacent support seats 3820 are fixedly connected.

[0224] In this embodiment, before lifting the beam, construction workers set lifting points on the bridge base below the beam to be lifted. These lifting points are located directly below the existing supports or the web of the main beam. Then, jacks are installed at the lifting points, and temporary support components are simultaneously assembled on one side of the jacks. When installing the temporary support components, support seats 3820 of different heights are first stacked according to the height between the bridge base and the beam, until the support seats 3820 can reach the beam. Then, the supports are connected... When mounting the support 3820, bolts are passed through the bolt holes 31001 on the first baffle 31003 at the upper end of the lower support 3820 and the bolt holes 31001 on the second baffle 31004 at the lower end of the upper support 3820 to fix two adjacent support 3820s together. Then, the support 3820s are connected and stacked in the same way. After the support 3820s are stacked to the required height, the construction workers adjust the rotating ball head 3810 at the top to make it fully fit with the bottom surface of the beam and slab to form auxiliary support.

[0225] After the temporary support components are installed, start the jacks for staged lifting, lifting a certain distance each time, with the lifting distance gradually decreasing each time. After each stage of lifting, stop lifting with the jacks, remove the rotating ball head 3810 from the top of the support base 3820, stack support bases 3820 to a suitable height, and then place the rotating ball head 3810 on top of the support base 3820. Adjust the rotating ball head 3810 at the top to ensure it is fully in contact with the bottom surface of the beam slab. Then lower the jacks to start the next cycle of lifting. Repeat the above operation until the beam slab reaches the expected height, then remove the jacks and temporary support components.

[0226] Compared to existing technologies, the temporary support assembly features a top rotating ball head 3810 that automatically adjusts its angle, ensuring that the support seat 3820 maintains a tight fit across the entire beam regardless of its flatness, evenly distributing the concentrated force of the jack into a surface load. This avoids the risk of localized crushing of the beam concrete caused by point or line contact with traditional rigid pads. The design of all support seats having the same width but progressively decreasing height eliminates the need for complex measurements and calculations to determine the required pad height after each jacking operation, standardizing the construction process and speeding up the process. The jacking stroke and final posture at each step are controllable, reducing the risk of over-jacking or insecure support due to measurement or judgment errors. The fixed connection between adjacent support seats 3820 solves the problems of poor overall integrity and low stiffness in traditional pad stacking systems. The fixed connection ensures that the support system can effectively resist bending moments generated by horizontal forces or eccentric loads, resulting in greater stability.

[0227] In this embodiment, the support base 3820 includes a connecting sleeve 31005. The two ends of the connecting sleeve 31005 are respectively provided with a first baffle 31003 and a second baffle 31004 fixedly connected to the connecting sleeve 31005. The connecting sleeve 31005, the first baffle 31003 and the second baffle 31004 together constitute a storage area 31201 for storing concrete.

[0228] In this embodiment, when the construction workers are making the support base 3820, one end of the connecting sleeve 31005 is first welded to the second baffle 31004. After the welding is completed, concrete is injected into the connecting sleeve 31005 until the inside of the connecting sleeve 31005 is filled with concrete. Finally, the first baffle 31003 is welded to the upper end of the connecting sleeve 31005 to prevent concrete leakage. The concrete is stored in the storage area 31201, thereby further strengthening the overall structural strength of the support base 3820.

[0229] In this embodiment, the first baffle 31003 and the second baffle 31004 are rectangular in shape. Bolt holes 31001 are provided at the corners of the first baffle 31003 and the second baffle 31004. The first baffle 31003 and the second baffle 31004 of the adjacent support base 3820 are connected by bolts passing through the bolt holes 31001.

[0230] In this embodiment, after stacking the support bases 3820, two adjacent support bases 3820 are connected by bolts to prevent the two adjacent support bases 3820 from detaching.

[0231] In this embodiment, the second baffle 31004 is provided with a plurality of limiting holes 31006 distributed circumferentially along the connecting sleeve 31005, and the first baffle 31003 is provided with a reinforcing block 31002 at one end face away from the second baffle 31004 that corresponds to the limiting holes 31006 and passes through the limiting holes 31006.

[0232] In this embodiment, when it is necessary to stack support bases 3820, the reinforcing block 31002 on the first baffle 31003 of the lower support base 3820 will pass through the limiting hole 31006 on the second baffle 31004 of the upper support base 3820, thereby limiting the upper support base 3820 and making it convenient for construction personnel to install bolts to connect the upper and lower support bases 3820.

[0233] In this embodiment, the connecting sleeve 31005 is welded to the first baffle 31003 and the second baffle 31004.

[0234] In this embodiment, the first baffle 31003 and the second baffle 31004 are connected to the connecting sleeve 31005 by welding, so that the connecting sleeve 31005, the first baffle 31003 and the second baffle 31004 are integrated, which improves the structural strength of the support base 3820.

[0235] In this embodiment, the reinforcing block 31002 and the first baffle 31003 together form a limiting interval 31101 for limiting the rotating ball head 3810.

[0236] In this embodiment, the limiting interval 31101 can block the movement of the rotating ball head 3810 and prevent the rotating ball head 3810 from detaching from the support base 3820.

[0237] The model number of the 3810 swivel ball head is QTP-200.

[0238] This embodiment includes a lifting device, which includes the aforementioned temporary support component.

[0239] It is readily understood that those skilled in the art can combine, split, or reorganize the embodiments provided in this application to obtain other embodiments, all of which do not exceed the protection scope of this application.

[0240] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the embodiments shown are only part of the embodiments of the present invention. The actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A synchronous jacking and dynamic leveling system for bridges, characterized in that: It includes a lifting execution module, a lateral constraint module, a dynamic monitoring module, a support leveling module, a temporary support module, and an overall stabilization module; The jacking execution module includes a slope adjustment component body (1600) for driving the local lifting and lowering of the box girder; the lateral constraint module includes a limiting component body (100) for limiting the lateral displacement of adjacent box girders during the jacking process; the dynamic monitoring module includes an observation component body (600) for real-time monitoring of the vertical displacement of the box girder and feeding back the monitoring data to the jacking execution module and the support leveling module. The bearing leveling module includes an auxiliary component body (1200) for adjusting the levelness of the bearing according to the feedback from the dynamic monitoring module during the jacking process; the temporary support module includes a temporary support component for providing temporary support during the jacking process and working in conjunction with the bearing leveling module to maintain the temporary stability of the bridge; the overall stability module includes a limiting component for providing lateral support to the bridge structure during the jacking process.

2. The synchronous jacking and dynamic leveling system for bridges according to claim 1, characterized in that: The limiting component body (100) includes two fixing seats (120) respectively disposed on both sides of the expansion joint of adjacent box girders. The fixing seat (120) includes a base plate (220) connected to the box girder. A vertical plate (240) perpendicular to the base plate (220) is provided on the upper end surface of the base plate (220). A connecting rod (130) is provided between the two fixing seats (120) with both ends passing through the vertical plate (240). An adjustment and fixing mechanism is provided at the connection between the connecting rod (130) and the vertical plate (240). The adjustment and fixing mechanism is used to assist the connecting rod (130) in passing through the vertical plate (240) and connecting the two fixing seats (120). The main body (600) of the observation component includes a telescopic rod (610) for connecting to the bottom of the box girder, and a guide seat (620) for connecting to the cap beam; the guide seat (620) includes a first measuring scale (710), and mounting plates (730) are provided on both sides of the first measuring scale (710) along the length direction of the first measuring scale (710). The first measuring scale (710) and the mounting plates (730) together form a guide groove (720) into which the telescopic rod (610) extends; The auxiliary component body (1200) includes a support frame (1202) for supporting the support (1201). The support frame (1202) includes a rectangular upper support plate (1401). A connecting mechanism is provided between the upper support plate (1401) and the support (1201) for connecting the upper support plate (1401) and the support (1201). Each of the four corners of the upper support plate (1401) is provided with a support leg (1302) perpendicular to the upper support plate (1401). A pushing mechanism is provided at the end of the support leg (1302) away from the upper support plate (1401). The pushing mechanism is used to cooperate with the connecting mechanism to adjust the level of the support (1201). The slope adjustment component body (1600) includes two connectors (1602) located on both sides of the box girder. Each connector (1602) includes a connecting seat (1701) for connecting to the bottom side wall of the box girder. A first lifting plate (1601) for supporting steel plates is provided below the connecting seat (1701). A lifting mechanism is provided between the first lifting plate (1601) and the connecting seat (1701). The lifting mechanism is used to push the first lifting plate (1601) to move towards the bottom of the box girder.

3. The synchronous jacking and dynamic leveling system for bridges according to claim 2, characterized in that: The adjusting and fixing mechanism includes a first limiting hole (410) provided on the vertical plate (240), a sliding seat (150) provided at the first limiting hole (410), the sliding seat (150) includes a first sleeve (320) passing through the first limiting hole (410), and mounting rings (330) are provided at both ends of the side walls of the first sleeve (320); the ratio of the outer diameter of the first sleeve (320) to the diameter of the first limiting hole (410) is 2:3; and a first nut (140) for threaded engagement with the connecting rod (130) is provided on both sides of the vertical plate (240).

4. A synchronous jacking and dynamic leveling system for bridges according to claim 3, characterized in that: The telescopic rod (610) includes a first hollow rod (820), inside which is provided a sliding rod (830) arranged along the length direction of the first hollow rod (820); a strip-shaped through hole (920) arranged along the length direction of the first hollow rod (820) is provided on the side wall away from the first measuring scale (710); a first threaded rod (1101) passing through the strip-shaped through hole (920) is provided on the side wall of the sliding rod (830); and a second nut (1102) threadedly engaged with the first threaded rod (1101) is provided at one end of the first threaded rod (1101) passing through the strip-shaped through hole (920).

5. A synchronous jacking and dynamic leveling system for bridges according to claim 4, characterized in that: One end of the first hollow rod (820) is provided with a connecting block (810) for connecting the box girder and the first hollow rod (820); the connecting block (810) includes a first plate (1001), and two first clamping plates (1002) are provided at one end face of the first plate (1001) perpendicular to the first plate (1001). The two first clamping plates (1002) and the first plate (1001) together form a clamping interval (1003) into which one end of the first hollow rod (820) extends; a first bolt hole (910) is provided on the side wall of the first hollow rod (820) extending into the clamping interval (1003), and a second bolt hole (1004) corresponding to the first bolt hole (910) is provided on the side wall of the two first clamping plates (1002); a plurality of third bolt holes (1005) are provided on the first plate (1001).

6. A synchronous jacking and dynamic leveling system for bridges according to claim 5, characterized in that: The limiting component includes a component body (3100), which includes a stabilizing seat (3120) for connecting to the bridge base. A diagonal bracing mechanism (3110) is provided above the stabilizing seat (3120). The diagonal bracing mechanism (3110) includes a first diagonal bracing plate (3220) for supporting the bridge and a second diagonal bracing plate (3210) for supporting the first diagonal bracing plate (3220). A plurality of limiting mechanisms are provided at the stabilizing seat (3120) at intervals along the length of the stabilizing seat (3120). The limiting mechanisms are used to fix the first diagonal bracing plate (3220) and the second diagonal bracing plate (3210). The temporary support assembly includes a support assembly body (3800) disposed between the beam and the pier. The support assembly body (3800) includes a plurality of support seats (3820) spaced apart along the height direction of the pier. The top of the support seat (3820) is provided with a rotating ball head (3810) for adjusting the support angle. The height of the plurality of connected support seats (3820) gradually decreases from bottom to top. Adjacent support seats (3820) are fixedly connected.

7. A synchronous jacking and dynamic leveling system for bridges according to claim 6, characterized in that: The first diagonal brace (3220) and the second diagonal brace (3210) have U-shaped cross sections. The second diagonal brace (3210) has a first through hole (3520) at both ends of its side wall. The first diagonal brace (3220) has a second through hole (3610) at its side wall corresponding to the first through hole (3520). The first diagonal brace (3220) has a first threaded rod (3420) that is set along the width direction of the first diagonal brace (3220) and passes through the first through hole (3520) and the second through hole (3610). The first threaded rod (3420) has a first nut (3410) at both ends of its first threaded rod (3420) that is threadedly engaged with the first threaded rod (3420).

8. A synchronous jacking and dynamic leveling system for bridges according to claim 7, characterized in that: The stabilizer (3120) includes a sliding plate (3230) with a U-shaped cross-section. The limiting mechanism includes a plurality of third through holes (3320) disposed on the side walls of both sides of the sliding plate (3230). The plurality of third through holes (3320) are spaced apart along the length of the sliding plate (3230). The first inclined plate (3220) has a fourth through hole (3620) disposed on the side wall near the sliding plate (3230) that corresponds to the third through hole (3320). The first inclined plate (3220) has a second threaded rod (3450) disposed along the width of the first inclined plate (3220) and passing through the fourth through hole (3620) and the third through hole (3320) at both ends. The second threaded rod (3450) has a second nut (3460) at both ends that is threadedly engaged with the second threaded rod (3450). The second inclined plate (3210) has a third threaded rod (3440) at one end near the sliding plate (3230) along the width direction of the second inclined plate (3210). Both ends of the third threaded rod (3440) pass through the first through hole (3520) and the third through hole (3320). Both ends of the third threaded rod (3440) are provided with a third nut (3430) that is threadedly engaged with the third threaded rod (3440).

9. A synchronous jacking and dynamic leveling system for bridges according to claim 8, characterized in that: Both sides of the sliding plate (3230) are provided with connecting plates (3250) arranged along the length direction of the sliding plate (3230). Both ends of the connecting plate (3250) are provided with connecting blocks (3240) for connecting the sliding plate (3230) and the connecting plate (3250). The connecting blocks (3240), the sliding plate (3230) and the connecting plate (3250) together constitute a storage area for the third nut (3430) and the second nut (3460) to extend into. The connecting plate (3250) is provided with a plurality of fifth through holes (3310) spaced apart along the length direction of the connecting plate (3250).

10. A method for synchronous jacking and dynamic leveling of bridges, implemented by a synchronous jacking and dynamic leveling system for bridges as described in any one of claims 2-9, comprising the following steps: S1. Construction Preparation and Site Layout Determine the jacking point and limiting point below the beam to be jacked. The jacking point is set directly below the original support of the beam or the web of the main beam and is used to install the jacking equipment. The limiting point is located at both ends of the bridge base and at the joint of the adjacent beam and is used to install the limiting component and the limiting component body (100). Multiple through holes are drilled at intervals along the length direction on the side walls at both ends of the bridge base. Scaffolding is erected at the pier and the treads are fully laid to form the construction interface. Anti-slip baffles are installed at the cap beam block. S2, Installation Limit and Restraint System Limiting components are installed at the limiting points of the bridge base. The stabilizing seat (3120) is fixedly connected to the through hole by bolts, and the inclined bracing mechanism (3110) on it is adjusted so that the first inclined bracing plate (3220) is in close contact with the bottom or side of the beam plate to form a spatial constraint. The main body (100) of the limiting component is installed at the expansion joint of the adjacent box girder. The fixing seat (120) is installed on the beam plate surface on both sides of the expansion joint, and the connecting rod (130) is passed through the vertical plate (240) of the fixing seat on both sides. The fixing mechanism is adjusted and locked to form a lateral constraint. S3. Construct a lifting execution and temporary support system. Install the main jack at the jacking point. Next to the jack, stack and fix multiple support seats (3820) from bottom to top between the bridge base and the beam to form a temporary support assembly. Adjust the rotating ball head (3810) on the top support seat to make it fully fit with the bottom surface of the beam. S4. Construct a multi-dimensional dynamic monitoring network Mark observation points at key sections of the bridge deck as benchmarks for macroscopic height and displacement and as manual verification points; install digital displacement sensors near the main jacks and connect them to the central PLC main control system; install observation components, fix the upper end of the telescopic rod (610) to the bottom of the beam, fix the guide seat (620) to the cap beam, and make the lower end of the telescopic rod extend into the guide groove (720) of the guide seat (620) to cover the scale of the first measuring ruler (710) and form a real-time vertical displacement monitoring point; S5, Coordinated Lifting and Dynamic Slope Adjustment Start all main jacks to synchronously lift the beam to a reference height, allowing the beam to smoothly detach from the original support and enter a controllable suspension state; then perform step-by-step differential lifting. The central PLC main control system, based on data feedback from the multi-dimensional monitoring network, instructs each main jack to lift at different strokes, with each lifting stroke not exceeding 2 cm. By controlling the differential lifting amount at each support point, the slope of the beam is dynamically adjusted synchronously during the lifting process; after each stage of lifting is completed, immediately check and adjust the inclined bracing mechanism (3110) of the limit component and the rotating ball head (3810) of the temporary support component to ensure that they maintain close contact with the beam and provide continuous constraint and auxiliary support; S6. Load Transfer and Cyclic Lifting When the beam is lifted to the height of a unit of support (3820), the new support (3820) is connected to the top of the established temporary support assembly and its rotating ball head (3810) is adjusted; the load of the main jack is completely transferred to the temporary support assembly of this layer, and then the jack is lowered to perform the next lifting cycle; repeat steps S5 and S6 until the beam reaches the predetermined elevation; S7, Leveling and Modification of Support System After the jacking and slope adjustment are in place, the support system is replaced and leveled. First, the slope adjustment component body (1600) is installed at intervals along the length of the beam slab below the bottom surface. The leveling steel plate is placed on the first lifting plate (1601). The leveling steel plate is lifted and fixed to the bottom surface of the beam slab by the lifting mechanism. Then, the auxiliary component body (1200) is used to support the new support (1201). The horizontal angle of the support (1201) is finely adjusted by the pushing mechanism at the bottom of its support leg (1302) so that it is completely in contact with the leveling steel plate on the bottom surface of the beam slab and then welded and fixed. Finally, the support pad stone is modified, including removing the old pad stone, extending the reinforcing bars, pre-embedding the anchor bolts and pouring high-performance grout. S8, System Fallback and Post-Work Recovery Following the reverse sequence of the jacking process, the beams were lowered slowly and in stages, allowing the load on the beams to be smoothly transferred to the new support system. After acceptance and confirmation, the main jacks, temporary support components, all limit components and other construction devices were removed in sequence to restore the bridge to its normal state.

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