Temporary support device for cantilever structure floor pouring and application method

Abstract

The application discloses a kind of overhanging structure floor pouring with temporary support device and application method, comprising: hoop seat, hoop is set on the lower flange plate of I-beam;Long inclined strut, be set in inclined shape, the lower end of long inclined strut is connected with the middle position of hoop seat, and upper end extends to the below of profiled steel plate edge mould;Short inclined strut, be set in inclined shape, the lower end of short inclined strut is connected with the end position of hoop seat, and upper end is connected with the lower end of long inclined strut;Support plate, horizontally set on long inclined strut;Square wood, set on support plate, and used to support profiled steel plate edge mould.The application is set by precast temporary support device, and production cost is low, and it can be factory production, while being quickly installed on I-beam, and the stable support of profiled steel plate edge mould is realized, without welding and cutting operation, solve the problem of installation and dismounting complicated, labor, time-consuming, high implementation cost, influence building structure safety and damage steel beam lacquer film.

Description

Technical Field

[0001] This invention relates to the field of building construction, and in particular to a temporary support device and its application method for pouring cantilevered floor slabs. Background Technology

[0002] Currently, steel structure buildings often use I-beams as the main floor beams and profiled steel sheet composite floor slabs as supporting floor slabs. When the profiled steel sheets protrude outwards from the perimeter of the floor slab of a steel structure building to a certain length, temporary supports need to be installed first, and then the floor slab concrete is poured. After the floor slab concrete reaches its strength, the temporary supports are removed.

[0003] Existing temporary support methods include steel cantilever support beams and tripod supports. Both existing steel cantilever support beam and tripod support construction methods have the following problems: First, installation and dismantling require a large amount of on-site welding and cutting work; Second, welding and cutting operations can affect the structural safety of welded joints in steel beams of buildings. Third, welding and cutting operations can damage the paint film; Fourth, repairing damaged paint films will incur additional costs. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a temporary support device and application method for pouring cantilevered floor slabs. The technical problem to be solved is that traditional temporary supports have technical problems such as complicated installation and dismantling, large labor cost, long time consumption, high implementation cost, affecting the safety of building structure and damaging the paint film of steel beams.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a temporary support device for pouring cantilevered floor slabs, comprising: The clamp is fastened to the lower flange plate of the I-beam; The long diagonal brace is set at an incline. The lower end of the long diagonal brace is connected to the middle position of the hoop seat, and the upper end extends to the bottom of the profiled steel sheet edge mold. The short diagonal brace is set at an angle, with its lower end connected to the end of the hoop seat and its upper end connected to the lower end of the long diagonal brace. The support plate is horizontally positioned above the long diagonal brace; Square timber is placed on the support plate and is used to support the edge mold of the profiled steel sheet.

[0006] In a preferred embodiment, the present invention can be further configured as follows: the clamp includes a fixed flat steel, a lower flat steel, an upper flat steel, and a locking pin; the fixed flat steel is U-shaped and clamps one side of the lower flange of the I-beam; the long diagonal brace is connected to the fixed flat steel; the lower flat steel is horizontally integrally disposed at the lower end of the fixed flat steel and extends to the lower side of the other side of the lower flange of the I-beam; the upper flat steel is horizontally disposed above the lower flat steel and presses against the upper surface of the other side of the lower flange of the I-beam; and the locking pin vertically penetrates the lower flat steel and the upper flat steel.

[0007] In a preferred embodiment, the present invention can be further configured such that: the lower flat steel is bent upward at one end away from the fixed flat steel and a vertical plate is provided thereon; a drive rod is horizontally threaded onto the vertical plate; a pressure plate is rotatably connected to the end of the drive rod; and the pressure plate is used to press the outer surface of the lower flange plate of the I-beam.

[0008] In a preferred embodiment, the present invention may be further configured such that pads are provided on the inner sides of the fixed flat steel, the lower flat steel, and the upper flat steel.

[0009] In a preferred embodiment, the present invention can be further configured as follows: the long diagonal brace includes an upper round steel pipe section, a middle screw section, a lower round steel pipe section, and a handle; the upper round steel pipe section is rotatably connected to the support plate; the lower round steel pipe section is rotatably connected to the hoop seat; the two ends of the middle screw section are respectively threaded to the upper round steel pipe section and the lower round steel pipe section; and the handle is located at the middle position of the middle screw section.

[0010] In a preferred embodiment, the present invention can be further configured such that: the short diagonal brace includes a short diagonal screw section, a short diagonal round steel pipe section, and an adjusting nut; the short diagonal screw section is rotatably connected to the lower end of the long diagonal brace; the short diagonal round steel pipe section is rotatably connected to the hoop seat and slidably connected to the short diagonal screw section; and the adjusting nut is threadedly connected to the short diagonal screw section and presses against the upper end of the short diagonal round steel pipe section.

[0011] In a preferred embodiment, the present invention can be further configured such that the cross-section of the pallet is U-shaped and the square timber is embedded in the pallet.

[0012] In a preferred embodiment, the present invention can be further configured such that: the inner side of the pallet is lower than the upper end face of the square timber, and the outer side is higher than the upper end face of the square timber, and the outer side of the pallet presses against the outer surface of the profiled steel plate edge mold.

[0013] Another objective of this invention is to provide an application method for a temporary support device for pouring cantilevered floor slabs. The technical problem to be solved is that traditional temporary supports are cumbersome to install and dismantle, require a lot of labor, take a long time, have high implementation costs, affect the safety of building structures, and damage the paint film on steel beams.

[0014] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a method for applying a temporary support device for pouring cantilevered structural floor slabs, comprising the following steps: S1, Ground assembly: First, connect the upper end of the long diagonal brace to the support plate, then connect the lower end of the long diagonal brace to the fixed flat steel, and then connect the lower end of the short diagonal brace to the fixed flat steel and the upper end to the long diagonal brace. S2, Construction positioning: Using an aerial work platform, mark the installation position line on the lower flange plate of the I-beam with a stone pencil or marker. S3, hoop installation: First, hook the fixed flat steel to one side of the lower flange plate of the I-beam. Then, control the drive rod to rotate so that the pressure plate presses against the outer surface of the lower flange plate of the I-beam. Then, place the upper flat steel on the other side above the lower flange plate of the I-beam and vertically pass through the locking pin to fix the lower flat steel and the upper flat steel together. S4. Device adjustment: First, adjust the angle between the support plate and the long diagonal brace, then fix the connection position, then embed the square timber into the support plate, and then control the rotation of the middle screw section through the handle to adjust the length of the long diagonal brace. At the same time, make the long side of the support plate close to the outer surface of the profiled steel sheet mold, and the square timber close to the bottom of the profiled steel sheet mold. Then control the rotation of the adjusting nut to make the short diagonal brace support the long diagonal brace to form a stable triangular force system. S5, dismantle the device. After the concrete strength of the cantilevered structural floor slab reaches the standard, first control the rotation of the adjusting nut to loosen the short and long diagonal braces. Then rotate the middle screw section to adjust the length of the long diagonal brace, so that the long side of the support plate is detached from the outer facade of the profiled steel sheet side mold. At the same time, the square timber is detached from the bottom of the profiled steel sheet side mold. Then remove the square timber, loosen the locking pin, remove the upper flat steel, and then loosen the drive rod to release the clamp on the lower flange plate of the I-beam, thus removing the entire hoop.

[0015] In summary, the present invention has the following beneficial effects: 1. By setting up prefabricated temporary support devices, the production cost is low, and they can be produced in factories. They can also be quickly installed on I-beams and provide stable support for the side molds of profiled steel sheets. No welding or cutting operations are required, which solves the problems of complicated installation and dismantling, large labor costs, long time consumption, high implementation costs, impact on building structural safety, and damage to the paint film of steel beams. 2. By setting up temporary support devices that allow each component to be freely disassembled, the temporary support devices can be reused, saving costs. 3. By setting the hoop, long diagonal brace and short diagonal brace in a triangular shape, the three together form a geometrically invariant system, ensuring that it will not deform and increasing stability; 4. By setting up highly stable hoop seats, the entire temporary support device is firmly fixed to the lower flange plate of the I-beam, preventing it from falling off or sliding laterally, thus increasing stability; 5. By connecting the fixed flat steel on the hoop with the long and short diagonal braces, the initial assembly can be completed without disassembly, saving time and labor for subsequent reassemblies. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the usage state of Example 1; Figure 2 This is a schematic diagram of the structure of Example 1; Figure 3 This is a schematic diagram of the connection relationship in Example 1; Figure 4 This is a schematic diagram of the hoop seat in Example 1.

[0017] Attached reference numerals: 1. Hoop seat; 11. Fixed flat steel; 12. Lower flat steel; 13. Upper flat steel; 14. Locking pin; 15. Pad; 16. Vertical plate; 17. Drive rod; 18. Pressure plate; 2. Long diagonal brace; 21. Upper section of round steel pipe; 22. Middle section of screw rod; 23. Lower section of round steel pipe; 24. Handle; 3. Short diagonal brace; 31. Short diagonal screw rod; 32. Short diagonal round steel pipe; 33. Adjusting nut; 4. Support plate; 5. Square timber. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings.

[0019] Example 1: like Figure 1 , Figure 2 , Figure 3 As shown, a temporary support device for pouring cantilevered floor slabs includes a hoop 1, a long diagonal brace 2, a short diagonal brace 3, a support plate 4, and square timber 5.

[0020] like Figure 3 , Figure 4 As shown, the clamp 1 is clamped onto the lower flange plate of the I-beam. The clamp 1 includes a fixed flat steel 11, a lower flat steel 12, an upper flat steel 13, and a locking pin 14.

[0021] like Figure 4 As shown, the fixed flat steel 11 is U-shaped and clamps one side of the lower flange of the I-beam. The lower flat steel 12 is horizontally and integrally set at the lower end of the fixed flat steel 11 and extends to the other side below the lower flange of the I-beam.

[0022] like Figure 4 As shown, the upper flat steel 13 is horizontally positioned above the lower flat steel 12 and presses against the upper surface of the other side of the lower flange plate of the I-beam. The locking pin 14 vertically penetrates the lower flat steel 12 and the upper flat steel 13, fixing the entire hoop 1 to the lower flange plate of the I-beam. Gaskets 15 are provided on the inner sides of the fixing flat steel 11, the lower flat steel 12, and the upper flat steel 13 to ensure that the paint film on the surface of the I-beam is not damaged.

[0023] like Figure 4 As shown, the lower flat steel 12 is bent upward at the end away from the fixed flat steel 11 and a vertical plate 16 is provided. A drive rod 17 is horizontally threaded on the vertical plate 16. A pressure plate 18 is rotatably connected to the end of the drive rod 17. The pressure plate 18 is used to press the outer facade of the lower flange plate of the I-beam.

[0024] like Figure 2 , Figure 3 As shown, the long diagonal brace 2 is set at an inclination. The long diagonal brace 2 includes an upper round steel pipe section 21, a middle screw section 22, a lower round steel pipe section 23, and a handle 24.

[0025] like Figure 3 , Figure 4 As shown, the upper round steel pipe section 21 extends to the bottom of the profiled steel sheet edge mold, and the lower round steel pipe section 23 is rotatably connected to the fixed flat steel 11. The two ends of the middle screw section 22 are respectively threaded to the upper round steel pipe section 21 and the lower round steel pipe section 23, and the handle 24 is located in the middle of the middle screw section 22.

[0026] like Figure 3 , Figure 4 As shown, the short diagonal brace 3 is set at an angle. The short diagonal brace 3 includes a short diagonal screw section 31, a short diagonal round steel pipe section 32, and an adjusting nut 33.

[0027] like Figure 3 , Figure 4 As shown, the short inclined screw section 31 is rotatably connected to the lower end of the lower round steel pipe section 23, and the short inclined round steel pipe section 32 is rotatably connected to the fixed flat steel 11 and slidably connected to the short inclined screw section 31. The adjusting nut 33 is threadedly connected to the short inclined screw section 31 and presses against the upper end of the short inclined round steel pipe section 32.

[0028] like Figure 3 , Figure 4 As shown, the support plate 4 is horizontally positioned above the upper circular steel pipe section 21 and is rotatably connected to it. The rotational positions of the two are locked and fixed by bolts, thus achieving fixation after the angle of the support plate 4 is adjusted. The cross-section of the support plate 4 is U-shaped, and the square timber 5 is embedded in the support plate 4 to support the side mold of the profiled steel sheet. The inner side of the support plate 4 is lower than the upper end face of the square timber 5, and the outer side is higher than the upper end face of the square timber 5. The outer side of the support plate 4 presses against the outer surface of the side mold of the profiled steel sheet.

[0029] When temporary support is needed for the side mold of the profiled steel sheet, first remove the hoop 1, so that the fixing flat steel 11 hooks onto one side of the lower flange plate of the I-beam. Then, control the drive rod 17 to rotate, so that the pressure plate 18 presses against the outer surface of the lower flange plate of the I-beam, thus fixing the fixing flat steel 11. At the same time, the fixing flat steel 11 can be adapted to I-beams of different widths. Then, place the upper flat steel 13 on the other side above the lower flange plate of the I-beam and vertically pass through the locking pin 14 to fix the lower flat steel 12 and the upper flat steel 13 together, so that they will not fall off or slip laterally, increasing the structural strength and stability of the entire hoop 1.

[0030] Then, control the rotation of the support plate 4 to adjust the angle between the support plate 4 and the long diagonal brace 2. Then, tighten the nuts at the connection between the support plate 4 and the long diagonal brace 2 to fix the support plate 4 after the angle adjustment. Then, embed the square timber 5 into the support plate 4 and control the rotation of the middle screw section 22 through the handle 24 to adjust the length of the long diagonal brace 2. At the same time, make the long side of the support plate 4 close to the outer surface of the profiled steel sheet mold, and the square timber 5 close to the bottom of the profiled steel sheet mold.

[0031] Then, control the rotation of the adjusting nut 33 to adjust the length of the short diagonal brace 3. At this time, the short diagonal brace 3 can be used to support the long diagonal brace 2, so that the hoop 1, the long diagonal brace 2 and the short diagonal brace 3 form a stable triangular force system, thereby realizing the temporary support of the profiled steel sheet side mold.

[0032] After the concrete strength of the cantilevered floor slab reaches the required level, first control the rotation of adjusting nut 33 to loosen the short diagonal brace 3 and the long diagonal brace 2. Then control the rotation of the long diagonal brace 2 to disengage the long side of the support plate 4 from the outer facade of the profiled steel sheet mold, while simultaneously disengaging the square timber 5 from the bottom of the profiled steel sheet mold. Then remove the square timber 5, loosen the locking pin 14, remove the upper flat steel 13, and finally loosen the drive rod 17 to release the clamp on the lower flange plate of the I-beam, thus dismantling the entire temporary support device.

[0033] Therefore, by setting up prefabricated temporary support devices, the production cost is low, they can be manufactured in factories, and they can be quickly installed on I-beams to achieve stable support for the profiled steel sheet side molds. No welding or cutting operations are required, which solves the problems of cumbersome installation and dismantling, large labor costs, long time consumption, high implementation costs, impact on building structural safety, and damage to the paint film of steel beams.

[0034] During the use of the temporary support device, the fixed flat steel 11 is connected to the long diagonal brace 2 and the short diagonal brace 3, so that the temporary support device does not need to be disassembled after the first integrated application, and subsequent applications can save the time and labor of secondary assembly.

[0035] Furthermore, because each component can be freely disassembled, the temporary support device can be reused, saving costs. Additionally, each damaged component can be replaced individually, making the maintenance process more convenient. Example 2:

[0036] A method for applying a temporary support device for pouring cantilevered floor slabs includes the following steps: S1, Ground assembly: First, connect the upper end of the long diagonal brace 2 to the support plate 4, then connect the lower end of the long diagonal brace 2 to the fixed flat steel 11, and then connect the lower end of the short diagonal brace 3 to the fixed flat steel 11 and the upper end to the long diagonal brace 2.

[0037] S2, Construction Positioning: Using an aerial work platform, mark the installation position line on the lower flange plate of the I-beam with a stone pencil or marker.

[0038] S3, hoop 1 installation: First, hook the fixed flat steel 11 to one side of the lower flange plate of the I-beam. Then, control the drive rod 17 to rotate so that the pressure plate 18 presses against the outer surface of the lower flange plate of the I-beam. Then, place the upper flat steel 13 on the other side above the lower flange plate of the I-beam and vertically pass through the locking pin 14 to fix the lower flat steel 12 and the upper flat steel 13 together.

[0039] S4, device adjustment: First, adjust the angle between the support plate 4 and the long diagonal brace 2, then fix the connection position, then embed the square timber 5 into the support plate 4, and then control the rotation of the middle screw section 22 through the handle 24 to realize the length adjustment of the long diagonal brace 2. At the same time, make the long side of the support plate 4 close to the outer surface of the profiled steel plate mold, and the square timber 5 close to the bottom of the profiled steel plate mold. Then control the rotation of the adjusting nut 33 to make the short diagonal brace 3 support the long diagonal brace 2, forming a stable triangular force system.

[0040] S5, dismantle the device. After the concrete strength of the cantilevered structure floor slab reaches the standard, first control the rotation of the adjusting nut 33 to loosen the short diagonal brace 3 and the long diagonal brace 2. Then rotate the middle screw section 22 to adjust the length of the long diagonal brace 2, so that the long side of the support plate 4 is separated from the outer facade of the profiled steel plate side mold. At the same time, the square timber 5 is separated from the bottom of the profiled steel plate side mold. Then remove the square timber 5, loosen the locking pin 14, remove the upper flat steel 13, and then loosen the drive rod 17 to release the clamp on the lower flange plate of the I-beam, thus removing the entire hoop seat 1.

[0041] The specific embodiments are merely illustrative of the present invention and are not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A temporary support device for pouring cantilevered floor slabs, characterized in that: include: Hoop seat (1), which is clamped onto the lower flange plate of the I-beam; The long diagonal brace (2) is set at an inclination. The lower end of the long diagonal brace (2) is connected to the middle position of the hoop seat (1), and the upper end extends to the bottom of the profiled steel plate edge mold. The short diagonal brace (3) is set at an inclination. The lower end of the short diagonal brace (3) is connected to the end position of the hoop (1), and the upper end is connected to the lower end of the long diagonal brace (2). The support plate (4) is horizontally positioned above the long diagonal brace (2); A square timber (5) is placed on the support plate (4) and is used to support the edge mold of the profiled steel plate.

2. The temporary support device for pouring cantilevered floor slabs according to claim 1, characterized in that: The clamp (1) includes a fixed flat steel (11), a lower flat steel (12), an upper flat steel (13), and a locking pin (14). The fixed flat steel (11) is U-shaped and clamps one side of the lower flange of the I-beam. The long diagonal brace (2) is connected to the fixed flat steel (11). The lower flat steel (12) is horizontally and integrally set at the lower end of the fixed flat steel (11) and extends to the lower side of the lower flange of the I-beam. The upper flat steel (13) is horizontally set above the lower flat steel (12) and presses against the upper surface of the lower flange of the I-beam. The locking pin (14) vertically penetrates the lower flat steel (12) and the upper flat steel (13).

3. A temporary support device for pouring cantilevered floor slabs according to claim 2, characterized in that: The lower flat steel (12) is bent upward at the end away from the fixed flat steel (11) and a vertical plate (16) is provided. A drive rod (17) is horizontally threaded on the vertical plate (16). A pressure plate (18) is rotatably connected to the end of the drive rod (17). The pressure plate (18) is used to press the outer facade of the lower flange plate of the I-beam.

4. A temporary support device for pouring cantilevered floor slabs according to claim 3, characterized in that: The inner sides of the fixed flat steel (11), the lower flat steel (12) and the upper flat steel (13) are all provided with pads (15).

5. A temporary support device for casting cantilevered floor slabs according to claim 1, characterized in that: The long diagonal brace (2) includes an upper round steel pipe section (21), a middle screw section (22), a lower round steel pipe section (23), and a handle (24). The upper round steel pipe section (21) is rotatably connected to the support plate (4), and the lower round steel pipe section (23) is rotatably connected to the hoop (1). The two ends of the middle screw section (22) are threaded to the upper round steel pipe section (21) and the lower round steel pipe section (23), respectively. The handle (24) is located in the middle of the middle screw section (22).

6. A temporary support device for pouring cantilevered floor slabs according to claim 1, characterized in that: The short diagonal brace (3) includes a short diagonal screw section (31), a short diagonal round steel pipe section (32), and an adjusting nut (33). The short diagonal screw section (31) is rotatably connected to the lower end of the long diagonal brace (2). The short diagonal round steel pipe section (32) is rotatably connected to the hoop (1) and slidably connected to the short diagonal screw section (31). The adjusting nut (33) is threadedly connected to the short diagonal screw section (31) and presses against the upper end of the short diagonal round steel pipe section (32).

7. A temporary support device for casting cantilevered floor slabs according to claim 1, characterized in that: The cross-section of the pallet (4) is U-shaped, and the square timber (5) is embedded in the pallet (4).

8. A temporary support device for pouring cantilevered floor slabs according to claim 7, characterized in that: The inner side of the pallet (4) is lower than the upper end face of the square timber (5), and the outer side is higher than the upper end face of the square timber (5). The outer side of the pallet (4) presses against the outer surface of the profiled steel plate edge mold.

9. A method for applying a temporary support device for pouring cantilevered floor slabs, characterized in that: Includes the following steps: S1, Ground assembly: First, connect the upper end of the long diagonal brace (2) to the support plate (4), then connect the lower end of the long diagonal brace (2) to the fixed flat steel (11), and then connect the lower end of the short diagonal brace (3) to the fixed flat steel (11) and the upper end to the long diagonal brace (2). S2, Construction positioning: Using an aerial work platform, mark the installation position line on the lower flange plate of the I-beam with a stone pencil or marker. S3, hoop (1) installation: First, hook the fixed flat steel (11) to one side of the lower flange plate of the I-beam. Then, control the drive rod (17) to rotate so that the pressure plate (18) presses the outer surface of the lower flange plate of the I-beam. Then, place the upper flat steel (13) on the other side above the lower flange plate of the I-beam and vertically pass through the locking pin (14) to fix the lower flat steel (12) and the upper flat steel (13) together. S4, device adjustment: first adjust the angle between the support plate (4) and the long diagonal brace (2), then fix the connection position, then embed the square timber (5) into the support plate (4), then control the rotation of the middle screw section (22) through the handle (24) to realize the length adjustment of the long diagonal brace (2), at the same time make the long side of the support plate (4) close to the outer surface of the profiled steel plate mold, and the square timber (5) close to the bottom of the profiled steel plate mold. Then control the rotation of the adjusting nut (33) to make the short diagonal brace (3) support the long diagonal brace (2) to form a stable triangular force system. S5, dismantle the device. After the concrete strength of the cantilever structure floor slab reaches the standard, first control the rotation of the adjusting nut (33) to loosen the short diagonal brace (3) and the long diagonal brace (2). Then rotate the middle screw section (22) to adjust the length of the long diagonal brace (2), so that the long side of the support plate (4) is separated from the outer facade of the profiled steel plate side mold. At the same time, the square timber (5) is separated from the bottom of the profiled steel plate side mold. Then remove the square timber (5), loosen the locking pin (14), remove the upper flat steel (13), and then loosen the drive rod (17) to release the clamping of the lower flange plate of the I-beam, thus removing the entire hoop seat (1).

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