A formwork structure for pouring concrete columns

Abstract

The present invention discloses a formwork structure for casting concrete columns. The formwork structure includes a column body and fixing bands. The column body includes a plurality of column sections. Each column section is formed by combining at least two arc-shaped plates. The ends of adjacent arc-shaped plates in the same column section are spaced apart by a predetermined distance, so that the joint ends of the column section have a concave part and a convex part. The joint ends of adjacent column sections cooperate with each other. The fixing bands on the joint ends and the fixing bands on both sides of the joint ends are adjustable for tightly fitting adjacent column sections. The present invention solves the problems of large weight of traditional formwork, difficult docking and positioning, and poor surface quality of the formed concrete columns, etc.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and particularly to the building construction of a concrete column. Background Art

[0002] In the construction of concrete columns, especially circular columns, the existing technology generally uses steel formwork for pouring. In order to facilitate later removal, it is usually formed by combining multiple steel formworks, and then supplemented with steel pipe scaffolds for fixation. During the installation process, due to the large weight of the steel formwork and the relatively large number, it is difficult to position and install the steel formwork, resulting in cumbersome operation procedures, difficult control of the construction joint quality, and poor appearance of the cast concrete circular column. In the existing technology, for example, a concrete column formwork support tool with the patent number CN202211122784.6 can complete the enclosure of the vertical support rods arranged on the outer side of the concrete column body by setting a clamp, simplifying the installation and removal steps, and having stronger adjustability for columns of different sizes, improving the construction efficiency, but its formwork is usually long and cannot be assembled and installed. Summary of the Invention

[0003] Aiming at the above deficiencies, the purpose of the present invention is to provide a formwork structure for large-diameter concrete columns that is convenient for disassembly and assembly, has high construction efficiency, and good forming effect.

[0004] To this end, a formwork structure for pouring a concrete column of the present invention includes a column body and a fixing belt. The column body includes a plurality of column body segments. Each column body segment is formed by combining at least two arc-shaped plates. The ends of adjacent arc-shaped plates in the same column body segment are spaced apart by a predetermined distance, so that the joint end of the column body segment has a concave part and a convex part. The joint ends of adjacent column body segments cooperate with each other. At least a fixing belt is provided on the joint end. The fixing belt on the joint end and the fixing belts on both sides of the joint end are adjustable for tightly fitting adjacent column body segments.

[0005] Further, a convex block or a groove is provided on the side of the arc-shaped plate, and a groove matching the convex block or a convex block matching the groove is provided on the side of the adjacent arc-shaped plate.

[0006] Further, the fixing belt on the joint end and the fixing belts on both sides of the joint end can be fixed to the arc-shaped plate, and the fixing belt on the joint end is connected to the fixing belts on both sides of the joint end through a connecting rod, and the length of the connecting rod is adjustable.

[0007] Further, the length of the fixing plate is adjustable for tightly fitting adjacent arc-shaped plates in the same column body segment.

[0008] Further, a gap is provided between the column body segment and the fixing belt for setting a wooden square. Limiting blocks are provided on the outer surface of the arc-shaped plate at a predetermined distance in the vertical direction, and limiting grooves matching the limiting blocks are provided on the fixing belt.

[0009] Further, the limiting block and the limiting groove are wedge-shaped, so that the fixing belt restricts the arc-shaped plate from shifting towards the center of the concrete column under the extrusion of the wooden square.

[0010] Further, both ends of the limiting groove are sealed in such a way that the limiting groove can drive the arc-shaped plate to move longitudinally.

[0011] Further, it also includes reinforcing ribs vertically arranged on the outer surface of the column body. The reinforcing ribs are arranged in the middle of the arc-shaped plate, and the fixing belt is provided with holes for cooperating with the reinforcing ribs.

[0012] Further, the formwork structure also includes a base end. One end of the base end is a joint end connected to the column body. The base end is made of a steel pipe. The lower end of the steel pipe is cast integrally with the concrete foundation platform. The bottom area of the concrete foundation platform is larger than the bottom area of the steel pipe. Positioning grooves for fixing the reinforcing ribs are reserved on the concrete foundation platform, or the concrete foundation platform is cast and fixed together with the vertically arranged reinforcing ribs.

[0013] Further, connecting plates are provided at both ends of the fixing belt. A number of rubber sheets are arranged between the connecting plates. A fixing rod is arranged above the connecting plates. The rubber sheets are movably connected to the fixing rod so that the rubber sheets can rotate around the fixing rod. The fixing belt also includes a marking ruler and a positioning block. The marking ruler is hinged to one side of one of the connecting plates, and a positioning block for cooperating with the marking ruler is arranged on the other connecting plate. When the marking ruler contacts the positioning block, the marking ruler is parallel to the fixing belt. A marking ruler is provided on the fixing belt for observing the length of the connecting rod.

[0014] The beneficial effects of the present invention are as follows:

[0015] (1) In the specific embodiment of the present invention, the adjacent two arc-shaped plates on the same column body section are installed through the cooperation of the groove and the convex block, so that the joint treatment effect of the adjacent arc-shaped plates is better and misalignment is not likely to occur. And the adjacent arc-shaped plates are installed with misalignment vertically, so that the joint end has upper convex parts and lower concave parts similar to a square wave shape. The joint ends of the adjacent column body sections are installed in cooperation with each other. Compared with the flat end part, their combination is tighter, the positioning is more accurate, and the combination between the upper and lower column body sections is not likely to produce deviation, reducing the time consumption of processes such as alignment. Therefore, the disassembly and assembly are easier, the construction efficiency is higher, and the forming effect is better. Connecting rods with adjustable lengths are arranged on the fixing belts on the upper and lower sides of the joint end for adjusting the tightness of the adjacent column body sections, and the fixing belt with adjustable length can more conveniently adjust the formwork after the formwork is assembled.

[0016] (2)In the specific embodiment of the present invention, the joint end and the column body are fixed by the fixing belt. A rubber sheet is provided on the connecting plate of the fixing belt so that there is a certain adjustment space for the distance between the connecting plates, which is convenient for installation. The marking ruler provided on the connecting plate is used to observe the distance between the connecting plates, so that the construction workers can accurately adjust the fixing belt to the same tightness, making the diameters of different column sections of the formwork structure the same, avoiding the difference in column diameter caused by relying on experience judgment and subjective error. Therefore, the cast concrete column has consistent upper and lower dimensions and better appearance.

[0017] (3)In the specific implementation of the present invention, it further includes a base end, which is horizontally fixed on the concrete foundation platform. There are holes for the reinforcing bars on the concrete foundation platform, and the reinforcing bars are also positioning bars, making the installation of the column body have better verticality. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the connection relationship between the column sections formed by the arc-shaped plates and adjacent column sections;

[0019] Figure 2 It is a schematic diagram of the fixing belt and the reinforcing bars;

[0020] Figure 3 It is a schematic diagram of the connecting rod;

[0021] Figure 4 It is a schematic diagram of the connection relationship of the connecting plates of the fixing belt;

[0022] Figure 5 It is a schematic diagram of the fixing belt and the hole for the reinforcing bar to pass through;

[0023] Figure 6 It is a schematic diagram of the base end;

[0024] Figure 7 It is a top view schematic diagram of the formwork with wooden squares;

[0025] Figure 8 It is a schematic diagram of Embodiment 1 of the fixing belt with adjustable length;

[0026] Figure 9 It is a schematic diagram of Embodiment 2 of the fixing belt with adjustable length.

[0027] Description of the Reference Numerals: 1. Column body; 2. Column section; 201. Arc-shaped plate; 202. Groove; 203. Convex block; 3. Base end; 4. Joint end; 401. Upper convex part; 402. Lower concave part; 5. Fixing belt; 501. Connecting plate; 502. Hole; 503. Rubber sheet; 504. Fixing rod; 505. Marking ruler; 506. Positioning block; 507. Scale; 6. Concrete foundation platform; 7. Reinforcing bar; 8. Limit block; 9. Limit groove; 10. Wooden square; 11. Connecting rod; 111. Lead screw; 112. Nut; 113. Pipe body. Detailed implementation manners

[0028] To further elaborate on the technical means and effects adopted by the present invention to achieve the intended invention purpose, the following will, in conjunction with the accompanying drawings and preferred embodiments, elaborate in detail on the specific implementation manners, structures, features and their effects of the present invention as follows.

[0029] Refer to Figures 1 to 6As shown, a formwork structure for pouring concrete columns of the present invention comprises a column body 1, a base end 3 and a fixing belt 5, the column body 1 comprises a plurality of column body sections 2, the column body sections 2 comprise four arc-shaped plates 201 formed by combination, the arc-shaped plates 201 can be made of composite plates or plywood, one side of the two sides of the arc-shaped plates 201 is provided with a groove 202, and the other side is provided with a convex block 203, the combination of adjacent arc-shaped plates 201 is combined by the convex block 203 and the groove 202, the arc-shaped plates 201 have the same length, and are installed in a staggered manner in the length direction when combined, and the staggered installation means that the ends of adjacent arc-shaped plates 201 are not on the same horizontal plane, but are staggered by a distance to form a joint end 4 with an upper convex portion 401 and a lower concave portion 402, and the joint end 4 is used to be connected with the joint end 4 of the adjacent column body section 2 Compared with the connection of the ordinary horizontal end face through the fixing belt 5, the connection of this embodiment is more firm, the positioning is more accurate, it is not easy to produce deviation, and the installation is more convenient. The fixing belt 5 of this embodiment is at least arranged at the joint end 4 and both sides of the two adjacent column sections 2. The adjacent fixed sections are usually 30cm apart, and the width of the fixing belt 5 is greater than the width of the two joint ends 4 that match each other. The two ends of the fixing belt 5 are provided with connecting plates 501, and the connecting plates 501 are provided with threaded holes. The threaded holes are suitable for bolt fixing. A rubber sheet is provided between the connecting plates 501 to appropriately adjust the length of the fixing belt. The connecting end and the two sides are fixed with an adjustable length connecting rod 11. The lower side of the column 1 is connected to the base end 3, and the base end 3 can be formed by a steel pipe or a combination of several arc-shaped plates. Generally speaking, the main reinforcement and stirrups are first set on the foundation of the concrete column, and then the template is spliced ​​on the outside of the reinforcement. When splicing the template, the flushing and joints between the adjacent plates are difficult to ensure. In this embodiment, the tightness between the adjacent plates can be easily handled through the adjustable fixing belt, and the gap is small and the flatness is good. In this embodiment, the base end 3 is made of steel pipe, and one end of the base end 3 connected to the column body 1 is the joint end 4, and the other end of the base end 3 is cast and fixed together with the concrete base 6. The lower end of the base end 3 and the concrete base 6 are cast with concrete to prevent leakage. The concrete base 6 and the base end 3 are arranged horizontally, and the diameter of the concrete base 6 is larger than the diameter of the steel pipe. A positioning groove for fixing the reinforcing rib 7 is provided at a predetermined position on the concrete base 6, or the reinforcing rib 7 is cast and fixed together. The reinforcing rib 7 is removed after the concrete pouring is completed. The reinforcing rib 7 can be a steel pipe. The reinforcing rib 7 is arranged perpendicular to the concrete base 6. The number of the reinforcing ribs 7 is the same as the number of the arc plates 201 on one column body section 2 and is arranged in the middle of the outer surface of the arc plate 201 to fix the column body 1 to offset the impact force on the arc plate 201 during concrete pouring. The reinforcing rib 7 also has a positioning function. The reinforcing rib 7 is perpendicular to the concrete base 6. The column body 1 is arranged along the reinforcing rib 7 and fixed with the reinforcing rib 7, which can ensure the verticality of the column body 1. When the base end 3 needs to be removed, it can be formed by combining several arc-shaped plates 201, and the gap between the arc-shaped plates 201 and the concrete base platform 6 is filled with cement mortar.

[0030] In the above embodiments, with reference to Figure 2 and Figure 3 as shown, the length-adjustable connecting rod 11 can adopt the screw rod connection method, which is a prior art. It generally includes a pipe body 113, a nut 112 and a screw rod 111. A nut 112 is provided at one end of the pipe body 113, and the nut 112 forms a limit with the pipe body 113. The screw rod 111 is arranged in the pipe body 113 and is in threaded cooperation with the nut 112. By moving the nut to move the screw rod, the length of the connecting rod 11 can be adjusted. The above connection method can also be adjusted by using a threaded pipe and a screw rod. Of course, other length-adjustable methods can also be adopted. In the prior art, adjacent column body segments are tightly fitted by their own weights. Affected by the verticality during the hoisting of the column body segments, it is difficult to achieve the vertical installation of the column body segments, and it is difficult to make the width of the joint seam consistent, and the process is cumbersome. The template of the present invention uses a lighter material. Through the connecting rods 11 evenly distributed on the fixing belt, when the lengths of the connecting rods 11 are all the same, the verticality of the column body segments and the consistency of the joint seams are ensured. At the same time, the upper and lower column body segments can be tightly joined, and the joint seam is small.

[0031] Generally speaking, in the above embodiments, after the template is spliced, wooden squares need to be vertically arranged on the outside of the template to improve the support structure strength of the template. A hoop, that is, the fixing belt of the present application, is arranged on the outside of the wooden square, and then a diagonal brace is arranged. The problem is that after the wooden square is set, the fixing belt cannot adjust the template. At the same time, after the fixing belt is tightened, the fixing belt exerts an inward acting force and acts on the column body segment through the wooden square, resulting in the inward offset of the column body segment. With reference to Figure 4 、 Figure 7 and Figure 9 as shown, a gap is provided between the column body segment and the fixing belt for arranging the wooden square 10. The outer surface of the arc-shaped plate is provided with limit blocks at a predetermined distance in the vertical direction. The fixing belt is provided with limit grooves 9 that cooperate with the limit blocks. Preferably, the shapes of the limit blocks and the limit grooves 9 are wedge-shaped, so that the fixing belt restricts the arc-shaped plate from offsetting towards the center of the concrete column under the extrusion of the wooden square 10. Further, both ends of the limit groove 9 are sealed, and the sealed ends of both ends of the limit groove 9 cooperate with the limit blocks. In this way, the connecting rod 11 drives the fixing belt, and the limit groove 9 of the fixing belt can drive the arc-shaped plate to move longitudinally.

[0032] In the above embodiments, the length of the fixing belt is adjustable. In Embodiment 1, with reference to Figure 4 、 Figure 7 and Figure 9 as shown, in the above embodiments, with reference to Figure 4As shown, the fixing band 5 includes connecting plates 501 at both ends. A rubber sheet 503 is provided between the connecting plates 501. Above the connecting plates 501, there is a fixing rod 504. One end of the fixing rod 504 is hinged to the connecting plate 501 on one side, and a stop block for preventing the rubber sheet from slipping out is provided at the other end. A groove cooperating with the fixing rod 504 is provided on the connecting plate on the other side. The articulated rubber sheet 503 is movably connected to the fixing rod 504 so that the rubber sheet 503 can rotate around the fixing rod 504. The rubber sheet 503 has elasticity. Multiple such rubber sheets can be provided. In this embodiment, the diameter of the column body 1 can be appropriately adapted by the rubber sheet 503. In the above embodiment, referring to Figure 4 As shown, it further includes a marking ruler 505 and a positioning block 506. The marking ruler 505 is hinged to one side of one of the connecting plates 501, and a positioning block 506 cooperating with the marking ruler 505 is provided on the other connecting plate 501. When the marking ruler 505 contacts the positioning block 506, the marking ruler 505 is parallel to the fixing band 5.

[0033] During the formwork assembly and support process, after the formwork is spliced, it is difficult to adjust the formwork again. And during the whole process, the setting of wooden strips, the tightness of hoop rings, and the acting force of inclined braces may all cause changes in the pouring space formed by the formwork, and it is difficult to adjust. And in this application, the fixing band can be used to assemble and install the arc-shaped plates, tightly fit multiple arc-shaped plates and column sections, and the assembly construction is more convenient. At the same time, since the diameter of the column body 1 is affected by the fixing band 5, the fixing bands 5 on the column body 1 should maintain the same tightness. In the existing construction scheme, it needs to be subjectively judged by construction workers. There will be errors for different construction workers and for the fixing bands 5 at different positions, resulting in the diameters of the column body 1 not being strictly the same. In this embodiment, when the two connecting plates are aligned and the marking ruler 505 contacts the positioning block 506, the marking ruler 505 is parallel to the fixing band 5. The scale 507 on the marking ruler 505 can quantitatively reflect the distance between the two connecting plates 501, that is, it can quantitatively judge the length of the fixing band 5, and construction workers can accurately make the fixing bands 5 on the column body 1 have the same tightness, ensuring that the dimensions of the column body 1 are the same. In Embodiment 2, referring to Figure 8 As shown, the length of the fixing band is adjusted by means of a threaded pipe and a screw rod. There are two opposite threads provided in the inner cavity of the threaded pipe, which respectively cooperate with a screw rod. By rotating the threaded pipe, the length adjustment can be achieved. It should be noted that in Embodiment 1 and Embodiment 2, the length of the fixing band can be adjusted to make the adjacent arc-shaped plates fit tightly. After the arc-shaped plates are in place, existing technologies such as nails and bolts can still be used to fix the arc-shaped plates.

[0034] In the above embodiment, referring to Figure 2 and Figure 5 As shown, the fixing band 5 is provided with holes 502 cooperating with the reinforcing ribs 7.

[0035] In the above embodiment, it further includes a coating film, which can be a plastic film, such as an epoxy resin film. The coating film is provided on the inner surface of the column body 1. The coating film can be nailed to the arc-shaped plate 201 through nails. The length of the coating film can be greater than the length of the arc-shaped plate 201. Both ends of the coating film are nailed to the arc-shaped plate 201 to prevent the coating film from shrinking. The coating film can greatly reduce the number of joints on the concrete column and make the surface of the concrete column smoother.

[0036] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the above-disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A formwork structure for casting concrete columns, characterized in that: The template structure includes a column body and fixing straps. The column body includes multiple column body segments, and each column body segment is formed by combining at least two arc-shaped plates. The ends of adjacent arc-shaped plates in the same column body segment are spaced apart by a predetermined distance, so that the joint end of the column body segment has a concave portion and a convex portion. The joint ends of adjacent column body segments cooperate with each other, and at least fixing straps are provided on the joint ends. The fixing straps on the joint ends and the fixing straps on both sides of the joint ends are adjustable for tightly fitting adjacent column body segments. The fixing straps on both sides of the joint end can be fixed to the arc-shaped plates, and the fixing strap on the joint end is connected to the fixing straps on both sides of the joint end through a connecting rod, and the length of the connecting rod is adjustable. A gap is provided between the column body segment and the fixing strap for arranging wooden squares. Limiting blocks are provided on the outer surface of the arc-shaped plate at a predetermined distance in the vertical direction, and the fixing strap is provided with limiting grooves that cooperate with the limiting blocks. The shapes of the limiting blocks and the limiting grooves are wedge-shaped, so that the fixing strap restricts the arc-shaped plate from shifting towards the center of the concrete column under the extrusion of the wooden square. Both ends of the limiting groove are sealed in such a way that the limiting groove can drive the arc-shaped plate to move longitudinally.

2. The formwork structure for casting concrete columns according to claim 1, characterized in that: Protrusions or grooves are provided on the side of the arc-shaped plate, and grooves that cooperate with the protrusions or protrusions that cooperate with the grooves are provided on the sides of adjacent arc-shaped plates.

3. The formwork structure for casting concrete columns according to claim 1, characterized in that: The length of the fixing strap is adjustable for tightly fitting adjacent arc-shaped plates of the same column body segment.

4. The formwork structure for casting concrete columns according to any one of claims 1 to 3, characterized in that: The template structure further includes a base end. Reinforcing bars are vertically arranged along the outer surface of the column body. The number of reinforcing bars is the same as the number of arc-shaped plates on one column body segment and is arranged in the middle of the outer surface of the arc-shaped plate. The reinforcing bars are perpendicular to the concrete foundation platform, and the fixing strap is provided with holes that cooperate with the reinforcing bars.

5. The formwork structure for casting concrete columns according to claim 4, characterized in that: One end of the base end is a joint end connected to the column body. The base end is made of a steel pipe. The lower end of the steel pipe is cast integrally with the concrete foundation platform. The bottom area of the concrete foundation platform is larger than the bottom area of the steel pipe. A positioning groove for fixing the reinforcing bars is reserved on the concrete foundation platform, or the concrete foundation platform is cast and fixed together with the vertically arranged reinforcing bars.

6. The formwork structure for casting concrete columns according to claim 5, characterized in that: Both ends of the fixing strap are provided with connecting plates. A number of rubber sheets are provided between the connecting plates. A fixing rod is provided above the connecting plates. The rubber sheets are movably connected to the fixing rod so that the rubber sheets can rotate around the fixing rod. The fixing strap further includes a marking ruler and a positioning block. The marking ruler is hinged to one side of one of the connecting plates, and a positioning block that cooperates with the marking ruler is provided on the other connecting plate. When the marking ruler contacts the positioning block, the marking ruler is parallel to the fixing strap. The fixing strap is provided with a marking ruler for observing the length of the connecting rod.

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