Movable auxiliary construction device for steel-concrete composite beam cast-in-situ bridge deck and application method thereof

Abstract

This invention relates to a mobile auxiliary construction device and application method for cast-in-place steel-concrete composite beam bridge decks, belonging to the field of bridge engineering construction technology. It includes bridge piers and the steel box girder formwork on top of them. A mobile auxiliary construction frame is erected above the steel box girder formwork, with a horizontal conveyor belt and walking platforms located on both sides of the conveyor belt. A concrete pouring and vibration mechanism is mounted below the mobile auxiliary construction frame. Moving track mechanisms are provided on both sides of the steel box girder formwork to support the movement of the mobile auxiliary construction frame, allowing it to move along the extension direction of the steel box girder formwork. Fixed frame structures and mobile conveyor platforms fixed to the fixed frame structures are provided on both sides of the bridge piers. When fixed to the fixed frame structures, the mobile conveyor platforms connect with the horizontal conveyor belt that moves with the mobile auxiliary construction frame to the top of the bridge pier to transport materials to the horizontal conveyor belt.

Description

Technical Field

[0001] This invention relates to the field of bridge engineering construction technology, and in particular to a mobile auxiliary construction device and application method for cast-in-place bridge decks of steel-concrete composite beams. Background Technology

[0002] With the rapid development of infrastructure construction, the requirements for the construction safety, efficiency, and overall stability of engineering structures, especially bridges, are becoming increasingly stringent. Therefore, the exploration and practice of new methods, technologies, and equipment for bridge construction are constantly evolving. In the construction stage of cast-in-place steel-concrete composite beam bridge decks, after the steel box girder formwork is arranged, pre-stressing of the formwork is applied to reduce stress deformation before concrete pouring.

[0003] Preloading of the formwork needs to be carried out on the viaduct. From the application of preloading to the removal of preloading, it involves transporting the preloading material, that is, the loading material, from bottom to top into the steel box girder formwork and spreading it evenly to apply pressure evenly. Then, when unloading the material, it is also necessary to transport the loading material from top to bottom. This unloading process will consume a lot of construction manpower and will also consume a lot of construction time. In order to improve construction efficiency, improvements can be made in the construction stage of cast-in-place bridge deck of steel-concrete composite beam by improving the efficiency of loading material handling.

[0004] Therefore, based on the above-mentioned technical problems, those skilled in the art urgently need to develop mobile auxiliary construction devices and application methods for cast-in-place bridge decks of steel-concrete composite beams. Summary of the Invention

[0005] The purpose of this invention is to provide a mobile auxiliary construction device and application method for cast-in-place bridge decks of steel-concrete composite beams in order to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: The present invention provides a mobile auxiliary construction device for cast-in-place steel-concrete composite beam bridge deck, comprising bridge piers and steel box girder formwork on top of them, a mobile auxiliary construction frame erected above the steel box girder formwork, a horizontal conveyor belt and walking platforms located on both sides of the horizontal conveyor belt on the mobile auxiliary construction frame, and a concrete pouring and vibration mechanism suspended below the mobile auxiliary construction frame. The steel box girder template is provided with a moving track mechanism on both sides to support the movement of the mobile auxiliary construction frame, so that the mobile auxiliary construction frame can move along the extension direction of the steel box girder template. The bridge pier is provided with a fixed frame structure on both sides and a mobile conveying platform fixed on the fixed frame structure. When the mobile conveying platform is fixed on the fixed frame structure, it connects with the horizontal conveyor belt that moves with the mobile auxiliary construction frame to the top of the bridge pier to convey materials to the horizontal conveyor belt.

[0007] Furthermore, the walking platform is arranged parallel to the horizontal conveyor belt, and both ends of the walking platform and the horizontal conveyor belt extend beyond the outside of the mobile auxiliary construction frame to connect with the mobile conveyor platform.

[0008] Furthermore, the concrete pouring and vibration mechanism includes a support hanger connected to the bottom of the mobile auxiliary construction frame and a lifting plate that can be raised and lowered connected to the bottom of the support hanger. Multiple concrete vibrators are continuously fixed on the lifting plate along its lateral extension direction.

[0009] Furthermore, an electric hoist is installed on the top of the mobile auxiliary construction frame to control the lifting and moving of the lifting plate.

[0010] Furthermore, the movable track mechanism includes a first support frame fixedly connected to both sides of the steel box girder template, and a movable track is provided on the first support frame to support and drive the movable auxiliary construction frame to move.

[0011] Furthermore, the fixing frame structure includes a second support frame fixedly connected to both sides of the bridge pier, and the second support frames on both sides of the bridge pier are connected by anchor rods.

[0012] Furthermore, the mobile conveying platform includes an upper conveying platform and a lower mobile carrier, the lower mobile carrier being used to move the upper conveying platform.

[0013] Furthermore, the upper conveying platform includes a platform frame, on which an inclined conveyor belt and an inclined hopper are inclinedly arranged on the side away from the second support frame, and the inclined hopper is located below the inclined conveyor belt.

[0014] Furthermore, the lower mobile carrier includes a load carrier, which is equipped with a hydraulic cylinder for lifting the platform frame. The platform frame is vertically connected to a first docking column at its bottom, and the heavy-duty tractor is provided with a first docking slot into which the first docking column is inserted. A second docking column is fixedly connected to the side of the platform frame facing the second support frame. The bottom of the second support frame is provided with a second docking slot into which the second docking column is inserted. When the platform frame is lifted by the hydraulic cylinder, the second docking column is inserted into the second docking slot for docking.

[0015] The application method of the mobile auxiliary construction device for cast-in-place steel-concrete composite beam bridge deck includes the following application steps: Step 1: Construct the mobile auxiliary construction frame and the fixed frame structure, and move the mobile conveyor platform to the location of the fixed frame structure for installation; Step 2: Move the mobile auxiliary construction frame so that the horizontal conveyor belt is above the fixed frame structure of the mobile conveyor platform to be installed, and at the same time, the horizontal conveyor belt is above the bridge pier column where the fixed frame structure is located. Step 3: After the mobile conveying platform is fixed to the fixed frame structure, the loading material for preloading the cast-in-place bridge deck formwork is conveyed onto the horizontal conveyor belt using the mobile conveying platform. Step 4: Use a walking platform to allow people to walk and unload the loading material from the horizontal conveyor belt, so that it can be evenly loaded onto the steel box girder formwork for pre-stressing of the cast-in-place bridge deck formwork. Step 5: After pre-stressing the formwork, unload the loaded material. Transport the loaded material on the steel box girder formwork to the mobile conveyor platform via a horizontal conveyor belt. Use the mobile conveyor platform to unload the material downwards, and then remove the mobile conveyor platform. Step 6: Vibrate and smooth the concrete poured on the steel box girder formwork using a concrete pouring vibration and compaction machine.

[0016] The mobile auxiliary construction device and application method for cast-in-place steel-concrete composite beam bridge decks provided by the present invention have the following beneficial effects: This auxiliary device can transport the pre-stressed loading material of the cast-in-place bridge deck formwork upwards via a mobile conveyor platform and a horizontal conveyor belt. The two are connected at the bridge piers to achieve continuous transport and ensure that the bridge body is under balanced and stable stress during the transport process. The mobile auxiliary construction frame is then moved to pre-stress the steel box girder formwork of the cast-in-place bridge deck, improving work efficiency. In addition, the mobile conveyor platform makes material transport more labor-saving and improves construction efficiency. Furthermore, the concrete pouring and vibration mechanism assists in vibrating and leveling the concrete of the cast-in-place bridge deck, effectively assisting in the construction of the cast-in-place bridge deck of the steel-concrete composite beam. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a structural schematic diagram of the mobile auxiliary construction device and application method for cast-in-place steel-concrete composite beam bridge deck provided in an embodiment of the present invention. Figure 2A schematic diagram of the mobile auxiliary construction frame and fixed frame structure of the mobile auxiliary construction device and application method for cast-in-place steel-concrete composite beam bridge deck provided in the embodiments of the present invention. Figure 3 A schematic diagram of the structure of the mobile conveying platform for the mobile auxiliary construction device and application method of cast-in-place steel-concrete composite beam bridge deck provided in the embodiments of the present invention; Figure 4 This is a top view of the horizontal conveyor belt and the walking platforms on both sides of it for the mobile auxiliary construction device and application method for cast-in-place steel-concrete composite beam bridge deck provided in an embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures: 1. Bridge piers; 2. Steel box girder formwork; 3. Mobile auxiliary construction frame; 4. Horizontal conveyor belt; 5. Walking platform; 6. Support hanger; 7. Lifting platform; 8. Concrete vibrator; 9. Electric hoist; 10. First support frame; 11. Moving track; 12. Second support frame; 13. Platform frame; 14. Inclined conveyor belt; 15. Inclined unloading hopper; 16. Load-bearing trolley; 17. Hydraulic cylinder; 18. First docking column; 19. First docking slot; 20. Second docking column; 21. Second docking slot. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0021] Please see Figure 1-4 The mobile auxiliary construction device for cast-in-place steel-concrete composite beam bridge deck includes bridge pier 1 and the steel box girder formwork 2 on top of it. This structure is the foundation of the cast-in-place bridge deck. The bridge deck is formed by pouring concrete on the formwork. A mobile auxiliary construction frame 3 is erected above the steel box girder formwork 2. A horizontal conveyor belt 4 and walking platforms 5 located on both sides of the horizontal conveyor belt 4 are installed on the mobile auxiliary construction frame 3. A concrete pouring vibration mechanism is hung below the mobile auxiliary construction frame 3. The mobile auxiliary construction frame 3 can carry the horizontal conveyor belt 4, the walking platforms 5 and the concrete pouring vibration mechanism to move along the steel box girder formwork 2 so that the horizontal conveyor belt 4 can be moved to the appropriate position for use, and the concrete pouring vibration mechanism can vibrate and level the concrete during the movement of the mobile auxiliary construction frame 3. The steel box girder formwork 2 is provided with a moving track mechanism on both sides to support the movement of the mobile auxiliary construction frame 3, so that the mobile auxiliary construction frame 3 can move along the extension direction of the steel box girder formwork 2; Fixed frame structures and mobile conveyor platforms fixed to the fixed frame structures are installed on both sides of the bridge pier 1. When the mobile conveyor platform is fixed to the fixed frame structure, it connects with the horizontal conveyor belt 4 that moves above the bridge pier 1 along with the mobile auxiliary construction frame 3 to convey materials to the horizontal conveyor belt 4. The mobile conveyor platform is fixed to the bridge pier 1 through the fixed frame structure. At the same time, the mobile conveyor platform can be moved after being disassembled from the fixed frame structure, which improves the flexibility of the structure and reduces the impact on road traffic when it is used in areas with highways. In addition, the mobile conveyor platform is fixed to the bridge pier 1 so that it can connect with the horizontal conveyor belt 4 when it moves above the bridge pier 1, so as to realize continuous material conveying. At the same time, all of them are located at the position of the bridge pier 1 for support, so as to avoid affecting the stress on the steel box girder formwork 2 when loading and unloading materials.

[0022] Furthermore, the walking platform 5 is set parallel to the horizontal conveyor belt 4. Both ends of the walking platform 5 and the horizontal conveyor belt 4 extend outward from the outside of the mobile auxiliary construction frame 3 to connect with the mobile conveying platform. The length extension of both ends of the walking platform 5 and the horizontal conveyor belt 4 is to cover the width of the steel box girder template 2 and to better connect with the mobile conveying platform to achieve continuous material transportation.

[0023] Furthermore, the concrete pouring vibration mechanism includes a support hanger 6 connected to the bottom of the mobile auxiliary construction frame 3 and a lifting plate 7 that can be raised and lowered connected to the bottom of the support hanger 6. A telescopic rod-type guide structure can be used between the lifting plate 7 and the support hanger 6 to guide and support, so as to stabilize the lifting state of the lifting plate 7 and avoid swaying and other situations. Multiple concrete vibrators 8 are continuously fixed on the lifting plate 7 along its lateral extension direction. The lifting plate 7 drives the multiple concrete vibrators 8 to rise and fall synchronously, so as to realize the vibration and smoothing of the bridge deck concrete in the entire lateral area, thereby improving construction efficiency.

[0024] Furthermore, the top of the mobile auxiliary construction frame 3 is equipped with an electric hoist 9 to control the lifting plate 7 to rise and move. When using the mobile conveying platform to transport materials, the electric hoist 9 controls the lifting plate 7 to rise to avoid obstacles. When vibrating and smoothing the bridge deck concrete, the electric hoist 9 controls the lifting plate 7 to descend.

[0025] Furthermore, the mobile track mechanism includes a first support frame 10 fixedly connected to both sides of the steel box girder template 2. A mobile track 11 is provided on the first support frame 10 to support and drive the movement of the mobile auxiliary construction frame 3. The mobile track 11 adopts the rail conveyor line in industrial automation in the prior art. It is composed of multiple functional modules working together to achieve heavy-duty, high-precision, continuous and stable material or equipment movement. It has units such as a track system, a sliding seat system, a drive system, a positioning module, and a drive control module. It is the prior art and will not be described in detail. This mechanism is only for supporting and driving the movement of the mobile auxiliary construction frame 3.

[0026] The first support frame 10 can be fixed to both sides of the steel box girder formwork 2 using conventional methods such as corbel support and connectors to provide stable support.

[0027] Furthermore, the fixing frame structure includes a second support frame 12 fixedly connected to both sides of the bridge pier 1. The second support frames 12 on both sides of the bridge pier 1 are connected by anchor rods. The second support frames 12 can be fixed to both sides of the bridge pier 1 by conventional methods such as corbel support and connector connection to provide stable support. At the same time, the anchor rods connecting the two second support frames 12 on both sides of the bridge pier 1 can be tightened and fixed to improve the stability of the fixing.

[0028] Furthermore, the mobile conveying platform includes an upper conveying platform and a lower mobile carrier. The lower mobile carrier is used to move the upper conveying platform. The upper conveying platform is designed as a detachable structure on the lower mobile carrier to improve the flexibility of the mobile conveying platform and reduce the impact on the road traffic below with the support of the bridge pier 1.

[0029] Furthermore, the upper conveying platform includes a platform frame 13. An inclined conveyor belt 14 and an inclined hopper 15 are inclinedly arranged on the side of the platform frame 13 away from the second support frame 12. The inclined hopper 15 is located below the inclined conveyor belt 14. The inclined conveyor belt 14 is used to convey materials upward to the horizontal conveyor belt 4. When unloading, the materials are conveyed by the horizontal conveyor belt 4 and then fall directly onto the inclined hopper 15, allowing the materials to slide freely. The staggered distribution of the inclined conveyor belt 14, the inclined hopper 15 and the horizontal conveyor belt 4 can greatly coordinate the spatial layout of loading and unloading, thereby improving work efficiency under this layout. In addition, the inclined hopper 15 does not use energy, making it more energy-efficient and convenient.

[0030] Furthermore, the lower mobile carrier includes a load carrier 16, on which a hydraulic cylinder 17 for lifting platform frame 13 is installed. The platform frame 13 is vertically connected to the bottom of a first docking post 18, and the heavy-duty carrier 16 is provided with a first docking slot 19 for inserting the first docking post 18. A second docking post 20 is fixedly connected to the side of the platform frame 13 facing the second support frame 12. The bottom of the second support frame 12 is provided with a second docking slot 21 for inserting the second docking post 20. When the platform frame 13 is lifted by the hydraulic cylinder 17, the second docking post 20 is inserted into the second docking slot 21 for docking.

[0031] Specifically, during installation, the mobile conveyor platform is raised by hydraulic cylinders 17 on the load-bearing tractor 16, allowing the second docking post 20 to insert into the second docking slot 21. This ensures precise docking between the platform frame 13 and the second support frame 12, and the connection is secured using connectors to ensure stable operation. Similarly, during disassembly, hydraulic cylinders 17 support the bottom of the platform frame 13, causing it to slowly descend. The first docking post 18 is then inserted into the first docking slot 19, precisely docking the platform frame 13 with the load-bearing tractor 16. After connection using connectors, the platform frame 13 is moved by the load-bearing tractor 16. This makes the mobile conveyor platform more flexible to use.

[0032] The application method of the mobile auxiliary construction device for cast-in-place steel-concrete composite beam bridge deck includes the following application steps: Step 1: Construct the mobile auxiliary construction frame 3 and the fixed frame structure. Move the mobile conveyor platform to the location of the fixed frame structure for installation. Then, it can be moved according to the construction position of the mobile conveyor platform to connect with the horizontal conveyor belt 4. Step 2: Move the mobile auxiliary construction frame 3 so that the horizontal conveyor belt 4 is above the fixed frame structure of the mobile conveyor platform to be installed. At the same time, the horizontal conveyor belt 4 is above the bridge pier 1 where the fixed frame structure is located. In order to connect the horizontal conveyor belt 4 with the mobile conveyor platform, both of them are supported at the position of the bridge pier 1 to avoid affecting the stress on the steel box girder formwork 2 when loading and unloading materials. Step 3: After the mobile conveying platform is fixed to the fixed frame structure, the mobile conveying platform is used to convey the pre-loaded material of the cast-in-place bridge deck formwork onto the horizontal conveyor belt 4 to improve the material conveying efficiency. Step 4: The walking platform 5 is used to allow people to walk and unload the loading material on the horizontal conveyor belt 4, so as to evenly load it onto the steel box girder formwork 2 for pre-stressing of the cast-in-place bridge deck formwork. Step 5: After pre-stressing the formwork, unload the loaded material. The loaded material on the steel box girder formwork 2 is transported to the mobile conveyor platform via the horizontal conveyor belt 4. The material is unloaded downwards using the mobile conveyor platform. Then, the mobile conveyor platform is removed, and the material is unloaded by sliding freely through the inclined hopper 15. The staggered distribution of the inclined conveyor belt 14, the inclined hopper 15, and the horizontal conveyor belt 4 can greatly coordinate the spatial layout of loading and unloading, thereby improving work efficiency. In addition, the inclined hopper 15 does not use energy, making it more energy-efficient and convenient. Step 6: The concrete poured on the steel box girder formwork 2 is vibrated and smoothed by the concrete pouring and vibration mechanism. This allows the mobile auxiliary construction frame 3 to not only assist in the transportation of loading materials, but also to vibrate and smooth the concrete poured on the steel box girder formwork 2 in conjunction with the concrete pouring and vibration mechanism, thereby improving construction efficiency.

[0033] In summary, this auxiliary device can transport the pre-stressed material of the cast-in-place bridge deck formwork upwards via a mobile conveyor platform and a horizontal conveyor belt. The two are connected at the bridge piers to achieve continuous transport, ensuring that the bridge body is under balanced and stable stress during the transport process. The mobile auxiliary construction frame is then moved to pre-stress the steel box girder formwork of the cast-in-place bridge deck, improving work efficiency. The mobile conveyor platform also makes material transport more labor-saving and improves construction efficiency. In addition, the concrete pouring and vibration mechanism assists in vibrating and leveling the concrete of the cast-in-place bridge deck, effectively assisting in the construction of the cast-in-place bridge deck of the steel-concrete composite beam.

[0034] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A mobile auxiliary construction device for cast-in-place steel-concrete composite beam bridge deck, comprising bridge piers (1) and steel box girder formwork (2) on top of them, characterized in that, A mobile auxiliary construction frame (3) is erected above the steel box girder template (2). A horizontal conveyor belt (4) and walking platforms (5) located on both sides of the horizontal conveyor belt (4) are installed on the mobile auxiliary construction frame (3). A concrete pouring and vibration mechanism is hung below the mobile auxiliary construction frame (3). The steel box girder template (2) is provided with a moving track mechanism on both sides to support the movement of the mobile auxiliary construction frame (3) so that the mobile auxiliary construction frame (3) can move along the extension direction of the steel box girder template (2); The bridge pier (1) is provided with a fixed frame structure on both sides and a mobile conveying platform fixed on the fixed frame structure. When the mobile conveying platform is fixed on the fixed frame structure, it connects with the horizontal conveyor belt (4) that moves with the mobile auxiliary construction frame (3) to the top of the bridge pier (1) to convey materials to the horizontal conveyor belt (4).

2. The mobile auxiliary construction device for cast-in-place steel-concrete composite beam bridge deck according to claim 1, characterized in that, The walking platform (5) is arranged parallel to the horizontal conveyor belt (4), and both ends of the walking platform (5) and the horizontal conveyor belt (4) extend out of the outside of the mobile auxiliary construction frame (3) to connect with the mobile conveyor platform.

3. The mobile auxiliary construction device for cast-in-place steel-concrete composite beam bridge deck according to claim 1, characterized in that, The concrete pouring and vibration mechanism includes a support hanger (6) connected to the bottom of the mobile auxiliary construction frame (3) and a lifting plate (7) that can be raised and lowered connected to the bottom of the support hanger (6). Multiple concrete vibrators (8) are continuously fixed on the lifting plate (7) along its lateral extension direction.

4. The mobile auxiliary construction device for cast-in-place bridge deck of steel-concrete composite beam according to claim 3, characterized in that, The mobile auxiliary construction frame (3) is equipped with an electric hoist (9) on top to control the lifting plate (7) to move up and down.

5. The mobile auxiliary construction device for cast-in-place bridge deck of steel-concrete composite beam according to claim 1, characterized in that, The mobile track mechanism includes a first support frame (10) fixedly connected to both sides of the steel box girder template (2), and a mobile track (11) is provided on the first support frame (10) to support and drive the mobile auxiliary construction frame (3) to move.

6. The mobile auxiliary construction device for cast-in-place steel-concrete composite beam bridge deck according to claim 1, characterized in that, The fixed frame structure includes a second support frame (12) fixedly connected to both sides of the bridge pier (1), and the second support frames (12) on both sides of the bridge pier (1) are connected by anchor rods.

7. The mobile auxiliary construction device for cast-in-place bridge deck of steel-concrete composite beam according to claim 6, characterized in that, The mobile conveying platform includes an upper conveying platform and a lower mobile carrier vehicle, the lower mobile carrier vehicle being used to move the upper conveying platform.

8. The mobile auxiliary construction device for cast-in-place bridge deck of steel-concrete composite beam according to claim 7, characterized in that, The upper conveying platform includes a platform frame (13), on which an inclined conveyor belt (14) and an inclined hopper (15) are inclinedly arranged on the side away from the second support frame (12), and the inclined hopper (15) is located below the inclined conveyor belt (14).

9. The mobile auxiliary construction device for cast-in-place bridge deck of steel-concrete composite beam according to claim 8, characterized in that, The lower mobile carrier includes a load carrier (16), and the load carrier (16) is equipped with a hydraulic cylinder (17) for lifting the platform frame (13). The platform frame (13) is vertically connected to a first docking post (18) at the bottom, and the heavy-duty carrier (16) is provided with a first docking slot (19) into which the first docking post (18) is inserted. A second docking post (20) is fixedly connected to the side of the platform frame (13) facing the second support frame (12). The bottom of the second support frame (12) is provided with a second docking slot (21) into which the second docking post (20) is inserted. When the platform frame (13) is lifted by the hydraulic cylinder (17), the second docking post (20) is inserted into the second docking slot (21) for docking.

10. The application method of the mobile auxiliary construction device for cast-in-place steel-concrete composite beam bridge deck according to any one of claims 1-9, characterized in that, The following application steps are included: Step 1: Construct a mobile auxiliary construction frame (3) and a fixed frame structure, and move the mobile conveying platform to the location of the fixed frame structure for installation; Step 2: Move the mobile auxiliary construction frame (3) so that the horizontal conveyor belt (4) is above the fixed frame structure of the mobile conveyor platform to be installed, and at the same time, the horizontal conveyor belt (4) is above the bridge pier (1) where the fixed frame structure is located. Step 3: After the mobile conveying platform is fixed to the fixed frame structure, the loading material for preloading the cast-in-place bridge deck formwork is conveyed to the horizontal conveyor belt (4) using the mobile conveying platform. Step 4: Use the walking platform (5) to allow people to walk and unload the loading material on the horizontal conveyor belt (4) so ​​that it can be evenly loaded onto the steel box girder formwork (2) for pre-stressing of the cast-in-place bridge deck formwork. Step 5: After pre-stressing the formwork, unload the loaded material. Transport the loaded material on the steel box girder formwork (2) to the mobile conveyor platform via the horizontal conveyor belt (4). Unload the material downward using the mobile conveyor platform, and then remove the mobile conveyor platform. Step 6: Vibrate and smooth the concrete poured on the steel box girder formwork (2) using a concrete pouring vibration and compaction mechanism.

Images