CN118596339A - Prefabrication construction method of concrete box beam - Google Patents

Abstract

The application relates to a precast construction method of a concrete box girder, which relates to the technical field of precast concrete box girders and comprises the following steps: s1, processing and binding a reinforcement cage; s2, spraying a release agent on the surface of the box girder prefabricated template; s3, hoisting the reinforcement cage into the box girder prefabricated template, and installing end dies and inner dies at two ends of the box girder prefabricated template; s4, pouring concrete to the top of the box girder prefabricated template to form a bottom plate, a web plate and a top plate of the box girder preliminarily; s5, automatically vibrating and strickling the top plate, and polishing along the length direction and the width direction of the box girder; s6, after the box Liang Chuning is formed, sprinkling water and curing the surface of the box girder; s7, pre-tensioning the box girder; s8, removing the end die and the inner die, and hoisting the box girder to the outer side of the box girder prefabricated die plate; and S9, curing the inner side and the outer side of the box girder, and finally tensioning. The application has the effects of improving the construction efficiency of constructors on the surface of the box girder top plate, such as trowelling, polishing and the like, and reducing the labor intensity of constructors.

Description

Prefabrication construction method of concrete box beam

Technical Field

The present application relates to the field of prefabricated concrete box girder technology, and in particular to a prefabricated construction method for concrete box girders.

Background Art

Concrete precast box girders are prefabricated components that are commonly used in bridges, tunnels and other engineering projects. Precast box girders usually have a rectangular or box-shaped section. This shape provides a large cross-sectional area, which helps to bear the load of the bridge or other structure. The box girder contains cavities and holes inside to reduce its own weight and provide a better strength-to-weight ratio. It also helps to guide cables, pipes, etc. through the box girder.

At present, the prefabrication of box girders usually includes casting the bottom plate, web plate, top plate in the mold, box girder solidification and maintenance work, demolding and trimming the edges, and polishing. After the top plate of the box girder is cast, the top plate needs to be finished. However, the finishing work of the box girder top plate is usually done by manual hand-held grinders, scrapers, etc., especially for the finishing of the top plate of large box girders. Manual finishing is not only labor-intensive and inefficient, but also requires construction personnel to perform operations such as finishing footprints when polishing with a grinder before the initial setting of the top plate concrete, which is cumbersome.

Summary of the invention

In order to improve the construction efficiency of construction workers in smoothing and polishing the top plate of the box beam and reduce the labor intensity of construction workers, this application provides a prefabricated construction method for concrete box beams.

The prefabrication construction method of the concrete box beam provided in the present application adopts the following technical scheme: comprising the following steps:

S1. Processing and binding of steel cage;

S2. Spray release agent on the surface of box beam prefabricated formwork;

S3, hoisting the steel cage into the box girder precast formwork, installing end forms at both ends of the box girder precast formwork and installing inner forms in the box girder precast formwork;

S4, pouring concrete on the top of the box girder precast formwork until the bottom plate, web plate and top plate of the box girder are initially formed;

S5. Automatically vibrate and level the top plate, and polish it along the length and width of the box beam;

S6. After the box girder has initially set, water the surface of the box girder for maintenance;

S7. Pre-tension the box beam to increase the bending strength of the box beam and reduce cracks;

S8, dismantle the end formwork and the inner formwork, and lift the box girder to the outside of the box girder precast formwork;

S9. Carry out maintenance work on the inside and outside of the box girder and carry out final tensioning.

By adopting the above-mentioned technical scheme, in this application, when concrete is poured on the top of the box girder precast formwork until the bottom plate, web and top plate of the box girder are initially formed, the top plate of the box girder will be finished fully automatically, and there is no need to use manual hand-held grinders, scrapers, etc. to finish the top plate, which improves the construction efficiency of construction personnel in finishing work such as leveling and polishing the top plate of the box girder, reduces the labor intensity of construction personnel, and at the same time, construction personnel do not need to perform operations such as finishing footprints, thereby simplifying the operating steps.

Optionally, in S5, a scraping and polishing mechanism is used to scrape and polish the top plate of the box beam, and the scraping and polishing mechanism is arranged on the top of the box beam prefabricated template;

The scraping and polishing mechanism includes a support frame rotatably connected to the top of the box beam prefabricated template, a position adjustment plate slidably connected to the support frame along the length direction of the box beam, a support plate arranged at intervals below the position adjustment plate, a scraper fixedly arranged below the support plate, a polisher arranged on one side of the support plate, a rotating component arranged between the support frame and the box beam prefabricated template for driving the support frame to rotate, a longitudinal moving component arranged between the support frame and the position adjustment plate for driving the position adjustment plate to move along the length direction of the box beam, a transverse moving clamping component arranged between the support plate and the polisher for driving the polisher to move along the width direction of the box beam and clamping and fixing the polisher at the same time, and a spacing adjusting component arranged between the position adjustment plate and the support plate for adjusting the spacing between the support plate and the top plate of the box beam.

By adopting the above technical scheme, when the concrete of the box girder top plate is scraped and polished by the scraping and polishing mechanism, the construction personnel first drive the support frame to rotate through the rotating component to make the support frame rotate to be parallel to the top of the box girder top plate, and then adjust the distance between the support plate and the box girder top plate through the spacing adjustment component, so that the working surfaces of the scraper and the polisher are in contact with the upper surface of the box girder top plate, and then drive the scraper and the polisher to move forward a certain distance along the length direction of the box girder through the longitudinal moving component, so as to scrape and polish the upper surface of the box girder top plate of this section, and then start the transverse moving clamping component, which will drive the polisher to move in the horizontal direction, so that the polisher polishes the upper surface of the box girder top plate. , then the longitudinal moving component continues to drive the scraper and the grinder to move forward a certain distance along the length direction of the box beam, and repeats the above process to complete the scraping and polishing of the box beam top plate; the support frame, scraper and grinder adopt an integrated structure, and the rotating component can drive the support frame, scraper and grinder to rotate quickly to one side of the box beam, so that when the construction personnel demould the box beam, the box beam is not easy to interfere with the support frame; the longitudinal moving component, the transverse moving clamping component and the spacing adjustment component cooperate with each other to complete the precise adjustment of the working position of the grinder along the width direction of the box beam and then the length direction, thereby improving the quality and efficiency of the construction on the top of the box beam top plate and the accuracy of the overall height of the box beam.

Optionally, the rotating assembly includes a worm gear fixedly mounted on one end of a rotating shaft of a support frame, a worm rotatably connected to the support frame, a gearbox arranged on one side of the worm, and a drive motor arranged between the drive motor and the gearbox.

By adopting the above technical solution, when the support frame is driven to rotate by the rotating component, the driving motor first drives the worm to rotate through the gearbox, the worm drives the worm wheel to rotate, and the worm wheel can drive the support frame to rotate; the worm wheel and worm are self-locking, which can make the support frame stably fixed to a certain rotation angle for a long time.

Optionally, the longitudinal moving assembly includes two winding rollers that are rotatably connected to the support frame on both sides along the length direction of the box beam, a brake motor arranged at one end of the winding roller, and a plurality of pull ropes wound around the winding roller; the end of the pull rope away from the winding roller is fixedly connected to the position adjustment plate.

By adopting the above technical scheme, when the position adjustment plate is driven to move along the length direction of the box girder by the longitudinal moving component, the construction personnel first start the brake motor on one side of the position adjustment plate, and at the same time start the brake motor on the other side of the position adjustment plate to operate in the same direction, so that one of the brake motors drives the winding roller to rotate, the winding roller drives the pull rope to wind, the pull rope drives the position adjustment plate to move, and the other brake motor drives the pull rope to release the wire synchronously; the two winding rollers cooperate with the pull rope to drive the position adjustment plate to move and adjust the position on the one hand, and on the other hand, the position adjustment plate can also drive the scraper and the grinder to quickly reset, and at the same time, the brake motor has a certain self-locking property, which can lock the position of the position adjustment plate.

Optionally, the transverse moving clamping assembly includes a transverse moving screw rotatably connected to a support plate, a transverse slider threadedly connected to the transverse moving screw, a clamping component arranged on one side of the transverse slider for clamping and fixing the grinder, and a power motor arranged at one end of the transverse moving screw; one side of the transverse slider abuts against the support plate.

By adopting the above technical scheme, when the grinder is driven to move along the width direction of the box beam through the transverse moving clamping assembly, the construction personnel first start the power motor, and then the power motor drives the transverse moving screw to rotate, and the transverse moving screw drives the transverse slider and the clamping component to move, and the clamping component can drive the grinder to move along the width direction of the box beam and perform polishing on the upper surface of the box beam top plate; wherein the clamping component can, on the one hand, fix the handle of the grinder, so that the construction personnel can inspect, maintain or replace the grinder, and on the other hand, it can also adjust the position of the bottom working surface of the grinder up and down to improve the polishing effect of the grinder.

Optionally, the clamping component includes two clamping seats symmetrically fixed on one side of the transverse slider, a connecting bolt arranged between the two clamping seats, and a connecting nut threadedly connected to the connecting bolt;

A clamping groove is provided on one side of the clamping seats which are close to each other, and the handle of the polishing machine is closely attached to the inner side wall of the clamping groove.

By adopting the above technical solution, when fixing the grinder through the clamping component, the construction personnel first insert the handle of the grinder into the clamping groove, then pass the connecting bolt through the two clamping seats and tighten the connecting nut to complete the fixation of the grinder.

Optionally, the spacing adjustment assembly includes a plurality of adjustment screws threadedly connected to the position adjustment plate, a lifting motor arranged at one end of the adjustment screw, two guide seats respectively arranged on both sides of the lifting motor, and a guide block fixed on the lifting motor housing;

The guide seat is provided with a guide groove along its height direction, the guide block is located in the guide groove and slides up and down, and one end of the adjusting screw is rotatably connected to the support plate.

By adopting the above technical scheme, the distance between the support plate and the box girder top plate is adjusted by the distance adjusting component, so that the working surfaces of the scraper and the grinder are in contact with the upper surface of the box girder top plate. First, the construction personnel start the lifting motor, and then the lifting motor drives the adjusting screw to rotate, and the adjusting screw drives the support plate to move, so that the working surfaces of the scraper and the grinder are in contact with the upper surface of the box girder top plate; wherein the lifting motor can move with the up and down lifting of the support plate, and at the same time, the setting of the guide block and the guide groove can limit the rotation of the lifting motor, thereby ensuring the stable power output of the output shaft of the lifting motor.

Optionally, the scraper is inclined toward a side close to the grinder.

By adopting the above technical solution, the scraper is inclined so that when the scraper moves, concrete is not easily stuck after being accumulated in front of the scraper.

Optionally, in S5, a walking vibration mechanism is used to vibrate the top plate of the box beam, and the walking vibration mechanism is arranged on the top of the box beam precast formwork;

The walking and vibrating mechanism includes two guide rails fixedly arranged above the box beam prefabricated template along the length direction of the box beam, a moving block slidably connected above the guide rails, a vibration frame fixedly arranged between the two moving blocks, a plurality of vibration motors arranged on the vibration frame, a walking wheel rotatably connected to the moving block, and a hub motor arranged on one side of the walking wheel.

By adopting the above technical solution, when the box girder top plate is vibrated by the walking vibration mechanism, the vibration motor is started first, and then the hub motor drives the walking wheel to move along the length direction of the guide rail, and the walking wheel drives the moving block and the vibration frame to move, thereby vibrating the top of the box girder.

In summary, the present application includes at least one of the following beneficial technical effects:

1. In this application, when concrete is poured on the top of the box beam precast formwork until the bottom plate, web plate and top plate of the box beam are initially formed, the top plate of the box beam will be automatically finished, without the need to use manual hand-held grinders, scrapers, etc. to finish the top plate, thereby improving the construction efficiency of the construction personnel in finishing the top plate of the box beam, such as smoothing and polishing, and reducing the labor intensity of the construction personnel. At the same time, the construction personnel do not need to perform operations such as finishing footprints, simplifying the operation steps;

2. The support frame, scraper and grinder in the scraping and polishing mechanism adopt an integrated structure, and the rotating assembly can drive the support frame, scraper and grinder to quickly rotate to one side of the box beam, so that when the construction personnel demould the box beam, the box beam is not easy to interfere with the support frame; the longitudinal moving assembly, the transverse moving clamping assembly and the spacing adjustment assembly cooperate with each other to complete the precise adjustment of the working position of the grinder along the width direction of the box beam and then the length direction, thereby improving the quality and efficiency of the construction of the top plate of the box beam and the accuracy of the overall height of the box beam;

3. The two winding rollers in the longitudinal moving assembly cooperate with the pull rope to drive the position adjustment plate to move and adjust the position. On the other hand, the position adjustment plate can also drive the scraper and the grinder to quickly reset. At the same time, the brake motor has a certain self-locking property, which can lock the position of the position adjustment plate;

4. The clamping parts in the horizontally movable clamping assembly can fix the handle of the grinder on one hand, making it convenient for construction personnel to inspect, maintain or replace the grinder, and on the other hand, they can also adjust the position of the bottom working surface of the grinder up and down to improve the polishing effect of the grinder;

5. The lifting motor in the spacing adjustment assembly can move along with the up and down movement of the support plate. At the same time, the setting of the guide block and the guide groove can limit the rotation of the lifting motor to ensure stable power output of the output shaft of the lifting motor.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a structural schematic diagram of a concrete box girder prefabrication construction method according to an embodiment of the present application;

FIG2 is a schematic diagram showing the structure of a walking vibrating mechanism and a scraping and polishing mechanism;

FIG3 is a schematic diagram showing a partial structure of a scraping and polishing mechanism;

FIG4 is a schematic diagram showing a partial structure of a walking vibrating mechanism;

FIG. 5 is a schematic diagram showing a partial enlarged structure of portion A in FIG. 4 .

Description of the accompanying drawings: 1. box beam prefabricated template; 2. walking and vibrating mechanism; 21. guide rail; 22. moving block; 23. vibration frame; 24. vibration motor; 25. walking wheel; 26. hub motor; 3. scraping and polishing mechanism; 31. support frame; 311. slideway; 32. position adjustment plate; 33. support plate; 34. scraper; 35. polisher; 36. rotating assembly; 361. worm gear; 362. worm; 363. gearbox; 364. drive motor machine; 37, longitudinal moving assembly; 371, winding roller; 372, brake motor; 373, pull rope; 38, transverse moving clamping assembly; 381, transverse moving screw; 382, power motor; 383, transverse slider; 384, clamping component; 3841, clamping seat; 3842, connecting bolt; 39, spacing adjustment assembly; 391, adjusting screw; 392, lifting motor; 393, guide seat; 3931, guide groove; 394, guide block.

DETAILED DESCRIPTION

The present application is further described in detail below in conjunction with Figures 1 to 5.

The present application discloses a prefabrication construction method for a concrete box beam. Referring to FIG1 , the prefabrication construction method for a concrete box beam includes the following steps:

S1. Processing and binding of steel cage;

S2, spraying release agent on the surface of box beam prefabricated formwork 1;

S3, hoisting the steel cage into the box girder precast formwork 1, and installing end forms at both ends of the box girder precast formwork 1 and installing an inner formwork inside the box girder precast formwork 1;

S4, pouring concrete on the top of the box girder precast formwork 1 until the bottom plate, web plate and top plate of the box girder are initially formed;

S5, the top plate is automatically vibrated and leveled, and polished along the length and width of the box beam; the top plate of the box beam is vibrated by a walking vibrating mechanism 2, which is also arranged on the top of the box beam prefabricated formwork 1. The top plate of the box beam is leveled and polished by a leveling and polishing mechanism 3, which is arranged on the top of the box beam prefabricated formwork 1.

S6. After the box girder has initially set, water the surface of the box girder for maintenance;

S7. Pre-tension the box beam to increase the bending strength of the box beam and reduce cracks;

S8, dismantle the end formwork and the inner formwork, and lift the box girder to the outside of the box girder prefabricated formwork 1;

S9. Carry out maintenance work on the inside and outside of the box girder and carry out final tensioning.

2 and 3, the scraping and polishing mechanism 3 includes a support frame 31 rotatably connected to the top of the box beam prefabricated template 1, a position adjustment plate 32 is slidably connected to the support frame 31 along the length direction of the box beam, slideways 311 are fixedly provided on both sides of the support frame 31 along the length direction of the box beam, and a slide groove is provided on the position adjustment plate 32, and the slideway 311 slides in the slide groove. A support plate 33 is arranged parallel and spaced below the position adjustment plate 32, and a scraper 34 is fixedly provided below the support plate 33. The scraper 34 is tilted toward the side close to the polisher 35. The scraper 34 is tilted to prevent the scraper 34 from getting stuck when concrete accumulates in front of the scraper 34 during its movement. A polisher 35 is also provided on one side of the support plate 33.

3 and 4, a rotating assembly 36 is provided between the support frame 31 and the box beam prefabricated template 1, and the rotating assembly 36 is used to drive the support frame 31 to rotate. A longitudinal moving assembly 37 is provided between the support frame 31 and the position adjustment plate 32, and the longitudinal moving assembly 37 is used to drive the position adjustment plate 32 to move along the length direction of the box beam. A transverse moving clamping assembly 38 is provided between the support plate 33 and the polishing machine 35, and the transverse moving clamping assembly 38 is used to drive the polishing machine 35 to move along the width direction of the box beam, and clamp and fix the polishing machine 35 at the same time. A spacing adjustment assembly 39 is provided between the position adjustment plate 32 and the support plate 33, and the spacing adjustment assembly 39 is used to adjust the spacing between the support plate 33 and the top plate of the box beam.

When the box girder top plate concrete is scraped and polished by the scraping and polishing mechanism 3, the construction personnel first drive the support frame 31 to rotate by the rotating component 36, so that the support frame 31 rotates to be parallel to the top of the box girder top plate, and then adjusts the distance between the support plate 33 and the box girder top plate by the spacing adjustment component 39, so that the working surfaces of the scraper 34 and the polisher 35 abut against the upper surface of the box girder top plate, and then drive the scraper 34 and the polisher 35 to move forward a certain distance along the length direction of the box girder by the longitudinal movement component 37, so as to scrape and polish the upper surface of this section of the box girder top plate, and then start the transverse movement clamping component 38, which will drive the polisher 35 to move in the horizontal direction, so that the polisher 35 polishes the upper surface of the box girder top plate, and then the longitudinal movement component 37 continues to drive the scraper 34 and the polisher 35 to move forward a certain distance along the length direction of the box girder, and repeat the above process to complete the scraping and polishing of the box girder top plate.

2 and 3, the rotating assembly 36 includes a worm wheel 361 fixedly sleeved to one end of the rotating shaft of the support frame 31, a worm 362 is rotatably connected to the support frame 31, a gearbox 363 is provided on one side of the worm 362, and a driving motor 364 is provided between the driving motor 364 and the gearbox 363. When the rotating assembly 36 drives the support frame 31 to rotate, first the driving motor 364 drives the worm 362 to rotate through the gearbox 363, the worm 362 drives the worm wheel 361 to rotate, and the worm wheel 361 can drive the support frame 31 to rotate.

3 and 4, the longitudinal moving assembly 37 includes two winding rollers 371 respectively connected to the support frame 31 on both sides along the length direction of the box beam, and a brake motor 372 is provided at one end of the winding roller 371. A plurality of pull ropes 373 are wound around the winding roller 371, and one end of the pull rope 373 away from the winding roller 371 is fixedly connected to the position adjustment plate 32.

When the position adjustment plate 32 is driven to move along the length direction of the box girder by the longitudinal moving component 37, the construction personnel first start the brake motor 372 on one side of the position adjustment plate 32, and at the same time start the brake motor 372 on the other side of the position adjustment plate 32 to operate in the same direction, so that one of the brake motors 372 drives the winding roller 371 to rotate, the winding roller 371 drives the pull rope 373 to wind, the pull rope 373 drives the position adjustment plate 32 to move, and the other brake motor 372 drives the pull rope 373 to release the wire synchronously, so that the two winding rollers 371 cooperate with the pull rope 373 to drive the position adjustment plate 32 to move and adjust the position, and the position adjustment plate 32 can also drive the scraper 34 and the grinder 35 to quickly reset.

4 and 5 , the transverse moving clamping assembly 38 includes a transverse moving screw 381 rotatably connected to the support plate 33, and a power motor 382 is provided at one end of the transverse moving screw 381. A transverse slider 383 is threadedly connected to the transverse moving screw 381, and one side of the transverse slider 383 abuts against the support plate 33. A clamping component 384 is provided on one side of the transverse slider 383, and the clamping component 384 is used to clamp and fix the polishing machine 35.

4 and 5, the clamping member 384 includes two clamping seats 3841 symmetrically fixed on one side of the horizontal slider 383, and a clamping groove is formed on one side of the clamping seats 3841 close to each other, and the handle of the grinder 35 is close to the inner wall of the clamping groove. A connecting bolt 3842 is provided between the two clamping seats 3841, and a connecting nut is threadedly connected to the connecting bolt 3842.

When the grinder 35 is driven to move along the width direction of the box beam by the transverse moving clamping assembly 38, the construction personnel first start the power motor 382, then the power motor 382 drives the transverse moving screw 381 to rotate, the transverse moving screw 381 drives the transverse slider 383 and the clamping seat 3841 to move, and the clamping seat 3841 can drive the grinder 35 to move along the width direction of the box beam and perform polishing on the upper surface of the box beam top plate. When the construction personnel fix the grinder 35 through the clamping component 384, the construction personnel first insert the handle of the grinder 35 into the clamping groove, then make the connecting bolt 3842 pass through the two clamping seats 3841 and tighten the connecting nut to complete the fixation of the grinder 35.

4 and 5, the spacing adjustment assembly 39 includes a plurality of adjustment screws 391 threadedly connected to the position adjustment plate 32, the adjustment screws 391 are arranged along the vertical position adjustment plate 32, and one end of the adjustment screws 391 is rotatably connected to the support plate 33. A lifting motor 392 is arranged at one end of the adjustment screw 391, and guide seats 393 are arranged on both sides of the lifting motor 392. A guide block 394 is fixed on the outer shell of the lifting motor 392, and a guide groove 3931 is opened along the height direction of the guide seat 393. The guide block 394 is located in the guide groove 3931 and slides up and down, wherein the setting of the guide block 394 and the guide groove 3931 can limit the rotation of the lifting motor 392, and ensure the stable power output of the output shaft of the lifting motor 392.

When adjusting the distance between the support plate 33 and the box girder top plate through the distance adjustment component 39 so that the working surfaces of the scraper 34 and the grinder 35 abut against the upper surface of the box girder top plate, the construction personnel first start the lifting motor 392, and then the lifting motor 392 drives the adjusting screw 391 to rotate, and the adjusting screw 391 drives the support plate 33 to move so that the working surfaces of the scraper 34 and the grinder 35 abut against the upper surface of the box girder top plate.

4 , the walking and vibrating mechanism 2 includes two guide rails 21 fixedly arranged above the box beam prefabricated template 1 along the length direction of the box beam, and a moving block 22 is slidably connected above the guide rails 21. A vibration frame 23 is fixedly arranged between the two moving blocks 22, and a plurality of vibration motors 24 are arranged on the vibration frame 23. A walking wheel 25 is rotatably connected to the moving block 22, and a hub motor 26 is arranged on one side of the walking wheel 25.

When the box girder top plate is vibrated by the traveling vibration mechanism 2, the vibration motor 24 is started first, and then the hub motor 26 drives the traveling wheel 25 to move along the length direction of the guide rail 21, and the traveling wheel 25 drives the moving block 22 and the vibration frame 23 to move, thereby vibrating the top of the box girder.

The implementation principle of a prefabricated construction method for a concrete box girder in an embodiment of the present application is as follows: when concrete is poured on the top of the box girder prefabricated formwork 1 until the bottom plate, web and top plate of the box girder are initially formed, the top plate of the box girder will be automatically finished by means of a scraping and polishing mechanism 3 and a walking and vibrating mechanism 2. There is no need to use a manual hand-held polishing machine 35, a scraper, etc. to finish the top plate, thereby improving the construction efficiency of construction personnel in finishing work such as leveling and polishing the top plate of the box girder. At the same time, the construction personnel do not need to perform operations such as finishing footprints, thereby simplifying the operating steps. When the box beam top plate concrete is scraped and polished by the scraping and polishing mechanism 3, the construction personnel first drive the support frame 31 to rotate by the rotating assembly 36, so that the support frame 31 rotates to be parallel to the top of the box beam top plate, and then adjusts the distance between the support plate 33 and the box beam top plate by the spacing adjustment assembly 39, so that the working surface of the scraper 34 and the polisher 35 abuts against the upper surface of the box beam top plate, and then drives the scraper 34 and the polisher 35 to move forward a certain distance along the length direction of the box beam by the longitudinal moving assembly 37, so as to smooth the box beam top plate. The upper surface of the beam top plate is scraped and leveled, and then the transverse moving clamping assembly 38 is started. The transverse moving clamping assembly 38 will drive the grinder 35 to move in the horizontal direction, so that the grinder 35 grinds the upper surface of the box beam top plate. The longitudinal moving assembly 37, the transverse moving clamping assembly 38, and the spacing adjustment assembly 39 cooperate with each other to complete the precise adjustment of the working position of the grinder 35 along the width direction and then the length direction of the box beam, thereby improving the quality and efficiency of the construction of the top of the box beam top plate and the accuracy of the overall height of the box beam.

The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims (9)

1. A prefabrication construction method for a concrete box beam, characterized in that it comprises the following steps: S1. Processing and binding of steel cage; S2, spraying a release agent on the surface of the box beam prefabricated formwork (1); S3, hoisting the steel cage into the box girder precast formwork (1), installing end forms at both ends of the box girder precast formwork (1) and installing an inner formwork inside the box girder precast formwork (1); S4, pouring concrete on the top of the box girder precast formwork (1) until the bottom plate, web plate and top plate of the box girder are initially formed; S5. Automatically vibrate and level the top plate, and polish it along the length and width of the box beam; S6. After the box girder has initially set, water the surface of the box girder for maintenance; S7. Pre-tension the box beam to increase the bending strength of the box beam and reduce cracks; S8, dismantling the end formwork and the inner formwork, and hoisting the box girder to the outside of the box girder precast formwork (1); S9. Carry out maintenance work on the inside and outside of the box girder and carry out final tensioning. 2. The prefabrication construction method of a concrete box girder according to claim 1 is characterized in that: in S5, a scraping and polishing mechanism (3) is used to scrape and polish the top plate of the box girder, and the scraping and polishing mechanism (3) is arranged on the top of the box girder prefabricated template (1); The scraping and polishing mechanism (3) comprises a support frame (31) rotatably connected to the top of the box beam prefabricated template (1), a position adjustment plate (32) slidably connected to the support frame (31) along the length direction of the box beam, a support plate (33) arranged at intervals below the position adjustment plate (32), a scraper (34) fixedly arranged below the support plate (33), a polishing machine (35) arranged on one side of the support plate (33), a rotating assembly (36) arranged between the support frame (31) and the box beam prefabricated template (1) for driving the support frame (31) to rotate, and a rotating assembly (36) arranged between the support frame (31) and the box beam prefabricated template (1) for driving the support frame (31) to rotate. A longitudinal moving assembly (37) is arranged between the support frame (31) and the position adjustment plate (32) for driving the position adjustment plate (32) to move along the length direction of the box beam, a transverse moving clamping assembly (38) is arranged between the support plate (33) and the polishing machine (35) for driving the polishing machine (35) to move along the width direction of the box beam and clamping and fixing the polishing machine (35), and a spacing adjustment assembly (39) is arranged between the position adjustment plate (32) and the support plate (33) for adjusting the spacing between the support plate (33) and the top plate of the box beam. 3. The prefabricated construction method of a concrete box beam according to claim 2 is characterized in that: the rotating assembly (36) includes a worm gear (361) fixedly mounted on one end of a rotating shaft of a support frame (31), a worm (362) rotatably connected to the support frame (31), a gearbox (363) arranged on one side of the worm (362), and a drive motor (364) arranged between the drive motor (364) and the gearbox (363). 4. The prefabricated construction method of a concrete box girder according to claim 2 is characterized in that: the longitudinal moving component (37) includes two winding rollers (371) respectively rotatably connected to the support frame (31) on both sides along the length direction of the box girder, a brake motor (372) arranged at one end of the winding roller (371), and a plurality of pull ropes (373) wound around the winding roller (371); the end of the pull rope (373) away from the winding roller (371) is fixedly connected to the position adjustment plate (32). 5. The prefabricated construction method of concrete box beam according to claim 2 is characterized in that: the transverse moving clamping assembly (38) includes a transverse moving screw (381) rotatably connected to the support plate (33), a transverse slider (383) threadedly connected to the transverse moving screw (381), a clamping component (384) arranged on one side of the transverse slider (383) for clamping and fixing the polishing machine (35), and a power motor (382) arranged at one end of the transverse moving screw (381); one side of the transverse slider (383) is in contact with the support plate (33). 6. The prefabrication construction method of a concrete box beam according to claim 5, characterized in that: the clamping member (384) comprises two clamping seats (3841) symmetrically fixed on one side of the transverse slider (383), a connecting bolt (3842) arranged between the two clamping seats (3841), and a connecting nut threadedly connected to the connecting bolt (3842); A clamping groove is formed on one side of the clamping seats (3841) close to each other, and the handle of the polishing machine (35) is closely attached to the inner wall of the clamping groove. 7. The prefabrication construction method of a concrete box beam according to claim 2 is characterized in that: the spacing adjustment component (39) comprises a plurality of adjustment screws (391) threadedly connected to the position adjustment plate (32), a lifting motor (392) arranged at one end of the adjustment screws (391), two guide seats (393) respectively arranged on both sides of the lifting motor (392), and a guide block (394) fixed on the housing of the lifting motor (392); The guide seat (393) is provided with a guide groove (3931) along its height direction, the guide block (394) is located in the guide groove (3931) and slides up and down, and one end of the adjusting screw (391) is rotatably connected to the support plate (33). 8. The prefabrication construction method of concrete box beam according to claim 2, characterized in that the scraper (34) is inclined toward the side close to the polishing machine (35). 9. The method for prefabrication of a concrete box girder according to any one of claims 1 to 8, characterized in that: in S5, a walking vibration mechanism (2) is used to vibrate the top plate of the box girder, and the walking vibration mechanism (2) is arranged on the top of the box girder prefabricated template (1); The walking and vibrating mechanism (2) comprises two guide rails (21) fixedly arranged above the box beam prefabricated template (1) along the length direction of the box beam, a moving block (22) slidably connected above the guide rails (21), a vibration frame (23) fixedly arranged between the two moving blocks (22), a plurality of vibration motors (24) arranged on the vibration frame (23), a walking wheel (25) rotatably connected to the moving block (22), and a hub motor (26) arranged on one side of the walking wheel (25).