Prefabricated concrete slab shortcut and construction method

Abstract

The invention provides a prefabricated concrete slab shortcut and a construction method. The construction method mainly comprises the steps of binding a reinforcing mesh shaping jig frame, shaping a steel formwork, pouring concrete in a gantry crane lifting hopper and limiting through long steel cast-in-place curbs arranged in the two sides of a prefabricated slab. The construction efficiency, precision and quality are remarkably improved, and the method is suitable for various constructional engineering.

Description

Technical Field

[0001] The invention relates to the field of construction access roads, in particular to a prefabricated assembled concrete slab access road and a construction method. Background Art

[0002] In construction projects, steel mesh binding, concrete pouring and prefabricated slab construction are key construction links, and their construction quality directly affects the structural safety and service life of the entire project. Traditional steel mesh binding is mostly done manually, which has problems such as low efficiency, poor precision, and high labor intensity; during concrete pouring, the hopper discharge control is not accurate, which can easily lead to concrete waste and substandard construction quality; in prefabricated slab construction, the positioning and fixing of curbs lack effective technical means, which is prone to deviations and affects the overall construction effect.

[0003] In order to solve the above problems, some improvement schemes have been proposed in the prior art, such as using simple tire frames for steel bar binding and using ordinary steel formwork for concrete pouring, etc. However, these schemes still have many shortcomings, such as complex tire frame structure, unstable formwork connection, inaccurate hopper discharge control, etc., which are difficult to meet the high requirements of modern construction projects for construction efficiency, precision and quality.

[0004] Therefore, there is an urgent need for an integrated construction technology that can achieve fast and accurate binding of steel mesh, precise control of concrete pouring, and efficient positioning and fixation of precast panel construction, so as to improve construction efficiency, precision and quality, reduce construction costs, and meet the needs of modern construction projects for prefabricated and assembled concrete slab walkways and construction methods. Summary of the invention

[0005] The object of the present invention is to provide a prefabricated assembled concrete slab walkway and a construction method for solving the above-mentioned technical problems.

[0006] In order to solve the above technical problems, the present invention provides a construction method of a prefabricated assembled concrete slab walkway, comprising the following steps:

[0007] Step 1: Assemble and fix the tire frame: Lay the I-beam base, vertically install the tire frame unit on the I-beam base, install the transverse positioning plate on the top of the tire frame unit, embed the transverse steel bars into the steel bar placement groove of the transverse positioning plate, and then install the longitudinal positioning plate on the side of the tire frame unit, and embed the longitudinal steel bars into the steel bar placement groove of the longitudinal positioning plate;

[0008] Step 2: Installation of the finalized steel formwork: hoist the formwork, fix the longitudinal formwork and the transverse formwork on the formwork positioning plate of the bottom formwork, and then install the concrete pad and the steel mesh;

[0009] Step 3: Automatic concrete pouring and leveling: Start the CNC motor to drive the hopper to move along the gantry crane track. During the pouring process, the scraper plate slides along the scraper plate slide bar through the scraper bar crossbeam to synchronously level the concrete surface;

[0010] Step 4: Curbstone positioning and prefabricated slab forming: embedded steel sections are embedded on both sides of the construction access road, followed by pouring curbstones, constructing the leveling layer, and then hoisting the concrete slab through the reserved holes, with a reserved section of hoisting rope inserted into the reserved holes; cotton and linen are filled into the reserved holes, and finally an asphalt surface layer is laid on the top of the concrete slab;

[0011] Step 5: Concrete slab recovery: Scrape off the asphalt surface layer, clean the cotton and linen in the reserved holes, then connect a lifting rope to lift out the concrete slab and transport it.

[0012] The beneficial effects of the present invention are:

[0013] 1. The present invention adopts a modular design of a fixed tire frame to achieve rapid positioning and binding of the steel mesh, improve construction efficiency and accuracy, reduce labor intensity, and has strong versatility.

[0014] 2. The standardized steel formwork technology involved in the present invention enhances stability, improves construction efficiency, ensures concrete molding quality, and reduces maintenance costs through innovative connection structure.

[0015] 3. The present invention adopts the gantry crane lifting hopper concrete pouring technology, accurately controls the pouring volume, efficiently recovers the surplus material, and improves the construction safety and efficiency.

[0016] 4. The built-in full-length cast-in-place steel curb limiting technology on both sides of the precast panel can accurately position the curb, improve construction efficiency, enhance structural stability and reduce maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall schematic diagram of the concrete pouring of the concrete slab;

[0018] Figure 2 This is a schematic diagram of tying steel bars to a shaped frame;

[0019] Figure 3 It is a schematic diagram of a shaped tire frame;

[0020] Figure 4 is a schematic diagram of a tire frame unit;

[0021] Figure 5 It is a schematic diagram of the concrete slab structure;

[0022] Figure 6 It is a schematic diagram of the concrete slab steel formwork;

[0023] Figure 7 This is a schematic diagram of a gantry crane pouring concrete;

[0024] Figure 8 It is a schematic diagram of the concrete slab construction access road structure.

[0025] Among them: 1. Forming tire frame 2. Horizontal positioning plate 3. Rear groove 4. Longitudinal positioning plate 5. Steel bar placement groove 6. Reinforcement connecting rod 7. Connecting rod 8. Tire frame unit 9. I-beam base 10. Fixed plate 11. Fixed nail 12. Cross support 13. Horizontal steel bar 14. Longitudinal steel bar 15. Formwork reinforcement steel 16. Residual material collection trough 17. PVC pipe positioning rod 18. Scraping plate slide bar 19. Scraping plate crossbeam 20. Bottom mold 21. Scraping plate 22. Longitudinal formwork 23. Formwork lifting ear 24. PVC pipe 25. Formwork positioning plate 26. Horizontal formwork 27. Gantry crane 28. CNC motor 29. Hopper 30. Built-in steel 31. Concrete slab 32. Curbstone 33. Asphalt surface layer 34. Steel fixing nail 35. Leveling layer. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0027] Those skilled in the art should understand that, in the disclosure of the present invention, the orientation or position relationship indicated by the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0028] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0029] like Figure 1-Figure 8 The present invention provides a construction method for a prefabricated assembled concrete slab walkway, comprising the following steps:

[0030] Step 1: Assemble and fix the shaped tire frame 1: lay an I-beam base 9 on the construction site, and fix the I-beam base 9 to the ground through a fixing plate 10 and a fixing nail 11; vertically install the tire frame unit 8 on the I-beam base 9, and connect adjacent tire frame units 8 through reinforcing rods 6 and cross supports 12 to form a mesh-like stable structure; install a transverse positioning plate 2 on the top of the tire frame unit 8, embed the transverse steel bar 13 into the steel bar placement groove 5 of the transverse positioning plate 2, and then install the longitudinal positioning plate 4 on the side of the tire frame unit 8, and embed the longitudinal steel bar 14 into the steel bar placement groove 5 of the longitudinal positioning plate 4.

[0031] Step 2: Installation of the shaped steel formwork: lift the formwork through the formwork lifting lugs 23, fix the longitudinal formwork 22 and the transverse formwork 26 on the formwork positioning plate 25 of the bottom formwork 20; and fix the residual material collecting trough 16 through bolts, and then install the concrete pads and steel mesh.

[0032] Step 3: Automatic concrete pouring and leveling: Start the CNC motor 28 to drive the hopper 29 to move along the track of the gantry crane 27 to accurately control the concrete pouring amount; during the pouring process, the scraper plate 21 slides along the scraper plate slide bar 18 through the scraper bar cross beam 19 to synchronously level the concrete surface; the construction waste is automatically collected through the waste collection trough 16.

[0033] The movement of the scraping rod cross beam 19 can be controlled by an operator pushing both ends thereof.

[0034] Step 4: Curbstone positioning and prefabricated slab forming: embedded steel 30 is embedded on both sides of the construction access road, and the embedded steel 30 is fixed by steel fixing nails 34, then the curbstone 32 is poured, and the leveling layer 35 is constructed. Then the concrete slab is hoisted through the reserved hole, and a section of hoisting rope is reserved and inserted into the reserved hole. Cotton and linen are filled in the reserved hole, and finally the asphalt surface layer 33 is laid on the top surface of the concrete slab 31.

[0035] Step 5: Concrete slab recovery: Scrape off the asphalt surface layer 33, clean the cotton and linen in the reserved hole, and then connect a lifting rope to lift the concrete slab out and transport it.

[0036] The present invention also discloses a prefabricated assembled concrete slab walkway, including steel mesh shaped frame binding, shaped steel formwork, gantry crane lifting hopper concrete pouring, and built-in full-length steel cast-in-place curbstones on both sides of the prefabricated slab. The steel mesh shaped frame binding includes a transverse positioning plate 2, a longitudinal positioning plate 4, a steel bar placement groove 5, a reinforcing connecting rod 6, etc. The shaped steel formwork technology is innovative in connection structure, including template reinforcement steel 15, template positioning plate 25, etc. The built-in full-length steel cast-in-place curbstones on both sides of the prefabricated slab limit technology ensures the precise positioning and fixation of the curbstones 32 through built-in steel 30 and steel fixing nails 34.

[0037] An I-beam base 9 is arranged at the bottom of the shaped tire frame 1, a fixing plate 10 is arranged on the I-beam base 9, and the fixing plate 10 is fixed to the ground by fixing nails 11. A cross support 12 is arranged between adjacent tire frame units 8, a transverse positioning plate 2 is arranged on the top surface of the tire frame unit 8, a steel bar placement groove 5 is arranged on the transverse positioning plate 2, a rear groove 3 is arranged on the inner side of the transverse positioning plate 2, a longitudinal positioning plate 4 is arranged in the rear groove 3, a steel bar placement groove 5 is arranged on the longitudinal positioning plate 4, a transverse steel bar 13 and a longitudinal steel bar 14 are arranged in the steel bar placement groove 5, a connecting rod 7 is arranged on the side of the tire frame unit 8, and a reinforcing connecting rod 6 is arranged on the connecting rod 7 of the two tire frame units 8.

[0038] The shaped steel formwork includes a transverse formwork 26, a longitudinal formwork 22, a formwork reinforcement steel 15, a bottom formwork 20, etc. A formwork positioning plate 25 is provided on the bottom formwork 20 for placing the transverse formwork 26 and the longitudinal formwork 22. The formwork reinforcement steel 15 is provided on the transverse formwork 26 and the longitudinal formwork 22. A residual material collection trough 16 is provided on the formwork reinforcement steel 15 on one side. The two are fixed by bolts, and a steel mesh is provided in the formwork. A PVC pipe positioning rod 17 and a PVC pipe 24 are provided in sequence in the middle of the bottom formwork 20 to form a reserved hole for facilitating lifting in the later stage. A formwork lifting lug 23 is provided on the side of the formwork, an arc groove is provided on the top of the formwork lifting lug 23, a scraping plate slide bar 18 is provided in the arc groove, a scraping rod cross beam 19 is provided on the scraping plate slide bar 18, and a scraping plate 21 is provided under the scraping rod cross beam 19.

[0039] The gantry crane lifting hopper concrete pouring technology includes a gantry crane 27, a numerical control motor 28, and a hopper 29, and the numerical control motor 28 is used to intelligently pour concrete.

[0040] The built-in full-length cast-in-place steel curb limiting technology on both sides of the prefabricated slab includes a curb 32 and a leveling layer 35, a concrete slab 31 is arranged on the leveling layer 35, an asphalt surface layer 33 is arranged on the top surface of the concrete slab 31, a built-in steel 30 is arranged in the curb 32, and a steel fixing nail 34 is arranged at the bottom of the built-in steel 30.

[0041] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that are the same or similar to those of the present application fall within the protection scope of the present invention.

Claims

1. A construction method for a prefabricated concrete slab access road, characterized in that: The following steps are involved: Step 1: Assembling and fixing the shaped tire frame (1): laying an I-beam base (9), vertically installing the tire frame unit (8) on the I-beam base (9), installing a transverse positioning plate (2) on the top of the tire frame unit (8), embedding the transverse steel bars (13) into the steel bar placement groove (5) of the transverse positioning plate (2), and then installing a longitudinal positioning plate (4) on the side of the tire frame unit (8), and embedding the longitudinal steel bars (14) into the steel bar placement groove (5) of the longitudinal positioning plate (4); Step 2: Installation of the shaped steel formwork: hoist the formwork, fix the longitudinal formwork (22) and the transverse formwork (26) on the formwork positioning plate (25) of the bottom formwork (20), and then install the concrete pad and the steel mesh; Step 3: Automatic concrete pouring and leveling: Start the CNC motor (28) to drive the hopper (29) to move along the track of the gantry crane (27). During the pouring process, the scraper plate (21) slides along the scraper plate slide bar (18) through the scraper bar cross beam (19) to synchronously level the concrete surface; Step 4: curbstone positioning and prefabricated slab forming: embedded steel (30) is embedded on both sides of the construction access road, then the curbstone (32) is cast, and the leveling layer (35) is constructed. Then the concrete slab (31) is hoisted through the reserved hole, and a section of hoisting rope is reserved and inserted into the reserved hole; cotton and linen are filled in the reserved hole, and finally an asphalt surface layer (33) is laid on the top surface of the concrete slab (31); Step 5: Concrete slab recovery: Shovel away the asphalt surface layer (33), clean the cotton and linen in the reserved hole, and then connect a lifting rope to lift the concrete slab out and transport it.

2. The construction method of the prefabricated assembled concrete slab walkway according to claim 1 is characterized in that: In step 1, a fixing plate (10) is arranged on the I-beam base (9), the fixing plate (10) is fixed to the ground by fixing nails (11), and is connected to adjacent tire frame units (8) by cross supports (12) to form a network-like stable structure.

3. The construction method of the prefabricated assembled concrete slab walkway according to claim 1 is characterized in that: In step one, a rear groove (3) is arranged inside the transverse positioning plate (2), a longitudinal positioning plate (4) is arranged inside the rear groove (3), a connecting rod (7) is arranged on the side of the tire frame unit (8), and a reinforcing connecting rod (6) is arranged on the connecting rod (7) of two adjacent tire frame units (8).

4. The construction method of the prefabricated assembled concrete slab access road according to claim 1 is characterized in that: In step 2, template reinforcement steel (15) is arranged on the transverse template (26) and the longitudinal template (22), and a residual material collecting trough (16) is arranged on the template reinforcement steel (15) on one side.

5. The construction method of the prefabricated assembled concrete slab access road according to claim 1 is characterized in that: In step 2, a PVC pipe positioning rod (17) and a PVC pipe (24) are sequentially arranged at the middle of the bottom mold (20) for forming a reserved hole later; a template lifting lug (23) is arranged on the side of the bottom mold (20), an arc groove is arranged on the top of the template lifting lug (23), and a scraper plate sliding rod (18) is arranged in the arc groove.

6. The construction method of the prefabricated assembled concrete slab walkway according to claim 1, characterized in that: In step 4, a steel fixing nail (34) is arranged at the bottom of the built-in steel (30).

7. A prefabricated concrete slab walkway, characterized in that: The prefabricated assembled concrete slab walkway is obtained by the construction method according to any one of claims 1-6.

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