A device and construction method for once-pouring forming a column

Abstract

The application relates to the technical field of structural column forming, in particular to a device and a construction method for one-time pouring forming of a structural column, which comprises a mounting hole penetrating through a floor and arranged above a structural column to be poured, a pouring pipe vertically arranged in the mounting hole, an upper end surface of the pouring pipe being flush with an upper surface of the upper floor, a fixing rib plate arranged on a circumferential surface of the pouring pipe and capable of extending into the floor, and a lower end surface of the pouring pipe being located below the floor, the distance between the lower end surface of the pouring pipe and a lower surface of the upper floor being 50-150 mm, so that the forming efficiency of the structural column is accelerated, and the possibility of surface cracking of the structural column is reduced.

Description

Technical Field

[0001] This application relates to the field of structural column forming technology, and in particular to a device and construction method for one-time casting of structural columns. Background Technology

[0002] Currently, structural columns are an important seismic structural measure in the secondary structure of building construction projects. They are characterized by a large number of installations and low construction efficiency in large public buildings and high-rise commercial and residential buildings. Due to their structural characteristics, structural columns are formed after the main structure is completed, followed by the sequential completion of rebar installation and rebar binding, brick wall construction, formwork erection, and concrete pouring.

[0003] According to relevant documents, the traditional construction method for structural columns is as follows: when the formwork is erected, a funnel-shaped feeding hopper is set on the top of one side of the formwork. After all the formwork is erected, the workers pour concrete into the formwork. After the concrete inside the formwork cools down, the formwork and the feeding hopper are removed, the excess concrete at the feeding hopper location is removed, and cement mortar is used to smooth and level the chiseled surface.

[0004] The existing technical solutions mentioned above have the following drawbacks: removing excess concrete from the feed hopper location wastes a lot of time and manpower; the secondary troweling and leveling of the chiseled surface is difficult, resulting in low construction efficiency; and there is also the problem of cracking of the repaired surface. Summary of the Invention

[0005] In order to accelerate the forming efficiency of structural columns and reduce the possibility of surface cracking of structural columns, this application provides a device and construction method for one-time casting of structural columns.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution:

[0007] A device for one-time casting of a structural column is installed on the floor slab above the structural column to be cast. An installation hole is opened on the floor slab corresponding to the position of the structural column. The device includes a casting pipe vertically installed inside the installation hole. The upper end face of the casting pipe is flush with the upper surface of the floor slab above. A fixing rib is provided on the periphery of the casting pipe, which can extend into the floor slab. The lower end face of the casting pipe is located below the floor slab. The distance between the lower end face of the casting pipe and the lower surface of the upper floor slab is 50-150mm.

[0008] By adopting the above scheme, when it is necessary to cast structural columns, the casting pipe is installed inside the installation hole. When casting the upper floor slab, the casting pipe is fixed in the installation hole by fixing ribs. After the structural column formwork required for casting is installed on the outside of the structural column to be cast, the lower end of the casting pipe will be connected to the inside of the lower steel cage. At this time, concrete can be added into the casting pipe at the upper end. After the concrete solidifies, the casting process of the structural column can be completed. In this way, after the structural column is formed, it is no longer necessary for workers to remove excess concrete, which saves time and manpower, speeds up the forming efficiency of structural columns, and reduces the possibility of surface cracking of structural columns.

[0009] Preferably, the casting pipe is a PVC pipe with a diameter of 150-250mm, and the inner diameter of the installation hole is 10-20mm larger than the diameter of the casting pipe.

[0010] Preferably, four auxiliary holes are provided at intervals on the upper end of the side wall of the casting pipe, the bottom of the auxiliary holes is located above the fixed rib, and an auxiliary plate is provided inside the auxiliary holes. The lower end of the auxiliary plate is rotatably connected to the casting pipe so that the auxiliary plate can be flipped into the casting pipe.

[0011] Preferably, there is a gap between the two sides of the auxiliary plate and the pouring pipe, and a limiting plate is provided between the auxiliary plate and the pouring pipe. The limiting plate has an I-shaped cross-section so that the auxiliary plate on both sides and the side wall of the pouring pipe can be inserted into the limiting plate.

[0012] Preferably, the upper surface of the limiting plate is provided with an extension plate, the extension plate having an arc-shaped structure with the same curvature as the casting pipe, and the lower surface of the extension plate having an embedding groove for the auxiliary plate or the casting pipe to be embedded.

[0013] Preferably, expanding foam is used to fill the space between the casting pipe and the wall of the installation hole.

[0014] Preferably, multiple reinforcing holes are provided on the side of the auxiliary plate, and the multiple reinforcing holes are evenly distributed at intervals along the vertical direction on the auxiliary plate.

[0015] Preferably, a fixing groove is provided on the lower end face of the casting pipe for the lower reinforcing cage to enter.

[0016] Preferably, the width of the fixing rib is 50mm, and a reinforcing rib is provided at the connection between the fixing rib and the casting pipe.

[0017] A construction method for casting structural columns in one go includes the following steps:

[0018] S1. Assembly: Determine the casting pipe and fixing ribs with specific outer diameters according to the dimensions of the structural column to be formed, and weld the fixing ribs and reinforcing ribs to the outside of the casting pipe.

[0019] S2. Opening: According to the size of the auxiliary plate, an auxiliary hole is opened on the casting pipe, and a connecting ring is formed on the inner wall of the casting pipe to allow the auxiliary plate and the casting pipe to rotate and connect together.

[0020] S3. Installation: Drill an installation hole in the floor slab above the structural column to be formed, insert the pouring pipe into the installation hole, so that the lower end of the pouring pipe extends 100mm below the lower surface of the floor slab above. At this time, it is necessary to ensure that the steel cage is embedded in the fixing groove below the pouring pipe. Then, when tying the floor slab structural steel bars, use the steel bars to fix the fixing rib plate.

[0021] S4. Pouring: Pour concrete into the pouring pipe until the concrete level is 10mm from the bottom of the auxiliary hole. Remove the limiting plate on the pouring pipe, flip the auxiliary plate inside the pouring pipe, and continue pouring concrete into the pouring pipe.

[0022] In summary, this application has the following technical effects:

[0023] 1. By setting up a pouring pipe that can be installed on the floor slab above the structural column to be poured, concrete is added into the pouring pipe at the upper end of the pouring pipe during pouring. After the concrete cools and solidifies, no other processing is required on the outer surface of the structural column, and no secondary troweling or leveling is required. This achieves the effect of speeding up the construction efficiency of the structural column and reducing the possibility of surface cracking of the structural column.

[0024] 2. By setting up an auxiliary plate with reinforcement holes, the auxiliary plate is placed inside the auxiliary holes and rotatably connected to the pouring pipe. When pouring concrete, after the concrete reaches a certain height, the auxiliary plate can be flipped closer to the inside of the pouring pipe. When pouring concrete, the concrete will fix the auxiliary plate in the concrete structural column. At the same time, the concrete will also enter the gap between the pouring pipe and the structural column formwork or wall, making the strength of the formed structural column more stable. Attached Figure Description

[0025] Figure 1 This is a front view of the device in the embodiment of this application (the filled content in the figure is the poured concrete);

[0026] Figure 2 This is a partial exploded view of the limiting rod exploding out of the casting pipe in an embodiment of this application.

[0027] In the diagram, 1. Casting pipe; 11. Auxiliary hole; 12. Auxiliary plate; 13. Limiting plate; 14. Extension plate; 15. Reinforcing hole; 2. Fixing rib; 3. Reinforcing rib; 4. Floor slab; 5. Fixing groove; 6. Expanding foam. Detailed Implementation

[0028] The present application will be further described in detail below with reference to the accompanying drawings.

[0029] Reference Figure 1 This application provides a device for one-time casting of a structural column, which is installed on a floor slab 4 above the structural column to be cast. The device includes a casting pipe 1, a fixing rib 2, and a reinforcing rib 3. An installation hole is formed through the casting pipe 1 on the floor slab 4 above the structural column. The casting pipe 1 is installed inside the installation hole and its central axis is vertical. The upper end face of the casting pipe 1 is flush with the upper surface of the floor slab 4, and the lower end face of the casting pipe 1 is located below the lower surface of the floor slab 4. The fixing rib 2 is generally annular and is sleeved on the outer surface of the casting pipe 1 and fixedly connected to the casting pipe 1. The central axis of the casting pipe 1 is perpendicular to the plane of the fixing rib 2. The fixing rib 2 extends into the floor slab 4 and is fixedly connected to the floor slab 4. The reinforcing rib 3 is generally triangular and is fixed at the connection between the fixing rib 2 and the casting pipe 1.

[0030] When a structural column needs to be cast, the casting pipe 1 is installed inside the installation hole. When the upper floor slab 4 is being cast, the casting pipe 1 is fixed in the installation hole by fixing ribs 2. After the structural column formwork required for casting is installed on the outside of the structural column to be cast, the lower end of the casting pipe 1 will be connected to the inside of the lower steel cage. At this time, concrete can be added into the casting pipe 1 at the upper end. After the concrete solidifies, the casting process of the structural column can be completed. In this way, after the structural column is formed, it is no longer necessary for workers to remove excess concrete, which saves time and manpower, speeds up the forming efficiency of the structural column, and reduces the possibility of surface cracking of the structural column.

[0031] In this embodiment, the distance between the lower end face of the casting pipe 1 and the lower surface of the upper floor slab 4 is 50-150mm, the diameter of the casting pipe 1 is 150-250mm, the inner diameter of the mounting hole is 10-20mm larger than the diameter of the casting pipe 1, and the width of the fixing rib 2 is 50mm. Specifically, the distance between the lower end face of the casting pipe 1 and the lower surface of the upper floor slab 4 is 100mm, the diameter of the casting pipe 1 is 200mm, and the inner diameter of the mounting hole is 15mm larger than the diameter of the casting pipe 1.

[0032] Reference Figure 1 and Figure 2After concrete is added into the pouring pipe 1, gaps may exist between the outer surface of the pouring pipe 1 and the outer structural column formwork or the two side walls. To reduce the possibility of such gaps, four auxiliary holes 11 are provided downward at intervals on the upper end face of the side wall of the pouring pipe 1. The bottom of the auxiliary holes 11 is located above the fixing rib plate 2. An auxiliary plate 12 is provided inside the auxiliary holes 11. The lower end face of the auxiliary plate 12 is rotatably connected to the pouring pipe 1 so that the auxiliary plate 12 can be flipped into the pouring pipe 1. There are gaps between the two sides of the auxiliary plate 12 and the pouring pipe 1. A limiting plate 13 is provided between the auxiliary plate 12 and the pouring pipe 1. The cross-sectional shape of the limiting plate 13 is I-shaped so that the auxiliary plates 12 and the side walls of the pouring pipe 1 on both sides can be inserted into the limiting plate 13. An extension plate 14 is provided on the upper end face of the limiting plate 13. The extension plate 14 is an arc-shaped structure with the same curvature as the pouring pipe 1. An embedding groove for the auxiliary plate 12 or the pouring pipe 1 to be embedded is provided on the lower surface of the extension plate 14.

[0033] After the auxiliary plate 12 is rotated at a certain angle toward the inside of the pouring pipe 1, the concrete will embed the auxiliary plate 12 into the concrete. In order to make the connection between the concrete and the auxiliary plate 12 more stable, multiple reinforcing holes 15 are provided on the side of the auxiliary plate 12. The multiple reinforcing holes 15 are evenly distributed on the auxiliary plate 12 in the vertical direction.

[0034] To further improve the structural stability of the formed structural column, a fixing groove 5 is provided on the lower end face of the pouring pipe 1 for the lower steel cage to enter. When forming the structural column, the height of the steel cage used in the structural column can be increased. When the upper pouring pipe 1 is installed on the floor slab 4, the upper end of the steel cage will be embedded in the fixing groove 5. This can improve the connection between the pouring pipe 1 and the steel cage, thereby improving the stability of the structural column after it is formed.

[0035] In other instances, to reduce the possibility of gaps between the outer surface of the pouring pipe 1 and the outer structural column formwork or the walls on both sides, expanding foam 6 is added between the outer surface of the pouring pipe 1 and the outer structural column formwork or the walls on both sides after concrete is added to the pouring pipe 1.

[0036] This application provides a method for one-time casting of structural columns, including the following steps:

[0037] S1. Assembly: Determine the casting pipe 1 and fixing rib 2 with specific outer diameter according to the size of the structural column to be formed, and weld the fixing rib 2 and reinforcing rib 3 to the outside of the casting pipe 1.

[0038] S2. Opening: According to the size of the auxiliary plate 12, an auxiliary hole 11 is opened on the casting pipe 1, and a connecting ring is formed on the inner wall of the casting pipe 1 so that the auxiliary plate 12 and the casting pipe 1 are rotatably connected together.

[0039] S3. Installation: Drill an installation hole on the floor slab 4 above the structural column to be formed, insert the pouring pipe 1 into the installation hole, so that the lower end of the pouring pipe 1 extends 100mm below the lower surface of the floor slab 4 above. At this time, it is necessary to ensure that the steel cage is embedded in the fixing groove 5 below the pouring pipe 1. Then, when tying the structural steel bars of the floor slab 4, use the steel bars to fix the fixing rib plate 2.

[0040] S4. Pouring: Pour concrete into the pouring pipe 1 until the concrete level is 10mm from the bottom of the auxiliary hole 11. Remove the limiting plate 13 on the pouring pipe 1, flip the auxiliary plate 12 inside the pouring pipe 1, and continue pouring concrete into the pouring pipe 1.

[0041] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A device for the one-off casting of a construction column, arranged on the floor (4) above the construction column to be cast, characterised in that: The installation hole is provided on the floor (4) corresponding to the position of the structural column, the device comprises a pouring pipe (1) vertically arranged in the installation hole, the upper end surface of the pouring pipe (1) is flush with the upper surface of the upper floor (4), the peripheral surface of the pouring pipe (1) is provided with a fixed rib plate (2) capable of extending into the floor (4), the lower end surface of the pouring pipe (1) is below the floor (4), and the distance between the lower end surface of the pouring pipe (1) and the lower surface of the upper floor (4) is 50-150mm; The upper end surface of the side wall of the pouring pipe (1) is downwardly and spacedly provided with four auxiliary holes (11), the hole bottom of the auxiliary hole (11) is above the fixed rib plate (2), and the auxiliary hole (11) is provided with an auxiliary plate (12) inside, and the lower end surface of the auxiliary plate (12) is rotatably connected with the pouring pipe (1) so that the auxiliary plate (12) can be flipped into the pouring pipe (1).

2. A device for one-time pouring forming of a constructional column according to claim 1, characterized in that: The pouring pipe (1) is a PVC pipe, the diameter of the pouring pipe (1) is 150-250mm, and the inner diameter of the installation hole is 10-20mm larger than the diameter of the pouring pipe (1).

3. A device for one pour forming of a constructional column according to claim 2, characterized in that: There is a gap between the two sides of the auxiliary plate (12) and the pouring pipe (1), and a limiting plate (13) is arranged between the auxiliary plate (12) and the pouring pipe (1), the cross-sectional shape of the limiting plate (13) is H-shaped, so that the two sides of the auxiliary plate (12) and the side wall of the pouring pipe (1) can be clamped into the limiting plate (13).

4. A device for one pour forming of a constructional column according to claim 3, characterized in that: The upper end surface of the limiting plate (13) is provided with an extension plate (14), the extension plate (14) is arc-shaped structure with the same arc as the pouring pipe (1), and the lower surface of the extension plate (14) is provided with an embedding groove for embedding the auxiliary plate (12) or the pouring pipe (1).

5. The apparatus for one-time pouring forming of a constructional column according to claim 2, characterized in that: The pouring pipe (1) and the hole wall of the installation hole are filled with foaming glue (6).

6. The apparatus of claim 1, wherein: A plurality of reinforcing holes (15) are formed on the side surface of the auxiliary plate (12), and the plurality of reinforcing holes (15) are uniformly and vertically distributed on the auxiliary plate (12).

7. The apparatus of claim 1, wherein: A fixing groove (5) is formed on the lower end surface of the pouring pipe (1) for the lower steel reinforcement cage to enter.

8. The apparatus of claim 1, wherein: The width of the fixed rib plate (2) is 50mm, and a reinforcing rib plate (3) is arranged at the connection between the fixed rib plate (2) and the pouring pipe (1).

9. A construction method for constructing a column by one-time casting, characterized by: The steps include: S1, assembling: according to the size of the structural column to be formed, a pouring pipe (1) with a specific outer diameter and a fixed rib plate (2) are determined, and the fixed rib plate (2) and the reinforcing rib plate (3) are welded to the outer side of the pouring pipe (1); S2, hole opening: according to the size of the auxiliary plate (12), the auxiliary hole (11) is formed on the pouring pipe (1), and the connecting ring is formed on the inner wall of the pouring pipe (1) to rotatably connect the auxiliary plate (12) and the pouring pipe (1) together; S3, installation: the installation hole is opened on the floor (4) above the structural column to be formed, the pouring pipe (1) is inserted into the installation hole, the lower end surface of the pouring pipe (1) is 100mm below the lower surface of the upper floor (4), at this time, it is necessary to ensure that the steel reinforcement cage is embedded into the fixing groove (5) below the pouring pipe (1), and then the fixed rib plate (2) is fixed by using the steel reinforcement when binding the structural steel reinforcement of the floor (4); S4, pouring: pouring concrete into the pouring pipe (1) until the concrete liquid surface is 10mm away from the bottom of the auxiliary hole (11), removing the limiting plate (13) on the pouring pipe (1), turning over the auxiliary plate (12) inside the pouring pipe (1), and continuing to pour concrete into the pouring pipe (1).

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