Storage and transportation system suitable for main girder storage of long-span bridge and construction technology thereof

Abstract

The application discloses a storage and transportation system suitable for a large-span bridge main beam storage beam and a construction process thereof, and the system comprises a storage beam trestle structure, a sliding seat and a traction mechanism; the storage beam trestle structure is used for supporting a storage and transportation sliding beam, a pair of storage and transportation sliding beams are arranged on the storage beam trestle structure, and the pair of storage and transportation sliding beams are arranged side by side in parallel; the sliding seat is used for bearing the main beam movement storage and transportation and is arranged on a corresponding transportation sliding beam; the sliding seat is a hollow structure sliding seat, through holes for allowing traction ropes to pass through are arranged at opposite ends of the sliding seat, and a detachable pulling mechanism is arranged at one end of the sliding seat; the traction mechanism is used for pulling the sliding seat to translate on the storage and transportation sliding beam; and the traction mechanism comprises a traction winch and traction ropes used for connecting the sliding seat and the pulling mechanism. The steel material usage is reduced, the construction period of the storage beam trestle is greatly shortened, the cost is reduced, and the storage beam trestle erection and storage and movement beam operation efficiency are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of bridge construction technology, and in particular to a storage and transportation system and its construction process suitable for storing main beams of long-span bridges. Background Technology

[0002] Currently, in bridge construction, the main girder, as the most critical load-bearing structure of various types of bridges, is the controlling project of the entire bridge construction. Its installation process is greatly affected by the environment, especially for long-span bridges, which are often accompanied by long shallow water areas and deep "V"-shaped canyons, making it impossible to transport the main girder to the installation position in one go using barges or other equipment.

[0003] Currently, there are generally three types of traditional main beam storage methods: The most widely used is sliding beam storage, which involves directly pulling the sliding block supported under the main beam with jacks or winches to slowly move the main beam to the lifting position; The second method is to use a self-powered or towable rail-mounted beam transport trolley for storage. After the main beam is stored on the trolley, the trolley is moved to transport the main beam to the lifting position, and then the beam is lowered onto a temporary support for storage; The third method is the "rail cable sliding method" with the steel truss girder installation of the Aizhai Bridge as an example. This method involves setting up an additional rail cable system and beam transport trolley to move the truss sections to the design position in the air and then connecting and assembling them.

[0004] The traditional construction process for storing main girder beams in bridges has the following limitations:

[0005] Based on past construction experience, the design of the load-bearing structure of trestle bridges typically employs a one-slide-one-bridge design, with the main beams often using a double-slide (track) design. Therefore, to meet the needs of storing and moving beams, at least two trestle bridges are required. The trestle bridges are constructed using the fishing method. To accommodate the passage of crawler cranes and the storage and transportation of beams, the width of each trestle bridge should be no less than 6 meters, and at least two rows of steel pipe piles should be arranged transversely. The construction of two trestle bridges not only requires a large amount of materials but also prolongs the construction period, which is detrimental to cost control.

[0006] like Figure 14 As shown, if a track-guided trolley is used for beam storage, temporary supports are required when lowering the main beam after it has been transported to the designated location. These temporary supports cannot be placed on the two tracks; they must be placed outside the tracks where they do not interfere with the trolley's traction and operation. Considering that the beam transport tracks and the temporary supports for beam storage are not located in the same transverse direction, this will cause eccentric loading on the trestle. To meet structural load requirements, the depth of the steel pipe piles and the number of Bailey beams on the trestle must be increased. Therefore, compared to using sliding blocks or other methods for beam storage, using a track-guided trolley requires a more complex trestle structure, more steel, extends the construction period, increases investment, and does not meet energy conservation and environmental protection requirements.

[0007] Besides the structural design of the trestle bridge, the following inherent problems exist when using traditional sliding blocks for beam storage operations: Traditional main beam sliding blocks mostly adopt closed box-type or columnar structures. During segmented hoisting and storage, often only the first main beam can be pulled along the traction track in the bridge direction. When subsequent main beams slide, they are affected by the closed sliding blocks of the already stored main beams, and the traction wire rope cannot be aligned along the center line of the track to pull the remaining main beam sliding blocks. Therefore, in order to avoid the sliding blocks of the already stored beam segments, traditional main beam sliding traction uses side-out ropes at an angle (e.g., Figure 15 As shown, due to misalignment of the traction position and inconsistent winch rope winding speed, the main beam and slider are in a twisted posture during traction under the influence of eccentric force. Significant frictional resistance exists between the slider and the lateral limit switch of the slide rail, requiring slow traction and frequent stops to adjust the winch rope winding speed and slider posture, greatly impacting the efficiency of the main beam sliding. While using a track trolley for beam storage can achieve centered traction, the aforementioned eccentric loading problem of the trestle bridge during beam storage and transport system conversion remains unresolved. Using a jack-assisted sliding beam requires repeated replacement of the reaction seat and adjustment of the precision-rolled threaded steel, resulting in low efficiency for sliding the main beam.

[0008] The "cable-rail sliding method" is often used in locations where terrain limitations prevent the use of barges or other equipment to transport the entire precast main girder to the bridge site in one go. For projects where the conditions allow for the transport of the entire main girder to the bridge site, this method not only requires the additional laying of a cable-rail system, but also only allows the transport of small truss sections to the designed high-altitude position for assembly at a time. This results in low construction efficiency, high safety risks, and is not suitable for welded steel box girders.

[0009] As can be seen from the above, traditional trestle bridges are unreasonable in terms of load-bearing structure design, beam storage and transportation construction methods, and slider design, failing to fully utilize the trestle bridge's load-bearing potential and beam storage efficiency. The unreasonable structure significantly increases the complexity of the beam storage trestle bridge structure and the amount of steel used. Regarding the main beam storage and transportation methods, the lack of reasonable arrangement of traction equipment and selection of appropriate traction methods and components leads to low sliding efficiency, often affecting the unloading or towing of subsequent main beams due to the inability of the previous main beam to slide into position in time. The "rail-cable sliding method," as a product of special construction conditions, has relatively limited application value and is not suitable for widespread application at bridge sites in wide waterways. Summary of the Invention

[0010] To address the shortcomings of existing technologies, this invention provides a storage and transportation system and its construction process suitable for storing main beams of long-span bridges, aiming to achieve cost savings and simple and efficient construction.

[0011] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0012] A storage and transportation system suitable for storing main beams of long-span bridges includes a storage trestle structure, a sliding seat, and a traction mechanism.

[0013] The storage bridge structure is used to support the storage and transport slide beams. The storage bridge structure is equipped with a pair of storage and transport slide beams, which are arranged side by side in parallel.

[0014] The slide block is used to support the movement and storage of the main beam. It is installed on the corresponding transport slide beam. The slide block is a hollow structure slide block. Both ends of the slide block are provided with through holes for the traction rope to pass through. One end of the slide block is provided with a detachable pulling mechanism.

[0015] The traction mechanism is used to move the slide block horizontally on the storage and transport slide beam; the traction mechanism includes a traction winch and a traction rope that passes through the slide block and is connected to the pulling mechanism.

[0016] The storage bridge structure includes steel pipe piles, main crossbeams, Bailey bridges, and distribution beams. The main crossbeams are mounted on the steel pipe piles, and the distribution beams are mounted on the main crossbeams via a set of Bailey bridges. The transport slide beams are mounted on the distribution beams.

[0017] The slide includes a top plate and a bottom plate, which are connected by welding with channel steel to form a hollow integral slide. The end of the integral slide is provided with a head plate, and the head plate is provided with a through hole.

[0018] The traction mechanism includes two traction winches, which are located on the bridge bank side and connected to each other via a winch synchronization controller.

[0019] A reinforced Bailey bridge is installed directly below the storage and transport slide beam.

[0020] The pulling mechanism includes a connecting plate and a pair of connecting lugs on the connecting plate. Each pair of connecting lugs is provided with a pin hole, and a connecting pin shaft for connecting a detachable traction rope is provided in the pin hole. The connecting plate is welded to the end plate, and the connecting plate is provided with an opening for the traction rope to pass through.

[0021] Both sides of the storage and transport slide beam are equipped with limiting guide plates for limiting and guiding the slide seat.

[0022] The main body of the traction winch is located on one side of the storage and transport slide beam, and a steering wheel for adjusting the traction rope is provided on the traction winch directly above the storage and transport slide beam.

[0023] A construction process utilizing the aforementioned storage and transportation system suitable for storing main beams of long-span bridges includes the following steps:

[0024] Step 1: Sinking of steel pipe piles;

[0025] Step 2: Installation of the main crossbeam;

[0026] Step 3: Pre-assembly of encrypted Bailey beams;

[0027] Step 4: Bailey beam installation;

[0028] Step 5: Install Bailey beam scissor bracing;

[0029] Step Six: Install the transverse distribution beams;

[0030] Step 7: Install longitudinal distribution beams;

[0031] Step 8: Installation of the storage and transport slide beam;

[0032] Step Nine: Installation of the traction mechanism and guide wheels;

[0033] Step 10: Machining the hollow structure slide block;

[0034] Step 11: Processing the pulling mechanism;

[0035] Step 12: Trial assembly of the traction wire rope, slide block, and pulling mechanism;

[0036] Step Thirteen: Lifting the beam segment;

[0037] Step Fourteen: Connect the slide block to the stiffening beam of the beam segment;

[0038] Step 15: Preparation for beam relocation;

[0039] Step 16: Connect the slide block to the traction mechanism;

[0040] Step 17: Tow and transport the stiffening beam to the storage location;

[0041] Step 18: Remove the pulling mechanism on the slide block, and pull the traction rope through the center of the hollow structure slide block of the existing beam segment;

[0042] Step 19: The reverse transport and pulling mechanism pulls the traction steel cable along the top of the storage and transport slide beam to the riverside end of the trestle bridge;

[0043] Step 20: Repeat the process until the beam storage is complete.

[0044] Compared with the prior art, the present invention has the following advantages:

[0045] This storage and transportation system for main beams of long-span bridges is rationally designed and its construction process overcomes the problems of frequent eccentric traction, scraping of the sliding track, and large-tonnage eccentric loads caused by the conversion of the storage system after the beam is moved into place, which are problems of traditional methods. It realizes parallel and rapid traction of steel box girders along the storage and transportation track beam, while fundamentally simplifying the structure of the storage trestle, improving steel utilization efficiency, reducing steel consumption, significantly shortening the construction period of the storage trestle, and reducing costs. It greatly improves the efficiency of the erection of the storage trestle and the operation of storing and moving beams. This method has wide applicability to the erection of storage trestle and the operation of storing and moving main beams under similar construction conditions in the future. Attached Figure Description

[0046] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:

[0047] Figure 1 This is a cross-sectional layout diagram of the beam storage trestle bridge of the present invention.

[0048] Figure 2 This is a plan view of the traction system of the present invention.

[0049] Figure 3 This is an elevation layout diagram of the traction system of the present invention.

[0050] Figure 4 This is a cross-sectional view of the traction system of the present invention.

[0051] Figure 5 This is a side view of the hollow structure slide of the present invention.

[0052] Figure 6 This is a cross-sectional view of the slide block of the present invention.

[0053] Figure 7 This is a structural diagram of the detachable pulling mechanism of the present invention.

[0054] Figure 8 This is a side view of the traction slide of the present invention.

[0055] Figure 9 This is a cross-sectional view of the traction slide of the present invention.

[0056] Figure 10 This is a plan view of the parallel traction of the remaining beam segments in the traction system of the present invention.

[0057] Figure 11 This is a parallel traction elevation layout diagram of the traction system of the present invention.

[0058] Figure 12 This is a cross-sectional view of the traction steel wire rope passing through the existing beam section slide of the present invention.

[0059] Figure 13 This invention relates to the layout of the beam storage trestle and the rapid beam storage construction process.

[0060] Figure 14 This is a schematic diagram of the eccentric loading of the existing track trolley and temporary supports for storing and transporting beams.

[0061] Figure 15 This is a plan view showing the oblique eccentric traction arrangement of the remaining beam segments for the traditional main beam storage and relocation.

[0062] In the picture:

[0063] 1. Steel pipe piles, 2. Horizontal bracing, 3. Main crossbeam, 4. Bailey bridge beam, 5. Storage and transport slide beam.

[0064] 6. Slide, 601. Top plate, 602. Bottom plate, 603. Engineering plastic alloy plate, 604. End plate, 605. Connecting plate, 606. Connecting lug plate, 607. Connecting pin,

[0065] 7. Steel box girder, 8. Movable pulley, 9. Fixed pulley, 10. Steering wheel, 11. Traction winch, 12. Base, 13. Traction rope. Detailed Implementation

[0066] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and through the description of the examples.

[0067] like Figures 1 to 13 As shown, this storage and transportation system for storing main beams of long-span bridges includes a storage trestle structure, a sliding seat, and a traction mechanism. The storage trestle structure supports the storage and transportation sliding beam 5, and a pair of storage and transportation sliding beams are arranged side by side on the storage trestle structure. The sliding seat 6 is used to carry the moving storage and transportation of the steel box girder 7 and is set on the corresponding transportation sliding beam. The sliding seat is a hollow structure with through holes at both ends for the traction rope to pass through. One end of the sliding seat is equipped with a detachable pulling mechanism. The traction mechanism is used to pull the sliding seat to move horizontally on the storage and transportation sliding beam. The traction mechanism includes a traction winch 11 and a traction rope 13 for passing through the sliding seat and connecting to the pulling mechanism.

[0068] The new type of storage bridge structure includes steel pipe piles 1, main crossbeams 3, Bailey beams 4, and distribution beams. The pile length and diameter of the steel pipe piles and the main crossbeams are selected based on the load calculation results of the steel box girder and are connected by horizontal bracing 2. There are a total of four Bailey beams. Among them, the dense Bailey beams and large-diameter steel pipe piles are arranged directly below the storage and transport slide beam, and the other two sets of conventional Bailey beams are arranged in parallel at equal intervals between the dense Bailey beams. Shear bracing is set between each pair of Bailey beams. The transverse distribution beams, longitudinal distribution beams, and storage and transport slide beams are then arranged sequentially on the Bailey beams. This type of bridge structure is simple and has a clear stress distribution. A single bridge can simultaneously meet the needs of bridge erection and double-track sliding of the main beam, and is not affected by eccentric loads.

[0069] The new type of slide includes a top plate 601 and a bottom plate 602. The top plate and the bottom plate are welded together by channel steel to form a hollow integral slide. The end of the integral slide is provided with a head plate, and the head plate 604 is provided with a through hole. The pulling mechanism includes a connecting plate 605 and a pair of connecting ear plates 606 provided on the connecting plate. Each pair of connecting ear plates is provided with a pin hole, and a connecting pin 607 for connecting the traction rope is provided in the pin hole. The connecting plate is welded to the head plate, and the connecting plate is provided with an opening for the traction rope to pass through.

[0070] Preferred, such as Figures 5 to 7 As shown, the hollow structure slide block consists of double-layered channel steel with back fastening, upper and lower support plates, engineering plastic alloy plates, stop blocks, and end plates (which also serve as connecting plates for the pulling device). The upper and lower support plates and double-layered channel steel with back fastening are welded together to create a rectangular hollow box-shaped structure as the slide block body. After the slide block is fabricated, the engineering plastic alloy plates 603, stop blocks, and end plates are connected sequentially to complete the slide block fabrication. The end plates have openings to facilitate connection with the pulling mechanism; the engineering plastic alloy plates reduce sliding friction and provide high wear resistance. This type of slide block meets the sliding requirements of the steel box girder while also allowing the traction steel wire rope to pass through the center of the slide block. This hollow structure slide block is key to achieving horizontal traction along the storage and transport track beam.

[0071] The portable, quick-connect sliding block pulling mechanism consists of a connecting plate, ear plates, and a traction connecting pin. The connecting plate has a square hole in the middle and is welded to the ear plate to form the pulling mechanism. When performing traction operations, the pulling device and the slider are connected first, then the traction wire rope is passed through the opening in the connecting ear plate, and finally the pin is inserted to complete the connection between the entire traction system and the sliding block.

[0072] The traction mechanism includes two traction winches 11, which are located on the bridge bank side and connected to each other by a winch synchronization controller. The main body of the traction winch is located on one side of the storage and transport slide beam, and a steering wheel 10 for adjusting the traction rope is provided on the traction winch directly above the storage and transport slide beam.

[0073] Both sides of the storage and transport slide beam are equipped with limiting guide plates for limiting and guiding the slide seat, ensuring stable and reliable operation. To fix the winch, the base 12 is first welded to the transverse distribution beam of the trestle bridge, then the winch is connected to the base beam. Steering wheels are installed at the intersection of the winch's rope output direction and the slide beam to adjust the guidance and position of the traction rope, ensuring it is directly above the slide beam. The traction rope is guided by fixed pulley 9 and movable pulley 8.

[0074] This invention provides a single-span trestle bridge that can simultaneously meet the needs of trestle bridge erection and double-track sliding of main beams. Based on the characteristics of the longitudinal and transverse diaphragm structure of the steel box girder in this project, the spacing of the storage and transport slides and the type of sliding seats were rationally designed, ultimately achieving the merging of two trestle bridges into one, unaffected by eccentric loads. This significantly simplifies the structure of the storage trestle bridge, greatly reduces steel consumption, shortens the construction period, and significantly improves economic efficiency. A portable, quick-connecting sliding seat pulling mechanism, used in conjunction with the trestle bridge, enables the simultaneous pulling of all main beams along the centerline of the storage and transport slides while also simplifying the sliding seat structure. Two traction winches, a winch synchronization controller, and steering wheels are arranged at the end of the storage trestle bridge on the shore side. Using the new sliding seats and the new pulling device, all main beams can be simultaneously pulled along the centerline of the storage and transport slides. During the main beam sliding operation along the centerline of the storage and transport track, the sliding blocks are only subjected to traction force in the direction parallel to the track, without causing any torsional effect on the main beam's posture or other sliding blocks. All sliding blocks and tracks maintain smooth contact, and their running trajectory strictly adheres to the track's centerline. The sliding blocks do not rub against the track's limiting devices, eliminating the need for frequent stops to adjust their posture, thus greatly improving the efficiency of the main beam sliding operation. By comprehensively utilizing the new storage and transport system and its supporting processes, the simultaneous sequential traction of all main beams along the centerline of the storage and transport track on a single-span trestle bridge was ultimately achieved. This plays a crucial role in saving materials for the storage trestle bridge, optimizing its load-bearing capacity, improving construction efficiency, reducing construction costs, and enabling rapid sliding and traction of the main beams.

[0075] The present invention utilizes the construction technology of the storage and transportation system applicable to the main beam storage of long-span bridges, including the following steps:

[0076] Step 1: Pipe pile driving; Step 2: Main crossbeam installation; Step 3: Pre-assembly of reinforced Bailey bridge beams; Step 4: Bailey bridge beam installation; Step 5: Bailey bridge beam scissor bracing installation; Step 6: Transverse distribution beam installation; Step 7: Longitudinal distribution beam installation; Step 8: Storage and transport slide beam installation; Step 9: Traction mechanism and guide wheel installation; Step 10: Hollow structure slide block processing; Step 11: Pulling mechanism processing; Step 12: Trial assembly of traction wire rope with slide block and pulling mechanism; Step 13: Beam segment lifting; Step 14: Connection of slide block to stiffening beam of beam segment; Step 15: Beam moving preparation; Step 16: Connection of slide block and traction mechanism; Step 17: Traction and transport stiffening beam to storage position; Step 18: Remove the pulling mechanism on slide block, pull the traction rope through the center of the hollow structure slide block of the stored beam segment; Step 19: Reverse the pulling mechanism, pull the traction wire rope along the top of the storage and transport slide beam to the riverside end of the trestle bridge; Step 20: Repeat until the beam storage is completed.

[0077] The specific implementation process is as follows:

[0078] The storage trestle bridge employs the "fishing method" for driving steel pipe piles and installing the main crossbeams. Bailey bridge beams are pre-assembled according to their span and the number of parallel sections, then hoisted as a whole to the design position for pin connections and scissor bracing installation. During installation, the transverse position of the Bailey bridge beams is strictly controlled. After the Bailey bridge beams are installed, the transverse distribution beams, longitudinal distribution beams, and storage slide beams are installed sequentially. The traction mechanism is then deployed after the foundation of the storage trestle bridge is erected.

[0079] Both the traction winch and the steering wheel are located at the end of the girder storage trestle near the shore. The position of the steering wheel is adjusted to ensure the rope direction is directly above the storage and transport slide beam. The sliding block and pulling mechanism are connected and stored at the riverside end of the trestle in advance. When the floating crane lifts the steel box girder onto the trestle, the sliding block and the steel box girder are connected promptly. Then, the traction rope is moved through the sliding block and connected to the sliding block via a pin. The traction direction of the wire rope is finely adjusted to ensure it is strictly aligned with the center line of the sliding block and the center line of the slide beam. Finally, the winch is started to reel in the rope, pulling the stiffening girder until it stops at the designed storage position.

[0080] After the first steel box girder is pulled to the designed position, the pulling mechanism is dismantled. This mechanism is relatively lightweight and can be manually moved to the riverside end of the trestle bridge after dismantling to continue the sliding construction of the next steel box girder. Simultaneously, the pulling rope is pulled through the hollow structure of the pulling slide block to reach the riverside (e.g., Figure 11 (As shown), and prepare for the traction of the next stiffening girder, repeating this process until all steel box girders are stored.

[0081] The key innovation of this invention is:

[0082] ① The design of the new type of storage bridge structure was based on a comprehensive study of the stress characteristics of the storage bridge structure under different load conditions. By laying dense parallel Bailey beams directly under the storage and transport slide beam, the structural strength and stiffness of the storage and transport slide beam location were strengthened. After modeling and calculation, the goal of simultaneously meeting the requirements of bridge erection and double-track sliding main beam on a single bridge was finally achieved.

[0083] ② The design and use of a novel hollow-structure sliding block and a portable, quick-connecting pulling mechanism for the sliding block are key to the traction and sliding of steel box girders along the centerline of the transport and storage track. This sliding block structure has a continuous hole in the middle section along the bridge direction. When traction of the steel box girder is required, connecting the pulling device and the sliding block forms a tractionable sliding block structure, quickly pulling the steel box girder to the designed storage position. Once in place, removing the pulling mechanism restores the hollow structure of the sliding block, allowing the traction steel wire rope to pass smoothly through it, continuing the traction and sliding of the next steel box girder along the centerline of the transport and storage track. This type of sliding block achieves, for the first time, the traction, sliding, and storage of all steel box girders along the centerline of the track.

[0084] ③ Application of the new storage and transportation system: By arranging two winches transversely at the end of the storage bridge on the shore side, the position of the traction wire rope after exiting the winch is adjusted by the steering wheel to be directly above the center line of the storage and transportation slide beam, so as to meet the needs of the traction wire rope passing through the hollow structure slide and being pulled along the center line of the storage and transportation slide, the operation is stable and reliable.

[0085] This invention overcomes the problems of frequent eccentric traction and scraping of the sliding track in traditional methods, as well as the large-tonnage eccentric load problems that occur when converting the storage system after the beam is moved into place. It realizes parallel and rapid traction of steel box girders along the storage and transport track beam, while fundamentally simplifying the structure of the storage trestle, improving steel utilization efficiency, reducing steel consumption, significantly shortening the construction period of the storage trestle, and reducing costs. It greatly improves the efficiency of the storage trestle erection and beam storage and movement operations. This method has wide applicability to the erection of storage trestle and the main beam storage and movement operations under similar construction conditions in the future.

[0086] The above description is merely an illustration of preferred embodiments of the present invention, and the above technical features can be arbitrarily combined to form multiple embodiments of the present invention.

[0087] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the concept and technical solution of the present invention, or the direct application of the concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A storage and transportation system suitable for storing main beams of long-span bridges, characterized in that: include: A storage bridge structure is used to support storage and transport slide beams. The storage bridge structure is equipped with a pair of storage and transport slide beams, which are arranged side by side in parallel. The slide block is used to support the movement and storage of the main beam. It is set on the corresponding transport slide beam. The slide block is a hollow structure slide block. Both ends of the slide block are provided with through holes for the traction rope to pass through. One end of the slide block is provided with a detachable pulling mechanism. A traction mechanism is used to move the slide block horizontally on the storage and transport slide beam; the traction mechanism includes a traction winch and a traction rope that passes through the slide block and is connected to the pulling mechanism; in, The slide includes a top plate and a bottom plate, which are welded together by channel steel to form a hollow integral slide. The end of the integral slide is provided with a head plate, which has a through hole. The pulling mechanism includes a connecting plate and a pair of connecting lugs on the connecting plate. Each pair of connecting lugs has a pin hole, in which a detachable connecting pin is provided for connecting a traction rope. The connecting plate is welded to the head plate, and the connecting plate has an opening for the traction rope to pass through. Both sides of the storage and transport slide beam are provided with limiting guide plates for limiting and guiding the slide. The traction mechanism includes two traction winches, which are located on the bridge bank side and connected to each other via a winch synchronization controller.

2. The storage and transportation system for storing main beams of long-span bridges as described in claim 1, characterized in that: The storage bridge structure includes steel pipe piles, main crossbeams, Bailey bridges, and distribution beams. The main crossbeams are mounted on the steel pipe piles, and the distribution beams are mounted on the main crossbeams via a set of Bailey bridges. The storage and transport slide beams are mounted on the distribution beams.

3. The storage and transportation system for storing main beams of long-span bridges as described in claim 2, characterized in that: A reinforced Bailey bridge is installed directly below the storage and transport slide beam.

4. The storage and transportation system for storing main beams of long-span bridges as described in claim 1, characterized in that: The main body of the traction winch is located on one side of the storage and transport slide beam, and a steering wheel for adjusting the traction rope is provided on the traction winch directly above the storage and transport slide beam.

5. A construction process utilizing a storage and transportation system for storing main beams of long-span bridges as described in any one of claims 1 to 4, characterized in that: The construction process includes the following steps: Step 1: Sinking of steel pipe piles; Step 2: Installation of the main crossbeam; Step 3: Pre-assembly of encrypted Bailey beams; Step 4: Bailey beam installation; Step 5: Install Bailey beam scissor bracing; Step Six: Install the transverse distribution beams; Step 7: Install longitudinal distribution beams; Step 8: Installation of the storage and transport slide beam; Step Nine: Installation of the traction mechanism and guide wheels; Step 10: Machining the hollow structure slide block; Step 11: Processing the pulling mechanism; Step 12: Trial assembly of the traction wire rope, slide block, and pulling mechanism; Step Thirteen: Lifting the beam segment; Step Fourteen: Connect the slide block to the stiffening beam of the beam segment; Step 15: Preparation for beam relocation; Step 16: Connect the slide block to the traction mechanism; Step 17: Tow and transport the stiffening beam to the storage location; Step 18: Remove the pulling mechanism on the slide block, and pull the traction rope through the center of the hollow structure slide block of the existing beam segment; Step 19: The reverse transport and pulling mechanism pulls the traction steel cable along the top of the storage and transport slide beam to the riverside end of the trestle bridge; Step 20: Repeat the process until the beam storage is complete.

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