Modular intelligent control high-speed rail cast-in-place box girder aerial overall displacement system and construction method thereof

Abstract

The invention relates to the technical field of bridge construction, and particularly discloses a modularized intelligent control high-speed rail cast-in-place box girder aerial integral displacement system and a construction method thereof. The modularized intelligent control high-speed rail cast-in-place box girder aerial integral displacement system comprises a transverse moving mechanism and an intelligent control system; a rear end pushing mechanism is arranged at the end, away from the front end traction mechanism, of the transverse moving mechanism, and the transverse moving mechanism is covered with a limiting mechanism. According to the scheme, the construction environment adaptability is high, the transverse moving mode and the connecting mode are flexibly combined, the system adapts to various complex construction conditions, the construction precision and safety are high, real-time monitoring, early warning and construction optimization are ensured through intelligent control and the digital twinning technology, construction deployment is rapid and convenient through modular design, the construction efficiency and economical efficiency are remarkably improved, and the construction cost is reduced. According to the modular structure of the system, the flexibility and adaptability of displacement of the cast-in-place box girder of the high-speed rail are remarkably improved, rapid assembly and disassembly are allowed through assemblies connected through bolts, and the layout can be flexibly adjusted according to the terrain of a construction site and the size of the box girder.

Description

Technical Field

[0001] This invention relates to the field of bridge construction technology, and specifically discloses a modular intelligent control system for the overall aerial relocation of cast-in-place box girders for high-speed railways and its construction method. Background Technology

[0002] As China's high-speed railway network gradually expands into complex terrain areas such as mountains and canyons, traditional cast-in-place bridge construction methods are increasingly unable to meet the actual needs of engineering construction. Traditional methods generally employ full-span scaffolding or hanging baskets, which not only have long construction cycles and high costs, but also pose extremely high risks for high-altitude construction due to the massive size and weight of the bridge beams.

[0003] In recent years, with the development of construction technology, some alternative box girder relocation techniques have emerged, such as using single sliding or single rolling lateral displacement methods, which have achieved certain results. However, these techniques still have many limitations, such as the limited availability of construction equipment, inability to adapt to varying terrain and spatial environments, and the lack of systematic intelligent control schemes, making it difficult to ensure high precision, safety, and construction efficiency. Furthermore, these methods typically require customized equipment, lacking applicability and flexibility, and unable to quickly respond to engineering needs.

[0004] Currently, traditional box girder displacement technology has limitations, such as: 1. The single sliding mode cannot handle both flat ground and slopes; 2. Customized equipment cannot quickly adapt to different terrains and box girder sizes; 3. Lack of real-time monitoring leads to high construction safety risks.

[0005] Therefore, there is an urgent need to develop a new technology for the overall displacement construction of box girders that can effectively adapt to complex construction environments, has a flexible modular structure, and possesses intelligent control and real-time monitoring functions, so as to improve construction safety, efficiency, and economy. Summary of the Invention

[0006] In view of this, the purpose of this invention is to provide a modular intelligent control system for the overall aerial relocation of cast-in-place box girders for high-speed railways and its construction method. Specifically, it relates to a system and construction method for the overall aerial relocation of cast-in-place box girders for high-speed railways suitable for complex environments such as mountainous areas and canyons, and in particular, a box girder relocation construction technology that combines modular design and intelligent control.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a modular intelligent control system for the overall aerial displacement of cast-in-place box girders for high-speed railways, comprising a lateral movement mechanism and an intelligent control system, wherein a front-end traction mechanism is provided on one side of the lateral movement mechanism, a rear-end pushing mechanism is provided at the end of the lateral movement mechanism away from the front-end traction mechanism, and a limiting mechanism is covered above the lateral movement mechanism. The traverse mechanism includes removable pads; The front-end traction mechanism includes a support strut for support; The limiting mechanism includes side posts for erection; The backend push mechanism includes a base station for location services; The intelligent control system includes a PLC controller and a digital twin model.

[0008] Furthermore, the lower end of the pad is provided with several support legs, and three groups of support legs are equidistantly distributed along the lower end of the pad. The pad is provided with several groups, and a base platform is provided between any two adjacent pads. A lifting assembly is provided above the base platform. The lifting assembly includes a hydraulic cylinder and a lifting plate. The lower end of the hydraulic cylinder is fixedly installed to the surface of the base platform by screws. The hydraulic cylinder is provided with a piston rod for extension and retraction. The upper end of the piston rod is fixed to the lower end surface of the lifting plate. The upper ends of the several lifting plates support the box girder body. Connecting beams are provided on the several support legs distributed along the same transverse direction.

[0009] Furthermore, several mounting plates are provided below the box girder body, and a sliding plate is provided at the lower end of the mounting plate. The sliding plates are symmetrically distributed along the middle position of the mounting plate. The sliding plates are made of PTFE. Several wheel frames are also distributed and fixed at the lower end of the mounting plate. Rollers are rotatably mounted on the surface of the wheel frames. The rollers are staggered with the sliding plates.

[0010] Furthermore, a traction seat is provided at one end of the box girder body, and a traction ring is provided at the end of the traction seat away from the box girder body. Several stress sensors are distributed at the upper end of the box girder body, and a motion detection component is also fixedly installed at the upper end of the box girder body. The motion detection component includes a speed sensor, a displacement sensor, a processor, and a wireless signal transmitter. The stress sensor, speed sensor, and displacement sensor are respectively connected to the processor via data cables, and the processor is also connected to the wireless signal transmitter via data cables.

[0011] Furthermore, there are several pillars distributed longitudinally, and several groups of pillars distributed transversely. Above the several pillars distributed longitudinally, there is a common crossbeam. Several crossbeams are distributed transversely at equal intervals. A base plate is provided above the transverse direction. Reinforcing beams are provided on the side walls of the several pillars distributed transversely. Reinforcing rods are provided between two symmetrically distributed reinforcing beams. The substrate is provided with slide rail one and slide rail two above it. The number and position of slide rail one match the number and position of the slide plate, and the number and position of slide rail two match the number and position of the rollers.

[0012] Furthermore, a side frame is provided on one side of the substrate, a side platform is provided above the side frame, and a bearing is provided above the side platform. The bearings are symmetrically distributed along both ends of the side platform. The outer ring wall of the bearing is fixedly installed to the surface of the side platform through a bracket. The bearings distributed on both sides are internally connected to the same shaft. The surface of the shaft is interference-fitted with the inner ring wall of the corresponding bearing. A motor is provided at the outer end of the shaft. The motor has a drive shaft inside. The end of the shaft is fixedly installed to the end face of the shaft through a coupling.

[0013] Furthermore, the surface of the shaft is covered with a winding roller, which is wide at both ends and narrow in the middle. A steel wire rope is wound around the surface of the winding roller. One end of the steel wire rope is fixed to the surface of the winding roller, and a pull head is welded and fixed to the end of the steel wire rope away from the winding roller. The pull head is embedded in the surface of the traction ring.

[0014] Furthermore, the side columns are symmetrically distributed along both sides of the pad block, and a common top beam is provided above the side columns distributed along both sides. Several top beams are distributed longitudinally and are located above the box girder body. Several longitudinal beams are distributed at the upper end of the top beams. Side plates are provided on the inner side of several side columns distributed along one side. Several hydraulic cylinders are fixed on the inward side of the side plates. Piston rods for extension and retraction are provided inside the hydraulic cylinders. Limiting plates are provided at the ends of several piston rods away from the side plates. The limiting plates are fitted to the side wall of the box girder body.

[0015] Furthermore, a hydraulic cylinder three is distributed above the base. The surface of the hydraulic cylinder three is fixed to the upper surface of the base by bolts. The inside of the hydraulic cylinder three is provided with a piston rod three for telescopic movement. A push plate is provided at the end of the piston rod three. A push block is provided on the other side of the push plate. A partition is installed on the back of the box girder body.

[0016] Furthermore, the construction method of the modular intelligent control high-speed railway cast-in-place box girder aerial integral displacement system is as follows: S1. Install the pads, legs and base of the transverse mechanism and fix them with bolts to ensure that the legs and connecting beams form a stable support structure. Position the support column, crossbeam and base plate of the front traction mechanism and install reinforcing beams and reinforcing rods to enhance overall stability. S2. Install hydraulic cylinder one and lifting plate on the base platform, evenly distributed at multiple points to ensure balanced force when the box girder body is lifted. Lift the box girder body to the predetermined height through hydraulic cylinder one, leaving space for lateral movement operation. S3. Select and install a sliding plate or roller on the mounting plate under the box girder body according to the terrain, match it with sliding track one or sliding track two, fix the traction seat and traction ring at the front end of the box girder body, and install the partition plate at the rear end. S4. Install the side columns, top beams and longitudinal beams with the limit mechanism, and adjust the limit plate by hydraulic cylinder two to fit the two sides of the box girder body to correct the position. S5. Fix the wire rope of the front traction mechanism to the traction ring through the pull head, pre-tighten the wire rope of the winding roller, start the motor to test the forward and reverse functions, and ensure that the winding roller can smoothly take in and release the wire. S6. Fix the base and hydraulic cylinder three, install the push plate and push block, and adjust the contact position between the piston rod three and the partition plate. S7. Activate the stress sensors and motion detection components on the box girder body, connect the processor to monitor the data in real time, introduce building information model and digital twin technology to realize the digitalization, intelligence and visualization of the construction process, start the PLC control system and digital twin monitoring system, monitor the status of each module in real time, ensure that the system is ready, and coordinate the front-end traction and rear-end jacking systems according to the PLC system settings to implement the overall precise lateral movement of the box girder. S8. Front-end traction: The motor drives the winding roller to take in the wire, pulling the box girder body forward along slide one or slide two. Rear-end push: The hydraulic cylinder three pushes the push block to hold the partition plate. The push block is gradually increased to achieve continuous push. The position of the box girder is adjusted in real time through the limit plate to prevent deviation. S9. After the box girder body arrives at the predetermined position, the corresponding hydraulic cylinder is controlled by the PLC system to accurately position the girder body and install permanent supports to complete the placement of the girder body. S10. Dismantle the modular connection structure and lateral movement module to facilitate rapid deployment and reuse of the next section of construction.

[0017] The innovations of this invention are: for the first time, it systematically integrates and innovates various lateral movement methods, connection methods, traction and jacking technologies, as well as intelligent control and digital technologies. The modular design has flexible system scalability and efficient deployment, making it particularly suitable for construction in complex terrain, forming a unique technical advantage. The integrated application of BIM and digital twin technologies significantly improves the management level and intelligence of engineering construction.

[0018] The working principle and beneficial effects of this solution are as follows: 1. This solution has strong adaptability to the construction environment, and the lateral movement and connection methods can be flexibly combined to adapt to various complex construction conditions. It has high construction accuracy and safety. Intelligent control and digital twin technology ensure real-time monitoring, early warning and optimized construction. The modular design makes construction deployment fast and convenient, and significantly improves construction efficiency and economy. 2. As described in 1, the modular structure of the system (such as detachable pads, legs, base platforms, etc.) significantly improves the flexibility and adaptability of the relocation of cast-in-place box girders for high-speed railways. The bolted components (such as legs and pads, base platforms and legs) allow for rapid assembly and disassembly, facilitating flexible layout adjustments based on the construction site terrain and box girder dimensions. 3. As described in section 2, the system significantly reduces the frictional resistance during box girder displacement through a combination design of PTFE sliding plate, rollers, and slide rails. The ultra-low coefficient of friction of the PTFE sliding plate makes the box girder slide more smoothly on flat ground, while the combination of rollers and slide rail two is suitable for ramp scenarios. The two can be flexibly switched to adapt to different working conditions. The front-end traction mechanism provides stable traction force by using a motor to drive the winding roller to wind and unwind the wire rope. The rear-end pushing mechanism adopts a progressive pushing mode with hydraulic cylinder three and multiple pushing blocks, avoiding the limitation of insufficient hydraulic cylinder stroke and ensuring the continuity of long-distance displacement. 4. As described in point 3, the modular pads, outriggers, and traction mechanism use standardized bolt connections, reducing on-site assembly time by 50% compared to traditional welded support systems. This allows for the completion of the transverse platform setup within 24 hours. The interchangeable design of the sliding plate (PTFE plate and rollers) and the PLC system automatically recommend the optimal solution based on terrain data, such as using the sliding plate on flat ground and the rollers on slopes. This reduces switching time by 80% and friction resistance by 70%. The PTFE plate has a friction coefficient of only 0.04. Front-end traction and rear-end jacking are synchronized in real time via PLC, and speed sensor data is fed back to the digital twin model, automatically adjusting the motor speed and hydraulic cylinder thrust to control the box girder movement speed deviation within ±2mm / s, improving accuracy by 90% compared to traditional manual operation. 5. As described in section 4, BIM and digital twin technologies simulate the construction process, optimize the layout of jacking points, improve the load balance of hydraulic cylinders by 60%, and avoid local stress exceeding limits. In real-time monitoring, the system automatically alarms for offsets >5mm or stress exceeding limits by 10%, with a deviation correction response time of <3 seconds, reducing construction deviations by 90%. The stress sensor density is ≥4 units / ㎡, and the motion detection components, including displacement and velocity sensors, form a wireless network. Data is synchronized to the cloud processor every second to generate a three-dimensional mechanical model. If a torsional trend of the box girder is detected, the hydraulic cylinder of the limiting mechanism automatically starts to correct the deviation, suppressing the lateral offset within 3mm, which is 85% more accurate than traditional limiting devices.

[0019] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0020] Figure 1 This is a schematic diagram showing the distribution of the various mechanisms in the embodiment; Figure 2 This is a schematic diagram of the overall front structure of the embodiment; Figure 3 This is a bottom view of the support leg portion in an embodiment. Figure 4This is an enlarged schematic diagram of point A in the embodiment; Figure 5 This is a schematic diagram showing the distribution of the stress sensor and motion detection component in an embodiment. Figure 6 This is a schematic diagram of the bottom distribution of the support pillars in an embodiment; Figure 7 This is a front view of the embodiment. Figure 8 This is an enlarged schematic diagram of point B in the embodiment; Figure 9 This is an enlarged schematic diagram of point C in the embodiment; Figure 10 This is a bottom view of the limiting mechanism in the embodiment. Figure 11 This is a schematic diagram of the side distribution of the limiting mechanism in an embodiment.

[0021] The following labels are used in the attached diagram: 1. Transverse movement mechanism; 10. Pad block; 11. Outrigger; 12. Base platform; 14. Hydraulic cylinder one; 15. Lifting plate; 16. Box girder body; 17. Mounting plate; 18. Slide plate; 19. Wheel frame; 110. Roller; 111. Connecting beam; 1001. Traction seat; 1002. Traction ring; 1003. Movement detection assembly; 1004. Stress sensor; 2. Front-end traction mechanism; 20. Support column; 21. Crossbeam; 22. Base plate; 23. Reinforcing beam; 24. Reinforcing rod; 25. Slide rail one; 26. Slide rail two; 2001. Side frame; 2002. Side platform; 2003. Bearing; 2004. Shaft; 2005. Winding roller; 2006. Motor; 2007. Wire rope; 2008. Pull head; 3. Limiting mechanism; 30. Side column; 31. Top beam; 32. Longitudinal beam; 33. Side plate; 34. Hydraulic cylinder two; 35. Limiting plate; 4. Backend push mechanism; 40. Base; 41. Hydraulic cylinder three; 42. Push plate; 43. Pushing block; 44. Partition. Detailed Implementation

[0022] The following detailed description illustrates the specific implementation method: Example 1 like Figures 1 to 11 As shown, a modular intelligent control system for the overall aerial displacement of cast-in-place box girder for high-speed railway is disclosed, comprising a transverse movement mechanism 1 and an intelligent control system. A front-end traction mechanism 2 is provided on one side of the transverse movement mechanism 1, and a rear-end pushing mechanism 4 is provided at the end of the transverse movement mechanism 1 away from the front-end traction mechanism 2. A limiting mechanism 3 covers the top of the transverse movement mechanism 1.

[0023] The lateral movement mechanism 1 includes a removable pad 10; The front-end traction mechanism 2 includes a support strut 20 for support; The limiting mechanism 3 includes a side post 30 for erection; The backend push mechanism 4 includes a base station 40 for positioning; The intelligent control system includes a PLC controller and a digital twin model, which receives sensor data in real time and optimizes construction parameters.

[0024] The mechanism for linking digital twin models with sensors is as follows: A1. Real-time data mapping The stress sensor 1004, displacement / velocity sensor, i.e., motion detection component 1003, etc. transmit data to the PLC controller in real time via wireless network. The PLC synchronously updates the physical state of the digital twin model, such as the stress distribution, displacement deviation, velocity curve, etc. of the box girder. Digital twin models use algorithms, such as finite element analysis, to simulate the stress and deformation trends of box girders, compare actual data with theoretical values, and dynamically correct model parameters. A2. Closed-loop feedback control When the sensor detects that the box girder stress exceeds the limit or the displacement is off, the digital twin model triggers an early warning and automatically adjusts the speed of the front traction motor 2006 or the thrust of the rear hydraulic cylinder 3 41 through the PLC to ensure synchronous movement. For example: if the displacement sensor shows that the box girder has shifted to the left beyond the tolerance, the model will instruct the right hydraulic cylinder 34 to pressurize and finely adjust the box girder's posture through the limit plate 35. A3. Virtual Debugging and Optimization Before construction, digital twins simulate the behavior of box girders under different traction / pushing parameters, such as the effect of different motor speeds on wire rope tension, to optimize PLC control logic in advance and reduce on-site trial and error.

[0025] BIM model simulation of construction path and slide optimization, specifically: B1. Path Prediction and Conflict Detection 3D environment modeling: BIM integrates terrain, existing structures and temporary facilities, such as slide 1 25 and slide 2 26, to simulate the movement trajectory of the box girder from the starting point to the end point and check the risk of collision with surrounding obstacles. Multiple options comparison: Compare the frictional resistance of skateboard 18 and roller 110 under different slopes, and select the optimal mode of movement, such as using skateboard on flat ground and switching to roller on slopes; B2. Slide Layout Optimization Stress analysis: BIM combined with finite element analysis is used to calculate the load distribution of slide rail 25 and slide rail 26, and the spacing between base plate 22 and lower crossbeam 21 or the number of reinforcing beams 23 are adjusted to avoid local overload. Dynamic adaptability: simulate the relative position changes of the support leg 11 and the slide rail when the box girder moves, optimize the modular arrangement of the pad block 10, and ensure that the jacking point is always within the effective support range; B3. Visualization of construction parameters The BIM simulation generates dynamic heat maps of key parameters such as traction force and jacking speed to guide the installation accuracy of the slide rail on site. For example, the horizontal error of slide rail 25 needs to be controlled within ±2mm.

[0026] The lower end of the pad 10 is provided with several support legs 11. The support legs 11 are fixed to the pad 10 by bolts. Three sets of support legs 11 are evenly distributed along the lower end of the pad 10. The pad 10 is an I-shaped steel structure, and the support legs 11 are channel steel structures. Several sets of pad 10 are provided, and a base platform 12 is provided between any two adjacent pads 10. The two sides of the base platform 12 are fixed to the corresponding support legs 11 by bolts. The base platform 12 is a rectangular structure and can be used for the installation of the lifting assembly. The lifting assembly is provided above the base platform 12. The lifting assembly includes hydraulic cylinder 14 and lifting plate 15. The lower end of hydraulic cylinder 14 is fixed to the surface of the base platform 12 by screws. Several hydraulic cylinders 14 are evenly distributed along the upper end of the base platform 12. The hydraulic cylinders 14 are connected at multiple points. The 14 setting ensures that when the box girder body 16 is lifted, multiple points can be pushed upwards, ensuring the stability of the box girder body 16 during lifting. It also avoids the situation where some hydraulic cylinders 14 are damaged due to the heavy weight of the box girder body 16 if the number of hydraulic cylinders 14 is too small. The hydraulic cylinder 14 is equipped with a piston rod for extension and retraction. The upper end of the piston rod is fixed to the lower end face of the lifting plate 15. The upper ends of several lifting plates 15 support the box girder body 16. Connecting beams 111 are set on several outriggers 11 distributed along the same transverse direction. The connecting beams 111 are fixed to any outrigger 11 by bolts. The setting of connecting beams 111 can further improve the support stability of the pad block 10 during the load-bearing process of the box girder body 16. Several mounting plates 17 are provided below the box girder body 16. The mounting plates 17 are staggered with the pads 10, with the mounting plates 17 positioned between two pads 10. The mounting plates 17 are fixedly installed to the surface of the box girder body 16 by bolts. A sliding plate 18 is provided at the lower end of the mounting plate 17. The sliding plates 18 are symmetrically distributed along the middle of the mounting plate 17 and are fixedly assembled to the surface of the mounting plate 17 by bolts. The sliding plates 18 are made of PTFE (polytetrafluoroethylene), which has a very low coefficient of friction. This greatly reduces friction when the sliding plate 18 moves within the concrete structure. The movement of the concrete structure is smoother. Several wheel frames 19 are also fixedly distributed at the lower end of the mounting plate 17. The upper end of the wheel frame 19 is fixedly assembled to the surface of the mounting plate 17 by screws. Rollers 110 are rotatably mounted on the surface of the wheel frame 19. The rollers 110 and the sliding plate 18 are staggered and can be selectively installed and used. When moving on flat ground, the sliding plate 18 can be installed to allow the box girder body 16 to move laterally. The rollers 110 can be installed and used when the ground is sloping, which can further reduce the damping of sliding friction and improve the smoothness of the sliding process. A traction seat 1001 is provided at one end of the box girder body 16. The traction seat 1001 has a U-shaped structure and is inserted into one end of the box girder body 16. Both the upper and lower ends of the traction seat 1001 are installed to the box girder body 16 by bolts. A traction ring 1002 is provided at the end of the traction seat 1001 away from the box girder body 16. One end of the traction ring 1002 is welded to the surface of the traction seat 1001. Several stress sensors 1004 are distributed at multiple points on the upper end of the box girder body 16 to monitor the stress changes of the box girder body 16 during jacking and lateral movement. A mobile detection group is also fixedly installed on the upper end of the box girder body 16. Component 1003, the motion detection component 1003 includes a speed sensor, a displacement sensor, a processor, and a wireless signal transmitter. The stress sensor 1004, speed sensor, and displacement sensor are connected to the processor via data cables. The processor is also connected to the wireless signal transmitter via a data cable. The speed sensor can monitor the speed of the box girder body 16 as it moves. The displacement sensor can monitor the displacement deviation when the box girder body 16 moves. The processor can analyze and process the data of each component and transmit it remotely via the wireless signal transmitter to achieve remote monitoring. A PLC synchronous operating system is introduced to realize real-time data acquisition and control of multiple work points. The PLC control module can automatically coordinate the operation of the front-end traction and rear-end jacking systems to ensure the synchronous and smooth movement of the box girder. It introduces a wireless sensor network to monitor parameters such as the box girder's position, speed, stress, and deformation in real time, and interacts with the PLC system to provide precise real-time control. It also introduces Building Information Modeling (BIM) and digital twin technology to realize the digitalization, intelligence, and visualization of the construction process. BIM technology is used for the visual management of the construction process, pre-simulating the construction process and optimizing the construction plan. Digital twin technology establishes a real-time virtual model, and through the sensor network, it provides real-time feedback of construction process data, real-time early warnings, and optimization suggestions to ensure construction safety and efficiency. Several support columns 20 are distributed longitudinally, and several groups of support columns 20 are distributed transversely. A common crossbeam 21 is installed above several support columns 20 distributed along the same longitudinal direction. The crossbeam 21 is fixed to the support column 20 by bolts. The crossbeam 21 has an I-beam structure, and the support column 20 has a channel steel structure. Several crossbeams 21 are distributed equidistantly along the transverse direction. A base plate 22 is installed above the crossbeam 21. The lower end of the base plate 22 is fixed to the upper end of any crossbeam 21 by bolts. The base plate 22 can be used as a sliding track to support the movement of the box girder body 16. The structure includes several support columns 20 distributed along the same transverse direction, with reinforcing beams 23 installed on their side walls. The connection between the reinforcing beams 23 and the support columns 20 is fixed by bolts. The reinforcing beams 23 are also channel steel structures. Reinforcing rods 24 are installed between two symmetrically distributed reinforcing beams 23. The ends of the reinforcing rods 24 are installed with the corresponding reinforcing beams 23 by bolts. Through the support columns 20, crossbeams 21, reinforcing beams 23 and reinforcing rods 24, the box girder body 16 can be crossbeamed, and the slide section can be stably supported. It can also serve as the foundation for the front-end traction mechanism 2. Slide rail 1 25 and slide rail 26 are respectively provided on the upper part of the base plate 22. Slide rail 1 25 and slide rail 26 are fixedly installed to the surface of the base plate 22 by bolts. The number and position of slide rail 1 25 match the number and position of slide plate 18, and the number and position of slide rail 26 match the number and position of roller 110. When the box girder body 16 needs to move laterally after the slide plate 18 and roller 110 are installed, the slide plate 18 slides on the inside of slide rail 1 25 and the roller 110 slides on the inside of slide rail 2 26, so that the box girder body 16 can be stably displaced during lateral movement. Slide rail 1 25 and slide rail 26 can be selected for installation and use according to the actual situation. A side frame 2001 is provided on one side of the substrate 22. One end of the side frame 2001 is welded and fixed to the end face of the substrate 22. The side frame 2001 is a right-angle structure, and its horizontal position is embedded in the ground by extended bolts, thereby ensuring the stable positioning of the side frame 2001. A side platform 2002 is provided above the side frame 2001. The side platform 2002 is a rectangular structure, and its lower end is fixed to the surface of the side frame 2001 by bolts. A bearing 2003 is provided above the side platform 2002. The bearings 2003 are symmetrically distributed along both ends of the side platform 2002. The outer ring wall of the bearing 2003 is fixed to the surface of the side platform 2002 by a bracket. The bearings 2003 distributed on both sides are connected by a single shaft 2004. The surface of the shaft 2004 is interference-fitted with the inner ring wall of the corresponding bearing 2003. A motor 2006 is installed at the outer end of the shaft 2004. The outer wall of the motor 2006 is fixedly installed to the side wall of the side platform 2002 by a bracket. The motor 2006 has a drive shaft inside. The end of the shaft is fixedly installed to the end face of the shaft 2004 by a coupling. The motor 2006 is a large three-phase asynchronous motor. When it is powered on, the shaft is driven, which drives the shaft 2004 to rotate, thereby driving the winding roller 2005. The surface of the shaft 2004 is covered with a winding roller 2005. The connection between the winding roller 2005 and the shaft 2004 is fixed with screws. The winding roller 2005 is wider at both ends and narrower in the middle to ensure that it will not separate from the sides of the winding roller 2005 when the wire rope 2007 is wound or released. The surface of the winding roller 2005 is wound with the wire rope 2007. One end of the wire rope 2007 is fixed to the surface of the winding roller 2005. The end of the wire rope 2007 away from the winding roller 2005 is welded and fixed with a pull head 2008. Embedded on the surface of the traction ring 1002, the connection between the pull head 2008 and the traction ring 1002 is fixed by welding. The motor 2006 is externally connected to a forward and reverse switch through a wire. Under forward and reverse operation, the motor 2006 can make the shaft rotate in both directions and make the shaft 2004 rotate synchronously, which can realize the winding and unwinding operation of the winding roller 2005. When performing front-end traction, the winding roller 2005 winds up the wire rope 2007, and through the pull head 2008 and the traction ring 1002, it can pull the box girder body 16 to move laterally forward. The lower ends of the side columns 30 are installed by positioning them to the ground. The side columns 30 are symmetrically distributed on both sides of the pad block 10. A top beam 31 is provided above the side columns 30 distributed on both sides. The connection between the top beam 31 and the side column 30 is fixed with bolts. Several top beams 31 are distributed longitudinally and are set above the box girder body 16. Several longitudinal beams 32 are distributed longitudinally at the upper end of the top beams 31. The connection between the longitudinal beams 32 and the top beams 31 is fixed with bolts. The longitudinal beams 32 can ensure the stability of the connection between the several top beams 31. Side plates 33 are provided on the inner side of the several side columns 30 distributed on one side. The side plates 33 are fixed to the surface of any side column 30 with bolts. The side plate 33 is fixedly installed with several hydraulic cylinders 34 distributed on the inward side. The hydraulic cylinders 34 are equipped with piston rods for extension and retraction. The connection between the hydraulic cylinders 34 and the side plate 33 is fixed with screws. The end of each piston rod away from the side plate 33 is provided with a limiting plate 35. The limiting plate 35 is fitted against the side wall of the box girder body 16. The limiting plate 35 can be extended and retracted by the piston rods of the hydraulic cylinders 34 to achieve a close contact with the surface of the box girder body 16. The limiting plates 35 distributed along both sides can adjust the position of the two sides of the box girder body 16 before it moves laterally, so as to avoid it from tilting and affecting the subsequent lateral movement process. The lower end of the base 40 is fixed to the ground with bolts. One side of the base 40 is bolted to the support leg 11 and the pad block 10 to ensure the stability of the base 40. Hydraulic cylinders 41 are distributed on the upper part of the base 40. The surface of the hydraulic cylinders 41 is fixed to the upper surface of the base 40 with bolts. The inside of the hydraulic cylinders 41 is equipped with a piston rod 3 for extension and retraction. The end of the piston rod 3 is equipped with a push plate 42. The other side of the push plate 42 is equipped with a push block 43. The push block 43 is a single structure that can be used when the box girder body 16 is in front. When the box girder body 16 is pushed laterally, it is used in an interleaved manner. Without changing the position of the hydraulic cylinder 41, by continuously adding push blocks 43, the push blocks 43 can carry a transitional push effect, so as to achieve stable pushing of the box girder body 16. A partition plate 44 is installed on the back of the box girder body 16. The partition plate 44 is fixed to the end of the box girder body 16 away from the traction seat 1001 by bolts. This can increase the contact area during the pushing process, thereby ensuring the stability of the pushing process. The partition plate 44 is set to fit snugly with the push blocks 43.

[0027] The construction method of the modular intelligent control system for the aerial integral displacement of cast-in-place box girders for high-speed railway is as follows: S1. Install the pad 10, support leg 11 and base platform 12 of the transverse mechanism 1 and fix them with bolts to ensure that the support leg 11 and the connecting beam 111 form a stable support structure. Position the column 20, crossbeam 21 and base plate 22 of the front traction mechanism 2, and install the reinforcing beam 23 and reinforcing rod 24 to enhance the overall stability. S2. Install hydraulic cylinder 14 and lifting plate 15 on the base platform 12, with multiple points evenly distributed to ensure that the box girder body 16 is subjected to balanced force when it is lifted. Lift the box girder body 16 to the predetermined height through hydraulic cylinder 14, leaving space for lateral movement operation. S3. Select and install the sliding plate 18 or roller 110 on the mounting plate 17 below the box girder body 16 according to the terrain, and match it with the sliding track 25 or the sliding track 26. Fix the traction seat 1001 and traction ring 1002 at the front end of the box girder body 16, and install the partition plate 44 at the rear end. S4. Install the side column 30, top beam 31 and longitudinal beam 32 of the limiting mechanism 3, and adjust the limiting plate 35 by hydraulic cylinder 2 34 to fit the two sides of the box girder body 16 to correct the position. S5. Fix the wire rope 2007 of the front traction mechanism 2 to the traction ring 1002 through the pull head 2008, pre-tighten the wire rope 2007 by the winding roller 2005, start the motor 2006 to test the forward and reverse function, and ensure that the winding roller 2005 can smoothly wind and unwind the wire. S6, fix the base 40 and hydraulic cylinder 3 41, install push plate 42 and push block 43, and adjust the contact position of piston rod 3 and partition 44; S7. Activate the stress sensor 1004 and the motion detection component 1003 on the box girder body 16, connect the processor to monitor the data in real time, introduce building information model and digital twin technology to realize the digitalization, intelligence and visualization of the construction process, start the PLC control system and digital twin monitoring system, monitor the status of each module in real time, ensure that the system is ready, and according to the PLC system settings, the front-end traction and the rear-end jacking system work in coordination to implement the overall precise lateral movement of the box girder; S8. Front-end traction: Motor 2006 drives winding roller 2005 to take in the wire, pulling the box girder body 16 forward along slide 1 25 or slide 2 26. Rear-end push: Hydraulic cylinder 3 41 pushes push block 43 to hold the partition 44. The number of blocks is gradually increased to achieve continuous push. The position of the box girder is adjusted in real time through the limit plate 35 to prevent deviation. S9. After the box girder body 16 arrives at the predetermined position, the corresponding hydraulic cylinder is controlled by the PLC system to accurately position the girder and install permanent supports to complete the girder placement. S10. Dismantle the modular connection structure and lateral movement module to facilitate rapid deployment and reuse of the next section of construction.

[0028] Example 2 According to the construction of high-speed railway bridges in mountainous areas Scene characteristics: The terrain is highly undulating, the lateral movement path has a slope, and the influence of gravity needs to be overcome; System Adaptability Improvement: Roller 110 and slide 26 are used in combination: switch to the roller system on slopes to reduce frictional resistance; use skateboard 18 and slide 25 on flat ground to ensure stability. Digital twin dynamic parameter adjustment: By pre-simulating the slope section displacement through the BIM model, the ratio of the traction force of the motor 2006 and the thrust of the hydraulic cylinder 3 41 is adjusted to prevent the box girder from slipping. Reinforced limiting mechanism 3: Increased density of side column 30 and increased pressure of hydraulic cylinder 2 34 by 20% to ensure that the box girder does not shift under lateral slope; Test results: Displacement accuracy: ±4.3mm throughout (meets ±5mm requirement); The lifting synchronization error is 1.5% (<2%), which is achieved by adjusting the flow rate of hydraulic cylinder 14 in real time via PLC.

[0029] Example 3 According to the construction of the canyon overpass Scenario characteristics: Crossing deep valleys, with a large lateral span (>200m), requiring solutions to wind load and long-distance synchronous control issues; System Adaptability Improvement: Segmented traction-pushing coordination: Every 50m, an auxiliary base 40 and hydraulic cylinder 3 41 are added to form a multi-segment pushing relay to avoid stress concentration at a single point; Wireless sensor network upgrade: Add wind speed sensor to dynamically adjust displacement speed (e.g., reduce speed by 50% when wind speed > 10m / s); Digital twin early warning: The model compares stress sensor 1004 data in real time, and if an anomaly is detected (e.g., stress exceeds limit on valley side outrigger 11), it immediately pauses and adjusts the lifting force distribution. Test results: Long-distance synchronization error: cumulative displacement deviation ±3.8mm / 100m; Wind load adaptability: At a wind speed of 8 m / s, the lateral sway of the box girder is less than 2 mm.

[0030] In practice This scheme uses the pad 10 and support leg 11 in the transverse mechanism 1 to form a modular support frame. The lifting component hydraulic cylinder 14 and lifting plate 15 are distributed on the base platform 12 to form a multi-point synchronous lifting mechanism. The piston rod of hydraulic cylinder 14 drives the lifting plate 15 to rise and fall vertically, evenly distributing the weight of the box girder body 16 and avoiding local stress concentration. The stress sensor 1004 monitors the stress state of each point of the box girder in real time, and adjusts the lifting speed and force of hydraulic cylinder 1 through the processor feedback to ensure that the box girder remains horizontal and stable during the lifting process. In addition, the connecting beam 111 connects the support leg 11 to enhance the overall rigidity and prevent the pad 10 from tilting due to uneven load. The core of this principle is the combination of modular hydraulic lifting and sensor closed-loop control to achieve dynamic balance when the box girder is moved at high altitude. The lateral movement of the box girder body 16 is accomplished by the cooperation of the sliding plate 18 or roller 110 with the sliding track 25 or sliding track 26. The sliding plate 18 is made of PTFE plate material, which reduces sliding resistance by utilizing its extremely low coefficient of friction. The roller 110 is suitable for sloping terrain, and the friction is further reduced by the rotation of the wheel frame 19. The motor 2006 of the front traction mechanism 2 drives the winding roller 2005 to wind and unwind the steel wire rope 2007, and pulls the traction ring 1002 to move the box girder along the sliding track. The speed sensor and displacement sensor in the movement detection component 1003 monitor the displacement deviation in real time. The processor adjusts the motor speed or the hydraulic cylinder 34 of the limit mechanism 3 pushes the limit plate 35 to correct the deviation. The hydraulic cylinder 41 of the rear pushing mechanism 4 works in conjunction with the pushing block 43 to form a two-way drive mode of "pulling in front and pushing in back" to ensure the continuity and accuracy of long-distance lateral movement. The system integrates stress, velocity, and displacement sensors and wireless communication modules to build an intelligent monitoring network. The mobile detection component 1003 transmits stress changes, displacement offsets, and velocity data during the box girder relocation process to a remote terminal in real time. Operators can dynamically adjust the jacking or traction parameters. The limiting mechanism 3 uses hydraulic cylinder 2 34 to push the limiting plate 35 to clamp the side wall of the box girder. With the help of sensor data, it automatically corrects the lateral offset. The modular design of the push block 43 of the rear pushing mechanism 4 allows for segmented incremental thrust, avoiding thrust interruption caused by insufficient stroke of hydraulic cylinder 3 41. This principle relies on multi-sensor fusion and wireless transmission technology to achieve intelligent control of the entire box girder relocation process, ensuring the safety and efficiency of high-altitude operations.

[0031] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific structures and characteristics in the solutions is not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or its practicality.

Claims

1. A modular intelligent control system for the overall aerial relocation of cast-in-place box girders for high-speed railways, characterized in that: It includes a lateral movement mechanism and an intelligent control system. A front-end traction mechanism is provided on one side of the lateral movement mechanism, and a rear-end pushing mechanism is provided at the end of the lateral movement mechanism away from the front-end traction mechanism. A limiting mechanism covers the top of the lateral movement mechanism. The traverse mechanism includes removable pads; The front-end traction mechanism includes a support strut for support; The limiting mechanism includes side posts for erection; The backend push mechanism includes a base station for location services; The intelligent control system includes a PLC controller and a digital twin model.

2. The modular intelligent control system for the overall aerial relocation of cast-in-place box girders for high-speed railways according to claim 1, characterized in that: The lower end of the pad is provided with several support legs, and three groups of support legs are evenly distributed along the lower end of the pad. The pad is provided with several groups, and a base platform is provided between any two adjacent pads. A lifting assembly is provided above the base platform. The lifting assembly includes a hydraulic cylinder and a lifting plate. The lower end of the hydraulic cylinder is fixed to the surface of the base platform by screws. The hydraulic cylinder is provided with a piston rod for extension and retraction. The upper end of the piston rod is fixed to the lower end surface of the lifting plate. The upper ends of the several lifting plates support the box girder body. Connecting beams are provided on the several support legs distributed along the same transverse direction.

3. The modular intelligent control system for the overall aerial relocation of cast-in-place box girders for high-speed railways according to claim 2, characterized in that: Several mounting plates are provided below the box girder body. Slide plates are provided at the lower end of the mounting plates. The slide plates are symmetrically distributed along the middle of the mounting plates. The slide plates are made of PTFE. Several wheel frames are also fixed at the lower end of the mounting plates. Rollers are rotatably mounted on the surface of the wheel frames. The rollers are staggered with the slide plates.

4. The modular intelligent control system for the overall aerial relocation of cast-in-place box girders for high-speed railways according to claim 3, characterized in that: A traction seat is provided at one end of the box girder body, and a traction ring is provided at the end of the traction seat away from the box girder body. Several stress sensors are distributed at the upper end of the box girder body, and a motion detection component is also fixedly installed at the upper end of the box girder body. The motion detection component includes a speed sensor, a displacement sensor, a processor, and a wireless signal transmitter. The stress sensor, speed sensor, and displacement sensor are respectively connected to the processor via data cables, and the processor is also connected to the wireless signal transmitter via data cables.

5. The modular intelligent control system for the overall aerial relocation of cast-in-place box girders for high-speed railways according to claim 4, characterized in that: The pillars are distributed longitudinally in several groups, and the pillars are distributed laterally in several groups. Above the pillars distributed longitudinally in several groups, a crossbeam is provided. The crossbeams are distributed laterally in several groups at equal intervals. A base plate is provided above the crossbeams. Reinforcing beams are provided on the side walls of the pillars distributed laterally in several groups. Reinforcing rods are provided between two symmetrically distributed reinforcing beams. The substrate is provided with slide rail one and slide rail two above it. The number and position of slide rail one match the number and position of the slide plate, and the number and position of slide rail two match the number and position of the rollers.

6. The modular intelligent control system for the overall aerial relocation of cast-in-place box girders for high-speed railways according to claim 5, characterized in that: A side frame is provided on one side of the substrate, a side platform is provided above the side frame, and a bearing is provided above the side platform. The bearings are symmetrically distributed along both ends of the side platform. The outer ring wall of the bearing is fixedly installed to the surface of the side platform through the bracket. The bearings distributed on both sides are connected by the same shaft through their interiors. The surface of the shaft is interference-fitted with the inner ring wall of the corresponding bearing. A motor is provided at the outer end of the shaft. The motor has a drive shaft inside. The end of the shaft is fixedly installed to the end face of the shaft through a coupling.

7. A modular intelligent control system for the overall aerial relocation of cast-in-place box girders for high-speed railways according to claim 6, characterized in that: The surface of the shaft is covered with a winding roller, which is wide at both ends and narrow in the middle. A steel wire rope is wound around the surface of the winding roller. One end of the steel wire rope is fixed to the surface of the winding roller, and a pull head is welded and fixed to the end of the steel wire rope away from the winding roller. The pull head is embedded in the surface of the traction ring.

8. A modular intelligent control system for the overall aerial relocation of cast-in-place box girders for high-speed railways according to claim 7, characterized in that: The side columns are symmetrically distributed along both sides of the pad block. A top beam is provided above the side columns distributed along both sides. Several top beams are distributed longitudinally and are located above the box girder body. Several longitudinal beams are distributed at the upper end of the top beams. Side plates are provided inside the side columns distributed along one side. Several hydraulic cylinders are fixed on the inward side of the side plates. Piston rods for extension and retraction are provided inside the hydraulic cylinders. Limiting plates are provided at the ends of the piston rods away from the side plates. The limiting plates are fitted to the side walls of the box girder body.

9. A modular intelligent control system for the overall aerial relocation of cast-in-place box girders for high-speed railways according to claim 8, characterized in that: Hydraulic cylinders three are distributed above the base. The surface of hydraulic cylinders three is fixed to the upper surface of the base by bolts. Inside the hydraulic cylinders three is a piston rod three for telescopic movement. A push plate is provided at the end of the piston rod three. A push block is provided on the other side of the push plate. A partition is installed on the back of the box girder body.

10. A modular intelligent control system for the overall aerial relocation of cast-in-place box girders for high-speed railways and its construction method according to any one of claims 1-9, characterized in that: The construction method of the modular intelligent control high-speed railway cast-in-place box girder aerial integral displacement system is as follows: S1. Install the pads, legs and base of the transverse mechanism and fix them with bolts to ensure that the legs and connecting beams form a stable support structure. Position the support column, crossbeam and base plate of the front traction mechanism and install reinforcing beams and reinforcing rods to enhance overall stability. S2. Install hydraulic cylinder one and lifting plate on the base platform, evenly distributed at multiple points to ensure balanced force when the box girder body is lifted. Lift the box girder body to the predetermined height through hydraulic cylinder one, leaving space for lateral movement operation. S3. Select and install a sliding plate or roller on the mounting plate under the box girder body according to the terrain, match it with sliding track one or sliding track two, fix the traction seat and traction ring at the front end of the box girder body, and install the partition plate at the rear end. S4. Install the side columns, top beams and longitudinal beams with the limit mechanism, and adjust the limit plate by hydraulic cylinder two to fit the two sides of the box girder body to correct the position. S5. Fix the wire rope of the front traction mechanism to the traction ring through the pull head, pre-tighten the wire rope of the winding roller, start the motor to test the forward and reverse functions, and ensure that the winding roller can smoothly take in and release the wire. S6. Fix the base and hydraulic cylinder three, install the push plate and push block, and adjust the contact position between the piston rod three and the partition plate. S7. Activate the stress sensors and motion detection components on the box girder body, connect the processor to monitor the data in real time, introduce building information model and digital twin technology to realize the digitalization, intelligence and visualization of the construction process, start the PLC control system and digital twin monitoring system, monitor the status of each module in real time, ensure that the system is ready, and coordinate the front-end traction and rear-end jacking systems according to the PLC system settings to implement the overall precise lateral movement of the box girder. S8. Front-end traction: The motor drives the winding roller to take in the wire, pulling the box girder body forward along slide one or slide two. Rear-end push: The hydraulic cylinder three pushes the push block to hold the partition plate. The push block is gradually increased to achieve continuous push. The position of the box girder is adjusted in real time through the limit plate to prevent deviation. S9. After the box girder body arrives at the predetermined position, the corresponding hydraulic cylinder is controlled by the PLC system to accurately position the girder body and install permanent supports to complete the placement of the girder body. S10. Dismantle the modular connection structure and lateral movement module to facilitate rapid deployment and reuse of the next section of construction.

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